src/modules/rlm_perl/rlm_perl.c

   1 /*
   2  *   This program is is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License, version 2 if the
   4  *   License as published by the Free Software Foundation.
   5  *
   6  *   This program is distributed in the hope that it will be useful,
   7  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *   GNU General Public License for more details.
  10  *
  11  *   You should have received a copy of the GNU General Public License
  12  *   along with this program; if not, write to the Free Software
  13  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  14  */
  15
  16 /**
  17  * $Id$
  18  * @file rlm_perl.c
  19  * @brief Translates requests between the server an a perl interpreter.
  20  *
  21  * @copyright 2002,2006  The FreeRADIUS server project
  22  * @copyright 2002  Boian Jordanov <bjordanov@orbitel.bg>
  23  */
  24 RCSID("$Id$")
  25
  26 #include <freeradius-devel/radiusd.h>
  27 #include <freeradius-devel/modules.h>
  28 #include <freeradius-devel/rad_assert.h>
  29
  30 #ifdef INADDR_ANY
  31 #undef INADDR_ANY
  32 #endif
  33 #include <EXTERN.h>
  34 #include <perl.h>
  35 #include <XSUB.h>
  36 #include <dlfcn.h>
  37 #include <semaphore.h>
  38
  39 #ifdef __APPLE__
  40 extern char **environ;
  41 #endif
  42
  43 /*
  44  *      Define a structure for our module configuration.
  45  *
  46  *      These variables do not need to be in a structure, but it's
  47  *      a lot cleaner to do so, and a pointer to the structure can
  48  *      be used as the instance handle.
  49  */
  50 typedef struct rlm_perl_t {
  51         /* Name of the perl module */
  52         char    *module;
  53
  54         /* Name of the functions for each module method */
  55         char    *func_authorize;
  56         char    *func_authenticate;
  57         char    *func_accounting;
  58         char    *func_start_accounting;
  59         char    *func_stop_accounting;
  60         char    *func_preacct;
  61         char    *func_checksimul;
  62         char    *func_detach;
  63         char    *func_xlat;
  64 #ifdef WITH_PROXY
  65         char    *func_pre_proxy;
  66         char    *func_post_proxy;
  67 #endif
  68         char    *func_post_auth;
  69 #ifdef WITH_COA
  70         char    *func_recv_coa;
  71         char    *func_send_coa;
  72 #endif
  73         char    *xlat_name;
  74         char    *perl_flags;
  75         PerlInterpreter *perl;
  76         pthread_key_t   *thread_key;
  77
  78 #ifdef USE_ITHREADS
  79         pthread_mutex_t clone_mutex;
  80 #endif
  81 } rlm_perl_t;
  82 /*
  83  *      A mapping of configuration file names to internal variables.
  84  */
  85 #define RLM_PERL_CONF(_x) { "func_" STRINGIFY(_x), PW_TYPE_STRING_PTR, \
  86                         offsetof(rlm_perl_t,func_##_x), NULL, STRINGIFY(_x)}
  87
  88 static const CONF_PARSER module_config[] = {
  89         { "module",  PW_TYPE_FILE_INPUT | PW_TYPE_DEPRECATED,
  90           offsetof(rlm_perl_t,module), NULL,  NULL},
  91         { "filename",  PW_TYPE_FILE_INPUT | PW_TYPE_REQUIRED,
  92           offsetof(rlm_perl_t,module), NULL,  NULL},
  93
  94         RLM_PERL_CONF(authorize),
  95         RLM_PERL_CONF(authenticate),
  96         RLM_PERL_CONF(post_auth),
  97         RLM_PERL_CONF(accounting),
  98         RLM_PERL_CONF(preacct),
  99         RLM_PERL_CONF(checksimul),
 100         RLM_PERL_CONF(detach),
 101         RLM_PERL_CONF(xlat),
 102
 103 #ifdef WITH_PROXY
 104         RLM_PERL_CONF(pre_proxy),
 105         RLM_PERL_CONF(post_proxy),
 106 #endif
 107 #ifdef WITH_COA
 108         RLM_PERL_CONF(recv_coa),
 109         RLM_PERL_CONF(send_coa),
 110 #endif
 111         { "perl_flags", PW_TYPE_STRING_PTR,
 112           offsetof(rlm_perl_t,perl_flags), NULL, NULL},
 113
 114         { "func_start_accounting", PW_TYPE_STRING_PTR,
 115           offsetof(rlm_perl_t,func_start_accounting), NULL, NULL},
 116
 117         { "func_stop_accounting", PW_TYPE_STRING_PTR,
 118           offsetof(rlm_perl_t,func_stop_accounting), NULL, NULL},
 119
 120         { NULL, -1, 0, NULL, NULL }             /* end the list */
 121 };
 122
 123 /*
 124  * man perlembed
 125  */
