2 #include <sys/socket.h>
13 #include "asn1/OpenPDU.h"
14 #include "asn1/ClosePDU.h"
15 #include "asn1/RReqPDU.h"
16 #include "asn1/GetRequest-PDU.h"
17 #include "asn1/GetResponse-PDU.h"
18 #include "asn1/VarBindList.h"
19 #include "asn1/VarBind.h"
20 #include "asn1/OBJECT_IDENTIFIER.h"
21 #include "asn1/ber_decoder.h"
22 #include "asn1/der_encoder.h"
25 #include "stg/common.h"
27 bool WaitPackets(int sd);
29 std::string OI2String(OBJECT_IDENTIFIER_t * oi)
34 int count = OBJECT_IDENTIFIER_get_arcs(oi, arcs, sizeof(arcs[0]), 1024);
39 for (int i = 0; i < count; ++i)
43 strprintf(&arc, "%d", arcs[i]);
50 bool String2OI(const std::string & str, OBJECT_IDENTIFIER_t * oi)
52 size_t left = 0, pos = 0, arcPos = 0;
54 pos = str.find_first_of('.', left);
58 pos = str.find_first_of('.', left);
60 while (pos != std::string::npos)
63 if (str2x(str.substr(left, left - pos), arc))
69 pos = str.find_first_of('.', left);
71 if (left < str.length())
74 if (str2x(str.substr(left, left - pos), arc))
80 printfd(__FILE__, "String2OI() - arcPos: %d\n", arcPos);
81 OBJECT_IDENTIFIER_set_arcs(oi, arcs, sizeof(arcs[0]), arcPos);
85 class SNMP_AGENT_CREATOR
88 SNMP_AGENT * snmpAgent;
92 : snmpAgent(new SNMP_AGENT())
97 printfd(__FILE__, "SNMP_AGENT_CREATOR::~SNMP_AGENT_CREATOR()\n");
101 SNMP_AGENT * GetPlugin()
107 SNMP_AGENT_CREATOR sac;
111 return sac.GetPlugin();
114 int SendOpenPDU(int fd)
116 const char * description = "Stg SNMP Agent";
117 //int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1, 5, 2, 1, 1};
118 asn_enc_rval_t error;
121 memset(&msg, 0, sizeof(msg));
123 msg.present = OpenPDU_PR_simple;
124 asn_long2INTEGER(&msg.choice.simple.version, SimpleOpen__version_version_1);
125 /*OBJECT_IDENTIFIER_set_arcs(&msg.choice.simple.identity,
129 if (!String2OI(".1.3.6.1.4.1.9363", &msg.choice.simple.identity))
131 printfd(__FILE__, "SendOpenPDU() - failed to convert string to OBJECT_IDENTIFIER\n");
134 OCTET_STRING_fromString(&msg.choice.simple.description,
136 OCTET_STRING_fromString(&msg.choice.simple.password,
140 error = der_encode_to_buffer(&asn_DEF_OpenPDU, &msg, buffer, sizeof(buffer));
142 if (error.encoded == -1)
144 printfd(__FILE__, "Could not encode OpenPDU (at %s)\n",
145 error.failed_type ? error.failed_type->name : "unknown");
150 write(fd, buffer, error.encoded);
151 printfd(__FILE__, "OpenPDU encoded successfully to %d bytes\n", error.encoded);
156 int SendClosePDU(int fd)
160 memset(&msg, 0, sizeof(msg));
162 asn_long2INTEGER(&msg, ClosePDU_goingDown);
165 asn_enc_rval_t error;
166 error = der_encode_to_buffer(&asn_DEF_ClosePDU, &msg, buffer, sizeof(buffer));
168 if (error.encoded == -1)
170 printfd(__FILE__, "Could not encode ClosePDU (at %s)\n",
171 error.failed_type ? error.failed_type->name : "unknown");
176 write(fd, buffer, error.encoded);
177 printfd(__FILE__, "ClosePDU encoded successfully\n");
182 int SendRReqPDU(int fd)
184 int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1};
185 asn_enc_rval_t error;
188 memset(&msg, 0, sizeof(msg));
191 asn_long2INTEGER(&msg.operation, RReqPDU__operation_readOnly);
192 OBJECT_IDENTIFIER_set_arcs(&msg.subtree,
198 error = der_encode_to_buffer(&asn_DEF_RReqPDU, &msg, buffer, sizeof(buffer));
200 if (error.encoded == -1)
202 printfd(__FILE__, "Could not encode RReqPDU (at %s)\n",
203 error.failed_type ? error.failed_type->name : "unknown");
208 write(fd, buffer, error.encoded);
209 printfd(__FILE__, "RReqPDU encoded successfully to %d bytes\n", error.encoded);
214 int SendSetResponsePDU(int fd, const PDU_t * pdu)
216 //int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1};
217 asn_enc_rval_t error;
218 GetResponse_PDU_t msg;
220 memset(&msg, 0, sizeof(msg));
222 msg.request_id = pdu->request_id;
