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0b0cfcf2 | 1 | /* |
0b0cfcf2 | 2 | * DEBUG: section 80 WCCP Support |
47c151e0 | 3 | * AUTHOR: Steven Wilton |
0b0cfcf2 | 4 | * |
5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
6 | * ---------------------------------------------------------- | |
7 | * | |
8 | * Squid is the result of efforts by numerous individuals from | |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
26ac0430 | 21 | * |
0b0cfcf2 | 22 | * This program is distributed in the hope that it will be useful, |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26ac0430 | 26 | * |
0b0cfcf2 | 27 | * You should have received a copy of the GNU General Public License |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
30 | * | |
31 | */ | |
bf8fe701 | 32 | |
0b0cfcf2 | 33 | #include "squid.h" |
c898ced1 AJ |
34 | |
35 | #if USE_WCCPv2 | |
36 | ||
0b0cfcf2 | 37 | #include "comm.h" |
27bc2077 | 38 | #include "compat/strsep.h" |
a553a5a3 | 39 | #include "event.h" |
96d89ea0 | 40 | #include "ip/Address.h" |
0b0cfcf2 | 41 | #include "Parsing.h" |
a553a5a3 | 42 | #include "Store.h" |
bef81ea5 | 43 | #include "SwapDir.h" |
0b0cfcf2 | 44 | |
5fefeec1 | 45 | #if HAVE_NETDB_H |
0b0cfcf2 | 46 | #include <netdb.h> |
5fefeec1 | 47 | #endif |
0b0cfcf2 | 48 | |
49 | #define WCCP_PORT 2048 | |
0b0cfcf2 | 50 | #define WCCP_RESPONSE_SIZE 12448 |
0b0cfcf2 | 51 | #define WCCP_BUCKETS 256 |
52 | ||
0b0cfcf2 | 53 | static int theWccp2Connection = -1; |
54 | static int wccp2_connected = 0; | |
55 | ||
56 | static PF wccp2HandleUdp; | |
57 | static EVH wccp2HereIam; | |
58 | static EVH wccp2AssignBuckets; | |
59 | ||
60 | /* KDW WCCP V2 */ | |
c1f55201 | 61 | |
c898ced1 AJ |
62 | #define WCCP2_HASH_ASSIGNMENT 0x00 |
63 | #define WCCP2_MASK_ASSIGNMENT 0x01 | |
0b0cfcf2 | 64 | |
c898ced1 AJ |
65 | #define WCCP2_NONE_SECURITY_LEN 0 |
66 | #define WCCP2_MD5_SECURITY_LEN 16 | |
0b0cfcf2 | 67 | |
c898ced1 AJ |
68 | /* Useful defines */ |
69 | #define WCCP2_NUMPORTS 8 | |
70 | #define WCCP2_PASSWORD_LEN 8 | |
0b0cfcf2 | 71 | |
0b0cfcf2 | 72 | |
c898ced1 AJ |
73 | /* WCCPv2 Pakcet format structures */ |
74 | /* Defined in draft-wilson-wccp-v2-12-oct-2001.txt */ | |
0b0cfcf2 | 75 | |
0b0cfcf2 | 76 | |
c898ced1 AJ |
77 | /** \interface WCCPv2_Protocol |
78 | * Generic header struct | |
79 | */ | |
80 | struct wccp2_item_header_t { | |
81 | uint16_t type; | |
82 | uint16_t length; | |
83 | }; | |
0b0cfcf2 | 84 | |
c898ced1 AJ |
85 | /* item type values */ |
86 | #define WCCP2_SECURITY_INFO 0 | |
87 | #define WCCP2_SERVICE_INFO 1 | |
88 | #define WCCP2_ROUTER_ID_INFO 2 | |
89 | #define WCCP2_WC_ID_INFO 3 | |
90 | #define WCCP2_RTR_VIEW_INFO 4 | |
0b0cfcf2 | 91 | #define WCCP2_WC_VIEW_INFO 5 |
0b0cfcf2 | 92 | #define WCCP2_REDIRECT_ASSIGNMENT 6 |
0b0cfcf2 | 93 | #define WCCP2_QUERY_INFO 7 |
0b0cfcf2 | 94 | #define WCCP2_CAPABILITY_INFO 8 |
b7d249f9 | 95 | #define WCCP2_ALT_ASSIGNMENT 13 |
b7d249f9 | 96 | #define WCCP2_ASSIGN_MAP 14 |
b7d249f9 | 97 | #define WCCP2_COMMAND_EXTENSION 15 |
98 | ||
0b0cfcf2 | 99 | |
b7d249f9 | 100 | |
c898ced1 AJ |
101 | /** \interface WCCPv2_Protocol |
102 | * Sect 5.5 WCCP Message Header | |
103 | */ | |
104 | struct wccp2_message_header_t { | |
0b0cfcf2 | 105 | uint32_t type; |
106 | uint16_t version; | |
c898ced1 AJ |
107 | #define WCCP2_VERSION 0x200 |
108 | ||
0b0cfcf2 | 109 | uint16_t length; |
110 | }; | |
c898ced1 | 111 | static struct wccp2_message_header_t wccp2_here_i_am_header; |
0b0cfcf2 | 112 | |
c898ced1 AJ |
113 | /* message types */ |
114 | #define WCCP2_HERE_I_AM 10 | |
115 | #define WCCP2_I_SEE_YOU 11 | |
116 | #define WCCP2_REDIRECT_ASSIGN 12 | |
117 | #define WCCP2_REMOVAL_QUERY 13 | |
0b0cfcf2 | 118 | |
0b0cfcf2 | 119 | |
c898ced1 AJ |
120 | /** \interface WCCPv2_Protocol |
121 | * Sect 5.6.1 Security Info Component | |
122 | * | |
123 | * Basic security Header. Matches "no security" case exactly. | |
124 | */ | |
26ac0430 | 125 | struct wccp2_security_none_t { |
0b0cfcf2 | 126 | uint16_t security_type; |
127 | uint16_t security_length; | |
128 | uint32_t security_option; | |
129 | }; | |
130 | ||
c898ced1 AJ |
131 | /* security options */ |
132 | #define WCCP2_NO_SECURITY 0 | |
133 | #define WCCP2_MD5_SECURITY 1 | |
134 | ||
135 | ||
136 | /** \interface WCCPv2_Protocol | |
137 | * Sect 5.6.1 Security Info Component | |
138 | * | |
139 | * Extended security section. Matches "MD5 security" type exactly. | |
140 | * Including the security header. | |
141 | */ | |
26ac0430 | 142 | struct wccp2_security_md5_t { |
0b0cfcf2 | 143 | uint16_t security_type; |
144 | uint16_t security_length; | |
145 | uint32_t security_option; | |
146 | uint8_t security_implementation[WCCP2_MD5_SECURITY_LEN]; | |
147 | }; | |
148 | ||
149 | /* Service info struct */ | |
150 | ||
c898ced1 AJ |
151 | /** \interface WCCPv2_Protocol |
152 | * Sect 5.6.2 Service Info Component | |
153 | */ | |
26ac0430 | 154 | struct wccp2_service_info_t { |
0b0cfcf2 | 155 | uint16_t service_type; |
156 | uint16_t service_length; | |
157 | uint8_t service; | |
158 | uint8_t service_id; | |
159 | uint8_t service_priority; | |
160 | uint8_t service_protocol; | |
161 | uint32_t service_flags; | |
162 | uint16_t port0; | |
163 | uint16_t port1; | |
164 | uint16_t port2; | |
165 | uint16_t port3; | |
166 | uint16_t port4; | |
167 | uint16_t port5; | |
168 | uint16_t port6; | |
169 | uint16_t port7; | |
170 | }; | |
c898ced1 AJ |
171 | /* services */ |
172 | #define WCCP2_SERVICE_STANDARD 0 | |
173 | #define WCCP2_SERVICE_DYNAMIC 1 | |
0b0cfcf2 | 174 | |
c898ced1 AJ |
175 | /* service IDs */ |
176 | #define WCCP2_SERVICE_ID_HTTP 0x00 | |
177 | ||
178 | /* service flags */ | |
179 | #define WCCP2_SERVICE_SRC_IP_HASH 0x1 | |
180 | #define WCCP2_SERVICE_DST_IP_HASH 0x2 | |
181 | #define WCCP2_SERVICE_SRC_PORT_HASH 0x4 | |
182 | #define WCCP2_SERVICE_DST_PORT_HASH 0x8 | |
183 | #define WCCP2_SERVICE_PORTS_DEFINED 0x10 | |
184 | #define WCCP2_SERVICE_PORTS_SOURCE 0x20 | |
185 | #define WCCP2_SERVICE_SRC_IP_ALT_HASH 0x100 | |
186 | #define WCCP2_SERVICE_DST_IP_ALT_HASH 0x200 | |
187 | #define WCCP2_SERVICE_SRC_PORT_ALT_HASH 0x400 | |
188 | #define WCCP2_SERVICE_DST_PORT_ALT_HASH 0x800 | |
189 | ||
190 | ||
191 | /* TODO the following structures need to be re-defined for correct full operation. | |
192 | wccp2_cache_identity_element needs to be merged as a sub-struct of | |
193 | wccp2_identity_info_t (identity_type); which frees up the identifty info | |
194 | structures so mask_assigment_data_element can become variable length | |
195 | and cope with multiple fail-over caches hanging off one router. | |
196 | */ | |
197 | ||
198 | /** \interface WCCPv2_Protocol | |
199 | * Sect 5.7.2 Web-Cache Identity Element | |
200 | */ | |
26ac0430 | 201 | struct wccp2_cache_identity_info_t { |
cc192b50 | 202 | struct in_addr addr; |
0b0cfcf2 | 203 | uint16_t hash_revision; |
85442144 | 204 | uint16_t bits; |
c898ced1 AJ |
205 | //#define WCCP2_HASH_ASSIGNMENT_DATA 0x0 |
206 | ||
af6a12ee | 207 | /* 5.7.2 Hash Assignment Data Element */ |
c898ced1 | 208 | char buckets[32]; /* Draft indicates 8x 32-bit buckets but it's just a mask so doesn't matter how we define. */ |
0b0cfcf2 | 209 | uint16_t weight; |
210 | uint16_t status; | |
211 | }; | |
212 | ||
c898ced1 AJ |
213 | /** \interface WCCPv2_Protocol |
214 | * Sect 5.6.4 Web-Cache Identity Info Component | |
215 | */ | |
26ac0430 | 216 | struct wccp2_identity_info_t { |
0b0cfcf2 | 217 | uint16_t cache_identity_type; |
218 | uint16_t cache_identity_length; | |
219 | ||
220 | struct wccp2_cache_identity_info_t cache_identity; | |
221 | }; | |
222 | ||
223 | static struct wccp2_identity_info_t wccp2_identity_info; | |
224 | ||
c898ced1 AJ |
225 | /** \interface WCCPv2_Protocol |
226 | * Sect 5.7.7 Mask Element | |
227 | */ | |
228 | struct wccp2_mask_element_t { | |
b7d249f9 | 229 | uint32_t source_ip_mask; |
230 | uint32_t dest_ip_mask; | |
231 | uint16_t source_port_mask; | |
232 | uint16_t dest_port_mask; | |
c898ced1 | 233 | uint32_t number_values; |
b7d249f9 | 234 | }; |
235 | ||
b7d249f9 | 236 | |
c898ced1 AJ |
237 | /** \interface WCCPv2_Protocol |
238 | * Sect 5.7.2 Web-Cache Identity Element | |
239 | */ | |
240 | struct wccp2_cache_mask_identity_info_t { | |
241 | struct in_addr addr; | |
242 | uint16_t hash_revision; | |
243 | uint16_t bits; | |
85442144 | 244 | #define WCCP2_MASK_ASSIGNMENT_DATA (0x2) |
c898ced1 | 245 | |
af6a12ee AJ |
246 | /* Sect 5.7.2 Mask Assignment Data Element |
247 | * | |
248 | * NP: draft specifies a variable-length set of keys here. | |
249 | * the following fields only matche the special case Squid sends outbound (single-cache). | |
250 | */ | |
251 | uint32_t mask_element_count; | |
c898ced1 | 252 | |
af6a12ee AJ |
253 | /* Sect 5.7.6 Mask/Value Set Element */ |
254 | /* special case: single mask element. no values. */ | |
c898ced1 AJ |
255 | struct wccp2_mask_element_t mask; |
256 | ||
af6a12ee | 257 | /* Sect 5.7.2 Mask Assignment Data Element */ |
c898ced1 AJ |
258 | uint16_t weight; |
259 | uint16_t status; | |
260 | }; | |
261 | ||
262 | /** \interface WCCPv2_Protocol | |
263 | * Sect 5.6.4 Web-Cache Identity Info Component | |
264 | */ | |
26ac0430 | 265 | struct wccp2_mask_identity_info_t { |
b7d249f9 | 266 | uint16_t cache_identity_type; |
267 | uint16_t cache_identity_length; | |
268 | ||
269 | struct wccp2_cache_mask_identity_info_t cache_identity; | |
270 | }; | |
271 | ||
272 | static struct wccp2_mask_identity_info_t wccp2_mask_identity_info; | |
273 | ||
c898ced1 AJ |
274 | /** \interface WCCPv2_Protocol |
275 | * Sect 5.6.5 Router View Info Component | |
276 | * Sect 5.6.6 Web Cache View Info Component | |
277 | * | |
278 | * first three fields. (shared by both view components) | |
279 | */ | |
26ac0430 | 280 | struct wccp2_cache_view_header_t { |
0b0cfcf2 | 281 | uint16_t cache_view_type; |
282 | uint16_t cache_view_length; | |
283 | uint32_t cache_view_version; | |
284 | }; | |
285 | ||
286 | static struct wccp2_cache_view_header_t wccp2_cache_view_header; | |
287 | ||
e041b6d2 | 288 | /// \interface WCCPv2_Protocol |
c898ced1 | 289 | /* NP: special-case 5.6.5 or 5.6.6 * View Info when no routers or caches are advertised? */ |
26ac0430 | 290 | struct wccp2_cache_view_info_t { |
0b0cfcf2 | 291 | uint32_t num_routers; |
292 | uint32_t num_caches; | |
293 | }; | |
294 | ||
295 | static struct wccp2_cache_view_info_t wccp2_cache_view_info; | |
296 | ||
c898ced1 AJ |
297 | /** \interface WCCPv2_Protocol |
298 | * Sect 5.7.1 Router ID Element | |
299 | */ | |
26ac0430 | 300 | struct wccp2_router_id_element_t { |
cc192b50 | 301 | struct in_addr router_address; |
0b0cfcf2 | 302 | uint32_t received_id; |
303 | }; | |
304 | ||
305 | static struct wccp2_router_id_element_t wccp2_router_id_element; | |
306 | ||
bd8d3feb | 307 | /** \interface WCCPv2_Protocol |
c898ced1 AJ |
308 | * Sect 5.6.9 Capabilities Info Component |
309 | */ | |
26ac0430 | 310 | struct wccp2_capability_info_header_t { |
0b0cfcf2 | 311 | uint16_t capability_info_type; |
312 | uint16_t capability_info_length; | |
c898ced1 | 313 | /* dynamic length capabilities list */ |
0b0cfcf2 | 314 | }; |
315 | ||
316 | static struct wccp2_capability_info_header_t wccp2_capability_info_header; | |
317 | ||
c898ced1 AJ |
318 | /** \interface WCCPv2_Protocol |
319 | * 5.7.5 Capability Element | |
320 | */ | |
26ac0430 | 321 | struct wccp2_capability_element_t { |
0b0cfcf2 | 322 | uint16_t capability_type; |
323 | uint16_t capability_length; | |
324 | uint32_t capability_value; | |
325 | }; | |
0b0cfcf2 | 326 | static struct wccp2_capability_element_t wccp2_capability_element; |
327 | ||
c898ced1 AJ |
328 | /* capability types */ |
329 | #define WCCP2_CAPABILITY_FORWARDING_METHOD 0x01 | |
330 | #define WCCP2_CAPABILITY_ASSIGNMENT_METHOD 0x02 | |
331 | #define WCCP2_CAPABILITY_RETURN_METHOD 0x03 | |
b7d249f9 | 332 | |
c898ced1 AJ |
333 | /* capability values */ |
334 | #define WCCP2_METHOD_GRE 0x00000001 | |
335 | #define WCCP2_METHOD_L2 0x00000002 | |
af6a12ee | 336 | /* when type=WCCP2_CAPABILITY_FORWARDING_METHOD */ |
c898ced1 AJ |
337 | #define WCCP2_FORWARDING_METHOD_GRE WCCP2_METHOD_GRE |
338 | #define WCCP2_FORWARDING_METHOD_L2 WCCP2_METHOD_L2 | |
af6a12ee | 339 | /* when type=WCCP2_CAPABILITY_ASSIGNMENT_METHOD */ |
c898ced1 AJ |
340 | #define WCCP2_ASSIGNMENT_METHOD_HASH 0x00000001 |
341 | #define WCCP2_ASSIGNMENT_METHOD_MASK 0x00000002 | |
