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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  *
  24  * Copyright 2000,2006  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 <freeradius-devel/ident.h>
  30 RCSID("$Id$")
  31
  32 #include <freeradius-devel/radiusd.h>
  33 #include <freeradius-devel/rad_assert.h>
  34
  35 #ifdef HAVE_DIRENT_H
  36 #include <dirent.h>
  37 #endif
  38
  39 #ifdef HAVE_SYS_STAT_H
  40 #include <sys/stat.h>
  41 #endif
  42
  43 #include <ctype.h>
  44
  45 typedef enum conf_type {
  46         CONF_ITEM_INVALID = 0,
  47         CONF_ITEM_PAIR,
  48         CONF_ITEM_SECTION,
  49         CONF_ITEM_DATA
  50 } CONF_ITEM_TYPE;
  51
  52 struct conf_item {
  53         struct conf_item *next;
  54         struct conf_part *parent;
  55         int lineno;
  56         const char *filename;
  57         CONF_ITEM_TYPE type;
  58 };
  59 struct conf_pair {
  60         CONF_ITEM item;
  61         const char *attr;
  62         const char *value;
  63         FR_TOKEN operator;
  64         FR_TOKEN value_type;
  65 };
  66 struct conf_part {
  67         CONF_ITEM item;
  68         const char *name1;
  69         const char *name2;
  70         struct conf_item *children;
  71         struct conf_item *tail; /* for speed */
  72         CONF_SECTION    *template;
  73         rbtree_t        *pair_tree; /* and a partridge.. */
  74         rbtree_t        *section_tree; /* no jokes here */
  75         rbtree_t        *name2_tree; /* for sections of the same name2 */
  76         rbtree_t        *data_tree;
  77         void            *base;
  78         int depth;
  79         const CONF_PARSER *variables;
  80 };
  81
  82
  83 /*
  84  *      Internal data that is associated with a configuration section,
  85  *      so that we don't have to track it separately.
  86  */
  87 struct conf_data {
  88         CONF_ITEM  item;
  89         const char *name;
  90         int        flag;
  91         void       *data;       /* user data */
  92         void       (*free)(void *); /* free user data function */
  93 };
  94
  95
  96 static int cf_data_add_internal(CONF_SECTION *cs, const char *name,
  97                                 void *data, void (*data_free)(void *),
  98                                 int flag);
  99 static void *cf_data_find_internal(CONF_SECTION *cs, const char *name,
 100                                    int flag);
 101
 102 int cf_log_config = 1;
 103 int cf_log_modules = 1;
 104
 105 /*
 106  *      Isolate the scary casts in these tiny provably-safe functions
 107  */
 108 CONF_PAIR *cf_itemtopair(CONF_ITEM *ci)
 109 {
 110         if (ci == NULL)
 111                 return NULL;
 112         rad_assert(ci->type == CONF_ITEM_PAIR);
 113         return (CONF_PAIR *)ci;
 114 }
 115 CONF_SECTION *cf_itemtosection(CONF_ITEM *ci)
 116 {
 117         if (ci == NULL)
 118                 return NULL;
 119         rad_assert(ci->type == CONF_ITEM_SECTION);
 120         return (CONF_SECTION *)ci;
 121 }
 122 CONF_ITEM *cf_pairtoitem(CONF_PAIR *cp)
 123 {
 124         if (cp == NULL)
 125                 return NULL;
 126         return (CONF_ITEM *)cp;
 127 }
 128 CONF_ITEM *cf_sectiontoitem(CONF_SECTION *cs)
 129 {
 130         if (cs == NULL)
 131                 return NULL;
 132         return (CONF_ITEM *)cs;
 133 }
 134
 135 static CONF_DATA *cf_itemtodata(CONF_ITEM *ci)
 136 {
 137         if (ci == NULL)
 138                 return NULL;
 139         rad_assert(ci->type == CONF_ITEM_DATA);
 140         return (CONF_DATA *)ci;
 141 }
 142 static CONF_ITEM *cf_datatoitem(CONF_DATA *cd)
 143 {
 144         if (cd == NULL)
 145                 return NULL;
 146         return (CONF_ITEM *)cd;
 147 }
 148
 149 /*
 150  *      Create a new CONF_PAIR
 151  */
 152 static CONF_PAIR *cf_pair_alloc(const char *attr, const char *value,
 153                                 FR_TOKEN operator, FR_TOKEN value_type,
 154                                 CONF_SECTION *parent)
 155 {
 156         char *p;
 157         size_t attr_len, value_len = 0;
 158         CONF_PAIR *cp;
 159
 160         if (!attr) return NULL;
 161         attr_len = strlen(attr) + 1;
 162         if (value) value_len = strlen(value) + 1;
 163
 164         p = rad_malloc(sizeof(*cp) + attr_len + value_len);
 165
 166         cp = (CONF_PAIR *) p;
 167         memset(cp, 0, sizeof(*cp));
 168         cp->item.type = CONF_ITEM_PAIR;
 169         cp->item.parent = parent;
 170
 171         p += sizeof(*cp);
 172         memcpy(p, attr, attr_len);
 173         cp->attr = p;
 174
 175         if (value) {
 176                 p += attr_len;
 177                 memcpy(p, value, value_len);
 178                 cp->value = p;
 179         }
 180         cp->value_type = value_type;
 181         cp->operator = operator;
 182
 183         return cp;
 184 }
 185
 186 /*
 187  *      Free a CONF_PAIR
 188  */
 189 void cf_pair_free(CONF_PAIR **cp)
 190 {
 191         if (!cp || !*cp) return;
 192
 193         /*
 194          *      attr && value are allocated contiguous with cp.
 195          */
 196
 197 #ifndef NDEBUG
 198         memset(*cp, 0, sizeof(*cp));
 199 #endif
 200         free(*cp);
 201
 202         *cp = NULL;
 203 }
 204
 205
 206 static void cf_data_free(CONF_DATA **cd)
 207 {
 208         if (!cd || !*cd) return;
 209
 210         /* name is allocated contiguous with cd */
 211         if (!(*cd)->free) {
 212                 free((*cd)->data);
 213         } else {
 214                 ((*cd)->free)((*cd)->data);
 215         }
 216 #ifndef NDEBUG
 217         memset(*cd, 0, sizeof(*cd));
 218 #endif
 219         free(*cd);
 220         *cd = NULL;
 221 }
 222
 223 /*
 224  *      rbtree callback function
 225  */
 226 static int pair_cmp(const void *a, const void *b)
 227 {
 228         const CONF_PAIR *one = a;
 229         const CONF_PAIR *two = b;
 230
 231         return strcmp(one->attr, two->attr);
 232 }
 233
 234
 235 /*
 236  *      rbtree callback function
 237  */
 238 static int section_cmp(const void *a, const void *b)
 239 {
 240         const CONF_SECTION *one = a;
 241         const CONF_SECTION *two = b;
 242
 243         return strcmp(one->name1, two->name1);
 244 }
 245
 246
 247 /*
 248  *      rbtree callback function
 249  */
 250 static int name2_cmp(const void *a, const void *b)
 251 {
 252         const CONF_SECTION *one = a;
 253         const CONF_SECTION *two = b;
 254
 255         rad_assert(strcmp(one->name1, two->name1) == 0);
 256
 257         if (!one->name2 && !two->name2) return 0;
 258         if (!one->name2) return -1;
 259         if (!two->name2) return +1;
 260
 261         return strcmp(one->name2, two->name2);
 262 }
 263
 264
 265 /*
 266  *      rbtree callback function
 267  */
 268 static int data_cmp(const void *a, const void *b)
 269 {
 270         int rcode;
 271
 272         const CONF_DATA *one = a;
 273         const CONF_DATA *two = b;
 274
 275         rcode = one->flag - two->flag;
 276         if (rcode != 0) return rcode;
 277
 278         return strcmp(one->name, two->name);
 279 }
 280
 281
 282 /*
 283  *      Free strings we've parsed into data structures.
 284  */
 285 void cf_section_parse_free(CONF_SECTION *cs, void *base)
 286 {
 287         int i;
 288         const CONF_PARSER *variables = cs->variables;
 289
 290         /*
 291          *      Don't automatically free the strings if we're being
 292          *      called from a module.  This is also for clients.c,
 293          *      where client_free() expects to be able to free the
 294          *      client structure.  If we moved everything to key off
 295          *      of the config files, we might solve some problems...
 296          */
 297         if (!variables) return;
 298
 299         /*
 300          *      Free up dynamically allocated string pointers.
 301          */
 302         for (i = 0; variables[i].name != NULL; i++) {
 303                 char **p;
 304
 305                 if ((variables[i].type != PW_TYPE_STRING_PTR) &&
 306                     (variables[i].type != PW_TYPE_FILENAME)) {
 307                         continue;
 308                 }
 309
 310                 /*
 311                  *      No base struct offset, data must be the pointer.
 312                  *      If data doesn't exist, ignore the entry, there
 313                  *      must be something wrong.
 314                  */
 315                 if (!base) {
 316                         if (!variables[i].data) {
 317                                 continue;
 318                         }
 319
 320                         p = (char **) variables[i].data;;
 321
 322                 } else if (variables[i].data) {
 323                         p = (char **) variables[i].data;;
 324
 325                 } else {
 326                         p = (char **) (((char *)base) + variables[i].offset);
 327                 }
 328
 329                 free(*p);
 330                 *p = NULL;
 331         }
 332 }
 333
 334
 335 /*
 336  *      Free a CONF_SECTION
 337  */
 338 void cf_section_free(CONF_SECTION **cs)
 339 {
 340         CONF_ITEM       *ci, *next;
 341
 342         if (!cs || !*cs) return;
 343
 344         cf_section_parse_free(*cs, (*cs)->base);
 345
 346         for (ci = (*cs)->children; ci; ci = next) {
 347                 next = ci->next;
 348
 349                 switch (ci->type) {
 350                 case CONF_ITEM_PAIR: {
 351                                 CONF_PAIR *pair = cf_itemtopair(ci);
 352                                 cf_pair_free(&pair);
 353                         }
 354                         break;
 355
 356                 case CONF_ITEM_SECTION: {
 357                                 CONF_SECTION *section = cf_itemtosection(ci);
 358                                 cf_section_free(&section);
 359                         }
 360                         break;
 361
 362                 case CONF_ITEM_DATA: {
 363                                 CONF_DATA *data = cf_itemtodata(ci);
 364                                 cf_data_free(&data);
 365                         }
 366                         break;
 367
 368                 default:        /* should really be an error. */
 369                         break;
 370                 }
 371         }
 372
 373         /*
 374          *      Name1 and name2 are allocated contiguous with
 375          *      cs.
