]> git.ipfire.org Git - thirdparty/pdns.git/blame - pdns/protobuf.cc
rec: Use a string instead of a fixed 65k buffer for TCP connections
[thirdparty/pdns.git] / pdns / protobuf.cc
CommitLineData
d9d3f9c1 1
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2#include "gettime.hh"
3#include "dnsparser.hh"
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4#include "protobuf.hh"
5#include "dnsparser.hh"
6#include "gettime.hh"
7
4898a348 8void DNSProtoBufMessage::setType(DNSProtoBufMessageType type)
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9{
10#ifdef HAVE_PROTOBUF
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11 switch(type) {
12 case DNSProtoBufMessage::DNSProtoBufMessageType::Query:
13 d_message.set_type(PBDNSMessage_Type_DNSQueryType);
14 break;
15 case DNSProtoBufMessage::DNSProtoBufMessageType::Response:
16 d_message.set_type(PBDNSMessage_Type_DNSResponseType);
17 break;
18 case DNSProtoBufMessage::DNSProtoBufMessageType::OutgoingQuery:
19 d_message.set_type(PBDNSMessage_Type_DNSOutgoingQueryType);
20 break;
21 case DNSProtoBufMessage::DNSProtoBufMessageType::IncomingResponse:
22 d_message.set_type(PBDNSMessage_Type_DNSIncomingResponseType);
23 break;
24 default:
25 throw std::runtime_error("Unsupported protobuf type: "+std::to_string(type));
26 }
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27#endif /* HAVE_PROTOBUF */
28}
29
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30DNSProtoBufMessage::DNSProtoBufMessage(DNSProtoBufMessageType type)
31{
32 setType(type);
33}
34
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35void DNSProtoBufMessage::setQuestion(const DNSName& qname, uint16_t qtype, uint16_t qclass)
36{
37#ifdef HAVE_PROTOBUF
38 PBDNSMessage_DNSQuestion* question = d_message.mutable_question();
39 if (question) {
da5bcd9d 40 if(!qname.empty())
41 question->set_qname(qname.toString());
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42 question->set_qtype(qtype);
43 question->set_qclass(qclass);
44 }
45#endif /* HAVE_PROTOBUF */
46}
47
48void DNSProtoBufMessage::setBytes(size_t bytes)
49{
50#ifdef HAVE_PROTOBUF
51 d_message.set_inbytes(bytes);
52#endif /* HAVE_PROTOBUF */
53}
54
55void DNSProtoBufMessage::setResponseCode(uint8_t rcode)
56{
57#ifdef HAVE_PROTOBUF
58 PBDNSMessage_DNSResponse* response = d_message.mutable_response();
59 if (response) {
60 response->set_rcode(rcode);
61 }
62#endif /* HAVE_PROTOBUF */
63}
64
65void DNSProtoBufMessage::setTime(time_t sec, uint32_t usec)
66{
67#ifdef HAVE_PROTOBUF
68 d_message.set_timesec(sec);
69 d_message.set_timeusec(usec);
70#endif /* HAVE_PROTOBUF */
71}
72
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73void DNSProtoBufMessage::setQueryTime(time_t sec, uint32_t usec)
74{
75#ifdef HAVE_PROTOBUF
76 PBDNSMessage_DNSResponse* response = d_message.mutable_response();
77 if (response) {
78 response->set_querytimesec(sec);
79 response->set_querytimeusec(usec);
80 }
81#endif /* HAVE_PROTOBUF */
82}
83
a94bc5d7 84void DNSProtoBufMessage::setEDNSSubnet(const Netmask& subnet, uint8_t mask)
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85{
86#ifdef HAVE_PROTOBUF
87 if (!subnet.empty()) {
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88 ComboAddress ca(subnet.getNetwork());
89 ca.truncate(mask);
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90 if (ca.sin4.sin_family == AF_INET) {
91 d_message.set_originalrequestorsubnet(&ca.sin4.sin_addr.s_addr, sizeof(ca.sin4.sin_addr.s_addr));
92 }
93 else if (ca.sin4.sin_family == AF_INET6) {
94 d_message.set_originalrequestorsubnet(&ca.sin6.sin6_addr.s6_addr, sizeof(ca.sin6.sin6_addr.s6_addr));
95 }
96 }
97#endif /* HAVE_PROTOBUF */
98}
99
e6956c91 100void DNSProtoBufMessage::addTag(const std::string& strValue)
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101{
102#ifdef HAVE_PROTOBUF
103
104 PBDNSMessage_DNSResponse* response = d_message.mutable_response();
105 if (!response)
106 return;
107
e6956c91 108 response->add_tags(strValue);
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109
