diff options
Diffstat (limited to 'updater')
| -rw-r--r-- | updater/Android.mk | 4 | ||||
| -rw-r--r-- | updater/MODULE_LICENSE_GPL | 0 | ||||
| -rw-r--r-- | updater/NOTICE | 339 | ||||
| -rw-r--r-- | updater/install.c | 255 | ||||
| -rw-r--r-- | updater/updater.c | 18 |
5 files changed, 586 insertions, 30 deletions
diff --git a/updater/Android.mk b/updater/Android.mk index 67e98ecd4..99b489029 100644 --- a/updater/Android.mk +++ b/updater/Android.mk @@ -20,6 +20,7 @@ LOCAL_SRC_FILES := $(updater_src_files) ifeq ($(TARGET_USERIMAGES_USE_EXT4), true) LOCAL_CFLAGS += -DUSE_EXT4 +LOCAL_CFLAGS += -Wno-unused-parameter LOCAL_C_INCLUDES += system/extras/ext4_utils LOCAL_STATIC_LIBRARIES += \ libext4_utils_static \ @@ -30,11 +31,12 @@ endif LOCAL_STATIC_LIBRARIES += $(TARGET_RECOVERY_UPDATER_LIBS) $(TARGET_RECOVERY_UPDATER_EXTRA_LIBS) LOCAL_STATIC_LIBRARIES += libapplypatch libedify libmtdutils libminzip libz LOCAL_STATIC_LIBRARIES += libmincrypt libbz -LOCAL_STATIC_LIBRARIES += libminelf LOCAL_STATIC_LIBRARIES += libcutils liblog libstdc++ libc LOCAL_STATIC_LIBRARIES += libselinux LOCAL_C_INCLUDES += $(LOCAL_PATH)/.. +LOCAL_STATIC_LIBRARIES += libsyspatch libxz libxdelta3 + # Each library in TARGET_RECOVERY_UPDATER_LIBS should have a function # named "Register_<libname>()". Here we emit a little C function that # gets #included by updater.c. It calls all those registration diff --git a/updater/MODULE_LICENSE_GPL b/updater/MODULE_LICENSE_GPL new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/updater/MODULE_LICENSE_GPL diff --git a/updater/NOTICE b/updater/NOTICE new file mode 100644 index 000000000..e77696ae8 --- /dev/null +++ b/updater/NOTICE @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 675 Mass Ave, Cambridge, MA 02139, USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/updater/install.c b/updater/install.c index aebd4f34b..faa1bb2f5 100644 --- a/updater/install.c +++ b/updater/install.c @@ -45,11 +45,27 @@ #include "mtdutils/mounts.h" #include "mtdutils/mtdutils.h" #include "updater.h" +#include "syspatch.h" +#include "install.h" #ifdef USE_EXT4 #include "make_ext4fs.h" +#include "wipe.h" #endif +// Take a sha-1 digest and return it as a newly-allocated hex string. +static char* PrintSha1(const uint8_t* digest) { + char* buffer = malloc(SHA_DIGEST_SIZE*2 + 1); + int i; + const char* alphabet = "0123456789abcdef"; + for (i = 0; i < SHA_DIGEST_SIZE; ++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 @@ -414,6 +430,54 @@ Value* PackageExtractDirFn(const char* name, State* state, } +DontCareMap* ReadDontCareMapFromZip(ZipArchive* za, const char* path) { + const char* name = "ReadDontCareMapFromZip"; + + const ZipEntry* entry = mzFindZipEntry(za, path); + if (entry == NULL) { + printf("%s: no %s in package\n", name, path); + return NULL; + } + + size_t map_size = mzGetZipEntryUncompLen(entry); + char* map_data = malloc(map_size); + if (map_data == NULL) { + printf("%s: failed to allocate %zu bytes for %s\n", + name, map_size, path); + return NULL; + } + + if (!mzExtractZipEntryToBuffer(za, entry, (unsigned char*) map_data)) { + printf("%s: failed to read %s\n", name, path); + return NULL; + } + + char* p = map_data; + DontCareMap* map = (DontCareMap*) malloc(sizeof(DontCareMap)); + + map->block_size = strtoul(p, &p, 0); + if (map->block_size != 4096) { + printf("%s: unexpected block size %zu\n", name, map->block_size); + return NULL; + } + + map->region_count = strtoul(p, &p, 0); + map->regions = (int*) malloc(map->region_count * sizeof(int)); + + int i; + for (i = 0; i < map->region_count; ++i) { + map->regions[i] = strtoul(p, &p, 0); + } + + return map; +} + +bool MapWriter(const unsigned char* data, int dataLen, void* cookie) { + return write_with_map(data, dataLen, (MapState*) cookie) == dataLen; +} + +// package_extract_file(package_path, destination_path, map_path) +// or // package_extract_file(package_path, destination_path) // or // package_extract_file(package_path) @@ -421,19 +485,30 @@ Value* PackageExtractDirFn(const char* name, State* state, // 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, "%s() expects 1 or 2 args, got %d", + if (argc < 1 || argc > 3) { + return ErrorAbort(state, "%s() expects 1 or 2 or 3 args, got %d", name, argc); } bool success = false; - if (argc == 2) { - // The two-argument version extracts to a