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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 | |
582c2af2 | 33 | #include "squid.h" |
c898ced1 AJ |
34 | |
35 | #if USE_WCCPv2 | |
36 | ||
0b0cfcf2 | 37 | #include "comm.h" |
f9b72e0c | 38 | #include "comm/Connection.h" |
d841c88d | 39 | #include "comm/Loops.h" |
27bc2077 | 40 | #include "compat/strsep.h" |
a553a5a3 | 41 | #include "event.h" |
96d89ea0 | 42 | #include "ip/Address.h" |
582c2af2 | 43 | #include "md5.h" |
0b0cfcf2 | 44 | #include "Parsing.h" |
582c2af2 | 45 | #include "protos.h" |
a553a5a3 | 46 | #include "Store.h" |
bef81ea5 | 47 | #include "SwapDir.h" |
0b0cfcf2 | 48 | |
5fefeec1 | 49 | #if HAVE_NETDB_H |
0b0cfcf2 | 50 | #include <netdb.h> |
5fefeec1 | 51 | #endif |
0b0cfcf2 | 52 | |
53 | #define WCCP_PORT 2048 | |
0b0cfcf2 | 54 | #define WCCP_RESPONSE_SIZE 12448 |
0b0cfcf2 | 55 | #define WCCP_BUCKETS 256 |
56 | ||
0b0cfcf2 | 57 | static int theWccp2Connection = -1; |
58 | static int wccp2_connected = 0; | |
59 | ||
60 | static PF wccp2HandleUdp; | |
61 | static EVH wccp2HereIam; | |
62 | static EVH wccp2AssignBuckets; | |
63 | ||
64 | /* KDW WCCP V2 */ | |
c1f55201 | 65 | |
c898ced1 AJ |
66 | #define WCCP2_HASH_ASSIGNMENT 0x00 |
67 | #define WCCP2_MASK_ASSIGNMENT 0x01 | |
0b0cfcf2 | 68 | |
c898ced1 AJ |
69 | #define WCCP2_NONE_SECURITY_LEN 0 |
70 | #define WCCP2_MD5_SECURITY_LEN 16 | |
0b0cfcf2 | 71 | |
c898ced1 AJ |
72 | /* Useful defines */ |
73 | #define WCCP2_NUMPORTS 8 | |
74 | #define WCCP2_PASSWORD_LEN 8 | |
0b0cfcf2 | 75 | |
c898ced1 AJ |
76 | /* WCCPv2 Pakcet format structures */ |
77 | /* Defined in draft-wilson-wccp-v2-12-oct-2001.txt */ | |
0b0cfcf2 | 78 | |
c898ced1 AJ |
79 | /** \interface WCCPv2_Protocol |
80 | * Generic header struct | |
81 | */ | |
82 | struct wccp2_item_header_t { | |
83 | uint16_t type; | |
84 | uint16_t length; | |
85 | }; | |
0b0cfcf2 | 86 | |
c898ced1 AJ |
87 | /* item type values */ |
88 | #define WCCP2_SECURITY_INFO 0 | |
89 | #define WCCP2_SERVICE_INFO 1 | |
90 | #define WCCP2_ROUTER_ID_INFO 2 | |
91 | #define WCCP2_WC_ID_INFO 3 | |
92 | #define WCCP2_RTR_VIEW_INFO 4 | |
0b0cfcf2 | 93 | #define WCCP2_WC_VIEW_INFO 5 |
0b0cfcf2 | 94 | #define WCCP2_REDIRECT_ASSIGNMENT 6 |
0b0cfcf2 | 95 | #define WCCP2_QUERY_INFO 7 |
0b0cfcf2 | 96 | #define WCCP2_CAPABILITY_INFO 8 |
b7d249f9 | 97 | #define WCCP2_ALT_ASSIGNMENT 13 |
b7d249f9 | 98 | #define WCCP2_ASSIGN_MAP 14 |
b7d249f9 | 99 | #define WCCP2_COMMAND_EXTENSION 15 |
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 | |
c898ced1 AJ |
119 | /** \interface WCCPv2_Protocol |
120 | * Sect 5.6.1 Security Info Component | |
121 | * | |
122 | * Basic security Header. Matches "no security" case exactly. | |
123 | */ | |
26ac0430 | 124 | struct wccp2_security_none_t { |
0b0cfcf2 | 125 | uint16_t security_type; |
126 | uint16_t security_length; | |
127 | uint32_t security_option; | |
128 | }; | |
129 | ||
c898ced1 AJ |
130 | /* security options */ |
131 | #define WCCP2_NO_SECURITY 0 | |
132 | #define WCCP2_MD5_SECURITY 1 | |
133 | ||
c898ced1 AJ |
134 | /** \interface WCCPv2_Protocol |
135 | * Sect 5.6.1 Security Info Component | |
136 | * | |
137 | * Extended security section. Matches "MD5 security" type exactly. | |
138 | * Including the security header. | |
139 | */ | |
26ac0430 | 140 | struct wccp2_security_md5_t { |
0b0cfcf2 | 141 | uint16_t security_type; |
142 | uint16_t security_length; | |
143 | uint32_t security_option; | |
144 | uint8_t security_implementation[WCCP2_MD5_SECURITY_LEN]; | |
145 | }; | |
146 | ||
147 | /* Service info struct */ | |
148 | ||
c898ced1 AJ |
149 | /** \interface WCCPv2_Protocol |
150 | * Sect 5.6.2 Service Info Component | |
151 | */ | |
26ac0430 | 152 | struct wccp2_service_info_t { |
0b0cfcf2 | 153 | uint16_t service_type; |
154 | uint16_t service_length; | |
155 | uint8_t service; | |
156 | uint8_t service_id; | |
157 | uint8_t service_priority; | |
158 | uint8_t service_protocol; | |
159 | uint32_t service_flags; | |
160 | uint16_t port0; | |
161 | uint16_t port1; | |
162 | uint16_t port2; | |
163 | uint16_t port3; | |
164 | uint16_t port4; | |
165 | uint16_t port5; | |
166 | uint16_t port6; | |
167 | uint16_t port7; | |
168 | }; | |
c898ced1 AJ |
169 | /* services */ |
170 | #define WCCP2_SERVICE_STANDARD 0 | |
171 | #define WCCP2_SERVICE_DYNAMIC 1 | |
0b0cfcf2 | 172 | |
c898ced1 AJ |
173 | /* service IDs */ |
174 | #define WCCP2_SERVICE_ID_HTTP 0x00 | |
175 | ||
176 | /* service flags */ | |
177 | #define WCCP2_SERVICE_SRC_IP_HASH 0x1 | |
178 | #define WCCP2_SERVICE_DST_IP_HASH 0x2 | |
179 | #define WCCP2_SERVICE_SRC_PORT_HASH 0x4 | |
180 | #define WCCP2_SERVICE_DST_PORT_HASH 0x8 | |
181 | #define WCCP2_SERVICE_PORTS_DEFINED 0x10 | |
182 | #define WCCP2_SERVICE_PORTS_SOURCE 0x20 | |
183 | #define WCCP2_SERVICE_SRC_IP_ALT_HASH 0x100 | |
184 | #define WCCP2_SERVICE_DST_IP_ALT_HASH 0x200 | |
185 | #define WCCP2_SERVICE_SRC_PORT_ALT_HASH 0x400 | |
186 | #define WCCP2_SERVICE_DST_PORT_ALT_HASH 0x800 | |
187 | ||
c898ced1 AJ |
188 | /* TODO the following structures need to be re-defined for correct full operation. |
189 | wccp2_cache_identity_element needs to be merged as a sub-struct of | |
190 | wccp2_identity_info_t (identity_type); which frees up the identifty info | |
191 | structures so mask_assigment_data_element can become variable length | |
192 | and cope with multiple fail-over caches hanging off one router. | |
193 | */ | |
194 | ||
195 | /** \interface WCCPv2_Protocol | |
196 | * Sect 5.7.2 Web-Cache Identity Element | |
197 | */ | |
26ac0430 | 198 | struct wccp2_cache_identity_info_t { |
cc192b50 | 199 | struct in_addr addr; |
0b0cfcf2 | 200 | uint16_t hash_revision; |
85442144 | 201 | uint16_t bits; |
c898ced1 AJ |
202 | //#define WCCP2_HASH_ASSIGNMENT_DATA 0x0 |
203 | ||
af6a12ee | 204 | /* 5.7.2 Hash Assignment Data Element */ |
c898ced1 | 205 | char buckets[32]; /* Draft indicates 8x 32-bit buckets but it's just a mask so doesn't matter how we define. */ |
0b0cfcf2 | 206 | uint16_t weight; |
207 | uint16_t status; | |
208 | }; | |
209 | ||
c898ced1 AJ |
210 | /** \interface WCCPv2_Protocol |
211 | * Sect 5.6.4 Web-Cache Identity Info Component | |
212 | */ | |
26ac0430 | 213 | struct wccp2_identity_info_t { |
0b0cfcf2 | 214 | uint16_t cache_identity_type; |
215 | uint16_t cache_identity_length; | |
216 | ||
217 | struct wccp2_cache_identity_info_t cache_identity; | |
218 | }; | |
219 | ||
220 | static struct wccp2_identity_info_t wccp2_identity_info; | |
221 | ||
c898ced1 AJ |
222 | /** \interface WCCPv2_Protocol |
223 | * Sect 5.7.7 Mask Element | |
224 | */ | |
225 | struct wccp2_mask_element_t { | |
b7d249f9 | 226 | uint32_t source_ip_mask; |
227 | uint32_t dest_ip_mask; | |
228 | uint16_t source_port_mask; | |
229 | uint16_t dest_port_mask; | |
c898ced1 | 230 | uint32_t number_values; |
b7d249f9 | 231 | }; |
232 | ||
c898ced1 AJ |
233 | /** \interface WCCPv2_Protocol |
234 | * Sect 5.7.2 Web-Cache Identity Element | |
235 | */ | |
236 | struct wccp2_cache_mask_identity_info_t { | |
237 | struct in_addr addr; | |
238 | uint16_t hash_revision; | |
239 | uint16_t bits; | |
85442144 | 240 | #define WCCP2_MASK_ASSIGNMENT_DATA (0x2) |
c898ced1 | 241 | |
af6a12ee AJ |
242 | /* Sect 5.7.2 Mask Assignment Data Element |
243 | * | |
244 | * NP: draft specifies a variable-length set of keys here. | |
245 | * the following fields only matche the special case Squid sends outbound (single-cache). | |
246 | */ | |
247 | uint32_t mask_element_count; | |
c898ced1 | 248 | |
af6a12ee AJ |
249 | /* Sect 5.7.6 Mask/Value Set Element */ |
250 | /* special case: single mask element. no values. */ | |
c898ced1 AJ |
251 | struct wccp2_mask_element_t mask; |
252 | ||
af6a12ee | 253 | /* Sect 5.7.2 Mask Assignment Data Element */ |
c898ced1 AJ |
254 | uint16_t weight; |
255 | uint16_t status; | |
256 | }; | |
257 | ||
258 | /** \interface WCCPv2_Protocol | |
259 | * Sect 5.6.4 Web-Cache Identity Info Component | |
260 | */ | |
26ac0430 | 261 | struct wccp2_mask_identity_info_t { |
b7d249f9 | 262 | uint16_t cache_identity_type; |
263 | uint16_t cache_identity_length; | |
264 | ||
265 | struct wccp2_cache_mask_identity_info_t cache_identity; | |
266 | }; | |
267 | ||
268 | static struct wccp2_mask_identity_info_t wccp2_mask_identity_info; | |
269 | ||
c898ced1 AJ |
270 | /** \interface WCCPv2_Protocol |
271 | * Sect 5.6.5 Router View Info Component | |
272 | * Sect 5.6.6 Web Cache View Info Component | |
273 | * | |
274 | * first three fields. (shared by both view components) | |
275 | */ | |
26ac0430 | 276 | struct wccp2_cache_view_header_t { |
0b0cfcf2 | 277 | uint16_t cache_view_type; |
278 | uint16_t cache_view_length; | |
279 | uint32_t cache_view_version; | |
280 | }; | |
281 | ||
282 | static struct wccp2_cache_view_header_t wccp2_cache_view_header; | |
283 | ||
e041b6d2 | 284 | /// \interface WCCPv2_Protocol |
c898ced1 | 285 | /* NP: special-case 5.6.5 or 5.6.6 * View Info when no routers or caches are advertised? */ |
26ac0430 | 286 | struct wccp2_cache_view_info_t { |
0b0cfcf2 | 287 | uint32_t num_routers; |
288 | uint32_t num_caches; | |
289 | }; | |
290 | ||
291 | static struct wccp2_cache_view_info_t wccp2_cache_view_info; | |
292 | ||
c898ced1 AJ |
293 | /** \interface WCCPv2_Protocol |
294 | * Sect 5.7.1 Router ID Element | |
295 | */ | |
26ac0430 | 296 | struct wccp2_router_id_element_t { |
cc192b50 | 297 | struct in_addr router_address; |
0b0cfcf2 | 298 | uint32_t received_id; |
299 | }; | |
300 | ||
301 | static struct wccp2_router_id_element_t wccp2_router_id_element; | |
302 | ||
bd8d3feb | 303 | /** \interface WCCPv2_Protocol |
c898ced1 AJ |
304 | * Sect 5.6.9 Capabilities Info Component |
305 | */ | |
26ac0430 | 306 | struct wccp2_capability_info_header_t { |
0b0cfcf2 | 307 | uint16_t capability_info_type; |
308 | uint16_t capability_info_length; | |
c898ced1 | 309 | /* dynamic length capabilities list */ |
0b0cfcf2 | 310 | }; |
311 | ||
312 | static struct wccp2_capability_info_header_t wccp2_capability_info_header; | |
313 | ||
c898ced1 AJ |
314 | /** \interface WCCPv2_Protocol |
315 | * 5.7.5 Capability Element | |
316 | */ | |
26ac0430 | 317 | struct wccp2_capability_element_t { |
0b0cfcf2 | 318 | uint16_t capability_type; |
319 | uint16_t capability_length; | |
320 | uint32_t capability_value; | |
321 | }; | |
0b0cfcf2 | 322 | static struct wccp2_capability_element_t wccp2_capability_element; |
323 | ||
c898ced1 AJ |
324 | /* capability types */ |
325 | #define WCCP2_CAPABILITY_FORWARDING_METHOD 0x01 | |
326 | #define WCCP2_CAPABILITY_ASSIGNMENT_METHOD 0x02 | |
327 | #define WCCP2_CAPABILITY_RETURN_METHOD 0x03 | |
43f3d687 AJ |
328 | // 0x04 ?? - advertised by a 4507 (ios v15.1) Cisco switch |
329 | // 0x05 ?? - advertised by a 4507 (ios v15.1) Cisco switch | |
b7d249f9 | 330 | |
c898ced1 AJ |
331 | /* capability values */ |
332 | #define WCCP2_METHOD_GRE 0x00000001 | |
333 | #define WCCP2_METHOD_L2 0x00000002 | |
af6a12ee | 334 | /* when type=WCCP2_CAPABILITY_FORWARDING_METHOD */ |
c898ced1 AJ |
335 | #define WCCP2_FORWARDING_METHOD_GRE WCCP2_METHOD_GRE |
336 | #define WCCP2_FORWARDING_METHOD_L2 WCCP2_METHOD_L2 | |
af6a12ee | 337 | /* when type=WCCP2_CAPABILITY_ASSIGNMENT_METHOD */ |
c898ced1 AJ |
338 | #define WCCP2_ASSIGNMENT_METHOD_HASH 0x00000001 |
339 | #define WCCP2_ASSIGNMENT_METHOD_MASK 0x00000002 | |
af6a12ee | 340 | /* when type=WCCP2_CAPABILITY_RETURN_METHOD */ |
c898ced1 AJ |
341 | #define WCCP2_PACKET_RETURN_METHOD_GRE WCCP2_METHOD_GRE |
342 | #define WCCP2_PACKET_RETURN_METHOD_L2 WCCP2_METHOD_L2 | |
b7d249f9 | 343 | |
c898ced1 AJ |
344 | /** \interface WCCPv2_Protocol |
345 | * 5.7.8 Value Element | |
346 | */ | |
26ac0430 | 347 | struct wccp2_value_element_t { |
b7d249f9 | 348 | uint32_t source_ip_value; |
349 | uint32_t dest_ip_value; | |
350 | uint16_t source_port_value; | |
351 | uint16_t dest_port_value; | |
352 | ||
cc192b50 | 353 | struct in_addr cache_ip; |
b7d249f9 | 354 | }; |
0b0cfcf2 | 355 | |
356 | /* RECEIVED PACKET STRUCTURE */ | |
357 | ||
c898ced1 AJ |
358 | /** \interface WCCPv2_Protocol |
359 | * 5.2 'I See You' Message | |
360 | */ | |
26ac0430 | 361 | struct wccp2_i_see_you_t { |
0b0cfcf2 | 362 | uint32_t type; |
363 | uint16_t version; | |
364 | uint16_t length; | |
365 | char data[WCCP_RESPONSE_SIZE]; | |
366 | }; | |
367 | ||
368 | static struct wccp2_i_see_you_t wccp2_i_see_you; | |