110#endif /* HAVE_PROTOBUF */
111}
112
ff09c374 113void DNSProtoBufMessage::addRR(const DNSName& qname, uint16_t uType, uint16_t uClass, uint32_t uTTL, const std::string& strBlob)
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114{
115#ifdef HAVE_PROTOBUF
116
117 PBDNSMessage_DNSResponse* response = d_message.mutable_response();
118 if (!response)
119 return;
26a6373d 120 PBDNSMessage_DNSResponse_DNSRR* rr = response->add_rrs();
29cd61cc 121 if (rr) {
ff09c374 122 rr->set_name(qname.toString());
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123 rr->set_type(uType);
124 rr->set_class_(uClass);
125 rr->set_ttl(uTTL);
c959e01a 126 rr->set_rdata(strBlob.c_str(), strBlob.size());
29cd61cc 127 }
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128
129#endif /* HAVE_PROTOBUF */
130}
26a6373d 131
165c9030 132void DNSProtoBufMessage::addRRsFromPacket(const char* packet, const size_t len, bool includeCNAME)
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133{
134#ifdef HAVE_PROTOBUF
135 if (len < sizeof(struct dnsheader))
136 return;
137
138 const struct dnsheader* dh = (const struct dnsheader*) packet;
139
140 if (ntohs(dh->ancount) == 0)
141 return;
142
143 if (ntohs(dh->qdcount) == 0)
144 return;
145
146 PBDNSMessage_DNSResponse* response = d_message.mutable_response();
147 if (!response)
148 return;
149
150 vector<uint8_t> content(len - sizeof(dnsheader));
151 copy(packet + sizeof(dnsheader), packet + len, content.begin());
152 PacketReader pr(content);
153
154 size_t idx = 0;
155 DNSName rrname;
156 uint16_t qdcount = ntohs(dh->qdcount);
157 uint16_t ancount = ntohs(dh->ancount);
158 uint16_t rrtype;
159 uint16_t rrclass;
160 string blob;
161 struct dnsrecordheader ah;
162
163 rrname = pr.getName();
164 rrtype = pr.get16BitInt();
165 rrclass = pr.get16BitInt();
166
167 /* consume remaining qd if any */
168 if (qdcount > 1) {
169 for(idx = 1; idx < qdcount; idx++) {
170 rrname = pr.getName();
171 rrtype = pr.get16BitInt();
172 rrclass = pr.get16BitInt();
173 (void) rrtype;
174 (void) rrclass;
175 }
176 }
177
178 /* parse AN */
179 for (idx = 0; idx < ancount; idx++) {
180 rrname = pr.getName();
181 pr.getDnsrecordheader(ah);
182
d9d3f9c1 183 if (ah.d_type == QType::A || ah.d_type == QType::AAAA) {
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184 pr.xfrBlob(blob);
185
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186 PBDNSMessage_DNSResponse_DNSRR* rr = response->add_rrs();
187 if (rr) {
188 rr->set_name(rrname.toString());
189 rr->set_type(ah.d_type);
190 rr->set_class_(ah.d_class);
191 rr->set_ttl(ah.d_ttl);
192 rr->set_rdata(blob.c_str(), blob.length());
193 }
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194 } else if (ah.d_type == QType::CNAME && includeCNAME) {
195 PBDNSMessage_DNSResponse_DNSRR* rr = response->add_rrs();
196 if (rr) {
197 rr->set_name(rrname.toString());
198 rr->set_type(ah.d_type);
199 rr->set_class_(ah.d_class);
200 rr->set_ttl(ah.d_ttl);
201 DNSName target;
202 pr.xfrName(target, true);
203 rr->set_rdata(target.toString());
204 }
205 }
206 else {
207 pr.xfrBlob(blob);
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208 }
209 }
210#endif /* HAVE_PROTOBUF */
211}
212
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213void DNSProtoBufMessage::setRequestor(const std::string& requestor)
214{
215#ifdef HAVE_PROTOBUF
216 d_message.set_from(requestor);
217#endif /* HAVE_PROTOBUF */
218}
219
220void DNSProtoBufMessage::setRequestor(const ComboAddress& requestor)
221{
222#ifdef HAVE_PROTOBUF
223 if (requestor.sin4.sin_family == AF_INET) {
224 d_message.set_from(&requestor.sin4.sin_addr.s_addr, sizeof(requestor.sin4.sin_addr.s_addr));
225 }
226 else if (requestor.sin4.sin_family == AF_INET6) {
227 d_message.set_from(&requestor.sin6.sin6_addr.s6_addr, sizeof(requestor.sin6.sin6_addr.s6_addr));
228 }
229#endif /* HAVE_PROTOBUF */
230}
231
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232void DNSProtoBufMessage::setRequestorId(const std::string& requestorId)
