1 // ANNA - Anna is Not Nothingness Anymore //
3 // (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo //
5 // See project site at http://redmine.teslayout.com/projects/anna-suite //
6 // See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
10 #include <anna/diameter/codec/functions.hpp>
11 #include <anna/diameter/codec/Message.hpp>
12 #include <anna/diameter/codec/Avp.hpp>
13 #include <anna/diameter/defines.hpp>
14 #include <anna/diameter/functions.hpp>
15 #include <anna/config/defines.hpp> // general types, decoding helpers (DECODE[2/3/4]BYTES_INDX_VALUETYPE), etc.
17 #include <anna/core/DataBlock.hpp>
18 #include <anna/core/functions.hpp>
19 #include <anna/core/tracing/Logger.hpp>
25 using namespace anna::diameter::codec;
30 // Parent struct helper /////////////////////////////////////////////////////////////////////////////
31 void parent::setMessage(const anna::diameter::CommandId & mid, const char *mname) throw() {
37 MessageName = "Message";
38 MessageName += anna::diameter::functions::commandIdAsPairString(mid);
42 void parent::addAvp(const anna::diameter::AvpId & aid, const char *aname) throw() {
43 AvpsId.push_back(aid);
50 name += anna::diameter::functions::avpIdAsPairString(aid);
52 AvpsName.push_back(name);
55 std::string parent::asString() const throw() { // "<command><avp 1>-><avp 2>->...-><avp N>"
56 std::string result = MessageName;
57 for (std::vector<std::string>::const_iterator it = AvpsName.begin(); it != AvpsName.end(); it++) {
64 /////////////////////////////////////////////////////////////////////////////////////////////////////
70 anna::diameter::CommandId functions::getCommandId(const anna::DataBlock & db) throw(anna::RuntimeException) {
71 if(db.getSize() < Message::HeaderLength)
72 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
74 const char * data = db.getData();
76 U24 code = DECODE3BYTES_INDX_VALUETYPE(data, 5, U24);
77 // U24 code = (((U24)data[5] << 16) & 0xFF0000) +
78 // (((U24)data[6] << 8) & 0x00FF00) +
79 // (((U24)data[7]) & 0x0000FF);
80 return (anna::diameter::CommandId(code, (flags & Message::RBitMask) != 0x00));
84 bool functions::isRequest(const anna::DataBlock & db) throw(anna::RuntimeException) {
85 if(db.getSize() < Message::HeaderLength)
86 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
88 return (((db.getData())[4] & Message::RBitMask) != 0x00);
91 anna::diameter::ApplicationId functions::getApplicationId(const anna::DataBlock & db) throw(anna::RuntimeException) {
92 if(db.getSize() < Message::HeaderLength)
93 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
95 const char * appidPtr = db.getData() + 8;
96 anna::diameter::ApplicationId result = DECODE4BYTES_INDX_VALUETYPE(appidPtr, 0, U32);
97 // anna::diameter::ApplicationId result = (((U32)appidPtr[0] << 24) & 0xFF000000) +
98 // (((U32)appidPtr[1] << 16) & 0x00FF0000) +
99 // (((U32)appidPtr[2] << 8) & 0x0000FF00) +
100 // (((U32)appidPtr[3]) & 0x000000FF);
104 anna::diameter::HopByHop functions::getHopByHop(const anna::DataBlock & db) throw(anna::RuntimeException) {
105 if(db.getSize() < Message::HeaderLength)
106 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
108 const char * hbhPtr = db.getData() + 12;
109 anna::diameter::HopByHop result = DECODE4BYTES_INDX_VALUETYPE(hbhPtr, 0, U32);
110 // anna::diameter::HopByHop result = (((U32)hbhPtr[0] << 24) & 0xFF000000) +
111 // (((U32)hbhPtr[1] << 16) & 0x00FF0000) +
112 // (((U32)hbhPtr[2] << 8) & 0x0000FF00) +
113 // (((U32)hbhPtr[3]) & 0x000000FF);
117 anna::diameter::EndToEnd functions::getEndToEnd(const anna::DataBlock & db) throw(anna::RuntimeException) {
118 if(db.getSize() < Message::HeaderLength)
119 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
121 const char * etePtr = db.getData() + 16;
122 anna::diameter::EndToEnd result = DECODE4BYTES_INDX_VALUETYPE(etePtr, 0, U32);
123 // anna::diameter::EndToEnd result = (((U32)etePtr[0] << 24) & 0xFF000000) +
124 // (((U32)etePtr[1] << 16) & 0x00FF0000) +
125 // (((U32)etePtr[2] << 8) & 0x0000FF00) +
126 // (((U32)etePtr[3]) & 0x000000FF);
130 void functions::decodeCommandHeader(const char *start, char & version, U24 & length, char & flags, diameter::CommandId & id, int & appId, int & hbh, int & ete) throw(anna::RuntimeException) {
132 throw anna::RuntimeException("NULL provided start pointer", ANNA_FILE_LOCATION);
135 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
136 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
137 // | Version | Message Length |
138 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
139 // | command flags | Command-Code |
140 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
141 // | Application-ID |
142 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
143 // | Hop-by-Hop Identifier |
144 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
145 // | End-to-End Identifier |
146 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
148 // +-+-+-+-+-+-+-+-+-+-+-+-+-
149 version = start[0]; // Version
150 //length = (start[1] << 16) + (start[2] << 8) + start[3]; // Message Length
