Beispiel #1
0
void
snmp_enable_syslog_ident(const char *ident, const int facility)
{
    netsnmp_log_handler *logh;
    int                  found = 0;
    int                  enable = 1;
#ifdef WIN32
    HANDLE               eventlog_h;
#else
    void                *eventlog_h = NULL;
#endif

    snmp_disable_syslog();     /* only one syslog at a time */
#ifdef WIN32
    eventlog_h = OpenEventLog(NULL, ident);
    if (eventlog_h == NULL) {
	    /*
	     * Hmmm.....
	     * Maybe disable this handler, and log the error ?
	     */
        fprintf(stderr, "Could not open event log for %s. "
                "Last error: 0x%x\n", ident, GetLastError());
        enable = 0;
    }
#else
    openlog(snmp_log_syslogname(ident), LOG_CONS | LOG_PID, facility);
#endif

    for (logh = logh_head; logh; logh = logh->next)
        if (logh->type == NETSNMP_LOGHANDLER_SYSLOG) {
            logh->magic   = (void*)eventlog_h;
            logh->imagic  = enable;	/* syslog open */
            if (logh->enabled && (0 == enable))
                netsnmp_disable_this_loghandler(logh);
            else if ((0 == logh->enabled) && enable)
                netsnmp_enable_this_loghandler(logh);
            found         = 1;
	}

    if (!found) {
        logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_SYSLOG,
                                           LOG_DEBUG );
        if (logh) {
            logh->magic    = (void*)eventlog_h;
            logh->token    = strdup(ident);
            logh->imagic   = enable;	/* syslog open */
            if (logh->enabled && (0 == enable))
                netsnmp_disable_this_loghandler(logh);
            else if ((0 == logh->enabled) && enable)
                netsnmp_enable_this_loghandler(logh);
        }
    }
}
Beispiel #2
0
netsnmp_log_handler *
netsnmp_register_loghandler( int type, int priority )
{
    netsnmp_log_handler *logh;

    logh = SNMP_MALLOC_TYPEDEF(netsnmp_log_handler);
    if (!logh)
        return NULL;

    DEBUGMSGT(("logging:register", "registering log type %d with pri %d\n",
               type, priority));
    if (priority > LOG_DEBUG) {
        DEBUGMSGT(("logging:register", "  limiting pri %d to %d\n", priority,
                   LOG_DEBUG));
        priority = LOG_DEBUG;
    }

    logh->type     = type;
    switch ( type ) {
    case NETSNMP_LOGHANDLER_STDOUT:
        logh->imagic  = 1;
        logh->handler = log_handler_stdouterr;
        break;
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_STDIO
    case NETSNMP_LOGHANDLER_STDERR:
        logh->handler = log_handler_stdouterr;
        break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */

#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
    case NETSNMP_LOGHANDLER_FILE:
        logh->handler = log_handler_file;
        logh->imagic  = 1;
        break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
    case NETSNMP_LOGHANDLER_SYSLOG:
        logh->handler = log_handler_syslog;
        break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
    case NETSNMP_LOGHANDLER_CALLBACK:
        logh->handler = log_handler_callback;
        break;
    case NETSNMP_LOGHANDLER_NONE:
        logh->handler = log_handler_null;
        break;
    default:
        free(logh);
        return NULL;
    }
    logh->priority = priority;
    netsnmp_enable_this_loghandler(logh);
    netsnmp_add_loghandler( logh );
    return logh;
}
Beispiel #3
0
int
netsnmp_enable_loghandler( const char *token )
{
    netsnmp_log_handler *logh;

    logh = netsnmp_find_loghandler( token );
    if (!logh)
        return 0;
    netsnmp_enable_this_loghandler(logh);
    return 1;
}
Beispiel #4
0
void
snmp_enable_calllog(void)	/* XXX - or take a callback routine ??? */
{
    netsnmp_log_handler *logh;
    int                  found = 0;

    for (logh = logh_head; logh; logh = logh->next)
        if (logh->type == NETSNMP_LOGHANDLER_CALLBACK) {
            netsnmp_enable_this_loghandler(logh);
            found         = 1;
	}

