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/* $OpenBSD: agentx.c,v 1.14 2017/05/28 10:39:15 benno Exp $ */ |
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/* |
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* Copyright (c) 2013,2014 Bret Stephen Lambert <blambert@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/queue.h> |
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#include <sys/un.h> |
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#include <errno.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "snmp.h" |
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int snmp_agentx_octetstring(struct agentx_pdu *, char *, int); |
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int snmp_agentx_buffercheck(struct agentx_pdu *, size_t); |
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int snmp_agentx_oid(struct agentx_pdu *, struct snmp_oid *); |
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int snmp_agentx_buffer_consume(struct agentx_pdu *, u_int); |
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int snmp_agentx_int(struct agentx_pdu *, uint32_t *); |
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int snmp_agentx_int64(struct agentx_pdu *, uint64_t *); |
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int snmp_agentx_do_read_raw(struct agentx_pdu *, void *, int, int); |
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void snmp_agentx_update_ids(struct agentx_handle *, struct agentx_pdu *); |
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struct agentx_pdu * |
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agentx_find_inflight(struct agentx_handle *, uint32_t, uint32_t); |
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int snmp_agentx_do_read_oid(struct agentx_pdu *, struct snmp_oid *, int *); |
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#ifdef DEBUG |
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static void snmp_agentx_dump_hdr(struct agentx_hdr *); |
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#endif |
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#define PDU_BUFLEN 256 |
48 |
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/* snmpTrapOid.0 */ |
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struct snmp_oid trapoid_0 = { |
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.o_id = { 1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0 }, |
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.o_n = 11 |
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}; |
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/* |
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* AgentX handle allocation and management routines. |
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*/ |
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struct agentx_handle * |
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snmp_agentx_alloc(int s) |
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{ |
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struct agentx_handle *h; |
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if ((h = calloc(1, sizeof(*h))) == NULL) |
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return (NULL); |
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h->fd = s; |
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h->timeout = AGENTX_DEFAULT_TIMEOUT; |
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TAILQ_INIT(&h->w); |
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TAILQ_INIT(&h->inflight); |
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return (h); |
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} |
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/* |
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* Synchronous open of unix socket path. |
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*/ |
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struct agentx_handle * |
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snmp_agentx_open(const char *path, char *descr, struct snmp_oid *oid) |
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{ |
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struct sockaddr_un sun; |
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struct agentx_handle *h; |
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int s; |
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if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) |
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return (NULL); |
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bzero(&sun, sizeof(sun)); |
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sun.sun_family = AF_UNIX; |
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if (strlcpy(sun.sun_path, path, sizeof(sun.sun_path)) >= |
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sizeof(sun.sun_path)) |
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goto fail; |
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if (connect(s, (struct sockaddr *)&sun, sizeof(sun)) == -1) |
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goto fail; |
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if ((h = snmp_agentx_fdopen(s, descr, oid)) == NULL) |
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goto fail; |
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return (h); |
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fail: |
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close(s); |
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return (NULL); |
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} |
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/* |
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* Synchronous AgentX open operation over previously-opened socket. |
