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Commit | Line | Data |
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43c02e7b VB |
1 | /* |
2 | * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx> | |
3 | * | |
51434125 | 4 | * Permission to use, copy, modify, and/or distribute this software for any |
43c02e7b VB |
5 | * purpose with or without fee is hereby granted, provided that the above |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #include "lldpd.h" | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <unistd.h> | |
21 | #include <errno.h> | |
22 | #include <signal.h> | |
23 | #include <sys/stat.h> | |
24 | #include <fcntl.h> | |
43c02e7b | 25 | #include <time.h> |
a2993d83 | 26 | #include <libgen.h> |
e6b36c87 | 27 | #include <assert.h> |
43c02e7b VB |
28 | #include <sys/utsname.h> |
29 | #include <sys/types.h> | |
c036b15d | 30 | #include <sys/wait.h> |
43c02e7b VB |
31 | #include <sys/socket.h> |
32 | #include <sys/select.h> | |
33 | #include <sys/time.h> | |
34 | #include <sys/ioctl.h> | |
35 | #include <arpa/inet.h> | |
43c02e7b | 36 | #include <net/if_arp.h> |
43c02e7b | 37 | |
bc598c23 VB |
38 | #if LLDPD_FD_SETSIZE != FD_SETSIZE |
39 | # warning "FD_SETSIZE is set to an inconsistent value." | |
40 | #endif | |
41 | ||
43c02e7b VB |
42 | #ifdef USE_SNMP |
43 | #include <net-snmp/net-snmp-config.h> | |
44 | #include <net-snmp/net-snmp-includes.h> | |
45 | #include <net-snmp/agent/net-snmp-agent-includes.h> | |
46 | #include <net-snmp/agent/snmp_vars.h> | |
47 | #endif /* USE_SNMP */ | |
48 | ||
8888d191 | 49 | static void usage(void); |
43c02e7b | 50 | |
8888d191 | 51 | static struct protocol protos[] = |
43c02e7b | 52 | { |
0c877af0 | 53 | { LLDPD_MODE_LLDP, 1, "LLDP", 'l', lldp_send, lldp_decode, NULL, |
f2dcb180 | 54 | LLDP_MULTICAST_ADDR }, |
4bad1937 | 55 | #ifdef ENABLE_CDP |
43c02e7b | 56 | { LLDPD_MODE_CDPV1, 0, "CDPv1", 'c', cdpv1_send, cdp_decode, cdpv1_guess, |
f2dcb180 | 57 | CDP_MULTICAST_ADDR }, |
43c02e7b | 58 | { LLDPD_MODE_CDPV2, 0, "CDPv2", 'c', cdpv2_send, cdp_decode, cdpv2_guess, |
f2dcb180 | 59 | CDP_MULTICAST_ADDR }, |
4bad1937 VB |
60 | #endif |
61 | #ifdef ENABLE_SONMP | |
43c02e7b | 62 | { LLDPD_MODE_SONMP, 0, "SONMP", 's', sonmp_send, sonmp_decode, NULL, |
f2dcb180 | 63 | SONMP_MULTICAST_ADDR }, |
4bad1937 VB |
64 | #endif |
65 | #ifdef ENABLE_EDP | |
43c02e7b | 66 | { LLDPD_MODE_EDP, 0, "EDP", 'e', edp_send, edp_decode, NULL, |
f2dcb180 | 67 | EDP_MULTICAST_ADDR }, |
4bad1937 VB |
68 | #endif |
69 | #ifdef ENABLE_FDP | |
031118c4 | 70 | { LLDPD_MODE_FDP, 0, "FDP", 'f', fdp_send, cdp_decode, NULL, |
f2dcb180 | 71 | FDP_MULTICAST_ADDR }, |
4bad1937 | 72 | #endif |
43c02e7b | 73 | { 0, 0, "any", ' ', NULL, NULL, NULL, |
f2dcb180 | 74 | {0,0,0,0,0,0} } |
43c02e7b VB |
75 | }; |
76 | ||
8888d191 | 77 | static char **saved_argv; |
6bb9c4e0 VB |
78 | #ifdef HAVE___PROGNAME |
79 | extern const char *__progname; | |
80 | #else | |
81 | # define __progname "lldpd" | |
82 | #endif | |
43c02e7b | 83 | |
8888d191 | 84 | static void |
43c02e7b VB |
85 | usage(void) |
86 | { | |
4593c0dc VB |
87 | fprintf(stderr, "Usage: %s [OPTIONS ...]\n", __progname); |
88 | fprintf(stderr, "Version: %s\n", PACKAGE_STRING); | |
53132616 VB |
89 | |
90 | fprintf(stderr, "\n"); | |
91 | ||
92 | fprintf(stderr, "-d Do not daemonize.\n"); | |
5e64a80e | 93 | fprintf(stderr, "-r Receive-only mode\n"); |
53132616 VB |
94 | fprintf(stderr, "-i Disable LLDP-MED inventory TLV transmission.\n"); |
95 | fprintf(stderr, "-k Disable advertising of kernel release, version, machine.\n"); | |
fde7a7ce | 96 | fprintf(stderr, "-S descr Override the default system description.\n"); |
d4afb919 | 97 | fprintf(stderr, "-P name Override the default hardware platform.\n"); |
e6b36c87 JV |
98 | fprintf(stderr, "-4 IP Specify the IPv4 management address of this system.\n"); |
99 | fprintf(stderr, "-m IP Same as '-4', for backward compatibility.\n"); | |
100 | fprintf(stderr, "-6 IP Specify the IPv6 management address of this system.\n"); | |
42b39485 | 101 | fprintf(stderr, "-H mode Specify the behaviour when detecting multiple neighbors.\n"); |
fbda1f9f | 102 | fprintf(stderr, "-I iface Limit interfaces to use.\n"); |
8347587d | 103 | #ifdef ENABLE_LLDPMED |
53132616 VB |
104 | fprintf(stderr, "-M class Enable emission of LLDP-MED frame. 'class' should be one of:\n"); |
105 | fprintf(stderr, " 1 Generic Endpoint (Class I)\n"); | |
106 | fprintf(stderr, " 2 Media Endpoint (Class II)\n"); | |
107 | fprintf(stderr, " 3 Communication Device Endpoints (Class III)\n"); | |
108 | fprintf(stderr, " 4 Network Connectivity Device\n"); | |
8347587d VB |
109 | #endif |
110 | #ifdef USE_SNMP | |
53132616 | 111 | fprintf(stderr, "-x Enable SNMP subagent.\n"); |
53132616 VB |
112 | #endif |
113 | fprintf(stderr, "\n"); | |
114 | ||
8347587d VB |
115 | #if defined ENABLE_CDP || defined ENABLE_EDP || defined ENABLE_FDP || defined ENABLE_SONMP |
116 | fprintf(stderr, "Additional protocol support.\n"); | |
117 | #ifdef ENABLE_CDP | |
53132616 | 118 | fprintf(stderr, "-c Enable the support of CDP protocol. (Cisco)\n"); |
8347587d VB |
119 | #endif |
120 | #ifdef ENABLE_EDP | |
53132616 | 121 | fprintf(stderr, "-e Enable the support of EDP protocol. (Extreme)\n"); |
8347587d VB |
122 | #endif |
123 | #ifdef ENABLE_FDP | |
53132616 | 124 | fprintf(stderr, "-f Enable the support of FDP protocol. (Foundry)\n"); |
8347587d VB |
125 | #endif |
126 | #ifdef ENABLE_SONMP | |
53132616 | 127 | fprintf(stderr, "-s Enable the support of SONMP protocol. (Nortel)\n"); |
8347587d | 128 | #endif |
53132616 VB |
129 | |
130 | fprintf(stderr, "\n"); | |
8347587d | 131 | #endif |
53132616 | 132 | |
e809a587 | 133 | fprintf(stderr, "see manual page lldpd(8) for more information\n"); |
43c02e7b VB |
134 | exit(1); |
135 | } | |
136 | ||
6e75df87 | 137 | struct lldpd_hardware * |
44002d66 | 138 | lldpd_get_hardware(struct lldpd *cfg, char *name, int index, struct lldpd_ops *ops) |
43c02e7b | 139 | { |
6e75df87 VB |
140 | struct lldpd_hardware *hardware; |
141 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
849954d7 | 142 | if ((strcmp(hardware->h_ifname, name) == 0) && |
44002d66 | 143 | (hardware->h_ifindex == index) && |
849954d7 | 144 | ((!ops) || (ops == hardware->h_ops))) |
6e75df87 | 145 | break; |
43c02e7b | 146 | } |
6e75df87 | 147 | return hardware; |
43c02e7b VB |
148 | } |
149 | ||
6e75df87 VB |
150 | struct lldpd_hardware * |
151 | lldpd_alloc_hardware(struct lldpd *cfg, char *name) | |
43c02e7b | 152 | { |
6e75df87 | 153 | struct lldpd_hardware *hardware; |
43c02e7b | 154 | |
6e75df87 VB |
155 | if ((hardware = (struct lldpd_hardware *) |
156 | calloc(1, sizeof(struct lldpd_hardware))) == NULL) | |
157 | return NULL; | |
43c02e7b | 158 | |
6e75df87 VB |
159 | strlcpy(hardware->h_ifname, name, sizeof(hardware->h_ifname)); |
160 | hardware->h_lport.p_chassis = LOCAL_CHASSIS(cfg); | |
