Commit | Line | Data |
---|---|---|
87822447 | 1 | #define _LARGEFILE64_SOURCE |
ff47641b | 2 | #define _GNU_SOURCE |
87822447 | 3 | |
bed98ff9 | 4 | #include "httpd.h" |
5 | #include "http_config.h" | |
bed98ff9 | 6 | #include "http_log.h" |
7193eb01 | 7 | #include "http_protocol.h" |
8 | #include "http_request.h" | |
9 | #include "http_core.h" | |
87822447 | 10 | |
ff47641b | 11 | #ifdef sun |
12 | #include <synch.h> | |
2779b42e | 13 | #include <stropts.h> |
ff47641b | 14 | #elif linux |
15 | #define use_pthreads | |
16 | #include <features.h> | |
17 | #include <sys/types.h> | |
18 | #include <sys/mman.h> | |
19 | #include <pthread.h> | |
20 | #else | |
21 | #error "make sure you include the right stuff here" | |
22 | #endif | |
23 | ||
24 | #ifndef MAXNAMELEN | |
25 | #define MAXNAMELEN 1024 | |
26 | #endif | |
27 | ||
891fb458 | 28 | #ifdef STANDARD20_MODULE_STUFF |
c9d59a9c | 29 | #define APACHE2 |
30 | #endif | |
31 | ||
32 | /********************* APACHE1 ******************************************************************************/ | |
33 | #ifndef APACHE2 | |
ebb1f61c | 34 | #include "ap_config.h" |
35 | #if defined(sun) | |
36 | #include <sys/ioccom.h> | |
37 | #endif /* sun */ | |
38 | #include <http_conf_globals.h> | |
39 | #define MK_POOL pool | |
40 | #define MK_TABLE_GET ap_table_get | |
41 | #define MK_TABLE_SET ap_table_set | |
42 | #define command(name, func, var, type, usage) \ | |
43 | { name, func, \ | |
44 | NULL , \ | |
45 | RSRC_CONF | ACCESS_CONF , type, usage } | |
21a7788b | 46 | module waklog_module; |
ebb1f61c | 47 | |
48 | /********************* APACHE2 ******************************************************************************/ | |
49 | #else | |
87822447 | 50 | #include <apr_strings.h> |
51 | #include <apr_base64.h> | |
ebb1f61c | 52 | #define ap_pcalloc apr_pcalloc |
53 | #define ap_pdupstr apr_pdupstr | |
54 | #define ap_pstrdup apr_pstrdup | |
87822447 | 55 | #define MK_POOL apr_pool_t |
56 | #define MK_TABLE_GET apr_table_get | |
d06251b1 | 57 | #define MK_TABLE_SET apr_table_set |
87822447 | 58 | #include "unixd.h" |
59 | extern unixd_config_rec unixd_config; | |
60 | #define ap_user_id unixd_config.user_id | |
61 | #define ap_group_id unixd_config.group_id | |
62 | #define ap_user_name unixd_config.user_name | |
63 | #define command(name, func, var, type, usage) \ | |
64 | AP_INIT_ ## type (name, (void*) func, \ | |
ebb1f61c | 65 | NULL, \ |
66 | RSRC_CONF | ACCESS_CONF, usage) | |
21a7788b | 67 | module AP_MODULE_DECLARE_DATA waklog_module; |
68 | typedef struct { int dummy; } child_info; | |
87822447 | 69 | const char *userdata_key = "waklog_init"; |
21a7788b | 70 | |
c9d59a9c | 71 | #endif /* APACHE2 */ |
ebb1f61c | 72 | /**************************************************************************************************/ |
877d453f | 73 | |
74 | #include <krb5.h> | |
3cb7bdb7 RJH |
75 | |
76 | #include <afs/param.h> | |
77 | ||
877d453f | 78 | #include <afs/venus.h> |
79 | #include <afs/auth.h> | |
80 | #include <afs/dirpath.h> | |
81 | #include <afs/ptuser.h> | |
82 | #include <rx/rxkad.h> | |
83 | ||
84 | #define TKT_LIFE ( 12 * 60 * 60 ) | |
42d78dfb | 85 | #define SLEEP_TIME ( TKT_LIFE - 5*60 ) |
877d453f | 86 | |
5d0827ae | 87 | #define WAKLOG_UNSET -1 |
877d453f | 88 | |
89 | #ifdef WAKLOG_DEBUG | |
90 | #undef APLOG_DEBUG | |
91 | #define APLOG_DEBUG APLOG_ERR | |
92 | #endif | |
93 | ||
877d453f | 94 | /* this is used to turn off pag generation for the backround worker child during startup */ |
95 | int pag_for_children = 1; | |
96 | ||
97 | typedef struct | |
98 | { | |
99 | int forked; | |
100 | int configured; | |
101 | int protect; | |
102 | int usertokens; | |
c8563f50 | 103 | int cell_in_principal; |
21a7788b | 104 | int disable_token_cache; |
877d453f | 105 | char *keytab; |
106 | char *principal; | |
107 | char *default_principal; | |
108 | char *default_keytab; | |
109 | char *afs_cell; | |
98534230 | 110 | char *afs_cell_realm; |
877d453f | 111 | char *path; |
112 | MK_POOL *p; | |
113 | } | |
114 | waklog_config; | |
115 | ||
116 | typedef struct | |
117 | { | |
118 | struct ktc_token token; | |
119 | char clientprincipal[MAXNAMELEN]; | |
120 | krb5_context kcontext; | |
121 | krb5_ccache ccache; | |
122 | struct ktc_principal server; | |
123 | struct ktc_principal client; | |
124 | int pr_init; | |
125 | } waklog_child_config; | |
126 | ||
127 | waklog_child_config child; | |
128 | ||
129 | struct tokencache_ent { | |
130 | char clientprincipal[MAXNAMELEN]; | |
131 | struct ktc_token token; | |
132 | struct ktc_principal client; | |
133 | struct ktc_principal server; | |
134 | time_t lastused; | |
135 | int persist; | |
136 | }; | |
137 | ||
138 | #define SHARED_TABLE_SIZE 512 | |
139 | ||
140 | struct sharedspace_s { | |
141 | int renewcount; | |
142 | struct tokencache_ent sharedtokens[SHARED_TABLE_SIZE]; | |
143 | }; | |
144 | ||
145 | struct sharedspace_s *sharedspace = NULL; | |
146 | ||
147 | struct renew_ent { | |
148 | char *keytab; | |
149 | char *principal; | |
150 | int lastrenewed; | |
151 | }; | |
152 | ||
153 | #ifdef use_pthreads | |
154 | pthread_rwlock_t *sharedlock = NULL; | |
155 | #else | |
156 | rwlock_t *sharedlock = NULL; | |
157 | #endif | |
158 | ||
159 | struct renew_ent renewtable[SHARED_TABLE_SIZE]; | |
160 | ||
161 | int renewcount = 0; | |
162 | ||
ebb1f61c | 163 | |
87822447 | 164 | |
c69d952f | 165 | #define getModConfig(P, X) P = (waklog_config *) ap_get_module_config( (X)->module_config, &waklog_module ); |
87822447 | 166 | |
4e1ae1cd | 167 | #include <krb5.h> |
bed98ff9 | 168 | |
7193eb01 | 169 | #if defined(sun) |
bed98ff9 | 170 | #include <sys/ioccom.h> |
7193eb01 | 171 | #endif /* sun */ |
bed98ff9 | 172 | #include <afs/venus.h> |
7193eb01 | 173 | #include <afs/auth.h> |
d06251b1 | 174 | #include <afs/dirpath.h> |
175 | #include <afs/ptuser.h> | |
7193eb01 | 176 | #include <rx/rxkad.h> |
177 | ||
58bbdc54 | 178 | |
87822447 | 179 | static void |
3f4fda20 | 180 | log_error (const char *file, int line, int level, int status, |
42d78dfb | 181 | const server_rec * s, const char *fmt, ...) |
4d47a8d9 | 182 | { |
3f4fda20 | 183 | char errstr[4096]; |
184 | va_list ap; | |
4d47a8d9 | 185 | |
3f4fda20 | 186 | va_start (ap, fmt); |
187 | vsnprintf (errstr, 1024, fmt, ap); | |
188 | va_end (ap); | |
4d47a8d9 | 189 | |
c9d59a9c | 190 | #ifdef APACHE2 |
3f4fda20 | 191 | ap_log_error (file, line, level | APLOG_NOERRNO, status, s, "(%d) %s", getpid(), errstr); |
87822447 | 192 | #else |
3f4fda20 | 193 | ap_log_error (file, line, level | APLOG_NOERRNO, s, "(%d) %s", getpid(), errstr); |
87822447 | 194 | #endif |
4d47a8d9 | 195 | |
87822447 | 196 | } |
4d47a8d9 | 197 | |
3f4fda20 | 198 | waklog_config *retrieve_config(request_rec *r) { |
199 | ||
200 | request_rec *my; | |
201 | waklog_config *cfg; | |
202 | ||
203 | if ( r && r->main ) { | |
204 | my = r->main; | |
205 | } else if (r) { | |
206 | my = r; | |
207 | } else { | |
208 | return NULL; | |
209 | } | |
210 | ||
211 | if ( my && ( cfg = (waklog_config *) ap_get_module_config(my->per_dir_config, &waklog_module ) ) ) { | |
212 | return cfg; | |
213 | } else { | |
214 | getModConfig (cfg, r->server); | |
215 | } | |
216 | ||
217 | return cfg; | |
218 | ||
219 | } | |
313dde40 | 220 | |
3f4fda20 | 221 | /* set_auth -- sets the tokens of the current process to this user. |
222 | if "self" is set, it divines the user from the current requests' environment. | |
223 | otherwise, it's gettng it from principal/keytab */ | |
224 | ||
225 | int | |
226 | set_auth ( server_rec *s, request_rec *r, int self, char *principal, char *keytab, int storeonly ) { | |
227 | ||
228 | int i; | |
229 | int usecached = 0; | |
230 | krb5_error_code kerror = 0; | |
231 | krb5_principal kprinc = NULL; | |
232 | krb5_get_init_creds_opt kopts; | |
233 | krb5_creds v5creds; | |
234 | krb5_creds increds; | |
c760f0a1 | 235 | krb5_ccache clientccache; |
3f4fda20 | 236 | struct ktc_principal server = { "afs", "", "" }; |
237 | struct ktc_principal client; | |
238 | struct ktc_token token; | |
239 | krb5_creds *v5credsp = NULL; | |
240 | krb5_keytab krb5kt = NULL; | |
241 | char buf[MAXNAMELEN]; | |
242 | waklog_config *cfg; | |
243 | int rc = 0; | |
244 | int buflen = 0; | |
245 | time_t oldest_time = 0; | |
c760f0a1 | 246 | int oldest = 0; |
3f4fda20 | 247 | int stored = -1; |
248 | time_t mytime; | |
249 | int indentical; | |
c8563f50 | 250 | int cell_in_principal; |
251 | int attempt; | |
7c53b5d0 | 252 | int use_client_credentials = 0; |
3f4fda20 | 253 | |
c760f0a1 | 254 | char k5user[MAXNAMELEN] = ""; |
255 | char *k5secret = NULL; | |
256 | ||
7c53b5d0 | 257 | char *k5path = NULL; |
3f4fda20 | 258 | |
259 | memset((char *) &increds, 0, sizeof(increds)); | |
3f4fda20 | 260 | /* init some stuff if it ain't already */ |
c760f0a1 | 261 | /* XXX - In what situation will these not be initialized? */ |
262 | ||
3f4fda20 | 263 | if ( ! child.kcontext ) { |
c760f0a1 | 264 | if ((kerror = krb5_init_context(&child.kcontext))) { |
265 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't initialize Kerberos context err=%d", | |
266 | kerror); | |
267 | return(-1); | |
268 | } | |
7c53b5d0 | 269 | } |
c760f0a1 | 270 | |
271 | if ( !child.ccache) { | |
272 | if ((kerror = krb5_cc_resolve(child.kcontext, "MEMORY:tmpcache", &child.ccache))) { | |
