src/main/conffile.c

   1 /*
   2  * conffile.c   Read the radiusd.conf file.
   3  *
   4  *              Yep I should learn to use lex & yacc, or at least
   5  *              write a decent parser. I know how to do that, really :)
   6  *              miquels@cistron.nl
   7  *
   8  * Version:     $Id$
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  *
  24  * Copyright 2000  The FreeRADIUS server project
  25  * Copyright 2000  Miquel van Smoorenburg <miquels@cistron.nl>
  26  * Copyright 2000  Alan DeKok <aland@ox.org>
  27  */
  28
  29 #include "autoconf.h"
  30 #include "libradius.h"
  31
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <assert.h>
  35
  36 #if HAVE_NETINET_IN_H
  37 #       include <netinet/in.h>
  38 #endif
  39
  40 #include "radiusd.h"
  41 #include "conffile.h"
  42 #include "token.h"
  43 #include "modules.h"
  44
  45 static const char rcsid[] =
  46 "$Id$";
  47
  48 #define xstrdup strdup
  49
  50 typedef enum conf_type {
  51         CONF_ITEM_PAIR,
  52         CONF_ITEM_SECTION
  53 } CONF_ITEM_TYPE;
  54
  55 struct conf_item {
  56         struct conf_item        *next;
  57         struct conf_part        *parent;
  58         int                     lineno;
  59         CONF_ITEM_TYPE          type;
  60 };
  61 struct conf_pair {
  62         CONF_ITEM       item;
  63         char            *attr;
  64         char            *value;
  65         int             operator;
  66 };
  67 struct conf_part {
  68         CONF_ITEM               item;
  69         char                    *name1;
  70         char                    *name2;
  71         struct conf_item        *children;
  72 };
  73
  74 CONF_SECTION    *config = NULL;
  75
  76 /*
  77  *      Yucky hacks.
  78  */
  79 extern RADCLIENT *clients;
  80 extern REALM     *realms;
  81 extern int read_realms_file(const char *file);
  82
  83 static int generate_realms(const char *filename);
  84 static int generate_clients(const char *filename);
  85 static CONF_SECTION *conf_read(const char *fromfile, int fromline, const char *conffile);
  86
  87 #ifndef RADIUS_CONFIG
  88 #define RADIUS_CONFIG "radiusd.conf"
  89 #endif
  90
  91 /*
  92  *      Isolate the scary casts in these tiny provably-safe functions
  93  */
  94 CONF_PAIR *cf_itemtopair(CONF_ITEM *ci)
  95 {
  96         if (ci == NULL)
  97                 return NULL;
  98         assert(ci->type == CONF_ITEM_PAIR);
  99         return (CONF_PAIR *)ci;
 100 }
 101 CONF_SECTION *cf_itemtosection(CONF_ITEM *ci)
 102 {
 103         if (ci == NULL)
 104                 return NULL;
 105         assert(ci->type == CONF_ITEM_SECTION);
 106         return (CONF_SECTION *)ci;
 107 }
 108 CONF_ITEM *cf_pairtoitem(CONF_PAIR *cp)
 109 {
 110         if (cp == NULL)
 111                 return NULL;
 112         return (CONF_ITEM *)cp;
 113 }
 114 CONF_ITEM *cf_sectiontoitem(CONF_SECTION *cs)
 115 {
 116         if (cs == NULL)
 117                 return NULL;
 118         return (CONF_ITEM *)cs;
 119 }
 120
 121 /*
 122  *      Create a new CONF_PAIR
 123  */
 124 static CONF_PAIR *cf_pair_alloc(const char *attr, const char *value,
 125                 int operator, CONF_SECTION *parent)
 126 {
 127         CONF_PAIR       *cp;
 128
 129         cp = (CONF_PAIR *)rad_malloc(sizeof(CONF_PAIR));
 130         memset(cp, 0, sizeof(CONF_PAIR));
 131         cp->item.type = CONF_ITEM_PAIR;
 132         cp->item.parent = parent;
 133         cp->attr = xstrdup(attr);
 134         cp->value = xstrdup(value);
 135         cp->operator = operator;
 136
 137         return cp;
 138 }
 139
 140 /*
 141  *      Free a CONF_PAIR
 142  */
 143 void cf_pair_free(CONF_PAIR **cp)
 144 {
 145         if (!cp || !*cp) return;
 146
 147         if ((*cp)->attr)
 148                 free((*cp)->attr);
 149         if ((*cp)->value)
 150                 free((*cp)->value);
 151
 152 #ifndef NDEBUG
 153         memset(*cp, 0, sizeof(*cp));
 154 #endif
 155         free(*cp);
 156
 157         *cp = NULL;
 158 }
 159
 160 /*
 161  *      Allocate a CONF_SECTION
 162  */
 163 static CONF_SECTION *cf_section_alloc(const char *name1, const char *name2,
 164                 CONF_SECTION *parent)
 165 {
 166         CONF_SECTION    *cs;
 167
 168         if (name1 == NULL || !name1[0])
 169                 name1 = "main";
 170
 171         cs = (CONF_SECTION *)rad_malloc(sizeof(CONF_SECTION));
 172         memset(cs, 0, sizeof(CONF_SECTION));
 173         cs->item.type = CONF_ITEM_SECTION;
 174         cs->item.parent = parent;
 175         cs->name1 = xstrdup(name1);
 176         cs->name2 = (name2 && *name2) ? xstrdup(name2) : NULL;
 177
 178         return cs;
 179 }
 180
 181 /*
 182  *      Free a CONF_SECTION
 183  */
 184 void cf_section_free(CONF_SECTION **cs)
 185 {
 186         CONF_ITEM       *ci, *next;
 187
 188         if (!cs || !*cs) return;
 189
 190         for (ci = (*cs)->children; ci; ci = next) {
 191                 next = ci->next;
 192                 if (ci->type==CONF_ITEM_PAIR) {
 193                         CONF_PAIR *pair = cf_itemtopair(ci);
 194                         cf_pair_free(&pair);
 195                 } else {
 196                         CONF_SECTION *section = cf_itemtosection(ci);
 197                         cf_section_free(&section);
 198                 }
 199         }
 200
 201         if ((*cs)->name1) free((*cs)->name1);
 202         if ((*cs)->name2) free((*cs)->name2);
 203
 204         /*
 205          * And free the section
 206          */
 207 #ifndef NDEBUG
 208         memset(*cs, 0, sizeof(*cs));
 209 #endif
 210         free(*cs);
 211
 212         *cs = NULL;
 213 }
 214
 215 /*
 216  *      Add an item to a configuration section.