9df5ec3d | 161 | hardware->h_lport.p_chassis->c_refcount++; |
6e75df87 | 162 | TAILQ_INIT(&hardware->h_rports); |
43c02e7b | 163 | |
6e75df87 VB |
164 | #ifdef ENABLE_LLDPMED |
165 | if (LOCAL_CHASSIS(cfg)->c_med_cap_available) { | |
166 | hardware->h_lport.p_med_cap_enabled = LLDPMED_CAP_CAP; | |
167 | if (!cfg->g_noinventory) | |
168 | hardware->h_lport.p_med_cap_enabled |= LLDPMED_CAP_IV; | |
169 | } | |
170 | #endif | |
171 | #ifdef ENABLE_DOT1 | |
172 | TAILQ_INIT(&hardware->h_lport.p_vlans); | |
9757bfbc SK |
173 | TAILQ_INIT(&hardware->h_lport.p_ppvids); |
174 | TAILQ_INIT(&hardware->h_lport.p_pids); | |
6e75df87 VB |
175 | #endif |
176 | return hardware; | |
43c02e7b VB |
177 | } |
178 | ||
a1347cd8 | 179 | #ifdef ENABLE_DOT1 |
43c02e7b VB |
180 | void |
181 | lldpd_vlan_cleanup(struct lldpd_port *port) | |
182 | { | |
183 | struct lldpd_vlan *vlan, *vlan_next; | |
184 | for (vlan = TAILQ_FIRST(&port->p_vlans); | |
185 | vlan != NULL; | |
186 | vlan = vlan_next) { | |
187 | free(vlan->v_name); | |
188 | vlan_next = TAILQ_NEXT(vlan, v_entries); | |
189 | TAILQ_REMOVE(&port->p_vlans, vlan, v_entries); | |
190 | free(vlan); | |
191 | } | |
192 | } | |
9757bfbc SK |
193 | |
194 | void | |
195 | lldpd_ppvid_cleanup(struct lldpd_port *port) | |
196 | { | |
197 | struct lldpd_ppvid *ppvid, *ppvid_next; | |
198 | for (ppvid = TAILQ_FIRST(&port->p_ppvids); | |
199 | ppvid != NULL; | |
200 | ppvid = ppvid_next) { | |
201 | ppvid_next = TAILQ_NEXT(ppvid, p_entries); | |
202 | TAILQ_REMOVE(&port->p_ppvids, ppvid, p_entries); | |
203 | free(ppvid); | |
204 | } | |
205 | } | |
206 | ||
207 | void | |
208 | lldpd_pi_cleanup(struct lldpd_port *port) | |
209 | { | |
210 | struct lldpd_pi *pi, *pi_next; | |
211 | for (pi = TAILQ_FIRST(&port->p_pids); | |
212 | pi != NULL; | |
213 | pi = pi_next) { | |
214 | free(pi->p_pi); | |
215 | pi_next = TAILQ_NEXT(pi, p_entries); | |
216 | TAILQ_REMOVE(&port->p_pids, pi, p_entries); | |
217 | free(pi); | |
218 | } | |
219 | } | |
a1347cd8 | 220 | #endif |
43c02e7b | 221 | |
a0edeaf8 | 222 | /* If `all' is true, clear all information, including information that |
4e624dc2 | 223 | are not refreshed periodically. Port should be freed manually. */ |
43c02e7b | 224 | void |
9898ac07 | 225 | lldpd_port_cleanup(struct lldpd *cfg, struct lldpd_port *port, int all) |
43c02e7b | 226 | { |
740593ff VB |
227 | #ifdef ENABLE_LLDPMED |
228 | int i; | |
a0edeaf8 VB |
229 | if (all) |
230 | for (i=0; i < LLDPMED_LOCFORMAT_LAST; i++) | |
231 | free(port->p_med_location[i].data); | |
740593ff | 232 | #endif |
a1347cd8 | 233 | #ifdef ENABLE_DOT1 |
43c02e7b | 234 | lldpd_vlan_cleanup(port); |
9757bfbc SK |
235 | lldpd_ppvid_cleanup(port); |
236 | lldpd_pi_cleanup(port); | |
a1347cd8 | 237 | #endif |
43c02e7b VB |
238 | free(port->p_id); |
239 | free(port->p_descr); | |
77507b69 VB |
240 | if (all) { |
241 | free(port->p_lastframe); | |
9898ac07 | 242 | if (port->p_chassis) { /* chassis may not have been attributed, yet */ |
77507b69 | 243 | port->p_chassis->c_refcount--; |
9898ac07 V |
244 | port->p_chassis = NULL; |
245 | } | |
77507b69 | 246 | } |
43c02e7b VB |
247 | } |
248 | ||
e6b36c87 JV |
249 | struct lldpd_mgmt * |
250 | lldpd_alloc_mgmt(int family, void *addrptr, size_t addrsize, u_int32_t iface) | |
251 | { | |
252 | struct lldpd_mgmt *mgmt; | |
253 | ||
254 | if (family <= LLDPD_AF_UNSPEC || family >= LLDPD_AF_LAST) { | |
255 | errno = EAFNOSUPPORT; | |
256 | return NULL; | |
257 | } | |
258 | if (addrsize > LLDPD_MGMT_MAXADDRSIZE) { | |
259 | errno = EOVERFLOW; | |
260 | return NULL; | |
261 | } | |
262 | mgmt = calloc(1, sizeof(struct lldpd_mgmt)); | |
263 | if (mgmt == NULL) { | |
264 | errno = ENOMEM; | |
265 | return NULL; | |
266 | } | |
267 | mgmt->m_family = family; | |
268 | assert(addrsize <= LLDPD_MGMT_MAXADDRSIZE); | |
269 | memcpy(&mgmt->m_addr, addrptr, addrsize); | |
270 | mgmt->m_addrsize = addrsize; | |
271 | mgmt->m_iface = iface; | |
272 | return mgmt; | |
273 | } | |
274 | ||
43c02e7b | 275 | void |
77507b69 | 276 | lldpd_chassis_cleanup(struct lldpd_chassis *chassis, int all) |
43c02e7b | 277 | { |
89840df0 VB |
278 | #ifdef ENABLE_LLDPMED |
279 | free(chassis->c_med_hw); | |
517d524b | 280 | free(chassis->c_med_sw); |
89840df0 VB |
281 | free(chassis->c_med_fw); |
282 | free(chassis->c_med_sn); | |
283 | free(chassis->c_med_manuf); | |
284 | free(chassis->c_med_model); | |
285 | free(chassis->c_med_asset); | |
286 | #endif | |
43c02e7b VB |
287 | free(chassis->c_id); |
288 | free(chassis->c_name); | |
289 | free(chassis->c_descr); | |
77507b69 VB |
290 | if (all) |
291 | free(chassis); | |
43c02e7b VB |
292 | } |
293 | ||
294 | void | |
77507b69 | 295 | lldpd_remote_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware, int all) |
43c02e7b | 296 | { |
77507b69 VB |
297 | struct lldpd_port *port, *port_next; |
298 | int del; | |
299 | for (port = TAILQ_FIRST(&hardware->h_rports); | |
300 | port != NULL; | |
301 | port = port_next) { | |
302 | port_next = TAILQ_NEXT(port, p_entries); | |
303 | del = all; | |
304 | if (!del && | |
305 | (time(NULL) - port->p_lastupdate > port->p_chassis->c_ttl)) { | |
306 | hardware->h_rx_ageout_cnt++; | |
307 | del = 1; | |
308 | } | |
309 | if (del) { | |
310 | TAILQ_REMOVE(&hardware->h_rports, port, p_entries); | |
9898ac07 | 311 | lldpd_port_cleanup(cfg, port, 1); |
4e624dc2 | 312 | free(port); |
77507b69 | 313 | } |
43c02e7b | 314 | } |
43c02e7b VB |
315 | } |
316 | ||
d9be8ea0 | 317 | void |
6e75df87 | 318 | lldpd_hardware_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware) |
d9be8ea0 | 319 | { |
6e75df87 | 320 | int i; |
9898ac07 | 321 | lldpd_port_cleanup(cfg, &hardware->h_lport, 1); |
6e75df87 VB |
322 | /* If we have a dedicated cleanup function, use it. Otherwise, |
323 | we just free the hardware-dependent data and close all FD | |
324 | in h_recvfds and h_sendfd. */ | |
325 | if (hardware->h_ops->cleanup) | |
326 | hardware->h_ops->cleanup(cfg, hardware); | |
327 | else { | |
328 | free(hardware->h_data); | |
bc598c23 | 329 | for (i=0; i < LLDPD_FD_SETSIZE; i++) |
6e75df87 VB |
330 | if (FD_ISSET(i, &hardware->h_recvfds)) |
331 | close(i); | |
332 | if (hardware->h_sendfd) close(hardware->h_sendfd); | |
333 | } | |
d9be8ea0 VB |
334 | free(hardware); |
335 | } | |
336 | ||
6e75df87 | 337 | static void |
43c02e7b VB |
338 | lldpd_cleanup(struct lldpd *cfg) |
339 | { | |
340 | struct lldpd_hardware *hardware, *hardware_next; | |
aadc9936 | 341 | struct lldpd_chassis *chassis, *chassis_next; |
43c02e7b VB |
342 | |
343 | for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL; | |
344 | hardware = hardware_next) { | |
345 | hardware_next = TAILQ_NEXT(hardware, h_entries); | |
6e75df87 | 346 | if (!hardware->h_flags) { |
43c02e7b | 347 | TAILQ_REMOVE(&cfg->g_hardware, hardware, h_entries); |