369 | ||
c898ced1 AJ |
370 | /** \interface WCCPv2_Protocol |
371 | * 5.7.4 Router Assignment Element | |
372 | */ | |
26ac0430 | 373 | struct wccp2_router_assign_element_t { |
cc192b50 | 374 | struct in_addr router_address; |
0b0cfcf2 | 375 | uint32_t received_id; |
376 | uint32_t change_number; | |
377 | }; | |
378 | ||
0b0cfcf2 | 379 | /* Router identity struct */ |
380 | ||
c898ced1 AJ |
381 | /** \interface WCCPv2_Protocol |
382 | * 5.6.3 Router Identity Info Component (partial) | |
383 | */ | |
26ac0430 | 384 | struct router_identity_info_t { |
0b0cfcf2 | 385 | |
386 | struct wccp2_item_header_t header; | |
387 | ||
388 | struct wccp2_router_id_element_t router_id_element; | |
389 | ||
2adffc6f | 390 | struct in_addr router_address; |
0b0cfcf2 | 391 | uint32_t number_caches; |
c898ced1 | 392 | /* dynamic list of cache IP addresses */ |
0b0cfcf2 | 393 | }; |
394 | ||
b7d249f9 | 395 | /* The received packet for a mask assignment is unusual */ |
396 | ||
c898ced1 AJ |
397 | /** \interface WCCPv2_Protocol |
398 | * Sect 5.7.7 Mask Element ??? | |
399 | * see code below. apparently the supposed IP address at position num1 can be equal to 3. | |
400 | */ | |
26ac0430 | 401 | struct cache_mask_info_t { |
cc192b50 | 402 | struct in_addr addr; |
b7d249f9 | 403 | uint32_t num1; |
404 | uint32_t num2; | |
405 | uint32_t num3; | |
406 | }; | |
407 | ||
c898ced1 AJ |
408 | /** \interface WCCPv2_Protocol |
409 | * 5.7.3 Assignment Key Element | |
410 | */ | |
26ac0430 | 411 | struct assignment_key_t { |
cc192b50 | 412 | struct in_addr master_ip; |
0b0cfcf2 | 413 | uint32_t master_number; |
414 | }; | |
415 | ||
c898ced1 AJ |
416 | /** \interface WCCPv2_Protocol |
417 | * 5.6.5 Router View Info Component (first three fields) | |
418 | */ | |
26ac0430 | 419 | struct router_view_t { |
0b0cfcf2 | 420 | struct wccp2_item_header_t header; |
421 | uint32_t change_number; | |
0b0cfcf2 | 422 | struct assignment_key_t assignment_key; |
c898ced1 | 423 | /* dynamic lists of routers and caches elided */ |
0b0cfcf2 | 424 | }; |
425 | ||
0b0cfcf2 | 426 | /* Lists used to keep track of caches, routers and services */ |
427 | ||
e041b6d2 | 428 | /// \interface WCCPv2_Protocol |
26ac0430 | 429 | struct wccp2_cache_list_t { |
0b0cfcf2 | 430 | |
cc192b50 | 431 | struct in_addr cache_ip; |
0b0cfcf2 | 432 | |
f16fbc82 | 433 | int weight; |
434 | ||
0b0cfcf2 | 435 | struct wccp2_cache_list_t *next; |
436 | }; | |
437 | ||
e041b6d2 | 438 | /// \interface WCCPv2_Protocol |
26ac0430 | 439 | struct wccp2_router_list_t { |
0b0cfcf2 | 440 | |
441 | struct wccp2_router_id_element_t *info; | |
442 | ||
cc192b50 | 443 | struct in_addr local_ip; |
0b0cfcf2 | 444 | |
cc192b50 | 445 | struct in_addr router_sendto_address; |
0b0cfcf2 | 446 | uint32_t member_change; |
447 | uint32_t num_caches; | |
448 | ||
449 | struct wccp2_cache_list_t cache_list_head; | |
450 | ||
451 | struct wccp2_router_list_t *next; | |
452 | }; | |
453 | ||
454 | static int wccp2_numrouters; | |
455 | ||
e041b6d2 | 456 | /// \interface WCCPv2_Protocol |
26ac0430 | 457 | struct wccp2_service_list_t { |
0b0cfcf2 | 458 | |
459 | struct wccp2_service_info_t info; | |
460 | uint32_t num_routers; | |
461 | ||
462 | struct wccp2_router_list_t router_list_head; | |
463 | int lowest_ip; | |
464 | uint32_t change_num; | |
465 | ||
b7d249f9 | 466 | char *wccp2_identity_info_ptr; |
0b0cfcf2 | 467 | |
468 | struct wccp2_security_md5_t *security_info; | |
469 | ||
470 | struct wccp2_service_info_t *service_info; | |
471 | char wccp_packet[WCCP_RESPONSE_SIZE]; | |
472 | size_t wccp_packet_size; | |
473 | ||
474 | struct wccp2_service_list_t *next; | |
475 | char wccp_password[WCCP2_PASSWORD_LEN + 1]; /* hold the trailing C-string NUL */ | |
476 | uint32_t wccp2_security_type; | |
477 | }; | |
478 | ||
479 | static struct wccp2_service_list_t *wccp2_service_list_head = NULL; | |
480 | ||
26ac0430 | 481 | int empty_portlist[WCCP2_NUMPORTS] = {0, 0, 0, 0, 0, 0, 0, 0}; |
0b0cfcf2 | 482 | |
c898ced1 AJ |
483 | /* END WCCP V2 PROTOCL TYPES DEFINITION */ |
484 | ||
0b0cfcf2 | 485 | void wccp2_add_service_list(int service, int service_id, int service_priority, |
486 | int service_proto, int service_flags, int ports[], int security_type, char *password); | |
264096e2 | 487 | static void wccp2SortCacheList(struct wccp2_cache_list_t *head); |
0b0cfcf2 | 488 | |
489 | /* | |
490 | * The functions used during startup: | |
491 | * wccp2Init | |
492 | * wccp2ConnectionOpen | |
493 | * wccp2ConnectionClose | |
494 | */ | |
495 | ||
496 | static void | |
497 | wccp2InitServices(void) | |
498 | { | |
bf8fe701 | 499 | debugs(80, 5, "wccp2InitServices: called"); |
0b0cfcf2 | 500 | } |
501 | ||
502 | static void | |
0b0cfcf2 | 503 | wccp2_update_service(struct wccp2_service_list_t *srv, int service, |
504 | int service_id, int service_priority, int service_proto, int service_flags, | |
505 | int ports[]) | |
506 | { | |
507 | /* XXX check what needs to be wrapped in htons()! */ | |
508 | srv->info.service = service; | |
509 | srv->info.service_id = service_id; | |
510 | srv->info.service_priority = service_priority; | |
511 | srv->info.service_protocol = service_proto; | |
512 | srv->info.service_flags = htonl(service_flags); | |
513 | srv->info.port0 = htons(ports[0]); | |
514 | srv->info.port1 = htons(ports[1]); | |
515 | srv->info.port2 = htons(ports[2]); | |
516 | srv->info.port3 = htons(ports[3]); | |
517 | srv->info.port4 = htons(ports[4]); | |
518 | srv->info.port5 = htons(ports[5]); | |
519 | srv->info.port6 = htons(ports[6]); | |
520 | srv->info.port7 = htons(ports[7]); | |
521 | } | |
522 | ||
523 | void | |
524 | wccp2_add_service_list(int service, int service_id, int service_priority, | |
525 | int service_proto, int service_flags, int ports[], int security_type, | |
526 | char *password) | |
527 | { | |
528 | ||
529 | struct wccp2_service_list_t *wccp2_service_list_ptr; | |
530 | ||
531 | wccp2_service_list_ptr = (wccp2_service_list_t *) xcalloc(1, sizeof(struct wccp2_service_list_t)); | |
532 | ||
bf8fe701 | 533 | debugs(80, 5, "wccp2_add_service_list: added service id " << service_id); |
0b0cfcf2 | 534 | |
535 | /* XXX check what needs to be wrapped in htons()! */ | |
536 | wccp2_service_list_ptr->info.service_type = htons(WCCP2_SERVICE_INFO); | |
537 | ||
538 | wccp2_service_list_ptr->info.service_length = htons(sizeof(struct wccp2_service_info_t) - 4); | |
539 | wccp2_service_list_ptr->change_num = 0; | |
540 | wccp2_update_service(wccp2_service_list_ptr, service, service_id, | |
541 | service_priority, service_proto, service_flags, ports); | |
542 | wccp2_service_list_ptr->wccp2_security_type = security_type; | |
a302ad3c | 543 | memset(wccp2_service_list_ptr->wccp_password, 0, WCCP2_PASSWORD_LEN + 1); |
0b0cfcf2 | 544 | strncpy(wccp2_service_list_ptr->wccp_password, password, WCCP2_PASSWORD_LEN); |
545 | /* add to linked list - XXX this should use the Squid dlink* routines! */ | |
546 | wccp2_service_list_ptr->next = wccp2_service_list_head; | |
547 | wccp2_service_list_head = wccp2_service_list_ptr; | |
548 | } | |
549 | ||
550 | static struct wccp2_service_list_t * | |
e1381638 | 551 | wccp2_get_service_by_id(int service, int service_id) { |
0b0cfcf2 | 552 | |
553 | struct wccp2_service_list_t *p; | |
554 | ||
555 | p = wccp2_service_list_head; | |
556 | ||
26ac0430 | 557 | while (p != NULL) { |
0b0cfcf2 | 558 | if (p->info.service == service && p->info.service_id == service_id) { |
559 | return p; | |
560 | } | |
561 | ||
562 | p = p->next; | |
563 | } | |
564 | ||
565 | return NULL; | |
566 | } | |
567 | ||
568 | /* | |
569 | * Update the md5 security header, if possible | |
570 | * | |
571 | * Returns: 1 if we set it, 0 if not (eg, no security section, or non-md5) | |
572 | */ | |
573 | static char | |
574 | wccp2_update_md5_security(char *password, char *ptr, char *packet, int len) | |
575 | { | |
09aabd84 | 576 | uint8_t md5_digest[16]; |
0b0cfcf2 | 577 | char pwd[WCCP2_PASSWORD_LEN]; |
c3031d67 | 578 | SquidMD5_CTX M; |
0b0cfcf2 | 579 | |
580 | struct wccp2_security_md5_t *ws; | |
581 | ||
bf8fe701 | 582 | debugs(80, 5, "wccp2_update_md5_security: called"); |
0b0cfcf2 | 583 | |
584 | /* The password field, for the MD5 hash, needs to be 8 bytes and NUL padded. */ | |
a302ad3c | 585 | memset(pwd, 0, sizeof(pwd)); |
0b0cfcf2 | 586 | strncpy(pwd, password, sizeof(pwd)); |
587 | ||
588 | ws = (struct wccp2_security_md5_t *) ptr; | |
589 | assert(ntohs(ws->security_type) == WCCP2_SECURITY_INFO); | |
590 | /* Its the security part */ | |
591 | ||
592 | if (ntohl(ws->security_option) != WCCP2_MD5_SECURITY) { | |
bf8fe701 | 593 | debugs(80, 5, "wccp2_update_md5_security: this service ain't md5'ing, abort"); |
0b0cfcf2 | 594 | return 0; |
595 | } | |
596 | ||
597 | /* And now its the MD5 section! */ | |
598 | /* According to the draft, the MD5 security hash is the combination of | |
599 | * the 8-octet password (padded w/ NUL bytes) and the entire WCCP packet, | |
600 | * including the WCCP message header. The WCCP security implementation | |
601 | * area should be zero'ed before calculating the MD5 hash. | |
602 | */ | |
603 | /* XXX eventually we should be able to kill md5_digest and blit it directly in */ | |
a302ad3c | 604 | memset(ws->security_implementation, 0, sizeof(ws->security_implementation)); |
0b0cfcf2 | 605 | |
c3031d67 | 606 | SquidMD5Init(&M); |
0b0cfcf2 | 607 | |
c3031d67 | 608 | SquidMD5Update(&M, pwd, 8); |
0b0cfcf2 | 609 | |
c3031d67 | 610 | SquidMD5Update(&M, packet, len); |
0b0cfcf2 | 611 | |
c3031d67 | 612 | SquidMD5Final(md5_digest, &M); |
0b0cfcf2 | 613 | |
614 | memcpy(ws->security_implementation, md5_digest, sizeof(md5_digest)); | |
615 | ||
616 | /* Finished! */ | |
617 | return 1; | |
618 | } | |
619 | ||
0b0cfcf2 | 620 | /* |
621 | * Check the given WCCP2 packet against the given password. | |
622 | */ | |
623 | static char | |
624 | ||
625 | wccp2_check_security(struct wccp2_service_list_t *srv, char *security, char *packet, int len) | |
626 | { | |
627 | ||
628 | struct wccp2_security_md5_t *ws = (struct wccp2_security_md5_t *) security; | |
09aabd84 | 629 | uint8_t md5_digest[16], md5_challenge[16]; |
0b0cfcf2 | 630 | char pwd[WCCP2_PASSWORD_LEN]; |
c3031d67 | 631 | SquidMD5_CTX M; |
0b0cfcf2 | 632 | |
633 | /* Make sure the security type matches what we expect */ | |
634 | ||
26ac0430 | 635 | if (ntohl(ws->security_option) != srv->wccp2_security_type) { |
e0236918 | 636 | debugs(80, DBG_IMPORTANT, "wccp2_check_security: received packet has the wrong security option"); |
0b0cfcf2 | 637 | return 0; |
638 | } | |
639 | ||
26ac0430 | 640 | if (srv->wccp2_security_type == WCCP2_NO_SECURITY) { |
0b0cfcf2 | 641 | return 1; |
642 | } | |
643 | ||
26ac0430 | 644 | if (srv->wccp2_security_type != WCCP2_MD5_SECURITY) { |
e0236918 | 645 | debugs(80, DBG_IMPORTANT, "wccp2_check_security: invalid security option"); |
0b0cfcf2 | 646 | return 0; |
647 | } | |
648 | ||
649 | /* If execution makes it here then we have an MD5 security */ | |
650 | ||
651 | /* The password field, for the MD5 hash, needs to be 8 bytes and NUL padded. */ | |
a302ad3c | 652 | memset(pwd, 0, sizeof(pwd)); |
0b0cfcf2 | 653 | |
654 | strncpy(pwd, srv->wccp_password, sizeof(pwd)); | |
655 | ||
656 | /* Take a copy of the challenge: we need to NUL it before comparing */ | |
657 | memcpy(md5_challenge, ws->security_implementation, 16); | |
658 | ||
a302ad3c | 659 | memset(ws->security_implementation, 0, sizeof(ws->security_implementation)); |
0b0cfcf2 | 660 | |
c3031d67 | 661 | SquidMD5Init(&M); |
0b0cfcf2 | 662 | |
c3031d67 | 663 | SquidMD5Update(&M, pwd, 8); |
0b0cfcf2 | 664 | |
c3031d67 | 665 | SquidMD5Update(&M, packet, len); |
0b0cfcf2 | 666 | |
c3031d67 | 667 | SquidMD5Final(md5_digest, &M); |
0b0cfcf2 | 668 | |
669 | return (memcmp(md5_digest, md5_challenge, 16) == 0); | |
670 | } | |
671 | ||
0b0cfcf2 | 672 | void |
673 | wccp2Init(void) | |
674 | { | |
b7ac5457 | 675 | Ip::Address_list *s; |
0b0cfcf2 | 676 | char *ptr; |
b7d249f9 | 677 | uint32_t service_flags; |
0b0cfcf2 | 678 | |
679 | struct wccp2_service_list_t *service_list_ptr; | |
680 | ||
681 | struct wccp2_router_list_t *router_list_ptr; | |
682 | ||
683 | struct wccp2_security_md5_t wccp2_security_md5; | |
684 | ||
bf8fe701 | 685 | debugs(80, 5, "wccp2Init: Called"); |
0b0cfcf2 | 686 | |
687 | if (wccp2_connected == 1) | |