 217  */
 218 static void cf_item_add(CONF_SECTION *cs, CONF_ITEM *ci_new)
 219 {
 220         CONF_ITEM *ci;
 221
 222         for (ci = cs->children; ci && ci->next; ci = ci->next)
 223                 ;
 224
 225         if (ci == NULL)
 226                 cs->children = ci_new;
 227         else
 228                 ci->next = ci_new;
 229 }
 230
 231 /*
 232  *      Expand the variables in an input string.
 233  */
 234 static const char *cf_expand_variables(const char *cf, int *lineno,
 235                                         CONF_SECTION *cs,
 236                                         char *output, const char *input)
 237 {
 238         char            *p;
 239         const char      *end, *ptr;
 240         char            name[1024];
 241         CONF_PAIR       *cpn;
 242         CONF_SECTION    *outercs;
 243
 244         p = output;
 245         ptr = input;
 246         while (*ptr >= ' ') {
 247                 /*
 248                  *      Ignore anything other than "${"
 249                  */
 250                 if ((*ptr != '$') || (ptr[1] != '{')) {
 251                         *(p++) = *(ptr++);
 252                         continue;
 253                 }
 254
 255                 /*
 256                  *      Look for trailing '}', and silently
 257                  *      ignore anything that doesn't match.
 258                  *
 259                  *      FIXME!  This is probably wrong...
 260                  */
 261                 end = strchr(ptr, '}');
 262                 if (end == NULL) {
 263                         *(p++) = *(ptr++);
 264                         continue;
 265                 }
 266
 267                 ptr += 2;
 268
 269                 memcpy(name, ptr, end - ptr);
 270                 name[end - ptr] = '\0';
 271
 272                 cpn = cf_pair_find(cs, name);
 273
 274                 /*
 275                  *      Also look recursively up the section tree,
 276                  *      so things like ${confdir} can be defined
 277                  *      there and used inside the module config
 278                  *      sections.
 279                  */
 280                 for (outercs=cs->item.parent;
 281                                 (cpn == NULL) && (outercs != NULL);
 282                                 outercs=outercs->item.parent) {
 283                         cpn = cf_pair_find(outercs, name);
 284                 }
 285                 if (!cpn) {
 286                         radlog(L_ERR, "%s[%d]: Unknown variable \"%s\"",
 287                                         cf, *lineno, name);
 288                         return NULL;
 289                 }
 290
 291                 /*
 292                  *  Substitute the value of the variable.
 293                  */
 294                 strcpy(p, cpn->value);
 295                 p += strlen(p);
 296                 ptr = end + 1;
 297         } /* loop over all of the input string. */
 298
 299         *p = '\0';
 300
 301         return output;
 302 }
 303
 304 /*
 305  *      Parse a configuration section into user-supplied variables.
 306  */
 307 int cf_section_parse(CONF_SECTION *cs, const CONF_PARSER *variables)
 308 {
 309         int             i;
 310         int             rcode;
 311         char            **q;
 312         CONF_PAIR       *cp;
 313         CONF_SECTION    *subsection;
 314         uint32_t        ipaddr;
 315         char            buffer[1024];
 316         const char      *value;
 317
 318         /*
 319          *      Handle the user-supplied variables.
 320          */
 321         for (i = 0; variables[i].name != NULL; i++) {
 322                 value = variables[i].dflt;
 323
 324                 cp = cf_pair_find(cs, variables[i].name);
 325                 if (cp) {
 326                         value = cp->value;
 327                 }
 328
 329                 switch (variables[i].type)
 330                 {
 331                 case PW_TYPE_SUBSECTION:
 332                         subsection = cf_section_sub_find(cs,variables[i].name);
 333
 334                         /*
 335                          *      If the configuration section is NOT there,
 336                          *      then ignore it.
