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 log a
 257                  *      warning for anything that doesn't match,
 258                  *      and exit with a fatal error.
 259                  */
 260                 end = strchr(ptr, '}');
 261                 if (end == NULL) {
 262                         *(p++) = *(ptr++);
 263                         radlog(L_INFO, "%s[%d]: Variable expansion missing }",
 264                                         cf, *lineno);
 265                         return NULL;
 266                 }
 267
 268                 ptr += 2;
 269
 270                 memcpy(name, ptr, end - ptr);
 271                 name[end - ptr] = '\0';
 272
 273                 cpn = cf_pair_find(cs, name);
 274
 275                 /*
 276                  *      Also look recursively up the section tree,
 277                  *      so things like ${confdir} can be defined
 278                  *      there and used inside the module config
 279                  *      sections.
 280                  */
 281                 for (outercs=cs->item.parent;
 282                                 (cpn == NULL) && (outercs != NULL);
 283                                 outercs=outercs->item.parent) {
 284                         cpn = cf_pair_find(outercs, name);
 285                 }
 286                 if (!cpn) {
 287                         radlog(L_ERR, "%s[%d]: Unknown variable \"%s\"",
 288                                         cf, *lineno, name);
 289                         return NULL;
 290                 }
 291
 292                 /*
 293                  *  Substitute the value of the variable.
 294                  */
 295                 strcpy(p, cpn->value);
 296                 p += strlen(p);
 297                 ptr = end + 1;
 298         } /* loop over all of the input string. */
 299
 300         *p = '\0';
 301
 302         return output;
 303 }
 304
 305 /*
 306  *      Parse a configuration section into user-supplied variables.
 307  */
 308 int cf_section_parse(CONF_SECTION *cs, const CONF_PARSER *variables)
 309 {
 310         int             i;
 311         int             rcode;
 312         char            **q;
 313         CONF_PAIR       *cp;
 314         CONF_SECTION    *subsection;
 315         uint32_t        ipaddr;
 316         char            buffer[1024];
 317         const char      *value;
 318
 319         /*
 320          *      Handle the user-supplied variables.
 321          */
 322         for (i = 0; variables[i].name != NULL; i++) {
 323                 value = variables[i].dflt;
 324
 325                 cp = cf_pair_find(cs, variables[i].name);
 326                 if (cp) {
 327                         value = cp->value;
 328                 }
 329
 330                 switch (variables[i].type)
 331                 {
 332                 case PW_TYPE_SUBSECTION:
 333                         subsection = cf_section_sub_find(cs,variables[i].name);
 334
 335                         /*
 336                          *      If the configuration section is NOT there,
 337                          *      then ignore it.
 338                          *
 339                          *      FIXME! This is probably wrong... we should
 340                          *      probably set the items to their default values.
 341                          */
 342                         if (!subsection) {
 343                                 break;
 344                         }
 345
 346                         rcode = cf_section_parse(subsection,
 347                                                  (CONF_PARSER *) variables[i].data);
 348                         if (rcode < 0) {
 349                                 return -1;
 350                         }
 351                         break;
 352
 353                 case PW_TYPE_BOOLEAN:
 354                         /*
 355                          *      Allow yes/no and on/off
 356                          */
 357                         if ((strcasecmp(value, "yes") == 0) ||
 358                                         (strcasecmp(value, "on") == 0)) {
 359                                 *(int *)variables[i].data = 1;
 360                         } else if ((strcasecmp(value, "no") == 0) ||
 361                                                 (strcasecmp(value, "off") == 0)) {
 362                                 *(int *)variables[i].data = 0;
 363                         } else {
 364                                 *(int *)variables[i].data = 0;
 365                                 radlog(L_ERR, "Bad value \"%s\" for boolean variable %s", value, variables[i].name);
 366                                 return -1;
 367                         }
 368                         DEBUG2(" %s: %s = %s",
 369                                 cs->name1,
 370                                 variables[i].name,
 371                                 value);
 372                         break;
 373
 374                 case PW_TYPE_INTEGER:
 375                         *(int *)variables[i].data = strtol(value, 0, 0);
 376                         DEBUG2(" %s: %s = %d",
 377                                 cs->name1,
 378                                 variables[i].name,
 379                                 *(int *)variables[i].data);
 380                         break;
 381
 382                 case PW_TYPE_STRING_PTR:
 383                         q = (char **) variables[i].data;
 384                         if (*q != NULL) {
 385                                 free(*q);
 386                         }
 387
 388                         /*
 389                          *      Expand variables while parsing,
 390                          *      but ONLY expand ones which haven't already
 391                          *      been expanded.
