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-rw-r--r--uncrypt/uncrypt.cpp177
1 files changed, 86 insertions, 91 deletions
diff --git a/uncrypt/uncrypt.cpp b/uncrypt/uncrypt.cpp
index c73107cca..21db29026 100644
--- a/uncrypt/uncrypt.cpp
+++ b/uncrypt/uncrypt.cpp
@@ -109,17 +109,13 @@
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
+#include <android-base/unique_fd.h>
#include <bootloader_message/bootloader_message.h>
#include <cutils/android_reboot.h>
#include <cutils/properties.h>
#include <cutils/sockets.h>
#include <fs_mgr.h>
-#define LOG_TAG "uncrypt"
-#include <log/log.h>
-
-#include "unique_fd.h"
-
#define WINDOW_SIZE 5
// uncrypt provides three services: SETUP_BCB, CLEAR_BCB and UNCRYPT.
@@ -141,11 +137,11 @@ static struct fstab* fstab = nullptr;
static int write_at_offset(unsigned char* buffer, size_t size, int wfd, off64_t offset) {
if (TEMP_FAILURE_RETRY(lseek64(wfd, offset, SEEK_SET)) == -1) {
- ALOGE("error seeking to offset %" PRId64 ": %s", offset, strerror(errno));
+ PLOG(ERROR) << "error seeking to offset " << offset;
return -1;
}
if (!android::base::WriteFully(wfd, buffer, size)) {
- ALOGE("error writing offset %" PRId64 ": %s", offset, strerror(errno));
+ PLOG(ERROR) << "error writing offset " << offset;
return -1;
}
return 0;
@@ -169,13 +165,13 @@ static struct fstab* read_fstab() {
// The fstab path is always "/fstab.${ro.hardware}".
char fstab_path[PATH_MAX+1] = "/fstab.";
if (!property_get("ro.hardware", fstab_path+strlen(fstab_path), "")) {
- ALOGE("failed to get ro.hardware");
+ LOG(ERROR) << "failed to get ro.hardware";
return NULL;
}
fstab = fs_mgr_read_fstab(fstab_path);
if (!fstab) {
- ALOGE("failed to read %s", fstab_path);
+ LOG(ERROR) << "failed to read " << fstab_path;
return NULL;
}
@@ -221,7 +217,7 @@ static bool find_uncrypt_package(const std::string& uncrypt_path_file, std::stri
CHECK(package_name != nullptr);
std::string uncrypt_path;
if (!android::base::ReadFileToString(uncrypt_path_file, &uncrypt_path)) {
- ALOGE("failed to open \"%s\": %s", uncrypt_path_file.c_str(), strerror(errno));
+ PLOG(ERROR) << "failed to open \"" << uncrypt_path_file << "\"";
return false;
}
@@ -234,39 +230,41 @@ static int produce_block_map(const char* path, const char* map_file, const char*
bool encrypted, int socket) {
std::string err;
if (!android::base::RemoveFileIfExists(map_file, &err)) {
- ALOGE("failed to remove the existing map file %s: %s", map_file, err.c_str());
+ LOG(ERROR) << "failed to remove the existing map file " << map_file << ": " << err;
return -1;
}
std::string tmp_map_file = std::string(map_file) + ".tmp";
- unique_fd mapfd(open(tmp_map_file.c_str(), O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR));
- if (!mapfd) {
- ALOGE("failed to open %s: %s\n", tmp_map_file.c_str(), strerror(errno));
+ android::base::unique_fd mapfd(open(tmp_map_file.c_str(),
+ O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR));
+ if (mapfd == -1) {
+ PLOG(ERROR) << "failed to open " << tmp_map_file;
return -1;
}
// Make sure we can write to the socket.