 337                          *
 338                          *      FIXME! This is probably wrong... we should
 339                          *      probably set the items to their default values.
 340                          */
 341                         if (!subsection) {
 342                                 break;
 343                         }
 344
 345                         rcode = cf_section_parse(subsection,
 346                                                  (CONF_PARSER *) variables[i].data);
 347                         if (rcode < 0) {
 348                                 return -1;
 349                         }
 350                         break;
 351
 352                 case PW_TYPE_BOOLEAN:
 353                         /*
 354                          *      Allow yes/no and on/off
 355                          */
 356                         if ((strcasecmp(value, "yes") == 0) ||
 357                                         (strcasecmp(value, "on") == 0)) {
 358                                 *(int *)variables[i].data = 1;
 359                         } else if ((strcasecmp(value, "no") == 0) ||
 360                                                 (strcasecmp(value, "off") == 0)) {
 361                                 *(int *)variables[i].data = 0;
 362                         } else {
 363                                 *(int *)variables[i].data = 0;
 364                                 radlog(L_ERR, "Bad value \"%s\" for boolean variable %s", value, variables[i].name);
 365                                 return -1;
 366                         }
 367                         DEBUG2(" %s: %s = %s",
 368                                 cs->name1,
 369                                 variables[i].name,
 370                                 value);
 371                         break;
 372
 373                 case PW_TYPE_INTEGER:
 374                         *(int *)variables[i].data = strtol(value, 0, 0);
 375                         DEBUG2(" %s: %s = %d",
 376                                 cs->name1,
 377                                 variables[i].name,
 378                                 *(int *)variables[i].data);
 379                         break;
 380
 381                 case PW_TYPE_STRING_PTR:
 382                         q = (char **) variables[i].data;
 383                         if (*q != NULL) {
 384                                 free(*q);
 385                         }
 386
 387                         /*
 388                          *      Expand variables while parsing,
 389                          *      but ONLY expand ones which haven't already
 390                          *      been expanded.
 391                          */
 392                         if (value && (value == variables[i].dflt)) {
 393                                 value = cf_expand_variables(NULL, 0, cs, buffer,value);
 394                                 if (!value) {
 395                                         return -1;
 396                                 }
 397                         }
 398
 399                         DEBUG2(" %s: %s = \"%s\"",
 400                                 cs->name1,
 401                                 variables[i].name,
 402                                 value ? value : "(null)");
 403                         *q = value ? strdup(value) : NULL;
 404                         break;
 405
 406                 case PW_TYPE_IPADDR:
 407                         /*
 408                          *      Allow '*' as any address
 409                          */
 410                         if (strcmp(value, "*") == 0) {
 411                                 *(uint32_t *) variables[i].data = 0;
 412                                 break;
 413                         }
 414                         ipaddr = ip_getaddr(value);
 415                         if (ipaddr == 0) {
 416                                 radlog(L_ERR, "Can't find IP address for host %s", value);
 417                                 return -1;
 418                         }
 419                         DEBUG2(" %s: %s = %s IP address [%s]",
 420                                 cs->name1,
 421                                 variables[i].name,
 422                                 value, ip_ntoa(buffer, ipaddr));
 423                         *(uint32_t *) variables[i].data = ipaddr;
 424                         break;
 425
 426                 default:
 427                         radlog(L_ERR, "type %d not supported yet", variables[i].type);
 428                         return -1;
 429                         break;
 430                 } /* switch over variable type */
 431         } /* for all variables in the configuration section */
 432
 433         return 0;
 434 }
 435
 436 /*
 437  *      Read a part of the config file.
 438  */
 439 static CONF_SECTION *cf_section_read(const char *cf, int *lineno, FILE *fp,
 440                                         const char *name1, const char *name2,
 441                                         CONF_SECTION *parent)
 442 {
 443         CONF_SECTION    *cs, *css;
 444         CONF_PAIR       *cpn;
 445         char            *ptr;
 446         const char      *value;
 447         char            buf[8192];
 448         char            buf1[1024];
 449         char            buf2[1024];
 450         char            buf3[1024];
 451         int             t1, t2, t3;
 452
 453         /*
 454          *      Ensure that the user can't add CONF_SECTIONs
 455          *      with 'internal' names;
 456          */
 457         if ((name1 != NULL) && (name1[0] == '_')) {
 458                 radlog(L_ERR, "%s[%d]: Illegal configuration section name",
 459                         cf, *lineno);
 460                 return NULL;
 461         }
 462
 463         /*
 464          *      Allocate new section.
 465          */
 466         cs = cf_section_alloc(name1, name2, parent);
 467         cs->item.lineno = *lineno;
 468
 469         /*
 470          *      Read.
 471          */
 472         while (fgets(buf, sizeof(buf), fp) != NULL) {
 473                 (*lineno)++;
 474                 ptr = buf;
 475
 476                 t1 = gettoken(&ptr, buf1, sizeof(buf1));
 477
 478                 /*
 479                  *      Skip comments and blank lines immediately.
