Help book chapter 1 complete

[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 444b812b3da04e34625cd7e541817bacbb5d27cf..2884e6fc394d583867b93165e7a9781e1d97deaa 100644 (file)
--- a/projects/stargazer/plugins/other/snmp/snmp.cpp
+++ b/projects/stargazer/plugins/other/snmp/snmp.cpp
@@ -13,6 +13,10 @@
 #include "asn1/OpenPDU.h"
 #include "asn1/ClosePDU.h"
 #include "asn1/RReqPDU.h"
 #include "asn1/OpenPDU.h"
 #include "asn1/ClosePDU.h"
 #include "asn1/RReqPDU.h"

+#include "asn1/GetRequest-PDU.h"
+#include "asn1/GetResponse-PDU.h"
+#include "asn1/VarBindList.h"
+#include "asn1/VarBind.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"


@@ -22,6 +26,62 @@
 
 bool WaitPackets(int sd);
 
 
 bool WaitPackets(int sd);
 

+std::string OI2String(OBJECT_IDENTIFIER_t * oi)
+{
+std::string res;
+
+int arcs[1024];
+int count = OBJECT_IDENTIFIER_get_arcs(oi, arcs, sizeof(arcs[0]), 1024);
+
+if (count > 1024)
+    return "";
+
+for (int i = 0; i < count; ++i)
+    {
+    res += ".";
+    std::string arc;
+    strprintf(&arc, "%d", arcs[i]);
+    res += arc;
+    }
+
+return res;
+}
+
+bool String2OI(const std::string & str, OBJECT_IDENTIFIER_t * oi)
+{
+size_t left = 0, pos = 0, arcPos = 0;
+int arcs[1024];
+pos = str.find_first_of('.', left);
+if (pos == 0)
+    {
+    left = 1;
+    pos = str.find_first_of('.', left);
+    }
+while (pos != std::string::npos)
+    {
+    int arc = 0;
+    if (str2x(str.substr(left, left - pos), arc))
+        {
+        return false;
+        }
+    arcs[arcPos++] = arc;
+    left = pos + 1;
+    pos = str.find_first_of('.', left);
+    }
+if (left < str.length())
+    {
+    int arc = 0;
+    if (str2x(str.substr(left, left - pos), arc))
+        {
+        return false;
+        }
+    arcs[arcPos++] = arc;
+    }
+printfd(__FILE__, "String2OI() - arcPos: %d\n", arcPos);
+OBJECT_IDENTIFIER_set_arcs(oi, arcs, sizeof(arcs[0]), arcPos);
+return true;
+}
+

 class SNMP_AGENT_CREATOR
 {
 private:
 class SNMP_AGENT_CREATOR
 {
 private:


@@ -54,7 +114,7 @@ return sac.GetPlugin();
 int SendOpenPDU(int fd)
 {
 const char * description = "Stg SNMP Agent";
 int SendOpenPDU(int fd)
 {
 const char * description = "Stg SNMP Agent";

-int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1, 5, 2, 1, 1};
+//int oid[] = {1, 3, 6, 1, 4, 1, 9363, 1, 5, 2, 1, 1};

 asn_enc_rval_t error;
 OpenPDU_t msg;
 
 asn_enc_rval_t error;
 OpenPDU_t msg;
 


@@ -62,10 +122,15 @@ memset(&msg, 0, sizeof(msg));
 
 msg.present = OpenPDU_PR_simple;
 asn_long2INTEGER(&msg.choice.simple.version, SimpleOpen__version_version_1);
 
 msg.present = OpenPDU_PR_simple;
 asn_long2INTEGER(&msg.choice.simple.version, SimpleOpen__version_version_1);

-OBJECT_IDENTIFIER_set_arcs(&msg.choice.simple.identity,
+/*OBJECT_IDENTIFIER_set_arcs(&msg.choice.simple.identity,

                            oid,
                            sizeof(oid[0]),
                            oid,
                            sizeof(oid[0]),

-                           7);
+                           7);*/
+if (!String2OI(".1.3.6.1.4.1.9363", &msg.choice.simple.identity))
+    {
+    printfd(__FILE__, "SendOpenPDU() - failed to convert string to OBJECT_IDENTIFIER\n");
+    return -1;
+    }

 OCTET_STRING_fromString(&msg.choice.simple.description,
                      description);
 OCTET_STRING_fromString(&msg.choice.simple.password,
 OCTET_STRING_fromString(&msg.choice.simple.description,
                      description);
 OCTET_STRING_fromString(&msg.choice.simple.password,


@@ -146,6 +211,55 @@ else
 return 0;
 }
 
 return 0;
 }
 

+int SendGetResponsePDU(int fd, GetResponse_PDU_t * getResponse)
+{
+asn_enc_rval_t error;
+
+char buffer[1024];
+error = der_encode_to_buffer(&asn_DEF_GetResponse_PDU, getResponse, buffer, sizeof(buffer));
+
+if (error.encoded == -1)
+    {
+    printfd(__FILE__, "Could not encode GetResponsePDU (at %s)\n",
+            error.failed_type ? error.failed_type->name : "unknown");
+    return -1;
+    }
+else
+    {
+    write(fd, buffer, error.encoded);
+    printfd(__FILE__, "GetResponsePDU encoded successfully to %d bytes\n", error.encoded);
+    }
+return 0;
+}
+
+int SendGetResponseErrorPDU(int fd, const PDU_t * getRequest, int errorStatus, int errorIndex)
+{
+asn_enc_rval_t error;
+GetResponse_PDU_t msg;
+
+memset(&msg, 0, sizeof(msg));
+
+msg.request_id = getRequest->request_id;
+asn_long2INTEGER(&msg.error_status, errorStatus);
+asn_long2INTEGER(&msg.error_index, errorIndex);
+
+char buffer[1024];
+error = der_encode_to_buffer(&asn_DEF_GetResponse_PDU, &msg, buffer, sizeof(buffer));
+
+if (error.encoded == -1)
+    {
+    printfd(__FILE__, "Could not encode GetResponsePDU for error (at %s)\n",
+            error.failed_type ? error.failed_type->name : "unknown");
+    return -1;
+    }
+else
+    {
+    write(fd, buffer, error.encoded);
+    printfd(__FILE__, "GetResponsePDU for error encoded successfully to %d bytes\n", error.encoded);
+    }
+return 0;
+}
+

