6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * Copyright 2001 The FreeRADIUS server project
21 * Copyright 2001 Alan DeKok <aland@ox.org>
22 * Copyright 2001-3 Kostas Kalevras <kkalev@noc.ntua.gr>
27 #include "libradius.h"
41 #ifdef NEEDS_GDBM_SYNC
42 # define GDBM_SYNCOPT GDBM_SYNC
44 # define GDBM_SYNCOPT 0
48 #define GDBM_COUNTER_OPTS (GDBM_SYNCOPT | GDBM_NOLOCK)
50 #define GDBM_COUNTER_OPTS (GDBM_SYNCOPT)
53 #ifndef HAVE_GDBM_FDESC
54 #define gdbm_fdesc(foo) (-1)
57 #define UNIQUEID_MAX_LEN 32
59 static const char rcsid[] = "$Id$";
62 * Define a structure for our module configuration.
64 * These variables do not need to be in a structure, but it's
65 * a lot cleaner to do so, and a pointer to the structure can
66 * be used as the instance handle.
68 typedef struct rlm_counter_t {
69 char *filename; /* name of the database file */
70 char *reset; /* daily, weekly, monthly, never or user defined */
71 char *key_name; /* User-Name */
72 char *count_attribute; /* Acct-Session-Time */
73 char *counter_name; /* Daily-Session-Time */
74 char *check_name; /* Daily-Max-Session */
75 char *service_type; /* Service-Type to search for */
81 time_t reset_time; /* The time of the next reset. */
82 time_t last_reset; /* The time of the last reset. */
83 int dict_attr; /* attribute number for the counter. */
84 GDBM_FILE gdbm; /* The gdbm file handle */
86 pthread_mutex_t mutex; /* A mutex to lock the gdbm file for only one reader/writer */
90 #ifndef HAVE_PTHREAD_H
92 * This is a lot simpler than putting ifdef's around
93 * every use of the pthread functions.
95 #define pthread_mutex_lock(a)
96 #define pthread_mutex_unlock(a)
97 #define pthread_mutex_init(a,b)
98 #define pthread_mutex_destroy(a)
101 typedef struct rad_counter {
102 unsigned int user_counter;
103 char uniqueid[UNIQUEID_MAX_LEN];
107 * A mapping of configuration file names to internal variables.
109 * Note that the string is dynamically allocated, so it MUST
110 * be freed. When the configuration file parse re-reads the string,
111 * it free's the old one, and strdup's the new one, placing the pointer
112 * to the strdup'd string into 'config.string'. This gets around
115 static CONF_PARSER module_config[] = {
116 { "filename", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,filename), NULL, NULL },
117 { "key", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,key_name), NULL, NULL },
118 { "reset", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,reset), NULL, NULL },
119 { "count-attribute", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,count_attribute), NULL, NULL },
120 { "counter-name", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,counter_name), NULL, NULL },
121 { "check-name", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,check_name), NULL, NULL },
122 { "allowed-servicetype", PW_TYPE_STRING_PTR, offsetof(rlm_counter_t,service_type),NULL, NULL },
123 { "cache-size", PW_TYPE_INTEGER, offsetof(rlm_counter_t,cache_size), NULL, "1000" },
124 { NULL, -1, 0, NULL, NULL }
127 static int counter_detach(void *instance);
131 * See if the counter matches.
133 static int counter_cmp(void *instance,
135 VALUE_PAIR *request, VALUE_PAIR *check,
136 VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
138 rlm_counter_t *data = (rlm_counter_t *) instance;
144 check_pairs = check_pairs; /* shut the compiler up */
145 reply_pairs = reply_pairs;
149 * Find the key attribute.
