Partially working snmp agent

diff --git a/projects/stargazer/plugins/other/snmp/Makefile b/projects/stargazer/plugins/other/snmp/Makefile
index 2f6eeb741e5fc90a978008f1601adac54feaa750..047c29ec775188b6bd1bcab533d2c8edb69587df 100644 (file)
--- a/projects/stargazer/plugins/other/snmp/Makefile
+++ b/projects/stargazer/plugins/other/snmp/Makefile
@@ -45,7 +45,35 @@ SRCS =  snmp.cpp \
        asn1/ClosePDU.c \
        asn1/RReqPDU.c  \
        asn1/RRspPDU.c  \
        asn1/ClosePDU.c \
        asn1/RReqPDU.c  \
        asn1/RRspPDU.c  \

-       asn1/SOutPDU.c
+       asn1/SOutPDU.c \
+       asn1/ANY.c \
+       asn1/BOOLEAN.c \
+       asn1/INTEGER.c \
+       asn1/NULL.c \
+       asn1/NativeEnumerated.c \
+       asn1/NativeInteger.c \
+       asn1/OBJECT_IDENTIFIER.c \
+       asn1/asn_SEQUENCE_OF.c \
+       asn1/asn_SET_OF.c \
+       asn1/constr_CHOICE.c \
+       asn1/constr_SEQUENCE.c \
+       asn1/constr_SEQUENCE_OF.c \
+       asn1/constr_SET_OF.c \
+       asn1/OCTET_STRING.c \
+       asn1/BIT_STRING.c \
+       asn1/asn_codecs_prim.c \
+       asn1/ber_tlv_length.c \
+       asn1/ber_tlv_tag.c \
+       asn1/ber_decoder.c \
+       asn1/der_encoder.c \
+       asn1/constr_TYPE.c \
+       asn1/constraints.c \
+       asn1/xer_support.c \
+       asn1/xer_decoder.c \
+       asn1/xer_encoder.c \
+       asn1/per_support.c \
+       asn1/per_decoder.c \
+       asn1/per_encoder.c

 
 STGLIBS = -lstgcommon
 
 
 STGLIBS = -lstgcommon
 

diff --git a/projects/stargazer/plugins/other/snmp/snmp.cpp b/projects/stargazer/plugins/other/snmp/snmp.cpp
index 4d26a8b92a83f0b11200892a0016c0eeaba875d4..8587c1bcb2f7d946dab5941ff8d03ced8aabed39 100644 (file)
--- a/projects/stargazer/plugins/other/snmp/snmp.cpp
+++ b/projects/stargazer/plugins/other/snmp/snmp.cpp
@@ -1,4 +1,21 @@
+#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/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"
 
 #include "snmp.h"
 #include "stg/common.h"


@@ -24,7 +41,12 @@ public:
         };
 };
 
         };
 };
 

-SNMP_AGENT_CREATOR pc;
+SNMP_AGENT_CREATOR sac;
+
+PLUGIN * GetPlugin()
+{
+return sac.GetPlugin();
+}

 
 int output(const void * buffer, size_t size, void * data)
 {
 
 int output(const void * buffer, size_t size, void * data)
 {


@@ -32,9 +54,25 @@ int * fd = static_cast<int *>(data);
 return write(*fd, buffer, size);
 }
 
 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;
 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);
 
 
 error = der_encode(&asn_DEF_OpenPDU, &msg, output, &fd);
 


@@ -51,10 +89,144 @@ else
 return 0;
 }
 
 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),
 SNMP_AGENT::SNMP_AGENT()
     : PLUGIN(),
       running(false),

-      stopped(true)
+      stopped(true),
+      sock(-1)

 {
 pthread_mutex_init(&mutex, NULL);
 }
 {
 pthread_mutex_init(&mutex, NULL);
 }


@@ -66,16 +238,55 @@ pthread_mutex_destroy(&mutex);
 
 int SNMP_AGENT::ParseSettings()
 {
 
 int SNMP_AGENT::ParseSettings()
 {

-return 0;
+return snmpAgentSettings.ParseSettings(settings);

 }
 
 int SNMP_AGENT::Start()
 {
 }
 
 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()
 {
 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;
 }
 
 return 0;
 }
 


@@ -90,4 +301,41 @@ return NULL;
 
 void SNMP_AGENT::Run()
 {
 
 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;

 }
 }

diff --git a/projects/stargazer/plugins/other/snmp/snmp.h b/projects/stargazer/plugins/other/snmp/snmp.h
index 7f4d67d1566b22ee598ed1f13f08260fc14d6919..fe5fa05e9f34ab46eb39bccd5931d97bc3e84d00 100644 (file)
--- a/projects/stargazer/plugins/other/snmp/snmp.h
+++ b/projects/stargazer/plugins/other/snmp/snmp.h
@@ -4,7 +4,6 @@
 #include <pthread.h>
 
 #include <string>
 #include <pthread.h>
 
 #include <string>

-#include <list>

 
 #include "stg/os_int.h"
 #include "stg/plugin.h"
 
 #include "stg/os_int.h"
 #include "stg/plugin.h"


@@ -23,8 +22,16 @@ public:
     const std::string & GetStrError() const { return errorStr; }
     int ParseSettings(const MODULE_SETTINGS & s);
 
     const std::string & GetStrError() const { return errorStr; }
     int ParseSettings(const MODULE_SETTINGS & s);
 

+    uint32_t GetIP() const { return ip; }
+    uint16_t GetPort() const { return port; }
+    const std::string GetPassword() const { return password; }
+

 private:
     mutable std::string errorStr;
 private:
     mutable std::string errorStr;

+
+    uint32_t ip;
+    uint16_t port;
+    std::string password;

 };
 //-----------------------------------------------------------------------------
 class SNMP_AGENT : public PLUGIN {
 };
 //-----------------------------------------------------------------------------
 class SNMP_AGENT : public PLUGIN {


@@ -38,7 +45,7 @@ public:
     void SetTraffcounter(TRAFFCOUNTER *) {}
     void SetStore(STORE *) {}
     void SetStgSettings(const SETTINGS *) {}
     void SetTraffcounter(TRAFFCOUNTER *) {}
     void SetStore(STORE *) {}
     void SetStgSettings(const SETTINGS *) {}

-    void SetSettings(const MODULE_SETTINGS &) {}
+    void SetSettings(const MODULE_SETTINGS & s) { settings = s; }

     int ParseSettings();
 
     int Start();
     int ParseSettings();
 
     int Start();


@@ -54,6 +61,7 @@ public:
 private:
     static void * Runner(void * d);
     void Run();
 private:
     static void * Runner(void * d);
     void Run();

+    bool PrepareNet();

 
     mutable std::string errorStr;
     SNMP_AGENT_SETTINGS snmpAgentSettings;
 
     mutable std::string errorStr;
     SNMP_AGENT_SETTINGS snmpAgentSettings;


@@ -63,7 +71,11 @@ private:
     pthread_mutex_t mutex;
     bool running;
     bool stopped;
     pthread_mutex_t mutex;
     bool running;
     bool stopped;

+
+    int sock;

 };
 //-----------------------------------------------------------------------------
 
 };
 //-----------------------------------------------------------------------------
 

+extern "C" PLUGIN * GetPlugin();
+

 #endif
 #endif