]>
Commit | Line | Data |
---|---|---|
212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * s_auth.c: Functions for querying a users ident. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
6fcb8629 | 24 | * $Id: s_auth.c 3354 2007-04-03 09:21:31Z nenolod $ */ |
212380e3 AC |
25 | |
26 | /* | |
27 | * Changes: | |
28 | * July 6, 1999 - Rewrote most of the code here. When a client connects | |
29 | * to the server and passes initial socket validation checks, it | |
30 | * is owned by this module (auth) which returns it to the rest of the | |
31 | * server when dns and auth queries are finished. Until the client is | |
32 | * released, the server does not know it exists and does not process | |
33 | * any messages from it. | |
34 | * --Bleep Thomas Helvey <tomh@inxpress.net> | |
35 | */ | |
36 | #include "stdinc.h" | |
37 | #include "config.h" | |
212380e3 AC |
38 | #include "s_auth.h" |
39 | #include "s_conf.h" | |
40 | #include "client.h" | |
41 | #include "common.h" | |
4562c604 | 42 | #include "match.h" |
212380e3 AC |
43 | #include "ircd.h" |
44 | #include "numeric.h" | |
45 | #include "packet.h" | |
46 | #include "res.h" | |
4016731b | 47 | #include "logger.h" |
212380e3 AC |
48 | #include "s_stats.h" |
49 | #include "send.h" | |
212380e3 AC |
50 | #include "hook.h" |
51 | #include "blacklist.h" | |
52 | ||
1a530728 JT |
53 | struct AuthRequest |
54 | { | |
55 | rb_dlink_node node; | |
56 | struct Client *client; /* pointer to client struct for request */ | |
57 | struct DNSQuery dns_query; /* DNS Query */ | |
58 | unsigned int flags; /* current state of request */ | |
59 | rb_fde_t *F; /* file descriptor for auth queries */ | |
60 | time_t timeout; /* time when query expires */ | |
d0ebe1bc JT |
61 | uint16_t lport; |
62 | uint16_t rport; | |
1a530728 JT |
63 | }; |
64 | ||
65 | /* | |
66 | * flag values for AuthRequest | |
67 | * NAMESPACE: AM_xxx - Authentication Module | |
68 | */ | |
69 | #define AM_AUTH_CONNECTING (1 << 0) | |
70 | #define AM_AUTH_PENDING (1 << 1) | |
71 | #define AM_DNS_PENDING (1 << 2) | |
72 | ||
73 | #define SetDNSPending(x) ((x)->flags |= AM_DNS_PENDING) | |
74 | #define ClearDNSPending(x) ((x)->flags &= ~AM_DNS_PENDING) | |
75 | #define IsDNSPending(x) ((x)->flags & AM_DNS_PENDING) | |
76 | ||
77 | #define SetAuthConnect(x) ((x)->flags |= AM_AUTH_CONNECTING) | |
78 | #define ClearAuthConnect(x) ((x)->flags &= ~AM_AUTH_CONNECTING) | |
79 | #define IsAuthConnect(x) ((x)->flags & AM_AUTH_CONNECTING) | |
80 | ||
81 | #define SetAuthPending(x) ((x)->flags |= AM_AUTH_PENDING) | |
82 | #define ClearAuthPending(x) ((x)->flags &= AM_AUTH_PENDING) | |
83 | #define IsAuthPending(x) ((x)->flags & AM_AUTH_PENDING) | |
84 | ||
85 | #define ClearAuth(x) ((x)->flags &= ~(AM_AUTH_PENDING | AM_AUTH_CONNECTING)) | |
86 | #define IsDoingAuth(x) ((x)->flags & (AM_AUTH_PENDING | AM_AUTH_CONNECTING)) | |
87 | ||
212380e3 AC |
88 | /* |
89 | * a bit different approach | |
90 | * this replaces the original sendheader macros | |
91 | */ | |
92 | ||
93 | static const char *HeaderMessages[] = | |
94 | { | |
5366977b AC |