151 key_vp = pairfind(request, data->key_attr);
152 if (key_vp == NULL) {
153 return RLM_MODULE_NOOP;
156 key_datum.dptr = key_vp->strvalue;
157 key_datum.dsize = key_vp->length;
159 count_datum = gdbm_fetch(data->gdbm, key_datum);
161 if (count_datum.dptr == NULL) {
164 memcpy(&counter, count_datum.dptr, sizeof(rad_counter));
165 free(count_datum.dptr);
167 return counter.user_counter - check->lvalue;
171 static int add_defaults(rlm_counter_t *data)
175 const char *default1 = "DEFAULT1";
176 const char *default2 = "DEFAULT2";
178 DEBUG2("rlm_counter: add_defaults: Start");
180 key_datum.dptr = (char *) default1;
181 key_datum.dsize = strlen(default1);
182 time_datum.dptr = (char *) &data->reset_time;
183 time_datum.dsize = sizeof(time_t);
185 if (gdbm_store(data->gdbm, key_datum, time_datum, GDBM_REPLACE) < 0){
186 radlog(L_ERR, "rlm_counter: Failed storing data to %s: %s",
187 data->filename, gdbm_strerror(gdbm_errno));
188 return RLM_MODULE_FAIL;
190 DEBUG2("rlm_counter: DEFAULT1 set to %d",(int)data->reset_time);
192 key_datum.dptr = (char *) default2;
193 key_datum.dsize = strlen(default2);
194 time_datum.dptr = (char *) &data->last_reset;
195 time_datum.dsize = sizeof(time_t);
197 if (gdbm_store(data->gdbm, key_datum, time_datum, GDBM_REPLACE) < 0){
198 radlog(L_ERR, "rlm_counter: Failed storing data to %s: %s",
199 data->filename, gdbm_strerror(gdbm_errno));
200 return RLM_MODULE_FAIL;
202 DEBUG2("rlm_counter: DEFAULT2 set to %d",(int)data->last_reset);
203 DEBUG2("rlm_counter: add_defaults: End");
205 return RLM_MODULE_OK;
208 static int reset_db(rlm_counter_t *data)
210 int cache_size = data->cache_size;
213 DEBUG2("rlm_counter: reset_db: Closing database");
214 gdbm_close(data->gdbm);
217 * Open a completely new database.
219 data->gdbm = gdbm_open(data->filename, sizeof(int),
220 GDBM_NEWDB | GDBM_COUNTER_OPTS, 0600, NULL);
221 if (data->gdbm == NULL) {
222 radlog(L_ERR, "rlm_counter: Failed to open file %s: %s",
223 data->filename, strerror(errno));
224 return RLM_MODULE_FAIL;
226 if (gdbm_setopt(data->gdbm, GDBM_CACHESIZE, &cache_size, sizeof(int)) == -1)
227 radlog(L_ERR, "rlm_counter: Failed to set cache size");
228 DEBUG2("rlm_counter: reset_db: Opened new database");
233 ret = add_defaults(data);
234 if (ret != RLM_MODULE_OK)
237 DEBUG2("rlm_counter: reset_db ended");
239 return RLM_MODULE_OK;
242 static int find_next_reset(rlm_counter_t *data, time_t timeval)
248 char sCurrentTime[40], sNextTime[40];
250 tm = localtime_r(&timeval, &s_tm);
251 strftime(sCurrentTime, sizeof(sCurrentTime),"%Y-%m-%d %H:%M:%S",tm);
252 tm->tm_sec = tm->tm_min = 0;
254 if (data->reset == NULL)
256 if (isdigit((int) data->reset[0])){
259 len = strlen(data->reset);
262 last = data->reset[len - 1];
263 if (!isalpha((int) last))
265 num = atoi(data->reset);
266 DEBUG("rlm_counter: num=%d, last=%c",num,last);
268 if (strcmp(data->reset, "hourly") == 0 || last == 'h') {
270 * Round up to the next nearest hour.
273 data->reset_time = mktime(tm);
274 } else if (strcmp(data->reset, "daily") == 0 || last == 'd') {
276 * Round up to the next nearest day.
