/thirdparty/breakpad/common/solaris/guid_creator.cc

http://github.com/tomahawk-player/tomahawk · C++ · 84 lines · 35 code · 10 blank · 39 comment · 2 complexity · 0f1930071d1aad21736dc77707600d74 MD5 · raw file

  1. // Copyright (c) 2007, Google Inc.
  2. // All rights reserved.
  3. //
  4. // Redistribution and use in source and binary forms, with or without
  5. // modification, are permitted provided that the following conditions are
  6. // met:
  7. //
  8. // * Redistributions of source code must retain the above copyright
  9. // notice, this list of conditions and the following disclaimer.
  10. // * Redistributions in binary form must reproduce the above
  11. // copyright notice, this list of conditions and the following disclaimer
  12. // in the documentation and/or other materials provided with the
  13. // distribution.
  14. // * Neither the name of Google Inc. nor the names of its
  15. // contributors may be used to endorse or promote products derived from
  16. // this software without specific prior written permission.
  17. //
  18. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. // Author: Alfred Peng
  30. #include <cassert>
  31. #include <ctime>
  32. #include <stdio.h>
  33. #include <stdlib.h>
  34. #include <unistd.h>
  35. #include "common/solaris/guid_creator.h"
  36. //
  37. // GUIDGenerator
  38. //
  39. // This class is used to generate random GUID.
  40. // Currently use random number to generate a GUID. This should be OK since
  41. // we don't expect crash to happen very offen.
  42. //
  43. class GUIDGenerator {
  44. public:
  45. GUIDGenerator() {
  46. srandom(time(NULL));
  47. }
  48. bool CreateGUID(GUID *guid) const {
  49. guid->data1 = random();
  50. guid->data2 = (u_int16_t)(random());
  51. guid->data3 = (u_int16_t)(random());
  52. *reinterpret_cast<u_int32_t*>(&guid->data4[0]) = random();
  53. *reinterpret_cast<u_int32_t*>(&guid->data4[4]) = random();
  54. return true;
  55. }
  56. };
  57. // Guid generator.
  58. const GUIDGenerator kGuidGenerator;
  59. bool CreateGUID(GUID *guid) {
  60. return kGuidGenerator.CreateGUID(guid);
  61. };
  62. // Parse guid to string.
  63. bool GUIDToString(const GUID *guid, char *buf, int buf_len) {
  64. // Should allow more space the the max length of GUID.
  65. assert(buf_len > kGUIDStringLength);
  66. int num = snprintf(buf, buf_len, kGUIDFormatString,
  67. guid->data1, guid->data2, guid->data3,
  68. *reinterpret_cast<const u_int32_t *>(&(guid->data4[0])),
  69. *reinterpret_cast<const u_int32_t *>(&(guid->data4[4])));
  70. if (num != kGUIDStringLength)
  71. return false;
  72. buf[num] = '\0';
  73. return true;
  74. }