 392                          */
 393                         if (value && (value == variables[i].dflt)) {
 394                                 value = cf_expand_variables(NULL, 0, cs, buffer,value);
 395                                 if (!value) {
 396                                         return -1;
 397                                 }
 398                         }
 399
 400                         DEBUG2(" %s: %s = \"%s\"",
 401                                 cs->name1,
 402                                 variables[i].name,
 403                                 value ? value : "(null)");
 404                         *q = value ? strdup(value) : NULL;
 405                         break;
 406
 407                 case PW_TYPE_IPADDR:
 408                         /*
 409                          *      Allow '*' as any address
 410                          */
 411                         if (strcmp(value, "*") == 0) {
 412                                 *(uint32_t *) variables[i].data = 0;
 413                                 break;
 414                         }
 415                         ipaddr = ip_getaddr(value);
 416                         if (ipaddr == 0) {
 417                                 radlog(L_ERR, "Can't find IP address for host %s", value);
 418                                 return -1;
 419                         }
 420                         DEBUG2(" %s: %s = %s IP address [%s]",
 421                                 cs->name1,
 422                                 variables[i].name,
 423                                 value, ip_ntoa(buffer, ipaddr));
 424                         *(uint32_t *) variables[i].data = ipaddr;
 425                         break;
 426
 427                 default:
 428                         radlog(L_ERR, "type %d not supported yet", variables[i].type);
 429                         return -1;
 430                         break;
 431                 } /* switch over variable type */
 432         } /* for all variables in the configuration section */
 433
 434         return 0;
 435 }
 436
 437 /*
 438  *      Read a part of the config file.
 439  */
 440 static CONF_SECTION *cf_section_read(const char *cf, int *lineno, FILE *fp,
 441                                         const char *name1, const char *name2,
 442                                         CONF_SECTION *parent)
 443 {
 444         CONF_SECTION    *cs, *css;
 445         CONF_PAIR       *cpn;
 446         char            *ptr;
 447         const char      *value;
 448         char            buf[8192];
 449         char            buf1[1024];
 450         char            buf2[1024];
 451         char            buf3[1024];
 452         int             t1, t2, t3;
 453
 454         /*
 455          *      Ensure that the user can't add CONF_SECTIONs
 456          *      with 'internal' names;
 457          */
 458         if ((name1 != NULL) && (name1[0] == '_')) {
 459                 radlog(L_ERR, "%s[%d]: Illegal configuration section name",
 460                         cf, *lineno);
 461                 return NULL;
 462         }
 463
 464         /*
 465          *      Allocate new section.
 466          */
 467         cs = cf_section_alloc(name1, name2, parent);
 468         cs->item.lineno = *lineno;
 469
 470         /*
 471          *      Read.
 472          */
 473         while (fgets(buf, sizeof(buf), fp) != NULL) {
 474                 (*lineno)++;
 475                 ptr = buf;
 476
 477                 t1 = gettoken(&ptr, buf1, sizeof(buf1));
 478
 479                 /*
 480                  *      Skip comments and blank lines immediately.
 481                  */
 482                 if ((*buf1 == '#') || (*buf1 == '\0')) {
 483                         continue;
 484                 }
 485
 486                 /*
 487                  *      Allow for $INCLUDE files
 488                  *
 489                  *      Currently this allows for includes only at the top
 490                  *      level of config.  IE you cannot have an $INCLUDE nested
 491                  *      inside section.  -cparker
 492                  */
 493                 if ((strcasecmp(buf1, "$INCLUDE") == 0) &&
 494                         (name1 == NULL) && (name2 == NULL)) {
 495
 496                         CONF_SECTION      *is;
 497
 498                         t2 = getword(&ptr, buf2, sizeof(buf2));
 499
 500                         value = cf_expand_variables(cf, lineno, cs, buf, buf2);
 501                         if (!value) {
 502                                 cf_section_free(&cs);
 503                                 return NULL;
 504                         }
 505
 506                         DEBUG2( "Config:   including file: %s", value );
 507
 508                         if ((is = conf_read(cf, *lineno, value)) == NULL) {
 509                                 cf_section_free(&cs);
 510                                 return NULL;
 511                         }
 512
 513                         /*
 514                          *      Add the included conf to our CONF_SECTION
 515                          */
 516                         if (is != NULL) {
 517                                 if (is->children != NULL) {
 518                                         CONF_ITEM *ci;
 519
 520                                         /*
 521                                          *      Re-write the parent of the
 522                                          *      moved children to be the
 523                                          *      upper-layer section.
