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-rw-r--r--applypatch/applypatch.cpp460
1 files changed, 174 insertions, 286 deletions
diff --git a/applypatch/applypatch.cpp b/applypatch/applypatch.cpp
index bc8ea79a9..f9383ddeb 100644
--- a/applypatch/applypatch.cpp
+++ b/applypatch/applypatch.cpp
@@ -44,194 +44,130 @@
#include "otautil/paths.h"
#include "otautil/print_sha1.h"
-static int LoadPartitionContents(const std::string& filename, FileContents* file);
-static int GenerateTarget(const FileContents& source_file, const std::unique_ptr<Value>& patch,
- const std::string& target_filename,
- const uint8_t target_sha1[SHA_DIGEST_LENGTH], const Value* bonus_data);
+using namespace std::string_literals;
-int LoadFileContents(const std::string& filename, FileContents* file) {
- // A special 'filename' beginning with "EMMC:" means to load the contents of a partition.
+static bool GenerateTarget(const Partition& target, const FileContents& source_file,
+ const Value& patch, const Value* bonus_data);
+
+bool LoadFileContents(const std::string& filename, FileContents* file) {
+ // No longer allow loading contents from eMMC partitions.
if (android::base::StartsWith(filename, "EMMC:")) {
- return LoadPartitionContents(filename, file);
+ return false;
}
std::string data;
if (!android::base::ReadFileToString(filename, &data)) {
PLOG(ERROR) << "Failed to read \"" << filename << "\"";
- return -1;
+ return false;
}
file->data = std::vector<unsigned char>(data.begin(), data.end());
SHA1(file->data.data(), file->data.size(), file->sha1);
- return 0;
+ return true;
}
-// Loads the contents of an EMMC partition into the provided FileContents. filename should be a
-// string of the form "EMMC:<partition_device>:...". The smallest size_n bytes for which that prefix
-// of the partition contents has the corresponding sha1 hash will be loaded. It is acceptable for a
-// size value to be repeated with different sha1s. Returns 0 on success.
-//
-// This complexity is needed because if an OTA installation is interrupted, the partition might
-// contain either the source or the target data, which might be of different lengths. We need to
-// know the length in order to read from a partition (there is no "end-of-file" marker), so the
-// caller must specify the possible lengths and the hash of the data, and we'll do the load
-// expecting to find one of those hashes.
-static int LoadPartitionContents(const std::string& filename, FileContents* file) {
- std::vector<std::string> pieces = android::base::Split(filename, ":");
- if (pieces.size() < 4 || pieces.size() % 2 != 0 || pieces[0] != "EMMC") {
- LOG(ERROR) << "LoadPartitionContents called with bad filename \"" << filename << "\"";
- return -1;
- }
-
- size_t pair_count = (pieces.size() - 2) / 2; // # of (size, sha1) pairs in filename
- std::vector<std::pair<size_t, std::string>> pairs;
- for (size_t i = 0; i < pair_count; ++i) {
- size_t size;
- if (!android::base::ParseUint(pieces[i * 2 + 2], &size) || size == 0) {
- LOG(ERROR) << "LoadPartitionContents called with bad size \"" << pieces[i * 2 + 2] << "\"";
- return -1;
- }
- pairs.push_back({ size, pieces[i * 2 + 3] });
+// Reads the contents of a Partition to the given FileContents buffer.
+static bool ReadPartitionToBuffer(const Partition& partition, FileContents* out,
+ bool check_backup) {
+ uint8_t expected_sha1[SHA_DIGEST_LENGTH];
+ if (ParseSha1(partition.hash, expected_sha1) != 0) {
+ LOG(ERROR) << "Failed to parse target hash \"" << partition.hash << "\"";
+ return false;
}
- // Sort the pairs array so that they are in order of increasing size.
