src/modules/rlm_sql/rlm_sql.c

   1 /*
   2  * rlm_sql.c            SQL Module
   3  *              Main SQL module file. Most ICRADIUS code is located in sql.c
   4  *
   5  * Version:     $Id$
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  * Copyright 2000,2006  The FreeRADIUS server project
  22  * Copyright 2000  Mike Machado <mike@innercite.com>
  23  * Copyright 2000  Alan DeKok <aland@ox.org>
  24  */
  25
  26 #include <freeradius-devel/ident.h>
  27 RCSID("$Id$")
  28
  29 #include <freeradius-devel/radiusd.h>
  30 #include <freeradius-devel/modules.h>
  31 #include <freeradius-devel/rad_assert.h>
  32
  33 #include <sys/stat.h>
  34
  35 #include <sys/wait.h>
  36
  37 #include "rlm_sql.h"
  38
  39 static char *allowed_chars = NULL;
  40
  41 static const CONF_PARSER module_config[] = {
  42         {"driver",PW_TYPE_STRING_PTR,
  43          offsetof(SQL_CONFIG,sql_driver), NULL, "mysql"},
  44         {"server",PW_TYPE_STRING_PTR,
  45          offsetof(SQL_CONFIG,sql_server), NULL, "localhost"},
  46         {"port",PW_TYPE_STRING_PTR,
  47          offsetof(SQL_CONFIG,sql_port), NULL, ""},
  48         {"login", PW_TYPE_STRING_PTR,
  49          offsetof(SQL_CONFIG,sql_login), NULL, ""},
  50         {"password", PW_TYPE_STRING_PTR,
  51          offsetof(SQL_CONFIG,sql_password), NULL, ""},
  52         {"radius_db", PW_TYPE_STRING_PTR,
  53          offsetof(SQL_CONFIG,sql_db), NULL, "radius"},
  54         {"read_groups", PW_TYPE_BOOLEAN,
  55          offsetof(SQL_CONFIG,read_groups), NULL, "yes"},
  56         {"sqltrace", PW_TYPE_BOOLEAN,
  57          offsetof(SQL_CONFIG,sqltrace), NULL, "no"},
  58         {"sqltracefile", PW_TYPE_STRING_PTR,
  59          offsetof(SQL_CONFIG,tracefile), NULL, SQLTRACEFILE},
  60         {"readclients", PW_TYPE_BOOLEAN,
  61          offsetof(SQL_CONFIG,do_clients), NULL, "no"},
  62         {"deletestalesessions", PW_TYPE_BOOLEAN,
  63          offsetof(SQL_CONFIG,deletestalesessions), NULL, "yes"},
  64         {"num_sql_socks", PW_TYPE_INTEGER,
  65          offsetof(SQL_CONFIG,num_sql_socks), NULL, "5"},
  66         {"sql_user_name", PW_TYPE_STRING_PTR,
  67          offsetof(SQL_CONFIG,query_user), NULL, ""},
  68         {"default_user_profile", PW_TYPE_STRING_PTR,
  69          offsetof(SQL_CONFIG,default_profile), NULL, ""},
  70         {"nas_query", PW_TYPE_STRING_PTR,
  71          offsetof(SQL_CONFIG,nas_query), NULL, "SELECT id,nasname,shortname,type,secret FROM nas"},
  72         {"authorize_check_query", PW_TYPE_STRING_PTR,
  73          offsetof(SQL_CONFIG,authorize_check_query), NULL, ""},
  74         {"authorize_reply_query", PW_TYPE_STRING_PTR,
  75          offsetof(SQL_CONFIG,authorize_reply_query), NULL, ""},
  76         {"authorize_group_check_query", PW_TYPE_STRING_PTR,
  77          offsetof(SQL_CONFIG,authorize_group_check_query), NULL, ""},
  78         {"authorize_group_reply_query", PW_TYPE_STRING_PTR,
  79          offsetof(SQL_CONFIG,authorize_group_reply_query), NULL, ""},
  80         {"accounting_onoff_query", PW_TYPE_STRING_PTR,
  81          offsetof(SQL_CONFIG,accounting_onoff_query), NULL, ""},
  82         {"accounting_update_query", PW_TYPE_STRING_PTR,
  83          offsetof(SQL_CONFIG,accounting_update_query), NULL, ""},
  84         {"accounting_update_query_alt", PW_TYPE_STRING_PTR,
  85          offsetof(SQL_CONFIG,accounting_update_query_alt), NULL, ""},
  86         {"accounting_start_query", PW_TYPE_STRING_PTR,
  87          offsetof(SQL_CONFIG,accounting_start_query), NULL, ""},
  88         {"accounting_start_query_alt", PW_TYPE_STRING_PTR,
  89          offsetof(SQL_CONFIG,accounting_start_query_alt), NULL, ""},
  90         {"accounting_stop_query", PW_TYPE_STRING_PTR,
  91          offsetof(SQL_CONFIG,accounting_stop_query), NULL, ""},
  92         {"accounting_stop_query_alt", PW_TYPE_STRING_PTR,
  93          offsetof(SQL_CONFIG,accounting_stop_query_alt), NULL, ""},
  94         {"group_membership_query", PW_TYPE_STRING_PTR,
  95          offsetof(SQL_CONFIG,groupmemb_query), NULL, ""},
  96         {"connect_failure_retry_delay", PW_TYPE_INTEGER,
  97          offsetof(SQL_CONFIG,connect_failure_retry_delay), NULL, "60"},
  98         {"simul_count_query", PW_TYPE_STRING_PTR,
  99          offsetof(SQL_CONFIG,simul_count_query), NULL, ""},
 100         {"simul_verify_query", PW_TYPE_STRING_PTR,
 101          offsetof(SQL_CONFIG,simul_verify_query), NULL, ""},
 102         {"postauth_query", PW_TYPE_STRING_PTR,
 103          offsetof(SQL_CONFIG,postauth_query), NULL, ""},
 104         {"safe-characters", PW_TYPE_STRING_PTR,
 105          offsetof(SQL_CONFIG,allowed_chars), NULL,
 106         "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"},
 107
 108         {NULL, -1, 0, NULL, NULL}
 109 };
 110
 111 /*
 112  *      Fall-Through checking function from rlm_files.c
 113  */
 114 static int fallthrough(VALUE_PAIR *vp)
 115 {
 116         VALUE_PAIR *tmp;
 117         tmp = pairfind(vp, PW_FALL_THROUGH);
 118
 119         return tmp ? tmp->vp_integer : 0;
 120 }
 121
 122
 123
 124 /*
 125  *      Yucky prototype.
 126  */
 127 static int generate_sql_clients(SQL_INST *inst);
 128 static int sql_escape_func(char *out, int outlen, const char *in);
 129
 130 /*
 131  *      sql xlat function. Right now only SELECTs are supported. Only
 132  *      the first element of the SELECT result will be used.
 133  */
 134 static int sql_xlat(void *instance, REQUEST *request,
 135                     char *fmt, char *out, size_t freespace,
 136                     UNUSED RADIUS_ESCAPE_STRING func)
 137 {
 138         SQLSOCK *sqlsocket;
 139         SQL_ROW row;
 140         SQL_INST *inst = instance;
 141         char querystr[MAX_QUERY_LEN];
 142         char sqlusername[MAX_STRING_LEN];
 143         int ret = 0;
 144
 145         DEBUG("rlm_sql (%s): - sql_xlat", inst->config->xlat_name);
 146         /*
 147          * Add SQL-User-Name attribute just in case it is needed
 148          *  We could search the string fmt for SQL-User-Name to see if this is
 149          *  needed or not
 150          */
 151         sql_set_user(inst, request, sqlusername, NULL);
 152         /*
 153          * Do an xlat on the provided string (nice recursive operation).