 126 EXTERN_C void boot_DynaLoader(pTHX_ CV* cv);
 127
 128 #ifdef USE_ITHREADS
 129 #define dl_librefs "DynaLoader::dl_librefs"
 130 #define dl_modules "DynaLoader::dl_modules"
 131 static void rlm_perl_clear_handles(pTHX)
 132 {
 133         AV *librefs = get_av(dl_librefs, false);
 134         if (librefs) {
 135                 av_clear(librefs);
 136         }
 137 }
 138
 139 static void **rlm_perl_get_handles(pTHX)
 140 {
 141         I32 i;
 142         AV *librefs = get_av(dl_librefs, false);
 143         AV *modules = get_av(dl_modules, false);
 144         void **handles;
 145
 146         if (!librefs) return NULL;
 147
 148         if (!(AvFILL(librefs) >= 0)) {
 149                 return NULL;
 150         }
 151
 152         handles = (void **)rad_malloc(sizeof(void *) * (AvFILL(librefs)+2));
 153
 154         for (i=0; i<=AvFILL(librefs); i++) {
 155                 void *handle;
 156                 SV *handle_sv = *av_fetch(librefs, i, false);
 157
 158                 if(!handle_sv) {
 159                         ERROR("Could not fetch $%s[%d]!\n",
 160                                dl_librefs, (int)i);
 161                         continue;
 162                 }
 163                 handle = (void *)SvIV(handle_sv);
 164
 165                 if (handle) {
 166                         handles[i] = handle;
 167                 }
 168         }
 169
 170         av_clear(modules);
 171         av_clear(librefs);
 172
 173         handles[i] = (void *)0;
 174
 175         return handles;
 176 }
 177
 178 static void rlm_perl_close_handles(void **handles)
 179 {
 180         int i;
 181
 182         if (!handles) {
 183                 return;
 184         }
 185
 186         for (i=0; handles[i]; i++) {
 187                 DEBUG("close %p\n", handles[i]);
 188                 dlclose(handles[i]);
 189         }
 190
 191         free(handles);
 192 }
 193
 194 DIAG_OFF(shadow)
 195 static void rlm_perl_destruct(PerlInterpreter *perl)
 196 {
 197         dTHXa(perl);
 198
 199         PERL_SET_CONTEXT(perl);
 200
 201         PL_perl_destruct_level = 2;
 202
 203         PL_origenviron = environ;
 204
 205
 206         {
 207                 dTHXa(perl);
 208         }
 209         /*
 210          * FIXME: This shouldn't happen
 211          *
 212          */
 213         while (PL_scopestack_ix > 1 ){
 214                 LEAVE;
 215         }
 216
 217         perl_destruct(perl);
 218         perl_free(perl);
 219 }
 220 DIAG_ON(shadow)
 221
 222 static void rlm_destroy_perl(PerlInterpreter *perl)
 223 {
 224         void    **handles;
 225
 226         dTHXa(perl);
 227         PERL_SET_CONTEXT(perl);
 228
 229         handles = rlm_perl_get_handles(aTHX);
 230         if (handles) rlm_perl_close_handles(handles);
 231         rlm_perl_destruct(perl);
 232 }
 233
 234 /* Create Key */
 235 static void rlm_perl_make_key(pthread_key_t *key)
 236 {
 237         pthread_key_create(key, (void*)rlm_destroy_perl);
 238 }
 239
 240 static PerlInterpreter *rlm_perl_clone(PerlInterpreter *perl, pthread_key_t *key)
 241 {
 242         int ret;
 243
 244         PerlInterpreter *interp;
 245         UV clone_flags = 0;
 246
 247         PERL_SET_CONTEXT(perl);
 248
 249         interp = pthread_getspecific(*key);
 250         if (interp) return interp;
 251
 252         interp = perl_clone(perl, clone_flags);
 253         {
 254                 dTHXa(interp);
 255         }
 256 #if PERL_REVISION >= 5 && PERL_VERSION <8
 257         call_pv("CLONE",0);
 258 #endif
 259         ptr_table_free(PL_ptr_table);
 260         PL_ptr_table = NULL;
 261
 262         PERL_SET_CONTEXT(aTHX);
 263         rlm_perl_clear_handles(aTHX);
 264
 265         ret = pthread_setspecific(*key, interp);
 266         if (ret != 0) {
 267                 DEBUG("rlm_perl: Failed associating interpretor with thread %s", fr_syserror(ret));
 268
 269                 rlm_perl_destruct(interp);
 270                 return NULL;
 271         }
 272
 273         return interp;
 274 }
 275 #endif
 276
 277 /*
 278  *
 279  * This is wrapper for radlog
 280  * Now users can call radiusd::radlog(level,msg) wich is the same
 281  * calling radlog from C code.