file. + if (argc >= 2) { + // The two-argument version extracts to a file; the three-arg + // version extracts to a file, skipping over regions in a + // don't care map. + + 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; + char* map_path = NULL; + DontCareMap* map = NULL; + if (argc == 2) { + if (ReadArgs(state, argv, 2, &zip_path, &dest_path) < 0) return NULL; + } else { + if (ReadArgs(state, argv, 3, &zip_path, &dest_path, &map_path) < 0) return NULL; + map = ReadDontCareMapFromZip(za, map_path); + if (map == NULL) goto done2; + } - 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); @@ -446,12 +521,26 @@ Value* PackageExtractFileFn(const char* name, State* state, name, dest_path, strerror(errno)); goto done2; } - success = mzExtractZipEntryToFile(za, entry, fileno(f)); + if (map) { + MapState state; + state.map = map; + state.cr = 0; + state.so_far = 0; + state.f = f; + success = mzProcessZipEntryContents(za, entry, MapWriter, &state); + } else { + success = mzExtractZipEntryToFile(za, entry, fileno(f)); + } fclose(f); done2: free(zip_path); free(dest_path); + free(map_path); + if (map) { + free(map->regions); + free(map); + } return StringValue(strdup(success ? "t" : "")); } else { // The one-argument version returns the contents of the file @@ -1053,8 +1142,117 @@ Value* ApplyPatchSpaceFn(const char* name, State* state, return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t")); } +bool CheckMappedFileSha1(FILE* f, DontCareMap* map, uint8_t* intended_digest) { + MapState state; + + state.f = f; + state.so_far = 0; + state.cr = 0; + state.map = map; + + SHA_CTX ctx; + SHA_init(&ctx); + + unsigned char buffer[32173]; + size_t bytes_read; + + while ((bytes_read = read_with_map(buffer, sizeof(buffer), &state)) > 0) { + SHA_update(&ctx, buffer, bytes_read); + } + const uint8_t* digest = SHA_final(&ctx); + + return memcmp(digest, intended_digest, SHA_DIGEST_SIZE) == 0; +} + + +// syspatch(file, tgt_mapfile, tgt_sha1, init_mapfile, init_sha1, patch) + +Value* SysPatchFn(const char* name, State* state, int argc, Expr* argv[]) { + if (argc != 6) { + return ErrorAbort(state, "%s(): expected 6 args, got %d", name, argc); + } + + char* filename; + char* target_mapfilename; + char* target_sha1; + char* init_mapfilename; + char* init_sha1; + char* patch_filename; + uint8_t target_digest[SHA_DIGEST_SIZE]; + uint8_t init_digest[SHA_DIGEST_SIZE]; + + if (ReadArgs(state, argv, 6, &filename, + &target_mapfilename, &target_sha1, + &init_mapfilename, &init_sha1, &patch_filename) < 0) { + return NULL; + } + + if (ParseSha1(target_sha1, target_digest) != 0) { + printf("%s(): failed to parse '%s' as target SHA-1", name, target_sha1); + memset(target_digest, 0, SHA_DIGEST_SIZE); + } + if (ParseSha1(init_sha1, init_digest) != 0) { + printf("%s(): failed to parse '%s' as init SHA-1", name, init_sha1); + memset(init_digest, 0, SHA_DIGEST_SIZE); + } + + ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip; + FILE* src = fopen(filename, "r"); + + DontCareMap* init_map = ReadDontCareMapFromZip(za, init_mapfilename); + if (init_map == NULL) return ErrorAbort(state, "%s(): failed to read init map\n", name); + DontCareMap* target_map = ReadDontCareMapFromZip(za, target_mapfilename); + if (target_map == NULL) return ErrorAbort(state, "%s(): failed to read target map\n", name); + + if (CheckMappedFileSha1(src, init_map, init_digest)) { + // If the partition contents match the init_digest, then we need to apply the patch. + + rewind(src); + + const ZipEntry* entry = mzFindZipEntry(za, patch_filename); + if (entry == NULL) { + return ErrorAbort(state, "%s(): no %s in package\n", name, patch_filename); + } + + unsigned char* patch_data; + size_t patch_len; + if (!mzGetStoredEntry(za, entry, &patch_data, &patch_len)) { + return ErrorAbort(state, "%s(): failed to get %s entry\n", name, patch_filename); + } + + FILE* tgt = fopen(filename, "r+"); + + int ret = syspatch(src, init_map, patch_data, patch_len, tgt, target_map); + + fclose(src); + fclose(tgt); + + if (ret != 0) { + return ErrorAbort(state, "%s(): patching failed\n", name); + } + } else { + rewind(src); + if (CheckMappedFileSha1(src, target_map, target_digest)) { + // If the partition contents match the target already, we + // don't need to do anything. + printf("%s: output is already target\n", name); + } else { + return ErrorAbort(state, "%s(): %s in unknown state\n", name, filename); + } + } + + done: + free(target_sha1); + free(target_mapfilename); + free(init_sha1); + free(init_mapfilename); + free(patch_filename); + return StringValue(filename); + +} + +// apply_patch(file, size, init_sha1, tgt_sha1, patch) -// apply_patch(srcfile, tgtfile, tgtsha1, tgtsize, sha1_1, patch_1, ...) Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) { if (argc < 6 || (argc % 2) == 1) { return ErrorAbort(state, "%s(): expected at least 6 args and an " @@ -1239,19 +1437,6 @@ Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) { return StringValue(strdup(buffer)); } -// Take a sha-1 digest and return it as a newly-allocated hex string. -static char* PrintSha1(uint8_t* digest) { - char* buffer = malloc(SHA_DIGEST_SIZE*2 + 1); - int i; - const char* alphabet = "0123456789abcdef"; - for (i = 0; i < SHA_DIGEST_SIZE; ++i) { - buffer[i*2] = alphabet[(digest[i] >> 4) & 0xf]; - buffer[i*2+1] = alphabet[digest[i] & 0xf]; - } - buffer[i*2] = '\0'; - return buffer; -} - // sha1_check(data) // to return the sha1 of the data (given in the format returned by // read_file). @@ -1322,7 +1507,7 @@ Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) { v->type = VAL_BLOB; FileContents fc; - if (LoadFileContents(filename, &fc, RETOUCH_DONT_MASK) != 0) { + if (LoadFileContents(filename, &fc) != 0) { free(filename); v->size = -1; v->data = NULL; @@ -1419,7 +1604,7 @@ Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) { // 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 != 2) { + if (argc != 1) { return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc); } @@ -1436,6 +1621,27 @@ Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) { return StringValue(strdup(buffer)); } +Value* WipeBlockDeviceFn(const char* name, State* state, int argc, Expr* argv[]) { + if (argc != 2) { + return ErrorAbort(state, "%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 = strtoull(len_str, NULL, 0); + int fd = open(filename, O_WRONLY, 0644); + int success = wipe_block_device(fd, len); + + free(filename); + free(len_str); + + close(fd); + + return StringValue(strdup(success ? "t" : "")); +} + void RegisterInstallFunctions() { RegisterFunction("mount", MountFn); RegisterFunction("is_mounted", IsMountedFn); @@ -1469,6 +1675,9 @@ void RegisterInstallFunctions() { RegisterFunction("apply_patch_check", ApplyPatchCheckFn); RegisterFunction("apply_patch_space", ApplyPatchSpaceFn); + RegisterFunction("wipe_block_device", WipeBlockDeviceFn); + RegisterFunction("syspatch", SysPatchFn); + RegisterFunction("read_file", ReadFileFn); RegisterFunction("sha1_check", Sha1CheckFn); RegisterFunction("rename", RenameFn); diff --git a/updater/updater.c b/updater/updater.c index c7009feac..b7af3e500 100644 --- a/updater/updater.c +++ b/updater/updater.c @@ -22,6 +22,7 @@ #include "updater.h" #include "install.h" #include "minzip/Zip.h" +#include "minzip/SysUtil.h" // Generated by the makefile, this function defines the // RegisterDeviceExtensions() function, which calls all the @@ -65,19 +66,24 @@ int main(int argc, char** argv) { // Extract the script from the package. - char* package_data = argv[3]; + const char* package_filename = argv[3]; + MemMapping map; + if (sysMapFile(package_filename, &map) != 0) { + printf("failed to map package %s\n", argv[3]); + return 3; + } ZipArchive za; int err; - err = mzOpenZipArchive(package_data, &za); + err = mzOpenZipArchive(map.addr, map.length, &za); if (err != 0) { printf("failed to open package %s: %s\n", - package_data, strerror(err)); + argv[3], strerror(err)); return 3; } const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME); if (script_entry == NULL) { - printf("failed to find %s in %s\n", SCRIPT_NAME, package_data); + printf("failed to find %s in %s\n", SCRIPT_NAME, package_filename); return 4; } @@ -99,8 +105,7 @@ int main(int argc, char** argv) { Expr* root; int error_count = 0; - yy_scan_string(script); - int error = yyparse(&root, &error_count); + int error = parse_string(script, &root, &error_count); if (error != 0 || error_count > 0) { printf("%d parse errors\n", error_count); return 6; @@ -152,6 +157,7 @@ int main(int argc, char** argv) { if (updater_info.package_zip) { mzCloseZipArchive(updater_info.package_zip); } + sysReleaseMap(&map); free(script); return 0; |