77507b69 | 348 | lldpd_remote_cleanup(cfg, hardware, 1); |
6e75df87 | 349 | lldpd_hardware_cleanup(cfg, hardware); |
77507b69 VB |
350 | } else |
351 | lldpd_remote_cleanup(cfg, hardware, 0); | |
43c02e7b | 352 | } |
aadc9936 VB |
353 | |
354 | for (chassis = TAILQ_FIRST(&cfg->g_chassis); chassis; | |
355 | chassis = chassis_next) { | |
356 | chassis_next = TAILQ_NEXT(chassis, c_entries); | |
357 | if (chassis->c_refcount == 0) { | |
358 | TAILQ_REMOVE(&cfg->g_chassis, chassis, c_entries); | |
359 | lldpd_chassis_cleanup(chassis, 1); | |
360 | } | |
361 | } | |
43c02e7b VB |
362 | } |
363 | ||
566c635d VB |
364 | /* Update chassis `ochassis' with values from `chassis'. */ |
365 | static void | |
366 | lldpd_update_chassis(struct lldpd_chassis *ochassis, | |
367 | const struct lldpd_chassis *chassis) { | |
368 | TAILQ_ENTRY(lldpd_chassis) entries; | |
369 | /* We want to keep refcount, index and list stuff from the current | |
370 | * chassis */ | |
371 | int refcount = ochassis->c_refcount; | |
372 | int index = ochassis->c_index; | |
373 | memcpy(&entries, &ochassis->c_entries, | |
374 | sizeof(entries)); | |
375 | /* Make the copy */ | |
376 | lldpd_chassis_cleanup(ochassis, 0); | |
377 | memcpy(ochassis, chassis, sizeof(struct lldpd_chassis)); | |
378 | /* Restore saved values */ | |
379 | ochassis->c_refcount = refcount; | |
380 | ochassis->c_index = index; | |
381 | memcpy(&ochassis->c_entries, &entries, sizeof(entries)); | |
382 | } | |
383 | ||
8888d191 | 384 | static int |
43c02e7b VB |
385 | lldpd_guess_type(struct lldpd *cfg, char *frame, int s) |
386 | { | |
387 | int i; | |
388 | if (s < ETH_ALEN) | |
389 | return -1; | |
390 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
391 | if (!cfg->g_protocols[i].enabled) | |
392 | continue; | |
393 | if (cfg->g_protocols[i].guess == NULL) { | |
394 | if (memcmp(frame, cfg->g_protocols[i].mac, ETH_ALEN) == 0) | |
395 | return cfg->g_protocols[i].mode; | |
396 | } else { | |
397 | if (cfg->g_protocols[i].guess(frame, s)) | |
398 | return cfg->g_protocols[i].mode; | |
399 | } | |
400 | } | |
401 | return -1; | |
402 | } | |
403 | ||
8888d191 | 404 | static void |
43c02e7b | 405 | lldpd_decode(struct lldpd *cfg, char *frame, int s, |
0bc32943 | 406 | struct lldpd_hardware *hardware) |
43c02e7b | 407 | { |
77507b69 VB |
408 | int i, result; |
409 | struct lldpd_chassis *chassis, *ochassis = NULL; | |
410 | struct lldpd_port *port, *oport = NULL; | |
43c02e7b VB |
411 | int guess = LLDPD_MODE_LLDP; |
412 | ||
49697208 VB |
413 | if (s < sizeof(struct ethhdr) + 4) |
414 | /* Too short, just discard it */ | |
50a89ca7 | 415 | return; |
49697208 VB |
416 | /* Decapsulate VLAN frames */ |
417 | if (((struct ethhdr*)frame)->h_proto == htons(ETHERTYPE_VLAN)) { | |
418 | /* VLAN decapsulation means to shift 4 bytes left the frame from | |
419 | * offset 2*ETH_ALEN */ | |
420 | memmove(frame + 2*ETH_ALEN, frame + 2*ETH_ALEN + 4, s - 2*ETH_ALEN); | |
421 | s -= 4; | |
422 | } | |
50a89ca7 | 423 | |
77507b69 VB |
424 | TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) { |
425 | if ((oport->p_lastframe != NULL) && | |
426 | (oport->p_lastframe->size == s) && | |
427 | (memcmp(oport->p_lastframe->frame, frame, s) == 0)) { | |
428 | /* Already received the same frame */ | |
429 | oport->p_lastupdate = time(NULL); | |
430 | return; | |
431 | } | |
43c02e7b VB |
432 | } |
433 | ||
f2dcb180 VB |
434 | guess = lldpd_guess_type(cfg, frame, s); |
435 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
436 | if (!cfg->g_protocols[i].enabled) | |
437 | continue; | |
438 | if (cfg->g_protocols[i].mode == guess) { | |
439 | if ((result = cfg->g_protocols[i].decode(cfg, frame, | |
440 | s, hardware, &chassis, &port)) == -1) | |
441 | return; | |
77507b69 VB |
442 | chassis->c_protocol = port->p_protocol = |
443 | cfg->g_protocols[i].mode; | |
f2dcb180 | 444 | break; |
43c02e7b | 445 | } |
f2dcb180 VB |
446 | } |
447 | if (cfg->g_protocols[i].mode == 0) { | |
ba5116b5 VB |
448 | LLOG_INFO("unable to guess frame type on %s", |
449 | hardware->h_ifname); | |
43c02e7b | 450 | return; |
f2dcb180 | 451 | } |
43c02e7b | 452 | |
77507b69 VB |
453 | /* Do we already have the same MSAP somewhere? */ |
454 | TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) { | |
455 | if ((port->p_protocol == oport->p_protocol) && | |
456 | (port->p_id_subtype == oport->p_id_subtype) && | |
457 | (port->p_id_len == oport->p_id_len) && | |
458 | (memcmp(port->p_id, oport->p_id, port->p_id_len) == 0) && | |
459 | (chassis->c_id_subtype == oport->p_chassis->c_id_subtype) && | |
460 | (chassis->c_id_len == oport->p_chassis->c_id_len) && | |
461 | (memcmp(chassis->c_id, oport->p_chassis->c_id, | |
462 | chassis->c_id_len) == 0)) { | |
463 | ochassis = oport->p_chassis; | |
464 | break; | |
465 | } | |
43c02e7b | 466 | } |
77507b69 VB |
467 | /* No, but do we already know the system? */ |
468 | if (!oport) { | |
469 | TAILQ_FOREACH(ochassis, &cfg->g_chassis, c_entries) { | |
470 | if ((chassis->c_protocol == ochassis->c_protocol) && | |
471 | (chassis->c_id_subtype == ochassis->c_id_subtype) && | |
472 | (chassis->c_id_len == ochassis->c_id_len) && | |
473 | (memcmp(chassis->c_id, ochassis->c_id, | |
474 | chassis->c_id_len) == 0)) | |
475 | break; | |
43c02e7b | 476 | } |
43c02e7b | 477 | } |
43c02e7b | 478 | |
77507b69 VB |
479 | if (oport) { |
480 | /* The port is known, remove it before adding it back */ | |
481 | TAILQ_REMOVE(&hardware->h_rports, oport, p_entries); | |
9898ac07 | 482 | lldpd_port_cleanup(cfg, oport, 1); |
4e624dc2 | 483 | free(oport); |
77507b69 VB |
484 | } |
485 | if (ochassis) { | |
16f910e1 | 486 | lldpd_update_chassis(ochassis, chassis); |
77507b69 VB |
487 | free(chassis); |
488 | chassis = ochassis; | |
489 | } else { | |
490 | /* Chassis not known, add it */ | |
491 | chassis->c_index = ++cfg->g_lastrid; | |
77507b69 VB |
492 | chassis->c_refcount = 0; |
493 | TAILQ_INSERT_TAIL(&cfg->g_chassis, chassis, c_entries); | |
f4c43902 VB |
494 | i = 0; TAILQ_FOREACH(ochassis, &cfg->g_chassis, c_entries) i++; |
495 | LLOG_DEBUG("Currently, we know %d different systems", i); | |
77507b69 VB |
496 | } |
497 | /* Add port */ | |
498 | port->p_lastchange = port->p_lastupdate = time(NULL); | |
499 | if ((port->p_lastframe = (struct lldpd_frame *)malloc(s + | |
500 | sizeof(int))) != NULL) { | |
501 | port->p_lastframe->size = s; | |
502 | memcpy(port->p_lastframe->frame, frame, s); | |
503 | } | |
504 | TAILQ_INSERT_TAIL(&hardware->h_rports, port, p_entries); | |
505 | port->p_chassis = chassis; | |
506 | port->p_chassis->c_refcount++; | |
9df5ec3d VB |
507 | /* Several cases are possible : |
508 | 1. chassis is new, its refcount was 0. It is now attached | |
509 | to this port, its refcount is 1. | |
510 | 2. chassis already exists and was attached to another | |
511 | port, we increase its refcount accordingly. | |
