From f87697e22f289cc96fc4e79da81575115b3e89a2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= Date: Sat, 8 Feb 2020 16:41:06 +0100 Subject: added messaging --- node_modules/.bin/xss | 1 + node_modules/commander/CHANGELOG.md | 419 ++++++++ node_modules/commander/LICENSE | 22 + node_modules/commander/Readme.md | 428 ++++++++ node_modules/commander/index.js | 1224 ++++++++++++++++++++++ node_modules/commander/package.json | 70 ++ node_modules/commander/typings/index.d.ts | 310 ++++++ node_modules/cssfilter/LICENSE | 22 + node_modules/cssfilter/README.md | 86 ++ node_modules/cssfilter/lib/css.js | 110 ++ node_modules/cssfilter/lib/default.js | 398 +++++++ node_modules/cssfilter/lib/index.js | 32 + node_modules/cssfilter/lib/parser.js | 74 ++ node_modules/cssfilter/lib/util.js | 35 + node_modules/cssfilter/package.json | 77 ++ node_modules/xss/LICENSE | 23 + node_modules/xss/README.md | 499 +++++++++ node_modules/xss/README.zh.md | 485 +++++++++ node_modules/xss/bin/xss | 67 ++ node_modules/xss/dist/test.html | 15 + node_modules/xss/dist/xss.js | 1609 +++++++++++++++++++++++++++++ node_modules/xss/dist/xss.min.js | 1 + node_modules/xss/lib/cli.js | 45 + node_modules/xss/lib/default.js | 415 ++++++++ node_modules/xss/lib/index.js | 40 + node_modules/xss/lib/parser.js | 239 +++++ node_modules/xss/lib/util.js | 34 + node_modules/xss/lib/xss.js | 211 ++++ node_modules/xss/package.json | 92 ++ node_modules/xss/typings/xss.d.ts | 189 ++++ 30 files changed, 7272 insertions(+) create mode 120000 node_modules/.bin/xss create mode 100644 node_modules/commander/CHANGELOG.md create mode 100644 node_modules/commander/LICENSE create mode 100644 node_modules/commander/Readme.md create mode 100644 node_modules/commander/index.js create mode 100644 node_modules/commander/package.json create mode 100644 node_modules/commander/typings/index.d.ts create mode 100644 node_modules/cssfilter/LICENSE create mode 100644 node_modules/cssfilter/README.md create mode 100644 node_modules/cssfilter/lib/css.js create mode 100644 node_modules/cssfilter/lib/default.js create mode 100644 node_modules/cssfilter/lib/index.js create mode 100644 node_modules/cssfilter/lib/parser.js create mode 100644 node_modules/cssfilter/lib/util.js create mode 100644 node_modules/cssfilter/package.json create mode 100644 node_modules/xss/LICENSE create mode 100644 node_modules/xss/README.md create mode 100644 node_modules/xss/README.zh.md create mode 100755 node_modules/xss/bin/xss create mode 100644 node_modules/xss/dist/test.html create mode 100644 node_modules/xss/dist/xss.js create mode 100644 node_modules/xss/dist/xss.min.js create mode 100644 node_modules/xss/lib/cli.js create mode 100644 node_modules/xss/lib/default.js create mode 100644 node_modules/xss/lib/index.js create mode 100644 node_modules/xss/lib/parser.js create mode 100644 node_modules/xss/lib/util.js create mode 100644 node_modules/xss/lib/xss.js create mode 100644 node_modules/xss/package.json create mode 100644 node_modules/xss/typings/xss.d.ts (limited to 'node_modules') diff --git a/node_modules/.bin/xss b/node_modules/.bin/xss new file mode 120000 index 0000000..e9e309f --- /dev/null +++ b/node_modules/.bin/xss @@ -0,0 +1 @@ +../xss/bin/xss \ No newline at end of file diff --git a/node_modules/commander/CHANGELOG.md b/node_modules/commander/CHANGELOG.md new file mode 100644 index 0000000..7dce779 --- /dev/null +++ b/node_modules/commander/CHANGELOG.md @@ -0,0 +1,419 @@ +2.20.3 / 2019-10-11 +================== + + * Support Node.js 0.10 (Revert #1059) + * Ran "npm unpublish commander@2.20.2". There is no 2.20.2. + +2.20.1 / 2019-09-29 +================== + + * Improve executable subcommand tracking + * Update dev dependencies + +2.20.0 / 2019-04-02 +================== + + * fix: resolve symbolic links completely when hunting for subcommands (#935) + * Update index.d.ts (#930) + * Update Readme.md (#924) + * Remove --save option as it isn't required anymore (#918) + * Add link to the license file (#900) + * Added example of receiving args from options (#858) + * Added missing semicolon (#882) + * Add extension to .eslintrc (#876) + +2.19.0 / 2018-10-02 +================== + + * Removed newline after Options and Commands headers (#864) + * Bugfix - Error output (#862) + * Fix to change default value to string (#856) + +2.18.0 / 2018-09-07 +================== + + * Standardize help output (#853) + * chmod 644 travis.yml (#851) + * add support for execute typescript subcommand via ts-node (#849) + +2.17.1 / 2018-08-07 +================== + + * Fix bug in command emit (#844) + +2.17.0 / 2018-08-03 +================== + + * fixed newline output after help information (#833) + * Fix to emit the action even without command (#778) + * npm update (#823) + +2.16.0 / 2018-06-29 +================== + + * Remove Makefile and `test/run` (#821) + * Make 'npm test' run on Windows (#820) + * Add badge to display install size (#807) + * chore: cache node_modules (#814) + * chore: remove Node.js 4 (EOL), add Node.js 10 (#813) + * fixed typo in readme (#812) + * Fix types (#804) + * Update eslint to resolve vulnerabilities in lodash (#799) + * updated readme with custom event listeners. (#791) + * fix tests (#794) + +2.15.0 / 2018-03-07 +================== + + * Update downloads badge to point to graph of downloads over time instead of duplicating link to npm + * Arguments description + +2.14.1 / 2018-02-07 +================== + + * Fix typing of help function + +2.14.0 / 2018-02-05 +================== + + * only register the option:version event once + * Fixes issue #727: Passing empty string for option on command is set to undefined + * enable eqeqeq rule + * resolves #754 add linter configuration to project + * resolves #560 respect custom name for version option + * document how to override the version flag + * document using options per command + +2.13.0 / 2018-01-09 +================== + + * Do not print default for --no- + * remove trailing spaces in command help + * Update CI's Node.js to LTS and latest version + * typedefs: Command and Option types added to commander namespace + +2.12.2 / 2017-11-28 +================== + + * fix: typings are not shipped + +2.12.1 / 2017-11-23 +================== + + * Move @types/node to dev dependency + +2.12.0 / 2017-11-22 +================== + + * add attributeName() method to Option objects + * Documentation updated for options with --no prefix + * typings: `outputHelp` takes a string as the first parameter + * typings: use overloads + * feat(typings): update to match js api + * Print default value in option help + * Fix translation error + * Fail when using same command and alias (#491) + * feat(typings): add help callback + * fix bug when description is add after command with options (#662) + * Format js code + * Rename History.md to CHANGELOG.md (#668) + * feat(typings): add typings to support TypeScript (#646) + * use current node + +2.11.0 / 2017-07-03 +================== + + * Fix help section order and padding (#652) + * feature: support for signals to subcommands (#632) + * Fixed #37, --help should not display first (#447) + * Fix translation errors. (#570) + * Add package-lock.json + * Remove engines + * Upgrade package version + * Prefix events to prevent conflicts between commands and options (#494) + * Removing dependency on graceful-readlink + * Support setting name in #name function and make it chainable + * Add .vscode directory to .gitignore (Visual Studio Code metadata) + * Updated link to ruby commander in readme files + +2.10.0 / 2017-06-19 +================== + + * Update .travis.yml. drop support for older node.js versions. + * Fix require arguments in README.md + * On SemVer you do not start from 0.0.1 + * Add missing semi colon in readme + * Add save param to npm install + * node v6 travis test + * Update Readme_zh-CN.md + * Allow literal '--' to be passed-through as an argument + * Test subcommand alias help + * link build badge to master branch + * Support the alias of Git style sub-command + * added keyword commander for better search result on npm + * Fix Sub-Subcommands + * test node.js stable + * Fixes TypeError when a command has an option called `--description` + * Update README.md to make it beginner friendly and elaborate on the difference between angled and square brackets. + * Add chinese Readme file + +2.9.0 / 2015-10-13 +================== + + * Add option `isDefault` to set default subcommand #415 @Qix- + * Add callback to allow filtering or post-processing of help text #434 @djulien + * Fix `undefined` text in help information close #414 #416 @zhiyelee + +2.8.1 / 2015-04-22 +================== + + * Back out `support multiline description` Close #396 #397 + +2.8.0 / 2015-04-07 +================== + + * Add `process.execArg` support, execution args like `--harmony` will be passed to sub-commands #387 @DigitalIO @zhiyelee + * Fix bug in Git-style sub-commands #372 @zhiyelee + * Allow commands to be hidden from help #383 @tonylukasavage + * When git-style sub-commands are in use, yet none are called, display help #382 @claylo + * Add ability to specify arguments syntax for top-level command #258 @rrthomas + * Support multiline descriptions #208 @zxqfox + +2.7.1 / 2015-03-11 +================== + + * Revert #347 (fix collisions when option and first arg have same name) which causes a bug in #367. + +2.7.0 / 2015-03-09 +================== + + * Fix git-style bug when installed globally. Close #335 #349 @zhiyelee + * Fix collisions when option and first arg have same name. Close #346 #347 @tonylukasavage + * Add support for camelCase on `opts()`. Close #353 @nkzawa + * Add node.js 0.12 and io.js to travis.yml + * Allow RegEx options. #337 @palanik + * Fixes exit code when sub-command failing. Close #260 #332 @pirelenito + * git-style `bin` files in $PATH make sense. Close #196 #327 @zhiyelee + +2.6.0 / 2014-12-30 +================== + + * added `Command#allowUnknownOption` method. Close #138 #318 @doozr @zhiyelee + * Add application description to the help msg. Close #112 @dalssoft + +2.5.1 / 2014-12-15 +================== + + * fixed two bugs incurred by variadic arguments. Close #291 @Quentin01 #302 @zhiyelee + +2.5.0 / 2014-10-24 +================== + + * add support for variadic arguments. Closes #277 @whitlockjc + +2.4.0 / 2014-10-17 +================== + + * fixed a bug on executing the coercion function of subcommands option. Closes #270 + * added `Command.prototype.name` to retrieve command name. Closes #264 #266 @tonylukasavage + * added `Command.prototype.opts` to retrieve all the options as a simple object of key-value pairs. Closes #262 @tonylukasavage + * fixed a bug on subcommand name. Closes #248 @jonathandelgado + * fixed function normalize doesn’t honor option terminator. Closes #216 @abbr + +2.3.0 / 2014-07-16 +================== + + * add command alias'. Closes PR #210 + * fix: Typos. Closes #99 + * fix: Unused fs module. Closes #217 + +2.2.0 / 2014-03-29 +================== + + * add passing of previous option value + * fix: support subcommands on windows. Closes #142 + * Now the defaultValue passed as the second argument of the coercion function. + +2.1.0 / 2013-11-21 +================== + + * add: allow cflag style option params, unit test, fixes #174 + +2.0.0 / 2013-07-18 +================== + + * remove input methods (.prompt, .confirm, etc) + +1.3.2 / 2013-07-18 +================== + + * add support for sub-commands to co-exist with the original command + +1.3.1 / 2013-07-18 +================== + + * add quick .runningCommand hack so you can opt-out of other logic when running a sub command + +1.3.0 / 2013-07-09 +================== + + * add EACCES error handling + * fix sub-command --help + +1.2.0 / 2013-06-13 +================== + + * allow "-" hyphen as an option argument + * support for RegExp coercion + +1.1.1 / 2012-11-20 +================== + + * add more sub-command padding + * fix .usage() when args are present. Closes #106 + +1.1.0 / 2012-11-16 +================== + + * add git-style executable subcommand support. Closes #94 + +1.0.5 / 2012-10-09 +================== + + * fix `--name` clobbering. Closes #92 + * fix examples/help. Closes #89 + +1.0.4 / 2012-09-03 +================== + + * add `outputHelp()` method. + +1.0.3 / 2012-08-30 +================== + + * remove invalid .version() defaulting + +1.0.2 / 2012-08-24 +================== + + * add `--foo=bar` support [arv] + * fix password on node 0.8.8. Make backward compatible with 0.6 [focusaurus] + +1.0.1 / 2012-08-03 +================== + + * fix issue #56 + * fix tty.setRawMode(mode) was moved to tty.ReadStream#setRawMode() (i.e. process.stdin.setRawMode()) + +1.0.0 / 2012-07-05 +================== + + * add support for optional option descriptions + * add defaulting of `.version()` to package.json's version + +0.6.1 / 2012-06-01 +================== + + * Added: append (yes or no) on confirmation + * Added: allow node.js v0.7.x + +0.6.0 / 2012-04-10 +================== + + * Added `.prompt(obj, callback)` support. Closes #49 + * Added default support to .choose(). Closes #41 + * Fixed the choice example + +0.5.1 / 2011-12-20 +================== + + * Fixed `password()` for recent nodes. Closes #36 + +0.5.0 / 2011-12-04 +================== + + * Added sub-command option support [itay] + +0.4.3 / 2011-12-04 +================== + + * Fixed custom help ordering. Closes #32 + +0.4.2 / 2011-11-24 +================== + + * Added travis support + * Fixed: line-buffered input automatically trimmed. Closes #31 + +0.4.1 / 2011-11-18 +================== + + * Removed listening for "close" on --help + +0.4.0 / 2011-11-15 +================== + + * Added support for `--`. Closes #24 + +0.3.3 / 2011-11-14 +================== + + * Fixed: wait for close event when writing help info [Jerry Hamlet] + +0.3.2 / 2011-11-01 +================== + + * Fixed long flag definitions with values [felixge] + +0.3.1 / 2011-10-31 +================== + + * Changed `--version` short flag to `-V` from `-v` + * Changed `.version()` so it's configurable [felixge] + +0.3.0 / 2011-10-31 +================== + + * Added support for long flags only. Closes #18 + +0.2.1 / 2011-10-24 +================== + + * "node": ">= 0.4.x < 0.7.0". Closes #20 + +0.2.0 / 2011-09-26 +================== + + * Allow for defaults that are not just boolean. Default peassignment only occurs for --no-*, optional, and required arguments. [Jim Isaacs] + +0.1.0 / 2011-08-24 +================== + + * Added support for custom `--help` output + +0.0.5 / 2011-08-18 +================== + + * Changed: when the user enters nothing prompt for password again + * Fixed issue with passwords beginning with numbers [NuckChorris] + +0.0.4 / 2011-08-15 +================== + + * Fixed `Commander#args` + +0.0.3 / 2011-08-15 +================== + + * Added default option value support + +0.0.2 / 2011-08-15 +================== + + * Added mask support to `Command#password(str[, mask], fn)` + * Added `Command#password(str, fn)` + +0.0.1 / 2010-01-03 +================== + + * Initial release diff --git a/node_modules/commander/LICENSE b/node_modules/commander/LICENSE new file mode 100644 index 0000000..10f997a --- /dev/null +++ b/node_modules/commander/LICENSE @@ -0,0 +1,22 @@ +(The MIT License) + +Copyright (c) 2011 TJ Holowaychuk + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +'Software'), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/commander/Readme.md b/node_modules/commander/Readme.md new file mode 100644 index 0000000..c846e7a --- /dev/null +++ b/node_modules/commander/Readme.md @@ -0,0 +1,428 @@ +# Commander.js + + +[![Build Status](https://api.travis-ci.org/tj/commander.js.svg?branch=master)](http://travis-ci.org/tj/commander.js) +[![NPM Version](http://img.shields.io/npm/v/commander.svg?style=flat)](https://www.npmjs.org/package/commander) +[![NPM Downloads](https://img.shields.io/npm/dm/commander.svg?style=flat)](https://npmcharts.com/compare/commander?minimal=true) +[![Install Size](https://packagephobia.now.sh/badge?p=commander)](https://packagephobia.now.sh/result?p=commander) +[![Join the chat at https://gitter.im/tj/commander.js](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/tj/commander.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) + + The complete solution for [node.js](http://nodejs.org) command-line interfaces, inspired by Ruby's [commander](https://github.com/commander-rb/commander). + [API documentation](http://tj.github.com/commander.js/) + + +## Installation + + $ npm install commander + +## Option parsing + +Options with commander are defined with the `.option()` method, also serving as documentation for the options. The example below parses args and options from `process.argv`, leaving remaining args as the `program.args` array which were not consumed by options. + +```js +#!/usr/bin/env node + +/** + * Module dependencies. + */ + +var program = require('commander'); + +program + .version('0.1.0') + .option('-p, --peppers', 'Add peppers') + .option('-P, --pineapple', 'Add pineapple') + .option('-b, --bbq-sauce', 'Add bbq sauce') + .option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble') + .parse(process.argv); + +console.log('you ordered a pizza with:'); +if (program.peppers) console.log(' - peppers'); +if (program.pineapple) console.log(' - pineapple'); +if (program.bbqSauce) console.log(' - bbq'); +console.log(' - %s cheese', program.cheese); +``` + +Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc. + +Note that multi-word options starting with `--no` prefix negate the boolean value of the following word. For example, `--no-sauce` sets the value of `program.sauce` to false. + +```js +#!/usr/bin/env node + +/** + * Module dependencies. + */ + +var program = require('commander'); + +program + .option('--no-sauce', 'Remove sauce') + .parse(process.argv); + +console.log('you ordered a pizza'); +if (program.sauce) console.log(' with sauce'); +else console.log(' without sauce'); +``` + +To get string arguments from options you will need to use angle brackets <> for required inputs or square brackets [] for optional inputs. + +e.g. ```.option('-m --myarg [myVar]', 'my super cool description')``` + +Then to access the input if it was passed in. + +e.g. ```var myInput = program.myarg``` + +**NOTE**: If you pass a argument without using brackets the example above will return true and not the value passed in. + + +## Version option + +Calling the `version` implicitly adds the `-V` and `--version` options to the command. +When either of these options is present, the command prints the version number and exits. + + $ ./examples/pizza -V + 0.0.1 + +If you want your program to respond to the `-v` option instead of the `-V` option, simply pass custom flags to the `version` method using the same syntax as the `option` method. + +```js +program + .version('0.0.1', '-v, --version') +``` + +The version flags can be named anything, but the long option is required. + +## Command-specific options + +You can attach options to a command. + +```js +#!/usr/bin/env node + +var program = require('commander'); + +program + .command('rm ') + .option('-r, --recursive', 'Remove recursively') + .action(function (dir, cmd) { + console.log('remove ' + dir + (cmd.recursive ? ' recursively' : '')) + }) + +program.parse(process.argv) +``` + +A command's options are validated when the command is used. Any unknown options will be reported as an error. However, if an action-based command does not define an action, then the options are not validated. + +## Coercion + +```js +function range(val) { + return val.split('..').map(Number); +} + +function list(val) { + return val.split(','); +} + +function collect(val, memo) { + memo.push(val); + return memo; +} + +function increaseVerbosity(v, total) { + return total + 1; +} + +program + .version('0.1.0') + .usage('[options] ') + .option('-i, --integer ', 'An integer argument', parseInt) + .option('-f, --float ', 'A float argument', parseFloat) + .option('-r, --range ..', 'A range', range) + .option('-l, --list ', 'A list', list) + .option('-o, --optional [value]', 'An optional value') + .option('-c, --collect [value]', 'A repeatable value', collect, []) + .option('-v, --verbose', 'A value that can be increased', increaseVerbosity, 0) + .parse(process.argv); + +console.log(' int: %j', program.integer); +console.log(' float: %j', program.float); +console.log(' optional: %j', program.optional); +program.range = program.range || []; +console.log(' range: %j..%j', program.range[0], program.range[1]); +console.log(' list: %j', program.list); +console.log(' collect: %j', program.collect); +console.log(' verbosity: %j', program.verbose); +console.log(' args: %j', program.args); +``` + +## Regular Expression +```js +program + .version('0.1.0') + .option('-s --size ', 'Pizza size', /^(large|medium|small)$/i, 'medium') + .option('-d --drink [drink]', 'Drink', /^(coke|pepsi|izze)$/i) + .parse(process.argv); + +console.log(' size: %j', program.size); +console.log(' drink: %j', program.drink); +``` + +## Variadic arguments + + The last argument of a command can be variadic, and only the last argument. To make an argument variadic you have to + append `...` to the argument name. Here is an example: + +```js +#!/usr/bin/env node + +/** + * Module dependencies. + */ + +var program = require('commander'); + +program + .version('0.1.0') + .command('rmdir [otherDirs...]') + .action(function (dir, otherDirs) { + console.log('rmdir %s', dir); + if (otherDirs) { + otherDirs.forEach(function (oDir) { + console.log('rmdir %s', oDir); + }); + } + }); + +program.parse(process.argv); +``` + + An `Array` is used for the value of a variadic argument. This applies to `program.args` as well as the argument passed + to your action as demonstrated above. + +## Specify the argument syntax + +```js +#!/usr/bin/env node + +var program = require('commander'); + +program + .version('0.1.0') + .arguments(' [env]') + .action(function (cmd, env) { + cmdValue = cmd; + envValue = env; + }); + +program.parse(process.argv); + +if (typeof cmdValue === 'undefined') { + console.error('no command given!'); + process.exit(1); +} +console.log('command:', cmdValue); +console.log('environment:', envValue || "no environment given"); +``` +Angled brackets (e.g. ``) indicate required input. Square brackets (e.g. `[env]`) indicate optional input. + +## Git-style sub-commands + +```js +// file: ./examples/pm +var program = require('commander'); + +program + .version('0.1.0') + .command('install [name]', 'install one or more packages') + .command('search [query]', 'search with optional query') + .command('list', 'list packages installed', {isDefault: true}) + .parse(process.argv); +``` + +When `.command()` is invoked with a description argument, no `.action(callback)` should be called to handle sub-commands, otherwise there will be an error. This tells commander that you're going to use separate executables for sub-commands, much like `git(1)` and other popular tools. +The commander will try to search the executables in the directory of the entry script (like `./examples/pm`) with the name `program-command`, like `pm-install`, `pm-search`. + +Options can be passed with the call to `.command()`. Specifying `true` for `opts.noHelp` will remove the subcommand from the generated help output. Specifying `true` for `opts.isDefault` will run the subcommand if no other subcommand is specified. + +If the program is designed to be installed globally, make sure the executables have proper modes, like `755`. + +### `--harmony` + +You can enable `--harmony` option in two ways: +* Use `#! /usr/bin/env node --harmony` in the sub-commands scripts. Note some os version don’t support this pattern. +* Use the `--harmony` option when call the command, like `node --harmony examples/pm publish`. The `--harmony` option will be preserved when spawning sub-command process. + +## Automated --help + + The help information is auto-generated based on the information commander already knows about your program, so the following `--help` info is for free: + +``` +$ ./examples/pizza --help +Usage: pizza [options] + +An application for pizzas ordering + +Options: + -h, --help output usage information + -V, --version output the version number + -p, --peppers Add peppers + -P, --pineapple Add pineapple + -b, --bbq Add bbq sauce + -c, --cheese Add the specified type of cheese [marble] + -C, --no-cheese You do not want any cheese +``` + +## Custom help + + You can display arbitrary `-h, --help` information + by listening for "--help". Commander will automatically + exit once you are done so that the remainder of your program + does not execute causing undesired behaviors, for example + in the following executable "stuff" will not output when + `--help` is used. + +```js +#!/usr/bin/env node + +/** + * Module dependencies. + */ + +var program = require('commander'); + +program + .version('0.1.0') + .option('-f, --foo', 'enable some foo') + .option('-b, --bar', 'enable some bar') + .option('-B, --baz', 'enable some baz'); + +// must be before .parse() since +// node's emit() is immediate + +program.on('--help', function(){ + console.log('') + console.log('Examples:'); + console.log(' $ custom-help --help'); + console.log(' $ custom-help -h'); +}); + +program.parse(process.argv); + +console.log('stuff'); +``` + +Yields the following help output when `node script-name.js -h` or `node script-name.js --help` are run: + +``` +Usage: custom-help [options] + +Options: + -h, --help output usage information + -V, --version output the version number + -f, --foo enable some foo + -b, --bar enable some bar + -B, --baz enable some baz + +Examples: + $ custom-help --help + $ custom-help -h +``` + +## .outputHelp(cb) + +Output help information without exiting. +Optional callback cb allows post-processing of help text before it is displayed. + +If you want to display help by default (e.g. if no command was provided), you can use something like: + +```js +var program = require('commander'); +var colors = require('colors'); + +program + .version('0.1.0') + .command('getstream [url]', 'get stream URL') + .parse(process.argv); + +if (!process.argv.slice(2).length) { + program.outputHelp(make_red); +} + +function make_red(txt) { + return colors.red(txt); //display the help text in red on the console +} +``` + +## .help(cb) + + Output help information and exit immediately. + Optional callback cb allows post-processing of help text before it is displayed. + + +## Custom event listeners + You can execute custom actions by listening to command and option events. + +```js +program.on('option:verbose', function () { + process.env.VERBOSE = this.verbose; +}); + +// error on unknown commands +program.on('command:*', function () { + console.error('Invalid command: %s\nSee --help for a list of available commands.', program.args.join(' ')); + process.exit(1); +}); +``` + +## Examples + +```js +var program = require('commander'); + +program + .version('0.1.0') + .option('-C, --chdir ', 'change the working directory') + .option('-c, --config ', 'set config path. defaults to ./deploy.conf') + .option('-T, --no-tests', 'ignore test hook'); + +program + .command('setup [env]') + .description('run setup commands for all envs') + .option("-s, --setup_mode [mode]", "Which setup mode to use") + .action(function(env, options){ + var mode = options.setup_mode || "normal"; + env = env || 'all'; + console.log('setup for %s env(s) with %s mode', env, mode); + }); + +program + .command('exec ') + .alias('ex') + .description('execute the given remote cmd') + .option("-e, --exec_mode ", "Which exec mode to use") + .action(function(cmd, options){ + console.log('exec "%s" using %s mode', cmd, options.exec_mode); + }).on('--help', function() { + console.log(''); + console.log('Examples:'); + console.log(''); + console.log(' $ deploy exec sequential'); + console.log(' $ deploy exec async'); + }); + +program + .command('*') + .action(function(env){ + console.log('deploying "%s"', env); + }); + +program.parse(process.argv); +``` + +More Demos can be found in the [examples](https://github.com/tj/commander.js/tree/master/examples) directory. + +## License + +[MIT](https://github.com/tj/commander.js/blob/master/LICENSE) diff --git a/node_modules/commander/index.js b/node_modules/commander/index.js new file mode 100644 index 0000000..ec1d61d --- /dev/null +++ b/node_modules/commander/index.js @@ -0,0 +1,1224 @@ +/** + * Module dependencies. + */ + +var EventEmitter = require('events').EventEmitter; +var spawn = require('child_process').spawn; +var path = require('path'); +var dirname = path.dirname; +var basename = path.basename; +var fs = require('fs'); + +/** + * Inherit `Command` from `EventEmitter.prototype`. + */ + +require('util').inherits(Command, EventEmitter); + +/** + * Expose the root command. + */ + +exports = module.exports = new Command(); + +/** + * Expose `Command`. + */ + +exports.Command = Command; + +/** + * Expose `Option`. + */ + +exports.Option = Option; + +/** + * Initialize a new `Option` with the given `flags` and `description`. + * + * @param {String} flags + * @param {String} description + * @api public + */ + +function Option(flags, description) { + this.flags = flags; + this.required = flags.indexOf('<') >= 0; + this.optional = flags.indexOf('[') >= 0; + this.bool = flags.indexOf('-no-') === -1; + flags = flags.split(/[ ,|]+/); + if (flags.length > 1 && !