Request dispatching added

[stg.git] / projects / stargazer / plugins / other / snmp / snmp.cpp

diff --git a/projects/stargazer/plugins/other/snmp/snmp.cpp b/projects/stargazer/plugins/other/snmp/snmp.cpp
index 8587c1bcb2f7d946dab5941ff8d03ced8aabed39..ff0cb61483e249a289b82de1f6103aa3588ba9f9 100644 (file)
--- a/projects/stargazer/plugins/other/snmp/snmp.cpp
+++ b/projects/stargazer/plugins/other/snmp/snmp.cpp
@@ -12,7 +12,7 @@
 
 #include "asn1/OpenPDU.h"
 #include "asn1/ClosePDU.h"
 
 #include "asn1/OpenPDU.h"
 #include "asn1/ClosePDU.h"

-#include "asn1/SMUX-PDUs.h"
+#include "asn1/RReqPDU.h"

 #include "asn1/OBJECT_IDENTIFIER.h"
 #include "asn1/ber_decoder.h"
 #include "asn1/der_encoder.h"
 #include "asn1/OBJECT_IDENTIFIER.h"
 #include "asn1/ber_decoder.h"
 #include "asn1/der_encoder.h"


@@ -20,6 +20,8 @@
 #include "snmp.h"
 #include "stg/common.h"
 
 #include "snmp.h"
 #include "stg/common.h"
 

+bool WaitPackets(int sd);
+

 class SNMP_AGENT_CREATOR
 {
 private:
 class SNMP_AGENT_CREATOR
 {
 private:


@@ -32,6 +34,7 @@ public:
         };
     ~SNMP_AGENT_CREATOR()
         {
         };
     ~SNMP_AGENT_CREATOR()
         {

+        printfd(__FILE__, "SNMP_AGENT_CREATOR::~SNMP_AGENT_CREATOR()\n");

         delete snmpAgent;
         };
 
         delete snmpAgent;
         };
 


@@ -48,33 +51,28 @@ PLUGIN * GetPlugin()
 return sac.GetPlugin();
 }
 
 return sac.GetPlugin();
 }
 

-int output(const void * buffer, size_t size, void * data)
-{
-int * fd = static_cast<int *>(data);
-return write(*fd, buffer, size);
-}
-

 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;
 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;
+OpenPDU_t msg;
+
+memset(&msg, 0, sizeof(msg));

 
 msg.present = OpenPDU_PR_simple;
 
 msg.present = OpenPDU_PR_simple;

-asn_long2INTEGER(&msg.choice.simple.version, 1);
+asn_long2INTEGER(&msg.choice.simple.version, SimpleOpen__version_version_1);

 OBJECT_IDENTIFIER_set_arcs(&msg.choice.simple.identity,
                            oid,
                            sizeof(oid[0]),
 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);
+                           7);
+OCTET_STRING_fromString(&msg.choice.simple.description,
+                     description);
+OCTET_STRING_fromString(&msg.choice.simple.password,
+                     "");

 
 

-error = der_encode(&asn_DEF_OpenPDU, &msg, output, &fd);
+char buffer[1024];
+error = der_encode_to_buffer(&asn_DEF_OpenPDU, &msg, buffer, sizeof(buffer));

 
 if (error.encoded == -1)
     {
 
 if (error.encoded == -1)
     {


@@ -84,17 +82,23 @@ if (error.encoded == -1)
     }
 else
     {
     }
 else
     {

-    printfd(__FILE__, "OpenPDU encoded successfully");
+    write(fd, buffer, error.encoded);
+    printfd(__FILE__, "OpenPDU encoded successfully to %d bytes\n", error.encoded);

     }
 return 0;
 }
 
 int SendClosePDU(int fd)
 {
     }
 return 0;
 }
 
 int SendClosePDU(int fd)
 {

-ClosePDU msg = ClosePDU_goingDown;
+ClosePDU_t msg;
+
+memset(&msg, 0, sizeof(msg));

 
 

+asn_long2INTEGER(&msg, ClosePDU_goingDown);
+
+char buffer[1024];

 asn_enc_rval_t error;
 asn_enc_rval_t error;

-error = der_encode(&asn_DEF_ClosePDU, &msg, output, &fd);
+error = der_encode_to_buffer(&asn_DEF_ClosePDU, &msg, buffer, sizeof(buffer));

 
 if (error.encoded == -1)
     {
 
 if (error.encoded == -1)
     {


@@ -104,53 +108,63 @@ if (error.encoded == -1)
     }
 else
     {
     }
 else
     {

-    printfd(__FILE__, "ClosePDU encoded successfully");
+    write(fd, buffer, error.encoded);
+    printfd(__FILE__, "ClosePDU encoded successfully\n");

