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43d4303e | 1 | /* |
c68e9c6b | 2 | * $Id: snmp_core.cc,v 1.14 1998/11/12 06:28:23 wessels Exp $ |
43d4303e | 3 | * |
4 | * DEBUG: section 49 SNMP support | |
dba79ac5 | 5 | * AUTHOR: Glenn Chisholm |
43d4303e | 6 | * |
7 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ | |
e25c139f | 8 | * ---------------------------------------------------------- |
43d4303e | 9 | * |
10 | * Squid is the result of efforts by numerous individuals from the | |
11 | * Internet community. Development is led by Duane Wessels of the | |
e25c139f | 12 | * National Laboratory for Applied Network Research and funded by the |
13 | * National Science Foundation. Squid is Copyrighted (C) 1998 by | |
14 | * Duane Wessels and the University of California San Diego. Please | |
15 | * see the COPYRIGHT file for full details. Squid incorporates | |
16 | * software developed and/or copyrighted by other sources. Please see | |
17 | * the CREDITS file for full details. | |
43d4303e | 18 | * |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
dba79ac5 | 23 | * |
43d4303e | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
dba79ac5 | 28 | * |
43d4303e | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
cbdec147 | 31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 32 | * |
43d4303e | 33 | */ |
43d4303e | 34 | #include "squid.h" |
43d4303e | 35 | #include "cache_snmp.h" |
43d4303e | 36 | |
37 | #define SNMP_REQUEST_SIZE 4096 | |
38 | #define MAX_PROTOSTAT 5 | |
39 | ||
dba79ac5 | 40 | struct _mib_tree_entry { |
c68e9c6b | 41 | oid *name; |
42 | int len; | |
43 | oid_ParseFn *parsefunction; | |
44 | int children; | |
45 | struct _mib_tree_entry **leaves; | |
46 | struct _mib_tree_entry *parent; | |
dba79ac5 | 47 | }; |
43d4303e | 48 | |
dba79ac5 | 49 | struct _snmpUdpData { |
43d4303e | 50 | struct sockaddr_in address; |
51 | void *msg; | |
52 | int len; | |
dba79ac5 | 53 | struct _snmpUdpData *next; |
43d4303e | 54 | }; |
55 | ||
dba79ac5 | 56 | typedef struct _snmpUdpData snmpUdpData; |
57 | typedef struct _mib_tree_entry mib_tree_entry; | |
43d4303e | 58 | |
dba79ac5 | 59 | mib_tree_entry *mib_tree_head; |
60 | snmpUdpData *snmpUdpHead = NULL; | |
61 | snmpUdpData *snmpUdpTail = NULL; | |
43d4303e | 62 | |
dba79ac5 | 63 | extern void (*snmplib_debug_hook) (int, char *); |
43d4303e | 64 | |
dba79ac5 | 65 | static void snmpDecodePacket(snmp_request_t * rq); |
66 | static void snmpConstructReponse(snmp_request_t * rq, struct snmp_session *Session); | |
c68e9c6b | 67 | static struct snmp_pdu *snmpAgentResponse(struct snmp_pdu *PDU); |
43d4303e | 68 | |
dba79ac5 | 69 | static void snmpUdpSend(int, const struct sockaddr_in *, void *, int); |
70 | static void snmpUdpReply(int, void *); | |
71 | static void snmpAppendUdp(snmpUdpData *); | |
43d4303e | 72 | |
43d4303e | 73 | |
c68e9c6b | 74 | static mib_tree_entry *snmpAddNode(oid * name, int len, oid_ParseFn * parsefunction, int children,...); |
75 | static oid_ParseFn *snmpTreeNext(oid * Current, snint CurrentLen, oid ** Next, snint * NextLen); | |
76 | static mib_tree_entry *snmpTreeEntry(oid entry, snint len, mib_tree_entry * current); | |
43d4303e | 77 | |
c68e9c6b | 78 | static oid *snmpCreateOid(int length,...); |
79 | static oid *snmpOidDup(oid * A, snint ALen); | |
dba79ac5 | 80 | static void snmpSnmplibDebug(int lvl, char *buf); |
43d4303e | 81 | |
43d4303e | 82 | |
dba79ac5 | 83 | /* |
84 | * The functions used during startup: | |
85 | * snmpInit | |
86 | * snmpConnectionOpen | |
87 | * snmpConnectionShutdown | |
88 | * snmpConnectionClose | |
89 | */ | |
43d4303e | 90 | |
dba79ac5 | 91 | /* |
c68e9c6b | 92 | * Turns the MIB into a Tree structure. Called during the startup process. |
93 | */ | |
43d4303e | 94 | void |
95 | snmpInit(void) | |
96 | { | |
dba79ac5 | 97 | debug(49, 5) ("snmpInit: Called.\n"); |
98 | ||
99 | debug(49, 5) ("snmpInit: Building SNMP mib tree structure\n"); | |
100 | ||
43d4303e | 101 | snmplib_debug_hook = snmpSnmplibDebug; |
102 | ||
dba79ac5 | 103 | mib_tree_head = snmpAddNode(snmpCreateOid(1, 1), |
104 | 1, NULL, 1, | |
105 | snmpAddNode(snmpCreateOid(2, 1, 3), | |
106 | 2, NULL, 1, | |
107 | snmpAddNode(snmpCreateOid(3, 1, 3, 6), | |
108 | 3, NULL, 1, | |
109 | snmpAddNode(snmpCreateOid(4, 1, 3, 6, 1), | |
110 | 4, NULL, 1, | |
111 | snmpAddNode(snmpCreateOid(5, 1, 3, 6, 1, 4), | |
112 | 5, NULL, 1, | |
113 | snmpAddNode(snmpCreateOid(6, 1, 3, 6, 1, 4, 1), | |
114 | 6, NULL, 1, | |
