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
  82         HV              *rad_perlconf_hv; // holds "config" items (perl %RAD_PERLCONF hash).
  83
  84 } rlm_perl_t;
  85 /*
  86  *      A mapping of configuration file names to internal variables.
  87  */
  88 #define RLM_PERL_CONF(_x) { "func_" STRINGIFY(_x), PW_TYPE_STRING_PTR, \
  89                         offsetof(rlm_perl_t,func_##_x), NULL, STRINGIFY(_x)}
  90
  91 static const CONF_PARSER module_config[] = {
  92         { "module",  PW_TYPE_FILE_INPUT | PW_TYPE_DEPRECATED,
  93           offsetof(rlm_perl_t,module), NULL,  NULL},
  94         { "filename",  PW_TYPE_FILE_INPUT | PW_TYPE_REQUIRED,
  95           offsetof(rlm_perl_t,module), NULL,  NULL},
  96
  97         RLM_PERL_CONF(authorize),
  98         RLM_PERL_CONF(authenticate),
  99         RLM_PERL_CONF(post_auth),
 100         RLM_PERL_CONF(accounting),
 101         RLM_PERL_CONF(preacct),
 102         RLM_PERL_CONF(checksimul),
 103         RLM_PERL_CONF(detach),
 104         RLM_PERL_CONF(xlat),
 105
 106 #ifdef WITH_PROXY
 107         RLM_PERL_CONF(pre_proxy),
 108         RLM_PERL_CONF(post_proxy),
 109 #endif
 110 #ifdef WITH_COA
 111         RLM_PERL_CONF(recv_coa),
 112         RLM_PERL_CONF(send_coa),
 113 #endif
 114         { "perl_flags", PW_TYPE_STRING_PTR,
 115           offsetof(rlm_perl_t,perl_flags), NULL, NULL},
 116
 117         { "func_start_accounting", PW_TYPE_STRING_PTR,
 118           offsetof(rlm_perl_t,func_start_accounting), NULL, NULL},
 119
 120         { "func_stop_accounting", PW_TYPE_STRING_PTR,
 121           offsetof(rlm_perl_t,func_stop_accounting), NULL, NULL},
 122
 123         { NULL, -1, 0, NULL, NULL }             /* end the list */
 124 };
 125
 126 /*
 127  * man perlembed
 128  */
 129 EXTERN_C void boot_DynaLoader(pTHX_ CV* cv);
 130
 131 #ifdef USE_ITHREADS
 132 #define dl_librefs "DynaLoader::dl_librefs"
 133 #define dl_modules "DynaLoader::dl_modules"
 134 static void rlm_perl_clear_handles(pTHX)
 135 {
 136         AV *librefs = get_av(dl_librefs, false);
 137         if (librefs) {
 138                 av_clear(librefs);
 139         }
 140 }
 141
 142 static void **rlm_perl_get_handles(pTHX)
 143 {
 144         I32 i;
 145         AV *librefs = get_av(dl_librefs, false);
 146         AV *modules = get_av(dl_modules, false);
 147         void **handles;
 148
 149         if (!librefs) return NULL;
 150
 151         if (!(AvFILL(librefs) >= 0)) {
 152                 return NULL;
 153         }
 154
 155         handles = (void **)rad_malloc(sizeof(void *) * (AvFILL(librefs)+2));
 156
 157         for (i=0; i<=AvFILL(librefs); i++) {
 158                 void *handle;
 159                 SV *handle_sv = *av_fetch(librefs, i, false);
 160
 161                 if(!handle_sv) {
 162                         ERROR("Could not fetch $%s[%d]!\n",
 163                                dl_librefs, (int)i);
 164                         continue;
 165                 }
 166                 handle = (void *)SvIV(handle_sv);
 167
 168                 if (handle) {
 169                         handles[i] = handle;
 170                 }
 171         }
 172
 173         av_clear(modules);
 174         av_clear(librefs);
 175
 176         handles[i] = (void *)0;
