crashpad/util/misc/uuid.cc
Mark Mentovai 79177046d3 Mac 10.6 SDK compatibility.
A couple of the problems related to not having a C++11 library:

 - You can’t put const elements into a std::vector<>, so
   CrashReportDatabase::GetPendingReports() and
   CrashReportDatabase::GetCompletedReports() need to change. There was
   no data-safety benefit to const elements.
 - std::string::pop_back() does not exist, another mechanism must be
   used to trim strings in BreakpadHTTPFormParametersFromMinidump().

One relates to a feature that does not exist in 10.6:

 - The O_CLOEXEC flag to open() was introduced in 10.7. Although it
   would be possible to use fcntl(..., F_SETFD, FD_CLOEXEC) on 10.6, the
   O_CLOEXEC behavior is just removed from
   CrashReportDatabaseMac::ObtainReportLock(), in line with other open()
   calls in Crashpad.

And one was a real bug:

 - #define __STDC_FORMAT_MACROS before #including <inttypes.h> to get
   format macros like SCNx32, used in UUID::InitializeFromString().

TEST=* (gyp_crashpad.py -Dmac_sdk=10.6 -Dmac_deployment_target=10.6)
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/987693004
2015-03-06 18:43:28 -05:00

113 lines
3.1 KiB
C++

// Copyright 2014 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#if !defined(__STDC_FORMAT_MACROS)
#define __STDC_FORMAT_MACROS
#endif
#include "util/misc/uuid.h"
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include "base/basictypes.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/sys_byteorder.h"
#include "util/stdlib/cxx.h"
#if CXX_LIBRARY_VERSION >= 2011
#include <type_traits>
#endif
namespace crashpad {
static_assert(sizeof(UUID) == 16, "UUID must be 16 bytes");
#if CXX_LIBRARY_VERSION >= 2011
static_assert(std::is_standard_layout<UUID>::value,
"UUID must be standard layout");
#endif
UUID::UUID() : data_1(0), data_2(0), data_3(0), data_4(), data_5() {
}
UUID::UUID(const uint8_t* bytes) {
InitializeFromBytes(bytes);
}
bool UUID::operator==(const UUID& that) const {
return memcmp(this, &that, sizeof(UUID)) == 0;
}
void UUID::InitializeFromBytes(const uint8_t* bytes) {
memcpy(this, bytes, sizeof(*this));
data_1 = base::NetToHost32(data_1);
data_2 = base::NetToHost16(data_2);
data_3 = base::NetToHost16(data_3);
}
bool UUID::InitializeFromString(const base::StringPiece& string) {
if (string.length() != 36)
return false;
UUID temp;
const char kScanFormat[] =
"%08" SCNx32 "-%04" SCNx16 "-%04" SCNx16
"-%02" SCNx8 "%02" SCNx8
"-%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8;
int rv = sscanf(string.data(),
kScanFormat,
&temp.data_1,
&temp.data_2,
&temp.data_3,
&temp.data_4[0],
&temp.data_4[1],
&temp.data_5[0],
&temp.data_5[1],
&temp.data_5[2],
&temp.data_5[3],
&temp.data_5[4],
&temp.data_5[5]);
if (rv != 11)
return false;
*this = temp;
return true;
}
std::string UUID::ToString() const {
return base::StringPrintf("%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
data_1,
data_2,
data_3,
data_4[0],
data_4[1],
data_5[0],
data_5[1],
data_5[2],
data_5[3],
data_5[4],
data_5[5]);
}
#if defined(OS_WIN)
base::string16 UUID::ToString16() const {
return base::UTF8ToUTF16(ToString());
}
#endif // OS_WIN
} // namespace crashpad