epan/radius_dict.l

   1 %top {
   2 /* Include this before everything else, for various large-file definitions */
   3 #include "config.h"
   4 }
   5
   6 /*
   7  * We want a reentrant scanner.
   8  */
   9 %option reentrant
  10
  11 /*
  12  * We don't use input, so don't generate code for it.
  13  */
  14 %option noinput
  15
  16 /*
  17  * We don't use unput, so don't generate code for it.
  18  */
  19 %option nounput
  20
  21 /*
  22  * We don't read interactively from the terminal.
  23  */
  24 %option never-interactive
  25
  26 /*
  27  * We want to stop processing when we get to the end of the input.
  28  */
  29 %option noyywrap
  30
  31 /*
  32  * The language we're scanning is case-insensitive.
  33  */
  34 %option caseless
  35
  36 /*
  37  * The type for the state we keep for a scanner.
  38  */
  39 %option extra-type="Radius_scanner_state_t*"
  40
  41 /*
  42  * We have to override the memory allocators so that we don't get
  43  * "unused argument" warnings from the yyscanner argument (which
  44  * we don't use, as we have a global memory allocator).
  45  *
  46  * We provide, as macros, our own versions of the routines generated by Flex,
  47  * which just call malloc()/realloc()/free() (as the Flex versions do),
  48  * discarding the extra argument.
  49  */
  50 %option noyyalloc
  51 %option noyyrealloc
  52 %option noyyfree
  53
  54 /*
  55  * Prefix scanner routines with "Radius_" rather than "yy", so this scanner
  56  * can coexist with other scanners.
  57  */
  58 %option prefix="Radius_"
  59
  60 %option outfile="radius_dict.c"
  61
  62 %{
  63         /* radius_dict.l
  64         *
  65         * RADIUS dictionary parser
  66         *
  67         * Wireshark - Network traffic analyzer
  68         * By Gerald Combs <gerald@wireshark.org>
  69         * Copyright 1998 Gerald Combs
  70         *
  71         * This program is free software; you can redistribute it and/or
  72         * modify it under the terms of the GNU General Public License
  73         * as published by the Free Software Foundation; either version 2
  74         * of the License, or (at your option) any later version.
  75         *
  76         * This program is distributed in the hope that it will be useful,
  77         * but WITHOUT ANY WARRANTY; without even the implied warranty of
  78         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  79         * GNU General Public License for more details.
  80         *
  81         * You should have received a copy of the GNU General Public License
  82         * along with this program; if not, write to the Free Software
  83         * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  84         */
  85
  86 #include <glib.h>
  87 #include <stdio.h>
  88 #include <stdlib.h>
  89 #include <string.h>
  90 #include <errno.h>
  91 #include <epan/packet.h>
  92 #include <epan/dissectors/packet-radius.h>
  93 #include <wsutil/file_util.h>
  94
  95 /*
  96  * See
  97  *
  98  *      http://freeradius.org/radiusd/man/dictionary.html
  99  *
 100  * for the format of RADIUS dictionary files.
 101  *
 102  * XXX - features not currently supported:
 103  *
 104  *      dotted number values for the oid field;
 105  *
 106  *      integer64, ipv4prefix, combo-prefix, bool, size, decimal,
 107  *      timeval, struct, extended, long-extended, vsa, evs, vendor,
 108  *      cidr, uint{8,16,32,64}, int{8,16,32,64} as attribute types
 109  *      (some of these aren't documented);
 110  *
 111  *      octets[N], where N is an integer, as an attribute type
 112  *      (not documented in the man page);
 113  *
 114  *      internal, array, concat, and virtual as attribute flags;
 115  *
 116  *      format= for BEGIN-VENDOR.
 117  *
 118  * We should, perhaps, adopt FreeRADIUS's dictionary-parsing code in
 119  * src/lib/dict.c and use that, rather than writing our own parser.
 120  * See bug 13176.