 154          */
 155         if (!radius_xlat(querystr, sizeof(querystr), fmt, request, sql_escape_func)) {
 156                 radlog(L_ERR, "rlm_sql (%s): xlat failed.",
 157                        inst->config->xlat_name);
 158                 return 0;
 159         }
 160
 161         query_log(request, inst,querystr);
 162         sqlsocket = sql_get_socket(inst);
 163         if (sqlsocket == NULL)
 164                 return 0;
 165         if (rlm_sql_select_query(sqlsocket,inst,querystr)){
 166                 radlog(L_ERR, "rlm_sql (%s): database query error, %s: %s",
 167                        inst->config->xlat_name,querystr,
 168                        (char *)(inst->module->sql_error)(sqlsocket, inst->config));
 169                 sql_release_socket(inst,sqlsocket);
 170                 return 0;
 171         }
 172
 173         ret = rlm_sql_fetch_row(sqlsocket, inst);
 174
 175         if (ret) {
 176                 DEBUG("rlm_sql (%s): SQL query did not succeed",
 177                       inst->config->xlat_name);
 178                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 179                 sql_release_socket(inst,sqlsocket);
 180                 return 0;
 181         }
 182
 183         row = sqlsocket->row;
 184         if (row == NULL) {
 185                 DEBUG("rlm_sql (%s): SQL query did not return any results",
 186                       inst->config->xlat_name);
 187                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 188                 sql_release_socket(inst,sqlsocket);
 189                 return 0;
 190         }
 191
 192         if (row[0] == NULL){
 193                 DEBUG("rlm_sql (%s): row[0] returned NULL",
 194                       inst->config->xlat_name);
 195                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 196                 sql_release_socket(inst,sqlsocket);
 197                 return 0;
 198         }
 199         ret = strlen(row[0]);
 200         if (ret >= freespace){
 201                 DEBUG("rlm_sql (%s): sql_xlat:: Insufficient string space",
 202                       inst->config->xlat_name);
 203                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 204                 sql_release_socket(inst,sqlsocket);
 205                 return 0;
 206         }
 207
 208         strlcpy(out,row[0],freespace);
 209
 210         DEBUG("rlm_sql (%s): - sql_xlat finished",
 211               inst->config->xlat_name);
 212
 213         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 214         sql_release_socket(inst,sqlsocket);
 215         return ret;
 216 }
 217
 218 static int generate_sql_clients(SQL_INST *inst)
 219 {
 220         SQLSOCK *sqlsocket;
 221         SQL_ROW row;
 222         char querystr[MAX_QUERY_LEN];
 223         RADCLIENT *c;
 224         char *prefix_ptr = NULL;
 225         unsigned int i = 0;
 226
 227         DEBUG("rlm_sql (%s): Processing generate_sql_clients",
 228               inst->config->xlat_name);
 229
 230         /* NAS query isn't xlat'ed */
 231         strlcpy(querystr, inst->config->nas_query, sizeof(querystr));
 232         DEBUG("rlm_sql (%s) in generate_sql_clients: query is %s",
 233               inst->config->xlat_name, querystr);
 234
 235         sqlsocket = sql_get_socket(inst);
 236         if (sqlsocket == NULL)
 237                 return -1;
 238         if (rlm_sql_select_query(sqlsocket,inst,querystr)){
 239                 radlog(L_ERR, "rlm_sql (%s): database query error, %s: %s",
 240                         inst->config->xlat_name,querystr,
 241                         (char *)(inst->module->sql_error)(sqlsocket, inst->config));
 242                 sql_release_socket(inst,sqlsocket);
 243                 return -1;
 244         }
 245
 246         while(rlm_sql_fetch_row(sqlsocket, inst) == 0) {
 247                 i++;
 248                 row = sqlsocket->row;
 249                 if (row == NULL)
 250                         break;
 251         /*
 252          *  The return data for each row MUST be in the following order:
 253          *
 254          *  0. Row ID (currently unused)
 255          *  1. Name (or IP address)
 256          *  2. Shortname
 257          *  3. Type
 258          *  4. Secret
 259          */
 260                 if (!row[0]){
 261                         radlog(L_ERR, "rlm_sql (%s): No row id found on pass %d",inst->config->xlat_name,i);
 262                         continue;
 263                 }
 264                 if (!row[1]){
 265                         radlog(L_ERR, "rlm_sql (%s): No nasname found for row %s",inst->config->xlat_name,row[0]);
 266                         continue;
 267                 }
 268                 if (!row[2]){
 269                         radlog(L_ERR, "rlm_sql (%s): No short name found for row %s",inst->config->xlat_name,row[0]);
 270                         continue;
 271                 }
 272                 if (!row[4]){
 273                         radlog(L_ERR, "rlm_sql (%s): No secret found for row %s",inst->config->xlat_name,row[0]);
 274                         continue;
 275                 }
 276
 277                 DEBUG("rlm_sql (%s): Read entry nasname=%s,shortname=%s,secret=%s",inst->config->xlat_name,
 278                         row[1],row[2],row[4]);
 279
 280                 c = rad_malloc(sizeof(*c));
 281                 memset(c, 0, sizeof(*c));
 282
 283                 /*
 284                  *      Look for prefixes
 285                  */
 286                 c->prefix = -1;
 287                 prefix_ptr = strchr(row[1], '/');
 288                 if (prefix_ptr) {
 289                         c->prefix = atoi(prefix_ptr + 1);
 290                         if ((c->prefix < 0) || (c->prefix > 128)) {
 291                                 radlog(L_ERR, "rlm_sql (%s): Invalid Prefix value '%s' for IP.",
 292                                        inst->config->xlat_name, prefix_ptr + 1);
 293                                 free(c);
 294                                 continue;
 295                         }
 296                         /* Replace '/' with '\0' */
 297                         *prefix_ptr = '\0';
 298                 }
 299
 300                 /*
 301                  *      Always get the numeric representation of IP
 302                  */
 303                 if (ip_hton(row[1], AF_UNSPEC, &c->ipaddr) < 0) {
 304                         radlog(L_CONS|L_ERR, "rlm_sql (%s): Failed to look up hostname %s: %s",
 305                                inst->config->xlat_name,
 306                                row[1], librad_errstr);
 307                         free(c);
 308                         continue;
 309                 } else {
 310                         char buffer[256];
 311                         ip_ntoh(&c->ipaddr, buffer, sizeof(buffer));
 312                         c->longname = strdup(buffer);
 313                 }
 314
 315                 if (c->prefix < 0) switch (c->ipaddr.af) {
 316                 case AF_INET:
 317                         c->prefix = 32;
 318                         break;
 319                 case AF_INET6:
 320                         c->prefix = 128;
 321                         break;
 322                 default:
 323                         break;
 324                 }
 325
 326                 /*
 327                  *      Other values (secret, shortname, nastype)
 328                  */
 329                 c->secret = (u_char *)strdup(row[4]);
 330                 c->shortname = strdup(row[2]);
 331                 if(row[3] != NULL)
 332                         c->nastype = strdup(row[3]);
 333
 334                 DEBUG("rlm_sql (%s): Adding client %s (%s) to clients list",
 335                       inst->config->xlat_name,
 336                       c->longname,c->shortname);
 337                 if (!client_add(mainconfig.clients, c)) {
 338                         DEBUG("rlm_sql (%s): Failed to add client %s (%s) to clients list.  Maybe there's a duplicate?",
 339                               inst->config->xlat_name,
 340                               c->longname,c->shortname);
 341                         client_free(c);
 342                         return -1;
 343                 }
 344         }
 345         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 346         sql_release_socket(inst, sqlsocket);
 347
 348         return 0;
 349 }
 350
 351
 352 /*
 353  *      Translate the SQL queries.
 354  */
 355 static int sql_escape_func(char *out, int outlen, const char *in)
 356 {
 357         int len = 0;
 358
 359         while (in[0]) {
 360                 /*
 361                  *      Non-printable characters get replaced with their
 362                  *      mime-encoded equivalents.
 363                  */
 364                 if ((in[0] < 32) ||
 365                     strchr(allowed_chars, *in) == NULL) {
 366                         /*
 367                          *      Only 3 or less bytes available.
 368                          */
 369                         if (outlen <= 3) {
 370                                 break;
 371                         }
 372
 373                         snprintf(out, outlen, "=%02X", (unsigned char) in[0]);
 374                         in++;
 375                         out += 3;
 376                         outlen -= 3;
 377                         len += 3;
 378                         continue;
 379                 }
 380
 381                 /*
 382                  *      Only one byte left.