273 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't initialize credentials cache %s err=%d", | |
274 | k5path, kerror ); | |
275 | return(-1); | |
276 | } | |
3f4fda20 | 277 | } |
278 | ||
d3bea354 | 279 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: set_auth: %d, %s, %s, %d, KRB5CC=%s user=%s", |
7c53b5d0 | 280 | self, principal ? principal : "NULL", |
d3bea354 | 281 | keytab ? keytab : "NULL", |
282 | storeonly, | |
283 | k5path ? k5path : "NULL", | |
284 | #ifdef APACHE2 | |
285 | (r && r->user) ? r->user : "NULL" | |
286 | #else | |
c760f0a1 | 287 | (r && r->connection && r->connection->user) ? r->connection->user : "NULL" |
d3bea354 | 288 | #endif |
289 | ); | |
3f4fda20 | 290 | |
291 | /* pull the server config record that we care about... */ | |
292 | ||
293 | if ( r ) { | |
294 | cfg = retrieve_config(r); | |
295 | } else { | |
296 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, | |
42d78dfb | 297 | "mod_waklog: set_auth using no config" ); |
3f4fda20 | 298 | getModConfig (cfg, s); |
299 | } | |
300 | ||
301 | if ( ! cfg ) { | |
302 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: cfg is %d", cfg ); | |
303 | } | |
c760f0a1 | 304 | |
305 | ||
3f4fda20 | 306 | if ( self ) { |
307 | /* pull out our principal name and stuff from the environment -- webauth better have sent | |
c760f0a1 | 308 | through. */ |
309 | ||
310 | #ifdef APACHE2 | |
3f4fda20 | 311 | if ( ! ( r && r->connection && r->user )) { |
312 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: self authentication selected, but no data available"); | |
7c53b5d0 | 313 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: r->user=%s", (r->user==NULL ? "null" : r->user==NULL)); |
3f4fda20 | 314 | return -1; |
315 | } | |
316 | ||
317 | strncpy(k5user, r->user, sizeof(k5user)); | |
c760f0a1 | 318 | #else |
319 | if ( ! (r && r->connection && r->connection->user)) { | |
320 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: self authentication selected, but no username available"); | |
3f4fda20 | 321 | return -1; |
c760f0a1 | 322 | } |
323 | ||
324 | strncpy(k5user, r->connection->user, sizeof(k5user)); | |
325 | #endif | |
326 | /* if they've supplied a credentials cache */ | |
327 | k5path = (char *) MK_TABLE_GET( r->subprocess_env, "KRB5CCNAME" ); | |
328 | ||
329 | /* the other thing we need is someone's password */ | |
330 | k5secret = (char *) MK_TABLE_GET( r->notes, "ATTR_PASSWORD" ); | |
3f4fda20 | 331 | |
332 | /* we'll pick this up later after we've checked the cache and current state */ | |
333 | ||
334 | } else | |
c760f0a1 | 335 | if ( principal ) { |
336 | strncpy(k5user, principal, sizeof(k5user)); | |
98534230 | 337 | } else |
c760f0a1 | 338 | #ifdef APACHE2 |
339 | if (r && r->user) { | |
340 | strncpy(k5user, r->user, sizeof(k5user)); | |
341 | } | |
342 | #else | |
343 | if (r && r->connection && r->connection->user) { | |
344 | strncpy(k5user, r->connection->user, sizeof(k5user)); | |
3f4fda20 | 345 | } |
c760f0a1 | 346 | #endif |
3f4fda20 | 347 | |
7c53b5d0 | 348 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: set_auth: k5user=%s", k5user ? k5user : "NULL"); |
3f4fda20 | 349 | mytime = time(0); |
350 | ||
351 | /* see if we should just go ahead and ignore this call, since we already should be set to these | |
352 | credentials */ | |
313dde40 | 353 | |
3f4fda20 | 354 | if ( ! storeonly ) { |
313dde40 | 355 | |
3f4fda20 | 356 | #ifdef use_pthreads |
357 | pthread_rwlock_rdlock( sharedlock ); | |
358 | #else | |
359 | rw_rdlock( sharedlock ); | |
360 | #endif | |
313dde40 | 361 | |
3f4fda20 | 362 | for ( i = 0; i < SHARED_TABLE_SIZE; ++i ) { |
363 | ||
364 | /* if it's a token for the principal we're looking for, and it hasn't expired yet */ | |
365 | ||
366 | if ( ( !strcmp( k5user, | |
367 | sharedspace->sharedtokens[i].clientprincipal ) ) && | |
368 | ( sharedspace->sharedtokens[i].token.endTime > mytime ) ) { | |
369 | ||
370 | if ( ! memcmp(&child.token, &sharedspace->sharedtokens[i].token, sizeof(child.token) ) ) { | |
371 | indentical = 1; | |
372 | } else { | |
373 | indentical = 0; | |
374 | } | |
375 | ||
376 | /* copy the token out of the cache and into the child object */ | |
377 | ||
378 | strcpy(child.clientprincipal, sharedspace->sharedtokens[i].clientprincipal ); | |
379 | memcpy(&child.token, &sharedspace->sharedtokens[i].token, sizeof(child.token)); | |
380 | memcpy(&child.server, &sharedspace->sharedtokens[i].server, sizeof(child.server)); | |
381 | memcpy(&child.client, &sharedspace->sharedtokens[i].client, sizeof(child.client)); | |
382 | ||
383 | /* set our last used time thing */ | |
384 | sharedspace->sharedtokens[i].lastused = mytime; | |
385 | ||
386 | usecached = 1; | |
387 | ||
388 | break; | |
389 | ||
390 | } | |
391 | ||
392 | } | |
393 | ||
394 | /* release the lock on the token cache */ | |
395 | #ifdef use_pthreads | |
396 | pthread_rwlock_unlock( sharedlock ); | |
397 | #else | |
398 | rw_unlock( sharedlock ); | |
399 | #endif | |
313dde40 | 400 | |
3f4fda20 | 401 | if ( usecached ) { |
402 | /* release the lock on the token cache */ | |
403 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, | |
404 | "mod_waklog: set_auth using shared token %d for %s", i, k5user ); | |
405 | ||
406 | } | |
407 | ||
408 | /* if this is something that was in the cache, and it's the same as the token we already have stored, | |
409 | and we weren't calling this just to renew it... */ | |
410 | ||
411 | if ( usecached && indentical ) { | |
412 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: token is identical for %s", k5user ); | |
413 | return 0; | |
414 | } | |
415 | ||
416 | } | |
7c53b5d0 | 417 | |
3f4fda20 | 418 | /* if 'usecached' isn't set, we've got to get our tokens from somewhere... */ |
3f4fda20 | 419 | if (( ! usecached ) && ( k5user )) { |
313dde40 | 420 | |
3f4fda20 | 421 | /* clear out the creds structure */ |
422 | memset((void *) &v5creds, 0, sizeof(v5creds)); | |
423 | ||
424 | /* create a principal out of our k5user string */ | |
425 | ||
c760f0a1 | 426 | if ( ( kerror = krb5_parse_name (child.kcontext, k5user, &kprinc ) ) ) { |
3f4fda20 | 427 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_parse_name %s", (char *) error_message(kerror) ); |
428 | goto cleanup; | |
429 | } | |
430 | ||
431 | /* create the credentials options */ | |
432 | ||
433 | krb5_get_init_creds_opt_init ( &kopts ); | |
434 | krb5_get_init_creds_opt_set_tkt_life ( &kopts, TKT_LIFE ); | |
435 | krb5_get_init_creds_opt_set_renew_life ( &kopts, 0 ); | |
436 | krb5_get_init_creds_opt_set_forwardable ( &kopts, 0 ); | |
437 | krb5_get_init_creds_opt_set_proxiable ( &kopts, 0 ); | |
438 | ||
c760f0a1 | 439 | if ( keytab || k5secret ) { |
3f4fda20 | 440 | |
c760f0a1 | 441 | if (keytab) { |
442 | /* if we've been passed a keytab, we're going to be getting our credentials from it */ | |
3f4fda20 | 443 | |
c760f0a1 | 444 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: using keytab %s", keytab); |
3f4fda20 | 445 | |
c760f0a1 | 446 | if ( ( kerror = krb5_kt_resolve(child.kcontext, keytab, &krb5kt ) ) ) { |
447 | log_error( APLOG_MARK, APLOG_ERR, 0, s, | |
448 | "mod_waklog: krb5_kt_resolve %s", error_message(kerror) ); | |
449 | goto cleanup; | |
450 | } | |
3f4fda20 | 451 | |
c760f0a1 | 452 | if ((kerror = krb5_get_init_creds_keytab (child.kcontext, &v5creds, |
453 | kprinc, krb5kt, 0, NULL, &kopts ) ) ) { | |
454 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_get_init_creds_keytab %s", | |
455 | error_message(kerror) ); | |
456 | goto cleanup; | |
457 | } | |
458 | } else if (k5secret) { | |
3f4fda20 | 459 | |
c760f0a1 | 460 | /* If the WebSSO is lame enough to provide a secret, then try and use that to get a token */ |
3f4fda20 | 461 | |
c760f0a1 | 462 | if ((kerror = krb5_get_init_creds_password ( child.kcontext, &v5creds, |
463 | kprinc, k5secret, NULL, NULL, 0, NULL, &kopts ) ) ) { | |
464 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_get_init_creds_password %s", | |
465 | error_message(kerror) ); | |
466 | /* nuke the password so it doesn't end up in core files */ | |
467 | memset(k5secret, 0, sizeof(k5secret)); | |
468 | goto cleanup; | |
469 | } | |
3f4fda20 | 470 | |
c760f0a1 | 471 | memset(k5secret, 0, sizeof(k5secret)); |
3f4fda20 | 472 | } |
c760f0a1 | 473 | |
3f4fda20 | 474 | /* initialize the credentials cache and store the stuff we just got */ |
c760f0a1 | 475 | if ( ( kerror = krb5_cc_initialize (child.kcontext, child.ccache, kprinc) ) ) { |
7c53b5d0 | 476 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: init credentials cache %s", |
477 | error_message(kerror)); | |
478 | goto cleanup; | |
479 | } | |
3f4fda20 | 480 | |
c760f0a1 | 481 | if ( ( kerror = krb5_cc_store_cred(child.kcontext, child.ccache, &v5creds) ) ) { |
7c53b5d0 | 482 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: cannot store credentials %s", |
483 | error_message(kerror)); | |
484 | goto cleanup; | |
485 | } | |
3f4fda20 | 486 | |
c760f0a1 | 487 | krb5_free_cred_contents(child.kcontext, &v5creds); |
488 | ||
489 | if ( kerror ) { | |
490 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: store cred %s", error_message(kerror)); | |
491 | goto cleanup; | |
492 | } | |
493 | ||
494 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: kinit ok for %s", k5user ); | |