af6a12ee | 342 | /* when type=WCCP2_CAPABILITY_RETURN_METHOD */ |
c898ced1 AJ |
343 | #define WCCP2_PACKET_RETURN_METHOD_GRE WCCP2_METHOD_GRE |
344 | #define WCCP2_PACKET_RETURN_METHOD_L2 WCCP2_METHOD_L2 | |
b7d249f9 | 345 | |
b7d249f9 | 346 | |
c898ced1 AJ |
347 | |
348 | /** \interface WCCPv2_Protocol | |
349 | * 5.7.8 Value Element | |
350 | */ | |
26ac0430 | 351 | struct wccp2_value_element_t { |
b7d249f9 | 352 | uint32_t source_ip_value; |
353 | uint32_t dest_ip_value; | |
354 | uint16_t source_port_value; | |
355 | uint16_t dest_port_value; | |
356 | ||
cc192b50 | 357 | struct in_addr cache_ip; |
b7d249f9 | 358 | }; |
0b0cfcf2 | 359 | |
360 | /* RECEIVED PACKET STRUCTURE */ | |
361 | ||
c898ced1 AJ |
362 | /** \interface WCCPv2_Protocol |
363 | * 5.2 'I See You' Message | |
364 | */ | |
26ac0430 | 365 | struct wccp2_i_see_you_t { |
0b0cfcf2 | 366 | uint32_t type; |
367 | uint16_t version; | |
368 | uint16_t length; | |
369 | char data[WCCP_RESPONSE_SIZE]; | |
370 | }; | |
371 | ||
372 | static struct wccp2_i_see_you_t wccp2_i_see_you; | |
373 | ||
c898ced1 AJ |
374 | /** \interface WCCPv2_Protocol |
375 | * 5.7.4 Router Assignment Element | |
376 | */ | |
26ac0430 | 377 | struct wccp2_router_assign_element_t { |
cc192b50 | 378 | struct in_addr router_address; |
0b0cfcf2 | 379 | uint32_t received_id; |
380 | uint32_t change_number; | |
381 | }; | |
382 | ||
0b0cfcf2 | 383 | /* Router identity struct */ |
384 | ||
c898ced1 AJ |
385 | /** \interface WCCPv2_Protocol |
386 | * 5.6.3 Router Identity Info Component (partial) | |
387 | */ | |
26ac0430 | 388 | struct router_identity_info_t { |
0b0cfcf2 | 389 | |
390 | struct wccp2_item_header_t header; | |
391 | ||
392 | struct wccp2_router_id_element_t router_id_element; | |
393 | ||
2adffc6f | 394 | struct in_addr router_address; |
0b0cfcf2 | 395 | uint32_t number_caches; |
c898ced1 | 396 | /* dynamic list of cache IP addresses */ |
0b0cfcf2 | 397 | }; |
398 | ||
b7d249f9 | 399 | /* The received packet for a mask assignment is unusual */ |
400 | ||
c898ced1 AJ |
401 | /** \interface WCCPv2_Protocol |
402 | * Sect 5.7.7 Mask Element ??? | |
403 | * see code below. apparently the supposed IP address at position num1 can be equal to 3. | |
404 | */ | |
26ac0430 | 405 | struct cache_mask_info_t { |
cc192b50 | 406 | struct in_addr addr; |
b7d249f9 | 407 | uint32_t num1; |
408 | uint32_t num2; | |
409 | uint32_t num3; | |
410 | }; | |
411 | ||
c898ced1 AJ |
412 | /** \interface WCCPv2_Protocol |
413 | * 5.7.3 Assignment Key Element | |
414 | */ | |
26ac0430 | 415 | struct assignment_key_t { |
cc192b50 | 416 | struct in_addr master_ip; |
0b0cfcf2 | 417 | uint32_t master_number; |
418 | }; | |
419 | ||
c898ced1 AJ |
420 | /** \interface WCCPv2_Protocol |
421 | * 5.6.5 Router View Info Component (first three fields) | |
422 | */ | |
26ac0430 | 423 | struct router_view_t { |
0b0cfcf2 | 424 | struct wccp2_item_header_t header; |
425 | uint32_t change_number; | |
0b0cfcf2 | 426 | struct assignment_key_t assignment_key; |
c898ced1 | 427 | /* dynamic lists of routers and caches elided */ |
0b0cfcf2 | 428 | }; |
429 | ||
0b0cfcf2 | 430 | /* Lists used to keep track of caches, routers and services */ |
431 | ||
e041b6d2 | 432 | /// \interface WCCPv2_Protocol |
26ac0430 | 433 | struct wccp2_cache_list_t { |
0b0cfcf2 | 434 | |
cc192b50 | 435 | struct in_addr cache_ip; |
0b0cfcf2 | 436 | |
f16fbc82 | 437 | int weight; |
438 | ||
0b0cfcf2 | 439 | struct wccp2_cache_list_t *next; |
440 | }; | |
441 | ||
e041b6d2 | 442 | /// \interface WCCPv2_Protocol |
26ac0430 | 443 | struct wccp2_router_list_t { |
0b0cfcf2 | 444 | |
445 | struct wccp2_router_id_element_t *info; | |
446 | ||
cc192b50 | 447 | struct in_addr local_ip; |
0b0cfcf2 | 448 | |
cc192b50 | 449 | struct in_addr router_sendto_address; |
0b0cfcf2 | 450 | uint32_t member_change; |
451 | uint32_t num_caches; | |
452 | ||
453 | struct wccp2_cache_list_t cache_list_head; | |
454 | ||
455 | struct wccp2_router_list_t *next; | |
456 | }; | |
457 | ||
458 | static int wccp2_numrouters; | |
459 | ||
e041b6d2 | 460 | /// \interface WCCPv2_Protocol |
26ac0430 | 461 | struct wccp2_service_list_t { |
0b0cfcf2 | 462 | |
463 | struct wccp2_service_info_t info; | |
464 | uint32_t num_routers; | |
465 | ||
466 | struct wccp2_router_list_t router_list_head; | |
467 | int lowest_ip; | |
468 | uint32_t change_num; | |
469 | ||
b7d249f9 | 470 | char *wccp2_identity_info_ptr; |
0b0cfcf2 | 471 | |
472 | struct wccp2_security_md5_t *security_info; | |
473 | ||
474 | struct wccp2_service_info_t *service_info; | |
475 | char wccp_packet[WCCP_RESPONSE_SIZE]; | |
476 | size_t wccp_packet_size; | |
477 | ||
478 | struct wccp2_service_list_t *next; | |
479 | char wccp_password[WCCP2_PASSWORD_LEN + 1]; /* hold the trailing C-string NUL */ | |
480 | uint32_t wccp2_security_type; | |
481 | }; | |
482 | ||
483 | static struct wccp2_service_list_t *wccp2_service_list_head = NULL; | |
484 | ||
26ac0430 | 485 | int empty_portlist[WCCP2_NUMPORTS] = {0, 0, 0, 0, 0, 0, 0, 0}; |
0b0cfcf2 | 486 | |
c898ced1 AJ |
487 | /* END WCCP V2 PROTOCL TYPES DEFINITION */ |
488 | ||
0b0cfcf2 | 489 | void wccp2_add_service_list(int service, int service_id, int service_priority, |
490 | int service_proto, int service_flags, int ports[], int security_type, char *password); | |
264096e2 | 491 | static void wccp2SortCacheList(struct wccp2_cache_list_t *head); |
0b0cfcf2 | 492 | |
493 | /* | |
494 | * The functions used during startup: | |
495 | * wccp2Init | |
496 | * wccp2ConnectionOpen | |
497 | * wccp2ConnectionClose | |
498 | */ | |
499 | ||
500 | static void | |
501 | wccp2InitServices(void) | |
502 | { | |
bf8fe701 | 503 | debugs(80, 5, "wccp2InitServices: called"); |
0b0cfcf2 | 504 | } |
505 | ||
506 | static void | |
0b0cfcf2 | 507 | wccp2_update_service(struct wccp2_service_list_t *srv, int service, |
508 | int service_id, int service_priority, int service_proto, int service_flags, | |
509 | int ports[]) | |
510 | { | |
511 | /* XXX check what needs to be wrapped in htons()! */ | |
512 | srv->info.service = service; | |
513 | srv->info.service_id = service_id; | |
514 | srv->info.service_priority = service_priority; | |
515 | srv->info.service_protocol = service_proto; | |
516 | srv->info.service_flags = htonl(service_flags); | |
517 | srv->info.port0 = htons(ports[0]); | |
518 | srv->info.port1 = htons(ports[1]); | |
519 | srv->info.port2 = htons(ports[2]); | |
520 | srv->info.port3 = htons(ports[3]); | |
521 | srv->info.port4 = htons(ports[4]); | |
522 | srv->info.port5 = htons(ports[5]); | |
523 | srv->info.port6 = htons(ports[6]); | |
524 | srv->info.port7 = htons(ports[7]); | |
525 | } | |
526 | ||
527 | void | |
528 | wccp2_add_service_list(int service, int service_id, int service_priority, | |
529 | int service_proto, int service_flags, int ports[], int security_type, | |
530 | char *password) | |
531 | { | |
532 | ||
533 | struct wccp2_service_list_t *wccp2_service_list_ptr; | |
534 | ||
535 | wccp2_service_list_ptr = (wccp2_service_list_t *) xcalloc(1, sizeof(struct wccp2_service_list_t)); | |
536 | ||
bf8fe701 | 537 | debugs(80, 5, "wccp2_add_service_list: added service id " << service_id); |
0b0cfcf2 | 538 | |
539 | /* XXX check what needs to be wrapped in htons()! */ | |
540 | wccp2_service_list_ptr->info.service_type = htons(WCCP2_SERVICE_INFO); | |
541 | ||
542 | wccp2_service_list_ptr->info.service_length = htons(sizeof(struct wccp2_service_info_t) - 4); | |
543 | wccp2_service_list_ptr->change_num = 0; | |
544 | wccp2_update_service(wccp2_service_list_ptr, service, service_id, | |
545 | service_priority, service_proto, service_flags, ports); | |
546 | wccp2_service_list_ptr->wccp2_security_type = security_type; | |
a302ad3c | 547 | memset(wccp2_service_list_ptr->wccp_password, 0, WCCP2_PASSWORD_LEN + 1); |
0b0cfcf2 | 548 | strncpy(wccp2_service_list_ptr->wccp_password, password, WCCP2_PASSWORD_LEN); |
549 | /* add to linked list - XXX this should use the Squid dlink* routines! */ | |
550 | wccp2_service_list_ptr->next = wccp2_service_list_head; | |
551 | wccp2_service_list_head = wccp2_service_list_ptr; | |
552 | } | |
553 | ||
554 | static struct wccp2_service_list_t * | |
e1381638 | 555 | wccp2_get_service_by_id(int service, int service_id) { |
0b0cfcf2 | 556 | |
557 | struct wccp2_service_list_t *p; | |
558 | ||
559 | p = wccp2_service_list_head; | |
560 | ||
26ac0430 | 561 | while (p != NULL) { |
0b0cfcf2 | 562 | if (p->info.service == service && p->info.service_id == service_id) { |
563 | return p; | |
564 | } | |
565 | ||
566 | p = p->next; | |
567 | } | |
568 | ||
569 | return NULL; | |
570 | } | |
571 | ||
572 | /* | |
573 | * Update the md5 security header, if possible | |
574 | * | |
575 | * Returns: 1 if we set it, 0 if not (eg, no security section, or non-md5) | |
576 | */ | |
577 | static char | |
578 | wccp2_update_md5_security(char *password, char *ptr, char *packet, int len) | |
579 | { | |
580 | u_int8_t md5_digest[16]; | |
581 | char pwd[WCCP2_PASSWORD_LEN]; | |
c3031d67 | 582 | SquidMD5_CTX M; |
0b0cfcf2 | 583 | |
584 | struct wccp2_security_md5_t *ws; | |
585 | ||
bf8fe701 | 586 | debugs(80, 5, "wccp2_update_md5_security: called"); |
0b0cfcf2 | 587 | |
588 | /* The password field, for the MD5 hash, needs to be 8 bytes and NUL padded. */ | |
a302ad3c | 589 | memset(pwd, 0, sizeof(pwd)); |
0b0cfcf2 | 590 | strncpy(pwd, password, sizeof(pwd)); |
591 | ||
592 | ws = (struct wccp2_security_md5_t *) ptr; | |
593 | assert(ntohs(ws->security_type) == WCCP2_SECURITY_INFO); | |
594 | /* Its the security part */ | |
595 | ||
596 | if (ntohl(ws->security_option) != WCCP2_MD5_SECURITY) { | |
bf8fe701 | 597 | debugs(80, 5, "wccp2_update_md5_security: this service ain't md5'ing, abort"); |
0b0cfcf2 | 598 | return 0; |
599 | } | |
600 | ||
601 | /* And now its the MD5 section! */ | |
602 | /* According to the draft, the MD5 security hash is the combination of | |
603 | * the 8-octet password (padded w/ NUL bytes) and the entire WCCP packet, | |
604 | * including the WCCP message header. The WCCP security implementation | |
605 | * area should be zero'ed before calculating the MD5 hash. | |
606 | */ | |
607 | /* XXX eventually we should be able to kill md5_digest and blit it directly in */ | |
a302ad3c | 608 | memset(ws->security_implementation, 0, sizeof(ws->security_implementation)); |
0b0cfcf2 | 609 | |
c3031d67 | 610 | SquidMD5Init(&M); |
0b0cfcf2 | 611 | |
c3031d67 | 612 | SquidMD5Update(&M, pwd, 8); |
0b0cfcf2 | 613 | |
c3031d67 | 614 | SquidMD5Update(&M, packet, len); |
0b0cfcf2 | 615 | |
c3031d67 | 616 | SquidMD5Final(md5_digest, &M); |
0b0cfcf2 | 617 | |
618 | memcpy(ws->security_implementation, md5_digest, sizeof(md5_digest)); | |
619 | ||
620 | /* Finished! */ | |
621 | return 1; | |
622 | } | |
623 | ||
624 | ||
625 | /* | |
626 | * Check the given WCCP2 packet against the given password. | |
627 | */ | |
628 | static char | |
629 | ||
630 | wccp2_check_security(struct wccp2_service_list_t *srv, char *security, char *packet, int len) | |
631 | { | |
632 | ||
633 | struct wccp2_security_md5_t *ws = (struct wccp2_security_md5_t *) security; | |
634 | u_int8_t md5_digest[16], md5_challenge[16]; | |
635 | char pwd[WCCP2_PASSWORD_LEN]; | |
c3031d67 | 636 | SquidMD5_CTX M; |
0b0cfcf2 | 637 | |
638 | /* Make sure the security type matches what we expect */ | |
639 | ||
26ac0430 | 640 | if (ntohl(ws->security_option) != srv->wccp2_security_type) { |
bf8fe701 | 641 | debugs(80, 1, "wccp2_check_security: received packet has the wrong security option"); |
0b0cfcf2 | 642 | return 0; |
643 | } | |
644 | ||
26ac0430 | 645 | if (srv->wccp2_security_type == WCCP2_NO_SECURITY) { |
0b0cfcf2 | 646 | return 1; |
647 | } | |
648 | ||
26ac0430 | 649 | if (srv->wccp2_security_type != WCCP2_MD5_SECURITY) { |
bf8fe701 | 650 | debugs(80, 1, "wccp2_check_security: invalid security option"); |
0b0cfcf2 | 651 | return 0; |
652 | } | |
653 | ||
654 | /* If execution makes it here then we have an MD5 security */ | |
655 | ||
656 | /* The password field, for the MD5 hash, needs to be 8 bytes and NUL padded. */ | |
a302ad3c | 657 | memset(pwd, 0, sizeof(pwd)); |
0b0cfcf2 | 658 | |
659 | strncpy(pwd, srv->wccp_password, sizeof(pwd)); | |
660 | ||
661 | /* Take a copy of the challenge: we need to NUL it before comparing */ | |
662 | memcpy(md5_challenge, ws->security_implementation, 16); | |
663 | ||
a302ad3c | 664 | memset(ws->security_implementation, 0, sizeof(ws->security_implementation)); |