 376          */
 377         if ((*cs)->pair_tree)
 378                 rbtree_free((*cs)->pair_tree);
 379         if ((*cs)->section_tree)
 380                 rbtree_free((*cs)->section_tree);
 381         if ((*cs)->name2_tree)
 382                 rbtree_free((*cs)->name2_tree);
 383         if ((*cs)->data_tree)
 384                 rbtree_free((*cs)->data_tree);
 385
 386         /*
 387          * And free the section
 388          */
 389 #ifndef NDEBUG
 390         memset(*cs, 0, sizeof(*cs));
 391 #endif
 392         free(*cs);
 393
 394         *cs = NULL;
 395 }
 396
 397
 398 /*
 399  *      Allocate a CONF_SECTION
 400  */
 401 static CONF_SECTION *cf_section_alloc(const char *name1, const char *name2,
 402                                       CONF_SECTION *parent)
 403 {
 404         size_t name1_len, name2_len = 0;
 405         char *p;
 406         CONF_SECTION    *cs;
 407
 408         if (!name1) return NULL;
 409
 410         name1_len = strlen(name1) + 1;
 411         if (name2) name2_len = strlen(name2) + 1;
 412
 413         p = rad_malloc(sizeof(*cs) + name1_len + name2_len);
 414
 415         cs = (CONF_SECTION *) p;
 416         memset(cs, 0, sizeof(*cs));
 417         cs->item.type = CONF_ITEM_SECTION;
 418         cs->item.parent = parent;
 419
 420         p += sizeof(*cs);
 421         memcpy(p, name1, name1_len);
 422         cs->name1 = p;
 423
 424         if (name2 && *name2) {
 425                 p += name1_len;
 426                 memcpy(p, name2, name2_len);
 427                 cs->name2 = p;
 428         }
 429
 430         cs->pair_tree = rbtree_create(pair_cmp, NULL, 0);
 431         if (!cs->pair_tree) {
 432                 cf_section_free(&cs);
 433                 return NULL;
 434         }
 435
 436         /*
 437          *      Don't create a data tree, it may not be needed.
 438          */
 439
 440         /*
 441          *      Don't create the section tree here, it may not
 442          *      be needed.
 443          */
 444
 445         if (parent) cs->depth = parent->depth + 1;
 446
 447         return cs;
 448 }
 449
 450 /*
 451  *      Replace pair in a given section with a new pair,
 452  *      of the given value.
 453  */
 454 int cf_pair_replace(CONF_SECTION *cs, CONF_PAIR *cp, const char *value)
 455 {
 456         CONF_PAIR *newp;
 457         CONF_ITEM *ci, *cn, **last;
 458
 459         newp = cf_pair_alloc(cp->attr, value, cp->operator, cp->value_type,
 460                              cs);
 461         if (!newp) return -1;
 462
 463         ci = cf_pairtoitem(cp);
 464         cn = cf_pairtoitem(newp);
 465
 466         /*
 467          *      Find the old one from the linked list, and replace it
 468          *      with the new one.
 469          */
 470         for (last = &cs->children; (*last) != NULL; last = &(*last)->next) {
 471                 if (*last == ci) {
 472                         cn->next = (*last)->next;
 473                         *last = cn;
 474                         ci->next = NULL;
 475                         break;
 476                 }
 477         }
 478
 479         rbtree_deletebydata(cs->pair_tree, ci);
 480
 481         rbtree_insert(cs->pair_tree, cn);
 482
 483         return 0;
 484 }
 485
 486
 487 /*
 488  *      Add an item to a configuration section.
 489  */
 490 static void cf_item_add(CONF_SECTION *cs, CONF_ITEM *ci)
 491 {
 492         if (!cs->children) {
 493                 rad_assert(cs->tail == NULL);
 494                 cs->children = ci;
 495         } else {
 496                 rad_assert(cs->tail != NULL);
 497                 cs->tail->next = ci;
 498         }
 499
 500         /*
 501          *      Update the trees (and tail) for each item added.
 502          */
 503         for (/* nothing */; ci != NULL; ci = ci->next) {
 504                 cs->tail = ci;
 505
 506                 /*
 507                  *      For fast lookups, pair's and sections get
 508                  *      added to rbtree's.
 509                  */
 510                 switch (ci->type) {
 511                         case CONF_ITEM_PAIR:
 512                                 rbtree_insert(cs->pair_tree, ci);
 513                                 break;
 514
 515                         case CONF_ITEM_SECTION: {
 516                                 CONF_SECTION *cs_new = cf_itemtosection(ci);
 517
 518                                 if (!cs->section_tree) {
 519                                         cs->section_tree = rbtree_create(section_cmp, NULL, 0);
 520                                         if (!cs->section_tree) {
 521                                                 radlog(L_ERR, "Out of memory");
 522                                                 _exit(1);
 523                                         }
 524                                 }
 525
 526                                 rbtree_insert(cs->section_tree, cs_new);
 527
 528                                 /*
 529                                  *      Two names: find the named instance.
 530                                  */
 531                                 {
 532                                         CONF_SECTION *old_cs;
 533
 534                                         /*
 535                                          *      Find the FIRST
 536                                          *      CONF_SECTION having
 537                                          *      the given name1, and
 538                                          *      create a new tree
 539                                          *      under it.
 540                                          */
 541                                         old_cs = rbtree_finddata(cs->section_tree, cs_new);
 542                                         if (!old_cs) return; /* this is a bad error! */
 543
 544                                         if (!old_cs->name2_tree) {
 545                                                 old_cs->name2_tree = rbtree_create(name2_cmp,
 546                                                                                    NULL, 0);
 547                                         }
 548                                         if (old_cs->name2_tree) {
 549                                                 rbtree_insert(old_cs->name2_tree, cs_new);
 550                                         }
 551                                 } /* had a name2 */
 552                                 break;
 553                         } /* was a section */
 554
 555                         case CONF_ITEM_DATA:
 556                                 if (!cs->data_tree) {
 557                                         cs->data_tree = rbtree_create(data_cmp, NULL, 0);
 558                                 }
 559                                 if (cs->data_tree) {
 560                                         rbtree_insert(cs->data_tree, ci);
 561                                 }
 562                                 break;
 563
 564                         default: /* FIXME: assert & error! */
 565                                 break;
 566
 567                 } /* switch over conf types */
 568         } /* loop over ci */
 569 }
 570
 571
 572 CONF_ITEM *cf_reference_item(const CONF_SECTION *parentcs,
 573                              CONF_SECTION *outercs,
 574                              const char *ptr)
 575 {
 576         CONF_PAIR *cp;
 577         CONF_SECTION *next;
 578         const CONF_SECTION *cs = outercs;
 579         char name[8192];
 580         char *p;
 581
 582         strlcpy(name, ptr, sizeof(name));
 583         p = name;
 584
 585         /*
 586          *      ".foo" means "foo from the current section"
 587          */
 588         if (*p == '.') {
 589                 p++;
 590
 591                 /*
 592                  *      ..foo means "foo from the section
 593                  *      enclosing this section" (etc.)
 594                  */
 595                 while (*p == '.') {
 596                         if (cs->item.parent)
 597                                 cs = cs->item.parent;
 598                         p++;
 599                 }
 600
 601                 /*
 602                  *      "foo.bar.baz" means "from the root"
 603                  */
 604         } else if (strchr(p, '.') != NULL) {
 605                 if (!parentcs) goto no_such_item;
 606
 607                 cs = parentcs;
 608         }
 609
 610         while (*p) {
 611                 char *q, *r;
 612
 613                 r = strchr(p, '[');
 614                 q = strchr(p, '.');
 615                 if (!r && !q) break;
 616
 617                 if (r && q > r) q = NULL;
 618                 if (q && q < r) r = NULL;
 619
 620                 /*
 621                  *      Split off name2.
 622                  */
 623                 if (r) {
 624                         q = strchr(r + 1, ']');
 625                         if (!q) return NULL; /* parse error */
 626
 627                         /*
 628                          *      Points to foo[bar]xx: parse error,
 629                          *      it should be foo[bar] or foo[bar].baz
 630                          */
 631                         if (q[1] && q[1] != '.') goto no_such_item;
 632
 633                         *r = '\0';
 634                         *q = '\0';
 635                         next = cf_section_sub_find_name2(cs, p, r + 1);
 636                         *r = '[';
 637                         *q = ']';
 638
 639                         /*
 640                          *      Points to a named instance of a section.
 641                          */
 642                         if (!q[1]) {
 643                                 if (!next) goto no_such_item;
 644                                 return cf_sectiontoitem(next);
 645                         }
 646
 647                         q++;    /* ensure we skip the ']' and '.' */
 648
 649                 } else {
 650                         *q = '\0';
 651                         next = cf_section_sub_find(cs, p);
 652                         *q = '.';
 653                 }
 654
 655                 if (!next) break; /* it MAY be a pair in this section! */
 656
 657                 cs = next;
 658                 p = q + 1;
 659         }
 660
 661         if (!*p) goto no_such_item;
 662
 663  retry:
 664         /*
 665          *      Find it in the current referenced
 666          *      section.
 667          */
 668         cp = cf_pair_find(cs, p);
 669         if (cp) return cf_pairtoitem(cp);
 670
 671         next = cf_section_sub_find(cs, p);
 672         if (next) return cf_sectiontoitem(next);
 673
 674         /*
 675          *      "foo" is "in the current section, OR in main".
 676          */
 677         if ((p == name) && (parentcs != NULL) && (cs != parentcs)) {
 678                 cs = parentcs;
 679                 goto retry;
 680         }
 681
 682 no_such_item:
 683         DEBUG2("WARNING: No such configuration item %s", ptr);
 684         return NULL;
 685 }
 686
 687
 688 CONF_SECTION *cf_top_section(CONF_SECTION *cs)
 689 {
 690         while (cs->item.parent != NULL) {
 691                 cs = cs->item.parent;
 692         }
 693
 694         return cs;
 695 }
 696
 697
 698 /*
 699  *      Expand the variables in an input string.
 700  */
 701 static const char *cf_expand_variables(const char *cf, int *lineno,
 702                                        CONF_SECTION *outercs,
 703                                        char *output, const char *input)
 704 {
 705         char *p;
 706         const char *end, *ptr;
 707         const CONF_SECTION *parentcs;
 708         char name[8192];
 709
 710         /*
 711          *      Find the master parent conf section.
 712          *      We can't use mainconfig.config, because we're in the
 713          *      process of re-building it, and it isn't set up yet...