 383                  */
 384                 if (outlen <= 1) {
 385                         break;
 386                 }
 387
 388                 /*
 389                  *      Allowed character.
 390                  */
 391                 *out = *in;
 392                 out++;
 393                 in++;
 394                 outlen--;
 395                 len++;
 396         }
 397         *out = '\0';
 398         return len;
 399 }
 400
 401 /*
 402  *      Set the SQL user name.
 403  *
 404  *      We don't call the escape function here. The resulting string
 405  *      will be escaped later in the queries xlat so we don't need to
 406  *      escape it twice. (it will make things wrong if we have an
 407  *      escape candidate character in the username)
 408  */
 409 int sql_set_user(SQL_INST *inst, REQUEST *request, char *sqlusername, const char *username)
 410 {
 411         VALUE_PAIR *vp=NULL;
 412         char tmpuser[MAX_STRING_LEN];
 413
 414         tmpuser[0] = '\0';
 415         sqlusername[0]= '\0';
 416
 417         /* Remove any user attr we added previously */
 418         pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 419
 420         if (username != NULL) {
 421                 strlcpy(tmpuser, username, sizeof(tmpuser));
 422         } else if (strlen(inst->config->query_user)) {
 423                 radius_xlat(tmpuser, sizeof(tmpuser), inst->config->query_user, request, NULL);
 424         } else {
 425                 return 0;
 426         }
 427
 428         strlcpy(sqlusername, tmpuser, MAX_STRING_LEN);
 429         DEBUG2("rlm_sql (%s): sql_set_user escaped user --> '%s'",
 430                        inst->config->xlat_name, sqlusername);
 431         vp = pairmake("SQL-User-Name", sqlusername, 0);
 432         if (vp == NULL) {
 433                 radlog(L_ERR, "%s", librad_errstr);
 434                 return -1;
 435         }
 436
 437         pairadd(&request->packet->vps, vp);
 438         return 0;
 439
 440 }
 441
 442
 443 static void sql_grouplist_free (SQL_GROUPLIST **group_list)
 444 {
 445         SQL_GROUPLIST *last;
 446
 447         while(*group_list) {
 448                 last = *group_list;
 449                 *group_list = (*group_list)->next;
 450                 free(last);
 451         }
 452 }
 453
 454
 455 static int sql_get_grouplist (SQL_INST *inst, SQLSOCK *sqlsocket, REQUEST *request, SQL_GROUPLIST **group_list)
 456 {
 457         char    querystr[MAX_QUERY_LEN];
 458         int     num_groups = 0;
 459         SQL_ROW row;
 460         SQL_GROUPLIST   *group_list_tmp;
 461
 462         /* NOTE: sql_set_user should have been run before calling this function */
 463
 464         group_list_tmp = *group_list = NULL;
 465
 466         if (inst->config->groupmemb_query[0] == 0)
 467                 return 1;
 468
 469         if (!radius_xlat(querystr, sizeof(querystr), inst->config->groupmemb_query, request, sql_escape_func)) {
 470                 radlog(L_ERR, "rlm_sql (%s): xlat failed.",
 471                         inst->config->xlat_name);
 472                 return -1;
 473         }
 474
 475         if (rlm_sql_select_query(sqlsocket, inst, querystr) < 0) {
 476                 radlog(L_ERR, "rlm_sql (%s): database query error, %s: %s",
 477                         inst->config->xlat_name,querystr,
 478                         (char *)(inst->module->sql_error)(sqlsocket,inst->config));
 479                 return -1;
 480         }
 481         while (rlm_sql_fetch_row(sqlsocket, inst) == 0) {
 482                 row = sqlsocket->row;
 483                 if (row == NULL)
 484                         break;
 485                 if (row[0] == NULL){
 486                         DEBUG("rlm_sql (%s): row[0] returned NULL",
 487                                 inst->config->xlat_name);
 488                         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 489                         sql_grouplist_free(group_list);
 490                         return -1;
 491                 }
 492                 if (*group_list == NULL) {
 493                         *group_list = rad_malloc(sizeof(SQL_GROUPLIST));
 494                         group_list_tmp = *group_list;
 495                 } else {
 496                         group_list_tmp->next = rad_malloc(sizeof(SQL_GROUPLIST));
 497                         group_list_tmp = group_list_tmp->next;
 498                 }
 499                 group_list_tmp->next = NULL;
 500                 strlcpy(group_list_tmp->groupname, row[0], MAX_STRING_LEN);
 501         }
 502
 503         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
 504
 505         return num_groups;
 506 }
 507
 508
 509 /*
 510  * sql groupcmp function. That way we can do group comparisons (in the users file for example)
 511  * with the group memberships reciding in sql
 512  * The group membership query should only return one element which is the username. The returned
 513  * username will then be checked with the passed check string.
 514  */
 515
 516 static int sql_groupcmp(void *instance, REQUEST *req, VALUE_PAIR *request, VALUE_PAIR *check,
 517                         VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
 518 {
 519         SQLSOCK *sqlsocket;
 520         SQL_INST *inst = instance;
 521         char sqlusername[MAX_STRING_LEN];
 522         SQL_GROUPLIST *group_list, *group_list_tmp;
 523
 524         check_pairs = check_pairs;
 525         reply_pairs = reply_pairs;
 526         request = request;
 527
 528         DEBUG("rlm_sql (%s): - sql_groupcmp", inst->config->xlat_name);
 529         if (!check || !check->vp_strvalue || !check->length){
 530                 DEBUG("rlm_sql (%s): sql_groupcmp: Illegal group name",
 531                       inst->config->xlat_name);
 532                 return 1;
 533         }
 534         if (req == NULL){
 535                 DEBUG("rlm_sql (%s): sql_groupcmp: NULL request",
 536                       inst->config->xlat_name);
 537                 return 1;
 538         }
 539         /*
 540          * Set, escape, and check the user attr here
 541          */
 542         if (sql_set_user(inst, req, sqlusername, NULL) < 0)
 543                 return 1;
 544
 545         /*
 546          *      Get a socket for this lookup
 547          */
 548         sqlsocket = sql_get_socket(inst);
 549         if (sqlsocket == NULL) {
 550                 /* Remove the username we (maybe) added above */
 551                 pairdelete(&req->packet->vps, PW_SQL_USER_NAME);
 552                 return 1;
 553         }
 554
 555         /*
 556          *      Get the list of groups this user is a member of
 557          */
 558         if (sql_get_grouplist(inst, sqlsocket, req, &group_list)) {
 559                 radlog(L_ERR, "rlm_sql (%s): Error getting group membership",
 560                        inst->config->xlat_name);
 561                 /* Remove the username we (maybe) added above */
 562                 pairdelete(&req->packet->vps, PW_SQL_USER_NAME);
 563                 sql_release_socket(inst, sqlsocket);
 564                 return 1;
 565         }
 566
 567         for (group_list_tmp = group_list; group_list_tmp != NULL; group_list_tmp = group_list_tmp->next) {
 568                 if (strcmp(group_list_tmp->groupname, check->vp_strvalue) == 0){
 569                         DEBUG("rlm_sql (%s): - sql_groupcmp finished: User is a member of group %s",
 570                               inst->config->xlat_name,
 571                               (char *)check->vp_strvalue);
 572                         /* Free the grouplist */
 573                         sql_grouplist_free(&group_list);
 574                         /* Remove the username we (maybe) added above */
 575                         pairdelete(&req->packet->vps, PW_SQL_USER_NAME);
 576                         sql_release_socket(inst, sqlsocket);
 577                         return 0;
 578                 }
 579         }
 580
 581         /* Free the grouplist */
 582         sql_grouplist_free(&group_list);
 583         /* Remove the username we (maybe) added above */
 584         pairdelete(&req->packet->vps, PW_SQL_USER_NAME);
 585         sql_release_socket(inst,sqlsocket);
 586
 587         DEBUG("rlm_sql (%s): - sql_groupcmp finished: User is NOT a member of group %s",
 588               inst->config->xlat_name, (char *)check->vp_strvalue);
 589
 590         return 1;
 591 }
 592
 593
 594
 595 static int rlm_sql_process_groups(SQL_INST *inst, REQUEST *request, SQLSOCK *sqlsocket, int *dofallthrough)
 596 {
 597         VALUE_PAIR *check_tmp = NULL;
 598         VALUE_PAIR *reply_tmp = NULL;
 599         SQL_GROUPLIST *group_list, *group_list_tmp;
 600         VALUE_PAIR *sql_group = NULL;
 601         char    querystr[MAX_QUERY_LEN];
 602         int found = 0;
 603         int rows;
 604
 605         /*
 606          *      Get the list of groups this user is a member of
 607          */
 608         if (sql_get_grouplist(inst, sqlsocket, request, &group_list)) {