688 | return; | |
689 | ||
690 | wccp2_numrouters = 0; | |
691 | ||
692 | /* Calculate the number of routers configured in the config file */ | |
693 | for (s = Config.Wccp2.router; s; s = s->next) { | |
cc192b50 | 694 | if (!s->s.IsAnyAddr()) { |
0b0cfcf2 | 695 | /* Increment the counter */ |
14942edd | 696 | ++wccp2_numrouters; |
0b0cfcf2 | 697 | } |
698 | } | |
699 | ||
700 | if (wccp2_numrouters == 0) { | |
701 | return; | |
702 | } | |
703 | ||
704 | /* Initialise the list of services */ | |
705 | wccp2InitServices(); | |
706 | ||
707 | service_list_ptr = wccp2_service_list_head; | |
708 | ||
709 | while (service_list_ptr != NULL) { | |
710 | /* Set up our list pointers */ | |
711 | router_list_ptr = &service_list_ptr->router_list_head; | |
712 | ||
713 | /* start the wccp header */ | |
714 | wccp2_here_i_am_header.type = htonl(WCCP2_HERE_I_AM); | |
715 | wccp2_here_i_am_header.version = htons(WCCP2_VERSION); | |
716 | wccp2_here_i_am_header.length = 0; | |
717 | ptr = service_list_ptr->wccp_packet + sizeof(wccp2_here_i_am_header); | |
718 | ||
719 | /* add the security section */ | |
720 | /* XXX this is ugly */ | |
721 | ||
722 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
723 | wccp2_security_md5.security_option = htonl(WCCP2_MD5_SECURITY); | |
724 | ||
725 | wccp2_security_md5.security_length = htons(sizeof(struct wccp2_security_md5_t) - 4); | |
726 | } else if (service_list_ptr->wccp2_security_type == WCCP2_NO_SECURITY) { | |
727 | wccp2_security_md5.security_option = htonl(WCCP2_NO_SECURITY); | |
728 | /* XXX I hate magic length numbers! */ | |
729 | wccp2_security_md5.security_length = htons(4); | |
730 | } else { | |
731 | fatalf("Bad WCCP2 security type\n"); | |
732 | } | |
733 | ||
734 | wccp2_here_i_am_header.length += ntohs(wccp2_security_md5.security_length) + 4; | |
735 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
736 | wccp2_security_md5.security_type = htons(WCCP2_SECURITY_INFO); | |
737 | ||
738 | service_list_ptr->security_info = (struct wccp2_security_md5_t *) ptr; | |
739 | ||
740 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
41d00cd3 | 741 | memcpy(ptr, &wccp2_security_md5, sizeof(struct wccp2_security_md5_t)); |
0b0cfcf2 | 742 | ptr += sizeof(struct wccp2_security_md5_t); |
743 | } else { | |
744 | /* assume NONE, and XXX I hate magic length numbers */ | |
41d00cd3 | 745 | memcpy(ptr, &wccp2_security_md5, 8); |
0b0cfcf2 | 746 | ptr += 8; |
747 | } | |
748 | ||
749 | /* Add the service info section */ | |
750 | ||
751 | wccp2_here_i_am_header.length += sizeof(struct wccp2_service_info_t); | |
752 | ||
753 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
754 | ||
41d00cd3 | 755 | memcpy(ptr, &service_list_ptr->info, sizeof(struct wccp2_service_info_t)); |
0b0cfcf2 | 756 | |
757 | service_list_ptr->service_info = (struct wccp2_service_info_t *) ptr; | |
758 | ||
759 | ptr += sizeof(struct wccp2_service_info_t); | |
760 | ||
761 | /* Add the cache identity section */ | |
762 | ||
b7d249f9 | 763 | switch (Config.Wccp2.assignment_method) { |
0b0cfcf2 | 764 | |
b7d249f9 | 765 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
0b0cfcf2 | 766 | |
b7d249f9 | 767 | wccp2_here_i_am_header.length += sizeof(struct wccp2_identity_info_t); |
768 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
769 | wccp2_identity_info.cache_identity_type = htons(WCCP2_WC_ID_INFO); | |
770 | wccp2_identity_info.cache_identity_length = htons(sizeof(wccp2_identity_info.cache_identity)); | |
cc192b50 | 771 | memset(&wccp2_identity_info.cache_identity.addr, '\0', sizeof(struct in_addr)); |
b7d249f9 | 772 | memset(&wccp2_identity_info.cache_identity.hash_revision, '\0', sizeof(wccp2_identity_info.cache_identity.hash_revision)); |
773 | memset(&wccp2_identity_info.cache_identity.bits, '\0', sizeof(wccp2_identity_info.cache_identity.bits)); | |
774 | memset(&wccp2_identity_info.cache_identity.buckets, '\0', sizeof(wccp2_identity_info.cache_identity.buckets)); | |
775 | wccp2_identity_info.cache_identity.weight = htons(Config.Wccp2.weight); | |
776 | memset(&wccp2_identity_info.cache_identity.status, '\0', sizeof(wccp2_identity_info.cache_identity.status)); | |
0b0cfcf2 | 777 | |
41d00cd3 | 778 | memcpy(ptr, &wccp2_identity_info, sizeof(struct wccp2_identity_info_t)); |
b7d249f9 | 779 | service_list_ptr->wccp2_identity_info_ptr = ptr; |
0b0cfcf2 | 780 | |
b7d249f9 | 781 | ptr += sizeof(struct wccp2_identity_info_t); |
782 | break; | |
0b0cfcf2 | 783 | |
b7d249f9 | 784 | case WCCP2_ASSIGNMENT_METHOD_MASK: |
785 | ||
786 | wccp2_here_i_am_header.length += sizeof(struct wccp2_mask_identity_info_t); | |
787 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
788 | wccp2_mask_identity_info.cache_identity_type = htons(WCCP2_WC_ID_INFO); | |
789 | wccp2_mask_identity_info.cache_identity_length = htons(sizeof(wccp2_mask_identity_info.cache_identity)); | |
cc192b50 | 790 | memset(&wccp2_mask_identity_info.cache_identity.addr, '\0', sizeof(struct in_addr)); |
85442144 | 791 | wccp2_mask_identity_info.cache_identity.bits = htons(WCCP2_MASK_ASSIGNMENT_DATA); |
c898ced1 | 792 | wccp2_mask_identity_info.cache_identity.mask_element_count = htonl(1); |
b7d249f9 | 793 | service_flags = ntohl(service_list_ptr->service_info->service_flags); |
794 | ||
c898ced1 AJ |
795 | memset(&wccp2_mask_identity_info.cache_identity.mask, 0, sizeof(struct wccp2_mask_element_t)); |
796 | ||
b7d249f9 | 797 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { |
c898ced1 | 798 | wccp2_mask_identity_info.cache_identity.mask.source_ip_mask = htonl(0x00001741); |
b7d249f9 | 799 | } 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 | 800 | wccp2_mask_identity_info.cache_identity.mask.dest_ip_mask = htonl(0x00001741); |
b7d249f9 | 801 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { |
c898ced1 | 802 | wccp2_mask_identity_info.cache_identity.mask.source_port_mask = htons(0x1741); |
b7d249f9 | 803 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { |
c898ced1 | 804 | wccp2_mask_identity_info.cache_identity.mask.dest_port_mask = htons(0x1741); |
b7d249f9 | 805 | } else { |
806 | fatalf("Unknown service hash method\n"); | |
807 | } | |
0b0cfcf2 | 808 | |
c898ced1 AJ |
809 | wccp2_mask_identity_info.cache_identity.weight = 0; |
810 | wccp2_mask_identity_info.cache_identity.status = 0; | |
0b0cfcf2 | 811 | |
41d00cd3 | 812 | memcpy(ptr, &wccp2_mask_identity_info, sizeof(struct wccp2_mask_identity_info_t)); |
b7d249f9 | 813 | service_list_ptr->wccp2_identity_info_ptr = ptr; |
0b0cfcf2 | 814 | |
b7d249f9 | 815 | ptr += sizeof(struct wccp2_mask_identity_info_t); |
816 | break; | |
0b0cfcf2 | 817 | |
b7d249f9 | 818 | default: |
819 | fatalf("Unknown Wccp2 assignment method\n"); | |
820 | } | |
0b0cfcf2 | 821 | |
822 | /* Add the cache view section */ | |
823 | wccp2_here_i_am_header.length += sizeof(wccp2_cache_view_header); | |
824 | ||
825 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
826 | ||
827 | wccp2_cache_view_header.cache_view_type = htons(WCCP2_WC_VIEW_INFO); | |
828 | ||
829 | wccp2_cache_view_header.cache_view_length = htons(sizeof(wccp2_cache_view_header) - 4 + | |
830 | sizeof(wccp2_cache_view_info) + (wccp2_numrouters * sizeof(wccp2_router_id_element))); | |
831 | ||
832 | wccp2_cache_view_header.cache_view_version = htonl(1); | |
833 | ||
41d00cd3 | 834 | memcpy(ptr, &wccp2_cache_view_header, sizeof(wccp2_cache_view_header)); |
0b0cfcf2 | 835 | |
836 | ptr += sizeof(wccp2_cache_view_header); | |
837 | ||
838 | /* Add the number of routers to the packet */ | |
839 | wccp2_here_i_am_header.length += sizeof(service_list_ptr->num_routers); | |
840 | ||
841 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
842 | ||
843 | service_list_ptr->num_routers = htonl(wccp2_numrouters); | |
844 | ||
41d00cd3 | 845 | memcpy(ptr, &service_list_ptr->num_routers, sizeof(service_list_ptr->num_routers)); |
0b0cfcf2 | 846 | |
847 | ptr += sizeof(service_list_ptr->num_routers); | |
848 | ||
849 | /* Add each router. Keep this functionality here to make sure the received_id can be updated in the packet */ | |
850 | for (s = Config.Wccp2.router; s; s = s->next) { | |
cc192b50 | 851 | if (!s->s.IsAnyAddr()) { |
0b0cfcf2 | 852 | |
853 | wccp2_here_i_am_header.length += sizeof(struct wccp2_router_id_element_t); | |
854 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
855 | ||
856 | /* Add a pointer to the router list for this router */ | |
857 | ||
858 | router_list_ptr->info = (struct wccp2_router_id_element_t *) ptr; | |
cc192b50 | 859 | s->s.GetInAddr(router_list_ptr->info->router_address); |
0b0cfcf2 | 860 | router_list_ptr->info->received_id = htonl(0); |
cc192b50 | 861 | s->s.GetInAddr(router_list_ptr->router_sendto_address); |
0b0cfcf2 | 862 | router_list_ptr->member_change = htonl(0); |
863 | ||
864 | /* Build the next struct */ | |
865 | ||
866 | router_list_ptr->next = (wccp2_router_list_t*) xcalloc(1, sizeof(struct wccp2_router_list_t)); | |
867 | ||
868 | /* update the pointer */ | |
869 | router_list_ptr = router_list_ptr->next; | |
870 | router_list_ptr->next = NULL; | |
871 | ||
872 | /* no need to copy memory - we've just set the values directly in the packet above */ | |
873 | ||
874 | ptr += sizeof(struct wccp2_router_id_element_t); | |
875 | } | |
876 | } | |
877 | ||
878 | /* Add the number of caches (0) */ | |
879 | wccp2_here_i_am_header.length += sizeof(wccp2_cache_view_info.num_caches); | |
880 | ||
881 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
882 | ||
883 | wccp2_cache_view_info.num_caches = htonl(0); | |
884 | ||
41d00cd3 | 885 | memcpy(ptr, &wccp2_cache_view_info.num_caches, sizeof(wccp2_cache_view_info.num_caches)); |
0b0cfcf2 | 886 | |
887 | ptr += sizeof(wccp2_cache_view_info.num_caches); | |
888 | ||
889 | /* Add the extra capability header */ | |
890 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_info_header); | |
891 | ||
892 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
893 | ||
894 | wccp2_capability_info_header.capability_info_type = htons(WCCP2_CAPABILITY_INFO); | |
895 | ||
c1f55201 | 896 | wccp2_capability_info_header.capability_info_length = htons(3 * sizeof(wccp2_capability_element)); |
0b0cfcf2 | 897 | |
41d00cd3 | 898 | memcpy(ptr, &wccp2_capability_info_header, sizeof(wccp2_capability_info_header)); |
0b0cfcf2 | 899 | |
900 | ptr += sizeof(wccp2_capability_info_header); | |
901 | ||
902 | /* Add the forwarding method */ | |
903 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
904 | ||
905 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
906 | ||
907 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_FORWARDING_METHOD); | |
908 | ||
909 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
910 | ||
911 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.forwarding_method); | |
912 | ||
41d00cd3 | 913 | memcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); |
0b0cfcf2 | 914 | |
915 | ptr += sizeof(wccp2_capability_element); | |
916 | ||
c1f55201 | 917 | /* Add the assignment method */ |
918 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
919 | ||
920 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
921 | ||
922 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_ASSIGNMENT_METHOD); | |
923 | ||
924 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
925 | ||
b7d249f9 | 926 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.assignment_method); |
c1f55201 | 927 | |
41d00cd3 | 928 | memcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); |
c1f55201 | 929 | |
930 | ptr += sizeof(wccp2_capability_element); | |
931 | ||
0b0cfcf2 | 932 | /* Add the return method */ |
933 | wccp2_here_i_am_header.length += sizeof(wccp2_capability_element); | |
934 | ||
935 | assert(wccp2_here_i_am_header.length <= WCCP_RESPONSE_SIZE); | |
936 | ||
937 | wccp2_capability_element.capability_type = htons(WCCP2_CAPABILITY_RETURN_METHOD); | |
938 | ||
939 | wccp2_capability_element.capability_length = htons(sizeof(wccp2_capability_element.capability_value)); | |
940 | ||
941 | wccp2_capability_element.capability_value = htonl(Config.Wccp2.return_method); | |
942 | ||
41d00cd3 | 943 | memcpy(ptr, &wccp2_capability_element, sizeof(wccp2_capability_element)); |
0b0cfcf2 | 944 | |
945 | ptr += sizeof(wccp2_capability_element); | |
946 | ||
947 | /* Finally, fix the total length to network order, and copy to the appropriate memory blob */ | |