 714          */
 715         parentcs = cf_top_section(outercs);
 716
 717         p = output;
 718         ptr = input;
 719         while (*ptr) {
 720                 /*
 721                  *      Ignore anything other than "${"
 722                  */
 723                 if ((*ptr == '$') && (ptr[1] == '{')) {
 724                         CONF_ITEM *ci;
 725                         CONF_PAIR *cp;
 726
 727                         /*
 728                          *      FIXME: Add support for ${foo:-bar},
 729                          *      like in xlat.c
 730                          */
 731
 732                         /*
 733                          *      Look for trailing '}', and log a
 734                          *      warning for anything that doesn't match,
 735                          *      and exit with a fatal error.
 736                          */
 737                         end = strchr(ptr, '}');
 738                         if (end == NULL) {
 739                                 *p = '\0';
 740                                 radlog(L_INFO, "%s[%d]: Variable expansion missing }",
 741                                        cf, *lineno);
 742                                 return NULL;
 743                         }
 744
 745                         ptr += 2;
 746
 747                         /*
 748                          *      Can't really happen because input lines are
 749                          *      capped at 8k, which is sizeof(name)
 750                          */
 751                         if ((size_t) (end - ptr) >= sizeof(name)) {
 752                                 radlog(L_ERR, "%s[%d]: Reference string is too large",
 753                                        cf, *lineno);
 754                                 return NULL;
 755                         }
 756
 757                         memcpy(name, ptr, end - ptr);
 758                         name[end - ptr] = '\0';
 759
 760                         ci = cf_reference_item(parentcs, outercs, name);
 761                         if (!ci || (ci->type != CONF_ITEM_PAIR)) {
 762                                 radlog(L_ERR, "%s[%d]: Reference \"%s\" not found",
 763                                        cf, *lineno, input);
 764                                 return NULL;
 765                         }
 766
 767                         /*
 768                          *  Substitute the value of the variable.
 769                          */
 770                         cp = cf_itemtopair(ci);
 771                         if (!cp->value) {
 772                                 radlog(L_ERR, "%s[%d]: Reference \"%s\" has no value",
 773                                        cf, *lineno, input);
 774                                 return NULL;
 775                         }
 776                         strcpy(p, cp->value);
 777                         p += strlen(p);
 778                         ptr = end + 1;
 779
 780                 } else if (memcmp(ptr, "$ENV{", 5) == 0) {
 781                         char *env;
 782
 783                         ptr += 5;
 784
 785                         /*
 786                          *      Look for trailing '}', and log a
 787                          *      warning for anything that doesn't match,
 788                          *      and exit with a fatal error.
 789                          */
 790                         end = strchr(ptr, '}');
 791                         if (end == NULL) {
 792                                 *p = '\0';
 793                                 radlog(L_INFO, "%s[%d]: Environment variable expansion missing }",
 794                                        cf, *lineno);
 795                                 return NULL;
 796                         }
 797
 798                         /*
 799                          *      Can't really happen because input lines are
 800                          *      capped at 8k, which is sizeof(name)
 801                          */
 802                         if ((size_t) (end - ptr) >= sizeof(name)) {
 803                                 radlog(L_ERR, "%s[%d]: Environment variable name is too large",
 804                                        cf, *lineno);
 805                                 return NULL;
 806                         }
 807
 808                         memcpy(name, ptr, end - ptr);
 809                         name[end - ptr] = '\0';
 810
 811                         /*
 812                          *      Get the environment variable.
 813                          *      If none exists, then make it an empty string.
 814                          */
 815                         env = getenv(name);
 816                         if (env == NULL) {
 817                                 *name = '\0';
 818                                 env = name;
 819                         }
 820
 821                         strcpy(p, env);
 822                         p += strlen(p);
 823                         ptr = end + 1;
 824
 825                 } else {
 826                         /*
 827                          *      Copy it over verbatim.
 828                          */
 829                         *(p++) = *(ptr++);
 830                 }
 831         } /* loop over all of the input string. */
 832
 833         *p = '\0';
 834
 835         return output;
 836 }
 837
 838
 839 /*
 840  *      Parses an item (not a CONF_ITEM) into the specified format,
 841  *      with a default value.
 842  *
 843  *      Returns -1 on error, 0 for correctly parsed, and 1 if the
 844  *      default value was used.  Note that the default value will be
 845  *      used ONLY if the CONF_PAIR is NULL.
 846  */
 847 int cf_item_parse(CONF_SECTION *cs, const char *name,
 848                   int type, void *data, const char *dflt)
 849 {
 850         int rcode = 0;
 851         char **q;
 852         const char *value;
 853         fr_ipaddr_t ipaddr;
 854         const CONF_PAIR *cp = NULL;
 855         char ipbuf[128];
 856
 857         if (cs) cp = cf_pair_find(cs, name);
 858         if (cp) {
 859                 value = cp->value;
 860
 861         } else if (!dflt) {
 862                 return 1;       /* nothing to parse, return default value */
 863
 864         } else {
 865                 rcode = 1;
 866                 value = dflt;
 867         }
 868
 869         if (!value) {
 870                 return 0;
 871         }
 872
 873         switch (type) {
 874         case PW_TYPE_BOOLEAN:
 875                 /*
 876                  *      Allow yes/no and on/off
 877                  */
 878                 if ((strcasecmp(value, "yes") == 0) ||
 879                     (strcasecmp(value, "on") == 0)) {
 880                         *(int *)data = 1;
 881                 } else if ((strcasecmp(value, "no") == 0) ||
 882                            (strcasecmp(value, "off") == 0)) {
 883                         *(int *)data = 0;
 884                 } else {
 885                         *(int *)data = 0;
 886                         radlog(L_ERR, "Bad value \"%s\" for boolean variable %s", value, name);
 887                         return -1;
 888                 }
 889                 cf_log_info(cs, "\t%s = %s", name, value);
 890                 break;
 891
 892         case PW_TYPE_INTEGER:
 893                 *(int *)data = strtol(value, 0, 0);
 894                 cf_log_info(cs, "\t%s = %d", name, *(int *)data);
 895                 break;
 896
 897         case PW_TYPE_STRING_PTR:
 898                 q = (char **) data;
 899                 if (*q != NULL) {
 900                         free(*q);
 901                 }
 902
 903                 /*
 904                  *      Expand variables which haven't already been
 905                  *      expanded automagically when the configuration
 906                  *      file was read.
 907                  */
 908                 if (value == dflt) {
 909                         char buffer[8192];
 910
 911                         int lineno = cs->item.lineno;
 912
 913                         /*
 914                          *      FIXME: sizeof(buffer)?
 915                          */
 916                         value = cf_expand_variables("?",
 917                                                     &lineno,
 918                                                     cs, buffer, value);
 919                         if (!value) return -1;
 920                 }
 921
 922                 cf_log_info(cs, "\t%s = \"%s\"", name, value ? value : "(null)");
 923                 *q = value ? strdup(value) : NULL;
 924                 break;
 925
 926                 /*
 927                  *      This is the same as PW_TYPE_STRING_PTR,
 928                  *      except that we also "stat" the file, and
 929                  *      cache the result.
 930                  */
 931         case PW_TYPE_FILENAME:
 932                 q = (char **) data;
 933                 if (*q != NULL) {
 934                         free(*q);
 935                 }
 936
 937                 /*
 938                  *      Expand variables which haven't already been
 939                  *      expanded automagically when the configuration
 940                  *      file was read.
 941                  */
 942                 if (value == dflt) {
 943                         char buffer[8192];
 944
 945                         int lineno = cs->item.lineno;
 946
 947                         /*
 948                          *      FIXME: sizeof(buffer)?
 949                          */
 950                         value = cf_expand_variables("?",
 951                                                     &lineno,
 952                                                     cs, buffer, value);
 953                         if (!value) return -1;
 954                 }
 955
 956                 cf_log_info(cs, "\t%s = \"%s\"", name, value ? value : "(null)");
 957                 *q = value ? strdup(value) : NULL;
 958
 959                 /*
 960                  *      And now we "stat" the file.
 961                  *
 962                  *      FIXME: This appears to leak memory on exit,
 963                  *      and we don't use this information.  So it's
 964                  *      commented out for now.
 965                  */
 966                 if (0 && *q) {
 967                         struct stat buf;
 968
 969                         if (stat(*q, &buf) == 0) {
 970                                 time_t *mtime;
 971
 972                                 mtime = rad_malloc(sizeof(*mtime));
 973                                 *mtime = buf.st_mtime;
 974                                 /* FIXME: error? */
 975                                 cf_data_add_internal(cs, *q, mtime, free,
 976                                                      PW_TYPE_FILENAME);
 977                         }
 978                 }
 979                 break;
 980
 981         case PW_TYPE_IPADDR:
 982                 /*
 983                  *      Allow '*' as any address
 984                  */
 985                 if (strcmp(value, "*") == 0) {
 986                         *(uint32_t *) data = htonl(INADDR_ANY);
 987                         cf_log_info(cs, "\t%s = *", name);
 988                         break;
 989                 }
 990                 if (ip_hton(value, AF_INET, &ipaddr) < 0) {
 991                         radlog(L_ERR, "Can't find IP address for host %s", value);
 992                         return -1;
 993                 }
 994
 995                 if (strspn(value, "0123456789.") == strlen(value)) {
 996                         cf_log_info(cs, "\t%s = %s", name, value);
 997                 } else {
 998                         cf_log_info(cs, "\t%s = %s IP address [%s]", name, value,
 999                                ip_ntoh(&ipaddr, ipbuf, sizeof(ipbuf)));
1000                 }
1001                 *(uint32_t *) data = ipaddr.ipaddr.ip4addr.s_addr;
1002                 break;
1003
1004         case PW_TYPE_IPV6ADDR:
1005                 if (ip_hton(value, AF_INET6, &ipaddr) < 0) {
1006                         radlog(L_ERR, "Can't find IPv6 address for host %s", value);
1007                         return -1;
1008                 }
1009                 cf_log_info(cs, "\t%s = %s IPv6 address [%s]", name, value,
1010                                ip_ntoh(&ipaddr, ipbuf, sizeof(ipbuf)));
1011                 memcpy(data, &ipaddr.ipaddr.ip6addr,
1012                        sizeof(ipaddr.ipaddr.ip6addr));
1013                 break;
1014
1015         default:
1016                 radlog(L_ERR, "type %d not supported yet", type);
1017                 return -1;
1018                 break;
1019         } /* switch over variable type */
1020
1021         return rcode;
1022 }
1023
1024 static const char *parse_spaces = "                                                                                                                                                                                                                                                                ";
1025
1026 /*
1027  *      Parse a configuration section into user-supplied variables.
