+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+#include <cstring>
+#include <cerrno>
+#include <ctime>
+#include <csignal>
+
+#include <vector>
+#include <algorithm>
+
#include "asn1/OpenPDU.h"
+#include "asn1/ClosePDU.h"
+#include "asn1/SMUX-PDUs.h"
+#include "asn1/OBJECT_IDENTIFIER.h"
+#include "asn1/ber_decoder.h"
+#include "asn1/der_encoder.h"
#include "snmp.h"
#include "stg/common.h"
};
};
-SNMP_AGENT_CREATOR pc;
+SNMP_AGENT_CREATOR sac;
+
+PLUGIN * GetPlugin()
+{
+return sac.GetPlugin();
+}
int output(const void * buffer, size_t size, void * data)
{
return write(*fd, buffer, size);
}
-int SendOpenPDU(int fd, OpenPDU & msg)
+int SendOpenPDU(int fd)
{
+const char * description = "Stg SNMP Agent";
+int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1, 5, 2, 1, 1};
asn_enc_rval_t error;
+OpenPDU msg;
+
+msg.present = OpenPDU_PR_simple;
+asn_long2INTEGER(&msg.choice.simple.version, 1);
+OBJECT_IDENTIFIER_set_arcs(&msg.choice.simple.identity,
+ oid,
+ sizeof(oid[0]),
+ sizeof(oid));
+OCTET_STRING_fromBuf(&msg.choice.simple.description,
+ description,
+ sizeof(description));
+OCTET_STRING_fromBuf(&msg.choice.simple.password,
+ "",
+ 0);
error = der_encode(&asn_DEF_OpenPDU, &msg, output, &fd);
return 0;
}
+int SendClosePDU(int fd)
+{
+ClosePDU msg = ClosePDU_goingDown;
+
+asn_enc_rval_t error;
+error = der_encode(&asn_DEF_ClosePDU, &msg, output, &fd);
+
+if (error.encoded == -1)
+ {
+ printfd(__FILE__, "Could not encode ClosePDU (at %s)\n",
+ error.failed_type ? error.failed_type->name : "unknown");
+ return -1;
+ }
+else
+ {
+ printfd(__FILE__, "ClosePDU encoded successfully");
+ }
+return 0;
+}
+
+int RecvSMUXPDUs(int fd)
+{
+char buffer[8192];
+SMUX_PDUs * pdus;
+
+size_t length = read(fd, buffer, sizeof(buffer));
+asn_dec_rval_t error;
+error = ber_decode(0, &asn_DEF_SMUX_PDUs, (void **)&pdus, buffer, length);
+if(error.code != RC_OK)
+ {
+ printfd(__FILE__, "Failed to decode PDUs at byte %ld\n",
+ (long)error.consumed);
+ return -1;
+ }
+switch (pdus->present)
+ {
+ case SMUX_PDUs_PR_NOTHING:
+ printfd(__FILE__, "PDUs: nothing\n");
+ break;
+ case SMUX_PDUs_PR_open:
+ printfd(__FILE__, "PDUs: open\n");
+ break;
+ case SMUX_PDUs_PR_close:
+ printfd(__FILE__, "PDUs: close\n");
+ break;
+ case SMUX_PDUs_PR_registerRequest:
+ printfd(__FILE__, "PDUs: registerRequest\n");
+ break;
+ case SMUX_PDUs_PR_registerResponse:
+ printfd(__FILE__, "PDUs: registerResponse\n");
+ break;
+ case SMUX_PDUs_PR_pdus:
+ printfd(__FILE__, "PDUs: pdus\n");
+ break;
+ case SMUX_PDUs_PR_commitOrRollback:
+ printfd(__FILE__, "PDUs: commitOrRollback\n");
+ break;
+ default:
+ printfd(__FILE__, "PDUs: default\n");
+ }
+asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+return 0;
+}
+
+int ParseIntInRange(const std::string & str,
+ int min,
+ int max,
+ int * val)
+{
+if (str2x(str.c_str(), *val))
+ {
+ return -1;
+ }
+if (*val < min || *val > max)
+ {
+ return -1;
+ }
+return 0;
+}
+
+SNMP_AGENT_SETTINGS::SNMP_AGENT_SETTINGS()
+ : ip(0),
+ port(0)
+{}
+
