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7ef5fefc CF |
1 | /* |
2 | * IS-IS TLV Serializer/Deserializer | |
3 | * | |
4 | * Copyright (C) 2015,2017 Christian Franke | |
5 | * | |
1b3f47d0 OD |
6 | * Copyright (C) 2019 Olivier Dugeon - Orange Labs (for TE and SR) |
7 | * | |
7ef5fefc CF |
8 | * This file is part of FRR. |
9 | * | |
10 | * FRR is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2, or (at your option) any | |
13 | * later version. | |
14 | * | |
15 | * FRR is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with FRR; see the file COPYING. If not, write to the Free | |
22 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
23 | * 02111-1307, USA. | |
24 | */ | |
25 | #include <zebra.h> | |
26 | ||
6252100f | 27 | #ifdef CRYPTO_INTERNAL |
7ef5fefc | 28 | #include "md5.h" |
6252100f | 29 | #endif |
7ef5fefc CF |
30 | #include "memory.h" |
31 | #include "stream.h" | |
32 | #include "sbuf.h" | |
1b3f47d0 | 33 | #include "network.h" |
7ef5fefc CF |
34 | |
35 | #include "isisd/isisd.h" | |
36 | #include "isisd/isis_memory.h" | |
841791b6 | 37 | #include "isisd/isis_tlvs.h" |
7ef5fefc CF |
38 | #include "isisd/isis_common.h" |
39 | #include "isisd/isis_mt.h" | |
40 | #include "isisd/isis_misc.h" | |
41 | #include "isisd/isis_adjacency.h" | |
42 | #include "isisd/isis_circuit.h" | |
43 | #include "isisd/isis_pdu.h" | |
44 | #include "isisd/isis_lsp.h" | |
45 | #include "isisd/isis_te.h" | |
46 | ||
841791b6 | 47 | DEFINE_MTYPE_STATIC(ISISD, ISIS_TLV, "ISIS TLVs") |
7ef5fefc CF |
48 | DEFINE_MTYPE_STATIC(ISISD, ISIS_SUBTLV, "ISIS Sub-TLVs") |
49 | DEFINE_MTYPE_STATIC(ISISD, ISIS_MT_ITEM_LIST, "ISIS MT Item Lists") | |
50 | ||
51 | typedef int (*unpack_tlv_func)(enum isis_tlv_context context, uint8_t tlv_type, | |
52 | uint8_t tlv_len, struct stream *s, | |
53 | struct sbuf *log, void *dest, int indent); | |
54 | typedef int (*pack_item_func)(struct isis_item *item, struct stream *s); | |
55 | typedef void (*free_item_func)(struct isis_item *i); | |
56 | typedef int (*unpack_item_func)(uint16_t mtid, uint8_t len, struct stream *s, | |
57 | struct sbuf *log, void *dest, int indent); | |
58 | typedef void (*format_item_func)(uint16_t mtid, struct isis_item *i, | |
59 | struct sbuf *buf, int indent); | |
60 | typedef struct isis_item *(*copy_item_func)(struct isis_item *i); | |
61 | ||
62 | struct tlv_ops { | |
63 | const char *name; | |
64 | unpack_tlv_func unpack; | |
65 | ||
66 | pack_item_func pack_item; | |
67 | free_item_func free_item; | |
68 | unpack_item_func unpack_item; | |
69 | format_item_func format_item; | |
70 | copy_item_func copy_item; | |
71 | }; | |
72 | ||
73 | enum how_to_pack { | |
74 | ISIS_ITEMS, | |
75 | ISIS_MT_ITEMS, | |
76 | }; | |
77 | ||
78 | struct pack_order_entry { | |
79 | enum isis_tlv_context context; | |
80 | enum isis_tlv_type type; | |
81 | enum how_to_pack how_to_pack; | |
82 | size_t what_to_pack; | |
83 | }; | |
84 | #define PACK_ENTRY(t, h, w) \ | |
85 | { \ | |
86 | .context = ISIS_CONTEXT_LSP, .type = ISIS_TLV_##t, \ | |
87 | .how_to_pack = (h), \ | |
88 | .what_to_pack = offsetof(struct isis_tlvs, w), \ | |
89 | } | |
90 | ||
2b64873d | 91 | static const struct pack_order_entry pack_order[] = { |
7ef5fefc CF |
92 | PACK_ENTRY(OLDSTYLE_REACH, ISIS_ITEMS, oldstyle_reach), |
93 | PACK_ENTRY(LAN_NEIGHBORS, ISIS_ITEMS, lan_neighbor), | |
94 | PACK_ENTRY(LSP_ENTRY, ISIS_ITEMS, lsp_entries), | |
95 | PACK_ENTRY(EXTENDED_REACH, ISIS_ITEMS, extended_reach), | |
96 | PACK_ENTRY(MT_REACH, ISIS_MT_ITEMS, mt_reach), | |
97 | PACK_ENTRY(OLDSTYLE_IP_REACH, ISIS_ITEMS, oldstyle_ip_reach), | |
98 | PACK_ENTRY(OLDSTYLE_IP_REACH_EXT, ISIS_ITEMS, oldstyle_ip_reach_ext), | |
99 | PACK_ENTRY(IPV4_ADDRESS, ISIS_ITEMS, ipv4_address), | |
100 | PACK_ENTRY(IPV6_ADDRESS, ISIS_ITEMS, ipv6_address), | |
101 | PACK_ENTRY(EXTENDED_IP_REACH, ISIS_ITEMS, extended_ip_reach), | |
102 | PACK_ENTRY(MT_IP_REACH, ISIS_MT_ITEMS, mt_ip_reach), | |
103 | PACK_ENTRY(IPV6_REACH, ISIS_ITEMS, ipv6_reach), | |
1b3f47d0 OD |
104 | PACK_ENTRY(MT_IPV6_REACH, ISIS_MT_ITEMS, mt_ipv6_reach) |
105 | }; | |
7ef5fefc CF |
106 | |
107 | /* This is a forward definition. The table is actually initialized | |
108 | * in at the bottom. */ | |
2b64873d | 109 | static const struct tlv_ops *const tlv_table[ISIS_CONTEXT_MAX][ISIS_TLV_MAX]; |
7ef5fefc CF |
110 | |
111 | /* End of _ops forward definition. */ | |
112 | ||
113 | /* Prototypes */ | |
114 | static void append_item(struct isis_item_list *dest, struct isis_item *item); | |
1b3f47d0 | 115 | static void init_item_list(struct isis_item_list *items); |
7ef5fefc | 116 | |
1b3f47d0 OD |
117 | /* Functions for Extended IS Reachability SubTLVs a.k.a Traffic Engineering */ |
118 | struct isis_ext_subtlvs *isis_alloc_ext_subtlvs(void) | |
119 | { | |
120 | struct isis_ext_subtlvs *ext; | |
121 | ||
122 | ext = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_ext_subtlvs)); | |
123 | init_item_list(&ext->adj_sid); | |
124 | init_item_list(&ext->lan_sid); | |
125 | ||
126 | return ext; | |
127 | } | |
128 | ||
129 | /* | |
130 | * mtid parameter is used to determine if Adjacency is related to IPv4 or IPv6. | |
131 | * A negative value could be used to skip copy of Adjacency SID. | |
132 | */ | |
133 | static struct isis_ext_subtlvs * | |
134 | copy_item_ext_subtlvs(struct isis_ext_subtlvs *exts, int16_t mtid) | |
135 | { | |
136 | struct isis_ext_subtlvs *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
137 | struct isis_adj_sid *adj; | |
138 | struct isis_lan_adj_sid *lan; | |
139 | ||
140 | memcpy(rv, exts, sizeof(struct isis_ext_subtlvs)); | |
141 | init_item_list(&rv->adj_sid); | |
142 | init_item_list(&rv->lan_sid); | |
143 | ||
144 | UNSET_SUBTLV(rv, EXT_ADJ_SID); | |
145 | UNSET_SUBTLV(rv, EXT_LAN_ADJ_SID); | |
146 | ||
147 | /* Copy Adj SID and LAN Adj SID list for IPv4 if needed */ | |
148 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj != NULL; | |
149 | adj = adj->next) { | |
150 | if ((mtid != -1) | |
151 | && (((mtid == ISIS_MT_IPV4_UNICAST) | |
152 | && (adj->family != AF_INET)) | |
153 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
154 | && (adj->family != AF_INET6)))) | |
155 | continue; | |
156 | ||
157 | struct isis_adj_sid *new; | |
158 | ||
159 | new = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_adj_sid)); | |
160 | new->family = adj->family; | |
161 | new->flags = adj->flags; | |
162 | new->weight = adj->weight; | |
163 | new->sid = adj->sid; | |
164 | append_item(&rv->adj_sid, (struct isis_item *)new); | |
165 | SET_SUBTLV(rv, EXT_ADJ_SID); | |
166 | } | |
bd507085 | 167 | |
1b3f47d0 OD |
168 | for (lan = (struct isis_lan_adj_sid *)exts->lan_sid.head; lan != NULL; |
169 | lan = lan->next) { | |
170 | if ((mtid != -1) | |
171 | && (((mtid == ISIS_MT_IPV4_UNICAST) | |
172 | && (lan->family != AF_INET)) | |
173 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
174 | && (lan->family != AF_INET6)))) | |
175 | continue; | |
176 | ||
177 | struct isis_lan_adj_sid *new; | |
178 | ||
179 | new = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(struct isis_lan_adj_sid)); | |
180 | new->family = lan->family; | |
181 | new->flags = lan->flags; | |
182 | new->weight = lan->weight; | |
183 | memcpy(new->neighbor_id, lan->neighbor_id, 6); | |
184 | new->sid = lan->sid; | |
185 | append_item(&rv->lan_sid, (struct isis_item *)new); | |
186 | SET_SUBTLV(rv, EXT_LAN_ADJ_SID); | |
187 | } | |
188 | ||
189 | return rv; | |
190 | } | |
191 | ||
192 | /* mtid parameter is used to manage multi-topology i.e. IPv4 / IPv6 */ | |
193 | static void format_item_ext_subtlvs(struct isis_ext_subtlvs *exts, | |
194 | struct sbuf *buf, int indent, | |
195 | uint16_t mtid) | |
196 | { | |
197 | ||
198 | char ibuf[PREFIX2STR_BUFFER]; | |
199 | ||
200 | /* Standard metrics */ | |
201 | if (IS_SUBTLV(exts, EXT_ADM_GRP)) | |
202 | sbuf_push(buf, indent, "Administrative Group: 0x%" PRIx32 "\n", | |
203 | exts->adm_group); | |
204 | if (IS_SUBTLV(exts, EXT_LLRI)) { | |
205 | sbuf_push(buf, indent, "Link Local ID: %" PRIu32 "\n", | |
206 | exts->local_llri); | |
207 | sbuf_push(buf, indent, "Link Remote ID: %" PRIu32 "\n", | |
208 | exts->remote_llri); | |
209 | } | |
210 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR)) | |
211 | sbuf_push(buf, indent, "Local Interface IP Address(es): %s\n", | |
212 | inet_ntoa(exts->local_addr)); | |
213 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR)) | |
214 | sbuf_push(buf, indent, "Remote Interface IP Address(es): %s\n", | |
215 | inet_ntoa(exts->neigh_addr)); | |
216 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR6)) | |
217 | sbuf_push(buf, indent, "Local Interface IPv6 Address(es): %s\n", | |
218 | inet_ntop(AF_INET6, &exts->local_addr6, ibuf, | |
219 | PREFIX2STR_BUFFER)); | |
220 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR6)) | |
221 | sbuf_push(buf, indent, "Remote Interface IPv6 Address(es): %s\n", | |
222 | inet_ntop(AF_INET6, &exts->local_addr6, ibuf, | |
223 | PREFIX2STR_BUFFER)); | |
224 | if (IS_SUBTLV(exts, EXT_MAX_BW)) | |
225 | sbuf_push(buf, indent, "Maximum Bandwidth: %g (Bytes/sec)\n", | |
226 | exts->max_bw); | |
227 | if (IS_SUBTLV(exts, EXT_MAX_RSV_BW)) | |
228 | sbuf_push(buf, indent, | |
229 | "Maximum Reservable Bandwidth: %g (Bytes/sec)\n", | |
230 | exts->max_rsv_bw); | |
231 | if (IS_SUBTLV(exts, EXT_UNRSV_BW)) { | |
232 | sbuf_push(buf, indent, "Unreserved Bandwidth:\n"); | |
233 | for (int j = 0; j < MAX_CLASS_TYPE; j += 2) { | |
234 | sbuf_push(buf, indent + 2, | |
235 | "[%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)\n", | |
236 | j, exts->unrsv_bw[j], | |
237 | j + 1, exts->unrsv_bw[j + 1]); | |
238 | } | |
239 | } | |
240 | if (IS_SUBTLV(exts, EXT_TE_METRIC)) | |
241 | sbuf_push(buf, indent, "Traffic Engineering Metric: %u\n", | |
242 | exts->te_metric); | |
243 | if (IS_SUBTLV(exts, EXT_RMT_AS)) | |
244 | sbuf_push(buf, indent, | |
245 | "Inter-AS TE Remote AS number: %" PRIu32 "\n", | |
246 | exts->remote_as); | |
247 | if (IS_SUBTLV(exts, EXT_RMT_IP)) | |
248 | sbuf_push(buf, indent, | |
249 | "Inter-AS TE Remote ASBR IP address: %s\n", | |
250 | inet_ntoa(exts->remote_ip)); | |
251 | /* Extended metrics */ | |
252 | if (IS_SUBTLV(exts, EXT_DELAY)) | |
253 | sbuf_push(buf, indent, | |
254 | "%s Average Link Delay: %" PRIu32 " (micro-sec)\n", | |
255 | IS_ANORMAL(exts->delay) ? "Anomalous" : "Normal", | |
256 | exts->delay); | |
257 | if (IS_SUBTLV(exts, EXT_MM_DELAY)) { | |
258 | sbuf_push(buf, indent, "%s Min/Max Link Delay: %" PRIu32 " / %" | |
259 | PRIu32 " (micro-sec)\n", | |
260 | IS_ANORMAL(exts->min_delay) ? "Anomalous" : "Normal", | |
261 | exts->min_delay & TE_EXT_MASK, | |
262 | exts->max_delay & TE_EXT_MASK); | |
263 | } | |
264 | if (IS_SUBTLV(exts, EXT_DELAY_VAR)) { | |
265 | sbuf_push(buf, indent, | |
266 | "Delay Variation: %" PRIu32 " (micro-sec)\n", | |
267 | exts->delay_var & TE_EXT_MASK); | |
268 | } | |
269 | if (IS_SUBTLV(exts, EXT_PKT_LOSS)) | |
270 | sbuf_push(buf, indent, "%s Link Packet Loss: %g (%%)\n", | |
271 | IS_ANORMAL(exts->pkt_loss) ? "Anomalous" : "Normal", | |
272 | (float)((exts->pkt_loss & TE_EXT_MASK) | |
273 | * LOSS_PRECISION)); | |
274 | if (IS_SUBTLV(exts, EXT_RES_BW)) | |
275 | sbuf_push(buf, indent, | |
276 | "Unidir. Residual Bandwidth: %g (Bytes/sec)\n", | |
277 | exts->res_bw); | |
278 | if (IS_SUBTLV(exts, EXT_AVA_BW)) | |
279 | sbuf_push(buf, indent, | |
280 | "Unidir. Available Bandwidth: %g (Bytes/sec)\n", | |
281 | exts->ava_bw); | |
282 | if (IS_SUBTLV(exts, EXT_USE_BW)) | |
283 | sbuf_push(buf, indent, | |
284 | "Unidir. Utilized Bandwidth: %g (Bytes/sec)\n", | |
285 | exts->use_bw); | |
286 | /* Segment Routing Adjacency */ | |
287 | if (IS_SUBTLV(exts, EXT_ADJ_SID)) { | |
288 | struct isis_adj_sid *adj; | |
289 | ||
290 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj; | |
291 | adj = adj->next) { | |
292 | if (((mtid == ISIS_MT_IPV4_UNICAST) | |
293 | && (adj->family != AF_INET)) | |
294 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
295 | && (adj->family != AF_INET6))) | |
296 | continue; | |
297 | sbuf_push( | |
298 | buf, indent, | |
299 | "Adjacency-SID: %" PRIu32 ", Weight: %" PRIu8 | |
300 | ", Flags: F:%c B:%c, V:%c, L:%c, S:%c, P:%c\n", | |
301 | adj->sid, adj->weight, | |
302 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG ? '1' | |
303 | : '0', | |
304 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG ? '1' | |
305 | : '0', | |
306 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG ? '1' | |
307 | : '0', | |
308 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG ? '1' | |
309 | : '0', | |
310 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG ? '1' | |
311 | : '0', | |
312 | adj->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
313 | ? '1' | |
314 | : '0'); | |
315 | } | |
316 | } | |
317 | if (IS_SUBTLV(exts, EXT_LAN_ADJ_SID)) { | |
318 | struct isis_lan_adj_sid *lan; | |
319 | ||
320 | for (lan = (struct isis_lan_adj_sid *)exts->lan_sid.head; | |
321 | lan; lan = lan->next) { | |
322 | if (((mtid == ISIS_MT_IPV4_UNICAST) | |
323 | && (lan->family != AF_INET)) | |
324 | || ((mtid == ISIS_MT_IPV6_UNICAST) | |
325 | && (lan->family != AF_INET6))) | |
326 | continue; | |
327 | sbuf_push(buf, indent, | |
328 | "Lan-Adjacency-SID: %" PRIu32 | |
329 | ", Weight: %" PRIu8 | |
330 | ", Flags: F:%c B:%c, V:%c, L:%c, S:%c, P:%c\n" | |
331 | " Neighbor-ID: %s\n", | |
332 | lan->sid, lan->weight, | |
333 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_FFLG | |
334 | ? '1' | |
335 | : '0', | |
336 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_BFLG | |
337 | ? '1' | |
338 | : '0', | |
339 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG | |
340 | ? '1' | |
341 | : '0', | |
342 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_LFLG | |
343 | ? '1' | |
344 | : '0', | |
345 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_SFLG | |
346 | ? '1' | |
347 | : '0', | |
348 | lan->flags & EXT_SUBTLV_LINK_ADJ_SID_PFLG | |
349 | ? '1' | |
350 | : '0', | |
351 | isis_format_id(lan->neighbor_id, 6)); | |
352 | } | |
353 | } | |
354 | } | |
355 | ||
356 | static void free_item_ext_subtlvs(struct isis_ext_subtlvs *exts) | |
357 | { | |
358 | struct isis_item *item, *next_item; | |
359 | ||
360 | /* First, free Adj SID and LAN Adj SID list if needed */ | |
361 | for (item = exts->adj_sid.head; item; item = next_item) { | |
362 | next_item = item->next; | |
363 | XFREE(MTYPE_ISIS_SUBTLV, item); | |
364 | } | |
365 | for (item = exts->lan_sid.head; item; item = next_item) { | |
366 | next_item = item->next; | |
367 | XFREE(MTYPE_ISIS_SUBTLV, item); | |
368 | } | |
369 | XFREE(MTYPE_ISIS_SUBTLV, exts); | |
370 | } | |
371 | ||
372 | static int pack_item_ext_subtlvs(struct isis_ext_subtlvs *exts, | |
373 | struct stream *s) | |
374 | { | |
375 | uint8_t size; | |
376 | ||
377 | if (STREAM_WRITEABLE(s) < ISIS_SUBTLV_MAX_SIZE) | |
378 | return 1; | |
379 | ||
380 | if (IS_SUBTLV(exts, EXT_ADM_GRP)) { | |
381 | stream_putc(s, ISIS_SUBTLV_ADMIN_GRP); | |
382 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
383 | stream_putl(s, exts->adm_group); | |
384 | } | |
385 | if (IS_SUBTLV(exts, EXT_LLRI)) { | |
386 | stream_putc(s, ISIS_SUBTLV_LLRI); | |
387 | stream_putc(s, ISIS_SUBTLV_LLRI_SIZE); | |
388 | stream_putl(s, exts->local_llri); | |
389 | stream_putl(s, exts->remote_llri); | |
390 | } | |
391 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR)) { | |
392 | stream_putc(s, ISIS_SUBTLV_LOCAL_IPADDR); | |
393 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
394 | stream_put(s, &exts->local_addr.s_addr, 4); | |
395 | } | |
396 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR)) { | |
397 | stream_putc(s, ISIS_SUBTLV_RMT_IPADDR); | |
398 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
399 | stream_put(s, &exts->neigh_addr.s_addr, 4); | |
400 | } | |
401 | if (IS_SUBTLV(exts, EXT_LOCAL_ADDR6)) { | |
402 | stream_putc(s, ISIS_SUBTLV_LOCAL_IPADDR6); | |
403 | stream_putc(s, ISIS_SUBTLV_IPV6_ADDR_SIZE); | |
404 | stream_put(s, &exts->local_addr6, 16); | |
405 | } | |
406 | if (IS_SUBTLV(exts, EXT_NEIGH_ADDR6)) { | |
407 | stream_putc(s, ISIS_SUBTLV_RMT_IPADDR6); | |
408 | stream_putc(s, ISIS_SUBTLV_IPV6_ADDR_SIZE); | |
409 | stream_put(s, &exts->neigh_addr6, 16); | |
410 | } | |
411 | if (IS_SUBTLV(exts, EXT_MAX_BW)) { | |
412 | stream_putc(s, ISIS_SUBTLV_MAX_BW); | |
413 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
414 | stream_putf(s, exts->max_bw); | |
415 | } | |
416 | if (IS_SUBTLV(exts, EXT_MAX_RSV_BW)) { | |
417 | stream_putc(s, ISIS_SUBTLV_MAX_RSV_BW); | |
418 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
419 | stream_putf(s, exts->max_rsv_bw); | |
420 | } | |
421 | if (IS_SUBTLV(exts, EXT_UNRSV_BW)) { | |
422 | stream_putc(s, ISIS_SUBTLV_UNRSV_BW); | |
423 | stream_putc(s, ISIS_SUBTLV_UNRSV_BW_SIZE); | |
424 | for (int j = 0; j < MAX_CLASS_TYPE; j++) | |
425 | stream_putf(s, exts->unrsv_bw[j]); | |
426 | } | |
427 | if (IS_SUBTLV(exts, EXT_TE_METRIC)) { | |
428 | stream_putc(s, ISIS_SUBTLV_TE_METRIC); | |
429 | stream_putc(s, ISIS_SUBTLV_TE_METRIC_SIZE); | |
430 | stream_put3(s, exts->te_metric); | |
431 | } | |
432 | if (IS_SUBTLV(exts, EXT_RMT_AS)) { | |
433 | stream_putc(s, ISIS_SUBTLV_RAS); | |
434 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
435 | stream_putl(s, exts->remote_as); | |
436 | } | |
437 | if (IS_SUBTLV(exts, EXT_RMT_IP)) { | |
438 | stream_putc(s, ISIS_SUBTLV_RIP); | |
439 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
440 | stream_put(s, &exts->remote_ip.s_addr, 4); | |
441 | } | |
442 | if (IS_SUBTLV(exts, EXT_DELAY)) { | |
443 | stream_putc(s, ISIS_SUBTLV_AV_DELAY); | |
444 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
445 | stream_putl(s, exts->delay); | |
446 | } | |
447 | if (IS_SUBTLV(exts, EXT_MM_DELAY)) { | |
448 | stream_putc(s, ISIS_SUBTLV_MM_DELAY); | |
449 | stream_putc(s, ISIS_SUBTLV_MM_DELAY_SIZE); | |
450 | stream_putl(s, exts->min_delay); | |
451 | stream_putl(s, exts->max_delay); | |
452 | } | |
453 | if (IS_SUBTLV(exts, EXT_DELAY_VAR)) { | |
454 | stream_putc(s, ISIS_SUBTLV_DELAY_VAR); | |
455 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
456 | stream_putl(s, exts->delay_var); | |
457 | } | |
458 | if (IS_SUBTLV(exts, EXT_PKT_LOSS)) { | |
459 | stream_putc(s, ISIS_SUBTLV_PKT_LOSS); | |
460 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
461 | stream_putl(s, exts->pkt_loss); | |
462 | } | |
463 | if (IS_SUBTLV(exts, EXT_RES_BW)) { | |
464 | stream_putc(s, ISIS_SUBTLV_RES_BW); | |
465 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
466 | stream_putf(s, exts->res_bw); | |
467 | } | |
468 | if (IS_SUBTLV(exts, EXT_AVA_BW)) { | |
469 | stream_putc(s, ISIS_SUBTLV_AVA_BW); | |
470 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
471 | stream_putf(s, exts->ava_bw); | |
472 | } | |
473 | if (IS_SUBTLV(exts, EXT_USE_BW)) { | |
474 | stream_putc(s, ISIS_SUBTLV_USE_BW); | |
475 | stream_putc(s, ISIS_SUBTLV_DEF_SIZE); | |
476 | stream_putf(s, exts->use_bw); | |
477 | } | |
478 | if (IS_SUBTLV(exts, EXT_ADJ_SID)) { | |
479 | struct isis_adj_sid *adj; | |
480 | ||
481 | for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj; | |
482 | adj = adj->next) { | |
483 | stream_putc(s, ISIS_SUBTLV_ADJ_SID); | |
484 | size = ISIS_SUBTLV_ADJ_SID_SIZE; | |
485 | if (!(adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG)) | |
486 | size++; | |
487 | stream_putc(s, size); | |
488 | stream_putc(s, adj->flags); | |
489 | stream_putc(s, adj->weight); | |
490 | if (adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
491 | stream_put3(s, adj->sid); | |
492 | else | |
493 | stream_putl(s, adj->sid); | |
494 | ||
495 | } | |
496 | } | |
497 | if (IS_SUBTLV(exts, EXT_LAN_ADJ_SID)) { | |
498 | struct isis_lan_adj_sid *lan; | |
499 | ||
500 | for (lan = (struct isis_lan_adj_sid *)exts->lan_sid.head; lan; | |
501 | lan = lan->next) { | |
502 | stream_putc(s, ISIS_SUBTLV_LAN_ADJ_SID); | |
503 | size = ISIS_SUBTLV_LAN_ADJ_SID_SIZE; | |
504 | if (!(lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG)) | |
505 | size++; | |
506 | stream_putc(s, size); | |
507 | stream_putc(s, lan->flags); | |
508 | stream_putc(s, lan->weight); | |
509 | stream_put(s, lan->neighbor_id, 6); | |
510 | if (lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
511 | stream_put3(s, lan->sid); | |
512 | else | |
513 | stream_putl(s, lan->sid); | |
514 | } | |
515 | } | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | static int unpack_item_ext_subtlvs(uint16_t mtid, uint8_t len, struct stream *s, | |
521 | struct sbuf *log, void *dest, int indent) | |
522 | { | |
523 | uint8_t sum = 0; | |
524 | uint8_t subtlv_type; | |
525 | uint8_t subtlv_len; | |
526 | ||
527 | struct isis_extended_reach *rv = dest; | |
528 | struct isis_ext_subtlvs *exts = isis_alloc_ext_subtlvs(); | |
529 | ||
530 | rv->subtlvs = exts; | |
531 | ||
532 | /* | |
533 | * Parse subTLVs until reach subTLV length | |
534 | * Check that it remains at least 2 bytes: subTLV Type & Length | |
535 | */ | |
536 | while (len > sum + 2) { | |
537 | /* Read SubTLV Type and Length */ | |
538 | subtlv_type = stream_getc(s); | |
539 | subtlv_len = stream_getc(s); | |
540 | if (subtlv_len > len - sum) { | |
541 | sbuf_push(log, indent, "TLV %" PRIu8 ": Available data %" PRIu8 " is less than TLV size %u !\n", | |
542 | subtlv_type, len - sum, subtlv_len); | |
543 | return 1; | |
544 | } | |
545 | ||
546 | switch (subtlv_type) { | |
547 | /* Standard Metric as defined in RFC5305 */ | |
548 | case ISIS_SUBTLV_ADMIN_GRP: | |
549 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
550 | sbuf_push(log, indent, | |
551 | "TLV size does not match expected size for Administrative Group!\n"); | |
552 | } else { | |
553 | exts->adm_group = stream_getl(s); | |
554 | SET_SUBTLV(exts, EXT_ADM_GRP); | |
555 | } | |
556 | break; | |
557 | case ISIS_SUBTLV_LLRI: | |
558 | if (subtlv_len != ISIS_SUBTLV_LLRI_SIZE) { | |
559 | sbuf_push(log, indent, | |
560 | "TLV size does not match expected size for Link ID!\n"); | |
561 | } else { | |
562 | exts->local_llri = stream_getl(s); | |
563 | exts->remote_llri = stream_getl(s); | |
564 | SET_SUBTLV(exts, EXT_LLRI); | |
565 | } | |
566 | break; | |
567 | case ISIS_SUBTLV_LOCAL_IPADDR: | |
568 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
569 | sbuf_push(log, indent, | |