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*/ |
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struct agentx_handle * |
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snmp_agentx_fdopen(int s, char *descr, struct snmp_oid *oid) |
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{ |
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struct agentx_handle *h; |
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struct agentx_pdu *pdu = NULL; |
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if ((h = snmp_agentx_alloc(s)) == NULL) |
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return (NULL); |
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if ((pdu = snmp_agentx_open_pdu(h, descr, oid)) == NULL || |
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(pdu = snmp_agentx_request(h, pdu)) == NULL || |
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snmp_agentx_open_response(h, pdu) == -1) { |
122 |
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if (pdu) |
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snmp_agentx_pdu_free(pdu); |
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snmp_agentx_free(h); |
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return (NULL); |
126 |
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} |
127 |
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128 |
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return (h); |
129 |
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} |
130 |
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131 |
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/* |
132 |
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* Synchronous close of agentx handle. |
133 |
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*/ |
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int |
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snmp_agentx_close(struct agentx_handle *h, uint8_t reason) |
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{ |
137 |
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struct agentx_pdu *pdu; |
138 |
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int error = 0; |
139 |
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140 |
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if ((pdu = snmp_agentx_close_pdu(h, reason)) == NULL) |
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return (-1); |
142 |
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if ((pdu = snmp_agentx_request(h, pdu)) == NULL) |
143 |
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return (-1); |
144 |
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if (snmp_agentx_response(h, pdu) == -1) |
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error = -1; |
146 |
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147 |
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snmp_agentx_pdu_free(pdu); |
148 |
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149 |
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return (error); |
150 |
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} |
151 |
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152 |
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void |
153 |
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snmp_agentx_free(struct agentx_handle *h) |
154 |
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{ |
155 |
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struct agentx_pdu *pdu; |
156 |
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157 |
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if (h->fd != -1) |
158 |
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close(h->fd); |
159 |
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160 |
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while ((pdu = TAILQ_FIRST(&h->w))) { |
161 |
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TAILQ_REMOVE(&h->w, pdu, entry); |
162 |
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snmp_agentx_pdu_free(pdu); |
163 |
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} |
164 |
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while ((pdu = TAILQ_FIRST(&h->inflight))) { |
165 |
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TAILQ_REMOVE(&h->w, pdu, entry); |
166 |
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snmp_agentx_pdu_free(pdu); |
167 |
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} |
168 |
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if (h->r) |
169 |
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snmp_agentx_pdu_free(h->r); |
170 |
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171 |
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free(h); |
172 |
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} |
173 |
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174 |
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/* |
175 |
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* AgentX pdu allocation routines. |
176 |
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*/ |
177 |
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178 |
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/* |
179 |
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* Allocate an AgentX PDU. |
180 |
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*/ |
181 |
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struct agentx_pdu * |
182 |
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snmp_agentx_pdu_alloc(void) |
183 |
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{ |
184 |
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struct agentx_pdu *pdu; |
185 |
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186 |
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if ((pdu = calloc(1, sizeof(*pdu))) == NULL) |