 609                 radlog(L_ERR, "rlm_sql (%s): Error retrieving group list",
 610                        inst->config->xlat_name);
 611                 return -1;
 612         }
 613
 614         for (group_list_tmp = group_list; group_list_tmp != NULL && *dofallthrough != 0; group_list_tmp = group_list_tmp->next) {
 615                 /*
 616                  *      Add the Sql-Group attribute to the request list so we know
 617                  *      which group we're retrieving attributes for
 618                  */
 619                 sql_group = pairmake("Sql-Group", group_list_tmp->groupname, T_OP_EQ);
 620                 if (!sql_group) {
 621                         radlog(L_ERR, "rlm_sql (%s): Error creating Sql-Group attribute",
 622                                inst->config->xlat_name);
 623                         return -1;
 624                 }
 625                 pairadd(&request->packet->vps, sql_group);
 626                 if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_check_query, request, sql_escape_func)) {
 627                         radlog(L_ERR, "rlm_sql (%s): Error generating query; rejecting user",
 628                                inst->config->xlat_name);
 629                         /* Remove the grouup we added above */
 630                         pairdelete(&request->packet->vps, PW_SQL_GROUP);
 631                         return -1;
 632                 }
 633                 rows = sql_getvpdata(inst, sqlsocket, &check_tmp, querystr);
 634                 if (rows < 0) {
 635                         radlog(L_ERR, "rlm_sql (%s): Error retrieving check pairs for group %s",
 636                                inst->config->xlat_name, group_list_tmp->groupname);
 637                         /* Remove the grouup we added above */
 638                         pairdelete(&request->packet->vps, PW_SQL_GROUP);
 639                         pairfree(&check_tmp);
 640                         return -1;
 641                 } else if (rows > 0) {
 642                         /*
 643                          *      Only do this if *some* check pairs were returned
 644                          */
 645                         if (paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) == 0) {
 646                                 found = 1;
 647                                 DEBUG2("rlm_sql (%s): User found in group %s",
 648                                         inst->config->xlat_name, group_list_tmp->groupname);
 649                                 /*
 650                                  *      Now get the reply pairs since the paircompare matched
 651                                  */
 652                                 if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_reply_query, request, sql_escape_func)) {
 653                                         radlog(L_ERR, "rlm_sql (%s): Error generating query; rejecting user",
 654                                                inst->config->xlat_name);
 655                                         /* Remove the grouup we added above */
 656                                         pairdelete(&request->packet->vps, PW_SQL_GROUP);
 657                                         pairfree(&check_tmp);
 658                                         return -1;
 659                                 }
 660                                 if (sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr) < 0) {
 661                                         radlog(L_ERR, "rlm_sql (%s): Error retrieving reply pairs for group %s",
 662                                                inst->config->xlat_name, group_list_tmp->groupname);
 663                                         /* Remove the grouup we added above */
 664                                         pairdelete(&request->packet->vps, PW_SQL_GROUP);
 665                                         pairfree(&check_tmp);
 666                                         pairfree(&reply_tmp);
 667                                         return -1;
 668                                 }
 669                                 *dofallthrough = fallthrough(reply_tmp);
 670                                 pairxlatmove(request, &request->reply->vps, &reply_tmp);
 671                                 pairxlatmove(request, &request->config_items, &check_tmp);
 672                         }
 673                 } else {
 674                         /*
 675                          *      rows == 0.  This is like having the username on a line
 676                          *      in the user's file with no check vp's.  As such, we treat
 677                          *      it as found and add the reply attributes, so that we
 678                          *      match expected behavior
 679                          */
 680                         found = 1;
 681                         DEBUG2("rlm_sql (%s): User found in group %s",
 682                                 inst->config->xlat_name, group_list_tmp->groupname);
 683                         /*
 684                          *      Now get the reply pairs since the paircompare matched
 685                          */
 686                         if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_reply_query, request, sql_escape_func)) {
 687                                 radlog(L_ERR, "rlm_sql (%s): Error generating query; rejecting user",
 688                                        inst->config->xlat_name);
 689                                 /* Remove the grouup we added above */
 690                                 pairdelete(&request->packet->vps, PW_SQL_GROUP);
 691                                 pairfree(&check_tmp);
 692                                 return -1;
 693                         }
 694                         if (sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr) < 0) {
 695                                 radlog(L_ERR, "rlm_sql (%s): Error retrieving reply pairs for group %s",
 696                                        inst->config->xlat_name, group_list_tmp->groupname);
 697                                 /* Remove the grouup we added above */
 698                                 pairdelete(&request->packet->vps, PW_SQL_GROUP);
 699                                 pairfree(&check_tmp);
 700                                 pairfree(&reply_tmp);
 701                                 return -1;
 702                         }
 703                         *dofallthrough = fallthrough(reply_tmp);
 704                         pairxlatmove(request, &request->reply->vps, &reply_tmp);
 705                         pairxlatmove(request, &request->config_items, &check_tmp);
 706                 }
 707
 708                 /*
 709                  * Delete the Sql-Group we added above
 710                  * And clear out the pairlists
 711                  */
 712                 pairdelete(&request->packet->vps, PW_SQL_GROUP);
 713                 pairfree(&check_tmp);
 714                 pairfree(&reply_tmp);
 715         }
 716
 717         sql_grouplist_free(&group_list);
 718         return found;
 719 }
 720
 721
 722 static int rlm_sql_detach(void *instance)
 723 {
 724         SQL_INST *inst = instance;
 725
 726         paircompare_unregister(PW_SQL_GROUP, sql_groupcmp);
 727
 728         if (inst->config) {
 729                 int i;
 730
 731                 if (inst->sqlpool) {
 732                         sql_poolfree(inst);
 733                 }
 734
 735                 if (inst->config->xlat_name) {
 736                         xlat_unregister(inst->config->xlat_name,(RAD_XLAT_FUNC)sql_xlat);
 737                         free(inst->config->xlat_name);
 738                 }
 739
 740                 /*
 741                  *      Free up dynamically allocated string pointers.
 742                  */
 743                 for (i = 0; module_config[i].name != NULL; i++) {
 744                         char **p;
 745                         if (module_config[i].type != PW_TYPE_STRING_PTR) {
 746                                 continue;
 747                         }
 748
 749                         /*
 750                          *      Treat 'config' as an opaque array of bytes,
 751                          *      and take the offset into it.  There's a
 752                          *      (char*) pointer at that offset, and we want
 753                          *      to point to it.
 754                          */
 755                         p = (char **) (((char *)inst->config) + module_config[i].offset);
 756                         if (!*p) { /* nothing allocated */
 757                                 continue;
 758                         }
 759                         free(*p);
 760                         *p = NULL;
 761                 }
 762                 allowed_chars = NULL;
 763                 free(inst->config);
 764                 inst->config = NULL;
 765         }
 766
 767         if (inst->handle) {
 768 #if 0
 769                 /*
 770                  *      FIXME: Call the modules 'destroy' function?
