diff options
Diffstat (limited to 'applypatch/applypatch.c')
| -rw-r--r-- | applypatch/applypatch.c | 35 |
1 files changed, 8 insertions, 27 deletions
diff --git a/applypatch/applypatch.c b/applypatch/applypatch.c index cb9bc23..c9c40c9 100644 --- a/applypatch/applypatch.c +++ b/applypatch/applypatch.c @@ -24,6 +24,7 @@ #include <sys/types.h> #include <fcntl.h> #include <unistd.h> +#include <stdbool.h> #include "mincrypt/sha.h" #include "applypatch.h" @@ -44,14 +45,11 @@ static int GenerateTarget(FileContents* source_file, static int mtd_partitions_scanned = 0; -// Read a file into memory; optionally (retouch_flag == RETOUCH_DO_MASK) mask -// the retouched entries back to their original value (such that SHA-1 checks -// don't fail due to randomization); store the file contents and associated +// Read a file into memory; store the file contents and associated // metadata in *file. // // Return 0 on success. -int LoadFileContents(const char* filename, FileContents* file, - int retouch_flag) { +int LoadFileContents(const char* filename, FileContents* file) { file->data = NULL; // A special 'filename' beginning with "MTD:" or "EMMC:" means to @@ -87,20 +85,6 @@ int LoadFileContents(const char* filename, FileContents* file, } fclose(f); - // apply_patch[_check] functions are blind to randomization. Randomization - // is taken care of in [Undo]RetouchBinariesFn. If there is a mismatch - // within a file, this means the file is assumed "corrupt" for simplicity. - if (retouch_flag) { - int32_t desired_offset = 0; - if (retouch_mask_data(file->data, file->size, - &desired_offset, NULL) != RETOUCH_DATA_MATCHED) { - printf("error trying to mask retouch entries\n"); - free(file->data); - file->data = NULL; - return -1; - } - } - SHA_hash(file->data, file->size, file->sha1); return 0; } @@ -579,7 +563,7 @@ int applypatch_check(const char* filename, // LoadFileContents is successful. (Useful for reading // partitions, where the filename encodes the sha1s; no need to // check them twice.) - if (LoadFileContents(filename, &file, RETOUCH_DO_MASK) != 0 || + if (LoadFileContents(filename, &file) != 0 || (num_patches > 0 && FindMatchingPatch(file.sha1, patch_sha1_str, num_patches) < 0)) { printf("file \"%s\" doesn't have any of expected " @@ -594,7 +578,7 @@ int applypatch_check(const char* filename, // exists and matches the sha1 we're looking for, the check still // passes. - if (LoadFileContents(CACHE_TEMP_SOURCE, &file, RETOUCH_DO_MASK) != 0) { + if (LoadFileContents(CACHE_TEMP_SOURCE, &file) != 0) { printf("failed to load cache file\n"); return 1; } @@ -730,8 +714,7 @@ int applypatch(const char* source_filename, const Value* copy_patch_value = NULL; // We try to load the target file into the source_file object. - if (LoadFileContents(target_filename, &source_file, - RETOUCH_DO_MASK) == 0) { + if (LoadFileContents(target_filename, &source_file) == 0) { if (memcmp(source_file.sha1, target_sha1, SHA_DIGEST_SIZE) == 0) { // The early-exit case: the patch was already applied, this file // has the desired hash, nothing for us to do. @@ -750,8 +733,7 @@ int applypatch(const char* source_filename, // target file, or we did but it's different from the source file. free(source_file.data); source_file.data = NULL; - LoadFileContents(source_filename, &source_file, - RETOUCH_DO_MASK); + LoadFileContents(source_filename, &source_file); } if (source_file.data != NULL) { @@ -767,8 +749,7 @@ int applypatch(const char* source_filename, source_file.data = NULL; printf("source file is bad; trying copy\n"); - if (LoadFileContents(CACHE_TEMP_SOURCE, ©_file, - RETOUCH_DO_MASK) < 0) { + if (LoadFileContents(CACHE_TEMP_SOURCE, ©_file) < 0) { // fail. printf("failed to read copy file\n"); return 1; |