95 | ":*** Looking up your hostname...", |
96 | ":*** Found your hostname", | |
97 | ":*** Couldn't look up your hostname", | |
98 | ":*** Checking Ident", | |
99 | ":*** Got Ident response", | |
100 | ":*** No Ident response", | |
101 | ":*** Your hostname is too long, ignoring hostname", | |
102 | ":*** Your forward and reverse DNS do not match, ignoring hostname", | |
103 | ":*** Cannot verify hostname validity, ignoring hostname", | |
212380e3 AC |
104 | }; |
105 | ||
106 | typedef enum | |
107 | { | |
108 | REPORT_DO_DNS, | |
109 | REPORT_FIN_DNS, | |
110 | REPORT_FAIL_DNS, | |
111 | REPORT_DO_ID, | |
112 | REPORT_FIN_ID, | |
113 | REPORT_FAIL_ID, | |
114 | REPORT_HOST_TOOLONG, | |
115 | REPORT_HOST_MISMATCH, | |
116 | REPORT_HOST_UNKNOWN | |
117 | } | |
118 | ReportType; | |
119 | ||
5366977b | 120 | #define sendheader(c, r) sendto_one_notice(c, HeaderMessages[(r)]) |
212380e3 | 121 | |
330fc5c1 | 122 | static rb_dlink_list auth_poll_list; |
398b6a73 | 123 | static rb_bh *auth_heap; |
212380e3 AC |
124 | static EVH timeout_auth_queries_event; |
125 | ||
126 | static PF read_auth_reply; | |
127 | static CNCB auth_connect_callback; | |
128 | ||
129 | /* | |
130 | * init_auth() | |
131 | * | |
132 | * Initialise the auth code | |
133 | */ | |
134 | void | |
135 | init_auth(void) | |
136 | { | |
137 | /* This hook takes a struct Client for its argument */ | |
138 | memset(&auth_poll_list, 0, sizeof(auth_poll_list)); | |
12aea5fe | 139 | rb_event_addish("timeout_auth_queries_event", timeout_auth_queries_event, NULL, 1); |
c6f49c9a | 140 | auth_heap = rb_bh_create(sizeof(struct AuthRequest), LCLIENT_HEAP_SIZE, "auth_heap"); |
212380e3 AC |
141 | } |
142 | ||
143 | /* | |
144 | * make_auth_request - allocate a new auth request | |
145 | */ | |
146 | static struct AuthRequest * | |
147 | make_auth_request(struct Client *client) | |
148 | { | |
398b6a73 | 149 | struct AuthRequest *request = rb_bh_alloc(auth_heap); |
212380e3 | 150 | client->localClient->auth_request = request; |
c6f49c9a | 151 | request->F = NULL; |
212380e3 | 152 | request->client = client; |
e3354945 | 153 | request->timeout = rb_current_time() + ConfigFileEntry.connect_timeout; |
212380e3 AC |
154 | return request; |
155 | } | |
156 | ||
157 | /* | |
158 | * free_auth_request - cleanup auth request allocations | |
159 | */ | |
160 | static void | |
161 | free_auth_request(struct AuthRequest *request) | |
162 | { | |
398b6a73 | 163 | rb_bh_free(auth_heap, request); |
212380e3 AC |
164 | } |
165 | ||
166 | /* | |
167 | * release_auth_client - release auth client from auth system | |
168 | * this adds the client into the local client lists so it can be read by | |
169 | * the main io processing loop | |
170 | */ | |
171 | static void | |
172 | release_auth_client(struct AuthRequest *auth) | |
173 | { | |
174 | struct Client *client = auth->client; | |
175 | ||
176 | if(IsDNSPending(auth) || IsDoingAuth(auth)) | |
177 | return; | |
178 | ||
179 | client->localClient->auth_request = NULL; | |
330fc5c1 | 180 | rb_dlinkDelete(&auth->node, &auth_poll_list); |
212380e3 | 181 | free_auth_request(auth); |
