main.cpp

00001 /**
00002 * Agentbed library (SNMP)
00003 *  Modified for mbed, 2010 Suga.
00004 *
00005 * Agentuino SNMP Agent Library Prototyping...
00006 *
00007 * Copyright 2010 Eric C. Gionet <lavco_eg@hotmail.com>
00008 *
00009 */
00010 #include "mbed.h"
00011 #include "Agentbed.h"
00012 #include "EthernetNetIf.h"
00013 
00014 EthernetNetIf eth;
00015 AgentbedClass Agentbed;
00016 
00017 // RFC1213-MIB OIDs
00018 // .iso (.1)
00019 // .iso.org (.1.3)
00020 // .iso.org.dod (.1.3.6)
00021 // .iso.org.dod.internet (.1.3.6.1)
00022 // .iso.org.dod.internet.mgmt (.1.3.6.1.2)
00023 // .iso.org.dod.internet.mgmt.mib-2 (.1.3.6.1.2.1)
00024 // .iso.org.dod.internet.mgmt.mib-2.system (.1.3.6.1.2.1.1)
00025 // .iso.org.dod.internet.mgmt.mib-2.system.sysDescr (.1.3.6.1.2.1.1.1)
00026 const char sysDescr[]    = "1.3.6.1.2.1.1.1.0";  // read-only  (DisplayString)
00027 // .iso.org.dod.internet.mgmt.mib-2.system.sysObjectID (.1.3.6.1.2.1.1.2)
00028 const char sysObjectID[] = "1.3.6.1.2.1.1.2.0";  // read-only  (ObjectIdentifier)
00029 // .iso.org.dod.internet.mgmt.mib-2.system.sysUpTime (.1.3.6.1.2.1.1.3)
00030 const char sysUpTime[]   = "1.3.6.1.2.1.1.3.0";  // read-only  (TimeTicks)
00031 // .iso.org.dod.internet.mgmt.mib-2.system.sysContact (.1.3.6.1.2.1.1.4)
00032 const char sysContact[]  = "1.3.6.1.2.1.1.4.0";  // read-write (DisplayString)
00033 // .iso.org.dod.internet.mgmt.mib-2.system.sysName (.1.3.6.1.2.1.1.5)
00034 const char sysName[]     = "1.3.6.1.2.1.1.5.0";  // read-write (DisplayString)
00035 // .iso.org.dod.internet.mgmt.mib-2.system.sysLocation (.1.3.6.1.2.1.1.6)
00036 const char sysLocation[] = "1.3.6.1.2.1.1.6.0";  // read-write (DisplayString)
00037 // .iso.org.dod.internet.mgmt.mib-2.system.sysServices (.1.3.6.1.2.1.1.7)
00038 const char sysServices[] = "1.3.6.1.2.1.1.7.0";  // read-only  (Integer)
00039 //
00040 // Arduino defined OIDs
00041 // .iso.org.dod.internet.private (.1.3.6.1.4)
00042 // .iso.org.dod.internet.private.enterprises (.1.3.6.1.4.1)
00043 // .iso.org.dod.internet.private.enterprises.arduino (.1.3.6.1.4.1.36582)
00044 //
00045 //
00046 // RFC1213 local values
00047 static char locDescr[]              = "Agentbed, a light-weight SNMP Agent.";  // read-only (static)
00048 static char locObjectID[]           = "1.3.6.1.4.1.36582";                       // read-only (static)
00049 static uint32_t locUpTime           = 0;                                        // read-only (static)
00050 static char locContact[]            = "<root@weather>";                            // should be stored/read from EEPROM - read/write (not done for simplicity)
00051 static char locName[]               = "weather.mbed";                              // should be stored/read from EEPROM - read/write (not done for simplicity)
00052 static char locLocation[]           = "weather";                        // should be stored/read from EEPROM - read/write (not done for simplicity)
00053 static int32_t locServices          = 7;                                        // read-only (static)
00054 
00055 uint32_t prevMillis = 0;
00056 char oid[SNMP_MAX_OID_LEN];
00057 SNMP_API_STAT_CODES api_status;
00058 SNMP_ERR_CODES status;
00059 
00060 
00061 void pduReceived()
00062 {
00063   SNMP_PDU pdu;
00064   //
00065   api_status = Agentbed.requestPdu(&pdu);
00066   //
00067   if ( pdu.type == SNMP_PDU_GET || pdu.type == SNMP_PDU_GET_NEXT || pdu.type == SNMP_PDU_SET
00068     && pdu.error == SNMP_ERR_NO_ERROR && api_status == SNMP_API_STAT_SUCCESS ) {