    if (!found) {
        logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_CALLBACK,
                                           LOG_DEBUG );
        if (logh)
            logh->token    = strdup("callback");
    }
}
Beispiel #5
0
void
netsnmp_enable_filelog(netsnmp_log_handler *logh, int dont_zero_log)
{
    FILE *logfile;

    if (!logh)
        return;

    if (!logh->magic) {
        logfile = fopen(logh->token, dont_zero_log ? "a" : "w");
        if (!logfile) {
	    snmp_log_perror(logh->token);
            return;
	}
        logh->magic = (void*)logfile;
        netsnmp_set_line_buffering(logfile);
    }
    netsnmp_enable_this_loghandler(logh);
}
netsnmp_log_handler *
netsnmp_register_loghandler( int type, int priority )
{
    netsnmp_log_handler *logh;

    logh = SNMP_MALLOC_TYPEDEF(netsnmp_log_handler);
    if (!logh)
        return NULL;

    DEBUGMSGT(("logging:register", "registering log type %d with pri %d\n",
               type, priority));

    logh->type     = type;
    switch ( type ) {
    case NETSNMP_LOGHANDLER_STDOUT:
        logh->imagic  = 1;
        /* fallthrough */
    case NETSNMP_LOGHANDLER_STDERR:
        logh->handler = log_handler_stdouterr;
        break;

    case NETSNMP_LOGHANDLER_FILE:
        logh->handler = log_handler_file;
        logh->imagic  = 1;
        break;
    case NETSNMP_LOGHANDLER_SYSLOG:
        logh->handler = log_handler_syslog;
        break;
    case NETSNMP_LOGHANDLER_CALLBACK:
        logh->handler = log_handler_callback;
        break;
    case NETSNMP_LOGHANDLER_NONE:
        logh->handler = log_handler_null;
        break;
    default:
        free(logh);
        return NULL;
    }
    logh->priority = priority;
    netsnmp_enable_this_loghandler(logh);
    netsnmp_add_loghandler( logh );
    return logh;
}
Beispiel #7
0
/* used in the perl modules and ip-mib/ipv4InterfaceTable/ipv4InterfaceTable_subagent.c */
void
snmp_enable_stderrlog(void)
{
    netsnmp_log_handler *logh;
    int                  found = 0;

    for (logh = logh_head; logh; logh = logh->next)
        if (logh->type == NETSNMP_LOGHANDLER_STDOUT ||
            logh->type == NETSNMP_LOGHANDLER_STDERR) {
            netsnmp_enable_this_loghandler(logh);
            found         = 1;
        }

    if (!found) {
        logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_STDERR,
                                           LOG_DEBUG );
        if (logh)
            logh->token    = strdup("stderr");
    }
}
Beispiel #8
0
int
handle_nsLoggingTable(netsnmp_mib_handler *handler,
                netsnmp_handler_registration *reginfo,
                netsnmp_agent_request_info *reqinfo,
                netsnmp_request_info *requests)
{
    long temp;
    netsnmp_request_info       *request     = NULL;
    netsnmp_table_request_info *table_info  = NULL;
    netsnmp_log_handler        *logh        = NULL;
    netsnmp_variable_list      *idx         = NULL;

    switch (reqinfo->mode) {

    case MODE_GET:
        for (request=requests; request; request=request->next) {
            if (request->processed != 0)
                continue;
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            table_info  =                netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_TYPE:
                if (!logh) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHINSTANCE);
                    continue;
		}
		temp = logh->type;
	        snmp_set_var_typed_value(request->requestvb, ASN_INTEGER,
                                         (u_char*)&temp,
                                            sizeof(temp));
	        break;

            case NSLOGGING_MAXLEVEL:
                if (!logh) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHINSTANCE);
                    continue;
		}
		temp = logh->pri_max;
	        snmp_set_var_typed_value(request->requestvb, ASN_INTEGER,
                                         (u_char*)&temp,
                                            sizeof(temp));
	        break;

            case NSLOGGING_STATUS:
                if (!logh) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHINSTANCE);
                    continue;
		}
		temp = (logh->type ?
	                   (logh->enabled ?
	                      RS_ACTIVE:
	                      RS_NOTINSERVICE) :
	                    RS_NOTREADY);
	        snmp_set_var_typed_value(request->requestvb, ASN_INTEGER,
                                         (u_char*)&temp, sizeof(temp));
	        break;

            default:
                netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHOBJECT);
                continue;
	    }
	}
	break;