 480                  */
 481                 if ((*buf1 == '#') || (*buf1 == '\0')) {
 482                         continue;
 483                 }
 484
 485                 /*
 486                  *      Allow for $INCLUDE files
 487                  *
 488                  *      Currently this allows for includes only at the top
 489                  *      level of config.  IE you cannot have an $INCLUDE nested
 490                  *      inside section.  -cparker
 491                  */
 492                 if ((strcasecmp(buf1, "$INCLUDE") == 0) &&
 493                         (name1 == NULL) && (name2 == NULL)) {
 494
 495                         CONF_SECTION      *is;
 496
 497                         t2 = getword(&ptr, buf2, sizeof(buf2));
 498
 499                         value = cf_expand_variables(cf, lineno, cs, buf, buf2);
 500                         if (!value) {
 501                                 cf_section_free(&cs);
 502                                 return NULL;
 503                         }
 504
 505                         DEBUG2( "Config:   including file: %s", value );
 506
 507                         if ((is = conf_read(cf, *lineno, value)) == NULL) {
 508                                 cf_section_free(&cs);
 509                                 return NULL;
 510                         }
 511
 512                         /*
 513                         *       Add the included conf to our CONF_SECTION
 514                         */
 515                         if (is != NULL) {
 516                                 if (is->children != NULL) {
 517                                         cf_item_add(cs, is->children);
 518                                 } else {
 519                                         /* the file was empty */
 520                                         cf_section_free(&is);
 521                                 }
 522                         }
 523
 524                         continue;
 525                 }
 526
 527                 /*
 528                  *      No '=': must be a section or sub-section.
 529                  */
 530                 if (strchr(ptr, '=') == NULL) {
 531                         t2 = gettoken(&ptr, buf2, sizeof(buf2));
 532                         t3 = gettoken(&ptr, buf3, sizeof(buf3));
 533                 } else {
 534                         t2 = gettoken(&ptr, buf2, sizeof(buf2));
 535                         t3 = getword(&ptr, buf3, sizeof(buf3));
 536                 }
 537
 538                 /*
 539                  *      See if it's the end of a section.
 540                  */
 541                 if (t1 == T_RCBRACE) {
 542                         if (name1 == NULL || buf2[0]) {
 543                                 radlog(L_ERR, "%s[%d]: Unexpected end of section",
 544                                                 cf, *lineno);
 545                                 cf_section_free(&cs);
 546                                 return NULL;
 547                         }
 548                         return cs;
 549                 }
 550
 551                 /*
 552                  * Perhaps a subsection.
 553                  */
 554                 if (t2 == T_LCBRACE || t3 == T_LCBRACE) {
 555                         css = cf_section_read(cf, lineno, fp, buf1,
 556                                         t2==T_LCBRACE ? NULL : buf2, cs);
 557                         if (css == NULL) {
 558                                 cf_section_free(&cs);
 559                                 return NULL;
 560                         }
 561                         cf_item_add(cs, cf_sectiontoitem(css));
 562
 563                         continue;
 564                 }
 565
 566                 /*
 567                  *      Ignore semi-colons.
 568                  */
 569                 if (*buf2 == ';') *buf2 = '\0';
 570
 571                 /*
 572                  *      Must be a normal attr = value line.
 573                  */
 574                 if (buf1[0] != 0 && buf2[0] == 0 && buf3[0] == 0) {
 575                         t2 = T_OP_EQ;
 576                 } else if (buf1[0] == 0 || buf2[0] == 0 || buf3[0] == 0 ||
 577                                 (t2 < T_EQSTART || t2 > T_EQEND)) {
 578                         radlog(L_ERR, "%s[%d]: Line is not in 'attribute = value' format",
 579                                 cf, *lineno);
 580                         cf_section_free(&cs);
 581                         return NULL;
 582                 }
 583
 584                 /*
 585                  *      Ensure that the user can't add CONF_PAIRs
 586                  *      with 'internal' names;
 587                  */
 588                 if (buf1[0] == '_') {
 589                         radlog(L_ERR, "%s[%d]: Illegal configuration pair name \"%s\"",
 590                                 cf, *lineno, buf1);
 591                         cf_section_free(&cs);
 592                         return NULL;
 593                 }
 594
 595                 /*
 596                  *      Handle variable substitution via ${foo}
 597                  */
 598                 value = cf_expand_variables(cf, lineno, cs, buf, buf3);
 599                 if (!value) {
 600                         cf_section_free(&cs);
 601                         return NULL;
 602                 }
 603
 604
 605                 /*
 606                  *      Add this CONF_PAIR to our CONF_SECTION
 607                  */
 608                 cpn = cf_pair_alloc(buf1, value, t2, parent);
 609                 cpn->item.lineno = *lineno;
 610                 cf_item_add(cs, cf_pairtoitem(cpn));
 611         }
 612
 613         /*
 614          *      See if EOF was unexpected ..