     }
 return 0;
 }
 
     }
 return 0;
 }
 

-int RecvSMUXPDUs(int fd)
+int SendRReqPDU(int fd)

 {
 {

-char buffer[8192];
-SMUX_PDUs * pdus;
+int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1};
+asn_enc_rval_t error;
+RReqPDU_t msg;
+
+memset(&msg, 0, sizeof(msg));
+
+msg.priority = 0;
+asn_long2INTEGER(&msg.operation, RReqPDU__operation_readOnly);
+OBJECT_IDENTIFIER_set_arcs(&msg.subtree,
+                           oid,
+                           sizeof(oid[0]),
+                           8);
+
+char buffer[1024];
+error = der_encode_to_buffer(&asn_DEF_RReqPDU, &msg, buffer, sizeof(buffer));
+
+if (error.encoded == -1)
+    {
+    printfd(__FILE__, "Could not encode RReqPDU (at %s)\n",
+            error.failed_type ? error.failed_type->name : "unknown");
+    return -1;
+    }
+else
+    {
+    write(fd, buffer, error.encoded);
+    printfd(__FILE__, "RReqPDU encoded successfully to %d bytes\n", error.encoded);
+    }
+return 0;
+}
+
+SMUX_PDUs_t * RecvSMUXPDUs(int fd)
+{
+char buffer[1024];
+SMUX_PDUs_t * pdus = NULL;
+
+memset(buffer, 0, sizeof(buffer));

 
 size_t length = read(fd, buffer, sizeof(buffer));
 
 size_t length = read(fd, buffer, sizeof(buffer));

+if (length < 1)
+    return NULL;

 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);
 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;
+    return NULL;

     }
     }

-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;
+return pdus;

 }
 
 int ParseIntInRange(const std::string & str,
 }
 
 int ParseIntInRange(const std::string & str,


@@ -229,10 +243,20 @@ SNMP_AGENT::SNMP_AGENT()
       sock(-1)
 {
 pthread_mutex_init(&mutex, NULL);
       sock(-1)
 {
 pthread_mutex_init(&mutex, NULL);

+
+smuxHandlers[SMUX_PDUs_PR_close] = &SNMP_AGENT::CloseHandler;
+smuxHandlers[SMUX_PDUs_PR_registerResponse] = &SNMP_AGENT::RegisterResponseHandler;
+smuxHandlers[SMUX_PDUs_PR_pdus] = &SNMP_AGENT::PDUsHandler;
+smuxHandlers[SMUX_PDUs_PR_commitOrRollback] = &SNMP_AGENT::CommitOrRollbackHandler;
+
+pdusHandlers[PDUs_PR_get_request] = &SNMP_AGENT::GetRequestHandler;
+pdusHandlers[PDUs_PR_get_next_request] = &SNMP_AGENT::GetNextRequestHandler;
+pdusHandlers[PDUs_PR_set_request] = &SNMP_AGENT::SetRequestHandler;

 }
 
 SNMP_AGENT::~SNMP_AGENT()
 {
 }
 
 SNMP_AGENT::~SNMP_AGENT()
 {

+printfd(__FILE__, "SNMP_AGENT::~SNMP_AGENT()\n");

 pthread_mutex_destroy(&mutex);
 }
 
 pthread_mutex_destroy(&mutex);
 }
 


@@ -261,10 +285,9 @@ return 0;
 
 int SNMP_AGENT::Stop()
 {
 
 int SNMP_AGENT::Stop()
 {

+printfd(__FILE__, "SNMP_AGENT::Stop() - Before\n");

 running = false;
 
 running = false;
 

-close(sock);
-

 if (!stopped)
     {
     //5 seconds to thread stops itself
 if (!stopped)
     {
     //5 seconds to thread stops itself


@@ -277,16 +300,22 @@ if (!stopped)
     //after 5 seconds waiting thread still running. now killing it
     if (!stopped)
         {
     //after 5 seconds waiting thread still running. now killing it
     if (!stopped)
         {

+        printfd(__FILE__, "SNMP_AGENT::Stop() - failed to stop thread, killing it\n");

         if (pthread_kill(thread, SIGINT))
             {
             errorStr = "Cannot kill thread.";
         if (pthread_kill(thread, SIGINT))
             {
             errorStr = "Cannot kill thread.";

-            printfd(__FILE__, "Cannot kill thread\n");
+            printfd(__FILE__, "SNMP_AGENT::Stop() - Cannot kill thread\n");

             return -1;
             }
             return -1;
             }

-        printfd(__FILE__, "SNMP_AGENT killed Run\n");
+        printfd(__FILE__, "SNMP_AGENT::Stop() -  killed Run\n");