948 | wccp2_here_i_am_header.length = htons(wccp2_here_i_am_header.length); | |
949 | ||
950 | memcpy(&service_list_ptr->wccp_packet, &wccp2_here_i_am_header, sizeof(wccp2_here_i_am_header)); | |
951 | ||
952 | service_list_ptr->wccp_packet_size = ntohs(wccp2_here_i_am_header.length) + sizeof(wccp2_here_i_am_header); | |
953 | ||
954 | /* Add the event if everything initialised correctly */ | |
51676485 | 955 | debugs(80,3,"wccp2Init: scheduled 'HERE_I_AM' message to " << wccp2_numrouters << "routers."); |
0b0cfcf2 | 956 | if (wccp2_numrouters) { |
957 | if (!eventFind(wccp2HereIam, NULL)) { | |
958 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 1, 1); | |
af6a12ee | 959 | } else |
51676485 | 960 | debugs(80,3,"wccp2Init: skip duplicate 'HERE_I_AM'."); |
0b0cfcf2 | 961 | } |
962 | ||
963 | service_list_ptr = service_list_ptr->next; | |
964 | } | |
965 | } | |
966 | ||
967 | void | |
968 | wccp2ConnectionOpen(void) | |
969 | { | |
c1f55201 | 970 | struct sockaddr_in router, local, null; |
0b0cfcf2 | 971 | socklen_t local_len, router_len; |
972 | ||
973 | struct wccp2_service_list_t *service_list_ptr; | |
974 | ||
975 | struct wccp2_router_list_t *router_list_ptr; | |
976 | ||
bf8fe701 | 977 | debugs(80, 5, "wccp2ConnectionOpen: Called"); |
0b0cfcf2 | 978 | |
979 | if (wccp2_numrouters == 0 || !wccp2_service_list_head) { | |
30c48b1a | 980 | debugs(80, 2, "WCCPv2 Disabled. No IPv4 Router(s) configured."); |
0b0cfcf2 | 981 | return; |
982 | } | |
983 | ||
26ac0430 | 984 | if ( !Config.Wccp2.address.SetIPv4() ) { |
30c48b1a | 985 | debugs(80, DBG_CRITICAL, "WCCPv2 Disabled. Local address " << Config.Wccp2.address << " is not an IPv4 address."); |
cc192b50 | 986 | return; |
987 | } | |
988 | ||
989 | Config.Wccp2.address.SetPort(WCCP_PORT); | |
31be869c | 990 | theWccp2Connection = comm_open_listener(SOCK_DGRAM, |
04f7fd38 AJ |
991 | 0, |
992 | Config.Wccp2.address, | |
993 | COMM_NONBLOCKING, | |
994 | "WCCPv2 Socket"); | |
0b0cfcf2 | 995 | |
996 | if (theWccp2Connection < 0) | |
997 | fatal("Cannot open WCCP Port"); | |
998 | ||
85d25b95 | 999 | #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) |
1000 | { | |
1001 | int i = IP_PMTUDISC_DONT; | |
1002 | setsockopt(theWccp2Connection, SOL_IP, IP_MTU_DISCOVER, &i, sizeof i); | |
1003 | } | |
1004 | ||
1005 | #endif | |
d841c88d | 1006 | Comm::SetSelect(theWccp2Connection, COMM_SELECT_READ, wccp2HandleUdp, NULL, 0); |
0b0cfcf2 | 1007 | |
e0236918 FC |
1008 | debugs(80, DBG_IMPORTANT, "Accepting WCCPv2 messages on port " << WCCP_PORT << ", FD " << theWccp2Connection << "."); |
1009 | debugs(80, DBG_IMPORTANT, "Initialising all WCCPv2 lists"); | |
0b0cfcf2 | 1010 | |
1011 | /* Initialise all routers on all services */ | |
c1f55201 | 1012 | memset(&null, 0, sizeof(null)); |
1013 | ||
1014 | null.sin_family = AF_UNSPEC; | |
1015 | ||
0b0cfcf2 | 1016 | service_list_ptr = wccp2_service_list_head; |
1017 | ||
1018 | while (service_list_ptr != NULL) { | |
1019 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1020 | router_len = sizeof(router); | |
1021 | memset(&router, '\0', router_len); | |
1022 | router.sin_family = AF_INET; | |
cc192b50 | 1023 | router.sin_port = htons(WCCP_PORT); |
0b0cfcf2 | 1024 | router.sin_addr = router_list_ptr->router_sendto_address; |
1025 | ||
1026 | if (connect(theWccp2Connection, (struct sockaddr *) &router, router_len)) | |
1027 | fatal("Unable to connect WCCP out socket"); | |
1028 | ||
1029 | local_len = sizeof(local); | |
1030 | ||
1031 | memset(&local, '\0', local_len); | |
1032 | ||
1033 | if (getsockname(theWccp2Connection, (struct sockaddr *) &local, &local_len)) | |
1034 | fatal("Unable to getsockname on WCCP out socket"); | |
1035 | ||
1036 | router_list_ptr->local_ip = local.sin_addr; | |
1037 | ||
c1f55201 | 1038 | /* Disconnect the sending socket. Note: FreeBSD returns error |
1039 | * but disconnects anyway so we have to just assume it worked | |
1040 | */ | |
1041 | if (wccp2_numrouters > 1) | |
c1f55201 | 1042 | connect(theWccp2Connection, (struct sockaddr *) &null, router_len); |
0b0cfcf2 | 1043 | } |
1044 | ||
1045 | service_list_ptr = service_list_ptr->next; | |
1046 | } | |
1047 | ||
0b0cfcf2 | 1048 | wccp2_connected = 1; |
1049 | } | |
1050 | ||
1051 | void | |
1052 | wccp2ConnectionClose(void) | |
1053 | { | |
1054 | ||
1055 | struct wccp2_service_list_t *service_list_ptr; | |
1056 | ||
1057 | struct wccp2_service_list_t *service_list_ptr_next; | |
1058 | ||
1059 | struct wccp2_router_list_t *router_list_ptr; | |
1060 | ||
1061 | struct wccp2_router_list_t *router_list_next; | |
1062 | ||
1063 | struct wccp2_cache_list_t *cache_list_ptr; | |
1064 | ||
1065 | struct wccp2_cache_list_t *cache_list_ptr_next; | |
1066 | ||
1067 | if (wccp2_connected == 0) { | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | if (theWccp2Connection > -1) { | |
e0236918 | 1072 | debugs(80, DBG_IMPORTANT, "FD " << theWccp2Connection << " Closing WCCPv2 socket"); |
0b0cfcf2 | 1073 | comm_close(theWccp2Connection); |
1074 | theWccp2Connection = -1; | |
1075 | } | |
1076 | ||
1077 | /* for each router on each service send a packet */ | |
1078 | service_list_ptr = wccp2_service_list_head; | |
1079 | ||
1080 | while (service_list_ptr != NULL) { | |
1081 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr != NULL; router_list_ptr = router_list_next) { | |
1082 | for (cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr; cache_list_ptr = cache_list_ptr_next) { | |
1083 | cache_list_ptr_next = cache_list_ptr->next; | |
1084 | ||
1085 | if (cache_list_ptr != &router_list_ptr->cache_list_head) { | |
1086 | xfree(cache_list_ptr); | |
1087 | } else { | |
1088 | ||
1089 | memset(cache_list_ptr, '\0', sizeof(struct wccp2_cache_list_t)); | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | router_list_next = router_list_ptr->next; | |
1094 | ||
1095 | if (router_list_ptr != &service_list_ptr->router_list_head) { | |
1096 | xfree(router_list_ptr); | |
1097 | } else { | |
1098 | ||
1099 | memset(router_list_ptr, '\0', sizeof(struct wccp2_router_list_t)); | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | service_list_ptr_next = service_list_ptr->next; | |
1104 | xfree(service_list_ptr); | |
1105 | service_list_ptr = service_list_ptr_next; | |
1106 | } | |
1107 | ||
1108 | wccp2_service_list_head = NULL; | |
1109 | eventDelete(wccp2HereIam, NULL); | |
1110 | eventDelete(wccp2AssignBuckets, NULL); | |
1111 | eventDelete(wccp2HereIam, NULL); | |
1112 | wccp2_connected = 0; | |
1113 | } | |
1114 | ||
1115 | /* | |
1116 | * Functions for handling the requests. | |
1117 | */ | |
1118 | ||
1119 | /* | |
1120 | * Accept the UDP packet | |
1121 | */ | |
1122 | static void | |
1123 | wccp2HandleUdp(int sock, void *not_used) | |
1124 | { | |
1125 | ||
1126 | struct wccp2_service_list_t *service_list_ptr; | |
1127 | ||
1128 | struct wccp2_router_list_t *router_list_ptr; | |
1129 | ||
1130 | struct wccp2_cache_list_t *cache_list_ptr; | |
1131 | ||
1132 | struct wccp2_cache_list_t *cache_list_ptr_next; | |
1133 | ||
1134 | /* These structs form the parts of the packet */ | |
1135 | ||
1136 | struct wccp2_item_header_t *header = NULL; | |
1137 | ||
1138 | struct wccp2_security_none_t *security_info = NULL; | |
1139 | ||
1140 | struct wccp2_service_info_t *service_info = NULL; | |
1141 | ||
1142 | struct router_identity_info_t *router_identity_info = NULL; | |
1143 | ||
1144 | struct router_view_t *router_view_header = NULL; | |
1145 | ||
b7d249f9 | 1146 | struct wccp2_cache_mask_identity_info_t *cache_mask_identity = NULL; |
1147 | ||
1148 | struct cache_mask_info_t *cache_mask_info = NULL; | |
1149 | ||
0b0cfcf2 | 1150 | struct wccp2_cache_identity_info_t *cache_identity = NULL; |
1151 | ||
1152 | struct wccp2_capability_info_header_t *router_capability_header = NULL; | |
1153 | ||
1154 | struct wccp2_capability_element_t *router_capability_element; | |
1155 | ||
1156 | struct sockaddr_in from; | |
1157 | ||
2adffc6f | 1158 | struct in_addr cache_address; |
0b0cfcf2 | 1159 | int len, found; |
1160 | short int data_length, offset; | |
1161 | uint32_t tmp; | |
1162 | char *ptr; | |
1163 | int num_caches; | |
0b0cfcf2 | 1164 | |
bf8fe701 | 1165 | debugs(80, 6, "wccp2HandleUdp: Called."); |
0b0cfcf2 | 1166 | |
d841c88d | 1167 | Comm::SetSelect(sock, COMM_SELECT_READ, wccp2HandleUdp, NULL, 0); |
0b0cfcf2 | 1168 | |
26ac0430 | 1169 | /* FIXME INET6 : drop conversion boundary */ |
b7ac5457 | 1170 | Ip::Address from_tmp; |
0b0cfcf2 | 1171 | |
1172 | len = comm_udp_recvfrom(sock, | |
1173 | &wccp2_i_see_you, | |
1174 | WCCP_RESPONSE_SIZE, | |
1175 | 0, | |
cc192b50 | 1176 | from_tmp); |
26ac0430 AJ |
1177 | /* FIXME INET6 : drop conversion boundary */ |
1178 | from_tmp.GetSockAddr(from); | |
0b0cfcf2 | 1179 | |
1180 | if (len < 0) | |
1181 | return; | |
1182 | ||
1183 | if (ntohs(wccp2_i_see_you.version) != WCCP2_VERSION) | |
1184 | return; | |
1185 | ||
1186 | if (ntohl(wccp2_i_see_you.type) != WCCP2_I_SEE_YOU) | |
1187 | return; | |
1188 | ||
bf8fe701 | 1189 | debugs(80, 3, "Incoming WCCPv2 I_SEE_YOU length " << ntohs(wccp2_i_see_you.length) << "."); |
0b0cfcf2 | 1190 | |
1191 | /* Record the total data length */ | |
1192 | data_length = ntohs(wccp2_i_see_you.length); | |
1193 | ||
1194 | offset = 0; | |
1195 | ||
1196 | if (data_length > len) { | |
e0236918 | 1197 | debugs(80, DBG_IMPORTANT, "ERROR: Malformed WCCPv2 packet claiming it's bigger than received data"); |
0b0cfcf2 | 1198 | return; |
1199 | } | |
1200 | ||
1201 | /* Go through the data structure */ | |
1202 | while (data_length > offset) { | |
1203 | ||
af6a12ee | 1204 | char *data = wccp2_i_see_you.data; |
c6ba4504 HN |
1205 | |
1206 | header = (struct wccp2_item_header_t *) &data[offset]; | |
0b0cfcf2 | 1207 | |
1208 | switch (ntohs(header->type)) { | |
1209 | ||
1210 | case WCCP2_SECURITY_INFO: | |
1211 | ||
1212 | if (security_info != NULL) { | |
e0236918 | 1213 | debugs(80, DBG_IMPORTANT, "Duplicate security definition"); |
0b0cfcf2 | 1214 | return; |
1215 | } | |
1216 | ||
1217 | security_info = (struct wccp2_security_none_t *) &wccp2_i_see_you.data[offset]; | |
1218 | break; | |
1219 | ||
1220 | case WCCP2_SERVICE_INFO: | |
1221 | ||
1222 | if (service_info != NULL) { | |
e0236918 | 1223 | debugs(80, DBG_IMPORTANT, "Duplicate service_info definition"); |
0b0cfcf2 | 1224 | return; |
1225 | } | |
1226 | ||
1227 | service_info = (struct wccp2_service_info_t *) &wccp2_i_see_you.data[offset]; | |
1228 | break; | |
1229 | ||
1230 | case WCCP2_ROUTER_ID_INFO: | |
1231 | ||
1232 | if (router_identity_info != NULL) { | |
e0236918 | 1233 | debugs(80, DBG_IMPORTANT, "Duplicate router_identity_info definition"); |
0b0cfcf2 | 1234 | return; |
1235 | } | |
1236 | ||
1237 | router_identity_info = (struct router_identity_info_t *) &wccp2_i_see_you.data[offset]; | |
1238 | break; | |
1239 | ||
1240 | case WCCP2_RTR_VIEW_INFO: | |
1241 | ||
1242 | if (router_view_header != NULL) { | |
e0236918 | 1243 | debugs(80, DBG_IMPORTANT, "Duplicate router_view definition"); |
0b0cfcf2 | 1244 | return; |
1245 | } | |
1246 | ||
1247 | router_view_header = (struct router_view_t *) &wccp2_i_see_you.data[offset]; | |
1248 | break; | |
1249 | ||
1250 | case WCCP2_CAPABILITY_INFO: | |
1251 | ||
1252 | if (router_capability_header != NULL) { | |
e0236918 | 1253 | debugs(80, DBG_IMPORTANT, "Duplicate router_capability definition"); |
0b0cfcf2 | 1254 | return; |
1255 | } | |
1256 | ||
1257 | router_capability_header = (struct wccp2_capability_info_header_t *) &wccp2_i_see_you.data[offset]; | |
c1f55201 | 1258 | break; |
0b0cfcf2 | 1259 | |
b7d249f9 | 1260 | /* Nothing to do for the types below */ |
1261 | ||
1262 | case WCCP2_ASSIGN_MAP: | |
40228366 | 1263 | case WCCP2_REDIRECT_ASSIGNMENT: |
b7d249f9 | 1264 | break; |
1265 | ||
0b0cfcf2 | 1266 | default: |
e0236918 | 1267 | debugs(80, DBG_IMPORTANT, "Unknown record type in WCCPv2 Packet (" << ntohs(header->type) << ")."); |
0b0cfcf2 | 1268 | } |
1269 | ||
1270 | offset += sizeof(struct wccp2_item_header_t); | |
1271 | offset += ntohs(header->length); | |
1272 | ||
1273 | if (offset > data_length) { | |
e0236918 | 1274 | debugs(80, DBG_IMPORTANT, "Error: WCCPv2 packet tried to tell us there is data beyond the end of the packet"); |
0b0cfcf2 | 1275 | return; |
1276 | } | |
1277 | } | |
1278 | ||
1279 | if ((security_info == NULL) || (service_info == NULL) || (router_identity_info == NULL) || (router_view_header == NULL)) { | |