 524                                          */
 525                                         for (ci = is->children; ci; ci = ci->next) {
 526                                                 ci->parent = cs;
 527                                         }
 528
 529                                         /*
 530                                          *      If there are children, then
 531                                          *      move them up a layer.
 532                                          */
 533                                         if (is->children) {
 534                                                 cf_item_add(cs, is->children);
 535                                         }
 536                                         is->children = NULL;
 537                                 }
 538                                 /*
 539                                  *      Always free the section for the
 540                                  *      $INCLUDEd file.
 541                                  */
 542                                 cf_section_free(&is);
 543                         }
 544
 545                         continue;
 546                 }
 547
 548                 /*
 549                  *      No '=': must be a section or sub-section.
 550                  */
 551                 if (strchr(ptr, '=') == NULL) {
 552                         t2 = gettoken(&ptr, buf2, sizeof(buf2));
 553                         t3 = gettoken(&ptr, buf3, sizeof(buf3));
 554                 } else {
 555                         t2 = gettoken(&ptr, buf2, sizeof(buf2));
 556                         t3 = getword(&ptr, buf3, sizeof(buf3));
 557                 }
 558
 559                 /*
 560                  *      See if it's the end of a section.
 561                  */
 562                 if (t1 == T_RCBRACE) {
 563                         if (name1 == NULL || buf2[0]) {
 564                                 radlog(L_ERR, "%s[%d]: Unexpected end of section",
 565                                                 cf, *lineno);
 566                                 cf_section_free(&cs);
 567                                 return NULL;
 568                         }
 569                         return cs;
 570                 }
 571
 572                 /*
 573                  * Perhaps a subsection.
 574                  */
 575                 if (t2 == T_LCBRACE || t3 == T_LCBRACE) {
 576                         css = cf_section_read(cf, lineno, fp, buf1,
 577                                         t2==T_LCBRACE ? NULL : buf2, cs);
 578                         if (css == NULL) {
 579                                 cf_section_free(&cs);
 580                                 return NULL;
 581                         }
 582                         cf_item_add(cs, cf_sectiontoitem(css));
 583
 584                         continue;
 585                 }
 586
 587                 /*
 588                  *      Ignore semi-colons.
 589                  */
 590                 if (*buf2 == ';') *buf2 = '\0';
 591
 592                 /*
 593                  *      Must be a normal attr = value line.
 594                  */
 595                 if (buf1[0] != 0 && buf2[0] == 0 && buf3[0] == 0) {
 596                         t2 = T_OP_EQ;
 597                 } else if (buf1[0] == 0 || buf2[0] == 0 || buf3[0] == 0 ||
 598                                 (t2 < T_EQSTART || t2 > T_EQEND)) {
 599                         radlog(L_ERR, "%s[%d]: Line is not in 'attribute = value' format",
 600                                 cf, *lineno);
 601                         cf_section_free(&cs);
 602                         return NULL;
 603                 }
 604
 605                 /*
 606                  *      Ensure that the user can't add CONF_PAIRs
 607                  *      with 'internal' names;
 608                  */
 609                 if (buf1[0] == '_') {
 610                         radlog(L_ERR, "%s[%d]: Illegal configuration pair name \"%s\"",
 611                                 cf, *lineno, buf1);
 612                         cf_section_free(&cs);
 613                         return NULL;
 614                 }
 615
 616                 /*
 617                  *      Handle variable substitution via ${foo}
 618                  */
 619                 value = cf_expand_variables(cf, lineno, cs, buf, buf3);
 620                 if (!value) {
 621                         cf_section_free(&cs);
 622                         return NULL;
 623                 }
 624
 625
 626                 /*
 627                  *      Add this CONF_PAIR to our CONF_SECTION
 628                  */
 629                 cpn = cf_pair_alloc(buf1, value, t2, parent);
 630                 cpn->item.lineno = *lineno;
 631                 cf_item_add(cs, cf_pairtoitem(cpn));
 632         }
 633
 634         /*
 635          *      See if EOF was unexpected ..