 SMUX_PDUs_t * RecvSMUXPDUs(int fd)
 {
 char buffer[1024];
 SMUX_PDUs_t * RecvSMUXPDUs(int fd)
 {
 char buffer[1024];


@@ -238,6 +352,8 @@ return 0;
 
 SNMP_AGENT::SNMP_AGENT()
     : PLUGIN(),
 
 SNMP_AGENT::SNMP_AGENT()
     : PLUGIN(),

+      users(NULL),
+      tariffs(NULL),

       running(false),
       stopped(true),
       sock(-1)
       running(false),
       stopped(true),
       sock(-1)


@@ -256,6 +372,9 @@ pdusHandlers[PDUs_PR_set_request] = &SNMP_AGENT::SetRequestHandler;
 
 SNMP_AGENT::~SNMP_AGENT()
 {
 
 SNMP_AGENT::~SNMP_AGENT()
 {

+Sensors::iterator it;
+for (it = sensors.begin(); it != sensors.end(); ++it)
+    delete it->second;

 printfd(__FILE__, "SNMP_AGENT::~SNMP_AGENT()\n");
 pthread_mutex_destroy(&mutex);
 }
 printfd(__FILE__, "SNMP_AGENT::~SNMP_AGENT()\n");
 pthread_mutex_destroy(&mutex);
 }


@@ -270,6 +389,20 @@ int SNMP_AGENT::Start()
 if (PrepareNet())
     return -1;
 
 if (PrepareNet())
     return -1;
 

+// Users
+sensors[".1.3.6.1.4.1.9363.1.1.1"] = new TotalUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.2"] = new ConnectedUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.3"] = new AuthorizedUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.4"] = new AlwaysOnlineUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.5"] = new NoCashUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.7"] = new DisabledDetailStatsUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.8"] = new DisabledUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.9"] = new PassiveUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.10"] = new CreditUsersSensor(*users);
+sensors[".1.3.6.1.4.1.9363.1.1.11"] = new FreeMbUsersSensor(*users);
+// Tariffs
+sensors[".1.3.6.1.4.1.9363.1.2.1"] = new TotalTariffsSensor(*tariffs);
+

 if (!running)
     {
     if (pthread_create(&thread, NULL, Runner, this))
 if (!running)
     {
     if (pthread_create(&thread, NULL, Runner, this))


@@ -453,6 +586,29 @@ bool SNMP_AGENT::PDUsHandler(const SMUX_PDUs_t * pdus)
 {
 printfd(__FILE__, "SNMP_AGENT::PDUsHandler()\n");
 asn_fprint(stderr, &asn_DEF_SMUX_PDUs, 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;
 }
 
 return false;
 }
 


@@ -467,6 +623,38 @@ bool SNMP_AGENT::GetRequestHandler(const PDUs_t * pdus)
 {
 printfd(__FILE__, "SNMP_AGENT::GetRequestHandler()\n");
 asn_fprint(stderr, &asn_DEF_PDUs, pdus);
 {
 printfd(__FILE__, "SNMP_AGENT::GetRequestHandler()\n");
 asn_fprint(stderr, &asn_DEF_PDUs, pdus);

+const GetRequest_PDU_t * getRequest = &pdus->choice.get_request;
+GetResponse_PDU_t msg;
+VarBindList_t * varBindList = &msg.variable_bindings;
+memset(&msg, 0, sizeof(msg));
+
+msg.request_id = getRequest->request_id;
+asn_long2INTEGER(&msg.error_status, 0);
+asn_long2INTEGER(&msg.error_index, 0);
+
+const VarBindList_t * vbl = &getRequest->variable_bindings; 
+for (int i = 0; i < vbl->list.count; ++i)
+    {
+    VarBind_t * vb = getRequest->variable_bindings.list.array[i];
+    Sensors::iterator it;
+    it = sensors.find(OI2String(&vb->name));
+    if (it == sensors.end())
+        {
+        SendGetResponseErrorPDU(sock, getRequest, PDU__error_status_noSuchName, i);
+        return true;
+        }
+
+    VarBind_t newVb;
+    memset(&newVb, 0, sizeof(newVb));
+
+    newVb.name = vb->name;
+    it->second->GetValue(&newVb.value);
+
+    ASN_SEQUENCE_ADD(varBindList, &newVb);
+    }
+
+SendGetResponsePDU(sock, &msg);
+asn_fprint(stderr, &asn_DEF_PDU, &msg);

 return false;
 }
 
 return false;
 }
 


@@ -481,6 +669,7 @@ bool SNMP_AGENT::SetRequestHandler(const PDUs_t * pdus)
 {
 printfd(__FILE__, "SNMP_AGENT::SetRequestHandler()\n");
 asn_fprint(stderr, &asn_DEF_PDUs, pdus);
 {
 printfd(__FILE__, "SNMP_AGENT::SetRequestHandler()\n");
 asn_fprint(stderr, &asn_DEF_PDUs, pdus);

+SendGetResponseErrorPDU(sock, &pdus->choice.set_request, PDU__error_status_readOnly, 0);

 return false;
 }
 
 return false;
 }