 615          */
 616         if (name1 != NULL) {
 617                 radlog(L_ERR, "%s[%d]: Unexpected end of file", cf, *lineno);
 618                 cf_section_free(&cs);
 619                 return NULL;
 620         }
 621
 622         return cs;
 623 }
 624
 625 /*
 626  *      Read the config file.
 627  */
 628 static CONF_SECTION *conf_read(const char *fromfile, int fromline, const char *conffile)
 629 {
 630         FILE            *fp;
 631         int             lineno = 0;
 632         CONF_SECTION    *cs;
 633
 634         if ((fp = fopen(conffile, "r")) == NULL) {
 635                 if (fromfile) {
 636                         radlog(L_ERR|L_CONS, "%s[%d]: Unable to open file \"%s\": %s",
 637                                 fromfile, fromline, conffile, strerror(errno));
 638                 } else {
 639                         radlog(L_ERR|L_CONS, "Unable to open file \"%s\": %s",
 640                                 conffile, strerror(errno));
 641                 }
 642                 return NULL;
 643         }
 644
 645         cs = cf_section_read(conffile, &lineno, fp, NULL, NULL, NULL);
 646         fclose(fp);
 647
 648         return cs;
 649 }
 650
 651 /*
 652  *      These are not used anywhere else..
 653  */
 654 static const char *localstatedir = NULL;
 655 static const char *prefix = NULL;
 656
 657 static CONF_PARSER directory_config[] = {
 658   /*
 659    *    FIXME: 'prefix' is the ONLY one which should be configured
 660    *    at compile time.  Hard-coding it here is bad.  It will be cleaned
 661    *    up once we clean up the hard-coded defines for the locations of
 662    *    the various files.
 663    */
 664   {  "prefix",            PW_TYPE_STRING_PTR, &prefix,            "/usr/local"},
 665   { "localstatedir",      PW_TYPE_STRING_PTR, &localstatedir,     "${prefix}/var"},
 666   { "logdir",             PW_TYPE_STRING_PTR, &radlog_dir,        "${localstatedir}/log"},
 667   { "libdir",             PW_TYPE_STRING_PTR, &radlib_dir,        "${prefix}/lib"},
 668   { "radacctdir",         PW_TYPE_STRING_PTR, &radacct_dir,       "${logdir}/radacct" },
 669   { "hostname_lookups",   PW_TYPE_BOOLEAN,    &librad_dodns,      "no" },
 670
 671   /*
 672    *    We don't allow re-defining this, as doing so will cause
 673    *    all sorts of confusion.
 674    */
 675 #if 0
 676   { "confdir",            PW_TYPE_STRING_PTR, &radius_dir,        RADIUS_DIR },
 677 #endif
 678   { NULL, -1, NULL, NULL }
 679 };
 680
 681
 682 /* JLN
 683  * Read the configuration and library
 684  * This uses the new kind of configuration file as defined by
 685  * Miquel at http://www.miquels.cistron.nl/radius/
 686  */
 687
 688 int read_radius_conf_file(void)
 689 {
 690         char buffer[256];
 691         CONF_SECTION *cs;
 692
 693         /* Lets go look for the new configuration files */
 694         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 695         if ((cs = conf_read(NULL, 0, buffer)) == NULL) {
 696                 return -1;
 697         }
 698
 699         /*
 700          *      Free the old configuration data, and replace it
 701          *      with the new one.
 702          */
 703         cf_section_free(&config);
 704         config = cs;
 705
 706         /*
 707          *      And parse the directory configuration values.
 708          */
 709         cs = cf_section_find(NULL);
 710         if (!cs)
 711                 return -1;
 712
 713         /*
 714          *      This allows us to figure out where, relative to
 715          *      radiusd.conf, the other configuration files exist.
 716          */
 717         cf_section_parse(cs, directory_config);
 718
 719         /* Initialize the dictionary */
 720         DEBUG2("read_config_files:  reading dictionary");
 721         if (dict_init(radius_dir, RADIUS_DICTIONARY) != 0) {
 722                 radlog(L_ERR|L_CONS, "Errors reading dictionary: %s",
 723                         librad_errstr);
 724                 return -1;
 725         }
 726
 727         /* old-style clients file */
 728         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CLIENTS);
 729         DEBUG2("read_config_files:  reading clients");
 730         if (read_clients_file(buffer) < 0) {
 731                 radlog(L_ERR|L_CONS, "Errors reading clients");
 732                 return -1;
 733         }
 734
 735         /*
 736          *      Add to that, the *new* list of clients.
 737          */
 738         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 739         if (generate_clients(buffer) < 0) {
 740                 return -1;
 741         }
 742
 743         /* old-style realms file */
 744         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_REALMS);
 745         DEBUG2("read_config_files:  reading realms");
 746         if (read_realms_file(buffer) < 0) {
 747                 radlog(L_ERR|L_CONS, "Errors reading realms");
 748                 return -1;
 749         }
 750
 751         /*
 752          *      If there isn't any realms it isn't fatal..