 636          */
 637         if (name1 != NULL) {
 638                 radlog(L_ERR, "%s[%d]: Unexpected end of file", cf, *lineno);
 639                 cf_section_free(&cs);
 640                 return NULL;
 641         }
 642
 643         return cs;
 644 }
 645
 646 /*
 647  *      Read the config file.
 648  */
 649 static CONF_SECTION *conf_read(const char *fromfile, int fromline, const char *conffile)
 650 {
 651         FILE            *fp;
 652         int             lineno = 0;
 653         CONF_SECTION    *cs;
 654
 655         if ((fp = fopen(conffile, "r")) == NULL) {
 656                 if (fromfile) {
 657                         radlog(L_ERR|L_CONS, "%s[%d]: Unable to open file \"%s\": %s",
 658                                 fromfile, fromline, conffile, strerror(errno));
 659                 } else {
 660                         radlog(L_ERR|L_CONS, "Unable to open file \"%s\": %s",
 661                                 conffile, strerror(errno));
 662                 }
 663                 return NULL;
 664         }
 665
 666         cs = cf_section_read(conffile, &lineno, fp, NULL, NULL, NULL);
 667         fclose(fp);
 668
 669         return cs;
 670 }
 671
 672 /*
 673  *      These are not used anywhere else..
 674  */
 675 static const char *localstatedir = NULL;
 676 static const char *prefix = NULL;
 677
 678 static CONF_PARSER directory_config[] = {
 679   /*
 680    *    FIXME: 'prefix' is the ONLY one which should be configured
 681    *    at compile time.  Hard-coding it here is bad.  It will be cleaned
 682    *    up once we clean up the hard-coded defines for the locations of
 683    *    the various files.
 684    */
 685   {  "prefix",            PW_TYPE_STRING_PTR, &prefix,            "/usr/local"},
 686   { "localstatedir",      PW_TYPE_STRING_PTR, &localstatedir,     "${prefix}/var"},
 687   { "logdir",             PW_TYPE_STRING_PTR, &radlog_dir,        "${localstatedir}/log"},
 688   { "libdir",             PW_TYPE_STRING_PTR, &radlib_dir,        "${prefix}/lib"},
 689   { "radacctdir",         PW_TYPE_STRING_PTR, &radacct_dir,       "${logdir}/radacct" },
 690   { "hostname_lookups",   PW_TYPE_BOOLEAN,    &librad_dodns,      "no" },
 691
 692   /*
 693    *    We don't allow re-defining this, as doing so will cause
 694    *    all sorts of confusion.
 695    */
 696 #if 0
 697   { "confdir",            PW_TYPE_STRING_PTR, &radius_dir,        RADIUS_DIR },
 698 #endif
 699   { NULL, -1, NULL, NULL }
 700 };
 701
 702
 703 /* JLN
 704  * Read the configuration and library
 705  * This uses the new kind of configuration file as defined by
 706  * Miquel at http://www.miquels.cistron.nl/radius/
 707  */
 708
 709 int read_radius_conf_file(void)
 710 {
 711         char buffer[256];
 712         CONF_SECTION *cs;
 713
 714         /* Lets go look for the new configuration files */
 715         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 716         if ((cs = conf_read(NULL, 0, buffer)) == NULL) {
 717                 return -1;
 718         }
 719
 720         /*
 721          *      Free the old configuration data, and replace it
 722          *      with the new one.
 723          */
 724         cf_section_free(&config);
 725         config = cs;
 726
 727         /*
 728          *      And parse the directory configuration values.
 729          */
 730         cs = cf_section_find(NULL);
 731         if (!cs)
 732                 return -1;
 733
 734         /*
 735          *      This allows us to figure out where, relative to
 736          *      radiusd.conf, the other configuration files exist.