 177
 178         return handles;
 179 }
 180
 181 static void rlm_perl_close_handles(void **handles)
 182 {
 183         int i;
 184
 185         if (!handles) {
 186                 return;
 187         }
 188
 189         for (i=0; handles[i]; i++) {
 190                 DEBUG("close %p\n", handles[i]);
 191                 dlclose(handles[i]);
 192         }
 193
 194         free(handles);
 195 }
 196
 197 DIAG_OFF(shadow)
 198 static void rlm_perl_destruct(PerlInterpreter *perl)
 199 {
 200         dTHXa(perl);
 201
 202         PERL_SET_CONTEXT(perl);
 203
 204         PL_perl_destruct_level = 2;
 205
 206         PL_origenviron = environ;
 207
 208
 209         {
 210                 dTHXa(perl);
 211         }
 212         /*
 213          * FIXME: This shouldn't happen
 214          *
 215          */
 216         while (PL_scopestack_ix > 1 ){
 217                 LEAVE;
 218         }
 219
 220         perl_destruct(perl);
 221         perl_free(perl);
 222 }
 223 DIAG_ON(shadow)
 224
 225 static void rlm_destroy_perl(PerlInterpreter *perl)
 226 {
 227         void    **handles;
 228
 229         dTHXa(perl);
 230         PERL_SET_CONTEXT(perl);
 231
 232         handles = rlm_perl_get_handles(aTHX);
 233         if (handles) rlm_perl_close_handles(handles);
 234         rlm_perl_destruct(perl);
 235 }
 236
 237 /* Create Key */
 238 static void rlm_perl_make_key(pthread_key_t *key)
 239 {
 240         pthread_key_create(key, (void*)rlm_destroy_perl);
 241 }
 242
 243 static PerlInterpreter *rlm_perl_clone(PerlInterpreter *perl, pthread_key_t *key)
 244 {
 245         int ret;
 246
 247         PerlInterpreter *interp;
 248         UV clone_flags = 0;
 249
 250         PERL_SET_CONTEXT(perl);
 251
 252         interp = pthread_getspecific(*key);
 253         if (interp) return interp;
 254
 255         interp = perl_clone(perl, clone_flags);
 256         {
 257                 dTHXa(interp);
 258         }
 259 #if PERL_REVISION >= 5 && PERL_VERSION <8
 260         call_pv("CLONE",0);
 261 #endif
 262         ptr_table_free(PL_ptr_table);
 263         PL_ptr_table = NULL;
 264
 265         PERL_SET_CONTEXT(aTHX);
 266         rlm_perl_clear_handles(aTHX);
 267
 268         ret = pthread_setspecific(*key, interp);
 269         if (ret != 0) {
 270                 DEBUG("rlm_perl: Failed associating interpretor with thread %s", fr_syserror(ret));
 271
 272                 rlm_perl_destruct(interp);
 273                 return NULL;
 274         }
 275
 276         return interp;
 277 }
 278 #endif
 279
 280 /*
 281  *
 282  * This is wrapper for radlog
 283  * Now users can call radiusd::radlog(level,msg) wich is the same
 284  * calling radlog from C code.
 285  * Boyan
 286  */
 287 static XS(XS_radiusd_radlog)
 288 {
 289         dXSARGS;
 290         if (items !=2)
 291                 croak("Usage: radiusd::radlog(level, message)");
 292         {
 293                 int     level;
 294                 char    *msg;
 295
 296                 level = (int) SvIV(ST(0));
 297                 msg   = (char *) SvPV(ST(1), PL_na);
 298
 299                 /*
 300                  *      Because 'msg' is a 'char *', we don't want '%s', etc.
 301                  *      in it to give us printf-style vulnerabilities.
