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.
29
30 #include <arpa/inet.h>
31 #include <limits.h>
32
33 #include <string>
34 #include <vector>
35
36 #include "common/using_std_string.h"
37 #include "processor/binarystream.h"
38
39 namespace google_breakpad {
40 using std::vector;
41
operator >>(string & str)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 }
57
operator >>(uint8_t & u8)58 binarystream &binarystream::operator>>(uint8_t &u8) {
59 stream_.read((char *)&u8, 1);
60 return *this;
61 }
62
operator >>(uint16_t & u16)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 }
70
operator >>(uint32_t & u32)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 }
78
operator >>(uint64_t & u64)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 }
86
operator <<(const string & str)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 }
98
operator <<(uint8_t u8)99 binarystream &binarystream::operator<<(uint8_t u8) {
100 stream_.write((const char*)&u8, 1);
101 return *this;
102 }
103
operator <<(uint16_t u16)104 binarystream &binarystream::operator<<(uint16_t u16) {
105 u16 = htons(u16);
106 stream_.write((const char*)&u16, 2);
107 return *this;
108 }
109
operator <<(uint32_t u32)110 binarystream &binarystream::operator<<(uint32_t u32) {
111 u32 = htonl(u32);
112 stream_.write((const char*)&u32, 4);
113 return *this;
114 }
115
operator <<(uint64_t u64)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 }
123
124 } // namespace google_breakpad
125