115 | snmpAddNode(snmpCreateOid(7, 1, 3, 6, 1, 4, 1, 3495), | |
116 | 7, NULL, 1, | |
117 | snmpAddNode(snmpCreateOid(LEN_SQUIDMIB, SQUIDMIB), | |
118 | 8, NULL, 5, | |
119 | snmpAddNode(snmpCreateOid(LEN_SQ_SYS, SQ_SYS), | |
120 | LEN_SQ_SYS, NULL, 3, | |
121 | snmpAddNode(snmpCreateOid(LEN_SQ_SYS + 1, SQ_SYS, 1), | |
122 | LEN_SQ_SYS + 1, snmp_sysFn, 0), | |
123 | snmpAddNode(snmpCreateOid(LEN_SQ_SYS + 1, SQ_SYS, 2), | |
124 | LEN_SQ_SYS + 1, snmp_sysFn, 0), | |
125 | snmpAddNode(snmpCreateOid(LEN_SQ_SYS + 1, SQ_SYS, 3), | |
126 | LEN_SQ_SYS + 1, snmp_sysFn, 0)), | |
127 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF, SQ_CONF), | |
128 | LEN_SQ_CONF, NULL, 5, | |
129 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 1, SQ_CONF, 1), | |
130 | LEN_SQ_CONF + 1, snmp_confFn, 0), | |
131 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 1, SQ_CONF, 2), | |
132 | LEN_SQ_CONF + 1, snmp_confFn, 0), | |
133 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 1, SQ_CONF, 3), | |
134 | LEN_SQ_CONF + 1, snmp_confFn, 0), | |
135 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 1, SQ_CONF, 4), | |
136 | LEN_SQ_CONF + 1, snmp_confFn, 0), | |
137 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 1, SQ_CONF, 5), | |
138 | LEN_SQ_CONF + 1, NULL, 6, | |
139 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 1), | |
140 | LEN_SQ_CONF + 2, snmp_confFn, 0), | |
141 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 2), | |
142 | LEN_SQ_CONF + 2, snmp_confFn, 0), | |
143 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 3), | |
144 | LEN_SQ_CONF + 2, snmp_confFn, 0), | |
145 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 4), | |
146 | LEN_SQ_CONF + 2, snmp_confFn, 0), | |
147 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 5), | |
148 | LEN_SQ_CONF + 2, snmp_confFn, 0), | |
149 | snmpAddNode(snmpCreateOid(LEN_SQ_CONF + 2, SQ_CONF, 5, 6), | |
150 | LEN_SQ_CONF + 2, snmp_confFn, 0))), | |
151 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF, SQ_PRF), | |
152 | LEN_SQ_PRF, snmp_confFn, 2, | |
153 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 1, SQ_PRF, 1), | |
154 | LEN_SQ_PRF + 1, snmp_sysFn, 11, | |
155 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 1), | |
156 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
157 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 2), | |
158 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
159 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 3), | |
160 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
161 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 4), | |
162 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
163 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 5), | |
164 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
165 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 6), | |
166 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
167 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 7), | |
168 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
169 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 8), | |
170 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
171 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 9), | |
172 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
173 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 10), | |
174 | LEN_SQ_PRF + 2, snmp_sysFn, 0), | |
175 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 1, 11), | |
176 | LEN_SQ_PRF + 2, snmp_sysFn, 0)), | |
177 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 1, SQ_PRF, 2), | |
178 | LEN_SQ_PRF + 1, snmp_sysFn, 2, | |
179 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 2, 1), | |
180 | LEN_SQ_PRF + 2, snmp_sysFn, 14, | |
181 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 1), | |
182 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
183 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 2), | |
184 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
185 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 3), | |
186 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
187 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 4), | |
188 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
189 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 5), | |
190 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
191 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 6), | |
192 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