e0236918 | 1280 | debugs(80, DBG_IMPORTANT, "Incomplete WCCPv2 Packet"); |
0b0cfcf2 | 1281 | return; |
1282 | } | |
1283 | ||
bf8fe701 | 1284 | debugs(80, 5, "Complete packet received"); |
0b0cfcf2 | 1285 | |
1286 | /* Check that the service in the packet is configured on this router */ | |
1287 | service_list_ptr = wccp2_service_list_head; | |
1288 | ||
1289 | while (service_list_ptr != NULL) { | |
1290 | if (service_info->service_id == service_list_ptr->service_info->service_id) { | |
1291 | break; | |
1292 | } | |
1293 | ||
1294 | service_list_ptr = service_list_ptr->next; | |
1295 | } | |
1296 | ||
1297 | if (service_list_ptr == NULL) { | |
e0236918 | 1298 | debugs(80, DBG_IMPORTANT, "WCCPv2 Unknown service received from router (" << service_info->service_id << ")"); |
0b0cfcf2 | 1299 | return; |
1300 | } | |
1301 | ||
1302 | if (ntohl(security_info->security_option) != ntohl(service_list_ptr->security_info->security_option)) { | |
e0236918 | 1303 | debugs(80, DBG_IMPORTANT, "Invalid security option in WCCPv2 Packet (" << ntohl(security_info->security_option) << " vs " << ntohl(service_list_ptr->security_info->security_option) << ")."); |
0b0cfcf2 | 1304 | return; |
1305 | } | |
1306 | ||
1307 | if (!wccp2_check_security(service_list_ptr, (char *) security_info, (char *) &wccp2_i_see_you, len)) { | |
e0236918 | 1308 | debugs(80, DBG_IMPORTANT, "Received WCCPv2 Packet failed authentication"); |
0b0cfcf2 | 1309 | return; |
1310 | } | |
1311 | ||
1312 | /* Check that the router address is configured on this router */ | |
1313 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1314 | if (router_list_ptr->router_sendto_address.s_addr == from.sin_addr.s_addr) | |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | if (router_list_ptr->next == NULL) { | |
e0236918 | 1319 | debugs(80, DBG_IMPORTANT, "WCCPv2 Packet received from unknown router"); |
0b0cfcf2 | 1320 | return; |
1321 | } | |
1322 | ||
1323 | /* Set the router id */ | |
1324 | router_list_ptr->info->router_address = router_identity_info->router_id_element.router_address; | |
1325 | ||
1326 | /* Increment the received id in the packet */ | |
1327 | if (ntohl(router_list_ptr->info->received_id) != ntohl(router_identity_info->router_id_element.received_id)) { | |
6013702c | 1328 | 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 | 1329 | router_list_ptr->info->received_id = router_identity_info->router_id_element.received_id; |
1330 | } | |
1331 | ||
1332 | /* TODO: check return/forwarding methods */ | |
1333 | if (router_capability_header == NULL) { | |
c1f55201 | 1334 | if ((Config.Wccp2.return_method != WCCP2_PACKET_RETURN_METHOD_GRE) || (Config.Wccp2.forwarding_method != WCCP2_FORWARDING_METHOD_GRE)) { |
e0236918 | 1335 | debugs(80, DBG_IMPORTANT, "wccp2HandleUdp: fatal error - A WCCP router does not support the forwarding method specified, only GRE supported"); |
0b0cfcf2 | 1336 | wccp2ConnectionClose(); |
1337 | return; | |
1338 | } | |
1339 | } else { | |
0b0cfcf2 | 1340 | |
c1f55201 | 1341 | char *end = ((char *) router_capability_header) + sizeof(*router_capability_header) + ntohs(router_capability_header->capability_info_length) - sizeof(struct wccp2_capability_info_header_t); |
1342 | ||
1343 | router_capability_element = (struct wccp2_capability_element_t *) (((char *) router_capability_header) + sizeof(*router_capability_header)); | |
0b0cfcf2 | 1344 | |
c1f55201 | 1345 | while ((char *) router_capability_element <= end) { |
0b0cfcf2 | 1346 | |
1347 | switch (ntohs(router_capability_element->capability_type)) { | |
1348 | ||
1349 | case WCCP2_CAPABILITY_FORWARDING_METHOD: | |
1350 | ||
c1f55201 | 1351 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.forwarding_method)) { |
e0236918 | 1352 | debugs(80, DBG_IMPORTANT, "wccp2HandleUdp: fatal error - A WCCP router has specified a different forwarding method " << ntohl(router_capability_element->capability_value) << ", expected " << Config.Wccp2.forwarding_method); |
0b0cfcf2 | 1353 | wccp2ConnectionClose(); |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | break; | |
1358 | ||
1359 | case WCCP2_CAPABILITY_ASSIGNMENT_METHOD: | |
c1f55201 | 1360 | |
b7d249f9 | 1361 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.assignment_method)) { |
e0236918 | 1362 | debugs(80, DBG_IMPORTANT, "wccp2HandleUdp: fatal error - A WCCP router has specified a different assignment method " << ntohl(router_capability_element->capability_value) << ", expected "<< Config.Wccp2.assignment_method); |
c1f55201 | 1363 | wccp2ConnectionClose(); |
1364 | return; | |
1365 | } | |
1366 | ||
0b0cfcf2 | 1367 | break; |
1368 | ||
1369 | case WCCP2_CAPABILITY_RETURN_METHOD: | |
1370 | ||
c1f55201 | 1371 | if (!(ntohl(router_capability_element->capability_value) & Config.Wccp2.return_method)) { |
e0236918 | 1372 | debugs(80, DBG_IMPORTANT, "wccp2HandleUdp: fatal error - A WCCP router has specified a different return method " << ntohl(router_capability_element->capability_value) << ", expected " << Config.Wccp2.return_method); |
0b0cfcf2 | 1373 | wccp2ConnectionClose(); |
1374 | return; | |
1375 | } | |
1376 | ||
1377 | break; | |
1378 | ||
43f3d687 AJ |
1379 | case 4: |
1380 | case 5: | |
1381 | break; // ignore silently for now | |
1382 | ||
0b0cfcf2 | 1383 | default: |
e0236918 | 1384 | debugs(80, DBG_IMPORTANT, "Unknown capability type in WCCPv2 Packet (" << ntohs(router_capability_element->capability_type) << ")."); |
0b0cfcf2 | 1385 | } |
c1f55201 | 1386 | |
c898ced1 | 1387 | 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 | 1388 | } |
1389 | } | |
1390 | ||
bf8fe701 | 1391 | debugs(80, 5, "Cleaning out cache list"); |
0b0cfcf2 | 1392 | /* clean out the old cache list */ |
1393 | ||
1394 | for (cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr; cache_list_ptr = cache_list_ptr_next) { | |
1395 | cache_list_ptr_next = cache_list_ptr->next; | |
1396 | ||
1397 | if (cache_list_ptr != &router_list_ptr->cache_list_head) { | |
1398 | xfree(cache_list_ptr); | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | router_list_ptr->num_caches = htonl(0); | |
1403 | num_caches = 0; | |
1404 | ||
1405 | /* Check to see if we're the master cache and update the cache list */ | |
1406 | found = 0; | |
1407 | service_list_ptr->lowest_ip = 1; | |
1408 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1409 | ||
1410 | /* to find the list of caches, we start at the end of the router view header */ | |
1411 | ||
1412 | ptr = (char *) (router_view_header) + sizeof(struct router_view_t); | |
1413 | ||
1414 | /* Then we read the number of routers */ | |
1415 | memcpy(&tmp, ptr, sizeof(tmp)); | |
1416 | ||
1417 | /* skip the number plus all the ip's */ | |
1418 | ||
2adffc6f | 1419 | ptr += sizeof(tmp) + (ntohl(tmp) * sizeof(struct in_addr)); |
0b0cfcf2 | 1420 | |
1421 | /* Then read the number of caches */ | |
1422 | memcpy(&tmp, ptr, sizeof(tmp)); | |
1423 | ptr += sizeof(tmp); | |
1424 | ||
1425 | if (ntohl(tmp) != 0) { | |
1426 | /* search through the list of received-from ip addresses */ | |
1427 | ||
14942edd | 1428 | for (num_caches = 0; num_caches < (int) ntohl(tmp); ++num_caches) { |
0b0cfcf2 | 1429 | /* Get a copy of the ip */ |
af6a12ee | 1430 | memset(&cache_address, 0, sizeof(cache_address)); // Make GCC happy |
0b0cfcf2 | 1431 | |
b7d249f9 | 1432 | switch (Config.Wccp2.assignment_method) { |
1433 | ||
1434 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1435 | ||
1436 | cache_identity = (struct wccp2_cache_identity_info_t *) ptr; | |
1437 | ||
1438 | ptr += sizeof(struct wccp2_cache_identity_info_t); | |
1439 | ||
2adffc6f | 1440 | memcpy(&cache_address, &cache_identity->addr, sizeof(struct in_addr)); |
b7d249f9 | 1441 | |
1442 | cache_list_ptr->weight = ntohs(cache_identity->weight); | |
1443 | break; | |
1444 | ||
1445 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1446 | ||
1447 | cache_mask_info = (struct cache_mask_info_t *) ptr; | |
1448 | ||
1449 | /* The mask assignment has an undocumented variable length entry here */ | |
1450 | ||
1451 | if (ntohl(cache_mask_info->num1) == 3) { | |
1452 | ||
1453 | cache_mask_identity = (struct wccp2_cache_mask_identity_info_t *) ptr; | |
1454 | ||
1455 | ptr += sizeof(struct wccp2_cache_mask_identity_info_t); | |
0b0cfcf2 | 1456 | |
2adffc6f | 1457 | memcpy(&cache_address, &cache_mask_identity->addr, sizeof(struct in_addr)); |
b7d249f9 | 1458 | } else { |
1459 | ||
1460 | ptr += sizeof(struct cache_mask_info_t); | |
1461 | ||
2adffc6f | 1462 | memcpy(&cache_address, &cache_mask_info->addr, sizeof(struct in_addr)); |
b7d249f9 | 1463 | } |
0b0cfcf2 | 1464 | |
b7d249f9 | 1465 | cache_list_ptr->weight = 0; |
1466 | break; | |
1467 | ||
1468 | default: | |
1469 | fatalf("Unknown Wccp2 assignment method\n"); | |
1470 | } | |
0b0cfcf2 | 1471 | |
1472 | /* Update the cache list */ | |
1473 | cache_list_ptr->cache_ip = cache_address; | |
b7d249f9 | 1474 | |
0b0cfcf2 | 1475 | cache_list_ptr->next = (wccp2_cache_list_t*) xcalloc(1, sizeof(struct wccp2_cache_list_t)); |
b7d249f9 | 1476 | |
0b0cfcf2 | 1477 | cache_list_ptr = cache_list_ptr->next; |
b7d249f9 | 1478 | |
0b0cfcf2 | 1479 | cache_list_ptr->next = NULL; |
1480 | ||
bf8fe701 | 1481 | debugs (80, 5, "checking cache list: (" << std::hex << cache_address.s_addr << ":" << router_list_ptr->local_ip.s_addr << ")"); |
b7d249f9 | 1482 | |
0b0cfcf2 | 1483 | /* Check to see if it's the master, or us */ |
1484 | ||
1485 | if (cache_address.s_addr == router_list_ptr->local_ip.s_addr) { | |
1486 | found = 1; | |
1487 | } | |
1488 | ||
1489 | if (cache_address.s_addr < router_list_ptr->local_ip.s_addr) { | |
1490 | service_list_ptr->lowest_ip = 0; | |
1491 | } | |
1492 | } | |
1493 | } else { | |
bf8fe701 | 1494 | debugs(80, 5, "Adding ourselves as the only cache"); |
0b0cfcf2 | 1495 | |
1496 | /* Update the cache list */ | |
1497 | cache_list_ptr->cache_ip = router_list_ptr->local_ip; | |
1498 | ||
1499 | cache_list_ptr->next = (wccp2_cache_list_t*) xcalloc(1, sizeof(struct wccp2_cache_list_t)); | |
1500 | cache_list_ptr = cache_list_ptr->next; | |
1501 | cache_list_ptr->next = NULL; | |
1502 | ||
b7d249f9 | 1503 | service_list_ptr->lowest_ip = 1; |
0b0cfcf2 | 1504 | found = 1; |
1505 | num_caches = 1; | |
1506 | } | |
1507 | ||
264096e2 | 1508 | wccp2SortCacheList(&router_list_ptr->cache_list_head); |
1509 | ||
0b0cfcf2 | 1510 | router_list_ptr->num_caches = htonl(num_caches); |
1511 | ||
1512 | if ((found == 1) && (service_list_ptr->lowest_ip == 1)) { | |
1513 | if (ntohl(router_view_header->change_number) != router_list_ptr->member_change) { | |
bf8fe701 | 1514 | debugs(80, 4, "Change detected - queueing up new assignment"); |
0b0cfcf2 | 1515 | router_list_ptr->member_change = ntohl(router_view_header->change_number); |
c1f55201 | 1516 | eventDelete(wccp2AssignBuckets, NULL); |
1517 | eventAdd("wccp2AssignBuckets", wccp2AssignBuckets, NULL, 15.0, 1); | |
b7d249f9 | 1518 | } else { |
4a7a3d56 | 1519 | debugs(80, 5, "Change not detected (" << ntohl(router_view_header->change_number) << " = " << router_list_ptr->member_change << ")"); |
0b0cfcf2 | 1520 | } |
1521 | } else { | |
b7d249f9 | 1522 | eventDelete(wccp2AssignBuckets, NULL); |
bf8fe701 | 1523 | debugs(80, 5, "I am not the lowest ip cache - not assigning buckets"); |
0b0cfcf2 | 1524 | } |
1525 | } | |
1526 | ||
1527 | static void | |
1528 | wccp2HereIam(void *voidnotused) | |
1529 | { | |
1530 | ||
1531 | struct wccp2_service_list_t *service_list_ptr; | |
1532 | ||
1533 | struct wccp2_router_list_t *router_list_ptr; | |
1534 | ||
b7d249f9 | 1535 | struct wccp2_identity_info_t *wccp2_identity_info_ptr; |
1536 | ||
1537 | struct wccp2_mask_identity_info_t *wccp2_mask_identity_info_ptr; | |
1538 | ||
b7ac5457 | 1539 | Ip::Address router; |
0b0cfcf2 | 1540 | |
bf8fe701 | 1541 | debugs(80, 6, "wccp2HereIam: Called"); |
0b0cfcf2 | 1542 | |
1543 | if (wccp2_connected == 0) { | |
e0236918 | 1544 | debugs(80, DBG_IMPORTANT, "wccp2HereIam: wccp2 socket closed. Shutting down WCCP2"); |
0b0cfcf2 | 1545 | return; |
1546 | } | |
1547 | ||
bef81ea5 | 1548 | /* Wait if store dirs are rebuilding */ |
1549 | if (StoreController::store_dirs_rebuilding && Config.Wccp2.rebuildwait) { | |
f67332d3 | 1550 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 1.0, 1); |
1551 | return; | |
1552 | } | |
1553 | ||