- std::sort(pairs.begin(), pairs.end());
-
- const char* partition = pieces[1].c_str();
- android::base::unique_fd dev(open(partition, O_RDONLY));
- if (dev == -1) {
+ android::base::unique_fd dev(open(partition.name.c_str(), O_RDONLY));
+ if (!dev) {
PLOG(ERROR) << "Failed to open eMMC partition \"" << partition << "\"";
- return -1;
- }
-
- SHA_CTX sha_ctx;
- SHA1_Init(&sha_ctx);
-
- // Allocate enough memory to hold the largest size.
- std::vector<unsigned char> buffer(pairs[pair_count - 1].first);
- size_t offset = 0; // # bytes read so far
- bool found = false;
-
- for (const auto& pair : pairs) {
- size_t current_size = pair.first;
- const std::string& current_sha1 = pair.second;
-
- // Read enough additional bytes to get us up to the next size. (Again,
- // we're trying the possibilities in order of increasing size).
- if (current_size - offset > 0) {
- if (!android::base::ReadFully(dev, buffer.data() + offset, current_size - offset)) {
- PLOG(ERROR) << "Failed to read " << current_size - offset << " bytes of data at offset "
- << offset << " for partition " << partition;
- return -1;
+ } else {
+ std::vector<unsigned char> buffer(partition.size);
+ if (!android::base::ReadFully(dev, buffer.data(), buffer.size())) {
+ PLOG(ERROR) << "Failed to read " << buffer.size() << " bytes of data for partition "
+ << partition;
+ } else {
+ SHA1(buffer.data(), buffer.size(), out->sha1);
+ if (memcmp(out->sha1, expected_sha1, SHA_DIGEST_LENGTH) == 0) {
+ out->data = std::move(buffer);
+ return true;
}
-
- SHA1_Update(&sha_ctx, buffer.data() + offset, current_size - offset);
- offset = current_size;
- }
- // Duplicate the SHA context and finalize the duplicate so we can
- // check it against this pair's expected hash.
- SHA_CTX temp_ctx;
- memcpy(&temp_ctx, &sha_ctx, sizeof(SHA_CTX));
- uint8_t sha_so_far[SHA_DIGEST_LENGTH];
- SHA1_Final(sha_so_far, &temp_ctx);
-
- uint8_t parsed_sha[SHA_DIGEST_LENGTH];
- if (ParseSha1(current_sha1, parsed_sha) != 0) {
- LOG(ERROR) << "Failed to parse SHA-1 \"" << current_sha1 << "\" in " << filename;
- return -1;
- }
-
- if (memcmp(sha_so_far, parsed_sha, SHA_DIGEST_LENGTH) == 0) {
- // We have a match. Stop reading the partition; we'll return the data we've read so far.
- LOG(INFO) << "Partition read matched size " << current_size << " SHA-1 " << current_sha1;
- found = true;
- break;
}
}
- if (!found) {
- // Ran off the end of the list of (size, sha1) pairs without finding a match.
- LOG(ERROR) << "Contents of partition \"" << partition << "\" didn't match " << filename;
- return -1;
+ if (!check_backup) {
+ LOG(ERROR) << "Partition contents don't have the expected checksum";
+ return false;
}
- SHA1_Final(file->sha1, &sha_ctx);
-
- buffer.resize(offset);
- file->data = std::move(buffer);
+ if (LoadFileContents(Paths::Get().cache_temp_source(), out) &&
+ memcmp(out->sha1, expected_sha1, SHA_DIGEST_LENGTH) == 0) {
+ return true;
+ }
- return 0;
+ LOG(ERROR) << "Both of partition contents and backup don't have the expected checksum";
+ return false;
}
-int SaveFileContents(const std::string& filename, const FileContents* file) {
+bool SaveFileContents(const std::string& filename, const FileContents* file) {
android::base::unique_fd fd(
open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC | O_SYNC, S_IRUSR | S_IWUSR));
if (fd == -1) {
PLOG(ERROR) << "Failed to open \"" << filename << "\" for write";
- return -1;
+ return false;
}
if (!android::base::WriteFully(fd, file->data.data(), file->data.size())) {
PLOG(ERROR) << "Failed to write " << file->data.size() << " bytes of data to " << filename;
- return -1;
+ return false;
}
if (fsync(fd) != 0) {
PLOG(ERROR) << "Failed to fsync \"" << filename << "\"";
- return -1;
+ return false;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close \"" << filename << "\"";
- return -1;
+ return false;
}
- return 0;
+ return true;
}
-// Writes a memory buffer to 'target' partition, a string of the form
-// "EMMC:<partition_device>[:...]". The target name might contain multiple colons, but
-// WriteToPartition() only uses the first two and ignores the rest. Returns 0 on success.