0b0cfcf2 | 665 | |
c3031d67 | 666 | SquidMD5Init(&M); |
0b0cfcf2 | 667 | |
c3031d67 | 668 | SquidMD5Update(&M, pwd, 8); |
0b0cfcf2 | 669 | |
c3031d67 | 670 | SquidMD5Update(&M, packet, len); |
0b0cfcf2 | 671 | |
c3031d67 | 672 | SquidMD5Final(md5_digest, &M); |
0b0cfcf2 | 673 | |
674 | return (memcmp(md5_digest, md5_challenge, 16) == 0); | |
675 | } | |
676 | ||
677 | ||
678 | void | |
679 | wccp2Init(void) | |
680 | { | |
b7ac5457 | 681 | Ip::Address_list *s; |
0b0cfcf2 | 682 | char *ptr; |
b7d249f9 | 683 | uint32_t service_flags; |
0b0cfcf2 | 684 | |
685 | struct wccp2_service_list_t *service_list_ptr; | |
686 | ||
687 | struct wccp2_router_list_t *router_list_ptr; | |
688 | ||
689 | struct wccp2_security_md5_t wccp2_security_md5; | |
690 | ||
bf8fe701 | 691 | debugs(80, 5, "wccp2Init: Called"); |
0b0cfcf2 | 692 | |
693 | if (wccp2_connected == 1) | |
694 | return; | |
695 | ||
696 | wccp2_numrouters = 0; | |
697 | ||
698 | /* Calculate the number of routers configured in the config file */ | |
699 | for (s = Config.Wccp2.router; s; s = s->next) { | |
cc192b50 | 700 | if (!s->s.IsAnyAddr()) { |
0b0cfcf2 | 701 | /* Increment the counter */ |
702 | wccp2_numrouters++; | |
703 | } | |
704 | } | |
705 | ||
706 | if (wccp2_numrouters == 0) { | |
707 | return; | |
708 | } | |
709 | ||
710 | /* Initialise the list of services */ | |
711 | wccp2InitServices(); | |
712 | ||
713 | service_list_ptr = wccp2_service_list_head; | |
714 | ||
715 | while (service_list_ptr != NULL) { | |
716 | /* Set up our list pointers */ | |
717 | router_list_ptr = &service_list_ptr->router_list_head; | |
718 | ||
719 | /* start the wccp header */ | |
720 | wccp2_here_i_am_header.type = htonl(WCCP2_HERE_I_AM); | |
721 | wccp2_here_i_am_header.version = htons(WCCP2_VERSION); | |
722 | wccp2_here_i_am_header.length = 0; | |
723 | ptr = service_list_ptr->wccp_packet + sizeof(wccp2_here_i_am_header); | |
724 | ||
725 | /* add the security section */ | |
726 | /* XXX this is ugly */ | |
727 | ||
728 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
729 | wccp2_security_md5.security_option = htonl(WCCP2_MD5_SECURITY); | |
730 | ||
731 | wccp2_security_md5.security_length = htons(sizeof(struct wccp2_security_md5_t) - 4); | |
732 | } else if (service_list_ptr->wccp2_security_type == WCCP2_NO_SECURITY) { | |
733 | wccp2_security_md5.security_option = htonl(WCCP2_NO_SECURITY); | |
734 | /* XXX I hate magic length numbers! */ | |
735 | wccp2_security_md5.security_length = htons(4); | |
736 | } else { | |
737 | fatalf("Bad WCCP2 security type\n"); | |
738 | } | |
739 | ||
740 | wccp2_here_i_am_header.length += ntohs(wccp2_security_md5.security_length) + 4; | |
741 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
742 | wccp2_security_md5.security_type = htons(WCCP2_SECURITY_INFO); | |
743 | ||
744 | service_list_ptr->security_info = (struct wccp2_security_md5_t *) ptr; | |
745 | ||
746 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
747 | ||
748 | xmemcpy(ptr, &wccp2_security_md5, sizeof(struct wccp2_security_md5_t)); | |
749 | ||
750 | ptr += sizeof(struct wccp2_security_md5_t); | |
751 | } else { | |
752 | /* assume NONE, and XXX I hate magic length numbers */ | |
753 | xmemcpy(ptr, &wccp2_security_md5, 8); | |
754 | ptr += 8; | |
755 | } | |
756 | ||
757 | /* Add the service info section */ | |
758 | ||
759 | wccp2_here_i_am_header.length += sizeof(struct wccp2_service_info_t); | |
760 | ||
761 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
762 | ||
763 | xmemcpy(ptr, &service_list_ptr->info, sizeof(struct wccp2_service_info_t)); | |
764 | ||
765 | service_list_ptr->service_info = (struct wccp2_service_info_t *) ptr; | |
766 | ||
767 | ptr += sizeof(struct wccp2_service_info_t); | |
768 | ||
769 | /* Add the cache identity section */ | |
770 | ||
b7d249f9 | 771 | switch (Config.Wccp2.assignment_method) { |
0b0cfcf2 | 772 | |
b7d249f9 | 773 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
0b0cfcf2 | 774 | |
b7d249f9 | 775 | wccp2_here_i_am_header.length += sizeof(struct wccp2_identity_info_t); |
776 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
777 | wccp2_identity_info.cache_identity_type = htons(WCCP2_WC_ID_INFO); | |
778 | wccp2_identity_info.cache_identity_length = htons(sizeof(wccp2_identity_info.cache_identity)); | |
cc192b50 | 779 | memset(&wccp2_identity_info.cache_identity.addr, '\0', sizeof(struct in_addr)); |
b7d249f9 | 780 | memset(&wccp2_identity_info.cache_identity.hash_revision, '\0', sizeof(wccp2_identity_info.cache_identity.hash_revision)); |
781 | memset(&wccp2_identity_info.cache_identity.bits, '\0', sizeof(wccp2_identity_info.cache_identity.bits)); | |
782 | memset(&wccp2_identity_info.cache_identity.buckets, '\0', sizeof(wccp2_identity_info.cache_identity.buckets)); | |
783 | wccp2_identity_info.cache_identity.weight = htons(Config.Wccp2.weight); | |
784 | memset(&wccp2_identity_info.cache_identity.status, '\0', sizeof(wccp2_identity_info.cache_identity.status)); | |
0b0cfcf2 | 785 | |
b7d249f9 | 786 | xmemcpy(ptr, &wccp2_identity_info, sizeof(struct wccp2_identity_info_t)); |
787 | service_list_ptr->wccp2_identity_info_ptr = ptr; | |
0b0cfcf2 | 788 | |
b7d249f9 | 789 | ptr += sizeof(struct wccp2_identity_info_t); |
790 | break; | |
0b0cfcf2 | 791 | |
b7d249f9 | 792 | case WCCP2_ASSIGNMENT_METHOD_MASK: |
793 | ||
794 | wccp2_here_i_am_header.length += sizeof(struct wccp2_mask_identity_info_t); | |
795 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
796 | wccp2_mask_identity_info.cache_identity_type = htons(WCCP2_WC_ID_INFO); | |
797 | wccp2_mask_identity_info.cache_identity_length = htons(sizeof(wccp2_mask_identity_info.cache_identity)); | |
cc192b50 | 798 | memset(&wccp2_mask_identity_info.cache_identity.addr, '\0', sizeof(struct in_addr)); |
85442144 | 799 | wccp2_mask_identity_info.cache_identity.bits = htons(WCCP2_MASK_ASSIGNMENT_DATA); |
c898ced1 | 800 | wccp2_mask_identity_info.cache_identity.mask_element_count = htonl(1); |
b7d249f9 | 801 | service_flags = ntohl(service_list_ptr->service_info->service_flags); |
802 | ||
c898ced1 AJ |
803 | memset(&wccp2_mask_identity_info.cache_identity.mask, 0, sizeof(struct wccp2_mask_element_t)); |
804 | ||
b7d249f9 | 805 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { |
c898ced1 | 806 | wccp2_mask_identity_info.cache_identity.mask.source_ip_mask = htonl(0x00001741); |
b7d249f9 | 807 | } else if ((service_list_ptr->info.service == WCCP2_SERVICE_STANDARD) || (service_flags & WCCP2_SERVICE_DST_IP_HASH) || (service_flags & WCCP2_SERVICE_DST_IP_ALT_HASH)) { |
c898ced1 | 808 | wccp2_mask_identity_info.cache_identity.mask.dest_ip_mask = htonl(0x00001741); |
b7d249f9 | 809 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { |
c898ced1 | 810 | wccp2_mask_identity_info.cache_identity.mask.source_port_mask = htons(0x1741); |
b7d249f9 | 811 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { |
c898ced1 | 812 | wccp2_mask_identity_info.cache_identity.mask.dest_port_mask = htons(0x1741); |
b7d249f9 | 813 | } else { |
814 | fatalf("Unknown service hash method\n"); | |
815 | } | |
0b0cfcf2 | 816 | |
c898ced1 AJ |
817 | wccp2_mask_identity_info.cache_identity.weight = 0; |
818 | wccp2_mask_identity_info.cache_identity.status = 0; | |
0b0cfcf2 | 819 | |
b7d249f9 | 820 | xmemcpy(ptr, &wccp2_mask_identity_info, sizeof(struct wccp2_mask_identity_info_t)); |
821 | service_list_ptr->wccp2_identity_info_ptr = ptr; | |
0b0cfcf2 | 822 | |
b7d249f9 | 823 | ptr += sizeof(struct wccp2_mask_identity_info_t); |
824 | break; | |
0b0cfcf2 | 825 | |
b7d249f9 | 826 | default: |
827 | fatalf("Unknown Wccp2 assignment method\n"); | |
828 | } | |
0b0cfcf2 | 829 | |
830 | /* Add the cache view section */ | |
831 | wccp2_here_i_am_header.length += sizeof(wccp2_cache_view_header); | |
832 | ||
833 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
834 | ||
835 | wccp2_cache_view_header.cache_view_type = htons(WCCP2_WC_VIEW_INFO); | |
836 | ||
837 | wccp2_cache_view_header.cache_view_length = htons(sizeof(wccp2_cache_view_header) - 4 + | |
838 | sizeof(wccp2_cache_view_info) + (wccp2_numrouters * sizeof(wccp2_router_id_element))); | |
839 | ||
840 | wccp2_cache_view_header.cache_view_version = htonl(1); | |
841 | ||
842 | xmemcpy(ptr, &wccp2_cache_view_header, sizeof(wccp2_cache_view_header)); | |
843 | ||
844 | ptr += sizeof(wccp2_cache_view_header); | |
845 | ||
846 | /* Add the number of routers to the packet */ | |
847 | wccp2_here_i_am_header.length += sizeof(service_list_ptr->num_routers); | |
848 | ||
849 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
850 | ||
851 | service_list_ptr->num_routers = htonl(wccp2_numrouters); | |
852 | ||
853 | xmemcpy(ptr, &service_list_ptr->num_routers, sizeof(service_list_ptr->num_routers)); | |
854 | ||
855 | ptr += sizeof(service_list_ptr->num_routers); | |
856 | ||
857 | /* Add each router. Keep this functionality here to make sure the received_id can be updated in the packet */ | |
858 | for (s = Config.Wccp2.router; s; s = s->next) { | |
cc192b50 | 859 | if (!s->s.IsAnyAddr()) { |
0b0cfcf2 | 860 | |
861 | wccp2_here_i_am_header.length += sizeof(struct wccp2_router_id_element_t); | |
862 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
863 | ||
864 | /* Add a pointer to the router list for this router */ | |
865 | ||
866 | router_list_ptr->info = (struct wccp2_router_id_element_t *) ptr; | |
cc192b50 | 867 | s->s.GetInAddr(router_list_ptr->info->router_address); |
0b0cfcf2 | 868 | router_list_ptr->info->received_id = htonl(0); |
cc192b50 | 869 | s->s.GetInAddr(router_list_ptr->router_sendto_address); |
0b0cfcf2 | 870 | router_list_ptr->member_change = htonl(0); |
871 | ||
872 | /* Build the next struct */ | |
873 | ||
874 | router_list_ptr->next = (wccp2_router_list_t*) xcalloc(1, sizeof(struct wccp2_router_list_t)); | |
875 | ||
876 | /* update the pointer */ | |
877 | router_list_ptr = router_list_ptr->next; | |
878 | router_list_ptr->next = NULL; | |
879 | ||
880 | /* no need to copy memory - we've just set the values directly in the packet above */ | |
881 | ||
882 | ptr += sizeof(struct wccp2_router_id_element_t); | |
883 | } | |
884 | } | |
885 | ||
886 | /* Add the number of caches (0) */ | |
887 | wccp2_here_i_am_header.length += sizeof(wccp2_cache_view_info.num_caches); | |
888 | ||
889 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
890 | ||
891 | wccp2_cache_view_info.num_caches = htonl(0); | |
892 | ||
893 | xmemcpy(ptr, &wccp2_cache_view_info.num_caches, sizeof(wccp2_cache_view_info.num_caches)); | |
894 | ||
895 | ptr += sizeof(wccp2_cache_view_info.num_caches); | |
896 | ||
897 | /* Add the extra capability header */ | |
898 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_info_header); | |
899 | ||
900 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
901 | ||
902 | wccp2_capability_info_header.capability_info_type = htons(WCCP2_CAPABILITY_INFO); | |
903 | ||
c1f55201 | 904 | wccp2_capability_info_header.capability_info_length = htons(3 * sizeof(wccp2_capability_element)); |
0b0cfcf2 | 905 | |
906 | xmemcpy(ptr, &wccp2_capability_info_header, sizeof(wccp2_capability_info_header)); | |
907 | ||
908 | ptr += sizeof(wccp2_capability_info_header); | |
909 | ||
910 | /* Add the forwarding method */ | |
911 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
912 | ||
913 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
914 | ||
915 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_FORWARDING_METHOD); | |
916 | ||
917 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
918 | ||
919 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.forwarding_method); | |
920 | ||
921 | xmemcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); | |
922 | ||
923 | ptr += sizeof(wccp2_capability_element); | |
924 | ||
c1f55201 | 925 | /* Add the assignment method */ |
926 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
927 | ||
928 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
929 | ||
930 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_ASSIGNMENT_METHOD); | |
931 | ||
932 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
933 | ||
b7d249f9 | 934 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.assignment_method); |
c1f55201 | 935 | |
936 | xmemcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); | |
937 | ||
938 | ptr += sizeof(wccp2_capability_element); | |
939 | ||
