1 //===-- StringExtractorGDBRemote.cpp ----------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // C Includes 11 #include <string.h> 12 13 // C++ Includes 14 // Other libraries and framework includes 15 // Project includes 16 #include "Utility/StringExtractorGDBRemote.h" 17 18 19 20 StringExtractorGDBRemote::ResponseType 21 StringExtractorGDBRemote::GetResponseType () const 22 { 23 if (m_packet.empty()) 24 return eUnsupported; 25 26 switch (m_packet[0]) 27 { 28 case 'E': 29 if (m_packet.size() == 3 && 30 isxdigit(m_packet[1]) && 31 isxdigit(m_packet[2])) 32 return eError; 33 break; 34 35 case 'O': 36 if (m_packet.size() == 2 && m_packet[1] == 'K') 37 return eOK; 38 break; 39 40 case '+': 41 if (m_packet.size() == 1) 42 return eAck; 43 break; 44 45 case '-': 46 if (m_packet.size() == 1) 47 return eNack; 48 break; 49 } 50 return eResponse; 51 } 52 53 StringExtractorGDBRemote::ServerPacketType 54 StringExtractorGDBRemote::GetServerPacketType () const 55 { 56 #define PACKET_MATCHES(s) ((packet_size == (sizeof(s)-1)) && (strcmp((packet_cstr),(s)) == 0)) 57 #define PACKET_STARTS_WITH(s) ((packet_size >= (sizeof(s)-1)) && ::strncmp(packet_cstr, s, (sizeof(s)-1))==0) 58 59 // Empty is not a supported packet... 60 if (m_packet.empty()) 61 return eServerPacketType_invalid; 62 63 const size_t packet_size = m_packet.size(); 64 const char *packet_cstr = m_packet.c_str(); 65 switch (m_packet[0]) 66 { 67 case '\x03': 68 if (packet_size == 1) return eServerPacketType_interrupt; 69 break; 70 71 case '-': 72 if (packet_size == 1) return eServerPacketType_nack; 73 break; 74 75 case '+': 76 if (packet_size == 1) return eServerPacketType_ack; 77 break; 78 79 case 'A': 80 return eServerPacketType_A; 81 82 case 'Q': 83 switch (packet_cstr[1]) 84 { 85 case 'E': 86 if (PACKET_STARTS_WITH ("QEnvironment:")) return eServerPacketType_QEnvironment; 87 break; 88 89 case 'S': 90 if (PACKET_MATCHES ("QStartNoAckMode")) return eServerPacketType_QStartNoAckMode; 91 else if (PACKET_STARTS_WITH ("QSetDisableASLR:")) return eServerPacketType_QSetDisableASLR; 92 else if (PACKET_STARTS_WITH ("QSetSTDIN:")) return eServerPacketType_QSetSTDIN; 93 else if (PACKET_STARTS_WITH ("QSetSTDOUT:")) return eServerPacketType_QSetSTDOUT; 94 else if (PACKET_STARTS_WITH ("QSetSTDERR:")) return eServerPacketType_QSetSTDERR; 95 else if (PACKET_STARTS_WITH ("QSetWorkingDir:")) return eServerPacketType_QSetWorkingDir; 96 break; 97 case 'L': 98 if (PACKET_STARTS_WITH ("QLaunchArch:")) return eServerPacketType_QLaunchArch; 99 break; 100 } 101 break; 102 103 case 'q': 104 switch (packet_cstr[1]) 105 { 106 case 's': 107 if (PACKET_MATCHES ("qsProcessInfo")) return eServerPacketType_qsProcessInfo; 108 break; 109 110 case 'f': 111 if (PACKET_STARTS_WITH ("qfProcessInfo")) return eServerPacketType_qfProcessInfo; 112 break; 113 114 case 'C': 115 if (packet_size == 2) return eServerPacketType_qC; 116 break; 117 118 case 'G': 119 if (PACKET_STARTS_WITH ("qGroupName:")) return