1028  */
1029 int cf_section_parse(CONF_SECTION *cs, void *base,
1030                      const CONF_PARSER *variables)
1031 {
1032         int i;
1033         void *data;
1034
1035         cs->variables = variables; /* this doesn't hurt anything */
1036
1037         if (!cs->name2) {
1038                 cf_log_info(cs, "%.*s%s {", cs->depth, parse_spaces,
1039                        cs->name1);
1040         } else {
1041                 cf_log_info(cs, "%.*s%s %s {", cs->depth, parse_spaces,
1042                        cs->name1, cs->name2);
1043         }
1044
1045         /*
1046          *      Handle the known configuration parameters.
1047          */
1048         for (i = 0; variables[i].name != NULL; i++) {
1049                 /*
1050                  *      Handle subsections specially
1051                  */
1052                 if (variables[i].type == PW_TYPE_SUBSECTION) {
1053                         CONF_SECTION *subcs;
1054                         subcs = cf_section_sub_find(cs, variables[i].name);
1055
1056                         /*
1057                          *      If the configuration section is NOT there,
1058                          *      then ignore it.
1059                          *
1060                          *      FIXME! This is probably wrong... we should
1061                          *      probably set the items to their default values.
1062                          */
1063                         if (!subcs) continue;
1064
1065                         if (!variables[i].dflt) {
1066                                 DEBUG2("Internal sanity check 1 failed in cf_section_parse");
1067                                 goto error;
1068                         }
1069
1070                         if (cf_section_parse(subcs, base,
1071                                              (const CONF_PARSER *) variables[i].dflt) < 0) {
1072                                 goto error;
1073                         }
1074                         continue;
1075                 } /* else it's a CONF_PAIR */
1076
1077                 if (variables[i].data) {
1078                         data = variables[i].data; /* prefer this. */
1079                 } else if (base) {
1080                         data = ((char *)base) + variables[i].offset;
1081                 } else {
1082                         DEBUG2("Internal sanity check 2 failed in cf_section_parse");
1083                         goto error;
1084                 }
1085
1086                 /*
1087                  *      Parse the pair we found, or a default value.
1088                  */
1089                 if (cf_item_parse(cs, variables[i].name, variables[i].type,
1090                                   data, variables[i].dflt) < 0) {
1091                         goto error;
1092                 }
1093         } /* for all variables in the configuration section */
1094
1095         cf_log_info(cs, "%.*s}", cs->depth, parse_spaces);
1096
1097         cs->base = base;
1098
1099         return 0;
1100
1101  error:
1102         cf_log_info(cs, "%.*s}", cs->depth, parse_spaces);
1103         cf_section_parse_free(cs, base);
1104         return -1;
1105 }
1106
1107
1108 /*
1109  *      Sanity check the "if" or "elsif", presuming that the first '('
1110  *      has already been eaten.
1111  *
1112  *      We're not really parsing it here, just checking if it's mostly
1113  *      well-formed.
1114  */
1115 static int condition_looks_ok(const char **ptr)
1116 {
1117         int num_braces = 1;
1118         int quote = 0;
1119         const char *p = *ptr;
1120
1121         while (*p) {
1122                 if (quote) {
1123                         if (*p == quote) {
1124                                 p++;
1125                                 quote = 0;
1126                                 continue;
1127                         }
1128
1129                         if (*p == '\\') {
1130                                 if (!p[1]) {
1131                                         return 0; /* no trailing slash */
1132                                 }
1133                                 p += 2;
1134                                 continue;
1135                         }
1136                         p++;
1137                         continue;
1138                 }
1139
1140                 switch (*p) {
1141                 case '\\':
1142                         if (!p[1]) {
1143                                 return 0; /* no trailing slash */
1144                         }
1145                         p += 2;
1146                         continue;
1147
1148                 case '(':
1149                         num_braces++;
1150                         p++;
1151                         continue;
1152
1153                 case ')':
1154                         if (num_braces == 1) {
1155                                 const char *q = p + 1;
1156
1157                                 /*
1158                                  *      Validate that there isn't much
1159                                  *      else after the closing brace.
1160                                  */
1161                                 while ((*q == ' ') || (*q == '\t')) q++;
1162
1163                                 /*
1164                                  *      Parse error.
1165                                  */
1166                                 if (*q != '{') {
1167                                         return 0;
1168                                 }
1169
1170                                 *ptr = p + 1; /* include the trailing ')' */
1171                                 return 1;
1172                         }
1173                         num_braces--;
1174                         p++;
1175                         continue;
1176
1177                 case '"':
1178                 case '\'':
1179                 case '/':
1180                 case '`':
1181                         quote = *p;
1182                         /* FALL-THROUGH */
1183
1184                 default:
1185                         p++;
1186                         break;
1187                 }
1188         }
1189
1190         return 0;
1191 }
1192
1193
1194 static const char *cf_local_file(CONF_SECTION *cs, const char *local,
1195                                  char *buffer, size_t bufsize)
1196 {
1197         size_t dirsize;
1198         const char *p;
1199         CONF_SECTION *parentcs = cf_top_section(cs);
1200
1201         p = strrchr(parentcs->item.filename, FR_DIR_SEP);
1202         if (!p) return local;
1203
1204         dirsize = (p - parentcs->item.filename) + 1;
1205
1206         if ((dirsize + strlen(local)) >= bufsize) {
1207                 return NULL;
1208         }
1209
1210         memcpy(buffer, parentcs->item.filename, dirsize);
1211         strlcpy(buffer + dirsize, local, bufsize - dirsize);
1212
1213         return buffer;
1214 }
1215
1216
1217 /*
1218  *      Read a part of the config file.
1219  */
1220 static int cf_section_read(const char *filename, int *lineno, FILE *fp,
1221                            CONF_SECTION *current)
1222
1223 {
1224         CONF_SECTION *this, *css;
1225         CONF_PAIR *cpn;
1226         const char *ptr;
1227         const char *value;
1228         char buf[8192];
1229         char buf1[8192];
1230         char buf2[8192];
1231         char buf3[8192];
1232         int t1, t2, t3;
1233         char *cbuf = buf;
1234         size_t len;
1235
1236         this = current;         /* add items here */
1237
1238         /*
1239          *      Read, checking for line continuations ('\\' at EOL)
1240          */
1241         for (;;) {
1242                 int at_eof;
1243
1244                 /*
1245                  *      Get data, and remember if we are at EOF.
1246                  */
1247                 at_eof = (fgets(cbuf, sizeof(buf) - (cbuf - buf), fp) == NULL);
1248                 (*lineno)++;
1249
1250                 /*
1251                  *      We read the entire 8k worth of data: complain.
1252                  *      Note that we don't care if the last character
1253                  *      is \n: it's still forbidden.  This means that
1254                  *      the maximum allowed length of text is 8k-1, which
1255                  *      should be plenty.
1256                  */
1257                 len = strlen(cbuf);
1258                 if ((cbuf + len + 1) >= (buf + sizeof(buf))) {
1259                         radlog(L_ERR, "%s[%d]: Line too long",
1260                                filename, *lineno);
1261                         return -1;
1262                 }
1263
1264                 /*
1265                  *      Not doing continuations: check for edge
1266                  *      conditions.
1267                  */
1268                 if (cbuf == buf) {
1269                         if (at_eof) break;
1270
1271                         ptr = buf;
1272                         while (*ptr && isspace((int) *ptr)) ptr++;
1273
1274                         if (!*ptr || (*ptr == '#')) continue;
1275
1276                 } else if (at_eof || (len == 0)) {
1277                         radlog(L_ERR, "%s[%d]: Continuation at EOF is illegal",
1278                                filename, *lineno);
1279                         return -1;
1280                 }
1281
1282                 /*
1283                  *      See if there's a continuation.
1284                  */
1285                 while ((len > 0) &&
1286                        ((cbuf[len - 1] == '\n') || (cbuf[len - 1] == '\r'))) {
1287                         len--;
1288                         cbuf[len] = '\0';
1289                 }
1290
1291                 if ((len > 0) && (cbuf[len - 1] == '\\')) {
1292                         cbuf[len - 1] = '\0';
1293                         cbuf += len - 1;
1294                         continue;
1295                 }
1296
1297                 ptr = cbuf = buf;
1298
1299                 /*
1300                  *      The parser is getting to be evil.
1301                  */
1302                 while ((*ptr == ' ') || (*ptr == '\t')) ptr++;
1303
1304                 if (((ptr[0] == '%') && (ptr[1] == '{')) ||
1305                     (ptr[0] == '`')) {
1306                         int hack;
1307
1308                         if (ptr[0] == '%') {
1309                                 hack = rad_copy_variable(buf1, ptr);
1310                         } else {
1311                                 hack = rad_copy_string(buf1, ptr);
1312                         }
1313                         if (hack < 0) {
1314                                 radlog(L_ERR, "%s[%d]: Invalid expansion: %s",
1315                                        filename, *lineno, ptr);
1316                                 return -1;
1317                         }
1318
1319                         t1 = T_BARE_WORD;
1320                         ptr += hack;
1321
1322                         t2 = gettoken(&ptr, buf2, sizeof(buf2));
1323                         switch (t2) {
1324                         case T_EOL:
1325                         case T_HASH:
1326                                 goto do_bare_word;
1327
1328                         default:
1329                                 radlog(L_ERR, "%s[%d]: Invalid expansion: %s",
1330                                        filename, *lineno, ptr);
1331                                 return -1;
1332                         }
1333                 } else {
1334                         t1 = gettoken(&ptr, buf1, sizeof(buf1));
1335                 }
1336
1337                 /*
1338                  *      The caller eats "name1 name2 {", and calls us
1339                  *      for the data inside of the section.  So if we
1340                  *      receive a closing brace, then it must mean the
1341                  *      end of the section.
1342                  */
1343                if (t1 == T_RCBRACE) {
1344                        if (this == current) {
1345                                radlog(L_ERR, "%s[%d]: Too many closing braces",
1346                                       filename, *lineno);
1347                                return -1;
1348
1349                        }
1350                        this = this->item.parent;
1351                        continue;
1352                 }
1353
1354                 /*
1355                  *      Allow for $INCLUDE files
1356                  *
1357                  *      This *SHOULD* work for any level include.