/^[[<]/.test(flags[1])) this.short = flags.shift(); + this.long = flags.shift(); + this.description = description || ''; +} + +/** + * Return option name. + * + * @return {String} + * @api private + */ + +Option.prototype.name = function() { + return this.long + .replace('--', '') + .replace('no-', ''); +}; + +/** + * Return option name, in a camelcase format that can be used + * as a object attribute key. + * + * @return {String} + * @api private + */ + +Option.prototype.attributeName = function() { + return camelcase(this.name()); +}; + +/** + * Check if `arg` matches the short or long flag. + * + * @param {String} arg + * @return {Boolean} + * @api private + */ + +Option.prototype.is = function(arg) { + return this.short === arg || this.long === arg; +}; + +/** + * Initialize a new `Command`. + * + * @param {String} name + * @api public + */ + +function Command(name) { + this.commands = []; + this.options = []; + this._execs = {}; + this._allowUnknownOption = false; + this._args = []; + this._name = name || ''; +} + +/** + * Add command `name`. + * + * The `.action()` callback is invoked when the + * command `name` is specified via __ARGV__, + * and the remaining arguments are applied to the + * function for access. + * + * When the `name` is "*" an un-matched command + * will be passed as the first arg, followed by + * the rest of __ARGV__ remaining. + * + * Examples: + * + * program + * .version('0.0.1') + * .option('-C, --chdir ', 'change the working directory') + * .option('-c, --config ', 'set config path. defaults to ./deploy.conf') + * .option('-T, --no-tests', 'ignore test hook') + * + * program + * .command('setup') + * .description('run remote setup commands') + * .action(function() { + * console.log('setup'); + * }); + * + * program + * .command('exec ') + * .description('run the given remote command') + * .action(function(cmd) { + * console.log('exec "%s"', cmd); + * }); + * + * program + * .command('teardown [otherDirs...]') + * .description('run teardown commands') + * .action(function(dir, otherDirs) { + * console.log('dir "%s"', dir); + * if (otherDirs) { + * otherDirs.forEach(function (oDir) { + * console.log('dir "%s"', oDir); + * }); + * } + * }); + * + * program + * .command('*') + * .description('deploy the given env') + * .action(function(env) { + * console.log('deploying "%s"', env); + * }); + * + * program.parse(process.argv); + * + * @param {String} name + * @param {String} [desc] for git-style sub-commands + * @return {Command} the new command + * @api public + */ + +Command.prototype.command = function(name, desc, opts) { + if (typeof desc === 'object' && desc !== null) { + opts = desc; + desc = null; + } + opts = opts || {}; + var args = name.split(/ +/); + var cmd = new Command(args.shift()); + + if (desc) { + cmd.description(desc); + this.executables = true; + this._execs[cmd._name] = true; + if (opts.isDefault) this.defaultExecutable = cmd._name; + } + cmd._noHelp = !!opts.noHelp; + this.commands.push(cmd); + cmd.parseExpectedArgs(args); + cmd.parent = this; + + if (desc) return this; + return cmd; +}; + +/** + * Define argument syntax for the top-level command. + * + * @api public + */ + +Command.prototype.arguments = function(desc) { + return this.parseExpectedArgs(desc.split(/ +/)); +}; + +/** + * Add an implicit `help [cmd]` subcommand + * which invokes `--help` for the given command. + * + * @api private + */ + +Command.prototype.addImplicitHelpCommand = function() { + this.command('help [cmd]', 'display help for [cmd]'); +}; + +/** + * Parse expected `args`. + * + * For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`. + * + * @param {Array} args + * @return {Command} for chaining + * @api public + */ + +Command.prototype.parseExpectedArgs = function(args) { + if (!args.length) return; + var self = this; + args.forEach(function(arg) { + var argDetails = { + required: false, + name: '', + variadic: false + }; + + switch (arg[0]) { + case '<': + argDetails.required = true; + argDetails.name = arg.slice(1, -1); + break; + case '[': + argDetails.name = arg.slice(1, -1); + break; + } + + if (argDetails.name.length > 3 && argDetails.name.slice(-3) === '...') { + argDetails.variadic = true; + argDetails.name = argDetails.name.slice(0, -3); + } + if (argDetails.name) { + self._args.push(argDetails); + } + }); + return this; +}; + +/** + * Register callback `fn` for the command. + * + * Examples: + * + * program + * .command('help') + * .description('display verbose help') + * .action(function() { + * // output help here + * }); + * + * @param {Function} fn + * @return {Command} for chaining + * @api public + */ + +Command.prototype.action = function(fn) { + var self = this; + var listener = function(args, unknown) { + // Parse any so-far unknown options + args = args || []; + unknown = unknown || []; + + var parsed = self.parseOptions(unknown); + + // Output help if necessary + outputHelpIfNecessary(self, parsed.unknown); + + // If there are still any unknown options, then we simply + // die, unless someone asked for help, in which case we give it + // to them, and then we die. + if (parsed.unknown.length > 0) { + self.unknownOption(parsed.unknown[0]); + } + + // Leftover arguments need to be pushed back. Fixes issue #56 + if (parsed.args.length) args = parsed.args.concat(args); + + self._args.forEach(function(arg, i) { + if (arg.required && args[i] == null) { + self.missingArgument(arg.name); + } else if (arg.variadic) { + if (i !== self._args.length - 1) { + self.variadicArgNotLast(arg.name); + } + + args[i] = args.splice(i); + } + }); + + // Always append ourselves to the end of the arguments, + // to make sure we match the number of arguments the user + // expects + if (self._args.length) { + args[self._args.length] = self; + } else { + args.push(self); + } + + fn.apply(self, args); + }; + var parent = this.parent || this; + var name = parent === this ? '*' : this._name; + parent.on('command:' + name, listener); + if (this._alias) parent.on('command:' + this._alias, listener); + return this; +}; + +/** + * Define option with `flags`, `description` and optional + * coercion `fn`. + * + * The `flags` string should contain both the short and long flags, + * separated by comma, a pipe or space. The following are all valid + * all will output this way when `--help` is used. + * + * "-p, --pepper" + * "-p|--pepper" + * "-p --pepper" + * + * Examples: + * + * // simple boolean defaulting to false + * program.option('-p, --pepper', 'add pepper'); + * + * --pepper + * program.pepper + * // => Boolean + * + * // simple boolean defaulting to true + * program.option('-C, --no-cheese', 'remove cheese'); + * + * program.cheese + * // => true + * + * --no-cheese + * program.cheese + * // => false + * + * // required argument + * program.option('-C, --chdir ', 'change the working directory'); + * + * --chdir /tmp + * program.chdir + * // => "/tmp" + * + * // optional argument + * program.option('-c, --cheese [type]', 'add cheese [marble]'); + * + * @param {String} flags + * @param {String} description + * @param {Function|*} [fn] or default + * @param {*} [defaultValue] + * @return {Command} for chaining + * @api public + */ + +Command.prototype.option = function(flags, description, fn, defaultValue) { + var self = this, + option = new Option(flags, description), + oname = option.name(), + name = option.attributeName(); + + // default as 3rd arg + if (typeof fn !== 'function') { + if (fn instanceof RegExp) { + var regex = fn; + fn = function(val, def) { + var m = regex.exec(val); + return m ? m[0] : def; + }; + } else { + defaultValue = fn; + fn = null; + } + } + + // preassign default value only for --no-*, [optional], or + if (!option.bool || option.optional || option.required) { + // when --no-* we make sure default is true + if (!option.bool) defaultValue = true; + // preassign only if we have a default + if (defaultValue !== undefined) { + self[name] = defaultValue; + option.defaultValue = defaultValue; + } + } + + // register the option + this.options.push(option); + + // when it's passed assign the value + // and conditionally invoke the callback + this.on('option:' + oname, function(val) { + // coercion + if (val !== null && fn) { + val = fn(val, self[name] === undefined ? defaultValue : self[name]); + } + + // unassigned or bool + if (typeof self[name] === 'boolean' || typeof self[name] === 'undefined') { + // if no value, bool true, and we have a default, then use it! + if (val == null) { + self[name] = option.bool + ? defaultValue || true + : false; + } else { + self[name] = val; + } + } else if (val !== null) { + // reassign + self[name] = val; + } + }); + + return this; +}; + +/** + * Allow unknown options on the command line. + * + * @param {Boolean} arg if `true` or omitted, no error will be thrown + * for unknown options. + * @api public + */ +Command.prototype.allowUnknownOption = function(arg) { + this._allowUnknownOption = arguments.length === 0 || arg; + return this; +}; + +/** + * Parse `argv`, settings options and invoking commands when defined. + * + * @param {Array} argv + * @return {Command} for chaining + * @api public + */ + +Command.prototype.parse = function(argv) { + // implicit help + if (this.executables) this.addImplicitHelpCommand(); + + // store raw args + this.rawArgs = argv; + + // guess name + this._name = this._name || basename(argv[1], '.js'); + + // github-style sub-commands with no sub-command + if (this.executables && argv.length < 3 && !this.defaultExecutable) { + // this user needs help + argv.push('--help'); + } + + // process argv + var parsed = this.parseOptions(this.normalize(argv.slice(2))); + var args = this.args = parsed.args; + + var result = this.parseArgs(this.args, parsed.unknown); + + // executable sub-commands + var name = result.args[0]; + + var aliasCommand = null; + // check alias of sub commands + if (name) { + aliasCommand = this.commands.filter(function(command) { + return command.alias() === name; + })[0]; + } + + if (this._execs[name] === true) { + return this.executeSubCommand(argv, args, parsed.unknown); + } else if (aliasCommand) { + // is alias of a subCommand + args[0] = aliasCommand._name; + return this.executeSubCommand(argv, args, parsed.unknown); + } else if (this.defaultExecutable) { + // use the default subcommand + args.unshift(this.defaultExecutable); + return this.executeSubCommand(argv, args, parsed.unknown); + } + + return result; +}; + +/** + * Execute a sub-command executable. + * + * @param {Array} argv + * @param {Array} args + * @param {Array} unknown + * @api private + */ + +Command.prototype.executeSubCommand = function(argv, args, unknown) { + args = args.concat(unknown); + + if (!args.length) this.help(); + if (args[0] === 'help' && args.length === 1) this.help(); + + // --help + if (args[0] === 'help') { + args[0] = args[1]; + args[1] = '--help'; + } + + // executable + var f = argv[1]; + // name of the subcommand, link `pm-install` + var bin = basename(f, path.extname(f)) + '-' + args[0]; + + // In case of globally installed, get the base dir where executable + // subcommand file should be located at + var baseDir; + + var resolvedLink = fs.realpathSync(f); + + baseDir = dirname(resolvedLink); + + // prefer local `./` to bin in the $PATH + var localBin = path.join(baseDir, bin); + + // whether bin file is a js script with explicit `.js` or `.ts` extension + var isExplicitJS = false; + if (exists(localBin + '.js')) { + bin = localBin + '.js'; + isExplicitJS = true; + } else if (exists(localBin + '.ts')) { + bin = localBin + '.ts'; + isExplicitJS = true; + } else if (exists(localBin)) { + bin = localBin; + } + + args = args.slice(1); + + var proc; + if (process.platform !== 'win32') { + if (isExplicitJS) { + args.unshift(bin); + // add executable arguments to spawn + args = (process.execArgv || []).concat(args); + + proc = spawn(process.argv[0], args, { stdio: 'inherit', customFds: [0, 1, 2] }); + } else { + proc = spawn(bin, args, { stdio: 'inherit', customFds: [0, 1, 2] }); + } + } else { + args.unshift(bin); + proc = spawn(process.execPath, args, { stdio: 'inherit' }); + } + + var signals = ['SIGUSR1', 'SIGUSR2', 'SIGTERM', 'SIGINT', 'SIGHUP']; + signals.forEach(function(signal) { + process.on(signal, function() { + if (proc.killed === false && proc.exitCode === null) { + proc.kill(signal); + } + }); + }); + proc.on('close', process.exit.bind(process)); + proc.on('error', function(err) { + if (err.code === 'ENOENT') { + console.error('error: %s(1) does not exist, try --help', bin); + } else if (err.code === 'EACCES') { + console.error('error: %s(1) not executable. try chmod or run with root', bin); + } + process.exit(1); + }); + + // Store the reference to the child process + this.runningCommand = proc; +}; + +/** + * Normalize `args`, splitting joined short flags. For example + * the arg "-abc" is equivalent to "-a -b -c". + * This also normalizes equal sign and splits "--abc=def" into "--abc def". + * + * @param {Array} args + * @return {Array} + * @api private + */ + +Command.prototype.normalize = function(args) { + var ret = [], + arg, + lastOpt, + index; + + for (var i = 0, len = args.length; i < len; ++i) { + arg = args[i]; + if (i > 0) { + lastOpt = this.optionFor(args[i - 1]); + } + + if (arg === '--') { + // Honor option terminator + ret = ret.concat(args.slice(i)); + break; + } else if (lastOpt && lastOpt.required) { + ret.push(arg); + } else if (arg.length > 1 && arg[0] === '-' && arg[1] !== '-') { + arg.slice(1).split('').forEach(function(c) { + ret.push('-' + c); + }); + } else if (/^--/.test(arg) && ~(index = arg.indexOf('='))) { + ret.push(arg.slice(0, index), arg.slice(index + 1)); + } else { + ret.push(arg); + } + } + + return ret; +}; + +/** + * Parse command `args`. + * + * When listener(s) are available those + * callbacks are invoked, otherwise the "*" + * event is emitted and those actions are invoked. + * + * @param {Array} args + * @return {Command} for chaining + * @api private + */ + +Command.prototype.parseArgs = function(args, unknown) { + var name; + + if (args.length) { + name = args[0]; + if (this.listeners('command:' + name).length) { + this.emit('command:' + args.shift(), args, unknown); + } else { + this.emit('command:*', args); + } + } else { + outputHelpIfNecessary(this, unknown); + + // If there were no args and we have unknown options, + // then they are extraneous and we need to error. + if (unknown.length > 0) { + this.unknownOption(unknown[0]); + } + if (this.commands.length === 0 && + this._args.filter(function(a) { return a.required; }).length === 0) { + this.emit('command:*'); + } + } + + return this; +}; + +/** + * Return an option matching `arg` if any. + * + * @param {String} arg + * @return {Option} + * @api private + */ + +Command.prototype.optionFor = function(arg) { + for (var i = 0, len = this.options.length; i < len; ++i) { + if (this.options[i].is(arg)) { + return this.options[i]; + } + } +}; + +/** + * Parse options from `argv` returning `argv` + * void of these options. + * + * @param {Array} argv + * @return {Array} + * @api public + */ + +Command.prototype.parseOptions = function(argv) { + var args = [], + len = argv.length, + literal, + option, + arg; + + var unknownOptions = []; + + // parse options + for (var i = 0; i < len; ++i) { + arg = argv[i]; + + // literal args after -- + if (literal) { + args.push(arg); + continue; + } + + if (arg === '--') { + literal = true; + continue; + } + + // find matching Option + option = this.optionFor(arg); + + // option is defined + if (option) { + // requires arg + if (option.required) { + arg = argv[++i]; + if (arg == null) return this.optionMissingArgument(option); + this.emit('option:' + option.name(), arg); + // optional arg + } else if (option.optional) { + arg = argv[i + 1]; + if (arg == null || (arg[0] === '-' && arg !== '-')) { + arg = null; + } else { + ++i; + } + this.emit('option:' + option.name(), arg); + // bool + } else { + this.emit('option:' + option.name()); + } + continue; + } + + // looks like an option + if (arg.length > 1 && arg[0] === '-') { + unknownOptions.push(arg); + + // If the next argument looks like it might be + // an argument for this option, we pass it on. + // If it isn't, then it'll simply be ignored + if ((i + 1) < argv.length && argv[i + 1][0] !== '-') { + unknownOptions.push(argv[++i]); + } + continue; + } + + // arg + args.push(arg); + } + + return { args: args, unknown: unknownOptions }; +}; + +/** + * Return an object containing options as key-value pairs + * + * @return {Object} + * @api public + */ +Command.prototype.opts = function() { + var result = {}, + len = this.options.length; + + for (var i = 0; i < len; i++) { + var key = this.options[i].attributeName(); + result[key] = key === this._versionOptionName ? this._version : this[key]; + } + return result; +}; + +/** + * Argument `name` is missing. + * + * @param {String} name + * @api private + */ + +Command.prototype.missingArgument = function(name) { + console.error("error: missing required argument `%s'", name); + process.exit(1); +}; + +/** + * `Option` is missing an argument, but received `flag` or nothing. + * + * @param {String} option + * @param {String} flag + * @api private + */ + +Command.prototype.optionMissingArgument = function(option, flag) { + if (flag) { + console.error("error: option `%s' argument missing, got `%s'", option.flags, flag); + } else { + console.error("error: option `%s' argument missing", option.flags); + } + process.exit(1); +}; + +/** + * Unknown option `flag`. + * + * @param {String} flag + * @api private + */ + +Command.prototype.unknownOption = function(flag) { + if (this._allowUnknownOption) return; + console.error("error: unknown option `%s'", flag); + process.exit(1); +}; + +/** + * Variadic argument with `name` is not the last argument as required. + * + * @param {String} name + * @api private + */ + +Command.prototype.variadicArgNotLast = function(name) { + console.error("error: variadic arguments must be last `%s'", name); + process.exit(1); +}; + +/** + * Set the program version to `str`. + * + * This method auto-registers the "-V, --version" flag + * which will print the version number when passed. + * + * @param {String} str + * @param {String} [flags] + * @return {Command} for chaining + * @api public + */ + +Command.prototype.version = function(str, flags) { + if (arguments.length === 0) return this._version; + this._version = str; + flags = flags || '-V, --version'; + var versionOption = new Option(flags, 'output the version number'); + this._versionOptionName = versionOption.long.substr(2) || 'version'; + this.options.push(versionOption); + this.on('option:' + this._versionOptionName, function() { + process.stdout.write(str + '\n'); + process.exit(0); + }); + return this; +}; + +/** + * Set the description to `str`. + * + * @param {String} str + * @param {Object} argsDescription + * @return {String|Command} + * @api public + */ + +Command.prototype.description = function(str, argsDescription) { + if (arguments.length === 0) return this._description; + this._description = str; + this._argsDescription = argsDescription; + return this; +}; + +/** + * Set an alias for the command + * + * @param {String} alias + * @return {String|Command} + * @api public + */ + +Command.prototype.alias = function(alias) { + var command = this; + if (this.commands.length !== 0) { + command = this.commands[this.commands.length - 1]; + } + + if (arguments.length === 0) return command._alias; + + if (alias === command._name) throw new Error('Command alias can\'t be the same as its name'); + + command._alias = alias; + return this; +}; + +/** + * Set / get the command usage `str`. + * + * @param {String} str + * @return {String|Command} + * @api public + */ + +Command.prototype.usage = function(str) { + var args = this._args.map(function(arg) { + return humanReadableArgName(arg); + }); + + var usage = '[options]' + + (this.commands.length ? ' [command]' : '') + + (this._args.length ? ' ' + args.join(' ') : ''); + + if (arguments.length === 0) return this._usage || usage; + this._usage = str; + + return this; +}; + +/** + * Get or set the name of the command + * + * @param {String} str + * @return {String|Command} + * @api public + */ + +Command.prototype.name = function(str) { + if (arguments.length === 0) return this._name; + this._name = str; + return this; +}; + +/** + * Return prepared commands. + * + * @return {Array} + * @api private + */ + +Command.prototype.prepareCommands = function() { + return this.commands.filter(function(cmd) { + return !cmd._noHelp; + }).map(function(cmd) { + var args = cmd._args.map(function(arg) { + return humanReadableArgName(arg); + }).join(' '); + + return [ + cmd._name + + (cmd._alias ? '|' + cmd._alias : '') + + (cmd.options.length ? ' [options]' : '') + + (args ? ' ' + args : ''), + cmd._description + ]; + }); +}; + +/** + * Return the largest command length. + * + * @return {Number} + * @api private + */ + +Command.prototype.largestCommandLength = function() { + var commands = this.prepareCommands(); + return commands.reduce(function(max, command) { + return Math.max(max, command[0].length); + }, 0); +}; + +/** + * Return the largest option length. + * + * @return {Number} + * @api private + */ + +Command.prototype.largestOptionLength = function() { + var options = [].slice.call(this.options); + options.push({ + flags: '-h, --help' + }); + return options.reduce(function(max, option) { + return Math.max(max, option.flags.length); + }, 0); +}; + +/** + * Return the largest arg length. + * + * @return {Number} + * @api private + */ + +Command.prototype.largestArgLength = function() { + return this._args.reduce(function(max, arg) { + return Math.max(max, arg.name.length); + }, 0); +}; + +/** + * Return the pad width. + * + * @return {Number} + * @api private + */ + +Command.prototype.padWidth = function() { + var width = this.largestOptionLength(); + if (this._argsDescription && this._args.length) { + if (this.largestArgLength() > width) { + width = this.largestArgLength(); + } + } + + if (this.commands && this.commands.length) { + if (this.largestCommandLength() > width) { + width = this.largestCommandLength(); + } + } + + return width; +}; + +/** + * Return help for options. + * + * @return {String} + * @api private + */ + +Command.prototype.optionHelp = function() { + var width = this.padWidth(); + + // Append the help information + return this.options.map(function(option) { + return pad(option.flags, width) + ' ' + option.description + + ((option.bool && option.defaultValue !== undefined) ? ' (default: ' + JSON.stringify(option.defaultValue) + ')' : ''); + }).concat([pad('-h, --help', width) + ' ' + 'output usage information']) + .join('\n'); +}; + +/** + * Return command help documentation. + * + * @return {String} + * @api private + */ + +Command.prototype.commandHelp = function() { + if (!this.commands.length) return ''; + + var commands = this.prepareCommands(); + var width = this.padWidth(); + + return [ + 'Commands:', + commands.map(function(cmd) { + var desc = cmd[1] ? ' ' + cmd[1] : ''; + return (desc ? pad(cmd[0], width) : cmd[0]) + desc; + }).join('\n').replace(/^/gm, ' '), + '' + ].join('\n'); +}; + +/** + * Return program help documentation. + * + * @return {String} + * @api private + */ + +Command.prototype.helpInformation = function() { + var desc = []; + if (this._description) { + desc = [ + this._description, + '' + ]; + + var argsDescription = this._argsDescription; + if (argsDescription && this._args.length) { + var width = this.padWidth(); + desc.push('Arguments:'); + desc.push(''); + this._args.forEach(function(arg) { + desc.push(' ' + pad(arg.name, width) + ' ' + argsDescription[arg.name]); + }); + desc.push(''); + } + } + + var cmdName = this._name; + if (this._alias) { + cmdName = cmdName + '|' + this._alias; + } + var usage = [ + 'Usage: ' + cmdName + ' ' + this.usage(), + '' + ]; + + var cmds = []; + var commandHelp = this.commandHelp(); + if (commandHelp) cmds = [commandHelp]; + + var options = [ + 'Options:', + '' + this.optionHelp().replace(/^/gm, ' '), + '' + ]; + + return usage + .concat(desc) + .concat(options) + .concat(cmds) + .join('\n'); +}; + +/** + * Output help information for this command + * + * @api public + */ + +Command.prototype.outputHelp = function(cb) { + if (!cb) { + cb = function(passthru) { + return passthru; + }; + } + process.stdout.write(cb(this.helpInformation())); + this.emit('--help'); +}; + +/** + * Output help information and exit. + * + * @api public + */ + +Command.prototype.help = function(cb) { + this.outputHelp(cb); + process.exit(); +}; + +/** + * Camel-case the given `flag` + * + * @param {String} flag + * @return {String} + * @api private + */ + +function camelcase(flag) { + return flag.split('-').reduce(function(str, word) { + return str + word[0].toUpperCase() + word.slice(1); + }); +} + +/** + * Pad `str` to `width`. + * + * @param {String} str + * @param {Number} width + * @return {String} + * @api private + */ + +function pad(str, width) { + var len = Math.max(0, width - str.length); + return str + Array(len + 1).join(' '); +} + +/** + * Output help information if necessary + * + * @param {Command} command to output help for + * @param {Array} array of options to search for -h or --help + * @api private + */ + +function outputHelpIfNecessary(cmd, options) { + options = options || []; + for (var i = 0; i < options.length; i++) { + if (options[i] === '--help' || options[i] === '-h') { + cmd.outputHelp(); + process.exit(0); + } + } +} + +/** + * Takes an argument an returns its human readable equivalent for help usage. + * + * @param {Object} arg + * @return {String} + * @api private + */ + +function humanReadableArgName(arg) { + var nameOutput = arg.name + (arg.variadic === true ? '...' : ''); + + return arg.required + ? '<' + nameOutput + '>' + : '[' + nameOutput + ']'; +} + +// for versions before node v0.8 when there weren't `fs.existsSync` +function exists(file) { + try { + if (fs.statSync(file).isFile()) { + return true; + } + } catch (e) { + return false; + } +} diff --git a/node_modules/commander/package.json b/node_modules/commander/package.json new file mode 100644 index 0000000..38b6896 --- /dev/null +++ b/node_modules/commander/package.json @@ -0,0 +1,70 @@ +{ + "_from": "commander@^2.9.0", + "_id": "commander@2.20.3", + "_inBundle": false, + "_integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==", + "_location": "/commander", + "_phantomChildren": {}, + "_requested": { + "type": "range", + "registry": true, + "raw": "commander@^2.9.0", + "name": "commander", + "escapedName": "commander", + "rawSpec": "^2.9.0", + "saveSpec": null, + "fetchSpec": "^2.9.0" + }, + "_requiredBy": [ + "/xss" + ], + "_resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz", + "_shasum": "fd485e84c03eb4881c20722ba48035e8531aeb33", + "_spec": "commander@^2.9.0", + "_where": "/home/cargova/projects/beziapp.github.io/node_modules/xss", + "author": { + "name": "TJ Holowaychuk", + "email": "tj@vision-media.ca" + }, + "bugs": { + "url": "https://github.com/tj/commander.js/issues" + }, + "bundleDependencies": false, + "dependencies": {}, + "deprecated": false, + "description": "the complete solution for node.js command-line