1 files changed, 108 insertions, 0 deletions
diff --git a/toolkit/crashreporter/breakpad-client/linux/handler/guid_generator.cc b/toolkit/crashreporter/breakpad-client/linux/handler/guid_generator.cc
new file mode 100644
index 0000000000..b0ef05bd9d
--- /dev/null
+++ b/toolkit/crashreporter/breakpad-client/linux/handler/guid_generator.cc
@@ -0,0 +1,108 @@
+// 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.
+
+#include "linux/handler/guid_generator.h"
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+//
+// GUIDGenerator
+//
+// This class is used to generate random GUID.
+// Currently use random number to generate a GUID since Linux has
+// no native GUID generator. This should be OK since we don't expect
+// crash to happen very offen.
+//
+class GUIDGenerator {
+ public:
+  static uint16_t BytesToUInt16(const uint8_t bytes[]) {
+    return ((uint16_t) bytes[1] << 8) | ((uint16_t) bytes[0]);
+  }
+
+  // The last field in a GUID is 48 bits long so we're converting only 6 bytes
+  static uint64_t BytesToUInt48(const uint8_t bytes[]) {
+    return ((uint64_t) bytes[0] << 40) | ((uint64_t) bytes[1] << 32) |
+           ((uint64_t) bytes[2] << 24) | ((uint64_t) bytes[3] << 16) |
+           ((uint64_t) bytes[4] << 8)  | (uint64_t) bytes[5];
+  }
+
+  static void UInt32ToBytes(uint8_t bytes[], uint32_t n) {
+    bytes[0] = n & 0xff;
+    bytes[1] = (n >> 8) & 0xff;
+    bytes[2] = (n >> 16) & 0xff;
+    bytes[3] = (n >> 24) & 0xff;
+  }
+
+  static bool CreateGUID(GUID *guid) {
+    InitOnce();
+    guid->data1 = random();
+    guid->data2 = (uint16_t)(random());
+    guid->data3 = (uint16_t)(random());
+    UInt32ToBytes(&guid->data4[0], random());
+    UInt32ToBytes(&guid->data4[4], random());
+    return true;
+  }
+
+ private:
+  static void InitOnce() {
+    pthread_once(&once_control, &InitOnceImpl);
+  }
+
+  static void InitOnceImpl() {
+    srandom(time(NULL));
+  }
+
+  static pthread_once_t once_control;
+};
+
+pthread_once_t GUIDGenerator::once_control = PTHREAD_ONCE_INIT;
+
+bool CreateGUID(GUID *guid) {
+  return GUIDGenerator::CreateGUID(guid);
+}
+
+// Parse guid to string.
+bool GUIDToString(const GUID *guid, char *buf, size_t buf_len) {
+  // Should allow more space the the max length of GUID.
+  assert(buf_len > kGUIDStringLength);
+  int num = snprintf(buf, buf_len, kGUIDFormatString,
+                     guid->data1, guid->data2, guid->data3,
+                     GUIDGenerator::BytesToUInt16(&(guid->data4[0])),
+                     GUIDGenerator::BytesToUInt48(&(guid->data4[2])));
+  if (num != kGUIDStringLength)
+    return false;
+
+  buf[num] = '\0';
+  return true;
+}