193 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 7), | |
194 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
195 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 8), | |
196 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
197 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 9), | |
198 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
199 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 10), | |
200 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
201 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 11), | |
202 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
203 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 12), | |
204 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
205 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 13), | |
206 | LEN_SQ_PRF + 3, snmp_sysFn, 0), | |
207 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 1, 14), | |
208 | LEN_SQ_PRF + 3, snmp_sysFn, 0)), | |
209 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 2, SQ_PRF, 2, 2), | |
210 | LEN_SQ_PRF + 2, snmp_sysFn, 1, | |
211 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 3, SQ_PRF, 2, 2, 1), | |
212 | LEN_SQ_PRF + 3, snmp_sysFn, 8, | |
213 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 1), | |
214 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
215 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 2), | |
216 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
217 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 3), | |
218 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
219 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 4), | |
220 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
221 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 5), | |
222 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
223 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 6), | |
224 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
225 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 7), | |
226 | LEN_SQ_PRF + 4, snmp_sysFn, 0), | |
227 | snmpAddNode(snmpCreateOid(LEN_SQ_PRF + 4, SQ_PRF, 2, 2, 1, 8), | |
228 | LEN_SQ_PRF + 4, snmp_sysFn, 0))))), | |
229 | snmpAddNode(snmpCreateOid(LEN_SQ_NET, SQ_NET), | |
230 | LEN_SQ_NET, snmp_confFn, 3, | |
231 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 1, SQ_NET, 1), | |
232 | LEN_SQ_NET + 1, snmp_sysFn, 9, | |
233 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 1), | |
234 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
235 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 2), | |
236 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
237 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 3), | |
238 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
239 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 4), | |
240 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
241 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 5), | |
242 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
243 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 6), | |
244 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
245 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 7), | |
246 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
247 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 8), | |
248 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
249 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 1, 9), | |
250 | LEN_SQ_NET + 2, snmp_sysFn, 0)), | |
251 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 1, SQ_NET, 2), | |
252 | LEN_SQ_NET + 1, snmp_sysFn, 8, | |
253 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 1), | |
254 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
255 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 2), | |
256 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
257 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 3), | |
258 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
259 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 4), | |
260 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
261 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 5), | |
262 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
263 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 6), | |
264 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
265 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 7), | |
266 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