512 | 3. chassis already exists and was attached to the same | |
513 | port, its refcount was decreased with | |
514 | lldpd_port_cleanup() and is now increased again. | |
515 | ||
516 | In all cases, if the port already existed, it has been | |
517 | freed with lldpd_port_cleanup() and therefore, the refcount | |
518 | of the chassis that was attached to it is decreased. | |
519 | */ | |
42b39485 VB |
520 | i = 0; TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) |
521 | i++; | |
522 | LLOG_DEBUG("Currently, %s knows %d neighbors", | |
f4c43902 | 523 | hardware->h_ifname, i); |
43c02e7b VB |
524 | return; |
525 | } | |
526 | ||
c036b15d VB |
527 | /* Get the output of lsb_release -s -d. This is a slow function. It should be |
528 | called once. It return NULL if any problem happens. Otherwise, this is a | |
529 | statically allocated buffer. The result includes the trailing \n */ | |
530 | static char * | |
531 | lldpd_get_lsb_release() { | |
532 | static char release[1024]; | |
533 | char *const command[] = { "lsb_release", "-s", "-d", NULL }; | |
534 | int pid, status, devnull, count; | |
535 | int pipefd[2]; | |
536 | ||
537 | if (pipe(pipefd)) { | |
538 | LLOG_WARN("unable to get a pair of pipes"); | |
539 | return NULL; | |
540 | } | |
541 | ||
542 | if ((pid = fork()) < 0) { | |
543 | LLOG_WARN("unable to fork"); | |
544 | return NULL; | |
545 | } | |
546 | switch (pid) { | |
547 | case 0: | |
548 | /* Child, exec lsb_release */ | |
549 | close(pipefd[0]); | |
550 | if ((devnull = open("/dev/null", O_RDWR, 0)) != -1) { | |
551 | dup2(devnull, STDIN_FILENO); | |
552 | dup2(devnull, STDERR_FILENO); | |
553 | dup2(pipefd[1], STDOUT_FILENO); | |
554 | if (devnull > 2) close(devnull); | |
555 | if (pipefd[1] > 2) close(pipefd[1]); | |
556 | execvp("lsb_release", command); | |
557 | } | |
558 | exit(127); | |
559 | break; | |
560 | default: | |
561 | /* Father, read the output from the children */ | |
562 | close(pipefd[1]); | |
563 | count = 0; | |
564 | do { | |
565 | status = read(pipefd[0], release+count, sizeof(release)-count); | |
566 | if ((status == -1) && (errno == EINTR)) continue; | |
567 | if (status > 0) | |
568 | count += status; | |
569 | } while (count < sizeof(release) && (status > 0)); | |
570 | if (status < 0) { | |
571 | LLOG_WARN("unable to read from lsb_release"); | |
572 | close(pipefd[0]); | |
573 | waitpid(pid, &status, 0); | |
574 | return NULL; | |
575 | } | |
576 | close(pipefd[0]); | |
577 | if (count >= sizeof(release)) { | |
578 | LLOG_INFO("output of lsb_release is too large"); | |
579 | waitpid(pid, &status, 0); | |
580 | return NULL; | |
581 | } | |
582 | status = -1; | |
583 | if (waitpid(pid, &status, 0) != pid) | |
584 | return NULL; | |
585 | if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) { | |
586 | LLOG_INFO("lsb_release information not available"); | |
587 | return NULL; | |
588 | } | |
589 | if (!count) { | |
590 | LLOG_INFO("lsb_release returned an empty string"); | |
591 | return NULL; | |
592 | } | |
593 | release[count] = '\0'; | |
594 | return release; | |
595 | } | |
596 | /* Should not be here */ | |
597 | return NULL; | |
598 | } | |
599 | ||
ae87586a MT |
600 | /* Same like lldpd_get_lsb_release but reads /etc/os-release for PRETTY_NAME=. */ |
601 | static char * | |
602 | lldpd_get_os_release() { | |
603 | static char release[1024]; | |
9757bfbc SK |
604 | char line[1024]; |
605 | char *key, *val; | |
606 | char *ptr1 = release; | |
607 | char *ptr2 = release; | |
ae87586a MT |
608 | |
609 | FILE *fp = fopen("/etc/os-release", "r"); | |
610 | if (!fp) { | |
e02afca4 | 611 | LLOG_WARN("could not open /etc/os-release"); |
ae87586a MT |
612 | return NULL; |
613 | } | |
614 | ||
ae87586a MT |
615 | while ((fgets(line, 1024, fp) != NULL)) { |
616 | key = strtok(line, "="); | |
617 | val = strtok(NULL, "="); | |
618 | ||
619 | if (strncmp(key, "PRETTY_NAME", 1024) == 0) { | |
620 | strncpy(release, val, 1024); | |
621 | break; | |
622 | } | |
623 | } | |
624 | fclose(fp); | |
625 | ||
626 | /* Remove trailing newline and all " in the string. */ | |
ae87586a MT |
627 | while (*ptr1 != 0) { |
628 | if ((*ptr1 == '"') || (*ptr1 == '\n')) { | |
629 | ++ptr1; | |
630 | } else { | |
631 | *ptr2++ = *ptr1++; | |
632 | } | |
633 | } | |
634 | *ptr2 = 0; | |
635 | ||
636 | return release; | |
637 | } | |
638 | ||
77d7090e VB |
639 | int |
640 | lldpd_callback_add(struct lldpd *cfg, int fd, void(*fn)(CALLBACK_SIG), void *data) | |
641 | { | |
642 | struct lldpd_callback *callback; | |
643 | if ((callback = (struct lldpd_callback *) | |
644 | malloc(sizeof(struct lldpd_callback))) == NULL) | |
645 | return -1; | |
646 | callback->fd = fd; | |
647 | callback->function = fn; | |
648 | callback->data = data; | |
649 | TAILQ_INSERT_TAIL(&cfg->g_callbacks, callback, next); | |
650 | return 0; | |
651 | } | |
652 | ||
653 | void | |
654 | lldpd_callback_del(struct lldpd *cfg, int fd, void(*fn)(CALLBACK_SIG)) | |
655 | { | |
656 | struct lldpd_callback *callback, *callback_next; | |
657 | for (callback = TAILQ_FIRST(&cfg->g_callbacks); | |
658 | callback; | |
659 | callback = callback_next) { | |
660 | callback_next = TAILQ_NEXT(callback, next); | |
661 | if ((callback->fd == fd) && | |
662 | (callback->function = fn)) { | |
663 | free(callback->data); | |
664 | TAILQ_REMOVE(&cfg->g_callbacks, callback, next); | |
665 | free(callback); | |
666 | } | |
667 | } | |
668 | } | |
16f910e1 | 669 | |
8482abe9 VB |
670 | static void |
671 | lldpd_hide_ports(struct lldpd *cfg, struct lldpd_hardware *hardware, int mask) { | |
42b39485 VB |
672 | struct lldpd_port *port; |
673 | int protocols[LLDPD_MODE_MAX+1]; | |
8482abe9 VB |
674 | char buffer[256]; |
675 | int i, j, k, found; | |
42b39485 VB |
676 | unsigned int min; |
677 | ||
8482abe9 VB |
678 | /* Compute the number of occurrences of each protocol */ |
679 | for (i = 0; i <= LLDPD_MODE_MAX; i++) protocols[i] = 0; | |
680 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) | |
681 | protocols[port->p_protocol]++; | |
682 | ||
683 | /* Turn the protocols[] array into an array of | |
684 | enabled/disabled protocols. 1 means enabled, 0 | |
685 | means disabled. */ | |
686 | min = (unsigned int)-1; | |
687 | for (i = 0; i <= LLDPD_MODE_MAX; i++) | |
688 | if (protocols[i] && (protocols[i] < min)) | |
689 | min = protocols[i]; | |
690 | found = 0; | |
691 | for (i = 0; i <= LLDPD_MODE_MAX; i++) | |
692 | if ((protocols[i] == min) && !found) { | |
693 | /* If we need a tie breaker, we take | |
694 | the first protocol only */ | |
695 | if (cfg->g_smart & mask & | |
696 | (SMART_OUTGOING_ONE_PROTO | SMART_INCOMING_ONE_PROTO)) | |
697 | found = 1; | |
698 | protocols[i] = 1; | |
699 | } else protocols[i] = 0; | |
700 | ||
701 | /* We set the p_hidden flag to 1 if the protocol is disabled */ | |
702 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) { | |
