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 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 58 binarystream &binarystream::operator>>(uint8_t &u8) { 59 stream_.read((char *)&u8, 1); 60 return *this; 61 } 62 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 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 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 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 99 binarystream &binarystream::operator<<(uint8_t u8) { 100 stream_.write((const char*)&u8, 1); 101 return *this; 102 } 103 104 binarystream &binarystream::operator<<(uint16_t u16) { 105 u16 = htons(u16); 106 stream_.write((const char*)&u16, 2); 107 return *this; 108 } 109 110 binarystream &binarystream::operator<<(uint32_t u32) { 111 u32 = htonl(u32); 112 stream_.write((const char*)&u32, 4); 113 return *this; 114 } 115 116 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