programs", + "devDependencies": { + "@types/node": "^12.7.8", + "eslint": "^6.4.0", + "should": "^13.2.3", + "sinon": "^7.5.0", + "standard": "^14.3.1", + "ts-node": "^8.4.1", + "typescript": "^3.6.3" + }, + "files": [ + "index.js", + "typings/index.d.ts" + ], + "homepage": "https://github.com/tj/commander.js#readme", + "keywords": [ + "commander", + "command", + "option", + "parser" + ], + "license": "MIT", + "main": "index", + "name": "commander", + "repository": { + "type": "git", + "url": "git+https://github.com/tj/commander.js.git" + }, + "scripts": { + "lint": "eslint index.js", + "test": "node test/run.js && npm run test-typings", + "test-typings": "tsc -p tsconfig.json" + }, + "typings": "typings/index.d.ts", + "version": "2.20.3" +} diff --git a/node_modules/commander/typings/index.d.ts b/node_modules/commander/typings/index.d.ts new file mode 100644 index 0000000..bcda277 --- /dev/null +++ b/node_modules/commander/typings/index.d.ts @@ -0,0 +1,310 @@ +// Type definitions for commander 2.11 +// Project: https://github.com/visionmedia/commander.js +// Definitions by: Alan Agius , Marcelo Dezem , vvakame , Jules Randolph +// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped + +declare namespace local { + + class Option { + flags: string; + required: boolean; + optional: boolean; + bool: boolean; + short?: string; + long: string; + description: string; + + /** + * Initialize a new `Option` with the given `flags` and `description`. + * + * @param {string} flags + * @param {string} [description] + */ + constructor(flags: string, description?: string); + } + + class Command extends NodeJS.EventEmitter { + [key: string]: any; + + args: string[]; + + /** + * Initialize a new `Command`. + * + * @param {string} [name] + */ + constructor(name?: string); + + /** + * Set the program version to `str`. + * + * This method auto-registers the "-V, --version" flag + * which will print the version number when passed. + * + * @param {string} str + * @param {string} [flags] + * @returns {Command} for chaining + */ + version(str: string, flags?: string): Command; + + /** + * Add command `name`. + * + * The `.action()` callback is invoked when the + * command `name` is specified via __ARGV__, + * and the remaining arguments are applied to the + * function for access. + * + * When the `name` is "*" an un-matched command + * will be passed as the first arg, followed by + * the rest of __ARGV__ remaining. + * + * @example + * program + * .version('0.0.1') + * .option('-C, --chdir ', 'change the working directory') + * .option('-c, --config ', 'set config path. defaults to ./deploy.conf') + * .option('-T, --no-tests', 'ignore test hook') + * + * program + * .command('setup') + * .description('run remote setup commands') + * .action(function() { + * console.log('setup'); + * }); + * + * program + * .command('exec ') + * .description('run the given remote command') + * .action(function(cmd) { + * console.log('exec "%s"', cmd); + * }); + * + * program + * .command('teardown [otherDirs...]') + * .description('run teardown commands') + * .action(function(dir, otherDirs) { + * console.log('dir "%s"', dir); + * if (otherDirs) { + * otherDirs.forEach(function (oDir) { + * console.log('dir "%s"', oDir); + * }); + * } + * }); + * + * program + * .command('*') + * .description('deploy the given env') + * .action(function(env) { + * console.log('deploying "%s"', env); + * }); + * + * program.parse(process.argv); + * + * @param {string} name + * @param {string} [desc] for git-style sub-commands + * @param {CommandOptions} [opts] command options + * @returns {Command} the new command + */ + command(name: string, desc?: string, opts?: commander.CommandOptions): Command; + + /** + * Define argument syntax for the top-level command. + * + * @param {string} desc + * @returns {Command} for chaining + */ + arguments(desc: string): Command; + + /** + * Parse expected `args`. + * + * For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`. + * + * @param {string[]} args + * @returns {Command} for chaining + */ + parseExpectedArgs(args: string[]): Command; + + /** + * Register callback `fn` for the command. + * + * @example + * program + * .command('help') + * .description('display verbose help') + * .action(function() { + * // output help here + * }); + * + * @param {(...args: any[]) => void} fn + * @returns {Command} for chaining + */ + action(fn: (...args: any[]) => void): Command; + + /** + * Define option with `flags`, `description` and optional + * coercion `fn`. + * + * The `flags` string should contain both the short and long flags, + * separated by comma, a pipe or space. The following are all valid + * all will output this way when `--help` is used. + * + * "-p, --pepper" + * "-p|--pepper" + * "-p --pepper" + * + * @example + * // simple boolean defaulting to false + * program.option('-p, --pepper', 'add pepper'); + * + * --pepper + * program.pepper + * // => Boolean + * + * // simple boolean defaulting to true + * program.option('-C, --no-cheese', 'remove cheese'); + * + * program.cheese + * // => true + * + * --no-cheese + * program.cheese + * // => false + * + * // required argument + * program.option('-C, --chdir ', 'change the working directory'); + * + * --chdir /tmp + * program.chdir + * // => "/tmp" + * + * // optional argument + * program.option('-c, --cheese [type]', 'add cheese [marble]'); + * + * @param {string} flags + * @param {string} [description] + * @param {((arg1: any, arg2: any) => void) | RegExp} [fn] function or default + * @param {*} [defaultValue] + * @returns {Command} for chaining + */ + option(flags: string, description?: string, fn?: ((arg1: any, arg2: any) => void) | RegExp, defaultValue?: any): Command; + option(flags: string, description?: string, defaultValue?: any): Command; + + /** + * Allow unknown options on the command line. + * + * @param {boolean} [arg] if `true` or omitted, no error will be thrown for unknown options. + * @returns {Command} for chaining + */ + allowUnknownOption(arg?: boolean): Command; + + /** + * Parse `argv`, settings options and invoking commands when defined. + * + * @param {string[]} argv + * @returns {Command} for chaining + */ + parse(argv: string[]): Command; + + /** + * Parse options from `argv` returning `argv` void of these options. + * + * @param {string[]} argv + * @returns {ParseOptionsResult} + */ + parseOptions(argv: string[]): commander.ParseOptionsResult; + + /** + * Return an object containing options as key-value pairs + * + * @returns {{[key: string]: any}} + */ + opts(): { [key: string]: any }; + + /** + * Set the description to `str`. + * + * @param {string} str + * @param {{[argName: string]: string}} argsDescription + * @return {(Command | string)} + */ + description(str: string, argsDescription?: {[argName: string]: string}): Command; + description(): string; + + /** + * Set an alias for the command. + * + * @param {string} alias + * @return {(Command | string)} + */ + alias(alias: string): Command; + alias(): string; + + /** + * Set or get the command usage. + * + * @param {string} str + * @return {(Command | string)} + */ + usage(str: string): Command; + usage(): string; + + /** + * Set the name of the command. + * + * @param {string} str + * @return {Command} + */ + name(str: string): Command; + + /** + * Get the name of the command. + * + * @return {string} + */ + name(): string; + + /** + * Output help information for this command. + * + * @param {(str: string) => string} [cb] + */ + outputHelp(cb?: (str: string) => string): void; + + /** Output help information and exit. + * + * @param {(str: string) => string} [cb] + */ + help(cb?: (str: string) => string): never; + } + +} + +declare namespace commander { + + type Command = local.Command + + type Option = local.Option + + interface CommandOptions { + noHelp?: boolean; + isDefault?: boolean; + } + + interface ParseOptionsResult { + args: string[]; + unknown: string[]; + } + + interface CommanderStatic extends Command { + Command: typeof local.Command; + Option: typeof local.Option; + CommandOptions: CommandOptions; + ParseOptionsResult: ParseOptionsResult; + } + +} + +declare const commander: commander.CommanderStatic; +export = commander; diff --git a/node_modules/cssfilter/LICENSE b/node_modules/cssfilter/LICENSE new file mode 100644 index 0000000..49b61eb --- /dev/null +++ b/node_modules/cssfilter/LICENSE @@ -0,0 +1,22 @@ +The MIT License (MIT) + +Copyright (c) 2015 老雷 + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + diff --git a/node_modules/cssfilter/README.md b/node_modules/cssfilter/README.md new file mode 100644 index 0000000..21cd65d --- /dev/null +++ b/node_modules/cssfilter/README.md @@ -0,0 +1,86 @@ +[![NPM version](https://badge.fury.io/js/cssfilter.png)](http://badge.fury.io/js/xss) +[![Build Status](https://secure.travis-ci.org/leizongmin/js-css-filter.png?branch=master)](http://travis-ci.org/leizongmin/js-css-filter) +[![Dependencies Status](https://david-dm.org/leizongmin/js-css-filter.png)](https://david-dm.org/leizongmin/js-css-filter) +[![coveralls-image](https://img.shields.io/coveralls/leizongmin/js-css-filter.svg?style=flat-square)](https://coveralls.io/r/leizongmin/js-css-filter?branch=master) + +# cssfilter +Sanitize untrusted CSS with a configuration specified by a Whitelist. 根据白名单过滤CSS + + +## 安装 + +```bash +$ npm install cssfilter --save +``` + + +## 使用方法 + +```javascript +var cssfilter = require('cssfilter'); +var css = cssfilter('position:fixed; /* this is comments */ width:100px; height:100px; background:#aaa;'); +console.log(css); +// 输出：width:100px; height:100px; background:#aaa; +// 因为position不在白名单允许范围 +``` + +或者： + +```javascript +options = { + // 白名单，可选 + whiteList: { + a: true, // true表示允许 + b: /^fixed|relative$/, // 正则test()返回true表示允许 + c: function (value) { + // 返回true表示允许 + }, + d: false // 除以上三个以外，所有值均表示不允许 + }, + // 当匹配到一个在白名单中的属性时 + onAttr: function (name, value, options) { + // name为属性名 + // value为属性值 + // 返回字符串表示覆盖此段CSS + // 不返回任何值表示使用默认生成方法，即 name:value + }, + // 当匹配到一个不在白名单中的属性时 + onIgnoreAttr: function (name, value, options) { + // name为属性名 + // value为属性值 + // 返回字符串表示覆盖此段CSS + // 不返回任何值表示使用默认生成方法，即将此段CSS去掉 + } +}; +mycss = new cssfilter.FilterCSS(options); +// then apply mycss.process() +css = mycss.process('position:fixed; width:100px; height:100px; background:#aaa;'); +console.log(css); +``` + + +## License + +``` +The MIT License (MIT) + +Copyright (c) 2015-2016 Zongmin Lei(雷宗民) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +``` diff --git a/node_modules/cssfilter/lib/css.js b/node_modules/cssfilter/lib/css.js new file mode 100644 index 0000000..49e9707 --- /dev/null +++ b/node_modules/cssfilter/lib/css.js @@ -0,0 +1,110 @@ +/** + * cssfilter + * + * @author 老雷 + */ + +var DEFAULT = require('./default'); +var parseStyle = require('./parser'); +var _ = require('./util'); + + +/** + * 返回值是否为空 + * + * @param {Object} obj + * @return {Boolean} + */ +function isNull (obj) { + return (obj === undefined || obj === null); +} + +/** + * 浅拷贝对象 + * + * @param {Object} obj + * @return {Object} + */ +function shallowCopyObject (obj) { + var ret = {}; + for (var i in obj) { + ret[i] = obj[i]; + } + return ret; +} + +/** + * 创建CSS过滤器 + * + * @param {Object} options + * - {Object} whiteList + * - {Function} onAttr + * - {Function} onIgnoreAttr + * - {Function} safeAttrValue + */ +function FilterCSS (options) { + options = shallowCopyObject(options || {}); + options.whiteList = options.whiteList || DEFAULT.whiteList; + options.onAttr = options.onAttr || DEFAULT.onAttr; + options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr; + options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue; + this.options = options; +} + +FilterCSS.prototype.process = function (css) { + // 兼容各种奇葩输入 + css = css || ''; + css = css.toString(); + if (!css) return ''; + + var me = this; + var options = me.options; + var whiteList = options.whiteList; + var onAttr = options.onAttr; + var onIgnoreAttr = options.onIgnoreAttr; + var safeAttrValue = options.safeAttrValue; + + var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) { + + var check = whiteList[name]; + var isWhite = false; + if (check === true) isWhite = check; + else if (typeof check === 'function') isWhite = check(value); + else if (check instanceof RegExp) isWhite = check.test(value); + if (isWhite !== true) isWhite = false; + + // 如果过滤后 value 为空则直接忽略 + value = safeAttrValue(name, value); + if (!value) return; + + var opts = { + position: position, + sourcePosition: sourcePosition, + source: source, + isWhite: isWhite + }; + + if (isWhite) { + + var ret = onAttr(name, value, opts); + if (isNull(ret)) { + return name + ':' + value; + } else { + return ret; + } + + } else { + + var ret = onIgnoreAttr(name, value, opts); + if (!isNull(ret)) { + return ret; + } + + } + }); + + return retCSS; +}; + + +module.exports = FilterCSS; diff --git a/node_modules/cssfilter/lib/default.js b/node_modules/cssfilter/lib/default.js new file mode 100644 index 0000000..b677225 --- /dev/null +++ b/node_modules/cssfilter/lib/default.js @@ -0,0 +1,398 @@ +/** + * cssfilter + * + * @author 老雷 + */ + +function getDefaultWhiteList () { + // 白名单值说明： + // true: 允许该属性 + // Function: function (val) { } 返回true表示允许该属性，其他值均表示不允许 + // RegExp: regexp.test(val) 返回true表示允许该属性，其他值均表示不允许 + // 除上面列出的值外均表示不允许 + var whiteList = {}; + + whiteList['align-content'] = false; // default: auto + whiteList['align-items'] = false; // default: auto + whiteList['align-self'] = false; // default: auto + whiteList['alignment-adjust'] = false; // default: auto + whiteList['alignment-baseline'] = false; // default: baseline + whiteList['all'] = false; // default: depending on individual properties + whiteList['anchor-point'] = false; // default: none + whiteList['animation'] = false; // default: depending on individual properties + whiteList['animation-delay'] = false; // default: 0 + whiteList['animation-direction'] = false; // default: normal + whiteList['animation-duration'] = false; // default: 0 + whiteList['animation-fill-mode'] = false; // default: none + whiteList['animation-iteration-count'] = false; // default: 1 + whiteList['animation-name'] = false; // default: none + whiteList['animation-play-state'] = false; // default: running + whiteList['animation-timing-function'] = false; // default: ease + whiteList['azimuth'] = false; // default: center + whiteList['backface-visibility'] = false; // default: visible + whiteList['background'] = true; // default: depending on individual properties + whiteList['background-attachment'] = true; // default: scroll + whiteList['background-clip'] = true; // default: border-box + whiteList['background-color'] = true; // default: transparent + whiteList['background-image'] = true; // default: none + whiteList['background-origin'] = true; // default: padding-box + whiteList['background-position'] = true; // default: 0% 0% + whiteList['background-repeat'] = true; // default: repeat + whiteList['background-size'] = true; // default: auto + whiteList['baseline-shift'] = false; // default: baseline + whiteList['binding'] = false; // default: none + whiteList['bleed'] = false; // default: 6pt + whiteList['bookmark-label'] = false; // default: content() + whiteList['bookmark-level'] = false; // default: none + whiteList['bookmark-state'] = false; // default: open + whiteList['border'] = true; // default: depending on individual properties + whiteList['border-bottom'] = true; // default: depending on individual properties + whiteList['border-bottom-color'] = true; // default: current color + whiteList['border-bottom-left-radius'] = true; // default: 0 + whiteList['border-bottom-right-radius'] = true; // default: 0 + whiteList['border-bottom-style'] = true; // default: none + whiteList['border-bottom-width'] = true; // default: medium + whiteList['border-collapse'] = true; // default: separate + whiteList['border-color'] = true; // default: depending on individual properties + whiteList['border-image'] = true; // default: none + whiteList['border-image-outset'] = true; // default: 0 + whiteList['border-image-repeat'] = true; // default: stretch + whiteList['border-image-slice'] = true; // default: 100% + whiteList['border-image-source'] = true; // default: none + whiteList['border-image-width'] = true; // default: 1 + whiteList['border-left'] = true; // default: depending on individual properties + whiteList['border-left-color'] = true; // default: current color + whiteList['border-left-style'] = true; // default: none + whiteList['border-left-width'] = true; // default: medium + whiteList['border-radius'] = true; // default: 0 + whiteList['border-right'] = true; // default: depending on individual properties + whiteList['border-right-color'] = true; // default: current color + whiteList['border-right-style'] = true; // default: none + whiteList['border-right-width'] = true; // default: medium + whiteList['border-spacing'] = true; // default: 0 + whiteList['border-style'] = true; // default: depending on individual properties + whiteList['border-top'] = true; // default: depending on individual properties + whiteList['border-top-color'] = true; // default: current color + whiteList['border-top-left-radius'] = true; // default: 0 + whiteList['border-top-right-radius'] = true; // default: 0 + whiteList['border-top-style'] = true; // default: none + whiteList['border-top-width'] = true; // default: medium + whiteList['border-width'] = true; // default: depending on individual properties + whiteList['bottom'] = false; // default: auto + whiteList['box-decoration-break'] = true; // default: slice + whiteList['box-shadow'] = true; // default: none + whiteList['box-sizing'] = true; // default: content-box + whiteList['box-snap'] = true; // default: none + whiteList['box-suppress'] = true; // default: show + whiteList['break-after'] = true; // default: auto + whiteList['break-before'] = true; // default: auto + whiteList['break-inside'] = true; // default: auto + whiteList['caption-side'] = false; // default: top + whiteList['chains'] = false; // default: none + whiteList['clear'] = true; // default: none + whiteList['clip'] = false; // default: auto + whiteList['clip-path'] = false; // default: none + whiteList['clip-rule'] = false; // default: nonzero + whiteList['color'] = true; // default: implementation dependent + whiteList['color-interpolation-filters'] = true; // default: auto + whiteList['column-count'] = false; // default: auto + whiteList['column-fill'] = false; // default: balance + whiteList['column-gap'] = false; // default: normal + whiteList['column-rule'] = false; // default: depending on individual properties + whiteList['column-rule-color'] = false; // default: current color + whiteList['column-rule-style'] = false; // default: medium + whiteList['column-rule-width'] = false; // default: medium + whiteList['column-span'] = false; // default: none + whiteList['column-width'] = false; // default: auto + whiteList['columns'] = false; // default: depending on individual properties + whiteList['contain'] = false; // default: none + whiteList['content'] = false; // default: normal + whiteList['counter-increment'] = false; // default: none + whiteList['counter-reset'] = false; // default: none + whiteList['counter-set'] = false; // default: none + whiteList['crop'] = false; // default: auto + whiteList['cue'] = false; // default: depending on individual properties + whiteList['cue-after'] = false; // default: none + whiteList['cue-before'] = false; // default: none + whiteList['cursor'] = false; // default: auto + whiteList['direction'] = false; // default: ltr + whiteList['display'] = true; // default: depending on individual properties + whiteList['display-inside'] = true; // default: auto + whiteList['display-list'] = true; // default: none + whiteList['display-outside'] = true; // default: inline-level + whiteList['dominant-baseline'] = false; // default: auto + whiteList['elevation'] = false; // default: level + whiteList['empty-cells'] = false; // default: show + whiteList['filter'] = false; // default: none + whiteList['flex'] = false; // default: depending on individual properties + whiteList['flex-basis'] = false; // default: auto + whiteList['flex-direction'] = false; // default: row + whiteList['flex-flow'] = false; // default: depending on individual properties + whiteList['flex-grow'] = false; // default: 0 + whiteList['flex-shrink'] = false; // default: 1 + whiteList['flex-wrap'] = false; // default: nowrap + whiteList['float'] = false; // default: none + whiteList['float-offset'] = false; // default: 0 0 + whiteList['flood-color'] = false; // default: black + whiteList['flood-opacity'] = false; // default: 1 + whiteList['flow-from'] = false; // default: none + whiteList['flow-into'] = false; // default: none + whiteList['font'] = true; // default: depending on individual properties + whiteList['font-family'] = true; // default: implementation dependent + whiteList['font-feature-settings'] = true; // default: normal + whiteList['font-kerning'] = true; // default: auto + whiteList['font-language-override'] = true; // default: normal + whiteList['font-size'] = true; // default: medium + whiteList['font-size-adjust'] = true; // default: none + whiteList['font-stretch'] = true; // default: normal + whiteList['font-style'] = true; // default: normal + whiteList['font-synthesis'] = true; // default: weight style + whiteList['font-variant'] = true; // default: normal + whiteList['font-variant-alternates'] = true; // default: normal + whiteList['font-variant-caps'] = true; // default: normal + whiteList['font-variant-east-asian'] = true; // default: normal + whiteList['font-variant-ligatures'] = true; // default: normal + whiteList['font-variant-numeric'] = true; // default: normal + whiteList['font-variant-position'] = true; // default: normal + whiteList['font-weight'] = true; // default: normal + whiteList['grid'] = false; // default: depending on individual properties + whiteList['grid-area'] = false; // default: depending on individual properties + whiteList['grid-auto-columns'] = false; // default: auto + whiteList['grid-auto-flow'] = false; // default: none + whiteList['grid-auto-rows'] = false; // default: auto + whiteList['grid-column'] = false; // default: depending on individual properties + whiteList['grid-column-end'] = false; // default: auto + whiteList['grid-column-start'] = false; // default: auto + whiteList['grid-row'] = false; // default: depending on individual properties + whiteList['grid-row-end'] = false; // default: auto + whiteList['grid-row-start'] = false; // default: auto + whiteList['grid-template'] = false; // default: depending on individual properties + whiteList['grid-template-areas'] = false; // default: none + whiteList['grid-template-columns'] = false; // default: none + whiteList['grid-template-rows'] = false; // default: none + whiteList['hanging-punctuation'] = false; // default: none + whiteList['height'] = true; // default: auto + whiteList['hyphens'] = false; // default: manual + whiteList['icon'] = false; // default: auto + whiteList['image-orientation'] = false; // default: auto + whiteList['image-resolution'] = false; // default: normal + whiteList['ime-mode'] = false; // default: auto + whiteList['initial-letters'] = false; // default: normal + whiteList['inline-box-align'] = false; // default: last + whiteList['justify-content'] = false; // default: auto + whiteList['justify-items'] = false; // default: auto + whiteList['justify-self'] = false; // default: auto + whiteList['left'] = false; // default: auto + whiteList['letter-spacing'] = true; // default: normal + whiteList['lighting-color'] = true; // default: white + whiteList['line-box-contain'] = false; // default: block inline replaced + whiteList['line-break'] = false; // default: auto + whiteList['line-grid'] = false; // default: match-parent + whiteList['line-height'] = false; // default: normal + whiteList['line-snap'] = false; // default: none + whiteList['line-stacking'] = false; // default: depending on individual properties + whiteList['line-stacking-ruby'] = false; // default: exclude-ruby + whiteList['line-stacking-shift'] = false; // default: consider-shifts + whiteList['line-stacking-strategy'] = false; // default: inline-line-height + whiteList['list-style'] = true; // default: depending on individual properties + whiteList['list-style-image'] = true; // default: none + whiteList['list-style-position'] = true; // default: outside + whiteList['list-style-type'] = true; // default: disc + whiteList['margin'] = true; // default: depending on individual properties + whiteList['margin-bottom'] = true; // default: 0 + whiteList['margin-left'] = true; // default: 0 + whiteList['margin-right'] = true; // default: 0 + whiteList['margin-top'] = true; // default: 0 + whiteList['marker-offset'] = false; // default: auto + whiteList['marker-side'] = false; // default: list-item + whiteList['marks'] = false; // default: none + whiteList['mask'] = false; // default: border-box + whiteList['mask-box'] = false; // default: see individual properties + whiteList['mask-box-outset'] = false; // default: 0 + whiteList['mask-box-repeat'] = false; // default: stretch + whiteList['mask-box-slice'] = false; // default: 0 fill + whiteList['mask-box-source'] = false; // default: none + whiteList['mask-box-width'] = false; // default: auto + whiteList['mask-clip'] = false; // default: border-box + whiteList['mask-image'] = false; // default: none + whiteList['mask-origin'] = false; // default: border-box + whiteList['mask-position'] = false; // default: center + whiteList['mask-repeat'] = false; // default: no-repeat + whiteList['mask-size'] = false; // default: border-box + whiteList['mask-source-type'] = false; // default: auto + whiteList['mask-type'] = false; // default: luminance + whiteList['max-height'] = true; // default: none + whiteList['max-lines'] = false; // default: none + whiteList['max-width'] = true; // default: none + whiteList['min-height'] = true; // default: 0 + whiteList['min-width'] = true; // default: 0 + whiteList['move-to'] = false; // default: normal + whiteList['nav-down'] = false; // default: auto + whiteList['nav-index'] = false; // default: auto + whiteList['nav-left'] = false; // default: auto + whiteList['nav-right'] = false; // default: auto + whiteList['nav-up'] = false; // default: auto + whiteList['object-fit'] = false; // default: fill + whiteList['object-position'] = false; // default: 50% 50% + whiteList['opacity'] = false; // default: 1 + whiteList['order'] = false; // default: 0 + whiteList['orphans'] = false; // default: 2 + whiteList['outline'] = false; // default: depending on individual properties + whiteList['outline-color'] = false; // default: invert + whiteList['outline-offset'] = false; // default: 0 + whiteList['outline-style'] = false; // default: none + whiteList['outline-width'] = false; // default: medium + whiteList['overflow'] = false; // default: depending on individual properties + whiteList['overflow-wrap'] = false; // default: normal + whiteList['overflow-x'] = false; // default: visible + whiteList['overflow-y'] = false; // default: visible + whiteList['padding'] = true; // default: depending on individual properties + whiteList['padding-bottom'] = true; // default: 0 + whiteList['padding-left'] = true; // default: 0 + whiteList['padding-right'] = true; // default: 0 + whiteList['padding-top'] = true; // default: 0 + whiteList['page'] = false; // default: auto + whiteList['page-break-after'] = false; // default: auto + whiteList['page-break-before'] = false; // default: auto + whiteList['page-break-inside'] = false; // default: auto + whiteList['page-policy'] = false; // default: start + whiteList['pause'] = false; // default: implementation dependent + whiteList['pause-after'] = false; // default: implementation dependent + whiteList['pause-before'] = false; // default: implementation dependent + whiteList['perspective'] = false; // default: none + whiteList['perspective-origin'] = false; // default: 50% 50% + whiteList['pitch'] = false; // default: medium + whiteList['pitch-range'] = false; // default: 50 + whiteList['play-during'] = false; // default: auto + whiteList['position'] = false; // default: static + whiteList['presentation-level'] = false; // default: 0 + whiteList['quotes'] = false; // default: text + whiteList['region-fragment'] = false; // default: auto + whiteList['resize'] = false; // default: none + whiteList['rest'] = false; // default: depending on individual properties + whiteList['rest-after'] = false; // default: none + whiteList['rest-before'] = false; // default: none + whiteList['richness'] = false; // default: 50 + whiteList['right'] = false; // default: auto + whiteList['rotation'] = false; // default: 0 + whiteList['rotation-point'] = false; // default: 50% 50% + whiteList['ruby-align'] = false; // default: auto + whiteList['ruby-merge'] = false; // default: separate + whiteList['ruby-position'] = false; // default: before + whiteList['shape-image-threshold'] = false; // default: 0.0 + whiteList['shape-outside'] = false; // default: none + whiteList['shape-margin'] = false; // default: 0 + whiteList['size'] = false; // default: auto + whiteList['speak'] = false; // default: auto + whiteList['speak-as'] = false; // default: normal + whiteList['speak-header'] = false; // default: once + whiteList['speak-numeral'] = false; // default: continuous + whiteList['speak-punctuation'] = false; // default: none + whiteList['speech-rate'] = false; // default: medium + whiteList['stress'] = false; // default: 50 + whiteList['string-set'] = false; // default: none + whiteList['tab-size'] = false; // default: 8 + whiteList['table-layout'] = false; // default: auto + whiteList['text-align'] = true; // default: start + whiteList['text-align-last'] = true; // default: auto + whiteList['text-combine-upright'] = true; // default: none + whiteList['text-decoration'] = true; // default: none + whiteList['text-decoration-color'] = true; // default: currentColor + whiteList['text-decoration-line'] = true; // default: none + whiteList['text-decoration-skip'] = true; // default: objects + whiteList['text-decoration-style'] = true; // default: solid + whiteList['text-emphasis'] = true; // default: depending on individual properties + whiteList['text-emphasis-color'] = true; // default: currentColor + whiteList['text-emphasis-position'] = true; // default: over right + whiteList['text-emphasis-style'] = true; // default: none + whiteList['text-height'] = true; // default: auto + whiteList['text-indent'] = true; // default: 0 + whiteList['text-justify'] = true; // default: auto + whiteList['text-orientation'] = true; // default: mixed + whiteList['text-overflow'] = true; // default: clip + whiteList['text-shadow'] = true; // default: none + whiteList['text-space-collapse'] = true; // default: collapse + whiteList['text-transform'] = true; // default: none + whiteList['text-underline-position'] = true; // default: auto + whiteList['text-wrap'] = true; // default: normal + whiteList['top'] = false; // default: auto + whiteList['transform'] = false; // default: none + whiteList['transform-origin'] = false; // default: 50% 50% 0 + whiteList['transform-style'] = false; // default: flat + whiteList['transition'] = false; // default: depending on individual properties + whiteList['transition-delay'] = false; // default: 0s + whiteList['transition-duration'] = false; // default: 0s + whiteList['transition-property'] = false; // default: all + whiteList['transition-timing-function'] = false; // default: ease + whiteList['unicode-bidi'] = false; // default: normal + whiteList['vertical-align'] = false; // default: baseline + whiteList['visibility'] = false; // default: visible + whiteList['voice-balance'] = false; // default: center + whiteList['voice-duration'] = false; // default: auto + whiteList['voice-family'] = false; // default: implementation dependent + whiteList['voice-pitch'] = false; // default: medium + whiteList['voice-range'] = false; // default: medium + whiteList['voice-rate'] = false; // default: normal + whiteList['voice-stress'] = false; // default: normal + whiteList['voice-volume'] = false; // default: medium + whiteList['volume'] = false; // default: medium + whiteList['white-space'] = false; // default: normal + whiteList['widows'] = false; // default: 2 + whiteList['width'] = true; // default: auto + whiteList['will-change'] = false; // default: auto + whiteList['word-break'] = true; // default: normal + whiteList['word-spacing'] = true; // default: normal + whiteList['word-wrap'] = true; // default: normal + whiteList['wrap-flow'] = false; // default: auto + whiteList['wrap-through'] = false; // default: wrap + whiteList['writing-mode'] = false; // default: horizontal-tb + whiteList['z-index'] = false; // default: auto + + return whiteList; +} + + +/** + * 匹配到白名单上的一个属性时 + * + * @param {String} name + * @param {String} value + * @param {Object} options + * @return {String} + */ +function onAttr (name, value, options) { + // do nothing +} + +/** + * 匹配到不在白名单上的一个属性时 + * + * @param {String} name + * @param {String} value + * @param {Object} options + * @return {String} + */ +function onIgnoreAttr (name, value, options) { + // do nothing +} + +var REGEXP_URL_JAVASCRIPT = /javascript\s*\:/img; + +/** + * 过滤属性值 + * + * @param {String} name + * @param {String} value + * @return {String} + */ +function safeAttrValue(name, value) { + if (REGEXP_URL_JAVASCRIPT.test(value)) return ''; + return value; +} + + +exports.whiteList = getDefaultWhiteList(); +exports.getDefaultWhiteList = getDefaultWhiteList; +exports.onAttr = onAttr; +exports.onIgnoreAttr = onIgnoreAttr; +exports.safeAttrValue = safeAttrValue; diff --git a/node_modules/cssfilter/lib/index.js b/node_modules/cssfilter/lib/index.js new file mode 100644 index 0000000..712f55f --- /dev/null +++ b/node_modules/cssfilter/lib/index.js @@ -0,0 +1,32 @@ +/** + * cssfilter + * + * @author 老雷 + */ + +var DEFAULT = require('./default'); +var FilterCSS = require('./css'); + + +/** + * XSS过滤 + * + * @param {String} css 要过滤的CSS代码 + * @param {Object} options 选项：whiteList, onAttr, onIgnoreAttr + * @return {String} + */ +function filterCSS (html, options) { + var xss = new FilterCSS(options); + return xss.process(html); +} + + +// 输出 +exports = module.exports = filterCSS; +exports.FilterCSS = FilterCSS; +for (var i in DEFAULT) exports[i] = DEFAULT[i]; + +// 在浏览器端使用 +if (typeof window !== 'undefined') { + window.filterCSS = module.exports; +} diff --git a/node_modules/cssfilter/lib/parser.js b/node_modules/cssfilter/lib/parser.js new file mode 100644 index 0000000..fcb9418 --- /dev/null +++ b/node_modules/cssfilter/lib/parser.js @@ -0,0 +1,74 @@ +/** + * cssfilter + * + * @author 老雷 + */ + +var _ = require('./util'); + + +/** + * 解析style + * + * @param {String} css + * @param {Function} onAttr 处理属性的函数 + * 参数格式： function (sourcePosition, position, name, value, source) + * @return {String} + */ +function parseStyle (css, onAttr) { + css = _.trimRight(css); + if (css[css.length - 1] !== ';') css += ';'; + var cssLength = css.length; + var isParenthesisOpen = false; + var lastPos = 0; + var i = 0; + var retCSS = ''; + + function addNewAttr () { + // 如果没有正常的闭合圆括号，则直接忽略当前属性 + if (!isParenthesisOpen) { + var source = _.trim(css.slice(lastPos, i)); + var j = source.indexOf(':'); + if (j !== -1) { + var name = _.trim(source.slice(0, j)); + var value = _.trim(source.slice(j + 1)); + // 必须有属性名称 + if (name) { + var ret = onAttr(lastPos, retCSS.length, name, value, source); + if (ret) retCSS += ret + '; '; + } + } + } + lastPos = i + 1; + } + + for (; i < cssLength; i++) { + var c = css[i]; + if (c === '/' && css[i + 1] === '*') { + // 备注开始 + var j = css.indexOf('*/', i + 2); + // 如果没有正常的备注结束，则后面的部分全部跳过 + if (j === -1) break; + // 直接将当前位置调到备注结尾，并且初始化状态 + i = j + 1; + lastPos = i + 1; + isParenthesisOpen = false; + } else if (c === '(') { + isParenthesisOpen = true; + } else if (c === ')') { + isParenthesisOpen = false; + } else if (c === ';') { + if (isParenthesisOpen) { + // 在圆括号里面，忽略 + } else { + addNewAttr(); + } + } else if (c === '\n') { + addNewAttr(); + } + } + + return _.trim(retCSS); +} + +module.exports = parseStyle; diff --git a/node_modules/cssfilter/lib/util.js b/node_modules/cssfilter/lib/util.js new file mode 100644 index 0000000..c8b4f7b --- /dev/null +++ b/node_modules/cssfilter/lib/util.js @@ -0,0 +1,35 @@ +module.exports = { + indexOf: function (arr, item) { + var i, j; + if (Array.prototype.indexOf) { + return arr.indexOf(item); + } + for (i = 0, j = arr.length; i < j; i++) { + if (arr[i] === item) { + return i; + } + } + return -1; + }, + forEach: function (arr, fn, scope) { + var i, j; + if (Array.prototype.forEach) { + return arr.forEach(fn, scope); + } + for (i = 0, j = arr.length; i < j; i++) { + fn.call(scope, arr[i], i, arr); + } + }, + trim: function (str) { + if (String.prototype.trim) { + return str.trim(); + } + return str.replace(/(^\s*)|(\s*$)/g, ''); + }, + trimRight: function (str) { + if (String.prototype.trimRight) { + return str.trimRight(); + } + return str.replace(/(\s*$)/g, ''); + } +}; diff --git a/node_modules/cssfilter/package.json b/node_modules/cssfilter/package.json new file mode 100644 index 0000000..118566b --- /dev/null +++ b/node_modules/cssfilter/package.json @@ -0,0 +1,77 @@ +{ + "_from": "cssfilter@0.0.10", + "_id": "cssfilter@0.0.10", + "_inBundle": false, + "_integrity": "sha1-xtJnJjKi5cg+AT5oZKQs6N79IK4=", + "_location": "/cssfilter", + "_phantomChildren": {}, + "_requested": { + "type": "version", + "registry": true, + "raw": "cssfilter@0.0.10", + "name": "cssfilter", + "escapedName": "cssfilter", + "rawSpec": "0.0.10", + "saveSpec": null, + "fetchSpec": "0.0.10" + }, + "_requiredBy": [ + "/xss" + ], + "_resolved": "https://registry.npmjs.org/cssfilter/-/cssfilter-0.0.10.tgz", + "_shasum": "c6d2672632a2e5c83e013e6864a42ce8defd20ae", + "_spec": "cssfilter@0.0.10", + "_where": "/home/cargova/projects/beziapp.github.io/node_modules/xss", + "author": { + "name": "Zongmin Lei", + "email": "leizongmin@gmail.com" + }, + "bugs": { + "url": "https://github.com/leizongmin/js-css-filter/issues" + }, + "bundleDependencies": false, + "deprecated": false, + "description": "Sanitize untrusted CSS with a configuration specified by a Whitelist. 根据白名单过滤CSS", + "devDependencies": { + "blanket": "^1.1.6", + "browserify": "^13.1.1", + "coveralls": "^2.11.14", + "istanbul": "^0.4.5", + "mocha": "^3.1.2", + "should": "^11.1.1", + "uglify-js": "^2.7.4" + }, + "files": [ + "lib" + ], + "homepage": "https://github.com/leizongmin/js-css-filter", + "keywords": [ + "sanitization", + "xss", + "sanitize", + "sanitisation", + "input", + "security", + "escape", + "encode", + "filter", + "validator", + "html", + "css", + "injection", + "whitelist" + ], + "license": "MIT", + "main": "lib/index.js", + "name": "cssfilter", + "repository": { + "type": "git", + "url": "git+https://github.com/leizongmin/js-css-filter.git" + }, + "scripts": { + "build": "./build", + "prepublish": "npm run test && npm run build", + "test": "istanbul cover _mocha --report lcovonly -- -t 5000 -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage" + }, + "version": "0.0.10" +} diff --git a/node_modules/xss/LICENSE b/node_modules/xss/LICENSE new file mode 100644 index 0000000..f840eb4 --- /dev/null +++ b/node_modules/xss/LICENSE @@ -0,0 +1,23 @@ +Copyright (c) 2012-2018 Zongmin Lei(雷宗民) +http://ucdok.com + +The MIT License + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. \ No newline at end of file diff --git a/node_modules/xss/README.md b/node_modules/xss/README.md new file mode 100644 index 0000000..4f202f1 --- /dev/null +++ b/node_modules/xss/README.md @@ -0,0 +1,499 @@ +[![NPM version][npm-image]][npm-url] +[![build status][travis-image]][travis-url] +[![Test coverage][coveralls-image]][coveralls-url] +[![David deps][david-image]][david-url] +[![node version][node-image]][node-url] +[![npm download][download-image]][download-url] +[![npm license][license-image]][download-url] + +[npm-image]: https://img.shields.io/npm/v/xss.svg?style=flat-square +[npm-url]: https://npmjs.org/package/xss +[travis-image]: https://img.shields.io/travis/leizongmin/js-xss.svg?style=flat-square +[travis-url]: https://travis-ci.org/leizongmin/js-xss +[coveralls-image]: https://img.shields.io/coveralls/leizongmin/js-xss.svg?style=flat-square +[coveralls-url]: https://coveralls.io/r/leizongmin/js-xss?branch=master +[david-image]: https://img.shields.io/david/leizongmin/js-xss.svg?style=flat-square +[david-url]: https://david-dm.org/leizongmin/js-xss +[node-image]: https://img.shields.io/badge/node.js-%3E=_0.10-green.svg?style=flat-square +[node-url]: http://nodejs.org/download/ +[download-image]: https://img.shields.io/npm/dm/xss.svg?style=flat-square +[download-url]: https://npmjs.org/package/xss +[license-image]: https://img.shields.io/npm/l/xss.svg + +# Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist. + +[![Greenkeeper badge](https://badges.greenkeeper.io/leizongmin/js-xss.svg)](https://greenkeeper.io/) + +![xss](https://nodei.co/npm/xss.png?downloads=true&stars=true) + +--- + +`xss` is a module used to filter input from users to prevent XSS attacks. +([What is XSS attack?](http://en.wikipedia.org/wiki/Cross-site_scripting)) + +**Project Homepage:** http://jsxss.com + +**Try Online:** http://jsxss.com/en/try.html + +**[中文版文档](https://github.com/leizongmin/js-xss/blob/master/README.zh.md)** + +--- + +## Features + +* Specifies HTML tags and their attributes allowed with whitelist +* Handle any tags or attributes using custom function. + +## Reference + +* [XSS Filter Evasion Cheat Sheet](https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet) +* [Data URI scheme](http://en.wikipedia.org/wiki/Data_URI_scheme) +* [XSS with Data URI Scheme](http://hi.baidu.com/badzzzz/item/bdbafe83144619c199255f7b) + +## Benchmark (for references only) + +* the xss module: 8.2 MB/s +* `xss()` function from module `validator@0.3.7`: 4.4 MB/s + +For test code please refer to `benchmark` directory. + +## They are using xss module + +* **nodeclub** - A Node.js bbs using MongoDB - https://github.com/cnodejs/nodeclub +* **cnpmjs.org** - Private npm registry and web for Enterprise - https://github.com/cnpm/cnpmjs.org + +## Install + +### NPM + +```bash +npm install xss +``` + +### Bower + +```bash +bower install xss +``` + +Or + +```bash +bower install https://github.com/leizongmin/js-xss.git +``` + +## Usages + +### On Node.js + +```javascript +var xss = require("xss"); +var html = xss(''); +console.log(html); +``` + +### On Browser + +Shim mode (reference file `test/test.html`): + +```html + + +``` + +AMD mode - shim: + +```html + +``` + +**Notes: please don't use the URL https://rawgit.com/leizongmin/js-xss/master/dist/xss.js in production environment.** + +## Command Line Tool + +### Process File + +You can use the xss command line tool to process a file. Usage: + +```bash +xss -i -o +``` + +Example: + +```bash +xss -i origin.html -o target.html +``` + +### Active Test + +Run the following command, them you can type HTML +code in the command-line, and check the filtered output: + +```bash +xss -t +``` + +For more details, please run `$ xss -h` to see it. + +## Custom filter rules + +When using the `xss()` function, the second parameter could be used to specify +custom rules: + +```javascript +options = {}; // Custom rules +html = xss('', options); +``` + +To avoid passing `options` every time, you can also do it in a faster way by +creating a `FilterXSS` instance: + +```javascript +options = {}; // Custom rules +myxss = new xss.FilterXSS(options); +// then apply myxss.process() +html = myxss.process(''); +``` + +Details of parameters in `options` would be described below. + +### Whitelist + +By specifying a `whiteList`, e.g. `{ 'tagName': [ 'attr-1', 'attr-2' ] }`. Tags +and attributes not in the whitelist would be filter out. For example: + +```javascript +// only tag a and its attributes href, title, target are allowed +var options = { + whiteList: { + a: ["href", "title", "target"] + } +}; +// With the configuration specified above, the following HTML: +// Hello +// would become: +// Hello +``` + +For the default whitelist, please refer `xss.whiteList`. + +### Customize the handler function for matched tags + +By specifying the handler function with `onTag`: + +```javascript +function onTag(tag, html, options) { + // tag is the name of current tag, e.g. 'a' for tag + // html is the HTML of this tag, e.g. '' for tag + // options is some addition informations: + // isWhite boolean, whether the tag is in whitelist + // isClosing boolean, whether the tag is a closing tag, e.g. true for + // position integer, the position of the tag in output result + // sourcePosition integer, the position of the tag in input HTML source + // If a string is returned, the current tag would be replaced with the string + // If return nothing, the default measure would be taken: + // If in whitelist: filter attributes using onTagAttr, as described below + // If not in whitelist: handle by onIgnoreTag, as described below +} +``` + +### Customize the handler function for attributes of matched tags + +By specifying the handler function with `onTagAttr`: + +```javascript +function onTagAttr(tag, name, value, isWhiteAttr) { + // tag is the name of current tag, e.g. 'a' for tag + // name is the name of current attribute, e.g. 'href' for href="#" + // isWhiteAttr whether the attribute is in whitelist + // If a string is returned, the attribute would be replaced with the string + // If return nothing, the default measure would be taken: + // If in whitelist: filter the value using safeAttrValue as described below + // If not in whitelist: handle by onIgnoreTagAttr, as described below +} +``` + +### Customize the handler function for tags not in the whitelist + +By specifying the handler function with `onIgnoreTag`: + +```javascript +function onIgnoreTag(tag, html, options) { + // Parameters are the same with onTag + // If a string is returned, the tag would be replaced with the string + // If return nothing, the default measure would be taken (specifies using + // escape, as described below) +} +``` + +### Customize the handler function for attributes not in the whitelist + +By specifying the handler function with `onIgnoreTagAttr`: + +```javascript +function onIgnoreTagAttr(tag, name, value, isWhiteAttr) { + // Parameters are the same with onTagAttr + // If a string is returned, the value would be replaced with this string + // If return nothing, then keep default (remove the attribute) +} +``` + +### Customize escaping function for HTML + +By specifying the handler function with `escapeHtml`. Following is the default +function **(Modification is not recommended)**: + +```javascript +function escapeHtml(html) { + return html.replace(//g, ">"); +} +``` + +### Customize escaping function for value of attributes + +By specifying the handler function with `safeAttrValue`: + +```javascript +function safeAttrValue(tag, name, value) { + // Parameters are the same with onTagAttr (without options) + // Return the value as a string +} +``` + +### Customize CSS filter + +If you allow the attribute `style`, the value will be processed by [cssfilter](https://github.com/leizongmin/js-css-filter) module. The cssfilter module includes a default css whitelist. You can specify the options for cssfilter module like this: + +```javascript +myxss = new xss.FilterXSS({ + css: { + whiteList: { + position: /^fixed|relative$/, + top: true, + left: true + } + } +}); +html = myxss.process(''); +``` + +If you don't want to filter out the `style` content, just specify `false` to the `css` option: + +```javascript +myxss = new xss.FilterXSS({ + css: false +}); +``` + +For more help, please see https://github.com/leizongmin/js-css-filter + +### Quick Start + +#### Filter out tags not in the whitelist + +By using `stripIgnoreTag` parameter: + +* `true` filter out tags not in the whitelist +* `false`: by default: escape the tag using configured `escape` function + +Example: + +If `stripIgnoreTag = true` is set, the following code: + +```html +code: +``` + +would output filtered: + +```html +code:alert(/xss/); +``` + +#### Filter out tags and tag bodies not in the whitelist + +By using `stripIgnoreTagBody` parameter: + +* `false|null|undefined` by default: do nothing +* `'*'|true`: filter out all tags not in the whitelist +* `['tag1', 'tag2']`: filter out only specified tags not in the whitelist + +Example: + +If `stripIgnoreTagBody = ['script']` is set, the following code: + +```html +code: +``` + +would output filtered: + +```html +code: +``` + +#### Filter out HTML comments + +By using `allowCommentTag` parameter: + +* `true`: do nothing +* `false` by default: filter out HTML comments + +Example: + +If `allowCommentTag = false` is set, the following code: + +```html +code: END +``` + +would output filtered: + +```html +code: END +``` + +## Examples + +### Allow attributes of whitelist tags start with `data-` + +```javascript +var source = '
hello
'; +var html = xss(source, { + onIgnoreTagAttr: function(tag, name, value, isWhiteAttr) { + if (name.substr(0, 5) === "data-") { + // escape its value using built-in escapeAttrValue function + return name + '="' + xss.escapeAttrValue(value) + '"'; + } + } +}); + +console.log("%s\nconvert to:\n%s", source, html); +``` + +Result: + +```html +
hello
+convert to: +
hello
+``` + +### Allow tags start with `x-` + +```javascript +var source = "hewwww"; +var html = xss(source, { + onIgnoreTag: function(tag, html, options) { + if (tag.substr(0, 2) === "x-") { + // do not filter its attributes + return html; + } + } +}); + +console.log("%s\nconvert to:\n%s", source, html); +``` + +Result: + +```html +hewwww +convert to: +<x>hewwww +``` + +### Parse images in HTML + +```javascript +var source = + 'abcd'; +var list = []; +var html = xss(source, { + onTagAttr: function(tag, name, value, isWhiteAttr) { + if (tag === "img" && name === "src") { + // Use the built-in friendlyAttrValue function to escape attribute + // values. It supports converting entity tags such as < to printable + // characters such as < + list.push(xss.friendlyAttrValue(value)); + } + // Return nothing, means keep the default handling measure + } +}); + +console.log("image list:\n%s", list.join(", ")); +``` + +Result: + +```html +image list: +img1, img2, img3, img4 +``` + +### Filter out HTML tags (keeps only plain text) + +```javascript +var source = "helloend"; +var html = xss(source, { + whiteList: [], // empty, means filter out all tags + stripIgnoreTag: true, // filter out all HTML not in the whilelist + stripIgnoreTagBody: ["script"] // the script tag is a special case, we need + // to filter out its content +}); + +console.log("text: %s", html); +``` + +Result: + +```html +text: helloend +``` + +## License + +```text +Copyright (c) 2012-2018 Zongmin Lei(雷宗民) +http://ucdok.com + +The MIT License + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +``` diff --git a/node_modules/xss/README.zh.md b/node_modules/xss/README.zh.md new file mode 100644 index 0000000..2483d4d --- /dev/null +++ b/node_modules/xss/README.zh.md @@ -0,0 +1,485 @@ +[![NPM version][npm-image]][npm-url] +[![build status][travis-image]][travis-url] +[![Test coverage][coveralls-image]][coveralls-url] +[![David deps][david-image]][david-url] +[![node version][node-image]][node-url] +[![npm download][download-image]][download-url] +[![npm license][license-image]][download-url] + +[npm-image]: https://img.shields.io/npm/v/xss.svg?style=flat-square +[npm-url]: https://npmjs.org/package/xss +[travis-image]: https://img.shields.io/travis/leizongmin/js-xss.svg?style=flat-square +[travis-url]: https://travis-ci.org/leizongmin/js-xss +[coveralls-image]: https://img.shields.io/coveralls/leizongmin/js-xss.svg?style=flat-square +[coveralls-url]: https://coveralls.io/r/leizongmin/js-xss?branch=master +[david-image]: https://img.shields.io/david/leizongmin/js-xss.svg?style=flat-square +[david-url]: https://david-dm.org/leizongmin/js-xss +[node-image]: https://img.shields.io/badge/node.js-%3E=_0.10-green.svg?style=flat-square +[node-url]: http://nodejs.org/download/ +[download-image]: https://img.shields.io/npm/dm/xss.svg?style=flat-square +[download-url]: https://npmjs.org/package/xss +[license-image]: https://img.shields.io/npm/l/xss.svg + +# 根据白名单过滤 HTML(防止 XSS 攻击) + +![xss](https://nodei.co/npm/xss.png?downloads=true&stars=true) + +--- + +`xss`是一个用于对用户输入的内容进行过滤，以避免遭受 XSS 攻击的模块（[什么是 XSS 攻击？](http://baike.baidu.com/view/2161269.htm)）。主要用于论坛、博客、网上商店等等一些可允许用户录入页面排版、格式控制相关的 HTML 的场景，`xss`模块通过白名单来控制允许的标签及相关的标签属性，另外还提供了一系列的接口以便用户扩展，比其他同类模块更为灵活。 + +**项目主页：** http://jsxss.com + +**在线测试：** http://jsxss.com/zh/try.html + +--- + +## 特性 + +* 白名单控制允许的 HTML 标签及各标签的属性 +* 通过自定义处理函数，可对任意标签及其属性进行处理 + +## 参考资料 + +* [XSS 与字符编码的那些事儿 ---科普文](http://drops.wooyun.org/tips/689) +* [腾讯实例教程：那些年我们一起学 XSS](http://www.wooyun.org/whitehats/%E5%BF%83%E4%BC%A4%E7%9A%84%E7%98%A6%E5%AD%90) +* [mXSS 攻击的成因及常见种类](http://drops.wooyun.org/tips/956) +* [XSS Filter Evasion Cheat Sheet](https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet) +* [Data URI scheme](http://en.wikipedia.org/wiki/Data_URI_scheme) +* [XSS with Data URI Scheme](http://hi.baidu.com/badzzzz/item/bdbafe83144619c199255f7b) + +## 性能（仅作参考） + +* xss 模块：8.2 MB/s +* validator@0.3.7 模块的 xss()函数：4.4 MB/s + +测试代码参考 benchmark 目录 + +## 安装 + +### NPM + +```bash +npm install xss +``` + +### Bower + +```bash +bower install xss +``` + +或者 + +```bash +bower install https://github.com/leizongmin/js-xss.git +``` + +## 使用方法 + +### 在 Node.js 中使用 + +```javascript +var xss = require("xss"); +var html = xss(''); +console.log(html); +``` + +### 在浏览器端使用 + +Shim 模式（参考文件 `test/test.html`）: + +```html + + +``` + +AMD 模式（参考文件 `test/test_amd.html`）: + +```html + +``` + +**说明：请勿将 URL https://rawgit.com/leizongmin/js-xss/master/dist/xss.js 用于生产环境。** + +### 使用命令行工具来对文件进行 XSS 处理 + +### 处理文件 + +可通过内置的 `xss` 命令来对输入的文件进行 XSS 处理。使用方法： + +```bash +xss -i <源文件> -o <目标文件> +``` + +例： + +```bash +xss -i origin.html -o target.html +``` + +### 在线测试 + +执行以下命令，可在命令行中输入 HTML 代码，并看到过滤后的代码： + +```bash +xss -t +``` + +详细命令行参数说明，请输入 `$ xss -h` 来查看。 + +## 自定义过滤规则 + +在调用 `xss()` 函数进行过滤时，可通过第二个参数来设置自定义规则： + +```javascript +options = {}; // 自定义规则 +html = xss('', options); +``` + +如果不想每次都传入一个 `options` 参数，可以创建一个 `FilterXSS` 实例（使用这种方法速度更快）： + +``` +options = {}; // 自定义规则 +myxss = new xss.FilterXSS(options); +// 以后直接调用 myxss.process() 来处理即可 +html = myxss.process(''); +``` + +`options` 参数的详细说明见下文。 + +### 白名单 + +通过 `whiteList` 来指定，格式为：`{'标签名': ['属性1', '属性2']}`。不在白名单上的标签将被过滤，不在白名单上的属性也会被过滤。以下是示例： + +```javascript +// 只允许a标签，该标签只允许href, title, target这三个属性 +var options = { + whiteList: { + a: ["href", "title", "target"] + } +}; +// 使用以上配置后，下面的HTML +// 大家好 +// 将被过滤为 +// 大家好 +``` + +默认白名单参考 `xss.whiteList`。 + +### 自定义匹配到标签时的处理方法 + +通过 `onTag` 来指定相应的处理函数。以下是详细说明： + +```javascript +function onTag(tag, html, options) { + // tag是当前的标签名称，比如标签，则tag的值是'a' + // html是该标签的HTML，比如标签，则html的值是'' + // options是一些附加的信息，具体如下： + // isWhite boolean类型，表示该标签是否在白名单上 + // isClosing boolean类型，表示该标签是否为闭合标签，比如时为true + // position integer类型，表示当前标签在输出的结果中的起始位置 + // sourcePosition integer类型，表示当前标签在原HTML中的起始位置 + // 如果返回一个字符串，则当前标签将被替换为该字符串 + // 如果不返回任何值，则使用默认的处理方法： + // 在白名单上： 通过onTagAttr来过滤属性，详见下文 + // 不在白名单上：通过onIgnoreTag指定，详见下文 +} +``` + +### 自定义匹配到标签的属性时的处理方法 + +通过 `onTagAttr` 来指定相应的处理函数。以下是详细说明： + +```javascript +function onTagAttr(tag, name, value, isWhiteAttr) { + // tag是当前的标签名称，比如标签，则tag的值是'a' + // name是当前属性的名称，比如href="#"，则name的值是'href' + // value是当前属性的值，比如href="#"，则value的值是'#' + // isWhiteAttr是否为白名单上的属性 + // 如果返回一个字符串，则当前属性值将被替换为该字符串 + // 如果不返回任何值，则使用默认的处理方法 + // 在白名单上： 调用safeAttrValue来过滤属性值，并输出该属性，详见下文 + // 不在白名单上：通过onIgnoreTagAttr指定，详见下文 +} +``` + +### 自定义匹配到不在白名单上的标签时的处理方法 + +通过 `onIgnoreTag` 来指定相应的处理函数。以下是详细说明： + +```javascript +function onIgnoreTag(tag, html, options) { + // 参数说明与onTag相同 + // 如果返回一个字符串，则当前标签将被替换为该字符串 + // 如果不返回任何值，则使用默认的处理方法（通过escape指定，详见下文） +} +``` + +### 自定义匹配到不在白名单上的属性时的处理方法 + +通过 `onIgnoreTagAttr` 来指定相应的处理函数。以下是详细说明： + +```javascript +function onIgnoreTagAttr(tag, name, value, isWhiteAttr) { + // 参数说明与onTagAttr相同 + // 如果返回一个字符串，则当前属性值将被替换为该字符串 + // 如果不返回任何值，则使用默认的处理方法（删除该属） +} +``` + +### 自定义 HTML 转义函数 + +通过 `escapeHtml` 来指定相应的处理函数。以下是默认代码 **（不建议修改）** ： + +```javascript +function escapeHtml(html) { + return html.replace(//g, ">"); +} +``` + +### 自定义标签属性值的转义函数 + +通过 `safeAttrValue` 来指定相应的处理函数。以下是详细说明： + +```javascript +function safeAttrValue(tag, name, value) { + // 参数说明与onTagAttr相同（没有options参数） + // 返回一个字符串表示该属性值 +} +``` + +### 自定义 CSS 过滤器 + +如果配置中允许了标签的 `style` 属性，则它的值会通过[cssfilter](https://github.com/leizongmin/js-css-filter) 模块处理。 +`cssfilter` 模块包含了一个默认的 CSS 白名单，你可以通过以下的方式配置： + +```javascript +myxss = new xss.FilterXSS({ + css: { + whiteList: { + position: /^fixed|relative$/, + top: true, + left: true + } + } +}); +html = myxss.process(''); +``` + +如果不想使用 CSS 过滤器来处理 `style` 属性的内容，可指定 `css` 选项的值为 `false`： + +```javascript +myxss = new xss.FilterXSS({ + css: false +}); +``` + +要获取更多的帮助信息可看这里：https://github.com/leizongmin/js-css-filter + +### 快捷配置 + +#### 去掉不在白名单上的标签 + +通过 `stripIgnoreTag` 来设置： + +* `true`：去掉不在白名单上的标签 +* `false`：（默认），使用配置的`escape`函数对该标签进行转义 + +示例： + +当设置 `stripIgnoreTag = true`时，以下代码 + +```html +code: +``` + +过滤后将输出 + +```html +code:alert(/xss/); +``` + +#### 去掉不在白名单上的标签及标签体 + +通过 `stripIgnoreTagBody` 来设置： + +* `false|null|undefined`：（默认），不特殊处理 +* `'*'|true`：去掉所有不在白名单上的标签 +* `['tag1', 'tag2']`：仅去掉指定的不在白名单上的标签 + +示例： + +当设置 `stripIgnoreTagBody = ['script']`时，以下代码 + +```html +code: +``` + +过滤后将输出 + +```html +code: +``` + +#### 去掉 HTML 备注 + +通过 `allowCommentTag` 来设置： + +* `true`：不处理 +* `false`：（默认），自动去掉 HTML 中的备注 + +示例： + +当设置 `allowCommentTag = false` 时，以下代码 + +```html +code: END +``` + +过滤后将输出 + +```html +code: END +``` + +## 应用实例 + +### 允许标签以 data-开头的属性 + +```javascript +var source = '