 282  * Boyan
 283  */
 284 static XS(XS_radiusd_radlog)
 285 {
 286         dXSARGS;
 287         if (items !=2)
 288                 croak("Usage: radiusd::radlog(level, message)");
 289         {
 290                 int     level;
 291                 char    *msg;
 292
 293                 level = (int) SvIV(ST(0));
 294                 msg   = (char *) SvPV(ST(1), PL_na);
 295
 296                 /*
 297                  *      Because 'msg' is a 'char *', we don't want '%s', etc.
 298                  *      in it to give us printf-style vulnerabilities.
 299                  */
 300                 radlog(level, "rlm_perl: %s", msg);
 301         }
 302         XSRETURN_NO;
 303 }
 304
 305 static void xs_init(pTHX)
 306 {
 307         char const *file = __FILE__;
 308
 309         /* DynaLoader is a special case */
 310         newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
 311
 312         newXS("radiusd::radlog",XS_radiusd_radlog, "rlm_perl");
 313 }
 314
 315 /*
 316  * The xlat function
 317  */
 318 static ssize_t perl_xlat(void *instance, REQUEST *request, char const *fmt, char *out, size_t freespace)
 319 {
 320
 321         rlm_perl_t      *inst= (rlm_perl_t *) instance;
 322         char            *tmp;
 323         char const      *p, *q;
 324         int             count;
 325         size_t          ret = 0;
 326         STRLEN          n_a;
 327
 328 #ifdef USE_ITHREADS
 329         PerlInterpreter *interp;
 330
 331         pthread_mutex_lock(&inst->clone_mutex);
 332         interp = rlm_perl_clone(inst->perl, inst->thread_key);
 333         {
 334                 dTHXa(interp);
 335                 PERL_SET_CONTEXT(interp);
 336         }
 337         pthread_mutex_unlock(&inst->clone_mutex);
 338 #else
 339         PERL_SET_CONTEXT(inst->perl);
 340 #endif
 341         {
 342                 dSP;
 343                 ENTER;SAVETMPS;
 344
 345                 PUSHMARK(SP);
 346
 347                 p = fmt;
 348                 while ((q = strchr(p, ' '))) {
 349                         XPUSHs(sv_2mortal(newSVpv(p, p - q)));
 350
 351                         p = q + 1;
 352                 }
 353
 354                 PUTBACK;
 355
 356                 count = call_pv(inst->func_xlat, G_SCALAR | G_EVAL);
 357
 358                 SPAGAIN;
 359                 if (SvTRUE(ERRSV)) {
 360                         REDEBUG("Exit %s", SvPV(ERRSV,n_a));
 361                         (void)POPs;
 362                 } else if (count > 0) {
 363                         tmp = POPp;
 364                         strlcpy(out, tmp, freespace);
 365                         ret = strlen(out);
 366
 367                         RDEBUG("Len is %zu , out is %s freespace is %zu", ret, out, freespace);
 368                 }
 369
 370                 PUTBACK ;
 371                 FREETMPS ;
 372                 LEAVE ;
 373
 374         }
 375
 376         return ret;
 377 }
 378 /*
 379  *      Do any per-module initialization that is separate to each
 380  *      configured instance of the module.  e.g. set up connections
 381  *      to external databases, read configuration files, set up
 382  *      dictionary entries, etc.