if (!write_status_to_socket(0, socket)) {
- ALOGE("failed to write to socket %d\n", socket);
+ LOG(ERROR) << "failed to write to socket " << socket;
return -1;
}
struct stat sb;
if (stat(path, &sb) != 0) {
- ALOGE("failed to stat %s", path);
+ LOG(ERROR) << "failed to stat " << path;
return -1;
}
- ALOGI(" block size: %ld bytes", static_cast<long>(sb.st_blksize));
+ LOG(INFO) << " block size: " << sb.st_blksize << " bytes";
int blocks = ((sb.st_size-1) / sb.st_blksize) + 1;
- ALOGI(" file size: %" PRId64 " bytes, %d blocks", sb.st_size, blocks);
+ LOG(INFO) << " file size: " << sb.st_size << " bytes, " << blocks << " blocks";
std::vector<int> ranges;
- std::string s = android::base::StringPrintf("%s\n%" PRId64 " %ld\n",
- blk_dev, sb.st_size, static_cast<long>(sb.st_blksize));
- if (!android::base::WriteStringToFd(s, mapfd.get())) {
- ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno));
+ std::string s = android::base::StringPrintf("%s\n%" PRId64 " %" PRId64 "\n",
+ blk_dev, static_cast<int64_t>(sb.st_size),
+ static_cast<int64_t>(sb.st_blksize));
+ if (!android::base::WriteStringToFd(s, mapfd)) {
+ PLOG(ERROR) << "failed to write " << tmp_map_file;
return -1;
}
@@ -277,17 +275,17 @@ static int produce_block_map(const char* path, const char* map_file, const char*
int head_block = 0;
int head = 0, tail = 0;
- unique_fd fd(open(path, O_RDONLY));
- if (!fd) {
- ALOGE("failed to open %s for reading: %s", path, strerror(errno));
+ android::base::unique_fd fd(open(path, O_RDONLY));
+ if (fd == -1) {
+ PLOG(ERROR) << "failed to open " << path << " for reading";
return -1;
}
- unique_fd wfd(-1);
+ android::base::unique_fd wfd;
if (encrypted) {
- wfd = open(blk_dev, O_WRONLY);
- if (!wfd) {
- ALOGE("failed to open fd for writing: %s", strerror(errno));
+ wfd.reset(open(blk_dev, O_WRONLY));
+ if (wfd == -1) {
+ PLOG(ERROR) << "failed to open " << blk_dev << " for writing";
return -1;
}
}
@@ -305,14 +303,14 @@ static int produce_block_map(const char* path, const char* map_file, const char*
if ((tail+1) % WINDOW_SIZE == head) {
// write out head buffer
int block = head_block;
- if (ioctl(fd.get(), FIBMAP, &block) != 0) {
- ALOGE("failed to find block %d", head_block);
+ if (ioctl(fd, FIBMAP, &block) != 0) {
+ LOG(ERROR) << "failed to find block " << head_block;
return -1;
}
add_block_to_ranges(ranges, block);
if (encrypted) {
- if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd.get(),
- static_cast<off64_t>(sb.st_blksize) * block) != 0) {
+ if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd,
+ static_cast<off64_t>(sb.st_blksize) * block) != 0) {
return -1;
}
}
@@ -324,8 +322,8 @@ static int produce_block_map(const char* path, const char* map_file, const char*
if (encrypted) {
size_t to_read = static_cast<size_t>(
std::min(static_cast<off64_t>(sb.st_blksize), sb.st_size - pos));
- if (!android::base::ReadFully(fd.get(), buffers[tail].data(), to_read)) {
- ALOGE("failed to read: %s", strerror(errno));
+ if (!android::base::ReadFully(fd, buffers[tail].data(), to_read)) {
+ PLOG(ERROR) << "failed to read " << path;
return -1;
}
pos += to_read;
@@ -341,14 +339,14 @@ static int produce_block_map(const char* path, const char* map_file, const char*
while (head != tail) {
// write out head buffer
int block = head_block;
- if (ioctl(fd.get(), FIBMAP, &block) != 0) {
- ALOGE("failed to find block %d", head_block);
+ if (ioctl(fd, FIBMAP, &block) != 0) {
+ LOG(ERROR) << "failed to find block " << head_block;
return -1;
}
add_block_to_ranges(ranges, block);
if (encrypted) {
- if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd.get(),
- static_cast<off64_t>(sb.st_blksize) * block) != 0) {
+ if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd,
+ static_cast<off64_t>(sb.st_blksize) * block) != 0) {
return -1;
}
}
@@ -357,72 +355,69 @@ static int produce_block_map(const char* path, const char* map_file, const char*
}
if (!android::base::WriteStringToFd(
- android::base::StringPrintf("%zu\n", ranges.size() / 2), mapfd.get())) {
- ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno));
+ android::base::StringPrintf("%zu\n", ranges.size() / 2), mapfd)) {
+ PLOG(ERROR) << "failed to write " << tmp_map_file;
return -1;
}
for (size_t i = 0; i < ranges.size(); i += 2) {
if (!android::base::WriteStringToFd(
- android::base::StringPrintf("%d %d\n", ranges[i], ranges[i+1]), mapfd.get())) {
- ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno));
+ android::base::StringPrintf("%d %d\n", ranges[i], ranges[i+1]), mapfd)) {
+ PLOG(ERROR) << "failed to write " << tmp_map_file;
return -1;
}
}
- if (fsync(mapfd.get()) == -1) {
- ALOGE("failed to fsync \"%s\": %s", tmp_map_file.c_str(), strerror(errno));
+ if (fsync(mapfd) == -1) {
+ PLOG(ERROR) << "failed to fsync \"" << tmp_map_file << "\"";
return -1;
}
- if (close(mapfd.get()) == -1) {
- ALOGE("failed to close %s: %s", tmp_map_file.c_str(), strerror(errno));
+ if (close(mapfd.release()) == -1) {
+ PLOG(ERROR) << "failed to close " << tmp_map_file;
return -1;
}
- mapfd = -1;
if (encrypted) {
- if (fsync(wfd.get()) == -1) {
- ALOGE("failed to fsync \"%s\": %s", blk_dev, strerror(errno));
+ if (fsync(wfd) == -1) {
+ PLOG(ERROR) << "failed to fsync \"" << blk_dev << "\"";
return -1;
}
- if (close(wfd.get()) == -1) {
- ALOGE("failed to close %s: %s", blk_dev, strerror(errno));
+ if (close(wfd.release()) == -1) {
+ PLOG(ERROR) << "failed to close " << blk_dev;
return -1;
}
- wfd = -1;
}
if (rename(tmp_map_file.c_str(), map_file) == -1) {
- ALOGE("failed to rename %s to %s: %s", tmp_map_file.c_str(), map_file, strerror(errno));
+ PLOG(ERROR) << "failed to rename " << tmp_map_file << " to " << map_file;
return -1;
}
// Sync dir to make rename() result written to disk.