cc192b50 | 1554 | router.SetPort(WCCP_PORT); |
0b0cfcf2 | 1555 | |
1556 | /* for each router on each service send a packet */ | |
1557 | service_list_ptr = wccp2_service_list_head; | |
1558 | ||
1559 | while (service_list_ptr != NULL) { | |
bf8fe701 | 1560 | debugs(80, 5, "wccp2HereIam: sending to service id " << service_list_ptr->info.service_id); |
0b0cfcf2 | 1561 | |
1562 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
cc192b50 | 1563 | router = router_list_ptr->router_sendto_address; |
0b0cfcf2 | 1564 | |
1565 | /* Set the cache id (ip) */ | |
b7d249f9 | 1566 | |
1567 | switch (Config.Wccp2.assignment_method) { | |
1568 | ||
1569 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1570 | ||
1571 | wccp2_identity_info_ptr = (struct wccp2_identity_info_t *) service_list_ptr->wccp2_identity_info_ptr; | |
1572 | wccp2_identity_info_ptr->cache_identity.addr = router_list_ptr->local_ip; | |
1573 | break; | |
1574 | ||
1575 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1576 | ||
1577 | wccp2_mask_identity_info_ptr = (struct wccp2_mask_identity_info_t *) service_list_ptr->wccp2_identity_info_ptr; | |
1578 | wccp2_mask_identity_info_ptr->cache_identity.addr = router_list_ptr->local_ip; | |
1579 | break; | |
1580 | ||
1581 | default: | |
1582 | fatalf("Unknown Wccp2 assignment method\n"); | |
1583 | } | |
1584 | ||
0b0cfcf2 | 1585 | /* Security update, if needed */ |
1586 | ||
1587 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
1588 | 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); | |
1589 | } | |
1590 | ||
4a7a3d56 | 1591 | debugs(80, 3, "Sending HereIam packet size " << service_list_ptr->wccp_packet_size); |
0b0cfcf2 | 1592 | /* Send the packet */ |
0b0cfcf2 | 1593 | |
c1f55201 | 1594 | if (wccp2_numrouters > 1) { |
1595 | comm_udp_sendto(theWccp2Connection, | |
cc192b50 | 1596 | router, |
c1f55201 | 1597 | &service_list_ptr->wccp_packet, |
1598 | service_list_ptr->wccp_packet_size); | |
1599 | } else { | |
1600 | send(theWccp2Connection, | |
1601 | &service_list_ptr->wccp_packet, | |
1602 | service_list_ptr->wccp_packet_size, | |
1603 | 0); | |
1604 | } | |
0b0cfcf2 | 1605 | } |
1606 | ||
1607 | service_list_ptr = service_list_ptr->next; | |
1608 | } | |
1609 | ||
f67332d3 | 1610 | eventAdd("wccp2HereIam", wccp2HereIam, NULL, 10.0, 1); |
0b0cfcf2 | 1611 | } |
1612 | ||
1613 | static void | |
1614 | wccp2AssignBuckets(void *voidnotused) | |
1615 | { | |
1616 | ||
1617 | struct wccp2_service_list_t *service_list_ptr; | |
1618 | ||
1619 | struct wccp2_router_list_t *router_list_ptr; | |
1620 | ||
1621 | struct wccp2_cache_list_t *cache_list_ptr; | |
1622 | char wccp_packet[WCCP_RESPONSE_SIZE]; | |
b7d249f9 | 1623 | short int offset, saved_offset, assignment_offset, alt_assignment_offset; |
0b0cfcf2 | 1624 | |
1625 | struct sockaddr_in router; | |
1626 | int router_len; | |
1627 | int bucket_counter; | |
b7d249f9 | 1628 | uint32_t service_flags; |
f45dd259 | 1629 | unsigned short port = WCCP_PORT; |
0b0cfcf2 | 1630 | |
1631 | /* Packet segments */ | |
1632 | ||
c898ced1 | 1633 | struct wccp2_message_header_t *main_header; |
0b0cfcf2 | 1634 | |
1635 | struct wccp2_security_md5_t *security = NULL; | |
1636 | /* service from service struct */ | |
1637 | ||
1638 | struct wccp2_item_header_t *assignment_header; | |
1639 | ||
b7d249f9 | 1640 | struct wccp2_item_header_t *alt_assignment_type_header = NULL; |
1641 | ||
0b0cfcf2 | 1642 | struct assignment_key_t *assignment_key; |
1643 | /* number of routers */ | |
1644 | ||
1645 | struct wccp2_router_assign_element_t *router_assign; | |
1646 | /* number of caches */ | |
1647 | ||
2adffc6f | 1648 | struct in_addr *cache_address; |
b7d249f9 | 1649 | /* Alternative assignement mask/values */ |
1650 | int num_maskval; | |
1651 | ||
1652 | struct wccp2_mask_element_t *mask_element; | |
1653 | ||
1654 | struct wccp2_value_element_t *value_element; | |
1655 | int valuecounter, value; | |
0b0cfcf2 | 1656 | char *buckets; |
1657 | ||
b7d249f9 | 1658 | assignment_offset = alt_assignment_offset = 0; |
1659 | ||
0b0cfcf2 | 1660 | router_len = sizeof(router); |
1661 | memset(&router, '\0', router_len); | |
1662 | router.sin_family = AF_INET; | |
1663 | router.sin_port = htons(port); | |
1664 | ||
1665 | /* Start main header - fill in length later */ | |
1666 | offset = 0; | |
1667 | ||
c898ced1 | 1668 | main_header = (struct wccp2_message_header_t *) &wccp_packet[offset]; |
0b0cfcf2 | 1669 | main_header->type = htonl(WCCP2_REDIRECT_ASSIGN); |
1670 | main_header->version = htons(WCCP2_VERSION); | |
1671 | ||
bf8fe701 | 1672 | debugs(80, 2, "Running wccp2AssignBuckets"); |
0b0cfcf2 | 1673 | service_list_ptr = wccp2_service_list_head; |
1674 | ||
1675 | while (service_list_ptr != NULL) { | |
1676 | /* If we're not the lowest, we don't need to worry */ | |
1677 | ||
1678 | if (service_list_ptr->lowest_ip == 0) { | |
1679 | /* XXX eww */ | |
1680 | service_list_ptr = service_list_ptr->next; | |
1681 | continue; | |
1682 | } | |
1683 | ||
1684 | /* reset the offset */ | |
1685 | ||
c898ced1 | 1686 | offset = sizeof(struct wccp2_message_header_t); |
0b0cfcf2 | 1687 | |
1688 | /* build packet header from hereIam packet */ | |
1689 | /* Security info */ | |
1690 | /* XXX this should be made more generic! */ | |
1691 | /* XXX and I hate magic numbers! */ | |
1692 | switch (service_list_ptr->wccp2_security_type) { | |
1693 | ||
1694 | case WCCP2_NO_SECURITY: | |
1695 | ||
1696 | security = (struct wccp2_security_md5_t *) &wccp_packet[offset]; | |
1697 | memcpy(security, service_list_ptr->security_info, 8); | |
1698 | offset += 8; | |
1699 | break; | |
1700 | ||
1701 | case WCCP2_MD5_SECURITY: | |
1702 | ||
1703 | security = (struct wccp2_security_md5_t *) &wccp_packet[offset]; | |
1704 | ||
1705 | memcpy(security, service_list_ptr->security_info, sizeof(struct wccp2_security_md5_t)); | |
1706 | ||
1707 | offset += sizeof(struct wccp2_security_md5_t); | |
1708 | break; | |
1709 | ||
1710 | default: | |
1711 | fatalf("Unknown Wccp2 security type\n"); | |
1712 | } | |
1713 | ||
1714 | /* Service info */ | |
1715 | ||
1716 | memcpy(&wccp_packet[offset], service_list_ptr->service_info, sizeof(struct wccp2_service_info_t)); | |
1717 | ||
1718 | offset += sizeof(struct wccp2_service_info_t); | |
1719 | ||
1720 | /* assignment header - fill in length later */ | |
1721 | ||
1722 | assignment_header = (struct wccp2_item_header_t *) &wccp_packet[offset]; | |
1723 | ||
b7d249f9 | 1724 | switch (Config.Wccp2.assignment_method) { |
0b0cfcf2 | 1725 | |
b7d249f9 | 1726 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
1727 | assignment_header->type = htons(WCCP2_REDIRECT_ASSIGNMENT); | |
1728 | ||
1729 | offset += sizeof(struct wccp2_item_header_t); | |
1730 | assignment_offset = offset; | |
1731 | break; | |
1732 | ||
1733 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
1734 | assignment_header->type = htons(WCCP2_ALT_ASSIGNMENT); | |
1735 | ||
1736 | offset += sizeof(struct wccp2_item_header_t); | |
1737 | assignment_offset = offset; | |
1738 | ||
1739 | /* The alternative assignment has an extra header, fill in length later */ | |
1740 | ||
1741 | alt_assignment_type_header = (struct wccp2_item_header_t *) &wccp_packet[offset]; | |
1742 | alt_assignment_type_header->type = htons(WCCP2_MASK_ASSIGNMENT); | |
1743 | ||
1744 | offset += sizeof(struct wccp2_item_header_t); | |
1745 | alt_assignment_offset = offset; | |
1746 | ||
1747 | break; | |
1748 | ||
1749 | default: | |
1750 | fatalf("Unknown Wccp2 assignment method\n"); | |
1751 | } | |
0b0cfcf2 | 1752 | |
1753 | /* Assignment key - fill in master ip later */ | |
1754 | ||
1755 | assignment_key = (struct assignment_key_t *) &wccp_packet[offset]; | |
1756 | ||
1757 | assignment_key->master_number = htonl(++service_list_ptr->change_num); | |
1758 | ||
1759 | offset += sizeof(struct assignment_key_t); | |
1760 | ||
1761 | /* Number of routers */ | |
41d00cd3 | 1762 | memcpy(&wccp_packet[offset], &service_list_ptr->num_routers, sizeof(service_list_ptr->num_routers)); |
0b0cfcf2 | 1763 | |
1764 | offset += sizeof(service_list_ptr->num_routers); | |
1765 | ||
1766 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
1767 | ||
1768 | /* Add routers */ | |
1769 | ||
1770 | router_assign = (struct wccp2_router_assign_element_t *) &wccp_packet[offset]; | |
1771 | router_assign->router_address = router_list_ptr->info->router_address; | |
1772 | router_assign->received_id = router_list_ptr->info->received_id; | |
1773 | router_assign->change_number = htonl(router_list_ptr->member_change); | |
1774 | ||
1775 | offset += sizeof(struct wccp2_router_assign_element_t); | |
1776 | } | |
1777 | ||
1778 | saved_offset = offset; | |
1779 | ||
1780 | for (router_list_ptr = &service_list_ptr->router_list_head; router_list_ptr->next != NULL; router_list_ptr = router_list_ptr->next) { | |
b7d249f9 | 1781 | unsigned long *weight = (unsigned long *)xcalloc(sizeof(*weight), ntohl(router_list_ptr->num_caches)); |
1782 | unsigned long total_weight = 0; | |
1783 | int num_caches = ntohl(router_list_ptr->num_caches); | |
f16fbc82 | 1784 | |
0b0cfcf2 | 1785 | offset = saved_offset; |
1786 | ||
b7d249f9 | 1787 | switch (Config.Wccp2.assignment_method) { |
1788 | ||
1789 | case WCCP2_ASSIGNMENT_METHOD_HASH: | |
1790 | /* Number of caches */ | |
41d00cd3 | 1791 | memcpy(&wccp_packet[offset], &router_list_ptr->num_caches, sizeof(router_list_ptr->num_caches)); |
b7d249f9 | 1792 | offset += sizeof(router_list_ptr->num_caches); |
1793 | ||
1794 | if (num_caches) { | |
1795 | int cache; | |
1796 | ||
14942edd | 1797 | for (cache = 0, cache_list_ptr = &router_list_ptr->cache_list_head; cache_list_ptr->next; cache_list_ptr = cache_list_ptr->next, ++cache) { |
b7d249f9 | 1798 | /* add caches */ |
0b0cfcf2 | 1799 | |
2adffc6f | 1800 | cache_address = (struct in_addr *) &wccp_packet[offset]; |
0b0cfcf2 | 1801 | |
41d00cd3 | 1802 | memcpy(cache_address, &cache_list_ptr->cache_ip, sizeof(struct in_addr)); |
b7d249f9 | 1803 | total_weight += cache_list_ptr->weight << 12; |
1804 | weight[cache] = cache_list_ptr->weight << 12; | |
0b0cfcf2 | 1805 | |
2adffc6f | 1806 | offset += sizeof(struct in_addr); |
b7d249f9 | 1807 | } |
0b0cfcf2 | 1808 | } |
0b0cfcf2 | 1809 | |
b7d249f9 | 1810 | /* Add buckets */ |
1811 | buckets = (char *) &wccp_packet[offset]; | |
1812 | ||
1813 | memset(buckets, '\0', WCCP_BUCKETS); | |
1814 | ||
1815 | if (num_caches != 0) { | |
1816 | if (total_weight == 0) { | |
14942edd | 1817 | for (bucket_counter = 0; bucket_counter < WCCP_BUCKETS; ++bucket_counter) { |
b7d249f9 | 1818 | buckets[bucket_counter] = (char) (bucket_counter % num_caches); |
1819 | } | |
1820 | } else { | |
1821 | unsigned long *assigned = (unsigned long *)xcalloc(sizeof(*assigned), num_caches); | |
1822 | unsigned long done = 0; | |
1823 | int cache = -1; | |
1824 | unsigned long per_bucket = total_weight / WCCP_BUCKETS; | |
1825 | ||
14942edd | 1826 | for (bucket_counter = 0; bucket_counter < WCCP_BUCKETS; ++bucket_counter) { |
b7d249f9 | 1827 | int n; |
1828 | unsigned long step; | |
1829 | ||
5e263176 | 1830 | for (n = num_caches; n; --n) { |
14942edd | 1831 | ++cache; |
b7d249f9 | 1832 | |
1833 | if (cache >= num_caches) | |
1834 | cache = 0; | |
1835 | ||
1836 | if (!weight[cache]) { | |
14942edd | 1837 | ++n; |
b7d249f9 | 1838 | continue; |
1839 | } | |
1840 | ||
1841 | if (assigned[cache] <= done) | |
1842 | break; | |
1843 | } | |
1844 | ||
1845 | buckets[bucket_counter] = (char) cache; | |
1846 | step = per_bucket * total_weight / weight[cache]; | |
1847 | assigned[cache] += step; | |
1848 | done += per_bucket; | |
1849 | } | |
1850 | ||
1851 | safe_free(assigned); | |
1852 | } | |
1853 | } | |
0b0cfcf2 | 1854 | |
b7d249f9 | 1855 | offset += (WCCP_BUCKETS * sizeof(char)); |
1856 | safe_free(weight); | |
1857 | break; | |
0b0cfcf2 | 1858 | |
b7d249f9 | 1859 | case WCCP2_ASSIGNMENT_METHOD_MASK: |
1860 | num_maskval = htonl(1); | |
41d00cd3 | 1861 | memcpy(&wccp_packet[offset], &num_maskval, sizeof(int)); |
b7d249f9 | 1862 | offset += sizeof(int); |
1863 | ||
1864 | mask_element = (struct wccp2_mask_element_t *) &wccp_packet[offset]; | |
1865 | service_flags = ntohl(service_list_ptr->service_info->service_flags); | |
1866 | ||
1867 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { | |
1868 | mask_element->source_ip_mask = htonl(0x00001741); | |
1869 | mask_element->dest_ip_mask = 0; | |