 771                  */
 772                 lt_dlclose(inst->handle);       /* ignore any errors */
 773 #endif
 774         }
 775         free(inst);
 776
 777         return 0;
 778 }
 779 static int rlm_sql_instantiate(CONF_SECTION * conf, void **instance)
 780 {
 781         SQL_INST *inst;
 782         const char *xlat_name;
 783
 784         inst = rad_malloc(sizeof(SQL_INST));
 785         memset(inst, 0, sizeof(SQL_INST));
 786
 787         inst->config = rad_malloc(sizeof(SQL_CONFIG));
 788         memset(inst->config, 0, sizeof(SQL_CONFIG));
 789
 790         /*
 791          * If the configuration parameters can't be parsed, then
 792          * fail.
 793          */
 794         if (cf_section_parse(conf, inst->config, module_config) < 0) {
 795                 rlm_sql_detach(inst);
 796                 return -1;
 797         }
 798
 799         xlat_name = cf_section_name2(conf);
 800         if (xlat_name == NULL)
 801                 xlat_name = cf_section_name1(conf);
 802         if (xlat_name){
 803                 inst->config->xlat_name = strdup(xlat_name);
 804                 xlat_register(xlat_name, (RAD_XLAT_FUNC)sql_xlat, inst);
 805         }
 806
 807         if (inst->config->num_sql_socks > MAX_SQL_SOCKS) {
 808                 radlog(L_ERR | L_CONS, "rlm_sql (%s): sql_instantiate: number of sqlsockets cannot exceed MAX_SQL_SOCKS, %d",
 809                        inst->config->xlat_name, MAX_SQL_SOCKS);
 810                 rlm_sql_detach(inst);
 811                 return -1;
 812         }
 813
 814         /*
 815          *      Sanity check for crazy people.
 816          */
 817         if (strncmp(inst->config->sql_driver, "rlm_sql_", 8) != 0) {
 818                 radlog(L_ERR, "rlm_sql (%s): \"%s\" is NOT an SQL driver!",
 819                        inst->config->xlat_name, inst->config->sql_driver);
 820                 rlm_sql_detach(inst);
 821                 return -1;
 822         }
 823
 824         inst->handle = lt_dlopenext(inst->config->sql_driver);
 825         if (inst->handle == NULL) {
 826                 radlog(L_ERR, "rlm_sql (%s): Could not link driver %s: %s",
 827                        inst->config->xlat_name, inst->config->sql_driver,
 828                        lt_dlerror());
 829                 radlog(L_ERR, "rlm_sql (%s): Make sure it (and all its dependent libraries!) are in the search path of your system's ld.",
 830                        inst->config->xlat_name);
 831                 rlm_sql_detach(inst);
 832                 return -1;
 833         }
 834
 835         inst->module = (rlm_sql_module_t *) lt_dlsym(inst->handle, inst->config->sql_driver);
 836         if (!inst->module) {
 837                 radlog(L_ERR, "rlm_sql (%s): Could not link symbol %s: %s",
 838                        inst->config->xlat_name, inst->config->sql_driver,
 839                        lt_dlerror());
 840                 rlm_sql_detach(inst);
 841                 return -1;
 842         }
 843
 844         radlog(L_INFO, "rlm_sql (%s): Driver %s (module %s) loaded and linked",
 845                inst->config->xlat_name, inst->config->sql_driver,
 846                inst->module->name);
 847         radlog(L_INFO, "rlm_sql (%s): Attempting to connect to %s@%s:%s/%s",
 848                inst->config->xlat_name, inst->config->sql_login,
 849                inst->config->sql_server, inst->config->sql_port,
 850                inst->config->sql_db);
 851
 852         if (sql_init_socketpool(inst) < 0) {
 853                 rlm_sql_detach(inst);
 854                 return -1;
 855         }
 856         paircompare_register(PW_SQL_GROUP, PW_USER_NAME, sql_groupcmp, inst);
 857
 858         if (inst->config->do_clients){
 859                 if (generate_sql_clients(inst) == -1){
 860                         radlog(L_ERR, "rlm_sql (%s): generate_sql_clients() returned error",inst->config->xlat_name);
 861                         rlm_sql_detach(inst);
 862                         return -1;
 863                 }
 864         }
 865         allowed_chars = inst->config->allowed_chars;
 866
 867         *instance = inst;
 868
 869         return RLM_MODULE_OK;
 870 }
 871
 872
 873 static int rlm_sql_authorize(void *instance, REQUEST * request)
 874 {
 875         VALUE_PAIR *check_tmp = NULL;
 876         VALUE_PAIR *reply_tmp = NULL;
 877         VALUE_PAIR *user_profile = NULL;
 878         int     found = 0;
 879         int     dofallthrough = 1;
 880         int     rows;
 881         SQLSOCK *sqlsocket;
 882         SQL_INST *inst = instance;
 883         char    querystr[MAX_QUERY_LEN];
 884         char    sqlusername[MAX_STRING_LEN];
 885         /*
 886          * the profile username is used as the sqlusername during
 887          * profile checking so that we don't overwrite the orignal
 888          * sqlusername string
 889          */
 890         char   profileusername[MAX_STRING_LEN];
 891
 892         /*
 893          * Set, escape, and check the user attr here
 894          */
 895         if (sql_set_user(inst, request, sqlusername, NULL) < 0)
 896                 return RLM_MODULE_FAIL;
 897
 898
 899         /*
 900          * reserve a socket
 901          */
 902         sqlsocket = sql_get_socket(inst);
 903         if (sqlsocket == NULL) {
 904                 /* Remove the username we (maybe) added above */
 905                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 906                 return RLM_MODULE_FAIL;
 907         }
 908
 909
 910         /*
 911          *  After this point, ALL 'return's MUST release the SQL socket!
 912          */
 913
 914         /*
 915          * Alright, start by getting the specific entry for the user
 916          */
 917         if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_check_query, request, sql_escape_func)) {
 918                 radlog(L_ERR, "rlm_sql (%s): Error generating query; rejecting user",
 919                        inst->config->xlat_name);
 920                 sql_release_socket(inst, sqlsocket);
 921                 /* Remove the username we (maybe) added above */
 922                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 923                 return RLM_MODULE_FAIL;
 924         }
 925         rows = sql_getvpdata(inst, sqlsocket, &check_tmp, querystr);
 926         if (rows < 0) {
 927                 radlog(L_ERR, "rlm_sql (%s): SQL query error; rejecting user",
 928                        inst->config->xlat_name);
 929                 sql_release_socket(inst, sqlsocket);
 930                 /* Remove the username we (maybe) added above */
 931                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 932                 pairfree(&check_tmp);
 933                 return RLM_MODULE_FAIL;
 934         } else if (rows > 0) {
 935                 /*
 936                  *      Only do this if *some* check pairs were returned
 937                  */
 938                 if (paircompare(request, request->packet->vps, check_tmp, &request->reply->vps) == 0) {
 939                         found = 1;
 940                         DEBUG2("rlm_sql (%s): User found in radcheck table", inst->config->xlat_name);
 941                         /*
 942                          *      Now get the reply pairs since the paircompare matched
 943                          */
 944                         if (!radius_xlat(querystr, sizeof(querystr), inst->config->authorize_reply_query, request, sql_escape_func)) {
 945                                 radlog(L_ERR, "rlm_sql (%s): Error generating query; rejecting user",
 946                                        inst->config->xlat_name);
 947                                 sql_release_socket(inst, sqlsocket);
 948                                 /* Remove the username we (maybe) added above */
 949                                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 950                                 pairfree(&check_tmp);
 951                                 return RLM_MODULE_FAIL;
 952                         }
 953                         if (sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr) < 0) {
 954                                 radlog(L_ERR, "rlm_sql (%s): SQL query error; rejecting user",
 955                                        inst->config->xlat_name);
 956                                 sql_release_socket(inst, sqlsocket);
 957                                 /* Remove the username we (maybe) added above */
 958                                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 959                                 pairfree(&check_tmp);
 960                                 pairfree(&reply_tmp);
 961                                 return RLM_MODULE_FAIL;
 962                         }
 963                         if (!inst->config->read_groups)
 964                                 dofallthrough = fallthrough(reply_tmp);
 965                         pairxlatmove(request, &request->reply->vps, &reply_tmp);
 966                         pairxlatmove(request, &request->config_items, &check_tmp);
 967                 }
 968         }
 969
 970         /*
 971          *      Clear out the pairlists
 972          */
 973         pairfree(&check_tmp);
 974         pairfree(&reply_tmp);
 975
 976         /*
 977          *      dofallthrough is set to 1 by default so that if the user information
 978          *      is not found, we will still process groups.  If the user information,
 979          *      however, *is* found, Fall-Through must be set in order to process
 980          *      the groups as well
 981          */
 982         if (dofallthrough) {
 983                 rows = rlm_sql_process_groups(inst, request, sqlsocket, &dofallthrough);
 984                 if (rows < 0) {
 985                         radlog(L_ERR, "rlm_sql (%s): Error processing groups; rejecting user",
 986                                inst->config->xlat_name);
 987                         sql_release_socket(inst, sqlsocket);
 988                         /* Remove the username we (maybe) added above */
 989                         pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
 990                         return RLM_MODULE_FAIL;
 991                 } else if (rows > 0) {
 992                         found = 1;
 993                 }
 994         }
 995
 996         /*
 997          *      repeat the above process with the default profile or User-Profile
 998          */
 999         if (dofallthrough) {
1000                 int profile_found = 0;
1001                 /*
1002                 * Check for a default_profile or for a User-Profile.
