pppd/plugins/radius/radiusclient/lib/dict.c

   1 /*
   2  * $Id: dict.c,v 1.2 2002/03/05 15:14:06 dfs Exp $
   3  *
   4  * Copyright (C) 2002 Roaring Penguin Software Inc.
   5  *
   6  * Copyright (C) 1995,1996,1997 Lars Fenneberg
   7  *
   8  * Copyright 1992 Livingston Enterprises, Inc.
   9  *
  10  * Copyright 1992,1993, 1994,1995 The Regents of the University of Michigan
  11  * and Merit Network, Inc. All Rights Reserved
  12  *
  13  * See the file COPYRIGHT for the respective terms and conditions.
  14  * If the file is missing contact me at lf@elemental.net
  15  * and I'll send you a copy.
  16  *
  17  */
  18
  19 #include <config.h>
  20 #include <includes.h>
  21 #include <radiusclient.h>
  22
  23 static DICT_ATTR *dictionary_attributes = NULL;
  24 static DICT_VALUE *dictionary_values = NULL;
  25 static VENDOR_DICT *vendor_dictionaries = NULL;
  26
  27 /*
  28  * Function: rc_read_dictionary
  29  *
  30  * Purpose: Initialize the dictionary.  Read all ATTRIBUTES into
  31  *          the dictionary_attributes list.  Read all VALUES into
  32  *          the dictionary_values list.  Construct VENDOR dictionaries
  33  *          as required.
  34  *
  35  */
  36
  37 int rc_read_dictionary (char *filename)
  38 {
  39         FILE           *dictfd;
  40         char            dummystr[AUTH_ID_LEN];
  41         char            namestr[AUTH_ID_LEN];
  42         char            valstr[AUTH_ID_LEN];
  43         char            attrstr[AUTH_ID_LEN];
  44         char            typestr[AUTH_ID_LEN];
  45         char            vendorstr[AUTH_ID_LEN];
  46         int             line_no;
  47         DICT_ATTR      *attr;
  48         DICT_VALUE     *dval;
  49         VENDOR_DICT    *vdict;
  50         char            buffer[256];
  51         int             value;
  52         int             type;
  53         int             n;
  54         int             retcode;
  55         if ((dictfd = fopen (filename, "r")) == (FILE *) NULL)
  56         {
  57                 rc_log(LOG_ERR, "rc_read_dictionary: couldn't open dictionary %s: %s",
  58                                 filename, strerror(errno));
  59                 return (-1);
  60         }
  61
  62         line_no = 0;
  63         retcode = 0;
  64         while (fgets (buffer, sizeof (buffer), dictfd) != (char *) NULL)
  65         {
  66                 line_no++;
  67
  68                 /* Skip empty space */
  69                 if (*buffer == '#' || *buffer == '\0' || *buffer == '\n')
  70                 {
  71                         continue;
  72                 }
  73
  74                 if (strncmp (buffer, "VENDOR", 6) == 0) {
  75                     /* Read the VENDOR line */
  76                     if (sscanf(buffer, "%s%s%d", dummystr, namestr, &value) != 3) {
  77                         rc_log(LOG_ERR, "rc_read_dictionary: invalid vendor on line %d of dictionary %s",
  78                                line_no, filename);
  79                         retcode = -1;
  80                         break;
  81                     }
  82                     /* Validate entry */
  83                     if (strlen (namestr) > NAME_LENGTH) {
  84                         rc_log(LOG_ERR, "rc_read_dictionary: invalid name length on line %d of dictionary %s",
  85                                line_no, filename);
  86                         retcode = -1;
  87                         break;
  88                     }
  89                     /* Create new vendor entry */
  90                     vdict = (VENDOR_DICT *) malloc (sizeof (VENDOR_DICT));
  91                     if (!vdict) {
  92                         rc_log(LOG_CRIT, "rc_read_dictionary: out of memory");
  93                         retcode = -1;
  94                         break;
  95                     }
  96                     strcpy(vdict->vendorname, namestr);
  97                     vdict->vendorcode = value;
  98                     vdict->attributes = NULL;
  99                     vdict->next = vendor_dictionaries;
 100                     vendor_dictionaries = vdict;
 101                 }
 102                 else if (strncmp (buffer, "ATTRIBUTE", 9) == 0)
 103                 {
 104
 105                         /* Read the ATTRIBUTE line.  It is one of:
 106                          * ATTRIBUTE attr_name attr_val type         OR
 107                          * ATTRIBUTE attr_name attr_val type vendor  */
 108                         vendorstr[0] = 0;
 109                         n = sscanf(buffer, "%s%s%s%s%s", dummystr, namestr, valstr, typestr, vendorstr);
 110                         if (n != 4 && n != 5)
 111                         {
 112                                 rc_log(LOG_ERR, "rc_read_dictionary: invalid attribute on line %d of dictionary %s",
 113                                          line_no, filename);
 114                                 retcode = -1;
 115                                 break;
 116                         }
 117
