The Tor Browser: toolkit/crashreporter/google-breakpad/src/processor/binarystream.cc@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 // Copyright (c) 2010, 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.

    30 #include <arpa/inet.h>

    31 #include <limits.h>

    33 #include <string>

    34 #include <vector>

    36 #include "common/using_std_string.h"

    37 #include "processor/binarystream.h"

    39 namespace google_breakpad {

    40 using std::vector;

    42 binarystream &binarystream::operator>>(string &str) {

    43   uint16_t length;

    44   *this >> length;

    45   if (eof())

    46     return *this;

    47   if (length == 0) {

    48     str.clear();

    49     return *this;

    50   }

    51   vector<char> buffer(length);

    52   stream_.read(&buffer[0], length);

    53   if (!eof())

    54     str.assign(&buffer[0], length);

    55   return *this;

    56 }

    58 binarystream &binarystream::operator>>(uint8_t &u8) {

    59   stream_.read((char *)&u8, 1);

    60   return *this;

    61 }

    63 binarystream &binarystream::operator>>(uint16_t &u16) {

    64   uint16_t temp;

    65   stream_.read((char *)&temp, 2);

    66   if (!eof())

    67     u16 = ntohs(temp);

    68   return *this;

    69 }

    71 binarystream &binarystream::operator>>(uint32_t &u32) {

    72   uint32_t temp;

    73   stream_.read((char *)&temp, 4);

    74   if (!eof())

    75     u32 = ntohl(temp);

    76   return *this;

    77 }

    79 binarystream &binarystream::operator>>(uint64_t &u64) {

    80   uint32_t lower, upper;

    81   *this >> lower >> upper;

    82   if (!eof())

    83     u64 = static_cast<uint64_t>(lower) | (static_cast<uint64_t>(upper) << 32);

    84   return *this;

    85 }

    87 binarystream &binarystream::operator<<(const string &str) {

    88   if (str.length() > USHRT_MAX) {

    89     // truncate to 16-bit length

    90     *this << static_cast<uint16_t>(USHRT_MAX);

    91     stream_.write(str.c_str(), USHRT_MAX);

    92   } else {

    93     *this << (uint16_t)(str.length() & 0xFFFF);

    94     stream_.write(str.c_str(), str.length());

    95   }

    96   return *this;

    97 }

    99 binarystream &binarystream::operator<<(uint8_t u8) {

   100   stream_.write((const char*)&u8, 1);

   101   return *this;

   102 }

   104 binarystream &binarystream::operator<<(uint16_t u16) {

   105   u16 = htons(u16);

   106   stream_.write((const char*)&u16, 2);

   107   return *this;

   108 }

   110 binarystream &binarystream::operator<<(uint32_t u32) {

   111   u32 = htonl(u32);

   112   stream_.write((const char*)&u32, 4);

   113   return *this;

   114 }

   116 binarystream &binarystream::operator<<(uint64_t u64) {

   117   // write 64-bit ints as two 32-bit ints, so we can byte-swap them easily

   118   uint32_t lower = static_cast<uint32_t>(u64 & 0xFFFFFFFF);

   119   uint32_t upper = static_cast<uint32_t>(u64 >> 32);

   120   *this << lower << upper;

   121   return *this;

   122 }

   124 }  // namespace google_breakpad

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