212380e3 AC |
182 | |
183 | /* | |
184 | * When a client has auth'ed, we want to start reading what it sends | |
185 | * us. This is what read_packet() does. | |
186 | * -- adrian | |
187 | */ | |
188 | client->localClient->allow_read = MAX_FLOOD; | |
330fc5c1 | 189 | rb_dlinkAddTail(client, &client->node, &global_client_list); |
c6f49c9a | 190 | read_packet(client->localClient->F, client); |
212380e3 AC |
191 | } |
192 | ||
193 | /* | |
194 | * auth_dns_callback - called when resolver query finishes | |
195 | * if the query resulted in a successful search, hp will contain | |
196 | * a non-null pointer, otherwise hp will be null. | |
197 | * set the client on it's way to a connection completion, regardless | |
198 | * of success of failure | |
199 | */ | |
200 | static void | |
201 | auth_dns_callback(void *vptr, struct DNSReply *reply) | |
202 | { | |
203 | struct AuthRequest *auth = (struct AuthRequest *) vptr; | |
204 | ClearDNSPending(auth); | |
205 | ||
206 | /* XXX: this shouldn't happen, but it does. -nenolod */ | |
207 | if(auth->client->localClient == NULL) | |
208 | { | |
209 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
210 | "auth_dns_callback(): auth->client->localClient (%s) is NULL", get_client_name(auth->client, HIDE_IP)); | |
211 | ||
330fc5c1 | 212 | rb_dlinkDelete(&auth->node, &auth_poll_list); |
212380e3 AC |
213 | free_auth_request(auth); |
214 | ||
215 | /* and they will silently drop through and all will hopefully be ok... -nenolod */ | |
216 | return; | |
217 | } | |
218 | ||
219 | if(reply) | |
220 | { | |
221 | int good = 1; | |
222 | ||
223 | if(auth->client->localClient->ip.ss_family == AF_INET) | |
224 | { | |
225 | struct sockaddr_in *ip, *ip_fwd; | |
226 | ||
227 | ip = (struct sockaddr_in *) &auth->client->localClient->ip; | |
228 | ip_fwd = (struct sockaddr_in *) &reply->addr; | |
229 | ||
230 | if(ip->sin_addr.s_addr != ip_fwd->sin_addr.s_addr) | |
231 | { | |
232 | sendheader(auth->client, REPORT_HOST_MISMATCH); | |
233 | good = 0; | |
234 | } | |
235 | } | |
ccda6e3f | 236 | #ifdef RB_IPV6 |
212380e3 AC |
237 | else if(auth->client->localClient->ip.ss_family == AF_INET6) |
238 | { | |
239 | struct sockaddr_in6 *ip, *ip_fwd; | |
240 | ||
241 | ip = (struct sockaddr_in6 *) &auth->client->localClient->ip; | |
242 | ip_fwd = (struct sockaddr_in6 *) &reply->addr; | |
243 | ||
244 | if(memcmp(&ip->sin6_addr, &ip_fwd->sin6_addr, sizeof(struct in6_addr)) != 0) | |
245 | { | |
246 | sendheader(auth->client, REPORT_HOST_MISMATCH); | |
247 | good = 0; | |
248 | } | |
249 | } | |
250 | #endif | |
251 | else /* can't verify it, don't know how. reject it. */ | |
252 | { | |
253 | sendheader(auth->client, REPORT_HOST_UNKNOWN); | |
254 | good = 0; | |
255 | } | |
256 | ||
257 | if(good && strlen(reply->h_name) <= HOSTLEN) | |
258 | { | |
f427c8b0 | 259 | rb_strlcpy(auth->client->host, reply->h_name, sizeof(auth->client->host)); |
212380e3 AC |
260 | sendheader(auth->client, REPORT_FIN_DNS); |
261 | } | |
262 | else if (strlen(reply->h_name) > HOSTLEN) | |
263 | sendheader(auth->client, REPORT_HOST_TOOLONG); | |