 118                         /*
 119                          * Validate all entries
 120                          */
 121                         if (strlen (namestr) > NAME_LENGTH)
 122                         {
 123                                 rc_log(LOG_ERR, "rc_read_dictionary: invalid name length on line %d of dictionary %s",
 124                                          line_no, filename);
 125                                 retcode = -1;
 126                                 break;
 127                         }
 128
 129                         if (strlen (vendorstr) > NAME_LENGTH)
 130                         {
 131                                 rc_log(LOG_ERR, "rc_read_dictionary: invalid name length on line %d of dictionary %s",
 132                                          line_no, filename);
 133                                 retcode = -1;
 134                                 break;
 135                         }
 136
 137                         if (!isdigit (*valstr))
 138                         {
 139                                 rc_log(LOG_ERR,
 140                                  "rc_read_dictionary: invalid value on line %d of dictionary %s",
 141                                          line_no, filename);
 142                                 retcode = -1;
 143                                 break;
 144                         }
 145                         value = atoi (valstr);
 146
 147                         if (strcmp (typestr, "string") == 0)
 148                         {
 149                                 type = PW_TYPE_STRING;
 150                         }
 151                         else if (strcmp (typestr, "integer") == 0)
 152                         {
 153                                 type = PW_TYPE_INTEGER;
 154                         }
 155                         else if (strcmp (typestr, "ipaddr") == 0)
 156                         {
 157                                 type = PW_TYPE_IPADDR;
 158                         }
 159                         else if (strcmp (typestr, "date") == 0)
 160                         {
 161                                 type = PW_TYPE_DATE;
 162                         }
 163                         else
 164                         {
 165                                 rc_log(LOG_ERR,
 166                                   "rc_read_dictionary: invalid type on line %d of dictionary %s",
 167                                          line_no, filename);
 168                                 retcode = -1;
 169                                 break;
 170                         }
 171
 172                         /* Search for vendor if supplied */
 173                         if (*vendorstr) {
 174                             vdict = rc_dict_findvendor(vendorstr);
 175                             if (!vdict) {
 176                                 rc_log(LOG_ERR,
 177                                        "rc_read_dictionary: unknown vendor on line %d of dictionary %s",
 178                                        line_no, filename);
 179                                 retcode = -1;
 180                                 break;
 181                             }
 182                         } else {
 183                             vdict = NULL;
 184                         }
 185                         /* Create a new attribute for the list */
 186                         if ((attr =
 187                                 (DICT_ATTR *) malloc (sizeof (DICT_ATTR)))
 188                                                         == (DICT_ATTR *) NULL)
 189                         {
 190                                 rc_log(LOG_CRIT, "rc_read_dictionary: out of memory");
 191                                 retcode = -1;
 192                                 break;
 193                         }
 194                         strcpy (attr->name, namestr);
 195                         if (vdict) {
 196                             attr->vendorcode = vdict->vendorcode;
 197                         } else {
 198                             attr->vendorcode = VENDOR_NONE;
 199                         }
 200                         attr->value = value;
 201                         attr->type = type;
 202
 203                         /* Insert it into the list */
 204                         if (vdict) {
 205                             attr->next = vdict->attributes;
 206                             vdict->attributes = attr;
 207                         } else {
 208                             attr->next = dictionary_attributes;
 209                             dictionary_attributes = attr;
 210                         }
 211                 }
 212                 else if (strncmp (buffer, "VALUE", 5) == 0)
 213                 {
 214                         /* Read the VALUE line */
 215                         if (sscanf (buffer, "%s%s%s%s", dummystr, attrstr,
 216                                     namestr, valstr) != 4)
 217                         {