703 | if (mask == SMART_OUTGOING) | |
704 | port->p_hidden_out = protocols[port->p_protocol]?0:1; | |
705 | else | |
706 | port->p_hidden_in = protocols[port->p_protocol]?0:1; | |
707 | } | |
708 | ||
709 | /* If we want only one neighbor, we take the first one */ | |
710 | if (cfg->g_smart & mask & | |
711 | (SMART_OUTGOING_ONE_NEIGH | SMART_INCOMING_ONE_NEIGH)) { | |
42b39485 | 712 | found = 0; |
8482abe9 VB |
713 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) { |
714 | if (mask == SMART_OUTGOING) { | |
715 | if (found) port->p_hidden_out = 1; | |
716 | if (!port->p_hidden_out) | |
717 | found = 1; | |
718 | } | |
719 | if (mask == SMART_INCOMING) { | |
720 | if (found) port->p_hidden_in = 1; | |
721 | if (!port->p_hidden_in) | |
42b39485 | 722 | found = 1; |
42b39485 VB |
723 | } |
724 | } | |
8482abe9 | 725 | } |
42b39485 | 726 | |
8482abe9 VB |
727 | /* Print a debug message summarizing the operation */ |
728 | for (i = 0; i <= LLDPD_MODE_MAX; i++) protocols[i] = 0; | |
729 | k = j = 0; | |
730 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) { | |
731 | if (!(((mask == SMART_OUTGOING) && port->p_hidden_out) || | |
732 | ((mask == SMART_INCOMING) && port->p_hidden_in))) { | |
733 | k++; | |
734 | protocols[port->p_protocol] = 1; | |
42b39485 | 735 | } |
8482abe9 VB |
736 | j++; |
737 | } | |
738 | buffer[0] = '\0'; | |
739 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
740 | if (cfg->g_protocols[i].enabled && protocols[cfg->g_protocols[i].mode]) { | |
741 | if (strlen(buffer) + | |
742 | strlen(cfg->g_protocols[i].name) + 3 > sizeof(buffer)) { | |
743 | /* Unlikely, our buffer is too small */ | |
744 | memcpy(buffer + sizeof(buffer) - 4, "...", 4); | |
745 | break; | |
42b39485 | 746 | } |
8482abe9 VB |
747 | if (buffer[0]) |
748 | strcat(buffer, ", "); | |
749 | strcat(buffer, cfg->g_protocols[i].name); | |
42b39485 VB |
750 | } |
751 | } | |
8482abe9 VB |
752 | LLOG_DEBUG("[%s] %s: %d visible neigh / %d. Protocols: %s.", |
753 | (mask == SMART_OUTGOING)?"out filter":"in filter", | |
754 | hardware->h_ifname, k, j, buffer[0]?buffer:"(none)"); | |
42b39485 VB |
755 | } |
756 | ||
566c635d VB |
757 | /* Hide unwanted ports depending on smart mode set by the user */ |
758 | static void | |
759 | lldpd_hide_all(struct lldpd *cfg) | |
760 | { | |
761 | struct lldpd_hardware *hardware; | |
762 | ||
763 | if (!cfg->g_smart) | |
764 | return; | |
765 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
766 | if (cfg->g_smart & SMART_INCOMING_FILTER) | |
767 | lldpd_hide_ports(cfg, hardware, SMART_INCOMING); | |
768 | if (cfg->g_smart & SMART_OUTGOING_FILTER) | |
769 | lldpd_hide_ports(cfg, hardware, SMART_OUTGOING); | |
770 | } | |
771 | } | |
772 | ||
8888d191 | 773 | static void |
43c02e7b VB |
774 | lldpd_recv_all(struct lldpd *cfg) |
775 | { | |
776 | struct lldpd_hardware *hardware; | |
77d7090e | 777 | struct lldpd_callback *callback, *callback_next; |
43c02e7b VB |
778 | fd_set rfds; |
779 | struct timeval tv; | |
43c02e7b | 780 | #ifdef USE_SNMP |
630b4134 VB |
781 | struct timeval snmptv; |
782 | int snmpblock = 0; | |
43c02e7b | 783 | #endif |
0bc32943 | 784 | int rc, nfds, n; |
43c02e7b VB |
785 | char *buffer; |
786 | ||
787 | do { | |
788 | tv.tv_sec = cfg->g_delay - (time(NULL) - cfg->g_lastsent); | |
789 | if (tv.tv_sec < 0) | |
c520cb14 VB |
790 | /* We did not send packets in a long time, |
791 | just give up receive for now. */ | |
792 | break; | |
43c02e7b VB |
793 | if (tv.tv_sec >= cfg->g_delay) |
794 | tv.tv_sec = cfg->g_delay; | |
795 | tv.tv_usec = 0; | |
796 | ||
797 | FD_ZERO(&rfds); | |
798 | nfds = -1; | |
799 | ||
800 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
801 | /* Ignore if interface is down */ | |
6e75df87 | 802 | if ((hardware->h_flags & IFF_RUNNING) == 0) |
43c02e7b | 803 | continue; |
6e75df87 VB |
804 | /* This is quite expensive but we don't rely on internal |
805 | * structure of fd_set. */ | |
bc598c23 | 806 | for (n = 0; n < LLDPD_FD_SETSIZE; n++) |
6e75df87 VB |
807 | if (FD_ISSET(n, &hardware->h_recvfds)) { |
808 | FD_SET(n, &rfds); | |
809 | if (nfds < n) | |
810 | nfds = n; | |
811 | } | |
43c02e7b | 812 | } |
77d7090e VB |
813 | TAILQ_FOREACH(callback, &cfg->g_callbacks, next) { |
814 | FD_SET(callback->fd, &rfds); | |
815 | if (nfds < callback->fd) | |
816 | nfds = callback->fd; | |
43c02e7b | 817 | } |
43c02e7b VB |
818 | |
819 | #ifdef USE_SNMP | |
630b4134 VB |
820 | if (cfg->g_snmp) { |
821 | snmpblock = 0; | |
822 | memcpy(&snmptv, &tv, sizeof(struct timeval)); | |
823 | snmp_select_info(&nfds, &rfds, &snmptv, &snmpblock); | |
824 | if (snmpblock == 0) | |
825 | memcpy(&tv, &snmptv, sizeof(struct timeval)); | |
826 | } | |
43c02e7b VB |
827 | #endif /* USE_SNMP */ |
828 | if (nfds == -1) { | |
829 | sleep(cfg->g_delay); | |
830 | return; | |
831 | } | |
832 | ||
833 | rc = select(nfds + 1, &rfds, NULL, NULL, &tv); | |
834 | if (rc == -1) { | |
835 | if (errno == EINTR) | |
836 | continue; | |
837 | LLOG_WARN("failure on select"); | |
838 | break; | |
839 | } | |
840 | #ifdef USE_SNMP | |
841 | if (cfg->g_snmp) { | |
842 | if (rc > 0) | |
843 | snmp_read(&rfds); | |
844 | else if (rc == 0) | |
845 | snmp_timeout(); | |
846 | } | |
847 | #endif /* USE_SNMP */ | |
848 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
bc598c23 | 849 | for (n = 0; n < LLDPD_FD_SETSIZE; n++) |
6e75df87 VB |
850 | if ((FD_ISSET(n, &hardware->h_recvfds)) && |
851 | (FD_ISSET(n, &rfds))) break; | |
bc598c23 | 852 | if (n == LLDPD_FD_SETSIZE) continue; |
6e75df87 VB |
853 | if ((buffer = (char *)malloc( |
854 | hardware->h_mtu)) == NULL) { | |
855 | LLOG_WARN("failed to alloc reception buffer"); | |
856 | continue; | |
857 | } | |
858 | if ((n = hardware->h_ops->recv(cfg, hardware, | |
859 | n, buffer, hardware->h_mtu)) == -1) { | |
43c02e7b | 860 | free(buffer); |
6e75df87 | 861 | continue; |
43c02e7b | 862 | } |
6e75df87 VB |
863 | hardware->h_rx_cnt++; |
864 | lldpd_decode(cfg, buffer, n, hardware); | |
6b41bbd3 | 865 | lldpd_hide_all(cfg); /* Immediatly hide */ |
6e75df87 VB |
866 | free(buffer); |
867 | break; | |
43c02e7b | 868 | } |
77d7090e VB |
869 | for (callback = TAILQ_FIRST(&cfg->g_callbacks); |
870 | callback; | |
871 | callback = callback_next) { | |
872 | /* Callback function can use TAILQ_REMOVE */ | |
873 | callback_next = TAILQ_NEXT(callback, next); | |
874 | if (FD_ISSET(callback->fd, &rfds)) | |
875 | callback->function(cfg, callback); | |
43c02e7b VB |
876 | } |
877 | ||
878 | #ifdef USE_SNMP | |
879 | if (cfg->g_snmp) { | |
880 | run_alarms(); | |
881 | netsnmp_check_outstanding_agent_requests(); | |
882 | } | |
883 | #endif /* USE_SNMP */ | |
884 | } while ((rc != 0) || (time(NULL) - cfg->g_lastsent < cfg->g_delay)); | |
885 | } | |
886 | ||
8888d191 | 887 | static void |
43c02e7b VB |
888 | lldpd_send_all(struct lldpd *cfg) |
889 | { | |
890 | struct lldpd_hardware *hardware; | |
