usr/src/cmd/agents/snmp/agent/pagent.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  *
  22  * Copyright 1996 Sun Microsystems, Inc.  All Rights Reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <sys/types.h>
  31 #include <sys/socket.h>
  32 #include <netinet/in.h>
  33 #include <arpa/inet.h>
  34
  35 #include "impl.h"
  36 #include "error.h"
  37 #include "trace.h"
  38 #include "pdu.h"
  39
  40 #include "pagent.h"
  41 #include "subtree.h"
  42
  43
  44 /***** STATIC VARIABLES *****/
  45
  46 /* the agent list */
  47 Agent *first_agent = NULL;
  48
  49
  50 /***** STATIC FUNCTIONS *****/
  51
  52 static void agent_free(Agent *ap);
  53
  54
  55 /****************************************************************/
  56
  57 void trace_agents()
  58 {
  59         Agent *ap;
  60
  61
  62         trace("AGENTS:\n");
  63         for(ap = first_agent; ap; ap = ap->next_agent)
  64         {
  65                 trace("\t%-30s %-30s %8d\n",
  66                         ap->name,
  67                         address_string(&(ap->address)),
  68                         ap->timeout);
  69         }
  70         trace("\n");
  71 }
  72
  73
  74 /****************************************************************/
  75
  76 /* We must invoke subtree_list_delete() before invoking */
  77 /* this function because the first_agent_subtree member */
  78 /* of the agent structures should be NULL               */
  79
  80 void agent_list_delete()
  81 {
  82         Agent *ap = first_agent;
  83         Agent *next;
  84
  85
  86         while(ap)
  87         {
  88                 next = ap->next_agent;
  89
  90                 agent_free(ap);
  91
  92                 ap = next;
  93         }
  94
  95         first_agent = NULL;
  96
  97         return;
  98 }
  99
 100
 101 /****************************************************************/
 102
 103 /* The fisrt_agent_subtree member of the agent          */
 104 /* structure should be NULL                             */
 105
 106 static void agent_free(Agent *ap)
 107 {
 108         if(ap == NULL)
 109         {
 110                 return;
 111         }
 112
 113         if(ap->first_agent_subtree)
 114         {
 115                 error("BUG: agent_free(): first_agent_subtree not NULL");
 116         }
 117
 118         free(ap->name);
 119         free(ap);
 120
 121         return;
 122 }
 123
 124 /****************************************************************/
 125
 126 /* agent_find() is used to check if we have not         */
 127 /* two SNMP agents registered on the same UDP port      */
 128
 129 Agent *agent_find(Address *address)
 130 {
 131         Agent *ap;
 132
 133
 134         for(ap = first_agent; ap; ap = ap->next_agent)
 135         {
 136                 if(ap->address.sin_port == address->sin_port)
 137                 {
 138                         return ap;
 139                 }
 140         }
 141
 142         return NULL;
 143 }
 144
 145
 146 /****************************************************************/
 147