         }
     }
 
         }
     }
 

+pthread_join(thread, NULL);
+
+close(sock);
+
+printfd(__FILE__, "SNMP_AGENT::Stop() - After\n");

 return 0;
 }
 
 return 0;
 }
 


@@ -302,13 +331,22 @@ return NULL;
 void SNMP_AGENT::Run()
 {
 SendOpenPDU(sock);
 void SNMP_AGENT::Run()
 {
 SendOpenPDU(sock);

+SendRReqPDU(sock);

 running = true;
 running = true;

+stopped = false;
+printfd(__FILE__, "SNMP_AGENT::Run() - Before\n");

 while(running)
     {
 while(running)
     {

-    RecvSMUXPDUs(sock);
-    struct timespec ts = {1, 0};
-    nanosleep(&ts, NULL);
+    if (WaitPackets(sock))
+        {
+        SMUX_PDUs_t * pdus = RecvSMUXPDUs(sock);
+        if (pdus)
+            DispatchPDUs(pdus);
+        }
+    if (!running)
+        break;

     }
     }

+printfd(__FILE__, "SNMP_AGENT::Run() - After\n");

 SendClosePDU(sock);
 stopped = true;
 }
 SendClosePDU(sock);
 stopped = true;
 }


@@ -339,3 +377,133 @@ if (connect(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr)))
 
 return false;
 }
 
 return false;
 }

+
+bool WaitPackets(int sd)
+{
+fd_set rfds;
+FD_ZERO(&rfds);
+FD_SET(sd, &rfds);
+
+struct timeval tv;
+tv.tv_sec = 0;
+tv.tv_usec = 500000;
+
+int res = select(sd + 1, &rfds, NULL, NULL, &tv);
+if (res == -1) // Error
+    {
+    if (errno != EINTR)
+        {
+        printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
+        }
+    return false;
+    }
+
+if (res == 0) // Timeout
+    {
+    return false;
+    }
+
+return true;
+}
+
+bool SNMP_AGENT::DispatchPDUs(const SMUX_PDUs_t * pdus)
+{
+SMUXHandlers::iterator it;
+it = smuxHandlers.find(pdus->present);
+if (it != smuxHandlers.end())
+    {
+    return (this->*(it->second))(pdus);
+    }
+else
+    {
+    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_registerRequest:
+            printfd(__FILE__, "PDUs: registerRequest\n");
+            break;
+        default:
+            printfd(__FILE__, "PDUs: undefined\n");
+        }
+    asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+    }
+return false;
+}
+
+bool SNMP_AGENT::CloseHandler(const SMUX_PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::CloseHandler()\n");
+asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+return false;
+}
+
+bool SNMP_AGENT::RegisterResponseHandler(const SMUX_PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::RegisterResponseHandler()\n");
+asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+return false;
+}
+
+bool SNMP_AGENT::PDUsHandler(const SMUX_PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::PDUsHandler()\n");
+asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+PDUsHandlers::iterator it;
+it = pdusHandlers.find(pdus->choice.pdus.present);
+if (it != pdusHandlers.end())
+    {
+    return (this->*(it->second))(&pdus->choice.pdus);
+    }
+else
+    {
+    switch (pdus->present)
+        {
+        case PDUs_PR_NOTHING:
+            printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - nothing\n");
+            break;
+        case PDUs_PR_get_response:
+            printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - get response\n");
+            break;
+        case PDUs_PR_trap:
+            printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - trap\n");
+            break;
+        default:
+            printfd(__FILE__, "SNMP_AGENT::PDUsHandler() - undefined\n");
+        }
+    }
+return false;
+}
+
+bool SNMP_AGENT::CommitOrRollbackHandler(const SMUX_PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::CommitOrRollbackHandler()\n");
+asn_fprint(stderr, &asn_DEF_SMUX_PDUs, pdus);
+return false;
+}
+
+bool SNMP_AGENT::GetRequestHandler(const PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::GetRequestHandler()\n");
+asn_fprint(stderr, &asn_DEF_PDUs, pdus);
+return false;
+}
+
+bool SNMP_AGENT::GetNextRequestHandler(const PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::GetNextRequestHandler()\n");
+asn_fprint(stderr, &asn_DEF_PDUs, pdus);
+return false;
+}
+
+bool SNMP_AGENT::SetRequestHandler(const PDUs_t * pdus)
+{
+printfd(__FILE__, "SNMP_AGENT::SetRequestHandler()\n");
+asn_fprint(stderr, &asn_DEF_PDUs, pdus);
+return false;
+}
+