| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <ctype.h> |
| #include <errno.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mount.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <time.h> |
| #include <selinux/selinux.h> |
| #include <ftw.h> |
| #include <sys/capability.h> |
| #include <sys/xattr.h> |
| #include <linux/xattr.h> |
| #include <inttypes.h> |
| |
| #include <memory> |
| #include <vector> |
| |
| #include <android-base/parseint.h> |
| #include <android-base/strings.h> |
| #include <android-base/stringprintf.h> |
| |
| #include "bootloader.h" |
| #include "applypatch/applypatch.h" |
| #include "cutils/android_reboot.h" |
| #include "cutils/misc.h" |
| #include "cutils/properties.h" |
| #include "edify/expr.h" |
| #include "error_code.h" |
| #include "minzip/DirUtil.h" |
| #include "mtdutils/mounts.h" |
| #include "mtdutils/mtdutils.h" |
| #include "openssl/sha.h" |
| #include "ota_io.h" |
| #include "updater.h" |
| #include "install.h" |
| #include "tune2fs.h" |
| |
| #ifdef USE_EXT4 |
| #include "make_ext4fs.h" |
| #include "wipe.h" |
| #endif |
| |
| // Send over the buffer to recovery though the command pipe. |
| static void uiPrint(State* state, const std::string& buffer) { |
| UpdaterInfo* ui = reinterpret_cast<UpdaterInfo*>(state->cookie); |
| |
| // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "". |
| // So skip sending empty strings to UI. |
| std::vector<std::string> lines = android::base::Split(buffer, "\n"); |
| for (auto& line: lines) { |
| if (!line.empty()) { |
| fprintf(ui->cmd_pipe, "ui_print %s\n", line.c_str()); |
| fprintf(ui->cmd_pipe, "ui_print\n"); |
| } |
| } |
| |
| // On the updater side, we need to dump the contents to stderr (which has |
| // been redirected to the log file). Because the recovery will only print |
| // the contents to screen when processing pipe command ui_print. |
| fprintf(stderr, "%s", buffer.c_str()); |
| } |
| |
| __attribute__((__format__(printf, 2, 3))) __nonnull((2)) |
| void uiPrintf(State* state, const char* format, ...) { |
| std::string error_msg; |
| |
| va_list ap; |
| va_start(ap, format); |
| android::base::StringAppendV(&error_msg, format, ap); |
| va_end(ap); |
| |
| uiPrint(state, error_msg); |
| } |
| |
| // Take a sha-1 digest and return it as a newly-allocated hex string. |
| char* PrintSha1(const uint8_t* digest) { |
| char* buffer = reinterpret_cast<char*>(malloc(SHA_DIGEST_LENGTH*2 + 1)); |
| const char* alphabet = "0123456789abcdef"; |
| size_t i; |
| for (i = 0; i < SHA_DIGEST_LENGTH; ++i) { |
| buffer[i*2] = alphabet[(digest[i] >> 4) & 0xf]; |
| buffer[i*2+1] = alphabet[digest[i] & 0xf]; |
| } |
| buffer[i*2] = '\0'; |
| return buffer; |
| } |
| |
| // mount(fs_type, partition_type, location, mount_point) |
| // |
| // fs_type="yaffs2" partition_type="MTD" location=partition |
| // fs_type="ext4" partition_type="EMMC" location=device |
| Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| if (argc != 4 && argc != 5) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %d", name, argc); |
| } |
| char* fs_type; |
| char* partition_type; |
| char* location; |
| char* mount_point; |
| char* mount_options; |
| bool has_mount_options; |
| if (argc == 5) { |
| has_mount_options = true; |
| if (ReadArgs(state, argv, 5, &fs_type, &partition_type, |
| &location, &mount_point, &mount_options) < 0) { |
| return NULL; |
| } |
| } else { |
| has_mount_options = false; |
| if (ReadArgs(state, argv, 4, &fs_type, &partition_type, |
| &location, &mount_point) < 0) { |
| return NULL; |
| } |
| } |
| |
| if (strlen(fs_type) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name); |
| goto done; |
| } |
| if (strlen(partition_type) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty", |
| name); |
| goto done; |
| } |
| if (strlen(location) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name); |
| goto done; |
| } |
| if (strlen(mount_point) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty", |
| name); |
| goto done; |
| } |
| |
| { |
| char *secontext = NULL; |
| |
| if (sehandle) { |
| selabel_lookup(sehandle, &secontext, mount_point, 0755); |
| setfscreatecon(secontext); |
| } |
| |
| mkdir(mount_point, 0755); |
| |
| if (secontext) { |
| freecon(secontext); |
| setfscreatecon(NULL); |
| } |
| } |
| |
| if (strcmp(partition_type, "MTD") == 0) { |
| mtd_scan_partitions(); |
| const MtdPartition* mtd; |
| mtd = mtd_find_partition_by_name(location); |
| if (mtd == NULL) { |
| uiPrintf(state, "%s: no mtd partition named \"%s\"\n", |
| name, location); |
| result = strdup(""); |
| goto done; |
| } |
| if (mtd_mount_partition(mtd, mount_point, fs_type, 0 /* rw */) != 0) { |
| uiPrintf(state, "mtd mount of %s failed: %s\n", |
| location, strerror(errno)); |
| result = strdup(""); |
| goto done; |
| } |
| result = mount_point; |
| } else { |
| if (mount(location, mount_point, fs_type, |
| MS_NOATIME | MS_NODEV | MS_NODIRATIME, |
| has_mount_options ? mount_options : "") < 0) { |
| uiPrintf(state, "%s: failed to mount %s at %s: %s\n", |
| name, location, mount_point, strerror(errno)); |
| result = strdup(""); |
| } else { |
| result = mount_point; |
| } |
| } |
| |
| done: |
| free(fs_type); |
| free(partition_type); |
| free(location); |
| if (result != mount_point) free(mount_point); |
| if (has_mount_options) free(mount_options); |
| return StringValue(result); |
| } |
| |
| |
| // is_mounted(mount_point) |
| Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| char* mount_point; |
| if (ReadArgs(state, argv, 1, &mount_point) < 0) { |
| return NULL; |
| } |
| if (strlen(mount_point) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "mount_point argument to unmount() can't be empty"); |
| goto done; |
| } |
| |
| scan_mounted_volumes(); |
| { |
| const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); |