280 data->reset_time = mktime(tm);
281 } else if (strcmp(data->reset, "weekly") == 0 || last == 'w') {
283 * Round up to the next nearest week.
286 tm->tm_mday += (7 - tm->tm_wday) +(7*(num-1));
287 data->reset_time = mktime(tm);
288 } else if (strcmp(data->reset, "monthly") == 0 || last == 'm') {
292 data->reset_time = mktime(tm);
293 } else if (strcmp(data->reset, "never") == 0) {
294 data->reset_time = 0;
296 radlog(L_ERR, "rlm_counter: Unknown reset timer \"%s\"",
300 strftime(sNextTime, sizeof(sNextTime),"%Y-%m-%d %H:%M:%S",tm);
301 DEBUG2("rlm_counter: Current Time: %d [%s], Next reset %d [%s]",
302 (int)timeval,sCurrentTime,(int)data->reset_time,sNextTime);
309 * Do any per-module initialization that is separate to each
310 * configured instance of the module. e.g. set up connections
311 * to external databases, read configuration files, set up
312 * dictionary entries, etc.
314 * If configuration information is given in the config section
315 * that must be referenced in later calls, store a handle to it
316 * in *instance otherwise put a null pointer there.
318 static int counter_instantiate(CONF_SECTION *conf, void **instance)
329 const char *default1 = "DEFAULT1";
330 const char *default2 = "DEFAULT2";
333 * Set up a storage area for instance data
335 data = rad_malloc(sizeof(*data));
337 radlog(L_ERR, "rlm_counter: rad_malloc() failed.");
340 memset(data, 0, sizeof(*data));
343 * If the configuration parameters can't be parsed, then
346 if (cf_section_parse(conf, data, module_config) < 0) {
350 cache_size = data->cache_size;
353 * Discover the attribute number of the key.
355 if (data->key_name == NULL) {
356 radlog(L_ERR, "rlm_counter: 'key' must be set.");
357 counter_detach(data);
360 dattr = dict_attrbyname(data->key_name);
362 radlog(L_ERR, "rlm_counter: No such attribute %s",
364 counter_detach(data);
367 data->key_attr = dattr->attr;
370 * Discover the attribute number of the counter.
372 if (data->count_attribute == NULL) {
373 radlog(L_ERR, "rlm_counter: 'count-attribute' must be set.");
374 counter_detach(data);
377 dattr = dict_attrbyname(data->count_attribute);
379 radlog(L_ERR, "rlm_counter: No such attribute %s",
380 data->count_attribute);
381 counter_detach(data);
384 data->count_attr = dattr->attr;
387 * Create a new attribute for the counter.
389 if (data->counter_name == NULL) {
390 radlog(L_ERR, "rlm_counter: 'counter-name' must be set.");
391 counter_detach(data);
395 memset(&flags, 0, sizeof(flags));
396 dict_addattr(data->counter_name, 0, PW_TYPE_INTEGER, -1, flags);
397 dattr = dict_attrbyname(data->counter_name);
399 radlog(L_ERR, "rlm_counter: Failed to create counter attribute %s",
401 counter_detach(data);
404 data->dict_attr = dattr->attr;
405 DEBUG2("rlm_counter: Counter attribute %s is number %d",
406 data->counter_name, data->dict_attr);
409 * Create a new attribute for the check item.
411 if (data->check_name == NULL) {
412 radlog(L_ERR, "rlm_counter: 'check-name' must be set.");
413 counter_detach(data);
416 dict_addattr(data->check_name, 0, PW_TYPE_INTEGER, -1, flags);
417 dattr = dict_attrbyname(data->check_name);
419 radlog(L_ERR, "rlm_counter: Failed to create check attribute %s",
421 counter_detach(data);
424 data->check_attr = dattr->attr;
427 * Find the attribute for the allowed protocol
429 if (data->service_type != NULL) {
430 if ((dval = dict_valbyname(PW_SERVICE_TYPE, data->service_type)) == NULL) {
431 radlog(L_ERR, "rlm_counter: Failed to find attribute number for %s",
433 counter_detach(data);
436 data->service_val = dval->value;
440 * Find when to reset the database.