187 |
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return (NULL); |
188 |
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if ((pdu->buffer = calloc(PDU_BUFLEN, sizeof(uint8_t))) == NULL) { |
189 |
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free(pdu); |
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return (NULL); |
191 |
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} |
192 |
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193 |
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pdu->buflen = PDU_BUFLEN; |
194 |
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195 |
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bzero(pdu->buffer, pdu->buflen); |
196 |
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pdu->ptr = pdu->buffer + sizeof(struct agentx_hdr); |
197 |
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pdu->ioptr = pdu->buffer; |
198 |
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pdu->hdr = (struct agentx_hdr *)pdu->buffer; |
199 |
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pdu->hdr->version = AGENTX_VERSION; |
200 |
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pdu->hdr->flags = AGENTX_LOCAL_BYTE_ORDER_FLAG; |
201 |
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pdu->hdr->reserved = 0; |
202 |
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pdu->hdr->length = 0; |
203 |
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pdu->datalen = sizeof(struct agentx_hdr); |
204 |
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205 |
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return (pdu); |
206 |
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} |
207 |
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208 |
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/* |
209 |
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* Read the response PDU for a generic operation. |
210 |
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*/ |
211 |
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int |
212 |
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snmp_agentx_response(struct agentx_handle *h, struct agentx_pdu *pdu) |
213 |
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{ |
214 |
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struct agentx_response_data resp; |
215 |
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216 |
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if (snmp_agentx_read_raw(pdu, &resp, sizeof(resp)) == -1) |
217 |
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return (-1); |
218 |
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219 |
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if (!snmp_agentx_byteorder_native(pdu->hdr)) { |
220 |
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resp.error = snmp_agentx_int16_byteswap(resp.error); |
221 |
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resp.index = snmp_agentx_int16_byteswap(resp.index); |
222 |
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} |
223 |
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224 |
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h->error = resp.error; |
225 |
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if (resp.error != AGENTX_ERR_NONE) |
226 |
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return (-1); |
227 |
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228 |
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return (0); |
229 |
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} |
230 |
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231 |
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/* |
232 |
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* Read the response PDU for an open operation. |
233 |
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*/ |
234 |
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int |
235 |
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snmp_agentx_open_response(struct agentx_handle *h, struct agentx_pdu *pdu) |
236 |
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{ |
237 |
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238 |
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if (snmp_agentx_response(h, pdu) == -1) |
239 |
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return (-1); |
240 |
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241 |
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h->sessionid = pdu->hdr->sessionid; |
242 |
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return (0); |
243 |
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} |
244 |
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245 |
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void |
246 |
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snmp_agentx_pdu_free(struct agentx_pdu *pdu) |
247 |
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{ |
248 |
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free(pdu->buffer); |
249 |
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free(pdu->request); |
250 |
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free(pdu); |
251 |
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} |
252 |
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253 |
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int |
254 |
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snmp_agentx_buffer_consume(struct agentx_pdu *b, u_int len) |
255 |
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{ |
256 |
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int padding; |
257 |
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258 |
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padding = ((len + 3) & ~0x03) - len; |
259 |
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260 |