 302                  */
 303                 radlog(level, "rlm_perl: %s", msg);
 304         }
 305         XSRETURN_NO;
 306 }
 307
 308 static void xs_init(pTHX)
 309 {
 310         char const *file = __FILE__;
 311
 312         /* DynaLoader is a special case */
 313         newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
 314
 315         newXS("radiusd::radlog",XS_radiusd_radlog, "rlm_perl");
 316 }
 317
 318 /*
 319  * The xlat function
 320  */
 321 static ssize_t perl_xlat(void *instance, REQUEST *request, char const *fmt, char *out, size_t freespace)
 322 {
 323
 324         rlm_perl_t      *inst= (rlm_perl_t *) instance;
 325         char            *tmp;
 326         char const      *p, *q;
 327         int             count;
 328         size_t          ret = 0;
 329         STRLEN          n_a;
 330
 331 #ifdef USE_ITHREADS
 332         PerlInterpreter *interp;
 333
 334         pthread_mutex_lock(&inst->clone_mutex);
 335         interp = rlm_perl_clone(inst->perl, inst->thread_key);
 336         {
 337                 dTHXa(interp);
 338                 PERL_SET_CONTEXT(interp);
 339         }
 340         pthread_mutex_unlock(&inst->clone_mutex);
 341 #else
 342         PERL_SET_CONTEXT(inst->perl);
 343 #endif
 344         {
 345                 dSP;
 346                 ENTER;SAVETMPS;
 347
 348                 PUSHMARK(SP);
 349
 350                 p = fmt;
 351                 while ((q = strchr(p, ' '))) {
 352                         XPUSHs(sv_2mortal(newSVpv(p, p - q)));
 353
 354                         p = q + 1;
 355                 }
 356
 357                 PUTBACK;
 358
 359                 count = call_pv(inst->func_xlat, G_SCALAR | G_EVAL);
 360
 361                 SPAGAIN;
 362                 if (SvTRUE(ERRSV)) {
 363                         REDEBUG("Exit %s", SvPV(ERRSV,n_a));
 364                         (void)POPs;
 365                 } else if (count > 0) {
 366                         tmp = POPp;
 367                         strlcpy(out, tmp, freespace);
 368                         ret = strlen(out);
 369
 370                         RDEBUG("Len is %zu , out is %s freespace is %zu", ret, out, freespace);
 371                 }
 372
 373                 PUTBACK ;
 374                 FREETMPS ;
 375                 LEAVE ;
 376
 377         }
 378
 379         return ret;
 380 }
 381
 382 /*
 383  *      Parse a configuration section, and populate a HV.
 384  *      This function is recursively called (allows to have nested hashes.)
 385  */
 386 void perl_parse_config(CONF_SECTION *cs, int lvl, HV *rad_hv)
 387 {
 388         if ((NULL == cs) || (NULL == rad_hv)) return;
 389
 390         int indent_section = (lvl+1)*4;
 391         int indent_item = (lvl+2)*4;
 392
 393         DEBUG("%*s%s {", indent_section, " ", cf_section_name1(cs));
 394
 395         CONF_ITEM *ci;
 396
 397         for (ci = cf_item_find_next(cs, NULL);
 398                  ci != NULL;
 399                  ci = cf_item_find_next(cs, ci))
 400         {
 401                 if (cf_item_is_section(ci)) {
 402                         /* this is a section.
 403                          * create a new HV, store it as a reference in current HV,
 404                          * then recursively call perl_parse_config with this section and the new HV.
 405                          */
 406                         CONF_SECTION *scs = cf_itemtosection(ci);
 407
 408                         char const *scs_name = cf_section_name1(scs); // hash key
 409                         if (!scs_name) continue;
 410
 411                         if (hv_exists(rad_hv, scs_name, strlen(scs_name))) {
 412                                 WARN("rlm_perl: Ignoring duplicate config section '%s'", scs_name);
 413                                 continue;
 414                         }
 415
 416                         HV *sub_hv;
 417                         SV* ref;
 418                         sub_hv = newHV();
 419                         ref = newRV_inc((SV*) sub_hv);
 420
 421                         (void)hv_store(rad_hv, scs_name, strlen(scs_name), ref, 0);
 422
 423                         perl_parse_config(scs, lvl+1, sub_hv);
 424
 425                 } else {
 426                         if (!cf_item_is_pair(ci)) continue;
 427                         /* this is an item.
 428                          * store item attr / value in current HV.
 429                          */
 430
 431                         CONF_PAIR *cp = cf_itemtopair(ci);
 432                         char const      *attr = cf_pair_attr(cp); // hash key
 433                         char const      *value = cf_pair_value(cp); // hash value
 434                         if ((!attr) || (!value)) continue;
 435
 436                         if (hv_exists(rad_hv, attr, strlen(attr))) {
 437                                 WARN("rlm_perl: Ignoring duplicate config item '%s'", attr);
 438                                 continue;
 439                         }
 440
 441                         (void)hv_store(rad_hv, attr, strlen(attr), newSVpv(value, strlen(value)), 0);
 442
 443                         DEBUG("%*s%s = %s", indent_item, " ", attr, value);
 444                 }
 445         }
 446
 447         DEBUG("%*s}", indent_section, " ");
 448 }
 449
 450 /*
 451  *      Do any per-module initialization that is separate to each
 452  *      configured instance of the module.  e.g. set up connections
 453  *      to external databases, read configuration files, set up
 454  *      dictionary entries, etc.