264 | } | |
265 | else | |
266 | sendheader(auth->client, REPORT_FAIL_DNS); | |
267 | ||
268 | release_auth_client(auth); | |
269 | } | |
270 | ||
271 | /* | |
272 | * authsenderr - handle auth send errors | |
273 | */ | |
274 | static void | |
275 | auth_error(struct AuthRequest *auth) | |
276 | { | |
47adde3d | 277 | ++ServerStats.is_abad; |
212380e3 | 278 | |
c6f49c9a JT |
279 | rb_close(auth->F); |
280 | auth->F = NULL; | |
212380e3 AC |
281 | |
282 | ClearAuth(auth); | |
283 | sendheader(auth->client, REPORT_FAIL_ID); | |
284 | ||
285 | release_auth_client(auth); | |
286 | } | |
287 | ||
288 | /* | |
289 | * start_auth_query - Flag the client to show that an attempt to | |
290 | * contact the ident server on | |
291 | * the client's host. The connect and subsequently the socket are all put | |
292 | * into 'non-blocking' mode. Should the connect or any later phase of the | |
293 | * identifing process fail, it is aborted and the user is given a username | |
294 | * of "unknown". | |
295 | */ | |
296 | static int | |
297 | start_auth_query(struct AuthRequest *auth) | |
298 | { | |
c6f49c9a | 299 | struct rb_sockaddr_storage localaddr, destaddr; |
c6f49c9a | 300 | rb_fde_t *F; |
212380e3 AC |
301 | int family; |
302 | ||
303 | if(IsAnyDead(auth->client)) | |
304 | return 0; | |
305 | ||
306 | family = auth->client->localClient->ip.ss_family; | |
c6f49c9a | 307 | if((F = rb_socket(family, SOCK_STREAM, 0, "ident")) == NULL) |
212380e3 | 308 | { |
825ddf13 | 309 | ilog_error("creating auth stream socket"); |
47adde3d | 310 | ++ServerStats.is_abad; |
212380e3 AC |
311 | return 0; |
312 | } | |
6fcb8629 AC |
313 | |
314 | /* | |
315 | * TBD: this is a pointless arbitrary limit .. we either have a socket or not. -nenolod | |
316 | */ | |
c6f49c9a | 317 | if((maxconnections - 10) < rb_get_fd(F)) |
212380e3 AC |
318 | { |
319 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
320 | "Can't allocate fd for auth on %s", | |
321 | get_client_name(auth->client, SHOW_IP)); | |
c6f49c9a | 322 | rb_close(F); |
212380e3 AC |
323 | return 0; |
324 | } | |
325 | ||
326 | sendheader(auth->client, REPORT_DO_ID); | |
327 | ||
328 | /* | |
329 | * get the local address of the client and bind to that to | |
330 | * make the auth request. This used to be done only for | |
331 | * ifdef VIRTUAL_HOST, but needs to be done for all clients | |
332 | * since the ident request must originate from that same address-- | |
333 | * and machines with multiple IP addresses are common now | |
334 | */ | |
3540120a | 335 | localaddr = auth->client->preClient->lip; |
212380e3 | 336 | |
c6f49c9a | 337 | /* XXX mangle_mapped_sockaddr((struct sockaddr *)&localaddr); */ |
ccda6e3f | 338 | #ifdef RB_IPV6 |
212380e3 AC |
339 | if(localaddr.ss_family == AF_INET6) |
340 | { | |
d0ebe1bc | 341 | auth->lport = ntohs(((struct sockaddr_in6 *)&localaddr)->sin6_port); |
212380e3 | 342 | ((struct sockaddr_in6 *)&localaddr)->sin6_port = 0; |
d0ebe1bc JT |
343 | } |
344 | else | |
212380e3 | 345 | #endif |
d0ebe1bc JT |
346 | { |
347 | auth->lport = ntohs(((struct sockaddr_in *)&localaddr)->sin_port); | |