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if (b->datalen < (len + padding)) |
261 |
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return (-1); |
262 |
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263 |
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b->datalen -= len + padding; |
264 |
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b->ptr += len + padding; |
265 |
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266 |
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return (0); |
267 |
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} |
268 |
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|
269 |
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/* |
270 |
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* Send an AgentX PDU. Flushes any already-enqueued PDUs. |
271 |
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*/ |
272 |
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int |
273 |
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snmp_agentx_send(struct agentx_handle *h, struct agentx_pdu *pdu) |
274 |
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{ |
275 |
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ssize_t n; |
276 |
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|
277 |
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/* set the appropriate IDs in the protocol header */ |
278 |
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if (pdu != NULL && |
279 |
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(pdu->datalen == pdu->hdr->length + sizeof(struct agentx_hdr))) { |
280 |
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pdu->hdr->sessionid = h->sessionid; |
281 |
|
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|
282 |
|
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if (pdu->hdr->type != AGENTX_RESPONSE) { |
283 |
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++h->transactid; |
284 |
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++h->packetid; |
285 |
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} |
286 |
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|
287 |
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pdu->hdr->transactid = h->transactid; |
288 |
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pdu->hdr->packetid = h->packetid; |
289 |
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TAILQ_INSERT_TAIL(&h->w, pdu, entry); |
290 |
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} |
291 |
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|
292 |
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again: |
293 |
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if ((pdu = TAILQ_FIRST(&h->w)) == NULL) |
294 |
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return (0); |
295 |
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|
296 |
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if ((n = send(h->fd, pdu->ioptr, pdu->datalen, 0)) == -1) |
297 |
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return (-1); |
298 |
|
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|
299 |
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pdu->ioptr += n; |
300 |
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pdu->datalen -= n; |
301 |
|
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|
302 |
|
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if (pdu->datalen > 0) { |
303 |
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errno = EAGAIN; |
304 |
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return (-1); |
305 |
|
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} |
306 |
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|
307 |
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#ifdef DEBUG |
308 |
|
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snmp_agentx_dump_hdr(pdu->hdr); |
309 |
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#endif |
310 |
|
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|
311 |
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TAILQ_REMOVE(&h->w, pdu, entry); |
312 |
|
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TAILQ_INSERT_TAIL(&h->inflight, pdu, entry); |
313 |
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|
314 |
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goto again; |
315 |
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} |
316 |
|
|
|
317 |
|
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/* |
318 |
|
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* Attempt to read a single AgentX PDU. |
319 |
|
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*/ |
320 |
|
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struct agentx_pdu * |
321 |
|
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snmp_agentx_recv(struct agentx_handle *h) |
322 |
|
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{ |
323 |
|
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struct agentx_pdu *pdu, *match; |
324 |
|
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ssize_t n; |
325 |
|
|
|
326 |
|
|
h->error = AGENTX_ERR_NONE; |
327 |
|
|
|
328 |
|
|
if (h->r == NULL) { |
329 |
|
|
if ((h->r = snmp_agentx_pdu_alloc()) == NULL) |
330 |
|
|
return (NULL); |
331 |
|
|
h->r->datalen = 0; /* XXX force this for receive buffers */ |
332 |
|
|
} |
333 |
|
|
pdu = h->r; |
334 |
|
|
|
335 |
|
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if (snmp_agentx_buffercheck(pdu, sizeof(struct agentx_hdr)) == -1) |
336 |
|
|
return (NULL); |
337 |
|
|
|
338 |
|
|
/* read header */ |
339 |
|
|
if (pdu->datalen < sizeof(struct agentx_hdr)) { |
340 |
|
|
n = recv(h->fd, pdu->ioptr, sizeof(struct agentx_hdr), 0); |
341 |
|
|
|
342 |
|
|
if (n == 0 || n == -1) |
343 |
|
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return (NULL); |