1003                 */
1004                 user_profile = pairfind(request->config_items, PW_USER_PROFILE);
1005                 if (inst->config->default_profile[0] != 0 || user_profile != NULL){
1006                         char *profile = inst->config->default_profile;
1007
1008                         if (user_profile != NULL)
1009                                 profile = user_profile->vp_strvalue;
1010                         if (profile && strlen(profile)){
1011                                 radlog(L_DBG, "rlm_sql (%s): Checking profile %s",
1012                                        inst->config->xlat_name, profile);
1013                                 if (sql_set_user(inst, request, profileusername, profile) < 0) {
1014                                         radlog(L_ERR, "rlm_sql (%s): Error setting profile; rejecting user",
1015                                                inst->config->xlat_name);
1016                                         sql_release_socket(inst, sqlsocket);
1017                                         /* Remove the username we (maybe) added above */
1018                                         pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
1019                                         return RLM_MODULE_FAIL;
1020                                 } else {
1021                                         profile_found = 1;
1022                                 }
1023                         }
1024                 }
1025
1026                 if (profile_found) {
1027                         rows = rlm_sql_process_groups(inst, request, sqlsocket, &dofallthrough);
1028                         if (rows < 0) {
1029                                 radlog(L_ERR, "rlm_sql (%s): Error processing profile groups; rejecting user",
1030                                        inst->config->xlat_name);
1031                                 sql_release_socket(inst, sqlsocket);
1032                                 /* Remove the username we (maybe) added above */
1033                                 pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
1034                                 return RLM_MODULE_FAIL;
1035                         } else if (rows > 0) {
1036                                 found = 1;
1037                         }
1038                 }
1039         }
1040
1041         /* Remove the username we (maybe) added above */
1042         pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
1043         sql_release_socket(inst, sqlsocket);
1044
1045         if (!found) {
1046                 radlog(L_DBG, "rlm_sql (%s): User %s not found",
1047                        inst->config->xlat_name, sqlusername);
1048                 return RLM_MODULE_NOTFOUND;
1049         } else {
1050                 return RLM_MODULE_OK;
1051         }
1052 }
1053
1054 /*
1055  *      Accounting: save the account data to our sql table
1056  */
1057 static int rlm_sql_accounting(void *instance, REQUEST * request) {
1058
1059         SQLSOCK *sqlsocket = NULL;
1060         VALUE_PAIR *pair;
1061         SQL_INST *inst = instance;
1062         int     ret = RLM_MODULE_OK;
1063         int     numaffected = 0;
1064         int     acctstatustype = 0;
1065         char    querystr[MAX_QUERY_LEN];
1066         char    logstr[MAX_QUERY_LEN];
1067         char    sqlusername[MAX_STRING_LEN];
1068
1069 #ifdef CISCO_ACCOUNTING_HACK
1070         int     acctsessiontime = 0;
1071 #endif
1072
1073         memset(querystr, 0, MAX_QUERY_LEN);
1074
1075         /*
1076          * Find the Acct Status Type
1077          */
1078         if ((pair = pairfind(request->packet->vps, PW_ACCT_STATUS_TYPE)) != NULL) {
1079                 acctstatustype = pair->vp_integer;
1080         } else {
1081                 radius_xlat(logstr, sizeof(logstr), "packet has no accounting status type. [user '%{User-Name}', nas '%{NAS-IP-Address}']", request, NULL);
1082                 radlog(L_ERR, "rlm_sql (%s) in sql_accounting: %s",
1083                        inst->config->xlat_name, logstr);
1084                 return RLM_MODULE_INVALID;
1085         }
1086
1087         switch (acctstatustype) {
1088                         /*
1089                          * The Terminal server informed us that it was rebooted
1090                          * STOP all records from this NAS
1091                          */
1092                 case PW_STATUS_ACCOUNTING_ON:
1093                 case PW_STATUS_ACCOUNTING_OFF:
1094                         radlog(L_INFO, "rlm_sql (%s): received Acct On/Off packet", inst->config->xlat_name);
1095                         radius_xlat(querystr, sizeof(querystr), inst->config->accounting_onoff_query, request, sql_escape_func);
1096                         query_log(request, inst, querystr);
1097
1098                         sqlsocket = sql_get_socket(inst);
1099                         if (sqlsocket == NULL)
1100                                 return(RLM_MODULE_FAIL);
1101                         if (*querystr) { /* non-empty query */
1102                                 if (rlm_sql_query(sqlsocket, inst, querystr)) {
1103                                         radlog(L_ERR, "rlm_sql (%s): Couldn't update SQL accounting for Acct On/Off packet - %s",
1104                                                inst->config->xlat_name,
1105                                                (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1106                                         ret = RLM_MODULE_FAIL;
1107                                 }
1108                                 (inst->module->sql_finish_query)(sqlsocket, inst->config);
1109                         }
1110
1111                         break;
1112
1113                         /*
1114                          * Got an update accounting packet
1115                          */
1116                 case PW_STATUS_ALIVE:
1117
1118                         /*
1119                          * Set, escape, and check the user attr here
1120                          */
1121                         sql_set_user(inst, request, sqlusername, NULL);
1122
1123                         radius_xlat(querystr, sizeof(querystr), inst->config->accounting_update_query, request, sql_escape_func);
1124                         query_log(request, inst, querystr);
1125
1126                         sqlsocket = sql_get_socket(inst);
1127                         if (sqlsocket == NULL)
1128                                 return(RLM_MODULE_FAIL);
1129                         if (*querystr) { /* non-empty query */
1130                                 if (rlm_sql_query(sqlsocket, inst, querystr)) {
1131                                         radlog(L_ERR, "rlm_sql (%s): Couldn't update SQL accounting ALIVE record - %s",
1132                                                inst->config->xlat_name,
1133                                                (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1134                                         ret = RLM_MODULE_FAIL;
1135                                 }
1136                                 else {
1137                                         numaffected = (inst->module->sql_affected_rows)(sqlsocket, inst->config);
1138                                         if (numaffected < 1) {
1139
1140                                                 /*
1141                                                  * If our update above didn't match anything
1142                                                  * we assume it's because we haven't seen a
1143                                                  * matching Start record.  So we have to
1144                                                  * insert this update rather than do an update
1145                                                  */
1146                                                 radius_xlat(querystr, sizeof(querystr), inst->config->accounting_update_query_alt, request, sql_escape_func);
1147                                                 query_log(request, inst, querystr);
1148                                                 if (*querystr) { /* non-empty query */
1149                                                         if (rlm_sql_query(sqlsocket, inst, querystr)) {
1150                                                                 radlog(L_ERR, "rlm_sql (%s): Couldn't insert SQL accounting ALIVE record - %s",
1151                                                                            inst->config->xlat_name,
1152                                                                            (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1153                                                                 ret = RLM_MODULE_FAIL;
1154                                                         }
1155                                                         (inst->module->sql_finish_query)(sqlsocket, inst->config);
1156                                                 }
1157                                         }
1158                                 }
1159                                 (inst->module->sql_finish_query)(sqlsocket, inst->config);
1160                         }
1161                         break;
1162
1163                         /*
1164                          * Got accounting start packet
1165                          */
1166                 case PW_STATUS_START:
1167
1168                         /*
1169                          * Set, escape, and check the user attr here
1170                          */
1171                         sql_set_user(inst, request, sqlusername, NULL);
1172
1173                         radius_xlat(querystr, sizeof(querystr), inst->config->accounting_start_query, request, sql_escape_func);
1174                         query_log(request, inst, querystr);
1175
1176                         sqlsocket = sql_get_socket(inst);
1177                         if (sqlsocket == NULL)
1178                                 return(RLM_MODULE_FAIL);
1179                         if (*querystr) { /* non-empty query */
1180                                 if (rlm_sql_query(sqlsocket, inst, querystr)) {
1181                                         radlog(L_ERR, "rlm_sql (%s): Couldn't insert SQL accounting START record - %s",
1182                                                inst->config->xlat_name,