570 | "TLV size does not match expected size for Local IP address!\n"); | |
571 | } else { | |
572 | stream_get(&exts->local_addr.s_addr, s, 4); | |
573 | SET_SUBTLV(exts, EXT_LOCAL_ADDR); | |
574 | } | |
575 | break; | |
576 | case ISIS_SUBTLV_RMT_IPADDR: | |
577 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
578 | sbuf_push(log, indent, | |
579 | "TLV size does not match expected size for Remote IP address!\n"); | |
580 | } else { | |
581 | stream_get(&exts->neigh_addr.s_addr, s, 4); | |
582 | SET_SUBTLV(exts, EXT_NEIGH_ADDR); | |
583 | } | |
584 | break; | |
585 | case ISIS_SUBTLV_LOCAL_IPADDR6: | |
586 | if (subtlv_len != ISIS_SUBTLV_IPV6_ADDR_SIZE) { | |
587 | sbuf_push(log, indent, | |
588 | "TLV size does not match expected size for Local IPv6 address!\n"); | |
589 | } else { | |
590 | stream_get(&exts->local_addr6, s, 16); | |
591 | SET_SUBTLV(exts, EXT_LOCAL_ADDR6); | |
592 | } | |
593 | break; | |
594 | case ISIS_SUBTLV_RMT_IPADDR6: | |
595 | if (subtlv_len != ISIS_SUBTLV_IPV6_ADDR_SIZE) { | |
596 | sbuf_push(log, indent, | |
597 | "TLV size does not match expected size for Remote IPv6 address!\n"); | |
598 | } else { | |
599 | stream_get(&exts->neigh_addr6, s, 16); | |
600 | SET_SUBTLV(exts, EXT_NEIGH_ADDR6); | |
601 | } | |
602 | break; | |
603 | case ISIS_SUBTLV_MAX_BW: | |
604 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
605 | sbuf_push(log, indent, | |
606 | "TLV size does not match expected size for Maximum Bandwidth!\n"); | |
607 | } else { | |
608 | exts->max_bw = stream_getf(s); | |
609 | SET_SUBTLV(exts, EXT_MAX_BW); | |
610 | } | |
611 | break; | |
612 | case ISIS_SUBTLV_MAX_RSV_BW: | |
613 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
614 | sbuf_push(log, indent, | |
615 | "TLV size does not match expected size for Maximum Reservable Bandwidth!\n"); | |
616 | } else { | |
617 | exts->max_rsv_bw = stream_getf(s); | |
618 | SET_SUBTLV(exts, EXT_MAX_RSV_BW); | |
619 | } | |
620 | break; | |
621 | case ISIS_SUBTLV_UNRSV_BW: | |
622 | if (subtlv_len != ISIS_SUBTLV_UNRSV_BW_SIZE) { | |
623 | sbuf_push(log, indent, | |
624 | "TLV size does not match expected size for Unreserved Bandwidth!\n"); | |
625 | } else { | |
626 | for (int i = 0; i < MAX_CLASS_TYPE; i++) | |
627 | exts->unrsv_bw[i] = stream_getf(s); | |
628 | SET_SUBTLV(exts, EXT_UNRSV_BW); | |
629 | } | |
630 | break; | |
631 | case ISIS_SUBTLV_TE_METRIC: | |
632 | if (subtlv_len != ISIS_SUBTLV_TE_METRIC_SIZE) { | |
633 | sbuf_push(log, indent, | |
634 | "TLV size does not match expected size for Traffic Engineering Metric!\n"); | |
635 | } else { | |
636 | exts->te_metric = stream_get3(s); | |
637 | SET_SUBTLV(exts, EXT_TE_METRIC); | |
638 | } | |
639 | break; | |
640 | case ISIS_SUBTLV_RAS: | |
641 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
642 | sbuf_push(log, indent, | |
643 | "TLV size does not match expected size for Remote AS number!\n"); | |
644 | } else { | |
645 | exts->remote_as = stream_getl(s); | |
646 | SET_SUBTLV(exts, EXT_RMT_AS); | |
647 | } | |
648 | break; | |
649 | case ISIS_SUBTLV_RIP: | |
650 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
651 | sbuf_push(log, indent, | |
652 | "TLV size does not match expected size for Remote ASBR IP Address!\n"); | |
653 | } else { | |
654 | stream_get(&exts->remote_ip.s_addr, s, 4); | |
655 | SET_SUBTLV(exts, EXT_RMT_IP); | |
656 | } | |
657 | break; | |
658 | /* Extended Metrics as defined in RFC 7810 */ | |
659 | case ISIS_SUBTLV_AV_DELAY: | |
660 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
661 | sbuf_push(log, indent, | |
662 | "TLV size does not match expected size for Average Link Delay!\n"); | |
663 | } else { | |
664 | exts->delay = stream_getl(s); | |
665 | SET_SUBTLV(exts, EXT_DELAY); | |
666 | } | |
667 | break; | |
668 | case ISIS_SUBTLV_MM_DELAY: | |
669 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
670 | sbuf_push(log, indent, | |
671 | "TLV size does not match expected size for Min/Max Link Delay!\n"); | |
672 | } else { | |
673 | exts->min_delay = stream_getl(s); | |
674 | exts->max_delay = stream_getl(s); | |
675 | SET_SUBTLV(exts, EXT_MM_DELAY); | |
676 | } | |
677 | break; | |
678 | case ISIS_SUBTLV_DELAY_VAR: | |
679 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
680 | sbuf_push(log, indent, | |
681 | "TLV size does not match expected size for Delay Variation!\n"); | |
682 | } else { | |
683 | exts->delay_var = stream_getl(s); | |
684 | SET_SUBTLV(exts, EXT_DELAY_VAR); | |
685 | } | |
686 | break; | |
687 | case ISIS_SUBTLV_PKT_LOSS: | |
688 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
689 | sbuf_push(log, indent, | |
690 | "TLV size does not match expected size for Link Packet Loss!\n"); | |
691 | } else { | |
692 | exts->pkt_loss = stream_getl(s); | |
693 | SET_SUBTLV(exts, EXT_PKT_LOSS); | |
694 | } | |
695 | break; | |
696 | case ISIS_SUBTLV_RES_BW: | |
697 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
698 | sbuf_push(log, indent, | |
699 | "TLV size does not match expected size for Unidirectional Residual Bandwidth!\n"); | |
700 | } else { | |
701 | exts->res_bw = stream_getf(s); | |
702 | SET_SUBTLV(exts, EXT_RES_BW); | |
703 | } | |
704 | break; | |
705 | case ISIS_SUBTLV_AVA_BW: | |
706 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
707 | sbuf_push(log, indent, | |
708 | "TLV size does not match expected size for Unidirectional Available Bandwidth!\n"); | |
709 | } else { | |
710 | exts->ava_bw = stream_getf(s); | |
711 | SET_SUBTLV(exts, EXT_AVA_BW); | |
712 | } | |
713 | break; | |
714 | case ISIS_SUBTLV_USE_BW: | |
715 | if (subtlv_len != ISIS_SUBTLV_DEF_SIZE) { | |
716 | sbuf_push(log, indent, | |
717 | "TLV size does not match expected size for Unidirectional Utilized Bandwidth!\n"); | |
718 | } else { | |
719 | exts->use_bw = stream_getf(s); | |
720 | SET_SUBTLV(exts, EXT_USE_BW); | |
721 | } | |
722 | break; | |
723 | /* Segment Routing Adjacency */ | |
724 | case ISIS_SUBTLV_ADJ_SID: | |
725 | if (subtlv_len != ISIS_SUBTLV_ADJ_SID_SIZE | |
726 | && subtlv_len != ISIS_SUBTLV_ADJ_SID_SIZE + 1) { | |
727 | sbuf_push(log, indent, | |
728 | "TLV size does not match expected size for Adjacency SID!\n"); | |
729 | } else { | |
730 | struct isis_adj_sid *adj; | |
731 | ||
732 | adj = XCALLOC(MTYPE_ISIS_SUBTLV, | |
733 | sizeof(struct isis_adj_sid)); | |
734 | adj->flags = stream_getc(s); | |
735 | adj->weight = stream_getc(s); | |
736 | if (adj->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) { | |
737 | adj->sid = stream_get3(s); | |
738 | adj->sid &= MPLS_LABEL_VALUE_MASK; | |
739 | } else { | |
740 | adj->sid = stream_getl(s); | |
741 | } | |
742 | if (mtid == ISIS_MT_IPV4_UNICAST) | |
743 | adj->family = AF_INET; | |
744 | if (mtid == ISIS_MT_IPV6_UNICAST) | |
745 | adj->family = AF_INET6; | |
746 | append_item(&exts->adj_sid, | |
747 | (struct isis_item *)adj); | |
748 | SET_SUBTLV(exts, EXT_ADJ_SID); | |
749 | } | |
750 | break; | |
751 | case ISIS_SUBTLV_LAN_ADJ_SID: | |
752 | if (subtlv_len != ISIS_SUBTLV_LAN_ADJ_SID_SIZE | |
753 | && subtlv_len != ISIS_SUBTLV_LAN_ADJ_SID_SIZE + 1) { | |
754 | sbuf_push(log, indent, | |
755 | "TLV size does not match expected size for LAN-Adjacency SID!\n"); | |
756 | } else { | |
757 | struct isis_lan_adj_sid *lan; | |
758 | ||
759 | lan = XCALLOC(MTYPE_ISIS_SUBTLV, | |
760 | sizeof(struct isis_lan_adj_sid)); | |
761 | lan->flags = stream_getc(s); | |
762 | lan->weight = stream_getc(s); | |
763 | stream_get(&(lan->neighbor_id), s, | |
764 | ISIS_SYS_ID_LEN); | |
765 | if (lan->flags & EXT_SUBTLV_LINK_ADJ_SID_VFLG) { | |
766 | lan->sid = stream_get3(s); | |
767 | lan->sid &= MPLS_LABEL_VALUE_MASK; | |
768 | } else { | |
769 | lan->sid = stream_getl(s); | |
770 | } | |
771 | if (mtid == ISIS_MT_IPV4_UNICAST) | |
772 | lan->family = AF_INET; | |
773 | if (mtid == ISIS_MT_IPV6_UNICAST) | |
774 | lan->family = AF_INET6; | |
775 | append_item(&exts->lan_sid, | |
776 | (struct isis_item *)lan); | |
777 | SET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
778 | } | |
779 | break; | |
780 | default: | |
781 | /* Skip unknown TLV */ | |
782 | stream_forward_getp(s, subtlv_len); | |
783 | break; | |
784 | } | |
785 | sum += subtlv_len + ISIS_SUBTLV_HDR_SIZE; | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
791 | /* Functions for Sub-TLV 3 SR Prefix-SID */ | |
bd507085 CF |
792 | static struct isis_item *copy_item_prefix_sid(struct isis_item *i) |
793 | { | |
794 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
795 | struct isis_prefix_sid *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
796 | ||
797 | rv->flags = sid->flags; | |
798 | rv->algorithm = sid->algorithm; | |
799 | rv->value = sid->value; | |
800 | return (struct isis_item *)rv; | |
801 | } | |
802 | ||
803 | static void format_item_prefix_sid(uint16_t mtid, struct isis_item *i, | |
804 | struct sbuf *buf, int indent) | |
805 | { | |
806 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
807 | ||
1b3f47d0 | 808 | sbuf_push(buf, indent, "SR Prefix-SID "); |
bd507085 | 809 | if (sid->flags & ISIS_PREFIX_SID_VALUE) { |
1b3f47d0 | 810 | sbuf_push(buf, 0, "Label: %" PRIu32 ", ", sid->value); |
bd507085 | 811 | } else { |
1b3f47d0 | 812 | sbuf_push(buf, 0, "Index: %" PRIu32 ", ", sid->value); |
bd507085 | 813 | } |
1b3f47d0 OD |
814 | sbuf_push(buf, 0, "Algorithm: %" PRIu8 ", ", sid->algorithm); |
815 | sbuf_push(buf, 0, "Flags:%s%s%s%s%s%s\n", | |
816 | sid->flags & ISIS_PREFIX_SID_READVERTISED ? " READVERTISED" | |
817 | : "", | |
818 | sid->flags & ISIS_PREFIX_SID_NODE ? " NODE" : "", | |
819 | sid->flags & ISIS_PREFIX_SID_NO_PHP ? " NO-PHP" : " PHP", | |
820 | sid->flags & ISIS_PREFIX_SID_EXPLICIT_NULL ? " EXPLICIT-NULL" | |
821 | : "", | |
822 | sid->flags & ISIS_PREFIX_SID_VALUE ? " VALUE" : "", | |
823 | sid->flags & ISIS_PREFIX_SID_LOCAL ? " LOCAL" : ""); | |
bd507085 CF |
824 | } |
825 | ||
826 | static void free_item_prefix_sid(struct isis_item *i) | |
827 | { | |
828 | XFREE(MTYPE_ISIS_SUBTLV, i); | |
829 | } | |
830 | ||
831 | static int pack_item_prefix_sid(struct isis_item *i, struct stream *s) | |
832 | { | |
833 | struct isis_prefix_sid *sid = (struct isis_prefix_sid *)i; | |
834 | ||
835 | uint8_t size = (sid->flags & ISIS_PREFIX_SID_VALUE) ? 5 : 6; | |
836 | ||
837 | if (STREAM_WRITEABLE(s) < size) | |
838 | return 1; | |
839 | ||
840 | stream_putc(s, sid->flags); | |
841 | stream_putc(s, sid->algorithm); | |
842 | ||
843 | if (sid->flags & ISIS_PREFIX_SID_VALUE) { | |
844 | stream_put3(s, sid->value); | |
845 | } else { | |
846 | stream_putl(s, sid->value); | |
847 | } | |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
852 | static int unpack_item_prefix_sid(uint16_t mtid, uint8_t len, struct stream *s, | |
853 | struct sbuf *log, void *dest, int indent) | |
854 | { | |
855 | struct isis_subtlvs *subtlvs = dest; | |
3e300703 DL |
856 | struct isis_prefix_sid sid = { |
857 | }; | |
bd507085 CF |
858 | |
859 | sbuf_push(log, indent, "Unpacking SR Prefix-SID...\n"); | |
860 | ||
861 | if (len < 5) { | |
862 | sbuf_push(log, indent, | |
863 | "Not enough data left. (expected 5 or more bytes, got %" PRIu8 ")\n", | |
864 | len); | |
865 | return 1; | |
866 | } | |
867 | ||
868 | sid.flags = stream_getc(s); | |
8b1e3453 RW |
869 | if (!!(sid.flags & ISIS_PREFIX_SID_VALUE) |
870 | != !!(sid.flags & ISIS_PREFIX_SID_LOCAL)) { | |
1b3f47d0 | 871 | sbuf_push(log, indent, "Flags implausible: Local Flag needs to match Value Flag\n"); |
8b1e3453 | 872 | return 1; |
bd507085 CF |
873 | } |
874 | ||
875 | sid.algorithm = stream_getc(s); | |
876 | ||
1b3f47d0 OD |
877 | uint8_t expected_size = (sid.flags & ISIS_PREFIX_SID_VALUE) |
878 | ? ISIS_SUBTLV_PREFIX_SID_SIZE | |
879 | : ISIS_SUBTLV_PREFIX_SID_SIZE + 1; | |
bd507085 CF |
880 | if (len != expected_size) { |
881 | sbuf_push(log, indent, | |
882 | "TLV size differs from expected size. " | |
883 | "(expected %u but got %" PRIu8 ")\n", | |
884 | expected_size, len); | |
885 | return 1; | |
886 | } | |
887 | ||
888 | if (sid.flags & ISIS_PREFIX_SID_VALUE) { | |
889 | sid.value = stream_get3(s); | |
1b3f47d0 | 890 | sid.value &= MPLS_LABEL_VALUE_MASK; |
bd507085 CF |
891 | } else { |
892 | sid.value = stream_getl(s); | |
893 | } | |
894 | ||
895 | format_item_prefix_sid(mtid, (struct isis_item *)&sid, log, indent + 2); | |
896 | append_item(&subtlvs->prefix_sids, copy_item_prefix_sid((struct isis_item *)&sid)); | |
897 | return 0; | |
898 | } | |
899 | ||
7ef5fefc CF |
900 | /* Functions for Sub-TVL ??? IPv6 Source Prefix */ |
901 | ||
902 | static struct prefix_ipv6 *copy_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p) | |
903 | { | |
904 | if (!p) | |
905 | return NULL; | |
906 | ||
907 | struct prefix_ipv6 *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
908 | rv->family = p->family; | |
909 | rv->prefixlen = p->prefixlen; | |
910 | memcpy(&rv->prefix, &p->prefix, sizeof(rv->prefix)); | |
911 | return rv; | |
912 | } | |
913 | ||
914 | static void format_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p, | |
915 | struct sbuf *buf, int indent) | |
916 | { | |
917 | if (!p) | |
918 | return; | |
919 | ||
920 | char prefixbuf[PREFIX2STR_BUFFER]; | |
921 | sbuf_push(buf, indent, "IPv6 Source Prefix: %s\n", | |
922 | prefix2str(p, prefixbuf, sizeof(prefixbuf))); | |
923 | } | |
924 | ||
925 | static int pack_subtlv_ipv6_source_prefix(struct prefix_ipv6 *p, | |
926 | struct stream *s) | |
927 | { | |
928 | if (!p) | |
929 | return 0; | |
930 | ||
931 | if (STREAM_WRITEABLE(s) < 3 + (unsigned)PSIZE(p->prefixlen)) | |
932 | return 1; | |
933 | ||
934 | stream_putc(s, ISIS_SUBTLV_IPV6_SOURCE_PREFIX); | |
935 | stream_putc(s, 1 + PSIZE(p->prefixlen)); | |
936 | stream_putc(s, p->prefixlen); | |
937 | stream_put(s, &p->prefix, PSIZE(p->prefixlen)); | |
938 | return 0; | |
939 | } | |
940 | ||
941 | static int unpack_subtlv_ipv6_source_prefix(enum isis_tlv_context context, | |
942 | uint8_t tlv_type, uint8_t tlv_len, | |
943 | struct stream *s, struct sbuf *log, | |
944 | void *dest, int indent) | |
945 | { | |
946 | struct isis_subtlvs *subtlvs = dest; | |
947 | struct prefix_ipv6 p = { | |
948 | .family = AF_INET6, | |
949 | }; | |
950 | ||
951 | sbuf_push(log, indent, "Unpacking IPv6 Source Prefix Sub-TLV...\n"); | |
952 | ||
953 | if (tlv_len < 1) { | |
98c5bc15 CF |
954 | sbuf_push(log, indent, |
955 | "Not enough data left. (expected 1 or more bytes, got %" PRIu8 ")\n", | |
956 | tlv_len); | |
7ef5fefc CF |
957 | return 1; |
958 | } | |
959 | ||
960 | p.prefixlen = stream_getc(s); | |
961 | if (p.prefixlen > 128) { | |
1b3f47d0 | 962 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv6\n", |
7ef5fefc CF |
963 | p.prefixlen); |
964 | return 1; | |
965 | } | |
966 | ||
967 | if (tlv_len != 1 + PSIZE(p.prefixlen)) { | |
968 | sbuf_push( | |
969 | log, indent, | |
970 | "TLV size differs from expected size for the prefixlen. " | |
971 | "(expected %u but got %" PRIu8 ")\n", | |
972 | 1 + PSIZE(p.prefixlen), tlv_len); | |
973 | return 1; | |
974 | } | |
975 | ||
976 | stream_get(&p.prefix, s, PSIZE(p.prefixlen)); | |
977 | ||
978 | if (subtlvs->source_prefix) { | |
979 | sbuf_push( | |
980 | log, indent, | |
981 | "WARNING: source prefix Sub-TLV present multiple times.\n"); | |
982 | /* Ignore all but first occurrence of the source prefix Sub-TLV | |
983 | */ | |
984 | return 0; | |
985 | } | |
986 | ||
987 | subtlvs->source_prefix = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(p)); | |
988 | memcpy(subtlvs->source_prefix, &p, sizeof(p)); | |
989 | return 0; | |
990 | } | |
1b3f47d0 | 991 | |
bd507085 CF |
992 | static struct isis_item *copy_item(enum isis_tlv_context context, |
993 | enum isis_tlv_type type, | |
994 | struct isis_item *item); | |
995 | static void copy_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
996 | struct isis_item_list *src, struct isis_item_list *dest); | |
997 | static void format_items_(uint16_t mtid, enum isis_tlv_context context, | |
998 | enum isis_tlv_type type, struct isis_item_list *items, | |
999 | struct sbuf *buf, int indent); | |
1000 | #define format_items(...) format_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) | |
1001 | static void free_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
1002 | struct isis_item_list *items); | |
1003 | static int pack_items_(uint16_t mtid, enum isis_tlv_context context, | |
1004 | enum isis_tlv_type type, struct isis_item_list *items, | |
1005 | struct stream *s, struct isis_tlvs **fragment_tlvs, | |
2b64873d | 1006 | const struct pack_order_entry *pe, |
bd507085 CF |
1007 | struct isis_tlvs *(*new_fragment)(struct list *l), |
1008 | struct list *new_fragment_arg); | |
1009 | #define pack_items(...) pack_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) | |
7ef5fefc CF |
1010 | |
1011 | /* Functions related to subtlvs */ | |
1012 | ||
bd507085 | 1013 | static struct isis_subtlvs *isis_alloc_subtlvs(enum isis_tlv_context context) |
7ef5fefc CF |
1014 | { |
1015 | struct isis_subtlvs *result; | |
1016 | ||
1017 | result = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*result)); | |
bd507085 CF |
1018 | result->context = context; |
1019 | ||
1020 | init_item_list(&result->prefix_sids); | |
7ef5fefc CF |
1021 | |
1022 | return result; | |
1023 | } | |
1024 | ||
1025 | static struct isis_subtlvs *copy_subtlvs(struct isis_subtlvs *subtlvs) | |
1026 | { | |
1027 | if (!subtlvs) | |
1028 | return NULL; | |
1029 | ||
1030 | struct isis_subtlvs *rv = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*rv)); | |
1031 | ||
bd507085 CF |
1032 | rv->context = subtlvs->context; |
1033 | ||
1034 | copy_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, | |
1035 | &subtlvs->prefix_sids, &rv->prefix_sids); | |
1036 | ||
7ef5fefc CF |
1037 | rv->source_prefix = |
1038 | copy_subtlv_ipv6_source_prefix(subtlvs->source_prefix); | |
1039 | return rv; | |
1040 | } | |
1041 | ||
1042 | static void format_subtlvs(struct isis_subtlvs *subtlvs, struct sbuf *buf, | |
1043 | int indent) | |
1044 | { | |
bd507085 CF |
1045 | format_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
1046 | &subtlvs->prefix_sids, buf, indent); | |
1047 | ||
7ef5fefc CF |
1048 | format_subtlv_ipv6_source_prefix(subtlvs->source_prefix, buf, indent); |
1049 | } | |
1050 | ||
1051 | static void isis_free_subtlvs(struct isis_subtlvs *subtlvs) | |
1052 | { | |
1053 | if (!subtlvs) | |
1054 | return; | |
1055 | ||
bd507085 CF |
1056 | free_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
1057 | &subtlvs->prefix_sids); | |
1058 | ||
7ef5fefc CF |
1059 | XFREE(MTYPE_ISIS_SUBTLV, subtlvs->source_prefix); |
1060 | ||
1061 | XFREE(MTYPE_ISIS_SUBTLV, subtlvs); | |
1062 | } | |
1063 | ||
1064 | static int pack_subtlvs(struct isis_subtlvs *subtlvs, struct stream *s) | |
1065 | { | |
1066 | int rv; | |
1067 | size_t subtlv_len_pos = stream_get_endp(s); | |
1068 | ||
1069 | if (STREAM_WRITEABLE(s) < 1) | |
1070 | return 1; | |
1071 | ||
1072 | stream_putc(s, 0); /* Put 0 as subtlvs length, filled in later */ | |
1073 | ||
bd507085 CF |
1074 | rv = pack_items(subtlvs->context, ISIS_SUBTLV_PREFIX_SID, |
1075 | &subtlvs->prefix_sids, s, NULL, NULL, NULL, NULL); | |
1076 | if (rv) | |
1077 | return rv; | |
1078 | ||
7ef5fefc CF |
1079 | rv = pack_subtlv_ipv6_source_prefix(subtlvs->source_prefix, s); |
1080 | if (rv) | |
1081 | return rv; | |
1082 | ||
1083 | size_t subtlv_len = stream_get_endp(s) - subtlv_len_pos - 1; | |
1084 | if (subtlv_len > 255) | |
1085 | return 1; | |
1086 | ||
1087 | stream_putc_at(s, subtlv_len_pos, subtlv_len); | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static int unpack_tlvs(enum isis_tlv_context context, size_t avail_len, | |
1092 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 1093 | int indent, bool *unpacked_known_tlvs); |
7ef5fefc CF |
1094 | |
1095 | /* Functions related to TLVs 1 Area Addresses */ | |
1096 | ||
1097 | static struct isis_item *copy_item_area_address(struct isis_item *i) | |
1098 | { | |
1099 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
841791b6 | 1100 | struct isis_area_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1101 | |
1102 | rv->len = addr->len; | |
1103 | memcpy(rv->addr, addr->addr, addr->len); | |
1104 | return (struct isis_item *)rv; | |
1105 | } | |
1106 | ||
1107 | static void format_item_area_address(uint16_t mtid, struct isis_item *i, | |
1108 | struct sbuf *buf, int indent) | |
1109 | { | |
1110 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
1111 | ||
1112 | sbuf_push(buf, indent, "Area Address: %s\n", | |
1113 | isonet_print(addr->addr, addr->len)); | |
1114 | } | |
1115 | ||
1116 | static void free_item_area_address(struct isis_item *i) | |
1117 | { | |
841791b6 | 1118 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1119 | } |
1120 | ||
1121 | static int pack_item_area_address(struct isis_item *i, struct stream *s) | |
1122 | { | |
1123 | struct isis_area_address *addr = (struct isis_area_address *)i; | |
1124 | ||
1125 | if (STREAM_WRITEABLE(s) < (unsigned)1 + addr->len) | |
1126 | return 1; | |
1127 | stream_putc(s, addr->len); | |
1128 | stream_put(s, addr->addr, addr->len); | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | static int unpack_item_area_address(uint16_t mtid, uint8_t len, | |
1133 | struct stream *s, struct sbuf *log, | |
1134 | void *dest, int indent) | |
1135 | { | |
1136 | struct isis_tlvs *tlvs = dest; | |
1137 | struct isis_area_address *rv = NULL; | |
1138 | ||
1139 | sbuf_push(log, indent, "Unpack area address...\n"); | |
1140 | if (len < 1) { | |
1141 | sbuf_push( | |
1142 | log, indent, | |
1143 | "Not enough data left. (Expected 1 byte of address length, got %" PRIu8 | |
1144 | ")\n", | |
1145 | len); | |
1146 | goto out; | |
1147 | } | |
1148 | ||
841791b6 | 1149 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1150 | rv->len = stream_getc(s); |
1151 | ||
1152 | if (len < 1 + rv->len) { | |
1153 | sbuf_push(log, indent, "Not enough data left. (Expected %" PRIu8 | |
1154 | " bytes of address, got %" PRIu8 ")\n", | |
1155 | rv->len, len - 1); | |
1156 | goto out; | |
1157 | } | |
1158 | ||
1159 | if (rv->len < 1 || rv->len > 20) { | |
1160 | sbuf_push(log, indent, | |
1161 | "Implausible area address length %" PRIu8 "\n", | |
1162 | rv->len); | |
1163 | goto out; | |
1164 | } | |
1165 | ||
1166 | stream_get(rv->addr, s, rv->len); | |
1167 | ||
1168 | format_item_area_address(ISIS_MT_IPV4_UNICAST, (struct isis_item *)rv, | |