442 if (data->reset == NULL) {
443 radlog(L_ERR, "rlm_counter: 'reset' must be set.");
444 counter_detach(data);
448 data->reset_time = 0;
449 data->last_reset = now;
451 if (find_next_reset(data,now) == -1){
452 radlog(L_ERR, "rlm_counter: find_next_reset() returned -1. Exiting.");
453 counter_detach(data);
457 if (data->filename == NULL) {
458 radlog(L_ERR, "rlm_counter: 'filename' must be set.");
459 counter_detach(data);
462 data->gdbm = gdbm_open(data->filename, sizeof(int),
463 GDBM_WRCREAT | GDBM_COUNTER_OPTS, 0600, NULL);
464 if (data->gdbm == NULL) {
465 radlog(L_ERR, "rlm_counter: Failed to open file %s: %s",
466 data->filename, strerror(errno));
467 counter_detach(data);
470 if (gdbm_setopt(data->gdbm, GDBM_CACHESIZE, &cache_size, sizeof(int)) == -1)
471 radlog(L_ERR, "rlm_counter: Failed to set cache size");
474 * Look for the DEFAULT1 entry. This entry if it exists contains the
475 * time of the next database reset. This time is set each time we reset
476 * the database. If next_reset < now then we reset the database.
477 * That way we can overcome the problem where radiusd is down during a database
478 * reset time. If we did not keep state information in the database then the reset
479 * would be extended and that would create problems.
481 * We also store the time of the last reset in the DEFAULT2 entry.
483 * If DEFAULT1 and DEFAULT2 do not exist (new database) we add them to the database
486 key_datum.dptr = (char *)default1;
487 key_datum.dsize = strlen(default1);
489 time_datum = gdbm_fetch(data->gdbm, key_datum);
490 if (time_datum.dptr != NULL){
491 time_t next_reset = 0;
493 memcpy(&next_reset, time_datum.dptr, sizeof(time_t));
494 free(time_datum.dptr);
495 if (next_reset && next_reset <= now){
497 data->last_reset = now;
498 ret = reset_db(data);
499 if (ret != RLM_MODULE_OK){
500 radlog(L_ERR, "rlm_counter: reset_db() failed");
501 counter_detach(data);
506 data->reset_time = next_reset;
507 key_datum.dptr = (char *)default2;
508 key_datum.dsize = strlen(default2);
510 time_datum = gdbm_fetch(data->gdbm, key_datum);
511 if (time_datum.dptr != NULL){
512 memcpy(&data->last_reset, time_datum.dptr, sizeof(time_t));
513 free(time_datum.dptr);
517 ret = add_defaults(data);
518 if (ret != RLM_MODULE_OK){
519 radlog(L_ERR, "rlm_counter: add_defaults() failed");
520 counter_detach(data);
527 * Register the counter comparison operation.
529 paircompare_register(data->dict_attr, 0, counter_cmp, data);
534 pthread_mutex_init(&data->mutex, NULL);
542 * Write accounting information to this modules database.