77507b69 | 891 | struct lldpd_port *port; |
0d86e62f | 892 | int i, sent; |
f7db0dd8 | 893 | |
43c02e7b | 894 | cfg->g_lastsent = time(NULL); |
c520cb14 | 895 | if (cfg->g_receiveonly) return; |
43c02e7b VB |
896 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { |
897 | /* Ignore if interface is down */ | |
6e75df87 | 898 | if ((hardware->h_flags & IFF_RUNNING) == 0) |
43c02e7b VB |
899 | continue; |
900 | ||
0d86e62f | 901 | sent = 0; |
43c02e7b VB |
902 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { |
903 | if (!cfg->g_protocols[i].enabled) | |
904 | continue; | |
77507b69 | 905 | /* We send only if we have at least one remote system |
0c877af0 VB |
906 | * speaking this protocol or if the protocol is forced */ |
907 | if (cfg->g_protocols[i].enabled > 1) { | |
908 | cfg->g_protocols[i].send(cfg, hardware); | |
909 | sent++; | |
910 | continue; | |
911 | } | |
77507b69 | 912 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) { |
42b39485 VB |
913 | /* If this remote port is disabled, we don't |
914 | * consider it */ | |
4d1a5b39 | 915 | if (port->p_hidden_out) |
42b39485 | 916 | continue; |
77507b69 VB |
917 | if (port->p_protocol == |
918 | cfg->g_protocols[i].mode) { | |
919 | cfg->g_protocols[i].send(cfg, | |
920 | hardware); | |
0c877af0 | 921 | sent++; |
77507b69 VB |
922 | break; |
923 | } | |
924 | } | |
43c02e7b | 925 | } |
77507b69 VB |
926 | |
927 | if (!sent) | |
928 | /* Nothing was sent for this port, let's speak LLDP */ | |
929 | cfg->g_protocols[0].send(cfg, | |
930 | hardware); | |
43c02e7b VB |
931 | } |
932 | } | |
933 | ||
89840df0 | 934 | #ifdef ENABLE_LLDPMED |
8888d191 | 935 | static void |
89840df0 VB |
936 | lldpd_med(struct lldpd_chassis *chassis) |
937 | { | |
0265b1e5 | 938 | #if __i386__ || __amd64__ |
55606d4b VB |
939 | static short int once = 0; |
940 | if (!once) { | |
941 | chassis->c_med_hw = dmi_hw(); | |
942 | chassis->c_med_fw = dmi_fw(); | |
943 | chassis->c_med_sn = dmi_sn(); | |
944 | chassis->c_med_manuf = dmi_manuf(); | |
945 | chassis->c_med_model = dmi_model(); | |
946 | chassis->c_med_asset = dmi_asset(); | |
947 | once = 1; | |
948 | } | |
0265b1e5 | 949 | #endif |
89840df0 VB |
950 | } |
951 | #endif | |
952 | ||
8888d191 | 953 | static void |
6e75df87 | 954 | lldpd_update_localchassis(struct lldpd *cfg) |
43c02e7b | 955 | { |
6e75df87 VB |
956 | struct utsname un; |
957 | char *hp; | |
43c02e7b VB |
958 | int f; |
959 | char status; | |
43c02e7b VB |
960 | |
961 | /* Set system name and description */ | |
6e75df87 | 962 | if (uname(&un) != 0) |
43c02e7b | 963 | fatal("failed to get system information"); |
b5562b23 | 964 | if ((hp = priv_gethostbyname()) == NULL) |
43c02e7b | 965 | fatal("failed to get system name"); |
77507b69 VB |
966 | free(LOCAL_CHASSIS(cfg)->c_name); |
967 | free(LOCAL_CHASSIS(cfg)->c_descr); | |
968 | if ((LOCAL_CHASSIS(cfg)->c_name = strdup(hp)) == NULL) | |
249644a4 | 969 | fatal(NULL); |
40ce835b ST |
970 | if (cfg->g_descr_override) { |
971 | if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s", | |
972 | cfg->g_descr_override) == -1) | |
de1b1b3a | 973 | fatal("failed to set full system description"); |
40ce835b ST |
974 | } else { |
975 | if (cfg->g_advertise_version) { | |
a9db9b44 | 976 | if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s %s %s %s %s", |
c036b15d | 977 | cfg->g_lsb_release?cfg->g_lsb_release:"", |
a9db9b44 | 978 | un.sysname, un.release, un.version, un.machine) |
40ce835b ST |
979 | == -1) |
980 | fatal("failed to set full system description"); | |
981 | } else { | |
982 | if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s", | |
c036b15d | 983 | cfg->g_lsb_release?cfg->g_lsb_release:un.sysname) == -1) |
40ce835b ST |
984 | fatal("failed to set minimal system description"); |
985 | } | |
986 | } | |
43c02e7b VB |
987 | |
988 | /* Check forwarding */ | |
b5562b23 | 989 | if ((f = priv_open("/proc/sys/net/ipv4/ip_forward")) >= 0) { |
e5c5ae41 VB |
990 | if ((read(f, &status, 1) == 1) && (status == '1')) |
991 | LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_ROUTER; | |
992 | else | |
993 | LOCAL_CHASSIS(cfg)->c_cap_enabled &= ~LLDP_CAP_ROUTER; | |
43c02e7b VB |
994 | close(f); |
995 | } | |
89840df0 | 996 | #ifdef ENABLE_LLDPMED |
77507b69 VB |
997 | if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_TELEPHONE) |
998 | LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_TELEPHONE; | |
999 | lldpd_med(LOCAL_CHASSIS(cfg)); | |
1000 | free(LOCAL_CHASSIS(cfg)->c_med_sw); | |
de1b1b3a VB |
1001 | if (cfg->g_advertise_version) |
1002 | LOCAL_CHASSIS(cfg)->c_med_sw = strdup(un.release); | |
1003 | else | |
1004 | LOCAL_CHASSIS(cfg)->c_med_sw = strdup("Unknown"); | |
89840df0 | 1005 | #endif |
43c02e7b | 1006 | |
b4ac8083 VB |
1007 | /* Set chassis ID if needed. This is only done if chassis ID |
1008 | has not been set previously (with the MAC address of an | |
1009 | interface for example) | |
1010 | */ | |
1011 | if (LOCAL_CHASSIS(cfg)->c_id == NULL) { | |
1012 | if (!(LOCAL_CHASSIS(cfg)->c_id = strdup(LOCAL_CHASSIS(cfg)->c_name))) | |
6e75df87 | 1013 | fatal(NULL); |
b4ac8083 VB |
1014 | LOCAL_CHASSIS(cfg)->c_id_len = strlen(LOCAL_CHASSIS(cfg)->c_name); |
1015 | LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LOCAL; | |
6e75df87 VB |
1016 | } |
1017 | } | |
1018 | ||
1019 | static void | |
1020 | lldpd_update_localports(struct lldpd *cfg) | |
1021 | { | |
1022 | struct ifaddrs *ifap; | |
1023 | struct lldpd_hardware *hardware; | |
1024 | lldpd_ifhandlers ifhs[] = { | |
ba85f9f4 | 1025 | lldpd_ifh_whitelist, /* Is the interface whitelisted? */ |
849954d7 | 1026 | lldpd_ifh_bond, /* Handle bond */ |
6e75df87 | 1027 | lldpd_ifh_eth, /* Handle classic ethernet interfaces */ |
5994b27d | 1028 | #ifdef ENABLE_DOT1 |
6e75df87 | 1029 | lldpd_ifh_vlan, /* Handle VLAN */ |
5994b27d | 1030 | #endif |
6e75df87 | 1031 | lldpd_ifh_mgmt, /* Handle management address (if not already handled) */ |
b4ac8083 | 1032 | lldpd_ifh_chassis, /* Handle chassis ID (if not already handled) */ |
6e75df87 VB |
1033 | NULL |
1034 | }; | |
1035 | lldpd_ifhandlers *ifh; | |
1036 | ||
1037 | /* h_flags is set to 0 for each port. If the port is updated, h_flags | |
1038 | * will be set to a non-zero value. This will allow us to clean up any | |
1039 | * non up-to-date port */ | |
43c02e7b VB |
1040 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) |
1041 | hardware->h_flags = 0; | |
1042 | ||
6e75df87 VB |
1043 | if (getifaddrs(&ifap) != 0) |
1044 | fatal("lldpd_update_localports: failed to get interface list"); | |
1045 | ||
1046 | /* We will run the list of interfaces through a list of interface | |
1047 | * handlers. Each handler will create or update some hardware port (and | |
1048 | * will set h_flags to a non zero value. The handler can use the list of | |
1049 | * interfaces but this is not mandatory. If the interface handler | |