267 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 2, 8), | |
268 | LEN_SQ_NET + 2, snmp_sysFn, 0)), | |
269 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 1, SQ_NET, 3), | |
270 | LEN_SQ_NET + 1, snmp_sysFn, 3, | |
271 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 3, 1), | |
272 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
273 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 3, 2), | |
274 | LEN_SQ_NET + 2, snmp_sysFn, 0), | |
275 | snmpAddNode(snmpCreateOid(LEN_SQ_NET + 2, SQ_NET, 3, 3), | |
276 | LEN_SQ_NET + 2, snmp_sysFn, 0))), | |
277 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH, SQ_MESH), | |
278 | LEN_SQ_MESH, snmp_confFn, 2, | |
279 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 1, SQ_MESH, 1), | |
280 | LEN_SQ_MESH + 1, snmp_sysFn, 1, | |
281 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 2, SQ_MESH, 1, 1), | |
282 | LEN_SQ_MESH + 2, snmp_sysFn, 13, | |
283 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 1), | |
284 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
285 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 2), | |
286 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
287 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 3), | |
288 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
289 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 4), | |
290 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
291 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 5), | |
292 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
293 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 6), | |
294 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
295 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 7), | |
296 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
297 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 8), | |
298 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
299 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 9), | |
300 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
301 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 10), | |
302 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
303 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 11), | |
304 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
305 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 12), | |
306 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
307 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 1, 1, 13), | |
308 | LEN_SQ_MESH + 3, snmp_sysFn, 0))), | |
309 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 1, SQ_MESH, 2), | |
310 | LEN_SQ_MESH + 1, snmp_sysFn, 1, | |
311 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 2, SQ_MESH, 2, 1), | |
312 | LEN_SQ_MESH + 2, snmp_sysFn, 9, | |
313 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 1), | |
314 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
315 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 2), | |
316 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
317 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 3), | |
318 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
319 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 4), | |
320 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
321 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 5), | |
322 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
323 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 6), | |
324 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
325 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 7), | |
326 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
327 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 8), | |
328 | LEN_SQ_MESH + 3, snmp_sysFn, 0), | |
329 | snmpAddNode(snmpCreateOid(LEN_SQ_MESH + 3, SQ_MESH, 2, 1, 9), | |
330 | LEN_SQ_MESH + 3, snmp_sysFn, 0)))) | |
331 | ) | |
332 | ) | |
333 | ) | |
334 | ) | |
335 | ) | |
336 | ) | |
337 | ) | |
338 | ); | |
339 | ||
340 | debug(49, 9) ("snmpInit: Completed SNMP mib tree structure\n"); | |
43d4303e | 341 | } |
342 | ||
343 | void | |
344 | snmpConnectionOpen(void) | |
345 | { | |
346 | u_short port; | |
43d4303e | 347 | struct sockaddr_in xaddr; |
6637e3a5 | 348 | socklen_t len; |
43d4303e | 349 | int x; |
350 | ||
c68e9c6b | 351 | debug(49, 5) ("snmpConnectionOpen: Called\n"); |
43d4303e | 352 | if ((port = Config.Port.snmp) > (u_short) 0) { |
c68e9c6b | 353 | enter_suid(); |
354 | theInSnmpConnection = comm_open(SOCK_DGRAM, | |