 455  *
 456  *      If configuration information is given in the config section
 457  *      that must be referenced in later calls, store a handle to it
 458  *      in *instance otherwise put a null pointer there.
 459  *
 460  *      Boyan:
 461  *      Setup a hashes wich we will use later
 462  *      parse a module and give him a chance to live
 463  *
 464  */
 465 static int mod_instantiate(CONF_SECTION *conf, void *instance)
 466 {
 467         rlm_perl_t       *inst = instance;
 468         AV              *end_AV;
 469
 470         char **embed;
 471         char **envp = NULL;
 472         char const *xlat_name;
 473         int exitstatus = 0, argc=0;
 474
 475         MEM(embed = talloc_zero_array(inst, char *, 4));
 476
 477         /*
 478          *      Create pthread key. This key will be stored in instance
 479          */
 480
 481 #ifdef USE_ITHREADS
 482         pthread_mutex_init(&inst->clone_mutex, NULL);
 483
 484         inst->thread_key = rad_malloc(sizeof(*inst->thread_key));
 485         memset(inst->thread_key,0,sizeof(*inst->thread_key));
 486
 487         rlm_perl_make_key(inst->thread_key);
 488 #endif
 489
 490         char arg[] = "0";
 491
 492         embed[0] = NULL;
 493         if (inst->perl_flags) {
 494                 embed[1] = inst->perl_flags;
 495                 embed[2] = inst->module;
 496                 embed[3] = arg;
 497                 argc = 4;
 498         } else {
 499                 embed[1] = inst->module;
 500                 embed[2] = arg;
 501                 argc = 3;
 502         }
 503
 504         PERL_SYS_INIT3(&argc, &embed, &envp);
 505
 506         if ((inst->perl = perl_alloc()) == NULL) {
 507                 ERROR("rlm_perl: No memory for allocating new perl !");
 508                 return (-1);
 509         }
 510
 511         perl_construct(inst->perl);
 512
 513 #ifdef USE_ITHREADS
 514         PL_perl_destruct_level = 2;
 515
 516         {
 517                 dTHXa(inst->perl);
 518         }
 519         PERL_SET_CONTEXT(inst->perl);
 520 #endif
 521
 522 #if PERL_REVISION >= 5 && PERL_VERSION >=8
 523         PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
 524 #endif
 525
 526         exitstatus = perl_parse(inst->perl, xs_init, argc, embed, NULL);
 527
 528         end_AV = PL_endav;
 529         PL_endav = Nullav;
 530
 531         if(!exitstatus) {
 532                 perl_run(inst->perl);
 533         } else {
 534                 ERROR("rlm_perl: perl_parse failed: %s not found or has syntax errors. \n", inst->module);
 535                 return (-1);
 536         }
 537
 538         PL_endav = end_AV;
 539
 540         xlat_name = cf_section_name2(conf);
 541         if (!xlat_name)
 542                 xlat_name = cf_section_name1(conf);
 543         if (xlat_name) {
 544                 xlat_register(xlat_name, perl_xlat, NULL, inst);
 545         }
 546
 547         /* parse perl configuration sub-section */
 548         CONF_SECTION *cs;
 549         cs = cf_section_sub_find(conf, "config");
 550         if (cs) {
 551                 DEBUG("rlm_perl (%s): parsing 'config' section...", xlat_name);
 552
 553                 inst->rad_perlconf_hv = get_hv("RAD_PERLCONF",1);
 554                 perl_parse_config(cs, 0, inst->rad_perlconf_hv);
 555
 556                 DEBUG("rlm_perl (%s): done parsing 'config'.", xlat_name);
 557         }
 558
 559         return 0;
 560 }
 561
 562 /*
 563  *      get the vps and put them in perl hash
 564  *      If one VP have multiple values it is added as array_ref
 565  *      Example for this is Cisco-AVPair that holds multiple values.