0b0cfcf2 | 940 | /* Add the return method */ |
941 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
942 | ||
943 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
944 | ||
945 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_RETURN_METHOD); | |
946 | ||
947 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
948 | ||
949 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.return_method); | |
950 | ||
951 | xmemcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); | |
952 | ||
953 | ptr += sizeof(wccp2_capability_element); | |
954 | ||
955 | /* Finally, fix the total length to network order, and copy to the appropriate memory blob */ | |
956 | wccp2_here_i_am_header.length = htons(wccp2_here_i_am_header.length); | |
957 | ||
958 | memcpy(&service_list_ptr->wccp_packet, &wccp2_here_i_am_header, sizeof(wccp2_here_i_am_header)); | |
959 | ||
960 | service_list_ptr->wccp_packet_size = ntohs(wccp2_here_i_am_header.length) + sizeof(wccp2_here_i_am_header); | |
961 | ||
962 | /* Add the event if everything initialised correctly */ | |
51676485 | 963 | debugs(80,3,"wccp2Init: scheduled 'HERE_I_AM' message to " << wccp2_numrouters << "routers."); |
0b0cfcf2 | 964 | if (wccp2_numrouters) { |
965 | if (!eventFind(wccp2HereIam, NULL)) { | |
966 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 1, 1); | |
af6a12ee | 967 | } else |
51676485 | 968 | debugs(80,3,"wccp2Init: skip duplicate 'HERE_I_AM'."); |
0b0cfcf2 | 969 | } |
970 | ||
971 | service_list_ptr = service_list_ptr->next; | |
972 | } | |
973 | } | |
974 | ||
975 | void | |
976 | wccp2ConnectionOpen(void) | |
977 | { | |
c1f55201 | 978 | struct sockaddr_in router, local, null; |
0b0cfcf2 | 979 | socklen_t local_len, router_len; |
980 | ||
981 | struct wccp2_service_list_t *service_list_ptr; | |
982 | ||
983 | struct wccp2_router_list_t *router_list_ptr; | |
984 | ||
bf8fe701 | 985 | debugs(80, 5, "wccp2ConnectionOpen: Called"); |
0b0cfcf2 | 986 | |
987 | if (wccp2_numrouters == 0 || !wccp2_service_list_head) { | |
bf8fe701 | 988 | debugs(80, 2, "WCCPv2 Disabled."); |
0b0cfcf2 | 989 | return; |
990 | } | |
991 | ||
26ac0430 | 992 | if ( !Config.Wccp2.address.SetIPv4() ) { |
cc192b50 | 993 | debugs(80, 0, "WCCPv2 Disabled. " << Config.Wccp2.address << " is not an IPv4 address."); |
994 | return; | |
995 | } | |
996 | ||
997 | Config.Wccp2.address.SetPort(WCCP_PORT); | |
31be869c | 998 | theWccp2Connection = comm_open_listener(SOCK_DGRAM, |
04f7fd38 AJ |
999 | 0, |
1000 | Config.Wccp2.address, | |
1001 | COMM_NONBLOCKING, | |
1002 | "WCCPv2 Socket"); | |
0b0cfcf2 | 1003 | |
1004 | if (theWccp2Connection < 0) | |
1005 | fatal("Cannot open WCCP Port"); | |
1006 | ||
85d25b95 | 1007 | #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) |
1008 | { | |
1009 | int i = IP_PMTUDISC_DONT; | |
1010 | setsockopt(theWccp2Connection, SOL_IP, IP_MTU_DISCOVER, &i, sizeof i); | |
1011 | } | |
1012 | ||
1013 | #endif | |
0b0cfcf2 | 1014 | commSetSelect(theWccp2Connection, |
1015 | COMM_SELECT_READ, | |
1016 | wccp2HandleUdp, | |
1017 | NULL, | |
1018 | 0); | |
1019 | ||
cc192b50 | 1020 | debugs(80, 1, "Accepting WCCPv2 messages on port " << WCCP_PORT << ", FD " << theWccp2Connection << "."); |
bf8fe701 | 1021 | debugs(80, 1, "Initialising all WCCPv2 lists"); |
0b0cfcf2 | 1022 | |
1023 | /* Initialise all routers on all services */ | |
c1f55201 | 1024 | memset(&null, 0, sizeof(null)); |
1025 | ||
1026 | null.sin_family = AF_UNSPEC; | |
1027 | ||
0b0cfcf2 | 1028 | service_list_ptr = wccp2_service_list_head; |
1029 | ||
1030 | while (service_list_ptr != NULL) { | |
1031 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1032 | router_len = sizeof(router); | |
1033 | memset(&router, '\0', router_len); | |
1034 | router.sin_family = AF_INET; | |
cc192b50 | 1035 | router.sin_port = htons(WCCP_PORT); |
0b0cfcf2 | 1036 | router.sin_addr = router_list_ptr->router_sendto_address; |
1037 | ||
1038 | if (connect(theWccp2Connection, (struct sockaddr *) &router, router_len)) | |
1039 | fatal("Unable to connect WCCP out socket"); | |
1040 | ||
1041 | local_len = sizeof(local); | |
1042 | ||
1043 | memset(&local, '\0', local_len); | |
1044 | ||
1045 | if (getsockname(theWccp2Connection, (struct sockaddr *) &local, &local_len)) | |
1046 | fatal("Unable to getsockname on WCCP out socket"); | |
1047 | ||
1048 | router_list_ptr->local_ip = local.sin_addr; | |
1049 | ||
c1f55201 | 1050 | /* Disconnect the sending socket. Note: FreeBSD returns error |
1051 | * but disconnects anyway so we have to just assume it worked | |
1052 | */ | |
1053 | if (wccp2_numrouters > 1) | |
c1f55201 | 1054 | connect(theWccp2Connection, (struct sockaddr *) &null, router_len); |
0b0cfcf2 | 1055 | } |
1056 | ||
1057 | service_list_ptr = service_list_ptr->next; | |
1058 | } | |
1059 | ||
0b0cfcf2 | 1060 | wccp2_connected = 1; |
1061 | } | |
1062 | ||
1063 | void | |
1064 | wccp2ConnectionClose(void) | |
1065 | { | |
1066 | ||
1067 | struct wccp2_service_list_t *service_list_ptr; | |
1068 | ||
1069 | struct wccp2_service_list_t *service_list_ptr_next; | |
1070 | ||
1071 | struct wccp2_router_list_t *router_list_ptr; | |
1072 | ||
1073 | struct wccp2_router_list_t *router_list_next; | |
1074 | ||
1075 | struct wccp2_cache_list_t *cache_list_ptr; | |
1076 | ||
1077 | struct wccp2_cache_list_t *cache_list_ptr_next; | |
1078 | ||
1079 | if (wccp2_connected == 0) { | |
1080 | return; | |
1081 | } | |
1082 | ||
1083 | if (theWccp2Connection > -1) { | |
76dc4ca3 | 1084 | debugs(80, 1, "FD " << theWccp2Connection << " Closing WCCPv2 socket"); |
0b0cfcf2 | 1085 | comm_close(theWccp2Connection); |
1086 | theWccp2Connection = -1; | |
1087 | } | |
1088 | ||
1089 | /* for each router on each service send a packet */ | |
1090 | service_list_ptr = wccp2_service_list_head; | |
1091 | ||
1092 | while (service_list_ptr != NULL) { | |
1093 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr != NULL; router_list_ptr = router_list_next) { | |
1094 | for (cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr; cache_list_ptr = cache_list_ptr_next) { | |
1095 | cache_list_ptr_next = cache_list_ptr->next; | |
1096 | ||
1097 | if (cache_list_ptr != &router_list_ptr->cache_list_head) { | |
1098 | xfree(cache_list_ptr); | |
1099 | } else { | |
1100 | ||
1101 | memset(cache_list_ptr, '\0', sizeof(struct wccp2_cache_list_t)); | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | router_list_next = router_list_ptr->next; | |
1106 | ||
1107 | if (router_list_ptr != &service_list_ptr->router_list_head) { | |
1108 | xfree(router_list_ptr); | |
1109 | } else { | |
1110 | ||
1111 | memset(router_list_ptr, '\0', sizeof(struct wccp2_router_list_t)); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | service_list_ptr_next = service_list_ptr->next; | |
1116 | xfree(service_list_ptr); | |
1117 | service_list_ptr = service_list_ptr_next; | |
1118 | } | |
1119 | ||
1120 | wccp2_service_list_head = NULL; | |
1121 | eventDelete(wccp2HereIam, NULL); | |
1122 | eventDelete(wccp2AssignBuckets, NULL); | |
1123 | eventDelete(wccp2HereIam, NULL); | |
1124 | wccp2_connected = 0; | |
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * Functions for handling the requests. | |
1129 | */ | |
1130 | ||
1131 | /* | |
1132 | * Accept the UDP packet | |
1133 | */ | |
1134 | static void | |
1135 | wccp2HandleUdp(int sock, void *not_used) | |
1136 | { | |
1137 | ||
1138 | struct wccp2_service_list_t *service_list_ptr; | |
1139 | ||
1140 | struct wccp2_router_list_t *router_list_ptr; | |
1141 | ||
1142 | struct wccp2_cache_list_t *cache_list_ptr; | |
1143 | ||
1144 | struct wccp2_cache_list_t *cache_list_ptr_next; | |
1145 | ||
1146 | /* These structs form the parts of the packet */ | |
1147 | ||
1148 | struct wccp2_item_header_t *header = NULL; | |
1149 | ||
1150 | struct wccp2_security_none_t *security_info = NULL; | |
1151 | ||
1152 | struct wccp2_service_info_t *service_info = NULL; | |
1153 | ||
1154 | struct router_identity_info_t *router_identity_info = NULL; | |
1155 | ||
1156 | struct router_view_t *router_view_header = NULL; | |
1157 | ||
b7d249f9 | 1158 | struct wccp2_cache_mask_identity_info_t *cache_mask_identity = NULL; |
1159 | ||
1160 | struct cache_mask_info_t *cache_mask_info = NULL; | |
1161 | ||
0b0cfcf2 | 1162 | struct wccp2_cache_identity_info_t *cache_identity = NULL; |
1163 | ||
1164 | struct wccp2_capability_info_header_t *router_capability_header = NULL; | |
1165 | ||
1166 | struct wccp2_capability_element_t *router_capability_element; | |
1167 | ||
1168 | struct sockaddr_in from; | |
1169 | ||
2adffc6f | 1170 | struct in_addr cache_address; |
0b0cfcf2 | 1171 | int len, found; |
1172 | short int data_length, offset; | |
1173 | uint32_t tmp; | |
1174 | char *ptr; | |
1175 | int num_caches; | |
0b0cfcf2 | 1176 | |
bf8fe701 | 1177 | debugs(80, 6, "wccp2HandleUdp: Called."); |
0b0cfcf2 | 1178 | |
1179 | commSetSelect(sock, COMM_SELECT_READ, wccp2HandleUdp, NULL, 0); | |
1180 | ||
26ac0430 | 1181 | /* FIXME INET6 : drop conversion boundary */ |
b7ac5457 | 1182 | Ip::Address from_tmp; |
0b0cfcf2 | 1183 | |
1184 | len = comm_udp_recvfrom(sock, | |
1185 | &wccp2_i_see_you, | |
1186 | WCCP_RESPONSE_SIZE, | |
1187 | 0, | |
cc192b50 | 1188 | from_tmp); |
26ac0430 AJ |
1189 | /* FIXME INET6 : drop conversion boundary */ |
1190 | from_tmp.GetSockAddr(from); | |
0b0cfcf2 | 1191 | |
1192 | if (len < 0) | |
1193 | return; | |
1194 | ||
1195 | if (ntohs(wccp2_i_see_you.version) != WCCP2_VERSION) | |
1196 | return; | |
1197 | ||
1198 | if (ntohl(wccp2_i_see_you.type) != WCCP2_I_SEE_YOU) | |
1199 | return; | |
1200 | ||
bf8fe701 | 1201 | debugs(80, 3, "Incoming WCCPv2 I_SEE_YOU length " << ntohs(wccp2_i_see_you.length) << "."); |
0b0cfcf2 | 1202 | |
1203 | /* Record the total data length */ | |
1204 | data_length = ntohs(wccp2_i_see_you.length); | |
1205 | ||
1206 | offset = 0; | |
1207 | ||
1208 | if (data_length > len) { | |
bf8fe701 | 1209 | debugs(80, 1, "ERROR: Malformed WCCPv2 packet claiming it's bigger than received data"); |
0b0cfcf2 | 1210 | return; |
1211 | } | |
1212 | ||
1213 | /* Go through the data structure */ | |
1214 | while (data_length > offset) { | |
1215 | ||
af6a12ee | 1216 | char *data = wccp2_i_see_you.data; |
c6ba4504 HN |
1217 | |
1218 | header = (struct wccp2_item_header_t *) &data[offset]; | |
0b0cfcf2 | 1219 | |
1220 | switch (ntohs(header->type)) { | |
1221 | ||
1222 | case WCCP2_SECURITY_INFO: | |
1223 | ||
1224 | if (security_info != NULL) { | |
bf8fe701 | 1225 | debugs(80, 1, "Duplicate security definition"); |
0b0cfcf2 | 1226 | return; |
1227 | } | |
1228 | ||
1229 | security_info = (struct wccp2_security_none_t *) &wccp2_i_see_you.data[offset]; | |
1230 | break; | |
1231 | ||
1232 | case WCCP2_SERVICE_INFO: | |
1233 | ||
1234 | if (service_info != NULL) { | |
bf8fe701 | 1235 | debugs(80, 1, "Duplicate service_info definition"); |
0b0cfcf2 | 1236 | return; |
1237 | } | |
1238 | ||
1239 | service_info = (struct wccp2_service_info_t *) &wccp2_i_see_you.data[offset]; | |
1240 | break; | |
1241 | ||
1242 | case WCCP2_ROUTER_ID_INFO: | |
1243 | ||
1244 | if (router_identity_info != NULL) { | |
bf8fe701 | 1245 | debugs(80, 1, "Duplicate router_identity_info definition"); |
0b0cfcf2 | 1246 | return; |
1247 | } | |
1248 | ||
1249 | router_identity_info = (struct router_identity_info_t *) &wccp2_i_see_you.data[offset]; | |
1250 | break; | |
1251 | ||
1252 | case WCCP2_RTR_VIEW_INFO: | |
1253 | ||
1254 | if (router_view_header != NULL) { | |
bf8fe701 | 1255 | debugs(80, 1, "Duplicate router_view definition"); |
0b0cfcf2 | 1256 | return; |
1257 | } | |
1258 | ||
1259 | router_view_header = (struct router_view_t *) &wccp2_i_see_you.data[offset]; | |
1260 | break; | |
1261 | ||
1262 | case WCCP2_CAPABILITY_INFO: | |
1263 | ||
1264 | if (router_capability_header != NULL) { | |
bf8fe701 | 1265 | debugs(80, 1, "Duplicate router_capability definition"); |
0b0cfcf2 | 1266 | return; |
1267 | } | |
1268 | ||
1269 | router_capability_header = (struct wccp2_capability_info_header_t *) &wccp2_i_see_you.data[offset]; | |
c1f55201 | 1270 | break; |
0b0cfcf2 | 1271 | |
b7d249f9 | 1272 | /* Nothing to do for the types below */ |
1273 | ||
1274 | case WCCP2_ASSIGN_MAP: | |
1275 | break; | |
1276 | ||
0b0cfcf2 | 1277 | default: |
bf8fe701 | 1278 | debugs(80, 1, "Unknown record type in WCCPv2 Packet (" << ntohs(header->type) << ")."); |
0b0cfcf2 | 1279 | } |
1280 | ||
1281 | offset += sizeof(struct wccp2_item_header_t); | |