355 | 0, | |
356 | Config.Addrs.snmp_incoming, | |
357 | port, | |
358 | COMM_NONBLOCKING, | |
359 | "SNMP Port"); | |
360 | leave_suid(); | |
361 | if (theInSnmpConnection < 0) | |
362 | fatal("Cannot open snmp Port"); | |
363 | commSetSelect(theInSnmpConnection, COMM_SELECT_READ, snmpHandleUdp, NULL, 0); | |
364 | debug(1, 1) ("Accepting SNMP messages on port %d, FD %d.\n", | |
365 | (int) port, theInSnmpConnection); | |
366 | if (Config.Addrs.snmp_outgoing.s_addr != no_addr.s_addr) { | |
367 | enter_suid(); | |
368 | theOutSnmpConnection = comm_open(SOCK_DGRAM, | |
369 | 0, | |
370 | Config.Addrs.snmp_outgoing, | |
371 | port, | |
372 | COMM_NONBLOCKING, | |
373 | "SNMP Port"); | |
374 | leave_suid(); | |
375 | if (theOutSnmpConnection < 0) | |
376 | fatal("Cannot open Outgoing SNMP Port"); | |
377 | commSetSelect(theOutSnmpConnection, | |
378 | COMM_SELECT_READ, | |
379 | snmpHandleUdp, | |
380 | NULL, 0); | |
381 | debug(1, 1) ("Outgoing SNMP messages on port %d, FD %d.\n", | |
382 | (int) port, theOutSnmpConnection); | |
383 | fd_note(theOutSnmpConnection, "Outgoing SNMP socket"); | |
384 | fd_note(theInSnmpConnection, "Incoming SNMP socket"); | |
385 | } else { | |
386 | theOutSnmpConnection = theInSnmpConnection; | |
387 | } | |
388 | memset(&theOutSNMPAddr, '\0', sizeof(struct in_addr)); | |
389 | len = sizeof(struct sockaddr_in); | |
390 | memset(&xaddr, '\0', len); | |
391 | x = getsockname(theOutSnmpConnection, | |
392 | (struct sockaddr *) &xaddr, &len); | |
393 | if (x < 0) | |
394 | debug(51, 1) ("theOutSnmpConnection FD %d: getsockname: %s\n", | |
395 | theOutSnmpConnection, xstrerror()); | |
396 | else | |
397 | theOutSNMPAddr = xaddr.sin_addr; | |
43d4303e | 398 | } |
399 | } | |
400 | ||
43d4303e | 401 | void |
402 | snmpConnectionShutdown(void) | |
403 | { | |
404 | if (theInSnmpConnection < 0) | |
c68e9c6b | 405 | return; |
43d4303e | 406 | if (theInSnmpConnection != theOutSnmpConnection) { |
c68e9c6b | 407 | debug(49, 1) ("FD %d Closing SNMP socket\n", theInSnmpConnection); |
408 | comm_close(theInSnmpConnection); | |
43d4303e | 409 | } |
410 | /* | |
411 | * Here we set 'theInSnmpConnection' to -1 even though the SNMP 'in' | |
412 | * and 'out' sockets might be just one FD. This prevents this | |
413 | * function from executing repeatedly. When we are really ready to | |
414 | * exit or restart, main will comm_close the 'out' descriptor. | |
415 | */ theInSnmpConnection = -1; | |
dba79ac5 | 416 | /* |
43d4303e | 417 | * Normally we only write to the outgoing SNMP socket, but we |
418 | * also have a read handler there to catch messages sent to that | |
419 | * specific interface. During shutdown, we must disable reading | |
420 | * on the outgoing socket. | |
421 | */ | |
422 | assert(theOutSnmpConnection > -1); | |
423 | commSetSelect(theOutSnmpConnection, COMM_SELECT_READ, NULL, NULL, 0); | |
424 | } | |
425 | ||
426 | void | |
427 | snmpConnectionClose(void) | |
428 | { | |
429 | snmpConnectionShutdown(); | |
430 | if (theOutSnmpConnection > -1) { | |
c68e9c6b | 431 | debug(49, 1) ("FD %d Closing SNMP socket\n", theOutSnmpConnection); |
432 | comm_close(theOutSnmpConnection); | |
43d4303e | 433 | } |
434 | } | |
435 | ||
dba79ac5 | 436 | /* |
c68e9c6b | 437 | * Functions for handling the requests. |
438 | */ | |
43d4303e | 439 | |
dba79ac5 | 440 | /* |
441 | * Accept the UDP packet | |
442 | */ | |
43d4303e | 443 | void |
dba79ac5 | 444 | snmpHandleUdp(int sock, void *not_used) |
43d4303e | 445 | { |
dba79ac5 | 446 | LOCAL_ARRAY(char, buf, SNMP_REQUEST_SIZE); |
447 | struct sockaddr_in from; | |
448 | socklen_t from_len; | |
449 | snmp_request_t *snmp_rq; | |
450 | int len; | |
451 | ||
452 | debug(49, 5) ("snmpHandleUdp: Called.\n"); | |
453 | ||
454 | commSetSelect(sock, COMM_SELECT_READ, snmpHandleUdp, NULL, 0); | |
455 | from_len = sizeof(struct sockaddr_in); | |
456 | memset(&from, '\0', from_len); | |
457 | ||
458 | Counter.syscalls.sock.recvfroms++; | |
459 | ||
460 | len = recvfrom(sock, | |
461 | buf, | |
462 | SNMP_REQUEST_SIZE, | |
463 | 0, | |
464 | (struct sockaddr *) &from, | |
465 | &from_len); | |
466 | ||
467 | if (len > 0) { | |
468 | buf[len] = '\0'; | |
469 | debug(49, 3) ("snmpHandleUdp: FD %d: received %d bytes from %s.\n", | |
470 | sock, | |
471 | len, | |
472 | inet_ntoa(from.sin_addr)); | |
473 | ||
474 | snmp_rq = xcalloc(1, sizeof(snmp_request_t)); | |
475 | snmp_rq->buf = (u_char *) buf; | |
476 | snmp_rq->len = len; | |