495 | ||
496 | } else if (k5path) { | |
497 | /* If we've got a path to a credentials cache, then try and use that. We can't just | |
498 | * replace child.creds, because we want to ensure that only this request gets access to | |
499 | * that cache */ | |
500 | ||
501 | if ( ( kerror = krb5_cc_resolve(child.kcontext, k5path, &clientccache ) ) ) { | |
502 | log_error(APLOG_MARK, APLOG_ERR, 0, s, | |
503 | "mod_waklog: can't open provided credentials cache %s err=%d", | |
504 | k5path, kerror ); | |
505 | goto cleanup; | |
506 | } | |
507 | ||
508 | use_client_credentials = 1; | |
509 | } | |
3f4fda20 | 510 | |
3f4fda20 | 511 | /* now, to the 'aklog' portion of our program. */ |
512 | ||
c8563f50 | 513 | /** we make two attempts here, one for afs@REALM and one for afs/cell@REALM */ |
514 | for(attempt = 0; attempt <= 1; attempt++) { | |
98534230 | 515 | strncpy( buf, "afs", sizeof(buf) - 1 ); |
c8563f50 | 516 | cell_in_principal = (cfg->cell_in_principal + attempt) % 2; |
517 | ||
518 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: cell_in_principal=%d", cell_in_principal ); | |
519 | if (cell_in_principal) { | |
98534230 | 520 | strncat(buf, "/", sizeof(buf) - strlen(buf) - 1); |
c8563f50 | 521 | strncat(buf, cfg->afs_cell, sizeof(buf) - strlen(buf) - 1); |
522 | } | |
5d0827ae | 523 | if (cfg->afs_cell_realm != NULL) { |
98534230 | 524 | strncat(buf, "@", sizeof(buf) - strlen(buf) - 1); |
525 | strncat(buf, cfg->afs_cell_realm, sizeof(buf) - strlen(buf) - 1); | |
526 | } | |
c8563f50 | 527 | |
528 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: using AFS principal: %s", buf); | |
529 | ||
530 | if ((kerror = krb5_parse_name (child.kcontext, buf, &increds.server))) { | |
531 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_parse name %s", error_message(kerror)); | |
532 | goto cleanup; | |
533 | } | |
7c53b5d0 | 534 | |
c760f0a1 | 535 | if (!use_client_credentials) { |
536 | clientccache = child.ccache; | |
537 | } | |
538 | ||
539 | if ((kerror = krb5_cc_get_principal(child.kcontext, clientccache, &increds.client))) { | |
540 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_cc_get_princ %s %p", error_message(kerror), clientccache); | |
c8563f50 | 541 | goto cleanup; |
542 | } | |
543 | ||
544 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: retrieved data from ccache for %s", k5user); | |
545 | ||
546 | increds.times.endtime = 0; | |
547 | ||
548 | increds.keyblock.enctype = ENCTYPE_DES_CBC_CRC; | |
549 | ||
c760f0a1 | 550 | if ( ( kerror = krb5_get_credentials (child.kcontext, 0, clientccache, &increds, &v5credsp ) ) ) { |
c8563f50 | 551 | /* only complain once we've tried both afs@REALM and afs/cell@REALM */ |
552 | if (attempt>=1) { | |
553 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: krb5_get_credentials: %s", | |
554 | error_message(kerror)); | |
555 | goto cleanup; | |
556 | } else { | |
557 | continue; | |
558 | } | |
559 | } | |
560 | cfg->cell_in_principal = cell_in_principal; | |
561 | break; | |
3f4fda20 | 562 | } |
c8563f50 | 563 | |
3f4fda20 | 564 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: get_credentials passed for %s", k5user); |
565 | ||
566 | if ( v5credsp->ticket.length >= MAXKTCTICKETLEN ) { | |
567 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: ticket size (%d) too big to fake", | |
568 | v5credsp->ticket.length); | |
569 | goto cleanup; | |
570 | } | |
313dde40 | 571 | |
3f4fda20 | 572 | memset(&token, 0, sizeof(struct ktc_token)); |
573 | ||
574 | token.startTime = v5credsp->times.starttime ? v5credsp->times.starttime : v5credsp->times.authtime; | |
575 | token.endTime = v5credsp->times.endtime; | |
576 | ||
577 | memmove( &token.sessionKey, v5credsp->keyblock.contents, v5credsp->keyblock.length); | |
578 | token.kvno = RXKAD_TKT_TYPE_KERBEROS_V5; | |
579 | token.ticketLen = v5credsp->ticket.length; | |
580 | memmove( token.ticket, v5credsp->ticket.data, token.ticketLen); | |
581 | ||
582 | /* build the name */ | |
583 | ||
584 | memmove( buf, v5credsp->client->data[0].data, min(v5credsp->client->data[0].length, | |
585 | MAXKTCNAMELEN -1 )); | |
586 | buf[v5credsp->client->data[0].length] = '\0'; | |
587 | if ( v5credsp->client->length > 1 ) { | |
588 | strncat(buf, ".", sizeof(buf) - strlen(buf) - 1); | |
589 | buflen = strlen(buf); | |
590 | memmove(buf + buflen, v5credsp->client->data[1].data, | |
591 | min(v5credsp->client->data[1].length, | |
592 | MAXKTCNAMELEN - strlen(buf) - 1)); | |
593 | buf[buflen + v5credsp->client->data[1].length] = '\0'; | |
594 | } | |
595 | ||
596 | /* assemble the client */ | |
597 | strncpy(client.name, buf, sizeof(client.name) - 1 ); | |
598 | strncpy(client.instance, "", sizeof(client.instance) - 1 ); | |
599 | memmove(buf, v5credsp->client->realm.data, min(v5credsp->client->realm.length, | |
600 | MAXKTCNAMELEN - 1)); | |
601 | buf[v5credsp->client->realm.length] = '\0'; | |
602 | strncpy(client.cell, buf, sizeof(client.cell)); | |
603 | ||
604 | /* assemble the server's cell */ | |
891fb458 | 605 | strncpy(server.cell, cfg->afs_cell, sizeof(server.cell) - 1); |
3f4fda20 | 606 | |
607 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: preparing to init PTS connection for %s", server.cell); | |
608 | ||
609 | /* fill out the AFS ID in the client name */ | |
610 | /* we've done a pr_Initialize in the child_init -- once, per process. If you try to do it more | |
611 | * strange things seem to happen. */ | |
612 | ||
613 | { | |
614 | afs_int32 viceId = 0; | |
615 | ||
616 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: making PTS call to look up %s", client.name); | |
617 | ||
618 | if ( ( rc = pr_SNameToId( client.name, &viceId ) ) == 0 ) { | |
619 | snprintf( client.name, sizeof(client.name), "AFS ID %d", viceId ); | |
620 | } else { | |
621 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: PTS call returned error %d ", rc); | |
622 | } | |
623 | ||
624 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: PTS call returned %s ", client.name); | |
625 | ||
626 | } | |
627 | ||
628 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: server: name %s, instance %s, cell %s", | |
629 | server.name, server.instance, server.cell ); | |
630 | ||
631 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: client: name %s, instance %s, cell %s", | |
632 | client.name, client.instance, client.cell ); | |
633 | ||
634 | /* copy the resulting stuff into the child structure */ | |
635 | ||
636 | strncpy(child.clientprincipal, k5user, sizeof(child.clientprincipal)); | |
637 | memcpy(&child.token, &token, sizeof(child.token)); | |
638 | memcpy(&child.server, &server, sizeof(child.server)); | |
639 | memcpy(&child.client, &client, sizeof(child.client)); | |
640 | ||
641 | /* stuff the resulting token-related stuff into our shared token cache */ | |
642 | /* note, that anything that was set from a keytab is "persistant", and is immune | |
643 | * from LRU-aging. This is because nothing but the process that's running as root | |
644 | * can update these, and it's running every hour or so and renewing these tokens. | |
645 | * and we don't want them aged out. | |
646 | */ | |
647 | ||
648 | mytime = oldest_time = time(0); | |
649 | ||
650 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: waiting for shared space for %s ", k5user); | |
4e1ae1cd | 651 | |
3f4fda20 | 652 | #ifdef use_pthreads |
653 | pthread_rwlock_wrlock(sharedlock); | |
654 | #else | |
655 | rw_wrlock(sharedlock); | |
656 | #endif | |
4e1ae1cd | 657 | |
3f4fda20 | 658 | for( i = ( SHARED_TABLE_SIZE - 1 ); i >= 0; i-- ) { |
659 | if ( ( sharedspace->sharedtokens[i].lastused <= oldest_time) && | |
660 | ( sharedspace->sharedtokens[i].persist == 0 ) ) { | |
661 | oldest = i; | |
662 | oldest_time = sharedspace->sharedtokens[i].lastused; | |
663 | } | |
664 | if ( ! strcmp ( sharedspace->sharedtokens[i].clientprincipal, | |
665 | child.clientprincipal ) ) { | |
666 | memcpy(&sharedspace->sharedtokens[i].token, &child.token, sizeof(child.token) ); | |
667 | memcpy(&sharedspace->sharedtokens[i].client, &child.client, sizeof(child.client) ); | |
668 | memcpy(&sharedspace->sharedtokens[i].server, &child.server, sizeof(child.server) ); | |
669 | sharedspace->sharedtokens[i].lastused = mytime; | |
670 | sharedspace->sharedtokens[i].persist = keytab ? 1 : 0; | |
671 | stored = i; | |
672 | break; | |
673 | } | |
674 | } | |
675 | ||
676 | if ( stored == -1 ) { | |
677 | memcpy(&sharedspace->sharedtokens[oldest].token, &child.token, sizeof(child.token) ); | |
678 | memcpy(&sharedspace->sharedtokens[oldest].client, &child.client, sizeof(child.client) ); | |
679 | memcpy(&sharedspace->sharedtokens[oldest].server, &child.server, sizeof(child.server) ); | |
680 | strcpy(sharedspace->sharedtokens[oldest].clientprincipal, child.clientprincipal ); | |
681 | sharedspace->sharedtokens[oldest].lastused = mytime; | |
682 | sharedspace->sharedtokens[oldest].persist = keytab ? 1 : 0; | |
683 | stored = oldest; | |
684 | } | |
3ed1e28a | 685 | |
3f4fda20 | 686 | #ifdef use_pthreads |
687 | pthread_rwlock_unlock(sharedlock); | |
688 | #else | |
689 | rw_unlock(sharedlock); | |
690 | #endif | |
691 | ||
692 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: token stored in slot %d for %s", stored, | |
693 | child.clientprincipal ); | |
694 | ||
695 | } else if ( ! usecached ) { | |