1169 | log, indent + 2); | |
1170 | append_item(&tlvs->area_addresses, (struct isis_item *)rv); | |
1171 | return 0; | |
1172 | out: | |
841791b6 | 1173 | XFREE(MTYPE_ISIS_TLV, rv); |
7ef5fefc CF |
1174 | return 1; |
1175 | } | |
1176 | ||
1177 | /* Functions related to TLV 2 (Old-Style) IS Reach */ | |
1178 | static struct isis_item *copy_item_oldstyle_reach(struct isis_item *i) | |
1179 | { | |
1180 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
841791b6 | 1181 | struct isis_oldstyle_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1182 | |
1183 | memcpy(rv->id, r->id, 7); | |
1184 | rv->metric = r->metric; | |
1185 | return (struct isis_item *)rv; | |
1186 | } | |
1187 | ||
1188 | static void format_item_oldstyle_reach(uint16_t mtid, struct isis_item *i, | |
1189 | struct sbuf *buf, int indent) | |
1190 | { | |
1191 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
1192 | ||
1193 | sbuf_push(buf, indent, "IS Reachability: %s (Metric: %" PRIu8 ")\n", | |
1194 | isis_format_id(r->id, 7), r->metric); | |
1195 | } | |
1196 | ||
1197 | static void free_item_oldstyle_reach(struct isis_item *i) | |
1198 | { | |
841791b6 | 1199 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1200 | } |
1201 | ||
1202 | static int pack_item_oldstyle_reach(struct isis_item *i, struct stream *s) | |
1203 | { | |
1204 | struct isis_oldstyle_reach *r = (struct isis_oldstyle_reach *)i; | |
1205 | ||
1206 | if (STREAM_WRITEABLE(s) < 11) | |
1207 | return 1; | |
1208 | ||
1209 | stream_putc(s, r->metric); | |
1210 | stream_putc(s, 0x80); /* delay metric - unsupported */ | |
1211 | stream_putc(s, 0x80); /* expense metric - unsupported */ | |
1212 | stream_putc(s, 0x80); /* error metric - unsupported */ | |
1213 | stream_put(s, r->id, 7); | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int unpack_item_oldstyle_reach(uint16_t mtid, uint8_t len, | |
1219 | struct stream *s, struct sbuf *log, | |
1220 | void *dest, int indent) | |
1221 | { | |
1222 | struct isis_tlvs *tlvs = dest; | |
1223 | ||
1224 | sbuf_push(log, indent, "Unpack oldstyle reach...\n"); | |
1225 | if (len < 11) { | |
1226 | sbuf_push( | |
1227 | log, indent, | |
1228 | "Not enough data left.(Expected 11 bytes of reach information, got %" PRIu8 | |
1229 | ")\n", | |
1230 | len); | |
1231 | return 1; | |
1232 | } | |
1233 | ||
841791b6 | 1234 | struct isis_oldstyle_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1235 | rv->metric = stream_getc(s); |
1236 | if ((rv->metric & 0x3f) != rv->metric) { | |
1237 | sbuf_push(log, indent, "Metric has unplausible format\n"); | |
1238 | rv->metric &= 0x3f; | |
1239 | } | |
1240 | stream_forward_getp(s, 3); /* Skip other metrics */ | |
1241 | stream_get(rv->id, s, 7); | |
1242 | ||
1243 | format_item_oldstyle_reach(mtid, (struct isis_item *)rv, log, | |
1244 | indent + 2); | |
1245 | append_item(&tlvs->oldstyle_reach, (struct isis_item *)rv); | |
1246 | return 0; | |
1247 | } | |
1248 | ||
1249 | /* Functions related to TLV 6 LAN Neighbors */ | |
1250 | static struct isis_item *copy_item_lan_neighbor(struct isis_item *i) | |
1251 | { | |
1252 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
841791b6 | 1253 | struct isis_lan_neighbor *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1254 | |
1255 | memcpy(rv->mac, n->mac, 6); | |
1256 | return (struct isis_item *)rv; | |
1257 | } | |
1258 | ||
1259 | static void format_item_lan_neighbor(uint16_t mtid, struct isis_item *i, | |
1260 | struct sbuf *buf, int indent) | |
1261 | { | |
1262 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
1263 | ||
1264 | sbuf_push(buf, indent, "LAN Neighbor: %s\n", isis_format_id(n->mac, 6)); | |
1265 | } | |
1266 | ||
1267 | static void free_item_lan_neighbor(struct isis_item *i) | |
1268 | { | |
841791b6 | 1269 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1270 | } |
1271 | ||
1272 | static int pack_item_lan_neighbor(struct isis_item *i, struct stream *s) | |
1273 | { | |
1274 | struct isis_lan_neighbor *n = (struct isis_lan_neighbor *)i; | |
1275 | ||
1276 | if (STREAM_WRITEABLE(s) < 6) | |
1277 | return 1; | |
1278 | ||
1279 | stream_put(s, n->mac, 6); | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static int unpack_item_lan_neighbor(uint16_t mtid, uint8_t len, | |
1285 | struct stream *s, struct sbuf *log, | |
1286 | void *dest, int indent) | |
1287 | { | |
1288 | struct isis_tlvs *tlvs = dest; | |
1289 | ||
1290 | sbuf_push(log, indent, "Unpack LAN neighbor...\n"); | |
1291 | if (len < 6) { | |
1292 | sbuf_push( | |
1293 | log, indent, | |
1294 | "Not enough data left.(Expected 6 bytes of mac, got %" PRIu8 | |
1295 | ")\n", | |
1296 | len); | |
1297 | return 1; | |
1298 | } | |
1299 | ||
841791b6 | 1300 | struct isis_lan_neighbor *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1301 | stream_get(rv->mac, s, 6); |
1302 | ||
1303 | format_item_lan_neighbor(mtid, (struct isis_item *)rv, log, indent + 2); | |
1304 | append_item(&tlvs->lan_neighbor, (struct isis_item *)rv); | |
1305 | return 0; | |
1306 | } | |
1307 | ||
1308 | /* Functions related to TLV 9 LSP Entry */ | |
1309 | static struct isis_item *copy_item_lsp_entry(struct isis_item *i) | |
1310 | { | |
1311 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
841791b6 | 1312 | struct isis_lsp_entry *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1313 | |
1314 | rv->rem_lifetime = e->rem_lifetime; | |
1315 | memcpy(rv->id, e->id, sizeof(rv->id)); | |
1316 | rv->seqno = e->seqno; | |
1317 | rv->checksum = e->checksum; | |
1318 | ||
1319 | return (struct isis_item *)rv; | |
1320 | } | |
1321 | ||
1322 | static void format_item_lsp_entry(uint16_t mtid, struct isis_item *i, | |
1323 | struct sbuf *buf, int indent) | |
1324 | { | |
1325 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
1326 | ||
996c9314 LB |
1327 | sbuf_push(buf, indent, |
1328 | "LSP Entry: %s, seq 0x%08" PRIx32 ", cksum 0x%04" PRIx16 | |
1329 | ", lifetime %" PRIu16 "s\n", | |
7ef5fefc CF |
1330 | isis_format_id(e->id, 8), e->seqno, e->checksum, |
1331 | e->rem_lifetime); | |
1332 | } | |
1333 | ||
1334 | static void free_item_lsp_entry(struct isis_item *i) | |
1335 | { | |
841791b6 | 1336 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1337 | } |
1338 | ||
1339 | static int pack_item_lsp_entry(struct isis_item *i, struct stream *s) | |
1340 | { | |
1341 | struct isis_lsp_entry *e = (struct isis_lsp_entry *)i; | |
1342 | ||
1343 | if (STREAM_WRITEABLE(s) < 16) | |
1344 | return 1; | |
1345 | ||
1346 | stream_putw(s, e->rem_lifetime); | |
1347 | stream_put(s, e->id, 8); | |
1348 | stream_putl(s, e->seqno); | |
1349 | stream_putw(s, e->checksum); | |
1350 | ||
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | static int unpack_item_lsp_entry(uint16_t mtid, uint8_t len, struct stream *s, | |
1355 | struct sbuf *log, void *dest, int indent) | |
1356 | { | |
1357 | struct isis_tlvs *tlvs = dest; | |
1358 | ||
1359 | sbuf_push(log, indent, "Unpack LSP entry...\n"); | |
1360 | if (len < 16) { | |
1361 | sbuf_push( | |
1362 | log, indent, | |
1363 | "Not enough data left. (Expected 16 bytes of LSP info, got %" PRIu8, | |
1364 | len); | |
1365 | return 1; | |
1366 | } | |
1367 | ||
841791b6 | 1368 | struct isis_lsp_entry *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1369 | rv->rem_lifetime = stream_getw(s); |
1370 | stream_get(rv->id, s, 8); | |
1371 | rv->seqno = stream_getl(s); | |
1372 | rv->checksum = stream_getw(s); | |
1373 | ||
1374 | format_item_lsp_entry(mtid, (struct isis_item *)rv, log, indent + 2); | |
1375 | append_item(&tlvs->lsp_entries, (struct isis_item *)rv); | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | /* Functions related to TLVs 22/222 Extended Reach/MT Reach */ | |
1380 | ||
1381 | static struct isis_item *copy_item_extended_reach(struct isis_item *i) | |
1382 | { | |
1383 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
841791b6 | 1384 | struct isis_extended_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1385 | |
1386 | memcpy(rv->id, r->id, 7); | |
1387 | rv->metric = r->metric; | |
1388 | ||
1b3f47d0 OD |
1389 | if (r->subtlvs) |
1390 | rv->subtlvs = copy_item_ext_subtlvs(r->subtlvs, -1); | |
7ef5fefc CF |
1391 | |
1392 | return (struct isis_item *)rv; | |
1393 | } | |
1394 | ||
1395 | static void format_item_extended_reach(uint16_t mtid, struct isis_item *i, | |
1396 | struct sbuf *buf, int indent) | |
1397 | { | |
1398 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
1399 | ||
1400 | sbuf_push(buf, indent, "%s Reachability: %s (Metric: %u)", | |
1401 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT", | |
1402 | isis_format_id(r->id, 7), r->metric); | |
1403 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
1404 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
1405 | sbuf_push(buf, 0, "\n"); | |
1406 | ||
1b3f47d0 OD |
1407 | if (r->subtlvs) |
1408 | format_item_ext_subtlvs(r->subtlvs, buf, indent + 2, mtid); | |
7ef5fefc CF |
1409 | } |
1410 | ||
1411 | static void free_item_extended_reach(struct isis_item *i) | |
1412 | { | |
1413 | struct isis_extended_reach *item = (struct isis_extended_reach *)i; | |
1b3f47d0 OD |
1414 | if (item->subtlvs != NULL) |
1415 | free_item_ext_subtlvs(item->subtlvs); | |
841791b6 | 1416 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
1417 | } |
1418 | ||
1419 | static int pack_item_extended_reach(struct isis_item *i, struct stream *s) | |
1420 | { | |
1421 | struct isis_extended_reach *r = (struct isis_extended_reach *)i; | |
1b3f47d0 OD |
1422 | size_t len; |
1423 | size_t len_pos; | |
7ef5fefc | 1424 | |
1b3f47d0 | 1425 | if (STREAM_WRITEABLE(s) < 11 + ISIS_SUBTLV_MAX_SIZE) |
7ef5fefc | 1426 | return 1; |
1b3f47d0 | 1427 | |
7ef5fefc CF |
1428 | stream_put(s, r->id, sizeof(r->id)); |
1429 | stream_put3(s, r->metric); | |
1b3f47d0 OD |
1430 | len_pos = stream_get_endp(s); |
1431 | /* Real length will be adjust after adding subTLVs */ | |
1432 | stream_putc(s, 11); | |
1433 | if (r->subtlvs) | |
1434 | pack_item_ext_subtlvs(r->subtlvs, s); | |
1435 | /* Adjust length */ | |
1436 | len = stream_get_endp(s) - len_pos - 1; | |
1437 | stream_putc_at(s, len_pos, len); | |
7ef5fefc CF |
1438 | return 0; |
1439 | } | |
1440 | ||
1441 | static int unpack_item_extended_reach(uint16_t mtid, uint8_t len, | |
1442 | struct stream *s, struct sbuf *log, | |
1443 | void *dest, int indent) | |
1444 | { | |
1445 | struct isis_tlvs *tlvs = dest; | |
1446 | struct isis_extended_reach *rv = NULL; | |
1447 | uint8_t subtlv_len; | |
1448 | struct isis_item_list *items; | |
1449 | ||
1450 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
1451 | items = &tlvs->extended_reach; | |
1452 | } else { | |
1453 | items = isis_get_mt_items(&tlvs->mt_reach, mtid); | |
1454 | } | |
1455 | ||
1456 | sbuf_push(log, indent, "Unpacking %s reachability...\n", | |
1457 | (mtid == ISIS_MT_IPV4_UNICAST) ? "extended" : "mt"); | |
1458 | ||
1459 | if (len < 11) { | |
98c5bc15 CF |
1460 | sbuf_push(log, indent, |
1461 | "Not enough data left. (expected 11 or more bytes, got %" | |
1462 | PRIu8 ")\n", | |
1463 | len); | |
7ef5fefc CF |
1464 | goto out; |
1465 | } | |
1466 | ||
841791b6 | 1467 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1468 | stream_get(rv->id, s, 7); |
1469 | rv->metric = stream_get3(s); | |
1470 | subtlv_len = stream_getc(s); | |
1471 | ||
7ef5fefc CF |
1472 | if ((size_t)len < ((size_t)11) + subtlv_len) { |
1473 | sbuf_push(log, indent, | |
1474 | "Not enough data left for subtlv size %" PRIu8 | |
1475 | ", there are only %" PRIu8 " bytes left.\n", | |
1476 | subtlv_len, len - 11); | |
1477 | goto out; | |
1478 | } | |
1479 | ||
1480 | sbuf_push(log, indent, "Storing %" PRIu8 " bytes of subtlvs\n", | |
1481 | subtlv_len); | |
1482 | ||
1483 | if (subtlv_len) { | |
1b3f47d0 OD |
1484 | if (unpack_item_ext_subtlvs(mtid, subtlv_len, s, log, rv, |
1485 | indent + 4)) { | |
7ef5fefc CF |
1486 | goto out; |
1487 | } | |
7ef5fefc CF |
1488 | } |
1489 | ||
1b3f47d0 OD |
1490 | format_item_extended_reach(mtid, (struct isis_item *)rv, log, |
1491 | indent + 2); | |
7ef5fefc CF |
1492 | append_item(items, (struct isis_item *)rv); |
1493 | return 0; | |
1494 | out: | |
1495 | if (rv) | |
1496 | free_item_extended_reach((struct isis_item *)rv); | |
1497 | ||
1498 | return 1; | |
1499 | } | |
1500 | ||
1501 | /* Functions related to TLV 128 (Old-Style) IP Reach */ | |
1502 | static struct isis_item *copy_item_oldstyle_ip_reach(struct isis_item *i) | |
1503 | { | |
1504 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
1505 | struct isis_oldstyle_ip_reach *rv = | |
841791b6 | 1506 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1507 | |
1508 | rv->metric = r->metric; | |
1509 | rv->prefix = r->prefix; | |
1510 | return (struct isis_item *)rv; | |
1511 | } | |
1512 | ||
1513 | static void format_item_oldstyle_ip_reach(uint16_t mtid, struct isis_item *i, | |
1514 | struct sbuf *buf, int indent) | |
1515 | { | |
1516 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
1517 | char prefixbuf[PREFIX2STR_BUFFER]; | |
1518 | ||
1519 | sbuf_push(buf, indent, "IP Reachability: %s (Metric: %" PRIu8 ")\n", | |
996c9314 LB |
1520 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), |
1521 | r->metric); | |
7ef5fefc CF |
1522 | } |
1523 | ||
1524 | static void free_item_oldstyle_ip_reach(struct isis_item *i) | |
1525 | { | |
841791b6 | 1526 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1527 | } |
1528 | ||
1529 | static int pack_item_oldstyle_ip_reach(struct isis_item *i, struct stream *s) | |
1530 | { | |
1531 | struct isis_oldstyle_ip_reach *r = (struct isis_oldstyle_ip_reach *)i; | |
1532 | ||
1533 | if (STREAM_WRITEABLE(s) < 12) | |
1534 | return 1; | |
1535 | ||
1536 | stream_putc(s, r->metric); | |
1537 | stream_putc(s, 0x80); /* delay metric - unsupported */ | |
1538 | stream_putc(s, 0x80); /* expense metric - unsupported */ | |
1539 | stream_putc(s, 0x80); /* error metric - unsupported */ | |
1540 | stream_put(s, &r->prefix.prefix, 4); | |
1541 | ||
1542 | struct in_addr mask; | |
1543 | masklen2ip(r->prefix.prefixlen, &mask); | |
1544 | stream_put(s, &mask, sizeof(mask)); | |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | static int unpack_item_oldstyle_ip_reach(uint16_t mtid, uint8_t len, | |
1550 | struct stream *s, struct sbuf *log, | |
1551 | void *dest, int indent) | |
1552 | { | |
1553 | sbuf_push(log, indent, "Unpack oldstyle ip reach...\n"); | |
1554 | if (len < 12) { | |
1555 | sbuf_push( | |
1556 | log, indent, | |
1557 | "Not enough data left.(Expected 12 bytes of reach information, got %" PRIu8 | |
1558 | ")\n", | |
1559 | len); | |
1560 | return 1; | |
1561 | } | |
1562 | ||
1563 | struct isis_oldstyle_ip_reach *rv = | |
841791b6 | 1564 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1565 | rv->metric = stream_getc(s); |
1566 | if ((rv->metric & 0x7f) != rv->metric) { | |
1567 | sbuf_push(log, indent, "Metric has unplausible format\n"); | |
1568 | rv->metric &= 0x7f; | |
1569 | } | |
1570 | stream_forward_getp(s, 3); /* Skip other metrics */ | |
1571 | rv->prefix.family = AF_INET; | |
1572 | stream_get(&rv->prefix.prefix, s, 4); | |
1573 | ||
1574 | struct in_addr mask; | |
1575 | stream_get(&mask, s, 4); | |
1576 | rv->prefix.prefixlen = ip_masklen(mask); | |
1577 | ||
1578 | format_item_oldstyle_ip_reach(mtid, (struct isis_item *)rv, log, | |
1579 | indent + 2); | |
1580 | append_item(dest, (struct isis_item *)rv); | |
1581 | return 0; | |
1582 | } | |
1583 | ||
1584 | ||
1585 | /* Functions related to TLV 129 protocols supported */ | |
1586 | ||
1587 | static void copy_tlv_protocols_supported(struct isis_protocols_supported *src, | |
1588 | struct isis_protocols_supported *dest) | |
1589 | { | |
1590 | if (!src->protocols || !src->count) | |
1591 | return; | |
1592 | dest->count = src->count; | |
841791b6 | 1593 | dest->protocols = XCALLOC(MTYPE_ISIS_TLV, src->count); |
7ef5fefc CF |
1594 | memcpy(dest->protocols, src->protocols, src->count); |
1595 | } | |
1596 | ||
1597 | static void format_tlv_protocols_supported(struct isis_protocols_supported *p, | |
1598 | struct sbuf *buf, int indent) | |
1599 | { | |
1600 | if (!p || !p->count || !p->protocols) | |
1601 | return; | |
1602 | ||
1603 | sbuf_push(buf, indent, "Protocols Supported: "); | |
1604 | for (uint8_t i = 0; i < p->count; i++) { | |
1605 | sbuf_push(buf, 0, "%s%s", nlpid2str(p->protocols[i]), | |
1606 | (i + 1 < p->count) ? ", " : ""); | |
1607 | } | |
1608 | sbuf_push(buf, 0, "\n"); | |
1609 | } | |
1610 | ||
1611 | static void free_tlv_protocols_supported(struct isis_protocols_supported *p) | |
1612 | { | |
841791b6 | 1613 | XFREE(MTYPE_ISIS_TLV, p->protocols); |
7ef5fefc CF |
1614 | } |
1615 | ||
1616 | static int pack_tlv_protocols_supported(struct isis_protocols_supported *p, | |
1617 | struct stream *s) | |
1618 | { | |
1619 | if (!p || !p->count || !p->protocols) | |
1620 | return 0; | |
1621 | ||
1622 | if (STREAM_WRITEABLE(s) < (unsigned)(p->count + 2)) | |
1623 | return 1; | |
1624 | ||
1625 | stream_putc(s, ISIS_TLV_PROTOCOLS_SUPPORTED); | |
1626 | stream_putc(s, p->count); | |
1627 | stream_put(s, p->protocols, p->count); | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | static int unpack_tlv_protocols_supported(enum isis_tlv_context context, | |
1632 | uint8_t tlv_type, uint8_t tlv_len, | |
1633 | struct stream *s, struct sbuf *log, | |
1634 | void *dest, int indent) | |
1635 | { | |
1636 | struct isis_tlvs *tlvs = dest; | |
1637 | ||
1638 | sbuf_push(log, indent, "Unpacking Protocols Supported TLV...\n"); | |
1639 | if (!tlv_len) { | |
1640 | sbuf_push(log, indent, "WARNING: No protocols included\n"); | |
1641 | return 0; | |
1642 | } | |
1643 | if (tlvs->protocols_supported.protocols) { | |
1644 | sbuf_push( | |
1645 | log, indent, | |
1646 | "WARNING: protocols supported TLV present multiple times.\n"); | |
1647 | stream_forward_getp(s, tlv_len); | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | tlvs->protocols_supported.count = tlv_len; | |
841791b6 | 1652 | tlvs->protocols_supported.protocols = XCALLOC(MTYPE_ISIS_TLV, tlv_len); |
7ef5fefc CF |
1653 | stream_get(tlvs->protocols_supported.protocols, s, tlv_len); |
1654 | ||
1655 | format_tlv_protocols_supported(&tlvs->protocols_supported, log, | |
1656 | indent + 2); | |
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | /* Functions related to TLV 132 IPv4 Interface addresses */ | |
1661 | static struct isis_item *copy_item_ipv4_address(struct isis_item *i) | |
1662 | { | |
1663 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
841791b6 | 1664 | struct isis_ipv4_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1665 | |
1666 | rv->addr = a->addr; | |
1667 | return (struct isis_item *)rv; | |
1668 | } | |
1669 | ||
1670 | static void format_item_ipv4_address(uint16_t mtid, struct isis_item *i, | |
1671 | struct sbuf *buf, int indent) | |
1672 | { | |
1673 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
1674 | char addrbuf[INET_ADDRSTRLEN]; | |
1675 | ||
1676 | inet_ntop(AF_INET, &a->addr, addrbuf, sizeof(addrbuf)); | |
1677 | sbuf_push(buf, indent, "IPv4 Interface Address: %s\n", addrbuf); | |
1678 | } | |
1679 | ||
1680 | static void free_item_ipv4_address(struct isis_item *i) | |
1681 | { | |
841791b6 | 1682 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1683 | } |
1684 | ||
1685 | static int pack_item_ipv4_address(struct isis_item *i, struct stream *s) | |
1686 | { | |
1687 | struct isis_ipv4_address *a = (struct isis_ipv4_address *)i; | |
1688 | ||
1689 | if (STREAM_WRITEABLE(s) < 4) | |
1690 | return 1; | |
1691 | ||
1692 | stream_put(s, &a->addr, 4); | |
1693 | ||
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | static int unpack_item_ipv4_address(uint16_t mtid, uint8_t len, | |
1698 | struct stream *s, struct sbuf *log, | |
1699 | void *dest, int indent) | |
1700 | { | |
1701 | struct isis_tlvs *tlvs = dest; | |
1702 | ||
1703 | sbuf_push(log, indent, "Unpack IPv4 Interface address...\n"); | |
1704 | if (len < 4) { | |
1705 | sbuf_push( | |
1706 | log, indent, | |
1707 | "Not enough data left.(Expected 4 bytes of IPv4 address, got %" PRIu8 | |
1708 | ")\n", | |
1709 | len); | |
1710 | return 1; | |
1711 | } | |
1712 | ||
841791b6 | 1713 | struct isis_ipv4_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1714 | stream_get(&rv->addr, s, 4); |
1715 | ||
1716 | format_item_ipv4_address(mtid, (struct isis_item *)rv, log, indent + 2); | |
1717 | append_item(&tlvs->ipv4_address, (struct isis_item *)rv); | |
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | ||
1722 | /* Functions related to TLV 232 IPv6 Interface addresses */ | |
1723 | static struct isis_item *copy_item_ipv6_address(struct isis_item *i) | |
1724 | { | |
1725 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
841791b6 | 1726 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1727 | |
1728 | rv->addr = a->addr; | |
1729 | return (struct isis_item *)rv; | |
1730 | } | |
1731 | ||
1732 | static void format_item_ipv6_address(uint16_t mtid, struct isis_item *i, | |
1733 | struct sbuf *buf, int indent) | |
1734 | { | |
1735 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
1736 | char addrbuf[INET6_ADDRSTRLEN]; | |
1737 | ||
1738 | inet_ntop(AF_INET6, &a->addr, addrbuf, sizeof(addrbuf)); | |
1739 | sbuf_push(buf, indent, "IPv6 Interface Address: %s\n", addrbuf); | |
1740 | } | |
1741 | ||
1742 | static void free_item_ipv6_address(struct isis_item *i) | |
1743 | { | |
841791b6 | 1744 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1745 | } |
1746 | ||
1747 | static int pack_item_ipv6_address(struct isis_item *i, struct stream *s) | |
1748 | { | |
1749 | struct isis_ipv6_address *a = (struct isis_ipv6_address *)i; | |
1750 | ||
1751 | if (STREAM_WRITEABLE(s) < 16) | |
1752 | return 1; | |
1753 | ||
1754 | stream_put(s, &a->addr, 16); | |
1755 | ||
1756 | return 0; | |
1757 | } | |
1758 | ||
1759 | static int unpack_item_ipv6_address(uint16_t mtid, uint8_t len, | |
1760 | struct stream *s, struct sbuf *log, | |
1761 | void *dest, int indent) | |
1762 | { | |
1763 | struct isis_tlvs *tlvs = dest; | |
1764 | ||
1765 | sbuf_push(log, indent, "Unpack IPv6 Interface address...\n"); | |
1766 | if (len < 16) { | |
1767 | sbuf_push( | |
1768 | log, indent, | |
1769 | "Not enough data left.(Expected 16 bytes of IPv6 address, got %" PRIu8 | |
1770 | ")\n", | |
1771 | len); | |
1772 | return 1; | |