344 |
|
|
|
345 |
|
|
pdu->datalen += n; |
346 |
|
|
pdu->ioptr += n; |
347 |
|
|
|
348 |
|
|
if (pdu->datalen < sizeof(struct agentx_hdr)) { |
349 |
|
|
errno = EAGAIN; |
350 |
|
|
return (NULL); |
351 |
|
|
} |
352 |
|
|
|
353 |
|
|
if (pdu->hdr->version != AGENTX_VERSION) { |
354 |
|
|
h->error = AGENTX_ERR_PARSE_ERROR; |
355 |
|
|
return (NULL); |
356 |
|
|
} |
357 |
|
|
|
358 |
|
|
if (snmp_agentx_buffercheck(pdu, pdu->hdr->length) == -1) |
359 |
|
|
return (NULL); |
360 |
|
|
} |
361 |
|
|
|
362 |
|
|
/* read body */ |
363 |
|
|
if (pdu->hdr->length > 0) { |
364 |
|
|
n = recv(h->fd, pdu->ioptr, pdu->hdr->length, 0); |
365 |
|
|
|
366 |
|
|
if (n == 0 || n == -1) |
367 |
|
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return (NULL); |
368 |
|
|
|
369 |
|
|
pdu->datalen += n; |
370 |
|
|
pdu->ioptr += n; |
371 |
|
|
} |
372 |
|
|
|
373 |
|
|
if (pdu->datalen < pdu->hdr->length + sizeof(struct agentx_hdr)) { |
374 |
|
|
errno = EAGAIN; |
375 |
|
|
return (NULL); |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
if (pdu->hdr->version != AGENTX_VERSION) { |
379 |
|
|
h->error = AGENTX_ERR_PARSE_ERROR; |
380 |
|
|
goto fail; |
381 |
|
|
} |
382 |
|
|
|
383 |
|
|
/* If this is an open on a new connection, fix it up */ |
384 |
|
|
if (pdu->hdr->type == AGENTX_OPEN && h->sessionid == 0) { |
385 |
|
|
pdu->hdr->sessionid = 0; /* ignored, per RFC */ |
386 |
|
|
h->transactid = pdu->hdr->transactid; |
387 |
|
|
h->packetid = pdu->hdr->packetid; |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
if (pdu->hdr->type == AGENTX_RESPONSE) { |
391 |
|
|
|
392 |
|
|
match = agentx_find_inflight(h, pdu->hdr->transactid, |
393 |
|
|
pdu->hdr->packetid); |
394 |
|
|
if (match == NULL) { |
395 |
|
|
errno = ESRCH; /* XXX */ |
396 |
|
|
goto fail; |
397 |
|
|
} |
398 |
|
|
|
399 |
|
|
TAILQ_REMOVE(&h->inflight, match, entry); |
400 |
|
|
pdu->request = match; |
401 |
|
|
h->r = NULL; |
402 |
|
|
|
403 |
|
|
} else { |
404 |
|
|
if (pdu->hdr->sessionid != h->sessionid) { |
405 |
|
|
h->error = AGENTX_ERR_NOT_OPEN; |
406 |
|
|
goto fail; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
|
if (pdu->hdr->flags & AGENTX_NON_DEFAULT_CONTEXT) { |
410 |
|
|
h->error = AGENTX_ERR_UNSUPPORTED_CONTEXT; |
411 |
|
|
goto fail; |
412 |
|
|
} |
413 |
|
|
|
414 |
|
|
snmp_agentx_update_ids(h, pdu); /* XXX */ |
415 |
|
|
|
416 |
|
|
if (pdu->datalen != pdu->hdr->length + sizeof(*pdu->hdr)) { |
417 |
|
|
h->error = AGENTX_ERR_PARSE_ERROR; |
418 |
|
|
goto fail; |
419 |
|
|
} |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
#ifdef DEBUG |
423 |
|
|
snmp_agentx_dump_hdr(pdu->hdr); |
424 |
|
|
#endif |
425 |
|
|
h->r = NULL; |
426 |
|
|
|
427 |
|
|
return (pdu); |
428 |
|
|
|
429 |
|
|
fail: |
430 |
|
|
#ifdef DEBUG |
431 |
|
|
snmp_agentx_dump_hdr(pdu->hdr); |
432 |
|
|
#endif |
433 |
|
|
snmp_agentx_pdu_free(pdu); |
434 |
|
|
h->r = NULL; |
435 |
|
|
|
436 |
|
|
return (NULL); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
/* |
440 |
|
|
* Synchonous request and receipt of response. |
441 |
|
|
*/ |
442 |
|
|
struct agentx_pdu * |
443 |
|
|
snmp_agentx_request(struct agentx_handle *h, struct agentx_pdu *pdu) |
444 |
|
|
{ |
445 |
|
|
|
446 |
|
|
if (snmp_agentx_send(h, pdu) == -1) { |
447 |
|
|
if (errno != EAGAIN) |
448 |
|
|
return (NULL); |
449 |
|
|
} |
450 |
|
|
while (snmp_agentx_send(h, NULL) == -1) { |
451 |
|
|
if (errno != EAGAIN) |
452 |
|
|
return (NULL); |
453 |
|
|
} |
454 |
|
|
while ((pdu = snmp_agentx_recv(h)) == NULL) { |
455 |
|
|
if (errno != EAGAIN) |
456 |
|
|
return (NULL); |
457 |
|
|
} |
458 |
|
|
h->error = AGENTX_ERR_NONE; |
459 |
|
|
|
460 |
|
|
return (pdu); |
461 |
|
|
} |
462 |
|
|
|
463 |
|
|
struct agentx_pdu * |
464 |
|
|
agentx_find_inflight(struct agentx_handle *h, uint32_t tid, uint32_t pid) |
465 |
|
|
{ |
466 |
|
|
struct agentx_pdu *pdu; |
467 |
|
|
|
468 |
|
|
TAILQ_FOREACH(pdu, &h->inflight, entry) |
469 |
|
|
if (pdu->hdr->transactid == tid && pdu->hdr->packetid == pid) |
470 |
|
|
break; |
471 |
|
|
return (pdu); |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
int |
475 |
|
|
snmp_agentx_buffercheck(struct agentx_pdu *pdu, size_t len) |
476 |
|
|
{ |
477 |
|
|
uint8_t *newptr; |
478 |
|
|
size_t newlen; |
479 |
|
|
|
480 |
|
|
if (pdu->buflen - pdu->datalen >= len) |
481 |
|
|
return (0); |
482 |
|
|
|
483 |
|
|
newlen = pdu->buflen + len; |
484 |
|
|
if (newlen < pdu->buflen || newlen < len) |
485 |
|
|
return (-1); |
486 |
|
|
|
487 |
|
|
if ((newptr = realloc(pdu->buffer, newlen)) == NULL) |
488 |
|
|
return (-1); |
489 |
|
|
|
490 |
|
|
pdu->buflen = newlen; |
491 |
|
|
pdu->ioptr = &newptr[pdu->ioptr - pdu->buffer]; |
492 |
|
|
pdu->buffer = newptr; |
493 |
|
|
pdu->hdr = (struct agentx_hdr *)pdu->buffer; |
494 |
|
|
pdu->ptr = &pdu->buffer[pdu->datalen]; |
495 |
|
|
|
496 |
|
|
return (0); |
497 |
|
|
} |
498 |
|
|
|
499 |
|
|
/* |
500 |
|
|
* Utility routines for initializing common AgentX PDUs. |
501 |
|
|
*/ |
502 |
|
|
|
503 |
|
|
struct agentx_pdu * |
504 |
|
|
snmp_agentx_open_pdu(struct agentx_handle *h, char *descr, |
505 |
|
|
struct snmp_oid *oid) |
506 |
|
|
{ |
507 |
|
|
struct agentx_open_timeout to; |
508 |
|
|
struct snmp_oid nulloid; |
509 |
|
|
struct agentx_pdu *pdu; |
510 |
|
|
|
511 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
512 |
|
|
return (NULL); |
513 |
|
|
|
514 |
|
|
pdu->hdr->type = AGENTX_OPEN; |
515 |
|
|
|
516 |
|
|
if (oid == NULL) { |
517 |
|
|
bzero(&nulloid, sizeof(nulloid)); |
518 |
|
|
oid = &nulloid; |
519 |
|
|
} |
520 |
|
|
|
521 |
|
|
bzero(&to, sizeof(to)); |
522 |
|
|
to.timeout = AGENTX_DEFAULT_TIMEOUT; |
523 |
|
|
|
524 |
|
|
if (snmp_agentx_raw(pdu, &to, sizeof(to)) == -1 || |
525 |
|
|
snmp_agentx_oid(pdu, oid) == -1 || |
526 |
|
|
snmp_agentx_octetstring(pdu, descr, strlen(descr)) == -1) |
527 |