-static int WriteToPartition(const unsigned char* data, size_t len, const std::string& target) {
- std::vector<std::string> pieces = android::base::Split(target, ":");
- if (pieces.size() < 2 || pieces[0] != "EMMC") {
- LOG(ERROR) << "WriteToPartition called with bad target \"" << target << "\"";
- return -1;
- }
-
+// Writes a memory buffer to 'target' Partition.
+static bool WriteBufferToPartition(const FileContents& file_contents, const Partition& partition) {
+ const unsigned char* data = file_contents.data.data();
+ size_t len = file_contents.data.size();
size_t start = 0;
bool success = false;
for (size_t attempt = 0; attempt < 2; ++attempt) {
- std::string partition = pieces[1];
- android::base::unique_fd fd(open(partition.c_str(), O_RDWR));
+ android::base::unique_fd fd(open(partition.name.c_str(), O_RDWR));
if (fd == -1) {
PLOG(ERROR) << "Failed to open \"" << partition << "\"";
- return -1;
+ return false;
}
if (TEMP_FAILURE_RETRY(lseek(fd, start, SEEK_SET)) == -1) {
PLOG(ERROR) << "Failed to seek to " << start << " on \"" << partition << "\"";
- return -1;
+ return false;
}
if (!android::base::WriteFully(fd, data + start, len - start)) {
PLOG(ERROR) << "Failed to write " << len - start << " bytes to \"" << partition << "\"";
- return -1;
+ return false;
}
if (fsync(fd) != 0) {
PLOG(ERROR) << "Failed to sync \"" << partition << "\"";
- return -1;
+ return false;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close \"" << partition << "\"";
- return -1;
+ return false;
}
- fd.reset(open(partition.c_str(), O_RDONLY));
+ fd.reset(open(partition.name.c_str(), O_RDONLY));
if (fd == -1) {
PLOG(ERROR) << "Failed to reopen \"" << partition << "\" for verification";
- return -1;
+ return false;
}
// Drop caches so our subsequent verification read won't just be reading the cache.
@@ -247,7 +183,7 @@ static int WriteToPartition(const unsigned char* data, size_t len, const std::st
// Verify.
if (TEMP_FAILURE_RETRY(lseek(fd, 0, SEEK_SET)) == -1) {
PLOG(ERROR) << "Failed to seek to 0 on " << partition;
- return -1;
+ return false;
}
unsigned char buffer[4096];
@@ -260,7 +196,7 @@ static int WriteToPartition(const unsigned char* data, size_t len, const std::st
if (!android::base::ReadFully(fd, buffer, to_read)) {
PLOG(ERROR) << "Failed to verify-read " << partition << " at " << p;
- return -1;
+ return false;
}
if (memcmp(buffer, data + p, to_read) != 0) {
@@ -278,18 +214,18 @@ static int WriteToPartition(const unsigned char* data, size_t len, const std::st
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close " << partition;
- return -1;
+ return false;
}
}
if (!success) {
LOG(ERROR) << "Failed to verify after all attempts";
- return -1;
+ return false;
}
sync();
- return 0;
+ return true;
}
int ParseSha1(const std::string& str, uint8_t* digest) {
@@ -317,44 +253,11 @@ int ParseSha1(const std::string& str, uint8_t* digest) {
return 0;
}
-// Searches a vector of SHA-1 strings for one matching the given SHA-1. Returns the index of the
-// match on success, or -1 if no match is found.