1773 | } | |
1774 | ||
841791b6 | 1775 | struct isis_ipv6_address *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1776 | stream_get(&rv->addr, s, 16); |
1777 | ||
1778 | format_item_ipv6_address(mtid, (struct isis_item *)rv, log, indent + 2); | |
1779 | append_item(&tlvs->ipv6_address, (struct isis_item *)rv); | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | ||
1784 | /* Functions related to TLV 229 MT Router information */ | |
1785 | static struct isis_item *copy_item_mt_router_info(struct isis_item *i) | |
1786 | { | |
1787 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
841791b6 | 1788 | struct isis_mt_router_info *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1789 | |
1790 | rv->overload = info->overload; | |
1791 | rv->attached = info->attached; | |
1792 | rv->mtid = info->mtid; | |
1793 | return (struct isis_item *)rv; | |
1794 | } | |
1795 | ||
1796 | static void format_item_mt_router_info(uint16_t mtid, struct isis_item *i, | |
1797 | struct sbuf *buf, int indent) | |
1798 | { | |
1799 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
1800 | ||
1801 | sbuf_push(buf, indent, "MT Router Info: %s%s%s\n", | |
98c5bc15 CF |
1802 | isis_mtid2str(info->mtid), |
1803 | info->overload ? " Overload" : "", | |
7ef5fefc CF |
1804 | info->attached ? " Attached" : ""); |
1805 | } | |
1806 | ||
1807 | static void free_item_mt_router_info(struct isis_item *i) | |
1808 | { | |
841791b6 | 1809 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
1810 | } |
1811 | ||
1812 | static int pack_item_mt_router_info(struct isis_item *i, struct stream *s) | |
1813 | { | |
1814 | struct isis_mt_router_info *info = (struct isis_mt_router_info *)i; | |
1815 | ||
1816 | if (STREAM_WRITEABLE(s) < 2) | |
1817 | return 1; | |
1818 | ||
1819 | uint16_t entry = info->mtid; | |
1820 | ||
1821 | if (info->overload) | |
1822 | entry |= ISIS_MT_OL_MASK; | |
1823 | if (info->attached) | |
1824 | entry |= ISIS_MT_AT_MASK; | |
1825 | ||
1826 | stream_putw(s, entry); | |
1827 | ||
1828 | return 0; | |
1829 | } | |
1830 | ||
1831 | static int unpack_item_mt_router_info(uint16_t mtid, uint8_t len, | |
1832 | struct stream *s, struct sbuf *log, | |
1833 | void *dest, int indent) | |
1834 | { | |
1835 | struct isis_tlvs *tlvs = dest; | |
1836 | ||
1837 | sbuf_push(log, indent, "Unpack MT Router info...\n"); | |
1838 | if (len < 2) { | |
1839 | sbuf_push( | |
1840 | log, indent, | |
1841 | "Not enough data left.(Expected 2 bytes of MT info, got %" PRIu8 | |
1842 | ")\n", | |
1843 | len); | |
1844 | return 1; | |
1845 | } | |
1846 | ||
841791b6 | 1847 | struct isis_mt_router_info *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1848 | |
1849 | uint16_t entry = stream_getw(s); | |
1850 | rv->overload = entry & ISIS_MT_OL_MASK; | |
1851 | rv->attached = entry & ISIS_MT_AT_MASK; | |
1852 | rv->mtid = entry & ISIS_MT_MASK; | |
1853 | ||
1854 | format_item_mt_router_info(mtid, (struct isis_item *)rv, log, | |
1855 | indent + 2); | |
1856 | append_item(&tlvs->mt_router_info, (struct isis_item *)rv); | |
1857 | return 0; | |
1858 | } | |
1859 | ||
1860 | /* Functions related to TLV 134 TE Router ID */ | |
1861 | ||
1862 | static struct in_addr *copy_tlv_te_router_id(const struct in_addr *id) | |
1863 | { | |
1864 | if (!id) | |
1865 | return NULL; | |
1866 | ||
841791b6 | 1867 | struct in_addr *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1868 | memcpy(rv, id, sizeof(*rv)); |
1869 | return rv; | |
1870 | } | |
1871 | ||
1872 | static void format_tlv_te_router_id(const struct in_addr *id, struct sbuf *buf, | |
1873 | int indent) | |
1874 | { | |
1875 | if (!id) | |
1876 | return; | |
1877 | ||
1878 | char addrbuf[INET_ADDRSTRLEN]; | |
1879 | inet_ntop(AF_INET, id, addrbuf, sizeof(addrbuf)); | |
1880 | sbuf_push(buf, indent, "TE Router ID: %s\n", addrbuf); | |
1881 | } | |
1882 | ||
1883 | static void free_tlv_te_router_id(struct in_addr *id) | |
1884 | { | |
841791b6 | 1885 | XFREE(MTYPE_ISIS_TLV, id); |
7ef5fefc CF |
1886 | } |
1887 | ||
1888 | static int pack_tlv_te_router_id(const struct in_addr *id, struct stream *s) | |
1889 | { | |
1890 | if (!id) | |
1891 | return 0; | |
1892 | ||
1893 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + sizeof(*id))) | |
1894 | return 1; | |
1895 | ||
1896 | stream_putc(s, ISIS_TLV_TE_ROUTER_ID); | |
1897 | stream_putc(s, 4); | |
1898 | stream_put(s, id, 4); | |
1899 | return 0; | |
1900 | } | |
1901 | ||
1902 | static int unpack_tlv_te_router_id(enum isis_tlv_context context, | |
1903 | uint8_t tlv_type, uint8_t tlv_len, | |
1904 | struct stream *s, struct sbuf *log, | |
1905 | void *dest, int indent) | |
1906 | { | |
1907 | struct isis_tlvs *tlvs = dest; | |
1908 | ||
1909 | sbuf_push(log, indent, "Unpacking TE Router ID TLV...\n"); | |
1910 | if (tlv_len != 4) { | |
1911 | sbuf_push(log, indent, "WARNING: Length invalid\n"); | |
1912 | return 1; | |
1913 | } | |
1914 | ||
1915 | if (tlvs->te_router_id) { | |
1916 | sbuf_push(log, indent, | |
1917 | "WARNING: TE Router ID present multiple times.\n"); | |
1918 | stream_forward_getp(s, tlv_len); | |
1919 | return 0; | |
1920 | } | |
1921 | ||
841791b6 | 1922 | tlvs->te_router_id = XCALLOC(MTYPE_ISIS_TLV, 4); |
7ef5fefc CF |
1923 | stream_get(tlvs->te_router_id, s, 4); |
1924 | format_tlv_te_router_id(tlvs->te_router_id, log, indent + 2); | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | ||
1929 | /* Functions related to TLVs 135/235 extended IP reach/MT IP Reach */ | |
1930 | ||
1931 | static struct isis_item *copy_item_extended_ip_reach(struct isis_item *i) | |
1932 | { | |
1933 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
1934 | struct isis_extended_ip_reach *rv = | |
841791b6 | 1935 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
1936 | |
1937 | rv->metric = r->metric; | |
1938 | rv->down = r->down; | |
1939 | rv->prefix = r->prefix; | |
1b3f47d0 | 1940 | rv->subtlvs = copy_subtlvs(r->subtlvs); |
7ef5fefc CF |
1941 | |
1942 | return (struct isis_item *)rv; | |
1943 | } | |
1944 | ||
1945 | static void format_item_extended_ip_reach(uint16_t mtid, struct isis_item *i, | |
1946 | struct sbuf *buf, int indent) | |
1947 | { | |
1948 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
1949 | char prefixbuf[PREFIX2STR_BUFFER]; | |
1950 | ||
1951 | sbuf_push(buf, indent, "%s IP Reachability: %s (Metric: %u)%s", | |
1952 | (mtid == ISIS_MT_IPV4_UNICAST) ? "Extended" : "MT", | |
98c5bc15 CF |
1953 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), r->metric, |
1954 | r->down ? " Down" : ""); | |
7ef5fefc CF |
1955 | if (mtid != ISIS_MT_IPV4_UNICAST) |
1956 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
1957 | sbuf_push(buf, 0, "\n"); | |
9826647e RW |
1958 | |
1959 | if (r->subtlvs) { | |
1960 | sbuf_push(buf, indent, " Subtlvs:\n"); | |
1961 | format_subtlvs(r->subtlvs, buf, indent + 4); | |
1962 | } | |
7ef5fefc CF |
1963 | } |
1964 | ||
1965 | static void free_item_extended_ip_reach(struct isis_item *i) | |
1966 | { | |
1967 | struct isis_extended_ip_reach *item = | |
1968 | (struct isis_extended_ip_reach *)i; | |
bd507085 | 1969 | isis_free_subtlvs(item->subtlvs); |
841791b6 | 1970 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
1971 | } |
1972 | ||
1973 | static int pack_item_extended_ip_reach(struct isis_item *i, struct stream *s) | |
1974 | { | |
1975 | struct isis_extended_ip_reach *r = (struct isis_extended_ip_reach *)i; | |
1976 | uint8_t control; | |
1977 | ||
1978 | if (STREAM_WRITEABLE(s) < 5) | |
1979 | return 1; | |
1980 | stream_putl(s, r->metric); | |
1981 | ||
1982 | control = r->down ? ISIS_EXTENDED_IP_REACH_DOWN : 0; | |
1983 | control |= r->prefix.prefixlen; | |
bd507085 CF |
1984 | control |= r->subtlvs ? ISIS_EXTENDED_IP_REACH_SUBTLV : 0; |
1985 | ||
7ef5fefc CF |
1986 | stream_putc(s, control); |
1987 | ||
1988 | if (STREAM_WRITEABLE(s) < (unsigned)PSIZE(r->prefix.prefixlen)) | |
1989 | return 1; | |
1990 | stream_put(s, &r->prefix.prefix.s_addr, PSIZE(r->prefix.prefixlen)); | |
bd507085 CF |
1991 | |
1992 | if (r->subtlvs) | |
1993 | return pack_subtlvs(r->subtlvs, s); | |
7ef5fefc CF |
1994 | return 0; |
1995 | } | |
1996 | ||
1997 | static int unpack_item_extended_ip_reach(uint16_t mtid, uint8_t len, | |
1998 | struct stream *s, struct sbuf *log, | |
1999 | void *dest, int indent) | |
2000 | { | |
2001 | struct isis_tlvs *tlvs = dest; | |
2002 | struct isis_extended_ip_reach *rv = NULL; | |
2003 | size_t consume; | |
2004 | uint8_t control, subtlv_len; | |
2005 | struct isis_item_list *items; | |
2006 | ||
2007 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
2008 | items = &tlvs->extended_ip_reach; | |
2009 | } else { | |
2010 | items = isis_get_mt_items(&tlvs->mt_ip_reach, mtid); | |
2011 | } | |
2012 | ||
2013 | sbuf_push(log, indent, "Unpacking %s IPv4 reachability...\n", | |
2014 | (mtid == ISIS_MT_IPV4_UNICAST) ? "extended" : "mt"); | |
2015 | ||
2016 | consume = 5; | |
2017 | if (len < consume) { | |
98c5bc15 CF |
2018 | sbuf_push(log, indent, |
2019 | "Not enough data left. (expected 5 or more bytes, got %" PRIu8 ")\n", | |
2020 | len); | |
7ef5fefc CF |
2021 | goto out; |
2022 | } | |
2023 | ||
841791b6 | 2024 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2025 | |
2026 | rv->metric = stream_getl(s); | |
2027 | control = stream_getc(s); | |
2028 | rv->down = (control & ISIS_EXTENDED_IP_REACH_DOWN); | |
2029 | rv->prefix.family = AF_INET; | |
2030 | rv->prefix.prefixlen = control & 0x3f; | |
2031 | if (rv->prefix.prefixlen > 32) { | |
1b3f47d0 | 2032 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv4\n", |
7ef5fefc CF |
2033 | rv->prefix.prefixlen); |
2034 | goto out; | |
2035 | } | |
2036 | ||
2037 | consume += PSIZE(rv->prefix.prefixlen); | |
2038 | if (len < consume) { | |
98c5bc15 CF |
2039 | sbuf_push(log, indent, |
2040 | "Expected %u bytes of prefix, but only %u bytes available.\n", | |
2041 | PSIZE(rv->prefix.prefixlen), len - 5); | |
7ef5fefc CF |
2042 | goto out; |
2043 | } | |
2044 | stream_get(&rv->prefix.prefix.s_addr, s, PSIZE(rv->prefix.prefixlen)); | |
2045 | in_addr_t orig_prefix = rv->prefix.prefix.s_addr; | |
2046 | apply_mask_ipv4(&rv->prefix); | |
2047 | if (orig_prefix != rv->prefix.prefix.s_addr) | |
2048 | sbuf_push(log, indent + 2, | |
2049 | "WARNING: Prefix had hostbits set.\n"); | |
2050 | format_item_extended_ip_reach(mtid, (struct isis_item *)rv, log, | |
2051 | indent + 2); | |
2052 | ||
2053 | if (control & ISIS_EXTENDED_IP_REACH_SUBTLV) { | |
2054 | consume += 1; | |
2055 | if (len < consume) { | |
98c5bc15 CF |
2056 | sbuf_push(log, indent, |
2057 | "Expected 1 byte of subtlv len, but no more data present.\n"); | |
7ef5fefc CF |
2058 | goto out; |
2059 | } | |
2060 | subtlv_len = stream_getc(s); | |
2061 | ||
2062 | if (!subtlv_len) { | |
98c5bc15 CF |
2063 | sbuf_push(log, indent + 2, |
2064 | " WARNING: subtlv bit is set, but there are no subtlvs.\n"); | |
7ef5fefc CF |
2065 | } |
2066 | consume += subtlv_len; | |
2067 | if (len < consume) { | |
98c5bc15 CF |
2068 | sbuf_push(log, indent, |
2069 | "Expected %" PRIu8 | |
2070 | " bytes of subtlvs, but only %u bytes available.\n", | |
2071 | subtlv_len, | |
2072 | len - 6 - PSIZE(rv->prefix.prefixlen)); | |
7ef5fefc CF |
2073 | goto out; |
2074 | } | |
bd507085 CF |
2075 | |
2076 | rv->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IP_REACH); | |
bf555bf0 CF |
2077 | bool unpacked_known_tlvs = false; |
2078 | ||
bd507085 | 2079 | if (unpack_tlvs(ISIS_CONTEXT_SUBTLV_IP_REACH, subtlv_len, s, |
bf555bf0 | 2080 | log, rv->subtlvs, indent + 4, &unpacked_known_tlvs)) { |
bd507085 CF |
2081 | goto out; |
2082 | } | |
bf555bf0 CF |
2083 | if (!unpacked_known_tlvs) { |
2084 | isis_free_subtlvs(rv->subtlvs); | |
2085 | rv->subtlvs = NULL; | |
2086 | } | |
7ef5fefc CF |
2087 | } |
2088 | ||
2089 | append_item(items, (struct isis_item *)rv); | |
2090 | return 0; | |
2091 | out: | |
2092 | if (rv) | |
2093 | free_item_extended_ip_reach((struct isis_item *)rv); | |
2094 | return 1; | |
2095 | } | |
2096 | ||
2097 | /* Functions related to TLV 137 Dynamic Hostname */ | |
2098 | ||
2099 | static char *copy_tlv_dynamic_hostname(const char *hostname) | |
2100 | { | |
2101 | if (!hostname) | |
2102 | return NULL; | |
2103 | ||
841791b6 | 2104 | return XSTRDUP(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
2105 | } |
2106 | ||
2107 | static void format_tlv_dynamic_hostname(const char *hostname, struct sbuf *buf, | |
2108 | int indent) | |
2109 | { | |
2110 | if (!hostname) | |
2111 | return; | |
2112 | ||
2113 | sbuf_push(buf, indent, "Hostname: %s\n", hostname); | |
2114 | } | |
2115 | ||
2116 | static void free_tlv_dynamic_hostname(char *hostname) | |
2117 | { | |
841791b6 | 2118 | XFREE(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
2119 | } |
2120 | ||
2121 | static int pack_tlv_dynamic_hostname(const char *hostname, struct stream *s) | |
2122 | { | |
2123 | if (!hostname) | |
2124 | return 0; | |
2125 | ||
2126 | uint8_t name_len = strlen(hostname); | |
2127 | ||
2128 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + name_len)) | |
2129 | return 1; | |
2130 | ||
2131 | stream_putc(s, ISIS_TLV_DYNAMIC_HOSTNAME); | |
2132 | stream_putc(s, name_len); | |
2133 | stream_put(s, hostname, name_len); | |
2134 | return 0; | |
2135 | } | |
2136 | ||
2137 | static int unpack_tlv_dynamic_hostname(enum isis_tlv_context context, | |
2138 | uint8_t tlv_type, uint8_t tlv_len, | |
2139 | struct stream *s, struct sbuf *log, | |
2140 | void *dest, int indent) | |
2141 | { | |
2142 | struct isis_tlvs *tlvs = dest; | |
2143 | ||
2144 | sbuf_push(log, indent, "Unpacking Dynamic Hostname TLV...\n"); | |
2145 | if (!tlv_len) { | |
2146 | sbuf_push(log, indent, "WARNING: No hostname included\n"); | |
2147 | return 0; | |
2148 | } | |
2149 | ||
2150 | if (tlvs->hostname) { | |
2151 | sbuf_push(log, indent, | |
2152 | "WARNING: Hostname present multiple times.\n"); | |
2153 | stream_forward_getp(s, tlv_len); | |
2154 | return 0; | |
2155 | } | |
2156 | ||
841791b6 | 2157 | tlvs->hostname = XCALLOC(MTYPE_ISIS_TLV, tlv_len + 1); |
7ef5fefc CF |
2158 | stream_get(tlvs->hostname, s, tlv_len); |
2159 | tlvs->hostname[tlv_len] = '\0'; | |
2160 | ||
2161 | bool sane = true; | |
2162 | for (uint8_t i = 0; i < tlv_len; i++) { | |
2163 | if ((unsigned char)tlvs->hostname[i] > 127 | |
fefa5e0f | 2164 | || !isprint((unsigned char)tlvs->hostname[i])) { |
7ef5fefc CF |
2165 | sane = false; |
2166 | tlvs->hostname[i] = '?'; | |
2167 | } | |
2168 | } | |
2169 | if (!sane) { | |
2170 | sbuf_push( | |
2171 | log, indent, | |
2172 | "WARNING: Hostname contained non-printable/non-ascii characters.\n"); | |
2173 | } | |
2174 | ||
2175 | return 0; | |
2176 | } | |
2177 | ||
41a145f1 CF |
2178 | /* Functions related to TLV 150 Spine-Leaf-Extension */ |
2179 | ||
2180 | static struct isis_spine_leaf *copy_tlv_spine_leaf( | |
2181 | const struct isis_spine_leaf *spine_leaf) | |
2182 | { | |
2183 | if (!spine_leaf) | |
2184 | return NULL; | |
2185 | ||
2186 | struct isis_spine_leaf *rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2187 | memcpy(rv, spine_leaf, sizeof(*rv)); | |
2188 | ||
2189 | return rv; | |
2190 | } | |
2191 | ||
2192 | static void format_tlv_spine_leaf(const struct isis_spine_leaf *spine_leaf, | |
2193 | struct sbuf *buf, int indent) | |
2194 | { | |
2195 | if (!spine_leaf) | |
2196 | return; | |
2197 | ||
2198 | sbuf_push(buf, indent, "Spine-Leaf-Extension:\n"); | |
2199 | if (spine_leaf->has_tier) { | |
2200 | if (spine_leaf->tier == ISIS_TIER_UNDEFINED) { | |
2201 | sbuf_push(buf, indent, " Tier: undefined\n"); | |
2202 | } else { | |
2203 | sbuf_push(buf, indent, " Tier: %" PRIu8 "\n", | |
2204 | spine_leaf->tier); | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | sbuf_push(buf, indent, " Flags:%s%s%s\n", | |
2209 | spine_leaf->is_leaf ? " LEAF" : "", | |
2210 | spine_leaf->is_spine ? " SPINE" : "", | |
2211 | spine_leaf->is_backup ? " BACKUP" : ""); | |
2212 | ||
2213 | } | |
2214 | ||
2215 | static void free_tlv_spine_leaf(struct isis_spine_leaf *spine_leaf) | |
2216 | { | |
2217 | XFREE(MTYPE_ISIS_TLV, spine_leaf); | |
2218 | } | |
2219 | ||
2220 | #define ISIS_SPINE_LEAF_FLAG_TIER 0x08 | |
2221 | #define ISIS_SPINE_LEAF_FLAG_BACKUP 0x04 | |
2222 | #define ISIS_SPINE_LEAF_FLAG_SPINE 0x02 | |
2223 | #define ISIS_SPINE_LEAF_FLAG_LEAF 0x01 | |
2224 | ||
2225 | static int pack_tlv_spine_leaf(const struct isis_spine_leaf *spine_leaf, | |
2226 | struct stream *s) | |
2227 | { | |
2228 | if (!spine_leaf) | |
2229 | return 0; | |
2230 | ||
2231 | uint8_t tlv_len = 2; | |
2232 | ||
2233 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + tlv_len)) | |
2234 | return 1; | |
2235 | ||
2236 | stream_putc(s, ISIS_TLV_SPINE_LEAF_EXT); | |
2237 | stream_putc(s, tlv_len); | |
2238 | ||
2239 | uint16_t spine_leaf_flags = 0; | |
2240 | ||
2241 | if (spine_leaf->has_tier) { | |
2242 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_TIER; | |
2243 | spine_leaf_flags |= spine_leaf->tier << 12; | |
2244 | } | |
2245 | ||
2246 | if (spine_leaf->is_leaf) | |
2247 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_LEAF; | |
2248 | ||
2249 | if (spine_leaf->is_spine) | |
2250 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_SPINE; | |
2251 | ||
2252 | if (spine_leaf->is_backup) | |
2253 | spine_leaf_flags |= ISIS_SPINE_LEAF_FLAG_BACKUP; | |
2254 | ||
2255 | stream_putw(s, spine_leaf_flags); | |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | static int unpack_tlv_spine_leaf(enum isis_tlv_context context, | |
2261 | uint8_t tlv_type, uint8_t tlv_len, | |
2262 | struct stream *s, struct sbuf *log, | |
2263 | void *dest, int indent) | |
2264 | { | |
2265 | struct isis_tlvs *tlvs = dest; | |
2266 | ||
2267 | sbuf_push(log, indent, "Unpacking Spine Leaf Extension TLV...\n"); | |
2268 | if (tlv_len < 2) { | |
2269 | sbuf_push(log, indent, "WARNING: Unexepected TLV size\n"); | |
2270 | stream_forward_getp(s, tlv_len); | |
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | if (tlvs->spine_leaf) { | |
2275 | sbuf_push(log, indent, | |
2276 | "WARNING: Spine Leaf Extension TLV present multiple times.\n"); | |
2277 | stream_forward_getp(s, tlv_len); | |
2278 | return 0; | |
2279 | } | |
2280 | ||
2281 | tlvs->spine_leaf = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->spine_leaf)); | |
2282 | ||
2283 | uint16_t spine_leaf_flags = stream_getw(s); | |
2284 | ||
2285 | if (spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_TIER) { | |
2286 | tlvs->spine_leaf->has_tier = true; | |
2287 | tlvs->spine_leaf->tier = spine_leaf_flags >> 12; | |
2288 | } | |
2289 | ||
2290 | tlvs->spine_leaf->is_leaf = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_LEAF; | |
2291 | tlvs->spine_leaf->is_spine = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_SPINE; | |
2292 | tlvs->spine_leaf->is_backup = spine_leaf_flags & ISIS_SPINE_LEAF_FLAG_BACKUP; | |
2293 | ||
2294 | stream_forward_getp(s, tlv_len - 2); | |
2295 | return 0; | |
2296 | } | |
2297 | ||
9fe21208 CF |
2298 | /* Functions related to TLV 240 P2P Three-Way Adjacency */ |
2299 | ||
2300 | const char *isis_threeway_state_name(enum isis_threeway_state state) | |
2301 | { | |
2302 | switch (state) { | |
2303 | case ISIS_THREEWAY_DOWN: | |
2304 | return "Down"; | |
2305 | case ISIS_THREEWAY_INITIALIZING: | |
2306 | return "Initializing"; | |
2307 | case ISIS_THREEWAY_UP: | |
2308 | return "Up"; | |
2309 | default: | |
2310 | return "Invalid!"; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | static struct isis_threeway_adj *copy_tlv_threeway_adj( | |
2315 | const struct isis_threeway_adj *threeway_adj) | |
2316 | { | |
2317 | if (!threeway_adj) | |
2318 | return NULL; | |
2319 | ||
2320 | struct isis_threeway_adj *rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2321 | memcpy(rv, threeway_adj, sizeof(*rv)); | |
2322 | ||
2323 | return rv; | |
2324 | } | |
2325 | ||
2326 | static void format_tlv_threeway_adj(const struct isis_threeway_adj *threeway_adj, | |
2327 | struct sbuf *buf, int indent) | |
2328 | { | |
2329 | if (!threeway_adj) | |
2330 | return; | |
2331 | ||
2332 | sbuf_push(buf, indent, "P2P Three-Way Adjacency:\n"); | |
2333 | sbuf_push(buf, indent, " State: %s (%d)\n", | |
2334 | isis_threeway_state_name(threeway_adj->state), | |
2335 | threeway_adj->state); | |
2336 | sbuf_push(buf, indent, " Extended Local Circuit ID: %" PRIu32 "\n", | |
2337 | threeway_adj->local_circuit_id); | |
2338 | if (!threeway_adj->neighbor_set) | |
2339 | return; | |
2340 | ||
2341 | sbuf_push(buf, indent, " Neighbor System ID: %s\n", | |
2342 | isis_format_id(threeway_adj->neighbor_id, 6)); | |
2343 | sbuf_push(buf, indent, " Neighbor Extended Circuit ID: %" PRIu32 "\n", | |
2344 | threeway_adj->neighbor_circuit_id); | |
2345 | } | |
2346 | ||
2347 | static void free_tlv_threeway_adj(struct isis_threeway_adj *threeway_adj) | |
2348 | { | |
2349 | XFREE(MTYPE_ISIS_TLV, threeway_adj); | |
2350 | } | |
2351 | ||
2352 | static int pack_tlv_threeway_adj(const struct isis_threeway_adj *threeway_adj, | |
2353 | struct stream *s) | |
2354 | { | |
2355 | if (!threeway_adj) | |
2356 | return 0; | |
2357 | ||
2358 | uint8_t tlv_len = (threeway_adj->neighbor_set) ? 15 : 5; | |
2359 | ||
2360 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + tlv_len)) | |
2361 | return 1; | |
2362 | ||
2363 | stream_putc(s, ISIS_TLV_THREE_WAY_ADJ); | |
2364 | stream_putc(s, tlv_len); | |
2365 | stream_putc(s, threeway_adj->state); | |
2366 | stream_putl(s, threeway_adj->local_circuit_id); | |
2367 | ||
2368 | if (threeway_adj->neighbor_set) { | |
2369 | stream_put(s, threeway_adj->neighbor_id, 6); | |
2370 | stream_putl(s, threeway_adj->neighbor_circuit_id); | |
2371 | } | |
2372 | ||
2373 | return 0; | |
2374 | } | |
2375 | ||
2376 | static int unpack_tlv_threeway_adj(enum isis_tlv_context context, | |
2377 | uint8_t tlv_type, uint8_t tlv_len, | |
2378 | struct stream *s, struct sbuf *log, | |
2379 | void *dest, int indent) | |
2380 | { | |
2381 | struct isis_tlvs *tlvs = dest; | |
2382 | ||
2383 | sbuf_push(log, indent, "Unpacking P2P Three-Way Adjacency TLV...\n"); | |
2384 | if (tlv_len != 5 && tlv_len != 15) { | |
2385 | sbuf_push(log, indent, "WARNING: Unexepected TLV size\n"); | |
2386 | stream_forward_getp(s, tlv_len); | |
2387 | return 0; | |
2388 | } | |
2389 | ||
2390 | if (tlvs->threeway_adj) { | |
2391 | sbuf_push(log, indent, | |