544 static int counter_accounting(void *instance, REQUEST *request)
546 rlm_counter_t *data = (rlm_counter_t *)instance;
549 VALUE_PAIR *key_vp, *count_vp, *proto_vp, *uniqueid_vp;
552 int acctstatustype = 0;
555 if ((key_vp = pairfind(request->packet->vps, PW_ACCT_STATUS_TYPE)) != NULL)
556 acctstatustype = key_vp->lvalue;
558 DEBUG("rlm_counter: Could not find account status type in packet.");
559 return RLM_MODULE_NOOP;
561 if (acctstatustype != PW_STATUS_STOP){
562 DEBUG("rlm_counter: We only run on Accounting-Stop packets.");
563 return RLM_MODULE_NOOP;
565 uniqueid_vp = pairfind(request->packet->vps, PW_ACCT_UNIQUE_SESSION_ID);
566 if (uniqueid_vp != NULL)
567 DEBUG("rlm_counter: Packet Unique ID = '%s'",uniqueid_vp->strvalue);
570 * Before doing anything else, see if we have to reset
573 if (data->reset_time && (data->reset_time <= request->timestamp)) {
576 DEBUG("rlm_counter: Time to reset the database.");
577 data->last_reset = data->reset_time;
578 find_next_reset(data,request->timestamp);
579 pthread_mutex_lock(&data->mutex);
580 ret = reset_db(data);
581 pthread_mutex_unlock(&data->mutex);
582 if (ret != RLM_MODULE_OK)
586 * Check if we need to watch out for a specific service-type. If yes then check it
588 if (data->service_type != NULL) {
589 if ((proto_vp = pairfind(request->packet->vps, PW_SERVICE_TYPE)) == NULL){
590 DEBUG("rlm_counter: Could not find Service-Type attribute in the request. Returning NOOP.");
591 return RLM_MODULE_NOOP;
593 if ((unsigned)proto_vp->lvalue != data->service_val){
594 DEBUG("rlm_counter: This Service-Type is not allowed. Returning NOOP.");
595 return RLM_MODULE_NOOP;
599 * Check if request->timestamp - {Acct-Delay-Time} < last_reset
600 * If yes reject the packet since it is very old
602 key_vp = pairfind(request->packet->vps, PW_ACCT_DELAY_TIME);
604 if (key_vp->lvalue != 0 &&
605 (request->timestamp - key_vp->lvalue) < data->last_reset){
606 DEBUG("rlm_counter: This packet is too old. Returning NOOP.");
607 return RLM_MODULE_NOOP;
614 * Look for the key. User-Name is special. It means
615 * The REAL username, after stripping.
617 key_vp = (data->key_attr == PW_USER_NAME) ? request->username : pairfind(request->packet->vps, data->key_attr);
619 DEBUG("rlm_counter: Could not find the key-attribute in the request. Returning NOOP.");
620 return RLM_MODULE_NOOP;
624 * Look for the attribute to use as a counter.
626 count_vp = pairfind(request->packet->vps, data->count_attr);
627 if (count_vp == NULL){
628 DEBUG("rlm_counter: Could not find the count-attribute in the request.");
629 return RLM_MODULE_NOOP;
632 key_datum.dptr = key_vp->strvalue;
633 key_datum.dsize = key_vp->length;
635 DEBUG("rlm_counter: Searching the database for key '%s'",key_vp->strvalue);
636 pthread_mutex_lock(&data->mutex);
637 count_datum = gdbm_fetch(data->gdbm, key_datum);
638 pthread_mutex_unlock(&data->mutex);
639 if (count_datum.dptr == NULL){
640 DEBUG("rlm_counter: Could not find the requested key in the database.");
641 counter.user_counter = 0;
642 if (uniqueid_vp != NULL)
643 strncpy(counter.uniqueid,uniqueid_vp->strvalue,UNIQUEID_MAX_LEN - 1);
645 memset((char *)counter.uniqueid,0,UNIQUEID_MAX_LEN);
648 DEBUG("rlm_counter: Key found.");
649 memcpy(&counter, count_datum.dptr, sizeof(rad_counter));
650 free(count_datum.dptr);
651 if (counter.uniqueid)
652 DEBUG("rlm_counter: Counter Unique ID = '%s'",counter.uniqueid);
653 if (uniqueid_vp != NULL){
654 if (counter.uniqueid != NULL &&
655 strncmp(uniqueid_vp->strvalue,counter.uniqueid, UNIQUEID_MAX_LEN - 1) == 0){
656 DEBUG("rlm_counter: Unique IDs for user match. Droping the request.");
657 return RLM_MODULE_NOOP;
659 strncpy(counter.uniqueid,uniqueid_vp->strvalue,UNIQUEID_MAX_LEN - 1);
661 DEBUG("rlm_counter: User=%s, Counter=%d.",request->username->strvalue,counter.user_counter);
664 if (data->count_attr == PW_ACCT_SESSION_TIME) {
666 * If session time < diff then the user got in after the
667 * last reset. So add his session time, otherwise add the
670 * That way if he logged in at 23:00 and we reset the
671 * daily counter at 24:00 and he logged out at 01:00
672 * then we will only count one hour (the one in the new
673 * day). That is the right thing
675 diff = request->timestamp - data->last_reset;
676 counter.user_counter += (count_vp->lvalue < diff) ? count_vp->lvalue : diff;
678 } else if (count_vp->type == PW_TYPE_INTEGER) {
680 * Integers get counted, without worrying about
683 counter.user_counter += count_vp->lvalue;
687 * The attribute is NOT an integer, just count once
688 * more that we've seen it.
