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Merge tag 'android-10.0.0_r25' into aosp10-4

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Android 10.0.0 release 25
This commit is contained in:
bigbiff
2020-03-23 09:56:16 -04:00
parent 901141c2eb 79fa6bdf6b
commit 26d5d5f0b9
785 changed files with 22968 additions and 9422 deletions
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661
applypatch/applypatch.cpp
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@@ -23,35 +23,33 @@
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <sys/types.h>
#include <unistd.h>
#include <algorithm>
#include <functional>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <openssl/sha.h>
#include "bmlutils/bmlutils.h"
#include "mtdutils/mtdutils.h"
#include "edify/expr.h"
#include "otafault/ota_io.h"
#include "otautil/cache_location.h"
#include "otautil/paths.h"
#include "otautil/print_sha1.h"
static int LoadPartitionContents(const std::string& filename, FileContents* file);
static size_t FileSink(const unsigned char* data, size_t len, int fd);
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;
<<<<<<< HEAD
static bool mtd_partitions_scanned = false;
// Read a file into memory; store the file contents and associated metadata in *file.
@@ -64,30 +62,29 @@ int LoadFileContents(const char* filename, FileContents* file) {
strncmp(filename, "BML:", 4) == 0) {
return LoadPartitionContents(filename, file);
}
=======
static bool GenerateTarget(const Partition& target, const FileContents& source_file,
const Value& patch, const Value* bonus_data);
>>>>>>> android-10.0.0_r25
struct stat sb;
if (stat(filename, &sb) == -1) {
printf("failed to stat \"%s\": %s\n", filename, strerror(errno));
return -1;
bool LoadFileContents(const std::string& filename, FileContents* file) {
// No longer allow loading contents from eMMC partitions.
if (android::base::StartsWith(filename, "EMMC:")) {
return false;
}
std::vector<unsigned char> data(sb.st_size);
unique_file f(ota_fopen(filename, "rb"));
if (!f) {
printf("failed to open \"%s\": %s\n", filename, strerror(errno));
return -1;
std::string data;
if (!android::base::ReadFileToString(filename, &data)) {
PLOG(ERROR) << "Failed to read \"" << filename << "\"";
return false;
}
size_t bytes_read = ota_fread(data.data(), 1, data.size(), f.get());
if (bytes_read != data.size()) {
printf("short read of \"%s\" (%zu bytes of %zu)\n", filename, bytes_read, data.size());
return -1;
}
file->data = std::move(data);
file->data = std::vector<unsigned char>(data.begin(), data.end());
SHA1(file->data.data(), file->data.size(), file->sha1);
return 0;
return true;
}
<<<<<<< HEAD
// Load 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
@@ -142,30 +139,32 @@ static int LoadPartitionContents(const std::string& filename, FileContents* file
if (!dev) {
printf("failed to open emmc partition \"%s\": %s\n", partition, strerror(errno));
return -1;
=======
// 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;
>>>>>>> android-10.0.0_r25
}
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);
unsigned char* buffer_ptr = buffer.data();
size_t buffer_size = 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).
size_t next = current_size - buffer_size;
if (next > 0) {
size_t read = ota_fread(buffer_ptr, 1, next, dev.get());
if (next != read) {
printf("short read (%zu bytes of %zu) for partition \"%s\"\n", read, next, partition);
return -1;
android::base::unique_fd dev(open(partition.name.c_str(), O_RDONLY));
if (dev == -1) {
PLOG(ERROR) << "Failed to open eMMC partition \"" << partition << "\"";
} 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;
}
<<<<<<< HEAD
SHA1_Update(&sha_ctx, buffer_ptr, read);
buffer_size += read;
buffer_ptr += read;
@@ -197,47 +196,39 @@ static int LoadPartitionContents(const std::string& filename, FileContents* file
printf("partition read matched size %zu SHA-1 %s\n", current_size, current_sha1.c_str());
found = true;
break;
=======
>>>>>>> android-10.0.0_r25
}
}
if (!found) {
// Ran off the end of the list of (size, sha1) pairs without finding a match.