+int SNMP_AGENT_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
+{
+PARAM_VALUE pv;
+std::vector<PARAM_VALUE>::const_iterator pvi;
+int p;
+///////////////////////////
+pv.param = "Port";
+pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
+if (pvi == s.moduleParams.end())
+ {
+ errorStr = "Parameter \'Port\' not found.";
+ printfd(__FILE__, "Parameter 'Port' not found\n");
+ return -1;
+ }
+if (ParseIntInRange(pvi->value[0], 2, 65535, &p))
+ {
+ errorStr = "Cannot parse parameter \'Port\': " + errorStr;
+ printfd(__FILE__, "Cannot parse parameter 'Port'\n");
+ return -1;
+ }
+port = p;
+
+pv.param = "Password";
+pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
+if (pvi == s.moduleParams.end())
+ {
+ errorStr = "Parameter \'Password\' not found.";
+ printfd(__FILE__, "Parameter 'Password' not found\n");
+ password = "";
+ }
+else
+ {
+ password = pvi->value[0];
+ }
+
+pv.param = "Server";
+pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
+if (pvi == s.moduleParams.end())
+ {
+ errorStr = "Parameter \'Server\' not found.";
+ printfd(__FILE__, "Parameter 'Server' not found\n");
+ return -1;
+ }
+ip = inet_strington(pvi->value[0]);
+
+return 0;
+}
+
SNMP_AGENT::SNMP_AGENT()
: PLUGIN(),
running(false),
- stopped(true)
+ stopped(true),
+ sock(-1)
{
pthread_mutex_init(&mutex, NULL);
}
int SNMP_AGENT::ParseSettings()
{
-return 0;
+return snmpAgentSettings.ParseSettings(settings);
}
int SNMP_AGENT::Start()
{
+if (PrepareNet())
+ return -1;
+
+if (!running)
+ {
+ if (pthread_create(&thread, NULL, Runner, this))
+ {
+ errorStr = "Cannot create thread.";
+ printfd(__FILE__, "Cannot create thread\n");
+ return -1;
+ }
+ }
+
return 0;
}
int SNMP_AGENT::Stop()
{
+running = false;
+
+close(sock);
+
+if (!stopped)
+ {
+ //5 seconds to thread stops itself
+ for (int i = 0; i < 25 && !stopped; i++)
+ {
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
+ }
+
+ //after 5 seconds waiting thread still running. now killing it
+ if (!stopped)
+ {
+ if (pthread_kill(thread, SIGINT))
+ {
+ errorStr = "Cannot kill thread.";
+ printfd(__FILE__, "Cannot kill thread\n");
+ return -1;
+ }
+ printfd(__FILE__, "SNMP_AGENT killed Run\n");
+ }
+ }
+
return 0;
}
void SNMP_AGENT::Run()
{
+SendOpenPDU(sock);
+running = true;
+while(running)
+ {
+ RecvSMUXPDUs(sock);
+ struct timespec ts = {1, 0};
+ nanosleep(&ts, NULL);
+ }
+SendClosePDU(sock);
+stopped = true;
+}
+
+bool SNMP_AGENT::PrepareNet()
+{
+sock = socket(AF_INET, SOCK_STREAM, 0);
+
+if (sock < 0)
+ {
+ errorStr = "Cannot create socket.";
+ printfd(__FILE__, "Cannot create socket\n");
+ return true;
+ }
+
+struct sockaddr_in addr;
+
+addr.sin_family = AF_INET;
+addr.sin_port = htons(snmpAgentSettings.GetPort());
+addr.sin_addr.s_addr = snmpAgentSettings.GetIP();
+
+if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
+ {
+ errorStr = "Cannot connect.";
+ printfd(__FILE__, "Cannot connect. Message: '%s'\n", strerror(errno));
+ return true;
+ }
+
+return false;
}
git.stg.codes / stg.git / commitdiff