 383  *
 384  *      If configuration information is given in the config section
 385  *      that must be referenced in later calls, store a handle to it
 386  *      in *instance otherwise put a null pointer there.
 387  *
 388  *      Boyan:
 389  *      Setup a hashes wich we will use later
 390  *      parse a module and give him a chance to live
 391  *
 392  */
 393 static int mod_instantiate(CONF_SECTION *conf, void *instance)
 394 {
 395         rlm_perl_t       *inst = instance;
 396         AV              *end_AV;
 397
 398         char **embed;
 399         char **envp = NULL;
 400         char const *xlat_name;
 401         int exitstatus = 0, argc=0;
 402
 403         MEM(embed = talloc_zero_array(inst, char *, 4));
 404
 405         /*
 406          *      Create pthread key. This key will be stored in instance
 407          */
 408
 409 #ifdef USE_ITHREADS
 410         pthread_mutex_init(&inst->clone_mutex, NULL);
 411
 412         inst->thread_key = rad_malloc(sizeof(*inst->thread_key));
 413         memset(inst->thread_key,0,sizeof(*inst->thread_key));
 414
 415         rlm_perl_make_key(inst->thread_key);
 416 #endif
 417
 418         char arg[] = "0";
 419
 420         embed[0] = NULL;
 421         if (inst->perl_flags) {
 422                 embed[1] = inst->perl_flags;
 423                 embed[2] = inst->module;
 424                 embed[3] = arg;
 425                 argc = 4;
 426         } else {
 427                 embed[1] = inst->module;
 428                 embed[2] = arg;
 429                 argc = 3;
 430         }
 431
 432         PERL_SYS_INIT3(&argc, &embed, &envp);
 433
 434         if ((inst->perl = perl_alloc()) == NULL) {
 435                 ERROR("rlm_perl: No memory for allocating new perl !");
 436                 return (-1);
 437         }
 438
 439         perl_construct(inst->perl);
 440
 441 #ifdef USE_ITHREADS
 442         PL_perl_destruct_level = 2;
 443
 444         {
 445                 dTHXa(inst->perl);
 446         }
 447         PERL_SET_CONTEXT(inst->perl);
 448 #endif
 449
 450 #if PERL_REVISION >= 5 && PERL_VERSION >=8
 451         PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
 452 #endif
 453
 454         exitstatus = perl_parse(inst->perl, xs_init, argc, embed, NULL);
 455
 456         end_AV = PL_endav;
 457         PL_endav = Nullav;
 458
 459         if(!exitstatus) {
 460                 perl_run(inst->perl);
 461         } else {
 462                 ERROR("rlm_perl: perl_parse failed: %s not found or has syntax errors. \n", inst->module);
 463                 return (-1);
 464         }
 465
 466         PL_endav = end_AV;
 467
 468         xlat_name = cf_section_name2(conf);
 469         if (!xlat_name)
 470                 xlat_name = cf_section_name1(conf);
 471         if (xlat_name) {
 472                 xlat_register(xlat_name, perl_xlat, NULL, inst);
 473         }
 474
 475         return 0;
 476 }
 477
 478 /*
 479  *      get the vps and put them in perl hash
 480  *      If one VP have multiple values it is added as array_ref
 481  *      Example for this is Cisco-AVPair that holds multiple values.
 482  *      Which will be available as array_ref in $RAD_REQUEST{'Cisco-AVPair'}
 483  */
 484 static void perl_store_vps(TALLOC_CTX *ctx, VALUE_PAIR *vps, HV *rad_hv)
 485 {
 486         VALUE_PAIR *head, *sublist;
 487         AV *av;
 488         char const *name;
 489         char namebuf[256];
 490         char buffer[1024];
 491         int len;
 492
 493         hv_undef(rad_hv);
 494
 495         /*
 496          *      Copy the valuepair list so we can remove attributes
 497          *      we've already processed.  This is a horrible hack to
 498          *      get around various other stupidity.