hello
'; +var html = xss(source, { + onIgnoreTagAttr: function(tag, name, value, isWhiteAttr) { + if (name.substr(0, 5) === "data-") { + // 通过内置的escapeAttrValue函数来对属性值进行转义 + return name + '="' + xss.escapeAttrValue(value) + '"'; + } + } +}); + +console.log("%s\nconvert to:\n%s", source, html); +``` + +运行结果： + +```html +
hello
+convert to: +
hello
+``` + +### 允许名称以 x-开头的标签 + +```javascript +var source = "hewwww"; +var html = xss(source, { + onIgnoreTag: function(tag, html, options) { + if (tag.substr(0, 2) === "x-") { + // 不对其属性列表进行过滤 + return html; + } + } +}); + +console.log("%s\nconvert to:\n%s", source, html); +``` + +运行结果： + +```html +hewwww +convert to: +<x>hewwww +``` + +### 分析 HTML 代码中的图片列表 + +```javascript +var source = + 'abcd'; +var list = []; +var html = xss(source, { + onTagAttr: function(tag, name, value, isWhiteAttr) { + if (tag === "img" && name === "src") { + // 使用内置的friendlyAttrValue函数来对属性值进行转义，可将<这类的实体标记转换成打印字符< + list.push(xss.friendlyAttrValue(value)); + } + // 不返回任何值，表示还是按照默认的方法处理 + } +}); + +console.log("image list:\n%s", list.join(", ")); +``` + +运行结果： + +```html +image list: +img1, img2, img3, img4 +``` + +### 去除 HTML 标签（只保留文本内容） + +```javascript +var source = "helloend"; +var html = xss(source, { + whiteList: [], // 白名单为空，表示过滤所有标签 + stripIgnoreTag: true, // 过滤所有非白名单标签的HTML + stripIgnoreTagBody: ["script"] // script标签较特殊，需要过滤标签中间的内容 +}); + +console.log("text: %s", html); +``` + +运行结果： + +```html +text: helloend +``` + +## 授权协议 + +```text +Copyright (c) 2012-2018 Zongmin Lei(雷宗民) +http://ucdok.com + +The MIT License + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +``` diff --git a/node_modules/xss/bin/xss b/node_modules/xss/bin/xss new file mode 100755 index 0000000..35e902f --- /dev/null +++ b/node_modules/xss/bin/xss @@ -0,0 +1,67 @@ +#!/usr/bin/env node + +/** + * 命令行工具 + * + * @author Zongmin Lei + */ + +var fs = require('fs'); +var path = require('path'); +var program = require('commander'); +var xss = require('../'); +var packageInfo = require('../package.json'); + +program + .version(packageInfo.version) + .option('-t, --test', 'active test') + .option('-i, --input ', 'input file name') + .option('-o, --output ', 'output filename') + .option('-c, --config ', 'load custom config') + .option('-s, --strip-ignore-tag', 'set stripIgnoreTag=true') + .option('-b, --strip-ignore-tag-body', 'set stripIgnoreTagBody=true'); + +program.on('--help', function () { + console.log(' Examples:'); + console.log(''); + console.log(' $ xss -t'); + console.log(' $ xss -i origin.html'); + console.log(' $ xss -i origin.html -o targer.html'); + console.log(' $ xss -i origin.html -c config.js'); + console.log(' $ xss -i origin.html -s'); + console.log(' $ xss -i origin.html -s -b'); + console.log(''); + console.log(' For more details, please see: https://npmjs.org/package/xss') +}); + +program.parse(process.argv); + +if (program.test) { + require('../lib/cli'); + return; +} + +var config = {}; +if (program.config) { + config = require(path.resolve(program.config)); +} +if (program.input) { + var input = fs.readFileSync(program.input, 'utf8'); +} else { + program.help(); +} + +if (program['strip-ignore-tag']) { + config.stripIgnoreTag = true; +} +if (program['strip-ignore-tag-body']) { + config.stripIgnoreTagBody = true; +} + +var output = xss(input, config); + +if (program.output) { + fs.writeFileSync(program.output, output); +} else { + console.log(output); +} diff --git a/node_modules/xss/dist/test.html b/node_modules/xss/dist/test.html new file mode 100644 index 0000000..cae361e --- /dev/null +++ b/node_modules/xss/dist/test.html @@ -0,0 +1,15 @@ + + + + 测试 + + + + 

+
+
+
+
\ No newline at end of file
diff --git a/node_modules/xss/dist/xss.js b/node_modules/xss/dist/xss.js
new file mode 100644
index 0000000..9583a6b
--- /dev/null
+++ b/node_modules/xss/dist/xss.js
@@ -0,0 +1,1609 @@
+(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o
+ */
+
+var FilterCSS = require("cssfilter").FilterCSS;
+var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
+var _ = require("./util");
+
+function getDefaultWhiteList() {
+  return {
+    a: ["target", "href", "title"],
+    abbr: ["title"],
+    address: [],
+    area: ["shape", "coords", "href", "alt"],
+    article: [],
+    aside: [],
+    audio: ["autoplay", "controls", "loop", "preload", "src"],
+    b: [],
+    bdi: ["dir"],
+    bdo: ["dir"],
+    big: [],
+    blockquote: ["cite"],
+    br: [],
+    caption: [],
+    center: [],
+    cite: [],
+    code: [],
+    col: ["align", "valign", "span", "width"],
+    colgroup: ["align", "valign", "span", "width"],
+    dd: [],
+    del: ["datetime"],
+    details: ["open"],
+    div: [],
+    dl: [],
+    dt: [],
+    em: [],
+    font: ["color", "size", "face"],
+    footer: [],
+    h1: [],
+    h2: [],
+    h3: [],
+    h4: [],
+    h5: [],
+    h6: [],
+    header: [],
+    hr: [],
+    i: [],
+    img: ["src", "alt", "title", "width", "height"],
+    ins: ["datetime"],
+    li: [],
+    mark: [],
+    nav: [],
+    ol: [],
+    p: [],
+    pre: [],
+    s: [],
+    section: [],
+    small: [],
+    span: [],
+    sub: [],
+    sup: [],
+    strong: [],
+    table: ["width", "border", "align", "valign"],
+    tbody: ["align", "valign"],
+    td: ["width", "rowspan", "colspan", "align", "valign"],
+    tfoot: ["align", "valign"],
+    th: ["width", "rowspan", "colspan", "align", "valign"],
+    thead: ["align", "valign"],
+    tr: ["rowspan", "align", "valign"],
+    tt: [],
+    u: [],
+    ul: [],
+    video: ["autoplay", "controls", "loop", "preload", "src", "height", "width"]
+  };
+}
+
+var defaultCSSFilter = new FilterCSS();
+
+/**
+ * default onTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onTag(tag, html, options) {
+  // do nothing
+}
+
+/**
+ * default onIgnoreTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onIgnoreTag(tag, html, options) {
+  // do nothing
+}
+
+/**
+ * default onTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onTagAttr(tag, name, value) {
+  // do nothing
+}
+
+/**
+ * default onIgnoreTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onIgnoreTagAttr(tag, name, value) {
+  // do nothing
+}
+
+/**
+ * default escapeHtml function
+ *
+ * @param {String} html
+ */
+function escapeHtml(html) {
+  return html.replace(REGEXP_LT, "<").replace(REGEXP_GT, ">");
+}
+
+/**
+ * default safeAttrValue function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @param {Object} cssFilter
+ * @return {String}
+ */
+function safeAttrValue(tag, name, value, cssFilter) {
+  // unescape attribute value firstly
+  value = friendlyAttrValue(value);
+
+  if (name === "href" || name === "src") {
+    // filter `href` and `src` attribute
+    // only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#`
+    value = _.trim(value);
+    if (value === "#") return "#";
+    if (
+      !(
+        value.substr(0, 7) === "http://" ||
+        value.substr(0, 8) === "https://" ||
+        value.substr(0, 7) === "mailto:" ||
+        value.substr(0, 4) === "tel:" ||
+        value[0] === "#" ||
+        value[0] === "/"
+      )
+    ) {
+      return "";
+    }
+  } else if (name === "background") {
+    // filter `background` attribute (maybe no use)
+    // `javascript:`
+    REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
+      return "";
+    }
+  } else if (name === "style") {
+    // `expression()`
+    REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
+      return "";
+    }
+    // `url()`
+    REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
+      REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
+      if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
+        return "";
+      }
+    }
+    if (cssFilter !== false) {
+      cssFilter = cssFilter || defaultCSSFilter;
+      value = cssFilter.process(value);
+    }
+  }
+
+  // escape `<>"` before returns
+  value = escapeAttrValue(value);
+  return value;
+}
+
+// RegExp list
+var REGEXP_LT = //g;
+var REGEXP_QUOTE = /"/g;
+var REGEXP_QUOTE_2 = /"/g;
+var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
+var REGEXP_ATTR_VALUE_COLON = /:?/gim;
+var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
+var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
+var REGEXP_DEFAULT_ON_TAG_ATTR_4 = /((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_7 = /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
+
+/**
+ * escape doube quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function escapeQuote(str) {
+  return str.replace(REGEXP_QUOTE, """);
+}
+
+/**
+ * unescape double quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function unescapeQuote(str) {
+  return str.replace(REGEXP_QUOTE_2, '"');
+}
+
+/**
+ * escape html entities
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeHtmlEntities(str) {
+  return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode(str, code) {
+    return code[0] === "x" || code[0] === "X"
+      ? String.fromCharCode(parseInt(code.substr(1), 16))
+      : String.fromCharCode(parseInt(code, 10));
+  });
+}
+
+/**
+ * escape html5 new danger entities
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeDangerHtml5Entities(str) {
+  return str
+    .replace(REGEXP_ATTR_VALUE_COLON, ":")
+    .replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
+}
+
+/**
+ * clear nonprintable characters
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function clearNonPrintableCharacter(str) {
+  var str2 = "";
+  for (var i = 0, len = str.length; i < len; i++) {
+    str2 += str.charCodeAt(i) < 32 ? " " : str.charAt(i);
+  }
+  return _.trim(str2);
+}
+
+/**
+ * get friendly attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function friendlyAttrValue(str) {
+  str = unescapeQuote(str);
+  str = escapeHtmlEntities(str);
+  str = escapeDangerHtml5Entities(str);
+  str = clearNonPrintableCharacter(str);
+  return str;
+}
+
+/**
+ * unescape attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeAttrValue(str) {
+  str = escapeQuote(str);
+  str = escapeHtml(str);
+  return str;
+}
+
+/**
+ * `onIgnoreTag` function for removing all the tags that are not in whitelist
+ */
+function onIgnoreTagStripAll() {
+  return "";
+}
+
+/**
+ * remove tag body
+ * specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
+ *
+ * @param {array} tags
+ * @param {function} next
+ */
+function StripTagBody(tags, next) {
+  if (typeof next !== "function") {
+    next = function() {};
+  }
+
+  var isRemoveAllTag = !Array.isArray(tags);
+  function isRemoveTag(tag) {
+    if (isRemoveAllTag) return true;
+    return _.indexOf(tags, tag) !== -1;
+  }
+
+  var removeList = [];
+  var posStart = false;
+
+  return {
+    onIgnoreTag: function(tag, html, options) {
+      if (isRemoveTag(tag)) {
+        if (options.isClosing) {
+          var ret = "[/removed]";
+          var end = options.position + ret.length;
+          removeList.push([
+            posStart !== false ? posStart : options.position,
+            end
+          ]);
+          posStart = false;
+          return ret;
+        } else {
+          if (!posStart) {
+            posStart = options.position;
+          }
+          return "[removed]";
+        }
+      } else {
+        return next(tag, html, options);
+      }
+    },
+    remove: function(html) {
+      var rethtml = "";
+      var lastPos = 0;
+      _.forEach(removeList, function(pos) {
+        rethtml += html.slice(lastPos, pos[0]);
+        lastPos = pos[1];
+      });
+      rethtml += html.slice(lastPos);
+      return rethtml;
+    }
+  };
+}
+
+/**
+ * remove html comments
+ *
+ * @param {String} html
+ * @return {String}
+ */
+function stripCommentTag(html) {
+  return html.replace(STRIP_COMMENT_TAG_REGEXP, "");
+}
+var STRIP_COMMENT_TAG_REGEXP = //g;
+
+/**
+ * remove invisible characters
+ *
+ * @param {String} html
+ * @return {String}
+ */
+function stripBlankChar(html) {
+  var chars = html.split("");
+  chars = chars.filter(function(char) {
+    var c = char.charCodeAt(0);
+    if (c === 127) return false;
+    if (c <= 31) {
+      if (c === 10 || c === 13) return true;
+      return false;
+    }
+    return true;
+  });
+  return chars.join("");
+}
+
+exports.whiteList = getDefaultWhiteList();
+exports.getDefaultWhiteList = getDefaultWhiteList;
+exports.onTag = onTag;
+exports.onIgnoreTag = onIgnoreTag;
+exports.onTagAttr = onTagAttr;
+exports.onIgnoreTagAttr = onIgnoreTagAttr;
+exports.safeAttrValue = safeAttrValue;
+exports.escapeHtml = escapeHtml;
+exports.escapeQuote = escapeQuote;
+exports.unescapeQuote = unescapeQuote;
+exports.escapeHtmlEntities = escapeHtmlEntities;
+exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
+exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
+exports.friendlyAttrValue = friendlyAttrValue;
+exports.escapeAttrValue = escapeAttrValue;
+exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
+exports.StripTagBody = StripTagBody;
+exports.stripCommentTag = stripCommentTag;
+exports.stripBlankChar = stripBlankChar;
+exports.cssFilter = defaultCSSFilter;
+exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
+
+},{"./util":4,"cssfilter":8}],2:[function(require,module,exports){
+/**
+ * xss
+ *
+ * @author Zongmin Lei
+ */
+
+var DEFAULT = require("./default");
+var parser = require("./parser");
+var FilterXSS = require("./xss");
+
+/**
+ * filter xss function
+ *
+ * @param {String} html
+ * @param {Object} options { whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml }
+ * @return {String}
+ */
+function filterXSS(html, options) {
+  var xss = new FilterXSS(options);
+  return xss.process(html);
+}
+
+exports = module.exports = filterXSS;
+exports.filterXSS = filterXSS;
+exports.FilterXSS = FilterXSS;
+for (var i in DEFAULT) exports[i] = DEFAULT[i];
+for (var i in parser) exports[i] = parser[i];
+
+// using `xss` on the browser, output `filterXSS` to the globals
+if (typeof window !== "undefined") {
+  window.filterXSS = module.exports;
+}
+
+// using `xss` on the WebWorker, output `filterXSS` to the globals
+function isWorkerEnv() {
+  return typeof self !== 'undefined' && typeof DedicatedWorkerGlobalScope !== 'undefined' && self instanceof DedicatedWorkerGlobalScope;
+}
+if (isWorkerEnv()) {
+  self.filterXSS = module.exports;
+}
+
+},{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){
+/**
+ * Simple HTML Parser
+ *
+ * @author Zongmin Lei
+ */
+
+var _ = require("./util");
+
+/**
+ * get tag name
+ *
+ * @param {String} html e.g. ''
+ * @return {String}
+ */
+function getTagName(html) {
+  var i = _.spaceIndex(html);
+  if (i === -1) {
+    var tagName = html.slice(1, -1);
+  } else {
+    var tagName = html.slice(1, i + 1);
+  }
+  tagName = _.trim(tagName).toLowerCase();
+  if (tagName.slice(0, 1) === "/") tagName = tagName.slice(1);
+  if (tagName.slice(-1) === "/") tagName = tagName.slice(0, -1);
+  return tagName;
+}
+
+/**
+ * is close tag?
+ *
+ * @param {String} html 如：''
+ * @return {Boolean}
+ */
+function isClosing(html) {
+  return html.slice(0, 2) === "") {
+          rethtml += escapeHtml(html.slice(lastPos, tagStart));
+          currentHtml = html.slice(tagStart, currentPos + 1);
+          currentTagName = getTagName(currentHtml);
+          rethtml += onTag(
+            tagStart,
+            rethtml.length,
+            currentTagName,
+            currentHtml,
+            isClosing(currentHtml)
+          );
+          lastPos = currentPos + 1;
+          tagStart = false;
+          continue;
+        }
+        if ((c === '"' || c === "'") && html.charAt(currentPos - 1) === "=") {
+          quoteStart = c;
+          continue;
+        }
+      } else {
+        if (c === quoteStart) {
+          quoteStart = false;
+          continue;
+        }
+      }
+    }
+  }
+  if (lastPos < html.length) {
+    rethtml += escapeHtml(html.substr(lastPos));
+  }
+
+  return rethtml;
+}
+
+var REGEXP_ILLEGAL_ATTR_NAME = /[^a-zA-Z0-9_:\.\-]/gim;
+
+/**
+ * parse input attributes and returns processed attributes
+ *
+ * @param {String} html e.g. `href="#" target="_blank"`
+ * @param {Function} onAttr e.g. `function (name, value)`
+ * @return {String}
+ */
+function parseAttr(html, onAttr) {
+  "user strict";
+
+  var lastPos = 0;
+  var retAttrs = [];
+  var tmpName = false;
+  var len = html.length;
+
+  function addAttr(name, value) {
+    name = _.trim(name);
+    name = name.replace(REGEXP_ILLEGAL_ATTR_NAME, "").toLowerCase();
+    if (name.length < 1) return;
+    var ret = onAttr(name, value || "");
+    if (ret) retAttrs.push(ret);
+  }
+
+  // 逐个分析字符
+  for (var i = 0; i < len; i++) {
+    var c = html.charAt(i);
+    var v, j;
+    if (tmpName === false && c === "=") {
+      tmpName = html.slice(lastPos, i);
+      lastPos = i + 1;
+      continue;
+    }
+    if (tmpName !== false) {
+      if (
+        i === lastPos &&
+        (c === '"' || c === "'") &&
+        html.charAt(i - 1) === "="
+      ) {
+        j = html.indexOf(c, i + 1);
+        if (j === -1) {
+          break;
+        } else {
+          v = _.trim(html.slice(lastPos + 1, j));
+          addAttr(tmpName, v);
+          tmpName = false;
+          i = j;
+          lastPos = i + 1;
+          continue;
+        }
+      }
+    }
+    if (/\s|\n|\t/.test(c)) {
+      html = html.replace(/\s|\n|\t/g, " ");
+      if (tmpName === false) {
+        j = findNextEqual(html, i);
+        if (j === -1) {
+          v = _.trim(html.slice(lastPos, i));
+          addAttr(v);
+          tmpName = false;
+          lastPos = i + 1;
+          continue;
+        } else {
+          i = j - 1;
+          continue;
+        }
+      } else {
+        j = findBeforeEqual(html, i - 1);
+        if (j === -1) {
+          v = _.trim(html.slice(lastPos, i));
+          v = stripQuoteWrap(v);
+          addAttr(tmpName, v);
+          tmpName = false;
+          lastPos = i + 1;
+          continue;
+        } else {
+          continue;
+        }
+      }
+    }
+  }
+
+  if (lastPos < html.length) {
+    if (tmpName === false) {
+      addAttr(html.slice(lastPos));
+    } else {
+      addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
+    }
+  }
+
+  return _.trim(retAttrs.join(" "));
+}
+
+function findNextEqual(str, i) {
+  for (; i < str.length; i++) {
+    var c = str[i];
+    if (c === " ") continue;
+    if (c === "=") return i;
+    return -1;
+  }
+}
+
+function findBeforeEqual(str, i) {
+  for (; i > 0; i--) {
+    var c = str[i];
+    if (c === " ") continue;
+    if (c === "=") return i;
+    return -1;
+  }
+}
+
+function isQuoteWrapString(text) {
+  if (
+    (text[0] === '"' && text[text.length - 1] === '"') ||
+    (text[0] === "'" && text[text.length - 1] === "'")
+  ) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+function stripQuoteWrap(text) {
+  if (isQuoteWrapString(text)) {
+    return text.substr(1, text.length - 2);
+  } else {
+    return text;
+  }
+}
+
+exports.parseTag = parseTag;
+exports.parseAttr = parseAttr;
+
+},{"./util":4}],4:[function(require,module,exports){
+module.exports = {
+  indexOf: function(arr, item) {
+    var i, j;
+    if (Array.prototype.indexOf) {
+      return arr.indexOf(item);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      if (arr[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  },
+  forEach: function(arr, fn, scope) {
+    var i, j;
+    if (Array.prototype.forEach) {
+      return arr.forEach(fn, scope);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      fn.call(scope, arr[i], i, arr);
+    }
+  },
+  trim: function(str) {
+    if (String.prototype.trim) {
+      return str.trim();
+    }
+    return str.replace(/(^\s*)|(\s*$)/g, "");
+  },
+  spaceIndex: function(str) {
+    var reg = /\s|\n|\t/;
+    var match = reg.exec(str);
+    return match ? match.index : -1;
+  }
+};
+
+},{}],5:[function(require,module,exports){
+/**
+ * filter xss
+ *
+ * @author Zongmin Lei
+ */
+
+var FilterCSS = require("cssfilter").FilterCSS;
+var DEFAULT = require("./default");
+var parser = require("./parser");
+var parseTag = parser.parseTag;
+var parseAttr = parser.parseAttr;
+var _ = require("./util");
+
+/**
+ * returns `true` if the input value is `undefined` or `null`
+ *
+ * @param {Object} obj
+ * @return {Boolean}
+ */
+function isNull(obj) {
+  return obj === undefined || obj === null;
+}
+
+/**
+ * get attributes for a tag
+ *
+ * @param {String} html
+ * @return {Object}
+ *   - {String} html
+ *   - {Boolean} closing
+ */
+function getAttrs(html) {
+  var i = _.spaceIndex(html);
+  if (i === -1) {
+    return {
+      html: "",
+      closing: html[html.length - 2] === "/"
+    };
+  }
+  html = _.trim(html.slice(i + 1, -1));
+  var isClosing = html[html.length - 1] === "/";
+  if (isClosing) html = _.trim(html.slice(0, -1));
+  return {
+    html: html,
+    closing: isClosing
+  };
+}
+
+/**
+ * shallow copy
+ *
+ * @param {Object} obj
+ * @return {Object}
+ */
+function shallowCopyObject(obj) {
+  var ret = {};
+  for (var i in obj) {
+    ret[i] = obj[i];
+  }
+  return ret;
+}
+
+/**
+ * FilterXSS class
+ *
+ * @param {Object} options
+ *        whiteList, onTag, onTagAttr, onIgnoreTag,
+ *        onIgnoreTagAttr, safeAttrValue, escapeHtml
+ *        stripIgnoreTagBody, allowCommentTag, stripBlankChar
+ *        css{whiteList, onAttr, onIgnoreAttr} `css=false` means don't use `cssfilter`
+ */
+function FilterXSS(options) {
+  options = shallowCopyObject(options || {});
+
+  if (options.stripIgnoreTag) {
+    if (options.onIgnoreTag) {
+      console.error(
+        'Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time'
+      );
+    }
+    options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
+  }
+
+  options.whiteList = options.whiteList || DEFAULT.whiteList;
+  options.onTag = options.onTag || DEFAULT.onTag;
+  options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
+  options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
+  options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
+  options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
+  options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
+  this.options = options;
+
+  if (options.css === false) {
+    this.cssFilter = false;
+  } else {
+    options.css = options.css || {};
+    this.cssFilter = new FilterCSS(options.css);
+  }
+}
+
+/**
+ * start process and returns result
+ *
+ * @param {String} html
+ * @return {String}
+ */
+FilterXSS.prototype.process = function(html) {
+  // compatible with the input
+  html = html || "";
+  html = html.toString();
+  if (!html) return "";
+
+  var me = this;
+  var options = me.options;
+  var whiteList = options.whiteList;
+  var onTag = options.onTag;
+  var onIgnoreTag = options.onIgnoreTag;
+  var onTagAttr = options.onTagAttr;
+  var onIgnoreTagAttr = options.onIgnoreTagAttr;
+  var safeAttrValue = options.safeAttrValue;
+  var escapeHtml = options.escapeHtml;
+  var cssFilter = me.cssFilter;
+
+  // remove invisible characters
+  if (options.stripBlankChar) {
+    html = DEFAULT.stripBlankChar(html);
+  }
+
+  // remove html comments
+  if (!options.allowCommentTag) {
+    html = DEFAULT.stripCommentTag(html);
+  }
+
+  // if enable stripIgnoreTagBody
+  var stripIgnoreTagBody = false;
+  if (options.stripIgnoreTagBody) {
+    var stripIgnoreTagBody = DEFAULT.StripTagBody(
+      options.stripIgnoreTagBody,
+      onIgnoreTag
+    );
+    onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
+  }
+
+  var retHtml = parseTag(
+    html,
+    function(sourcePosition, position, tag, html, isClosing) {
+      var info = {
+        sourcePosition: sourcePosition,
+        position: position,
+        isClosing: isClosing,
+        isWhite: whiteList.hasOwnProperty(tag)
+      };
+
+      // call `onTag()`
+      var ret = onTag(tag, html, info);
+      if (!isNull(ret)) return ret;
+
+      if (info.isWhite) {
+        if (info.isClosing) {
+          return "";
+        }
+
+        var attrs = getAttrs(html);
+        var whiteAttrList = whiteList[tag];
+        var attrsHtml = parseAttr(attrs.html, function(name, value) {
+          // call `onTagAttr()`
+          var isWhiteAttr = _.indexOf(whiteAttrList, name) !== -1;
+          var ret = onTagAttr(tag, name, value, isWhiteAttr);
+          if (!isNull(ret)) return ret;
+
+          if (isWhiteAttr) {
+            // call `safeAttrValue()`
+            value = safeAttrValue(tag, name, value, cssFilter);
+            if (value) {
+              return name + '="' + value + '"';
+            } else {
+              return name;
+            }
+          } else {
+            // call `onIgnoreTagAttr()`
+            var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
+            if (!isNull(ret)) return ret;
+            return;
+          }
+        });
+
+        // build new tag html
+        var html = "<" + tag;
+        if (attrsHtml) html += " " + attrsHtml;
+        if (attrs.closing) html += " /";
+        html += ">";
+        return html;
+      } else {
+        // call `onIgnoreTag()`
+        var ret = onIgnoreTag(tag, html, info);
+        if (!isNull(ret)) return ret;
+        return escapeHtml(html);
+      }
+    },
+    escapeHtml
+  );
+
+  // if enable stripIgnoreTagBody
+  if (stripIgnoreTagBody) {
+    retHtml = stripIgnoreTagBody.remove(retHtml);
+  }
+
+  return retHtml;
+};
+
+module.exports = FilterXSS;
+
+},{"./default":1,"./parser":3,"./util":4,"cssfilter":8}],6:[function(require,module,exports){
+/**
+ * cssfilter
+ *
+ * @author 老雷
+ */
+
+var DEFAULT = require('./default');
+var parseStyle = require('./parser');
+var _ = require('./util');
+
+
+/**
+ * 返回值是否为空
+ *
+ * @param {Object} obj
+ * @return {Boolean}
+ */
+function isNull (obj) {
+  return (obj === undefined || obj === null);
+}
+
+/**
+ * 浅拷贝对象
+ *
+ * @param {Object} obj
+ * @return {Object}
+ */
+function shallowCopyObject (obj) {
+  var ret = {};
+  for (var i in obj) {
+    ret[i] = obj[i];
+  }
+  return ret;
+}
+
+/**
+ * 创建CSS过滤器
+ *
+ * @param {Object} options
+ *   - {Object} whiteList
+ *   - {Function} onAttr
+ *   - {Function} onIgnoreAttr
+ *   - {Function} safeAttrValue
+ */
+function FilterCSS (options) {
+  options = shallowCopyObject(options || {});
+  options.whiteList = options.whiteList || DEFAULT.whiteList;
+  options.onAttr = options.onAttr || DEFAULT.onAttr;
+  options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr;
+  options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
+  this.options = options;
+}
+
+FilterCSS.prototype.process = function (css) {
+  // 兼容各种奇葩输入
+  css = css || '';
+  css = css.toString();
+  if (!css) return '';
+
+  var me = this;
+  var options = me.options;
+  var whiteList = options.whiteList;
+  var onAttr = options.onAttr;
+  var onIgnoreAttr = options.onIgnoreAttr;
+  var safeAttrValue = options.safeAttrValue;
+
+  var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {
+
+    var check = whiteList[name];
+    var isWhite = false;
+    if (check === true) isWhite = check;
+    else if (typeof check === 'function') isWhite = check(value);
+    else if (check instanceof RegExp) isWhite = check.test(value);
+    if (isWhite !== true) isWhite = false;