1358                  *      I really really really hate this file.  -cparker
1359                  */
1360                if ((strcasecmp(buf1, "$INCLUDE") == 0) ||
1361                    (strcasecmp(buf1, "$-INCLUDE") == 0)) {
1362                        int relative = 1;
1363
1364                         t2 = getword(&ptr, buf2, sizeof(buf2));
1365
1366                         if (buf2[0] == '$') relative = 0;
1367
1368                         value = cf_expand_variables(filename, lineno, this, buf, buf2);
1369                         if (!value) return -1;
1370
1371                         if (!FR_DIR_IS_RELATIVE(value)) relative = 0;
1372
1373                         if (relative) {
1374                                 value = cf_local_file(current, value, buf3,
1375                                                       sizeof(buf3));
1376                                 if (!value) {
1377                                         radlog(L_ERR, "%s[%d]: Directories too deep.",
1378                                                filename, *lineno);
1379                                         return -1;
1380                                 }
1381                         }
1382
1383
1384 #ifdef HAVE_DIRENT_H
1385                         /*
1386                          *      $INCLUDE foo/
1387                          *
1388                          *      Include ALL non-"dot" files in the directory.
1389                          *      careful!
1390                          */
1391                         if (value[strlen(value) - 1] == '/') {
1392                                 DIR             *dir;
1393                                 struct dirent   *dp;
1394                                 struct stat stat_buf;
1395
1396                                 DEBUG2("including files in directory %s", value );
1397                                 dir = opendir(value);
1398                                 if (!dir) {
1399                                         radlog(L_ERR, "%s[%d]: Error reading directory %s: %s",
1400                                                filename, *lineno, value,
1401                                                strerror(errno));
1402                                         return -1;
1403                                 }
1404
1405                                 /*
1406                                  *      Read the directory, ignoring "." files.
1407                                  */
1408                                 while ((dp = readdir(dir)) != NULL) {
1409                                         const char *p;
1410
1411                                         if (dp->d_name[0] == '.') continue;
1412
1413                                         /*
1414                                          *      Check for valid characters
1415                                          */
1416                                         for (p = dp->d_name; *p != '\0'; p++) {
1417                                                 if (isalpha((int)*p) ||
1418                                                     isdigit((int)*p) ||
1419                                                     (*p == '-') ||
1420                                                     (*p == '_') ||
1421                                                     (*p == '.')) continue;
1422                                                 break;
1423                                         }
1424                                         if (*p != '\0') continue;
1425
1426                                         snprintf(buf2, sizeof(buf2), "%s%s",
1427                                                  value, dp->d_name);
1428                                         if ((stat(buf2, &stat_buf) != 0) ||
1429                                             S_ISDIR(stat_buf.st_mode)) continue;
1430                                         /*
1431                                          *      Read the file into the current
1432                                          *      configuration sectoin.
1433                                          */
1434                                         if (cf_file_include(buf2, this) < 0) {
1435                                                 closedir(dir);
1436                                                 return -1;
1437                                         }
1438                                 }
1439                                 closedir(dir);
1440                         }  else
1441 #endif
1442                         { /* it was a normal file */
1443                                 if (buf1[1] == '-') {
1444                                         struct stat statbuf;
1445
1446                                         if (stat(value, &statbuf) < 0) {
1447                                                 DEBUG("WARNING: Not including file %s: %s", value, strerror(errno));
1448                                                 continue;
1449                                         }
1450                                 }
1451
1452                                 if (cf_file_include(value, this) < 0) {
1453                                         return -1;
1454                                 }
1455                         }
1456                         continue;
1457                 } /* we were in an include */
1458
1459                if (strcasecmp(buf1, "$template") == 0) {
1460                        CONF_ITEM *ci;
1461                        CONF_SECTION *parentcs;
1462                        t2 = getword(&ptr, buf2, sizeof(buf2));
1463
1464                        parentcs = cf_top_section(current);
1465
1466                        ci = cf_reference_item(parentcs, this, buf2);
1467                        if (!ci || (ci->type != CONF_ITEM_SECTION)) {
1468                                 radlog(L_ERR, "%s[%d]: Reference \"%s\" not found",
1469                                        filename, *lineno, buf2);
1470                                 return -1;
1471                        }
1472
1473                        if (this->template) {
1474                                 radlog(L_ERR, "%s[%d]: Section already has a template",
1475                                        filename, *lineno);
1476                                 return -1;
1477                        }
1478
1479                        this->template = cf_itemtosection(ci);
1480                        continue;
1481                }
1482
1483                 /*
1484                  *      Ensure that the user can't add CONF_PAIRs
1485                  *      with 'internal' names;
1486                  */
1487                 if (buf1[0] == '_') {
1488                         radlog(L_ERR, "%s[%d]: Illegal configuration pair name \"%s\"",
1489                                         filename, *lineno, buf1);
1490                         return -1;
1491                 }
1492
1493                 /*
1494                  *      Grab the next token.
1495                  */
1496                 t2 = gettoken(&ptr, buf2, sizeof(buf2));
1497                 switch (t2) {
1498                 case T_EOL:
1499                 case T_HASH:
1500                 do_bare_word:
1501                         t2 = T_OP_EQ;
1502                         value = NULL;
1503                         goto do_set;
1504
1505                 case T_OP_ADD:
1506                 case T_OP_CMP_EQ:
1507                 case T_OP_SUB:
1508                 case T_OP_LE:
1509                 case T_OP_GE:
1510                         if (!this || (strcmp(this->name1, "update") != 0)) {
1511                                 radlog(L_ERR, "%s[%d]: Invalid operator in assignment",
1512                                        filename, *lineno);
1513                                 return -1;
1514                         }
1515
1516                 case T_OP_EQ:
1517                 case T_OP_SET:
1518                 do_set:
1519                         t3 = getstring(&ptr, buf3, sizeof(buf3));
1520
1521                         /*
1522                          *      Handle variable substitution via ${foo}
1523                          */
1524                         if ((t3 == T_BARE_WORD) ||
1525                             (t3 == T_DOUBLE_QUOTED_STRING)) {
1526                                 value = cf_expand_variables(filename, lineno, this,
1527                                                             buf, buf3);
1528                                 if (!value) return -1;
1529                         } else if ((t3 == T_EOL) ||
1530                                    (t3 == T_HASH)) {
1531                                 value = NULL;
1532                         } else {
1533                                 value = buf3;
1534                         }
1535
1536                         /*
1537                          *      Add this CONF_PAIR to our CONF_SECTION
1538                          */
1539                         cpn = cf_pair_alloc(buf1, value, t2, t3, this);
1540                         cpn->item.filename = filename;
1541                         cpn->item.lineno = *lineno;
1542                         cf_item_add(this, cf_pairtoitem(cpn));
1543                         continue;
1544
1545                         /*
1546                          *      This horrible code is here to support
1547                          *      if/then/else failover in the
1548                          *      authorize, etc. sections.  It makes no
1549                          *      sense anywhere else.
1550                          */
1551                 case T_LBRACE:
1552                         if ((strcmp(buf1, "if") == 0) ||
1553                             (strcmp(buf1, "elsif") == 0)) {
1554                                 const char *end = ptr;
1555                                 CONF_SECTION *server;
1556
1557                                 if (!condition_looks_ok(&end)) {
1558                                         radlog(L_ERR, "%s[%d]: Parse error in condition at: %s",
1559                                                filename, *lineno, ptr);
1560                                         return -1;
1561                                 }
1562
1563                                 if ((size_t) (end - ptr) >= (sizeof(buf2) - 1)) {
1564                                         radlog(L_ERR, "%s[%d]: Statement too complicated after \"%s\"",
1565                                                filename, *lineno, buf1);
1566                                         return -1;
1567                                 }
1568
1569                                 /*
1570                                  *      More sanity checking.  This is
1571                                  *      getting to be a horrible hack.
1572                                  */
1573                                 server = this;
1574                                 while (server) {
1575                                         if (strcmp(server->name1, "server") == 0) break;
1576                                         server = server->item.parent;
1577                                 }
1578
1579                                 if (0 && !server) {
1580                                         radlog(L_ERR, "%s[%d]: Processing directives such as \"%s\" cannot be used here.",
1581                                                filename, *lineno, buf1);
1582                                         return -1;
1583                                 }
1584
1585                                 buf2[0] = '(';
1586                                 memcpy(buf2 + 1, ptr, end - ptr);
1587                                 buf2[end - ptr + 1] = '\0';
1588                                 ptr = end + 1;
1589                                 t2 = T_BARE_WORD;
1590                                 goto section_alloc;
1591
1592                         } else {
1593                                 radlog(L_ERR, "%s[%d]: Parse error after \"%s\"",
1594                                        filename, *lineno, buf1);
1595                                 return -1;
1596                         }
1597
1598                         /* FALL-THROUGH */
1599
1600                         /*
1601                          *      No '=', must be a section or sub-section.
1602                          */
1603                 case T_BARE_WORD:
1604                 case T_DOUBLE_QUOTED_STRING:
1605                 case T_SINGLE_QUOTED_STRING:
1606                         t3 = gettoken(&ptr, buf3, sizeof(buf3));
1607                         if (t3 != T_LCBRACE) {
1608                                 radlog(L_ERR, "%s[%d]: Expecting section start brace '{' after \"%s %s\"",
1609                                        filename, *lineno, buf1, buf2);
1610                                 return -1;
1611                         }
1612
1613                 case T_LCBRACE:
1614                 section_alloc:
1615                         css = cf_section_alloc(buf1,
1616                                                t2 == T_LCBRACE ? NULL : buf2,
1617                                                this);
1618                         if (!css) {
1619                                 radlog(L_ERR, "%s[%d]: Failed allocating memory for section",
1620                                                 filename, *lineno);
1621                                 return -1;
1622                         }
1623                         cf_item_add(this, cf_sectiontoitem(css));
1624                         css->item.filename = filename;
1625                         css->item.lineno = *lineno;
1626
1627                         /*
1628                          *      The current section is now the child section.
1629                          */
1630                         this = css;
1631                         continue;
1632
1633                 default:
1634                         radlog(L_ERR, "%s[%d]: Parse error after \"%s\"",
1635                                filename, *lineno, buf1);
1636                         return -1;
1637                 }
1638         }
1639
1640         /*
1641          *      See if EOF was unexpected ..
1642          */
1643         if (feof(fp) && (this != current)) {
1644                 radlog(L_ERR, "%s[%d]: EOF reached without closing brace for section %s starting at line %d",
1645                        filename, *lineno,
1646                        cf_section_name1(this), cf_section_lineno(this));
1647                 return -1;
1648         }
1649
1650         return 0;
1651 }
1652
1653 /*
1654  *      Include one config file in another.