| if (vol == NULL) { |
| result = strdup(""); |
| } else { |
| result = mount_point; |
| } |
| } |
| |
| done: |
| if (result != mount_point) free(mount_point); |
| return StringValue(result); |
| } |
| |
| |
| Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| char* mount_point; |
| if (ReadArgs(state, argv, 1, &mount_point) < 0) { |
| return NULL; |
| } |
| if (strlen(mount_point) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "mount_point argument to unmount() can't be empty"); |
| goto done; |
| } |
| |
| scan_mounted_volumes(); |
| { |
| const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); |
| if (vol == NULL) { |
| uiPrintf(state, "unmount of %s failed; no such volume\n", mount_point); |
| result = strdup(""); |
| } else { |
| int ret = unmount_mounted_volume(vol); |
| if (ret != 0) { |
| uiPrintf(state, "unmount of %s failed (%d): %s\n", |
| mount_point, ret, strerror(errno)); |
| } |
| result = mount_point; |
| } |
| } |
| |
| done: |
| if (result != mount_point) free(mount_point); |
| return StringValue(result); |
| } |
| |
| static int exec_cmd(const char* path, char* const argv[]) { |
| int status; |
| pid_t child; |
| if ((child = vfork()) == 0) { |
| execv(path, argv); |
| _exit(-1); |
| } |
| waitpid(child, &status, 0); |
| if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { |
| printf("%s failed with status %d\n", path, WEXITSTATUS(status)); |
| } |
| return WEXITSTATUS(status); |
| } |
| |
| |
| // format(fs_type, partition_type, location, fs_size, mount_point) |
| // |
| // fs_type="yaffs2" partition_type="MTD" location=partition fs_size=<bytes> mount_point=<location> |
| // fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location> |
| // fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location> |
| // if fs_size == 0, then make fs uses the entire partition. |
| // if fs_size > 0, that is the size to use |
| // if fs_size < 0, then reserve that many bytes at the end of the partition (not for "f2fs") |
| Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| if (argc != 5) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %d", name, argc); |
| } |
| char* fs_type; |
| char* partition_type; |
| char* location; |
| char* fs_size; |
| char* mount_point; |
| |
| if (ReadArgs(state, argv, 5, &fs_type, &partition_type, &location, &fs_size, &mount_point) < 0) { |
| return NULL; |
| } |
| |
| if (strlen(fs_type) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name); |
| goto done; |
| } |
| if (strlen(partition_type) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty", |
| name); |
| goto done; |
| } |
| if (strlen(location) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name); |
| goto done; |
| } |
| |
| if (strlen(mount_point) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty", |
| name); |
| goto done; |
| } |
| |
| if (strcmp(partition_type, "MTD") == 0) { |
| mtd_scan_partitions(); |
| const MtdPartition* mtd = mtd_find_partition_by_name(location); |
| if (mtd == NULL) { |
| printf("%s: no mtd partition named \"%s\"", |
| name, location); |
| result = strdup(""); |
| goto done; |
| } |
| MtdWriteContext* ctx = mtd_write_partition(mtd); |
| if (ctx == NULL) { |
| printf("%s: can't write \"%s\"", name, location); |
| result = strdup(""); |
| goto done; |
| } |
| if (mtd_erase_blocks(ctx, -1) == -1) { |
| mtd_write_close(ctx); |
| printf("%s: failed to erase \"%s\"", name, location); |
| result = strdup(""); |
| goto done; |
| } |
| if (mtd_write_close(ctx) != 0) { |
| printf("%s: failed to close \"%s\"", name, location); |
| result = strdup(""); |
| goto done; |
| } |
| result = location; |
| #ifdef USE_EXT4 |
| } else if (strcmp(fs_type, "ext4") == 0) { |
| int status = make_ext4fs(location, atoll(fs_size), mount_point, sehandle); |
| if (status != 0) { |
| printf("%s: make_ext4fs failed (%d) on %s", |
| name, status, location); |
| result = strdup(""); |
| goto done; |
| } |
| result = location; |
| } else if (strcmp(fs_type, "f2fs") == 0) { |
| char *num_sectors; |
| if (asprintf(&num_sectors, "%lld", atoll(fs_size) / 512) <= 0) { |
| printf("format_volume: failed to create %s command for %s\n", fs_type, location); |
| result = strdup(""); |
| goto done; |
| } |
| const char *f2fs_path = "/sbin/mkfs.f2fs"; |
| const char* const f2fs_argv[] = {"mkfs.f2fs", "-t", "-d1", location, num_sectors, NULL}; |
| int status = exec_cmd(f2fs_path, (char* const*)f2fs_argv); |
| free(num_sectors); |
| if (status != 0) { |
| printf("%s: mkfs.f2fs failed (%d) on %s", |
| name, status, location); |
| result = strdup(""); |
| goto done; |
| } |
| result = location; |
| #endif |
| } else { |
| printf("%s: unsupported fs_type \"%s\" partition_type \"%s\"", |
| name, fs_type, partition_type); |
| } |
| |
| done: |
| free(fs_type); |
| free(partition_type); |
| if (result != location) free(location); |
| return StringValue(result); |
| } |
| |
| Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| |
| char* src_name; |
| char* dst_name; |
| |
| if (ReadArgs(state, argv, 2, &src_name, &dst_name) < 0) { |
| return NULL; |
| } |
| if (strlen(src_name) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "src_name argument to %s() can't be empty", name); |
| goto done; |
| } |
| if (strlen(dst_name) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "dst_name argument to %s() can't be empty", name); |
| goto done; |
| } |
| if (make_parents(dst_name) != 0) { |
| ErrorAbort(state, kFileRenameFailure, "Creating parent of %s failed, error %s", |
| dst_name, strerror(errno)); |
| } else if (access(dst_name, F_OK) == 0 && access(src_name, F_OK) != 0) { |
| // File was already moved |
| result = dst_name; |
| } else if (rename(src_name, dst_name) != 0) { |
| ErrorAbort(state, kFileRenameFailure, "Rename of %s to %s failed, error %s", |
| src_name, dst_name, strerror(errno)); |