+
+    // 如果过滤后 value 为空则直接忽略
+    value = safeAttrValue(name, value);
+    if (!value) return;
+
+    var opts = {
+      position: position,
+      sourcePosition: sourcePosition,
+      source: source,
+      isWhite: isWhite
+    };
+
+    if (isWhite) {
+
+      var ret = onAttr(name, value, opts);
+      if (isNull(ret)) {
+        return name + ':' + value;
+      } else {
+        return ret;
+      }
+
+    } else {
+
+      var ret = onIgnoreAttr(name, value, opts);
+      if (!isNull(ret)) {
+        return ret;
+      }
+
+    }
+  });
+
+  return retCSS;
+};
+
+
+module.exports = FilterCSS;
+
+},{"./default":7,"./parser":9,"./util":10}],7:[function(require,module,exports){
+/**
+ * cssfilter
+ *
+ * @author 老雷
+ */
+
+function getDefaultWhiteList () {
+  // 白名单值说明：
+  // true: 允许该属性
+  // Function: function (val) { } 返回true表示允许该属性，其他值均表示不允许
+  // RegExp: regexp.test(val) 返回true表示允许该属性，其他值均表示不允许
+  // 除上面列出的值外均表示不允许
+  var whiteList = {};
+
+  whiteList['align-content'] = false; // default: auto
+  whiteList['align-items'] = false; // default: auto
+  whiteList['align-self'] = false; // default: auto
+  whiteList['alignment-adjust'] = false; // default: auto
+  whiteList['alignment-baseline'] = false; // default: baseline
+  whiteList['all'] = false; // default: depending on individual properties
+  whiteList['anchor-point'] = false; // default: none
+  whiteList['animation'] = false; // default: depending on individual properties
+  whiteList['animation-delay'] = false; // default: 0
+  whiteList['animation-direction'] = false; // default: normal
+  whiteList['animation-duration'] = false; // default: 0
+  whiteList['animation-fill-mode'] = false; // default: none
+  whiteList['animation-iteration-count'] = false; // default: 1
+  whiteList['animation-name'] = false; // default: none
+  whiteList['animation-play-state'] = false; // default: running
+  whiteList['animation-timing-function'] = false; // default: ease
+  whiteList['azimuth'] = false; // default: center
+  whiteList['backface-visibility'] = false; // default: visible
+  whiteList['background'] = true; // default: depending on individual properties
+  whiteList['background-attachment'] = true; // default: scroll
+  whiteList['background-clip'] = true; // default: border-box
+  whiteList['background-color'] = true; // default: transparent
+  whiteList['background-image'] = true; // default: none
+  whiteList['background-origin'] = true; // default: padding-box
+  whiteList['background-position'] = true; // default: 0% 0%
+  whiteList['background-repeat'] = true; // default: repeat
+  whiteList['background-size'] = true; // default: auto
+  whiteList['baseline-shift'] = false; // default: baseline
+  whiteList['binding'] = false; // default: none
+  whiteList['bleed'] = false; // default: 6pt
+  whiteList['bookmark-label'] = false; // default: content()
+  whiteList['bookmark-level'] = false; // default: none
+  whiteList['bookmark-state'] = false; // default: open
+  whiteList['border'] = true; // default: depending on individual properties
+  whiteList['border-bottom'] = true; // default: depending on individual properties
+  whiteList['border-bottom-color'] = true; // default: current color
+  whiteList['border-bottom-left-radius'] = true; // default: 0
+  whiteList['border-bottom-right-radius'] = true; // default: 0
+  whiteList['border-bottom-style'] = true; // default: none
+  whiteList['border-bottom-width'] = true; // default: medium
+  whiteList['border-collapse'] = true; // default: separate
+  whiteList['border-color'] = true; // default: depending on individual properties
+  whiteList['border-image'] = true; // default: none
+  whiteList['border-image-outset'] = true; // default: 0
+  whiteList['border-image-repeat'] = true; // default: stretch
+  whiteList['border-image-slice'] = true; // default: 100%
+  whiteList['border-image-source'] = true; // default: none
+  whiteList['border-image-width'] = true; // default: 1
+  whiteList['border-left'] = true; // default: depending on individual properties
+  whiteList['border-left-color'] = true; // default: current color
+  whiteList['border-left-style'] = true; // default: none
+  whiteList['border-left-width'] = true; // default: medium
+  whiteList['border-radius'] = true; // default: 0
+  whiteList['border-right'] = true; // default: depending on individual properties
+  whiteList['border-right-color'] = true; // default: current color
+  whiteList['border-right-style'] = true; // default: none
+  whiteList['border-right-width'] = true; // default: medium
+  whiteList['border-spacing'] = true; // default: 0
+  whiteList['border-style'] = true; // default: depending on individual properties
+  whiteList['border-top'] = true; // default: depending on individual properties
+  whiteList['border-top-color'] = true; // default: current color
+  whiteList['border-top-left-radius'] = true; // default: 0
+  whiteList['border-top-right-radius'] = true; // default: 0
+  whiteList['border-top-style'] = true; // default: none
+  whiteList['border-top-width'] = true; // default: medium
+  whiteList['border-width'] = true; // default: depending on individual properties
+  whiteList['bottom'] = false; // default: auto
+  whiteList['box-decoration-break'] = true; // default: slice
+  whiteList['box-shadow'] = true; // default: none
+  whiteList['box-sizing'] = true; // default: content-box
+  whiteList['box-snap'] = true; // default: none
+  whiteList['box-suppress'] = true; // default: show
+  whiteList['break-after'] = true; // default: auto
+  whiteList['break-before'] = true; // default: auto
+  whiteList['break-inside'] = true; // default: auto
+  whiteList['caption-side'] = false; // default: top
+  whiteList['chains'] = false; // default: none
+  whiteList['clear'] = true; // default: none
+  whiteList['clip'] = false; // default: auto
+  whiteList['clip-path'] = false; // default: none
+  whiteList['clip-rule'] = false; // default: nonzero
+  whiteList['color'] = true; // default: implementation dependent
+  whiteList['color-interpolation-filters'] = true; // default: auto
+  whiteList['column-count'] = false; // default: auto
+  whiteList['column-fill'] = false; // default: balance
+  whiteList['column-gap'] = false; // default: normal
+  whiteList['column-rule'] = false; // default: depending on individual properties
+  whiteList['column-rule-color'] = false; // default: current color
+  whiteList['column-rule-style'] = false; // default: medium
+  whiteList['column-rule-width'] = false; // default: medium
+  whiteList['column-span'] = false; // default: none
+  whiteList['column-width'] = false; // default: auto
+  whiteList['columns'] = false; // default: depending on individual properties
+  whiteList['contain'] = false; // default: none
+  whiteList['content'] = false; // default: normal
+  whiteList['counter-increment'] = false; // default: none
+  whiteList['counter-reset'] = false; // default: none
+  whiteList['counter-set'] = false; // default: none
+  whiteList['crop'] = false; // default: auto
+  whiteList['cue'] = false; // default: depending on individual properties
+  whiteList['cue-after'] = false; // default: none
+  whiteList['cue-before'] = false; // default: none
+  whiteList['cursor'] = false; // default: auto
+  whiteList['direction'] = false; // default: ltr
+  whiteList['display'] = true; // default: depending on individual properties
+  whiteList['display-inside'] = true; // default: auto
+  whiteList['display-list'] = true; // default: none
+  whiteList['display-outside'] = true; // default: inline-level
+  whiteList['dominant-baseline'] = false; // default: auto
+  whiteList['elevation'] = false; // default: level
+  whiteList['empty-cells'] = false; // default: show
+  whiteList['filter'] = false; // default: none
+  whiteList['flex'] = false; // default: depending on individual properties
+  whiteList['flex-basis'] = false; // default: auto
+  whiteList['flex-direction'] = false; // default: row
+  whiteList['flex-flow'] = false; // default: depending on individual properties
+  whiteList['flex-grow'] = false; // default: 0
+  whiteList['flex-shrink'] = false; // default: 1
+  whiteList['flex-wrap'] = false; // default: nowrap
+  whiteList['float'] = false; // default: none
+  whiteList['float-offset'] = false; // default: 0 0
+  whiteList['flood-color'] = false; // default: black
+  whiteList['flood-opacity'] = false; // default: 1
+  whiteList['flow-from'] = false; // default: none
+  whiteList['flow-into'] = false; // default: none
+  whiteList['font'] = true; // default: depending on individual properties
+  whiteList['font-family'] = true; // default: implementation dependent
+  whiteList['font-feature-settings'] = true; // default: normal
+  whiteList['font-kerning'] = true; // default: auto
+  whiteList['font-language-override'] = true; // default: normal
+  whiteList['font-size'] = true; // default: medium
+  whiteList['font-size-adjust'] = true; // default: none
+  whiteList['font-stretch'] = true; // default: normal
+  whiteList['font-style'] = true; // default: normal
+  whiteList['font-synthesis'] = true; // default: weight style
+  whiteList['font-variant'] = true; // default: normal
+  whiteList['font-variant-alternates'] = true; // default: normal
+  whiteList['font-variant-caps'] = true; // default: normal
+  whiteList['font-variant-east-asian'] = true; // default: normal
+  whiteList['font-variant-ligatures'] = true; // default: normal
+  whiteList['font-variant-numeric'] = true; // default: normal
+  whiteList['font-variant-position'] = true; // default: normal
+  whiteList['font-weight'] = true; // default: normal
+  whiteList['grid'] = false; // default: depending on individual properties
+  whiteList['grid-area'] = false; // default: depending on individual properties
+  whiteList['grid-auto-columns'] = false; // default: auto
+  whiteList['grid-auto-flow'] = false; // default: none
+  whiteList['grid-auto-rows'] = false; // default: auto
+  whiteList['grid-column'] = false; // default: depending on individual properties
+  whiteList['grid-column-end'] = false; // default: auto
+  whiteList['grid-column-start'] = false; // default: auto
+  whiteList['grid-row'] = false; // default: depending on individual properties
+  whiteList['grid-row-end'] = false; // default: auto
+  whiteList['grid-row-start'] = false; // default: auto
+  whiteList['grid-template'] = false; // default: depending on individual properties
+  whiteList['grid-template-areas'] = false; // default: none
+  whiteList['grid-template-columns'] = false; // default: none
+  whiteList['grid-template-rows'] = false; // default: none
+  whiteList['hanging-punctuation'] = false; // default: none
+  whiteList['height'] = true; // default: auto
+  whiteList['hyphens'] = false; // default: manual
+  whiteList['icon'] = false; // default: auto
+  whiteList['image-orientation'] = false; // default: auto
+  whiteList['image-resolution'] = false; // default: normal
+  whiteList['ime-mode'] = false; // default: auto
+  whiteList['initial-letters'] = false; // default: normal
+  whiteList['inline-box-align'] = false; // default: last
+  whiteList['justify-content'] = false; // default: auto
+  whiteList['justify-items'] = false; // default: auto
+  whiteList['justify-self'] = false; // default: auto
+  whiteList['left'] = false; // default: auto
+  whiteList['letter-spacing'] = true; // default: normal
+  whiteList['lighting-color'] = true; // default: white
+  whiteList['line-box-contain'] = false; // default: block inline replaced
+  whiteList['line-break'] = false; // default: auto
+  whiteList['line-grid'] = false; // default: match-parent
+  whiteList['line-height'] = false; // default: normal
+  whiteList['line-snap'] = false; // default: none
+  whiteList['line-stacking'] = false; // default: depending on individual properties
+  whiteList['line-stacking-ruby'] = false; // default: exclude-ruby
+  whiteList['line-stacking-shift'] = false; // default: consider-shifts
+  whiteList['line-stacking-strategy'] = false; // default: inline-line-height
+  whiteList['list-style'] = true; // default: depending on individual properties
+  whiteList['list-style-image'] = true; // default: none
+  whiteList['list-style-position'] = true; // default: outside
+  whiteList['list-style-type'] = true; // default: disc
+  whiteList['margin'] = true; // default: depending on individual properties
+  whiteList['margin-bottom'] = true; // default: 0
+  whiteList['margin-left'] = true; // default: 0
+  whiteList['margin-right'] = true; // default: 0
+  whiteList['margin-top'] = true; // default: 0
+  whiteList['marker-offset'] = false; // default: auto
+  whiteList['marker-side'] = false; // default: list-item
+  whiteList['marks'] = false; // default: none
+  whiteList['mask'] = false; // default: border-box
+  whiteList['mask-box'] = false; // default: see individual properties
+  whiteList['mask-box-outset'] = false; // default: 0
+  whiteList['mask-box-repeat'] = false; // default: stretch
+  whiteList['mask-box-slice'] = false; // default: 0 fill
+  whiteList['mask-box-source'] = false; // default: none
+  whiteList['mask-box-width'] = false; // default: auto
+  whiteList['mask-clip'] = false; // default: border-box
+  whiteList['mask-image'] = false; // default: none
+  whiteList['mask-origin'] = false; // default: border-box
+  whiteList['mask-position'] = false; // default: center
+  whiteList['mask-repeat'] = false; // default: no-repeat
+  whiteList['mask-size'] = false; // default: border-box
+  whiteList['mask-source-type'] = false; // default: auto
+  whiteList['mask-type'] = false; // default: luminance
+  whiteList['max-height'] = true; // default: none
+  whiteList['max-lines'] = false; // default: none
+  whiteList['max-width'] = true; // default: none
+  whiteList['min-height'] = true; // default: 0
+  whiteList['min-width'] = true; // default: 0
+  whiteList['move-to'] = false; // default: normal
+  whiteList['nav-down'] = false; // default: auto
+  whiteList['nav-index'] = false; // default: auto
+  whiteList['nav-left'] = false; // default: auto
+  whiteList['nav-right'] = false; // default: auto
+  whiteList['nav-up'] = false; // default: auto
+  whiteList['object-fit'] = false; // default: fill
+  whiteList['object-position'] = false; // default: 50% 50%
+  whiteList['opacity'] = false; // default: 1
+  whiteList['order'] = false; // default: 0
+  whiteList['orphans'] = false; // default: 2
+  whiteList['outline'] = false; // default: depending on individual properties
+  whiteList['outline-color'] = false; // default: invert
+  whiteList['outline-offset'] = false; // default: 0
+  whiteList['outline-style'] = false; // default: none
+  whiteList['outline-width'] = false; // default: medium
+  whiteList['overflow'] = false; // default: depending on individual properties
+  whiteList['overflow-wrap'] = false; // default: normal
+  whiteList['overflow-x'] = false; // default: visible
+  whiteList['overflow-y'] = false; // default: visible
+  whiteList['padding'] = true; // default: depending on individual properties
+  whiteList['padding-bottom'] = true; // default: 0
+  whiteList['padding-left'] = true; // default: 0
+  whiteList['padding-right'] = true; // default: 0
+  whiteList['padding-top'] = true; // default: 0
+  whiteList['page'] = false; // default: auto
+  whiteList['page-break-after'] = false; // default: auto
+  whiteList['page-break-before'] = false; // default: auto
+  whiteList['page-break-inside'] = false; // default: auto
+  whiteList['page-policy'] = false; // default: start
+  whiteList['pause'] = false; // default: implementation dependent
+  whiteList['pause-after'] = false; // default: implementation dependent
+  whiteList['pause-before'] = false; // default: implementation dependent
+  whiteList['perspective'] = false; // default: none
+  whiteList['perspective-origin'] = false; // default: 50% 50%
+  whiteList['pitch'] = false; // default: medium
+  whiteList['pitch-range'] = false; // default: 50
+  whiteList['play-during'] = false; // default: auto
+  whiteList['position'] = false; // default: static
+  whiteList['presentation-level'] = false; // default: 0
+  whiteList['quotes'] = false; // default: text
+  whiteList['region-fragment'] = false; // default: auto
+  whiteList['resize'] = false; // default: none
+  whiteList['rest'] = false; // default: depending on individual properties
+  whiteList['rest-after'] = false; // default: none
+  whiteList['rest-before'] = false; // default: none
+  whiteList['richness'] = false; // default: 50
+  whiteList['right'] = false; // default: auto
+  whiteList['rotation'] = false; // default: 0
+  whiteList['rotation-point'] = false; // default: 50% 50%
+  whiteList['ruby-align'] = false; // default: auto
+  whiteList['ruby-merge'] = false; // default: separate
+  whiteList['ruby-position'] = false; // default: before
+  whiteList['shape-image-threshold'] = false; // default: 0.0
+  whiteList['shape-outside'] = false; // default: none
+  whiteList['shape-margin'] = false; // default: 0
+  whiteList['size'] = false; // default: auto
+  whiteList['speak'] = false; // default: auto
+  whiteList['speak-as'] = false; // default: normal
+  whiteList['speak-header'] = false; // default: once
+  whiteList['speak-numeral'] = false; // default: continuous
+  whiteList['speak-punctuation'] = false; // default: none
+  whiteList['speech-rate'] = false; // default: medium
+  whiteList['stress'] = false; // default: 50
+  whiteList['string-set'] = false; // default: none
+  whiteList['tab-size'] = false; // default: 8
+  whiteList['table-layout'] = false; // default: auto
+  whiteList['text-align'] = true; // default: start
+  whiteList['text-align-last'] = true; // default: auto
+  whiteList['text-combine-upright'] = true; // default: none
+  whiteList['text-decoration'] = true; // default: none
+  whiteList['text-decoration-color'] = true; // default: currentColor
+  whiteList['text-decoration-line'] = true; // default: none
+  whiteList['text-decoration-skip'] = true; // default: objects
+  whiteList['text-decoration-style'] = true; // default: solid
+  whiteList['text-emphasis'] = true; // default: depending on individual properties
+  whiteList['text-emphasis-color'] = true; // default: currentColor
+  whiteList['text-emphasis-position'] = true; // default: over right
+  whiteList['text-emphasis-style'] = true; // default: none
+  whiteList['text-height'] = true; // default: auto
+  whiteList['text-indent'] = true; // default: 0
+  whiteList['text-justify'] = true; // default: auto
+  whiteList['text-orientation'] = true; // default: mixed
+  whiteList['text-overflow'] = true; // default: clip
+  whiteList['text-shadow'] = true; // default: none
+  whiteList['text-space-collapse'] = true; // default: collapse
+  whiteList['text-transform'] = true; // default: none
+  whiteList['text-underline-position'] = true; // default: auto
+  whiteList['text-wrap'] = true; // default: normal
+  whiteList['top'] = false; // default: auto
+  whiteList['transform'] = false; // default: none
+  whiteList['transform-origin'] = false; // default: 50% 50% 0
+  whiteList['transform-style'] = false; // default: flat
+  whiteList['transition'] = false; // default: depending on individual properties
+  whiteList['transition-delay'] = false; // default: 0s
+  whiteList['transition-duration'] = false; // default: 0s
+  whiteList['transition-property'] = false; // default: all
+  whiteList['transition-timing-function'] = false; // default: ease
+  whiteList['unicode-bidi'] = false; // default: normal
+  whiteList['vertical-align'] = false; // default: baseline
+  whiteList['visibility'] = false; // default: visible
+  whiteList['voice-balance'] = false; // default: center
+  whiteList['voice-duration'] = false; // default: auto
+  whiteList['voice-family'] = false; // default: implementation dependent
+  whiteList['voice-pitch'] = false; // default: medium
+  whiteList['voice-range'] = false; // default: medium
+  whiteList['voice-rate'] = false; // default: normal
+  whiteList['voice-stress'] = false; // default: normal
+  whiteList['voice-volume'] = false; // default: medium
+  whiteList['volume'] = false; // default: medium
+  whiteList['white-space'] = false; // default: normal
+  whiteList['widows'] = false; // default: 2
+  whiteList['width'] = true; // default: auto
+  whiteList['will-change'] = false; // default: auto
+  whiteList['word-break'] = true; // default: normal
+  whiteList['word-spacing'] = true; // default: normal
+  whiteList['word-wrap'] = true; // default: normal
+  whiteList['wrap-flow'] = false; // default: auto
+  whiteList['wrap-through'] = false; // default: wrap
+  whiteList['writing-mode'] = false; // default: horizontal-tb
+  whiteList['z-index'] = false; // default: auto
+
+  return whiteList;
+}
+
+
+/**
+ * 匹配到白名单上的一个属性时
+ *
+ * @param {String} name
+ * @param {String} value
+ * @param {Object} options
+ * @return {String}
+ */
+function onAttr (name, value, options) {
+  // do nothing
+}
+
+/**
+ * 匹配到不在白名单上的一个属性时
+ *
+ * @param {String} name
+ * @param {String} value
+ * @param {Object} options
+ * @return {String}
+ */
+function onIgnoreAttr (name, value, options) {
+  // do nothing
+}
+
+var REGEXP_URL_JAVASCRIPT = /javascript\s*\:/img;
+
+/**
+ * 过滤属性值
+ *
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function safeAttrValue(name, value) {
+  if (REGEXP_URL_JAVASCRIPT.test(value)) return '';
+  return value;
+}
+
+
+exports.whiteList = getDefaultWhiteList();
+exports.getDefaultWhiteList = getDefaultWhiteList;
+exports.onAttr = onAttr;
+exports.onIgnoreAttr = onIgnoreAttr;
+exports.safeAttrValue = safeAttrValue;
+
+},{}],8:[function(require,module,exports){
+/**
+ * cssfilter
+ *
+ * @author 老雷
+ */
+
+var DEFAULT = require('./default');
+var FilterCSS = require('./css');
+
+
+/**
+ * XSS过滤
+ *
+ * @param {String} css 要过滤的CSS代码
+ * @param {Object} options 选项：whiteList, onAttr, onIgnoreAttr
+ * @return {String}
+ */
+function filterCSS (html, options) {
+  var xss = new FilterCSS(options);
+  return xss.process(html);
+}
+
+
+// 输出
+exports = module.exports = filterCSS;
+exports.FilterCSS = FilterCSS;
+for (var i in DEFAULT) exports[i] = DEFAULT[i];
+
+// 在浏览器端使用
+if (typeof window !== 'undefined') {
+  window.filterCSS = module.exports;
+}
+
+},{"./css":6,"./default":7}],9:[function(require,module,exports){
+/**
+ * cssfilter
+ *
+ * @author 老雷
+ */
+
+var _ = require('./util');
+
+
+/**
+ * 解析style
+ *
+ * @param {String} css
+ * @param {Function} onAttr 处理属性的函数
+ *   参数格式： function (sourcePosition, position, name, value, source)
+ * @return {String}
+ */
+function parseStyle (css, onAttr) {
+  css = _.trimRight(css);
+  if (css[css.length - 1] !== ';') css += ';';
+  var cssLength = css.length;
+  var isParenthesisOpen = false;
+  var lastPos = 0;
+  var i = 0;
+  var retCSS = '';
+
+  function addNewAttr () {
+    // 如果没有正常的闭合圆括号，则直接忽略当前属性
+    if (!isParenthesisOpen) {
+      var source = _.trim(css.slice(lastPos, i));
+      var j = source.indexOf(':');
+      if (j !== -1) {
+        var name = _.trim(source.slice(0, j));
+        var value = _.trim(source.slice(j + 1));
+        // 必须有属性名称
+        if (name) {
+          var ret = onAttr(lastPos, retCSS.length, name, value, source);
+          if (ret) retCSS += ret + '; ';
+        }
+      }
+    }
+    lastPos = i + 1;
+  }
+
+  for (; i < cssLength; i++) {
+    var c = css[i];
+    if (c === '/' && css[i + 1] === '*') {
+      // 备注开始
+      var j = css.indexOf('*/', i + 2);
+      // 如果没有正常的备注结束，则后面的部分全部跳过
+      if (j === -1) break;
+      // 直接将当前位置调到备注结尾，并且初始化状态
+      i = j + 1;
+      lastPos = i + 1;
+      isParenthesisOpen = false;
+    } else if (c === '(') {
+      isParenthesisOpen = true;
+    } else if (c === ')') {
+      isParenthesisOpen = false;
+    } else if (c === ';') {
+      if (isParenthesisOpen) {
+        // 在圆括号里面，忽略
+      } else {
+        addNewAttr();
+      }
+    } else if (c === '\n') {
+      addNewAttr();
+    }
+  }
+
+  return _.trim(retCSS);
+}
+
+module.exports = parseStyle;
+
+},{"./util":10}],10:[function(require,module,exports){
+module.exports = {
+  indexOf: function (arr, item) {
+    var i, j;
+    if (Array.prototype.indexOf) {
+      return arr.indexOf(item);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      if (arr[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  },
+  forEach: function (arr, fn, scope) {
+    var i, j;
+    if (Array.prototype.forEach) {
+      return arr.forEach(fn, scope);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      fn.call(scope, arr[i], i, arr);
+    }
+  },
+  trim: function (str) {
+    if (String.prototype.trim) {
+      return str.trim();
+    }
+    return str.replace(/(^\s*)|(\s*$)/g, '');
+  },
+  trimRight: function (str) {
+    if (String.prototype.trimRight) {
+      return str.trimRight();
+    }
+    return str.replace(/(\s*$)/g, '');
+  }
+};
+
+},{}]},{},[2]);
diff --git a/node_modules/xss/dist/xss.min.js b/node_modules/xss/dist/xss.min.js
new file mode 100644
index 0000000..b2c3878
--- /dev/null
+++ b/node_modules/xss/dist/xss.min.js
@@ -0,0 +1 @@