std::string file_name = map_file;
std::string dir_name = dirname(&file_name[0]);
- unique_fd dfd(open(dir_name.c_str(), O_RDONLY | O_DIRECTORY));
- if (!dfd) {
- ALOGE("failed to open dir %s: %s", dir_name.c_str(), strerror(errno));
+ android::base::unique_fd dfd(open(dir_name.c_str(), O_RDONLY | O_DIRECTORY));
+ if (dfd == -1) {
+ PLOG(ERROR) << "failed to open dir " << dir_name;
return -1;
}
- if (fsync(dfd.get()) == -1) {
- ALOGE("failed to fsync %s: %s", dir_name.c_str(), strerror(errno));
+ if (fsync(dfd) == -1) {
+ PLOG(ERROR) << "failed to fsync " << dir_name;
return -1;
}
- if (close(dfd.get()) == -1) {
- ALOGE("failed to close %s: %s", dir_name.c_str(), strerror(errno));
+ if (close(dfd.release()) == -1) {
+ PLOG(ERROR) << "failed to close " << dir_name;
return -1;
}
- dfd = -1;
return 0;
}
static int uncrypt(const char* input_path, const char* map_file, const int socket) {
- ALOGI("update package is \"%s\"", input_path);
+ LOG(INFO) << "update package is \"" << input_path << "\"";
// Turn the name of the file we're supposed to convert into an
// absolute path, so we can find what filesystem it's on.
char path[PATH_MAX+1];
if (realpath(input_path, path) == NULL) {
- ALOGE("failed to convert \"%s\" to absolute path: %s", input_path, strerror(errno));
+ PLOG(ERROR) << "failed to convert \"" << input_path << "\" to absolute path";
return 1;
}
@@ -430,15 +425,15 @@ static int uncrypt(const char* input_path, const char* map_file, const int socke
bool encrypted;
const char* blk_dev = find_block_device(path, &encryptable, &encrypted);
if (blk_dev == NULL) {
- ALOGE("failed to find block device for %s", path);
+ LOG(ERROR) << "failed to find block device for " << path;
return 1;
}
// If the filesystem it's on isn't encrypted, we only produce the
// block map, we don't rewrite the file contents (it would be
// pointless to do so).
- ALOGI("encryptable: %s", encryptable ? "yes" : "no");
- ALOGI(" encrypted: %s", encrypted ? "yes" : "no");
+ LOG(INFO) << "encryptable: " << (encryptable ? "yes" : "no");
+ LOG(INFO) << " encrypted: " << (encrypted ? "yes" : "no");
// Recovery supports installing packages from 3 paths: /cache,
// /data, and /sdcard. (On a particular device, other locations
@@ -448,7 +443,7 @@ static int uncrypt(const char* input_path, const char* map_file, const int socke
// can read the package without mounting the partition. On /cache
// and /sdcard we leave the file alone.