printf("contents of partition \"%s\" didn't match %s\n", partition, filename.c_str());
return -1;
if (!check_backup) {
LOG(ERROR) << "Partition contents don't have the expected checksum";
return false;
}
SHA1_Final(file->sha1, &sha_ctx);
if (LoadFileContents(Paths::Get().cache_temp_source(), out) &&
memcmp(out->sha1, expected_sha1, SHA_DIGEST_LENGTH) == 0) {
return true;
}
buffer.resize(buffer_size);
file->data = std::move(buffer);
return 0;
LOG(ERROR) << "Both of partition contents and backup don't have the expected checksum";
return false;
}
// Save the contents of the given FileContents object under the given
// filename. Return 0 on success.
int SaveFileContents(const char* filename, const FileContents* file) {
unique_fd fd(ota_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC, S_IRUSR | S_IWUSR));
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) {
printf("failed to open \"%s\" for write: %s\n", filename, strerror(errno));
return -1;
PLOG(ERROR) << "Failed to open \"" << filename << "\" for write";
return false;
}
size_t bytes_written = FileSink(file->data.data(), file->data.size(), fd);
if (bytes_written != file->data.size()) {
printf("short write of \"%s\" (%zd bytes of %zu): %s\n", filename, bytes_written,
file->data.size(), strerror(errno));
return -1;
}
if (ota_fsync(fd) != 0) {
printf("fsync of \"%s\" failed: %s\n", filename, strerror(errno));
return -1;
}
if (ota_close(fd) != 0) {
printf("close of \"%s\" failed: %s\n", filename, strerror(errno));
return -1;
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 false;
}
<<<<<<< HEAD
return 0;
}
@@ -264,10 +255,78 @@ int WriteToPartition(const unsigned char* data, size_t len, const std::string& t
} else {
printf("WriteToPartition called with bad target (%s)\n", target.c_str());
return -1;
=======
if (fsync(fd) != 0) {
PLOG(ERROR) << "Failed to fsync \"" << filename << "\"";
return false;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close \"" << filename << "\"";
return false;
}
return true;
}
// 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) {
android::base::unique_fd fd(open(partition.name.c_str(), O_RDWR));
if (fd == -1) {
PLOG(ERROR) << "Failed to open \"" << partition << "\"";
return false;
}
if (TEMP_FAILURE_RETRY(lseek(fd, start, SEEK_SET)) == -1) {
PLOG(ERROR) << "Failed to seek to " << start << " on \"" << partition << "\"";
return false;
}
if (!android::base::WriteFully(fd, data + start, len - start)) {
PLOG(ERROR) << "Failed to write " << len - start << " bytes to \"" << partition << "\"";
return false;
}
if (fsync(fd) != 0) {
PLOG(ERROR) << "Failed to sync \"" << partition << "\"";
return false;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close \"" << partition << "\"";
return false;
}
fd.reset(open(partition.name.c_str(), O_RDONLY));
if (fd == -1) {
PLOG(ERROR) << "Failed to reopen \"" << partition << "\" for verification";
return false;
}
// Drop caches so our subsequent verification read won't just be reading the cache.
sync();
std::string drop_cache = "/proc/sys/vm/drop_caches";
if (!android::base::WriteStringToFile("3\n", drop_cache)) {
PLOG(ERROR) << "Failed to write to " << drop_cache;
} else {
LOG(INFO) << " caches dropped";
}
sleep(1);
// Verify.