-static int FindMatchingPatch(const uint8_t* sha1, const std::vector<std::string>& patch_sha1s) {
- for (size_t i = 0; i < patch_sha1s.size(); ++i) {
- uint8_t patch_sha1[SHA_DIGEST_LENGTH];
- if (ParseSha1(patch_sha1s[i], patch_sha1) == 0 &&
- memcmp(patch_sha1, sha1, SHA_DIGEST_LENGTH) == 0) {
- return i;
- }
- }
- return -1;
-}
-
-int applypatch_check(const std::string& filename, const std::vector<std::string>& sha1s) {
- if (!android::base::StartsWith(filename, "EMMC:")) {
- return 1;
- }
-
- // The check will pass if LoadPartitionContents is successful, because the filename already
- // encodes the desired SHA-1s.
- FileContents file;
- if (LoadPartitionContents(filename, &file) != 0) {
- LOG(INFO) << "\"" << filename << "\" doesn't have any of expected SHA-1 sums; checking cache";
-
- // If the partition is corrupted, it might be because we were killed in the middle of patching
- // it. A copy should have been made in cache_temp_source. If that file exists and matches the
- // SHA-1 we're looking for, the check still passes.
- if (LoadFileContents(Paths::Get().cache_temp_source(), &file) != 0) {
- LOG(ERROR) << "Failed to load cache file";
- return 1;
- }
-
- if (FindMatchingPatch(file.sha1, sha1s) < 0) {
- LOG(ERROR) << "The cache bits don't match any SHA-1 for \"" << filename << "\"";
- return 1;
- }
- }
- return 0;
+bool PatchPartitionCheck(const Partition& target, const Partition& source) {
+ FileContents target_file;
+ FileContents source_file;
+ return (ReadPartitionToBuffer(target, &target_file, false) ||
+ ReadPartitionToBuffer(source, &source_file, true));
}
int ShowLicenses() {
@@ -362,124 +265,81 @@ int ShowLicenses() {
return 0;
}
-int applypatch(const char* source_filename, const char* target_filename,
- const char* target_sha1_str, size_t /* target_size */,
- const std::vector<std::string>& patch_sha1s,
- const std::vector<std::unique_ptr<Value>>& patch_data, const Value* bonus_data) {
- LOG(INFO) << "Patching " << source_filename;
+bool PatchPartition(const Partition& target, const Partition& source, const Value& patch,
+ const Value* bonus) {
+ LOG(INFO) << "Patching " << target.name;
- if (target_filename[0] == '-' && target_filename[1] == '\0') {
- target_filename = source_filename;
+ // We try to load and check against the target hash first.
+ FileContents target_file;
+ if (ReadPartitionToBuffer(target, &target_file, false)) {
+ // The early-exit case: the patch was already applied, this file has the desired hash, nothing
+ // for us to do.
+ LOG(INFO) << " already " << target.hash.substr(0, 8);
+ return true;
}
- if (strncmp(target_filename, "EMMC:", 5) != 0) {
- LOG(ERROR) << "Supporting patching EMMC targets only";
- return 1;
- }
-
- uint8_t target_sha1[SHA_DIGEST_LENGTH];
- if (ParseSha1(target_sha1_str, target_sha1) != 0) {
- LOG(ERROR) << "Failed to parse target SHA-1 \"" << target_sha1_str << "\"";
- return 1;
- }
-
- // We try to load the target file into the source_file object.
FileContents source_file;
- if (LoadFileContents(target_filename, &source_file) == 0) {
- if (memcmp(source_file.sha1, target_sha1, SHA_DIGEST_LENGTH) == 0) {
- // The early-exit case: the patch was already applied, this file has the desired hash, nothing
- // for us to do.