690 counter.user_counter++;
693 DEBUG("rlm_counter: User=%s, New Counter=%d.",request->username->strvalue,counter.user_counter);
694 count_datum.dptr = (char *) &counter;
695 count_datum.dsize = sizeof(rad_counter);
697 DEBUG("rlm_counter: Storing new value in database.");
698 pthread_mutex_lock(&data->mutex);
699 rcode = gdbm_store(data->gdbm, key_datum, count_datum, GDBM_REPLACE);
700 pthread_mutex_unlock(&data->mutex);
702 radlog(L_ERR, "rlm_counter: Failed storing data to %s: %s",
703 data->filename, gdbm_strerror(gdbm_errno));
704 return RLM_MODULE_FAIL;
706 DEBUG("rlm_counter: New value stored successfully.");
708 return RLM_MODULE_OK;
712 * Find the named user in this modules database. Create the set
713 * of attribute-value pairs to check and reply with for this user
714 * from the database. The authentication code only needs to check
715 * the password, the rest is done here.
717 static int counter_authorize(void *instance, REQUEST *request)
719 rlm_counter_t *data = (rlm_counter_t *) instance;
720 int ret=RLM_MODULE_NOOP;
725 VALUE_PAIR *key_vp, *check_vp;
726 VALUE_PAIR *reply_item;
729 /* quiet the compiler */
734 * Before doing anything else, see if we have to reset
737 if (data->reset_time && (data->reset_time <= request->timestamp)) {
740 data->last_reset = data->reset_time;
741 find_next_reset(data,request->timestamp);
742 pthread_mutex_lock(&data->mutex);
743 ret2 = reset_db(data);
744 pthread_mutex_unlock(&data->mutex);
745 if (ret2 != RLM_MODULE_OK)
751 * Look for the key. User-Name is special. It means
752 * The REAL username, after stripping.
754 DEBUG2("rlm_counter: Entering module authorize code");
755 key_vp = (data->key_attr == PW_USER_NAME) ? request->username : pairfind(request->packet->vps, data->key_attr);
756 if (key_vp == NULL) {
757 DEBUG2("rlm_counter: Could not find Key value pair");
762 * Look for the check item
764 if ((check_vp= pairfind(request->config_items, data->check_attr)) == NULL) {
765 DEBUG2("rlm_counter: Could not find Check item value pair");
769 key_datum.dptr = key_vp->strvalue;
770 key_datum.dsize = key_vp->length;
777 counter.user_counter = 0;
779 DEBUG("rlm_counter: Searching the database for key '%s'",key_vp->strvalue);
780 pthread_mutex_lock(&data->mutex);
781 count_datum = gdbm_fetch(data->gdbm, key_datum);
782 pthread_mutex_unlock(&data->mutex);
783 if (count_datum.dptr != NULL){
784 DEBUG("rlm_counter: Key Found.");
785 memcpy(&counter, count_datum.dptr, sizeof(rad_counter));
786 free(count_datum.dptr);
789 DEBUG("rlm_counter: Could not find the requested key in the database.");
792 * Check if check item > counter
794 DEBUG("rlm_counter: Check item = %d, Count = %d",check_vp->lvalue,counter.user_counter);
795 res=check_vp->lvalue - counter.user_counter;
797 DEBUG("rlm_counter: res is greater than zero");
798 if (data->count_attr == PW_ACCT_SESSION_TIME) {
800 * Do the following only if the count attribute is
805 * We are assuming that simultaneous-use=1. But
806 * even if that does not happen then our user
807 * could login at max for 2*max-usage-time Is
812 * User is allowed, but set Session-Timeout.