1282 | offset += ntohs(header->length); | |
1283 | ||
1284 | if (offset > data_length) { | |
bf8fe701 | 1285 | debugs(80, 1, "Error: WCCPv2 packet tried to tell us there is data beyond the end of the packet"); |
0b0cfcf2 | 1286 | return; |
1287 | } | |
1288 | } | |
1289 | ||
1290 | if ((security_info == NULL) || (service_info == NULL) || (router_identity_info == NULL) || (router_view_header == NULL)) { | |
bf8fe701 | 1291 | debugs(80, 1, "Incomplete WCCPv2 Packet"); |
0b0cfcf2 | 1292 | return; |
1293 | } | |
1294 | ||
bf8fe701 | 1295 | debugs(80, 5, "Complete packet received"); |
0b0cfcf2 | 1296 | |
1297 | /* Check that the service in the packet is configured on this router */ | |
1298 | service_list_ptr = wccp2_service_list_head; | |
1299 | ||
1300 | while (service_list_ptr != NULL) { | |
1301 | if (service_info->service_id == service_list_ptr->service_info->service_id) { | |
1302 | break; | |
1303 | } | |
1304 | ||
1305 | service_list_ptr = service_list_ptr->next; | |
1306 | } | |
1307 | ||
1308 | if (service_list_ptr == NULL) { | |
bf8fe701 | 1309 | debugs(80, 1, "WCCPv2 Unknown service received from router (" << service_info->service_id << ")"); |
0b0cfcf2 | 1310 | return; |
1311 | } | |
1312 | ||
1313 | if (ntohl(security_info->security_option) != ntohl(service_list_ptr->security_info->security_option)) { | |
6013702c | 1314 | debugs(80, 1, "Invalid security option in WCCPv2 Packet (" << ntohl(security_info->security_option) << " vs " << ntohl(service_list_ptr->security_info->security_option) << ")."); |
0b0cfcf2 | 1315 | return; |
1316 | } | |
1317 | ||
1318 | if (!wccp2_check_security(service_list_ptr, (char *) security_info, (char *) &wccp2_i_see_you, len)) { | |
bf8fe701 | 1319 | debugs(80, 1, "Received WCCPv2 Packet failed authentication"); |
0b0cfcf2 | 1320 | return; |
1321 | } | |
1322 | ||
1323 | /* Check that the router address is configured on this router */ | |
1324 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1325 | if (router_list_ptr->router_sendto_address.s_addr == from.sin_addr.s_addr) | |
1326 | break; | |
1327 | } | |
1328 | ||
1329 | if (router_list_ptr->next == NULL) { | |
bf8fe701 | 1330 | debugs(80, 1, "WCCPv2 Packet received from unknown router"); |
0b0cfcf2 | 1331 | return; |
1332 | } | |
1333 | ||
1334 | /* Set the router id */ | |
1335 | router_list_ptr->info->router_address = router_identity_info->router_id_element.router_address; | |
1336 | ||
1337 | /* Increment the received id in the packet */ | |
1338 | if (ntohl(router_list_ptr->info->received_id) != ntohl(router_identity_info->router_id_element.received_id)) { | |
6013702c | 1339 | debugs(80, 3, "Incoming WCCP2_I_SEE_YOU Received ID old=" << ntohl(router_list_ptr->info->received_id) << " new=" << ntohl(router_identity_info->router_id_element.received_id) << "."); |
0b0cfcf2 | 1340 | router_list_ptr->info->received_id = router_identity_info->router_id_element.received_id; |
1341 | } | |
1342 | ||
1343 | /* TODO: check return/forwarding methods */ | |
1344 | if (router_capability_header == NULL) { | |
c1f55201 | 1345 | if ((Config.Wccp2.return_method != WCCP2_PACKET_RETURN_METHOD_GRE) || (Config.Wccp2.forwarding_method != WCCP2_FORWARDING_METHOD_GRE)) { |
bf8fe701 | 1346 | debugs(80, 1, "wccp2HandleUdp: fatal error - A WCCP router does not support the forwarding method specified, only GRE supported"); |
0b0cfcf2 | 1347 | wccp2ConnectionClose(); |
1348 | return; | |
1349 | } | |
1350 | } else { | |
0b0cfcf2 | 1351 | |
c1f55201 | 1352 | char *end = ((char *) router_capability_header) + sizeof(*router_capability_header) + ntohs(router_capability_header->capability_info_length) - sizeof(struct wccp2_capability_info_header_t); |
1353 | ||
1354 | router_capability_element = (struct wccp2_capability_element_t *) (((char *) router_capability_header) + sizeof(*router_capability_header)); | |
0b0cfcf2 | 1355 | |
c1f55201 | 1356 | while ((char *) router_capability_element <= end) { |
0b0cfcf2 | 1357 | |
1358 | switch (ntohs(router_capability_element->capability_type)) { | |
1359 | ||
1360 | case WCCP2_CAPABILITY_FORWARDING_METHOD: | |
1361 | ||
c1f55201 | 1362 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.forwarding_method)) { |
6013702c | 1363 | debugs(80, 1, "wccp2HandleUdp: fatal error - A WCCP router has specified a different forwarding method " << ntohl(router_capability_element->capability_value) << ", expected " << Config.Wccp2.forwarding_method); |
0b0cfcf2 | 1364 | wccp2ConnectionClose(); |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | break; | |
1369 | ||
1370 | case WCCP2_CAPABILITY_ASSIGNMENT_METHOD: | |
c1f55201 | 1371 | |
b7d249f9 | 1372 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.assignment_method)) { |
1373 | debugs(80, 1, "wccp2HandleUdp: fatal error - A WCCP router has specified a different assignment method " << ntohl(router_capability_element->capability_value) << ", expected "<< Config.Wccp2.assignment_method); | |
c1f55201 | 1374 | wccp2ConnectionClose(); |
1375 | return; | |
1376 | } | |
1377 | ||
0b0cfcf2 | 1378 | break; |
1379 | ||
1380 | case WCCP2_CAPABILITY_RETURN_METHOD: | |
1381 | ||
c1f55201 | 1382 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.return_method)) { |
6013702c | 1383 | debugs(80, 1, "wccp2HandleUdp: fatal error - A WCCP router has specified a different return method " << ntohl(router_capability_element->capability_value) << ", expected " << Config.Wccp2.return_method); |
0b0cfcf2 | 1384 | wccp2ConnectionClose(); |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | break; | |
1389 | ||
1390 | default: | |
bf8fe701 | 1391 | debugs(80, 1, "Unknown capability type in WCCPv2 Packet (" << ntohs(router_capability_element->capability_type) << ")."); |
0b0cfcf2 | 1392 | } |
c1f55201 | 1393 | |
c898ced1 | 1394 | router_capability_element = (struct wccp2_capability_element_t *) (((char *) router_capability_element) + sizeof(struct wccp2_item_header_t) + ntohs(router_capability_element->capability_length)); |
0b0cfcf2 | 1395 | } |
1396 | } | |
1397 | ||
bf8fe701 | 1398 | debugs(80, 5, "Cleaning out cache list"); |
0b0cfcf2 | 1399 | /* clean out the old cache list */ |
1400 | ||
1401 | for (cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr; cache_list_ptr = cache_list_ptr_next) { | |
1402 | cache_list_ptr_next = cache_list_ptr->next; | |
1403 | ||
1404 | if (cache_list_ptr != &router_list_ptr->cache_list_head) { | |
1405 | xfree(cache_list_ptr); | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | router_list_ptr->num_caches = htonl(0); | |
1410 | num_caches = 0; | |
1411 | ||
1412 | /* Check to see if we're the master cache and update the cache list */ | |
1413 | found = 0; | |
1414 | service_list_ptr->lowest_ip = 1; | |
1415 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1416 | ||
1417 | /* to find the list of caches, we start at the end of the router view header */ | |
1418 | ||
1419 | ptr = (char *) (router_view_header) + sizeof(struct router_view_t); | |
1420 | ||
1421 | /* Then we read the number of routers */ | |
1422 | memcpy(&tmp, ptr, sizeof(tmp)); | |
1423 | ||
1424 | /* skip the number plus all the ip's */ | |
1425 | ||
2adffc6f | 1426 | ptr += sizeof(tmp) + (ntohl(tmp) * sizeof(struct in_addr)); |
0b0cfcf2 | 1427 | |
1428 | /* Then read the number of caches */ | |
1429 | memcpy(&tmp, ptr, sizeof(tmp)); | |
1430 | ptr += sizeof(tmp); | |
1431 | ||
1432 | if (ntohl(tmp) != 0) { | |
1433 | /* search through the list of received-from ip addresses */ | |
1434 | ||
1435 | for (num_caches = 0; num_caches < (int) ntohl(tmp); num_caches++) { | |
1436 | /* Get a copy of the ip */ | |
af6a12ee | 1437 | memset(&cache_address, 0, sizeof(cache_address)); // Make GCC happy |
0b0cfcf2 | 1438 | |
b7d249f9 | 1439 | switch (Config.Wccp2.assignment_method) { |
1440 | ||
1441 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1442 | ||
1443 | cache_identity = (struct wccp2_cache_identity_info_t *) ptr; | |
1444 | ||
1445 | ptr += sizeof(struct wccp2_cache_identity_info_t); | |
1446 | ||
2adffc6f | 1447 | memcpy(&cache_address, &cache_identity->addr, sizeof(struct in_addr)); |
b7d249f9 | 1448 | |
1449 | cache_list_ptr->weight = ntohs(cache_identity->weight); | |
1450 | break; | |
1451 | ||
1452 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1453 | ||
1454 | cache_mask_info = (struct cache_mask_info_t *) ptr; | |
1455 | ||
1456 | /* The mask assignment has an undocumented variable length entry here */ | |
1457 | ||
1458 | if (ntohl(cache_mask_info->num1) == 3) { | |
1459 | ||
1460 | cache_mask_identity = (struct wccp2_cache_mask_identity_info_t *) ptr; | |
1461 | ||
1462 | ptr += sizeof(struct wccp2_cache_mask_identity_info_t); | |
0b0cfcf2 | 1463 | |
2adffc6f | 1464 | memcpy(&cache_address, &cache_mask_identity->addr, sizeof(struct in_addr)); |
b7d249f9 | 1465 | } else { |
1466 | ||
1467 | ptr += sizeof(struct cache_mask_info_t); | |
1468 | ||
2adffc6f | 1469 | memcpy(&cache_address, &cache_mask_info->addr, sizeof(struct in_addr)); |
b7d249f9 | 1470 | } |
0b0cfcf2 | 1471 | |
b7d249f9 | 1472 | cache_list_ptr->weight = 0; |
1473 | break; | |
1474 | ||
1475 | default: | |
1476 | fatalf("Unknown Wccp2 assignment method\n"); | |
1477 | } | |
0b0cfcf2 | 1478 | |
1479 | /* Update the cache list */ | |
1480 | cache_list_ptr->cache_ip = cache_address; | |
b7d249f9 | 1481 | |
0b0cfcf2 | 1482 | cache_list_ptr->next = (wccp2_cache_list_t*) xcalloc(1, sizeof(struct wccp2_cache_list_t)); |
b7d249f9 | 1483 | |
0b0cfcf2 | 1484 | cache_list_ptr = cache_list_ptr->next; |
b7d249f9 | 1485 | |
0b0cfcf2 | 1486 | cache_list_ptr->next = NULL; |
1487 | ||
bf8fe701 | 1488 | debugs (80, 5, "checking cache list: (" << std::hex << cache_address.s_addr << ":" << router_list_ptr->local_ip.s_addr << ")"); |
b7d249f9 | 1489 | |
0b0cfcf2 | 1490 | /* Check to see if it's the master, or us */ |
1491 | ||
1492 | if (cache_address.s_addr == router_list_ptr->local_ip.s_addr) { | |
1493 | found = 1; | |
1494 | } | |
1495 | ||
1496 | if (cache_address.s_addr < router_list_ptr->local_ip.s_addr) { | |
1497 | service_list_ptr->lowest_ip = 0; | |
1498 | } | |
1499 | } | |
1500 | } else { | |
bf8fe701 | 1501 | debugs(80, 5, "Adding ourselves as the only cache"); |
0b0cfcf2 | 1502 | |
1503 | /* Update the cache list */ | |
1504 | cache_list_ptr->cache_ip = router_list_ptr->local_ip; | |
1505 | ||
1506 | cache_list_ptr->next = (wccp2_cache_list_t*) xcalloc(1, sizeof(struct wccp2_cache_list_t)); | |
1507 | cache_list_ptr = cache_list_ptr->next; | |
1508 | cache_list_ptr->next = NULL; | |
1509 | ||
b7d249f9 | 1510 | service_list_ptr->lowest_ip = 1; |
0b0cfcf2 | 1511 | found = 1; |
1512 | num_caches = 1; | |
1513 | } | |
1514 | ||
264096e2 | 1515 | wccp2SortCacheList(&router_list_ptr->cache_list_head); |
1516 | ||
0b0cfcf2 | 1517 | router_list_ptr->num_caches = htonl(num_caches); |
1518 | ||
1519 | if ((found == 1) && (service_list_ptr->lowest_ip == 1)) { | |
1520 | if (ntohl(router_view_header->change_number) != router_list_ptr->member_change) { | |
bf8fe701 | 1521 | debugs(80, 4, "Change detected - queueing up new assignment"); |
0b0cfcf2 | 1522 | router_list_ptr->member_change = ntohl(router_view_header->change_number); |
c1f55201 | 1523 | eventDelete(wccp2AssignBuckets, NULL); |
1524 | eventAdd("wccp2AssignBuckets", wccp2AssignBuckets, NULL, 15.0, 1); | |
b7d249f9 | 1525 | } else { |
4a7a3d56 | 1526 | debugs(80, 5, "Change not detected (" << ntohl(router_view_header->change_number) << " = " << router_list_ptr->member_change << ")"); |
0b0cfcf2 | 1527 | } |
1528 | } else { | |
b7d249f9 | 1529 | eventDelete(wccp2AssignBuckets, NULL); |
bf8fe701 | 1530 | debugs(80, 5, "I am not the lowest ip cache - not assigning buckets"); |
0b0cfcf2 | 1531 | } |
1532 | } | |
1533 | ||
1534 | static void | |
1535 | wccp2HereIam(void *voidnotused) | |
1536 | { | |
1537 | ||
1538 | struct wccp2_service_list_t *service_list_ptr; | |
1539 | ||
1540 | struct wccp2_router_list_t *router_list_ptr; | |
1541 | ||
b7d249f9 | 1542 | struct wccp2_identity_info_t *wccp2_identity_info_ptr; |
1543 | ||
1544 | struct wccp2_mask_identity_info_t *wccp2_mask_identity_info_ptr; | |
1545 | ||
b7ac5457 | 1546 | Ip::Address router; |
0b0cfcf2 | 1547 | |
bf8fe701 | 1548 | debugs(80, 6, "wccp2HereIam: Called"); |
0b0cfcf2 | 1549 | |
1550 | if (wccp2_connected == 0) { | |
bf8fe701 | 1551 | debugs(80, 1, "wccp2HereIam: wccp2 socket closed. Shutting down WCCP2"); |
0b0cfcf2 | 1552 | return; |
1553 | } | |
1554 | ||