 218                                 rc_log(LOG_ERR,
 219                            "rc_read_dictionary: invalid value entry on line %d of dictionary %s",
 220                                          line_no, filename);
 221                                 retcode = -1;
 222                                 break;
 223                         }
 224
 225                         /*
 226                          * Validate all entries
 227                          */
 228                         if (strlen (attrstr) > NAME_LENGTH)
 229                         {
 230                                 rc_log(LOG_ERR,
 231                       "rc_read_dictionary: invalid attribute length on line %d of dictionary %s",
 232                                          line_no, filename);
 233                                 retcode = -1;
 234                                 break;
 235                         }
 236
 237                         if (strlen (namestr) > NAME_LENGTH)
 238                         {
 239                                 rc_log(LOG_ERR,
 240                            "rc_read_dictionary: invalid name length on line %d of dictionary %s",
 241                                          line_no, filename);
 242                                 retcode = -1;
 243                                 break;
 244                         }
 245
 246                         if (!isdigit (*valstr))
 247                         {
 248                                 rc_log(LOG_ERR,
 249                                  "rc_read_dictionary: invalid value on line %d of dictionary %s",
 250                                          line_no, filename);
 251                                 retcode = -1;
 252                                 break;
 253                         }
 254                         value = atoi (valstr);
 255
 256                         /* Create a new VALUE entry for the list */
 257                         if ((dval =
 258                                 (DICT_VALUE *) malloc (sizeof (DICT_VALUE)))
 259                                                         == (DICT_VALUE *) NULL)
 260                         {
 261                                 rc_log(LOG_CRIT, "rc_read_dictionary: out of memory");
 262                                 retcode = -1;
 263                                 break;
 264                         }
 265                         strcpy (dval->attrname, attrstr);
 266                         strcpy (dval->name, namestr);
 267                         dval->value = value;
 268
 269                         /* Insert it into the list */
 270                         dval->next = dictionary_values;
 271                         dictionary_values = dval;
 272                 }
 273                 else if (strncmp (buffer, "INCLUDE", 7) == 0)
 274                 {
 275                         /* Read the INCLUDE line */
 276                         if (sscanf (buffer, "%s%s", dummystr, namestr) != 2)
 277                         {
 278                                 rc_log(LOG_ERR,
 279                            "rc_read_dictionary: invalid include entry on line %d of dictionary %s",
 280                                          line_no, filename);
 281                                 retcode = -1;
 282                                 break;
 283                         }
 284                         if (rc_read_dictionary(namestr) == -1)
 285                         {
 286                                 retcode = -1;
 287                                 break;
 288                         }
 289                 }
 290         }
 291         fclose (dictfd);
 292         return retcode;
 293 }
 294
 295 /*
 296  * Function: rc_dict_getattr
 297  *
 298  * Purpose: Return the full attribute structure based on the
 299  *          attribute id number and vendor code.  If vendor code is VENDOR_NONE,
 300  *          non-vendor-specific attributes are used
 301  *
 302  */
 303
 304 DICT_ATTR *rc_dict_getattr (int attribute, int vendor)
 305 {
 306         DICT_ATTR      *attr;
 307         VENDOR_DICT    *dict;
 308
 309         if (vendor == VENDOR_NONE) {
 310             attr = dictionary_attributes;
 311             while (attr != (DICT_ATTR *) NULL) {
 312                 if (attr->value == attribute) {
 313                     return (attr);
 314                 }
 315                 attr = attr->next;
 316             }
 317         } else {
 318             dict = rc_dict_getvendor(vendor);
 319             if (!dict) {
 320                 return NULL;
 321             }
 322             attr = dict->attributes;
 323             while (attr) {
 324                 if (attr->value == attribute) {
 325                     return attr;
 326                 }
 327                 attr = attr->next;
 328             }
 329         }
 330         return NULL;
 331 }
 332
 333 /*
 334  * Function: rc_dict_findattr
 335  *
 336  * Purpose: Return the full attribute structure based on the
 337  *          attribute name.