#ifndef NETSNMP_NO_WRITE_SUPPORT
    case MODE_SET_RESERVE1:
        for (request=requests; request; request=request->next) {
            if ( request->status != 0 ) {
                return SNMP_ERR_NOERROR;	/* Already got an error */
            }
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            table_info  =                 netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_TYPE:
                if ( request->requestvb->type != ASN_INTEGER ) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
                    return SNMP_ERR_WRONGTYPE;
                }
                if (*request->requestvb->val.integer < 0 ) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGVALUE);
                    return SNMP_ERR_WRONGVALUE;
                }
		/*
		 * It's OK to create a new logging entry
		 *  (either in one go, or built up using createAndWait)
		 *  but it's not possible to change the type of an entry
		 *  once it's been created.
		 */
                if (logh && logh->type) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_NOTWRITABLE);
                    return SNMP_ERR_NOTWRITABLE;
		}
	        break;

            case NSLOGGING_MAXLEVEL:
                if ( request->requestvb->type != ASN_INTEGER ) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
                    return SNMP_ERR_WRONGTYPE;
                }
                if (*request->requestvb->val.integer < 0 ||
                    *request->requestvb->val.integer > 7 ) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGVALUE);
                    return SNMP_ERR_WRONGVALUE;
                }
	        break;

            case NSLOGGING_STATUS:
                if ( request->requestvb->type != ASN_INTEGER ) {
                    netsnmp_set_request_error(reqinfo, request, SNMP_ERR_WRONGTYPE);
                    return SNMP_ERR_WRONGTYPE;
                }
		switch ( *request->requestvb->val.integer ) {
                case RS_ACTIVE:
                case RS_NOTINSERVICE:
                    /*
		     * Can only work on existing rows
		     */
                    if (!logh) {
                        netsnmp_set_request_error(reqinfo, request,
                                                  SNMP_ERR_INCONSISTENTVALUE);
                        return SNMP_ERR_INCONSISTENTVALUE;
                    }
	            break;

                case RS_CREATEANDWAIT:
                case RS_CREATEANDGO:
                    /*
		     * Can only work with new rows
		     */
                    if (logh) {
                        netsnmp_set_request_error(reqinfo, request,
                                                  SNMP_ERR_INCONSISTENTVALUE);
                        return SNMP_ERR_INCONSISTENTVALUE;
                    }

                    /*
                     *  Normally, we'd create the row at a later stage
                     *   (probably during the RESERVE2 or ACTION passes)
                     *
                     *  But we need to check that the values are
                     *   consistent during the ACTION pass (which is the
                     *   latest that an error can be safely handled),
                     *   so the values all need to be set up before this
                     *      (i.e. during the RESERVE2 pass)
                     *  So the new row needs to be created before that
                     *   in order to have somewhere to put them.
                     *
                     *  That's why we're doing this here.
                     */
                    idx = table_info->indexes;
	            logh = netsnmp_register_loghandler(
				    /* not really, but we need a valid type */
				    NETSNMP_LOGHANDLER_STDOUT,
				    *idx->val.integer);
                    if (!logh) {
                        netsnmp_set_request_error(reqinfo, request,
                                                  SNMP_ERR_GENERR); /* ??? */
                        return SNMP_ERR_GENERR;
                    }
                    idx = idx->next_variable;
	            logh->type  = 0;
	            logh->token = strdup((char *) idx->val.string);
                    netsnmp_insert_iterator_context(request, (void*)logh);
	            break;

                case RS_DESTROY:
                    /*
		     * Can work with new or existing rows
		     */
                    break;

                case RS_NOTREADY:
		default:
                    netsnmp_set_request_error(reqinfo, request,
                                              SNMP_ERR_WRONGVALUE);
                    return SNMP_ERR_WRONGVALUE;
                }
                break;

            default:
                netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHOBJECT);
                return SNMP_NOSUCHOBJECT;
	    }
	}
	break;