| } else { |
| result = dst_name; |
| } |
| |
| done: |
| free(src_name); |
| if (result != dst_name) free(dst_name); |
| return StringValue(result); |
| } |
| |
| Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char** paths = reinterpret_cast<char**>(malloc(argc * sizeof(char*))); |
| for (int i = 0; i < argc; ++i) { |
| paths[i] = Evaluate(state, argv[i]); |
| if (paths[i] == NULL) { |
| for (int j = 0; j < i; ++j) { |
| free(paths[j]); |
| } |
| free(paths); |
| return NULL; |
| } |
| } |
| |
| bool recursive = (strcmp(name, "delete_recursive") == 0); |
| |
| int success = 0; |
| for (int i = 0; i < argc; ++i) { |
| if ((recursive ? dirUnlinkHierarchy(paths[i]) : unlink(paths[i])) == 0) |
| ++success; |
| free(paths[i]); |
| } |
| free(paths); |
| |
| char buffer[10]; |
| sprintf(buffer, "%d", success); |
| return StringValue(strdup(buffer)); |
| } |
| |
| |
| Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| char* frac_str; |
| char* sec_str; |
| if (ReadArgs(state, argv, 2, &frac_str, &sec_str) < 0) { |
| return NULL; |
| } |
| |
| double frac = strtod(frac_str, NULL); |
| int sec; |
| android::base::ParseInt(sec_str, &sec); |
| |
| UpdaterInfo* ui = (UpdaterInfo*)(state->cookie); |
| fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec); |
| |
| free(sec_str); |
| return StringValue(frac_str); |
| } |
| |
| Value* SetProgressFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| char* frac_str; |
| if (ReadArgs(state, argv, 1, &frac_str) < 0) { |
| return NULL; |
| } |
| |
| double frac = strtod(frac_str, NULL); |
| |
| UpdaterInfo* ui = (UpdaterInfo*)(state->cookie); |
| fprintf(ui->cmd_pipe, "set_progress %f\n", frac); |
| |
| return StringValue(frac_str); |
| } |
| |
| // package_extract_dir(package_path, destination_path) |
| Value* PackageExtractDirFn(const char* name, State* state, |
| int argc, Expr* argv[]) { |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| char* zip_path; |
| char* dest_path; |
| if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL; |
| |
| ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip; |
| |
| // To create a consistent system image, never use the clock for timestamps. |
| struct utimbuf timestamp = { 1217592000, 1217592000 }; // 8/1/2008 default |
| |
| bool success = mzExtractRecursive(za, zip_path, dest_path, |
| ×tamp, |
| NULL, NULL, sehandle); |
| free(zip_path); |
| free(dest_path); |
| return StringValue(strdup(success ? "t" : "")); |
| } |
| |
| |
| // package_extract_file(package_path, destination_path) |
| // or |
| // package_extract_file(package_path) |
| // to return the entire contents of the file as the result of this |
| // function (the char* returned is actually a FileContents*). |
| Value* PackageExtractFileFn(const char* name, State* state, |
| int argc, Expr* argv[]) { |
| if (argc < 1 || argc > 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %d", |
| name, argc); |
| } |
| bool success = false; |
| |
| if (argc == 2) { |
| // The two-argument version extracts to a file. |
| |
| ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip; |
| |
| char* zip_path; |
| char* dest_path; |
| if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL; |
| |
| const ZipEntry* entry = mzFindZipEntry(za, zip_path); |
| if (entry == NULL) { |
| printf("%s: no %s in package\n", name, zip_path); |
| goto done2; |
| } |
| |
| { |
| int fd = TEMP_FAILURE_RETRY(ota_open(dest_path, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC, |
| S_IRUSR | S_IWUSR)); |
| if (fd == -1) { |
| printf("%s: can't open %s for write: %s\n", name, dest_path, strerror(errno)); |
| goto done2; |
| } |
| success = mzExtractZipEntryToFile(za, entry, fd); |
| if (ota_fsync(fd) == -1) { |
| printf("fsync of \"%s\" failed: %s\n", dest_path, strerror(errno)); |
| success = false; |
| } |
| if (ota_close(fd) == -1) { |
| printf("close of \"%s\" failed: %s\n", dest_path, strerror(errno)); |
| success = false; |
| } |
| } |
| |
| done2: |
| free(zip_path); |
| free(dest_path); |
| return StringValue(strdup(success ? "t" : "")); |
| } else { |
| // The one-argument version returns the contents of the file |
| // as the result. |
| |
| char* zip_path; |
| if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL; |
| |
| Value* v = reinterpret_cast<Value*>(malloc(sizeof(Value))); |
| v->type = VAL_BLOB; |
| v->size = -1; |
| v->data = NULL; |
| |
| ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip; |
| const ZipEntry* entry = mzFindZipEntry(za, zip_path); |
| if (entry == NULL) { |
| printf("%s: no %s in package\n", name, zip_path); |
| goto done1; |
| } |
| |
| v->size = mzGetZipEntryUncompLen(entry); |
| v->data = reinterpret_cast<char*>(malloc(v->size)); |
| if (v->data == NULL) { |
| printf("%s: failed to allocate %ld bytes for %s\n", |
| name, (long)v->size, zip_path); |
| goto done1; |
| } |
| |
| success = mzExtractZipEntryToBuffer(za, entry, |
| (unsigned char *)v->data); |
| |
| done1: |
| free(zip_path); |
| if (!success) { |
| free(v->data); |
| v->data = NULL; |
| v->size = -1; |
| } |
| return v; |
| } |
| } |
| |
| // Create all parent directories of name, if necessary. |
| static int make_parents(char* name) { |
| char* p; |
| for (p = name + (strlen(name)-1); p > name; --p) { |
| if (*p != '/') continue; |
| *p = '\0'; |
| if (make_parents(name) < 0) return -1; |
| int result = mkdir(name, 0700); |
| if (result == 0) printf("created [%s]\n", name); |
| *p = '/'; |
| if (result == 0 || errno == EEXIST) { |
| // successfully created or already existed; we're done |
| return 0; |
| } else { |
| printf("failed to mkdir %s: %s\n", name, strerror(errno)); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| // symlink target src1 src2 ... |
| // unlinks any previously existing src1, src2, etc before creating symlinks. |