 338  *
 339  */
 340
 341 DICT_ATTR *rc_dict_findattr (char *attrname)
 342 {
 343         DICT_ATTR      *attr;
 344         VENDOR_DICT    *dict;
 345
 346         attr = dictionary_attributes;
 347         while (attr != (DICT_ATTR *) NULL)
 348         {
 349                 if (strcasecmp (attr->name, attrname) == 0)
 350                 {
 351                         return (attr);
 352                 }
 353                 attr = attr->next;
 354         }
 355
 356         /* Search vendor-specific dictionaries */
 357         dict = vendor_dictionaries;
 358         while (dict) {
 359             attr = dict->attributes;
 360             while (attr) {
 361                 if (strcasecmp (attr->name, attrname) == 0) {
 362                     return (attr);
 363                 }
 364                 attr = attr->next;
 365             }
 366             dict = dict->next;
 367         }
 368         return ((DICT_ATTR *) NULL);
 369 }
 370
 371
 372 /*
 373  * Function: rc_dict_findval
 374  *
 375  * Purpose: Return the full value structure based on the
 376  *         value name.
 377  *
 378  */
 379
 380 DICT_VALUE *rc_dict_findval (char *valname)
 381 {
 382         DICT_VALUE     *val;
 383
 384         val = dictionary_values;
 385         while (val != (DICT_VALUE *) NULL)
 386         {
 387                 if (strcasecmp (val->name, valname) == 0)
 388                 {
 389                         return (val);
 390                 }
 391                 val = val->next;
 392         }
 393         return ((DICT_VALUE *) NULL);
 394 }
 395
 396 /*
 397  * Function: dict_getval
 398  *
 399  * Purpose: Return the full value structure based on the
 400  *          actual value and the associated attribute name.
 401  *
 402  */
 403
 404 DICT_VALUE * rc_dict_getval (UINT4 value, char *attrname)
 405 {
 406         DICT_VALUE     *val;
 407
 408         val = dictionary_values;
 409         while (val != (DICT_VALUE *) NULL)
 410         {
 411                 if (strcmp (val->attrname, attrname) == 0 &&
 412                                 val->value == value)
 413                 {
 414                         return (val);
 415                 }
 416                 val = val->next;
 417         }
 418         return ((DICT_VALUE *) NULL);
 419 }
 420
 421 /*
 422  * Function: rc_dict_findvendor
 423  *
 424  * Purpose: Return the vendor's dictionary given the vendor name.
 425  *
 426  */
 427 VENDOR_DICT * rc_dict_findvendor (char *vendorname)
 428 {
 429     VENDOR_DICT *dict;
 430
 431     dict = vendor_dictionaries;
 432     while (dict) {
 433         if (!strcmp(vendorname, dict->vendorname)) {
 434             return dict;
 435         }
 436         dict = dict->next;
 437     }
 438     return NULL;
 439 }
 440
 441 /*
 442  * Function: rc_dict_getvendor
 443  *
 444  * Purpose: Return the vendor's dictionary given the vendor ID
 445  *
 446  */
 447 VENDOR_DICT * rc_dict_getvendor (int id)
 448 {
 449     VENDOR_DICT *dict;
 450
 451     dict = vendor_dictionaries;
 452     while (dict) {
 453         if (id == dict->vendorcode) {
 454             return dict;
 455         }
 456         dict = dict->next;
 457     }
 458     return NULL;
 459 }