2392 | "WARNING: P2P Three-Way Adjacency TLV present multiple times.\n"); | |
2393 | stream_forward_getp(s, tlv_len); | |
2394 | return 0; | |
2395 | } | |
2396 | ||
2397 | tlvs->threeway_adj = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->threeway_adj)); | |
2398 | ||
2399 | tlvs->threeway_adj->state = stream_getc(s); | |
2400 | tlvs->threeway_adj->local_circuit_id = stream_getl(s); | |
2401 | ||
2402 | if (tlv_len == 15) { | |
2403 | tlvs->threeway_adj->neighbor_set = true; | |
2404 | stream_get(tlvs->threeway_adj->neighbor_id, s, 6); | |
2405 | tlvs->threeway_adj->neighbor_circuit_id = stream_getl(s); | |
2406 | } | |
2407 | ||
2408 | return 0; | |
2409 | } | |
2410 | ||
7ef5fefc CF |
2411 | /* Functions related to TLVs 236/237 IPv6/MT-IPv6 reach */ |
2412 | ||
2413 | static struct isis_item *copy_item_ipv6_reach(struct isis_item *i) | |
2414 | { | |
2415 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
841791b6 | 2416 | struct isis_ipv6_reach *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2417 | rv->metric = r->metric; |
2418 | rv->down = r->down; | |
2419 | rv->external = r->external; | |
2420 | rv->prefix = r->prefix; | |
2421 | rv->subtlvs = copy_subtlvs(r->subtlvs); | |
2422 | ||
2423 | return (struct isis_item *)rv; | |
2424 | } | |
2425 | ||
2426 | static void format_item_ipv6_reach(uint16_t mtid, struct isis_item *i, | |
2427 | struct sbuf *buf, int indent) | |
2428 | { | |
2429 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
2430 | char prefixbuf[PREFIX2STR_BUFFER]; | |
2431 | ||
2432 | sbuf_push(buf, indent, "%sIPv6 Reachability: %s (Metric: %u)%s%s", | |
2433 | (mtid == ISIS_MT_IPV4_UNICAST) ? "" : "MT ", | |
2434 | prefix2str(&r->prefix, prefixbuf, sizeof(prefixbuf)), | |
98c5bc15 CF |
2435 | r->metric, |
2436 | r->down ? " Down" : "", | |
7ef5fefc CF |
2437 | r->external ? " External" : ""); |
2438 | if (mtid != ISIS_MT_IPV4_UNICAST) | |
2439 | sbuf_push(buf, 0, " %s", isis_mtid2str(mtid)); | |
2440 | sbuf_push(buf, 0, "\n"); | |
2441 | ||
2442 | if (r->subtlvs) { | |
2443 | sbuf_push(buf, indent, " Subtlvs:\n"); | |
2444 | format_subtlvs(r->subtlvs, buf, indent + 4); | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | static void free_item_ipv6_reach(struct isis_item *i) | |
2449 | { | |
2450 | struct isis_ipv6_reach *item = (struct isis_ipv6_reach *)i; | |
2451 | ||
2452 | isis_free_subtlvs(item->subtlvs); | |
841791b6 | 2453 | XFREE(MTYPE_ISIS_TLV, item); |
7ef5fefc CF |
2454 | } |
2455 | ||
2456 | static int pack_item_ipv6_reach(struct isis_item *i, struct stream *s) | |
2457 | { | |
2458 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach *)i; | |
2459 | uint8_t control; | |
2460 | ||
2461 | if (STREAM_WRITEABLE(s) < 6) | |
2462 | return 1; | |
2463 | stream_putl(s, r->metric); | |
2464 | ||
2465 | control = r->down ? ISIS_IPV6_REACH_DOWN : 0; | |
2466 | control |= r->external ? ISIS_IPV6_REACH_EXTERNAL : 0; | |
2467 | control |= r->subtlvs ? ISIS_IPV6_REACH_SUBTLV : 0; | |
2468 | ||
2469 | stream_putc(s, control); | |
2470 | stream_putc(s, r->prefix.prefixlen); | |
2471 | ||
2472 | if (STREAM_WRITEABLE(s) < (unsigned)PSIZE(r->prefix.prefixlen)) | |
2473 | return 1; | |
2474 | stream_put(s, &r->prefix.prefix.s6_addr, PSIZE(r->prefix.prefixlen)); | |
2475 | ||
2476 | if (r->subtlvs) | |
2477 | return pack_subtlvs(r->subtlvs, s); | |
2478 | ||
2479 | return 0; | |
2480 | } | |
2481 | ||
2482 | static int unpack_item_ipv6_reach(uint16_t mtid, uint8_t len, struct stream *s, | |
2483 | struct sbuf *log, void *dest, int indent) | |
2484 | { | |
2485 | struct isis_tlvs *tlvs = dest; | |
2486 | struct isis_ipv6_reach *rv = NULL; | |
2487 | size_t consume; | |
2488 | uint8_t control, subtlv_len; | |
2489 | struct isis_item_list *items; | |
2490 | ||
2491 | if (mtid == ISIS_MT_IPV4_UNICAST) { | |
2492 | items = &tlvs->ipv6_reach; | |
2493 | } else { | |
2494 | items = isis_get_mt_items(&tlvs->mt_ipv6_reach, mtid); | |
2495 | } | |
2496 | ||
2497 | sbuf_push(log, indent, "Unpacking %sIPv6 reachability...\n", | |
2498 | (mtid == ISIS_MT_IPV4_UNICAST) ? "" : "mt "); | |
2499 | consume = 6; | |
2500 | if (len < consume) { | |
98c5bc15 CF |
2501 | sbuf_push(log, indent, |
2502 | "Not enough data left. (expected 6 or more bytes, got %" | |
2503 | PRIu8 ")\n", | |
2504 | len); | |
7ef5fefc CF |
2505 | goto out; |
2506 | } | |
2507 | ||
841791b6 | 2508 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2509 | |
2510 | rv->metric = stream_getl(s); | |
2511 | control = stream_getc(s); | |
2512 | rv->down = (control & ISIS_IPV6_REACH_DOWN); | |
2513 | rv->external = (control & ISIS_IPV6_REACH_EXTERNAL); | |
2514 | ||
2515 | rv->prefix.family = AF_INET6; | |
2516 | rv->prefix.prefixlen = stream_getc(s); | |
2517 | if (rv->prefix.prefixlen > 128) { | |
1b3f47d0 | 2518 | sbuf_push(log, indent, "Prefixlen %u is implausible for IPv6\n", |
7ef5fefc CF |
2519 | rv->prefix.prefixlen); |
2520 | goto out; | |
2521 | } | |
2522 | ||
2523 | consume += PSIZE(rv->prefix.prefixlen); | |
2524 | if (len < consume) { | |
98c5bc15 CF |
2525 | sbuf_push(log, indent, |
2526 | "Expected %u bytes of prefix, but only %u bytes available.\n", | |
2527 | PSIZE(rv->prefix.prefixlen), len - 6); | |
7ef5fefc CF |
2528 | goto out; |
2529 | } | |
2530 | stream_get(&rv->prefix.prefix.s6_addr, s, PSIZE(rv->prefix.prefixlen)); | |
2531 | struct in6_addr orig_prefix = rv->prefix.prefix; | |
1b3f47d0 | 2532 | |
7ef5fefc CF |
2533 | apply_mask_ipv6(&rv->prefix); |
2534 | if (memcmp(&orig_prefix, &rv->prefix.prefix, sizeof(orig_prefix))) | |
2535 | sbuf_push(log, indent + 2, | |
2536 | "WARNING: Prefix had hostbits set.\n"); | |
2537 | format_item_ipv6_reach(mtid, (struct isis_item *)rv, log, indent + 2); | |
2538 | ||
2539 | if (control & ISIS_IPV6_REACH_SUBTLV) { | |
2540 | consume += 1; | |
2541 | if (len < consume) { | |
98c5bc15 CF |
2542 | sbuf_push(log, indent, |
2543 | "Expected 1 byte of subtlv len, but no more data persent.\n"); | |
7ef5fefc CF |
2544 | goto out; |
2545 | } | |
2546 | subtlv_len = stream_getc(s); | |
2547 | ||
2548 | if (!subtlv_len) { | |
98c5bc15 CF |
2549 | sbuf_push(log, indent + 2, |
2550 | " WARNING: subtlv bit set, but there are no subtlvs.\n"); | |
7ef5fefc CF |
2551 | } |
2552 | consume += subtlv_len; | |
2553 | if (len < consume) { | |
98c5bc15 CF |
2554 | sbuf_push(log, indent, |
2555 | "Expected %" PRIu8 | |
2556 | " bytes of subtlvs, but only %u bytes available.\n", | |
2557 | subtlv_len, | |
2558 | len - 6 - PSIZE(rv->prefix.prefixlen)); | |
7ef5fefc CF |
2559 | goto out; |
2560 | } | |
2561 | ||
bd507085 | 2562 | rv->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH); |
bf555bf0 CF |
2563 | bool unpacked_known_tlvs = false; |
2564 | ||
7ef5fefc | 2565 | if (unpack_tlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH, subtlv_len, s, |
bf555bf0 | 2566 | log, rv->subtlvs, indent + 4, &unpacked_known_tlvs)) { |
7ef5fefc CF |
2567 | goto out; |
2568 | } | |
bf555bf0 CF |
2569 | if (!unpacked_known_tlvs) { |
2570 | isis_free_subtlvs(rv->subtlvs); | |
2571 | rv->subtlvs = NULL; | |
2572 | } | |
7ef5fefc CF |
2573 | } |
2574 | ||
2575 | append_item(items, (struct isis_item *)rv); | |
2576 | return 0; | |
2577 | out: | |
2578 | if (rv) | |
2579 | free_item_ipv6_reach((struct isis_item *)rv); | |
2580 | return 1; | |
2581 | } | |
2582 | ||
1b3f47d0 OD |
2583 | /* Functions related to TLV 242 Router Capability */ |
2584 | static struct isis_router_cap *copy_tlv_router_cap( | |
2585 | const struct isis_router_cap *router_cap) | |
2586 | { | |
2587 | struct isis_router_cap *rv = XMALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2588 | ||
2589 | if (!router_cap) | |
2590 | return NULL; | |
2591 | ||
2592 | memcpy(rv, router_cap, sizeof(*rv)); | |
2593 | ||
2594 | return rv; | |
2595 | } | |
2596 | ||
2597 | static void format_tlv_router_cap(const struct isis_router_cap *router_cap, | |
2598 | struct sbuf *buf, int indent) | |
2599 | { | |
2600 | char addrbuf[INET_ADDRSTRLEN]; | |
2601 | ||
2602 | if (!router_cap) | |
2603 | return; | |
2604 | ||
2605 | /* Router ID and Flags */ | |
2606 | inet_ntop(AF_INET, &router_cap->router_id, addrbuf, sizeof(addrbuf)); | |
2607 | sbuf_push(buf, indent, "Router Capability:"); | |
2608 | sbuf_push(buf, indent, " %s , D:%c, S:%c\n", addrbuf, | |
2609 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_D ? '1' : '0', | |
2610 | router_cap->flags & ISIS_ROUTER_CAP_FLAG_S ? '1' : '0'); | |
2611 | ||
2612 | /* SR Global Block */ | |
2613 | if (router_cap->srgb.range_size != 0) | |
2614 | sbuf_push(buf, indent, | |
2615 | " Segment Routing: I:%s V:%s, SRGB Base: %d Range: %d\n", | |
2616 | IS_SR_IPV4(router_cap->srgb) ? "1" : "0", | |
2617 | IS_SR_IPV6(router_cap->srgb) ? "1" : "0", | |
2618 | router_cap->srgb.lower_bound, | |
2619 | router_cap->srgb.range_size); | |
2620 | ||
2621 | /* SR Algorithms */ | |
2622 | if (router_cap->algo[0] != SR_ALGORITHM_UNSET) { | |
2623 | sbuf_push(buf, indent, " Algorithm: %s", | |
2624 | router_cap->algo[0] == 0 ? "0: SPF" | |
2625 | : "0: Strict SPF"); | |
2626 | for (int i = 0; i < SR_ALGORITHM_COUNT; i++) | |
2627 | if (router_cap->algo[i] != SR_ALGORITHM_UNSET) | |
2628 | sbuf_push(buf, indent, " %s", | |
2629 | router_cap->algo[1] == 0 | |
2630 | ? "0: SPF" | |
2631 | : "0: Strict SPF"); | |
2632 | sbuf_push(buf, indent, "\n"); | |
2633 | } | |
2634 | ||
2635 | /* SR Node MSSD */ | |
2636 | if (router_cap->msd != 0) | |
2637 | sbuf_push(buf, indent, " Node MSD: %d\n", router_cap->msd); | |
2638 | } | |
2639 | ||
2640 | static void free_tlv_router_cap(struct isis_router_cap *router_cap) | |
2641 | { | |
2642 | XFREE(MTYPE_ISIS_TLV, router_cap); | |
2643 | } | |
2644 | ||
2645 | static int pack_tlv_router_cap(const struct isis_router_cap *router_cap, | |
2646 | struct stream *s) | |
2647 | { | |
2648 | size_t tlv_len = ISIS_ROUTER_CAP_SIZE; | |
2649 | size_t len_pos; | |
2650 | uint8_t nb_algo; | |
2651 | ||
2652 | if (!router_cap) | |
2653 | return 0; | |
2654 | ||
2655 | /* Compute Maximum TLV size */ | |
2656 | tlv_len += ISIS_SUBTLV_SID_LABEL_RANGE_SIZE | |
2657 | + ISIS_SUBTLV_HDR_SIZE | |
2658 | + ISIS_SUBTLV_ALGORITHM_SIZE | |
2659 | + ISIS_SUBTLV_NODE_MSD_SIZE; | |
2660 | ||
2661 | if (STREAM_WRITEABLE(s) < (unsigned int)(2 + tlv_len)) | |
2662 | return 1; | |
2663 | ||
2664 | /* Add Router Capability TLV 242 with Router ID and Flags */ | |
2665 | stream_putc(s, ISIS_TLV_ROUTER_CAPABILITY); | |
2666 | /* Real length will be adjusted later */ | |
2667 | len_pos = stream_get_endp(s); | |
2668 | stream_putc(s, tlv_len); | |
2669 | stream_put_ipv4(s, router_cap->router_id.s_addr); | |
2670 | stream_putc(s, router_cap->flags); | |
2671 | ||
2672 | /* Add SRGB if set */ | |
2673 | if ((router_cap->srgb.range_size != 0) | |
2674 | && (router_cap->srgb.lower_bound != 0)) { | |
2675 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_RANGE); | |
2676 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_RANGE_SIZE); | |
2677 | stream_putc(s, router_cap->srgb.flags); | |
2678 | stream_put3(s, router_cap->srgb.range_size); | |
2679 | stream_putc(s, ISIS_SUBTLV_SID_LABEL); | |
2680 | stream_putc(s, ISIS_SUBTLV_SID_LABEL_SIZE); | |
2681 | stream_put3(s, router_cap->srgb.lower_bound); | |
2682 | ||
2683 | /* Then SR Algorithm if set */ | |
2684 | for (nb_algo = 0; nb_algo < SR_ALGORITHM_COUNT; nb_algo++) | |
2685 | if (router_cap->algo[nb_algo] == SR_ALGORITHM_UNSET) | |
2686 | break; | |
2687 | if (nb_algo > 0) { | |
2688 | stream_putc(s, ISIS_SUBTLV_ALGORITHM); | |
2689 | stream_putc(s, nb_algo); | |
2690 | for (int i = 0; i < nb_algo; i++) | |
2691 | stream_putc(s, router_cap->algo[i]); | |
2692 | } | |
2693 | /* And finish with MSD if set */ | |
2694 | if (router_cap->msd != 0) { | |
2695 | stream_putc(s, ISIS_SUBTLV_NODE_MSD); | |
2696 | stream_putc(s, ISIS_SUBTLV_NODE_MSD_SIZE); | |
2697 | stream_putc(s, MSD_TYPE_BASE_MPLS_IMPOSITION); | |
2698 | stream_putc(s, router_cap->msd); | |
2699 | } | |
2700 | } | |
2701 | ||
2702 | /* Adjust TLV length which depends on subTLVs presence */ | |
2703 | tlv_len = stream_get_endp(s) - len_pos - 1; | |
2704 | stream_putc_at(s, len_pos, tlv_len); | |
2705 | ||
2706 | return 0; | |
2707 | } | |
2708 | ||
2709 | static int unpack_tlv_router_cap(enum isis_tlv_context context, | |
2710 | uint8_t tlv_type, uint8_t tlv_len, | |
2711 | struct stream *s, struct sbuf *log, | |
2712 | void *dest, int indent) | |
2713 | { | |
2714 | struct isis_tlvs *tlvs = dest; | |
2715 | uint8_t type; | |
2716 | uint8_t length; | |
2717 | uint8_t subtlv_len; | |
2718 | uint8_t sid_len; | |
2719 | ||
2720 | sbuf_push(log, indent, "Unpacking Router Capability TLV...\n"); | |
2721 | if (tlv_len < ISIS_ROUTER_CAP_SIZE) { | |
2722 | sbuf_push(log, indent, "WARNING: Unexpected TLV size\n"); | |
2723 | stream_forward_getp(s, tlv_len); | |
2724 | return 0; | |
2725 | } | |
2726 | ||
2727 | if (tlvs->router_cap) { | |
2728 | sbuf_push(log, indent, | |
2729 | "WARNING: Router Capability TLV present multiple times.\n"); | |
2730 | stream_forward_getp(s, tlv_len); | |
2731 | return 0; | |
2732 | } | |
2733 | ||
2734 | /* Allocate router cap structure and initialize SR Algorithms */ | |
2735 | tlvs->router_cap = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->router_cap)); | |
2736 | for (int i = 0; i < SR_ALGORITHM_COUNT; i++) | |
2737 | tlvs->router_cap->algo[i] = SR_ALGORITHM_UNSET; | |
2738 | ||
2739 | /* Get Router ID and Flags */ | |
2740 | tlvs->router_cap->router_id.s_addr = stream_get_ipv4(s); | |
2741 | tlvs->router_cap->flags = stream_getc(s); | |
2742 | ||
2743 | /* Parse remaining part of the TLV if present */ | |
2744 | subtlv_len = tlv_len - ISIS_ROUTER_CAP_SIZE; | |
2745 | while (subtlv_len > 2) { | |
2746 | struct isis_router_cap *rc = tlvs->router_cap; | |
2747 | uint8_t msd_type; | |
2748 | ||
2749 | type = stream_getc(s); | |
2750 | length = stream_getc(s); | |
2751 | switch (type) { | |
2752 | case ISIS_SUBTLV_SID_LABEL_RANGE: | |
2753 | rc->srgb.flags = stream_getc(s); | |
2754 | rc->srgb.range_size = stream_get3(s); | |
2755 | /* Skip Type and get Length of SID Label */ | |
2756 | stream_getc(s); | |
2757 | sid_len = stream_getc(s); | |
2758 | if (sid_len == ISIS_SUBTLV_SID_LABEL_SIZE) | |
2759 | rc->srgb.lower_bound = stream_get3(s); | |
2760 | else | |
2761 | rc->srgb.lower_bound = stream_getl(s); | |
2762 | ||
2763 | /* SRGB sanity checks. */ | |
2764 | if (rc->srgb.range_size == 0 | |
2765 | || (rc->srgb.lower_bound <= MPLS_LABEL_RESERVED_MAX) | |
2766 | || ((rc->srgb.lower_bound + rc->srgb.range_size - 1) | |
2767 | > MPLS_LABEL_UNRESERVED_MAX)) { | |
2768 | sbuf_push(log, indent, "Invalid label range. Reset SRGB\n"); | |
2769 | rc->srgb.lower_bound = 0; | |
2770 | rc->srgb.range_size = 0; | |
2771 | } | |
2772 | break; | |
2773 | case ISIS_SUBTLV_ALGORITHM: | |
2774 | /* Only 2 algorithms are supported: SPF & Strict SPF */ | |
2775 | stream_get(&rc->algo, s, | |
2776 | length > SR_ALGORITHM_COUNT | |
2777 | ? SR_ALGORITHM_COUNT | |
2778 | : length); | |
2779 | if (length > SR_ALGORITHM_COUNT) | |
2780 | stream_forward_getp( | |
2781 | s, length - SR_ALGORITHM_COUNT); | |
2782 | break; | |
2783 | case ISIS_SUBTLV_NODE_MSD: | |
2784 | msd_type = stream_getc(s); | |
2785 | rc->msd = stream_getc(s); | |
2786 | /* Only BMI-MSD type has been defined in RFC 8491 */ | |
2787 | if (msd_type != MSD_TYPE_BASE_MPLS_IMPOSITION) | |
2788 | rc->msd = 0; | |
2789 | break; | |
2790 | default: | |
2791 | stream_forward_getp(s, length); | |
2792 | break; | |
2793 | } | |
2794 | subtlv_len = subtlv_len - length - 2; | |
2795 | } | |
2796 | return 0; | |
2797 | } | |
2798 | ||
7ef5fefc CF |
2799 | /* Functions related to TLV 10 Authentication */ |
2800 | static struct isis_item *copy_item_auth(struct isis_item *i) | |
2801 | { | |
2802 | struct isis_auth *auth = (struct isis_auth *)i; | |
841791b6 | 2803 | struct isis_auth *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2804 | |
2805 | rv->type = auth->type; | |
2806 | rv->length = auth->length; | |
2807 | memcpy(rv->value, auth->value, sizeof(rv->value)); | |
2808 | return (struct isis_item *)rv; | |
2809 | } | |
2810 | ||
2811 | static void format_item_auth(uint16_t mtid, struct isis_item *i, | |
2812 | struct sbuf *buf, int indent) | |
2813 | { | |
2814 | struct isis_auth *auth = (struct isis_auth *)i; | |
2815 | char obuf[768]; | |
2816 | ||
2817 | sbuf_push(buf, indent, "Authentication:\n"); | |
2818 | switch (auth->type) { | |
2819 | case ISIS_PASSWD_TYPE_CLEARTXT: | |
2820 | zlog_sanitize(obuf, sizeof(obuf), auth->value, auth->length); | |
2821 | sbuf_push(buf, indent, " Password: %s\n", obuf); | |
2822 | break; | |
2823 | case ISIS_PASSWD_TYPE_HMAC_MD5: | |
f7813c7c A |
2824 | for (unsigned int j = 0; j < 16; j++) { |
2825 | snprintf(obuf + 2 * j, sizeof(obuf) - 2 * j, | |
2826 | "%02" PRIx8, auth->value[j]); | |
7ef5fefc CF |
2827 | } |
2828 | sbuf_push(buf, indent, " HMAC-MD5: %s\n", obuf); | |
2829 | break; | |
2830 | default: | |
2831 | sbuf_push(buf, indent, " Unknown (%" PRIu8 ")\n", auth->type); | |
2832 | break; | |
5b94ec50 | 2833 | } |
7ef5fefc CF |
2834 | } |
2835 | ||
2836 | static void free_item_auth(struct isis_item *i) | |
2837 | { | |
841791b6 | 2838 | XFREE(MTYPE_ISIS_TLV, i); |
7ef5fefc CF |
2839 | } |
2840 | ||
2841 | static int pack_item_auth(struct isis_item *i, struct stream *s) | |
2842 | { | |
2843 | struct isis_auth *auth = (struct isis_auth *)i; | |
2844 | ||
2845 | if (STREAM_WRITEABLE(s) < 1) | |
2846 | return 1; | |
2847 | stream_putc(s, auth->type); | |
2848 | ||
2849 | switch (auth->type) { | |
2850 | case ISIS_PASSWD_TYPE_CLEARTXT: | |
2851 | if (STREAM_WRITEABLE(s) < auth->length) | |
2852 | return 1; | |
2853 | stream_put(s, auth->passwd, auth->length); | |
2854 | break; | |
2855 | case ISIS_PASSWD_TYPE_HMAC_MD5: | |
2856 | if (STREAM_WRITEABLE(s) < 16) | |
2857 | return 1; | |
2858 | auth->offset = stream_get_endp(s); | |
2859 | stream_put(s, NULL, 16); | |
2860 | break; | |
2861 | default: | |
2862 | return 1; | |
2863 | } | |
2864 | ||
2865 | return 0; | |
2866 | } | |
2867 | ||
2868 | static int unpack_item_auth(uint16_t mtid, uint8_t len, struct stream *s, | |
2869 | struct sbuf *log, void *dest, int indent) | |
2870 | { | |
2871 | struct isis_tlvs *tlvs = dest; | |
2872 | ||
2873 | sbuf_push(log, indent, "Unpack Auth TLV...\n"); | |
2874 | if (len < 1) { | |
2875 | sbuf_push( | |
2876 | log, indent, | |
2877 | "Not enough data left.(Expected 1 bytes of auth type, got %" PRIu8 | |
2878 | ")\n", | |
2879 | len); | |
2880 | return 1; | |
2881 | } | |
2882 | ||
841791b6 | 2883 | struct isis_auth *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
2884 | |
2885 | rv->type = stream_getc(s); | |
2886 | rv->length = len - 1; | |
2887 | ||
2888 | if (rv->type == ISIS_PASSWD_TYPE_HMAC_MD5 && rv->length != 16) { | |
2889 | sbuf_push( | |
2890 | log, indent, | |
2891 | "Unexpected auth length for HMAC-MD5 (expected 16, got %" PRIu8 | |
2892 | ")\n", | |
2893 | rv->length); | |
841791b6 | 2894 | XFREE(MTYPE_ISIS_TLV, rv); |
7ef5fefc CF |
2895 | return 1; |
2896 | } | |
2897 | ||
2898 | rv->offset = stream_get_getp(s); | |
2899 | stream_get(rv->value, s, rv->length); | |
2900 | format_item_auth(mtid, (struct isis_item *)rv, log, indent + 2); | |
2901 | append_item(&tlvs->isis_auth, (struct isis_item *)rv); | |
2902 | return 0; | |
2903 | } | |
2904 | ||
5f77d901 CF |
2905 | /* Functions related to TLV 13 Purge Originator */ |
2906 | ||
2907 | static struct isis_purge_originator *copy_tlv_purge_originator( | |
2908 | struct isis_purge_originator *poi) | |
2909 | { | |
2910 | if (!poi) | |
2911 | return NULL; | |
2912 | ||
2913 | struct isis_purge_originator *rv; | |
2914 | ||
2915 | rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); | |
2916 | rv->sender_set = poi->sender_set; | |
2917 | memcpy(rv->generator, poi->generator, sizeof(rv->generator)); | |
2918 | if (poi->sender_set) | |
2919 | memcpy(rv->sender, poi->sender, sizeof(rv->sender)); | |
2920 | return rv; | |
2921 | } | |
2922 | ||
2923 | static void format_tlv_purge_originator(struct isis_purge_originator *poi, | |
2924 | struct sbuf *buf, int indent) | |
2925 | { | |
2926 | if (!poi) | |
2927 | return; | |
2928 | ||
2929 | sbuf_push(buf, indent, "Purge Originator Identification:\n"); | |
2930 | sbuf_push(buf, indent, " Generator: %s\n", | |
2931 | isis_format_id(poi->generator, sizeof(poi->generator))); | |
2932 | if (poi->sender_set) { | |
2933 | sbuf_push(buf, indent, " Received-From: %s\n", | |
2934 | isis_format_id(poi->sender, sizeof(poi->sender))); | |
2935 | } | |
2936 | } | |
2937 | ||
2938 | static void free_tlv_purge_originator(struct isis_purge_originator *poi) | |
2939 | { | |
2940 | XFREE(MTYPE_ISIS_TLV, poi); | |
2941 | } | |
2942 | ||
2943 | static int pack_tlv_purge_originator(struct isis_purge_originator *poi, | |
2944 | struct stream *s) | |
2945 | { | |
2946 | if (!poi) | |
2947 | return 0; | |
2948 | ||
2949 | uint8_t data_len = 1 + sizeof(poi->generator); | |
2950 | ||
2951 | if (poi->sender_set) | |
2952 | data_len += sizeof(poi->sender); | |
2953 | ||
2954 | if (STREAM_WRITEABLE(s) < (unsigned)(2 + data_len)) | |
2955 | return 1; | |
2956 | ||
2957 | stream_putc(s, ISIS_TLV_PURGE_ORIGINATOR); | |
2958 | stream_putc(s, data_len); | |
2959 | stream_putc(s, poi->sender_set ? 2 : 1); | |
2960 | stream_put(s, poi->generator, sizeof(poi->generator)); | |
2961 | if (poi->sender_set) | |
2962 | stream_put(s, poi->sender, sizeof(poi->sender)); | |
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | static int unpack_tlv_purge_originator(enum isis_tlv_context context, | |
2967 | uint8_t tlv_type, uint8_t tlv_len, | |
2968 | struct stream *s, struct sbuf *log, | |
2969 | void *dest, int indent) | |
2970 | { | |
2971 | struct isis_tlvs *tlvs = dest; | |
3e300703 | 2972 | struct isis_purge_originator poi = {}; |
5f77d901 CF |
2973 | |
2974 | sbuf_push(log, indent, "Unpacking Purge Originator Identification TLV...\n"); | |
2975 | if (tlv_len < 7) { | |
2976 | sbuf_push(log, indent, "Not enough data left. (Expected at least 7 bytes, got %" | |
2977 | PRIu8 ")\n", tlv_len); | |
2978 | return 1; | |
2979 | } | |
2980 | ||
2981 | uint8_t number_of_ids = stream_getc(s); | |
2982 | ||
2983 | if (number_of_ids == 1) { | |
2984 | poi.sender_set = false; | |
2985 | } else if (number_of_ids == 2) { | |
2986 | poi.sender_set = true; | |
2987 | } else { | |