|
|
goto fail; |
528 |
|
|
|
529 |
|
|
return (pdu); |
530 |
|
|
fail: |
531 |
|
|
snmp_agentx_pdu_free(pdu); |
532 |
|
|
return (NULL); |
533 |
|
|
} |
534 |
|
|
|
535 |
|
|
struct agentx_pdu * |
536 |
|
|
snmp_agentx_close_pdu(struct agentx_handle *h, uint8_t reason) |
537 |
|
|
{ |
538 |
|
|
struct agentx_close_request_data req; |
539 |
|
|
struct agentx_pdu *pdu; |
540 |
|
|
|
541 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
542 |
|
|
return (NULL); |
543 |
|
|
pdu->hdr->type = AGENTX_CLOSE; |
544 |
|
|
|
545 |
|
|
bzero(&req, sizeof(req)); |
546 |
|
|
req.reason = reason; |
547 |
|
|
|
548 |
|
|
if (snmp_agentx_raw(pdu, &req, sizeof(req)) == -1) { |
549 |
|
|
snmp_agentx_pdu_free(pdu); |
550 |
|
|
return (NULL); |
551 |
|
|
} |
552 |
|
|
|
553 |
|
|
return (pdu); |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
struct agentx_pdu * |
557 |
|
|
snmp_agentx_notify_pdu(struct snmp_oid *oid) |
558 |
|
|
{ |
559 |
|
|
struct agentx_pdu *pdu; |
560 |
|
|
|
561 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
562 |
|
|
return (NULL); |
563 |
|
|
pdu->hdr->type = AGENTX_NOTIFY; |
564 |
|
|
|
565 |
|
|
if (snmp_agentx_varbind(pdu, &trapoid_0, |
566 |
|
|
AGENTX_OBJECT_IDENTIFIER, oid, sizeof(*oid)) == -1) { |
567 |
|
|
snmp_agentx_pdu_free(pdu); |
568 |
|
|
return (NULL); |
569 |
|
|
} |
570 |
|
|
|
571 |
|
|
return (pdu); |
572 |
|
|
} |
573 |
|
|
|
574 |
|
|
struct agentx_pdu * |
575 |
|
|
snmp_agentx_response_pdu(int uptime, int error, int idx) |
576 |
|
|
{ |
577 |
|
|
struct agentx_response_data resp; |
578 |
|
|
struct agentx_pdu *pdu; |
579 |
|
|
|
580 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
581 |
|
|
return (NULL); |
582 |
|
|
pdu->hdr->type = AGENTX_RESPONSE; |
583 |
|
|
|
584 |
|
|
resp.sysuptime = uptime; |
585 |
|
|
resp.error = error; |
586 |
|
|
resp.index = idx; |
587 |
|
|
|
588 |
|
|
if (snmp_agentx_raw(pdu, &resp, sizeof(resp)) == -1) { |
589 |
|
|
snmp_agentx_pdu_free(pdu); |
590 |
|
|
return (NULL); |
591 |
|
|
} |
592 |
|
|
|
593 |
|
|
return (pdu); |
594 |
|
|
} |
595 |
|
|
|
596 |
|
|
struct agentx_pdu * |
597 |
|
|
snmp_agentx_ping_pdu(void) |
598 |
|
|
{ |
599 |
|
|
struct agentx_pdu *pdu; |
600 |
|
|
|
601 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
602 |
|
|
return (NULL); |
603 |
|
|
pdu->hdr->version = AGENTX_VERSION; |
604 |
|
|
pdu->hdr->type = AGENTX_PING; |
605 |
|
|
|
606 |
|
|
return (pdu); |
607 |
|
|
} |
608 |
|
|
|
609 |
|
|
struct agentx_pdu * |
610 |
|
|
snmp_agentx_register_pdu(struct snmp_oid *oid, int timeout, int range_index, |
611 |
|
|
int range_bound) |
612 |
|
|
{ |
613 |
|
|
struct agentx_register_hdr rhdr; |
614 |
|
|
struct agentx_pdu *pdu; |
615 |
|
|
|
616 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
617 |
|
|
return (NULL); |
618 |
|
|
|
619 |
|
|
pdu->hdr->version = AGENTX_VERSION; |
620 |
|
|
pdu->hdr->type = AGENTX_REGISTER; |
621 |
|
|
|
622 |
|
|
rhdr.timeout = timeout; |
623 |
|
|
rhdr.priority = AGENTX_REGISTER_PRIO_DEFAULT; |
624 |
|
|
rhdr.subrange = range_index; |
625 |
|
|
rhdr.reserved = 0; |
626 |
|
|
|
627 |
|
|
if (snmp_agentx_raw(pdu, &rhdr, sizeof(rhdr)) == -1 || |
628 |
|
|
snmp_agentx_oid(pdu, oid) == -1 || |
629 |
|
|
(range_index && snmp_agentx_int(pdu, &range_bound) == -1)) { |
630 |
|
|
snmp_agentx_pdu_free(pdu); |
631 |
|
|
return (NULL); |
632 |
|
|
} |
633 |
|
|
|
634 |
|
|
return (pdu); |
635 |
|
|
} |
636 |
|
|
|
637 |
|
|
struct agentx_pdu * |
638 |
|
|
snmp_agentx_unregister_pdu(struct snmp_oid *oid, int range_index, |
639 |
|
|
int range_bound) |
640 |
|
|
{ |
641 |
|
|
struct agentx_unregister_hdr uhdr; |
642 |
|
|
struct agentx_pdu *pdu; |
643 |
|
|
|
644 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
645 |
|
|
return (NULL); |
646 |
|
|
|
647 |
|
|
pdu->hdr->version = AGENTX_VERSION; |
648 |
|
|
pdu->hdr->type = AGENTX_UNREGISTER; |
649 |
|
|
|
650 |
|
|
uhdr.reserved1 = 0; |
651 |
|
|
uhdr.priority = AGENTX_REGISTER_PRIO_DEFAULT; |
652 |
|
|
uhdr.subrange = range_index; |
653 |
|
|
uhdr.reserved2 = 0; |
654 |
|
|
|
655 |
|
|
if (snmp_agentx_raw(pdu, &uhdr, sizeof(uhdr)) == -1 || |
656 |
|
|
snmp_agentx_oid(pdu, oid) == -1 || |
657 |
|
|
snmp_agentx_oid(pdu, oid) == -1 || |
658 |
|
|
(range_index && snmp_agentx_int(pdu, &range_bound) == -1)) { |
659 |
|
|
snmp_agentx_pdu_free(pdu); |
660 |
|
|
return (NULL); |
661 |
|
|
} |
662 |
|
|
|
663 |
|
|
return (pdu); |
664 |
|
|
} |
665 |
|
|
|
666 |
|
|
struct agentx_pdu * |
667 |
|
|
snmp_agentx_get_pdu(struct snmp_oid oid[], int noid) |
668 |
|
|
{ |
669 |
|
|
struct snmp_oid nulloid; |
670 |
|
|
struct agentx_pdu *pdu; |
671 |
|
|
int i; |
672 |
|
|
|
673 |
|
|
if ((pdu = snmp_agentx_pdu_alloc()) == NULL) |
674 |
|
|
return (NULL); |
675 |
|
|
|
676 |
|
|
pdu->hdr->version = AGENTX_VERSION; |
677 |
|
|
pdu->hdr->type = AGENTX_GET; |
678 |
|
|
|
679 |
|
|
bzero(&nulloid, sizeof(nulloid)); |
680 |
|
|
|
681 |
|
|
for (i = 0; i < noid; i++) { |
682 |
|
|
if (snmp_agentx_oid(pdu, &oid[i]) == -1 || |
683 |
|
|
snmp_agentx_oid(pdu, &nulloid) == -1) { |
684 |
|
|
snmp_agentx_pdu_free(pdu); |
685 |
|
|
return (NULL); |
686 |
|
|
} |
687 |
|
|
} |
688 |
|
|
|
689 |
|
|
return (pdu); |
690 |
|
|
} |
691 |
|
|
|
692 |
|
|
/* |
693 |
|
|
* AgentX PDU write routines. |
694 |
|
|
*/ |
695 |
|
|
|
696 |
|
|
int |
697 |
|
|
snmp_agentx_raw(struct agentx_pdu *pdu, void *data, int len) |
698 |
|
|
{ |
699 |
|
|
|
700 |
|
|
if (snmp_agentx_buffercheck(pdu, len) == -1) |
701 |
|
|
return (-1); |
702 |
|
|
|
703 |
|
|
memcpy(pdu->ptr, data, len); |
704 |
|
|
|
705 |
|
|
pdu->hdr->length += len; |
706 |
|
|
pdu->ptr += len; |
707 |
|
|
pdu->datalen += len; |
708 |
|
|
|
709 |
|
|
return (0); |
710 |
|
|
} |
711 |
|
|
|
712 |
|
|
int |
713 |
|
|
snmp_agentx_int(struct agentx_pdu *pdu, uint32_t *i) |
714 |
|
|
{ |
715 |
|
|
return (snmp_agentx_raw(pdu, i, sizeof(*i))); |