 499          */
 500         head = paircopy(ctx, vps);
 501
 502         while (head) {
 503                 vp_cursor_t cursor;
 504                 /*
 505                  *      Tagged attributes are added to the hash with name
 506                  *      <attribute>:<tag>, others just use the normal attribute
 507                  *      name as the key.
 508                  */
 509                 if (head->da->flags.has_tag && (head->tag != 0)) {
 510                         snprintf(namebuf, sizeof(namebuf), "%s:%d",
 511                                  head->da->name, head->tag);
 512                         name = namebuf;
 513                 } else {
 514                         name = head->da->name;
 515                 }
 516
 517                 /*
 518                  *      Create a new list with all the attributes like this one
 519                  *      which are in the same tag group.
 520                  */
 521                 sublist = NULL;
 522                 pairfilter(ctx, &sublist, &head, head->da->attr, head->da->vendor, head->tag);
 523
 524                 fr_cursor_init(&cursor, &sublist);
 525                 /*
 526                  *      Attribute has multiple values
 527                  */
 528                 if (fr_cursor_next(&cursor)) {
 529                         VALUE_PAIR *vp;
 530
 531                         av = newAV();
 532                         for (vp = fr_cursor_first(&cursor);
 533                              vp;
 534                              vp = fr_cursor_next(&cursor)) {
 535                                 len = vp_prints_value(buffer, sizeof(buffer), vp, 0);
 536                                 av_push(av, newSVpv(buffer, len));
 537                         }
 538                         (void)hv_store(rad_hv, name, strlen(name), newRV_noinc((SV *)av), 0);
 539
 540                         /*
 541                          *      Attribute has a single value, so its value just gets
 542                          *      added to the hash.
 543                          */
 544                 } else {
 545                         len = vp_prints_value(buffer, sizeof(buffer), sublist, 0);
 546                         (void)hv_store(rad_hv, name, strlen(name), newSVpv(buffer, len), 0);
 547                 }
 548
 549                 pairfree(&sublist);
 550         }
 551
 552         rad_assert(!head);
 553 }
 554
 555 /*
 556  *
 557  *     Verify that a Perl SV is a string and save it in FreeRadius
 558  *     Value Pair Format
 559  *
 560  */
 561 static int pairadd_sv(TALLOC_CTX *ctx, VALUE_PAIR **vps, char *key, SV *sv, FR_TOKEN op)
 562 {
 563         char        *val;
 564         VALUE_PAIR      *vp;
 565
 566         if (SvOK(sv)) {
 567                 val = SvPV_nolen(sv);
 568                 vp = pairmake(ctx, vps, key, val, op);
 569                 if (vp != NULL) {
 570                         DEBUG("rlm_perl: Added pair %s = %s", key, val);
 571                         return 1;
 572                 } else {
 573                         EDEBUG("rlm_perl: Failed to create pair %s = %s", key, val);
 574                 }
 575         }
 576         return 0;
 577 }
 578
 579 /*
 580  *     Boyan :
 581  *     Gets the content from hashes
 582  */
 583 static int get_hv_content(TALLOC_CTX *ctx, HV *my_hv, VALUE_PAIR **vps)
 584 {
 585         SV              *res_sv, **av_sv;
 586         AV              *av;
 587         char            *key;
 588         I32             key_len, len, i, j;
 589         int             ret=0;
 590
 591         *vps = NULL;
 592         for (i = hv_iterinit(my_hv); i > 0; i--) {
 593                 res_sv = hv_iternextsv(my_hv,&key,&key_len);
 594                 if (SvROK(res_sv) && (SvTYPE(SvRV(res_sv)) == SVt_PVAV)) {
 595                         av = (AV*)SvRV(res_sv);
 596                         len = av_len(av);
 597                         for (j = 0; j <= len; j++) {
 598                                 av_sv = av_fetch(av, j, 0);
 599                                 ret = pairadd_sv(ctx, vps, key, *av_sv, T_OP_ADD) + ret;
 600                         }
 601                 } else ret = pairadd_sv(ctx, vps, key, res_sv, T_OP_EQ) + ret;
 602         }
 603
 604         return ret;
 605 }
 606
 607 /*
 608  *      Call the function_name inside the module
 609  *      Store all vps in hashes %RAD_CHECK %RAD_REPLY %RAD_REQUEST
 610  *
 611  */
 612 static int do_perl(void *instance, REQUEST *request, char *function_name)
 613 {
 614
 615         rlm_perl_t      *inst = instance;
 616         VALUE_PAIR      *vp;
 617         int             exitstatus=0, count;
 618         STRLEN          n_a;
 619
 620         HV              *rad_reply_hv;
 621         HV              *rad_check_hv;
 622         HV              *rad_config_hv;
 623         HV              *rad_request_hv;
 624 #ifdef WITH_PROXY
 625         HV              *rad_request_proxy_hv;
 626         HV              *rad_request_proxy_reply_hv;
 627 #endif
 628
 629         /*
 630          *      Radius has told us to call this function, but none
 631          *      is defined.