    case MODE_SET_RESERVE2:
        for (request=requests; request; request=request->next) {
            if ( request->status != 0 ) {
                return SNMP_ERR_NOERROR;	/* Already got an error */
            }
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            table_info  =                 netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_TYPE:
                /*
		 * If we're creating a row using createAndGo,
		 * we need to set the type early, so that we
		 * can validate it in the ACTION pass.
		 *
		 * Remember that we need to be able to reverse this
		 */
                if ( logh )
                    logh->type = *request->requestvb->val.integer;
	        break;
            /*
	     * Don't need to handle nsLogToken or nsLogStatus in this pass
	     */
	    }
	}
	break;

    case MODE_SET_ACTION:
        for (request=requests; request; request=request->next) {
            if (request->processed != 0)
                continue;
            if ( request->status != 0 ) {
                return SNMP_ERR_NOERROR;	/* Already got an error */
            }
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            table_info  =                 netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_STATUS:
                /*
		 * This is where we can check the internal consistency
		 * of the request.  Basically, for a row to be marked
		 * 'active', then there needs to be a valid type value.
		 */
		switch ( *request->requestvb->val.integer ) {
                case RS_ACTIVE:
                case RS_CREATEANDGO:
                    if ( !logh || !logh->type ) {
                        netsnmp_set_request_error(reqinfo, request,
                                                  SNMP_ERR_INCONSISTENTVALUE);
                        return SNMP_ERR_INCONSISTENTVALUE;
		    }
	            break;
		}
	        break;
            /*
	     * Don't need to handle nsLogToken or nsLogType in this pass
	     */
	    }
	}
	break;

    case MODE_SET_FREE:
    case MODE_SET_UNDO:
        /*
         * If any resources were allocated in either of the
         *  two RESERVE passes, they need to be released here,
         *  and any assignments (in RESERVE2) reversed.
         *
         * Nothing additional will have been done during ACTION
         *  so this same code can do for UNDO as well.
         */
        for (request=requests; request; request=request->next) {
            if (request->processed != 0)
                continue;
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            table_info  =                 netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_TYPE:
                /*
		 * If we've been setting the type, and the request
		 * has failed, then revert to an unset type.
		 *
		 * We need to be careful here - if the reason it failed is
		 *  that the type was already set, then we shouldn't "undo"
		 *  the assignment (since it won't actually have been made).
		 *
		 * Check the current value against the 'new' one.  If they're
		 * the same, then this is probably a successful assignment,
		 * and the failure was elsewhere, so we need to undo it.
		 *  (Or else there was an attempt to write the same value!)
		 */
                if ( logh && logh->type == *request->requestvb->val.integer )
                    logh->type = 0;
	        break;

            case NSLOGGING_STATUS:
                temp = *request->requestvb->val.integer;
                if ( logh && ( temp == RS_CREATEANDGO ||
                               temp == RS_CREATEANDWAIT)) {
		    netsnmp_remove_loghandler( logh );
		}
	        break;
            /*
	     * Don't need to handle nsLogToken in this pass
	     */
	    }
	}
	break;


    case MODE_SET_COMMIT:
        for (request=requests; request; request=request->next) {
            if (request->processed != 0)
                continue;
            if ( request->status != 0 ) {
                return SNMP_ERR_NOERROR;	/* Already got an error */
            }
            logh = (netsnmp_log_handler*)netsnmp_extract_iterator_context(request);
            if (!logh) {
                netsnmp_set_request_error(reqinfo, request, SNMP_ERR_COMMITFAILED);
                return SNMP_ERR_COMMITFAILED;	/* Shouldn't happen! */
            }
            table_info  =                 netsnmp_extract_table_info(request);

            switch (table_info->colnum) {
            case NSLOGGING_MAXLEVEL:
                logh->pri_max = *request->requestvb->val.integer;
	        break;

            case NSLOGGING_STATUS:
                switch (*request->requestvb->val.integer) {
                    case RS_ACTIVE:
                    case RS_CREATEANDGO:
                        netsnmp_enable_this_loghandler(logh);
                        break;
                    case RS_NOTINSERVICE:
                    case RS_CREATEANDWAIT:
                        netsnmp_disable_this_loghandler(logh);
                        break;
		    case RS_DESTROY:
		        netsnmp_remove_loghandler( logh );
                        break;
		}
	        break;
	    }
	}
	break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
    }

    return SNMP_ERR_NOERROR;
}