eServerPacketType_qGroupName; 120 break; 121 122 case 'H': 123 if (PACKET_MATCHES ("qHostInfo")) return eServerPacketType_qHostInfo; 124 break; 125 126 case 'K': 127 if (PACKET_STARTS_WITH ("qKillSpawnedProcess")) return eServerPacketType_qKillSpawnedProcess; 128 break; 129 130 case 'L': 131 if (PACKET_STARTS_WITH ("qLaunchGDBServer")) return eServerPacketType_qLaunchGDBServer; 132 if (PACKET_MATCHES ("qLaunchSuccess")) return eServerPacketType_qLaunchSuccess; 133 break; 134 135 case 'P': 136 if (PACKET_STARTS_WITH ("qProcessInfoPID:")) return eServerPacketType_qProcessInfoPID; 137 if (PACKET_STARTS_WITH ("qPlatform_RunCommand:")) return eServerPacketType_qPlatform_RunCommand; 138 if (PACKET_STARTS_WITH ("qPlatform_IO_MkDir:")) return eServerPacketType_qPlatform_IO_MkDir; 139 break; 140 141 142 case 'S': 143 if (PACKET_STARTS_WITH ("qSpeedTest:")) return eServerPacketType_qSpeedTest; 144 break; 145 146 case 'U': 147 if (PACKET_STARTS_WITH ("qUserName:")) return eServerPacketType_qUserName; 148 break; 149 } 150 break; 151 case 'v': 152 if (PACKET_STARTS_WITH("vFile:")) 153 { 154 if (PACKET_STARTS_WITH("vFile:open:")) return eServerPacketType_vFile_Open; 155 else if (PACKET_STARTS_WITH("vFile:close:")) return eServerPacketType_vFile_Close; 156 else if (PACKET_STARTS_WITH("vFile:pread")) return eServerPacketType_vFile_pRead; 157 else if (PACKET_STARTS_WITH("vFile:pwrite")) return eServerPacketType_vFile_pWrite; 158 else if (PACKET_STARTS_WITH("vFile:size")) return eServerPacketType_vFile_Size; 159 else if (PACKET_STARTS_WITH("vFile:exists")) return eServerPacketType_vFile_Exists; 160 else if (PACKET_STARTS_WITH("vFile:stat")) return eServerPacketType_vFile_Stat; 161 else if (PACKET_STARTS_WITH("vFile:mode")) return eServerPacketType_vFile_Mode; 162 else if (PACKET_STARTS_WITH("vFile:MD5")) return eServerPacketType_vFile_MD5; 163 164 } 165 break; 166 } 167 return eServerPacketType_unimplemented; 168 } 169 170 bool 171 StringExtractorGDBRemote::IsOKResponse() const 172 { 173 return GetResponseType () == eOK; 174 } 175 176 177 bool 178 StringExtractorGDBRemote::IsUnsupportedResponse() const 179 { 180 return GetResponseType () == eUnsupported; 181 } 182 183 bool 184 StringExtractorGDBRemote::IsNormalResponse() const 185 { 186 return GetResponseType () == eResponse; 187 } 188 189 bool 190 StringExtractorGDBRemote::IsErrorResponse() const 191 { 192 return GetResponseType () == eError && 193 m_packet.size() == 3 && 194 isxdigit(m_packet[1]) && 195 isxdigit(m_packet[2]); 196 } 197 198 uint8_t 199 StringExtractorGDBRemote::GetError () 200 { 201 if (GetResponseType() == eError) 202 { 203 SetFilePos(1); 204 return GetHexU8(255); 205 } 206 return 0; 207 } 208 209 size_t 210 StringExtractorGDBRemote::GetEscapedBinaryData (std::string &str) 211 { 212 str.clear(); 213 char ch; 214 while (GetBytesLeft()) 215 { 216 ch = GetChar(); 217 if (ch == 0x7d) 218 ch = (GetChar() ^ 0x20); 219 str.append(1,ch); 220 } 221 return str.size(); 222 } 223 224