summaryrefslogtreecommitdiffstats
path: root/applypatch/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'applypatch/main.c')
-rw-r--r--applypatch/main.c214
1 files changed, 0 insertions, 214 deletions
diff --git a/applypatch/main.c b/applypatch/main.c
deleted file mode 100644
index 8e9fe80ef..000000000
--- a/applypatch/main.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "applypatch.h"
-#include "edify/expr.h"
-#include "mincrypt/sha.h"
-
-int CheckMode(int argc, char** argv) {
- if (argc < 3) {
- return 2;
- }
- return applypatch_check(argv[2], argc-3, argv+3);
-}
-
-int SpaceMode(int argc, char** argv) {
- if (argc != 3) {
- return 2;
- }
- char* endptr;
- size_t bytes = strtol(argv[2], &endptr, 10);
- if (bytes == 0 && endptr == argv[2]) {
- printf("can't parse \"%s\" as byte count\n\n", argv[2]);
- return 1;
- }
- return CacheSizeCheck(bytes);
-}
-
-// Parse arguments (which should be of the form "<sha1>" or
-// "<sha1>:<filename>" into the new parallel arrays *sha1s and
-// *patches (loading file contents into the patches). Returns 0 on
-// success.
-static int ParsePatchArgs(int argc, char** argv,
- char*** sha1s, Value*** patches, int* num_patches) {
- *num_patches = argc;
- *sha1s = malloc(*num_patches * sizeof(char*));
- *patches = malloc(*num_patches * sizeof(Value*));
- memset(*patches, 0, *num_patches * sizeof(Value*));
-
- uint8_t digest[SHA_DIGEST_SIZE];
-
- int i;
- for (i = 0; i < *num_patches; ++i) {
- char* colon = strchr(argv[i], ':');
- if (colon != NULL) {
- *colon = '\0';
- ++colon;
- }
-
- if (ParseSha1(argv[i], digest) != 0) {
- printf("failed to parse sha1 \"%s\"\n", argv[i]);
- return -1;
- }
-
- (*sha1s)[i] = argv[i];
- if (colon == NULL) {
- (*patches)[i] = NULL;
- } else {
- FileContents fc;
- if (LoadFileContents(colon, &fc) != 0) {
- goto abort;
- }
- (*patches)[i] = malloc(sizeof(Value));
- (*patches)[i]->type = VAL_BLOB;
- (*patches)[i]->size = fc.size;
- (*patches)[i]->data = (char*)fc.data;
- }
- }
-
- return 0;
-
- abort:
- for (i = 0; i < *num_patches; ++i) {
- Value* p = (*patches)[i];
- if (p != NULL) {
- free(p->data);
- free(p);
- }
- }
- free(*sha1s);
- free(*patches);
- return -1;
-}
-
-int PatchMode(int argc, char** argv) {
- Value* bonus = NULL;
- if (argc >= 3 && strcmp(argv[1], "-b") == 0) {
- FileContents fc;
- if (LoadFileContents(argv[2], &fc) != 0) {
- printf("failed to load bonus file %s\n", argv[2]);
- return 1;
- }
- bonus = malloc(sizeof(Value));
- bonus->type = VAL_BLOB;
- bonus->size = fc.size;
- bonus->data = (char*)fc.data;
- argc -= 2;
- argv += 2;
- }
-
- if (argc < 6) {
- return 2;
- }
-
- char* endptr;
- size_t target_size = strtol(argv[4], &endptr, 10);
- if (target_size == 0 && endptr == argv[4]) {
- printf("can't parse \"%s\" as byte count\n\n", argv[4]);
- return 1;
- }
-
- char** sha1s;
- Value** patches;
- int num_patches;
- if (ParsePatchArgs(argc-5, argv+5, &sha1s, &patches, &num_patches) != 0) {
- printf("failed to parse patch args\n");
- return 1;
- }
-
- int result = applypatch(argv[1], argv[2], argv[3], target_size,
- num_patches, sha1s, patches, bonus);
-
- int i;
- for (i = 0; i < num_patches; ++i) {
- Value* p = patches[i];
- if (p != NULL) {
- free(p->data);
- free(p);
- }
- }
- if (bonus) {
- free(bonus->data);
- free(bonus);
- }
- free(sha1s);
- free(patches);
-
- return result;
-}
-
-// This program applies binary patches to 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 sha1 hash of <tgt-file> is <tgt-sha1>, does nothing and exits
-// successfully.
-//
-// - otherwise, if the sha1 hash of <src-file> is <src-sha1>, applies the
-// bsdiff <patch> to <src-file> to produce a new file (the type of patch
-// is automatically detected from the file header). If that new
-// file has sha1 hash <tgt-sha1>, moves it to replace <tgt-file>, and
-// exits successfully. Note that if <src-file> and <tgt-file> are
-// not the same, <src-file> is NOT deleted on success. <tgt-file>
-// may be the string "-" to mean "the same as src-file".
-//
-// - otherwise, or if any error is encountered, exits with non-zero
-// status.
-//
-// <src-file> (or <file> in check mode) may refer to an MTD partition
-// to read the source data. See the comments for the
-// LoadMTDContents() function above for the format of such a filename.
-
-int main(int argc, char** argv) {
- if (argc < 2) {
- usage:
- printf(
- "usage: %s [-b <bonus-file>] <src-file> <tgt-file> <tgt-sha1> <tgt-size> "
- "[<src-sha1>:<patch> ...]\n"
- " or %s -c <file> [<sha1> ...]\n"
- " or %s -s <bytes>\n"
- " or %s -l\n"
- "\n"
- "Filenames may be of the form\n"
- " MTD:<partition>:<len_1>:<sha1_1>:<len_2>:<sha1_2>:...\n"
- "to specify reading from or writing to an MTD partition.\n\n",
- argv[0], argv[0], argv[0], argv[0]);
- return 2;
- }
-
- int result;
-
- if (strncmp(argv[1], "-l", 3) == 0) {
- result = ShowLicenses();
- } else if (strncmp(argv[1], "-c", 3) == 0) {
- result = CheckMode(argc, argv);
- } else if (strncmp(argv[1], "-s", 3) == 0) {
- result = SpaceMode(argc, argv);
- } else {
- result = PatchMode(argc, argv);
- }
-
- if (result == 2) {
- goto usage;
- }
- return result;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 08:53:19 +0200