| Value* SymlinkFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc == 0) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1+ args, got %d", name, argc); |
| } |
| char* target; |
| target = Evaluate(state, argv[0]); |
| if (target == NULL) return NULL; |
| |
| char** srcs = ReadVarArgs(state, argc-1, argv+1); |
| if (srcs == NULL) { |
| free(target); |
| return NULL; |
| } |
| |
| int bad = 0; |
| int i; |
| for (i = 0; i < argc-1; ++i) { |
| if (unlink(srcs[i]) < 0) { |
| if (errno != ENOENT) { |
| printf("%s: failed to remove %s: %s\n", |
| name, srcs[i], strerror(errno)); |
| ++bad; |
| } |
| } |
| if (make_parents(srcs[i])) { |
| printf("%s: failed to symlink %s to %s: making parents failed\n", |
| name, srcs[i], target); |
| ++bad; |
| } |
| if (symlink(target, srcs[i]) < 0) { |
| printf("%s: failed to symlink %s to %s: %s\n", |
| name, srcs[i], target, strerror(errno)); |
| ++bad; |
| } |
| free(srcs[i]); |
| } |
| free(srcs); |
| if (bad) { |
| return ErrorAbort(state, kSymlinkFailure, "%s: some symlinks failed", name); |
| } |
| return StringValue(strdup("")); |
| } |
| |
| struct perm_parsed_args { |
| bool has_uid; |
| uid_t uid; |
| bool has_gid; |
| gid_t gid; |
| bool has_mode; |
| mode_t mode; |
| bool has_fmode; |
| mode_t fmode; |
| bool has_dmode; |
| mode_t dmode; |
| bool has_selabel; |
| char* selabel; |
| bool has_capabilities; |
| uint64_t capabilities; |
| }; |
| |
| static struct perm_parsed_args ParsePermArgs(State * state, int argc, char** args) { |
| int i; |
| struct perm_parsed_args parsed; |
| int bad = 0; |
| static int max_warnings = 20; |
| |
| memset(&parsed, 0, sizeof(parsed)); |
| |
| for (i = 1; i < argc; i += 2) { |
| if (strcmp("uid", args[i]) == 0) { |
| int64_t uid; |
| if (sscanf(args[i+1], "%" SCNd64, &uid) == 1) { |
| parsed.uid = uid; |
| parsed.has_uid = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid UID \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("gid", args[i]) == 0) { |
| int64_t gid; |
| if (sscanf(args[i+1], "%" SCNd64, &gid) == 1) { |
| parsed.gid = gid; |
| parsed.has_gid = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid GID \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("mode", args[i]) == 0) { |
| int32_t mode; |
| if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) { |
| parsed.mode = mode; |
| parsed.has_mode = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid mode \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("dmode", args[i]) == 0) { |
| int32_t mode; |
| if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) { |
| parsed.dmode = mode; |
| parsed.has_dmode = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid dmode \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("fmode", args[i]) == 0) { |
| int32_t mode; |
| if (sscanf(args[i+1], "%" SCNi32, &mode) == 1) { |
| parsed.fmode = mode; |
| parsed.has_fmode = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid fmode \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("capabilities", args[i]) == 0) { |
| int64_t capabilities; |
| if (sscanf(args[i+1], "%" SCNi64, &capabilities) == 1) { |
| parsed.capabilities = capabilities; |
| parsed.has_capabilities = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid capabilities \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (strcmp("selabel", args[i]) == 0) { |
| if (args[i+1][0] != '\0') { |
| parsed.selabel = args[i+1]; |
| parsed.has_selabel = true; |
| } else { |
| uiPrintf(state, "ParsePermArgs: invalid selabel \"%s\"\n", args[i + 1]); |
| bad++; |
| } |
| continue; |
| } |
| if (max_warnings != 0) { |
| printf("ParsedPermArgs: unknown key \"%s\", ignoring\n", args[i]); |
| max_warnings--; |
| if (max_warnings == 0) { |
| printf("ParsedPermArgs: suppressing further warnings\n"); |
| } |
| } |
| } |
| return parsed; |
| } |
| |
| static int ApplyParsedPerms( |
| State * state, |
| const char* filename, |
| const struct stat *statptr, |
| struct perm_parsed_args parsed) |
| { |
| int bad = 0; |
| |
| if (parsed.has_selabel) { |
| if (lsetfilecon(filename, parsed.selabel) != 0) { |
| uiPrintf(state, "ApplyParsedPerms: lsetfilecon of %s to %s failed: %s\n", |
| filename, parsed.selabel, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| /* ignore symlinks */ |
| if (S_ISLNK(statptr->st_mode)) { |
| return bad; |
| } |
| |
| if (parsed.has_uid) { |
| if (chown(filename, parsed.uid, -1) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: chown of %s to %d failed: %s\n", |
| filename, parsed.uid, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| if (parsed.has_gid) { |
| if (chown(filename, -1, parsed.gid) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: chgrp of %s to %d failed: %s\n", |
| filename, parsed.gid, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| if (parsed.has_mode) { |
| if (chmod(filename, parsed.mode) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", |
| filename, parsed.mode, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| if (parsed.has_dmode && S_ISDIR(statptr->st_mode)) { |
| if (chmod(filename, parsed.dmode) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", |
| filename, parsed.dmode, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| if (parsed.has_fmode && S_ISREG(statptr->st_mode)) { |
| if (chmod(filename, parsed.fmode) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: chmod of %s to %d failed: %s\n", |
| filename, parsed.fmode, strerror(errno)); |
| bad++; |
| } |
| } |
| |
| if (parsed.has_capabilities && S_ISREG(statptr->st_mode)) { |
| if (parsed.capabilities == 0) { |
| if ((removexattr(filename, XATTR_NAME_CAPS) == -1) && (errno != ENODATA)) { |
| // Report failure unless it's ENODATA (attribute not set) |
| uiPrintf(state, "ApplyParsedPerms: removexattr of %s to %" PRIx64 " failed: %s\n", |