696 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: set_auth divergent case"); | |
697 | } | |
698 | ||
699 | if ( storeonly ) { | |
700 | goto cleanup; | |
701 | } | |
702 | ||
703 | usecachedtoken: | |
704 | ||
705 | /* don't ask. Something about AIX. We're leaving it here.*/ | |
706 | /* write(2, "", 0); */ | |
707 | ||
708 | /* we try twice, because sometimes the first one fails. Dunno why, but it always works the second time */ | |
709 | ||
710 | if ((rc = ktc_SetToken(&child.server, &child.token, &child.client, 0))) { | |
711 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: settoken returned %s for %s -- trying again", | |
712 | error_message(rc), k5user); | |
713 | if ((rc = ktc_SetToken(&child.server, &child.token, &child.client, 0))) { | |
714 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: settoken2 returned %s for %s", | |
715 | error_message(rc), k5user); | |
716 | goto cleanup; | |
717 | } | |
718 | } | |
719 | ||
720 | cleanup: | |
c760f0a1 | 721 | if (use_client_credentials) |
722 | krb5_cc_close(child.kcontext, clientccache); | |
3f4fda20 | 723 | if ( v5credsp ) |
724 | krb5_free_cred_contents(child.kcontext, v5credsp); | |
725 | if ( increds.client ) | |
726 | krb5_free_principal (child.kcontext, increds.client); | |
727 | if ( increds.server ) | |
728 | krb5_free_principal (child.kcontext, increds.server); | |
729 | if ( krb5kt ) | |
730 | (void) krb5_kt_close(child.kcontext, krb5kt); | |
731 | if ( kprinc ) | |
732 | krb5_free_principal (child.kcontext, kprinc); | |
733 | ||
734 | if ( rc ) { | |
735 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: set_auth ending with %d", rc ); | |
736 | } else if ( kerror ) { | |
737 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: set_auth ending with krb5 error %d, %s", kerror, error_message(kerror)); | |
738 | } else { | |
739 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: set_auth ending ok"); | |
740 | } | |
741 | ||
742 | return kerror ? (int) kerror : (int) rc; | |
743 | ||
4e1ae1cd | 744 | } |
745 | ||
746 | ||
4480093f | 747 | int get_cfg_usertokens(waklog_config *cfg) |
748 | { | |
749 | if (cfg->usertokens==WAKLOG_UNSET) | |
750 | return 0; /* default */ | |
751 | return cfg->usertokens; | |
752 | } | |
753 | ||
754 | int get_cfg_protect(waklog_config *cfg) | |
755 | { | |
756 | if (cfg->protect==WAKLOG_UNSET) | |
757 | return 0; /* default */ | |
758 | return cfg->protect; | |
759 | } | |
760 | ||
761 | int get_cfg_disable_token_cache(waklog_config *cfg) | |
762 | { | |
763 | if (cfg->disable_token_cache==WAKLOG_UNSET) | |
764 | return 0; /* default */ | |
765 | return cfg->disable_token_cache; | |
766 | } | |
767 | ||
7193eb01 | 768 | |
3f4fda20 | 769 | static void * |
770 | waklog_create_server_config (MK_POOL * p, server_rec * s) | |
771 | { | |
772 | waklog_config *cfg; | |
773 | ||
774 | cfg = (waklog_config *) ap_pcalloc (p, sizeof (waklog_config)); | |
775 | cfg->p = p; | |
776 | memset(cfg, 0, sizeof(waklog_config)); | |
777 | cfg->path = "(server)"; | |
778 | cfg->protect = WAKLOG_UNSET; | |
779 | cfg->usertokens = WAKLOG_UNSET; | |
21a7788b | 780 | cfg->disable_token_cache = WAKLOG_UNSET; |
5d0827ae | 781 | cfg->keytab = NULL; |
782 | cfg->principal = NULL; | |
783 | cfg->default_principal = NULL; | |
784 | cfg->default_keytab = NULL; | |
785 | cfg->afs_cell = NULL; | |
786 | cfg->afs_cell_realm = NULL; | |
3f4fda20 | 787 | cfg->forked = 0; |
788 | cfg->configured = 0; | |
789 | ||
790 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, | |
42d78dfb | 791 | "mod_waklog: server config created."); |
3f4fda20 | 792 | |
793 | return (cfg); | |
794 | } | |
7193eb01 | 795 | |
3f4fda20 | 796 | /* initialize with host-config information */ |
58bbdc54 | 797 | |
3f4fda20 | 798 | static void * |
799 | waklog_create_dir_config (MK_POOL * p, char *dir) | |
800 | { | |
801 | waklog_config *cfg; | |
802 | ||
803 | cfg = (waklog_config *) ap_pcalloc (p, sizeof (waklog_config)); | |
804 | memset(cfg, 0, sizeof(waklog_config)); | |
805 | cfg->p = p; | |
806 | cfg->path = ap_pstrdup(p, dir ); | |
807 | cfg->protect = WAKLOG_UNSET; | |
808 | cfg->usertokens = WAKLOG_UNSET; | |
21a7788b | 809 | cfg->disable_token_cache = WAKLOG_UNSET; |
5d0827ae | 810 | cfg->keytab = NULL; |
811 | cfg->principal = NULL; | |
812 | cfg->default_principal = NULL; | |
813 | cfg->default_keytab = NULL; | |
814 | cfg->afs_cell = NULL; | |
815 | cfg->afs_cell_realm = NULL; | |
3f4fda20 | 816 | cfg->forked = 0; |
817 | cfg->configured = 0; | |
818 | ||
819 | return (cfg); | |
58bbdc54 | 820 | } |
821 | ||
3f4fda20 | 822 | static void *waklog_merge_dir_config(MK_POOL *p, void *parent_conf, void *newloc_conf) { |
58bbdc54 | 823 | |
3f4fda20 | 824 | waklog_config *merged = ( waklog_config * ) ap_pcalloc(p, sizeof(waklog_config ) ); |
825 | waklog_config *parent = ( waklog_config * ) parent_conf; | |
826 | waklog_config *child = ( waklog_config * ) newloc_conf; | |
827 | ||
828 | merged->protect = child->protect != WAKLOG_UNSET ? child->protect : parent->protect; | |
829 | ||
5d0827ae | 830 | merged->path = child->path != NULL ? child->path : parent->path; |
3f4fda20 | 831 | |
832 | merged->usertokens = child->usertokens != WAKLOG_UNSET ? child->usertokens : parent->usertokens; | |
21a7788b | 833 | |
834 | merged->disable_token_cache = child->disable_token_cache != WAKLOG_UNSET ? child->disable_token_cache : parent->disable_token_cache; | |
3f4fda20 | 835 | |
5d0827ae | 836 | merged->principal = child->principal != NULL ? child->principal : parent->principal; |
3f4fda20 | 837 | |
5d0827ae | 838 | merged->keytab = child->keytab != NULL ? child->keytab : parent->keytab; |
3f4fda20 | 839 | |
5d0827ae | 840 | merged->default_keytab = child->default_keytab != NULL ? child->default_keytab : parent->default_keytab; |
3f4fda20 | 841 | |
5d0827ae | 842 | merged->default_principal = child->default_principal != NULL ? child->default_principal : parent->default_principal; |
3f4fda20 | 843 | |
5d0827ae | 844 | merged->afs_cell = child->afs_cell != NULL ? child->afs_cell : parent->afs_cell; |
98534230 | 845 | |
5d0827ae | 846 | merged->afs_cell_realm = child->afs_cell_realm != NULL ? child->afs_cell_realm : parent->afs_cell_realm; |
3f4fda20 | 847 | |
848 | return (void *) merged; | |
849 | ||
850 | } | |
58bbdc54 | 851 | |
3f4fda20 | 852 | static void *waklog_merge_server_config(MK_POOL *p, void *parent_conf, void *newloc_conf) { |
58bbdc54 | 853 | |
3f4fda20 | 854 | waklog_config *merged = ( waklog_config * ) ap_pcalloc(p, sizeof(waklog_config ) ); |
855 | waklog_config *pconf = ( waklog_config * ) parent_conf; | |
856 | waklog_config *nconf = ( waklog_config * ) newloc_conf; | |
857 | ||
858 | merged->protect = nconf->protect == WAKLOG_UNSET ? pconf->protect : nconf->protect; | |
58bbdc54 | 859 | |
3f4fda20 | 860 | merged->usertokens = nconf->usertokens == WAKLOG_UNSET ? pconf->usertokens : nconf->usertokens; |
58bbdc54 | 861 | |
bce7d4d9 | 862 | merged->disable_token_cache = nconf->disable_token_cache == WAKLOG_UNSET ? pconf->disable_token_cache : nconf->disable_token_cache; |
21a7788b | 863 | |
5d0827ae | 864 | merged->keytab = nconf->keytab == NULL ? ap_pstrdup(p, pconf->keytab) : |
865 | ( nconf->keytab == NULL ? NULL : ap_pstrdup(p, nconf->keytab) ); | |
3f4fda20 | 866 | |
5d0827ae | 867 | merged->principal = nconf->principal == NULL ? ap_pstrdup(p, pconf->principal) : |
868 | ( nconf->principal == NULL ? NULL : ap_pstrdup(p, nconf->principal) ); | |
3f4fda20 | 869 | |
5d0827ae | 870 | merged->afs_cell = nconf->afs_cell == NULL ? ap_pstrdup(p, pconf->afs_cell) : |
871 | ( nconf->afs_cell == NULL ? NULL : ap_pstrdup(p, nconf->afs_cell) ); | |
3f4fda20 | 872 | |
5d0827ae | 873 | merged->afs_cell_realm = nconf->afs_cell_realm == NULL ? ap_pstrdup(p, pconf->afs_cell_realm) : |
874 | ( nconf->afs_cell_realm == NULL ? NULL : ap_pstrdup(p, nconf->afs_cell_realm) ); | |
98534230 | 875 | |
5d0827ae | 876 | merged->default_keytab = nconf->default_keytab == NULL ? ap_pstrdup(p, pconf->default_keytab) : |
877 | ( nconf->default_keytab == NULL ? NULL : ap_pstrdup(p, nconf->default_keytab) ); | |
58bbdc54 | 878 | |
5d0827ae | 879 | merged->default_principal = nconf->default_principal == NULL ? ap_pstrdup(p, pconf->default_principal) : |
880 | ( nconf->default_principal == NULL ? NULL : ap_pstrdup(p, nconf->default_principal) ); | |
3f4fda20 | 881 | |
882 | ||
883 | return (void *) merged; | |
884 | ||
885 | } | |
886 | ||
887 | static const char * | |
21a7788b | 888 | set_waklog_enabled (cmd_parms * params, void *mconfig, int flag) |
58bbdc54 | 889 | { |
3f4fda20 | 890 | waklog_config *cfg = mconfig ? ( waklog_config * ) mconfig : |
891 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
892 | ||
893 | cfg->protect = flag; | |
894 | cfg->configured = 1; | |
895 | log_error (APLOG_MARK, APLOG_DEBUG, 0, params->server, | |
21a7788b | 896 | "mod_waklog: waklog_enabled set on %s", cfg->path ? cfg->path : "NULL"); |
3f4fda20 | 897 | return (NULL); |
898 | } | |
58bbdc54 | 899 | |
7193eb01 | 900 | |
3f4fda20 | 901 | /* this adds a principal/keytab pair to get their tokens renewed by the |
902 | child process every few centons. */ | |
7193eb01 | 903 | |
3f4fda20 | 904 | void add_to_renewtable(MK_POOL *p, char *keytab, char *principal) { |
87822447 | 905 | |
3f4fda20 | 906 | int i; |