2988 | sbuf_push(log, indent, "Got invalid value for number of system IDs: %" | |
2989 | PRIu8 ")\n", number_of_ids); | |
2990 | return 1; | |
2991 | } | |
2992 | ||
2993 | if (tlv_len != 1 + 6 * number_of_ids) { | |
2994 | sbuf_push(log, indent, "Incorrect tlv len for number of IDs.\n"); | |
2995 | return 1; | |
2996 | } | |
2997 | ||
2998 | stream_get(poi.generator, s, sizeof(poi.generator)); | |
2999 | if (poi.sender_set) | |
3000 | stream_get(poi.sender, s, sizeof(poi.sender)); | |
3001 | ||
3002 | if (tlvs->purge_originator) { | |
3003 | sbuf_push(log, indent, | |
3004 | "WARNING: Purge originator present multiple times, ignoring.\n"); | |
3005 | return 0; | |
3006 | } | |
3007 | ||
3008 | tlvs->purge_originator = copy_tlv_purge_originator(&poi); | |
3009 | return 0; | |
3010 | } | |
3011 | ||
3012 | ||
7ef5fefc CF |
3013 | /* Functions relating to item TLVs */ |
3014 | ||
3015 | static void init_item_list(struct isis_item_list *items) | |
3016 | { | |
3017 | items->head = NULL; | |
3018 | items->tail = &items->head; | |
3019 | items->count = 0; | |
3020 | } | |
3021 | ||
3022 | static struct isis_item *copy_item(enum isis_tlv_context context, | |
3023 | enum isis_tlv_type type, | |
3024 | struct isis_item *item) | |
3025 | { | |
3026 | const struct tlv_ops *ops = tlv_table[context][type]; | |
3027 | ||
3028 | if (ops && ops->copy_item) | |
3029 | return ops->copy_item(item); | |
3030 | ||
3031 | assert(!"Unknown item tlv type!"); | |
3032 | return NULL; | |
3033 | } | |
3034 | ||
3035 | static void copy_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
3036 | struct isis_item_list *src, struct isis_item_list *dest) | |
3037 | { | |
3038 | struct isis_item *item; | |
3039 | ||
3040 | init_item_list(dest); | |
3041 | ||
3042 | for (item = src->head; item; item = item->next) { | |
3043 | append_item(dest, copy_item(context, type, item)); | |
3044 | } | |
3045 | } | |
3046 | ||
3047 | static void format_item(uint16_t mtid, enum isis_tlv_context context, | |
3048 | enum isis_tlv_type type, struct isis_item *i, | |
3049 | struct sbuf *buf, int indent) | |
3050 | { | |
3051 | const struct tlv_ops *ops = tlv_table[context][type]; | |
3052 | ||
3053 | if (ops && ops->format_item) { | |
3054 | ops->format_item(mtid, i, buf, indent); | |
3055 | return; | |
3056 | } | |
3057 | ||
3058 | assert(!"Unknown item tlv type!"); | |
3059 | } | |
3060 | ||
3061 | static void format_items_(uint16_t mtid, enum isis_tlv_context context, | |
3062 | enum isis_tlv_type type, struct isis_item_list *items, | |
3063 | struct sbuf *buf, int indent) | |
3064 | { | |
3065 | struct isis_item *i; | |
3066 | ||
3067 | for (i = items->head; i; i = i->next) | |
3068 | format_item(mtid, context, type, i, buf, indent); | |
3069 | } | |
7ef5fefc CF |
3070 | |
3071 | static void free_item(enum isis_tlv_context tlv_context, | |
3072 | enum isis_tlv_type tlv_type, struct isis_item *item) | |
3073 | { | |
3074 | const struct tlv_ops *ops = tlv_table[tlv_context][tlv_type]; | |
3075 | ||
3076 | if (ops && ops->free_item) { | |
3077 | ops->free_item(item); | |
3078 | return; | |
3079 | } | |
3080 | ||
3081 | assert(!"Unknown item tlv type!"); | |
3082 | } | |
3083 | ||
3084 | static void free_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
3085 | struct isis_item_list *items) | |
3086 | { | |
3087 | struct isis_item *item, *next_item; | |
3088 | ||
3089 | for (item = items->head; item; item = next_item) { | |
3090 | next_item = item->next; | |
3091 | free_item(context, type, item); | |
3092 | } | |
3093 | } | |
3094 | ||
3095 | static int pack_item(enum isis_tlv_context context, enum isis_tlv_type type, | |
3096 | struct isis_item *i, struct stream *s, | |
3097 | struct isis_tlvs **fragment_tlvs, | |
2b64873d | 3098 | const struct pack_order_entry *pe, uint16_t mtid) |
7ef5fefc CF |
3099 | { |
3100 | const struct tlv_ops *ops = tlv_table[context][type]; | |
3101 | ||
3102 | if (ops && ops->pack_item) { | |
3103 | return ops->pack_item(i, s); | |
3104 | } | |
3105 | ||
3106 | assert(!"Unknown item tlv type!"); | |
3107 | return 1; | |
3108 | } | |
3109 | ||
2b64873d DL |
3110 | static void add_item_to_fragment(struct isis_item *i, |
3111 | const struct pack_order_entry *pe, | |
7ef5fefc CF |
3112 | struct isis_tlvs *fragment_tlvs, uint16_t mtid) |
3113 | { | |
3114 | struct isis_item_list *l; | |
3115 | ||
3116 | if (pe->how_to_pack == ISIS_ITEMS) { | |
98c5bc15 | 3117 | l = (struct isis_item_list *)(((char *)fragment_tlvs) + pe->what_to_pack); |
7ef5fefc CF |
3118 | } else { |
3119 | struct isis_mt_item_list *m; | |
98c5bc15 | 3120 | m = (struct isis_mt_item_list *)(((char *)fragment_tlvs) + pe->what_to_pack); |
7ef5fefc CF |
3121 | l = isis_get_mt_items(m, mtid); |
3122 | } | |
3123 | ||
3124 | append_item(l, copy_item(pe->context, pe->type, i)); | |
3125 | } | |
3126 | ||
3127 | static int pack_items_(uint16_t mtid, enum isis_tlv_context context, | |
3128 | enum isis_tlv_type type, struct isis_item_list *items, | |
3129 | struct stream *s, struct isis_tlvs **fragment_tlvs, | |
2b64873d | 3130 | const struct pack_order_entry *pe, |
7ef5fefc CF |
3131 | struct isis_tlvs *(*new_fragment)(struct list *l), |
3132 | struct list *new_fragment_arg) | |
3133 | { | |
3134 | size_t len_pos, last_len, len; | |
3135 | struct isis_item *item = NULL; | |
3136 | int rv; | |
3137 | ||
3138 | if (!items->head) | |
3139 | return 0; | |
3140 | ||
3141 | top: | |
3142 | if (STREAM_WRITEABLE(s) < 2) | |
3143 | goto too_long; | |
3144 | ||
3145 | stream_putc(s, type); | |
3146 | len_pos = stream_get_endp(s); | |
3147 | stream_putc(s, 0); /* Put 0 as length for now */ | |
3148 | ||
3149 | if (context == ISIS_CONTEXT_LSP && IS_COMPAT_MT_TLV(type) | |
3150 | && mtid != ISIS_MT_IPV4_UNICAST) { | |
3151 | if (STREAM_WRITEABLE(s) < 2) | |
3152 | goto too_long; | |
3153 | stream_putw(s, mtid); | |
3154 | } | |
3155 | ||
3156 | if (context == ISIS_CONTEXT_LSP && type == ISIS_TLV_OLDSTYLE_REACH) { | |
3157 | if (STREAM_WRITEABLE(s) < 1) | |
3158 | goto too_long; | |
3159 | stream_putc(s, 0); /* Virtual flag is set to 0 */ | |
3160 | } | |
3161 | ||
3162 | last_len = len = 0; | |
3163 | for (item = item ? item : items->head; item; item = item->next) { | |
3164 | rv = pack_item(context, type, item, s, fragment_tlvs, pe, mtid); | |
3165 | if (rv) | |
3166 | goto too_long; | |
3167 | ||
3168 | len = stream_get_endp(s) - len_pos - 1; | |
3169 | ||
3170 | /* Multiple auths don't go into one TLV, so always break */ | |
3171 | if (context == ISIS_CONTEXT_LSP && type == ISIS_TLV_AUTH) { | |
3172 | item = item->next; | |
3173 | break; | |
3174 | } | |
3175 | ||
bd507085 CF |
3176 | /* Multiple prefix-sids don't go into one TLV, so always break */ |
3177 | if (type == ISIS_SUBTLV_PREFIX_SID | |
3178 | && (context == ISIS_CONTEXT_SUBTLV_IP_REACH | |
3179 | || context == ISIS_CONTEXT_SUBTLV_IPV6_REACH)) { | |
3180 | item = item->next; | |
3181 | break; | |
3182 | } | |
3183 | ||
7ef5fefc CF |
3184 | if (len > 255) { |
3185 | if (!last_len) /* strange, not a single item fit */ | |
3186 | return 1; | |
3187 | /* drop last tlv, otherwise, its too long */ | |
3188 | stream_set_endp(s, len_pos + 1 + last_len); | |
3189 | len = last_len; | |
3190 | break; | |
3191 | } | |
3192 | ||
3193 | if (fragment_tlvs) | |
3194 | add_item_to_fragment(item, pe, *fragment_tlvs, mtid); | |
3195 | ||
3196 | last_len = len; | |
3197 | } | |
3198 | ||
3199 | stream_putc_at(s, len_pos, len); | |
3200 | if (item) | |
3201 | goto top; | |
3202 | ||
3203 | return 0; | |
3204 | too_long: | |
3205 | if (!fragment_tlvs) | |
3206 | return 1; | |
3207 | stream_reset(s); | |
3208 | *fragment_tlvs = new_fragment(new_fragment_arg); | |
3209 | goto top; | |
3210 | } | |
3211 | #define pack_items(...) pack_items_(ISIS_MT_IPV4_UNICAST, __VA_ARGS__) | |
3212 | ||
3213 | static void append_item(struct isis_item_list *dest, struct isis_item *item) | |
3214 | { | |
3215 | *dest->tail = item; | |
3216 | dest->tail = &(*dest->tail)->next; | |
3217 | dest->count++; | |
3218 | } | |
3219 | ||
1b3f47d0 OD |
3220 | static void delete_item(struct isis_item_list *dest, struct isis_item *del) |
3221 | { | |
3222 | struct isis_item *item, *prev = NULL, *next; | |
3223 | ||
3224 | /* Sanity Check */ | |
3225 | if ((dest == NULL) || (del == NULL)) | |
3226 | return; | |
3227 | ||
3228 | /* | |
3229 | * TODO: delete is tricky because "dest" is a singly linked list. | |
3230 | * We need to switch a doubly linked list. | |
3231 | */ | |
3232 | for (item = dest->head; item; item = next) { | |
3233 | if (item->next == del) { | |
3234 | prev = item; | |
3235 | break; | |
3236 | } | |
3237 | next = item->next; | |
3238 | } | |
3239 | if (prev) | |
3240 | prev->next = del->next; | |
3241 | if (dest->head == del) | |
3242 | dest->head = del->next; | |
3243 | if ((struct isis_item *)dest->tail == del) { | |
3244 | *dest->tail = prev; | |
3245 | if (prev) | |
3246 | dest->tail = &(*dest->tail)->next; | |
3247 | else | |
3248 | dest->tail = &dest->head; | |
3249 | } | |
3250 | dest->count--; | |
3251 | } | |
3252 | ||
d43d2df5 CF |
3253 | static struct isis_item *last_item(struct isis_item_list *list) |
3254 | { | |
3255 | return container_of(list->tail, struct isis_item, next); | |
3256 | } | |
3257 | ||
7ef5fefc CF |
3258 | static int unpack_item(uint16_t mtid, enum isis_tlv_context context, |
3259 | uint8_t tlv_type, uint8_t len, struct stream *s, | |
3260 | struct sbuf *log, void *dest, int indent) | |
3261 | { | |
3262 | const struct tlv_ops *ops = tlv_table[context][tlv_type]; | |
3263 | ||
3264 | if (ops && ops->unpack_item) | |
3265 | return ops->unpack_item(mtid, len, s, log, dest, indent); | |
3266 | ||
3267 | assert(!"Unknown item tlv type!"); | |
3268 | sbuf_push(log, indent, "Unknown item tlv type!\n"); | |
3269 | return 1; | |
3270 | } | |
3271 | ||
3272 | static int unpack_tlv_with_items(enum isis_tlv_context context, | |
3273 | uint8_t tlv_type, uint8_t tlv_len, | |
3274 | struct stream *s, struct sbuf *log, void *dest, | |
3275 | int indent) | |
3276 | { | |
3277 | size_t tlv_start; | |
3278 | size_t tlv_pos; | |
3279 | int rv; | |
3280 | uint16_t mtid; | |
3281 | ||
3282 | tlv_start = stream_get_getp(s); | |
3283 | tlv_pos = 0; | |
3284 | ||
3285 | if (context == ISIS_CONTEXT_LSP && IS_COMPAT_MT_TLV(tlv_type)) { | |
3286 | if (tlv_len < 2) { | |
3287 | sbuf_push(log, indent, | |
3288 | "TLV is too short to contain MTID\n"); | |
3289 | return 1; | |
3290 | } | |
3291 | mtid = stream_getw(s) & ISIS_MT_MASK; | |
3292 | tlv_pos += 2; | |
3293 | sbuf_push(log, indent, "Unpacking as MT %s item TLV...\n", | |
3294 | isis_mtid2str(mtid)); | |
3295 | } else { | |
3296 | sbuf_push(log, indent, "Unpacking as item TLV...\n"); | |
3297 | mtid = ISIS_MT_IPV4_UNICAST; | |
3298 | } | |
3299 | ||
3300 | if (context == ISIS_CONTEXT_LSP | |
3301 | && tlv_type == ISIS_TLV_OLDSTYLE_REACH) { | |
3302 | if (tlv_len - tlv_pos < 1) { | |
3303 | sbuf_push(log, indent, | |
3304 | "TLV is too short for old style reach\n"); | |
3305 | return 1; | |
3306 | } | |
3307 | stream_forward_getp(s, 1); | |
3308 | tlv_pos += 1; | |
3309 | } | |
3310 | ||
3311 | if (context == ISIS_CONTEXT_LSP | |
3312 | && tlv_type == ISIS_TLV_OLDSTYLE_IP_REACH) { | |
3313 | struct isis_tlvs *tlvs = dest; | |
3314 | dest = &tlvs->oldstyle_ip_reach; | |
3315 | } else if (context == ISIS_CONTEXT_LSP | |
3316 | && tlv_type == ISIS_TLV_OLDSTYLE_IP_REACH_EXT) { | |
3317 | struct isis_tlvs *tlvs = dest; | |
3318 | dest = &tlvs->oldstyle_ip_reach_ext; | |
3319 | } | |
3320 | ||
3321 | if (context == ISIS_CONTEXT_LSP | |
3322 | && tlv_type == ISIS_TLV_MT_ROUTER_INFO) { | |
3323 | struct isis_tlvs *tlvs = dest; | |
3324 | tlvs->mt_router_info_empty = (tlv_pos >= (size_t)tlv_len); | |
3325 | } | |
3326 | ||
3327 | while (tlv_pos < (size_t)tlv_len) { | |
3328 | rv = unpack_item(mtid, context, tlv_type, tlv_len - tlv_pos, s, | |
3329 | log, dest, indent + 2); | |
3330 | if (rv) | |
3331 | return rv; | |
3332 | ||
3333 | tlv_pos = stream_get_getp(s) - tlv_start; | |
3334 | } | |
3335 | ||
3336 | return 0; | |
3337 | } | |
3338 | ||
3339 | /* Functions to manipulate mt_item_lists */ | |
3340 | ||
3341 | static int isis_mt_item_list_cmp(const struct isis_item_list *a, | |
3342 | const struct isis_item_list *b) | |
3343 | { | |
3344 | if (a->mtid < b->mtid) | |
3345 | return -1; | |
3346 | if (a->mtid > b->mtid) | |
3347 | return 1; | |
3348 | return 0; | |
3349 | } | |
3350 | ||
3351 | RB_PROTOTYPE(isis_mt_item_list, isis_item_list, mt_tree, isis_mt_item_list_cmp); | |
3352 | RB_GENERATE(isis_mt_item_list, isis_item_list, mt_tree, isis_mt_item_list_cmp); | |
3353 | ||
3354 | struct isis_item_list *isis_get_mt_items(struct isis_mt_item_list *m, | |
3355 | uint16_t mtid) | |
3356 | { | |
3357 | struct isis_item_list *rv; | |
3358 | ||
3359 | rv = isis_lookup_mt_items(m, mtid); | |
3360 | if (!rv) { | |
3361 | rv = XCALLOC(MTYPE_ISIS_MT_ITEM_LIST, sizeof(*rv)); | |
3362 | init_item_list(rv); | |
3363 | rv->mtid = mtid; | |
3364 | RB_INSERT(isis_mt_item_list, m, rv); | |
3365 | } | |
3366 | ||
3367 | return rv; | |
3368 | } | |
3369 | ||
3370 | struct isis_item_list *isis_lookup_mt_items(struct isis_mt_item_list *m, | |
3371 | uint16_t mtid) | |
3372 | { | |
3373 | struct isis_item_list key = {.mtid = mtid}; | |
3374 | ||
3375 | return RB_FIND(isis_mt_item_list, m, &key); | |
3376 | } | |
3377 | ||
3378 | static void free_mt_items(enum isis_tlv_context context, | |
3379 | enum isis_tlv_type type, struct isis_mt_item_list *m) | |
3380 | { | |
3381 | struct isis_item_list *n, *nnext; | |
3382 | ||
a2addae8 | 3383 | RB_FOREACH_SAFE (n, isis_mt_item_list, m, nnext) { |
7ef5fefc CF |
3384 | free_items(context, type, n); |
3385 | RB_REMOVE(isis_mt_item_list, m, n); | |
3386 | XFREE(MTYPE_ISIS_MT_ITEM_LIST, n); | |
3387 | } | |
3388 | } | |
3389 | ||
3390 | static void format_mt_items(enum isis_tlv_context context, | |
3391 | enum isis_tlv_type type, | |
3392 | struct isis_mt_item_list *m, struct sbuf *buf, | |
3393 | int indent) | |
3394 | { | |
3395 | struct isis_item_list *n; | |
3396 | ||
a2addae8 | 3397 | RB_FOREACH (n, isis_mt_item_list, m) { |
7ef5fefc CF |
3398 | format_items_(n->mtid, context, type, n, buf, indent); |
3399 | } | |
3400 | } | |
3401 | ||
3402 | static int pack_mt_items(enum isis_tlv_context context, enum isis_tlv_type type, | |
3403 | struct isis_mt_item_list *m, struct stream *s, | |
3404 | struct isis_tlvs **fragment_tlvs, | |
2b64873d | 3405 | const struct pack_order_entry *pe, |
7ef5fefc CF |
3406 | struct isis_tlvs *(*new_fragment)(struct list *l), |
3407 | struct list *new_fragment_arg) | |
3408 | { | |
3409 | struct isis_item_list *n; | |
3410 | ||
a2addae8 | 3411 | RB_FOREACH (n, isis_mt_item_list, m) { |
7ef5fefc CF |
3412 | int rv; |
3413 | ||
3414 | rv = pack_items_(n->mtid, context, type, n, s, fragment_tlvs, | |
3415 | pe, new_fragment, new_fragment_arg); | |
3416 | if (rv) | |
3417 | return rv; | |
3418 | } | |
3419 | ||
3420 | return 0; | |
3421 | } | |
3422 | ||
3423 | static void copy_mt_items(enum isis_tlv_context context, | |
3424 | enum isis_tlv_type type, | |
3425 | struct isis_mt_item_list *src, | |
3426 | struct isis_mt_item_list *dest) | |
3427 | { | |
3428 | struct isis_item_list *n; | |
3429 | ||
3430 | RB_INIT(isis_mt_item_list, dest); | |
3431 | ||
a2addae8 | 3432 | RB_FOREACH (n, isis_mt_item_list, src) { |
7ef5fefc CF |
3433 | copy_items(context, type, n, isis_get_mt_items(dest, n->mtid)); |
3434 | } | |
3435 | } | |
3436 | ||
3437 | /* Functions related to tlvs in general */ | |
3438 | ||
3439 | struct isis_tlvs *isis_alloc_tlvs(void) | |
3440 | { | |
3441 | struct isis_tlvs *result; | |
3442 | ||
841791b6 | 3443 | result = XCALLOC(MTYPE_ISIS_TLV, sizeof(*result)); |
7ef5fefc CF |
3444 | |
3445 | init_item_list(&result->isis_auth); | |
3446 | init_item_list(&result->area_addresses); | |
3447 | init_item_list(&result->mt_router_info); | |
3448 | init_item_list(&result->oldstyle_reach); | |
3449 | init_item_list(&result->lan_neighbor); | |
3450 | init_item_list(&result->lsp_entries); | |
3451 | init_item_list(&result->extended_reach); | |
3452 | RB_INIT(isis_mt_item_list, &result->mt_reach); | |
3453 | init_item_list(&result->oldstyle_ip_reach); | |
3454 | init_item_list(&result->oldstyle_ip_reach_ext); | |
3455 | init_item_list(&result->ipv4_address); | |
3456 | init_item_list(&result->ipv6_address); | |
3457 | init_item_list(&result->extended_ip_reach); | |
3458 | RB_INIT(isis_mt_item_list, &result->mt_ip_reach); | |
3459 | init_item_list(&result->ipv6_reach); | |
3460 | RB_INIT(isis_mt_item_list, &result->mt_ipv6_reach); | |
3461 | ||
3462 | return result; | |
3463 | } | |
3464 | ||
3465 | struct isis_tlvs *isis_copy_tlvs(struct isis_tlvs *tlvs) | |
3466 | { | |
841791b6 | 3467 | struct isis_tlvs *rv = XCALLOC(MTYPE_ISIS_TLV, sizeof(*rv)); |
7ef5fefc CF |
3468 | |
3469 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth, | |
3470 | &rv->isis_auth); | |
3471 | ||
5f77d901 CF |
3472 | rv->purge_originator = |
3473 | copy_tlv_purge_originator(tlvs->purge_originator); | |
3474 | ||
7ef5fefc CF |
3475 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
3476 | &tlvs->area_addresses, &rv->area_addresses); | |
3477 | ||
3478 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
3479 | &tlvs->mt_router_info, &rv->mt_router_info); | |
3480 | ||
b9d4a380 | 3481 | rv->mt_router_info_empty = tlvs->mt_router_info_empty; |
7ef5fefc CF |
3482 | |
3483 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
3484 | &tlvs->oldstyle_reach, &rv->oldstyle_reach); | |
3485 | ||
3486 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
3487 | &tlvs->lan_neighbor, &rv->lan_neighbor); | |
3488 | ||
3489 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries, | |
3490 | &rv->lsp_entries); | |
3491 | ||
3492 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
3493 | &tlvs->extended_reach, &rv->extended_reach); | |
3494 | ||
3495 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach, | |
3496 | &rv->mt_reach); | |
3497 | ||
3498 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
3499 | &tlvs->oldstyle_ip_reach, &rv->oldstyle_ip_reach); | |
3500 | ||
3501 | copy_tlv_protocols_supported(&tlvs->protocols_supported, | |
3502 | &rv->protocols_supported); | |
3503 | ||
3504 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
3505 | &tlvs->oldstyle_ip_reach_ext, &rv->oldstyle_ip_reach_ext); | |
3506 | ||
3507 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, &tlvs->ipv4_address, | |
3508 | &rv->ipv4_address); | |
3509 | ||
3510 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, &tlvs->ipv6_address, | |
3511 | &rv->ipv6_address); | |
3512 | ||
3513 | rv->te_router_id = copy_tlv_te_router_id(tlvs->te_router_id); | |
3514 | ||
3515 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, | |
3516 | &tlvs->extended_ip_reach, &rv->extended_ip_reach); | |
3517 | ||
3518 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
3519 | &tlvs->mt_ip_reach, &rv->mt_ip_reach); | |
3520 | ||
3521 | rv->hostname = copy_tlv_dynamic_hostname(tlvs->hostname); | |
3522 | ||
3523 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach, | |
3524 | &rv->ipv6_reach); | |
3525 | ||
3526 | copy_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
3527 | &tlvs->mt_ipv6_reach, &rv->mt_ipv6_reach); | |
3528 | ||
9fe21208 CF |
3529 | rv->threeway_adj = copy_tlv_threeway_adj(tlvs->threeway_adj); |
3530 | ||
1b3f47d0 OD |
3531 | rv->router_cap = copy_tlv_router_cap(tlvs->router_cap); |
3532 | ||
41a145f1 CF |
3533 | rv->spine_leaf = copy_tlv_spine_leaf(tlvs->spine_leaf); |
3534 | ||
7ef5fefc CF |
3535 | return rv; |
3536 | } | |
3537 | ||
3538 | static void format_tlvs(struct isis_tlvs *tlvs, struct sbuf *buf, int indent) | |
3539 | { | |
3540 | format_tlv_protocols_supported(&tlvs->protocols_supported, buf, indent); | |
3541 | ||
3542 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth, buf, | |
3543 | indent); | |
3544 | ||
5f77d901 CF |
3545 | format_tlv_purge_originator(tlvs->purge_originator, buf, indent); |
3546 | ||
7ef5fefc CF |
3547 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
3548 | &tlvs->area_addresses, buf, indent); | |
3549 | ||
3550 | if (tlvs->mt_router_info_empty) { | |
3551 | sbuf_push(buf, indent, "MT Router Info: None\n"); | |
3552 | } else { | |
3553 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
3554 | &tlvs->mt_router_info, buf, indent); | |
3555 | } | |
3556 | ||
3557 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
3558 | &tlvs->oldstyle_reach, buf, indent); | |
3559 | ||
3560 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
3561 | &tlvs->lan_neighbor, buf, indent); | |
3562 | ||
3563 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries, | |
3564 | buf, indent); | |
3565 | ||
3566 | format_tlv_dynamic_hostname(tlvs->hostname, buf, indent); | |
3567 | format_tlv_te_router_id(tlvs->te_router_id, buf, indent); | |
1b3f47d0 | 3568 | format_tlv_router_cap(tlvs->router_cap, buf, indent); |
7ef5fefc CF |
3569 | |
3570 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
3571 | &tlvs->extended_reach, buf, indent); | |
3572 | ||
3573 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach, | |
3574 | buf, indent); | |
3575 | ||
3576 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
3577 | &tlvs->oldstyle_ip_reach, buf, indent); | |
3578 | ||
3579 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
3580 | &tlvs->oldstyle_ip_reach_ext, buf, indent); | |
3581 | ||
3582 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, | |
3583 | &tlvs->ipv4_address, buf, indent); | |
3584 | ||
3585 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, | |
3586 | &tlvs->ipv6_address, buf, indent); | |
3587 | ||
3588 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, | |
3589 | &tlvs->extended_ip_reach, buf, indent); | |
3590 | ||
3591 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
3592 | &tlvs->mt_ip_reach, buf, indent); | |
3593 | ||
3594 | format_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach, | |
3595 | buf, indent); | |
3596 | ||
3597 | format_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
3598 | &tlvs->mt_ipv6_reach, buf, indent); | |
9fe21208 CF |
3599 | |
3600 | format_tlv_threeway_adj(tlvs->threeway_adj, buf, indent); | |
41a145f1 CF |
3601 | |
3602 | format_tlv_spine_leaf(tlvs->spine_leaf, buf, indent); | |
7ef5fefc CF |
3603 | } |