| filename, parsed.capabilities, strerror(errno)); |
| bad++; |
| } |
| } else { |
| struct vfs_cap_data cap_data; |
| memset(&cap_data, 0, sizeof(cap_data)); |
| cap_data.magic_etc = VFS_CAP_REVISION | VFS_CAP_FLAGS_EFFECTIVE; |
| cap_data.data[0].permitted = (uint32_t) (parsed.capabilities & 0xffffffff); |
| cap_data.data[0].inheritable = 0; |
| cap_data.data[1].permitted = (uint32_t) (parsed.capabilities >> 32); |
| cap_data.data[1].inheritable = 0; |
| if (setxattr(filename, XATTR_NAME_CAPS, &cap_data, sizeof(cap_data), 0) < 0) { |
| uiPrintf(state, "ApplyParsedPerms: setcap of %s to %" PRIx64 " failed: %s\n", |
| filename, parsed.capabilities, strerror(errno)); |
| bad++; |
| } |
| } |
| } |
| |
| return bad; |
| } |
| |
| // nftw doesn't allow us to pass along context, so we need to use |
| // global variables. *sigh* |
| static struct perm_parsed_args recursive_parsed_args; |
| static State* recursive_state; |
| |
| static int do_SetMetadataRecursive(const char* filename, const struct stat *statptr, |
| int fileflags, struct FTW *pfwt) { |
| return ApplyParsedPerms(recursive_state, filename, statptr, recursive_parsed_args); |
| } |
| |
| static Value* SetMetadataFn(const char* name, State* state, int argc, Expr* argv[]) { |
| int bad = 0; |
| struct stat sb; |
| Value* result = NULL; |
| |
| bool recursive = (strcmp(name, "set_metadata_recursive") == 0); |
| |
| if ((argc % 2) != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, |
| "%s() expects an odd number of arguments, got %d", name, argc); |
| } |
| |
| char** args = ReadVarArgs(state, argc, argv); |
| if (args == NULL) return NULL; |
| |
| if (lstat(args[0], &sb) == -1) { |
| result = ErrorAbort(state, kSetMetadataFailure, "%s: Error on lstat of \"%s\": %s", |
| name, args[0], strerror(errno)); |
| goto done; |
| } |
| |
| { |
| struct perm_parsed_args parsed = ParsePermArgs(state, argc, args); |
| |
| if (recursive) { |
| recursive_parsed_args = parsed; |
| recursive_state = state; |
| bad += nftw(args[0], do_SetMetadataRecursive, 30, FTW_CHDIR | FTW_DEPTH | FTW_PHYS); |
| memset(&recursive_parsed_args, 0, sizeof(recursive_parsed_args)); |
| recursive_state = NULL; |
| } else { |
| bad += ApplyParsedPerms(state, args[0], &sb, parsed); |
| } |
| } |
| |
| done: |
| for (int i = 0; i < argc; ++i) { |
| free(args[i]); |
| } |
| free(args); |
| |
| if (result != NULL) { |
| return result; |
| } |
| |
| if (bad > 0) { |
| return ErrorAbort(state, kSetMetadataFailure, "%s: some changes failed", name); |
| } |
| |
| return StringValue(strdup("")); |
| } |
| |
| Value* GetPropFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| char* key = Evaluate(state, argv[0]); |
| if (key == NULL) return NULL; |
| |
| char value[PROPERTY_VALUE_MAX]; |
| property_get(key, value, ""); |
| free(key); |
| |
| return StringValue(strdup(value)); |
| } |
| |
| |
| // file_getprop(file, key) |
| // |
| // interprets 'file' as a getprop-style file (key=value pairs, one |
| // per line. # comment lines,blank lines, lines without '=' ignored), |
| // and returns the value for 'key' (or "" if it isn't defined). |
| Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| char* buffer = NULL; |
| char* filename; |
| char* key; |
| if (ReadArgs(state, argv, 2, &filename, &key) < 0) { |
| return NULL; |
| } |
| |
| struct stat st; |
| if (stat(filename, &st) < 0) { |
| ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name, filename, |
| strerror(errno)); |
| goto done; |
| } |
| |
| #define MAX_FILE_GETPROP_SIZE 65536 |
| |
| if (st.st_size > MAX_FILE_GETPROP_SIZE) { |
| ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %d)", filename, name, |
| MAX_FILE_GETPROP_SIZE); |
| goto done; |
| } |
| |
| buffer = reinterpret_cast<char*>(malloc(st.st_size+1)); |
| if (buffer == NULL) { |
| ErrorAbort(state, kFileGetPropFailure, "%s: failed to alloc %lld bytes", name, |
| (long long)st.st_size+1); |
| goto done; |
| } |
| |
| FILE* f; |
| f = fopen(filename, "rb"); |
| if (f == NULL) { |
| ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename, |
| strerror(errno)); |
| goto done; |
| } |
| |
| if (ota_fread(buffer, 1, st.st_size, f) != static_cast<size_t>(st.st_size)) { |
| ErrorAbort(state, kFreadFailure, "%s: failed to read %lld bytes from %s", |
| name, (long long)st.st_size+1, filename); |
| fclose(f); |
| goto done; |
| } |
| buffer[st.st_size] = '\0'; |
| |
| fclose(f); |
| |
| char* line; |
| line = strtok(buffer, "\n"); |
| do { |
| // skip whitespace at start of line |
| while (*line && isspace(*line)) ++line; |
| |
| // comment or blank line: skip to next line |
| if (*line == '\0' || *line == '#') continue; |
| |
| char* equal = strchr(line, '='); |
| if (equal == NULL) { |
| continue; |
| } |
| |
| // trim whitespace between key and '=' |
| char* key_end = equal-1; |
| while (key_end > line && isspace(*key_end)) --key_end; |
| key_end[1] = '\0'; |
| |
| // not the key we're looking for |
| if (strcmp(key, line) != 0) continue; |
| |
| // skip whitespace after the '=' to the start of the value |
| char* val_start = equal+1; |
| while(*val_start && isspace(*val_start)) ++val_start; |
| |
| // trim trailing whitespace |
| char* val_end = val_start + strlen(val_start)-1; |
| while (val_end > val_start && isspace(*val_end)) --val_end; |
| val_end[1] = '\0'; |
| |
| result = strdup(val_start); |
| break; |
| |
| } while ((line = strtok(NULL, "\n"))); |
| |
| if (result == NULL) result = strdup(""); |
| |
| done: |
| free(filename); |
| free(key); |
| free(buffer); |
| return StringValue(result); |
| } |
| |
| // write_raw_image(filename_or_blob, partition) |
| Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char* result = NULL; |
| |
| Value* partition_value; |
| Value* contents; |
| if (ReadValueArgs(state, argv, 2, &contents, &partition_value) < 0) { |
| return NULL; |
