1 /*
2  * ProFTPD - mod_snmp packet routines
3  * Copyright (c) 2008-2016 TJ Saunders
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
18  *
19  * As a special exemption, TJ Saunders and other respective copyright holders
20  * give permission to link this program with OpenSSL, and distribute the
21  * resulting executable, without including the source code for OpenSSL in the
22  * source distribution.
23  */
24 
25 #ifndef MOD_SNMP_PACKET_H
26 #define MOD_SNMP_PACKET_H
27 
28 #include "mod_snmp.h"
29 #include "pdu.h"
30 
31 /* SNMP packets shouldn't be larger than 4K, right? */
32 #define SNMP_PACKET_MAX_LEN		4096
33 
34 struct snmp_packet {
35   pool *pool;
36 
37   const pr_netaddr_t *remote_addr;
38   const pr_class_t *remote_class;
39 
40   /* Request packet data */
41   unsigned char *req_data;
42   size_t req_datalen;
43 
44   /* SNMP protocol version */
45   long snmp_version;
46 
47   /* Community string for outgoing packets */
48   char *community;
49   unsigned int community_len;
50 
51   struct snmp_pdu *req_pdu;
52 
53   /* Response packet data */
54   unsigned char *resp_data;
55   size_t resp_datalen;
56 
57   struct snmp_pdu *resp_pdu;
58 };
59 
60 struct snmp_packet *snmp_packet_create(pool *p);
61 int snmp_packet_write(pool *p, int sockfd, struct snmp_packet *pkt);
62 
63 #endif /* MOD_SNMP_PACKET_H */
64