 632          */
 633         if (!function_name) return RLM_MODULE_FAIL;
 634
 635 #ifdef USE_ITHREADS
 636         pthread_mutex_lock(&inst->clone_mutex);
 637
 638         PerlInterpreter *interp;
 639
 640         interp = rlm_perl_clone(inst->perl,inst->thread_key);
 641         {
 642                 dTHXa(interp);
 643                 PERL_SET_CONTEXT(interp);
 644         }
 645
 646         pthread_mutex_unlock(&inst->clone_mutex);
 647 #else
 648         PERL_SET_CONTEXT(inst->perl);
 649 #endif
 650
 651         {
 652                 dSP;
 653
 654                 ENTER;
 655                 SAVETMPS;
 656
 657                 rad_reply_hv = get_hv("RAD_REPLY",1);
 658                 rad_check_hv = get_hv("RAD_CHECK",1);
 659                 rad_config_hv = get_hv("RAD_CONFIG",1);
 660                 rad_request_hv = get_hv("RAD_REQUEST",1);
 661
 662                 perl_store_vps(request->reply, request->reply->vps, rad_reply_hv);
 663                 perl_store_vps(request, request->config_items, rad_check_hv);
 664                 perl_store_vps(request->packet, request->packet->vps, rad_request_hv);
 665                 perl_store_vps(request, request->config_items, rad_config_hv);
 666
 667 #ifdef WITH_PROXY
 668                 rad_request_proxy_hv = get_hv("RAD_REQUEST_PROXY",1);
 669                 rad_request_proxy_reply_hv = get_hv("RAD_REQUEST_PROXY_REPLY",1);
 670
 671                 if (request->proxy != NULL) {
 672                         perl_store_vps(request->proxy, request->proxy->vps, rad_request_proxy_hv);
 673                 } else {
 674                         hv_undef(rad_request_proxy_hv);
 675                 }
 676
 677                 if (request->proxy_reply !=NULL) {
 678                         perl_store_vps(request->proxy_reply, request->proxy_reply->vps, rad_request_proxy_reply_hv);
 679                 } else {
 680                         hv_undef(rad_request_proxy_reply_hv);
 681                 }
 682 #endif
 683
 684                 PUSHMARK(SP);
 685                 /*
 686                  * This way %RAD_xx can be pushed onto stack as sub parameters.