 737          */
 738         cf_section_parse(cs, directory_config);
 739
 740         /* Initialize the dictionary */
 741         DEBUG2("read_config_files:  reading dictionary");
 742         if (dict_init(radius_dir, RADIUS_DICTIONARY) != 0) {
 743                 radlog(L_ERR|L_CONS, "Errors reading dictionary: %s",
 744                         librad_errstr);
 745                 return -1;
 746         }
 747
 748         /* old-style clients file */
 749         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CLIENTS);
 750         DEBUG2("read_config_files:  reading clients");
 751         if (read_clients_file(buffer) < 0) {
 752                 radlog(L_ERR|L_CONS, "Errors reading clients");
 753                 return -1;
 754         }
 755
 756         /*
 757          *      Add to that, the *new* list of clients.
 758          */
 759         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 760         if (generate_clients(buffer) < 0) {
 761                 return -1;
 762         }
 763
 764         /* old-style realms file */
 765         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_REALMS);
 766         DEBUG2("read_config_files:  reading realms");
 767         if (read_realms_file(buffer) < 0) {
 768                 radlog(L_ERR|L_CONS, "Errors reading realms");
 769                 return -1;
 770         }
 771
 772         /*
 773          *      If there isn't any realms it isn't fatal..
 774          */
 775         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_CONFIG);
 776         if (generate_realms(buffer) < 0) {
 777                 return -1;
 778         }
 779
 780         /* old-style naslist file */
 781         sprintf(buffer, "%.200s/%.50s", radius_dir, RADIUS_NASLIST);
 782         DEBUG2("read_config_files:  reading naslist");
 783         if (read_naslist_file(buffer) < 0) {
 784                 radlog(L_ERR|L_CONS, "Errors reading naslist");
 785                 return -1;
 786         }
 787
 788         return 0;
 789 }
 790
 791 /* JLN
 792  * Create the linked list of realms from the new configuration type
 793  * This way we don't have to change to much in the other source-files
 794  */
 795
 796 static int generate_realms(const char *filename)
 797 {
 798         CONF_SECTION    *cs;
 799         REALM           *c;
 800         char            *s, *authhost, *accthost;
 801
 802         for (cs = cf_subsection_find_next(config, NULL, "realm"); cs != NULL;
 803                         cs = cf_subsection_find_next(config, cs, "realm")) {
 804                 if (!cs->name2) {
 805                         radlog(L_CONS|L_ERR, "%s[%d]: Missing realm name", filename, cs->item.lineno);
 806                         return -1;
 807                 }
 808                 /*
 809                  * We've found a realm, allocate space for it
 810                  */
 811                 c = rad_malloc(sizeof(REALM));
 812                 memset(c, 0, sizeof(REALM));
 813                 /*
 814                  * An authhost must exist in the configuration
 815                  */
 816                 if ((authhost = cf_section_value_find(cs, "authhost")) == NULL) {
 817                         radlog(L_CONS|L_ERR,
 818                                 "%s[%d]: No authhost entry in realm",
 819                                 filename, cs->item.lineno);
 820                         return -1;
 821                 }
 822                 if ((s = strchr(authhost, ':')) != NULL) {
 823                         *s++ = 0;
 824                         c->auth_port = atoi(s);
 825                 } else {
 826                         c->auth_port = auth_port;
 827                 }
 828                 accthost = cf_section_value_find(cs, "accthost");
 829                 if ((s =strchr(accthost, ':')) != NULL) {
 830                         *s++ = 0;
 831                         c->acct_port = atoi(s);
 832                 } else {
 833                         c->acct_port = acct_port;
 834                 }
 835                 if (strcmp(authhost, "LOCAL") != 0)
 836                         c->ipaddr = ip_getaddr(authhost);
 837
 838                 /*
 839                  * Double check length, just to be sure!