 121  */
 122 #define YY_USER_INIT BEGIN WS_OUT;
 123
 124 #ifdef _WIN32
 125 /* disable Windows VC compiler warning "signed/unsigned mismatch" associated  */
 126 /* with YY_INPUT code generated by flex versions such as 2.5.35.              */
 127 #pragma warning (disable:4018)
 128 #endif
 129
 130 #define ECHO
 131 #define MAX_INCLUDE_DEPTH 10
 132
 133 typedef struct {
 134         YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
 135         int include_stack_ptr;
 136
 137         radius_dictionary_t* dict;
 138         GHashTable* value_strings; /* GArray(value_string) by attribute name */
 139
 140         gchar* attr_name;
 141         gchar* attr_id;
 142         radius_attr_dissector_t* attr_type;
 143         gchar* attr_vendor;
 144         gchar* vendor_name;
 145         guint32 vendor_id;
 146         guint vendor_type_octets;
 147         guint vendor_length_octets;
 148         gboolean vendor_has_flags;
 149         gchar* value_repr;
 150         guint encrypted;
 151         gboolean has_tag;
 152         gchar* current_vendor;
 153         gchar* current_attr;
 154
 155         gchar* directory;
 156         gchar* fullpaths[MAX_INCLUDE_DEPTH];
 157         int linenums[MAX_INCLUDE_DEPTH];
 158
 159         GString* error;
 160 } Radius_scanner_state_t;
 161
 162 static void add_vendor(Radius_scanner_state_t* state, const gchar* name, guint32 id, guint type_octets, guint length_octets, gboolean has_flags);
 163 static gboolean add_attribute(Radius_scanner_state_t* state, const gchar*,const  gchar*, radius_attr_dissector_t,const  gchar*, guint, gboolean, const gchar*);
 164 static gboolean add_tlv(Radius_scanner_state_t* state, const gchar* name, const  gchar* code, radius_attr_dissector_t type, const gchar* attr);
 165 static void add_value(Radius_scanner_state_t* state, const gchar* attrib_name, const  gchar* repr, guint32 value);
 166
 167 /*
 168  * Sleazy hack to suppress compiler warnings in yy_fatal_error().
 169  */
 170 #define YY_EXIT_FAILURE ((void)yyscanner, 2)
 171
 172 /*
 173  * Macros for the allocators, to discard the extra argument.
 174  */
 175 #define Radius_alloc(size, yyscanner)           (void *)malloc(size)
 176 #define Radius_realloc(ptr, size, yyscanner)    (void *)realloc((char *)(ptr), (size))
 177 #define Radius_free(ptr, yyscanner)             free((char *)ptr)
 178
 179 %}
 180
 181 /* Note: FreeRadius allows VENDOR, ATTRIBUTE and VALUE names to contain any non-blank character.
 182  *       Using a negated "blank character class" pattern below for those names fails for some reason
 183  *       so for now the patterns for each name type include those characters found for the corresponding
 184  *       name types in the FreeRadius dictionaries.
 185  */
 186
 187 %START WS_OUT VENDOR VENDOR_W_NAME ATTR ATTR_W_NAME ATTR_W_ID ATTR_W_TYPE ATTR_W_VENDOR VALUE VALUE_W_ATTR VALUE_W_NAME INCLUDE JUNK BEGIN_VENDOR END_VENDOR VENDOR_W_ID VENDOR_W_FORMAT VENDOR_W_TYPE_OCTETS VENDOR_W_LENGTH_OCTETS VENDOR_W_CONTINUATION BEGIN_TLV END_TLV
 188 %%
 189 [:blank:]   ;
 190 #[^\n]*         ;
 191
 192 <JUNK>.*\qn             ;
 193
 194 <WS_OUT>VENDOR { BEGIN VENDOR; }
 195 <WS_OUT>ATTRIBUTE { BEGIN ATTR; }
 196 <WS_OUT>VALUE { BEGIN VALUE; }
 197 <WS_OUT>\$INCLUDE { BEGIN INCLUDE; }
 198 <WS_OUT>BEGIN-VENDOR { BEGIN BEGIN_VENDOR; }
 199 <WS_OUT>END-VENDOR { BEGIN END_VENDOR; }
 200 <WS_OUT>BEGIN-TLV { BEGIN BEGIN_TLV; }
 201 <WS_OUT>END-TLV { BEGIN END_TLV; }
 202
 203 <BEGIN_VENDOR>[0-9a-z_-]+ {
 204     if (yyextra->current_vendor) {
 205         g_free(yyextra->current_vendor);
 206     }
 207     yyextra->current_vendor = g_strdup(yytext);
 208     BEGIN WS_OUT;
 209 }
 210 <END_VENDOR>[^\n]* {
 211     if (yyextra->current_vendor) {
 212         g_free(yyextra->current_vendor);
 213         yyextra->current_vendor = NULL;