 566  *      Which will be available as array_ref in $RAD_REQUEST{'Cisco-AVPair'}
 567  */
 568 static void perl_store_vps(TALLOC_CTX *ctx, VALUE_PAIR *vps, HV *rad_hv)
 569 {
 570         VALUE_PAIR *head, *sublist;
 571         AV *av;
 572         char const *name;
 573         char namebuf[256];
 574         char buffer[1024];
 575         size_t len;
 576
 577         hv_undef(rad_hv);
 578
 579         /*
 580          *      Copy the valuepair list so we can remove attributes
 581          *      we've already processed.  This is a horrible hack to
 582          *      get around various other stupidity.
 583          */
 584         head = paircopy(ctx, vps);
 585
 586         while (head) {
 587                 vp_cursor_t cursor;
 588                 /*
 589                  *      Tagged attributes are added to the hash with name
 590                  *      <attribute>:<tag>, others just use the normal attribute
 591                  *      name as the key.
 592                  */
 593                 if (head->da->flags.has_tag && (head->tag != 0)) {
 594                         snprintf(namebuf, sizeof(namebuf), "%s:%d",
 595                                  head->da->name, head->tag);
 596                         name = namebuf;
 597                 } else {
 598                         name = head->da->name;
 599                 }
 600
 601                 /*
 602                  *      Create a new list with all the attributes like this one
 603                  *      which are in the same tag group.
 604                  */
 605                 sublist = NULL;
 606                 pairfilter(ctx, &sublist, &head, head->da->attr, head->da->vendor, head->tag);
 607
 608                 fr_cursor_init(&cursor, &sublist);
 609                 /*
 610                  *      Attribute has multiple values
 611                  */
 612                 if (fr_cursor_next(&cursor)) {
 613                         VALUE_PAIR *vp;
 614
 615                         av = newAV();
 616                         for (vp = fr_cursor_first(&cursor);
 617                              vp;
 618                              vp = fr_cursor_next(&cursor)) {
 619                                 len = vp_prints_value(buffer, sizeof(buffer), vp, 0);
 620                                 av_push(av, newSVpv(buffer, truncate_len(len, sizeof(buffer))));
 621                         }
 622                         (void)hv_store(rad_hv, name, strlen(name), newRV_noinc((SV *)av), 0);
 623
 624                         /*
 625                          *      Attribute has a single value, so its value just gets
 626                          *      added to the hash.
 627                          */
 628                 } else {
 629                         len = vp_prints_value(buffer, sizeof(buffer), sublist, 0);
 630                         (void)hv_store(rad_hv, name, strlen(name), newSVpv(buffer, truncate_len(len, sizeof(buffer))), 0);
 631                 }
 632
 633                 pairfree(&sublist);
 634         }
 635
 636         rad_assert(!head);
 637 }
 638
 639 /*
 640  *
 641  *     Verify that a Perl SV is a string and save it in FreeRadius
 642  *     Value Pair Format
 643  *
 644  */
 645 static int pairadd_sv(TALLOC_CTX *ctx, VALUE_PAIR **vps, char *key, SV *sv, FR_TOKEN op)
 646 {
 647         char        *val;
 648         VALUE_PAIR      *vp;
 649
 650         if (SvOK(sv)) {
 651                 val = SvPV_nolen(sv);
 652                 vp = pairmake(ctx, vps, key, val, op);
 653                 if (vp != NULL) {
 654                         DEBUG("rlm_perl: Added pair %s = %s", key, val);
 655                         return 1;
 656                 } else {
 657                         EDEBUG("rlm_perl: Failed to create pair %s = %s", key, val);
 658                 }
 659         }
 660         return 0;
 661 }
 662
 663 /*
 664  *     Boyan :
 665  *     Gets the content from hashes
 666  */
 667 static int get_hv_content(TALLOC_CTX *ctx, HV *my_hv, VALUE_PAIR **vps)
 668 {
 669         SV              *res_sv, **av_sv;
 670         AV              *av;
 671         char            *key;
 672         I32             key_len, len, i, j;
 673         int             ret=0;
 674
 675         *vps = NULL;
 676         for (i = hv_iterinit(my_hv); i > 0; i--) {
 677                 res_sv = hv_iternextsv(my_hv,&key,&key_len);
 678                 if (SvROK(res_sv) && (SvTYPE(SvRV(res_sv)) == SVt_PVAV)) {
 679                         av = (AV*)SvRV(res_sv);
 680                         len = av_len(av);
 681                         for (j = 0; j <= len; j++) {
 682                                 av_sv = av_fetch(av, j, 0);
 683                                 ret = pairadd_sv(ctx, vps, key, *av_sv, T_OP_ADD) + ret;
 684                         }
 685                 } else ret = pairadd_sv(ctx, vps, key, res_sv, T_OP_EQ) + ret;
 686         }
 687
 688         return ret;
 689 }
 690
 691 /*
 692  *      Call the function_name inside the module
 693  *      Store all vps in hashes %RAD_CHECK %RAD_REPLY %RAD_REQUEST
 694  *
 695  */
 696 static int do_perl(void *instance, REQUEST *request, char *function_name)
 697 {
 698
 699         rlm_perl_t      *inst = instance;
 700         VALUE_PAIR      *vp;
 701         int             exitstatus=0, count;
 702         STRLEN          n_a;
 703
 704         HV              *rad_reply_hv;
 705         HV              *rad_check_hv;
 706         HV              *rad_config_hv;
 707         HV              *rad_request_hv;
 708 #ifdef WITH_PROXY
 709         HV              *rad_request_proxy_hv;
 710         HV              *rad_request_proxy_reply_hv;
 711 #endif
 712
 713         /*
 714          *      Radius has told us to call this function, but none
 715          *      is defined.