1870 | mask_element->source_port_mask = 0; | |
1871 | mask_element->dest_port_mask = 0; | |
1872 | } 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)) { | |
1873 | mask_element->source_ip_mask = 0; | |
1874 | mask_element->dest_ip_mask = htonl(0x00001741); | |
1875 | mask_element->source_port_mask = 0; | |
1876 | mask_element->dest_port_mask = 0; | |
1877 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { | |
1878 | mask_element->source_ip_mask = 0; | |
1879 | mask_element->dest_ip_mask = 0; | |
1880 | mask_element->source_port_mask = htons(0x1741); | |
1881 | mask_element->dest_port_mask = 0; | |
1882 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { | |
1883 | mask_element->source_ip_mask = 0; | |
1884 | mask_element->dest_ip_mask = 0; | |
1885 | mask_element->source_port_mask = 0; | |
1886 | mask_element->dest_port_mask = htons(0x1741); | |
1887 | } else { | |
1888 | fatalf("Unknown service hash method\n"); | |
1889 | } | |
1890 | ||
1891 | mask_element->number_values = htonl(64); | |
1892 | ||
1893 | offset += sizeof(struct wccp2_mask_element_t); | |
1894 | ||
1895 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1896 | value = 0; | |
1897 | ||
14942edd | 1898 | for (valuecounter = 0; valuecounter < 64; ++valuecounter) { |
b7d249f9 | 1899 | |
1900 | value_element = (struct wccp2_value_element_t *) &wccp_packet[offset]; | |
1901 | ||
25e26086 | 1902 | /* Update the value according the the "correct" formula */ |
1903 | ||
14942edd | 1904 | for (; (value & 0x1741) != value; ++value) { |
25e26086 | 1905 | assert(value <= 0x1741); |
1906 | } | |
1907 | ||
b7d249f9 | 1908 | if ((service_flags & WCCP2_SERVICE_SRC_IP_HASH) || (service_flags & WCCP2_SERVICE_SRC_IP_ALT_HASH)) { |
1909 | value_element->source_ip_value = htonl(value); | |
1910 | value_element->dest_ip_value = 0; | |
1911 | value_element->source_port_value = 0; | |
1912 | value_element->dest_port_value = 0; | |
1913 | } 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)) { | |
1914 | value_element->source_ip_value = 0; | |
1915 | value_element->dest_ip_value = htonl(value); | |
1916 | value_element->source_port_value = 0; | |
1917 | value_element->dest_port_value = 0; | |
1918 | } else if ((service_flags & WCCP2_SERVICE_SRC_PORT_HASH) || (service_flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH)) { | |
1919 | value_element->source_ip_value = 0; | |
1920 | value_element->dest_ip_value = 0; | |
1921 | value_element->source_port_value = htons(value); | |
1922 | value_element->dest_port_value = 0; | |
1923 | } else if ((service_flags & WCCP2_SERVICE_DST_PORT_HASH) || (service_flags & WCCP2_SERVICE_DST_PORT_ALT_HASH)) { | |
1924 | value_element->source_ip_value = 0; | |
1925 | value_element->dest_ip_value = 0; | |
1926 | value_element->source_port_value = 0; | |
1927 | value_element->dest_port_value = htons(value); | |
1928 | } else { | |
1929 | fatalf("Unknown service hash method\n"); | |
1930 | } | |
1931 | ||
1932 | value_element->cache_ip = cache_list_ptr->cache_ip; | |
1933 | ||
1934 | offset += sizeof(struct wccp2_value_element_t); | |
14942edd | 1935 | ++value; |
b7d249f9 | 1936 | |
1937 | /* Assign the next value to the next cache */ | |
25e26086 | 1938 | |
b7d249f9 | 1939 | if ((cache_list_ptr->next) && (cache_list_ptr->next->next)) |
1940 | cache_list_ptr = cache_list_ptr->next; | |
1941 | else | |
1942 | cache_list_ptr = &router_list_ptr->cache_list_head; | |
1943 | } | |
0b0cfcf2 | 1944 | |
b7d249f9 | 1945 | /* Fill in length */ |
1946 | alt_assignment_type_header->length = htons(offset - alt_assignment_offset); | |
1947 | ||
1948 | break; | |
1949 | ||
1950 | default: | |
1951 | fatalf("Unknown Wccp2 assignment method\n"); | |
1952 | } | |
1953 | ||
1954 | /* Fill in length */ | |
0b0cfcf2 | 1955 | |
b7d249f9 | 1956 | assignment_header->length = htons(offset - assignment_offset); |
0b0cfcf2 | 1957 | |
1958 | /* Fill in assignment key */ | |
1959 | assignment_key->master_ip = router_list_ptr->local_ip; | |
1960 | ||
1961 | /* finish length */ | |
1962 | ||
c898ced1 | 1963 | main_header->length = htons(offset - sizeof(struct wccp2_message_header_t)); |
0b0cfcf2 | 1964 | |
1965 | /* set the destination address */ | |
1966 | router.sin_addr = router_list_ptr->router_sendto_address; | |
1967 | ||
1968 | /* Security update, if needed */ | |
1969 | ||
1970 | if (service_list_ptr->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
1971 | wccp2_update_md5_security(service_list_ptr->wccp_password, (char *) security, wccp_packet, offset); | |
1972 | } | |
1973 | ||
1974 | if (ntohl(router_list_ptr->num_caches)) { | |
1975 | /* send packet */ | |
c1f55201 | 1976 | |
1977 | if (wccp2_numrouters > 1) { | |
26ac0430 | 1978 | /* FIXME INET6 : drop temp conversion */ |
b7ac5457 | 1979 | Ip::Address tmp_rtr(router); |
c1f55201 | 1980 | comm_udp_sendto(theWccp2Connection, |
cc192b50 | 1981 | tmp_rtr, |
c1f55201 | 1982 | &wccp_packet, |
1983 | offset); | |
1984 | } else { | |
1985 | send(theWccp2Connection, | |
1986 | &wccp_packet, | |
1987 | offset, | |
1988 | 0); | |
1989 | } | |
0b0cfcf2 | 1990 | } |
1991 | } | |
1992 | ||
1993 | service_list_ptr = service_list_ptr->next; | |
1994 | } | |
1995 | } | |
1996 | ||
0b0cfcf2 | 1997 | /* |
1998 | * Configuration option parsing code | |
1999 | */ | |
2000 | ||
e313ab0a AJ |
2001 | /** |
2002 | * Parse wccp2_return_method and wccp2_forwarding_method options | |
72e2b394 | 2003 | * they can be '1' aka 'gre' or '2' aka 'l2' |
e313ab0a AJ |
2004 | * repesenting the integer numeric of the same. |
2005 | */ | |
2006 | void | |
2007 | parse_wccp2_method(int *method) | |
2008 | { | |
2009 | char *t; | |
2010 | ||
2011 | /* Snarf the method */ | |
2012 | if ((t = strtok(NULL, w_space)) == NULL) { | |
21ec1b94 | 2013 | debugs(80, DBG_CRITICAL, "wccp2_*_method: missing setting."); |
e313ab0a AJ |
2014 | self_destruct(); |
2015 | } | |
2016 | ||
2017 | /* update configuration if its valid */ | |
451c4786 | 2018 | if (strcmp(t, "gre") == 0 || strcmp(t, "1") == 0) { |
21ec1b94 | 2019 | *method = WCCP2_METHOD_GRE; |
451c4786 | 2020 | } else if (strcmp(t, "l2") == 0 || strcmp(t, "2") == 0) { |
21ec1b94 | 2021 | *method = WCCP2_METHOD_L2; |
e313ab0a | 2022 | } else { |
21ec1b94 | 2023 | debugs(80, DBG_CRITICAL, "wccp2_*_method: unknown setting, got " << t ); |
e313ab0a AJ |
2024 | self_destruct(); |
2025 | } | |
2026 | } | |
2027 | ||
2028 | void | |
2029 | dump_wccp2_method(StoreEntry * e, const char *label, int v) | |
2030 | { | |
26ac0430 | 2031 | switch (v) { |
451c4786 AJ |
2032 | case WCCP2_METHOD_GRE: |
2033 | storeAppendPrintf(e, "%s gre\n", label); | |
e313ab0a | 2034 | break; |
451c4786 AJ |
2035 | case WCCP2_METHOD_L2: |
2036 | storeAppendPrintf(e, "%s l2\n", label); | |
e313ab0a AJ |
2037 | break; |
2038 | default: | |
21ec1b94 | 2039 | debugs(80, DBG_CRITICAL, "FATAL: WCCPv2 configured method (" << v << ") is not valid."); |
e313ab0a AJ |
2040 | self_destruct(); |
2041 | } | |
2042 | } | |
2043 | ||
2044 | void | |
2045 | free_wccp2_method(int *v) | |
2046 | { } | |
2047 | ||
451c4786 AJ |
2048 | /** |
2049 | * Parse wccp2_assignment_method option | |
2050 | * they can be '1' aka 'hash' or '2' aka 'mask' | |
2051 | * repesenting the integer numeric of the same. | |
2052 | */ | |
2053 | void | |
72e2b394 | 2054 | parse_wccp2_amethod(int *method) |
451c4786 AJ |
2055 | { |
2056 | char *t; | |
2057 | ||
2058 | /* Snarf the method */ | |
2059 | if ((t = strtok(NULL, w_space)) == NULL) { | |
2060 | debugs(80, DBG_CRITICAL, "wccp2_assignment_method: missing setting."); | |
2061 | self_destruct(); | |
2062 | } | |
2063 | ||
2064 | /* update configuration if its valid */ | |
2065 | if (strcmp(t, "hash") == 0 || strcmp(t, "1") == 0) { | |
2066 | *method = WCCP2_ASSIGNMENT_METHOD_HASH; | |
2067 | } else if (strcmp(t, "mask") == 0 || strcmp(t, "2") == 0) { | |
2068 | *method = WCCP2_ASSIGNMENT_METHOD_MASK; | |
2069 | } else { | |
2070 | debugs(80, DBG_CRITICAL, "wccp2_assignment_method: unknown setting, got " << t ); | |
2071 | self_destruct(); | |
2072 | } | |
2073 | } | |
2074 | ||
2075 | void | |
2076 | dump_wccp2_amethod(StoreEntry * e, const char *label, int v) | |
2077 | { | |
26ac0430 | 2078 | switch (v) { |
451c4786 AJ |
2079 | case WCCP2_ASSIGNMENT_METHOD_HASH: |
2080 | storeAppendPrintf(e, "%s hash\n", label); | |
2081 | break; | |
2082 | case WCCP2_ASSIGNMENT_METHOD_MASK: | |
2083 | storeAppendPrintf(e, "%s mask\n", label); | |
2084 | break; | |
2085 | default: | |
2086 | debugs(80, DBG_CRITICAL, "FATAL: WCCPv2 configured " << label << " (" << v << ") is not valid."); | |
2087 | self_destruct(); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | void | |
2092 | free_wccp2_amethod(int *v) | |
2093 | { } | |
2094 | ||
0b0cfcf2 | 2095 | /* |
2096 | * Format: | |
2097 | * | |
2098 | * wccp2_service {standard|dynamic} {id} (password=password) | |
2099 | */ | |
2100 | void | |
2101 | parse_wccp2_service(void *v) | |
2102 | { | |
2103 | char *t; | |
2104 | int service = 0; | |
2105 | int service_id = 0; | |
2106 | int security_type = WCCP2_NO_SECURITY; | |
2107 | char wccp_password[WCCP2_PASSWORD_LEN + 1]; | |
2108 | ||
2109 | if (wccp2_connected == 1) { | |
e0236918 | 2110 | debugs(80, DBG_IMPORTANT, "WCCPv2: Somehow reparsing the configuration without having shut down WCCP! Try reloading squid again."); |
0b0cfcf2 | 2111 | return; |
2112 | } | |
2113 | ||
2114 | /* Snarf the type */ | |
2115 | if ((t = strtok(NULL, w_space)) == NULL) { | |
fa84c01d | 2116 | debugs(80, DBG_CRITICAL, "wccp2ParseServiceInfo: missing service info type (standard|dynamic)"); |
0b0cfcf2 | 2117 | self_destruct(); |
2118 | } | |
2119 | ||
2120 | if (strcmp(t, "standard") == 0) { | |
2121 | service = WCCP2_SERVICE_STANDARD; | |
2122 | } else if (strcmp(t, "dynamic") == 0) { | |
2123 | service = WCCP2_SERVICE_DYNAMIC; | |
2124 | } else { | |
fa84c01d | 2125 | debugs(80, DBG_CRITICAL, "wccp2ParseServiceInfo: bad service info type (expected standard|dynamic, got " << t << ")"); |
0b0cfcf2 | 2126 | self_destruct(); |
2127 | } | |
2128 | ||
2129 | /* Snarf the ID */ | |
2130 | service_id = GetInteger(); | |
2131 | ||
2132 | if (service_id < 0 || service_id > 255) { | |
30c48b1a | 2133 | debugs(80, DBG_CRITICAL, "ERROR: invalid WCCP service id " << service_id << " (must be between 0 .. 255)"); |
0b0cfcf2 | 2134 | self_destruct(); |
2135 | } | |
2136 | ||
2137 | memset(wccp_password, 0, sizeof(wccp_password)); | |
2138 | /* Handle password, if any */ | |
2139 | ||
2140 | if ((t = strtok(NULL, w_space)) != NULL) { | |
2141 | if (strncmp(t, "password=", 9) == 0) { | |
2142 | security_type = WCCP2_MD5_SECURITY; | |
2143 | strncpy(wccp_password, t + 9, WCCP2_PASSWORD_LEN); | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | /* Create a placeholder service record */ | |
2148 | wccp2_add_service_list(service, service_id, 0, 0, 0, empty_portlist, security_type, wccp_password); | |
2149 | } | |
2150 | ||
2151 | void | |
2152 | dump_wccp2_service(StoreEntry * e, const char *label, void *v) | |
2153 | { | |
2154 | ||
2155 | struct wccp2_service_list_t *srv; | |
2156 | srv = wccp2_service_list_head; | |
2157 | ||
2158 | while (srv != NULL) { | |
bf8fe701 | 2159 | debugs(80, 3, "dump_wccp2_service: id " << srv->info.service_id << ", type " << srv->info.service); |
0b0cfcf2 | 2160 | storeAppendPrintf(e, "%s %s %d", label, |
2161 | (srv->info.service == WCCP2_SERVICE_DYNAMIC) ? "dynamic" : "standard", | |
2162 | srv->info.service_id); | |
2163 | ||
2164 | if (srv->wccp2_security_type == WCCP2_MD5_SECURITY) { | |
2165 | storeAppendPrintf(e, " %s", srv->wccp_password); | |
2166 | } | |
2167 | ||
c208fd0e | 2168 | storeAppendPrintf(e, "\n"); |
2169 | ||
0b0cfcf2 | 2170 | srv = srv->next; |
2171 | } | |
2172 | } | |
2173 | ||
2174 | void | |
2175 | free_wccp2_service(void *v) | |
2176 | {} | |
2177 | ||
2178 | int | |
2179 | check_null_wccp2_service(void *v) | |
2180 | { | |
2181 | return !wccp2_service_list_head; | |
2182 | } | |
2183 | ||
2184 | /* | |
2185 | * Format: | |
2186 | * | |
2187 | * wccp2_service_info {id} stuff.. | |
2188 | * | |
2189 | * Where stuff is: | |
2190 | * | |
2191 | * + flags=flag,flag,flag.. | |
2192 | * + proto=protocol (tcp|udp) | |
2193 | * + ports=port,port,port (up to a max of 8) | |
2194 | * + priority=priority (0->255) | |
2195 | * | |
2196 | * The flags here are: | |