1183                                                (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1184
1185                                         /*
1186                                          * We failed the insert above.  It's probably because
1187                                          * the stop record came before the start.  We try
1188                                          * our alternate query now (typically an UPDATE)
1189                                          */
1190                                         radius_xlat(querystr, sizeof(querystr), inst->config->accounting_start_query_alt, request, sql_escape_func);
1191                                         query_log(request, inst, querystr);
1192
1193                                         if (*querystr) { /* non-empty query */
1194                                                 if (rlm_sql_query(sqlsocket, inst, querystr)) {
1195                                                         radlog(L_ERR, "rlm_sql (%s): Couldn't update SQL accounting START record - %s",
1196                                                                inst->config->xlat_name,
1197                                                                (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1198                                                         ret = RLM_MODULE_FAIL;
1199                                                 }
1200                                                 (inst->module->sql_finish_query)(sqlsocket, inst->config);
1201                                         }
1202                                 }
1203                                 (inst->module->sql_finish_query)(sqlsocket, inst->config);
1204                         }
1205                         break;
1206
1207                         /*
1208                          * Got accounting stop packet
1209                          */
1210                 case PW_STATUS_STOP:
1211
1212                         /*
1213                          * Set, escape, and check the user attr here
1214                          */
1215                         sql_set_user(inst, request, sqlusername, NULL);
1216
1217                         radius_xlat(querystr, sizeof(querystr), inst->config->accounting_stop_query, request, sql_escape_func);
1218                         query_log(request, inst, querystr);
1219
1220                         sqlsocket = sql_get_socket(inst);
1221                         if (sqlsocket == NULL)
1222                                 return(RLM_MODULE_FAIL);
1223                         if (*querystr) { /* non-empty query */
1224                                 if (rlm_sql_query(sqlsocket, inst, querystr)) {
1225                                         radlog(L_ERR, "rlm_sql (%s): Couldn't update SQL accounting STOP record - %s",
1226                                                inst->config->xlat_name,
1227                                                (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1228                                         ret = RLM_MODULE_FAIL;
1229                                 }
1230                                 else {
1231                                         numaffected = (inst->module->sql_affected_rows)(sqlsocket, inst->config);
1232                                         if (numaffected < 1) {
1233                                                 /*
1234                                                  * If our update above didn't match anything
1235                                                  * we assume it's because we haven't seen a
1236                                                  * matching Start record.  So we have to
1237                                                  * insert this stop rather than do an update
1238                                                  */
1239 #ifdef CISCO_ACCOUNTING_HACK
1240                                                 /*
1241                                                  * If stop but zero session length AND no previous
1242                                                  * session found, drop it as in invalid packet
1243                                                  * This is to fix CISCO's aaa from filling our
1244                                                  * table with bogus crap
1245                                                  */
1246                                                 if ((pair = pairfind(request->packet->vps, PW_ACCT_SESSION_TIME)) != NULL)
1247                                                         acctsessiontime = pair->vp_integer;
1248
1249                                                 if (acctsessiontime <= 0) {
1250                                                         radius_xlat(logstr, sizeof(logstr), "stop packet with zero session length. [user '%{User-Name}', nas '%{NAS-IP-Address}']", request, NULL);
1251                                                         radlog(L_ERR, "rlm_sql (%s) in sql_accounting: %s", inst->config->xlat_name, logstr);
1252                                                         sql_release_socket(inst, sqlsocket);
1253                                                         ret = RLM_MODULE_NOOP;
1254                                                 }
1255 #endif
1256
1257                                                 radius_xlat(querystr, sizeof(querystr), inst->config->accounting_stop_query_alt, request, sql_escape_func);
1258                                                 query_log(request, inst, querystr);
1259
1260                                                 if (*querystr) { /* non-empty query */
1261                                                         if (rlm_sql_query(sqlsocket, inst, querystr)) {
1262                                                                 radlog(L_ERR, "rlm_sql (%s): Couldn't insert SQL accounting STOP record - %s",
1263                                                                                 inst->config->xlat_name,
1264                                                                                 (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1265                                                                 ret = RLM_MODULE_FAIL;
1266                                                         }
1267                                                         (inst->module->sql_finish_query)(sqlsocket, inst->config);
1268                                                 }
1269                                         }
1270                                 }
1271                                 (inst->module->sql_finish_query)(sqlsocket, inst->config);
1272                         }
1273                         break;
1274
1275                         /*
1276                          *      Anything else is ignored.
1277                          */
1278                 default:
1279                         radlog(L_INFO, "rlm_sql (%s): Unsupported Acct-Status-Type = %d", inst->config->xlat_name, acctstatustype);
1280                         return RLM_MODULE_NOOP;
1281                         break;
1282
1283         }
1284
1285         sql_release_socket(inst, sqlsocket);
1286
1287         return ret;
1288 }
1289
1290
1291 /*
1292  *        See if a user is already logged in. Sets request->simul_count to the
1293  *        current session count for this user.
1294  *
1295  *        Check twice. If on the first pass the user exceeds his
1296  *        max. number of logins, do a second pass and validate all
1297  *        logins by querying the terminal server (using eg. SNMP).
1298  */
1299
1300 static int rlm_sql_checksimul(void *instance, REQUEST * request) {
1301         SQLSOCK         *sqlsocket;
1302         SQL_INST        *inst = instance;
1303         SQL_ROW         row;
1304         char            querystr[MAX_QUERY_LEN];
1305         char            sqlusername[MAX_STRING_LEN];
1306         int             check = 0;
1307         uint32_t        ipno = 0;
1308         char            *call_num = NULL;
1309         VALUE_PAIR      *vp;
1310         int             ret;
1311         uint32_t        nas_addr = 0;
1312         int             nas_port = 0;
1313
1314         /* If simul_count_query is not defined, we don't do any checking */
1315         if (inst->config->simul_count_query[0] == 0) {
1316                 return RLM_MODULE_NOOP;
1317         }
1318
1319         if((request->username == NULL) || (request->username->length == 0)) {
1320                 radlog(L_ERR, "rlm_sql (%s): Zero Length username not permitted\n", inst->config->xlat_name);
1321                 return RLM_MODULE_INVALID;
1322         }
1323
1324
1325         if(sql_set_user(inst, request, sqlusername, NULL) < 0)
1326                 return RLM_MODULE_FAIL;
1327
1328         radius_xlat(querystr, sizeof(querystr), inst->config->simul_count_query, request, sql_escape_func);
1329
1330         /* initialize the sql socket */
1331         sqlsocket = sql_get_socket(inst);
1332         if(sqlsocket == NULL)
1333                 return RLM_MODULE_FAIL;
1334
1335         if(rlm_sql_select_query(sqlsocket, inst, querystr)) {
1336                 radlog(L_ERR, "rlm_sql (%s) sql_checksimul: Database query failed", inst->config->xlat_name);
1337                 sql_release_socket(inst, sqlsocket);
1338                 return RLM_MODULE_FAIL;
1339         }
1340
1341         ret = rlm_sql_fetch_row(sqlsocket, inst);
1342
1343         if (ret != 0) {
1344                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1345                 sql_release_socket(inst, sqlsocket);
1346                 return RLM_MODULE_FAIL;
1347         }
1348
1349         row = sqlsocket->row;
1350         if (row == NULL) {
1351                 (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1352                 sql_release_socket(inst, sqlsocket);
1353                 return RLM_MODULE_FAIL;
1354         }
1355
1356         request->simul_count = atoi(row[0]);
1357         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1358
1359         if(request->simul_count < request->simul_max) {
1360                 sql_release_socket(inst, sqlsocket);
1361                 return RLM_MODULE_OK;
1362         }
1363
1364         /*
1365          *      Looks like too many sessions, so let's start verifying
1366          *      them, unless told to rely on count query only.