813 * Stolen from main/auth.c
817 * If we are near a reset then add the next
818 * limit, so that the user will not need to
821 if (data->reset_time && (
822 res >= (data->reset_time - request->timestamp))) {
823 res += check_vp->lvalue;
826 if ((reply_item = pairfind(request->reply->vps, PW_SESSION_TIMEOUT)) != NULL) {
827 if (reply_item->lvalue > res)
828 reply_item->lvalue = res;
830 if ((reply_item = paircreate(PW_SESSION_TIMEOUT, PW_TYPE_INTEGER)) == NULL) {
831 radlog(L_ERR|L_CONS, "no memory");
832 return RLM_MODULE_NOOP;
834 reply_item->lvalue = res;
835 pairadd(&request->reply->vps, reply_item);
841 DEBUG2("rlm_counter: (Check item - counter) is greater than zero");
842 DEBUG2("rlm_counter: Authorized user %s, check_item=%d, counter=%d",
843 key_vp->strvalue,check_vp->lvalue,counter.user_counter);
844 DEBUG2("rlm_counter: Sent Reply-Item for user %s, Type=Session-Timeout, value=%d",
845 key_vp->strvalue,res);
848 char module_fmsg[MAX_STRING_LEN];
849 VALUE_PAIR *module_fmsg_vp;
852 * User is denied access, send back a reply message
854 sprintf(msg, "Your maximum %s usage time has been reached", data->reset);
855 reply_item=pairmake("Reply-Message", msg, T_OP_EQ);
856 pairadd(&request->reply->vps, reply_item);
858 snprintf(module_fmsg,sizeof(module_fmsg), "rlm_counter: Maximum %s usage time reached", data->reset);
859 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
860 pairadd(&request->packet->vps, module_fmsg_vp);
862 ret=RLM_MODULE_REJECT;
864 DEBUG2("rlm_counter: Rejected user %s, check_item=%d, counter=%d",
865 key_vp->strvalue,check_vp->lvalue,counter.user_counter);
871 static int counter_detach(void *instance)
873 rlm_counter_t *data = (rlm_counter_t *) instance;
875 paircompare_unregister(data->dict_attr, counter_cmp);
877 gdbm_close(data->gdbm);
878 free(data->filename);
880 free(data->key_name);
881 free(data->count_attribute);
882 free(data->counter_name);
883 free(data->check_name);
884 free(data->service_type);
885 pthread_mutex_destroy(&data->mutex);
892 * The module name should be the only globally exported symbol.
893 * That is, everything else should be 'static'.
895 * If the module needs to temporarily modify it's instantiation
896 * data, the type should be changed to RLM_TYPE_THREAD_UNSAFE.
897 * The server will then take care of ensuring that the module
898 * is single-threaded.
900 module_t rlm_counter = {
902 RLM_TYPE_THREAD_SAFE, /* type */
903 NULL, /* initialization */
904 counter_instantiate, /* instantiation */
906 NULL, /* authentication */
907 counter_authorize, /* authorization */
908 NULL, /* preaccounting */
909 counter_accounting, /* accounting */
910 NULL, /* checksimul */
911 NULL, /* pre-proxy */
912 NULL, /* post-proxy */
915 counter_detach, /* detach */