477 | snmp_rq->sock = sock; | |
478 | snmp_rq->outbuf = xmalloc(snmp_rq->outlen = SNMP_REQUEST_SIZE); | |
479 | memcpy(&snmp_rq->from, &from, sizeof(struct sockaddr_in)); | |
480 | snmpDecodePacket(snmp_rq); | |
481 | } else { | |
482 | debug(49, 1) ("snmpHandleUdp: FD %d recvfrom: %s\n", sock, xstrerror()); | |
483 | } | |
484 | } | |
43d4303e | 485 | |
dba79ac5 | 486 | /* |
487 | * Turn SNMP packet into a PDU, check available ACL's | |
488 | */ | |
489 | void | |
490 | snmpDecodePacket(snmp_request_t * rq) | |
491 | { | |
43d4303e | 492 | struct snmp_pdu *PDU; |
dba79ac5 | 493 | struct snmp_session *Session; |
494 | aclCheck_t checklist; | |
43d4303e | 495 | u_char *Community; |
dba79ac5 | 496 | u_char *buf = rq->buf; |
497 | int len = rq->len; | |
498 | int allow = 0; | |
43d4303e | 499 | |
dba79ac5 | 500 | debug(49, 5) ("snmpDecodePacket: Called.\n"); |
43d4303e | 501 | /* Now that we have the data, turn it into a PDU */ |
dba79ac5 | 502 | Session = (struct snmp_session *) xmalloc(sizeof(struct snmp_session)); |
503 | Session->Version = SNMP_VERSION_1; | |
504 | Session->authenticator = NULL; | |
505 | Session->community = (u_char *) xstrdup("public"); | |
506 | Session->community_len = 6; | |
43d4303e | 507 | cbdataAdd(rq, MEM_NONE); |
508 | PDU = snmp_pdu_create(0); | |
509 | Community = snmp_parse(Session, PDU, buf, len); | |
510 | ||
dba79ac5 | 511 | checklist.src_addr = rq->from.sin_addr; |
512 | checklist.snmp_community = Community; | |
513 | ||
514 | allow = aclCheckFast(Config.accessList.snmp, &checklist); | |
515 | if ((snmp_coexist_V2toV1(PDU)) && (Community) && (allow)) { | |
516 | rq->community = Community; | |
517 | rq->PDU = PDU; | |
518 | debug(49, 5) ("snmpAgentParse: reqid=[%d]\n", PDU->reqid); | |
519 | snmpConstructReponse(rq, Session); | |
520 | } else { | |
b644367b | 521 | snmp_free_pdu(PDU); |
43d4303e | 522 | } |
dba79ac5 | 523 | } |
43d4303e | 524 | |
dba79ac5 | 525 | /* |
526 | * Packet OK, ACL Check OK, Create reponse. | |
527 | */ | |
528 | void | |
529 | snmpConstructReponse(snmp_request_t * rq, struct snmp_session *Session) | |
530 | { | |
531 | struct snmp_pdu *RespPDU; | |
532 | int ret; | |
43d4303e | 533 | |
dba79ac5 | 534 | debug(49, 5) ("snmpConstructReponse: Called.\n"); |
535 | ||
536 | Session->community = rq->community; | |
537 | Session->community_len = strlen((char *) rq->community); | |
538 | ||
539 | RespPDU = snmpAgentResponse(rq->PDU); | |
540 | snmp_free_pdu(rq->PDU); | |
541 | xfree(Session); | |
542 | if (RespPDU == NULL) { | |
543 | } else { | |
544 | ret = snmp_build(Session, RespPDU, rq->outbuf, &rq->outlen); | |
545 | snmpUdpSend(rq->sock, &rq->from, rq->outbuf, rq->outlen); | |
546 | snmp_free_pdu(RespPDU); | |
43d4303e | 547 | } |
43d4303e | 548 | } |
549 | ||
dba79ac5 | 550 | /* |
551 | * Decide how to respond to the request, construct a response and | |
552 | * return the response to the requester. | |
553 | * | |
554 | * If configured forward any reponses which are not for this agent. | |
555 | */ | |
43d4303e | 556 | struct snmp_pdu * |
557 | snmpAgentResponse(struct snmp_pdu *PDU) | |
558 | { | |
559 | struct snmp_pdu *Answer = NULL; | |
dba79ac5 | 560 | oid_ParseFn *ParseFn = NULL; |
561 | variable_list *VarNew = NULL; | |
43d4303e | 562 | |
dba79ac5 | 563 | debug(49, 5) ("snmpAgentResponse: Called.\n"); |
43d4303e | 564 | |
dba79ac5 | 565 | if ((Answer = snmp_pdu_create(SNMP_PDU_RESPONSE))) { |
566 | Answer->reqid = PDU->reqid; | |
567 | Answer->errindex = 0; | |
568 | if (PDU->command == SNMP_PDU_GET) { | |
43d4303e | 569 | |
dba79ac5 | 570 | } else if (PDU->command == SNMP_PDU_GETNEXT) { |
571 | oid *NextOidName = NULL; | |
572 | int NextOidNameLen = 0; | |
b644367b | 573 | |
dba79ac5 | 574 | ParseFn = snmpTreeNext(PDU->variables->name, PDU->variables->name_length, |
c68e9c6b | 575 | &(NextOidName), (snint *) & NextOidNameLen); |
b644367b | 576 | |
577 | if (ParseFn == NULL) { | |
578 | Answer->errstat = SNMP_ERR_NOSUCHNAME; | |
dba79ac5 | 579 | debug(49, 5) ("snmpAgentResponse: No such oid: "); |
580 | snmpDebugOid(5, PDU->variables->name, PDU->variables->name_length); | |
581 | } else { | |
582 | xfree(PDU->variables->name); | |
583 | PDU->variables->name = NextOidName; | |
584 | PDU->variables->name_length = NextOidNameLen; | |
c68e9c6b | 585 | VarNew = (*ParseFn) (PDU->variables, (snint *) & Answer->errstat); |
dba79ac5 | 586 | } |
b644367b | 587 | |
588 | /* Was there an error? */ | |
dba79ac5 | 589 | if (Answer->errstat != SNMP_ERR_NOERROR) { |