bef81ea5 | 1555 | /* Wait if store dirs are rebuilding */ |
1556 | if (StoreController::store_dirs_rebuilding && Config.Wccp2.rebuildwait) { | |
f67332d3 | 1557 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 1.0, 1); |
1558 | return; | |
1559 | } | |
1560 | ||
cc192b50 | 1561 | router.SetPort(WCCP_PORT); |
0b0cfcf2 | 1562 | |
1563 | /* for each router on each service send a packet */ | |
1564 | service_list_ptr = wccp2_service_list_head; | |
1565 | ||
1566 | while (service_list_ptr != NULL) { | |
bf8fe701 | 1567 | debugs(80, 5, "wccp2HereIam: sending to service id " << service_list_ptr->info.service_id); |
0b0cfcf2 | 1568 | |
1569 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
cc192b50 | 1570 | router = router_list_ptr->router_sendto_address; |
0b0cfcf2 | 1571 | |
1572 | /* Set the cache id (ip) */ | |
b7d249f9 | 1573 | |
1574 | switch (Config.Wccp2.assignment_method) { | |
1575 | ||
1576 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1577 | ||
1578 | wccp2_identity_info_ptr = (struct wccp2_identity_info_t *) service_list_ptr->wccp2_identity_info_ptr; | |
1579 | wccp2_identity_info_ptr->cache_identity.addr = router_list_ptr->local_ip; | |
1580 | break; | |
1581 | ||
1582 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1583 | ||
1584 | wccp2_mask_identity_info_ptr = (struct wccp2_mask_identity_info_t *) service_list_ptr->wccp2_identity_info_ptr; | |
1585 | wccp2_mask_identity_info_ptr->cache_identity.addr = router_list_ptr->local_ip; | |
1586 | break; | |
1587 | ||
1588 | default: | |
1589 | fatalf("Unknown Wccp2 assignment method\n"); | |
1590 | } | |
1591 | ||
0b0cfcf2 | 1592 | /* Security update, if needed */ |
1593 | ||
1594 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
1595 | wccp2_update_md5_security(service_list_ptr->wccp_password, (char *) service_list_ptr->security_info, service_list_ptr->wccp_packet, service_list_ptr->wccp_packet_size); | |
1596 | } | |
1597 | ||
4a7a3d56 | 1598 | debugs(80, 3, "Sending HereIam packet size " << service_list_ptr->wccp_packet_size); |
0b0cfcf2 | 1599 | /* Send the packet */ |
0b0cfcf2 | 1600 | |
c1f55201 | 1601 | if (wccp2_numrouters > 1) { |
1602 | comm_udp_sendto(theWccp2Connection, | |
cc192b50 | 1603 | router, |
c1f55201 | 1604 | &service_list_ptr->wccp_packet, |
1605 | service_list_ptr->wccp_packet_size); | |
1606 | } else { | |
1607 | send(theWccp2Connection, | |
1608 | &service_list_ptr->wccp_packet, | |
1609 | service_list_ptr->wccp_packet_size, | |
1610 | 0); | |
1611 | } | |
0b0cfcf2 | 1612 | } |
1613 | ||
1614 | service_list_ptr = service_list_ptr->next; | |
1615 | } | |
1616 | ||
f67332d3 | 1617 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 10.0, 1); |
0b0cfcf2 | 1618 | } |
1619 | ||
1620 | static void | |
1621 | wccp2AssignBuckets(void *voidnotused) | |
1622 | { | |
1623 | ||
1624 | struct wccp2_service_list_t *service_list_ptr; | |
1625 | ||
1626 | struct wccp2_router_list_t *router_list_ptr; | |
1627 | ||
1628 | struct wccp2_cache_list_t *cache_list_ptr; | |
1629 | char wccp_packet[WCCP_RESPONSE_SIZE]; | |
b7d249f9 | 1630 | short int offset, saved_offset, assignment_offset, alt_assignment_offset; |
0b0cfcf2 | 1631 | |
1632 | struct sockaddr_in router; | |
1633 | int router_len; | |
1634 | int bucket_counter; | |
b7d249f9 | 1635 | uint32_t service_flags; |
0b0cfcf2 | 1636 | u_short port = WCCP_PORT; |
1637 | ||
1638 | /* Packet segments */ | |
1639 | ||
c898ced1 | 1640 | struct wccp2_message_header_t *main_header; |
0b0cfcf2 | 1641 | |
1642 | struct wccp2_security_md5_t *security = NULL; | |
1643 | /* service from service struct */ | |
1644 | ||
1645 | struct wccp2_item_header_t *assignment_header; | |
1646 | ||
b7d249f9 | 1647 | struct wccp2_item_header_t *alt_assignment_type_header = NULL; |
1648 | ||
0b0cfcf2 | 1649 | struct assignment_key_t *assignment_key; |
1650 | /* number of routers */ | |
1651 | ||
1652 | struct wccp2_router_assign_element_t *router_assign; | |
1653 | /* number of caches */ | |
1654 | ||
2adffc6f | 1655 | struct in_addr *cache_address; |
b7d249f9 | 1656 | /* Alternative assignement mask/values */ |
1657 | int num_maskval; | |
1658 | ||
1659 | struct wccp2_mask_element_t *mask_element; | |
1660 | ||
1661 | struct wccp2_value_element_t *value_element; | |
1662 | int valuecounter, value; | |
0b0cfcf2 | 1663 | char *buckets; |
1664 | ||
b7d249f9 | 1665 | assignment_offset = alt_assignment_offset = 0; |
1666 | ||
0b0cfcf2 | 1667 | router_len = sizeof(router); |
1668 | memset(&router, '\0', router_len); | |
1669 | router.sin_family = AF_INET; | |
1670 | router.sin_port = htons(port); | |
1671 | ||
1672 | /* Start main header - fill in length later */ | |
1673 | offset = 0; | |
1674 | ||
c898ced1 | 1675 | main_header = (struct wccp2_message_header_t *) &wccp_packet[offset]; |
0b0cfcf2 | 1676 | main_header->type = htonl(WCCP2_REDIRECT_ASSIGN); |
1677 | main_header->version = htons(WCCP2_VERSION); | |
1678 | ||
bf8fe701 | 1679 | debugs(80, 2, "Running wccp2AssignBuckets"); |
0b0cfcf2 | 1680 | service_list_ptr = wccp2_service_list_head; |
1681 | ||
1682 | while (service_list_ptr != NULL) { | |
1683 | /* If we're not the lowest, we don't need to worry */ | |
1684 | ||
1685 | if (service_list_ptr->lowest_ip == 0) { | |
1686 | /* XXX eww */ | |
1687 | service_list_ptr = service_list_ptr->next; | |
1688 | continue; | |
1689 | } | |
1690 | ||
1691 | /* reset the offset */ | |
1692 | ||
c898ced1 | 1693 | offset = sizeof(struct wccp2_message_header_t); |
0b0cfcf2 | 1694 | |
1695 | /* build packet header from hereIam packet */ | |
1696 | /* Security info */ | |
1697 | /* XXX this should be made more generic! */ | |
1698 | /* XXX and I hate magic numbers! */ | |
1699 | switch (service_list_ptr->wccp2_security_type) { | |
1700 | ||
1701 | case WCCP2_NO_SECURITY: | |
1702 | ||
1703 | security = (struct wccp2_security_md5_t *) &wccp_packet[offset]; | |
1704 | memcpy(security, service_list_ptr->security_info, 8); | |
1705 | offset += 8; | |
1706 | break; | |
1707 | ||
1708 | case WCCP2_MD5_SECURITY: | |
1709 | ||
1710 | security = (struct wccp2_security_md5_t *) &wccp_packet[offset]; | |
1711 | ||
1712 | memcpy(security, service_list_ptr->security_info, sizeof(struct wccp2_security_md5_t)); | |
1713 | ||
1714 | offset += sizeof(struct wccp2_security_md5_t); | |
1715 | break; | |
1716 | ||
1717 | default: | |
1718 | fatalf("Unknown Wccp2 security type\n"); | |
1719 | } | |
1720 | ||
1721 | /* Service info */ | |
1722 | ||
1723 | memcpy(&wccp_packet[offset], service_list_ptr->service_info, sizeof(struct wccp2_service_info_t)); | |
1724 | ||
1725 | offset += sizeof(struct wccp2_service_info_t); | |
1726 | ||
1727 | /* assignment header - fill in length later */ | |
1728 | ||
1729 | assignment_header = (struct wccp2_item_header_t *) &wccp_packet[offset]; | |
1730 | ||
b7d249f9 | 1731 | switch (Config.Wccp2.assignment_method) { |
0b0cfcf2 | 1732 | |
b7d249f9 | 1733 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
1734 | assignment_header->type = htons(WCCP2_REDIRECT_ASSIGNMENT); | |
1735 | ||
1736 | offset += sizeof(struct wccp2_item_header_t); | |
1737 | assignment_offset = offset; | |
1738 | break; | |
1739 | ||
1740 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1741 | assignment_header->type = htons(WCCP2_ALT_ASSIGNMENT); | |
1742 | ||
1743 | offset += sizeof(struct wccp2_item_header_t); | |
1744 | assignment_offset = offset; | |
1745 | ||
1746 | /* The alternative assignment has an extra header, fill in length later */ | |
1747 | ||
1748 | alt_assignment_type_header = (struct wccp2_item_header_t *) &wccp_packet[offset]; | |
1749 | alt_assignment_type_header->type = htons(WCCP2_MASK_ASSIGNMENT); | |
1750 | ||
1751 | offset += sizeof(struct wccp2_item_header_t); | |
1752 | alt_assignment_offset = offset; | |
1753 | ||
1754 | break; | |
1755 | ||
1756 | default: | |
1757 | fatalf("Unknown Wccp2 assignment method\n"); | |
1758 | } | |
0b0cfcf2 | 1759 | |
1760 | /* Assignment key - fill in master ip later */ | |
1761 | ||
1762 | assignment_key = (struct assignment_key_t *) &wccp_packet[offset]; | |
1763 | ||
1764 | assignment_key->master_number = htonl(++service_list_ptr->change_num); | |
1765 | ||
1766 | offset += sizeof(struct assignment_key_t); | |
1767 | ||
1768 | /* Number of routers */ | |
1769 | xmemcpy(&wccp_packet[offset], &service_list_ptr->num_routers, sizeof(service_list_ptr->num_routers)); | |
1770 | ||
1771 | offset += sizeof(service_list_ptr->num_routers); | |
1772 | ||
1773 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1774 | ||
1775 | /* Add routers */ | |
1776 | ||
1777 | router_assign = (struct wccp2_router_assign_element_t *) &wccp_packet[offset]; | |
1778 | router_assign->router_address = router_list_ptr->info->router_address; | |
1779 | router_assign->received_id = router_list_ptr->info->received_id; | |
1780 | router_assign->change_number = htonl(router_list_ptr->member_change); | |
1781 | ||
1782 | offset += sizeof(struct wccp2_router_assign_element_t); | |
1783 | } | |
1784 | ||
1785 | saved_offset = offset; | |
1786 | ||
1787 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
b7d249f9 | 1788 | unsigned long *weight = (unsigned long *)xcalloc(sizeof(*weight), ntohl(router_list_ptr->num_caches)); |
1789 | unsigned long total_weight = 0; | |
1790 | int num_caches = ntohl(router_list_ptr->num_caches); | |
f16fbc82 | 1791 | |
0b0cfcf2 | 1792 | offset = saved_offset; |
1793 | ||
b7d249f9 | 1794 | switch (Config.Wccp2.assignment_method) { |
1795 | ||
1796 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1797 | /* Number of caches */ | |
1798 | xmemcpy(&wccp_packet[offset], &router_list_ptr->num_caches, sizeof(router_list_ptr->num_caches)); | |
1799 | offset += sizeof(router_list_ptr->num_caches); | |
1800 | ||
1801 | if (num_caches) { | |
1802 | int cache; | |
1803 | ||
1804 | for (cache = 0, cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr->next; cache_list_ptr = cache_list_ptr->next, cache++) { | |
1805 | /* add caches */ | |
0b0cfcf2 | 1806 | |
2adffc6f | 1807 | cache_address = (struct in_addr *) &wccp_packet[offset]; |
0b0cfcf2 | 1808 | |
2adffc6f | 1809 | xmemcpy(cache_address, &cache_list_ptr->cache_ip, sizeof(struct in_addr)); |
b7d249f9 | 1810 | total_weight += cache_list_ptr->weight << 12; |
1811 | weight[cache] = cache_list_ptr->weight << 12; | |
0b0cfcf2 | 1812 | |
2adffc6f | 1813 | offset += sizeof(struct in_addr); |
b7d249f9 | 1814 | } |
0b0cfcf2 | 1815 | } |
0b0cfcf2 | 1816 | |
b7d249f9 | 1817 | /* Add buckets */ |
1818 | buckets = (char *) &wccp_packet[offset]; | |
1819 | ||
1820 | memset(buckets, '\0', WCCP_BUCKETS); | |
1821 | ||
1822 | if (num_caches != 0) { | |
1823 | if (total_weight == 0) { | |
1824 | for (bucket_counter = 0; bucket_counter < WCCP_BUCKETS; bucket_counter++) { | |
1825 | buckets[bucket_counter] = (char) (bucket_counter % num_caches); | |
1826 | } | |
1827 | } else { | |
1828 | unsigned long *assigned = (unsigned long *)xcalloc(sizeof(*assigned), num_caches); | |
1829 | unsigned long done = 0; | |
1830 | int cache = -1; | |
1831 | unsigned long per_bucket = total_weight / WCCP_BUCKETS; | |
1832 | ||
1833 | for (bucket_counter = 0; bucket_counter < WCCP_BUCKETS; bucket_counter++) { | |
1834 | int n; | |
1835 | unsigned long step; | |
1836 | ||
1837 | for (n = num_caches; n; n--) { | |
1838 | cache++; | |
1839 | ||
1840 | if (cache >= num_caches) | |
1841 | cache = 0; | |
1842 | ||
1843 | if (!weight[cache]) { | |
1844 | n++; | |
1845 | continue; | |
1846 | } | |
1847 | ||
1848 | if (assigned[cache] <= done) | |
1849 | break; | |
1850 | } | |
1851 | ||
1852 | buckets[bucket_counter] = (char) cache; | |
1853 | step = per_bucket * total_weight / weight[cache]; | |
1854 | assigned[cache] += step; | |
1855 | done += per_bucket; | |
1856 | } | |
1857 | ||
1858 | safe_free(assigned); | |
1859 | } | |
1860 | } | |
0b0cfcf2 | 1861 | |
b7d249f9 | 1862 | offset += (WCCP_BUCKETS * sizeof(char)); |
1863 | safe_free(weight); | |
1864 | break; | |
0b0cfcf2 | 1865 | |
b7d249f9 | 1866 | case WCCP2_ASSIGNMENT_METHOD_MASK: |
1867 | num_maskval = htonl(1); | |
1868 | xmemcpy(&wccp_packet[offset], &num_maskval, sizeof(int)); | |
1869 | offset += sizeof(int); | |
1870 | ||
1871 | mask_element = (struct wccp2_mask_element_t *) &wccp_packet[offset]; | |
1872 | service_flags = ntohl(service_list_ptr->service_info->service_flags); | |
1873 | ||
1874 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { | |
1875 | mask_element->source_ip_mask = htonl(0x00001741); | |
1876 | mask_element->dest_ip_mask = 0; | |
1877 | mask_element->source_port_mask = 0; | |
1878 | mask_element->dest_port_mask = 0; | |
1879 | } else if ((service_list_ptr->info.service == WCCP2_SERVICE_STANDARD) || (service_flags & WCCP2_SERVICE_DST_IP_HASH) || (service_flags & WCCP2_SERVICE_DST_IP_ALT_HASH)) { | |
1880 | mask_element->source_ip_mask = 0; | |
1881 | mask_element->dest_ip_mask = htonl(0x00001741); | |
1882 | mask_element->source_port_mask = 0; | |
1883 | mask_element->dest_port_mask = 0; | |
1884 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { | |
1885 | mask_element->source_ip_mask = 0; | |
1886 | mask_element->dest_ip_mask = 0; | |
1887 | mask_element->source_port_mask = htons(0x1741); | |
1888 | mask_element->dest_port_mask = 0; | |
1889 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { | |
1890 | mask_element->source_ip_mask = 0; | |
1891 | mask_element->dest_ip_mask = 0; | |
1892 | mask_element->source_port_mask = 0; | |
1893 | mask_element->dest_port_mask = htons(0x1741); | |
1894 | } else { | |
1895 | fatalf("Unknown service hash method\n"); | |
1896 | } | |
1897 | ||
1898 | mask_element->number_values = htonl(64); | |
1899 | ||
1900 | offset += sizeof(struct wccp2_mask_element_t); | |
1901 | ||
1902 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1903 | value = 0; | |
1904 | ||
1905 | for (valuecounter = 0; valuecounter < 64; valuecounter++) { | |
1906 | ||
1907 | value_element = (struct wccp2_value_element_t *) &wccp_packet[offset]; | |
1908 | ||
25e26086 | 1909 | /* Update the value according the the "correct" formula */ |
1910 | ||
9366bab7 | 1911 | for (; (value & 0x1741) != value; value++) { |
25e26086 | 1912 | assert(value <= 0x1741); |
1913 | } | |
1914 | ||
b7d249f9 | 1915 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { |
1916 | value_element->source_ip_value = htonl(value); | |
1917 | value_element->dest_ip_value = 0; | |
1918 | value_element->source_port_value = 0; | |
1919 | value_element->dest_port_value = 0; | |
1920 | } else if ((service_list_ptr->info.service == WCCP2_SERVICE_STANDARD) || (service_flags & WCCP2_SERVICE_DST_IP_HASH) || (service_flags & WCCP2_SERVICE_DST_IP_ALT_HASH)) { | |
1921 | value_element->source_ip_value = 0; | |
1922 | value_element->dest_ip_value = htonl(value); | |
1923 | value_element->source_port_value = 0; | |
1924 | value_element->dest_port_value = 0; | |
1925 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { | |
1926 | value_element->source_ip_value = 0; | |
1927 | value_element->dest_ip_value = 0; | |
1928 | value_element->source_port_value = htons(value); | |
1929 | value_element->dest_port_value = 0; | |
1930 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { | |
1931 | value_element->source_ip_value = 0; | |
1932 | value_element->dest_ip_value = 0; | |
1933 | value_element->source_port_value = 0; | |
1934 | value_element->dest_port_value = htons(value); | |
1935 | } else { | |
1936 | fatalf("Unknown service hash method\n"); | |
1937 | } | |
1938 | ||
1939 | value_element->cache_ip = cache_list_ptr->cache_ip; | |
1940 | ||
1941 | offset += sizeof(struct wccp2_value_element_t); | |
25e26086 | 1942 | value++; |
b7d249f9 | 1943 | |
1944 | /* Assign the next value to the next cache */ | |
25e26086 | 1945 | |
b7d249f9 | 1946 | if ((cache_list_ptr->next) && (cache_list_ptr->next->next)) |
1947 | cache_list_ptr = cache_list_ptr->next; | |
1948 | else | |
1949 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1950 | } | |
0b0cfcf2 | 1951 | |
b7d249f9 | 1952 | /* Fill in length */ |
1953 | alt_assignment_type_header->length = htons(offset - alt_assignment_offset); | |
1954 | ||
1955 | break; | |
1956 | ||
1957 | default: | |
1958 | fatalf("Unknown Wccp2 assignment method\n"); | |
1959 | } | |
1960 | ||
1961 | /* Fill in length */ | |
0b0cfcf2 | 1962 | |
b7d249f9 | 1963 | assignment_header->length = htons(offset - assignment_offset); |
0b0cfcf2 | 1964 | |
1965 | /* Fill in assignment key */ | |
1966 | assignment_key->master_ip = router_list_ptr->local_ip; | |
1967 | ||
1968 | /* finish length */ | |
1969 | ||
c898ced1 | 1970 | main_header->length = htons(offset - sizeof(struct wccp2_message_header_t)); |
0b0cfcf2 | 1971 | |
1972 | /* set the destination address */ | |
1973 | router.sin_addr = router_list_ptr->router_sendto_address; | |
1974 | ||
1975 | /* Security update, if needed */ | |
1976 | ||
1977 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
1978 | wccp2_update_md5_security(service_list_ptr->wccp_password, (char *) security, wccp_packet, offset); | |
1979 | } | |
1980 | ||
1981 | if (ntohl(router_list_ptr->num_caches)) { | |
1982 | /* send packet */ | |
c1f55201 | 1983 | |
1984 | if (wccp2_numrouters > 1) { | |
26ac0430 | 1985 | /* FIXME INET6 : drop temp conversion */ |
b7ac5457 | 1986 | Ip::Address tmp_rtr(router); |
c1f55201 | 1987 | comm_udp_sendto(theWccp2Connection, |
cc192b50 | 1988 | tmp_rtr, |
c1f55201 | 1989 | &wccp_packet, |
1990 | offset); | |
1991 | } else { | |
1992 | send(theWccp2Connection, | |
1993 | &wccp_packet, | |
1994 | offset, | |
1995 | 0); | |
1996 | } | |
0b0cfcf2 | 1997 | } |
1998 | } | |
1999 | ||
2000 | service_list_ptr = service_list_ptr->next; | |
2001 | } | |
2002 | } | |
2003 | ||
2004 | ||
2005 | /* | |
2006 | * Configuration option parsing code | |
2007 | */ | |
2008 | ||
e313ab0a AJ |
2009 | /** |
2010 | * Parse wccp2_return_method and wccp2_forwarding_method options | |
72e2b394 | 2011 | * they can be '1' aka 'gre' or '2' aka 'l2' |
e313ab0a AJ |
2012 | * repesenting the integer numeric of the same. |
2013 | */ | |
2014 | void | |
2015 | parse_wccp2_method(int *method) | |
2016 | { | |
2017 | char *t; | |
2018 | ||
2019 | /* Snarf the method */ | |
2020 | if ((t = strtok(NULL, w_space)) == NULL) { | |
21ec1b94 | 2021 | debugs(80, DBG_CRITICAL, "wccp2_*_method: missing setting."); |
e313ab0a AJ |
2022 | self_destruct(); |
2023 | } | |
2024 | ||
2025 | /* update configuration if its valid */ | |
451c4786 | 2026 | if (strcmp(t, "gre") == 0 || strcmp(t, "1") == 0) { |
21ec1b94 | 2027 | *method = WCCP2_METHOD_GRE; |
451c4786 | 2028 | } else if (strcmp(t, "l2") == 0 || strcmp(t, "2") == 0) { |
21ec1b94 | 2029 | *method = WCCP2_METHOD_L2; |
e313ab0a | 2030 | } else { |
21ec1b94 | 2031 | debugs(80, DBG_CRITICAL, "wccp2_*_method: unknown setting, got " << t ); |
e313ab0a AJ |
2032 | self_destruct(); |
2033 | } | |
2034 | } | |
2035 | ||
2036 | void | |
2037 | dump_wccp2_method(StoreEntry * e, const char *label, int v) | |
2038 | { | |
26ac0430 | 2039 | switch (v) { |
451c4786 AJ |
2040 | case WCCP2_METHOD_GRE: |
2041 | storeAppendPrintf(e, "%s gre\n", label); | |
e313ab0a | 2042 | break; |
451c4786 AJ |
2043 | case WCCP2_METHOD_L2: |
2044 | storeAppendPrintf(e, "%s l2\n", label); | |
e313ab0a AJ |
2045 | break; |
2046 | default: | |
21ec1b94 | 2047 | debugs(80, DBG_CRITICAL, "FATAL: WCCPv2 configured method (" << v << ") is not valid."); |
e313ab0a AJ |
2048 | self_destruct(); |
2049 | } | |
2050 | } | |
2051 | ||
2052 | void | |
2053 | free_wccp2_method(int *v) | |
2054 | { } | |
2055 | ||
451c4786 AJ |
2056 | /** |
2057 | * Parse wccp2_assignment_method option | |
2058 | * they can be '1' aka 'hash' or '2' aka 'mask' | |
2059 | * repesenting the integer numeric of the same. | |
2060 | */ | |
2061 | void | |
72e2b394 | 2062 | parse_wccp2_amethod(int *method) |
451c4786 AJ |
2063 | { |
2064 | char *t; | |
2065 | ||
2066 | /* Snarf the method */ | |
2067 | if ((t = strtok(NULL, w_space)) == NULL) { | |
2068 | debugs(80, DBG_CRITICAL, "wccp2_assignment_method: missing setting."); | |
2069 | self_destruct(); | |
2070 | } | |
2071 | ||
2072 | /* update configuration if its valid */ | |
2073 | if (strcmp(t, "hash") == 0 || strcmp(t, "1") == 0) { | |
2074 | *method = WCCP2_ASSIGNMENT_METHOD_HASH; | |
2075 | } else if (strcmp(t, "mask") == 0 || strcmp(t, "2") == 0) { | |
2076 | *method = WCCP2_ASSIGNMENT_METHOD_MASK; | |
2077 | } else { | |
2078 | debugs(80, DBG_CRITICAL, "wccp2_assignment_method: unknown setting, got " << t ); | |
2079 | self_destruct(); | |
2080 | } | |
2081 | } | |
2082 | ||
2083 | void | |
2084 | dump_wccp2_amethod(StoreEntry * e, const char *label, int v) | |
2085 | { | |
26ac0430 | 2086 | switch (v) { |
451c4786 AJ |
2087 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
2088 | storeAppendPrintf(e, "%s hash\n", label); | |
2089 | break; | |
2090 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
2091 | storeAppendPrintf(e, "%s mask\n", label); | |
2092 | break; | |
2093 | default: | |
2094 | debugs(80, DBG_CRITICAL, "FATAL: WCCPv2 configured " << label << " (" << v << ") is not valid."); | |
2095 | self_destruct(); | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | void | |
2100 | free_wccp2_amethod(int *v) | |
2101 | { } | |
2102 | ||
0b0cfcf2 | 2103 | /* |
2104 | * Format: | |
2105 | * | |
2106 | * wccp2_service {standard|dynamic} {id} (password=password) | |
2107 | */ | |
2108 | void | |
2109 | parse_wccp2_service(void *v) | |
2110 | { | |
2111 | char *t; | |
2112 | int service = 0; | |
2113 | int service_id = 0; | |
2114 | int security_type = WCCP2_NO_SECURITY; | |
2115 | char wccp_password[WCCP2_PASSWORD_LEN + 1]; | |
2116 | ||
2117 | if (wccp2_connected == 1) { | |
bf8fe701 | 2118 | debugs(80, 1, "WCCPv2: Somehow reparsing the configuration without having shut down WCCP! Try reloading squid again."); |
0b0cfcf2 | 2119 | return; |
2120 | } | |
2121 | ||
2122 | /* Snarf the type */ | |
2123 | if ((t = strtok(NULL, w_space)) == NULL) { | |
bf8fe701 | 2124 | debugs(80, 0, "wccp2ParseServiceInfo: missing service info type (standard|dynamic)"); |
0b0cfcf2 | 2125 | self_destruct(); |
2126 | } | |
2127 | ||
2128 | if (strcmp(t, "standard") == 0) { | |
2129 | service = WCCP2_SERVICE_STANDARD; | |
2130 | } else if (strcmp(t, "dynamic") == 0) { | |
2131 | service = WCCP2_SERVICE_DYNAMIC; | |
2132 | } else { | |
bf8fe701 | 2133 | debugs(80, 0, "wccp2ParseServiceInfo: bad service info type (expected standard|dynamic, got " << t << ")"); |
0b0cfcf2 | 2134 | self_destruct(); |
2135 | } | |
2136 | ||
2137 | /* Snarf the ID */ | |
2138 | service_id = GetInteger(); | |
2139 | ||
2140 | if (service_id < 0 || service_id > 255) { | |
bf8fe701 | 2141 | debugs(80, 0, "wccp2ParseServiceInfo: service info id " << service_id << " is out of range (0..255)"); |
0b0cfcf2 | 2142 | self_destruct(); |
2143 | } | |
2144 | ||
2145 | memset(wccp_password, 0, sizeof(wccp_password)); | |
2146 | /* Handle password, if any */ | |
2147 | ||
2148 | if ((t = strtok(NULL, w_space)) != NULL) { | |
2149 | if (strncmp(t, "password=", 9) == 0) { | |
2150 | security_type = WCCP2_MD5_SECURITY; | |
2151 | strncpy(wccp_password, t + 9, WCCP2_PASSWORD_LEN); | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | /* Create a placeholder service record */ | |
2156 | wccp2_add_service_list(service, service_id, 0, 0, 0, empty_portlist, security_type, wccp_password); | |
2157 | } | |
2158 | ||
2159 | void | |
2160 | dump_wccp2_service(StoreEntry * e, const char *label, void *v) | |
2161 | { | |
2162 | ||
2163 | struct wccp2_service_list_t *srv; | |
2164 | srv = wccp2_service_list_head; | |
2165 | ||
2166 | while (srv != NULL) { | |
bf8fe701 | 2167 | debugs(80, 3, "dump_wccp2_service: id " << srv->info.service_id << ", type " << srv->info.service); |
0b0cfcf2 | 2168 | storeAppendPrintf(e, "%s %s %d", label, |
2169 | (srv->info.service == WCCP2_SERVICE_DYNAMIC) ? "dynamic" : "standard", | |
2170 | srv->info.service_id); | |
2171 | ||
2172 | if (srv->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
2173 | storeAppendPrintf(e, " %s", srv->wccp_password); | |
2174 | } | |
2175 | ||
c208fd0e | 2176 | storeAppendPrintf(e, "\n"); |
2177 | ||
0b0cfcf2 | 2178 | srv = srv->next; |
2179 | } | |
2180 | } | |
2181 | ||
2182 | void | |
2183 | free_wccp2_service(void *v) | |
2184 | {} | |
2185 | ||
2186 | int | |
2187 | check_null_wccp2_service(void *v) | |
2188 | { | |
2189 | return !wccp2_service_list_head; | |
2190 | } | |
2191 | ||
2192 | /* | |
2193 | * Format: | |
2194 | * | |
2195 | * wccp2_service_info {id} stuff.. | |
2196 | * | |
2197 | * Where stuff is: | |
2198 | * | |
2199 | * + flags=flag,flag,flag.. | |
2200 | * + proto=protocol (tcp|udp) | |
2201 | * + ports=port,port,port (up to a max of 8) | |
2202 | * + priority=priority (0->255) | |
2203 | * | |
2204 | * The flags here are: | |