348 | ((struct sockaddr_in *)&localaddr)->sin_port = 0; | |
349 | } | |
c6f49c9a JT |
350 | |
351 | destaddr = auth->client->localClient->ip; | |
ccda6e3f | 352 | #ifdef RB_IPV6 |
c6f49c9a JT |
353 | if(localaddr.ss_family == AF_INET6) |
354 | { | |
d0ebe1bc | 355 | auth->rport = ntohs(((struct sockaddr_in6 *)&destaddr)->sin6_port); |
e33c4818 | 356 | ((struct sockaddr_in6 *)&destaddr)->sin6_port = htons(113); |
d0ebe1bc JT |
357 | } |
358 | else | |
c6f49c9a | 359 | #endif |
d0ebe1bc JT |
360 | { |
361 | auth->rport = ntohs(((struct sockaddr_in *)&destaddr)->sin_port); | |
362 | ((struct sockaddr_in *)&destaddr)->sin_port = htons(113); | |
363 | } | |
212380e3 | 364 | |
c6f49c9a | 365 | auth->F = F; |
212380e3 AC |
366 | SetAuthConnect(auth); |
367 | ||
c6f49c9a JT |
368 | rb_connect_tcp(F, (struct sockaddr *)&destaddr, |
369 | (struct sockaddr *) &localaddr, GET_SS_LEN(&localaddr), | |
212380e3 | 370 | auth_connect_callback, auth, |
c6f49c9a | 371 | GlobalSetOptions.ident_timeout); |
212380e3 AC |
372 | return 1; /* We suceed here for now */ |
373 | } | |
374 | ||
375 | /* | |
376 | * GetValidIdent - parse ident query reply from identd server | |
377 | * | |
378 | * Inputs - pointer to ident buf | |
379 | * Output - NULL if no valid ident found, otherwise pointer to name | |
380 | * Side effects - | |
381 | */ | |
382 | static char * | |
383 | GetValidIdent(char *buf) | |
384 | { | |
385 | int remp = 0; | |
386 | int locp = 0; | |
387 | char *colon1Ptr; | |
388 | char *colon2Ptr; | |
389 | char *colon3Ptr; | |
390 | char *commaPtr; | |
391 | char *remotePortString; | |
392 | ||
393 | /* All this to get rid of a sscanf() fun. */ | |
394 | remotePortString = buf; | |
395 | ||
396 | colon1Ptr = strchr(remotePortString, ':'); | |
397 | if(!colon1Ptr) | |
398 | return 0; | |
399 | ||
400 | *colon1Ptr = '\0'; | |
401 | colon1Ptr++; | |
402 | colon2Ptr = strchr(colon1Ptr, ':'); | |
403 | if(!colon2Ptr) | |
404 | return 0; | |
405 | ||
406 | *colon2Ptr = '\0'; | |
407 | colon2Ptr++; | |
408 | commaPtr = strchr(remotePortString, ','); | |
409 | ||
410 | if(!commaPtr) | |
411 | return 0; | |
412 | ||
413 | *commaPtr = '\0'; | |
414 | commaPtr++; | |
415 | ||
416 | remp = atoi(remotePortString); | |
417 | if(!remp) | |
418 | return 0; | |
419 | ||
420 | locp = atoi(commaPtr); | |
421 | if(!locp) | |
422 | return 0; | |
423 | ||
424 | /* look for USERID bordered by first pair of colons */ | |
425 | if(!strstr(colon1Ptr, "USERID")) | |
426 | return 0; | |
427 | ||
428 | colon3Ptr = strchr(colon2Ptr, ':'); | |
429 | if(!colon3Ptr) | |
430 | return 0; | |
431 | ||
432 | *colon3Ptr = '\0'; | |
433 | colon3Ptr++; | |
434 | return (colon3Ptr); | |
435 | } | |
436 | ||
437 | /* | |
438 | * start_auth - starts auth (identd) and dns queries for a client | |
439 | */ | |
440 | void | |
441 | start_auth(struct Client *client) | |
442 | { | |
443 | struct AuthRequest *auth = 0; | |
444 | s_assert(0 != client); | |
445 | if(client == NULL) | |
446 | return; | |
447 | ||
212380e3 AC |
448 | auth = make_auth_request(client); |
449 | ||