907 | ||
908 | if ( renewcount >= SHARED_TABLE_SIZE ) { | |
909 | log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL, "mod_waklog: big problem. Increase the SHARED_TABLE_SIZE or \ | |
910 | decrease your tokens."); | |
b74fad73 | 911 | return; |
3f4fda20 | 912 | } |
913 | ||
914 | /* check to see if it's already there */ | |
915 | ||
916 | for ( i = 0; i < renewcount; i++ ) { | |
917 | if ( ! strcmp(renewtable[i].principal, principal ) ) { | |
918 | return; | |
919 | } | |
920 | } | |
921 | ||
922 | renewtable[renewcount].keytab = ap_pstrdup(p, keytab); | |
923 | renewtable[renewcount].principal = ap_pstrdup(p, principal); | |
924 | renewtable[renewcount].lastrenewed = 0; | |
925 | ++renewcount; | |
926 | ||
b74fad73 | 927 | } |
928 | ||
3f4fda20 | 929 | static const char * |
21a7788b | 930 | set_waklog_location_principal (cmd_parms *params, void *mconfig, char *principal, char *keytab) |
3f4fda20 | 931 | { |
932 | waklog_config *cfg = mconfig ? ( waklog_config * ) mconfig : | |
933 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
934 | ||
935 | log_error (APLOG_MARK, APLOG_DEBUG, 0, params->server, | |
42d78dfb | 936 | "mod_waklog: configuring principal: %s, keytab: %s", principal, keytab); |
937 | ||
938 | cfg->principal = ap_pstrdup(params->pool, principal); | |
3f4fda20 | 939 | cfg->keytab = ap_pstrdup (params->pool, keytab); |
940 | ||
941 | add_to_renewtable(params->pool, keytab, principal); | |
942 | ||
943 | cfg->configured = 1; | |
944 | ||
945 | return (NULL); | |
946 | } | |
b74fad73 | 947 | |
3f4fda20 | 948 | static const char * |
21a7788b | 949 | set_waklog_afs_cell (cmd_parms * params, void *mconfig, char *file) |
313dde40 | 950 | { |
891fb458 | 951 | waklog_config *waklog_mconfig = ( waklog_config * ) mconfig; |
952 | waklog_config *waklog_srvconfig = | |
3f4fda20 | 953 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); |
954 | ||
891fb458 | 955 | log_error (APLOG_MARK, APLOG_INFO, 0, params->server, |
42d78dfb | 956 | "mod_waklog: will use afs_cell: %s", file); |
313dde40 | 957 | |
678051d7 | 958 | // Prefer afs/cell@REALM over afs@REALM, just like the OpenAFS tools |
959 | waklog_srvconfig->cell_in_principal = 1; | |
960 | ||
891fb458 | 961 | waklog_srvconfig->afs_cell = ap_pstrdup (params->pool, file); |
962 | waklog_srvconfig->configured = 1; | |
963 | ||
964 | if (waklog_mconfig != NULL) { | |
c8563f50 | 965 | waklog_mconfig->cell_in_principal = waklog_srvconfig->cell_in_principal; |
891fb458 | 966 | waklog_mconfig->afs_cell = ap_pstrdup (params->pool, file); |
967 | waklog_mconfig->configured = 1; | |
968 | } | |
3f4fda20 | 969 | return (NULL); |
970 | } | |
58bbdc54 | 971 | |
98534230 | 972 | static const char * |
973 | set_waklog_afs_cell_realm (cmd_parms * params, void *mconfig, char *file) | |
974 | { | |
975 | waklog_config *waklog_mconfig = ( waklog_config * ) mconfig; | |
976 | waklog_config *waklog_srvconfig = | |
977 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
978 | ||
979 | log_error (APLOG_MARK, APLOG_INFO, 0, params->server, | |
980 | "mod_waklog: will use afs_cell_realm: %s", file); | |
981 | ||
982 | waklog_srvconfig->afs_cell_realm = ap_pstrdup (params->pool, file); | |
983 | ||
984 | if (waklog_mconfig != NULL) { | |
985 | waklog_mconfig->afs_cell_realm = ap_pstrdup (params->pool, file); | |
986 | } | |
987 | return (NULL); | |
988 | } | |
989 | ||
3f4fda20 | 990 | static const char * |
991 | set_waklog_default_principal (cmd_parms * params, void *mconfig, char *principal, char *keytab) | |
992 | { | |
993 | waklog_config *cfg = mconfig ? ( waklog_config * ) mconfig : | |
994 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
58bbdc54 | 995 | |
3f4fda20 | 996 | waklog_config *srvcfg = ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); |
4e1ae1cd | 997 | |
3f4fda20 | 998 | log_error (APLOG_MARK, APLOG_DEBUG, 0, params->server, |
42d78dfb | 999 | "mod_waklog: set default princ/keytab: %s, %s for %s", principal, keytab, cfg->path ? cfg->path : "NULL"); |
313dde40 | 1000 | |
3f4fda20 | 1001 | cfg->default_principal = ap_pstrdup (params->pool, principal); |
1002 | cfg->default_keytab = ap_pstrdup(params->pool, keytab ); | |
1003 | ||
1004 | /* this also gets set at the server level */ | |
1005 | if ( mconfig && ( ! cfg->path ) ) { | |
1006 | srvcfg->default_principal = ap_pstrdup (params->pool, principal); | |
1007 | srvcfg->default_keytab = ap_pstrdup(params->pool, keytab ); | |
1008 | } else { | |
1009 | log_error(APLOG_MARK, APLOG_ERR, 0, params->server, "only able to set default principal on a global level!"); | |
1010 | return "Unable to set DefaultPrincipal outside of top level config!"; | |
1011 | } | |
1012 | ||
1013 | add_to_renewtable( params->pool, keytab, principal ); | |
1014 | ||
1015 | cfg->configured = 1; | |
1016 | ||
1017 | return (NULL); | |
1018 | } | |
313dde40 | 1019 | |
3f4fda20 | 1020 | static const char * |
1021 | set_waklog_use_usertokens (cmd_parms * params, void *mconfig, int flag) | |
bed98ff9 | 1022 | { |
3f4fda20 | 1023 | waklog_config *cfg = mconfig ? ( waklog_config * ) mconfig : |
1024 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
bed98ff9 | 1025 | |
3f4fda20 | 1026 | cfg->usertokens = flag; |
bed98ff9 | 1027 | |
3f4fda20 | 1028 | cfg->configured = 1; |
bed98ff9 | 1029 | |
3f4fda20 | 1030 | log_error (APLOG_MARK, APLOG_DEBUG, 0, params->server, |
42d78dfb | 1031 | "mod_waklog: waklog_use_user_tokens set"); |
3f4fda20 | 1032 | return (NULL); |
bed98ff9 | 1033 | } |
1034 | ||
1035 | ||
21a7788b | 1036 | static const char * |
1037 | set_waklog_disable_token_cache (cmd_parms * params, void *mconfig, int flag) | |
1038 | { | |
1039 | waklog_config *cfg = mconfig ? ( waklog_config * ) mconfig : | |
1040 | ( waklog_config * ) ap_get_module_config(params->server->module_config, &waklog_module ); | |
1041 | ||
1042 | cfg->disable_token_cache = flag; | |
1043 | ||
1044 | cfg->configured = 1; | |
1045 | ||
1046 | log_error (APLOG_MARK, APLOG_DEBUG, 0, params->server, | |
1047 | "mod_waklog: waklog_disable_token_cache set"); | |
1048 | return (NULL); | |
1049 | } | |
1050 | ||
1051 | ||
c9d59a9c | 1052 | #ifndef APACHE2 |
3f4fda20 | 1053 | static void waklog_child_exit( server_rec *s, MK_POOL *p ) { |
1054 | #else | |
1055 | apr_status_t waklog_child_exit( void *sr ) { | |
4e1ae1cd | 1056 | |
3f4fda20 | 1057 | server_rec *s = (server_rec *) sr; |
1058 | #endif | |
1059 | ||
1060 | if ( child.ccache ) { | |
1061 | krb5_cc_close(child.kcontext, child.ccache); | |
1062 | } | |
1063 | ||
1064 | if ( child.kcontext ) { | |
1065 | krb5_free_context(child.kcontext); | |
1066 | } | |
1067 | ||
1068 | /* forget our tokens */ | |
1069 | ||
1070 | ktc_ForgetAllTokens (); | |
1071 | ||
1072 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, | |
42d78dfb | 1073 | "mod_waklog: waklog_child_exit complete"); |
4e1ae1cd | 1074 | |
c9d59a9c | 1075 | #ifdef APACHE2 |
3f4fda20 | 1076 | return APR_SUCCESS; |
1077 | #endif | |
1078 | ||
1079 | } | |
4e1ae1cd | 1080 | |
3f4fda20 | 1081 | static void |
c9d59a9c | 1082 | #ifdef APACHE2 |
3f4fda20 | 1083 | waklog_child_init (MK_POOL * p, server_rec * s) |
1084 | #else | |
1085 | waklog_child_init (server_rec * s, MK_POOL * p) | |
1086 | #endif | |
1087 | { | |
b52ccbb1 | 1088 | |
3f4fda20 | 1089 | krb5_error_code code; |
1090 | waklog_config *cfg; | |
1091 | ||
1092 | char *cell; | |
1093 | ||
3f4fda20 | 1094 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: child_init called for pid %d", getpid()); |
1095 | ||
1096 | if ( !sharedspace ) { | |
1097 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: child_init called without shared space? %d", getpid()); | |
1098 | return; | |
1099 | } | |
1100 | ||
1101 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: child_init called for pid %d", getpid()); | |
7193eb01 | 1102 | |
3f4fda20 | 1103 | memset (&child, 0, sizeof(child)); |
1104 | ||
c760f0a1 | 1105 | if ( ( code = krb5_init_context(&child.kcontext) ) ) { |
3f4fda20 | 1106 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't init kerberos context %d", code ); |
1107 | } | |
1108 | ||
c760f0a1 | 1109 | if ( ( code = krb5_cc_resolve(child.kcontext, "MEMORY:tmpcache", &child.ccache) ) ) { |
3f4fda20 | 1110 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't initialize in-memory credentials cache %d", code ); |
1111 | } | |
1112 | ||
1113 | if ( pag_for_children ) { | |
1114 | setpag (); | |
1115 | } | |
7193eb01 | 1116 | |
3f4fda20 | 1117 | getModConfig (cfg, s); |
7193eb01 | 1118 | |
5d0827ae | 1119 | if ( cfg->default_principal != NULL ) { |
3f4fda20 | 1120 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: child_init setting default user %s, %s", cfg->default_principal, cfg->default_keytab); |
1121 | set_auth( s, NULL, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1122 | } | |
7193eb01 | 1123 | |
891fb458 | 1124 | cell = strdup(cfg->afs_cell); |
3f4fda20 | 1125 | pr_Initialize( 0, AFSDIR_CLIENT_ETC_DIR, cell ); |
7193eb01 | 1126 | |
c9d59a9c | 1127 | #ifdef APACHE2 |
3f4fda20 | 1128 | apr_pool_cleanup_register(p, s, waklog_child_exit, apr_pool_cleanup_null); |
1129 | #endif | |
7193eb01 | 1130 | |
3f4fda20 | 1131 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, |
42d78dfb | 1132 | "mod_waklog: child_init returned"); |
7193eb01 | 1133 | |
3f4fda20 | 1134 | return; |