590 | Answer->errindex = 1; | |
591 | ||
592 | /* Just copy this variable */ | |
593 | Answer->variables = PDU->variables; | |
594 | PDU->variables = NULL; | |
595 | } else { | |
596 | Answer->variables = VarNew; | |
b644367b | 597 | } |
dba79ac5 | 598 | |
c68e9c6b | 599 | } else { |
600 | snmp_free_pdu(Answer); | |
601 | Answer = NULL; | |
b644367b | 602 | } |
dba79ac5 | 603 | } |
604 | return (Answer); | |
605 | } | |
b644367b | 606 | |
dba79ac5 | 607 | oid_ParseFn * |
608 | snmpTreeNext(oid * Current, snint CurrentLen, oid ** Next, snint * NextLen) | |
609 | { | |
610 | oid_ParseFn *Fn = NULL; | |
611 | mib_tree_entry *mibTreeEntry = NULL, *new_oid = NULL; | |
612 | int count = 0; | |
613 | ||
614 | debug(49, 5) ("snmpTreeNext: Called\n"); | |
615 | ||
616 | debug(49, 6) ("snmpTreeNext: Current : \n"); | |
617 | snmpDebugOid(6, Current, CurrentLen); | |
b644367b | 618 | |
dba79ac5 | 619 | mibTreeEntry = mib_tree_head; |
620 | if (Current[count] == mibTreeEntry->name[count]) { | |
621 | count++; | |
622 | while ((mibTreeEntry) && (count < CurrentLen)) { | |
c68e9c6b | 623 | mibTreeEntry = snmpTreeEntry(Current[count], count, mibTreeEntry); |
dba79ac5 | 624 | count++; |
b644367b | 625 | } |
dba79ac5 | 626 | debug(49, 5) ("snmpTreeNext: Past first\n"); |
627 | ||
628 | if (mibTreeEntry->parsefunction) { | |
c68e9c6b | 629 | while (!new_oid) { |
630 | new_oid = snmpTreeEntry(Current[count] + 1, count, mibTreeEntry->parent); | |
631 | if (!new_oid) { | |
dba79ac5 | 632 | mibTreeEntry = mibTreeEntry->parent; |
633 | count--; | |
634 | } | |
635 | } | |
c68e9c6b | 636 | } |
dba79ac5 | 637 | debug(49, 5) ("snmpTreeNext: Past Second\n"); |
b644367b | 638 | |
dba79ac5 | 639 | if ((!mibTreeEntry->parsefunction) && (mibTreeEntry)) { |
640 | while (!mibTreeEntry->parsefunction) { | |
c68e9c6b | 641 | mibTreeEntry = snmpTreeEntry(1, count, mibTreeEntry); |
dba79ac5 | 642 | count++; |
643 | } | |
644 | } | |
645 | debug(49, 5) ("snmpTreeNext: Past Third\n"); | |
646 | } | |
c68e9c6b | 647 | if (mibTreeEntry) { |
648 | *Next = snmpOidDup(mibTreeEntry->name, mibTreeEntry->len); | |
649 | *NextLen = mibTreeEntry->len; | |
dba79ac5 | 650 | Fn = mibTreeEntry->parsefunction; |
651 | } | |
652 | debug(49, 5) ("snmpTreeNext: return\n"); | |
653 | return (Fn); | |
43d4303e | 654 | } |
655 | ||
dba79ac5 | 656 | mib_tree_entry * |
657 | snmpTreeEntry(oid entry, snint len, mib_tree_entry * current) | |
43d4303e | 658 | { |
dba79ac5 | 659 | mib_tree_entry *next = NULL; |
660 | int count = 0; | |
665bc266 | 661 | |
dba79ac5 | 662 | debug(49, 5) ("snmpTreeEntry: Called\n"); |
665bc266 | 663 | |
c68e9c6b | 664 | debug(49, 6) ("snmpTreeEntry: Oid: %d, Len: %d, Current : \n", entry, len); |
dba79ac5 | 665 | snmpDebugOid(6, current->name, current->len); |
43d4303e | 666 | |
dba79ac5 | 667 | while ((!next) && (count < current->children)) { |
668 | debug(49, 6) ("snmpTreeEntry: While loop count: %d, children: %d \n", count, current->children); | |
669 | snmpDebugOid(6, current->leaves[count]->name, current->leaves[count]->len); | |
670 | if (current->leaves[count]->name[len] == entry) { | |
671 | next = current->leaves[count]; | |
672 | } | |
673 | count++; | |
43d4303e | 674 | } |
c68e9c6b | 675 | if (next) { |
676 | debug(49, 6) ("snmpTreeEntry: Returned : \n"); | |
677 | snmpDebugOid(6, next->name, next->len); | |
dba79ac5 | 678 | } |
679 | return (next); | |
680 | } | |
43d4303e | 681 | |
dba79ac5 | 682 | /* |
c68e9c6b | 683 | * Send the UDP reply. |
684 | */ | |
dba79ac5 | 685 | void |
686 | snmpUdpSend(int fd, const struct sockaddr_in *to, void *msg, int len) | |
687 | { | |
688 | snmpUdpData *data = xcalloc(1, sizeof(snmpUdpData)); | |
689 | debug(49, 5) ("snmpUdpSend: Queueing response for %s\n", | |
c68e9c6b | 690 | inet_ntoa(to->sin_addr)); |
dba79ac5 | 691 | data->address = *to; |
692 | data->msg = msg; | |
693 | data->len = len; | |
694 | snmpAppendUdp(data); | |
695 | commSetSelect(fd, COMM_SELECT_WRITE, snmpUdpReply, snmpUdpHead, 0); | |
43d4303e | 696 | |
dba79ac5 | 697 | } |
43d4303e | 698 | |
dba79ac5 | 699 | void |
700 | snmpUdpReply(int fd, void *data) | |
701 | { | |
702 | snmpUdpData *queue = data; | |
703 | int x; | |
704 | /* Disable handler, in case of errors. */ | |
705 | commSetSelect(fd, COMM_SELECT_WRITE, NULL, NULL, 0); | |
706 | while ((queue = snmpUdpHead) != NULL) { | |
c68e9c6b | 707 | debug(49, 5) ("snmpUdpReply: FD %d sending %d bytes to %s port %d\n", |
708 | fd, | |
709 | queue->len, | |