if (TEMP_FAILURE_RETRY(lseek(fd, 0, SEEK_SET)) == -1) {
PLOG(ERROR) << "Failed to seek to 0 on " << partition;
return false;
>>>>>>> android-10.0.0_r25
}
const char* partition = pieces[1].c_str();
<<<<<<< HEAD
if (pieces[0] == "BML") {
if (strcmp(partition, "boot") == 0) {
partition = BOARD_BML_BOOT;
@@ -482,290 +541,264 @@ static int FindMatchingPatch(uint8_t* sha1, const std::vector<std::string>& patc
}
}
return -1;
}
=======
if (!android::base::ReadFully(fd, buffer, to_read)) {
PLOG(ERROR) << "Failed to verify-read " << partition << " at " << p;
return false;
}
// Returns 0 if the contents of the file (argv[2]) or the cached file
// match any of the sha1's on the command line (argv[3:]). Returns
// nonzero otherwise.
int applypatch_check(const char* filename, const std::vector<std::string>& patch_sha1_str) {
FileContents file;
// It's okay to specify no sha1s; the check will pass if the
// LoadFileContents is successful. (Useful for reading
// partitions, where the filename encodes the sha1s; no need to
// check them twice.)
if (LoadFileContents(filename, &file) != 0 ||
(!patch_sha1_str.empty() && FindMatchingPatch(file.sha1, patch_sha1_str) < 0)) {
printf("file \"%s\" doesn't have any of expected sha1 sums; checking cache\n", filename);
// If the source file is missing or corrupted, it might be because we were killed in the middle
// of patching it. A copy of it should have been made in cache_temp_source. If that file
// exists and matches the sha1 we're looking for, the check still passes.
if (LoadFileContents(CacheLocation::location().cache_temp_source().c_str(), &file) != 0) {
printf("failed to load cache file\n");
return 1;
if (memcmp(buffer, data + p, to_read) != 0) {
LOG(ERROR) << "Verification failed starting at " << p;
start = p;
break;
}
}
if (FindMatchingPatch(file.sha1, patch_sha1_str) < 0) {
printf("cache bits don't match any sha1 for \"%s\"\n", filename);
return 1;
if (start == len) {
LOG(INFO) << "Verification read succeeded (attempt " << attempt + 1 << ")";
success = true;
break;
}
if (close(fd.release()) != 0) {
PLOG(ERROR) << "Failed to close " << partition;
return false;
}
}
if (!success) {
LOG(ERROR) << "Failed to verify after all attempts";
return false;
}
sync();
return true;
>>>>>>> android-10.0.0_r25
}
int ParseSha1(const std::string& str, uint8_t* digest) {
const char* ps = str.c_str();
uint8_t* pd = digest;
for (int i = 0; i < SHA_DIGEST_LENGTH * 2; ++i, ++ps) {
int digit;
if (*ps >= '0' && *ps <= '9') {
digit = *ps - '0';
} else if (*ps >= 'a' && *ps <= 'f') {
digit = *ps - 'a' + 10;
} else if (*ps >= 'A' && *ps <= 'F') {
digit = *ps - 'A' + 10;
} else {
return -1;
}
if (i % 2 == 0) {
*pd = digit << 4;
} else {
*pd |= digit;
++pd;
}
}
if (*ps != '\0') 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() {
ShowBSDiffLicense();
return 0;
}
static size_t FileSink(const unsigned char* data, size_t len, int fd) {
size_t done = 0;
while (done < len) {
ssize_t wrote = TEMP_FAILURE_RETRY(ota_write(fd, data + done, len - done));
if (wrote == -1) {
printf("error writing %zd bytes: %s\n", (len - done), strerror(errno));
return done;
}
done += wrote;
}
return done;
}
// Return the amount of free space (in bytes) on the filesystem
// containing filename. filename must exist. Return -1 on error.
size_t FreeSpaceForFile(const char* filename) {
struct statfs sf;
if (statfs(filename, &sf) != 0) {
printf("failed to statfs %s: %s\n", filename, strerror(errno));
return -1;
}
return sf.f_bsize * sf.f_bavail;
}
int CacheSizeCheck(size_t bytes) {
if (MakeFreeSpaceOnCache(bytes) < 0) {
printf("unable to make %zu bytes available on /cache\n", bytes);
return 1;
}
return 0;
}
// This function applies binary patches to EMMC target files in a way that is safe (the original
// file is not touched until we have the desired replacement for it) and idempotent (it's okay to
// run this program multiple times).