 840                  */
 841                 if (strlen(authhost) >= sizeof(c->server)) {
 842                         radlog(L_ERR, "%s[%d]: Server name of length %d is greater that allowed: %d",
 843                                         filename, cs->item.lineno,
 844                                         strlen(authhost), sizeof(c->server) - 1);
 845                         return -1;
 846                 }
 847                 if (strlen(cs->name2) >= sizeof(c->realm)) {
 848                         radlog(L_ERR, "%s[%d]: Realm name of length %d is greater than allowed %d",
 849                                         filename, cs->item.lineno,
 850                                         strlen(cs->name2), sizeof(c->server) - 1);
 851                         return -1;
 852                 }
 853
 854                 strcpy(c->realm, cs->name2);
 855                 strcpy(c->server, authhost);
 856
 857                 s = cf_section_value_find(cs, "secret");
 858                 if (s == NULL) {
 859                         radlog(L_ERR, "%s[%d]: No shared secret supplied for realm",
 860                                         filename, cs->item.lineno);
 861                         return -1;
 862                 }
 863
 864                 if (strlen(s) >= sizeof(c->secret)) {
 865                         radlog(L_ERR, "%s[%d]: Secret of length %d is greater than the allowed maximum of %d.",
 866                                         filename, cs->item.lineno,
 867                                         strlen(s), sizeof(c->secret) - 1);
 868                         return -1;
 869                 }
 870                 strNcpy((char *)c->secret, s, sizeof(c->secret));
 871
 872                 c->striprealm = 1;
 873
 874                 if ((cf_section_value_find(cs, "nostrip")) != NULL)
 875                         c->striprealm = 0;
 876                 if ((cf_section_value_find(cs, "noacct")) != NULL)
 877                         c->acct_port = 0;
 878                 if ((cf_section_value_find(cs, "trusted")) != NULL)
 879                         c->trusted = 1;
 880                 if ((cf_section_value_find(cs, "notrealm")) != NULL)
 881                         c->notrealm = 1;
 882                 if ((cf_section_value_find(cs, "notsuffix")) != NULL)
 883                         c->notrealm = 1;
 884
 885
 886                 c->next = realms;
 887                 realms = c;
 888
 889         }
 890
 891         return 0;
 892 }
 893
 894 /* JLN
 895  * Create the linked list of realms from the new configuration type
 896  * This way we don't have to change to much in the other source-files
 897  */
 898 static int generate_clients(const char *filename)
 899 {
 900         CONF_SECTION    *cs;
 901         RADCLIENT       *c;
 902         char            *hostnm, *secret, *shortnm, *netmask;
 903
 904         for (cs = cf_subsection_find_next(config, NULL, "client"); cs != NULL;
 905                         cs = cf_subsection_find_next(config, cs, "client")) {
 906                 if (!cs->name2) {
 907                         radlog(L_CONS|L_ERR, "%s[%d]: Missing client name", filename, cs->item.lineno);
 908                         return -1;
 909                 }
 910                 /*
 911                  * Check the lengths, we don't want any core dumps
 912                  */
 913                 hostnm = cs->name2;
 914                 secret = cf_section_value_find(cs, "secret");
 915                 shortnm = cf_section_value_find(cs, "shortname");
 916                 netmask = strchr(hostnm, '/');
 917
 918                 if (strlen(secret) >= sizeof(c->secret)) {
 919                         radlog(L_ERR, "%s[%d]: Secret of length %d is greater than the allowed maximum of %d.",
 920                                 filename, cs->item.lineno,
 921                                 strlen(secret), sizeof(c->secret) - 1);
 922                         return -1;
 923                 }
 924                 if (strlen(shortnm) > sizeof(c->shortname)) {
 925                         radlog(L_ERR, "%s[%d]: Client short name of length %d is greater than the allowed maximum of %d.",
 926                                         filename, cs->item.lineno,
 927                                         strlen(shortnm), sizeof(c->shortname) - 1);
 928                         return -1;
 929                 }
 930                 /*
 931                  * The size is fine.. Let's create the buffer
 932                  */
 933                 c = rad_malloc(sizeof(RADCLIENT));
 934
 935                 /*
 936                  *      Look for netmasks.
