First round of dead file removal

obsolete/breakpad/common/mac/file_id.cc

-// Copyright (c) 2006, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * 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.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "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 COPYRIGHT
-// OWNER OR CONTRIBUTORS 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.
-
-// file_id.cc: Return a unique identifier for a file
-//
-// See file_id.h for documentation
-//
-// Author: Dan Waylonis
-
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common/mac/file_id.h"
-#include "common/mac/macho_id.h"
-
-using MacFileUtilities::MachoID;
-
-namespace google_breakpad {
-
-FileID::FileID(const char *path) {
-  strlcpy(path_, path, sizeof(path_));
-}
-
-bool FileID::FileIdentifier(unsigned char identifier[16]) {
-  int fd = open(path_, O_RDONLY);
-  if (fd == -1)
-    return false;
-
-  MD5_CTX md5;
-  MD5_Init(&md5);
-
-  // Read 4k x 2 bytes at a time.  This is faster than just 4k bytes, but
-  // doesn't seem to be an unreasonable size for the stack.
-  unsigned char buffer[4096 * 2];
-  size_t buffer_size = sizeof(buffer);
-  while ((buffer_size = read(fd, buffer, buffer_size) > 0)) {
-    MD5_Update(&md5, buffer, buffer_size);
-  }
-
-  close(fd);
-  MD5_Final(identifier, &md5);
-
-  return true;
-}
-
-bool FileID::MachoIdentifier(int cpu_type, unsigned char identifier[16]) {
-  MachoID macho(path_);
-
-  if (macho.UUIDCommand(cpu_type, identifier))
-    return true;
-
-  return macho.MD5(cpu_type, identifier);
-}
-
-// static
-void FileID::ConvertIdentifierToString(const unsigned char identifier[16],
-                                       char *buffer, int buffer_length) {
-  int buffer_idx = 0;
-  for (int idx = 0; (buffer_idx < buffer_length) && (idx < 16); ++idx) {
-    int hi = (identifier[idx] >> 4) & 0x0F;
-    int lo = (identifier[idx]) & 0x0F;
-
-    if (idx == 4 || idx == 6 || idx == 8 || idx == 10)
-      buffer[buffer_idx++] = '-';
-
-    buffer[buffer_idx++] = (hi >= 10) ? 'A' + hi - 10 : '0' + hi;
-    buffer[buffer_idx++] = (lo >= 10) ? 'A' + lo - 10 : '0' + lo;
-  }
-
-  // NULL terminate
-  buffer[(buffer_idx < buffer_length) ? buffer_idx : buffer_idx - 1] = 0;
-}
-
-}  // namespace google_breakpad