2205 | * src_ip_hash, dst_ip_hash, source_port_hash, dst_port_hash, ports_defined, | |
2206 | * ports_source, src_ip_alt_hash, dst_ip_alt_hash, src_port_alt_hash, dst_port_alt_hash | |
2207 | */ | |
2208 | static int | |
2209 | parse_wccp2_service_flags(char *flags) | |
2210 | { | |
2211 | char *tmp, *tmp2; | |
2212 | char *flag; | |
2213 | int retflag = 0; | |
2214 | ||
2215 | if (!flags) { | |
2216 | return 0; | |
2217 | } | |
2218 | ||
2219 | tmp = xstrdup(flags); | |
2220 | tmp2 = tmp; | |
2221 | ||
2222 | flag = strsep(&tmp2, ","); | |
2223 | ||
2224 | while (flag) { | |
2225 | if (strcmp(flag, "src_ip_hash") == 0) { | |
2226 | retflag |= WCCP2_SERVICE_SRC_IP_HASH; | |
2227 | } else if (strcmp(flag, "dst_ip_hash") == 0) { | |
2228 | retflag |= WCCP2_SERVICE_DST_IP_HASH; | |
2229 | } else if (strcmp(flag, "source_port_hash") == 0) { | |
b7d249f9 | 2230 | retflag |= WCCP2_SERVICE_SRC_PORT_HASH; |
0b0cfcf2 | 2231 | } else if (strcmp(flag, "dst_port_hash") == 0) { |
2232 | retflag |= WCCP2_SERVICE_DST_PORT_HASH; | |
2233 | } else if (strcmp(flag, "ports_source") == 0) { | |
2234 | retflag |= WCCP2_SERVICE_PORTS_SOURCE; | |
2235 | } else if (strcmp(flag, "src_ip_alt_hash") == 0) { | |
2236 | retflag |= WCCP2_SERVICE_SRC_IP_ALT_HASH; | |
2237 | } else if (strcmp(flag, "dst_ip_alt_hash") == 0) { | |
2238 | retflag |= WCCP2_SERVICE_DST_IP_ALT_HASH; | |
2239 | } else if (strcmp(flag, "src_port_alt_hash") == 0) { | |
2240 | retflag |= WCCP2_SERVICE_SRC_PORT_ALT_HASH; | |
2241 | } else if (strcmp(flag, "dst_port_alt_hash") == 0) { | |
2242 | retflag |= WCCP2_SERVICE_DST_PORT_ALT_HASH; | |
2243 | } else { | |
2244 | fatalf("Unknown wccp2 service flag: %s\n", flag); | |
2245 | } | |
2246 | ||
2247 | flag = strsep(&tmp2, ","); | |
2248 | } | |
2249 | ||
2250 | xfree(tmp); | |
2251 | return retflag; | |
2252 | } | |
2253 | ||
2254 | static void | |
2255 | parse_wccp2_service_ports(char *options, int portlist[]) | |
2256 | { | |
2257 | int i = 0; | |
2258 | int p; | |
2259 | char *tmp, *tmp2, *port, *end; | |
2260 | ||
2261 | if (!options) { | |
2262 | return; | |
2263 | } | |
2264 | ||
2265 | tmp = xstrdup(options); | |
2266 | tmp2 = tmp; | |
2267 | ||
2268 | port = strsep(&tmp2, ","); | |
2269 | ||
2270 | while (port && i < WCCP2_NUMPORTS) { | |
2271 | p = strtol(port, &end, 0); | |
2272 | ||
2273 | if (p < 1 || p > 65535) { | |
2274 | fatalf("parse_wccp2_service_ports: port value '%s' isn't valid (1..65535)\n", port); | |
2275 | } | |
2276 | ||
2277 | portlist[i] = p; | |
2278 | i++; | |
2279 | port = strsep(&tmp2, ","); | |
2280 | } | |
2281 | ||
2282 | if (i == 8) { | |
2283 | fatalf("parse_wccp2_service_ports: too many ports (maximum: 8) in list '%s'\n", options); | |
2284 | } | |
2285 | ||
2286 | xfree(tmp); | |
2287 | } | |
2288 | ||
2289 | void | |
2290 | parse_wccp2_service_info(void *v) | |
2291 | { | |
2292 | char *t, *end; | |
2293 | int service_id = 0; | |
2294 | int flags = 0; | |
2295 | int portlist[WCCP2_NUMPORTS]; | |
2296 | int protocol = -1; /* IPPROTO_TCP | IPPROTO_UDP */ | |
2297 | ||
2298 | struct wccp2_service_list_t *srv; | |
2299 | int priority = -1; | |
2300 | ||
2301 | if (wccp2_connected == 1) { | |
bf8fe701 | 2302 | debugs(80, 1, "WCCPv2: Somehow reparsing the configuration without having shut down WCCP! Try reloading squid again."); |
0b0cfcf2 | 2303 | return; |
2304 | } | |
2305 | ||
bf8fe701 | 2306 | debugs(80, 5, "parse_wccp2_service_info: called"); |
a302ad3c | 2307 | memset(portlist, 0, sizeof(portlist)); |
0b0cfcf2 | 2308 | /* First argument: id */ |
2309 | service_id = GetInteger(); | |
2310 | ||
2311 | if (service_id < 0 || service_id > 255) { | |
bf8fe701 | 2312 | debugs(80, 1, "parse_wccp2_service_info: invalid service id " << service_id << " (must be between 0 .. 255)"); |
0b0cfcf2 | 2313 | self_destruct(); |
2314 | } | |
2315 | ||
2316 | /* Next: find the (hopefully!) existing service */ | |
2317 | srv = wccp2_get_service_by_id(WCCP2_SERVICE_DYNAMIC, service_id); | |
2318 | ||
2319 | if (srv == NULL) { | |
2320 | fatalf("parse_wccp2_service_info: unknown dynamic service id %d: you need to define it using wccp2_service (and make sure you wish to configure it as a dynamic service.)\n", service_id); | |
2321 | } | |
2322 | ||
2323 | /* Next: loop until we don't have any more tokens */ | |
2324 | while ((t = strtok(NULL, w_space)) != NULL) { | |
2325 | if (strncmp(t, "flags=", 6) == 0) { | |
2326 | /* XXX eww, string pointer math */ | |
2327 | flags = parse_wccp2_service_flags(t + 6); | |
2328 | } else if (strncmp(t, "ports=", 6) == 0) { | |
2329 | parse_wccp2_service_ports(t + 6, portlist); | |
2330 | flags |= WCCP2_SERVICE_PORTS_DEFINED; | |
2331 | } else if (strncmp(t, "protocol=tcp", 12) == 0) { | |
2332 | protocol = IPPROTO_TCP; | |
2333 | } else if (strncmp(t, "protocol=udp", 12) == 0) { | |
2334 | protocol = IPPROTO_UDP; | |
2335 | } else if (strncmp(t, "protocol=", 9) == 0) { | |
2336 | fatalf("parse_wccp2_service_info: id %d: unknown protocol (%s) - must be tcp or udp!\n", service_id, t); | |
2337 | } else if (strncmp(t, "priority=", 9) == 0) { | |
2338 | priority = strtol(t + 9, &end, 0); | |
2339 | ||
2340 | if (priority < 0 || priority > 255) { | |
2341 | fatalf("parse_wccp2_service_info: id %d: %s out of range (0..255)!\n", service_id, t); | |
2342 | } | |
2343 | } else { | |
2344 | fatalf("parse_wccp2_service_info: id %d: unknown option '%s'\n", service_id, t); | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | /* Check everything is set */ | |
2349 | if (priority == -1) { | |
2350 | fatalf("parse_wccp2_service_info: service %d: no priority defined (valid: 0..255)!\n", service_id); | |
2351 | } | |
2352 | ||
2353 | if (protocol == -1) { | |
2354 | fatalf("parse_wccp2_service_info: service %d: no protocol defined (valid: tcp or udp)!\n", service_id); | |
2355 | } | |
2356 | ||
2357 | if (!(flags & WCCP2_SERVICE_PORTS_DEFINED)) { | |
2358 | fatalf("parse_wccp2_service_info: service %d: no ports defined!\n", service_id); | |
2359 | } | |
2360 | ||
2361 | /* rightio! now we can update */ | |
2362 | wccp2_update_service(srv, WCCP2_SERVICE_DYNAMIC, service_id, priority, | |
2363 | protocol, flags, portlist); | |
2364 | ||
2365 | /* Done! */ | |
2366 | } | |
2367 | ||
2368 | void | |
2369 | dump_wccp2_service_info(StoreEntry * e, const char *label, void *v) | |
2370 | { | |
2371 | char comma; | |
2372 | ||
2373 | struct wccp2_service_list_t *srv; | |
2374 | int flags; | |
2375 | srv = wccp2_service_list_head; | |
2376 | ||
2377 | while (srv != NULL) { | |
bf8fe701 | 2378 | debugs(80, 3, "dump_wccp2_service_info: id " << srv->info.service_id << " (type " << srv->info.service << ")"); |
0b0cfcf2 | 2379 | |
2380 | /* We don't need to spit out information for standard services */ | |
2381 | ||
2382 | if (srv->info.service == WCCP2_SERVICE_STANDARD) { | |
bf8fe701 | 2383 | debugs(80, 3, "dump_wccp2_service_info: id " << srv->info.service_id << ": standard service, not dumping info"); |
2384 | ||
0b0cfcf2 | 2385 | /* XXX eww */ |
2386 | srv = srv->next; | |
2387 | continue; | |
2388 | } | |
2389 | ||
2390 | storeAppendPrintf(e, "%s %d", label, srv->info.service_id); | |
2391 | ||
2392 | /* priority */ | |
2393 | storeAppendPrintf(e, " priority=%d", srv->info.service_priority); | |
2394 | ||
2395 | /* flags */ | |
2396 | flags = ntohl(srv->info.service_flags); | |
2397 | ||
2398 | if (flags != 0) { | |
2399 | comma = 0; | |
2400 | storeAppendPrintf(e, " flags="); | |
2401 | ||
2402 | if (flags & WCCP2_SERVICE_SRC_IP_HASH) { | |
2403 | storeAppendPrintf(e, "%ssrc_ip_hash", comma ? "," : ""); | |
2404 | comma = 1; | |
2405 | } | |
2406 | ||
2407 | if (flags & WCCP2_SERVICE_DST_IP_HASH) { | |
2408 | storeAppendPrintf(e, "%sdst_ip_hash", comma ? "," : ""); | |
2409 | comma = 1; | |
2410 | } | |
2411 | ||
b7d249f9 | 2412 | if (flags & WCCP2_SERVICE_SRC_PORT_HASH) { |
0b0cfcf2 | 2413 | storeAppendPrintf(e, "%ssource_port_hash", comma ? "," : ""); |
2414 | comma = 1; | |
2415 | } | |
2416 | ||
2417 | if (flags & WCCP2_SERVICE_DST_PORT_HASH) { | |
2418 | storeAppendPrintf(e, "%sdst_port_hash", comma ? "," : ""); | |
2419 | comma = 1; | |
2420 | } | |
2421 | ||
2422 | if (flags & WCCP2_SERVICE_PORTS_DEFINED) { | |
2423 | storeAppendPrintf(e, "%sports_defined", comma ? "," : ""); | |
2424 | comma = 1; | |
2425 | } | |
2426 | ||
2427 | if (flags & WCCP2_SERVICE_PORTS_SOURCE) { | |
2428 | storeAppendPrintf(e, "%sports_source", comma ? "," : ""); | |
2429 | comma = 1; | |
2430 | } | |
2431 | ||
2432 | if (flags & WCCP2_SERVICE_SRC_IP_ALT_HASH) { | |
2433 | storeAppendPrintf(e, "%ssrc_ip_alt_hash", comma ? "," : ""); | |
2434 | comma = 1; | |
2435 | } | |
2436 | ||
2437 | if (flags & WCCP2_SERVICE_DST_IP_ALT_HASH) { | |
2438 | storeAppendPrintf(e, "%ssrc_ip_alt_hash", comma ? "," : ""); | |
2439 | comma = 1; | |
2440 | } | |
2441 | ||
2442 | if (flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH) { | |
2443 | storeAppendPrintf(e, "%ssrc_port_alt_hash", comma ? "," : ""); | |
2444 | comma = 1; | |
2445 | } | |
2446 | ||
2447 | if (flags & WCCP2_SERVICE_DST_PORT_ALT_HASH) { | |
2448 | storeAppendPrintf(e, "%sdst_port_alt_hash", comma ? "," : ""); | |
2449 | comma = 1; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | /* ports */ | |
2454 | comma = 0; | |
2455 | ||
2456 | if (srv->info.port0 != 0) { | |
2457 | storeAppendPrintf(e, "%s%d", comma ? "," : " ports=", ntohs(srv->info.port0)); | |
2458 | comma = 1; | |
2459 | } | |
2460 | ||
2461 | if (srv->info.port1 != 0) { | |
2462 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port1)); | |
2463 | comma = 1; | |
2464 | } | |
2465 | ||
2466 | if (srv->info.port2 != 0) { | |
2467 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port2)); | |
2468 | comma = 1; | |
2469 | } | |
2470 | ||
2471 | if (srv->info.port3 != 0) { | |
2472 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port3)); | |
2473 | comma = 1; | |
2474 | } | |
2475 | ||
2476 | if (srv->info.port4 != 0) { | |
2477 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port4)); | |
2478 | comma = 1; | |
2479 | } | |
2480 | ||
2481 | if (srv->info.port5 != 0) { | |
2482 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port5)); | |
2483 | comma = 1; | |
2484 | } | |
2485 | ||
2486 | if (srv->info.port6 != 0) { | |
2487 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port6)); | |
2488 | comma = 1; | |
2489 | } | |
2490 | ||
2491 | if (srv->info.port7 != 0) { | |
2492 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port7)); | |
2493 | comma = 1; | |
2494 | } | |
2495 | ||
2496 | /* protocol */ | |
2497 | storeAppendPrintf(e, " protocol=%s", (srv->info.service_protocol == IPPROTO_TCP) ? "tcp" : "udp"); | |
2498 | ||
2499 | storeAppendPrintf(e, "\n"); | |
2500 | ||
2501 | srv = srv->next; | |
2502 | } | |
2503 | } | |
2504 | ||
264096e2 | 2505 | /* Sort the cache list by doing a "selection sort" by IP address */ |
2506 | static void | |
2507 | wccp2SortCacheList(struct wccp2_cache_list_t *head) | |
2508 | { | |
2509 | struct wccp2_cache_list_t tmp; | |
2510 | struct wccp2_cache_list_t *this_item; | |
2511 | struct wccp2_cache_list_t *find_item; | |
2512 | struct wccp2_cache_list_t *next_lowest; | |
2513 | ||
2514 | /* Go through each position in the list one at a time */ | |
2515 | for (this_item = head; this_item->next; this_item = this_item->next) { | |
26ac0430 AJ |
2516 | /* Find the item with the lowest IP */ |
2517 | next_lowest = this_item; | |
2518 | ||
2519 | for (find_item = this_item; find_item->next; find_item = find_item->next) { | |
2520 | if (find_item->cache_ip.s_addr < next_lowest->cache_ip.s_addr) { | |
2521 | next_lowest = find_item; | |
2522 | } | |
2523 | } | |
2524 | /* Swap if we need to */ | |
2525 | if (next_lowest != this_item) { | |
2526 | /* First make a copy of the current item */ | |
2527 | memcpy(&tmp, this_item, sizeof(struct wccp2_cache_list_t)); | |
2528 | ||
2529 | /* Next update the pointers to maintain the linked list */ | |
2530 | tmp.next = next_lowest->next; | |
2531 | next_lowest->next = this_item->next; | |
2532 | ||
2533 | /* Finally copy the updated items to their correct location */ | |
2534 | memcpy(this_item, next_lowest, sizeof(struct wccp2_cache_list_t)); | |
2535 | memcpy(next_lowest, &tmp, sizeof(struct wccp2_cache_list_t)); | |
2536 | } | |
264096e2 | 2537 | } |
2538 | } | |
2539 | ||
0b0cfcf2 | 2540 | void |
2541 | free_wccp2_service_info(void *v) | |
2542 | {} | |
2543 | ||
2544 | #endif /* USE_WCCPv2 */ |