716 |
|
|
} |
717 |
|
|
|
718 |
|
|
int |
719 |
|
|
snmp_agentx_int64(struct agentx_pdu *pdu, uint64_t *i) |
720 |
|
|
{ |
721 |
|
|
return (snmp_agentx_raw(pdu, i, sizeof(*i))); |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
int |
725 |
|
|
snmp_agentx_octetstring(struct agentx_pdu *pdu, char *str, int len) |
726 |
|
|
{ |
727 |
|
|
static uint8_t pad[4] = { 0, 0, 0, 0 }; |
728 |
|
|
int padding; |
729 |
|
|
uint32_t l; |
730 |
|
|
|
731 |
|
|
padding = ((len + 3) & ~0x03) - len; |
732 |
|
|
|
733 |
|
|
l = len; |
734 |
|
|
if (snmp_agentx_int(pdu, &l) == -1 || |
735 |
|
|
snmp_agentx_raw(pdu, str, len) == -1 || |
736 |
|
|
snmp_agentx_raw(pdu, pad, padding) == -1) |
737 |
|
|
return (-1); |
738 |
|
|
|
739 |
|
|
return (0); |
740 |
|
|
} |
741 |
|
|
|
742 |
|
|
int |
743 |
|
|
snmp_agentx_oid(struct agentx_pdu *pdu, struct snmp_oid *oid) |
744 |
|
|
{ |
745 |
|
|
struct agentx_oid_hdr ohdr; |
746 |
|
|
u_int i, prefix; |
747 |
|
|
|
748 |
|
|
i = prefix = 0; |
749 |
|
|
|
750 |
|
|
if (oid->o_id[0] == 1 && oid->o_id[1] == 3 && |
751 |
|
|
oid->o_id[2] == 6 && oid->o_id[3] == 1 && |
752 |
|
|
oid->o_id[4] < 256) { |
753 |
|
|
prefix = oid->o_id[4]; |
754 |
|
|
i = 5; |
755 |
|
|
} |
756 |
|
|
|
757 |
|
|
if (prefix) |
758 |
|
|
ohdr.n_subid = oid->o_n - 5; |
759 |
|
|
else |
760 |
|
|
ohdr.n_subid = oid->o_n; |
761 |
|
|
ohdr.prefix = prefix; |
762 |
|
|
ohdr.include = 0; |
763 |
|
|
ohdr.reserved = 0; |
764 |
|
|
|
765 |
|
|
if (snmp_agentx_raw(pdu, &ohdr, sizeof(ohdr)) == -1) |
766 |
|
|
return (-1); |
767 |
|
|
|
768 |
|
|
for (; i < oid->o_n; i++) |
769 |
|
|
if (snmp_agentx_int(pdu, &oid->o_id[i]) == -1) |
770 |
|
|
return (-1); |
771 |
|
|
|
772 |
|
|
return (0); |
773 |
|
|
} |
774 |
|
|
|
775 |
|
|
int |
776 |
|
|
snmp_agentx_varbind(struct agentx_pdu *pdu, struct snmp_oid *oid, int type, |
777 |
|
|
void *data, int len) |
778 |
|
|
{ |
779 |
|
|
struct agentx_varbind_hdr vbhdr; |
780 |
|
|
|
781 |
|
|
vbhdr.type = type; |
782 |
|
|
vbhdr.reserved = 0; |
783 |
|
|
if (snmp_agentx_raw(pdu, &vbhdr, sizeof(vbhdr)) == -1) |
784 |
|
|
return (-1); |
785 |
|
|
|
786 |
|
|
if (snmp_agentx_oid(pdu, oid) == -1) |
787 |
|
|
return (-1); |
788 |
|
|
|
789 |
|
|
switch (type) { |
790 |
|
|
|
791 |
|
|
case AGENTX_NO_SUCH_OBJECT: |
792 |
|
|
case AGENTX_NO_SUCH_INSTANCE: |
793 |
|
|
case AGENTX_END_OF_MIB_VIEW: |
794 |
|
|
case AGENTX_NULL: |
795 |
|
|
/* no data follows the OID */ |
796 |
|
|
return (0); |
797 |
|
|
|
798 |
|
|
case AGENTX_IP_ADDRESS: |
799 |
|
|
case AGENTX_OPAQUE: |
800 |
|
|
case AGENTX_OCTET_STRING: |
801 |
|
|
return (snmp_agentx_octetstring(pdu, data, len)); |
802 |
|
|
|
803 |
|
|
case AGENTX_OBJECT_IDENTIFIER: |
804 |
|
|
return (snmp_agentx_oid(pdu, (struct snmp_oid *)data)); |
805 |
|
|
|
806 |
|
|
case AGENTX_INTEGER: |
807 |
|
|
case AGENTX_COUNTER32: |
808 |
|
|
case AGENTX_GAUGE32: |
809 |
|
|
case AGENTX_TIME_TICKS: |
810 |
|
|
return (snmp_agentx_int(pdu, (uint32_t *)data)); |
811 |
|
|
|
812 |
|
|
case AGENTX_COUNTER64: |
813 |
|
|
return (snmp_agentx_int64(pdu, (uint64_t *)data)); |
814 |
|
|
|
815 |
|
|
default: |
816 |
|
|
return (-1); |
817 |
|
|
} |
818 |
|
|
/* NOTREACHED */ |
819 |
|
|
} |
820 |
|
|
|
821 |
|
|
/* |
822 |
|
|
* AgentX PDU read routines. |
823 |
|
|
*/ |
824 |
|
|
|
825 |
|
|
int |
826 |
|
|
snmp_agentx_read_vbhdr(struct agentx_pdu *pdu, |
827 |
|
|
struct agentx_varbind_hdr *vbhdr) |
828 |
|
|
{ |
829 |
|
|
if (snmp_agentx_read_raw(pdu, vbhdr, sizeof(*vbhdr)) == -1) |
830 |
|
|
return (-1); |
831 |
|
|
if (!snmp_agentx_byteorder_native(pdu->hdr)) |
832 |
|
|
vbhdr->type = snmp_agentx_int16_byteswap(vbhdr->type); |
833 |
|
|
return (0); |
834 |
|
|
} |
835 |
|
|
|
836 |
|
|
int |
837 |
|
|
snmp_agentx_copy_raw(struct agentx_pdu *pdu, void *v, int len) |
838 |
|
|
{ |
839 |
|
|
return (snmp_agentx_do_read_raw(pdu, v, len, 0)); |
840 |
|
|
} |
841 |
|
|
|
842 |
|
|
int |
843 |
|
|
snmp_agentx_read_raw(struct agentx_pdu *pdu, void *v, int len) |
844 |
|
|
{ |
845 |
|
|
return (snmp_agentx_do_read_raw(pdu, v, len, 1)); |
846 |
|
|
} |
847 |
|
|
|
848 |
|
|
int |
849 |
|
|
snmp_agentx_do_read_raw(struct agentx_pdu *pdu, void *v, int len, int consume) |
850 |
|
|
{ |
851 |
|
|
void *ptr = pdu->ptr; |
852 |
|
|
|
853 |
|
|
if (consume) |
854 |
|
|
if (snmp_agentx_buffer_consume(pdu, len) == -1) |
855 |
|
|
return (-1); |
856 |
|
|
|
857 |
|
|
memcpy(v, ptr, len); |
858 |
|
|
|
859 |
|
|
return (0); |
860 |
|
|
} |
861 |
|
|
|
862 |
|
|
int |
863 |
|
|
snmp_agentx_read_int(struct agentx_pdu *pdu, uint32_t *i) |
864 |
|
|
{ |
865 |
|
|
if (snmp_agentx_read_raw(pdu, i, sizeof(*i)) == -1) |
866 |
|
|
return (-1); |
867 |
|
|
if (!snmp_agentx_byteorder_native(pdu->hdr)) |
868 |
|
|
*i = snmp_agentx_int_byteswap(*i); |
869 |
|
|
return (0); |
870 |
|
|
} |
871 |
|
|
|
872 |
|
|
int |
873 |
|
|
snmp_agentx_read_int64(struct agentx_pdu *pdu, uint64_t *i) |
874 |
|
|
{ |
875 |
|
|
if (snmp_agentx_read_raw(pdu, i, sizeof(*i)) == -1) |
876 |
|
|
return (-1); |
877 |
|
|
if (!snmp_agentx_byteorder_native(pdu->hdr)) |
878 |
|
|
*i = snmp_agentx_int64_byteswap(*i); |
879 |
|
|
return (0); |
880 |
|
|
} |
881 |
|
|
|
882 |
|
|
int |
883 |
|
|
snmp_agentx_read_oid(struct agentx_pdu *pdu, struct snmp_oid *oid) |
884 |
|
|
{ |
885 |
|
|
int dummy; |
886 |
|
|
|
887 |
|
|
return (snmp_agentx_do_read_oid(pdu, oid, &dummy)); |
888 |
|
|
} |
889 |
|
|
|
890 |
|
|
int |
891 |
|
|
snmp_agentx_do_read_oid(struct agentx_pdu *pdu, struct snmp_oid *oid, |
892 |
|
|
int *include) |
893 |
|
|
{ |
894 |
|
|
struct agentx_oid_hdr ohdr; |
895 |
|
|
int i = 0; |
896 |
|
|
|
897 |
|
|
if (snmp_agentx_read_raw(pdu, &ohdr, sizeof(ohdr)) == -1) |
898 |
|
|
return (-1); |
899 |
|
|
|
900 |
|
|
bzero(oid, sizeof(*oid)); |
901 |
|
|
|
902 |
|
|
if (ohdr.prefix != 0) { |
903 |
|
|
oid->o_id[0] = 1; |