2197 | * src_ip_hash, dst_ip_hash, source_port_hash, dst_port_hash, ports_defined, | |
2198 | * ports_source, src_ip_alt_hash, dst_ip_alt_hash, src_port_alt_hash, dst_port_alt_hash | |
2199 | */ | |
2200 | static int | |
2201 | parse_wccp2_service_flags(char *flags) | |
2202 | { | |
2203 | char *tmp, *tmp2; | |
2204 | char *flag; | |
2205 | int retflag = 0; | |
2206 | ||
2207 | if (!flags) { | |
2208 | return 0; | |
2209 | } | |
2210 | ||
2211 | tmp = xstrdup(flags); | |
2212 | tmp2 = tmp; | |
2213 | ||
2214 | flag = strsep(&tmp2, ","); | |
2215 | ||
2216 | while (flag) { | |
2217 | if (strcmp(flag, "src_ip_hash") == 0) { | |
2218 | retflag |= WCCP2_SERVICE_SRC_IP_HASH; | |
2219 | } else if (strcmp(flag, "dst_ip_hash") == 0) { | |
2220 | retflag |= WCCP2_SERVICE_DST_IP_HASH; | |
2221 | } else if (strcmp(flag, "source_port_hash") == 0) { | |
b7d249f9 | 2222 | retflag |= WCCP2_SERVICE_SRC_PORT_HASH; |
0b0cfcf2 | 2223 | } else if (strcmp(flag, "dst_port_hash") == 0) { |
2224 | retflag |= WCCP2_SERVICE_DST_PORT_HASH; | |
2225 | } else if (strcmp(flag, "ports_source") == 0) { | |
2226 | retflag |= WCCP2_SERVICE_PORTS_SOURCE; | |
2227 | } else if (strcmp(flag, "src_ip_alt_hash") == 0) { | |
2228 | retflag |= WCCP2_SERVICE_SRC_IP_ALT_HASH; | |
2229 | } else if (strcmp(flag, "dst_ip_alt_hash") == 0) { | |
2230 | retflag |= WCCP2_SERVICE_DST_IP_ALT_HASH; | |
2231 | } else if (strcmp(flag, "src_port_alt_hash") == 0) { | |
2232 | retflag |= WCCP2_SERVICE_SRC_PORT_ALT_HASH; | |
2233 | } else if (strcmp(flag, "dst_port_alt_hash") == 0) { | |
2234 | retflag |= WCCP2_SERVICE_DST_PORT_ALT_HASH; | |
2235 | } else { | |
2236 | fatalf("Unknown wccp2 service flag: %s\n", flag); | |
2237 | } | |
2238 | ||
2239 | flag = strsep(&tmp2, ","); | |
2240 | } | |
2241 | ||
2242 | xfree(tmp); | |
2243 | return retflag; | |
2244 | } | |
2245 | ||
2246 | static void | |
2247 | parse_wccp2_service_ports(char *options, int portlist[]) | |
2248 | { | |
2249 | int i = 0; | |
2250 | int p; | |
2251 | char *tmp, *tmp2, *port, *end; | |
2252 | ||
2253 | if (!options) { | |
2254 | return; | |
2255 | } | |
2256 | ||
2257 | tmp = xstrdup(options); | |
2258 | tmp2 = tmp; | |
2259 | ||
2260 | port = strsep(&tmp2, ","); | |
2261 | ||
2262 | while (port && i < WCCP2_NUMPORTS) { | |
2263 | p = strtol(port, &end, 0); | |
2264 | ||
2265 | if (p < 1 || p > 65535) { | |
2266 | fatalf("parse_wccp2_service_ports: port value '%s' isn't valid (1..65535)\n", port); | |
2267 | } | |
2268 | ||
2269 | portlist[i] = p; | |
14942edd | 2270 | ++i; |
0b0cfcf2 | 2271 | port = strsep(&tmp2, ","); |
2272 | } | |
2273 | ||
5355e54f | 2274 | if (i == WCCP2_NUMPORTS && port) { |
0b0cfcf2 | 2275 | fatalf("parse_wccp2_service_ports: too many ports (maximum: 8) in list '%s'\n", options); |
2276 | } | |
2277 | ||
2278 | xfree(tmp); | |
2279 | } | |
2280 | ||
2281 | void | |
2282 | parse_wccp2_service_info(void *v) | |
2283 | { | |
2284 | char *t, *end; | |
2285 | int service_id = 0; | |
2286 | int flags = 0; | |
2287 | int portlist[WCCP2_NUMPORTS]; | |
2288 | int protocol = -1; /* IPPROTO_TCP | IPPROTO_UDP */ | |
2289 | ||
2290 | struct wccp2_service_list_t *srv; | |
2291 | int priority = -1; | |
2292 | ||
2293 | if (wccp2_connected == 1) { | |
e0236918 | 2294 | debugs(80, DBG_IMPORTANT, "WCCPv2: Somehow reparsing the configuration without having shut down WCCP! Try reloading squid again."); |
0b0cfcf2 | 2295 | return; |
2296 | } | |
2297 | ||
bf8fe701 | 2298 | debugs(80, 5, "parse_wccp2_service_info: called"); |
a302ad3c | 2299 | memset(portlist, 0, sizeof(portlist)); |
0b0cfcf2 | 2300 | /* First argument: id */ |
2301 | service_id = GetInteger(); | |
2302 | ||
2303 | if (service_id < 0 || service_id > 255) { | |
30c48b1a | 2304 | debugs(80, DBG_CRITICAL, "ERROR: invalid WCCP service id " << service_id << " (must be between 0 .. 255)"); |
0b0cfcf2 | 2305 | self_destruct(); |
2306 | } | |
2307 | ||
2308 | /* Next: find the (hopefully!) existing service */ | |
2309 | srv = wccp2_get_service_by_id(WCCP2_SERVICE_DYNAMIC, service_id); | |
2310 | ||
2311 | if (srv == NULL) { | |
2312 | 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); | |
2313 | } | |
2314 | ||
2315 | /* Next: loop until we don't have any more tokens */ | |
2316 | while ((t = strtok(NULL, w_space)) != NULL) { | |
2317 | if (strncmp(t, "flags=", 6) == 0) { | |
2318 | /* XXX eww, string pointer math */ | |
2319 | flags = parse_wccp2_service_flags(t + 6); | |
2320 | } else if (strncmp(t, "ports=", 6) == 0) { | |
2321 | parse_wccp2_service_ports(t + 6, portlist); | |
2322 | flags |= WCCP2_SERVICE_PORTS_DEFINED; | |
2323 | } else if (strncmp(t, "protocol=tcp", 12) == 0) { | |
2324 | protocol = IPPROTO_TCP; | |
2325 | } else if (strncmp(t, "protocol=udp", 12) == 0) { | |
2326 | protocol = IPPROTO_UDP; | |
2327 | } else if (strncmp(t, "protocol=", 9) == 0) { | |
2328 | fatalf("parse_wccp2_service_info: id %d: unknown protocol (%s) - must be tcp or udp!\n", service_id, t); | |
2329 | } else if (strncmp(t, "priority=", 9) == 0) { | |
2330 | priority = strtol(t + 9, &end, 0); | |
2331 | ||
2332 | if (priority < 0 || priority > 255) { | |
2333 | fatalf("parse_wccp2_service_info: id %d: %s out of range (0..255)!\n", service_id, t); | |
2334 | } | |
2335 | } else { | |
2336 | fatalf("parse_wccp2_service_info: id %d: unknown option '%s'\n", service_id, t); | |
2337 | } | |
2338 | } | |
2339 | ||
2340 | /* Check everything is set */ | |
2341 | if (priority == -1) { | |
2342 | fatalf("parse_wccp2_service_info: service %d: no priority defined (valid: 0..255)!\n", service_id); | |
2343 | } | |
2344 | ||
2345 | if (protocol == -1) { | |
2346 | fatalf("parse_wccp2_service_info: service %d: no protocol defined (valid: tcp or udp)!\n", service_id); | |
2347 | } | |
2348 | ||
2349 | if (!(flags & WCCP2_SERVICE_PORTS_DEFINED)) { | |
2350 | fatalf("parse_wccp2_service_info: service %d: no ports defined!\n", service_id); | |
2351 | } | |
2352 | ||
2353 | /* rightio! now we can update */ | |
2354 | wccp2_update_service(srv, WCCP2_SERVICE_DYNAMIC, service_id, priority, | |
2355 | protocol, flags, portlist); | |
2356 | ||
2357 | /* Done! */ | |
2358 | } | |
2359 | ||
2360 | void | |
2361 | dump_wccp2_service_info(StoreEntry * e, const char *label, void *v) | |
2362 | { | |
2363 | char comma; | |
2364 | ||
2365 | struct wccp2_service_list_t *srv; | |
2366 | int flags; | |
2367 | srv = wccp2_service_list_head; | |
2368 | ||
2369 | while (srv != NULL) { | |
bf8fe701 | 2370 | debugs(80, 3, "dump_wccp2_service_info: id " << srv->info.service_id << " (type " << srv->info.service << ")"); |
0b0cfcf2 | 2371 | |
2372 | /* We don't need to spit out information for standard services */ | |
2373 | ||
2374 | if (srv->info.service == WCCP2_SERVICE_STANDARD) { | |
bf8fe701 | 2375 | debugs(80, 3, "dump_wccp2_service_info: id " << srv->info.service_id << ": standard service, not dumping info"); |
2376 | ||
0b0cfcf2 | 2377 | /* XXX eww */ |
2378 | srv = srv->next; | |
2379 | continue; | |
2380 | } | |
2381 | ||
2382 | storeAppendPrintf(e, "%s %d", label, srv->info.service_id); | |
2383 | ||
2384 | /* priority */ | |
2385 | storeAppendPrintf(e, " priority=%d", srv->info.service_priority); | |
2386 | ||
2387 | /* flags */ | |
2388 | flags = ntohl(srv->info.service_flags); | |
2389 | ||
2390 | if (flags != 0) { | |
2391 | comma = 0; | |
2392 | storeAppendPrintf(e, " flags="); | |
2393 | ||
2394 | if (flags & WCCP2_SERVICE_SRC_IP_HASH) { | |
2395 | storeAppendPrintf(e, "%ssrc_ip_hash", comma ? "," : ""); | |
2396 | comma = 1; | |
2397 | } | |
2398 | ||
2399 | if (flags & WCCP2_SERVICE_DST_IP_HASH) { | |
2400 | storeAppendPrintf(e, "%sdst_ip_hash", comma ? "," : ""); | |
2401 | comma = 1; | |
2402 | } | |
2403 | ||
b7d249f9 | 2404 | if (flags & WCCP2_SERVICE_SRC_PORT_HASH) { |
0b0cfcf2 | 2405 | storeAppendPrintf(e, "%ssource_port_hash", comma ? "," : ""); |
2406 | comma = 1; | |
2407 | } | |
2408 | ||
2409 | if (flags & WCCP2_SERVICE_DST_PORT_HASH) { | |
2410 | storeAppendPrintf(e, "%sdst_port_hash", comma ? "," : ""); | |
2411 | comma = 1; | |
2412 | } | |
2413 | ||
2414 | if (flags & WCCP2_SERVICE_PORTS_DEFINED) { | |
2415 | storeAppendPrintf(e, "%sports_defined", comma ? "," : ""); | |
2416 | comma = 1; | |
2417 | } | |
2418 | ||
2419 | if (flags & WCCP2_SERVICE_PORTS_SOURCE) { | |
2420 | storeAppendPrintf(e, "%sports_source", comma ? "," : ""); | |
2421 | comma = 1; | |
2422 | } | |
2423 | ||
2424 | if (flags & WCCP2_SERVICE_SRC_IP_ALT_HASH) { | |
2425 | storeAppendPrintf(e, "%ssrc_ip_alt_hash", comma ? "," : ""); | |
2426 | comma = 1; | |
2427 | } | |
2428 | ||
2429 | if (flags & WCCP2_SERVICE_DST_IP_ALT_HASH) { | |
2430 | storeAppendPrintf(e, "%ssrc_ip_alt_hash", comma ? "," : ""); | |
2431 | comma = 1; | |
2432 | } | |
2433 | ||
2434 | if (flags & WCCP2_SERVICE_SRC_PORT_ALT_HASH) { | |
2435 | storeAppendPrintf(e, "%ssrc_port_alt_hash", comma ? "," : ""); | |
2436 | comma = 1; | |
2437 | } | |
2438 | ||
2439 | if (flags & WCCP2_SERVICE_DST_PORT_ALT_HASH) { | |
2440 | storeAppendPrintf(e, "%sdst_port_alt_hash", comma ? "," : ""); | |
2441 | comma = 1; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | /* ports */ | |
2446 | comma = 0; | |
2447 | ||
2448 | if (srv->info.port0 != 0) { | |
2449 | storeAppendPrintf(e, "%s%d", comma ? "," : " ports=", ntohs(srv->info.port0)); | |
2450 | comma = 1; | |
2451 | } | |
2452 | ||
2453 | if (srv->info.port1 != 0) { | |
2454 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port1)); | |
2455 | comma = 1; | |
2456 | } | |
2457 | ||
2458 | if (srv->info.port2 != 0) { | |
2459 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port2)); | |
2460 | comma = 1; | |
2461 | } | |
2462 | ||
2463 | if (srv->info.port3 != 0) { | |
2464 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port3)); | |
2465 | comma = 1; | |
2466 | } | |
2467 | ||
2468 | if (srv->info.port4 != 0) { | |
2469 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port4)); | |
2470 | comma = 1; | |
2471 | } | |
2472 | ||
2473 | if (srv->info.port5 != 0) { | |
2474 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port5)); | |
2475 | comma = 1; | |
2476 | } | |
2477 | ||
2478 | if (srv->info.port6 != 0) { | |
2479 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port6)); | |
2480 | comma = 1; | |
2481 | } | |
2482 | ||
2483 | if (srv->info.port7 != 0) { | |
2484 | storeAppendPrintf(e, "%s%d", comma ? "," : "ports=", ntohs(srv->info.port7)); | |
2485 | comma = 1; | |
2486 | } | |
2487 | ||
2488 | /* protocol */ | |
2489 | storeAppendPrintf(e, " protocol=%s", (srv->info.service_protocol == IPPROTO_TCP) ? "tcp" : "udp"); | |
2490 | ||
2491 | storeAppendPrintf(e, "\n"); | |
2492 | ||
2493 | srv = srv->next; | |
2494 | } | |
2495 | } | |
2496 | ||
264096e2 | 2497 | /* Sort the cache list by doing a "selection sort" by IP address */ |
2498 | static void | |
2499 | wccp2SortCacheList(struct wccp2_cache_list_t *head) | |
2500 | { | |
2501 | struct wccp2_cache_list_t tmp; | |
2502 | struct wccp2_cache_list_t *this_item; | |
2503 | struct wccp2_cache_list_t *find_item; | |
2504 | struct wccp2_cache_list_t *next_lowest; | |
2505 | ||
2506 | /* Go through each position in the list one at a time */ | |
2507 | for (this_item = head; this_item->next; this_item = this_item->next) { | |
26ac0430 AJ |
2508 | /* Find the item with the lowest IP */ |
2509 | next_lowest = this_item; | |
2510 | ||
2511 | for (find_item = this_item; find_item->next; find_item = find_item->next) { | |
2512 | if (find_item->cache_ip.s_addr < next_lowest->cache_ip.s_addr) { | |
2513 | next_lowest = find_item; | |
2514 | } | |
2515 | } | |
2516 | /* Swap if we need to */ | |
2517 | if (next_lowest != this_item) { | |
2518 | /* First make a copy of the current item */ | |
2519 | memcpy(&tmp, this_item, sizeof(struct wccp2_cache_list_t)); | |
2520 | ||
2521 | /* Next update the pointers to maintain the linked list */ | |
2522 | tmp.next = next_lowest->next; | |
2523 | next_lowest->next = this_item->next; | |
2524 | ||
2525 | /* Finally copy the updated items to their correct location */ | |
2526 | memcpy(this_item, next_lowest, sizeof(struct wccp2_cache_list_t)); | |
2527 | memcpy(next_lowest, &tmp, sizeof(struct wccp2_cache_list_t)); | |
2528 | } | |
264096e2 | 2529 | } |
2530 | } | |
2531 | ||
0b0cfcf2 | 2532 | void |
2533 | free_wccp2_service_info(void *v) | |
2534 | {} | |
2535 | ||
2536 | #endif /* USE_WCCPv2 */ |