Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 216 insertions, 0 deletions

diff --git a/toolkit/mozapps/update/updater/bspatch/bspatch.cpp b/toolkit/mozapps/update/updater/bspatch/bspatch.cpp
new file mode 100644
index 0000000000..8eabd0e427
--- /dev/null
+++ b/toolkit/mozapps/update/updater/bspatch/bspatch.cpp
@@ -0,0 +1,216 @@
+/*-
+ * Copyright 2003,2004 Colin Percival
+ * All rights reserved
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted providing that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Changelog:
+ * 2005-04-26 - Define the header as a C structure, add a CRC32 checksum to
+ *              the header, and make all the types 32-bit.
+ *                --Benjamin Smedberg <benjamin@smedbergs.us>
+ */
+
+#include "bspatch.h"
+#include "updatererrors.h"
+
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+
+#if defined(XP_WIN)
+#  include <io.h>
+#endif
+
+#ifdef XP_WIN
+#  include <winsock2.h>
+#else
+#  include <arpa/inet.h>
+#endif
+
+#ifndef SSIZE_MAX
+#  define SSIZE_MAX LONG_MAX
+#endif
+
+int MBS_ReadHeader(FILE* file, MBSPatchHeader* header) {
+  size_t s = fread(header, 1, sizeof(MBSPatchHeader), file);
+  if (s != sizeof(MBSPatchHeader)) {
+    return READ_ERROR;
+  }
+
+  header->slen = ntohl(header->slen);
+  header->scrc32 = ntohl(header->scrc32);
+  header->dlen = ntohl(header->dlen);
+  header->cblen = ntohl(header->cblen);
+  header->difflen = ntohl(header->difflen);
+  header->extralen = ntohl(header->extralen);
+
+  struct stat hs;
+  s = fstat(fileno(file), &hs);
+  if (s != 0) {
+    return READ_ERROR;
+  }
+
+  if (memcmp(header->tag, "MBDIFF10", 8) != 0) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+
+  if (hs.st_size > INT_MAX) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+
+  size_t size = static_cast<size_t>(hs.st_size);
+  if (size < sizeof(MBSPatchHeader)) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+  size -= sizeof(MBSPatchHeader);
+
+  if (size < header->cblen) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+  size -= header->cblen;
+
+  if (size < header->difflen) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+  size -= header->difflen;
+
+  if (size < header->extralen) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+  size -= header->extralen;
+
+  if (size != 0) {
+    return UNEXPECTED_BSPATCH_ERROR;
+  }
+
+  return OK;
+}
+
+int MBS_ApplyPatch(const MBSPatchHeader* header, FILE* patchFile,
+                   unsigned char* fbuffer, FILE* file) {
+  unsigned char* fbufstart = fbuffer;
+  unsigned char* fbufend = fbuffer + header->slen;
+
+  unsigned char* buf = (unsigned char*)malloc(header->cblen + header->difflen +
+                                              header->extralen);
+  if (!buf) {
+    return BSPATCH_MEM_ERROR;
+  }
+
+  int rv = OK;
+
+  size_t r = header->cblen + header->difflen + header->extralen;
+  unsigned char* wb = buf;
+  while (r) {
+    const size_t count = (r > SSIZE_MAX) ? SSIZE_MAX : r;
+    size_t c = fread(wb, 1, count, patchFile);
+    if (c != count) {
+      rv = READ_ERROR;
+      goto end;
+    }
+
+    r -= c;
+    wb += c;
+
+    if (c == 0 && r) {
+      rv = UNEXPECTED_BSPATCH_ERROR;
+      goto end;
+    }
+  }
+
+  {
+    MBSPatchTriple* ctrlsrc = (MBSPatchTriple*)buf;
+    if (header->cblen % sizeof(MBSPatchTriple) != 0) {
+      rv = UNEXPECTED_BSPATCH_ERROR;
+      goto end;
+    }
+
+    unsigned char* diffsrc = buf + header->cblen;
+    unsigned char* extrasrc = diffsrc + header->difflen;
+
+    MBSPatchTriple* ctrlend = (MBSPatchTriple*)diffsrc;
+    unsigned char* diffend = extrasrc;
+    unsigned char* extraend = extrasrc + header->extralen;
+
+    while (ctrlsrc < ctrlend) {
+      ctrlsrc->x = ntohl(ctrlsrc->x);
+      ctrlsrc->y = ntohl(ctrlsrc->y);
+      ctrlsrc->z = ntohl(ctrlsrc->z);
+
+#ifdef DEBUG_bsmedberg
+      printf(
+          "Applying block:\n"
+          " x: %u\n"
+          " y: %u\n"
+          " z: %i\n",
+          ctrlsrc->x, ctrlsrc->y, ctrlsrc->z);
+#endif
+
+      /* Add x bytes from oldfile to x bytes from the diff block */
+
+      if (ctrlsrc->x > static_cast<size_t>(fbufend - fbuffer) ||
+          ctrlsrc->x > static_cast<size_t>(diffend - diffsrc)) {
+        rv = UNEXPECTED_BSPATCH_ERROR;
+        goto end;
+      }
+      for (uint32_t i = 0; i < ctrlsrc->x; ++i) {
+        diffsrc[i] += fbuffer[i];
+      }
+      if ((uint32_t)fwrite(diffsrc, 1, ctrlsrc->x, file) != ctrlsrc->x) {
+        rv = WRITE_ERROR_PATCH_FILE;
+        goto end;
+      }
+      fbuffer += ctrlsrc->x;
+      diffsrc += ctrlsrc->x;
+
+      /* Copy y bytes from the extra block */
+
+      if (ctrlsrc->y > static_cast<size_t>(extraend - extrasrc)) {
+        rv = UNEXPECTED_BSPATCH_ERROR;
+        goto end;
+      }
+      if ((uint32_t)fwrite(extrasrc, 1, ctrlsrc->y, file) != ctrlsrc->y) {
+        rv = WRITE_ERROR_PATCH_FILE;
+        goto end;
+      }
+      extrasrc += ctrlsrc->y;
+
+      /* "seek" forwards in oldfile by z bytes */
+
+      if (ctrlsrc->z < fbufstart - fbuffer || ctrlsrc->z > fbufend - fbuffer) {
+        rv = UNEXPECTED_BSPATCH_ERROR;
+        goto end;
+      }
+      fbuffer += ctrlsrc->z;
+
+      /* and on to the next control block */
+
+      ++ctrlsrc;
+    }
+  }
+
+end:
+  free(buf);
+  return rv;
+}