1135 | } | |
b52ccbb1 | 1136 | |
3f4fda20 | 1137 | command_rec waklog_cmds[] = { |
1138 | ||
21a7788b | 1139 | command ("WaklogAFSCell", set_waklog_afs_cell, 0, TAKE1, |
1140 | "Use the supplied AFS cell (required)"), | |
7193eb01 | 1141 | |
98534230 | 1142 | command ("WaklogAFSCellRealm", set_waklog_afs_cell_realm, 0, TAKE1, |
1143 | "Assume that the AFS cell belongs to the specified Kerberos realm (optional)"), | |
1144 | ||
21a7788b | 1145 | command ("WaklogEnabled", set_waklog_enabled, 0, FLAG, |
1146 | "enable waklog on a server, location, or directory basis"), | |
7193eb01 | 1147 | |
21a7788b | 1148 | command ("WaklogDefaultPrincipal", set_waklog_default_principal, 0, TAKE2, |
1149 | "Set the default principal that the server runs as"), | |
7193eb01 | 1150 | |
21a7788b | 1151 | command ("WaklogLocationPrincipal", set_waklog_location_principal, 0, TAKE2, |
1152 | "Set the principal on a <Location>-specific basis"), | |
7193eb01 | 1153 | |
21a7788b | 1154 | command ("WaklogDisableTokenCache", set_waklog_disable_token_cache, 0, FLAG, |
1155 | "Ignore the token cache (location-specific); useful for scripts that need kerberos tickets."), | |
1156 | ||
1157 | command ("WaklogUseUserTokens", set_waklog_use_usertokens, 0, FLAG, | |
1158 | "Use the requesting user tokens (from webauth)"), | |
1159 | ||
3f4fda20 | 1160 | {NULL} |
1161 | }; | |
7193eb01 | 1162 | |
7193eb01 | 1163 | |
3f4fda20 | 1164 | /* not currently using this */ |
7193eb01 | 1165 | |
3f4fda20 | 1166 | static int |
1167 | token_cleanup (void *data) | |
1168 | { | |
1169 | request_rec *r = (request_rec *) data; | |
e2df6441 | 1170 | |
3f4fda20 | 1171 | if (child.token.ticketLen) |
1172 | { | |
1173 | memset (&child.token, 0, sizeof (struct ktc_token)); | |
e21f34f0 | 1174 | |
3f4fda20 | 1175 | ktc_ForgetAllTokens (); |
7193eb01 | 1176 | |
3f4fda20 | 1177 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1178 | "mod_waklog: ktc_ForgetAllTokens succeeded: pid: %d", |
1179 | getpid ()); | |
3f4fda20 | 1180 | } |
1181 | return 0; | |
7193eb01 | 1182 | } |
1183 | ||
3f4fda20 | 1184 | static int |
1185 | waklog_child_routine (void *data, child_info * pinfo) | |
7193eb01 | 1186 | { |
3f4fda20 | 1187 | int i; |
1188 | server_rec *s = (server_rec *) data; | |
1189 | krb5_error_code code; | |
1190 | char *cell; | |
1191 | time_t sleep_time = ( TKT_LIFE / 2 ) ; | |
1192 | time_t when; | |
1193 | time_t left; | |
1194 | waklog_config *cfg; | |
1195 | ||
1196 | getModConfig( cfg, s ); | |
1197 | ||
1198 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: waklog_child_routine started, running as %d", getuid()); | |
1199 | ||
1200 | memset (&child, 0, sizeof(child)); | |
1201 | ||
c760f0a1 | 1202 | if ( ( code = krb5_init_context(&child.kcontext) ) ) { |
3f4fda20 | 1203 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't init kerberos context %d", code ); |
1204 | } | |
1205 | ||
c760f0a1 | 1206 | if ( ( code = krb5_cc_resolve(child.kcontext, "MEMORY:tmpcache", &child.ccache) ) ) { |
3f4fda20 | 1207 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: can't initialize in-memory credentials cache %d", code ); |
1208 | } | |
1209 | ||
c760f0a1 | 1210 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: about to pr_Initialize"); |
1211 | ||
3f4fda20 | 1212 | /* need to do this so we can make PTS calls */ |
891fb458 | 1213 | cell = strdup(cfg->afs_cell); /* stupid */ |
3f4fda20 | 1214 | pr_Initialize( 0, AFSDIR_CLIENT_ETC_DIR, cell ); |
c760f0a1 | 1215 | |
1216 | log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: still here"); | |
1217 | ||
3f4fda20 | 1218 | while(1) { |
1219 | ||
1220 | for ( i = 0; i < renewcount; ++i ) { | |
1221 | renewtable[i].lastrenewed = time(0); | |
1222 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: (pid %d) renewing %s / %s", getpid(), renewtable[i].principal, | |
1223 | renewtable[i].keytab); | |
1224 | ||
1225 | set_auth( s, NULL, 0, renewtable[i].principal, renewtable[i].keytab, 1 ); | |
1226 | ||
1227 | /* if this is our default token, we want to "stash" it in our current PAG so the parent maintains readability of | |
1228 | things that it needs to read */ | |
1229 | ||
1230 | if ( cfg && cfg->default_principal && ( ! strcmp(cfg->default_principal, renewtable[i].principal ) ) ) { | |
1231 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: renewing/setting default tokens" ); | |
1232 | set_auth( s, NULL, 0, renewtable[i].principal, renewtable[i].keytab, 0 ); | |
1233 | } | |
1234 | ||
4e1ae1cd | 1235 | } |
1236 | ||
3f4fda20 | 1237 | sharedspace->renewcount++; |
1238 | ||
1239 | left = sleep_time; | |
1240 | ||
1241 | while( left > 5 ) { | |
1242 | when = time(0); | |
1243 | ||
1244 | sleep(left); | |
1245 | ||
1246 | left -= ( time(0) - when ); | |
4e1ae1cd | 1247 | } |
3f4fda20 | 1248 | |
1249 | } | |
4e1ae1cd | 1250 | |
3f4fda20 | 1251 | pr_End(); |
403921ef | 1252 | |
3f4fda20 | 1253 | } |
4e1ae1cd | 1254 | |
c9d59a9c | 1255 | #ifdef APACHE2 |
3f4fda20 | 1256 | static int |
1257 | waklog_init_handler (apr_pool_t * p, apr_pool_t * plog, | |
42d78dfb | 1258 | apr_pool_t * ptemp, server_rec * s) |
3f4fda20 | 1259 | { |
1260 | int rv; | |
1261 | extern char *version; | |
1262 | apr_proc_t *proc; | |
1263 | waklog_config *cfg; | |
1264 | void *data; | |
1265 | int fd = -1; | |
1266 | int use_existing = 1; | |
1267 | int oldrenewcount; | |
1268 | char cache_file[MAXNAMELEN]; | |
1269 | #ifdef use_pthreads | |
1270 | pthread_rwlockattr_t rwlock_attr; | |
1271 | #endif | |
4e1ae1cd | 1272 | |
1273 | ||
3f4fda20 | 1274 | getModConfig (cfg, s); |
4e1ae1cd | 1275 | |
3f4fda20 | 1276 | /* initialize_module() will be called twice, and if it's a DSO |
1277 | * then all static data from the first call will be lost. Only | |
1278 | * set up our static data on the second call. | |
1279 | * see http://issues.apache.org/bugzilla/show_bug.cgi?id=37519 */ | |
1280 | apr_pool_userdata_get (&data, userdata_key, s->process->pool); | |
7193eb01 | 1281 | |
891fb458 | 1282 | |
1283 | if (cfg->afs_cell==NULL) { | |
1284 | log_error (APLOG_MARK, APLOG_ERR, 0, s, | |
21a7788b | 1285 | "mod_waklog: afs_cell==NULL; please provide the WaklogAFSCell directive"); |
891fb458 | 1286 | /** clobber apache */ |
1287 | exit(-1); | |
1288 | } | |
1289 | ||
3f4fda20 | 1290 | if (!data) |
1291 | { | |
1292 | apr_pool_userdata_set ((const void *) 1, userdata_key, | |
42d78dfb | 1293 | apr_pool_cleanup_null, s->process->pool); |
4e1ae1cd | 1294 | } |
3f4fda20 | 1295 | else |
1296 | { | |
1297 | log_error (APLOG_MARK, APLOG_INFO, 0, s, | |
891fb458 | 1298 | "mod_waklog: version %s initialized for cell %s", version, cfg->afs_cell); |
3f4fda20 | 1299 | |
1300 | if ( sharedspace ) { | |
1301 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: shared memory already allocated." ); | |
1302 | } else { | |
1303 | ||
1304 | snprintf( cache_file, MAXNAMELEN, "/tmp/waklog_cache.%d", getpid() ); | |
1305 | ||
1306 | if ( ( fd = open( cache_file, O_RDWR, 0600 ) ) == -1 ) { | |
1307 | ||
1308 | if ( errno == ENOENT ) { | |
1309 | ||
1310 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: creating shared token cache file %s", cache_file ); | |
1311 | use_existing = 0; | |
1312 | if ( ( fd = open( cache_file, O_RDWR|O_CREAT|O_TRUNC, 0600 ) ) == -1 ) { | |
1313 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: cannot create shared token cache file %s (%d)", cache_file, errno ); | |
1314 | exit(errno); | |
1315 | } | |
1316 | } else { | |
1317 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: cannot open existing shared token cache file %s (%d)", cache_file, errno ); | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | if ( use_existing == 0 ) { | |
1322 | struct sharedspace_s bob; | |
1323 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: sizing our cache file %d to %d", fd, sizeof(struct sharedspace_s) ); | |
1324 | memset( &bob, 0, sizeof(struct sharedspace_s)); | |
1325 | write(fd, &bob, sizeof(struct sharedspace_s)); | |
1326 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: done sizing our cache file to %d", sizeof(struct sharedspace_s) ); | |
1327 | } | |
1328 | ||
1329 | /* mmap the region */ | |
1330 | ||
1331 | if ( ( sharedspace = (struct sharedspace_s *) mmap ( NULL, sizeof(struct sharedspace_s), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0 ) ) != MAP_FAILED ) { | |
4cd4a5af | 1332 | int err = 0; |
3f4fda20 | 1333 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: shared mmap region ok %d", sharedspace ); |
4cd4a5af | 1334 | err = unlink(cache_file); |
1335 | if (err) { | |
1336 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: unable to delete %s due to %d", cache_file, errno); | |
1337 | } else { | |
95ad25b8 | 1338 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: shared cache unlinked (will be deleted when Apache quits)"); |
4cd4a5af | 1339 | } |
3f4fda20 | 1340 | } else { |
1341 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: mmap failed %d", errno ); | |
1342 | exit(errno); | |
1343 | } | |
1344 | } | |
4e1ae1cd | 1345 | |
3f4fda20 | 1346 | #ifdef use_pthreads |
1347 | #define locktype pthread_rwlock_t | |
1348 | #else | |
1349 | #define locktype rwlock_t | |
1350 | #endif | |
4e1ae1cd | 1351 | |
3f4fda20 | 1352 | if ( sharedlock = ( locktype * ) mmap ( NULL, sizeof(locktype), PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANON, -1, 0 ) ) { |
