diff options
Diffstat (limited to 'twinstall.cpp')
| -rw-r--r-- | twinstall.cpp | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/twinstall.cpp b/twinstall.cpp new file mode 100644 index 000000000..041c78d63 --- /dev/null +++ b/twinstall.cpp @@ -0,0 +1,167 @@ + +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <sys/stat.h> +#include <sys/wait.h> +#include <unistd.h> + +#include <string.h> +#include <stdio.h> + +#include "twcommon.h" +#include "mincrypt/rsa.h" +#include "mincrypt/sha.h" +#include "minui/minui.h" +#include "minzip/SysUtil.h" +#include "minzip/Zip.h" +#include "mtdutils/mounts.h" +#include "mtdutils/mtdutils.h" +#include "verifier.h" +#include "variables.h" +#include "data.hpp" +#include "partitions.hpp" +#include "twrpDigest.hpp" +#include "twrp-functions.hpp" +extern "C" { + #include "gui/gui.h" +} + +static int Run_Update_Binary(const char *path, ZipArchive *Zip, int* wipe_cache) { + const ZipEntry* binary_location = mzFindZipEntry(Zip, ASSUMED_UPDATE_BINARY_NAME); + string Temp_Binary = "/tmp/updater"; + int binary_fd, ret_val, pipe_fd[2], status, zip_verify; + char buffer[1024]; + const char** args = (const char**)malloc(sizeof(char*) * 5); + FILE* child_data; + + if (binary_location == NULL) { + mzCloseZipArchive(Zip); + return INSTALL_CORRUPT; + } + + // Delete any existing updater + if (TWFunc::Path_Exists(Temp_Binary) && unlink(Temp_Binary.c_str()) != 0) { + LOGINFO("Unable to unlink '%s'\n", Temp_Binary.c_str()); + } + + binary_fd = creat(Temp_Binary.c_str(), 0755); + if (binary_fd < 0) { + mzCloseZipArchive(Zip); + LOGERR("Could not create file for updater extract in '%s'\n", Temp_Binary.c_str()); + return INSTALL_ERROR; + } + + ret_val = mzExtractZipEntryToFile(Zip, binary_location, binary_fd); + close(binary_fd); + mzCloseZipArchive(Zip); + + if (!ret_val) { + LOGERR("Could not extract '%s'\n", ASSUMED_UPDATE_BINARY_NAME); + return INSTALL_ERROR; + } + + pipe(pipe_fd); + + args[0] = Temp_Binary.c_str(); + args[1] = EXPAND(RECOVERY_API_VERSION); + char* temp = (char*)malloc(10); + sprintf(temp, "%d", pipe_fd[1]); + args[2] = temp; + args[3] = (char*)path; + args[4] = NULL; + + pid_t pid = fork(); + if (pid == 0) { + close(pipe_fd[0]); + execv(Temp_Binary.c_str(), (char* const*)args); + printf("E:Can't execute '%s'\n", Temp_Binary.c_str()); + _exit(-1); + } + close(pipe_fd[1]); + + *wipe_cache = 0; + + DataManager::GetValue(TW_SIGNED_ZIP_VERIFY_VAR, zip_verify); + child_data = fdopen(pipe_fd[0], "r"); + while (fgets(buffer, sizeof(buffer), child_data) != NULL) { + char* command = strtok(buffer, " \n"); + if (command == NULL) { + continue; + } else if (strcmp(command, "progress") == 0) { + char* fraction_char = strtok(NULL, " \n"); + char* seconds_char = strtok(NULL, " \n"); + + float fraction_float = strtof(fraction_char, NULL); + int seconds_float = strtol(seconds_char, NULL, 10); + + if (zip_verify) + DataManager::ShowProgress(fraction_float * (1 - VERIFICATION_PROGRESS_FRACTION), seconds_float); + else + DataManager::ShowProgress(fraction_float, seconds_float); + } else if (strcmp(command, "set_progress") == 0) { + char* fraction_char = strtok(NULL, " \n"); + float fraction_float = strtof(fraction_char, NULL); + DataManager::SetProgress(fraction_float); + } else if (strcmp(command, "ui_print") == 0) { + char* display_value = strtok(NULL, "\n"); + if (display_value) { + gui_print("%s", display_value); + } else { + gui_print("\n"); + } + } else if (strcmp(command, "wipe_cache") == 0) { + *wipe_cache = 1; + } else if (strcmp(command, "clear_display") == 0) { + // Do nothing, not supported by TWRP + } else { + LOGERR("unknown command [%s]\n", command); + } + } + fclose(child_data); + + waitpid(pid, &status, 0); + if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { + LOGERR("Error executing updater binary in zip '%s'\n", path); + return INSTALL_ERROR; + } + + return INSTALL_SUCCESS; +} + +extern "C" int TWinstall_zip(const char* path, int* wipe_cache) { + int ret_val, zip_verify, md5_return, key_count; + twrpDigest md5sum; + string strpath = path; + ZipArchive Zip; + + gui_print("Installing '%s'...\nChecking for MD5 file...\n", path); + md5sum.setfn(strpath); + md5_return = md5sum.verify_md5digest(); + if (md5_return == -2) { + // MD5 did not match. + LOGERR("Zip MD5 does not match.\nUnable to install zip.\n"); + return INSTALL_CORRUPT; + } else if (md5_return == -1) { + gui_print("Skipping MD5 check: no MD5 file found.\n"); + } else if (md5_return == 0) + gui_print("Zip MD5 matched.\n"); // MD5 found and matched. + + DataManager::GetValue(TW_SIGNED_ZIP_VERIFY_VAR, zip_verify); + DataManager::SetProgress(0); + if (zip_verify) { + gui_print("Verifying zip signature...\n"); + ret_val = verify_file(path); + if (ret_val != VERIFY_SUCCESS) { + LOGERR("Zip signature verification failed: %i\n", ret_val); + return -1; + } + } + ret_val = mzOpenZipArchive(path, &Zip); + if (ret_val != 0) { + LOGERR("Zip file is corrupt!\n", path); + return INSTALL_CORRUPT; + } + return Run_Update_Binary(path, &Zip, wipe_cache); +} |