//
// - If the SHA-1 hash of <target_filename> is <target_sha1_string>, does nothing and exits
// successfully.
//
// - Otherwise, if the SHA-1 hash of <source_filename> is one of the entries in <patch_sha1_str>,
// the corresponding patch from <patch_data> (which must be a VAL_BLOB) is applied to produce a
// new file (the type of patch is automatically detected from the blob data). If that new file
// has SHA-1 hash <target_sha1_str>, moves it to replace <target_filename>, and exits
// successfully. Note that if <source_filename> and <target_filename> are not the same,
// <source_filename> is NOT deleted on success. <target_filename> may be the string "-" to mean
// "the same as <source_filename>".
//
// - Otherwise, or if any error is encountered, exits with non-zero status.
//
// <source_filename> must refer to an EMMC partition to read the source data. See the comments for
// the LoadPartitionContents() function above for the format of such a filename. <target_size> has
// become obsolete since we have dropped the support for patching non-EMMC targets (EMMC targets
// have the size embedded in the filename).
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_sha1_str,
const std::vector<std::unique_ptr<Value>>& patch_data, const Value* bonus_data) {
printf("patch %s: ", source_filename);
if (target_filename[0] == '-' && target_filename[1] == '\0') {
target_filename = source_filename;
}
if (strncmp(target_filename, "EMMC:", 5) != 0) {
printf("Supporting patching EMMC targets only.\n");
return 1;
}
uint8_t target_sha1[SHA_DIGEST_LENGTH];
if (ParseSha1(target_sha1_str, target_sha1) != 0) {
printf("failed to parse tgt-sha1 \"%s\"\n", 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.
printf("already %s\n", short_sha1(target_sha1).c_str());
return 0;
}
}
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_sha1_str);
if (to_use != -1) {
return GenerateTarget(source_file, patch_data[to_use], target_filename, target_sha1,
bonus_data);
}
}
printf("source file is bad; trying copy\n");
FileContents copy_file;
if (LoadFileContents(CacheLocation::location().cache_temp_source().c_str(), &copy_file) < 0) {
printf("failed to read copy file\n");
return 1;
}
int to_use = FindMatchingPatch(copy_file.sha1, patch_sha1_str);
if (to_use == -1) {
printf("copy file doesn't match source SHA-1s either\n");
return 1;
}
return GenerateTarget(copy_file, patch_data[to_use], target_filename, target_sha1, bonus_data);
}
/*
* This function flashes a given image to the target partition. It verifies
* the target cheksum first, and will return if target has the desired hash.
* It checks the checksum of the given source image before flashing, and
* verifies the target partition afterwards. The function is idempotent.
* Returns zero on success.
*/
int applypatch_flash(const char* source_filename, const char* target_filename,
const char* target_sha1_str, size_t target_size) {
printf("flash %s: ", target_filename);
uint8_t target_sha1[SHA_DIGEST_LENGTH];
if (ParseSha1(target_sha1_str, target_sha1) != 0) {
printf("failed to parse tgt-sha1 \"%s\"\n", target_sha1_str);
return 1;
}
std::string target_str(target_filename);
std::vector<std::string> pieces = android::base::Split(target_str, ":");
if (pieces.size() != 2 || pieces[0] != "EMMC") {
printf("invalid target name \"%s\"", target_filename);
return 1;
}
// Load the target into the source_file object to see if already applied.
pieces.push_back(std::to_string(target_size));
pieces.push_back(target_sha1_str);
std::string fullname = android::base::Join(pieces, ':');
FileContents source_file;
if (LoadPartitionContents(fullname, &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.
printf("already %s\n", short_sha1(target_sha1).c_str());
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.