1353 | #ifndef use_pthreads | |
1354 | rwlock_init(sharedlock, USYNC_PROCESS, NULL ); | |
1355 | #else | |
1356 | pthread_rwlockattr_init(&rwlock_attr); | |
1357 | pthread_rwlockattr_setpshared(&rwlock_attr, PTHREAD_PROCESS_SHARED); | |
1358 | pthread_rwlock_init(sharedlock, &rwlock_attr ); | |
1359 | #endif | |
1360 | } else { | |
1361 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: rwlock mmap failed %d", errno ); | |
1362 | } | |
58bbdc54 | 1363 | |
3f4fda20 | 1364 | #undef locktype |
7193eb01 | 1365 | |
3f4fda20 | 1366 | /* set our default tokens */ |
403921ef | 1367 | |
3f4fda20 | 1368 | oldrenewcount = sharedspace->renewcount; |
7193eb01 | 1369 | |
3f4fda20 | 1370 | pag_for_children = 0; |
7193eb01 | 1371 | |
3f4fda20 | 1372 | proc = (apr_proc_t *) ap_pcalloc (s->process->pool, sizeof (apr_proc_t)); |
7193eb01 | 1373 | |
3f4fda20 | 1374 | rv = apr_proc_fork (proc, s->process->pool); |
7193eb01 | 1375 | |
3f4fda20 | 1376 | if (rv == APR_INCHILD) |
42d78dfb | 1377 | { |
1378 | waklog_child_routine (s, NULL); | |
1379 | } | |
3f4fda20 | 1380 | else |
42d78dfb | 1381 | { |
1382 | apr_pool_note_subprocess (s->process->pool, proc, APR_KILL_ALWAYS); | |
1383 | } | |
3f4fda20 | 1384 | /* parent and child */ |
1385 | cfg->forked = proc->pid; | |
1386 | pag_for_children = 1; | |
1387 | ||
1388 | if ( use_existing == 0 ) { | |
1389 | /* wait here until our child process has gone and done it's renewing thing. */ | |
1390 | while( sharedspace->renewcount == oldrenewcount ) { | |
1391 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: waiting for tokens..." ); | |
1392 | sleep(2); | |
1393 | } | |
1394 | } | |
1395 | ||
1396 | if ( cfg->default_principal ) { | |
1397 | set_auth( s, NULL, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1398 | } | |
1399 | } | |
1400 | return 0; | |
1401 | } | |
ebb1f61c | 1402 | #else |
3f4fda20 | 1403 | static void |
1404 | waklog_init (server_rec * s, MK_POOL * p) | |
1405 | { | |
1406 | extern char *version; | |
1407 | int pid; | |
1408 | waklog_config *cfg; | |
3f4fda20 | 1409 | int fd = -1; |
1410 | int use_existing = 1; | |
1411 | int oldrenewcount; | |
1412 | char cache_file[MAXNAMELEN]; | |
1413 | #ifdef use_pthreads | |
1414 | pthread_rwlockattr_t rwlock_attr; | |
ebb1f61c | 1415 | #endif |
7193eb01 | 1416 | |
3f4fda20 | 1417 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, |
42d78dfb | 1418 | "mod_waklog: version %s initialized.", version); |
7193eb01 | 1419 | |
3f4fda20 | 1420 | if ( sharedspace ) { |
1421 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: shared memory already allocated." ); | |
1422 | } else { | |
1423 | ||
1424 | snprintf( cache_file, MAXNAMELEN, "/tmp/waklog_cache.%d", getpid() ); | |
1425 | ||
1426 | if ( ( fd = open( cache_file, O_RDWR, 0600 ) ) == -1 ) { | |
1427 | ||
1428 | if ( errno == ENOENT ) { | |
1429 | ||
1430 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: creating shared token cache file %s", cache_file ); | |
1431 | use_existing = 0; | |
1432 | if ( ( fd = open( cache_file, O_RDWR|O_CREAT|O_TRUNC, 0600 ) ) == -1 ) { | |
1433 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: cannot create shared token cache file %s (%d)", cache_file, errno ); | |
1434 | exit(errno); | |
1435 | } | |
1436 | } else { | |
1437 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: cannot open existing shared token cache file %s (%d)", cache_file, errno ); | |
1438 | } | |
1439 | ||
1440 | } | |
1441 | ||
1442 | if ( use_existing == 0 ) { | |
1443 | struct sharedspace_s bob; | |
1444 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: sizing our cache file %d to %d", fd, sizeof(struct sharedspace_s) ); | |
1445 | memset( &bob, 0, sizeof(struct sharedspace_s)); | |
1446 | write(fd, &bob, sizeof(struct sharedspace_s)); | |
1447 | log_error(APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: done sizing our cache file to %d", sizeof(struct sharedspace_s) ); | |
1448 | } | |
4e1ae1cd | 1449 | |
3f4fda20 | 1450 | /* mmap the region */ |
1451 | ||
c760f0a1 | 1452 | if ( ( sharedspace = (struct sharedspace_s *) mmap ( NULL, sizeof(struct sharedspace_s), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0 ) ) != (void *) -1 ) { |
3f4fda20 | 1453 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: shared mmap region ok %d", sharedspace ); |
1454 | close(fd); | |
1455 | } else { | |
1456 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: mmap failed %d", errno ); | |
1457 | exit(errno); | |
1458 | } | |
1459 | } | |
e21f34f0 | 1460 | |
3f4fda20 | 1461 | #ifdef use_pthreads |
1462 | #define locktype pthread_rwlock_t | |
1463 | #else | |
1464 | #define locktype rwlock_t | |
ea3e8708 | 1465 | #endif |
e21f34f0 | 1466 | |
3f4fda20 | 1467 | /* mmap our shared space for our lock */ |
c760f0a1 | 1468 | if ( ( sharedlock = ( locktype * ) mmap ( NULL, sizeof(locktype), PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANON, -1, 0 ) ) ) { |
3f4fda20 | 1469 | #ifndef use_pthreads |
1470 | rwlock_init(sharedlock, USYNC_PROCESS, NULL ); | |
1471 | #else | |
1472 | pthread_rwlockattr_init(&rwlock_attr); | |
1473 | pthread_rwlockattr_setpshared(&rwlock_attr, PTHREAD_PROCESS_SHARED); | |
1474 | pthread_rwlock_init(sharedlock, &rwlock_attr ); | |
1475 | #endif | |
1476 | } else { | |
1477 | log_error( APLOG_MARK, APLOG_DEBUG, 0, s, "mod_waklog: rwlock mmap failed %d", errno ); | |
1478 | } | |
e21f34f0 | 1479 | |
3f4fda20 | 1480 | #undef locktype |
e21f34f0 | 1481 | |
3f4fda20 | 1482 | /* set our default tokens */ |
1483 | ||
1484 | getModConfig (cfg, s); | |
42d78dfb | 1485 | |
1486 | oldrenewcount = sharedspace->renewcount; | |
1487 | ||
1488 | pag_for_children = 0; | |
1489 | ||
1490 | pid = ap_bspawn_child (p, waklog_child_routine, s, kill_always, | |
1491 | NULL, NULL, NULL); | |
1492 | ||
1493 | pag_for_children = 1; | |
1494 | ||
3f4fda20 | 1495 | log_error (APLOG_MARK, APLOG_DEBUG, 0, s, |
42d78dfb | 1496 | "mod_waklog: ap_bspawn_child: %d.", pid); |
3f4fda20 | 1497 | |
1498 | if ( use_existing == 0 ) { | |
1499 | /* wait here until our child process has gone and done it's renewing thing. */ | |
1500 | while( sharedspace->renewcount == oldrenewcount ) { | |
1501 | log_error( APLOG_MARK, APLOG_ERR, 0, s, "mod_waklog: waiting for tokens..." ); | |
1502 | sleep(2); | |
87822447 | 1503 | } |
3f4fda20 | 1504 | } |
1505 | ||
1506 | if ( cfg->default_principal ) { | |
1507 | set_auth( s, NULL, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1508 | } | |
1509 | ||
87822447 | 1510 | } |
3f4fda20 | 1511 | #endif |
1512 | ||
1513 | static int | |
1514 | waklog_phase0 (request_rec * r) | |
e21f34f0 | 1515 | { |
3f4fda20 | 1516 | waklog_config *cfg; |
e21f34f0 | 1517 | |
3f4fda20 | 1518 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1519 | "mod_waklog: phase0 called"); |
3f4fda20 | 1520 | |
1521 | cfg = retrieve_config(r); | |
e21f34f0 | 1522 | |
4480093f | 1523 | if ( get_cfg_protect(cfg) && cfg->principal ) { |
3f4fda20 | 1524 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase0 using user %s", cfg->principal); |
1525 | set_auth(r->server, r, 0, cfg->principal, cfg->keytab, 0); | |
1526 | } else if ( cfg->default_principal ) { | |
1527 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase0 using default user %s", cfg->default_principal); | |
1528 | set_auth(r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1529 | } else { | |
c760f0a1 | 1530 | |
1531 | if (child.token.ticketLen) { | |
1532 | memset( &child.token, 0, sizeof (struct ktc_token) ); | |
1533 | ktc_ForgetAllTokens(); | |
1534 | } | |
1535 | ||
3f4fda20 | 1536 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase0 not doing nothin."); |
1537 | } | |
e21f34f0 | 1538 | |
3f4fda20 | 1539 | return DECLINED; |
e21f34f0 | 1540 | } |
4e1ae1cd | 1541 | |
3f4fda20 | 1542 | static int |
1543 | waklog_phase1 (request_rec * r) | |
bed98ff9 | 1544 | { |
3f4fda20 | 1545 | waklog_config *cfg; |
313dde40 | 1546 | |
3f4fda20 | 1547 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1548 | "mod_waklog: phase1 called"); |
7193eb01 | 1549 | |
3f4fda20 | 1550 | cfg = retrieve_config(r); |
313dde40 | 1551 | |
4480093f | 1552 | if ( get_cfg_protect(cfg) && cfg->principal ) { |
3f4fda20 | 1553 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase1 using user %s", cfg->principal); |
1554 | set_auth(r->server, r, 0, cfg->principal, cfg->keytab, 0); | |
1555 | } else if ( cfg->default_principal ) { | |
1556 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase1 using default user %s", cfg->default_principal); | |
1557 | set_auth(r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1558 | } else { | |
1559 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase1 not doing nothin."); | |
1560 | } | |
4e1ae1cd | 1561 | |
3f4fda20 | 1562 | return DECLINED; |
7193eb01 | 1563 | } |
4e1ae1cd | 1564 | |
3f4fda20 | 1565 | static int |
1566 | waklog_phase3 (request_rec * r) | |
7193eb01 | 1567 | { |
3f4fda20 | 1568 | waklog_config *cfg; |
1e18ef7d | 1569 | |
3f4fda20 | 1570 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1571 | "mod_waklog: phase 3 called"); |
1e18ef7d | 1572 | |
3f4fda20 | 1573 | cfg = retrieve_config(r); |
1574 | ||
4480093f | 1575 | if ( get_cfg_protect(cfg) && cfg->principal ) { |