 753          */
 754         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 755         if (generate_realms(buffer) < 0) {
 756                 return -1;
 757         }
 758
 759         /* old-style naslist file */
 760         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_NASLIST);
 761         DEBUG2("read_config_files:  reading naslist");
 762         if (read_naslist_file(buffer) < 0) {
 763                 radlog(L_ERR|L_CONS, "Errors reading naslist");
 764                 return -1;
 765         }
 766
 767         return 0;
 768 }
 769
 770 /* JLN
 771  * Create the linked list of realms from the new configuration type
 772  * This way we don't have to change to much in the other source-files
 773  */
 774
 775 static int generate_realms(const char *filename)
 776 {
 777         CONF_SECTION    *cs;
 778         REALM           *c;
 779         char            *s, *authhost, *accthost;
 780
 781         for (cs = cf_subsection_find_next(config, NULL, "realm"); cs != NULL;
 782                         cs = cf_subsection_find_next(config, cs, "realm")) {
 783                 if (!cs->name2) {
 784                         radlog(L_CONS|L_ERR, "%s[%d]: Missing realm name", filename, cs->item.lineno);
 785                         return -1;
 786                 }
 787                 /*
 788                  * We've found a realm, allocate space for it
 789                  */
 790                 c = rad_malloc(sizeof(REALM));
 791                 memset(c, 0, sizeof(REALM));
 792                 /*
 793                  * An authhost must exist in the configuration
 794                  */
 795                 if ((authhost = cf_section_value_find(cs, "authhost")) == NULL) {
 796                         radlog(L_CONS|L_ERR,
 797                                 "%s[%d]: No authhost entry in realm",
 798                                 filename, cs->item.lineno);
 799                         return -1;
 800                 }
 801                 if ((s = strchr(authhost, ':')) != NULL) {
 802                         *s++ = 0;
 803                         c->auth_port = atoi(s);
 804                 } else {
 805                         c->auth_port = auth_port;
 806                 }
 807                 accthost = cf_section_value_find(cs, "accthost");
 808                 if ((s =strchr(accthost, ':')) != NULL) {
 809                         *s++ = 0;
 810                         c->acct_port = atoi(s);
 811                 } else {
 812                         c->acct_port = acct_port;
 813                 }
 814                 if (strcmp(authhost, "LOCAL") != 0)
 815                         c->ipaddr = ip_getaddr(authhost);
 816
 817                 /*
 818                  * Double check length, just to be sure!
 819                  */
 820                 if (strlen(authhost) >= sizeof(c->server)) {
 821                         radlog(L_ERR, "%s[%d]: Server name of length %d is greater that allowed: %d",
 822                                         filename, cs->item.lineno,
 823                                         strlen(authhost), sizeof(c->server) - 1);
 824                         return -1;
 825                 }
 826                 if (strlen(cs->name2) >= sizeof(c->realm)) {
 827                         radlog(L_ERR, "%s[%d]: Realm name of length %d is greater than allowed %d",
 828                                         filename, cs->item.lineno,
 829                                         strlen(cs->name2), sizeof(c->server) - 1);
 830                         return -1;
 831                 }
 832
 833                 strcpy(c->realm, cs->name2);
 834                 strcpy(c->server, authhost);
 835
 836                 s = cf_section_value_find(cs, "secret");
 837                 if (s == NULL) {
 838                         radlog(L_ERR, "%s[%d]: No shared secret supplied for realm",
 839                                         filename, cs->item.lineno);
 840                         return -1;
 841                 }
 842
 843                 if (strlen(s) >= sizeof(c->secret)) {
 844                         radlog(L_ERR, "%s[%d]: Secret of length %d is greater than the allowed maximum of %d.",
 845                                         filename, cs->item.lineno,
 846                                         strlen(s), sizeof(c->secret) - 1);
 847                         return -1;
 848                 }
 849                 strNcpy((char *)c->secret, s, sizeof(c->secret));
 850
 851                 c->striprealm = 1;
 852
 853                 if ((cf_section_value_find(cs, "nostrip")) != NULL)
 854                         c->striprealm = 0;
 855                 if ((cf_section_value_find(cs, "noacct")) != NULL)
 856                         c->acct_port = 0;
 857                 if ((cf_section_value_find(cs, "trusted")) != NULL)
 858                         c->trusted = 1;
 859                 if ((cf_section_value_find(cs, "notrealm")) != NULL)
 860                         c->notrealm = 1;
 861                 if ((cf_section_value_find(cs, "notsuffix")) != NULL)
 862                         c->notrealm = 1;
 863
 864
 865                 c->next = realms;
 866                 realms = c;
 867
 868         }
 869
 870         return 0;
 871 }
 872
 873 /* JLN
 874  * Create the linked list of realms from the new configuration type
 875  * This way we don't have to change to much in the other source-files
 876  */
 877 static int generate_clients(const char *filename)
 878 {
 879         CONF_SECTION    *cs;
 880         RADCLIENT       *c;
 881         char            *hostnm, *secret, *shortnm, *netmask;
 882
 883         for (cs = cf_subsection_find_next(config, NULL, "client"); cs != NULL;
 884                         cs = cf_subsection_find_next(config, cs, "client")) {
 885                 if (!cs->name2) {
 886                         radlog(L_CONS|L_ERR, "%s[%d]: Missing client name", filename, cs->item.lineno);
 887                         return -1;
 888                 }
 889                 /*
 890                  * Check the lengths, we don't want any core dumps
 891                  */
 892                 hostnm = cs->name2;
 893                 secret = cf_section_value_find(cs, "secret");
 894                 shortnm = cf_section_value_find(cs, "shortname");
 895                 netmask = strchr(hostnm, '/');
 896
 897                 if (strlen(secret) >= sizeof(c->secret)) {
 898                         radlog(L_ERR, "%s[%d]: Secret of length %d is greater than the allowed maximum of %d.",
 899                                 filename, cs->item.lineno,
 900                                 strlen(secret), sizeof(c->secret) - 1);
 901                         return -1;
 902                 }
 903                 if (strlen(shortnm) > sizeof(c->shortname)) {
 904                         radlog(L_ERR, "%s[%d]: Client short name of length %d is greater than the allowed maximum of %d.",
 905                                         filename, cs->item.lineno,
 906                                         strlen(shortnm), sizeof(c->shortname) - 1);
 907                         return -1;
 908                 }
 909                 /*
 910                  * The size is fine.. Let's create the buffer
 911                  */
 912                 c = rad_malloc(sizeof(RADCLIENT));
 913
 914                 /*
 915                  *      Look for netmasks.