- LOG(INFO) << " already " << short_sha1(target_sha1);
- return 0;
- }
+ if (ReadPartitionToBuffer(source, &source_file, true)) {
+ return GenerateTarget(target, source_file, patch, bonus);
}
- if (source_file.data.empty() ||
- (target_filename != source_filename && strcmp(target_filename, source_filename) != 0)) {
- // Need to load the source file: either we failed to load the target file, or we did but it's
- // different from the expected.
- source_file.data.clear();
- LoadFileContents(source_filename, &source_file);
- }
-
- if (!source_file.data.empty()) {
- int to_use = FindMatchingPatch(source_file.sha1, patch_sha1s);
- if (to_use != -1) {
- return GenerateTarget(source_file, patch_data[to_use], target_filename, target_sha1,
- bonus_data);
- }
- }
+ LOG(ERROR) << "Failed to find any match";
+ return false;
+}
- LOG(INFO) << "Source file is bad; trying copy";
+bool FlashPartition(const Partition& partition, const std::string& source_filename) {
+ LOG(INFO) << "Flashing " << partition;
- FileContents copy_file;
- if (LoadFileContents(Paths::Get().cache_temp_source(), &copy_file) < 0) {
- LOG(ERROR) << "Failed to read copy file";
- return 1;
+ // We try to load and check against the target hash first.
+ FileContents target_file;
+ if (ReadPartitionToBuffer(partition, &target_file, false)) {
+ // The early-exit case: the patch was already applied, this file has the desired hash, nothing
+ // for us to do.
+ LOG(INFO) << " already " << partition.hash.substr(0, 8);
+ return true;
}
- int to_use = FindMatchingPatch(copy_file.sha1, patch_sha1s);
- if (to_use == -1) {
- LOG(ERROR) << "The copy on /cache doesn't match source SHA-1s either";
- return 1;
+ FileContents source_file;
+ if (!LoadFileContents(source_filename, &source_file)) {
+ LOG(ERROR) << "Failed to load source file";
+ return false;
}
- return GenerateTarget(copy_file, patch_data[to_use], target_filename, target_sha1, bonus_data);
-}
-
-int applypatch_flash(const char* source_filename, const char* target_filename,
- const char* target_sha1_str, size_t target_size) {
- LOG(INFO) << "Flashing " << target_filename;
-
- uint8_t target_sha1[SHA_DIGEST_LENGTH];
- if (ParseSha1(target_sha1_str, target_sha1) != 0) {
- LOG(ERROR) << "Failed to parse target SHA-1 \"" << target_sha1_str << "\"";
- return 1;
+ uint8_t expected_sha1[SHA_DIGEST_LENGTH];
+ if (ParseSha1(partition.hash, expected_sha1) != 0) {
+ LOG(ERROR) << "Failed to parse source hash \"" << partition.hash << "\"";
+ return false;
}
- std::vector<std::string> pieces = android::base::Split(target_filename, ":");
- if (pieces.size() != 4 || pieces[0] != "EMMC") {
- LOG(ERROR) << "Invalid target name \"" << target_filename << "\"";
- return 1;
+ if (memcmp(source_file.sha1, expected_sha1, SHA_DIGEST_LENGTH) != 0) {
+ // The source doesn't have desired checksum.
+ LOG(ERROR) << "source \"" << source_filename << "\" doesn't have expected SHA-1 sum";
+ LOG(ERROR) << "expected: " << partition.hash.substr(0, 8)
+ << ", found: " << short_sha1(source_file.sha1);
+ return false;
}
-
- // Load the target into the source_file object to see if already applied.
- FileContents source_file;
- if (LoadPartitionContents(target_filename, &source_file) == 0 &&
- memcmp(source_file.sha1, target_sha1, SHA_DIGEST_LENGTH) == 0) {
- // The early-exit case: the image was already applied, this partition has the desired hash,
- // nothing for us to do.