if (strncmp(path, "/data/", 6) == 0) {
- ALOGI("writing block map %s", map_file);
+ LOG(INFO) << "writing block map " << map_file;
if (produce_block_map(path, map_file, blk_dev, encrypted, socket) != 0) {
return 1;
}
@@ -499,7 +494,7 @@ static bool uncrypt_wrapper(const char* input_path, const char* map_file, const
static bool clear_bcb(const int socket) {
std::string err;
if (!clear_bootloader_message(&err)) {
- ALOGE("failed to clear bootloader message: %s", err.c_str());
+ LOG(ERROR) << "failed to clear bootloader message: " << err;
write_status_to_socket(-1, socket);
return false;
}
@@ -511,7 +506,7 @@ static bool setup_bcb(const int socket) {
// c5. receive message length
int length;
if (!android::base::ReadFully(socket, &length, 4)) {
- ALOGE("failed to read the length: %s", strerror(errno));
+ PLOG(ERROR) << "failed to read the length";
return false;
}
length = ntohl(length);
@@ -520,17 +515,17 @@ static bool setup_bcb(const int socket) {
std::string content;
content.resize(length);
if (!android::base::ReadFully(socket, &content[0], length)) {
- ALOGE("failed to read the length: %s", strerror(errno));
+ PLOG(ERROR) << "failed to read the length";
return false;
}
- ALOGI(" received command: [%s] (%zu)", content.c_str(), content.size());
+ LOG(INFO) << " received command: [" << content << "] (" << content.size() << ")";
std::vector<std::string> options = android::base::Split(content, "\n");
std::string wipe_package;
for (auto& option : options) {
if (android::base::StartsWith(option, "--wipe_package=")) {
std::string path = option.substr(strlen("--wipe_package="));
if (!android::base::ReadFileToString(path, &wipe_package)) {
- ALOGE("failed to read %s: %s", path.c_str(), strerror(errno));
+ PLOG(ERROR) << "failed to read " << path;
return false;
}
option = android::base::StringPrintf("--wipe_package_size=%zu", wipe_package.size());
@@ -540,12 +535,12 @@ static bool setup_bcb(const int socket) {
// c8. setup the bcb command
std::string err;
if (!write_bootloader_message(options, &err)) {
- ALOGE("failed to set bootloader message: %s", err.c_str());
+ LOG(ERROR) << "failed to set bootloader message: " << err;
write_status_to_socket(-1, socket);
return false;
}
if (!wipe_package.empty() && !write_wipe_package(wipe_package, &err)) {
- ALOGE("failed to set wipe package: %s", err.c_str());
+ PLOG(ERROR) << "failed to set wipe package: " << err;
write_status_to_socket(-1, socket);
return false;
}
@@ -587,37 +582,37 @@ int main(int argc, char** argv) {
// c3. The socket is created by init when starting the service. uncrypt
// will use the socket to communicate with its caller.
- unique_fd service_socket(android_get_control_socket(UNCRYPT_SOCKET.c_str()));
- if (!service_socket) {
- ALOGE("failed to open socket \"%s\": %s", UNCRYPT_SOCKET.c_str(), strerror(errno));
+ android::base::unique_fd service_socket(android_get_control_socket(UNCRYPT_SOCKET.c_str()));
+ if (service_socket == -1) {
+ PLOG(ERROR) << "failed to open socket \"" << UNCRYPT_SOCKET << "\"";
return 1;
}
- fcntl(service_socket.get(), F_SETFD, FD_CLOEXEC);
+ fcntl(service_socket, F_SETFD, FD_CLOEXEC);
- if (listen(service_socket.get(), 1) == -1) {
- ALOGE("failed to listen on socket %d: %s", service_socket.get(), strerror(errno));
+ if (listen(service_socket, 1) == -1) {
+ PLOG(ERROR) << "failed to listen on socket " << service_socket.get();
return 1;
}
- unique_fd socket_fd(accept4(service_socket.get(), nullptr, nullptr, SOCK_CLOEXEC));
- if (!socket_fd) {
- ALOGE("failed to accept on socket %d: %s", service_socket.get(), strerror(errno));
+ android::base::unique_fd socket_fd(accept4(service_socket, nullptr, nullptr, SOCK_CLOEXEC));
+ if (socket_fd == -1) {
+ PLOG(ERROR) << "failed to accept on socket " << service_socket.get();
return 1;
}
bool success = false;
switch (action) {
case UNCRYPT:
- success = uncrypt_wrapper(input_path, map_file, socket_fd.get());
+ success = uncrypt_wrapper(input_path, map_file, socket_fd);
break;
case SETUP_BCB:
- success = setup_bcb(socket_fd.get());
+ success = setup_bcb(socket_fd);
break;
case CLEAR_BCB:
- success = clear_bcb(socket_fd.get());
+ success = clear_bcb(socket_fd);
break;
default: // Should never happen.
- ALOGE("Invalid uncrypt action code: %d", action);
+ LOG(ERROR) << "Invalid uncrypt action code: " << action;
return 1;
}
@@ -625,10 +620,10 @@ int main(int argc, char** argv) {
// ensure the client to receive the last status code before the socket gets
// destroyed.
int code;
- if (android::base::ReadFully(socket_fd.get(), &code, 4)) {
- ALOGI(" received %d, exiting now", code);
+ if (android::base::ReadFully(socket_fd, &code, 4)) {
+ LOG(INFO) << " received " << code << ", exiting now";
} else {
- ALOGE("failed to read the code: %s", strerror(errno));
+ PLOG(ERROR) << "failed to read the code";
}
return success ? 0 : 1;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 19:27:49 +0100