 916                  */
 917                 c->netmask = ~0;
 918                 if (netmask) {
 919                         int i, mask_length;
 920
 921                         mask_length = atoi(netmask + 1);
 922                         if ((mask_length <= 0) || (mask_length > 32)) {
 923                                 radlog(L_ERR, "%s[%d]: Invalid value '%s' for IP network mask.",
 924                                                 filename, cs->item.lineno, netmask + 1);
 925                                 return -1;
 926                         }
 927
 928                         c->netmask = (1 << 31);
 929                         for (i = 1; i < mask_length; i++) {
 930                                 c->netmask |= (c->netmask >> 1);
 931                         }
 932
 933                         *netmask = '\0';
 934                         c->netmask = htonl(c->netmask);
 935                 }
 936
 937                 c->ipaddr = ip_getaddr(hostnm);
 938                 if (c->ipaddr == INADDR_NONE) {
 939                         radlog(L_CONS|L_ERR, "%s[%d]: Failed to look up hostname %s",
 940                                         filename, cs->item.lineno, hostnm);
 941                         return -1;
 942                 }
 943
 944                 /*
 945                  *      Update the client name again...
 946                  */
 947                 if (netmask) {
 948                         *netmask = '/';
 949                         c->ipaddr &= c->netmask;
 950                         strcpy(c->longname, hostnm);
 951                 } else {
 952                         ip_hostname(c->longname, sizeof(c->longname),
 953                                         c->ipaddr);
 954                 }
 955
 956                 strcpy((char *)c->secret, secret);
 957                 strcpy(c->shortname, shortnm);
 958
 959                 c->next = clients;
 960                 clients = c;
 961         }
 962
 963         return 0;
 964 }
 965
 966 /*
 967  * Return a CONF_PAIR within a CONF_SECTION.
 968  */
 969
 970 CONF_PAIR *cf_pair_find(CONF_SECTION *section, const char *name)
 971 {
 972         CONF_ITEM       *ci;
 973
 974         if (section == NULL) {
 975           section = config;
 976         }
 977
 978         for (ci = section->children; ci; ci = ci->next) {
 979                 if (ci->type != CONF_ITEM_PAIR)
 980                         continue;
 981                 if (name == NULL || strcmp(cf_itemtopair(ci)->attr, name) == 0)
 982                         break;
 983         }
 984
 985         return cf_itemtopair(ci);
 986 }
 987
 988 /*
 989  * Return the attr of a CONF_PAIR
 990  */
 991
 992 char *cf_pair_attr(CONF_PAIR *pair)
 993 {
 994         return (pair ? pair->attr : NULL);
 995 }
 996
 997 /*
 998  * Return the value of a CONF_PAIR
 999  */
1000
1001 char *cf_pair_value(CONF_PAIR *pair)
1002 {
1003         return (pair ? pair->value : NULL);
1004 }
1005
1006 /*
1007  * Return the first label of a CONF_SECTION
1008  */
1009
1010 char *cf_section_name1(CONF_SECTION *section)
1011 {
1012         return (section ? section->name1 : NULL);
1013 }
1014
1015 /*
1016  * Return the second label of a CONF_SECTION
1017  */
1018
1019 char *cf_section_name2(CONF_SECTION *section)
1020 {
1021         return (section ? section->name2 : NULL);
1022 }
1023
1024 /*
1025  * Find a value in a CONF_SECTION
1026  */
1027 char *cf_section_value_find(CONF_SECTION *section, const char *attr)
1028 {
1029         CONF_PAIR       *cp;
1030
1031         cp = cf_pair_find(section, attr);
1032
1033         return (cp ? cp->value : NULL);
1034 }
1035
1036 /*
1037  * Return the next pair after a CONF_PAIR
1038  * with a certain name (char *attr) If the requested
1039  * attr is NULL, any attr matches.