 687                  * XPUSHs( newRV_noinc((SV *)rad_request_hv) );
 688                  * XPUSHs( newRV_noinc((SV *)rad_reply_hv) );
 689                  * XPUSHs( newRV_noinc((SV *)rad_check_hv) );
 690                  * PUTBACK;
 691                  */
 692
 693                 count = call_pv(function_name, G_SCALAR | G_EVAL | G_NOARGS);
 694
 695                 SPAGAIN;
 696
 697                 if (SvTRUE(ERRSV)) {
 698                         ERROR("rlm_perl: perl_embed:: module = %s , func = %s exit status= %s\n",
 699                                inst->module,
 700                                function_name, SvPV(ERRSV,n_a));
 701                         (void)POPs;
 702                 }
 703
 704                 if (count == 1) {
 705                         exitstatus = POPi;
 706                         if (exitstatus >= 100 || exitstatus < 0) {
 707                                 exitstatus = RLM_MODULE_FAIL;
 708                         }
 709                 }
 710
 711
 712                 PUTBACK;
 713                 FREETMPS;
 714                 LEAVE;
 715
 716                 vp = NULL;
 717                 if ((get_hv_content(request->packet, rad_request_hv, &vp)) > 0 ) {
 718                         pairfree(&request->packet->vps);
 719                         request->packet->vps = vp;
 720                         vp = NULL;
 721
 722                         /*
 723                          *      Update cached copies
 724                          */
 725                         request->username = pairfind(request->packet->vps, PW_USER_NAME, 0, TAG_ANY);
 726                         request->password = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY);
 727                         if (!request->password)
 728                                 request->password = pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY);
 729                 }
 730
 731                 if ((get_hv_content(request->reply, rad_reply_hv, &vp)) > 0 ) {
 732                         pairfree(&request->reply->vps);
 733                         request->reply->vps = vp;
 734                         vp = NULL;
 735                 }
 736
 737                 if ((get_hv_content(request, rad_check_hv, &vp)) > 0 ) {
 738                         pairfree(&request->config_items);
 739                         request->config_items = vp;
 740                         vp = NULL;
 741                 }
 742
 743 #ifdef WITH_PROXY
 744                 if (request->proxy &&
 745                     (get_hv_content(request->proxy, rad_request_proxy_hv, &vp) > 0)) {
 746                         pairfree(&request->proxy->vps);
 747                         request->proxy->vps = vp;
 748                         vp = NULL;
 749                 }
 750
 751                 if (request->proxy_reply &&
 752                     (get_hv_content(request->proxy_reply, rad_request_proxy_reply_hv, &vp) > 0)) {
 753                         pairfree(&request->proxy_reply->vps);
 754                         request->proxy_reply->vps = vp;
 755                         vp = NULL;
 756                 }
 757 #endif
 758
 759         }
 760         return exitstatus;
 761 }
 762
 763 #define RLM_PERL_FUNC(_x) static rlm_rcode_t mod_##_x(void *instance, REQUEST *request) \
 764         {                                                               \
 765                 return do_perl(instance, request,                       \
 766                                ((rlm_perl_t *)instance)->func_##_x); \
 767         }
 768
 769 RLM_PERL_FUNC(authorize)
 770 RLM_PERL_FUNC(authenticate)
 771 RLM_PERL_FUNC(post_auth)
 772
 773 RLM_PERL_FUNC(checksimul)
 774
 775 #ifdef WITH_PROXY
 776 RLM_PERL_FUNC(pre_proxy)
 777 RLM_PERL_FUNC(post_proxy)
 778 #endif
 779
 780 #ifdef WITH_COA
 781 RLM_PERL_FUNC(recv_coa)
 782 RLM_PERL_FUNC(send_coa)
 783 #endif
 784
 785 RLM_PERL_FUNC(preacct)
 786
 787 /*
 788  *      Write accounting information to this modules database.
 789  */
 790 static rlm_rcode_t mod_accounting(void *instance, REQUEST *request)
 791 {
 792         VALUE_PAIR      *pair;
 793         int             acctstatustype=0;
 794
 795         if ((pair = pairfind(request->packet->vps, PW_ACCT_STATUS_TYPE, 0, TAG_ANY)) != NULL) {
 796                 acctstatustype = pair->vp_integer;
 797         } else {
 798                 ERROR("Invalid Accounting Packet");
 799                 return RLM_MODULE_INVALID;
 800         }
 801
 802         switch (acctstatustype) {
 803
 804         case PW_STATUS_START:
 805
 806                 if (((rlm_perl_t *)instance)->func_start_accounting) {
 807                         return do_perl(instance, request,
 808                                        ((rlm_perl_t *)instance)->func_start_accounting);
 809                 } else {
 810                         return do_perl(instance, request,
 811                                        ((rlm_perl_t *)instance)->func_accounting);
 812                 }
 813                 break;
 814
 815         case PW_STATUS_STOP:
 816
 817                 if (((rlm_perl_t *)instance)->func_stop_accounting) {
 818                         return do_perl(instance, request,
 819                                        ((rlm_perl_t *)instance)->func_stop_accounting);
 820                 } else {
 821                         return do_perl(instance, request,
 822                                        ((rlm_perl_t *)instance)->func_accounting);
 823                 }
 824                 break;
 825         default:
 826                 return do_perl(instance, request,
 827                                ((rlm_perl_t *)instance)->func_accounting);
 828
 829         }
 830 }
 831
 832
 833 /*
 834  * Detach a instance give a chance to a module to make some internal setup ...