223 asn_long2INTEGER(&msg.error_status, PDU__error_status_readOnly);
224 asn_long2INTEGER(&msg.error_index, PDU__error_status_readOnly);
227 error = der_encode_to_buffer(&asn_DEF_GetResponse_PDU, &msg, buffer, sizeof(buffer));
229 if (error.encoded == -1)
231 printfd(__FILE__, "Could not encode GetResponsePDU (at %s)\n",
232 error.failed_type ? error.failed_type->name : "unknown");
237 write(fd, buffer, error.encoded);
238 printfd(__FILE__, "GetResponsePDU encoded successfully to %d bytes\n", error.encoded);
243 SMUX_PDUs_t * RecvSMUXPDUs(int fd)
246 SMUX_PDUs_t * pdus = NULL;
248 memset(buffer, 0, sizeof(buffer));
250 size_t length = read(fd, buffer, sizeof(buffer));
253 asn_dec_rval_t error;
254 error = ber_decode(0, &asn_DEF_SMUX_PDUs, (void **)&pdus, buffer, length);
255 if(error.code != RC_OK)
257 printfd(__FILE__, "Failed to decode PDUs at byte %ld\n",
258 (long)error.consumed);
264 int ParseIntInRange(const std::string & str,
269 if (str2x(str.c_str(), *val))
273 if (*val < min || *val > max)
280 SNMP_AGENT_SETTINGS::SNMP_AGENT_SETTINGS()
285 int SNMP_AGENT_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
288 std::vector<PARAM_VALUE>::const_iterator pvi;
290 ///////////////////////////
292 pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
293 if (pvi == s.moduleParams.end())
295 errorStr = "Parameter \'Port\' not found.";
296 printfd(__FILE__, "Parameter 'Port' not found\n");
299 if (ParseIntInRange(pvi->value[0], 2, 65535, &p))
301 errorStr = "Cannot parse parameter \'Port\': " + errorStr;
302 printfd(__FILE__, "Cannot parse parameter 'Port'\n");
307 pv.param = "Password";
308 pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
309 if (pvi == s.moduleParams.end())
311 errorStr = "Parameter \'Password\' not found.";
312 printfd(__FILE__, "Parameter 'Password' not found\n");
317 password = pvi->value[0];
321 pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
322 if (pvi == s.moduleParams.end())
324 errorStr = "Parameter \'Server\' not found.";
325 printfd(__FILE__, "Parameter 'Server' not found\n");
328 ip = inet_strington(pvi->value[0]);
333 SNMP_AGENT::SNMP_AGENT()
339 pthread_mutex_init(&mutex, NULL);
341 smuxHandlers[SMUX_PDUs_PR_close] = &SNMP_AGENT::CloseHandler;
342 smuxHandlers[SMUX_PDUs_PR_registerResponse] = &SNMP_AGENT::RegisterResponseHandler;
343 smuxHandlers[SMUX_PDUs_PR_pdus] = &SNMP_AGENT::PDUsHandler;
344 smuxHandlers[SMUX_PDUs_PR_commitOrRollback] = &SNMP_AGENT::CommitOrRollbackHandler;
346 pdusHandlers[PDUs_PR_get_request] = &SNMP_AGENT::GetRequestHandler;
347 pdusHandlers[PDUs_PR_get_next_request] = &SNMP_AGENT::GetNextRequestHandler;
348 pdusHandlers[PDUs_PR_set_request] = &SNMP_AGENT::SetRequestHandler;
351 SNMP_AGENT::~SNMP_AGENT()
353 printfd(__FILE__, "SNMP_AGENT::~SNMP_AGENT()\n");
354 pthread_mutex_destroy(&mutex);
357 int SNMP_AGENT::ParseSettings()
359 return snmpAgentSettings.ParseSettings(settings);
362 int SNMP_AGENT::Start()
369 if (pthread_create(&thread, NULL, Runner, this))
371 errorStr = "Cannot create thread.";
372 printfd(__FILE__, "Cannot create thread\n");
380 int SNMP_AGENT::Stop()
382 printfd(__FILE__, "SNMP_AGENT::Stop() - Before\n");
387 //5 seconds to thread stops itself
388 for (int i = 0; i < 25 && !stopped; i++)
390 struct timespec ts = {0, 200000000};
391 nanosleep(&ts, NULL);
394 //after 5 seconds waiting thread still running. now killing it
397 printfd(__FILE__, "SNMP_AGENT::Stop() - failed to stop thread, killing it\n");
398 if (pthread_kill(thread, SIGINT))
400 errorStr = "Cannot kill thread.";
401 printfd(__FILE__, "SNMP_AGENT::Stop() - Cannot kill thread\n");
404 printfd(__FILE__, "SNMP_AGENT::Stop() - killed Run\n");
408 pthread_join(thread, NULL);
412 printfd(__FILE__, "SNMP_AGENT::Stop() - After\n");