1040  */
1041
1042 CONF_PAIR *cf_pair_find_next(CONF_SECTION *section, CONF_PAIR *pair, const char *attr)
1043 {
1044         CONF_ITEM       *ci;
1045
1046         /*
1047          * If pair is NULL this must be a first time run
1048          * Find the pair with correct name
1049          */
1050
1051         if (pair == NULL){
1052                 return cf_pair_find(section, attr);
1053         }
1054
1055         ci = cf_pairtoitem(pair)->next;
1056
1057         for (; ci; ci = ci->next) {
1058                 if (ci->type != CONF_ITEM_PAIR)
1059                         continue;
1060                 if (attr == NULL || strcmp(cf_itemtopair(ci)->attr, attr) == 0)
1061                         break;
1062         }
1063
1064         return cf_itemtopair(ci);
1065 }
1066
1067 /*
1068  * Find a CONF_SECTION, or return the root if name is NULL
1069  */
1070
1071 CONF_SECTION *cf_section_find(const char *name)
1072 {
1073         if (name)
1074                 return cf_section_sub_find(config, name);
1075         else
1076                 return config;
1077 }
1078
1079 /*
1080  * Find a sub-section in a section
1081  */
1082
1083 CONF_SECTION *cf_section_sub_find(CONF_SECTION *section, const char *name)
1084 {
1085
1086         CONF_ITEM *ci;
1087         for (ci = section->children; ci; ci = ci->next) {
1088                 if (ci->type != CONF_ITEM_SECTION)
1089                         continue;
1090                 if (strcmp(cf_itemtosection(ci)->name1, name) == 0)
1091                         break;
1092         }
1093
1094         return cf_itemtosection(ci);
1095
1096 }
1097
1098 /*
1099  * Return the next subsection after a CONF_SECTION
1100  * with a certain name1 (char *name1). If the requested
1101  * name1 is NULL, any name1 matches.
1102  */
1103
1104 CONF_SECTION *cf_subsection_find_next(CONF_SECTION *section,
1105                 CONF_SECTION *subsection,
1106                 const char *name1)
1107 {
1108         CONF_ITEM       *ci;
1109
1110         /*
1111          * If subsection is NULL this must be a first time run
1112          * Find the subsection with correct name
1113          */
1114
1115         if (subsection == NULL){
1116                 ci = section->children;
1117         } else {
1118                 ci = cf_sectiontoitem(subsection)->next;
1119         }
1120
1121         for (; ci; ci = ci->next) {
1122                 if (ci->type != CONF_ITEM_SECTION)
1123                         continue;
1124                 if ((name1 == NULL) ||
1125                                 (strcmp(cf_itemtosection(ci)->name1, name1) == 0))
1126                         break;
1127         }
1128
1129         return cf_itemtosection(ci);
1130 }
1131
1132 /*
1133  * Return the next item after a CONF_ITEM.
1134  */
1135
1136 CONF_ITEM *cf_item_find_next(CONF_SECTION *section, CONF_ITEM *item)
1137 {
1138         /*
1139          * If item is NULL this must be a first time run
1140          * Return the first item
1141          */
1142
1143         if (item == NULL) {
1144                 return section->children;
1145         } else {
1146                 return item->next;
1147         }
1148 }
1149
1150 int cf_section_lineno(CONF_SECTION *section)
1151 {
1152         return cf_sectiontoitem(section)->lineno;
1153 }
1154
1155 int cf_pair_lineno(CONF_PAIR *pair)
1156 {
1157         return cf_pairtoitem(pair)->lineno;
1158 }
1159
1160 int cf_item_is_section(CONF_ITEM *item)
1161 {
1162         return item->type == CONF_ITEM_SECTION;
1163 }
1164
1165
1166 /*
1167  * JMG dump_config tries to dump the config structure in a readable format
1168  *
1169 */
1170
1171 static int dump_config_section(CONF_SECTION *cs, int indent)
1172 {
1173         CONF_SECTION    *scs;
1174         CONF_PAIR       *cp;
1175         CONF_ITEM       *ci;
1176
1177         /* The DEBUG macro doesn't let me
1178          *   for(i=0;i<indent;++i) debugputchar('\t');
1179          * so I had to get creative. --Pac. */
1180
1181         for (ci = cs->children; ci; ci = ci->next) {
1182                 if (ci->type == CONF_ITEM_PAIR) {
1183                         cp=cf_itemtopair(ci);
1184                         DEBUG("%.*s%s = %s",
1185                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
1186                                 cp->attr, cp->value);
1187                 } else {
1188                         scs=cf_itemtosection(ci);
1189                         DEBUG("%.*s%s %s%s{",
1190                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
1191                                 scs->name1,
1192                                 scs->name2 ? scs->name2 : "",
1193                                 scs->name2 ?  " " : "");
1194                         dump_config_section(scs, indent+1);
1195                         DEBUG("%.*s}",
1196                                 indent, "\t\t\t\t\t\t\t\t\t\t\t");
1197                 }
1198         }
1199
1200         return 0;
1201 }
1202
1203 int dump_config(void)
1204 {
1205         return dump_config_section(config, 0);
1206 }