1050 | * handles an interface from the list, it should set ifa_flags to 0 to | |
1051 | * let know the other handlers that it took care of this interface. This | |
1052 | * means that more specific handlers should be before less specific | |
1053 | * ones. */ | |
1054 | for (ifh = ifhs; *ifh != NULL; ifh++) | |
1055 | (*ifh)(cfg, ifap); | |
43c02e7b | 1056 | freeifaddrs(ifap); |
6e75df87 | 1057 | } |
43c02e7b | 1058 | |
6e75df87 VB |
1059 | static void |
1060 | lldpd_loop(struct lldpd *cfg) | |
1061 | { | |
1062 | /* Main loop. | |
1063 | ||
1064 | 1. Update local ports information | |
1065 | 2. Clean unwanted (removed) local ports | |
1066 | 3. Update local chassis information | |
1067 | 4. Send packets | |
1068 | 5. Receive packets | |
42b39485 | 1069 | 6. Update smart mode |
6e75df87 | 1070 | */ |
849954d7 | 1071 | LOCAL_CHASSIS(cfg)->c_cap_enabled = 0; |
6e75df87 | 1072 | lldpd_update_localports(cfg); |
43c02e7b | 1073 | lldpd_cleanup(cfg); |
6e75df87 | 1074 | lldpd_update_localchassis(cfg); |
c520cb14 | 1075 | lldpd_send_all(cfg); |
43c02e7b VB |
1076 | lldpd_recv_all(cfg); |
1077 | } | |
1078 | ||
8888d191 | 1079 | static void |
43c02e7b VB |
1080 | lldpd_shutdown(int sig) |
1081 | { | |
1082 | LLOG_INFO("signal received, exiting"); | |
1083 | exit(0); | |
1084 | } | |
1085 | ||
1086 | /* For signal handling */ | |
8888d191 | 1087 | static struct lldpd *gcfg = NULL; |
43c02e7b | 1088 | |
8888d191 | 1089 | static void |
43c02e7b VB |
1090 | lldpd_exit() |
1091 | { | |
6e75df87 | 1092 | struct lldpd_hardware *hardware, *hardware_next; |
b5562b23 VB |
1093 | close(gcfg->g_ctl); |
1094 | priv_ctl_cleanup(); | |
6e75df87 VB |
1095 | for (hardware = TAILQ_FIRST(&gcfg->g_hardware); hardware != NULL; |
1096 | hardware = hardware_next) { | |
1097 | hardware_next = TAILQ_NEXT(hardware, h_entries); | |
1098 | lldpd_hardware_cleanup(gcfg, hardware); | |
43c02e7b VB |
1099 | } |
1100 | #ifdef USE_SNMP | |
1101 | if (gcfg->g_snmp) | |
1102 | agent_shutdown(); | |
1103 | #endif /* USE_SNMP */ | |
1104 | } | |
1105 | ||
8482abe9 VB |
1106 | struct intint { int a; int b; }; |
1107 | static const struct intint filters[] = { | |
1108 | { 0, 0 }, | |
1109 | { 1, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | | |
1110 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO }, | |
1111 | { 2, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO }, | |
1112 | { 3, SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO }, | |
1113 | { 4, SMART_INCOMING_FILTER | SMART_OUTGOING_FILTER }, | |
1114 | { 5, SMART_INCOMING_FILTER }, | |
1115 | { 6, SMART_OUTGOING_FILTER }, | |
1116 | { 7, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_INCOMING_ONE_NEIGH | | |
1117 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO }, | |
1118 | { 8, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_INCOMING_ONE_NEIGH }, | |
1119 | { 9, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | | |
1120 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO }, | |
1121 | { 10, SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH }, | |
1122 | { 11, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH }, | |
1123 | { 12, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | | |
1124 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH }, | |
1125 | { 13, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | | |
1126 | SMART_OUTGOING_FILTER }, | |
1127 | { 14, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | | |
1128 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH }, | |
1129 | { 15, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | | |
1130 | SMART_OUTGOING_FILTER }, | |
1131 | { 16, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_INCOMING_ONE_NEIGH | | |
1132 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH }, | |
1133 | { 17, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_INCOMING_ONE_NEIGH | | |
1134 | SMART_OUTGOING_FILTER }, | |
1135 | { 18, SMART_INCOMING_FILTER | | |
1136 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH }, | |
1137 | { 19, SMART_INCOMING_FILTER | | |
1138 | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO }, | |
1139 | { -1, 0 } | |
1140 | }; | |
1141 | ||
43c02e7b | 1142 | int |
2acc1418 | 1143 | lldpd_main(int argc, char *argv[]) |
43c02e7b VB |
1144 | { |
1145 | struct lldpd *cfg; | |
77507b69 | 1146 | struct lldpd_chassis *lchassis; |
e809a587 VB |
1147 | int ch, debug = 0; |
1148 | #ifdef USE_SNMP | |
1149 | int snmp = 0; | |
bbea66e1 | 1150 | char *agentx = NULL; /* AgentX socket */ |
e809a587 | 1151 | #endif |
e6b36c87 | 1152 | char *mgmtp = NULL, *mgmtp6 = NULL; |
5339e725 | 1153 | char *cidp = NULL; |
ba85f9f4 | 1154 | char *interfaces = NULL; |
993a6e50 | 1155 | char *popt, opts[] = |
e6b36c87 | 1156 | "H:hkrdxX:m:4:6:I:C:p:M:P:S:i@ "; |
de1b1b3a | 1157 | int i, found, advertise_version = 1; |
89840df0 | 1158 | #ifdef ENABLE_LLDPMED |
e809a587 | 1159 | int lldpmed = 0, noinventory = 0; |
89840df0 | 1160 | #endif |
d4afb919 VB |
1161 | char *descr_override = NULL; |
1162 | char *platform_override = NULL; | |
c036b15d | 1163 | char *lsb_release = NULL; |
8482abe9 | 1164 | int smart = 15; |
537a8043 | 1165 | int receiveonly = 0; |
43c02e7b VB |
1166 | |
1167 | saved_argv = argv; | |
1168 | ||
1169 | /* | |
1170 | * Get and parse command line options | |
1171 | */ | |
f0bd3505 | 1172 | popt = strchr(opts, '@'); |
0c877af0 | 1173 | for (i=0; protos[i].mode != 0; i++) |
43c02e7b | 1174 | *(popt++) = protos[i].arg; |
43c02e7b VB |
1175 | *popt = '\0'; |
1176 | while ((ch = getopt(argc, argv, opts)) != -1) { | |
1177 | switch (ch) { | |
b162b740 VB |
1178 | case 'h': |
1179 | usage(); | |
1180 | break; | |
43c02e7b VB |
1181 | case 'd': |
1182 | debug++; | |
1183 | break; | |
537a8043 VB |
1184 | case 'r': |
1185 | receiveonly = 1; | |
1186 | break; | |
e6b36c87 JV |
1187 | case 'm': /* fall through */ |
1188 | case '4': | |
43c02e7b VB |
1189 | mgmtp = optarg; |
1190 | break; | |
e6b36c87 JV |
1191 | case '6': |
1192 | mgmtp6 = optarg; | |
ba85f9f4 VB |
1193 | case 'I': |
1194 | interfaces = optarg; | |
1195 | break; | |
5339e725 VB |
1196 | case 'C': |
1197 | cidp = optarg; | |
1198 | break; | |
de1b1b3a VB |
1199 | case 'k': |
1200 | advertise_version = 0; | |
1201 | break; | |
e809a587 | 1202 | #ifdef ENABLE_LLDPMED |
115ff55c | 1203 | case 'M': |
89840df0 | 1204 | lldpmed = atoi(optarg); |
e809a587 VB |
1205 | if ((lldpmed < 1) || (lldpmed > 4)) { |
1206 | fprintf(stderr, "-M requires an argument between 1 and 4\n"); | |
89840df0 | 1207 | usage(); |
e809a587 | 1208 | } |
89840df0 | 1209 | break; |
e809a587 | 1210 | case 'i': |
e809a587 | 1211 | noinventory = 1; |
115ff55c | 1212 | break; |
e809a587 | 1213 | #else |
115ff55c VB |
1214 | case 'M': |
1215 | case 'i': | |
e809a587 VB |
1216 | fprintf(stderr, "LLDP-MED support is not built-in\n"); |
1217 | usage(); | |