printf("source \"%s\" doesn't have expected sha1 sum\n", source_filename);
printf("expected: %s, found: %s\n", short_sha1(target_sha1).c_str(),
short_sha1(source_file.sha1).c_str());
return 1;
}
}
if (WriteToPartition(source_file.data.data(), target_size, target_filename) != 0) {
printf("write of copied data to %s failed\n", target_filename);
return 1;
}
ShowBSDiffLicense();
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 != VAL_BLOB) {
printf("patch is not a blob\n");
return 1;
bool PatchPartition(const Partition& target, const Partition& source, const Value& patch,
const Value* bonus) {
LOG(INFO) << "Patching " << target.name;
// 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;
}
const char* header = &patch->data[0];
size_t header_bytes_read = patch->data.size();
FileContents source_file;
if (ReadPartitionToBuffer(source, &source_file, true)) {
return GenerateTarget(target, source_file, patch, bonus);
}
LOG(ERROR) << "Failed to find any match";
return false;
}
bool FlashPartition(const Partition& partition, const std::string& source_filename) {
LOG(INFO) << "Flashing " << partition;
// 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;
}
FileContents source_file;
if (!LoadFileContents(source_filename, &source_file)) {
LOG(ERROR) << "Failed to load source file";
return false;
}
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;
}
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;
}
if (!WriteBufferToPartition(source_file, partition)) {
LOG(ERROR) << "Failed to write to " << partition;
return false;
}
return true;
}
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;
}
if (patch.type != Value::Type::BLOB) {
LOG(ERROR) << "patch is not a blob";
return false;
}
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;
} else if (header_bytes_read >= 8 && memcmp(header, "IMGDIFF2", 8) == 0) {
use_bsdiff = false;
} else {
printf("Unknown patch file format\n");
return 1;
LOG(ERROR) << "Unknown patch file format";
return false;
}
CHECK(android::base::StartsWith(target_filename, "EMMC:"));
// We still write the original source to cache, in case the partition write is interrupted.
if (MakeFreeSpaceOnCache(source_file.data.size()) < 0) {
printf("not enough free space on /cache\n");
return 1;
// 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 false;
}
if (SaveFileContents(CacheLocation::location().cache_temp_source().c_str(), &source_file) < 0) {
printf("failed to back up source file\n");
return 1;
if (!SaveFileContents(Paths::Get().cache_temp_source(), &source_file)) {
LOG(ERROR) << "Failed to back up source file";
return false;
}
// We store the decoded output in memory.
std::string memory_sink_str; // Don't need to reserve space.
SinkFn sink = [&memory_sink_str](const unsigned char* data, size_t len) {
memory_sink_str.append(reinterpret_cast<const char*>(data), len);
FileContents patched;
SHA_CTX ctx;
SHA1_Init(&ctx);
SinkFn sink = [&patched, &ctx](const unsigned char* data, size_t len) {
SHA1_Update(&ctx, data, len);
patched.data.insert(patched.data.end(), data, data + len);
return len;
};
SHA_CTX ctx;
SHA1_Init(&ctx);
int result;
if (use_bsdiff) {
result =
ApplyBSDiffPatch(source_file.data.data(), source_file.data.size(), *patch, 0, sink, &ctx);
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, &ctx,
bonus_data);
result =
ApplyImagePatch(source_file.data.data(), source_file.data.size(), patch, sink, bonus_data);
}
if (result != 0) {
printf("applying patch failed\n");
return 1;
LOG(ERROR) << "Failed to apply the patch: " << result;
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) {
printf("patch did not produce expected sha1\n");
return 1;
} else {
printf("now %s\n", short_sha1(target_sha1).c_str());
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 " << 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);
if (bonus_data != nullptr) {
uint8_t bonus_digest[SHA_DIGEST_LENGTH];
SHA1(reinterpret_cast<const uint8_t*>(bonus_data->data.data()), bonus_data->data.size(),
bonus_digest);
LOG(ERROR) << "bonus size " << bonus_data->data.size() << " SHA-1 "
<< short_sha1(bonus_digest);
}
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) {
printf("write of patched data to %s failed\n", target_filename.c_str());
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(CacheLocation::location().cache_temp_source().c_str());
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;
}