 716          */
 717         if (!function_name) return RLM_MODULE_FAIL;
 718
 719 #ifdef USE_ITHREADS
 720         pthread_mutex_lock(&inst->clone_mutex);
 721
 722         PerlInterpreter *interp;
 723
 724         interp = rlm_perl_clone(inst->perl,inst->thread_key);
 725         {
 726                 dTHXa(interp);
 727                 PERL_SET_CONTEXT(interp);
 728         }
 729
 730         pthread_mutex_unlock(&inst->clone_mutex);
 731 #else
 732         PERL_SET_CONTEXT(inst->perl);
 733 #endif
 734
 735         {
 736                 dSP;
 737
 738                 ENTER;
 739                 SAVETMPS;
 740
 741                 rad_reply_hv = get_hv("RAD_REPLY",1);
 742                 rad_check_hv = get_hv("RAD_CHECK",1);
 743                 rad_config_hv = get_hv("RAD_CONFIG",1);
 744                 rad_request_hv = get_hv("RAD_REQUEST",1);
 745
 746                 perl_store_vps(request->reply, request->reply->vps, rad_reply_hv);
 747                 perl_store_vps(request, request->config_items, rad_check_hv);
 748                 perl_store_vps(request->packet, request->packet->vps, rad_request_hv);
 749                 perl_store_vps(request, request->config_items, rad_config_hv);
 750
 751 #ifdef WITH_PROXY
 752                 rad_request_proxy_hv = get_hv("RAD_REQUEST_PROXY",1);
 753                 rad_request_proxy_reply_hv = get_hv("RAD_REQUEST_PROXY_REPLY",1);
 754
 755                 if (request->proxy != NULL) {
 756                         perl_store_vps(request->proxy, request->proxy->vps, rad_request_proxy_hv);
 757                 } else {
 758                         hv_undef(rad_request_proxy_hv);
 759                 }
 760
 761                 if (request->proxy_reply !=NULL) {
 762                         perl_store_vps(request->proxy_reply, request->proxy_reply->vps, rad_request_proxy_reply_hv);
 763                 } else {
 764                         hv_undef(rad_request_proxy_reply_hv);
 765                 }
 766 #endif
 767
 768                 PUSHMARK(SP);
 769                 /*
 770                  * This way %RAD_xx can be pushed onto stack as sub parameters.