| } |
| |
| char* partition = NULL; |
| if (partition_value->type != VAL_STRING) { |
| ErrorAbort(state, kArgsParsingFailure, "partition argument to %s must be string", name); |
| goto done; |
| } |
| partition = partition_value->data; |
| if (strlen(partition) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "partition argument to %s can't be empty", name); |
| goto done; |
| } |
| if (contents->type == VAL_STRING && strlen((char*) contents->data) == 0) { |
| ErrorAbort(state, kArgsParsingFailure, "file argument to %s can't be empty", name); |
| goto done; |
| } |
| |
| mtd_scan_partitions(); |
| const MtdPartition* mtd; |
| mtd = mtd_find_partition_by_name(partition); |
| if (mtd == NULL) { |
| printf("%s: no mtd partition named \"%s\"\n", name, partition); |
| result = strdup(""); |
| goto done; |
| } |
| |
| MtdWriteContext* ctx; |
| ctx = mtd_write_partition(mtd); |
| if (ctx == NULL) { |
| printf("%s: can't write mtd partition \"%s\"\n", |
| name, partition); |
| result = strdup(""); |
| goto done; |
| } |
| |
| bool success; |
| |
| if (contents->type == VAL_STRING) { |
| // we're given a filename as the contents |
| char* filename = contents->data; |
| FILE* f = ota_fopen(filename, "rb"); |
| if (f == NULL) { |
| printf("%s: can't open %s: %s\n", name, filename, strerror(errno)); |
| result = strdup(""); |
| goto done; |
| } |
| |
| success = true; |
| char* buffer = reinterpret_cast<char*>(malloc(BUFSIZ)); |
| int read; |
| while (success && (read = ota_fread(buffer, 1, BUFSIZ, f)) > 0) { |
| int wrote = mtd_write_data(ctx, buffer, read); |
| success = success && (wrote == read); |
| } |
| free(buffer); |
| ota_fclose(f); |
| } else { |
| // we're given a blob as the contents |
| ssize_t wrote = mtd_write_data(ctx, contents->data, contents->size); |
| success = (wrote == contents->size); |
| } |
| if (!success) { |
| printf("mtd_write_data to %s failed: %s\n", |
| partition, strerror(errno)); |
| } |
| |
| if (mtd_erase_blocks(ctx, -1) == -1) { |
| printf("%s: error erasing blocks of %s\n", name, partition); |
| } |
| if (mtd_write_close(ctx) != 0) { |
| printf("%s: error closing write of %s\n", name, partition); |
| } |
| |
| printf("%s %s partition\n", |
| success ? "wrote" : "failed to write", partition); |
| |
| result = success ? partition : strdup(""); |
| |
| done: |
| if (result != partition) FreeValue(partition_value); |
| FreeValue(contents); |
| return StringValue(result); |
| } |
| |
| // apply_patch_space(bytes) |
| Value* ApplyPatchSpaceFn(const char* name, State* state, |
| int argc, Expr* argv[]) { |
| char* bytes_str; |
| if (ReadArgs(state, argv, 1, &bytes_str) < 0) { |
| return NULL; |
| } |
| |
| size_t bytes; |
| if (!android::base::ParseUint(bytes_str, &bytes)) { |
| ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n", |
| name, bytes_str); |
| free(bytes_str); |
| return nullptr; |
| } |
| |
| return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t")); |
| } |
| |
| // apply_patch(file, size, init_sha1, tgt_sha1, patch) |
| |
| Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc < 6 || (argc % 2) == 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an " |
| "even number, got %d", name, argc); |
| } |
| |
| char* source_filename; |
| char* target_filename; |
| char* target_sha1; |
| char* target_size_str; |
| if (ReadArgs(state, argv, 4, &source_filename, &target_filename, |
| &target_sha1, &target_size_str) < 0) { |
| return NULL; |
| } |
| |
| size_t target_size; |
| if (!android::base::ParseUint(target_size_str, &target_size)) { |
| ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count", |
| name, target_size_str); |
| free(source_filename); |
| free(target_filename); |
| free(target_sha1); |
| free(target_size_str); |
| return nullptr; |
| } |
| |
| int patchcount = (argc-4) / 2; |
| std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc-4, argv+4), |
| free); |
| if (!arg_values) { |
| return nullptr; |
| } |
| std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patch_shas; |
| std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patches; |
| // Protect values by unique_ptrs first to get rid of memory leak. |
| for (int i = 0; i < patchcount * 2; i += 2) { |
| patch_shas.emplace_back(arg_values.get()[i], FreeValue); |
| patches.emplace_back(arg_values.get()[i+1], FreeValue); |
| } |
| |
| for (int i = 0; i < patchcount; ++i) { |
| if (patch_shas[i]->type != VAL_STRING) { |
| ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name, i); |
| return nullptr; |
| } |
| if (patches[i]->type != VAL_BLOB) { |
| ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name, i); |
| return nullptr; |
| } |
| } |
| |
| std::vector<char*> patch_sha_str; |
| std::vector<Value*> patch_ptrs; |
| for (int i = 0; i < patchcount; ++i) { |
| patch_sha_str.push_back(patch_shas[i]->data); |
| patch_ptrs.push_back(patches[i].get()); |
| } |
| |
| int result = applypatch(source_filename, target_filename, |
| target_sha1, target_size, |
| patchcount, patch_sha_str.data(), patch_ptrs.data(), NULL); |
| |
| return StringValue(strdup(result == 0 ? "t" : "")); |
| } |
| |
| // apply_patch_check(file, [sha1_1, ...]) |
| Value* ApplyPatchCheckFn(const char* name, State* state, |
| int argc, Expr* argv[]) { |
| if (argc < 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %d", |
| name, argc); |
| } |
| |
| char* filename; |
| if (ReadArgs(state, argv, 1, &filename) < 0) { |
| return NULL; |
| } |
| |
| int patchcount = argc-1; |
| char** sha1s = ReadVarArgs(state, argc-1, argv+1); |
| |
| int result = applypatch_check(filename, patchcount, sha1s); |
| |
| int i; |
| for (i = 0; i < patchcount; ++i) { |
| free(sha1s[i]); |
| } |
| free(sha1s); |
| |
| return StringValue(strdup(result == 0 ? "t" : "")); |
| } |
| |
| // This is the updater side handler for ui_print() in edify script. Contents |