e809a587 | 1218 | break; |
115ff55c | 1219 | #endif |
e809a587 | 1220 | #ifdef USE_SNMP |
bbea66e1 V |
1221 | case 'x': |
1222 | snmp = 1; | |
1223 | break; | |
1224 | case 'X': | |
43c02e7b | 1225 | snmp = 1; |
bbea66e1 V |
1226 | agentx = optarg; |
1227 | break; | |
e809a587 | 1228 | #else |
bbea66e1 V |
1229 | case 'x': |
1230 | case 'X': | |
e809a587 VB |
1231 | fprintf(stderr, "SNMP support is not built-in\n"); |
1232 | usage(); | |
1233 | #endif | |
43c02e7b | 1234 | break; |
40ce835b ST |
1235 | case 'S': |
1236 | descr_override = strdup(optarg); | |
1237 | break; | |
d4afb919 VB |
1238 | case 'P': |
1239 | platform_override = strdup(optarg); | |
1240 | break; | |
42b39485 | 1241 | case 'H': |
8482abe9 | 1242 | smart = atoi(optarg); |
42b39485 | 1243 | break; |
43c02e7b VB |
1244 | default: |
1245 | found = 0; | |
1246 | for (i=0; protos[i].mode != 0; i++) { | |
43c02e7b | 1247 | if (ch == protos[i].arg) { |
0c877af0 VB |
1248 | protos[i].enabled++; |
1249 | /* When an argument enable | |
1250 | several protocols, only the | |
1251 | first one can be forced. */ | |
1252 | if (found && protos[i].enabled > 1) | |
1253 | protos[i].enabled = 1; | |
43c02e7b VB |
1254 | found = 1; |
1255 | } | |
1256 | } | |
1257 | if (!found) | |
1258 | usage(); | |
1259 | } | |
1260 | } | |
8482abe9 VB |
1261 | |
1262 | /* Set correct smart mode */ | |
1263 | for (i=0; (filters[i].a != -1) && (filters[i].a != smart); i++); | |
1264 | if (filters[i].a == -1) { | |
1265 | fprintf(stderr, "Incorrect mode for -H\n"); | |
1266 | usage(); | |
1267 | } | |
1268 | smart = filters[i].b; | |
115ff55c | 1269 | |
6bb9c4e0 | 1270 | log_init(debug, __progname); |
4b9a5a23 | 1271 | tzset(); /* Get timezone info before chroot */ |
a2993d83 | 1272 | |
eac2f38a VB |
1273 | if (!debug) { |
1274 | int pid; | |
1275 | char *spid; | |
1276 | if (daemon(0, 0) != 0) | |
1277 | fatal("failed to detach daemon"); | |
1278 | if ((pid = open(LLDPD_PID_FILE, | |
0aa5f676 | 1279 | O_TRUNC | O_CREAT | O_WRONLY, 0644)) == -1) |
eac2f38a VB |
1280 | fatal("unable to open pid file " LLDPD_PID_FILE); |
1281 | if (asprintf(&spid, "%d\n", getpid()) == -1) | |
1282 | fatal("unable to create pid file " LLDPD_PID_FILE); | |
1283 | if (write(pid, spid, strlen(spid)) == -1) | |
1284 | fatal("unable to write pid file " LLDPD_PID_FILE); | |
1285 | free(spid); | |
1286 | close(pid); | |
1287 | } | |
1288 | ||
ae87586a MT |
1289 | /* Try to read system information from /etc/os-release if possible. |
1290 | Fall back to lsb_release for compatibility. */ | |
1291 | lsb_release = lldpd_get_os_release(); | |
1292 | if (!lsb_release) { | |
1293 | lsb_release = lldpd_get_lsb_release(); | |
1294 | } | |
c036b15d | 1295 | |
a2993d83 | 1296 | priv_init(PRIVSEP_CHROOT); |
43c02e7b | 1297 | |
43c02e7b VB |
1298 | if ((cfg = (struct lldpd *) |
1299 | calloc(1, sizeof(struct lldpd))) == NULL) | |
1300 | fatal(NULL); | |
1301 | ||
766f32b3 | 1302 | cfg->g_mgmt_pattern = mgmtp; |
e6b36c87 | 1303 | cfg->g_mgmt_pattern6 = mgmtp6; |
5339e725 | 1304 | cfg->g_cid_pattern = cidp; |
ba85f9f4 | 1305 | cfg->g_interfaces = interfaces; |
42b39485 | 1306 | cfg->g_smart = smart; |
537a8043 | 1307 | cfg->g_receiveonly = receiveonly; |
43c02e7b VB |
1308 | |
1309 | /* Get ioctl socket */ | |
1310 | if ((cfg->g_sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) | |
1311 | fatal("failed to get ioctl socket"); | |
1312 | cfg->g_delay = LLDPD_TX_DELAY; | |
1313 | ||
c036b15d | 1314 | /* Description */ |
bf89e7e0 | 1315 | if (!(cfg->g_advertise_version = advertise_version) && lsb_release) |
c036b15d VB |
1316 | /* Remove the \n */ |
1317 | lsb_release[strlen(lsb_release) - 1] = '\0'; | |
1318 | cfg->g_lsb_release = lsb_release; | |
40ce835b ST |
1319 | if (descr_override) |
1320 | cfg->g_descr_override = descr_override; | |
1321 | ||
d4afb919 VB |
1322 | if (platform_override) |
1323 | cfg->g_platform_override = platform_override; | |
1324 | ||
43c02e7b | 1325 | /* Set system capabilities */ |
77507b69 VB |
1326 | if ((lchassis = (struct lldpd_chassis*) |
1327 | calloc(1, sizeof(struct lldpd_chassis))) == NULL) | |
1328 | fatal(NULL); | |
1329 | lchassis->c_cap_available = LLDP_CAP_BRIDGE | LLDP_CAP_WLAN | | |
43c02e7b | 1330 | LLDP_CAP_ROUTER; |
e6b36c87 | 1331 | TAILQ_INIT(&lchassis->c_mgmt); |
89840df0 VB |
1332 | #ifdef ENABLE_LLDPMED |
1333 | if (lldpmed > 0) { | |
1334 | if (lldpmed == LLDPMED_CLASS_III) | |
77507b69 VB |
1335 | lchassis->c_cap_available |= LLDP_CAP_TELEPHONE; |
1336 | lchassis->c_med_type = lldpmed; | |
1337 | lchassis->c_med_cap_available = LLDPMED_CAP_CAP | | |
4c0d2715 VB |
1338 | LLDPMED_CAP_IV | LLDPMED_CAP_LOCATION | |
1339 | LLDPMED_CAP_POLICY | LLDPMED_CAP_MDI_PSE | LLDPMED_CAP_MDI_PD; | |
740593ff | 1340 | cfg->g_noinventory = noinventory; |
42bddd41 VB |
1341 | } else |
1342 | cfg->g_noinventory = 1; | |
89840df0 | 1343 | #endif |
43c02e7b VB |
1344 | |
1345 | /* Set TTL */ | |
77507b69 | 1346 | lchassis->c_ttl = LLDPD_TTL; |
43c02e7b VB |
1347 | |
1348 | cfg->g_protocols = protos; | |
43c02e7b | 1349 | for (i=0; protos[i].mode != 0; i++) |
0c877af0 VB |
1350 | if (protos[i].enabled > 1) |
1351 | LLOG_INFO("protocol %s enabled and forced", protos[i].name); | |
1352 | else if (protos[i].enabled) | |
43c02e7b | 1353 | LLOG_INFO("protocol %s enabled", protos[i].name); |
0c877af0 | 1354 | else |
43c02e7b | 1355 | LLOG_INFO("protocol %s disabled", protos[i].name); |
43c02e7b VB |
1356 | |
1357 | TAILQ_INIT(&cfg->g_hardware); | |
77507b69 VB |
1358 | TAILQ_INIT(&cfg->g_chassis); |
1359 | TAILQ_INSERT_TAIL(&cfg->g_chassis, lchassis, c_entries); | |
9898ac07 | 1360 | lchassis->c_refcount++; /* We should always keep a reference to local chassis */ |
43c02e7b | 1361 | |
77d7090e VB |
1362 | TAILQ_INIT(&cfg->g_callbacks); |
1363 | ||
43c02e7b VB |
1364 | #ifdef USE_SNMP |
1365 | if (snmp) { | |
1366 | cfg->g_snmp = 1; | |
bbea66e1 | 1367 | agent_init(cfg, agentx, debug); |
43c02e7b VB |
1368 | } |
1369 | #endif /* USE_SNMP */ | |
1370 | ||
1371 | /* Create socket */ | |
6f1046d1 | 1372 | if ((cfg->g_ctl = priv_ctl_create()) == -1) |
b5562b23 | 1373 | fatalx("unable to create control socket " LLDPD_CTL_SOCKET); |
77d7090e VB |
1374 | if (lldpd_callback_add(cfg, cfg->g_ctl, ctl_accept, NULL) != 0) |
1375 | fatalx("unable to add callback for control socket"); | |
43c02e7b | 1376 | |
43c02e7b VB |
1377 | gcfg = cfg; |
1378 | if (atexit(lldpd_exit) != 0) { | |
b5562b23 VB |
1379 | close(cfg->g_ctl); |
1380 | priv_ctl_cleanup(); | |
43c02e7b VB |
1381 | fatal("unable to set exit function"); |
1382 | } | |
43c02e7b VB |
1383 | |
1384 | /* Signal handling */ | |
b5562b23 | 1385 | signal(SIGHUP, lldpd_shutdown); |
43c02e7b VB |
1386 | signal(SIGINT, lldpd_shutdown); |
1387 | signal(SIGTERM, lldpd_shutdown); | |
1388 | ||
1389 | for (;;) | |
1390 | lldpd_loop(cfg); | |
1391 | ||
1392 | return (0); | |
1393 | } |