The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/toolkit/crashreporter/google-breakpad/src/common/linux/guid_creator.cc	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,104 @@
     1.4 +// Copyright (c) 2006, Google Inc.
     1.5 +// All rights reserved.
     1.6 +//
     1.7 +// Redistribution and use in source and binary forms, with or without
     1.8 +// modification, are permitted provided that the following conditions are
     1.9 +// met:
    1.10 +//
    1.11 +//     * Redistributions of source code must retain the above copyright
    1.12 +// notice, this list of conditions and the following disclaimer.
    1.13 +//     * Redistributions in binary form must reproduce the above
    1.14 +// copyright notice, this list of conditions and the following disclaimer
    1.15 +// in the documentation and/or other materials provided with the
    1.16 +// distribution.
    1.17 +//     * Neither the name of Google Inc. nor the names of its
    1.18 +// contributors may be used to endorse or promote products derived from
    1.19 +// this software without specific prior written permission.
    1.20 +//
    1.21 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    1.22 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    1.23 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    1.24 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    1.25 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    1.26 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    1.27 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    1.28 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    1.29 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    1.30 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    1.31 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.32 +
    1.33 +#include "common/linux/guid_creator.h"
    1.34 +
    1.35 +#include <assert.h>
    1.36 +#include <pthread.h>
    1.37 +#include <stdio.h>
    1.38 +#include <stdlib.h>
    1.39 +#include <time.h>
    1.40 +#include <unistd.h>
    1.41 +
    1.42 +//
    1.43 +// GUIDGenerator
    1.44 +//
    1.45 +// This class is used to generate random GUID.
    1.46 +// Currently use random number to generate a GUID since Linux has
    1.47 +// no native GUID generator. This should be OK since we don't expect
    1.48 +// crash to happen very offen.
    1.49 +//
    1.50 +class GUIDGenerator {
    1.51 + public:
    1.52 +  static uint32_t BytesToUInt32(const uint8_t bytes[]) {
    1.53 +    return ((uint32_t) bytes[0]
    1.54 +            | ((uint32_t) bytes[1] << 8)
    1.55 +            | ((uint32_t) bytes[2] << 16)
    1.56 +            | ((uint32_t) bytes[3] << 24));
    1.57 +  }
    1.58 +
    1.59 +  static void UInt32ToBytes(uint8_t bytes[], uint32_t n) {
    1.60 +    bytes[0] = n & 0xff;
    1.61 +    bytes[1] = (n >> 8) & 0xff;
    1.62 +    bytes[2] = (n >> 16) & 0xff;
    1.63 +    bytes[3] = (n >> 24) & 0xff;
    1.64 +  }
    1.65 +
    1.66 +  static bool CreateGUID(GUID *guid) {
    1.67 +    InitOnce();
    1.68 +    guid->data1 = random();
    1.69 +    guid->data2 = (uint16_t)(random());
    1.70 +    guid->data3 = (uint16_t)(random());
    1.71 +    UInt32ToBytes(&guid->data4[0], random());
    1.72 +    UInt32ToBytes(&guid->data4[4], random());
    1.73 +    return true;
    1.74 +  }
    1.75 +
    1.76 + private:
    1.77 +  static void InitOnce() {
    1.78 +    pthread_once(&once_control, &InitOnceImpl);
    1.79 +  }
    1.80 +
    1.81 +  static void InitOnceImpl() {
    1.82 +    srandom(time(NULL));
    1.83 +  }
    1.84 +
    1.85 +  static pthread_once_t once_control;
    1.86 +};
    1.87 +
    1.88 +pthread_once_t GUIDGenerator::once_control = PTHREAD_ONCE_INIT;
    1.89 +
    1.90 +bool CreateGUID(GUID *guid) {
    1.91 +  return GUIDGenerator::CreateGUID(guid);
    1.92 +}
    1.93 +
    1.94 +// Parse guid to string.
    1.95 +bool GUIDToString(const GUID *guid, char *buf, int buf_len) {
    1.96 +  // Should allow more space the the max length of GUID.
    1.97 +  assert(buf_len > kGUIDStringLength);
    1.98 +  int num = snprintf(buf, buf_len, kGUIDFormatString,
    1.99 +                     guid->data1, guid->data2, guid->data3,
   1.100 +                     GUIDGenerator::BytesToUInt32(&(guid->data4[0])),
   1.101 +                     GUIDGenerator::BytesToUInt32(&(guid->data4[4])));
   1.102 +  if (num != kGUIDStringLength)
   1.103 +    return false;
   1.104 +
   1.105 +  buf[num] = '\0';
   1.106 +  return true;
   1.107 +}