| // will be sent over to the recovery side for on-screen display. |
| Value* UIPrintFn(const char* name, State* state, int argc, Expr* argv[]) { |
| char** args = ReadVarArgs(state, argc, argv); |
| if (args == NULL) { |
| return NULL; |
| } |
| |
| std::string buffer; |
| for (int i = 0; i < argc; ++i) { |
| buffer += args[i]; |
| free(args[i]); |
| } |
| free(args); |
| |
| buffer += "\n"; |
| uiPrint(state, buffer); |
| return StringValue(strdup(buffer.c_str())); |
| } |
| |
| Value* WipeCacheFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 0) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %d", name, argc); |
| } |
| fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe, "wipe_cache\n"); |
| return StringValue(strdup("t")); |
| } |
| |
| Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc < 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name); |
| } |
| char** args = ReadVarArgs(state, argc, argv); |
| if (args == NULL) { |
| return NULL; |
| } |
| |
| char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1))); |
| memcpy(args2, args, sizeof(char*) * argc); |
| args2[argc] = NULL; |
| |
| printf("about to run program [%s] with %d args\n", args2[0], argc); |
| |
| pid_t child = fork(); |
| if (child == 0) { |
| execv(args2[0], args2); |
| printf("run_program: execv failed: %s\n", strerror(errno)); |
| _exit(1); |
| } |
| int status; |
| waitpid(child, &status, 0); |
| if (WIFEXITED(status)) { |
| if (WEXITSTATUS(status) != 0) { |
| printf("run_program: child exited with status %d\n", |
| WEXITSTATUS(status)); |
| } |
| } else if (WIFSIGNALED(status)) { |
| printf("run_program: child terminated by signal %d\n", |
| WTERMSIG(status)); |
| } |
| |
| int i; |
| for (i = 0; i < argc; ++i) { |
| free(args[i]); |
| } |
| free(args); |
| free(args2); |
| |
| char buffer[20]; |
| sprintf(buffer, "%d", status); |
| |
| return StringValue(strdup(buffer)); |
| } |
| |
| // sha1_check(data) |
| // to return the sha1 of the data (given in the format returned by |
| // read_file). |
| // |
| // sha1_check(data, sha1_hex, [sha1_hex, ...]) |
| // returns the sha1 of the file if it matches any of the hex |
| // strings passed, or "" if it does not equal any of them. |
| // |
| Value* Sha1CheckFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc < 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name); |
| } |
| |
| std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc, argv), free); |
| if (arg_values == nullptr) { |
| return nullptr; |
| } |
| std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> args; |
| for (int i = 0; i < argc; ++i) { |
| args.emplace_back(arg_values.get()[i], FreeValue); |
| } |
| |
| if (args[0]->size < 0) { |
| return StringValue(strdup("")); |
| } |
| uint8_t digest[SHA_DIGEST_LENGTH]; |
| SHA1(reinterpret_cast<uint8_t*>(args[0]->data), args[0]->size, digest); |
| |
| if (argc == 1) { |
| return StringValue(PrintSha1(digest)); |
| } |
| |
| int i; |
| uint8_t arg_digest[SHA_DIGEST_LENGTH]; |
| for (i = 1; i < argc; ++i) { |
| if (args[i]->type != VAL_STRING) { |
| printf("%s(): arg %d is not a string; skipping", |
| name, i); |
| } else if (ParseSha1(args[i]->data, arg_digest) != 0) { |
| // Warn about bad args and skip them. |
| printf("%s(): error parsing \"%s\" as sha-1; skipping", |
| name, args[i]->data); |
| } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) { |
| break; |
| } |
| } |
| if (i >= argc) { |
| // Didn't match any of the hex strings; return false. |
| return StringValue(strdup("")); |
| } |
| // Found a match. |
| return args[i].release(); |
| } |
| |
| // Read a local file and return its contents (the Value* returned |
| // is actually a FileContents*). |
| Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| char* filename; |
| if (ReadArgs(state, argv, 1, &filename) < 0) return NULL; |
| |
| Value* v = static_cast<Value*>(malloc(sizeof(Value))); |
| if (v == nullptr) { |
| return nullptr; |
| } |
| v->type = VAL_BLOB; |
| v->size = -1; |
| v->data = nullptr; |
| |
| FileContents fc; |
| if (LoadFileContents(filename, &fc) != 0) { |
| v->data = static_cast<char*>(malloc(fc.data.size())); |
| if (v->data != nullptr) { |
| memcpy(v->data, fc.data.data(), fc.data.size()); |
| v->size = fc.data.size(); |
| } |
| } |
| free(filename); |
| return v; |
| } |
| |
| // Immediately reboot the device. Recovery is not finished normally, |
| // so if you reboot into recovery it will re-start applying the |
| // current package (because nothing has cleared the copy of the |
| // arguments stored in the BCB). |
| // |
| // The argument is the partition name passed to the android reboot |
| // property. It can be "recovery" to boot from the recovery |
| // partition, or "" (empty string) to boot from the regular boot |
| // partition. |
| Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| |
| char* filename; |
| char* property; |
| if (ReadArgs(state, argv, 2, &filename, &property) < 0) return NULL; |
| |
| char buffer[80]; |
| |
| // zero out the 'command' field of the bootloader message. |
| memset(buffer, 0, sizeof(((struct bootloader_message*)0)->command)); |
| FILE* f = fopen(filename, "r+b"); |
| fseek(f, offsetof(struct bootloader_message, command), SEEK_SET); |
| ota_fwrite(buffer, sizeof(((struct bootloader_message*)0)->command), 1, f); |
| fclose(f); |
| free(filename); |
| |
| strcpy(buffer, "reboot,"); |
| if (property != NULL) { |
| strncat(buffer, property, sizeof(buffer)-10); |
| } |
| |
| property_set(ANDROID_RB_PROPERTY, buffer); |
| |
| sleep(5); |
| free(property); |
| ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name); |
| return NULL; |
| } |
| |
| // Store a string value somewhere that future invocations of recovery |
| // can access it. This value is called the "stage" and can be used to |