 771                  * XPUSHs( newRV_noinc((SV *)rad_request_hv) );
 772                  * XPUSHs( newRV_noinc((SV *)rad_reply_hv) );
 773                  * XPUSHs( newRV_noinc((SV *)rad_check_hv) );
 774                  * PUTBACK;
 775                  */
 776
 777                 count = call_pv(function_name, G_SCALAR | G_EVAL | G_NOARGS);
 778
 779                 SPAGAIN;
 780
 781                 if (SvTRUE(ERRSV)) {
 782                         ERROR("rlm_perl: perl_embed:: module = %s , func = %s exit status= %s\n",
 783                                inst->module,
 784                                function_name, SvPV(ERRSV,n_a));
 785                         (void)POPs;
 786                 }
 787
 788                 if (count == 1) {
 789                         exitstatus = POPi;
 790                         if (exitstatus >= 100 || exitstatus < 0) {
 791                                 exitstatus = RLM_MODULE_FAIL;
 792                         }
 793                 }
 794
 795
 796                 PUTBACK;
 797                 FREETMPS;
 798                 LEAVE;
 799
 800                 vp = NULL;
 801                 if ((get_hv_content(request->packet, rad_request_hv, &vp)) > 0 ) {
 802                         pairfree(&request->packet->vps);
 803                         request->packet->vps = vp;
 804                         vp = NULL;
 805
 806                         /*
 807                          *      Update cached copies
 808                          */
 809                         request->username = pairfind(request->packet->vps, PW_USER_NAME, 0, TAG_ANY);
 810                         request->password = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY);
 811                         if (!request->password)
 812                                 request->password = pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY);
 813                 }
 814
 815                 if ((get_hv_content(request->reply, rad_reply_hv, &vp)) > 0 ) {
 816                         pairfree(&request->reply->vps);
 817                         request->reply->vps = vp;
 818                         vp = NULL;
 819                 }
 820
 821                 if ((get_hv_content(request, rad_check_hv, &vp)) > 0 ) {
 822                         pairfree(&request->config_items);
 823                         request->config_items = vp;
 824                         vp = NULL;
 825                 }
 826
 827 #ifdef WITH_PROXY
 828                 if (request->proxy &&
 829                     (get_hv_content(request->proxy, rad_request_proxy_hv, &vp) > 0)) {
 830                         pairfree(&request->proxy->vps);
 831                         request->proxy->vps = vp;
 832                         vp = NULL;
 833                 }
 834
 835                 if (request->proxy_reply &&
 836                     (get_hv_content(request->proxy_reply, rad_request_proxy_reply_hv, &vp) > 0)) {
 837                         pairfree(&request->proxy_reply->vps);
 838                         request->proxy_reply->vps = vp;
 839                         vp = NULL;
 840                 }
 841 #endif
 842
 843         }
 844         return exitstatus;
 845 }
 846
 847 #define RLM_PERL_FUNC(_x) static rlm_rcode_t mod_##_x(void *instance, REQUEST *request) \
 848         {                                                               \
 849                 return do_perl(instance, request,                       \
 850                                ((rlm_perl_t *)instance)->func_##_x); \
 851         }
 852
 853 RLM_PERL_FUNC(authorize)
 854 RLM_PERL_FUNC(authenticate)
 855 RLM_PERL_FUNC(post_auth)
 856
 857 RLM_PERL_FUNC(checksimul)
 858
 859 #ifdef WITH_PROXY
 860 RLM_PERL_FUNC(pre_proxy)
 861 RLM_PERL_FUNC(post_proxy)
 862 #endif
 863
 864 #ifdef WITH_COA
 865 RLM_PERL_FUNC(recv_coa)
 866 RLM_PERL_FUNC(send_coa)
 867 #endif
 868
 869 RLM_PERL_FUNC(preacct)
 870
 871 /*
 872  *      Write accounting information to this modules database.
 873  */
 874 static rlm_rcode_t mod_accounting(void *instance, REQUEST *request)
 875 {
 876         VALUE_PAIR      *pair;
 877         int             acctstatustype=0;
 878
 879         if ((pair = pairfind(request->packet->vps, PW_ACCT_STATUS_TYPE, 0, TAG_ANY)) != NULL) {
 880                 acctstatustype = pair->vp_integer;
 881         } else {
 882                 ERROR("Invalid Accounting Packet");
 883                 return RLM_MODULE_INVALID;
 884         }
 885
 886         switch (acctstatustype) {
 887
 888         case PW_STATUS_START:
 889
 890                 if (((rlm_perl_t *)instance)->func_start_accounting) {
 891                         return do_perl(instance, request,
 892                                        ((rlm_perl_t *)instance)->func_start_accounting);
 893                 } else {
 894                         return do_perl(instance, request,
 895                                        ((rlm_perl_t *)instance)->func_accounting);
 896                 }
 897                 break;
 898
 899         case PW_STATUS_STOP:
 900
 901                 if (((rlm_perl_t *)instance)->func_stop_accounting) {
 902                         return do_perl(instance, request,
 903                                        ((rlm_perl_t *)instance)->func_stop_accounting);
 904                 } else {
 905                         return do_perl(instance, request,
 906                                        ((rlm_perl_t *)instance)->func_accounting);
 907                 }
 908                 break;
 909         default:
 910                 return do_perl(instance, request,
 911                                ((rlm_perl_t *)instance)->func_accounting);
 912
 913         }
 914 }
 915
 916
 917 /*
 918  * Detach a instance give a chance to a module to make some internal setup ...