+(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o/g;var REGEXP_QUOTE=/"/g;var REGEXP_QUOTE_2=/"/g;var REGEXP_ATTR_VALUE_1=/&#([a-zA-Z0-9]*);?/gim;var REGEXP_ATTR_VALUE_COLON=/:?/gim;var REGEXP_ATTR_VALUE_NEWLINE=/&newline;?/gim;var REGEXP_DEFAULT_ON_TAG_ATTR_3=/\/\*|\*\//gm;var REGEXP_DEFAULT_ON_TAG_ATTR_4=/((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a)\:/gi;var REGEXP_DEFAULT_ON_TAG_ATTR_5=/^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;var REGEXP_DEFAULT_ON_TAG_ATTR_6=/^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;var REGEXP_DEFAULT_ON_TAG_ATTR_7=/e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;var REGEXP_DEFAULT_ON_TAG_ATTR_8=/u\s*r\s*l\s*\(.*/gi;function escapeQuote(str){return str.replace(REGEXP_QUOTE,""")}function unescapeQuote(str){return str.replace(REGEXP_QUOTE_2,'"')}function escapeHtmlEntities(str){return str.replace(REGEXP_ATTR_VALUE_1,function replaceUnicode(str,code){return code[0]==="x"||code[0]==="X"?String.fromCharCode(parseInt(code.substr(1),16)):String.fromCharCode(parseInt(code,10))})}function escapeDangerHtml5Entities(str){return str.replace(REGEXP_ATTR_VALUE_COLON,":").replace(REGEXP_ATTR_VALUE_NEWLINE," ")}function clearNonPrintableCharacter(str){var str2="";for(var i=0,len=str.length;i/g;function stripBlankChar(html){var chars=html.split("");chars=chars.filter(function(char){var c=char.charCodeAt(0);if(c===127)return false;if(c<=31){if(c===10||c===13)return true;return false}return true});return chars.join("")}exports.whiteList=getDefaultWhiteList();exports.getDefaultWhiteList=getDefaultWhiteList;exports.onTag=onTag;exports.onIgnoreTag=onIgnoreTag;exports.onTagAttr=onTagAttr;exports.onIgnoreTagAttr=onIgnoreTagAttr;exports.safeAttrValue=safeAttrValue;exports.escapeHtml=escapeHtml;exports.escapeQuote=escapeQuote;exports.unescapeQuote=unescapeQuote;exports.escapeHtmlEntities=escapeHtmlEntities;exports.escapeDangerHtml5Entities=escapeDangerHtml5Entities;exports.clearNonPrintableCharacter=clearNonPrintableCharacter;exports.friendlyAttrValue=friendlyAttrValue;exports.escapeAttrValue=escapeAttrValue;exports.onIgnoreTagStripAll=onIgnoreTagStripAll;exports.StripTagBody=StripTagBody;exports.stripCommentTag=stripCommentTag;exports.stripBlankChar=stripBlankChar;exports.cssFilter=defaultCSSFilter;exports.getDefaultCSSWhiteList=getDefaultCSSWhiteList},{"./util":4,cssfilter:8}],2:[function(require,module,exports){var DEFAULT=require("./default");var parser=require("./parser");var FilterXSS=require("./xss");function filterXSS(html,options){var xss=new FilterXSS(options);return xss.process(html)}exports=module.exports=filterXSS;exports.filterXSS=filterXSS;exports.FilterXSS=FilterXSS;for(var i in DEFAULT)exports[i]=DEFAULT[i];for(var i in parser)exports[i]=parser[i];if(typeof window!=="undefined"){window.filterXSS=module.exports}function isWorkerEnv(){return typeof self!=="undefined"&&typeof DedicatedWorkerGlobalScope!=="undefined"&&self instanceof DedicatedWorkerGlobalScope}if(isWorkerEnv()){self.filterXSS=module.exports}},{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){var _=require("./util");function getTagName(html){var i=_.spaceIndex(html);if(i===-1){var tagName=html.slice(1,-1)}else{var tagName=html.slice(1,i+1)}tagName=_.trim(tagName).toLowerCase();if(tagName.slice(0,1)==="/")tagName=tagName.slice(1);if(tagName.slice(-1)==="/")tagName=tagName.slice(0,-1);return tagName}function isClosing(html){return html.slice(0,2)===""){rethtml+=escapeHtml(html.slice(lastPos,tagStart));currentHtml=html.slice(tagStart,currentPos+1);currentTagName=getTagName(currentHtml);rethtml+=onTag(tagStart,rethtml.length,currentTagName,currentHtml,isClosing(currentHtml));lastPos=currentPos+1;tagStart=false;continue}if((c==='"'||c==="'")&&html.charAt(currentPos-1)==="="){quoteStart=c;continue}}else{if(c===quoteStart){quoteStart=false;continue}}}}if(lastPos0;i--){var c=str[i];if(c===" ")continue;if(c==="=")return i;return-1}}function isQuoteWrapString(text){if(text[0]==='"'&&text[text.length-1]==='"'||text[0]==="'"&&text[text.length-1]==="'"){return true}else{return false}}function stripQuoteWrap(text){if(isQuoteWrapString(text)){return text.substr(1,text.length-2)}else{return text}}exports.parseTag=parseTag;exports.parseAttr=parseAttr},{"./util":4}],4:[function(require,module,exports){module.exports={indexOf:function(arr,item){var i,j;if(Array.prototype.indexOf){return arr.indexOf(item)}for(i=0,j=arr.length;i"}var attrs=getAttrs(html);var whiteAttrList=whiteList[tag];var attrsHtml=parseAttr(attrs.html,function(name,value){var isWhiteAttr=_.indexOf(whiteAttrList,name)!==-1;var ret=onTagAttr(tag,name,value,isWhiteAttr);if(!isNull(ret))return ret;if(isWhiteAttr){value=safeAttrValue(tag,name,value,cssFilter);if(value){return name+'="'+value+'"'}else{return name}}else{var ret=onIgnoreTagAttr(tag,name,value,isWhiteAttr);if(!isNull(ret))return ret;return}});var html="<"+tag;if(attrsHtml)html+=" "+attrsHtml;if(attrs.closing)html+=" /";html+=">";return html}else{var ret=onIgnoreTag(tag,html,info);if(!isNull(ret))return ret;return escapeHtml(html)}},escapeHtml);if(stripIgnoreTagBody){retHtml=stripIgnoreTagBody.remove(retHtml)}return retHtml};module.exports=FilterXSS},{"./default":1,"./parser":3,"./util":4,cssfilter:8}],6:[function(require,module,exports){var DEFAULT=require("./default");var parseStyle=require("./parser");var _=require("./util");function isNull(obj){return obj===undefined||obj===null}function shallowCopyObject(obj){var ret={};for(var i in obj){ret[i]=obj[i]}return ret}function FilterCSS(options){options=shallowCopyObject(options||{});options.whiteList=options.whiteList||DEFAULT.whiteList;options.onAttr=options.onAttr||DEFAULT.onAttr;options.onIgnoreAttr=options.onIgnoreAttr||DEFAULT.onIgnoreAttr;options.safeAttrValue=options.safeAttrValue||DEFAULT.safeAttrValue;this.options=options}FilterCSS.prototype.process=function(css){css=css||"";css=css.toString();if(!css)return"";var me=this;var options=me.options;var whiteList=options.whiteList;var onAttr=options.onAttr;var onIgnoreAttr=options.onIgnoreAttr;var safeAttrValue=options.safeAttrValue;var retCSS=parseStyle(css,function(sourcePosition,position,name,value,source){var check=whiteList[name];var isWhite=false;if(check===true)isWhite=check;else if(typeof check==="function")isWhite=check(value);else if(check instanceof RegExp)isWhite=check.test(value);if(isWhite!==true)isWhite=false;value=safeAttrValue(name,value);if(!value)return;var opts={position:position,sourcePosition:sourcePosition,source:source,isWhite:isWhite};if(isWhite){var ret=onAttr(name,value,opts);if(isNull(ret)){return name+":"+value}else{return ret}}else{var ret=onIgnoreAttr(name,value,opts);if(!isNull(ret)){return ret}}});return retCSS};module.exports=FilterCSS},{"./default":7,"./parser":9,"./util":10}],7:[function(require,module,exports){function getDefaultWhiteList(){var whiteList={};whiteList["align-content"]=false;whiteList["align-items"]=false;whiteList["align-self"]=false;whiteList["alignment-adjust"]=false;whiteList["alignment-baseline"]=false;whiteList["all"]=false;whiteList["anchor-point"]=false;whiteList["animation"]=false;whiteList["animation-delay"]=false;whiteList["animation-direction"]=false;whiteList["animation-duration"]=false;whiteList["animation-fill-mode"]=false;whiteList["animation-iteration-count"]=false;whiteList["animation-name"]=false;whiteList["animation-play-state"]=false;whiteList["animation-timing-function"]=false;whiteList["azimuth"]=false;whiteList["backface-visibility"]=false;whiteList["background"]=true;whiteList["background-attachment"]=true;whiteList["background-clip"]=true;whiteList["background-color"]=true;whiteList["background-image"]=true;whiteList["background-origin"]=true;whiteList["background-position"]=true;whiteList["background-repeat"]=true;whiteList["background-size"]=true;whiteList["baseline-shift"]=false;whiteList["binding"]=false;whiteList["bleed"]=false;whiteList["bookmark-label"]=false;whiteList["bookmark-level"]=false;whiteList["bookmark-state"]=false;whiteList["border"]=true;whiteList["border-bottom"]=true;whiteList["border-bottom-color"]=true;whiteList["border-bottom-left-radius"]=true;whiteList["border-bottom-right-radius"]=true;whiteList["border-bottom-style"]=true;whiteList["border-bottom-width"]=true;whiteList["border-collapse"]=true;whiteList["border-color"]=true;whiteList["border-image"]=true;whiteList["border-image-outset"]=true;whiteList["border-image-repeat"]=true;whiteList["border-image-slice"]=true;whiteList["border-image-source"]=true;whiteList["border-image-width"]=true;whiteList["border-left"]=true;whiteList["border-left-color"]=true;whiteList["border-left-style"]=true;whiteList["border-left-width"]=true;whiteList["border-radius"]=true;whiteList["border-right"]=true;whiteList["border-right-color"]=true;whiteList["border-right-style"]=true;whiteList["border-right-width"]=true;whiteList["border-spacing"]=true;whiteList["border-style"]=true;whiteList["border-top"]=true;whiteList["border-top-color"]=true;whiteList["border-top-left-radius"]=true;whiteList["border-top-right-radius"]=true;whiteList["border-top-style"]=true;whiteList["border-top-width"]=true;whiteList["border-width"]=true;whiteList["bottom"]=false;whiteList["box-decoration-break"]=true;whiteList["box-shadow"]=true;whiteList["box-sizing"]=true;whiteList["box-snap"]=true;whiteList["box-suppress"]=true;whiteList["break-after"]=true;whiteList["break-before"]=true;whiteList["break-inside"]=true;whiteList["caption-side"]=false;whiteList["chains"]=false;whiteList["clear"]=true;whiteList["clip"]=false;whiteList["clip-path"]=false;whiteList["clip-rule"]=false;whiteList["color"]=true;whiteList["color-interpolation-filters"]=true;whiteList["column-count"]=false;whiteList["column-fill"]=false;whiteList["column-gap"]=false;whiteList["column-rule"]=false;whiteList["column-rule-color"]=false;whiteList["column-rule-style"]=false;whiteList["column-rule-width"]=false;whiteList["column-span"]=false;whiteList["column-width"]=false;whiteList["columns"]=false;whiteList["contain"]=false;whiteList["content"]=false;whiteList["counter-increment"]=false;whiteList["counter-reset"]=false;whiteList["counter-set"]=false;whiteList["crop"]=false;whiteList["cue"]=false;whiteList["cue-after"]=false;whiteList["cue-before"]=false;whiteList["cursor"]=false;whiteList["direction"]=false;whiteList["display"]=true;whiteList["display-inside"]=true;whiteList["display-list"]=true;whiteList["display-outside"]=true;whiteList["dominant-baseline"]=false;whiteList["elevation"]=false;whiteList["empty-cells"]=false;whiteList["filter"]=false;whiteList["flex"]=false;whiteList["flex-basis"]=false;whiteList["flex-direction"]=false;whiteList["flex-flow"]=false;whiteList["flex-grow"]=false;whiteList["flex-shrink"]=false;whiteList["flex-wrap"]=false;whiteList["float"]=false;whiteList["float-offset"]=false;whiteList["flood-color"]=false;whiteList["flood-opacity"]=false;whiteList["flow-from"]=false;whiteList["flow-into"]=false;whiteList["font"]=true;whiteList["font-family"]=true;whiteList["font-feature-settings"]=true;whiteList["font-kerning"]=true;whiteList["font-language-override"]=true;whiteList["font-size"]=true;whiteList["font-size-adjust"]=true;whiteList["font-stretch"]=true;whiteList["font-style"]=true;whiteList["font-synthesis"]=true;whiteList["font-variant"]=true;whiteList["font-variant-alternates"]=true;whiteList["font-variant-caps"]=true;whiteList["font-variant-east-asian"]=true;whiteList["font-variant-ligatures"]=true;whiteList["font-variant-numeric"]=true;whiteList["font-variant-position"]=true;whiteList["font-weight"]=true;whiteList["grid"]=false;whiteList["grid-area"]=false;whiteList["grid-auto-columns"]=false;whiteList["grid-auto-flow"]=false;whiteList["grid-auto-rows"]=false;whiteList["grid-column"]=false;whiteList["grid-column-end"]=false;whiteList["grid-column-start"]=false;whiteList["grid-row"]=false;whiteList["grid-row-end"]=false;whiteList["grid-row-start"]=false;whiteList["grid-template"]=false;whiteList["grid-template-areas"]=false;whiteList["grid-template-columns"]=false;whiteList["grid-template-rows"]=false;whiteList["hanging-punctuation"]=false;whiteList["height"]=true;whiteList["hyphens"]=false;whiteList["icon"]=false;whiteList["image-orientation"]=false;whiteList["image-resolution"]=false;whiteList["ime-mode"]=false;whiteList["initial-letters"]=false;whiteList["inline-box-align"]=false;whiteList["justify-content"]=false;whiteList["justify-items"]=false;whiteList["justify-self"]=false;whiteList["left"]=false;whiteList["letter-spacing"]=true;whiteList["lighting-color"]=true;whiteList["line-box-contain"]=false;whiteList["line-break"]=false;whiteList["line-grid"]=false;whiteList["line-height"]=false;whiteList["line-snap"]=false;whiteList["line-stacking"]=false;whiteList["line-stacking-ruby"]=false;whiteList["line-stacking-shift"]=false;whiteList["line-stacking-strategy"]=false;whiteList["list-style"]=true;whiteList["list-style-image"]=true;whiteList["list-style-position"]=true;whiteList["list-style-type"]=true;whiteList["margin"]=true;whiteList["margin-bottom"]=true;whiteList["margin-left"]=true;whiteList["margin-right"]=true;whiteList["margin-top"]=true;whiteList["marker-offset"]=false;whiteList["marker-side"]=false;whiteList["marks"]=false;whiteList["mask"]=false;whiteList["mask-box"]=false;whiteList["mask-box-outset"]=false;whiteList["mask-box-repeat"]=false;whiteList["mask-box-slice"]=false;whiteList["mask-box-source"]=false;whiteList["mask-box-width"]=false;whiteList["mask-clip"]=false;whiteList["mask-image"]=false;whiteList["mask-origin"]=false;whiteList["mask-position"]=false;whiteList["mask-repeat"]=false;whiteList["mask-size"]=false;whiteList["mask-source-type"]=false;whiteList["mask-type"]=false;whiteList["max-height"]=true;whiteList["max-lines"]=false;whiteList["max-width"]=true;whiteList["min-height"]=true;whiteList["min-width"]=true;whiteList["move-to"]=false;whiteList["nav-down"]=false;whiteList["nav-index"]=false;whiteList["nav-left"]=false;whiteList["nav-right"]=false;whiteList["nav-up"]=false;whiteList["object-fit"]=false;whiteList["object-position"]=false;whiteList["opacity"]=false;whiteList["order"]=false;whiteList["orphans"]=false;whiteList["outline"]=false;whiteList["outline-color"]=false;whiteList["outline-offset"]=false;whiteList["outline-style"]=false;whiteList["outline-width"]=false;whiteList["overflow"]=false;whiteList["overflow-wrap"]=false;whiteList["overflow-x"]=false;whiteList["overflow-y"]=false;whiteList["padding"]=true;whiteList["padding-bottom"]=true;whiteList["padding-left"]=true;whiteList["padding-right"]=true;whiteList["padding-top"]=true;whiteList["page"]=false;whiteList["page-break-after"]=false;whiteList["page-break-before"]=false;whiteList["page-break-inside"]=false;whiteList["page-policy"]=false;whiteList["pause"]=false;whiteList["pause-after"]=false;whiteList["pause-before"]=false;whiteList["perspective"]=false;whiteList["perspective-origin"]=false;whiteList["pitch"]=false;whiteList["pitch-range"]=false;whiteList["play-during"]=false;whiteList["position"]=false;whiteList["presentation-level"]=false;whiteList["quotes"]=false;whiteList["region-fragment"]=false;whiteList["resize"]=false;whiteList["rest"]=false;whiteList["rest-after"]=false;whiteList["rest-before"]=false;whiteList["richness"]=false;whiteList["right"]=false;whiteList["rotation"]=false;whiteList["rotation-point"]=false;whiteList["ruby-align"]=false;whiteList["ruby-merge"]=false;whiteList["ruby-position"]=false;whiteList["shape-image-threshold"]=false;whiteList["shape-outside"]=false;whiteList["shape-margin"]=false;whiteList["size"]=false;whiteList["speak"]=false;whiteList["speak-as"]=false;whiteList["speak-header"]=false;whiteList["speak-numeral"]=false;whiteList["speak-punctuation"]=false;whiteList["speech-rate"]=false;whiteList["stress"]=false;whiteList["string-set"]=false;whiteList["tab-size"]=false;whiteList["table-layout"]=false;whiteList["text-align"]=true;whiteList["text-align-last"]=true;whiteList["text-combine-upright"]=true;whiteList["text-decoration"]=true;whiteList["text-decoration-color"]=true;whiteList["text-decoration-line"]=true;whiteList["text-decoration-skip"]=true;whiteList["text-decoration-style"]=true;whiteList["text-emphasis"]=true;whiteList["text-emphasis-color"]=true;whiteList["text-emphasis-position"]=true;whiteList["text-emphasis-style"]=true;whiteList["text-height"]=true;whiteList["text-indent"]=true;whiteList["text-justify"]=true;whiteList["text-orientation"]=true;whiteList["text-overflow"]=true;whiteList["text-shadow"]=true;whiteList["text-space-collapse"]=true;whiteList["text-transform"]=true;whiteList["text-underline-position"]=true;whiteList["text-wrap"]=true;whiteList["top"]=false;whiteList["transform"]=false;whiteList["transform-origin"]=false;whiteList["transform-style"]=false;whiteList["transition"]=false;whiteList["transition-delay"]=false;whiteList["transition-duration"]=false;whiteList["transition-property"]=false;whiteList["transition-timing-function"]=false;whiteList["unicode-bidi"]=false;whiteList["vertical-align"]=false;whiteList["visibility"]=false;whiteList["voice-balance"]=false;whiteList["voice-duration"]=false;whiteList["voice-family"]=false;whiteList["voice-pitch"]=false;whiteList["voice-range"]=false;whiteList["voice-rate"]=false;whiteList["voice-stress"]=false;whiteList["voice-volume"]=false;whiteList["volume"]=false;whiteList["white-space"]=false;whiteList["widows"]=false;whiteList["width"]=true;whiteList["will-change"]=false;whiteList["word-break"]=true;whiteList["word-spacing"]=true;whiteList["word-wrap"]=true;whiteList["wrap-flow"]=false;whiteList["wrap-through"]=false;whiteList["writing-mode"]=false;whiteList["z-index"]=false;return whiteList}function onAttr(name,value,options){}function onIgnoreAttr(name,value,options){}var REGEXP_URL_JAVASCRIPT=/javascript\s*\:/gim;function safeAttrValue(name,value){if(REGEXP_URL_JAVASCRIPT.test(value))return"";return value}exports.whiteList=getDefaultWhiteList();exports.getDefaultWhiteList=getDefaultWhiteList;exports.onAttr=onAttr;exports.onIgnoreAttr=onIgnoreAttr;exports.safeAttrValue=safeAttrValue},{}],8:[function(require,module,exports){var DEFAULT=require("./default");var FilterCSS=require("./css");function filterCSS(html,options){var xss=new FilterCSS(options);return xss.process(html)}exports=module.exports=filterCSS;exports.FilterCSS=FilterCSS;for(var i in DEFAULT)exports[i]=DEFAULT[i];if(typeof window!=="undefined"){window.filterCSS=module.exports}},{"./css":6,"./default":7}],9:[function(require,module,exports){var _=require("./util");function parseStyle(css,onAttr){css=_.trimRight(css);if(css[css.length-1]!==";")css+=";";var cssLength=css.length;var isParenthesisOpen=false;var lastPos=0;var i=0;var retCSS="";function addNewAttr(){if(!isParenthesisOpen){var source=_.trim(css.slice(lastPos,i));var j=source.indexOf(":");if(j!==-1){var name=_.trim(source.slice(0,j));var value=_.trim(source.slice(j+1));if(name){var ret=onAttr(lastPos,retCSS.length,name,value,source);if(ret)retCSS+=ret+"; "}}}lastPos=i+1}for(;i
+ */
+
+var xss = require("./");
+var readline = require("readline");
+
+var rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+console.log('Enter a blank line to do xss(), enter "@quit" to exit.\n');
+
+function take(c, n) {
+  var ret = "";
+  for (var i = 0; i < n; i++) {
+    ret += c;
+  }
+  return ret;
+}
+
+function setPrompt(line) {
+  line = line.toString();
+  rl.setPrompt("[" + line + "]" + take(" ", 5 - line.length));
+  rl.prompt();
+}
+
+setPrompt(1);
+
+var html = [];
+rl.on("line", function(line) {
+  if (line === "@quit") return process.exit();
+  if (line === "") {
+    console.log("");
+    console.log(xss(html.join("\r\n")));
+    console.log("");
+    html = [];
+  } else {
+    html.push(line);
+  }
+  setPrompt(html.length + 1);
+});
diff --git a/node_modules/xss/lib/default.js b/node_modules/xss/lib/default.js
new file mode 100644
index 0000000..1452ed3
--- /dev/null
+++ b/node_modules/xss/lib/default.js
@@ -0,0 +1,415 @@
+/**
+ * default settings
+ *
+ * @author Zongmin Lei
+ */
+
+var FilterCSS = require("cssfilter").FilterCSS;
+var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
+var _ = require("./util");
+
+function getDefaultWhiteList() {
+  return {
+    a: ["target", "href", "title"],
+    abbr: ["title"],
+    address: [],
+    area: ["shape", "coords", "href", "alt"],
+    article: [],
+    aside: [],
+    audio: ["autoplay", "controls", "loop", "preload", "src"],
+    b: [],
+    bdi: ["dir"],
+    bdo: ["dir"],
+    big: [],
+    blockquote: ["cite"],
+    br: [],
+    caption: [],
+    center: [],
+    cite: [],
+    code: [],
+    col: ["align", "valign", "span", "width"],
+    colgroup: ["align", "valign", "span", "width"],
+    dd: [],
+    del: ["datetime"],
+    details: ["open"],
+    div: [],
+    dl: [],
+    dt: [],
+    em: [],
+    font: ["color", "size", "face"],
+    footer: [],
+    h1: [],
+    h2: [],
+    h3: [],
+    h4: [],
+    h5: [],
+    h6: [],
+    header: [],
+    hr: [],
+    i: [],
+    img: ["src", "alt", "title", "width", "height"],
+    ins: ["datetime"],
+    li: [],
+    mark: [],
+    nav: [],
+    ol: [],
+    p: [],
+    pre: [],
+    s: [],
+    section: [],
+    small: [],
+    span: [],
+    sub: [],
+    sup: [],
+    strong: [],
+    table: ["width", "border", "align", "valign"],
+    tbody: ["align", "valign"],
+    td: ["width", "rowspan", "colspan", "align", "valign"],
+    tfoot: ["align", "valign"],
+    th: ["width", "rowspan", "colspan", "align", "valign"],
+    thead: ["align", "valign"],
+    tr: ["rowspan", "align", "valign"],
+    tt: [],
+    u: [],
+    ul: [],
+    video: ["autoplay", "controls", "loop", "preload", "src", "height", "width"]
+  };
+}
+
+var defaultCSSFilter = new FilterCSS();
+
+/**
+ * default onTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onTag(tag, html, options) {
+  // do nothing
+}
+
+/**
+ * default onIgnoreTag function
+ *
+ * @param {String} tag
+ * @param {String} html
+ * @param {Object} options
+ * @return {String}
+ */
+function onIgnoreTag(tag, html, options) {
+  // do nothing
+}
+
+/**
+ * default onTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onTagAttr(tag, name, value) {
+  // do nothing
+}
+
+/**
+ * default onIgnoreTagAttr function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @return {String}
+ */
+function onIgnoreTagAttr(tag, name, value) {
+  // do nothing
+}
+
+/**
+ * default escapeHtml function
+ *
+ * @param {String} html
+ */
+function escapeHtml(html) {
+  return html.replace(REGEXP_LT, "<").replace(REGEXP_GT, ">");
+}
+
+/**
+ * default safeAttrValue function
+ *
+ * @param {String} tag
+ * @param {String} name
+ * @param {String} value
+ * @param {Object} cssFilter
+ * @return {String}
+ */
+function safeAttrValue(tag, name, value, cssFilter) {
+  // unescape attribute value firstly
+  value = friendlyAttrValue(value);
+
+  if (name === "href" || name === "src") {
+    // filter `href` and `src` attribute
+    // only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#`
+    value = _.trim(value);
+    if (value === "#") return "#";
+    if (
+      !(
+        value.substr(0, 7) === "http://" ||
+        value.substr(0, 8) === "https://" ||
+        value.substr(0, 7) === "mailto:" ||
+        value.substr(0, 4) === "tel:" ||
+        value[0] === "#" ||
+        value[0] === "/"
+      )
+    ) {
+      return "";
+    }
+  } else if (name === "background") {
+    // filter `background` attribute (maybe no use)
+    // `javascript:`
+    REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
+      return "";
+    }
+  } else if (name === "style") {
+    // `expression()`
+    REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
+      return "";
+    }
+    // `url()`
+    REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
+    if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
+      REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
+      if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
+        return "";
+      }
+    }
+    if (cssFilter !== false) {
+      cssFilter = cssFilter || defaultCSSFilter;
+      value = cssFilter.process(value);
+    }
+  }
+
+  // escape `<>"` before returns
+  value = escapeAttrValue(value);
+  return value;
+}
+
+// RegExp list
+var REGEXP_LT = //g;
+var REGEXP_QUOTE = /"/g;
+var REGEXP_QUOTE_2 = /"/g;
+var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
+var REGEXP_ATTR_VALUE_COLON = /:?/gim;
+var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
+var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
+var REGEXP_DEFAULT_ON_TAG_ATTR_4 = /((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_7 = /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;
+var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
+
+/**
+ * escape doube quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function escapeQuote(str) {
+  return str.replace(REGEXP_QUOTE, """);
+}
+
+/**
+ * unescape double quote
+ *
+ * @param {String} str
+ * @return {String} str
+ */
+function unescapeQuote(str) {
+  return str.replace(REGEXP_QUOTE_2, '"');
+}
+
+/**
+ * escape html entities
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeHtmlEntities(str) {
+  return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode(str, code) {
+    return code[0] === "x" || code[0] === "X"
+      ? String.fromCharCode(parseInt(code.substr(1), 16))
+      : String.fromCharCode(parseInt(code, 10));
+  });
+}
+
+/**
+ * escape html5 new danger entities
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeDangerHtml5Entities(str) {
+  return str
+    .replace(REGEXP_ATTR_VALUE_COLON, ":")
+    .replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
+}
+
+/**
+ * clear nonprintable characters
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function clearNonPrintableCharacter(str) {
+  var str2 = "";
+  for (var i = 0, len = str.length; i < len; i++) {
+    str2 += str.charCodeAt(i) < 32 ? " " : str.charAt(i);
+  }
+  return _.trim(str2);
+}
+
+/**
+ * get friendly attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function friendlyAttrValue(str) {
+  str = unescapeQuote(str);
+  str = escapeHtmlEntities(str);
+  str = escapeDangerHtml5Entities(str);
+  str = clearNonPrintableCharacter(str);
+  return str;
+}
+
+/**
+ * unescape attribute value
+ *
+ * @param {String} str
+ * @return {String}
+ */
+function escapeAttrValue(str) {
+  str = escapeQuote(str);
+  str = escapeHtml(str);
+  return str;
+}
+
+/**
+ * `onIgnoreTag` function for removing all the tags that are not in whitelist
+ */
+function onIgnoreTagStripAll() {
+  return "";
+}
+
+/**
+ * remove tag body
+ * specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
+ *
+ * @param {array} tags
+ * @param {function} next
+ */
+function StripTagBody(tags, next) {
+  if (typeof next !== "function") {
+    next = function() {};
+  }
+
+  var isRemoveAllTag = !Array.isArray(tags);
+  function isRemoveTag(tag) {
+    if (isRemoveAllTag) return true;
+    return _.indexOf(tags, tag) !== -1;
+  }
+
+  var removeList = [];
+  var posStart = false;
+
+  return {
+    onIgnoreTag: function(tag, html, options) {
+      if (isRemoveTag(tag)) {
+        if (options.isClosing) {
+          var ret = "[/removed]";
+          var end = options.position + ret.length;
+          removeList.push([
+            posStart !== false ? posStart : options.position,
+            end
+          ]);
+          posStart = false;
+          return ret;
+        } else {
+          if (!posStart) {
+            posStart = options.position;
+          }
+          return "[removed]";
+        }
+      } else {
+        return next(tag, html, options);
+      }
+    },
+    remove: function(html) {
+      var rethtml = "";
+      var lastPos = 0;
+      _.forEach(removeList, function(pos) {
+        rethtml += html.slice(lastPos, pos[0]);
+        lastPos = pos[1];
+      });
+      rethtml += html.slice(lastPos);
+      return rethtml;
+    }
+  };
+}
+
+/**
+ * remove html comments
+ *
+ * @param {String} html
+ * @return {String}
+ */
+function stripCommentTag(html) {
+  return html.replace(STRIP_COMMENT_TAG_REGEXP, "");
+}
+var STRIP_COMMENT_TAG_REGEXP = //g;
+
+/**
+ * remove invisible characters
+ *
+ * @param {String} html
+ * @return {String}
+ */
+function stripBlankChar(html) {
+  var chars = html.split("");
+  chars = chars.filter(function(char) {
+    var c = char.charCodeAt(0);
+    if (c === 127) return false;
+    if (c <= 31) {
+      if (c === 10 || c === 13) return true;
+      return false;
+    }
+    return true;
+  });
+  return chars.join("");
+}
+
+exports.whiteList = getDefaultWhiteList();
+exports.getDefaultWhiteList = getDefaultWhiteList;
+exports.onTag = onTag;
+exports.onIgnoreTag = onIgnoreTag;
+exports.onTagAttr = onTagAttr;
+exports.onIgnoreTagAttr = onIgnoreTagAttr;
+exports.safeAttrValue = safeAttrValue;
+exports.escapeHtml = escapeHtml;
+exports.escapeQuote = escapeQuote;
+exports.unescapeQuote = unescapeQuote;
+exports.escapeHtmlEntities = escapeHtmlEntities;
+exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
+exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
+exports.friendlyAttrValue = friendlyAttrValue;
+exports.escapeAttrValue = escapeAttrValue;
+exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
+exports.StripTagBody = StripTagBody;
+exports.stripCommentTag = stripCommentTag;
+exports.stripBlankChar = stripBlankChar;
+exports.cssFilter = defaultCSSFilter;
+exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
diff --git a/node_modules/xss/lib/index.js b/node_modules/xss/lib/index.js
new file mode 100644
index 0000000..e0c1a06
--- /dev/null
+++ b/node_modules/xss/lib/index.js
@@ -0,0 +1,40 @@
+/**
+ * xss
+ *
+ * @author Zongmin Lei
+ */
+
+var DEFAULT = require("./default");
+var parser = require("./parser");
+var FilterXSS = require("./xss");
+
+/**
+ * filter xss function
+ *
+ * @param {String} html
+ * @param {Object} options { whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml }
+ * @return {String}
+ */
+function filterXSS(html, options) {
+  var xss = new FilterXSS(options);
+  return xss.process(html);
+}
+
+exports = module.exports = filterXSS;
+exports.filterXSS = filterXSS;
+exports.FilterXSS = FilterXSS;
+for (var i in DEFAULT) exports[i] = DEFAULT[i];
+for (var i in parser) exports[i] = parser[i];
+
+// using `xss` on the browser, output `filterXSS` to the globals
+if (typeof window !== "undefined") {
+  window.filterXSS = module.exports;
+}
+
+// using `xss` on the WebWorker, output `filterXSS` to the globals
+function isWorkerEnv() {
+  return typeof self !== 'undefined' && typeof DedicatedWorkerGlobalScope !== 'undefined' && self instanceof DedicatedWorkerGlobalScope;
+}
+if (isWorkerEnv()) {
+  self.filterXSS = module.exports;
+}
diff --git a/node_modules/xss/lib/parser.js b/node_modules/xss/lib/parser.js
new file mode 100644
index 0000000..7c15def
--- /dev/null
+++ b/node_modules/xss/lib/parser.js
@@ -0,0 +1,239 @@
+/**
+ * Simple HTML Parser
+ *
+ * @author Zongmin Lei
+ */
+
+var _ = require("./util");
+
+/**
+ * get tag name
+ *
+ * @param {String} html e.g. ''
+ * @return {String}
+ */
+function getTagName(html) {
+  var i = _.spaceIndex(html);
+  if (i === -1) {
+    var tagName = html.slice(1, -1);
+  } else {
+    var tagName = html.slice(1, i + 1);
+  }
+  tagName = _.trim(tagName).toLowerCase();
+  if (tagName.slice(0, 1) === "/") tagName = tagName.slice(1);
+  if (tagName.slice(-1) === "/") tagName = tagName.slice(0, -1);
+  return tagName;
+}
+
+/**
+ * is close tag?