3f4fda20 | 1576 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase3 using user %s", cfg->principal); |
1577 | set_auth(r->server, r, 0, cfg->principal, cfg->keytab, 0); | |
1578 | } else if ( cfg->default_principal ) { | |
1579 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase3 using default user %s", cfg->default_principal); | |
1580 | set_auth(r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1581 | } else { | |
1582 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase3 not doing nothin."); | |
1583 | } | |
1584 | ||
1585 | return DECLINED; | |
1586 | } | |
bed98ff9 | 1587 | |
3f4fda20 | 1588 | static int |
1589 | waklog_phase6 (request_rec * r) | |
1590 | { | |
1591 | waklog_config *cfg; | |
1592 | ||
1593 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, | |
42d78dfb | 1594 | "mod_waklog: phase6 called"); |
3f4fda20 | 1595 | |
1596 | cfg = retrieve_config(r); | |
1597 | ||
4480093f | 1598 | if ( get_cfg_protect(cfg) && cfg->principal ) { |
3f4fda20 | 1599 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase6 using user %s", cfg->principal); |
1600 | set_auth(r->server, r, 0, cfg->principal, cfg->keytab, 0); | |
1601 | } else if ( cfg->default_principal ) { | |
1602 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase6 using default user %s", cfg->default_principal); | |
1603 | set_auth(r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1604 | } else { | |
1605 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase6 not doing nothin."); | |
1606 | } | |
1607 | ||
1608 | return DECLINED; | |
1609 | } | |
bed98ff9 | 1610 | |
3f4fda20 | 1611 | static int |
1612 | waklog_phase7 (request_rec * r) | |
1613 | { | |
1614 | waklog_config *cfg; | |
1615 | int rc = 0; | |
1616 | ||
1617 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, | |
42d78dfb | 1618 | "mod_waklog: phase7 called"); |
3f4fda20 | 1619 | |
1620 | cfg = retrieve_config (r); | |
1621 | ||
4480093f | 1622 | if ( get_cfg_protect(cfg) && get_cfg_usertokens(cfg) ) { |
3f4fda20 | 1623 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase7 using usertokens"); |
1624 | rc = set_auth( r->server, r, 1, NULL, NULL, 0); | |
4480093f | 1625 | } else if ( get_cfg_protect(cfg) && cfg->principal ) { |
3f4fda20 | 1626 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase7 using user %s", cfg->principal); |
1627 | rc = set_auth( r->server, r, 0, cfg->principal, cfg->keytab, 0); | |
1628 | } else if ( cfg->default_principal ) { | |
1629 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase7 using default user %s", cfg->default_principal); | |
1630 | rc = set_auth( r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
d3bea354 | 1631 | } else { |
c760f0a1 | 1632 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: no tokens"); |
1633 | if (child.token.ticketLen) { | |
1634 | memset(&child.token, 0, sizeof(struct ktc_token)); | |
1635 | ktc_ForgetAllTokens(); | |
1636 | } | |
3f4fda20 | 1637 | } |
1638 | ||
1639 | if ( rc ) { | |
1640 | return 400; | |
1641 | } | |
1642 | ||
1643 | return DECLINED; | |
1644 | } | |
87822447 | 1645 | |
3f4fda20 | 1646 | static int |
1647 | waklog_phase9 (request_rec * r) | |
1648 | { | |
1649 | waklog_config *cfg; | |
bed98ff9 | 1650 | |
3f4fda20 | 1651 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1652 | "mod_waklog: phase9 called"); |
bed98ff9 | 1653 | |
3f4fda20 | 1654 | getModConfig (cfg, r->server); |
1655 | ||
1656 | if ( cfg->default_principal ) { | |
1657 | log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "mod_waklog: phase9 using default user %s", cfg->default_principal); | |
1658 | set_auth( r->server, r, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1659 | } | |
1660 | ||
1661 | return DECLINED; | |
bed98ff9 | 1662 | } |
1663 | ||
ff47641b | 1664 | |
87822447 | 1665 | static |
c9d59a9c | 1666 | #ifdef APACHE2 |
ff47641b | 1667 | int |
87822447 | 1668 | #else |
ff47641b | 1669 | void |
87822447 | 1670 | #endif |
ff47641b | 1671 | waklog_new_connection (conn_rec * c |
c9d59a9c | 1672 | #ifdef APACHE2 |
42d78dfb | 1673 | , void *dummy |
87822447 | 1674 | #endif |
ff47641b | 1675 | ) |
1676 | { | |
1677 | ||
3f4fda20 | 1678 | waklog_config *cfg; |
ff47641b | 1679 | |
1680 | log_error (APLOG_MARK, APLOG_DEBUG, 0, c->base_server, | |
42d78dfb | 1681 | "mod_waklog: new_connection called: pid: %d", getpid ()); |
1682 | ||
1683 | getModConfig(cfg, c->base_server); | |
1684 | ||
1685 | if ( cfg->default_principal ) { | |
1686 | log_error(APLOG_MARK, APLOG_DEBUG, 0, c->base_server, "mod_waklog: new conn setting default user %s", | |
1687 | cfg->default_principal); | |
1688 | set_auth( c->base_server, NULL, 0, cfg->default_principal, cfg->default_keytab, 0); | |
1689 | } | |
1690 | ||
1691 | ||
3f4fda20 | 1692 | return |
c9d59a9c | 1693 | #ifdef APACHE2 |
3f4fda20 | 1694 | 0 |
87822447 | 1695 | #endif |
3f4fda20 | 1696 | ; |
7193eb01 | 1697 | } |
bed98ff9 | 1698 | |
c4ad0387 | 1699 | |
1196adfe | 1700 | /* |
1701 | ** Here's a quick explaination for phase0 and phase2: | |
1702 | ** Apache does a stat() on the path between phase0 and | |
1703 | ** phase2, and must by ACLed rl to succeed. So, at | |
1704 | ** phase0 we acquire credentials for umweb:servers from | |
1705 | ** a keytab, and at phase2 we must ensure we remove them. | |
1706 | ** | |
1707 | ** Failure to "unlog" would be a security risk. | |
1708 | */ | |
ff47641b | 1709 | static int |
1710 | waklog_phase2 (request_rec * r) | |
c4ad0387 | 1711 | { |
161ffd84 | 1712 | |
ff47641b | 1713 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1714 | "mod_waklog: phase2 called"); |
1196adfe | 1715 | |
ff47641b | 1716 | if (child.token.ticketLen) |
1717 | { | |
1718 | memset (&child.token, 0, sizeof (struct ktc_token)); | |
c4ad0387 | 1719 | |
ff47641b | 1720 | ktc_ForgetAllTokens (); |
c4ad0387 | 1721 | |
ff47641b | 1722 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1723 | "mod_waklog: ktc_ForgetAllTokens succeeded: pid: %d", |
1724 | getpid ()); | |
c4ad0387 | 1725 | } |
1196adfe | 1726 | |
ff47641b | 1727 | log_error (APLOG_MARK, APLOG_DEBUG, 0, r->server, |
42d78dfb | 1728 | "mod_waklog: phase2 returning"); |
1196adfe | 1729 | |
3f4fda20 | 1730 | return DECLINED; |
c4ad0387 | 1731 | } |
1732 | ||
c9d59a9c | 1733 | #ifndef APACHE2 |
313dde40 | 1734 | module MODULE_VAR_EXPORT waklog_module = { |
3f4fda20 | 1735 | STANDARD_MODULE_STUFF, |
866ccfbd | 1736 | waklog_init, /* module initializer */ |
42d78dfb | 1737 | waklog_create_dir_config, /* create per-dir config structures */ |
866ccfbd | 1738 | waklog_merge_dir_config, /* merge per-dir config structures */ |
1739 | waklog_create_server_config, /* create per-server config structures */ | |
1740 | waklog_merge_dir_config, /* merge per-server config structures */ | |
1741 | waklog_cmds, /* table of config file commands */ | |
1742 | NULL, /* [#8] MIME-typed-dispatched handlers */ | |
1743 | waklog_phase1, /* [#1] URI to filename translation */ | |
1744 | NULL, /* [#4] validate user id from request */ | |
1745 | NULL, /* [#5] check if the user is ok _here_ */ | |
1746 | waklog_phase3, /* [#3] check access by host address */ | |
1747 | waklog_phase6, /* [#6] determine MIME type */ | |
1748 | waklog_phase7, /* [#7] pre-run fixups */ | |
1749 | waklog_phase9, /* [#9] log a transaction */ | |
c760f0a1 | 1750 | waklog_phase2, /* [#2] header parser */ |
866ccfbd | 1751 | waklog_child_init, /* child_init */ |
1752 | waklog_child_exit, /* child_exit */ | |
1753 | waklog_phase0 /* [#0] post read-request */ | |
bed98ff9 | 1754 | #ifdef EAPI |
866ccfbd | 1755 | , NULL, /* EAPI: add_module */ |
1756 | NULL, /* EAPI: remove_module */ | |
1757 | NULL, /* EAPI: rewrite_command */ | |
1758 | waklog_new_connection /* EAPI: new_connection */ | |
bed98ff9 | 1759 | #endif |
1760 | }; | |
87822447 | 1761 | #else |
1762 | static void | |
ff47641b | 1763 | waklog_register_hooks (apr_pool_t * p) |
87822447 | 1764 | { |
3f4fda20 | 1765 | ap_hook_translate_name (waklog_phase1, NULL, NULL, APR_HOOK_FIRST); |
ff47641b | 1766 | ap_hook_header_parser (waklog_phase2, NULL, NULL, APR_HOOK_FIRST); |
3f4fda20 | 1767 | ap_hook_access_checker (waklog_phase3, NULL, NULL, APR_HOOK_FIRST); |
1768 | ap_hook_type_checker (waklog_phase6, NULL, NULL, APR_HOOK_FIRST); | |
ff47641b | 1769 | ap_hook_fixups (waklog_phase7, NULL, NULL, APR_HOOK_FIRST); |
3f4fda20 | 1770 | ap_hook_log_transaction (waklog_phase9, NULL, NULL, APR_HOOK_FIRST); |
ff47641b | 1771 | ap_hook_child_init (waklog_child_init, NULL, NULL, APR_HOOK_FIRST); |
1772 | ap_hook_post_read_request (waklog_phase0, NULL, NULL, APR_HOOK_FIRST); | |
1773 | ap_hook_pre_connection (waklog_new_connection, NULL, NULL, APR_HOOK_FIRST); | |
1774 | ap_hook_post_config (waklog_init_handler, NULL, NULL, APR_HOOK_MIDDLE); | |
87822447 | 1775 | } |
1776 | ||
1777 | ||
3f4fda20 | 1778 | module AP_MODULE_DECLARE_DATA waklog_module = { |
1779 | STANDARD20_MODULE_STUFF, | |
42d78dfb | 1780 | waklog_create_dir_config, /* create per-dir conf structures */ |
1781 | waklog_merge_dir_config, /* merge per-dir conf structures */ | |
1782 | waklog_create_server_config, /* create per-server conf structures */ | |
1783 | waklog_merge_dir_config, /* merge per-server conf structures */ | |
1784 | waklog_cmds, /* table of configuration directives */ | |
1785 | waklog_register_hooks /* register hooks */ | |
87822447 | 1786 | }; |
1787 | #endif |