00069     //
00070     pdu.OID.toString(oid);
00071     //
00072     pdu.error = SNMP_ERR_READ_ONLY;
00073     //
00074     if ( strcmp(oid, sysDescr ) == 0 ) {
00075       // handle sysDescr (set/get) requests
00076       if ( pdu.type == SNMP_PDU_GET ) {
00077         // response packet from get-request - locDescr
00078         status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locDescr);
00079         pdu.error = status;
00080       }
00081     } else if ( strcmp(oid, sysObjectID ) == 0 ) {
00082       // handle sysName (set/get) requests
00083       if ( pdu.type == SNMP_PDU_GET ) {
00084         // response packet from get-request - locUpTime
00085         status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locObjectID);
00086         pdu.error = status;
00087       }
00088     } else if ( strcmp(oid, sysUpTime ) == 0 ) {
00089       // handle sysName (set/get) requests
00090       if ( pdu.type == SNMP_PDU_GET ) {
00091         // response packet from get-request - locUpTime
00092         status = pdu.VALUE.encode(SNMP_SYNTAX_TIME_TICKS, locUpTime);
00093         pdu.error = status;
00094       }
00095     } else if ( strcmp(oid, sysName ) == 0 ) {
00096       // handle sysName (set/get) requests
00097       if ( pdu.type == SNMP_PDU_GET ) {
00098         // response packet from get-request - locName
00099         status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locName);
00100         pdu.error = status;
00101       }
00102     } else if ( strcmp(oid, sysContact ) == 0 ) {
00103       // handle sysContact (set/get) requests
00104       if ( pdu.type == SNMP_PDU_GET ) {
00105         // response packet from get-request - locContact
00106         status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locContact);
00107         pdu.error = status;
00108       }
00109     } else if ( strcmp(oid, sysLocation ) == 0 ) {
00110       // handle sysLocation (set/get) requests
00111       if ( pdu.type == SNMP_PDU_GET ) {
00112         // response packet from get-request - locLocation
00113         status = pdu.VALUE.encode(SNMP_SYNTAX_OCTETS, locLocation);
00114         pdu.error = status;
00115       }
00116     } else if ( strcmp(oid, sysServices) == 0 ) {
00117       // handle sysServices (set/get) requests
00118       if ( pdu.type == SNMP_PDU_GET ) {
00119         // response packet from get-request - locServices
00120         status = pdu.VALUE.encode(SNMP_SYNTAX_INT, locServices);
00121         pdu.error = status;
00122       }
00123     } else {
00124       // oid does not exist
00125       //
00126       // response packet - object not found
00127       pdu.error = SNMP_ERR_NO_SUCH_NAME;
00128     }
00129     //
00130     pdu.type = SNMP_PDU_RESPONSE;
00131 
00132     Agentbed.responsePdu(&pdu);
00133   }
00134   //
00135   Agentbed.freePdu(&pdu);
00136   //
00137   //Serial << "UDP Packet Received End.." << " RAM:" << freeMemory() << endl;
00138 }
00139 
00140 
00141 
00142 
00143 int main ()
00144 {
00145     EthernetErr r;
00146 
00147     r = eth.setup();
00148     if (r) {
00149         printf("Error %d in setup.\n", r);
00150         return -1;
00151     }
00152 
00153     api_status = Agentbed.begin(&eth);
00154     if (api_status != SNMP_API_STAT_SUCCESS) {
00155         return -1;
00156     }
00157 
00158     Agentbed.onPduReceive(pduReceived);
00159     printf("Agentbed\r\n");
00160 
00161     while (1) {
00162         wait(1);
00163         locUpTime += 100;
00164         Net::poll();
00165     }
00166 }