 919  */
 920 DIAG_OFF(nested-externs)
 921 static int mod_detach(void *instance)
 922 {
 923         rlm_perl_t      *inst = (rlm_perl_t *) instance;
 924         int             exitstatus = 0, count = 0;
 925
 926         hv_undef(inst->rad_perlconf_hv);
 927
 928 #if 0
 929         /*
 930          *      FIXME: Call this in the destruct function?
 931          */
 932         {
 933                 dTHXa(handle->clone);
 934                 PERL_SET_CONTEXT(handle->clone);
 935                 {
 936                         dSP; ENTER; SAVETMPS; PUSHMARK(SP);
 937                         count = call_pv(inst->func_detach, G_SCALAR | G_EVAL );
 938                         SPAGAIN;
 939
 940                         if (count == 1) {
 941                                 exitstatus = POPi;
 942                                 /*
 943                                  * FIXME: bug in perl
 944                                  *
 945                                  */
 946                                 if (exitstatus >= 100 || exitstatus < 0) {
 947                                         exitstatus = RLM_MODULE_FAIL;
 948                                 }
 949                         }
 950                         PUTBACK;
 951                         FREETMPS;
 952                         LEAVE;
 953                 }
 954         }
 955 #endif
 956
 957         if (inst->func_detach) {
 958                 dTHXa(inst->perl);
 959                 PERL_SET_CONTEXT(inst->perl);
 960                 {
 961                         dSP; ENTER; SAVETMPS;
 962                         PUSHMARK(SP);
 963
 964                         count = call_pv(inst->func_detach, G_SCALAR | G_EVAL );
 965                         SPAGAIN;
 966
 967                         if (count == 1) {
 968                                 exitstatus = POPi;
 969                                 if (exitstatus >= 100 || exitstatus < 0) {
 970                                         exitstatus = RLM_MODULE_FAIL;
 971                                 }
 972                         }
 973                         PUTBACK;
 974                         FREETMPS;
 975                         LEAVE;
 976                 }
 977         }
 978
 979 #ifdef USE_ITHREADS
 980         rlm_perl_destruct(inst->perl);
 981         pthread_mutex_destroy(&inst->clone_mutex);
 982 #else
 983         perl_destruct(inst->perl);
 984         perl_free(inst->perl);
 985 #endif
 986
 987         PERL_SYS_TERM();
 988         return exitstatus;
 989 }
 990 DIAG_ON(nested-externs)
 991
 992 /*
 993  *      The module name should be the only globally exported symbol.
 994  *      That is, everything else should be 'static'.
 995  *
 996  *      If the module needs to temporarily modify it's instantiation
 997  *      data, the type should be changed to RLM_TYPE_THREAD_UNSAFE.
 998  *      The server will then take care of ensuring that the module
 999  *      is single-threaded.
1000  */
1001 module_t rlm_perl = {
1002         RLM_MODULE_INIT,
1003         "perl",                         /* Name */
1004 #ifdef USE_ITHREADS
1005         RLM_TYPE_THREAD_SAFE,           /* type */
1006 #else
1007         RLM_TYPE_THREAD_UNSAFE,
1008 #endif
1009         sizeof(rlm_perl_t),
1010         module_config,
1011         mod_instantiate,                /* instantiation */
1012         mod_detach,                     /* detach */
1013         {
1014                 mod_authenticate,       /* authenticate */
1015                 mod_authorize,          /* authorize */
1016                 mod_preacct,            /* preacct */
1017                 mod_accounting, /* accounting */
1018                 mod_checksimul,         /* check simul */
1019 #ifdef WITH_PROXY
1020                 mod_pre_proxy,          /* pre-proxy */
1021                 mod_post_proxy, /* post-proxy */
1022 #else
1023                 NULL, NULL,
1024 #endif
1025                 mod_post_auth           /* post-auth */
1026 #ifdef WITH_COA
1027                 , mod_recv_coa,
1028                 mod_send_coa
1029 #endif
1030         },
1031 };