450 | auth->dns_query.ptr = auth; | |
451 | auth->dns_query.callback = auth_dns_callback; | |
452 | ||
453 | sendheader(client, REPORT_DO_DNS); | |
454 | ||
455 | /* No DNS cache now, remember? -- adrian */ | |
456 | gethost_byaddr(&client->localClient->ip, &auth->dns_query); | |
457 | ||
458 | SetDNSPending(auth); | |
459 | ||
460 | if(ConfigFileEntry.disable_auth == 0) | |
461 | start_auth_query(auth); | |
462 | ||
330fc5c1 | 463 | rb_dlinkAdd(auth, &auth->node, &auth_poll_list); |
212380e3 AC |
464 | } |
465 | ||
466 | /* | |
467 | * timeout_auth_queries - timeout resolver and identd requests | |
468 | * allow clients through if requests failed | |
469 | */ | |
470 | static void | |
471 | timeout_auth_queries_event(void *notused) | |
472 | { | |
330fc5c1 | 473 | rb_dlink_node *ptr; |
637c4932 | 474 | rb_dlink_node *next_ptr; |
212380e3 AC |
475 | struct AuthRequest *auth; |
476 | ||
637c4932 | 477 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, auth_poll_list.head) |
212380e3 AC |
478 | { |
479 | auth = ptr->data; | |
480 | ||
e3354945 | 481 | if(auth->timeout < rb_current_time()) |
212380e3 | 482 | { |
c6f49c9a JT |
483 | if(auth->F != NULL) |
484 | rb_close(auth->F); | |
212380e3 AC |
485 | |
486 | if(IsDoingAuth(auth)) | |
487 | { | |
488 | ClearAuth(auth); | |
47adde3d | 489 | ++ServerStats.is_abad; |
212380e3 AC |
490 | sendheader(auth->client, REPORT_FAIL_ID); |
491 | auth->client->localClient->auth_request = NULL; | |
492 | } | |
493 | if(IsDNSPending(auth)) | |
494 | { | |
495 | ClearDNSPending(auth); | |
496 | delete_resolver_queries(&auth->dns_query); | |
497 | sendheader(auth->client, REPORT_FAIL_DNS); | |
498 | } | |
499 | ||
e3354945 | 500 | auth->client->localClient->lasttime = rb_current_time(); |
212380e3 AC |
501 | release_auth_client(auth); |
502 | } | |
503 | } | |
504 | } | |
505 | ||
506 | /* | |
b2f0da88 | 507 | * auth_connect_callback() - deal with the result of rb_connect_tcp() |
212380e3 AC |
508 | * |
509 | * If the connection failed, we simply close the auth fd and report | |
510 | * a failure. If the connection suceeded send the ident server a query | |
511 | * giving "theirport , ourport". The write is only attempted *once* so | |
512 | * it is deemed to be a fail if the entire write doesn't write all the | |
513 | * data given. This shouldnt be a problem since the socket should have | |
514 | * a write buffer far greater than this message to store it in should | |
515 | * problems arise. -avalon | |
516 | */ | |
517 | static void | |
c6f49c9a | 518 | auth_connect_callback(rb_fde_t *F, int error, void *data) |
212380e3 AC |
519 | { |
520 | struct AuthRequest *auth = data; | |
212380e3 | 521 | char authbuf[32]; |
212380e3 AC |
522 | |
523 | /* Check the error */ | |
c6f49c9a | 524 | if(error != RB_OK) |
212380e3 AC |
525 | { |
526 | /* We had an error during connection :( */ | |
527 | auth_error(auth); | |
528 | return; | |
529 | } | |
530 | ||
b2f0da88 | 531 | rb_snprintf(authbuf, sizeof(authbuf), "%u , %u\r\n", |
d0ebe1bc | 532 | auth->rport, auth->lport); |
212380e3 | 533 | |