- LOG(INFO) << " already " << short_sha1(target_sha1);
- return 0;
- }
-
- if (LoadFileContents(source_filename, &source_file) == 0) {
- if (memcmp(source_file.sha1, target_sha1, SHA_DIGEST_LENGTH) != 0) {
- // The source doesn't have desired checksum.
- LOG(ERROR) << "source \"" << source_filename << "\" doesn't have expected SHA-1 sum";
- LOG(ERROR) << "expected: " << short_sha1(target_sha1)
- << ", found: " << short_sha1(source_file.sha1);
- return 1;
- }
+ if (!WriteBufferToPartition(source_file, partition)) {
+ LOG(ERROR) << "Failed to write to " << partition;
+ return false;
}
+ return true;
+}
- if (WriteToPartition(source_file.data.data(), target_size, target_filename) != 0) {
- LOG(ERROR) << "Failed to write copied data to " << target_filename;
- return 1;
+static bool GenerateTarget(const Partition& target, const FileContents& source_file,
+ const Value& patch, const Value* bonus_data) {
+ uint8_t expected_sha1[SHA_DIGEST_LENGTH];
+ if (ParseSha1(target.hash, expected_sha1) != 0) {
+ LOG(ERROR) << "Failed to parse target hash \"" << target.hash << "\"";
+ return false;
}
- return 0;
-}
-static int GenerateTarget(const FileContents& source_file, const std::unique_ptr<Value>& patch,
- const std::string& target_filename,
- const uint8_t target_sha1[SHA_DIGEST_LENGTH], const Value* bonus_data) {
- if (patch->type != Value::Type::BLOB) {
+ if (patch.type != Value::Type::BLOB) {
LOG(ERROR) << "patch is not a blob";
- return 1;
+ return false;
}
- const char* header = &patch->data[0];
- size_t header_bytes_read = patch->data.size();
+ const char* header = patch.data.data();
+ size_t header_bytes_read = patch.data.size();
bool use_bsdiff = false;
if (header_bytes_read >= 8 && memcmp(header, "BSDIFF40", 8) == 0) {
use_bsdiff = true;
@@ -487,57 +347,53 @@ static int GenerateTarget(const FileContents& source_file, const std::unique_ptr
use_bsdiff = false;
} else {
LOG(ERROR) << "Unknown patch file format";
- return 1;
+ return false;
}
- CHECK(android::base::StartsWith(target_filename, "EMMC:"));
-
// We write the original source to cache, in case the partition write is interrupted.
if (!CheckAndFreeSpaceOnCache(source_file.data.size())) {
LOG(ERROR) << "Not enough free space on /cache";
- return 1;
+ return false;
}
- if (SaveFileContents(Paths::Get().cache_temp_source(), &source_file) < 0) {
+ if (!SaveFileContents(Paths::Get().cache_temp_source(), &source_file)) {
LOG(ERROR) << "Failed to back up source file";
- return 1;
+ return false;
}
// We store the decoded output in memory.
- std::string memory_sink_str; // Don't need to reserve space.