904 |
|
|
oid->o_id[1] = 3; |
905 |
|
|
oid->o_id[2] = 6; |
906 |
|
|
oid->o_id[3] = 1; |
907 |
|
|
oid->o_id[4] = ohdr.prefix; |
908 |
|
|
i = 5; |
909 |
|
|
} |
910 |
|
|
|
911 |
|
|
while (ohdr.n_subid--) |
912 |
|
|
if (snmp_agentx_read_int(pdu, &oid->o_id[i++]) == -1) |
913 |
|
|
return (-1); |
914 |
|
|
|
915 |
|
|
oid->o_n = i; |
916 |
|
|
*include = ohdr.include; |
917 |
|
|
|
918 |
|
|
return (0); |
919 |
|
|
} |
920 |
|
|
|
921 |
|
|
int |
922 |
|
|
snmp_agentx_read_searchrange(struct agentx_pdu *pdu, |
923 |
|
|
struct agentx_search_range *sr) |
924 |
|
|
{ |
925 |
|
|
if (snmp_agentx_do_read_oid(pdu, &sr->start, &sr->include) == -1 || |
926 |
|
|
snmp_agentx_read_oid(pdu, &sr->end) == -1) |
927 |
|
|
return (-1); |
928 |
|
|
|
929 |
|
|
return (0); |
930 |
|
|
} |
931 |
|
|
|
932 |
|
|
char * |
933 |
|
|
snmp_agentx_read_octetstr(struct agentx_pdu *pdu, int *len) |
934 |
|
|
{ |
935 |
|
|
char *str; |
936 |
|
|
uint32_t l; |
937 |
|
|
|
938 |
|
|
if (snmp_agentx_read_int(pdu, &l) == -1) |
939 |
|
|
return (NULL); |
940 |
|
|
|
941 |
|
|
if ((str = malloc(l)) == NULL) |
942 |
|
|
return (NULL); |
943 |
|
|
|
944 |
|
|
if (snmp_agentx_read_raw(pdu, str, l) == -1) { |
945 |
|
|
free(str); |
946 |
|
|
return (NULL); |
947 |
|
|
} |
948 |
|
|
*len = l; |
949 |
|
|
|
950 |
|
|
return (str); |
951 |
|
|
} |
952 |
|
|
|
953 |
|
|
/* |
954 |
|
|
* Synchronous AgentX calls. |
955 |
|
|
*/ |
956 |
|
|
|
957 |
|
|
int |
958 |
|
|
snmp_agentx_ping(struct agentx_handle *h) |
959 |
|
|
{ |
960 |
|
|
struct agentx_pdu *pdu; |
961 |
|
|
int error = 0; |
962 |
|
|
|
963 |
|
|
if ((pdu = snmp_agentx_ping_pdu()) == NULL) |
964 |
|
|
return (-1); |
965 |
|
|
|
966 |
|
|
/* Attaches the pdu to the handle; will be released later */ |
967 |
|
|
if ((pdu = snmp_agentx_request(h, pdu)) == NULL) |
968 |
|
|
return (-1); |
969 |
|
|
|
970 |
|
|
if (snmp_agentx_response(h, pdu) == -1) |
971 |
|
|
error = -1; |
972 |
|
|
snmp_agentx_pdu_free(pdu); |
973 |
|
|
|
974 |
|
|
return (error); |
975 |
|
|
} |
976 |
|
|
|
977 |
|
|
/* |
978 |
|
|
* Internal utility functions. |
979 |
|
|
*/ |
980 |
|
|
|
981 |
|
|
void |
982 |
|
|
snmp_agentx_update_ids(struct agentx_handle *h, struct agentx_pdu *pdu) |
983 |
|
|
{ |
984 |
|
|
/* XXX -- update to reflect the new queueing semantics */ |
985 |
|
|
h->transactid = pdu->hdr->transactid; |
986 |
|
|
h->packetid = pdu->hdr->packetid; |
987 |
|
|
} |
988 |
|
|
|
989 |
|
|
char * |
990 |
|
|
snmp_oid2string(struct snmp_oid *o, char *buf, size_t len) |
991 |
|
|
{ |
992 |
|
|
char str[256]; |
993 |
|
|
size_t i; |
994 |
|
|
|
995 |
|
|
bzero(buf, len); |
996 |
|
|
|
997 |
|
|
for (i = 0; i < o->o_n; i++) { |
998 |
|
|
snprintf(str, sizeof(str), "%u", o->o_id[i]); |
999 |
|
|
strlcat(buf, str, len); |
1000 |
|
|
if (i < (o->o_n - 1)) |
1001 |
|
|
strlcat(buf, ".", len); |
1002 |
|
|
} |
1003 |
|
|
|
1004 |
|
|
return (buf); |
1005 |
|
|
} |
1006 |
|
|
|
1007 |
|
|
int |
1008 |
|
|
snmp_oid_cmp(struct snmp_oid *a, struct snmp_oid *b) |
1009 |
|
|
{ |
1010 |
|
|
size_t i; |
1011 |
|
|
|
1012 |
|
|
for (i = 0; i < SNMP_MAX_OID_LEN; i++) { |
1013 |
|
|
if (a->o_id[i] != 0) { |
1014 |
|
|
if (a->o_id[i] == b->o_id[i]) |
1015 |
|
|
continue; |
1016 |
|
|
else if (a->o_id[i] < b->o_id[i]) { |
1017 |
|
|
/* b is a successor of a */ |
1018 |
|
|
return (1); |
1019 |
|
|
} else { |
1020 |
|
|
/* b is a predecessor of a */ |
1021 |
|
|
return (-1); |
1022 |
|
|
} |
1023 |
|
|
} else if (b->o_id[i] != 0) { |
1024 |
|
|
/* b is larger, but a child of a */ |
1025 |
|
|
return (2); |
1026 |
|
|
} else |
1027 |
|
|
break; |
1028 |
|
|
} |
1029 |
|
|
|
1030 |
|
|
/* b and a are identical */ |
1031 |
|
|
return (0); |
1032 |
|
|
} |
1033 |
|
|
|
1034 |
|
|
void |
1035 |
|
|
snmp_oid_increment(struct snmp_oid *o) |
1036 |
|
|
{ |
1037 |
|
|
u_int i; |
1038 |
|
|
|
1039 |
|
|
for (i = o->o_n; i > 0; i--) { |
1040 |
|
|
o->o_id[i - 1]++; |
1041 |
|
|
if (o->o_id[i - 1] != 0) |
1042 |
|
|
break; |
1043 |
|
|
} |
1044 |
|
|
} |
1045 |
|
|
|
1046 |
|
|
char * |
1047 |
|
|
snmp_agentx_type2name(int type) |
1048 |
|
|
{ |
1049 |
|
|
static char *names[] = { |
1050 |
|
|
"AGENTX_OPEN", |
1051 |
|
|
"AGENTX_CLOSE", |
1052 |
|
|
"AGENTX_REGISTER", |
1053 |
|
|
"AGENTX_UNREGISTER", |
1054 |
|
|
"AGENTX_GET", |
1055 |
|
|
"AGENTX_GET_NEXT", |
1056 |
|
|
"AGENTX_GET_BULK", |
1057 |
|
|
"AGENTX_TEST_SET", |
1058 |
|
|
"AGENTX_COMMIT_SET", |
1059 |
|
|
"AGENTX_UNDO_SET", |
1060 |
|
|
"AGENTX_CLEANUP_SET", |
1061 |
|
|
"AGENTX_NOTIFY", |
1062 |
|
|
"AGENTX_PING", |
1063 |
|
|
"AGENTX_INDEX_ALLOCATE", |
1064 |
|
|
"AGENTX_INDEX_DEALLOCATE", |
1065 |
|
|
"AGENTX_ADD_AGENT_CAPS", |
1066 |
|
|
"AGENTX_REMOVE_AGENT_CAPS", |
1067 |
|
|
"AGENTX_RESPONSE" |
1068 |
|
|
}; |
1069 |
|
|
|
1070 |
|
|
if (type > 18) |
1071 |
|
|
return ("unknown"); |
1072 |
|
|
|
1073 |
|
|
return (names[type - 1]); |
1074 |
|
|
} |
1075 |
|
|
|
1076 |
|
|
#ifdef DEBUG |
1077 |
|
|
static void |
1078 |
|
|
snmp_agentx_dump_hdr(struct agentx_hdr *hdr) |
1079 |
|
|
{ |
1080 |
|
|
if (hdr == NULL) { |
1081 |
|
|
printf("NULL\n"); |
1082 |
|
|
return; |
1083 |
|
|
} |
1084 |
|
|
|
1085 |
|
|
fprintf(stderr, |
1086 |
|
|
"agentx: version %d type %s flags %d reserved %d" |
1087 |
|
|
" sessionid %d transactid %d packetid %d length %d", |
1088 |
|
|
hdr->version, snmp_agentx_type2name(hdr->type), hdr->flags, |
1089 |
|
|
hdr->reserved, hdr->sessionid, hdr->transactid, |
1090 |
|
|
hdr->packetid, hdr->length); |
1091 |
|
|
|
1092 |
|
|
if (hdr->type == AGENTX_RESPONSE) { |
1093 |
|
|
struct agentx_response *r = (struct agentx_response *)hdr; |
1094 |
|
|
|
1095 |
|
|
fprintf(stderr, " sysuptime %d error %d index %d", |
1096 |
|
|
r->data.sysuptime, r->data.error, r->data.index); |
1097 |
|
|
} |
1098 |
|
|
|
1099 |
|
|
fprintf(stderr, "\n"); |
1100 |
|
|
} |
1101 |
|
|
#endif |