 835  */
 836 DIAG_OFF(nested-externs)
 837 static int mod_detach(void *instance)
 838 {
 839         rlm_perl_t      *inst = (rlm_perl_t *) instance;
 840         int             exitstatus = 0, count = 0;
 841
 842 #if 0
 843         /*
 844          *      FIXME: Call this in the destruct function?
 845          */
 846         {
 847                 dTHXa(handle->clone);
 848                 PERL_SET_CONTEXT(handle->clone);
 849                 {
 850                         dSP; ENTER; SAVETMPS; PUSHMARK(SP);
 851                         count = call_pv(inst->func_detach, G_SCALAR | G_EVAL );
 852                         SPAGAIN;
 853
 854                         if (count == 1) {
 855                                 exitstatus = POPi;
 856                                 /*
 857                                  * FIXME: bug in perl
 858                                  *
 859                                  */
 860                                 if (exitstatus >= 100 || exitstatus < 0) {
 861                                         exitstatus = RLM_MODULE_FAIL;
 862                                 }
 863                         }
 864                         PUTBACK;
 865                         FREETMPS;
 866                         LEAVE;
 867                 }
 868         }
 869 #endif
 870
 871         if (inst->func_detach) {
 872                 dTHXa(inst->perl);
 873                 PERL_SET_CONTEXT(inst->perl);
 874                 {
 875                         dSP; ENTER; SAVETMPS;
 876                         PUSHMARK(SP);
 877
 878                         count = call_pv(inst->func_detach, G_SCALAR | G_EVAL );
 879                         SPAGAIN;
 880
 881                         if (count == 1) {
 882                                 exitstatus = POPi;
 883                                 if (exitstatus >= 100 || exitstatus < 0) {
 884                                         exitstatus = RLM_MODULE_FAIL;
 885                                 }
 886                         }
 887                         PUTBACK;
 888                         FREETMPS;
 889                         LEAVE;
 890                 }
 891         }
 892
 893 #ifdef USE_ITHREADS
 894         rlm_perl_destruct(inst->perl);
 895         pthread_mutex_destroy(&inst->clone_mutex);
 896 #else
 897         perl_destruct(inst->perl);
 898         perl_free(inst->perl);
 899 #endif
 900
 901         PERL_SYS_TERM();
 902         return exitstatus;
 903 }
 904 DIAG_ON(nested-externs)
 905
 906 /*
 907  *      The module name should be the only globally exported symbol.
 908  *      That is, everything else should be 'static'.
 909  *
 910  *      If the module needs to temporarily modify it's instantiation
 911  *      data, the type should be changed to RLM_TYPE_THREAD_UNSAFE.
 912  *      The server will then take care of ensuring that the module
 913  *      is single-threaded.
 914  */
 915 module_t rlm_perl = {
 916         RLM_MODULE_INIT,
 917         "perl",                         /* Name */
 918 #ifdef USE_ITHREADS
 919         RLM_TYPE_THREAD_SAFE,           /* type */
 920 #else
 921         RLM_TYPE_THREAD_UNSAFE,
 922 #endif
 923         sizeof(rlm_perl_t),
 924         module_config,
 925         mod_instantiate,                /* instantiation */
 926         mod_detach,                     /* detach */
 927         {
 928                 mod_authenticate,       /* authenticate */
 929                 mod_authorize,          /* authorize */
 930                 mod_preacct,            /* preacct */
 931                 mod_accounting, /* accounting */
 932                 mod_checksimul,         /* check simul */
 933 #ifdef WITH_PROXY
 934                 mod_pre_proxy,          /* pre-proxy */
 935                 mod_post_proxy, /* post-proxy */
 936 #else
 937                 NULL, NULL,
 938 #endif
 939                 mod_post_auth           /* post-auth */
 940 #ifdef WITH_COA
 941                 , mod_recv_coa,
 942                 mod_send_coa
 943 #endif
 944         },
 945 };