3604 | ||
3605 | const char *isis_format_tlvs(struct isis_tlvs *tlvs) | |
3606 | { | |
3607 | static struct sbuf buf; | |
3608 | ||
3609 | if (!sbuf_buf(&buf)) | |
3610 | sbuf_init(&buf, NULL, 0); | |
3611 | ||
3612 | sbuf_reset(&buf); | |
3613 | format_tlvs(tlvs, &buf, 0); | |
3614 | return sbuf_buf(&buf); | |
3615 | } | |
3616 | ||
3617 | void isis_free_tlvs(struct isis_tlvs *tlvs) | |
3618 | { | |
3619 | if (!tlvs) | |
3620 | return; | |
3621 | ||
3622 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth); | |
5f77d901 | 3623 | free_tlv_purge_originator(tlvs->purge_originator); |
7ef5fefc CF |
3624 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, |
3625 | &tlvs->area_addresses); | |
3626 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
3627 | &tlvs->mt_router_info); | |
3628 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_REACH, | |
3629 | &tlvs->oldstyle_reach); | |
3630 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_LAN_NEIGHBORS, | |
3631 | &tlvs->lan_neighbor); | |
3632 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_LSP_ENTRY, &tlvs->lsp_entries); | |
3633 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_REACH, | |
3634 | &tlvs->extended_reach); | |
3635 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_REACH, &tlvs->mt_reach); | |
3636 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH, | |
3637 | &tlvs->oldstyle_ip_reach); | |
3638 | free_tlv_protocols_supported(&tlvs->protocols_supported); | |
3639 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_OLDSTYLE_IP_REACH_EXT, | |
3640 | &tlvs->oldstyle_ip_reach_ext); | |
3641 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV4_ADDRESS, | |
3642 | &tlvs->ipv4_address); | |
3643 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_ADDRESS, | |
3644 | &tlvs->ipv6_address); | |
3645 | free_tlv_te_router_id(tlvs->te_router_id); | |
3646 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_EXTENDED_IP_REACH, | |
3647 | &tlvs->extended_ip_reach); | |
3648 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IP_REACH, | |
3649 | &tlvs->mt_ip_reach); | |
3650 | free_tlv_dynamic_hostname(tlvs->hostname); | |
3651 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_IPV6_REACH, &tlvs->ipv6_reach); | |
3652 | free_mt_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_IPV6_REACH, | |
3653 | &tlvs->mt_ipv6_reach); | |
9fe21208 | 3654 | free_tlv_threeway_adj(tlvs->threeway_adj); |
1b3f47d0 | 3655 | free_tlv_router_cap(tlvs->router_cap); |
41a145f1 | 3656 | free_tlv_spine_leaf(tlvs->spine_leaf); |
7ef5fefc | 3657 | |
841791b6 | 3658 | XFREE(MTYPE_ISIS_TLV, tlvs); |
7ef5fefc CF |
3659 | } |
3660 | ||
3661 | static void add_padding(struct stream *s) | |
3662 | { | |
3663 | while (STREAM_WRITEABLE(s)) { | |
3664 | if (STREAM_WRITEABLE(s) == 1) | |
3665 | break; | |
3666 | uint32_t padding_len = STREAM_WRITEABLE(s) - 2; | |
3667 | ||
3668 | if (padding_len > 255) { | |
3669 | if (padding_len == 256) | |
3670 | padding_len = 254; | |
3671 | else | |
3672 | padding_len = 255; | |
3673 | } | |
3674 | ||
3675 | stream_putc(s, ISIS_TLV_PADDING); | |
3676 | stream_putc(s, padding_len); | |
3677 | stream_put(s, NULL, padding_len); | |
3678 | } | |
3679 | } | |
3680 | ||
3681 | #define LSP_REM_LIFETIME_OFF 10 | |
3682 | #define LSP_CHECKSUM_OFF 24 | |
3683 | static void safe_auth_md5(struct stream *s, uint16_t *checksum, | |
3684 | uint16_t *rem_lifetime) | |
3685 | { | |
3686 | memcpy(rem_lifetime, STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, | |
3687 | sizeof(*rem_lifetime)); | |
3688 | memset(STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, 0, sizeof(*rem_lifetime)); | |
3689 | memcpy(checksum, STREAM_DATA(s) + LSP_CHECKSUM_OFF, sizeof(*checksum)); | |
3690 | memset(STREAM_DATA(s) + LSP_CHECKSUM_OFF, 0, sizeof(*checksum)); | |
3691 | } | |
3692 | ||
3693 | static void restore_auth_md5(struct stream *s, uint16_t checksum, | |
3694 | uint16_t rem_lifetime) | |
3695 | { | |
3696 | memcpy(STREAM_DATA(s) + LSP_REM_LIFETIME_OFF, &rem_lifetime, | |
3697 | sizeof(rem_lifetime)); | |
3698 | memcpy(STREAM_DATA(s) + LSP_CHECKSUM_OFF, &checksum, sizeof(checksum)); | |
3699 | } | |
3700 | ||
3701 | static void update_auth_hmac_md5(struct isis_auth *auth, struct stream *s, | |
3702 | bool is_lsp) | |
3703 | { | |
3704 | uint8_t digest[16]; | |
3705 | uint16_t checksum, rem_lifetime; | |
3706 | ||
3707 | if (is_lsp) | |
3708 | safe_auth_md5(s, &checksum, &rem_lifetime); | |
3709 | ||
3710 | memset(STREAM_DATA(s) + auth->offset, 0, 16); | |
6252100f MR |
3711 | #ifdef CRYPTO_OPENSSL |
3712 | uint8_t *result = (uint8_t *)HMAC(EVP_md5(), auth->passwd, | |
3713 | auth->plength, STREAM_DATA(s), | |
3714 | stream_get_endp(s), NULL, NULL); | |
3715 | ||
3716 | memcpy(digest, result, 16); | |
3717 | #elif CRYPTO_INTERNAL | |
7ef5fefc CF |
3718 | hmac_md5(STREAM_DATA(s), stream_get_endp(s), auth->passwd, |
3719 | auth->plength, digest); | |
6252100f | 3720 | #endif |
7ef5fefc CF |
3721 | memcpy(auth->value, digest, 16); |
3722 | memcpy(STREAM_DATA(s) + auth->offset, digest, 16); | |
3723 | ||
3724 | if (is_lsp) | |
3725 | restore_auth_md5(s, checksum, rem_lifetime); | |
3726 | } | |
3727 | ||
3728 | static void update_auth(struct isis_tlvs *tlvs, struct stream *s, bool is_lsp) | |
3729 | { | |
3730 | struct isis_auth *auth_head = (struct isis_auth *)tlvs->isis_auth.head; | |
3731 | ||
3732 | for (struct isis_auth *auth = auth_head; auth; auth = auth->next) { | |
3733 | if (auth->type == ISIS_PASSWD_TYPE_HMAC_MD5) | |
3734 | update_auth_hmac_md5(auth, s, is_lsp); | |
3735 | } | |
3736 | } | |
3737 | ||
2b64873d | 3738 | static int handle_pack_entry(const struct pack_order_entry *pe, |
7ef5fefc CF |
3739 | struct isis_tlvs *tlvs, struct stream *stream, |
3740 | struct isis_tlvs **fragment_tlvs, | |
3741 | struct isis_tlvs *(*new_fragment)(struct list *l), | |
3742 | struct list *new_fragment_arg) | |
3743 | { | |
3744 | int rv; | |
3745 | ||
3746 | if (pe->how_to_pack == ISIS_ITEMS) { | |
3747 | struct isis_item_list *l; | |
3748 | l = (struct isis_item_list *)(((char *)tlvs) | |
3749 | + pe->what_to_pack); | |
3750 | rv = pack_items(pe->context, pe->type, l, stream, fragment_tlvs, | |
3751 | pe, new_fragment, new_fragment_arg); | |
3752 | } else { | |
3753 | struct isis_mt_item_list *l; | |
3754 | l = (struct isis_mt_item_list *)(((char *)tlvs) | |
3755 | + pe->what_to_pack); | |
3756 | rv = pack_mt_items(pe->context, pe->type, l, stream, | |
3757 | fragment_tlvs, pe, new_fragment, | |
3758 | new_fragment_arg); | |
3759 | } | |
3760 | ||
3761 | return rv; | |
3762 | } | |
3763 | ||
3764 | static int pack_tlvs(struct isis_tlvs *tlvs, struct stream *stream, | |
3765 | struct isis_tlvs *fragment_tlvs, | |
3766 | struct isis_tlvs *(*new_fragment)(struct list *l), | |
3767 | struct list *new_fragment_arg) | |
3768 | { | |
3769 | int rv; | |
3770 | ||
3771 | /* When fragmenting, don't add auth as it's already accounted for in the | |
3772 | * size we are given. */ | |
3773 | if (!fragment_tlvs) { | |
996c9314 LB |
3774 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, |
3775 | &tlvs->isis_auth, stream, NULL, NULL, NULL, | |
3776 | NULL); | |
7ef5fefc CF |
3777 | if (rv) |
3778 | return rv; | |
3779 | } | |
3780 | ||
5f77d901 CF |
3781 | rv = pack_tlv_purge_originator(tlvs->purge_originator, stream); |
3782 | if (rv) | |
3783 | return rv; | |
3784 | if (fragment_tlvs) { | |
3785 | fragment_tlvs->purge_originator = | |
3786 | copy_tlv_purge_originator(tlvs->purge_originator); | |
3787 | } | |
3788 | ||
7ef5fefc CF |
3789 | rv = pack_tlv_protocols_supported(&tlvs->protocols_supported, stream); |
3790 | if (rv) | |
3791 | return rv; | |
3792 | if (fragment_tlvs) { | |
3793 | copy_tlv_protocols_supported( | |
3794 | &tlvs->protocols_supported, | |
3795 | &fragment_tlvs->protocols_supported); | |
3796 | } | |
3797 | ||
3798 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, | |
3799 | &tlvs->area_addresses, stream, NULL, NULL, NULL, NULL); | |
3800 | if (rv) | |
3801 | return rv; | |
3802 | if (fragment_tlvs) { | |
3803 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_AREA_ADDRESSES, | |
3804 | &tlvs->area_addresses, | |
3805 | &fragment_tlvs->area_addresses); | |
3806 | } | |
3807 | ||
3808 | ||
3809 | if (tlvs->mt_router_info_empty) { | |
3810 | if (STREAM_WRITEABLE(stream) < 2) | |
3811 | return 1; | |
3812 | stream_putc(stream, ISIS_TLV_MT_ROUTER_INFO); | |
3813 | stream_putc(stream, 0); | |
3814 | if (fragment_tlvs) | |
3815 | fragment_tlvs->mt_router_info_empty = true; | |
3816 | } else { | |
3817 | rv = pack_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
3818 | &tlvs->mt_router_info, stream, NULL, NULL, NULL, | |
3819 | NULL); | |
3820 | if (rv) | |
3821 | return rv; | |
3822 | if (fragment_tlvs) { | |
3823 | copy_items(ISIS_CONTEXT_LSP, ISIS_TLV_MT_ROUTER_INFO, | |
3824 | &tlvs->mt_router_info, | |
3825 | &fragment_tlvs->mt_router_info); | |
3826 | } | |
3827 | } | |
3828 | ||
3829 | rv = pack_tlv_dynamic_hostname(tlvs->hostname, stream); | |
3830 | if (rv) | |
3831 | return rv; | |
3832 | if (fragment_tlvs) | |
3833 | fragment_tlvs->hostname = | |
3834 | copy_tlv_dynamic_hostname(tlvs->hostname); | |
3835 | ||
1b3f47d0 OD |
3836 | rv = pack_tlv_router_cap(tlvs->router_cap, stream); |
3837 | if (rv) | |
3838 | return rv; | |
3839 | if (fragment_tlvs) { | |
3840 | fragment_tlvs->router_cap = | |
3841 | copy_tlv_router_cap(tlvs->router_cap); | |
3842 | } | |
3843 | ||
7ef5fefc CF |
3844 | rv = pack_tlv_te_router_id(tlvs->te_router_id, stream); |
3845 | if (rv) | |
3846 | return rv; | |
3847 | if (fragment_tlvs) { | |
3848 | fragment_tlvs->te_router_id = | |
3849 | copy_tlv_te_router_id(tlvs->te_router_id); | |
3850 | } | |
3851 | ||
9fe21208 CF |
3852 | rv = pack_tlv_threeway_adj(tlvs->threeway_adj, stream); |
3853 | if (rv) | |
3854 | return rv; | |
3855 | if (fragment_tlvs) { | |
3856 | fragment_tlvs->threeway_adj = | |
3857 | copy_tlv_threeway_adj(tlvs->threeway_adj); | |
3858 | } | |
3859 | ||
41a145f1 CF |
3860 | rv = pack_tlv_spine_leaf(tlvs->spine_leaf, stream); |
3861 | if (rv) | |
3862 | return rv; | |
3863 | if (fragment_tlvs) { | |
3864 | fragment_tlvs->spine_leaf = | |
3865 | copy_tlv_spine_leaf(tlvs->spine_leaf); | |
3866 | } | |
3867 | ||
7ef5fefc CF |
3868 | for (size_t pack_idx = 0; pack_idx < array_size(pack_order); |
3869 | pack_idx++) { | |
3870 | rv = handle_pack_entry(&pack_order[pack_idx], tlvs, stream, | |
3871 | fragment_tlvs ? &fragment_tlvs : NULL, | |
3872 | new_fragment, new_fragment_arg); | |
3873 | ||
3874 | if (rv) | |
3875 | return rv; | |
3876 | } | |
3877 | ||
3878 | return 0; | |
3879 | } | |
3880 | ||
3881 | int isis_pack_tlvs(struct isis_tlvs *tlvs, struct stream *stream, | |
3882 | size_t len_pointer, bool pad, bool is_lsp) | |
3883 | { | |
3884 | int rv; | |
3885 | ||
3886 | rv = pack_tlvs(tlvs, stream, NULL, NULL, NULL); | |
3887 | if (rv) | |
3888 | return rv; | |
3889 | ||
3890 | if (pad) | |
3891 | add_padding(stream); | |
3892 | ||
3893 | if (len_pointer != (size_t)-1) { | |
3894 | stream_putw_at(stream, len_pointer, stream_get_endp(stream)); | |
3895 | } | |
3896 | ||
3897 | update_auth(tlvs, stream, is_lsp); | |
3898 | ||
3899 | return 0; | |
3900 | } | |
3901 | ||
3902 | static struct isis_tlvs *new_fragment(struct list *l) | |
3903 | { | |
3904 | struct isis_tlvs *rv = isis_alloc_tlvs(); | |
3905 | ||
3906 | listnode_add(l, rv); | |
3907 | return rv; | |
3908 | } | |
3909 | ||
3910 | struct list *isis_fragment_tlvs(struct isis_tlvs *tlvs, size_t size) | |
3911 | { | |
3912 | struct stream *dummy_stream = stream_new(size); | |
3913 | struct list *rv = list_new(); | |
3914 | struct isis_tlvs *fragment_tlvs = new_fragment(rv); | |
3915 | ||
3916 | if (pack_tlvs(tlvs, dummy_stream, fragment_tlvs, new_fragment, rv)) { | |
3917 | struct listnode *node; | |
3918 | for (ALL_LIST_ELEMENTS_RO(rv, node, fragment_tlvs)) | |
3919 | isis_free_tlvs(fragment_tlvs); | |
6a154c88 | 3920 | list_delete(&rv); |
7ef5fefc CF |
3921 | } |
3922 | ||
3923 | stream_free(dummy_stream); | |
3924 | return rv; | |
3925 | } | |
3926 | ||
3927 | static int unpack_tlv_unknown(enum isis_tlv_context context, uint8_t tlv_type, | |
3928 | uint8_t tlv_len, struct stream *s, | |
3929 | struct sbuf *log, int indent) | |
3930 | { | |
3931 | stream_forward_getp(s, tlv_len); | |
3932 | sbuf_push(log, indent, | |
3933 | "Skipping unknown TLV %" PRIu8 " (%" PRIu8 " bytes)\n", | |
3934 | tlv_type, tlv_len); | |
3935 | return 0; | |
3936 | } | |
3937 | ||
3938 | static int unpack_tlv(enum isis_tlv_context context, size_t avail_len, | |
3939 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 3940 | int indent, bool *unpacked_known_tlvs) |
7ef5fefc CF |
3941 | { |
3942 | uint8_t tlv_type, tlv_len; | |
3943 | const struct tlv_ops *ops; | |
3944 | ||
3945 | sbuf_push(log, indent, "Unpacking TLV...\n"); | |
3946 | ||
3947 | if (avail_len < 2) { | |
3948 | sbuf_push( | |
3949 | log, indent + 2, | |
3950 | "Available data %zu too short to contain a TLV header.\n", | |
3951 | avail_len); | |
3952 | return 1; | |
3953 | } | |
3954 | ||
3955 | tlv_type = stream_getc(stream); | |
3956 | tlv_len = stream_getc(stream); | |
3957 | ||
3958 | sbuf_push(log, indent + 2, | |
3959 | "Found TLV of type %" PRIu8 " and len %" PRIu8 ".\n", | |
3960 | tlv_type, tlv_len); | |
3961 | ||
3962 | if (avail_len < ((size_t)tlv_len) + 2) { | |
98c5bc15 CF |
3963 | sbuf_push(log, indent + 2, |
3964 | "Available data %zu too short for claimed TLV len %" PRIu8 ".\n", | |
3965 | avail_len - 2, tlv_len); | |
7ef5fefc CF |
3966 | return 1; |
3967 | } | |
3968 | ||
3969 | ops = tlv_table[context][tlv_type]; | |
3970 | if (ops && ops->unpack) { | |
bf555bf0 CF |
3971 | if (unpacked_known_tlvs) |
3972 | *unpacked_known_tlvs = true; | |
7ef5fefc CF |
3973 | return ops->unpack(context, tlv_type, tlv_len, stream, log, |
3974 | dest, indent + 2); | |
3975 | } | |
3976 | ||
3977 | return unpack_tlv_unknown(context, tlv_type, tlv_len, stream, log, | |
3978 | indent + 2); | |
3979 | } | |
3980 | ||
3981 | static int unpack_tlvs(enum isis_tlv_context context, size_t avail_len, | |
3982 | struct stream *stream, struct sbuf *log, void *dest, | |
bf555bf0 | 3983 | int indent, bool *unpacked_known_tlvs) |
7ef5fefc CF |
3984 | { |
3985 | int rv; | |
3986 | size_t tlv_start, tlv_pos; | |
3987 | ||
3988 | tlv_start = stream_get_getp(stream); | |
3989 | tlv_pos = 0; | |
3990 | ||
3991 | sbuf_push(log, indent, "Unpacking %zu bytes of %s...\n", avail_len, | |
3992 | (context == ISIS_CONTEXT_LSP) ? "TLVs" : "sub-TLVs"); | |
3993 | ||
3994 | while (tlv_pos < avail_len) { | |
3995 | rv = unpack_tlv(context, avail_len - tlv_pos, stream, log, dest, | |
bf555bf0 | 3996 | indent + 2, unpacked_known_tlvs); |
7ef5fefc CF |
3997 | if (rv) |
3998 | return rv; | |
3999 | ||
4000 | tlv_pos = stream_get_getp(stream) - tlv_start; | |
4001 | } | |
4002 | ||
4003 | return 0; | |
4004 | } | |
4005 | ||
4006 | int isis_unpack_tlvs(size_t avail_len, struct stream *stream, | |
4007 | struct isis_tlvs **dest, const char **log) | |
4008 | { | |
4009 | static struct sbuf logbuf; | |
4010 | int indent = 0; | |
4011 | int rv; | |
4012 | struct isis_tlvs *result; | |
4013 | ||
4014 | if (!sbuf_buf(&logbuf)) | |
4015 | sbuf_init(&logbuf, NULL, 0); | |
4016 | ||
4017 | sbuf_reset(&logbuf); | |
4018 | if (avail_len > STREAM_READABLE(stream)) { | |
4019 | sbuf_push(&logbuf, indent, | |
4020 | "Stream doesn't contain sufficient data. " | |
4021 | "Claimed %zu, available %zu\n", | |
4022 | avail_len, STREAM_READABLE(stream)); | |
4023 | return 1; | |
4024 | } | |
4025 | ||
4026 | result = isis_alloc_tlvs(); | |
4027 | rv = unpack_tlvs(ISIS_CONTEXT_LSP, avail_len, stream, &logbuf, result, | |
bf555bf0 | 4028 | indent, NULL); |
7ef5fefc CF |
4029 | |
4030 | *log = sbuf_buf(&logbuf); | |
4031 | *dest = result; | |
4032 | ||
4033 | return rv; | |
4034 | } | |
4035 | ||
4036 | #define TLV_OPS(_name_, _desc_) \ | |
4037 | static const struct tlv_ops tlv_##_name_##_ops = { \ | |
4038 | .name = _desc_, .unpack = unpack_tlv_##_name_, \ | |
4039 | } | |
4040 | ||
4041 | #define ITEM_TLV_OPS(_name_, _desc_) \ | |
4042 | static const struct tlv_ops tlv_##_name_##_ops = { \ | |
4043 | .name = _desc_, \ | |
4044 | .unpack = unpack_tlv_with_items, \ | |
98c5bc15 | 4045 | \ |
7ef5fefc CF |
4046 | .pack_item = pack_item_##_name_, \ |
4047 | .free_item = free_item_##_name_, \ | |
4048 | .unpack_item = unpack_item_##_name_, \ | |
4049 | .format_item = format_item_##_name_, \ | |
4050 | .copy_item = copy_item_##_name_} | |
4051 | ||
4052 | #define SUBTLV_OPS(_name_, _desc_) \ | |
4053 | static const struct tlv_ops subtlv_##_name_##_ops = { \ | |
4054 | .name = _desc_, .unpack = unpack_subtlv_##_name_, \ | |
4055 | } | |
4056 | ||
bd507085 CF |
4057 | #define ITEM_SUBTLV_OPS(_name_, _desc_) \ |
4058 | ITEM_TLV_OPS(_name_, _desc_) | |
4059 | ||
7ef5fefc CF |
4060 | ITEM_TLV_OPS(area_address, "TLV 1 Area Addresses"); |
4061 | ITEM_TLV_OPS(oldstyle_reach, "TLV 2 IS Reachability"); | |
4062 | ITEM_TLV_OPS(lan_neighbor, "TLV 6 LAN Neighbors"); | |
4063 | ITEM_TLV_OPS(lsp_entry, "TLV 9 LSP Entries"); | |
4064 | ITEM_TLV_OPS(auth, "TLV 10 IS-IS Auth"); | |
5f77d901 | 4065 | TLV_OPS(purge_originator, "TLV 13 Purge Originator Identification"); |
7ef5fefc CF |
4066 | ITEM_TLV_OPS(extended_reach, "TLV 22 Extended Reachability"); |
4067 | ITEM_TLV_OPS(oldstyle_ip_reach, "TLV 128/130 IP Reachability"); | |
4068 | TLV_OPS(protocols_supported, "TLV 129 Protocols Supported"); | |
4069 | ITEM_TLV_OPS(ipv4_address, "TLV 132 IPv4 Interface Address"); | |
4070 | TLV_OPS(te_router_id, "TLV 134 TE Router ID"); | |
4071 | ITEM_TLV_OPS(extended_ip_reach, "TLV 135 Extended IP Reachability"); | |
4072 | TLV_OPS(dynamic_hostname, "TLV 137 Dynamic Hostname"); | |
41a145f1 | 4073 | TLV_OPS(spine_leaf, "TLV 150 Spine Leaf Extensions"); |
7ef5fefc | 4074 | ITEM_TLV_OPS(mt_router_info, "TLV 229 MT Router Information"); |
9fe21208 | 4075 | TLV_OPS(threeway_adj, "TLV 240 P2P Three-Way Adjacency"); |
7ef5fefc CF |
4076 | ITEM_TLV_OPS(ipv6_address, "TLV 232 IPv6 Interface Address"); |
4077 | ITEM_TLV_OPS(ipv6_reach, "TLV 236 IPv6 Reachability"); | |
1b3f47d0 | 4078 | TLV_OPS(router_cap, "TLV 242 Router Capability"); |
7ef5fefc | 4079 | |
bd507085 | 4080 | ITEM_SUBTLV_OPS(prefix_sid, "Sub-TLV 3 SR Prefix-SID"); |
7ef5fefc CF |
4081 | SUBTLV_OPS(ipv6_source_prefix, "Sub-TLV 22 IPv6 Source Prefix"); |
4082 | ||
2b64873d | 4083 | static const struct tlv_ops *const tlv_table[ISIS_CONTEXT_MAX][ISIS_TLV_MAX] = { |
98c5bc15 CF |
4084 | [ISIS_CONTEXT_LSP] = { |
4085 | [ISIS_TLV_AREA_ADDRESSES] = &tlv_area_address_ops, | |
4086 | [ISIS_TLV_OLDSTYLE_REACH] = &tlv_oldstyle_reach_ops, | |
4087 | [ISIS_TLV_LAN_NEIGHBORS] = &tlv_lan_neighbor_ops, | |
4088 | [ISIS_TLV_LSP_ENTRY] = &tlv_lsp_entry_ops, | |
4089 | [ISIS_TLV_AUTH] = &tlv_auth_ops, | |
5f77d901 | 4090 | [ISIS_TLV_PURGE_ORIGINATOR] = &tlv_purge_originator_ops, |
98c5bc15 | 4091 | [ISIS_TLV_EXTENDED_REACH] = &tlv_extended_reach_ops, |
98c5bc15 CF |
4092 | [ISIS_TLV_OLDSTYLE_IP_REACH] = &tlv_oldstyle_ip_reach_ops, |
4093 | [ISIS_TLV_PROTOCOLS_SUPPORTED] = &tlv_protocols_supported_ops, | |
4094 | [ISIS_TLV_OLDSTYLE_IP_REACH_EXT] = &tlv_oldstyle_ip_reach_ops, | |
4095 | [ISIS_TLV_IPV4_ADDRESS] = &tlv_ipv4_address_ops, | |
4096 | [ISIS_TLV_TE_ROUTER_ID] = &tlv_te_router_id_ops, | |
4097 | [ISIS_TLV_EXTENDED_IP_REACH] = &tlv_extended_ip_reach_ops, | |
98c5bc15 | 4098 | [ISIS_TLV_DYNAMIC_HOSTNAME] = &tlv_dynamic_hostname_ops, |
41a145f1 | 4099 | [ISIS_TLV_SPINE_LEAF_EXT] = &tlv_spine_leaf_ops, |
1b3f47d0 | 4100 | [ISIS_TLV_MT_REACH] = &tlv_extended_reach_ops, |
98c5bc15 CF |
4101 | [ISIS_TLV_MT_ROUTER_INFO] = &tlv_mt_router_info_ops, |
4102 | [ISIS_TLV_IPV6_ADDRESS] = &tlv_ipv6_address_ops, | |
1b3f47d0 | 4103 | [ISIS_TLV_MT_IP_REACH] = &tlv_extended_ip_reach_ops, |
98c5bc15 CF |
4104 | [ISIS_TLV_IPV6_REACH] = &tlv_ipv6_reach_ops, |
4105 | [ISIS_TLV_MT_IPV6_REACH] = &tlv_ipv6_reach_ops, | |
1b3f47d0 OD |
4106 | [ISIS_TLV_THREE_WAY_ADJ] = &tlv_threeway_adj_ops, |
4107 | [ISIS_TLV_ROUTER_CAPABILITY] = &tlv_router_cap_ops, | |
98c5bc15 | 4108 | }, |
3e300703 | 4109 | [ISIS_CONTEXT_SUBTLV_NE_REACH] = {}, |
bd507085 CF |
4110 | [ISIS_CONTEXT_SUBTLV_IP_REACH] = { |
4111 | [ISIS_SUBTLV_PREFIX_SID] = &tlv_prefix_sid_ops, | |
4112 | }, | |
98c5bc15 | 4113 | [ISIS_CONTEXT_SUBTLV_IPV6_REACH] = { |
bd507085 | 4114 | [ISIS_SUBTLV_PREFIX_SID] = &tlv_prefix_sid_ops, |
98c5bc15 CF |
4115 | [ISIS_SUBTLV_IPV6_SOURCE_PREFIX] = &subtlv_ipv6_source_prefix_ops, |
4116 | } | |
4117 | }; | |
7ef5fefc CF |
4118 | |
4119 | /* Accessor functions */ | |
4120 | ||
4121 | void isis_tlvs_add_auth(struct isis_tlvs *tlvs, struct isis_passwd *passwd) | |
4122 | { | |
4123 | free_items(ISIS_CONTEXT_LSP, ISIS_TLV_AUTH, &tlvs->isis_auth); | |
4124 | init_item_list(&tlvs->isis_auth); | |
4125 | ||
4126 | if (passwd->type == ISIS_PASSWD_TYPE_UNUSED) | |
4127 | return; | |
4128 | ||
841791b6 | 4129 | struct isis_auth *auth = XCALLOC(MTYPE_ISIS_TLV, sizeof(*auth)); |
7ef5fefc CF |
4130 | |
4131 | auth->type = passwd->type; | |
4132 | ||
4133 | auth->plength = passwd->len; | |
4134 | memcpy(auth->passwd, passwd->passwd, | |
4135 | MIN(sizeof(auth->passwd), sizeof(passwd->passwd))); | |
4136 | ||
4137 | if (auth->type == ISIS_PASSWD_TYPE_CLEARTXT) { | |
4138 | auth->length = passwd->len; | |
4139 | memcpy(auth->value, passwd->passwd, | |
4140 | MIN(sizeof(auth->value), sizeof(passwd->passwd))); | |
4141 | } | |
4142 | ||
4143 | append_item(&tlvs->isis_auth, (struct isis_item *)auth); | |
4144 | } | |
4145 | ||
4146 | void isis_tlvs_add_area_addresses(struct isis_tlvs *tlvs, | |
4147 | struct list *addresses) | |
4148 | { | |
4149 | struct listnode *node; | |
4150 | struct area_addr *area_addr; | |
4151 | ||
4152 | for (ALL_LIST_ELEMENTS_RO(addresses, node, area_addr)) { | |
4153 | struct isis_area_address *a = | |
841791b6 | 4154 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
4155 | |
4156 | a->len = area_addr->addr_len; | |
4157 | memcpy(a->addr, area_addr->area_addr, 20); | |
4158 | append_item(&tlvs->area_addresses, (struct isis_item *)a); | |
4159 | } | |
4160 | } | |
4161 | ||
4162 | void isis_tlvs_add_lan_neighbors(struct isis_tlvs *tlvs, struct list *neighbors) | |
4163 | { | |
4164 | struct listnode *node; | |
d7c0a89a | 4165 | uint8_t *snpa; |
7ef5fefc CF |
4166 | |