+ FileContents patched;
SHA_CTX ctx;
SHA1_Init(&ctx);
- SinkFn sink = [&memory_sink_str, &ctx](const unsigned char* data, size_t len) {
+ SinkFn sink = [&patched, &ctx](const unsigned char* data, size_t len) {
SHA1_Update(&ctx, data, len);
- memory_sink_str.append(reinterpret_cast<const char*>(data), len);
+ patched.data.insert(patched.data.end(), data, data + len);
return len;
};
int result;
if (use_bsdiff) {
- result = ApplyBSDiffPatch(source_file.data.data(), source_file.data.size(), *patch, 0, sink);
+ result = ApplyBSDiffPatch(source_file.data.data(), source_file.data.size(), patch, 0, sink);
} else {
result =
- ApplyImagePatch(source_file.data.data(), source_file.data.size(), *patch, sink, bonus_data);
+ ApplyImagePatch(source_file.data.data(), source_file.data.size(), patch, sink, bonus_data);
}
if (result != 0) {
LOG(ERROR) << "Failed to apply the patch: " << result;
- return 1;
+ return false;
}
- uint8_t current_target_sha1[SHA_DIGEST_LENGTH];
- SHA1_Final(current_target_sha1, &ctx);
- if (memcmp(current_target_sha1, target_sha1, SHA_DIGEST_LENGTH) != 0) {
- LOG(ERROR) << "Patching did not produce the expected SHA-1 of " << short_sha1(target_sha1);
+ SHA1_Final(patched.sha1, &ctx);
+ if (memcmp(patched.sha1, expected_sha1, SHA_DIGEST_LENGTH) != 0) {
+ LOG(ERROR) << "Patching did not produce the expected SHA-1 of " << short_sha1(expected_sha1);
- LOG(ERROR) << "target size " << memory_sink_str.size() << " SHA-1 "
- << short_sha1(current_target_sha1);
+ LOG(ERROR) << "target size " << patched.data.size() << " SHA-1 " << short_sha1(patched.sha1);
LOG(ERROR) << "source size " << source_file.data.size() << " SHA-1 "
<< short_sha1(source_file.sha1);
uint8_t patch_digest[SHA_DIGEST_LENGTH];
- SHA1(reinterpret_cast<const uint8_t*>(patch->data.data()), patch->data.size(), patch_digest);
- LOG(ERROR) << "patch size " << patch->data.size() << " SHA-1 " << short_sha1(patch_digest);
+ SHA1(reinterpret_cast<const uint8_t*>(patch.data.data()), patch.data.size(), patch_digest);
+ LOG(ERROR) << "patch size " << patch.data.size() << " SHA-1 " << short_sha1(patch_digest);
if (bonus_data != nullptr) {
uint8_t bonus_digest[SHA_DIGEST_LENGTH];
@@ -547,21 +403,53 @@ static int GenerateTarget(const FileContents& source_file, const std::unique_ptr
<< short_sha1(bonus_digest);
}
- return 1;
- } else {
- LOG(INFO) << " now " << short_sha1(target_sha1);
+ return false;
}
+ LOG(INFO) << " now " << short_sha1(expected_sha1);
+
// Write back the temp file to the partition.
- if (WriteToPartition(reinterpret_cast<const unsigned char*>(memory_sink_str.c_str()),
- memory_sink_str.size(), target_filename) != 0) {
- LOG(ERROR) << "Failed to write patched data to " << target_filename;
- return 1;
+ if (!WriteBufferToPartition(patched, target)) {
+ LOG(ERROR) << "Failed to write patched data to " << target.name;
+ return false;
}
// Delete the backup copy of the source.
unlink(Paths::Get().cache_temp_source().c_str());
// Success!
- return 0;
+ return true;
+}
+
+bool CheckPartition(const Partition& partition) {
+ FileContents target_file;
+ return ReadPartitionToBuffer(partition, &target_file, false);
+}
+
+Partition Partition::Parse(const std::string& input_str, std::string* err) {
+ std::vector<std::string> pieces = android::base::Split(input_str, ":");
+ if (pieces.size() != 4 || pieces[0] != "EMMC") {
+ *err = "Invalid number of tokens or non-eMMC target";
+ return {};
+ }
+
+ size_t size;
+ if (!android::base::ParseUint(pieces[2], &size) || size == 0) {
+ *err = "Failed to parse \"" + pieces[2] + "\" as byte count";
+ return {};
+ }
+
+ return Partition(pieces[1], size, pieces[3]);
+}
+
+std::string Partition::ToString() const {
+ if (*this) {
+ return "EMMC:"s + name + ":" + std::to_string(size) + ":" + hash;
+ }
+ return "<invalid-partition>";
+}
+
+std::ostream& operator<<(std::ostream& os, const Partition& partition) {
+ os << partition.ToString();
+ return os;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 22:37:52 +0100