233{
234#ifdef HAVE_PROTOBUF
235 d_message.set_requestorid(requestorId);
236#endif /* HAVE_PROTOBUF */
237}
238
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239void DNSProtoBufMessage::setDeviceId(const std::string& deviceId)
240{
241#ifdef HAVE_PROTOBUF
242 d_message.set_deviceid(deviceId);
243#endif /* HAVE_PROTOBUF */
244}
245
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246void DNSProtoBufMessage::setResponder(const std::string& responder)
247{
248#ifdef HAVE_PROTOBUF
b3261c20 249 d_message.set_to(responder);
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250#endif /* HAVE_PROTOBUF */
251}
252
253void DNSProtoBufMessage::setResponder(const ComboAddress& responder)
254{
255#ifdef HAVE_PROTOBUF
256 if (responder.sin4.sin_family == AF_INET) {
b3261c20 257 d_message.set_to(&responder.sin4.sin_addr.s_addr, sizeof(responder.sin4.sin_addr.s_addr));
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258 }
259 else if (responder.sin4.sin_family == AF_INET6) {
b3261c20 260 d_message.set_to(&responder.sin6.sin6_addr.s6_addr, sizeof(responder.sin6.sin6_addr.s6_addr));
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261 }
262#endif /* HAVE_PROTOBUF */
263}
264
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265void DNSProtoBufMessage::serialize(std::string& data) const
266{
267#ifdef HAVE_PROTOBUF
268 d_message.SerializeToString(&data);
269#endif /* HAVE_PROTOBUF */
270}
271
272std::string DNSProtoBufMessage::toDebugString() const
273{
274#ifdef HAVE_PROTOBUF
275 return d_message.DebugString();
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276#else
277 return std::string();
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278#endif /* HAVE_PROTOBUF */
279}
280
281#ifdef HAVE_PROTOBUF
282
283void DNSProtoBufMessage::setUUID(const boost::uuids::uuid& uuid)
284{
285 std::string* messageId = d_message.mutable_messageid();
286 messageId->resize(uuid.size());
287 std::copy(uuid.begin(), uuid.end(), messageId->begin());
288}
289
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290void DNSProtoBufMessage::setInitialRequestID(const boost::uuids::uuid& uuid)
291{
292 std::string* messageId = d_message.mutable_initialrequestid();
293 messageId->resize(uuid.size());
294 std::copy(uuid.begin(), uuid.end(), messageId->begin());
295}
296
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297void DNSProtoBufMessage::update(const boost::uuids::uuid& uuid, const ComboAddress* requestor, const ComboAddress* responder, bool isTCP, uint16_t id)
298{
299 struct timespec ts;
300 gettime(&ts, true);
301 setTime(ts.tv_sec, ts.tv_nsec / 1000);
302
303 setUUID(uuid);
304 d_message.set_id(ntohs(id));
305
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306 if (requestor) {
307 d_message.set_socketfamily(requestor->sin4.sin_family == AF_INET ? PBDNSMessage_SocketFamily_INET : PBDNSMessage_SocketFamily_INET6);
308 }
309 else if (responder) {
310 d_message.set_socketfamily(responder->sin4.sin_family == AF_INET ? PBDNSMessage_SocketFamily_INET : PBDNSMessage_SocketFamily_INET6);
311 }
312
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313 d_message.set_socketprotocol(isTCP ? PBDNSMessage_SocketProtocol_TCP : PBDNSMessage_SocketProtocol_UDP);
314
315 if (responder) {
a94673ea 316 setResponder(*responder);
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317 }
318 if (requestor) {
a94673ea 319 setRequestor(*requestor);
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320 }
321}
322
323
4898a348 324DNSProtoBufMessage::DNSProtoBufMessage(DNSProtoBufMessageType type, const boost::uuids::uuid& uuid, const ComboAddress* requestor, const ComboAddress* responder, const DNSName& domain, int qtype, uint16_t qclass, uint16_t qid, bool isTCP, size_t bytes)
d9d3f9c1 325{
4898a348 326 update(uuid, requestor, responder, isTCP, qid);
d9d3f9c1 327
4898a348 328 setType(type);
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329
330 setBytes(bytes);
331 setQuestion(domain, qtype, qclass);
332}
333
334#endif /* HAVE_PROTOBUF */