4167 | for (ALL_LIST_ELEMENTS_RO(neighbors, node, snpa)) { | |
4168 | struct isis_lan_neighbor *n = | |
841791b6 | 4169 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*n)); |
7ef5fefc CF |
4170 | |
4171 | memcpy(n->mac, snpa, 6); | |
4172 | append_item(&tlvs->lan_neighbor, (struct isis_item *)n); | |
4173 | } | |
4174 | } | |
4175 | ||
4176 | void isis_tlvs_set_protocols_supported(struct isis_tlvs *tlvs, | |
4177 | struct nlpids *nlpids) | |
4178 | { | |
4179 | tlvs->protocols_supported.count = nlpids->count; | |
0a22ddfb | 4180 | XFREE(MTYPE_ISIS_TLV, tlvs->protocols_supported.protocols); |
7ef5fefc CF |
4181 | if (nlpids->count) { |
4182 | tlvs->protocols_supported.protocols = | |
841791b6 | 4183 | XCALLOC(MTYPE_ISIS_TLV, nlpids->count); |
7ef5fefc CF |
4184 | memcpy(tlvs->protocols_supported.protocols, nlpids->nlpids, |
4185 | nlpids->count); | |
4186 | } else { | |
4187 | tlvs->protocols_supported.protocols = NULL; | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | void isis_tlvs_add_mt_router_info(struct isis_tlvs *tlvs, uint16_t mtid, | |
4192 | bool overload, bool attached) | |
4193 | { | |
841791b6 | 4194 | struct isis_mt_router_info *i = XCALLOC(MTYPE_ISIS_TLV, sizeof(*i)); |
7ef5fefc CF |
4195 | |
4196 | i->overload = overload; | |
4197 | i->attached = attached; | |
4198 | i->mtid = mtid; | |
4199 | append_item(&tlvs->mt_router_info, (struct isis_item *)i); | |
4200 | } | |
4201 | ||
4202 | void isis_tlvs_add_ipv4_address(struct isis_tlvs *tlvs, struct in_addr *addr) | |
4203 | { | |
841791b6 | 4204 | struct isis_ipv4_address *a = XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
4205 | a->addr = *addr; |
4206 | append_item(&tlvs->ipv4_address, (struct isis_item *)a); | |
4207 | } | |
4208 | ||
4209 | ||
4210 | void isis_tlvs_add_ipv4_addresses(struct isis_tlvs *tlvs, | |
4211 | struct list *addresses) | |
4212 | { | |
4213 | struct listnode *node; | |
4214 | struct prefix_ipv4 *ip_addr; | |
bb5c77d7 | 4215 | unsigned int addr_count = 0; |
7ef5fefc | 4216 | |
bb5c77d7 | 4217 | for (ALL_LIST_ELEMENTS_RO(addresses, node, ip_addr)) { |
7ef5fefc | 4218 | isis_tlvs_add_ipv4_address(tlvs, &ip_addr->prefix); |
bb5c77d7 CF |
4219 | addr_count++; |
4220 | if (addr_count >= 63) | |
4221 | break; | |
4222 | } | |
7ef5fefc CF |
4223 | } |
4224 | ||
4225 | void isis_tlvs_add_ipv6_addresses(struct isis_tlvs *tlvs, | |
4226 | struct list *addresses) | |
4227 | { | |
4228 | struct listnode *node; | |
4229 | struct prefix_ipv6 *ip_addr; | |
1f8286c9 | 4230 | unsigned int addr_count = 0; |
7ef5fefc CF |
4231 | |
4232 | for (ALL_LIST_ELEMENTS_RO(addresses, node, ip_addr)) { | |
1f8286c9 DS |
4233 | if (addr_count >= 15) |
4234 | break; | |
4235 | ||
7ef5fefc | 4236 | struct isis_ipv6_address *a = |
841791b6 | 4237 | XCALLOC(MTYPE_ISIS_TLV, sizeof(*a)); |
7ef5fefc CF |
4238 | |
4239 | a->addr = ip_addr->prefix; | |
4240 | append_item(&tlvs->ipv6_address, (struct isis_item *)a); | |
1f8286c9 | 4241 | addr_count++; |
7ef5fefc CF |
4242 | } |
4243 | } | |
4244 | ||
4245 | typedef bool (*auth_validator_func)(struct isis_passwd *passwd, | |
4246 | struct stream *stream, | |
4247 | struct isis_auth *auth, bool is_lsp); | |
4248 | ||
4249 | static bool auth_validator_cleartxt(struct isis_passwd *passwd, | |
4250 | struct stream *stream, | |
4251 | struct isis_auth *auth, bool is_lsp) | |
4252 | { | |
4253 | return (auth->length == passwd->len | |
4254 | && !memcmp(auth->value, passwd->passwd, passwd->len)); | |
4255 | } | |
4256 | ||
4257 | static bool auth_validator_hmac_md5(struct isis_passwd *passwd, | |
4258 | struct stream *stream, | |
4259 | struct isis_auth *auth, bool is_lsp) | |
4260 | { | |
4261 | uint8_t digest[16]; | |
4262 | uint16_t checksum; | |
4263 | uint16_t rem_lifetime; | |
4264 | ||
4265 | if (is_lsp) | |
4266 | safe_auth_md5(stream, &checksum, &rem_lifetime); | |
4267 | ||
4268 | memset(STREAM_DATA(stream) + auth->offset, 0, 16); | |
6252100f MR |
4269 | #ifdef CRYPTO_OPENSSL |
4270 | uint8_t *result = (uint8_t *)HMAC(EVP_md5(), passwd->passwd, | |
4271 | passwd->len, STREAM_DATA(stream), | |
4272 | stream_get_endp(stream), NULL, NULL); | |
4273 | ||
4274 | memcpy(digest, result, 16); | |
4275 | #elif CRYPTO_INTERNAL | |
7ef5fefc CF |
4276 | hmac_md5(STREAM_DATA(stream), stream_get_endp(stream), passwd->passwd, |
4277 | passwd->len, digest); | |
6252100f | 4278 | #endif |
7ef5fefc CF |
4279 | memcpy(STREAM_DATA(stream) + auth->offset, auth->value, 16); |
4280 | ||
4281 | bool rv = !memcmp(digest, auth->value, 16); | |
4282 | ||
4283 | if (is_lsp) | |
4284 | restore_auth_md5(stream, checksum, rem_lifetime); | |
4285 | ||
4286 | return rv; | |
4287 | } | |
4288 | ||
4289 | static const auth_validator_func auth_validators[] = { | |
4290 | [ISIS_PASSWD_TYPE_CLEARTXT] = auth_validator_cleartxt, | |
4291 | [ISIS_PASSWD_TYPE_HMAC_MD5] = auth_validator_hmac_md5, | |
4292 | }; | |
4293 | ||
3380c990 EDP |
4294 | int isis_tlvs_auth_is_valid(struct isis_tlvs *tlvs, struct isis_passwd *passwd, |
4295 | struct stream *stream, bool is_lsp) | |
7ef5fefc CF |
4296 | { |
4297 | /* If no auth is set, always pass authentication */ | |
4298 | if (!passwd->type) | |
3380c990 | 4299 | return ISIS_AUTH_OK; |
7ef5fefc CF |
4300 | |
4301 | /* If we don't known how to validate the auth, return invalid */ | |
4302 | if (passwd->type >= array_size(auth_validators) | |
4303 | || !auth_validators[passwd->type]) | |
3380c990 | 4304 | return ISIS_AUTH_NO_VALIDATOR; |
7ef5fefc CF |
4305 | |
4306 | struct isis_auth *auth_head = (struct isis_auth *)tlvs->isis_auth.head; | |
4307 | struct isis_auth *auth; | |
4308 | for (auth = auth_head; auth; auth = auth->next) { | |
4309 | if (auth->type == passwd->type) | |
4310 | break; | |
4311 | } | |
4312 | ||
4313 | /* If matching auth TLV could not be found, return invalid */ | |
4314 | if (!auth) | |
3380c990 EDP |
4315 | return ISIS_AUTH_TYPE_FAILURE; |
4316 | ||
7ef5fefc CF |
4317 | |
4318 | /* Perform validation and return result */ | |
3380c990 EDP |
4319 | if (auth_validators[passwd->type](passwd, stream, auth, is_lsp)) |
4320 | return ISIS_AUTH_OK; | |
4321 | else | |
4322 | return ISIS_AUTH_FAILURE; | |
7ef5fefc CF |
4323 | } |
4324 | ||
4325 | bool isis_tlvs_area_addresses_match(struct isis_tlvs *tlvs, | |
4326 | struct list *addresses) | |
4327 | { | |
4328 | struct isis_area_address *addr_head; | |
4329 | ||
4330 | addr_head = (struct isis_area_address *)tlvs->area_addresses.head; | |
4331 | for (struct isis_area_address *addr = addr_head; addr; | |
4332 | addr = addr->next) { | |
4333 | struct listnode *node; | |
4334 | struct area_addr *a; | |
4335 | ||
4336 | for (ALL_LIST_ELEMENTS_RO(addresses, node, a)) { | |
4337 | if (a->addr_len == addr->len | |
4338 | && !memcmp(a->area_addr, addr->addr, addr->len)) | |
4339 | return true; | |
4340 | } | |
4341 | } | |
4342 | ||
4343 | return false; | |
4344 | } | |
4345 | ||
4346 | static void tlvs_area_addresses_to_adj(struct isis_tlvs *tlvs, | |
4347 | struct isis_adjacency *adj, | |
4348 | bool *changed) | |
4349 | { | |
4350 | if (adj->area_address_count != tlvs->area_addresses.count) { | |
4351 | *changed = true; | |
4352 | adj->area_address_count = tlvs->area_addresses.count; | |
4353 | adj->area_addresses = XREALLOC( | |
4354 | MTYPE_ISIS_ADJACENCY_INFO, adj->area_addresses, | |
4355 | adj->area_address_count * sizeof(*adj->area_addresses)); | |
4356 | } | |
4357 | ||
4358 | struct isis_area_address *addr = NULL; | |
4359 | for (unsigned int i = 0; i < tlvs->area_addresses.count; i++) { | |
4360 | if (!addr) | |
4361 | addr = (struct isis_area_address *) | |
4362 | tlvs->area_addresses.head; | |
4363 | else | |
4364 | addr = addr->next; | |
4365 | ||
4366 | if (adj->area_addresses[i].addr_len == addr->len | |
4367 | && !memcmp(adj->area_addresses[i].area_addr, addr->addr, | |
4368 | addr->len)) { | |
4369 | continue; | |
4370 | } | |
4371 | ||
4372 | *changed = true; | |
4373 | adj->area_addresses[i].addr_len = addr->len; | |
4374 | memcpy(adj->area_addresses[i].area_addr, addr->addr, addr->len); | |
4375 | } | |
4376 | } | |
4377 | ||
4378 | static void tlvs_protocols_supported_to_adj(struct isis_tlvs *tlvs, | |
4379 | struct isis_adjacency *adj, | |
4380 | bool *changed) | |
4381 | { | |
4382 | bool ipv4_supported = false, ipv6_supported = false; | |
4383 | ||
4384 | for (uint8_t i = 0; i < tlvs->protocols_supported.count; i++) { | |
4385 | if (tlvs->protocols_supported.protocols[i] == NLPID_IP) | |
4386 | ipv4_supported = true; | |
4387 | if (tlvs->protocols_supported.protocols[i] == NLPID_IPV6) | |
4388 | ipv6_supported = true; | |
4389 | } | |
4390 | ||
3e300703 | 4391 | struct nlpids reduced = {}; |
7ef5fefc CF |
4392 | |
4393 | if (ipv4_supported && ipv6_supported) { | |
4394 | reduced.count = 2; | |
4395 | reduced.nlpids[0] = NLPID_IP; | |
4396 | reduced.nlpids[1] = NLPID_IPV6; | |
4397 | } else if (ipv4_supported) { | |
4398 | reduced.count = 1; | |
4399 | reduced.nlpids[0] = NLPID_IP; | |
4400 | } else if (ipv6_supported) { | |
4401 | reduced.count = 1; | |
4773e4f8 | 4402 | reduced.nlpids[0] = NLPID_IPV6; |
7ef5fefc CF |
4403 | } else { |
4404 | reduced.count = 0; | |
4405 | } | |
4406 | ||
4407 | if (adj->nlpids.count == reduced.count | |
4408 | && !memcmp(adj->nlpids.nlpids, reduced.nlpids, reduced.count)) | |
4409 | return; | |
4410 | ||
4411 | *changed = true; | |
4412 | adj->nlpids.count = reduced.count; | |
4413 | memcpy(adj->nlpids.nlpids, reduced.nlpids, reduced.count); | |
4414 | } | |
4415 | ||
4416 | static void tlvs_ipv4_addresses_to_adj(struct isis_tlvs *tlvs, | |
4417 | struct isis_adjacency *adj, | |
4418 | bool *changed) | |
4419 | { | |
4420 | if (adj->ipv4_address_count != tlvs->ipv4_address.count) { | |
4421 | *changed = true; | |
4422 | adj->ipv4_address_count = tlvs->ipv4_address.count; | |
4423 | adj->ipv4_addresses = XREALLOC( | |
4424 | MTYPE_ISIS_ADJACENCY_INFO, adj->ipv4_addresses, | |
4425 | adj->ipv4_address_count * sizeof(*adj->ipv4_addresses)); | |
4426 | } | |
4427 | ||
4428 | struct isis_ipv4_address *addr = NULL; | |
4429 | for (unsigned int i = 0; i < tlvs->ipv4_address.count; i++) { | |
4430 | if (!addr) | |
4431 | addr = (struct isis_ipv4_address *) | |
4432 | tlvs->ipv4_address.head; | |
4433 | else | |
4434 | addr = addr->next; | |
4435 | ||
4436 | if (!memcmp(&adj->ipv4_addresses[i], &addr->addr, | |
4437 | sizeof(addr->addr))) | |
4438 | continue; | |
4439 | ||
4440 | *changed = true; | |
4441 | adj->ipv4_addresses[i] = addr->addr; | |
4442 | } | |
4443 | } | |
4444 | ||
4445 | static void tlvs_ipv6_addresses_to_adj(struct isis_tlvs *tlvs, | |
4446 | struct isis_adjacency *adj, | |
4447 | bool *changed) | |
4448 | { | |
4449 | if (adj->ipv6_address_count != tlvs->ipv6_address.count) { | |
4450 | *changed = true; | |
4451 | adj->ipv6_address_count = tlvs->ipv6_address.count; | |
4452 | adj->ipv6_addresses = XREALLOC( | |
4453 | MTYPE_ISIS_ADJACENCY_INFO, adj->ipv6_addresses, | |
4454 | adj->ipv6_address_count * sizeof(*adj->ipv6_addresses)); | |
4455 | } | |
4456 | ||
4457 | struct isis_ipv6_address *addr = NULL; | |
4458 | for (unsigned int i = 0; i < tlvs->ipv6_address.count; i++) { | |
4459 | if (!addr) | |
4460 | addr = (struct isis_ipv6_address *) | |
4461 | tlvs->ipv6_address.head; | |
4462 | else | |
4463 | addr = addr->next; | |
4464 | ||
4465 | if (!memcmp(&adj->ipv6_addresses[i], &addr->addr, | |
4466 | sizeof(addr->addr))) | |
4467 | continue; | |
4468 | ||
4469 | *changed = true; | |
4470 | adj->ipv6_addresses[i] = addr->addr; | |
4471 | } | |
4472 | } | |
4473 | ||
4474 | void isis_tlvs_to_adj(struct isis_tlvs *tlvs, struct isis_adjacency *adj, | |
4475 | bool *changed) | |
4476 | { | |
4477 | *changed = false; | |
4478 | ||
4479 | tlvs_area_addresses_to_adj(tlvs, adj, changed); | |
4480 | tlvs_protocols_supported_to_adj(tlvs, adj, changed); | |
4481 | tlvs_ipv4_addresses_to_adj(tlvs, adj, changed); | |
4482 | tlvs_ipv6_addresses_to_adj(tlvs, adj, changed); | |
4483 | } | |
4484 | ||
4485 | bool isis_tlvs_own_snpa_found(struct isis_tlvs *tlvs, uint8_t *snpa) | |
4486 | { | |
4487 | struct isis_lan_neighbor *ne_head; | |
4488 | ||
4489 | ne_head = (struct isis_lan_neighbor *)tlvs->lan_neighbor.head; | |
4490 | for (struct isis_lan_neighbor *ne = ne_head; ne; ne = ne->next) { | |
4491 | if (!memcmp(ne->mac, snpa, ETH_ALEN)) | |
4492 | return true; | |
4493 | } | |
4494 | ||
4495 | return false; | |
4496 | } | |
4497 | ||
4498 | void isis_tlvs_add_lsp_entry(struct isis_tlvs *tlvs, struct isis_lsp *lsp) | |
4499 | { | |
841791b6 | 4500 | struct isis_lsp_entry *entry = XCALLOC(MTYPE_ISIS_TLV, sizeof(*entry)); |
7ef5fefc CF |
4501 | |
4502 | entry->rem_lifetime = lsp->hdr.rem_lifetime; | |
4503 | memcpy(entry->id, lsp->hdr.lsp_id, ISIS_SYS_ID_LEN + 2); | |
4504 | entry->checksum = lsp->hdr.checksum; | |
4505 | entry->seqno = lsp->hdr.seqno; | |
4506 | entry->lsp = lsp; | |
4507 | ||
4508 | append_item(&tlvs->lsp_entries, (struct isis_item *)entry); | |
4509 | } | |
4510 | ||
4511 | void isis_tlvs_add_csnp_entries(struct isis_tlvs *tlvs, uint8_t *start_id, | |
4512 | uint8_t *stop_id, uint16_t num_lsps, | |
4bef0ec4 DL |
4513 | struct lspdb_head *head, |
4514 | struct isis_lsp **last_lsp) | |
7ef5fefc | 4515 | { |
4bef0ec4 DL |
4516 | struct isis_lsp searchfor; |
4517 | struct isis_lsp *first, *lsp; | |
4518 | ||
4519 | memcpy(&searchfor.hdr.lsp_id, start_id, sizeof(searchfor.hdr.lsp_id)); | |
4520 | first = lspdb_find_gteq(head, &searchfor); | |
7ef5fefc CF |
4521 | if (!first) |
4522 | return; | |
4523 | ||
81fddbe7 | 4524 | frr_each_from (lspdb, head, lsp, first) { |
4bef0ec4 DL |
4525 | if (memcmp(lsp->hdr.lsp_id, stop_id, sizeof(lsp->hdr.lsp_id)) |
4526 | > 0 || tlvs->lsp_entries.count == num_lsps) | |
7ef5fefc | 4527 | break; |
4bef0ec4 DL |
4528 | |
4529 | isis_tlvs_add_lsp_entry(tlvs, lsp); | |
4530 | *last_lsp = lsp; | |
7ef5fefc CF |
4531 | } |
4532 | } | |
4533 | ||
4534 | void isis_tlvs_set_dynamic_hostname(struct isis_tlvs *tlvs, | |
4535 | const char *hostname) | |
4536 | { | |
841791b6 | 4537 | XFREE(MTYPE_ISIS_TLV, tlvs->hostname); |
7ef5fefc | 4538 | if (hostname) |
841791b6 | 4539 | tlvs->hostname = XSTRDUP(MTYPE_ISIS_TLV, hostname); |
7ef5fefc CF |
4540 | } |
4541 | ||
1b3f47d0 OD |
4542 | /* Set Router Capability TLV parameters */ |
4543 | void isis_tlvs_set_router_capability(struct isis_tlvs *tlvs, | |
4544 | const struct isis_router_cap *cap) | |
4545 | { | |
4546 | XFREE(MTYPE_ISIS_TLV, tlvs->router_cap); | |
4547 | if (!cap) | |
4548 | return; | |
4549 | ||
4550 | tlvs->router_cap = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->router_cap)); | |
4551 | *tlvs->router_cap = *cap; | |
4552 | } | |
4553 | ||
7ef5fefc CF |
4554 | void isis_tlvs_set_te_router_id(struct isis_tlvs *tlvs, |
4555 | const struct in_addr *id) | |
4556 | { | |
841791b6 | 4557 | XFREE(MTYPE_ISIS_TLV, tlvs->te_router_id); |
7ef5fefc CF |
4558 | if (!id) |
4559 | return; | |
841791b6 | 4560 | tlvs->te_router_id = XCALLOC(MTYPE_ISIS_TLV, sizeof(*id)); |
7ef5fefc CF |
4561 | memcpy(tlvs->te_router_id, id, sizeof(*id)); |
4562 | } | |
4563 | ||
4564 | void isis_tlvs_add_oldstyle_ip_reach(struct isis_tlvs *tlvs, | |
4565 | struct prefix_ipv4 *dest, uint8_t metric) | |
4566 | { | |
841791b6 | 4567 | struct isis_oldstyle_ip_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
4568 | |
4569 | r->metric = metric; | |
4570 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
4571 | apply_mask_ipv4(&r->prefix); | |
4572 | append_item(&tlvs->oldstyle_ip_reach, (struct isis_item *)r); | |
4573 | } | |
4574 | ||
1b3f47d0 OD |
4575 | void isis_tlvs_add_adj_sid(struct isis_ext_subtlvs *exts, |
4576 | struct isis_adj_sid *adj) | |
4577 | { | |
4578 | append_item(&exts->adj_sid, (struct isis_item *)adj); | |
4579 | SET_SUBTLV(exts, EXT_ADJ_SID); | |
4580 | } | |
4581 | ||
4582 | void isis_tlvs_del_adj_sid(struct isis_ext_subtlvs *exts, | |
4583 | struct isis_adj_sid *adj) | |
4584 | { | |
4585 | delete_item(&exts->adj_sid, (struct isis_item *)adj); | |
4586 | XFREE(MTYPE_ISIS_SUBTLV, adj); | |
4587 | if (exts->adj_sid.count == 0) | |
4588 | UNSET_SUBTLV(exts, EXT_ADJ_SID); | |
4589 | } | |
4590 | ||
4591 | void isis_tlvs_add_lan_adj_sid(struct isis_ext_subtlvs *exts, | |
4592 | struct isis_lan_adj_sid *lan) | |
4593 | { | |
4594 | append_item(&exts->lan_sid, (struct isis_item *)lan); | |
4595 | SET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
4596 | } | |
4597 | ||
4598 | void isis_tlvs_del_lan_adj_sid(struct isis_ext_subtlvs *exts, | |
4599 | struct isis_lan_adj_sid *lan) | |
4600 | { | |
4601 | delete_item(&exts->lan_sid, (struct isis_item *)lan); | |
4602 | XFREE(MTYPE_ISIS_SUBTLV, lan); | |
4603 | if (exts->lan_sid.count == 0) | |
4604 | UNSET_SUBTLV(exts, EXT_LAN_ADJ_SID); | |
4605 | } | |
4606 | ||
7ef5fefc CF |
4607 | void isis_tlvs_add_extended_ip_reach(struct isis_tlvs *tlvs, |
4608 | struct prefix_ipv4 *dest, uint32_t metric) | |
4609 | { | |
841791b6 | 4610 | struct isis_extended_ip_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
4611 | |
4612 | r->metric = metric; | |
4613 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
4614 | apply_mask_ipv4(&r->prefix); | |
4615 | append_item(&tlvs->extended_ip_reach, (struct isis_item *)r); | |
4616 | } | |
4617 | ||
4618 | void isis_tlvs_add_ipv6_reach(struct isis_tlvs *tlvs, uint16_t mtid, | |
4619 | struct prefix_ipv6 *dest, uint32_t metric) | |
4620 | { | |
841791b6 | 4621 | struct isis_ipv6_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
4622 | |
4623 | r->metric = metric; | |
4624 | memcpy(&r->prefix, dest, sizeof(*dest)); | |
4625 | apply_mask_ipv6(&r->prefix); | |
4626 | ||
4627 | struct isis_item_list *l; | |
4628 | l = (mtid == ISIS_MT_IPV4_UNICAST) | |
4629 | ? &tlvs->ipv6_reach | |
4630 | : isis_get_mt_items(&tlvs->mt_ipv6_reach, mtid); | |
4631 | append_item(l, (struct isis_item *)r); | |
4632 | } | |
4633 | ||
d43d2df5 CF |
4634 | void isis_tlvs_add_ipv6_dstsrc_reach(struct isis_tlvs *tlvs, uint16_t mtid, |
4635 | struct prefix_ipv6 *dest, | |
4636 | struct prefix_ipv6 *src, | |
4637 | uint32_t metric) | |
4638 | { | |
4639 | isis_tlvs_add_ipv6_reach(tlvs, mtid, dest, metric); | |
4640 | struct isis_item_list *l = isis_get_mt_items(&tlvs->mt_ipv6_reach, | |
4641 | mtid); | |
4642 | ||
4643 | struct isis_ipv6_reach *r = (struct isis_ipv6_reach*)last_item(l); | |
bd507085 | 4644 | r->subtlvs = isis_alloc_subtlvs(ISIS_CONTEXT_SUBTLV_IPV6_REACH); |
d43d2df5 CF |
4645 | r->subtlvs->source_prefix = XCALLOC(MTYPE_ISIS_SUBTLV, sizeof(*src)); |
4646 | memcpy(r->subtlvs->source_prefix, src, sizeof(*src)); | |
4647 | } | |
4648 | ||
7ef5fefc CF |
4649 | void isis_tlvs_add_oldstyle_reach(struct isis_tlvs *tlvs, uint8_t *id, |
4650 | uint8_t metric) | |
4651 | { | |
841791b6 | 4652 | struct isis_oldstyle_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
4653 | |
4654 | r->metric = metric; | |
4655 | memcpy(r->id, id, sizeof(r->id)); | |
4656 | append_item(&tlvs->oldstyle_reach, (struct isis_item *)r); | |
4657 | } | |
4658 | ||
4659 | void isis_tlvs_add_extended_reach(struct isis_tlvs *tlvs, uint16_t mtid, | |
4660 | uint8_t *id, uint32_t metric, | |
1b3f47d0 | 4661 | struct isis_ext_subtlvs *exts) |
7ef5fefc | 4662 | { |
841791b6 | 4663 | struct isis_extended_reach *r = XCALLOC(MTYPE_ISIS_TLV, sizeof(*r)); |
7ef5fefc CF |
4664 | |
4665 | memcpy(r->id, id, sizeof(r->id)); | |
4666 | r->metric = metric; | |
1b3f47d0 OD |
4667 | if (exts) |
4668 | r->subtlvs = copy_item_ext_subtlvs(exts, mtid); | |
7ef5fefc CF |
4669 | |
4670 | struct isis_item_list *l; | |
4671 | if (mtid == ISIS_MT_IPV4_UNICAST) | |
4672 | l = &tlvs->extended_reach; | |
4673 | else | |
4674 | l = isis_get_mt_items(&tlvs->mt_reach, mtid); | |
4675 | append_item(l, (struct isis_item *)r); | |
4676 | } | |
4677 | ||
9fe21208 CF |
4678 | void isis_tlvs_add_threeway_adj(struct isis_tlvs *tlvs, |
4679 | enum isis_threeway_state state, | |
4680 | uint32_t local_circuit_id, | |
4681 | const uint8_t *neighbor_id, | |
4682 | uint32_t neighbor_circuit_id) | |
4683 | { | |
4684 | assert(!tlvs->threeway_adj); | |
4685 | ||
4686 | tlvs->threeway_adj = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->threeway_adj)); | |
4687 | tlvs->threeway_adj->state = state; | |
4688 | tlvs->threeway_adj->local_circuit_id = local_circuit_id; | |
4689 | ||
4690 | if (neighbor_id) { | |
4691 | tlvs->threeway_adj->neighbor_set = true; | |
4692 | memcpy(tlvs->threeway_adj->neighbor_id, neighbor_id, 6); | |
4693 | tlvs->threeway_adj->neighbor_circuit_id = neighbor_circuit_id; | |
4694 | } | |
4695 | } | |
4696 | ||
41a145f1 CF |
4697 | void isis_tlvs_add_spine_leaf(struct isis_tlvs *tlvs, uint8_t tier, |
4698 | bool has_tier, bool is_leaf, bool is_spine, | |
4699 | bool is_backup) | |
4700 | { | |
4701 | assert(!tlvs->spine_leaf); | |
4702 | ||
4703 | tlvs->spine_leaf = XCALLOC(MTYPE_ISIS_TLV, sizeof(*tlvs->spine_leaf)); | |
4704 | ||
4705 | if (has_tier) { | |
4706 | tlvs->spine_leaf->tier = tier; | |
4707 | } | |
4708 | ||
4709 | tlvs->spine_leaf->has_tier = has_tier; | |
4710 | tlvs->spine_leaf->is_leaf = is_leaf; | |
4711 | tlvs->spine_leaf->is_spine = is_spine; | |
4712 | tlvs->spine_leaf->is_backup = is_backup; | |
4713 | } | |
4714 | ||
7ef5fefc CF |
4715 | struct isis_mt_router_info * |
4716 | isis_tlvs_lookup_mt_router_info(struct isis_tlvs *tlvs, uint16_t mtid) | |
4717 | { | |
4718 | if (tlvs->mt_router_info_empty) | |
4719 | return NULL; | |
4720 | ||
4721 | struct isis_mt_router_info *rv; | |
4722 | for (rv = (struct isis_mt_router_info *)tlvs->mt_router_info.head; rv; | |
4723 | rv = rv->next) { | |
4724 | if (rv->mtid == mtid) | |
4725 | return rv; | |
4726 | } | |
4727 | ||
4728 | return NULL; | |
4729 | } | |
2c92bee4 CF |
4730 | |
4731 | void isis_tlvs_set_purge_originator(struct isis_tlvs *tlvs, | |
4732 | const uint8_t *generator, | |
4733 | const uint8_t *sender) | |
4734 | { | |
4735 | assert(!tlvs->purge_originator); | |
4736 | ||
4737 | tlvs->purge_originator = XCALLOC(MTYPE_ISIS_TLV, | |
4738 | sizeof(*tlvs->purge_originator)); | |
4739 | memcpy(tlvs->purge_originator->generator, generator, | |
4740 | sizeof(tlvs->purge_originator->generator)); | |
4741 | if (sender) { | |
4742 | tlvs->purge_originator->sender_set = true; | |
4743 | memcpy(tlvs->purge_originator->sender, sender, | |
4744 | sizeof(tlvs->purge_originator->sender)); | |
4745 | } | |
4746 | } |