151 length = DECODE3BYTES_INDX_VALUETYPE(start, 1, U24);
152 flags = start[4]; // command flags
153 //id.first = (start[5] << 16) + (start[6] << 8) + start[7]; // Command-Code
154 id.first = DECODE3BYTES_INDX_VALUETYPE(start, 5, U24);
155 id.second = ((flags & Message::RBitMask) != 0x00); // Command-Code is a request
156 //appId = (start[8] << 24) + (start[9] << 16) + (start[10] << 8) + start[11]; // Application-ID
157 appId = DECODE4BYTES_INDX_VALUETYPE(start, 8, U32);
158 //hbh = (start[12] << 24) + (start[13] << 16) + (start[14] << 8) + start[15]; // Hop-by-Hop Identifier
159 hbh = DECODE4BYTES_INDX_VALUETYPE(start, 12, U32);
160 //ete = (start[16] << 24) + (start[17] << 16) + (start[18] << 8) + start[19]; // End-to-End Identifier
161 ete = DECODE4BYTES_INDX_VALUETYPE(start, 16, U32);
164 void functions::decodeAVP(const char *start, diameter::AvpId & id, char & flags, int & length, std::string & data) throw(anna::RuntimeException) {
166 throw anna::RuntimeException("NULL provided start pointer", ANNA_FILE_LOCATION);
169 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
170 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
172 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
173 // | AVP Flags | AVP Length |
174 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
175 // | Vendor-ID (opt) |
176 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
179 //id.first = (start[0] << 24) + (start[1] << 16) + (start[2] << 8) + start[3]; // AVP Code
180 id.first = DECODE4BYTES_INDX_VALUETYPE(start, 0, S32);
181 flags = start[4]; // AVP Flags
182 //length = (start[5] << 16) + (start[6] << 8) + start[7]; // AVP Length
183 length = DECODE3BYTES_INDX_VALUETYPE(start, 5, U24);
184 bool vendorSpecific = ((flags & Avp::VBitMask) != 0x00); // AVP Code is vendor-specific
185 //id.second = (vendorSpecific ? ((start[8] << 24) + (start[9] << 16) + (start[10] << 8) + start[11]) : 0 /* IETF */); // Vendor-ID (opt)
186 id.second = (vendorSpecific ? (DECODE4BYTES_INDX_VALUETYPE(start, 8, S32)) : 0 /* IETF */); // Vendor-ID (opt)
187 int dataLength = (vendorSpecific ? (length - 12) : (length - 8)); // avp data part length
188 const char *dataPointer = (vendorSpecific ? (start + 12) : (start + 8)); // pointer to data part
189 data.assign(dataPointer, dataLength);
191 std::string msg = anna::functions::asString("decodedAVP id (%d,%d), length %d, data length %d, data part 0x%s",
192 id.first, id.second, length, dataLength, anna::functions::asHexString(anna::DataBlock(dataPointer, dataLength)).c_str());
193 anna::Logger::write(anna::Logger::Local3, msg, ANNA_FILE_LOCATION);
197 const char * functions::nextAVP(const anna::DataBlock & avpsDB, const char *start) throw(anna::RuntimeException) {
199 throw anna::RuntimeException("NULL provided start pointer", ANNA_FILE_LOCATION);
203 // std::string msg("DataBlock provided to 'nextAVP'");
204 // msg += avpsDB.asString();
205 // anna::Logger::debug(msg, ANNA_FILE_LOCATION);
207 //int avpLength = (start[5] << 16) + (start[6] << 8) + start[7]; // AVP Length
208 int avpLength = DECODE3BYTES_INDX_VALUETYPE(start, 5, int);
209 result = start + 4 * REQUIRED_WORDS(avpLength);
210 const char * first = avpsDB.getData();
211 int offset = (result - first);
213 if(offset > (avpsDB.getSize() - 1))
214 //throw anna::RuntimeException("Start pointer out of boundaries for DataBlock", ANNA_FILE_LOCATION);
220 const char * functions::findAVP(const anna::DataBlock & avpsDB, const diameter::AvpId & id, int n) throw(anna::RuntimeException) {
221 const char * result = avpsDB.getData(); // first avp
223 // Decoded avp information:
228 decodeAVP(result, _id, _flags, _length, _data);
230 if(_id == id) positives++;
232 while((_id != id) || (positives != n)) { // next search if not found or not ocurrence number reached
233 result = nextAVP(avpsDB, result);
235 if(result == NULL) { // (*)
237 std::string msg = "AVP ";
238 msg += anna::diameter::functions::avpIdAsPairString(id);
239 msg += " not found at DataBlock";
240 anna::Logger::debug(msg, ANNA_FILE_LOCATION);
245 decodeAVP(result, _id, _flags, _length, _data);
247 if(_id == id) positives++;
255 void functions::setHopByHop(anna::DataBlock & db, diameter::HopByHop hbh) throw(anna::RuntimeException) {
256 if(db.getSize() < Message::HeaderLength) {
257 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
260 static char source[4];
261 source[0] = (char)(hbh >> 24);
262 source[1] = (char)(hbh >> 16);
263 source[2] = (char)(hbh >> 8);
264 source[3] = (char)hbh;
265 memcpy((char*)(db.getData() + 12), source, 4);
269 void functions::setEndToEnd(anna::DataBlock & db, diameter::EndToEnd ete) throw(anna::RuntimeException) {
270 if(db.getSize() < Message::HeaderLength) {
271 throw anna::RuntimeException("Not enough bytes to cover command header length", ANNA_FILE_LOCATION);
274 static char source[4];
275 source[0] = (char)(ete >> 24);
276 source[1] = (char)(ete >> 16);
277 source[2] = (char)(ete >> 8);
278 source[3] = (char)ete;
279 memcpy((char *)(db.getData() + 16), source, 4);