1655  */
1656 int cf_file_include(const char *filename, CONF_SECTION *cs)
1657 {
1658         FILE            *fp;
1659         int             lineno = 0;
1660         struct stat     statbuf;
1661         time_t          *mtime;
1662         CONF_DATA       *cd;
1663
1664         DEBUG2( "including configuration file %s", filename);
1665
1666         if (stat(filename, &statbuf) == 0) {
1667 #ifdef S_IWOTH
1668                 if ((statbuf.st_mode & S_IWOTH) != 0) {
1669                         radlog(L_ERR|L_CONS, "Configuration file %s is globally writable.  Refusing to start due to insecure configuration.",
1670                                filename);
1671                         return -1;
1672                 }
1673 #endif
1674
1675 #ifdef S_IROTH
1676                 if (0 && (statbuf.st_mode & S_IROTH) != 0) {
1677                         radlog(L_ERR|L_CONS, "Configuration file %s is globally readable.  Refusing to start due to insecure configuration.",
1678                                filename);
1679                         return -1;
1680                 }
1681 #endif
1682         }
1683
1684         fp = fopen(filename, "r");
1685         if (!fp) {
1686                 radlog(L_ERR|L_CONS, "Unable to open file \"%s\": %s",
1687                        filename, strerror(errno));
1688                 return -1;
1689         }
1690
1691         if (cf_data_find_internal(cs, filename, PW_TYPE_FILENAME)) {
1692                 radlog(L_ERR, "Cannot include the same file twice: \"%s\"",
1693                        filename);
1694                 return -1;
1695         }
1696
1697         /*
1698          *      Add the filename to the section
1699          */
1700         mtime = rad_malloc(sizeof(*mtime));
1701         *mtime = statbuf.st_mtime;
1702
1703         if (cf_data_add_internal(cs, filename, mtime, free,
1704                                  PW_TYPE_FILENAME) < 0) {
1705                 fclose(fp);
1706                 radlog(L_ERR|L_CONS, "Internal error opening file \"%s\"",
1707                        filename);
1708                 return -1;
1709         }
1710
1711         cd = cf_data_find_internal(cs, filename, PW_TYPE_FILENAME);
1712         if (!cd) {
1713                 fclose(fp);
1714                 radlog(L_ERR|L_CONS, "Internal error opening file \"%s\"",
1715                        filename);
1716                 return -1;
1717         }
1718
1719         if (!cs->item.filename) cs->item.filename = filename;
1720
1721         /*
1722          *      Read the section.  It's OK to have EOF without a
1723          *      matching close brace.
1724          */
1725         if (cf_section_read(cd->name, &lineno, fp, cs) < 0) {
1726                 fclose(fp);
1727                 return -1;
1728         }
1729
1730         fclose(fp);
1731         return 0;
1732 }
1733
1734 /*
1735  *      Bootstrap a config file.
1736  */
1737 CONF_SECTION *cf_file_read(const char *filename)
1738 {
1739         char *p;
1740         CONF_PAIR *cp;
1741         CONF_SECTION *cs;
1742
1743         cs = cf_section_alloc("main", NULL, NULL);
1744         if (!cs) return NULL;
1745
1746         cp = cf_pair_alloc("confdir", filename, T_OP_SET, T_BARE_WORD, cs);
1747         if (!cp) return NULL;
1748
1749         p = strrchr(cp->value, FR_DIR_SEP);
1750         if (p) *p = '\0';
1751
1752         cp->item.filename = "internal";
1753         cp->item.lineno = 0;
1754         cf_item_add(cs, cf_pairtoitem(cp));
1755
1756         if (cf_file_include(filename, cs) < 0) {
1757                 cf_section_free(&cs);
1758                 return NULL;
1759         }
1760
1761         return cs;
1762 }
1763
1764 /*
1765  * Return a CONF_PAIR within a CONF_SECTION.
1766  */
1767 CONF_PAIR *cf_pair_find(const CONF_SECTION *cs, const char *name)
1768 {
1769         CONF_ITEM       *ci;
1770         CONF_PAIR       *cp = NULL;
1771
1772         if (!cs) return NULL;
1773
1774         /*
1775          *      Find the name in the tree, for speed.
1776          */
1777         if (name) {
1778                 CONF_PAIR mycp;
1779
1780                 mycp.attr = name;
1781                 cp = rbtree_finddata(cs->pair_tree, &mycp);
1782         } else {
1783                 /*
1784                  *      Else find the first one that matches
1785                  */
1786                 for (ci = cs->children; ci; ci = ci->next) {
1787                         if (ci->type == CONF_ITEM_PAIR) {
1788                                 return cf_itemtopair(ci);
1789                         }
1790                 }
1791         }
1792
1793         if (cp || !cs->template) return cp;
1794
1795         return cf_pair_find(cs->template, name);
1796 }
1797
1798 /*
1799  * Return the attr of a CONF_PAIR
1800  */
1801
1802 const char *cf_pair_attr(CONF_PAIR *pair)
1803 {
1804         return (pair ? pair->attr : NULL);
1805 }
1806
1807 /*
1808  * Return the value of a CONF_PAIR
1809  */
1810
1811 const char *cf_pair_value(CONF_PAIR *pair)
1812 {
1813         return (pair ? pair->value : NULL);
1814 }
1815
1816 /*
1817  *      Copied here for error reporting.
1818  */
1819 extern void fr_strerror_printf(const char *, ...);
1820
1821 /*
1822  * Turn a CONF_PAIR into a VALUE_PAIR
1823  * For now, ignore the "value_type" field...
1824  */
1825 VALUE_PAIR *cf_pairtovp(CONF_PAIR *pair)
1826 {
1827         VALUE_PAIR *vp;
1828
1829         if (!pair) {
1830                 fr_strerror_printf("Internal error");
1831                 return NULL;
1832         }
1833
1834         if (!pair->value) {
1835                 fr_strerror_printf("No value given for attribute %s", pair->attr);
1836                 return NULL;
1837         }
1838
1839         /*
1840          *      pairmake handles tags.  pairalloc() doesn't.
1841          */
1842         vp = pairmake(pair->attr, NULL, pair->operator);
1843         if (!vp) {
1844                 return NULL;
1845         }
1846
1847         if (pair->value_type == T_BARE_WORD) {
1848                 if ((vp->type == PW_TYPE_STRING) &&
1849                     (pair->value[0] == '0') && (pair->value[1] == 'x')) {
1850                         vp->type = PW_TYPE_OCTETS;
1851                 }
1852                 if (!pairparsevalue(vp, pair->value)) {
1853                         pairfree(&vp);
1854                         return NULL;
1855                 }
1856                 vp->flags.do_xlat = 0;
1857
1858         } else if (pair->value_type == T_SINGLE_QUOTED_STRING) {
1859                 if (!pairparsevalue(vp, pair->value)) {
1860                         pairfree(&vp);
1861                         return NULL;
1862                 }
1863                 vp->flags.do_xlat = 0;
1864         } else {
1865                 vp->flags.do_xlat = 1;
1866         }
1867
1868         return vp;
1869 }
1870
1871 /*
1872  * Return the first label of a CONF_SECTION
1873  */
1874
1875 const char *cf_section_name1(const CONF_SECTION *cs)
1876 {
1877         return (cs ? cs->name1 : NULL);
1878 }
1879
1880 /*
1881  * Return the second label of a CONF_SECTION
1882  */
1883
1884 const char *cf_section_name2(const CONF_SECTION *cs)
1885 {
1886         return (cs ? cs->name2 : NULL);
1887 }
1888
1889 /*
1890  * Find a value in a CONF_SECTION
1891  */
1892 const char *cf_section_value_find(const CONF_SECTION *cs, const char *attr)
1893 {
1894         CONF_PAIR       *cp;
1895
1896         cp = cf_pair_find(cs, attr);
1897
1898         return (cp ? cp->value : NULL);
1899 }
1900
1901 /*
1902  * Return the next pair after a CONF_PAIR
1903  * with a certain name (char *attr) If the requested
1904  * attr is NULL, any attr matches.
1905  */
1906
1907 CONF_PAIR *cf_pair_find_next(const CONF_SECTION *cs,
1908                              CONF_PAIR *pair, const char *attr)
1909 {
1910         CONF_ITEM       *ci;
1911
1912         /*
1913          * If pair is NULL this must be a first time run
1914          * Find the pair with correct name
1915          */
1916
1917         if (pair == NULL){
1918                 return cf_pair_find(cs, attr);
1919         }
1920
1921         ci = cf_pairtoitem(pair)->next;
1922
1923         for (; ci; ci = ci->next) {
1924                 if (ci->type != CONF_ITEM_PAIR)
1925                         continue;
1926                 if (attr == NULL || strcmp(cf_itemtopair(ci)->attr, attr) == 0)
1927                         break;
1928         }
1929
1930         return cf_itemtopair(ci);
1931 }
1932
1933 /*
1934  * Find a CONF_SECTION, or return the root if name is NULL
1935  */
1936
1937 CONF_SECTION *cf_section_find(const char *name)
1938 {
1939         if (name)
1940                 return cf_section_sub_find(mainconfig.config, name);
1941         else
1942                 return mainconfig.config;
1943 }
1944
1945 /*
1946  * Find a sub-section in a section
1947  */
1948
1949 CONF_SECTION *cf_section_sub_find(const CONF_SECTION *cs, const char *name)
1950 {
1951         CONF_ITEM *ci;
1952
1953         if (!name) return NULL; /* can't find an un-named section */
1954
1955         /*
1956          *      Do the fast lookup if possible.
1957          */
1958         if (cs->section_tree) {
1959                 CONF_SECTION mycs;
1960
1961                 mycs.name1 = name;
1962                 mycs.name2 = NULL;
1963                 return rbtree_finddata(cs->section_tree, &mycs);
1964         }
1965
1966         for (ci = cs->children; ci; ci = ci->next) {
1967                 if (ci->type != CONF_ITEM_SECTION)
1968                         continue;
1969                 if (strcmp(cf_itemtosection(ci)->name1, name) == 0)
1970                         break;
1971         }
1972
1973         return cf_itemtosection(ci);
1974
1975 }
1976
1977
1978 /*
1979  *      Find a CONF_SECTION with both names.
1980  */
1981 CONF_SECTION *cf_section_sub_find_name2(const CONF_SECTION *cs,
1982                                         const char *name1, const char *name2)
1983 {
1984         CONF_ITEM    *ci;
1985
1986         if (!cs) cs = mainconfig.config;
1987
1988         if (name1 && (cs->section_tree)) {
1989                 CONF_SECTION mycs, *master_cs;
1990
1991                 mycs.name1 = name1;
1992                 mycs.name2 = name2;
1993
1994                 master_cs = rbtree_finddata(cs->section_tree, &mycs);
1995                 if (master_cs) {
1996                         return rbtree_finddata(master_cs->name2_tree, &mycs);
1997                 }
1998         }
1999
2000         /*
2001          *      Else do it the old-fashioned way.