710 | inet_ntoa(queue->address.sin_addr), | |
711 | ntohs(queue->address.sin_port)); | |
712 | x = comm_udp_sendto(fd, | |
713 | &queue->address, | |
714 | sizeof(struct sockaddr_in), | |
715 | queue->msg, | |
716 | queue->len); | |
717 | if (x < 0) { | |
718 | if (ignoreErrno(errno)) | |
719 | break; /* don't de-queue */ | |
720 | } | |
721 | snmpUdpHead = queue->next; | |
722 | debug(49, 3) ("snmpUdpReply: freeing %p\n", queue->msg); | |
723 | safe_free(queue->msg); | |
724 | debug(49, 3) ("snmpUdpReply: freeing %p\n", queue); | |
725 | safe_free(queue); | |
dba79ac5 | 726 | } |
727 | /* Reinstate handler if needed */ | |
728 | if (snmpUdpHead) { | |
c68e9c6b | 729 | commSetSelect(fd, COMM_SELECT_WRITE, snmpUdpReply, snmpUdpHead, 0); |
dba79ac5 | 730 | } |
43d4303e | 731 | } |
732 | ||
dba79ac5 | 733 | void |
734 | snmpAppendUdp(snmpUdpData * item) | |
43d4303e | 735 | { |
dba79ac5 | 736 | item->next = NULL; |
737 | if (snmpUdpHead == NULL) { | |
c68e9c6b | 738 | snmpUdpHead = item; |
739 | snmpUdpTail = item; | |
dba79ac5 | 740 | } else if (snmpUdpTail == snmpUdpHead) { |
c68e9c6b | 741 | snmpUdpTail = item; |
742 | snmpUdpHead->next = item; | |
dba79ac5 | 743 | } else { |
c68e9c6b | 744 | snmpUdpTail->next = item; |
745 | snmpUdpTail = item; | |
43d4303e | 746 | } |
747 | ||
dba79ac5 | 748 | } |
43d4303e | 749 | |
dba79ac5 | 750 | /* |
c68e9c6b | 751 | * Utility functions |
752 | */ | |
43d4303e | 753 | |
dba79ac5 | 754 | /* |
c68e9c6b | 755 | * Tree utility functions. |
756 | */ | |
43d4303e | 757 | |
dba79ac5 | 758 | /* |
c68e9c6b | 759 | * Adds a node to the MIB tree structure and adds the appropriate children |
760 | */ | |
761 | mib_tree_entry * | |
762 | snmpAddNode(oid * name, int len, oid_ParseFn * parsefunction, int children,...) | |
dba79ac5 | 763 | { |
c68e9c6b | 764 | va_list args; |
765 | int loop; | |
766 | mib_tree_entry *entry = NULL; | |
767 | ||
768 | debug(49, 6) ("snmpAddNode: Children : %d, Oid : \n", children); | |
769 | snmpDebugOid(6, name, len); | |
770 | ||
771 | va_start(args, children); | |
772 | entry = xmalloc(sizeof(mib_tree_entry)); | |
773 | entry->name = snmpOidDup(name, len); | |
774 | entry->len = len; | |
775 | entry->parsefunction = parsefunction; | |
776 | entry->children = children; | |
777 | ||
778 | if (children > 0) { | |
779 | entry->leaves = xmalloc(sizeof(mib_tree_entry *) * children); | |
780 | for (loop = 0; loop < children; loop++) { | |
781 | entry->leaves[loop] = va_arg(args, mib_tree_entry *); | |
782 | entry->leaves[loop]->parent = entry; | |
783 | } | |
784 | } | |
785 | return (entry); | |
dba79ac5 | 786 | } |
787 | /* End of tree utility functions */ | |
43d4303e | 788 | |
dba79ac5 | 789 | /* |
c68e9c6b | 790 | * Returns the list of parameters in an oid[] |
791 | */ | |
792 | oid * | |
793 | snmpCreateOid(int length,...) | |
dba79ac5 | 794 | { |
c68e9c6b | 795 | va_list args; |
796 | oid *new_oid; | |
797 | int loop; | |
798 | ||
799 | va_start(args, length); | |
800 | new_oid = xmalloc(sizeof(oid) * length); | |
801 | ||
802 | if (length > 0) { | |
803 | for (loop = 0; loop < length; loop++) { | |
804 | new_oid[loop] = va_arg(args, int); | |
805 | } | |
806 | } | |
807 | return (new_oid); | |
43d4303e | 808 | } |
809 | ||
dba79ac5 | 810 | /* |
c68e9c6b | 811 | * Allocate space for, and copy, an OID. Returns new oid, or NULL. |
43d4303e | 812 | */ |
813 | oid * | |
dba79ac5 | 814 | snmpOidDup(oid * A, snint ALen) |
43d4303e | 815 | { |
816 | oid *Ans; | |
c68e9c6b | 817 | |
818 | Ans = (oid *) xmalloc(sizeof(oid) * ALen); | |
43d4303e | 819 | if (Ans) |
c68e9c6b | 820 | memcpy(Ans, A, (sizeof(oid) * ALen)); |
43d4303e | 821 | return (Ans); |
822 | } | |
823 | ||
dba79ac5 | 824 | /* |
c68e9c6b | 825 | * Debug calls, prints out the OID for debugging purposes. |
826 | */ | |
dba79ac5 | 827 | void |
828 | snmpDebugOid(int lvl, oid * Name, snint Len) | |
c68e9c6b | 829 | { |
dba79ac5 | 830 | char mbuf[16], objid[1024]; |
831 | int x; | |
832 | objid[0] = '\0'; | |
43d4303e | 833 | |
dba79ac5 | 834 | for (x = 0; x < Len; x++) { |
c68e9c6b | 835 | snprintf(mbuf, sizeof(mbuf), ".%u", (unsigned int) Name[x]); |
836 | strncat(objid, mbuf, sizeof(objid)); | |
43d4303e | 837 | } |
c68e9c6b | 838 | |
dba79ac5 | 839 | debug(49, lvl) (" oid = %s\n", objid); |
43d4303e | 840 | } |
b644367b | 841 | |
c68e9c6b | 842 | static void |
dba79ac5 | 843 | snmpSnmplibDebug(int lvl, char *buf) |
c68e9c6b | 844 | { |
dba79ac5 | 845 | debug(49, lvl) ("%s", buf); |
c68e9c6b | 846 | } |