416 void * SNMP_AGENT::Runner(void * d)
418 SNMP_AGENT * snmpAgent = static_cast<SNMP_AGENT *>(d);
425 void SNMP_AGENT::Run()
431 printfd(__FILE__, "SNMP_AGENT::Run() - Before\n");
434 if (WaitPackets(sock))
436 SMUX_PDUs_t * pdus = RecvSMUXPDUs(sock);
443 printfd(__FILE__, "SNMP_AGENT::Run() - After\n");
448 bool SNMP_AGENT::PrepareNet()
450 sock = socket(AF_INET, SOCK_STREAM, 0);
454 errorStr = "Cannot create socket.";
455 printfd(__FILE__, "Cannot create socket\n");
459 struct sockaddr_in addr;
461 addr.sin_family = AF_INET;
462 addr.sin_port = htons(snmpAgentSettings.GetPort());
463 addr.sin_addr.s_addr = snmpAgentSettings.GetIP();
465 if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
467 errorStr = "Cannot connect.";
468 printfd(__FILE__, "Cannot connect. Message: '%s'\n", strerror(errno));
475 bool WaitPackets(int sd)
485 int res = select(sd + 1, &rfds, NULL, NULL, &tv);
486 if (res == -1) // Error
490 printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
495 if (res == 0) // Timeout
503 bool SNMP_AGENT::DispatchPDUs(const SMUX_PDUs_t * pdus)
505 SMUXHandlers::iterator it;
506 it = smuxHandlers.find(pdus->present);
507 if (it != smuxHandlers.end())
509 return (this->*(it->second))(pdus);
513 switch (pdus->present)
515 case SMUX_PDUs_PR_NOTHING:
516 printfd(__FILE__, "PDUs: nothing\n");
518 case SMUX_PDUs_PR_open:
519 printfd(__FILE__, "PDUs: open\n");
521 case SMUX_PDUs_PR_registerRequest:
522 printfd(__FILE__, "PDUs: registerRequest\n");
525 printfd(__FILE__, "PDUs: undefined\n");
527 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
532 bool SNMP_AGENT::CloseHandler(const SMUX_PDUs_t * pdus)
534 printfd(__FILE__, "SNMP_AGENT::CloseHandler()\n");
535 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
539 bool SNMP_AGENT::RegisterResponseHandler(const SMUX_PDUs_t * pdus)
541 printfd(__FILE__, "SNMP_AGENT::RegisterResponseHandler()\n");
542 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
546 bool SNMP_AGENT::PDUsHandler(const SMUX_PDUs_t * pdus)
548 printfd(__FILE__, "SNMP_AGENT::PDUsHandler()\n");
549 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
550 PDUsHandlers::iterator it;
551 it = pdusHandlers.find(pdus->choice.pdus.present);
552 if (it != pdusHandlers.end())
554 return (this->*(it->second))(&pdus->choice.pdus);
558 switch (pdus->present)
560 case PDUs_PR_NOTHING:
561 printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - nothing\n");
563 case PDUs_PR_get_response:
564 printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - get response\n");
567 printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - trap\n");
570 printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - undefined\n");
576 bool SNMP_AGENT::CommitOrRollbackHandler(const SMUX_PDUs_t * pdus)
578 printfd(__FILE__, "SNMP_AGENT::CommitOrRollbackHandler()\n");
579 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
583 bool SNMP_AGENT::GetRequestHandler(const PDUs_t * pdus)
585 printfd(__FILE__, "SNMP_AGENT::GetRequestHandler()\n");
586 asn_fprint(stderr, &asn_DEF_PDUs, pdus);
587 const VarBindList_t * vbl = &pdus->choice.get_request.variable_bindings;
588 for (int i = 0; i < vbl->list.count; ++i)
590 VarBind_t * vb = pdus->choice.get_request.variable_bindings.list.array[i];
591 printfd(__FILE__, "OID: %s\n", OI2String(&vb->name).c_str());
596 bool SNMP_AGENT::GetNextRequestHandler(const PDUs_t * pdus)
598 printfd(__FILE__, "SNMP_AGENT::GetNextRequestHandler()\n");
599 asn_fprint(stderr, &asn_DEF_PDUs, pdus);
603 bool SNMP_AGENT::SetRequestHandler(const PDUs_t * pdus)
605 printfd(__FILE__, "SNMP_AGENT::SetRequestHandler()\n");
606 asn_fprint(stderr, &asn_DEF_PDUs, pdus);
607 SendSetResponsePDU(sock, &pdus->choice.set_request);