 937                  */
 938                 c->netmask = ~0;
 939                 if (netmask) {
 940                         int i, mask_length;
 941
 942                         mask_length = atoi(netmask + 1);
 943                         if ((mask_length <= 0) || (mask_length > 32)) {
 944                                 radlog(L_ERR, "%s[%d]: Invalid value '%s' for IP network mask.",
 945                                                 filename, cs->item.lineno, netmask + 1);
 946                                 return -1;
 947                         }
 948
 949                         c->netmask = (1 << 31);
 950                         for (i = 1; i < mask_length; i++) {
 951                                 c->netmask |= (c->netmask >> 1);
 952                         }
 953
 954                         *netmask = '\0';
 955                         c->netmask = htonl(c->netmask);
 956                 }
 957
 958                 c->ipaddr = ip_getaddr(hostnm);
 959                 if (c->ipaddr == INADDR_NONE) {
 960                         radlog(L_CONS|L_ERR, "%s[%d]: Failed to look up hostname %s",
 961                                         filename, cs->item.lineno, hostnm);
 962                         return -1;
 963                 }
 964
 965                 /*
 966                  *      Update the client name again...
 967                  */
 968                 if (netmask) {
 969                         *netmask = '/';
 970                         c->ipaddr &= c->netmask;
 971                         strcpy(c->longname, hostnm);
 972                 } else {
 973                         ip_hostname(c->longname, sizeof(c->longname),
 974                                         c->ipaddr);
 975                 }
 976
 977                 strcpy((char *)c->secret, secret);
 978                 strcpy(c->shortname, shortnm);
 979
 980                 c->next = clients;
 981                 clients = c;
 982         }
 983
 984         return 0;
 985 }
 986
 987 /*
 988  * Return a CONF_PAIR within a CONF_SECTION.
 989  */
 990
 991 CONF_PAIR *cf_pair_find(CONF_SECTION *section, const char *name)
 992 {
 993         CONF_ITEM       *ci;
 994
 995         if (section == NULL) {
 996           section = config;
 997         }
 998
 999         for (ci = section->children; ci; ci = ci->next) {
1000                 if (ci->type != CONF_ITEM_PAIR)
1001                         continue;
1002                 if (name == NULL || strcmp(cf_itemtopair(ci)->attr, name) == 0)
1003                         break;
1004         }
1005
1006         return cf_itemtopair(ci);
1007 }
1008
1009 /*
1010  * Return the attr of a CONF_PAIR
1011  */
1012
1013 char *cf_pair_attr(CONF_PAIR *pair)
1014 {
1015         return (pair ? pair->attr : NULL);
1016 }
1017
1018 /*
1019  * Return the value of a CONF_PAIR
1020  */
1021
1022 char *cf_pair_value(CONF_PAIR *pair)
1023 {
1024         return (pair ? pair->value : NULL);
1025 }
1026
1027 /*
1028  * Return the first label of a CONF_SECTION
1029  */
1030
1031 char *cf_section_name1(CONF_SECTION *section)
1032 {
1033         return (section ? section->name1 : NULL);
1034 }
1035
1036 /*
1037  * Return the second label of a CONF_SECTION
1038  */
1039
1040 char *cf_section_name2(CONF_SECTION *section)
1041 {
1042         return (section ? section->name2 : NULL);
1043 }
1044
1045 /*
1046  * Find a value in a CONF_SECTION
1047  */
1048 char *cf_section_value_find(CONF_SECTION *section, const char *attr)
1049 {
1050         CONF_PAIR       *cp;
1051
1052         cp = cf_pair_find(section, attr);
1053
1054         return (cp ? cp->value : NULL);
1055 }
1056
1057 /*
1058  * Return the next pair after a CONF_PAIR
1059  * with a certain name (char *attr) If the requested
1060  * attr is NULL, any attr matches.