2002          */
2003         for (ci = cs->children; ci; ci = ci->next) {
2004                 CONF_SECTION *subcs;
2005
2006                 if (ci->type != CONF_ITEM_SECTION)
2007                         continue;
2008
2009                 subcs = cf_itemtosection(ci);
2010                 if (!name1) {
2011                         if (!subcs->name2) {
2012                                 if (strcmp(subcs->name1, name2) == 0) break;
2013                         } else {
2014                                 if (strcmp(subcs->name2, name2) == 0) break;
2015                         }
2016                         continue; /* don't do the string comparisons below */
2017                 }
2018
2019                 if ((strcmp(subcs->name1, name1) == 0) &&
2020                     (subcs->name2 != NULL) &&
2021                     (strcmp(subcs->name2, name2) == 0))
2022                         break;
2023         }
2024
2025         return cf_itemtosection(ci);
2026 }
2027
2028 /*
2029  * Return the next subsection after a CONF_SECTION
2030  * with a certain name1 (char *name1). If the requested
2031  * name1 is NULL, any name1 matches.
2032  */
2033
2034 CONF_SECTION *cf_subsection_find_next(CONF_SECTION *section,
2035                                       CONF_SECTION *subsection,
2036                                       const char *name1)
2037 {
2038         CONF_ITEM       *ci;
2039
2040         /*
2041          * If subsection is NULL this must be a first time run
2042          * Find the subsection with correct name
2043          */
2044
2045         if (subsection == NULL){
2046                 ci = section->children;
2047         } else {
2048                 ci = cf_sectiontoitem(subsection)->next;
2049         }
2050
2051         for (; ci; ci = ci->next) {
2052                 if (ci->type != CONF_ITEM_SECTION)
2053                         continue;
2054                 if ((name1 == NULL) ||
2055                     (strcmp(cf_itemtosection(ci)->name1, name1) == 0))
2056                         break;
2057         }
2058
2059         return cf_itemtosection(ci);
2060 }
2061
2062
2063 /*
2064  * Return the next section after a CONF_SECTION
2065  * with a certain name1 (char *name1). If the requested
2066  * name1 is NULL, any name1 matches.
2067  */
2068
2069 CONF_SECTION *cf_section_find_next(CONF_SECTION *section,
2070                                    CONF_SECTION *subsection,
2071                                    const char *name1)
2072 {
2073         if (!section->item.parent) return NULL;
2074
2075         return cf_subsection_find_next(section->item.parent, subsection, name1);
2076 }
2077
2078 /*
2079  * Return the next item after a CONF_ITEM.
2080  */
2081
2082 CONF_ITEM *cf_item_find_next(CONF_SECTION *section, CONF_ITEM *item)
2083 {
2084         /*
2085          * If item is NULL this must be a first time run
2086          * Return the first item
2087          */
2088
2089         if (item == NULL) {
2090                 return section->children;
2091         } else {
2092                 return item->next;
2093         }
2094 }
2095
2096 int cf_section_lineno(CONF_SECTION *section)
2097 {
2098         return cf_sectiontoitem(section)->lineno;
2099 }
2100
2101 const char *cf_pair_filename(CONF_PAIR *pair)
2102 {
2103         return cf_pairtoitem(pair)->filename;
2104 }
2105
2106 const char *cf_section_filename(CONF_SECTION *section)
2107 {
2108         return cf_sectiontoitem(section)->filename;
2109 }
2110
2111 int cf_pair_lineno(CONF_PAIR *pair)
2112 {
2113         return cf_pairtoitem(pair)->lineno;
2114 }
2115
2116 int cf_item_is_section(CONF_ITEM *item)
2117 {
2118         return item->type == CONF_ITEM_SECTION;
2119 }
2120 int cf_item_is_pair(CONF_ITEM *item)
2121 {
2122         return item->type == CONF_ITEM_PAIR;
2123 }
2124
2125
2126 static CONF_DATA *cf_data_alloc(CONF_SECTION *parent, const char *name,
2127                                 void *data, void (*data_free)(void *))
2128 {
2129         char *p;
2130         size_t name_len;
2131         CONF_DATA *cd;
2132
2133         name_len = strlen(name) + 1;
2134
2135         p = rad_malloc(sizeof(*cd) + name_len);
2136         cd = (CONF_DATA *) p;
2137         memset(cd, 0, sizeof(*cd));
2138
2139         cd->item.type = CONF_ITEM_DATA;
2140         cd->item.parent = parent;
2141         cd->data = data;
2142         cd->free = data_free;
2143
2144         p += sizeof(*cd);
2145         memcpy(p, name, name_len);
2146         cd->name = p;
2147         return cd;
2148 }
2149
2150
2151 static void *cf_data_find_internal(CONF_SECTION *cs, const char *name,
2152                                    int flag)
2153 {
2154         if (!cs || !name) return NULL;
2155
2156         /*
2157          *      Find the name in the tree, for speed.
2158          */
2159         if (cs->data_tree) {
2160                 CONF_DATA mycd;
2161
2162                 mycd.name = name;
2163                 mycd.flag = flag;
2164                 return rbtree_finddata(cs->data_tree, &mycd);
2165         }
2166
2167         return NULL;
2168 }
2169
2170 /*
2171  *      Find data from a particular section.
2172  */
2173 void *cf_data_find(CONF_SECTION *cs, const char *name)
2174 {
2175         CONF_DATA *cd = cf_data_find_internal(cs, name, 0);
2176
2177         if (cd) return cd->data;
2178         return NULL;
2179 }
2180
2181
2182 /*
2183  *      Add named data to a configuration section.
2184  */
2185 static int cf_data_add_internal(CONF_SECTION *cs, const char *name,
2186                                 void *data, void (*data_free)(void *),
2187                                 int flag)
2188 {
2189         CONF_DATA *cd;
2190
2191         if (!cs || !name) return -1;
2192
2193         /*
2194          *      Already exists.  Can't add it.
2195          */
2196         if (cf_data_find_internal(cs, name, flag) != NULL) return -1;
2197
2198         cd = cf_data_alloc(cs, name, data, data_free);
2199         if (!cd) return -1;
2200         cd->flag = flag;
2201
2202         cf_item_add(cs, cf_datatoitem(cd));
2203
2204         return 0;
2205 }
2206
2207 /*
2208  *      Add named data to a configuration section.
2209  */
2210 int cf_data_add(CONF_SECTION *cs, const char *name,
2211                 void *data, void (*data_free)(void *))
2212 {
2213         return cf_data_add_internal(cs, name, data, data_free, 0);
2214 }
2215
2216 #if 0
2217 /*
2218  *      Copy CONF_DATA from src to dst
2219  */
2220 static void cf_section_copy_data(CONF_SECTION *s, CONF_SECTION *d)
2221 {
2222
2223         CONF_ITEM *cd, *next, **last;
2224
2225         /*
2226          *      Don't check if s->data_tree is NULL.  It's child
2227          *      sections may have data, even if this section doesn't.
2228          */
2229
2230         rad_assert(d->data_tree == NULL);
2231         d->data_tree = s->data_tree;
2232         s->data_tree = NULL;
2233
2234         /*
2235          *      Walk through src, moving CONF_ITEM_DATA
2236          *      to dst, by hand.
2237          */
2238         last = &(s->children);
2239         for (cd = s->children; cd != NULL; cd = next) {
2240                 next = cd->next;
2241
2242                 /*
2243                  *      Recursively copy data from child sections.
2244                  */
2245                 if (cd->type == CONF_ITEM_SECTION) {
2246                         CONF_SECTION *s1, *d1;
2247
2248                         s1 = cf_itemtosection(cd);
2249                         d1 = cf_section_sub_find_name2(d, s1->name1, s1->name2);
2250                         if (d1) {
2251                                 cf_section_copy_data(s1, d1);
2252                         }
2253                         last = &(cd->next);
2254                         continue;
2255                 }
2256
2257                 /*
2258                  *      Not conf data, remember last ptr.
2259                  */
2260                 if (cd->type != CONF_ITEM_DATA) {
2261                         last = &(cd->next);
2262                         continue;
2263                 }
2264
2265                 /*
2266                  *      Remove it from the src list
2267                  */
2268                 *last = cd->next;
2269                 cd->next = NULL;
2270
2271                 /*
2272                  *      Add it to the dst list
2273                  */
2274                 if (!d->children) {
2275                         rad_assert(d->tail == NULL);
2276                         d->children = cd;
2277                 } else {
2278                         rad_assert(d->tail != NULL);
2279                         d->tail->next = cd;
2280                 }
2281                 d->tail = cd;
2282         }
2283 }
2284
2285 /*
2286  *      For a CONF_DATA element, stat the filename, if necessary.
2287  */
2288 static int filename_stat(void *context, void *data)
2289 {
2290         struct stat buf;
2291         CONF_DATA *cd = data;
2292
2293         context = context;      /* -Wunused */
2294
2295         if (cd->flag != PW_TYPE_FILENAME) return 0;
2296
2297         if (stat(cd->name, &buf) < 0) return -1;
2298
2299         if (buf.st_mtime != *(time_t *) cd->data) return -1;
2300
2301         return 0;
2302 }
2303
2304
2305 /*
2306  *      Compare two CONF_SECTIONS.  The items MUST be in the same
2307  *      order.
2308  */
2309 static int cf_section_cmp(CONF_SECTION *a, CONF_SECTION *b)
2310 {
2311         CONF_ITEM *ca = a->children;
2312         CONF_ITEM *cb = b->children;
2313
2314         while (1) {
2315                 CONF_PAIR *pa, *pb;
2316
2317                 /*
2318                  *      Done.  Stop.
2319                  */
2320                 if (!ca && !cb) break;
2321
2322                 /*
2323                  *      Skip CONF_DATA.
2324                  */
2325                 if (ca && ca->type == CONF_ITEM_DATA) {
2326                         ca = ca->next;
2327                         continue;
2328                 }
2329                 if (cb && cb->type == CONF_ITEM_DATA) {
2330                         cb = cb->next;
2331                         continue;
2332                 }
2333
2334                 /*
2335                  *      One is smaller than the other.  Exit.
2336                  */
2337                 if (!ca || !cb) return 0;
2338
2339                 if (ca->type != cb->type) return 0;
2340
2341                 /*
2342                  *      Deal with subsections.