+ *
+ * @param {String} html 如：''
+ * @return {Boolean}
+ */
+function isClosing(html) {
+  return html.slice(0, 2) === "") {
+          rethtml += escapeHtml(html.slice(lastPos, tagStart));
+          currentHtml = html.slice(tagStart, currentPos + 1);
+          currentTagName = getTagName(currentHtml);
+          rethtml += onTag(
+            tagStart,
+            rethtml.length,
+            currentTagName,
+            currentHtml,
+            isClosing(currentHtml)
+          );
+          lastPos = currentPos + 1;
+          tagStart = false;
+          continue;
+        }
+        if ((c === '"' || c === "'") && html.charAt(currentPos - 1) === "=") {
+          quoteStart = c;
+          continue;
+        }
+      } else {
+        if (c === quoteStart) {
+          quoteStart = false;
+          continue;
+        }
+      }
+    }
+  }
+  if (lastPos < html.length) {
+    rethtml += escapeHtml(html.substr(lastPos));
+  }
+
+  return rethtml;
+}
+
+var REGEXP_ILLEGAL_ATTR_NAME = /[^a-zA-Z0-9_:\.\-]/gim;
+
+/**
+ * parse input attributes and returns processed attributes
+ *
+ * @param {String} html e.g. `href="#" target="_blank"`
+ * @param {Function} onAttr e.g. `function (name, value)`
+ * @return {String}
+ */
+function parseAttr(html, onAttr) {
+  "user strict";
+
+  var lastPos = 0;
+  var retAttrs = [];
+  var tmpName = false;
+  var len = html.length;
+
+  function addAttr(name, value) {
+    name = _.trim(name);
+    name = name.replace(REGEXP_ILLEGAL_ATTR_NAME, "").toLowerCase();
+    if (name.length < 1) return;
+    var ret = onAttr(name, value || "");
+    if (ret) retAttrs.push(ret);
+  }
+
+  // 逐个分析字符
+  for (var i = 0; i < len; i++) {
+    var c = html.charAt(i);
+    var v, j;
+    if (tmpName === false && c === "=") {
+      tmpName = html.slice(lastPos, i);
+      lastPos = i + 1;
+      continue;
+    }
+    if (tmpName !== false) {
+      if (
+        i === lastPos &&
+        (c === '"' || c === "'") &&
+        html.charAt(i - 1) === "="
+      ) {
+        j = html.indexOf(c, i + 1);
+        if (j === -1) {
+          break;
+        } else {
+          v = _.trim(html.slice(lastPos + 1, j));
+          addAttr(tmpName, v);
+          tmpName = false;
+          i = j;
+          lastPos = i + 1;
+          continue;
+        }
+      }
+    }
+    if (/\s|\n|\t/.test(c)) {
+      html = html.replace(/\s|\n|\t/g, " ");
+      if (tmpName === false) {
+        j = findNextEqual(html, i);
+        if (j === -1) {
+          v = _.trim(html.slice(lastPos, i));
+          addAttr(v);
+          tmpName = false;
+          lastPos = i + 1;
+          continue;
+        } else {
+          i = j - 1;
+          continue;
+        }
+      } else {
+        j = findBeforeEqual(html, i - 1);
+        if (j === -1) {
+          v = _.trim(html.slice(lastPos, i));
+          v = stripQuoteWrap(v);
+          addAttr(tmpName, v);
+          tmpName = false;
+          lastPos = i + 1;
+          continue;
+        } else {
+          continue;
+        }
+      }
+    }
+  }
+
+  if (lastPos < html.length) {
+    if (tmpName === false) {
+      addAttr(html.slice(lastPos));
+    } else {
+      addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
+    }
+  }
+
+  return _.trim(retAttrs.join(" "));
+}
+
+function findNextEqual(str, i) {
+  for (; i < str.length; i++) {
+    var c = str[i];
+    if (c === " ") continue;
+    if (c === "=") return i;
+    return -1;
+  }
+}
+
+function findBeforeEqual(str, i) {
+  for (; i > 0; i--) {
+    var c = str[i];
+    if (c === " ") continue;
+    if (c === "=") return i;
+    return -1;
+  }
+}
+
+function isQuoteWrapString(text) {
+  if (
+    (text[0] === '"' && text[text.length - 1] === '"') ||
+    (text[0] === "'" && text[text.length - 1] === "'")
+  ) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+function stripQuoteWrap(text) {
+  if (isQuoteWrapString(text)) {
+    return text.substr(1, text.length - 2);
+  } else {
+    return text;
+  }
+}
+
+exports.parseTag = parseTag;
+exports.parseAttr = parseAttr;
diff --git a/node_modules/xss/lib/util.js b/node_modules/xss/lib/util.js
new file mode 100644
index 0000000..1dcd7fa
--- /dev/null
+++ b/node_modules/xss/lib/util.js
@@ -0,0 +1,34 @@
+module.exports = {
+  indexOf: function(arr, item) {
+    var i, j;
+    if (Array.prototype.indexOf) {
+      return arr.indexOf(item);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      if (arr[i] === item) {
+        return i;
+      }
+    }
+    return -1;
+  },
+  forEach: function(arr, fn, scope) {
+    var i, j;
+    if (Array.prototype.forEach) {
+      return arr.forEach(fn, scope);
+    }
+    for (i = 0, j = arr.length; i < j; i++) {
+      fn.call(scope, arr[i], i, arr);
+    }
+  },
+  trim: function(str) {
+    if (String.prototype.trim) {
+      return str.trim();
+    }
+    return str.replace(/(^\s*)|(\s*$)/g, "");
+  },
+  spaceIndex: function(str) {
+    var reg = /\s|\n|\t/;
+    var match = reg.exec(str);
+    return match ? match.index : -1;
+  }
+};
diff --git a/node_modules/xss/lib/xss.js b/node_modules/xss/lib/xss.js
new file mode 100644
index 0000000..74d2e42
--- /dev/null
+++ b/node_modules/xss/lib/xss.js
@@ -0,0 +1,211 @@
+/**
+ * filter xss
+ *
+ * @author Zongmin Lei
+ */
+
+var FilterCSS = require("cssfilter").FilterCSS;
+var DEFAULT = require("./default");
+var parser = require("./parser");
+var parseTag = parser.parseTag;
+var parseAttr = parser.parseAttr;
+var _ = require("./util");
+
+/**
+ * returns `true` if the input value is `undefined` or `null`
+ *
+ * @param {Object} obj
+ * @return {Boolean}
+ */
+function isNull(obj) {
+  return obj === undefined || obj === null;
+}
+
+/**
+ * get attributes for a tag
+ *
+ * @param {String} html
+ * @return {Object}
+ *   - {String} html
+ *   - {Boolean} closing
+ */
+function getAttrs(html) {
+  var i = _.spaceIndex(html);
+  if (i === -1) {
+    return {
+      html: "",
+      closing: html[html.length - 2] === "/"
+    };
+  }
+  html = _.trim(html.slice(i + 1, -1));
+  var isClosing = html[html.length - 1] === "/";
+  if (isClosing) html = _.trim(html.slice(0, -1));
+  return {
+    html: html,
+    closing: isClosing
+  };
+}
+
+/**
+ * shallow copy
+ *
+ * @param {Object} obj
+ * @return {Object}
+ */
+function shallowCopyObject(obj) {
+  var ret = {};
+  for (var i in obj) {
+    ret[i] = obj[i];
+  }
+  return ret;
+}
+
+/**
+ * FilterXSS class
+ *
+ * @param {Object} options
+ *        whiteList, onTag, onTagAttr, onIgnoreTag,
+ *        onIgnoreTagAttr, safeAttrValue, escapeHtml
+ *        stripIgnoreTagBody, allowCommentTag, stripBlankChar
+ *        css{whiteList, onAttr, onIgnoreAttr} `css=false` means don't use `cssfilter`
+ */
+function FilterXSS(options) {
+  options = shallowCopyObject(options || {});
+
+  if (options.stripIgnoreTag) {
+    if (options.onIgnoreTag) {
+      console.error(
+        'Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time'
+      );
+    }
+    options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
+  }
+
+  options.whiteList = options.whiteList || DEFAULT.whiteList;
+  options.onTag = options.onTag || DEFAULT.onTag;
+  options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
+  options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
+  options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
+  options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
+  options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
+  this.options = options;
+
+  if (options.css === false) {
+    this.cssFilter = false;
+  } else {
+    options.css = options.css || {};
+    this.cssFilter = new FilterCSS(options.css);
+  }
+}
+
+/**
+ * start process and returns result
+ *
+ * @param {String} html
+ * @return {String}
+ */
+FilterXSS.prototype.process = function(html) {
+  // compatible with the input
+  html = html || "";
+  html = html.toString();
+  if (!html) return "";
+
+  var me = this;
+  var options = me.options;
+  var whiteList = options.whiteList;
+  var onTag = options.onTag;
+  var onIgnoreTag = options.onIgnoreTag;
+  var onTagAttr = options.onTagAttr;
+  var onIgnoreTagAttr = options.onIgnoreTagAttr;
+  var safeAttrValue = options.safeAttrValue;
+  var escapeHtml = options.escapeHtml;
+  var cssFilter = me.cssFilter;
+
+  // remove invisible characters
+  if (options.stripBlankChar) {
+    html = DEFAULT.stripBlankChar(html);
+  }
+
+  // remove html comments
+  if (!options.allowCommentTag) {
+    html = DEFAULT.stripCommentTag(html);
+  }
+
+  // if enable stripIgnoreTagBody
+  var stripIgnoreTagBody = false;
+  if (options.stripIgnoreTagBody) {
+    var stripIgnoreTagBody = DEFAULT.StripTagBody(
+      options.stripIgnoreTagBody,
+      onIgnoreTag
+    );
+    onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
+  }
+
+  var retHtml = parseTag(
+    html,
+    function(sourcePosition, position, tag, html, isClosing) {
+      var info = {
+        sourcePosition: sourcePosition,
+        position: position,
+        isClosing: isClosing,
+        isWhite: whiteList.hasOwnProperty(tag)
+      };
+
+      // call `onTag()`
+      var ret = onTag(tag, html, info);
+      if (!isNull(ret)) return ret;
+
+      if (info.isWhite) {
+        if (info.isClosing) {
+          return "";
+        }
+
+        var attrs = getAttrs(html);
+        var whiteAttrList = whiteList[tag];
+        var attrsHtml = parseAttr(attrs.html, function(name, value) {
+          // call `onTagAttr()`
+          var isWhiteAttr = _.indexOf(whiteAttrList, name) !== -1;
+          var ret = onTagAttr(tag, name, value, isWhiteAttr);
+          if (!isNull(ret)) return ret;
+
+          if (isWhiteAttr) {
+            // call `safeAttrValue()`
+            value = safeAttrValue(tag, name, value, cssFilter);
+            if (value) {
+              return name + '="' + value + '"';
+            } else {
+              return name;
+            }
+          } else {
+            // call `onIgnoreTagAttr()`
+            var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
+            if (!isNull(ret)) return ret;
+            return;
+          }
+        });
+
+        // build new tag html
+        var html = "<" + tag;
+        if (attrsHtml) html += " " + attrsHtml;
+        if (attrs.closing) html += " /";
+        html += ">";
+        return html;
+      } else {
+        // call `onIgnoreTag()`
+        var ret = onIgnoreTag(tag, html, info);
+        if (!isNull(ret)) return ret;
+        return escapeHtml(html);
+      }
+    },
+    escapeHtml
+  );
+
+  // if enable stripIgnoreTagBody
+  if (stripIgnoreTagBody) {
+    retHtml = stripIgnoreTagBody.remove(retHtml);
+  }
+
+  return retHtml;
+};
+
+module.exports = FilterXSS;
diff --git a/node_modules/xss/package.json b/node_modules/xss/package.json
new file mode 100644
index 0000000..8caf468
--- /dev/null
+++ b/node_modules/xss/package.json
@@ -0,0 +1,92 @@
+{
+  "_from": "xss",
+  "_id": "xss@1.0.6",
+  "_inBundle": false,
+  "_integrity": "sha512-6Q9TPBeNyoTRxgZFk5Ggaepk/4vUOYdOsIUYvLehcsIZTFjaavbVnsuAkLA5lIFuug5hw8zxcB9tm01gsjph2A==",
+  "_location": "/xss",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "tag",
+    "registry": true,
+    "raw": "xss",
+    "name": "xss",
+    "escapedName": "xss",
+    "rawSpec": "",
+    "saveSpec": null,
+    "fetchSpec": "latest"
+  },
+  "_requiredBy": [
+    "#USER",
+    "/"
+  ],
+  "_resolved": "https://registry.npmjs.org/xss/-/xss-1.0.6.tgz",
+  "_shasum": "eaf11e9fc476e3ae289944a1009efddd8a124b51",
+  "_spec": "xss",
+  "_where": "/home/cargova/projects/beziapp.github.io",
+  "author": {
+    "name": "Zongmin Lei",
+    "email": "leizongmin@gmail.com",
+    "url": "http://ucdok.com"
+  },
+  "bin": {
+    "xss": "./bin/xss"
+  },
+  "bugs": {
+    "url": "https://github.com/leizongmin/js-xss/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "commander": "^2.9.0",
+    "cssfilter": "0.0.10"
+  },
+  "deprecated": false,
+  "description": "Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist",
+  "devDependencies": {
+    "browserify": "^14.1.0",
+    "coveralls": "^3.0.0",
+    "debug": "^3.1.0",
+    "istanbul": "^0.4.3",
+    "mocha": "^4.0.1",
+    "uglify-js": "^3.0.14"
+  },
+  "engines": {
+    "node": ">= 0.10.0"
+  },
+  "files": [
+    "lib",
+    "bin/xss",
+    "dist",
+    "typings/*.d.ts"
+  ],
+  "homepage": "https://github.com/leizongmin/js-xss",
+  "keywords": [
+    "sanitization",
+    "xss",
+    "sanitize",
+    "sanitisation",
+    "input",
+    "security",
+    "escape",
+    "encode",
+    "filter",
+    "validator",
+    "html",
+    "injection",
+    "whitelist"
+  ],
+  "license": "MIT",
+  "main": "./lib/index.js",
+  "name": "xss",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/leizongmin/js-xss.git"
+  },
+  "scripts": {
+    "build": "./bin/build",
+    "prepublish": "npm run test && npm run build",
+    "test": "export DEBUG=xss:* && mocha -t 5000",
+    "test-cov": "export DEBUG=xss:* && istanbul cover _mocha --report lcovonly -- -t 5000 -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage"
+  },
+  "typings": "./typings/xss.d.ts",
+  "version": "1.0.6"
+}
diff --git a/node_modules/xss/typings/xss.d.ts b/node_modules/xss/typings/xss.d.ts
new file mode 100644
index 0000000..1f6f2ca
--- /dev/null
+++ b/node_modules/xss/typings/xss.d.ts
@@ -0,0 +1,189 @@
+/**
+ * xss
+ *
+ * @author Zongmin Lei
+ */
+
+declare global {
+  function filterXSS(html: string, options?: IFilterXSSOptions): string;
+
+  namespace XSS {
+    export interface IFilterXSSOptions {
+      whiteList?: IWhiteList;
+      onTag?: OnTagHandler;
+      onTagAttr?: OnTagAttrHandler;
+      onIgnoreTag?: OnTagHandler;
+      onIgnoreTagAttr?: OnTagAttrHandler;
+      safeAttrValue?: SafeAttrValueHandler;
+      escapeHtml?: EscapeHandler;
+      stripIgnoreTag?: boolean;
+      stripIgnoreTagBody?: boolean | string[];
+      allowCommentTag?: boolean;
+      stripBlankChar?: boolean;
+      css?: {} | boolean;
+    }
+
+    interface IWhiteList {
+      a?: string[];
+      abbr?: string[];
+      address?: string[];
+      area?: string[];
+      article?: string[];
+      aside?: string[];
+      audio?: string[];
+      b?: string[];
+      bdi?: string[];
+      bdo?: string[];
+      big?: string[];
+      blockquote?: string[];
+      br?: string[];
+      caption?: string[];
+      center?: string[];
+      cite?: string[];
+      code?: string[];
+      col?: string[];
+      colgroup?: string[];
+      dd?: string[];
+      del?: string[];
+      details?: string[];
+      div?: string[];
+      dl?: string[];
+      dt?: string[];
+      em?: string[];
+      font?: string[];
+      footer?: string[];
+      h1?: string[];
+      h2?: string[];
+      h3?: string[];
+      h4?: string[];
+      h5?: string[];
+      h6?: string[];
+      header?: string[];
+      hr?: string[];
+      i?: string[];
+      img?: string[];
+      ins?: string[];
+      li?: string[];
+      mark?: string[];
+      nav?: string[];
+      ol?: string[];
+      p?: string[];
+      pre?: string[];
+      s?: string[];
+      section?: string[];
+      small?: string[];
+      span?: string[];
+      sub?: string[];
+      sup?: string[];
+      strong?: string[];
+      table?: string[];
+      tbody?: string[];
+      td?: string[];
+      tfoot?: string[];
+      th?: string[];
+      thead?: string[];
+      tr?: string[];
+      tt?: string[];
+      u?: string[];
+      ul?: string[];
+      video?: string[];
+    }
+
+    type OnTagHandler = (
+      tag: string,
+      html: string,
+      options: {}
+    ) => string | void;
+
+    type OnTagAttrHandler = (
+      tag: string,
+      name: string,
+      value: string,
+      isWhiteAttr: boolean
+    ) => string | void;
+
+    type SafeAttrValueHandler = (
+      tag: string,
+      name: string,
+      value: string,
+      cssFilter: ICSSFilter
+    ) => string;
+
+    type EscapeHandler = (str: string) => string;
+
+    interface ICSSFilter {
+      process(value: string): string;
+    }
+  }
+}
+
+export interface IFilterXSSOptions extends XSS.IFilterXSSOptions {}
+
+export interface IWhiteList extends XSS.IWhiteList {}
+
+export type OnTagHandler = XSS.OnTagHandler;
+
+export type OnTagAttrHandler = XSS.OnTagAttrHandler;
+
+export type SafeAttrValueHandler = XSS.SafeAttrValueHandler;
+
+export type EscapeHandler = XSS.EscapeHandler;
+
+export interface ICSSFilter extends XSS.ICSSFilter {}
+
+export function StripTagBody(
+  tags: string[],
+  next: () => void
+): {
+  onIgnoreTag(
+    tag: string,
+    html: string,
+    options: {
+      position: number;
+      isClosing: boolean;
+    }
+  ): string;
+  remove(html: string): string;
+};
+
+export class FilterXSS {
+  constructor(options?: IFilterXSSOptions);
+  process(html: string): string;
+}
+
+export function filterXSS(html: string, options?: IFilterXSSOptions): string;
+export function parseTag(
+  html: string,
+  onTag: (
+    sourcePosition: number,
+    position: number,
+    tag: string,
+    html: string,
+    isClosing: boolean
+  ) => string,
+  escapeHtml: EscapeHandler
+): string;
+export function parseAttr(
+  html: string,
+  onAttr: (name: string, value: string) => string
+): string;
+export const whiteList: IWhiteList;
+export function getDefaultWhiteList(): IWhiteList;
+export const onTag: OnTagHandler;
+export const onIgnoreTag: OnTagHandler;
+export const onTagAttr: OnTagAttrHandler;
+export const onIgnoreTagAttr: OnTagAttrHandler;
+export const safeAttrValue: SafeAttrValueHandler;
+export const escapeHtml: EscapeHandler;
+export const escapeQuote: EscapeHandler;
+export const unescapeQuote: EscapeHandler;
+export const escapeHtmlEntities: EscapeHandler;
+export const escapeDangerHtml5Entities: EscapeHandler;
+export const clearNonPrintableCharacter: EscapeHandler;
+export const friendlyAttrValue: EscapeHandler;
+export const escapeAttrValue: EscapeHandler;
+export function onIgnoreTagStripAll(): string;
+export const stripCommentTag: EscapeHandler;
+export const stripBlankChar: EscapeHandler;
+export const cssFilter: ICSSFilter;
+export function getDefaultCSSWhiteList(): ICSSFilter;
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