1061  */
1062
1063 CONF_PAIR *cf_pair_find_next(CONF_SECTION *section, CONF_PAIR *pair, const char *attr)
1064 {
1065         CONF_ITEM       *ci;
1066
1067         /*
1068          * If pair is NULL this must be a first time run
1069          * Find the pair with correct name
1070          */
1071
1072         if (pair == NULL){
1073                 return cf_pair_find(section, attr);
1074         }
1075
1076         ci = cf_pairtoitem(pair)->next;
1077
1078         for (; ci; ci = ci->next) {
1079                 if (ci->type != CONF_ITEM_PAIR)
1080                         continue;
1081                 if (attr == NULL || strcmp(cf_itemtopair(ci)->attr, attr) == 0)
1082                         break;
1083         }
1084
1085         return cf_itemtopair(ci);
1086 }
1087
1088 /*
1089  * Find a CONF_SECTION, or return the root if name is NULL
1090  */
1091
1092 CONF_SECTION *cf_section_find(const char *name)
1093 {
1094         if (name)
1095                 return cf_section_sub_find(config, name);
1096         else
1097                 return config;
1098 }
1099
1100 /*
1101  * Find a sub-section in a section
1102  */
1103
1104 CONF_SECTION *cf_section_sub_find(CONF_SECTION *section, const char *name)
1105 {
1106         CONF_ITEM *ci;
1107
1108         for (ci = section->children; ci; ci = ci->next) {
1109                 if (ci->type != CONF_ITEM_SECTION)
1110                         continue;
1111                 if (strcmp(cf_itemtosection(ci)->name1, name) == 0)
1112                         break;
1113         }
1114
1115         return cf_itemtosection(ci);
1116
1117 }
1118
1119 /*
1120  * Return the next subsection after a CONF_SECTION
1121  * with a certain name1 (char *name1). If the requested
1122  * name1 is NULL, any name1 matches.
1123  */
1124
1125 CONF_SECTION *cf_subsection_find_next(CONF_SECTION *section,
1126                 CONF_SECTION *subsection,
1127                 const char *name1)
1128 {
1129         CONF_ITEM       *ci;
1130
1131         /*
1132          * If subsection is NULL this must be a first time run
1133          * Find the subsection with correct name
1134          */
1135
1136         if (subsection == NULL){
1137                 ci = section->children;
1138         } else {
1139                 ci = cf_sectiontoitem(subsection)->next;
1140         }
1141
1142         for (; ci; ci = ci->next) {
1143                 if (ci->type != CONF_ITEM_SECTION)
1144                         continue;
1145                 if ((name1 == NULL) ||
1146                                 (strcmp(cf_itemtosection(ci)->name1, name1) == 0))
1147                         break;
1148         }
1149
1150         return cf_itemtosection(ci);
1151 }
1152
1153 /*
1154  * Return the next item after a CONF_ITEM.
1155  */
1156
1157 CONF_ITEM *cf_item_find_next(CONF_SECTION *section, CONF_ITEM *item)
1158 {
1159         /*
1160          * If item is NULL this must be a first time run
1161          * Return the first item
1162          */
1163
1164         if (item == NULL) {
1165                 return section->children;
1166         } else {
1167                 return item->next;
1168         }
1169 }
1170
1171 int cf_section_lineno(CONF_SECTION *section)
1172 {
1173         return cf_sectiontoitem(section)->lineno;
1174 }
1175
1176 int cf_pair_lineno(CONF_PAIR *pair)
1177 {
1178         return cf_pairtoitem(pair)->lineno;
1179 }
1180
1181 int cf_item_is_section(CONF_ITEM *item)
1182 {
1183         return item->type == CONF_ITEM_SECTION;
1184 }
1185
1186
1187 /*
1188  * JMG dump_config tries to dump the config structure in a readable format
1189  *
1190 */
1191
1192 static int dump_config_section(CONF_SECTION *cs, int indent)
1193 {
1194         CONF_SECTION    *scs;
1195         CONF_PAIR       *cp;
1196         CONF_ITEM       *ci;
1197
1198         /* The DEBUG macro doesn't let me
1199          *   for(i=0;i<indent;++i) debugputchar('\t');
1200          * so I had to get creative. --Pac. */
1201
1202         for (ci = cs->children; ci; ci = ci->next) {
1203                 if (ci->type == CONF_ITEM_PAIR) {
1204                         cp=cf_itemtopair(ci);
1205                         DEBUG("%.*s%s = %s",
1206                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
1207                                 cp->attr, cp->value);
1208                 } else {
1209                         scs=cf_itemtosection(ci);
1210                         DEBUG("%.*s%s %s%s{",
1211                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
1212                                 scs->name1,
1213                                 scs->name2 ? scs->name2 : "",
1214                                 scs->name2 ?  " " : "");
1215                         dump_config_section(scs, indent+1);
1216                         DEBUG("%.*s}",
1217                                 indent, "\t\t\t\t\t\t\t\t\t\t\t");
1218                 }
1219         }
1220
1221         return 0;
1222 }
1223
1224 int dump_config(void)
1225 {
1226         return dump_config_section(config, 0);
1227 }