2343                  */
2344                 if (ca->type == CONF_ITEM_SECTION) {
2345                         CONF_SECTION *sa = cf_itemtosection(ca);
2346                         CONF_SECTION *sb = cf_itemtosection(cb);
2347
2348                         if (!cf_section_cmp(sa, sb)) return 0;
2349                         goto next;
2350                 }
2351
2352                 rad_assert(ca->type == CONF_ITEM_PAIR);
2353
2354                 pa = cf_itemtopair(ca);
2355                 pb = cf_itemtopair(cb);
2356
2357                 /*
2358                  *      Different attr and/or value, Exit.
2359                  */
2360                 if ((strcmp(pa->attr, pb->attr) != 0) ||
2361                     (strcmp(pa->value, pb->value) != 0)) return 0;
2362
2363
2364                 /*
2365                  *      And go to the next element.
2366                  */
2367         next:
2368                 ca = ca->next;
2369                 cb = cb->next;
2370         }
2371
2372         /*
2373          *      Walk over the CONF_DATA, stat'ing PW_TYPE_FILENAME.
2374          */
2375         if (a->data_tree &&
2376             (rbtree_walk(a->data_tree, InOrder, filename_stat, NULL) != 0)) {
2377                 return 0;
2378         }
2379
2380         /*
2381          *      They must be the same, say so.
2382          */
2383         return 1;
2384 }
2385
2386
2387 /*
2388  *      Migrate CONF_DATA from one section to another.
2389  */
2390 int cf_section_migrate(CONF_SECTION *dst, CONF_SECTION *src)
2391 {
2392         CONF_ITEM *ci;
2393         CONF_SECTION *s, *d;
2394
2395         for (ci = src->children; ci != NULL; ci = ci->next) {
2396                 if (ci->type != CONF_ITEM_SECTION)
2397                         continue;
2398
2399                 s = cf_itemtosection(ci);
2400                 d = cf_section_sub_find_name2(dst, s->name1, s->name2);
2401
2402                 if (!d) continue; /* not in new one, don't migrate it */
2403
2404                 /*
2405                  *      A section of the same name is in BOTH src & dst,
2406                  *      compare the CONF_PAIR's.  If they're all the same,
2407                  *      then copy the CONF_DATA from one to the other.
2408                  */
2409                 if (cf_section_cmp(s, d)) {
2410                         cf_section_copy_data(s, d);
2411                 }
2412         }
2413
2414         return 1;               /* rcode means anything? */
2415 }
2416 #endif
2417
2418 int cf_section_template(CONF_SECTION *cs, CONF_SECTION *template)
2419 {
2420         if (!cs || !template || cs->template || template->template) return -1;
2421
2422         cs->template = template;
2423
2424         return 0;
2425 }
2426
2427
2428 /*
2429  *      This is here to make the rest of the code easier to read.  It
2430  *      ties conffile.c to log.c, but it means we don't have to
2431  *      pollute every other function with the knowledge of the
2432  *      configuration internals.
2433  */
2434 void cf_log_err(CONF_ITEM *ci, const char *fmt, ...)
2435 {
2436         va_list ap;
2437         char buffer[256];
2438
2439         va_start(ap, fmt);
2440         vsnprintf(buffer, sizeof(buffer), fmt, ap);
2441         va_end(ap);
2442
2443         radlog(L_ERR, "%s[%d]: %s", ci->filename, ci->lineno, buffer);
2444 }
2445
2446
2447 void cf_log_info(CONF_SECTION *cs, const char *fmt, ...)
2448 {
2449         va_list ap;
2450
2451         va_start(ap, fmt);
2452         if (debug_flag > 1 && cf_log_config && cs) vradlog(L_DBG, fmt, ap);
2453         va_end(ap);
2454 }
2455
2456 /*
2457  *      Wrapper to simplify the code.
2458  */
2459 void cf_log_module(CONF_SECTION *cs, const char *fmt, ...)
2460 {
2461         va_list ap;
2462         char buffer[256];
2463
2464         va_start(ap, fmt);
2465         if (debug_flag > 1 && cf_log_modules && cs) {
2466                 vsnprintf(buffer, sizeof(buffer), fmt, ap);
2467
2468                 radlog(L_DBG, " Module: %s", buffer);
2469         }
2470         va_end(ap);
2471 }
2472
2473 const CONF_PARSER *cf_section_parse_table(CONF_SECTION *cs)
2474 {
2475         if (!cs) return NULL;
2476
2477         return cs->variables;
2478 }
2479
2480 #if 0
2481 /*
2482  * JMG dump_config tries to dump the config structure in a readable format
2483  *
2484 */
2485
2486 static int dump_config_section(CONF_SECTION *cs, int indent)
2487 {
2488         CONF_SECTION    *scs;
2489         CONF_PAIR       *cp;
2490         CONF_ITEM       *ci;
2491
2492         /* The DEBUG macro doesn't let me
2493          *   for(i=0;i<indent;++i) debugputchar('\t');
2494          * so I had to get creative. --Pac. */
2495
2496         for (ci = cs->children; ci; ci = ci->next) {
2497                 switch (ci->type) {
2498                 case CONF_ITEM_PAIR:
2499                         cp=cf_itemtopair(ci);
2500                         DEBUG("%.*s%s = %s",
2501                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
2502                                 cp->attr, cp->value);
2503                         break;
2504
2505                 case CONF_ITEM_SECTION:
2506                         scs=cf_itemtosection(ci);
2507                         DEBUG("%.*s%s %s%s{",
2508                                 indent, "\t\t\t\t\t\t\t\t\t\t\t",
2509                                 scs->name1,
2510                                 scs->name2 ? scs->name2 : "",
2511                                 scs->name2 ?  " " : "");
2512                         dump_config_section(scs, indent+1);
2513                         DEBUG("%.*s}",
2514                                 indent, "\t\t\t\t\t\t\t\t\t\t\t");
2515                         break;
2516
2517                 default:        /* FIXME: Do more! */
2518                         break;
2519                 }
2520         }
2521
2522         return 0;
2523 }
2524
2525 int dump_config(CONF_SECTION *cs)
2526 {
2527         return dump_config_section(cs, 0);
2528 }
2529 #endif
2530
2531 static const char *cf_pair_print_value(const CONF_PAIR *cp,
2532                                        char *buffer, size_t buflen)
2533 {
2534         char *p;
2535
2536         if (!cp->value) return "";
2537
2538         switch (cp->value_type) {
2539         default:
2540         case T_BARE_WORD:
2541                 snprintf(buffer, buflen, "%s", cp->value);
2542                 break;
2543
2544         case T_SINGLE_QUOTED_STRING:
2545                 snprintf(buffer, buflen, "'%s'", cp->value);
2546                 break;
2547
2548         case T_DOUBLE_QUOTED_STRING:
2549                 buffer[0] = '"';
2550                 fr_print_string(cp->value, strlen(cp->value),
2551                                 buffer + 1, buflen - 3);
2552                 p = buffer + strlen(buffer); /* yuck... */
2553                 p[0] = '"';
2554                 p[1] = '\0';
2555                 break;
2556         }
2557
2558         return buffer;
2559 }
2560
2561
2562 int cf_pair2xml(FILE *fp, CONF_PAIR *cp)
2563 {
2564         fprintf(fp, "<%s>", cp->attr);
2565         if (cp->value) {
2566                 char buffer[2048];
2567
2568                 char *p = buffer;
2569                 const char *q = cp->value;
2570
2571                 while (*q && (p < (buffer + sizeof(buffer)))) {
2572                         if (q[0] == '&') {
2573                                 memcpy(p, "&amp;", 4);
2574                                 p += 5;
2575
2576                         } else if (q[0] == '<') {
2577                                 memcpy(p, "&lt;", 4);
2578                                 p += 4;
2579
2580                         } else if (q[0] == '>') {
2581                                 memcpy(p, "&gt;", 4);
2582                                 p += 4;
2583
2584                         } else {
2585                                 *(p++) = *q;
2586                         }
2587                         q++;
2588                 }
2589
2590                 *p = '\0';
2591                 fprintf(fp, "%s", buffer);
2592         }
2593
2594         fprintf(fp, "</%s>\n", cp->attr);
2595
2596         return 1;
2597 }
2598
2599 int cf_section2xml(FILE *fp, CONF_SECTION *cs)
2600 {
2601         CONF_ITEM *ci, *next;
2602
2603         /*
2604          *      Section header
2605          */
2606         fprintf(fp, "<%s>\n", cs->name1);
2607         if (cs->name2) {
2608                 fprintf(fp, "<_name2>%s</_name2>\n", cs->name2);
2609         }
2610
2611         /*
2612          *      Loop over contents.
2613          */
2614         for (ci = cs->children; ci; ci = next) {
2615                 next = ci->next;
2616
2617                 switch (ci->type) {
2618                 case CONF_ITEM_PAIR:
2619                         if (!cf_pair2xml(fp, (CONF_PAIR *) ci)) return 0;
2620                         break;
2621
2622                 case CONF_ITEM_SECTION:
2623                         if (!cf_section2xml(fp, (CONF_SECTION *) ci)) return 0;
2624                         break;
2625
2626                 default:        /* should really be an error. */
2627                         break;
2628
2629                 }
2630         }
2631
2632         fprintf(fp, "</%s>\n", cs->name1);
2633
2634         return 1;               /* success */
2635 }
2636
2637 int cf_pair2file(FILE *fp, CONF_PAIR *cp)
2638 {
2639         char buffer[2048];
2640
2641         fprintf(fp, "\t%s = %s\n", cp->attr,
2642                 cf_pair_print_value(cp, buffer, sizeof(buffer)));
2643
2644         return 1;
2645 }
2646
2647 int cf_section2file(FILE *fp, CONF_SECTION *cs)
2648 {
2649         CONF_ITEM *ci, *next;
2650
2651         /*
2652          *      Section header
2653          */
2654         if (!cs->name2) {
2655                 fprintf(fp, "%s {\n", cs->name1);
2656         } else {
2657                 fprintf(fp, "%s %s {\n",
2658                         cs->name1, cs->name2);
2659         }
2660
2661         /*
2662          *      Loop over contents.
2663          */
2664         for (ci = cs->children; ci; ci = next) {
2665                 next = ci->next;
2666
2667                 switch (ci->type) {
2668                 case CONF_ITEM_PAIR:
2669                         if (!cf_pair2file(fp, (CONF_PAIR *) ci)) return 0;
2670                         break;
2671
2672                 case CONF_ITEM_SECTION:
2673                         if (!cf_section2file(fp, (CONF_SECTION *) ci)) return 0;
2674                         break;
2675
2676                 default:        /* should really be an error. */
2677                         break;
2678
2679                 }
2680         }
2681
2682         fprintf(fp, "}\n");
2683
2684         return 1;               /* success */
2685 }