1367          */
1368         if (inst->config->simul_verify_query[0] == '\0') {
1369                 sql_release_socket(inst, sqlsocket);
1370                 return RLM_MODULE_OK;
1371         }
1372
1373         radius_xlat(querystr, sizeof(querystr), inst->config->simul_verify_query, request, sql_escape_func);
1374         if(rlm_sql_select_query(sqlsocket, inst, querystr)) {
1375                 radlog(L_ERR, "rlm_sql (%s): sql_checksimul: Database query error", inst->config->xlat_name);
1376                 sql_release_socket(inst, sqlsocket);
1377                 return RLM_MODULE_FAIL;
1378         }
1379
1380         /*
1381          *      Setup some stuff, like for MPP detection.
1382          */
1383         request->simul_count = 0;
1384
1385         if ((vp = pairfind(request->packet->vps, PW_FRAMED_IP_ADDRESS)) != NULL)
1386                 ipno = vp->vp_ipaddr;
1387         if ((vp = pairfind(request->packet->vps, PW_CALLING_STATION_ID)) != NULL)
1388                 call_num = vp->vp_strvalue;
1389
1390
1391         while (rlm_sql_fetch_row(sqlsocket, inst) == 0) {
1392                 row = sqlsocket->row;
1393                 if (row == NULL)
1394                         break;
1395                 if (!row[2]){
1396                         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1397                         sql_release_socket(inst, sqlsocket);
1398                         DEBUG("rlm_sql (%s): Cannot zap stale entry. No username present in entry.", inst->config->xlat_name);
1399                         return RLM_MODULE_FAIL;
1400                 }
1401                 if (!row[1]){
1402                         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1403                         sql_release_socket(inst, sqlsocket);
1404                         DEBUG("rlm_sql (%s): Cannot zap stale entry. No session id in entry.", inst->config->xlat_name);
1405                         return RLM_MODULE_FAIL;
1406                 }
1407                 if (row[3])
1408                         nas_addr = inet_addr(row[3]);
1409                 if (row[4])
1410                         nas_port = atoi(row[4]);
1411
1412                 check = rad_check_ts(nas_addr, nas_port, row[2], row[1]);
1413
1414                 if (check == 0) {
1415                         /*
1416                          *      Stale record - zap it.
1417                          */
1418                         if (inst->config->deletestalesessions == TRUE) {
1419                                 uint32_t framed_addr = 0;
1420                                 char proto = 0;
1421                                 int sess_time = 0;
1422
1423                                 if (row[5])
1424                                         framed_addr = inet_addr(row[5]);
1425                                 if (row[7]){
1426                                         if (strcmp(row[7], "PPP") == 0)
1427                                                 proto = 'P';
1428                                         else if (strcmp(row[7], "SLIP") == 0)
1429                                                 proto = 'S';
1430                                 }
1431                                 if (row[8])
1432                                         sess_time = atoi(row[8]);
1433                                 session_zap(request, nas_addr, nas_port,
1434                                             row[2], row[1], framed_addr,
1435                                             proto, sess_time);
1436                         }
1437                 }
1438                 else if (check == 1) {
1439                         /*
1440                          *      User is still logged in.
1441                          */
1442                         ++request->simul_count;
1443
1444                         /*
1445                          *      Does it look like a MPP attempt?
1446                          */
1447                         if (row[5] && ipno && inet_addr(row[5]) == ipno)
1448                                 request->simul_mpp = 2;
1449                         else if (row[6] && call_num &&
1450                                 !strncmp(row[6],call_num,16))
1451                                 request->simul_mpp = 2;
1452                 }
1453                 else {
1454                         /*
1455                          *      Failed to check the terminal server for
1456                          *      duplicate logins: return an error.
1457                          */
1458                         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1459                         sql_release_socket(inst, sqlsocket);
1460                         radlog(L_ERR, "rlm_sql (%s): sql_checksimul: Failed to check the terminal server for user '%s'.", inst->config->xlat_name, row[2]);
1461                         return RLM_MODULE_FAIL;
1462                 }
1463         }
1464
1465         (inst->module->sql_finish_select_query)(sqlsocket, inst->config);
1466         sql_release_socket(inst, sqlsocket);
1467
1468         /*
1469          *      The Auth module apparently looks at request->simul_count,
1470          *      not the return value of this module when deciding to deny
1471          *      a call for too many sessions.
1472          */
1473         return RLM_MODULE_OK;
1474 }
1475
1476 /*
1477  *      Execute postauth_query after authentication
1478  */
1479 static int rlm_sql_postauth(void *instance, REQUEST *request) {
1480         SQLSOCK         *sqlsocket = NULL;
1481         SQL_INST        *inst = instance;
1482         char            querystr[MAX_QUERY_LEN];
1483         char            sqlusername[MAX_STRING_LEN];
1484
1485         DEBUG("rlm_sql (%s): Processing sql_postauth", inst->config->xlat_name);
1486
1487         if(sql_set_user(inst, request, sqlusername, NULL) < 0)
1488                 return RLM_MODULE_FAIL;
1489
1490         /* If postauth_query is not defined, we stop here */
1491         if (inst->config->postauth_query[0] == '\0')
1492                 return RLM_MODULE_NOOP;
1493
1494         /* Expand variables in the query */
1495         memset(querystr, 0, MAX_QUERY_LEN);
1496         radius_xlat(querystr, sizeof(querystr), inst->config->postauth_query,
1497                     request, sql_escape_func);
1498         query_log(request, inst, querystr);
1499         DEBUG2("rlm_sql (%s) in sql_postauth: query is %s",
1500                inst->config->xlat_name, querystr);
1501
1502         /* Initialize the sql socket */
1503         sqlsocket = sql_get_socket(inst);
1504         if (sqlsocket == NULL)
1505                 return RLM_MODULE_FAIL;
1506
1507         /* Process the query */
1508         if (rlm_sql_query(sqlsocket, inst, querystr)) {
1509                 radlog(L_ERR, "rlm_sql (%s) in sql_postauth: Database query error - %s",
1510                        inst->config->xlat_name,
1511                        (char *)(inst->module->sql_error)(sqlsocket, inst->config));
1512                 sql_release_socket(inst, sqlsocket);
1513                 return RLM_MODULE_FAIL;
1514         }
1515         (inst->module->sql_finish_query)(sqlsocket, inst->config);
1516
1517         sql_release_socket(inst, sqlsocket);
1518         return RLM_MODULE_OK;
1519 }
1520
1521 /* globally exported name */
1522 module_t rlm_sql = {
1523         RLM_MODULE_INIT,
1524         "SQL",
1525         RLM_TYPE_THREAD_SAFE,   /* type: reserved */
1526         rlm_sql_instantiate,    /* instantiation */
1527         rlm_sql_detach,         /* detach */
1528         {
1529                 NULL,                   /* authentication */
1530                 rlm_sql_authorize,      /* authorization */
1531                 NULL,                   /* preaccounting */
1532                 rlm_sql_accounting,     /* accounting */
1533                 rlm_sql_checksimul,     /* checksimul */
1534                 NULL,                   /* pre-proxy */
1535                 NULL,                   /* post-proxy */
1536                 rlm_sql_postauth        /* post-auth */
1537         },
1538 };