dd1b211f | 534 | if(rb_write(auth->F, authbuf, strlen(authbuf)) != strlen(authbuf)) |
212380e3 AC |
535 | { |
536 | auth_error(auth); | |
537 | return; | |
538 | } | |
539 | ClearAuthConnect(auth); | |
540 | SetAuthPending(auth); | |
c6f49c9a | 541 | read_auth_reply(auth->F, auth); |
212380e3 AC |
542 | } |
543 | ||
544 | ||
545 | /* | |
546 | * read_auth_reply - read the reply (if any) from the ident server | |
547 | * we connected to. | |
548 | * We only give it one shot, if the reply isn't good the first time | |
549 | * fail the authentication entirely. --Bleep | |
550 | */ | |
551 | #define AUTH_BUFSIZ 128 | |
552 | ||
553 | static void | |
c6f49c9a | 554 | read_auth_reply(rb_fde_t *F, void *data) |
212380e3 AC |
555 | { |
556 | struct AuthRequest *auth = data; | |
557 | char *s = NULL; | |
558 | char *t = NULL; | |
559 | int len; | |
560 | int count; | |
561 | char buf[AUTH_BUFSIZ + 1]; /* buffer to read auth reply into */ | |
562 | ||
dd1b211f | 563 | len = rb_read(F, buf, AUTH_BUFSIZ); |
212380e3 | 564 | |
c6f49c9a | 565 | if(len < 0 && rb_ignore_errno(errno)) |
212380e3 | 566 | { |
c6f49c9a | 567 | rb_setselect(F, RB_SELECT_READ, read_auth_reply, auth); |
212380e3 AC |
568 | return; |
569 | } | |
570 | ||
571 | if(len > 0) | |
572 | { | |
573 | buf[len] = '\0'; | |
574 | ||
575 | if((s = GetValidIdent(buf))) | |
576 | { | |
577 | t = auth->client->username; | |
578 | ||
579 | while (*s == '~' || *s == '^') | |
580 | s++; | |
581 | ||
582 | for (count = USERLEN; *s && count; s++) | |
583 | { | |
584 | if(*s == '@') | |
585 | { | |
586 | break; | |
587 | } | |
588 | if(!IsSpace(*s) && *s != ':' && *s != '[') | |
589 | { | |
590 | *t++ = *s; | |
591 | count--; | |
592 | } | |
593 | } | |
594 | *t = '\0'; | |
595 | } | |
596 | } | |
597 | ||
c6f49c9a JT |
598 | rb_close(auth->F); |
599 | auth->F = NULL; | |
212380e3 AC |
600 | ClearAuth(auth); |
601 | ||
602 | if(s == NULL) | |
603 | { | |
47adde3d | 604 | ++ServerStats.is_abad; |
212380e3 AC |
605 | strcpy(auth->client->username, "unknown"); |
606 | sendheader(auth->client, REPORT_FAIL_ID); | |
607 | } | |
608 | else | |
609 | { | |
610 | sendheader(auth->client, REPORT_FIN_ID); | |
47adde3d | 611 | ++ServerStats.is_asuc; |
212380e3 AC |
612 | SetGotId(auth->client); |
613 | } | |
614 | ||
615 | release_auth_client(auth); | |
616 | } | |
617 | ||
618 | ||
619 | ||
620 | /* | |
621 | * delete_auth_queries() | |
622 | * | |
623 | */ | |
624 | void | |
625 | delete_auth_queries(struct Client *target_p) | |
626 | { | |
627 | struct AuthRequest *auth; | |
628 | ||
629 | if(target_p == NULL || target_p->localClient == NULL || | |
630 | target_p->localClient->auth_request == NULL) | |
631 | return; | |
632 | ||
633 | auth = target_p->localClient->auth_request; | |
634 | target_p->localClient->auth_request = NULL; | |
635 | ||
636 | if(IsDNSPending(auth)) | |
637 | delete_resolver_queries(&auth->dns_query); | |
638 | ||
c6f49c9a JT |
639 | if(auth->F != NULL) |
640 | rb_close(auth->F); | |
212380e3 | 641 | |
330fc5c1 | 642 | rb_dlinkDelete(&auth->node, &auth_poll_list); |
212380e3 AC |
643 | free_auth_request(auth); |
644 | } |