| // drive packages that need to do reboots in the middle of |
| // installation and keep track of where they are in the multi-stage |
| // install. |
| // |
| // The first argument is the block device for the misc partition |
| // ("/misc" in the fstab), which is where this value is stored. The |
| // second argument is the string to store; it should not exceed 31 |
| // bytes. |
| Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| |
| char* filename; |
| char* stagestr; |
| if (ReadArgs(state, argv, 2, &filename, &stagestr) < 0) return NULL; |
| |
| // Store this value in the misc partition, immediately after the |
| // bootloader message that the main recovery uses to save its |
| // arguments in case of the device restarting midway through |
| // package installation. |
| FILE* f = fopen(filename, "r+b"); |
| fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET); |
| int to_write = strlen(stagestr)+1; |
| int max_size = sizeof(((struct bootloader_message*)0)->stage); |
| if (to_write > max_size) { |
| to_write = max_size; |
| stagestr[max_size-1] = 0; |
| } |
| ota_fwrite(stagestr, to_write, 1, f); |
| fclose(f); |
| |
| free(stagestr); |
| return StringValue(filename); |
| } |
| |
| // Return the value most recently saved with SetStageFn. The argument |
| // is the block device for the misc partition. |
| Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 1) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc); |
| } |
| |
| char* filename; |
| if (ReadArgs(state, argv, 1, &filename) < 0) return NULL; |
| |
| char buffer[sizeof(((struct bootloader_message*)0)->stage)]; |
| FILE* f = fopen(filename, "rb"); |
| fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET); |
| ota_fread(buffer, sizeof(buffer), 1, f); |
| fclose(f); |
| buffer[sizeof(buffer)-1] = '\0'; |
| |
| return StringValue(strdup(buffer)); |
| } |
| |
| Value* WipeBlockDeviceFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 2) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc); |
| } |
| |
| char* filename; |
| char* len_str; |
| if (ReadArgs(state, argv, 2, &filename, &len_str) < 0) return NULL; |
| |
| size_t len; |
| android::base::ParseUint(len_str, &len); |
| int fd = ota_open(filename, O_WRONLY, 0644); |
| int success = wipe_block_device(fd, len); |
| |
| free(filename); |
| free(len_str); |
| |
| ota_close(fd); |
| |
| return StringValue(strdup(success ? "t" : "")); |
| } |
| |
| Value* EnableRebootFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc != 0) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %d", name, argc); |
| } |
| UpdaterInfo* ui = (UpdaterInfo*)(state->cookie); |
| fprintf(ui->cmd_pipe, "enable_reboot\n"); |
| return StringValue(strdup("t")); |
| } |
| |
| Value* Tune2FsFn(const char* name, State* state, int argc, Expr* argv[]) { |
| if (argc == 0) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %d", name, argc); |
| } |
| |
| char** args = ReadVarArgs(state, argc, argv); |
| if (args == NULL) { |
| return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name); |
| } |
| |
| char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1))); |
| // Tune2fs expects the program name as its args[0] |
| args2[0] = strdup(name); |
| for (int i = 0; i < argc; ++i) { |
| args2[i + 1] = args[i]; |
| } |
| int result = tune2fs_main(argc + 1, args2); |
| for (int i = 0; i < argc; ++i) { |
| free(args[i]); |
| } |
| free(args); |
| |
| free(args2[0]); |
| free(args2); |
| if (result != 0) { |
| return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", |
| name, result); |
| } |
| return StringValue(strdup("t")); |
| } |
| |
| void RegisterInstallFunctions() { |
| RegisterFunction("mount", MountFn); |
| RegisterFunction("is_mounted", IsMountedFn); |
| RegisterFunction("unmount", UnmountFn); |
| RegisterFunction("format", FormatFn); |
| RegisterFunction("show_progress", ShowProgressFn); |
| RegisterFunction("set_progress", SetProgressFn); |
| RegisterFunction("delete", DeleteFn); |
| RegisterFunction("delete_recursive", DeleteFn); |
| RegisterFunction("package_extract_dir", PackageExtractDirFn); |
| RegisterFunction("package_extract_file", PackageExtractFileFn); |
| RegisterFunction("symlink", SymlinkFn); |
| |
| // Usage: |
| // set_metadata("filename", "key1", "value1", "key2", "value2", ...) |
| // Example: |
| // set_metadata("/system/bin/netcfg", "uid", 0, "gid", 3003, "mode", 02750, "selabel", "u:object_r:system_file:s0", "capabilities", 0x0); |
| RegisterFunction("set_metadata", SetMetadataFn); |
| |
| // Usage: |
| // set_metadata_recursive("dirname", "key1", "value1", "key2", "value2", ...) |
| // Example: |
| // set_metadata_recursive("/system", "uid", 0, "gid", 0, "fmode", 0644, "dmode", 0755, "selabel", "u:object_r:system_file:s0", "capabilities", 0x0); |
| RegisterFunction("set_metadata_recursive", SetMetadataFn); |
| |
| RegisterFunction("getprop", GetPropFn); |
| RegisterFunction("file_getprop", FileGetPropFn); |
| RegisterFunction("write_raw_image", WriteRawImageFn); |
| |
| RegisterFunction("apply_patch", ApplyPatchFn); |
| RegisterFunction("apply_patch_check", ApplyPatchCheckFn); |
| RegisterFunction("apply_patch_space", ApplyPatchSpaceFn); |
| |
| RegisterFunction("wipe_block_device", WipeBlockDeviceFn); |
| |
| RegisterFunction("read_file", ReadFileFn); |
| RegisterFunction("sha1_check", Sha1CheckFn); |
| RegisterFunction("rename", RenameFn); |
| |
| RegisterFunction("wipe_cache", WipeCacheFn); |
| |
| RegisterFunction("ui_print", UIPrintFn); |
| |
| RegisterFunction("run_program", RunProgramFn); |
| |
| RegisterFunction("reboot_now", RebootNowFn); |
| RegisterFunction("get_stage", GetStageFn); |
| RegisterFunction("set_stage", SetStageFn); |
| |
| RegisterFunction("enable_reboot", EnableRebootFn); |
| RegisterFunction("tune2fs", Tune2FsFn); |
| } |
