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-rw-r--r--tools/applypatch/xdelta3.c121
1 files changed, 0 insertions, 121 deletions
diff --git a/tools/applypatch/xdelta3.c b/tools/applypatch/xdelta3.c
deleted file mode 100644
index c9a0f73..0000000
--- a/tools/applypatch/xdelta3.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include "xdelta3.h"
-#include "mincrypt/sha.h"
-
-int ApplyXDelta3Patch(const unsigned char* old_data, ssize_t old_size,
- const char* patch_filename,
- FILE* output, SHA_CTX* ctx) {
-#define WINDOW_SIZE 32768
-
- int ret;
- xd3_stream stream;
- xd3_config config;
-
- xd3_init_config(&config, 0);
- config.winsize = WINDOW_SIZE;
- ret = xd3_config_stream(&stream, &config);
- if (ret != 0) {
- fprintf(stderr, "xd3_config_stream error: %s\n", xd3_strerror(ret));
- return 1;
- }
-
- // In xdelta3 terms, the "input" is the patch file: it contains a
- // sequence of instruction codes and data that will be executed to
- // produce the output file. The "source" is the original data file;
- // it is a blob of data to which instructions in the input may refer
- // (eg, an instruction may say "copy such-and-such range of bytes
- // from the source to the output").
-
- // For simplicity, we provide the entire source to xdelta as a
- // single block. This means it should never have to ask us to load
- // blocks of the source file.
- xd3_source source;
- source.name = "old name";
- source.size = old_size;
- source.ioh = NULL;
- source.blksize = old_size;
- source.curblkno = 0;
- source.curblk = old_data;
- source.onblk = old_size;
-
- ret = xd3_set_source(&stream, &source);
- if (ret != 0) {
- fprintf(stderr, "xd3_set_source error: %s\n", xd3_strerror(ret));
- return 1;
- }
-
- unsigned char buffer[WINDOW_SIZE];
- FILE* input = fopen(patch_filename, "rb");
- if (input == NULL) {
- fprintf(stderr, "failed to open patch file %s: %d (%s)\n",
- patch_filename, errno, strerror(errno));
- return 1;
- }
-
- size_t bytes_read;
-
- do {
- bytes_read = fread(buffer, 1, WINDOW_SIZE, input);
- if (feof(input)) {
- xd3_set_flags(&stream, XD3_FLUSH);
- }
- xd3_avail_input(&stream, buffer, bytes_read);
- process:
- ret = xd3_decode_input(&stream);
- switch (ret) {
- case XD3_INPUT:
- continue;
- case XD3_OUTPUT:
- SHA_update(ctx, stream.next_out, stream.avail_out);
- if (fwrite(stream.next_out, 1, stream.avail_out, output) !=
- stream.avail_out) {
- fprintf(stderr, "short write of output file: %d (%s)\n",
- errno, strerror(errno));
- return 1;
- }
- xd3_consume_output(&stream);
- goto process;
- case XD3_GETSRCBLK:
- // We provided the entire source file already; it should never
- // have to ask us for a block.
- fprintf(stderr, "xd3_decode_input: unexpected GETSRCBLK\n");
- return 1;
- case XD3_GOTHEADER:
- case XD3_WINSTART:
- case XD3_WINFINISH:
- // These are informational events we don't care about.
- goto process;
- default:
- fprintf(stderr, "xd3_decode_input: unknown error %s (%s)\n",
- xd3_strerror(ret), stream.msg);
- return 1;
- }
- } while (!feof(input));
-
- fclose(input);
- return 0;
-
-#undef WINDOW_SIZE
-}