 214     }
 215     BEGIN WS_OUT;
 216 }
 217
 218 <BEGIN_TLV>[0-9a-z_-]+ {
 219     if (yyextra->current_attr) {
 220         g_free(yyextra->current_attr);
 221     }
 222     yyextra->current_attr = g_strdup(yytext);
 223     BEGIN WS_OUT;
 224 }
 225 <END_TLV>[^\n]* {
 226     if (yyextra->current_attr) {
 227         g_free(yyextra->current_attr);
 228         yyextra->current_attr = NULL;
 229     }
 230     BEGIN WS_OUT;
 231 }
 232
 233 <VENDOR>[0-9a-z_-]+   {
 234     yyextra->vendor_name = g_strdup(yytext);
 235     yyextra->vendor_type_octets = 1;
 236     yyextra->vendor_length_octets = 1;
 237     yyextra->vendor_has_flags = FALSE;
 238     BEGIN VENDOR_W_NAME;
 239 }
 240 <VENDOR_W_NAME>[0-9]+   {
 241     yyextra->vendor_id = (guint32) strtoul(yytext,NULL,10);
 242     BEGIN VENDOR_W_ID;
 243 }
 244 <VENDOR_W_NAME>0x[0-9a-f]+   {
 245     yyextra->vendor_id = (guint32) strtoul(yytext,NULL,16);
 246     BEGIN VENDOR_W_ID;
 247 }
 248 <VENDOR_W_ID>format= {
 249     BEGIN VENDOR_W_FORMAT;
 250 }
 251 <VENDOR_W_FORMAT>[124] {
 252     yyextra->vendor_type_octets = (guint) strtoul(yytext,NULL,10);
 253     BEGIN VENDOR_W_TYPE_OCTETS;
 254 }
 255 <VENDOR_W_TYPE_OCTETS>,[012] {
 256     yyextra->vendor_length_octets = (guint) strtoul(yytext+1,NULL,10);
 257     BEGIN VENDOR_W_LENGTH_OCTETS;
 258 }
 259 <VENDOR_W_LENGTH_OCTETS>,c {
 260     yyextra->vendor_has_flags = TRUE;
 261     BEGIN VENDOR_W_CONTINUATION;
 262 }
 263 <VENDOR_W_FORMAT>\n |
 264 <VENDOR_W_TYPE_OCTETS>\n |
 265 <VENDOR_W_LENGTH_OCTETS>\n |
 266 <VENDOR_W_CONTINUATION>\n |
 267 <VENDOR_W_ID>\n {
 268     add_vendor(yyextra, yyextra->vendor_name, yyextra->vendor_id, yyextra->vendor_type_octets, yyextra->vendor_length_octets, yyextra->vendor_has_flags);
 269     g_free(yyextra->vendor_name);
 270     BEGIN WS_OUT;
 271 }
 272
 273 <ATTR>[0-9a-z_/.-]+                     { yyextra->attr_name = g_strdup(yytext); yyextra->encrypted = 0; yyextra->has_tag = FALSE; BEGIN ATTR_W_NAME; }
 274 <ATTR_W_NAME>[0-9]+                     { yyextra->attr_id = g_strdup(yytext);  BEGIN ATTR_W_ID;}
 275 <ATTR_W_NAME>0x[0-9a-f]+                { yyextra->attr_id = g_strdup_printf("%u",(int)strtoul(yytext,NULL,16)); BEGIN ATTR_W_ID;}
 276 <ATTR_W_ID>integer                      { yyextra->attr_type = radius_integer;  BEGIN ATTR_W_TYPE; }
 277 <ATTR_W_ID>string                       { yyextra->attr_type = radius_string;  BEGIN ATTR_W_TYPE; }
 278 <ATTR_W_ID>octets                       { yyextra->attr_type = radius_octets;  BEGIN ATTR_W_TYPE; }
 279 <ATTR_W_ID>ipaddr                       { yyextra->attr_type = radius_ipaddr;  BEGIN ATTR_W_TYPE; }
 280 <ATTR_W_ID>ipv6addr                     { yyextra->attr_type = radius_ipv6addr;  BEGIN ATTR_W_TYPE; }
 281 <ATTR_W_ID>ipv6prefix                   { yyextra->attr_type = radius_ipv6prefix;  BEGIN ATTR_W_TYPE; }
 282 <ATTR_W_ID>ipxnet                       { yyextra->attr_type = radius_ipxnet;  BEGIN ATTR_W_TYPE; }
 283 <ATTR_W_ID>date                         { yyextra->attr_type = radius_date;  BEGIN ATTR_W_TYPE; }
 284 <ATTR_W_ID>abinary                      { yyextra->attr_type = radius_abinary;  BEGIN ATTR_W_TYPE; }
 285 <ATTR_W_ID>ether                        { yyextra->attr_type = radius_ether;  BEGIN ATTR_W_TYPE; }
 286 <ATTR_W_ID>ifid                         { yyextra->attr_type = radius_ifid;  BEGIN ATTR_W_TYPE; }
 287 <ATTR_W_ID>byte                         { yyextra->attr_type = radius_integer;  BEGIN ATTR_W_TYPE; }
 288 <ATTR_W_ID>short                        { yyextra->attr_type = radius_integer;  BEGIN ATTR_W_TYPE; }
 289 <ATTR_W_ID>signed                       { yyextra->attr_type = radius_signed;  BEGIN ATTR_W_TYPE; }
 290 <ATTR_W_ID>combo-ip                     { yyextra->attr_type = radius_combo_ip;  BEGIN ATTR_W_TYPE; }
 291 <ATTR_W_ID>tlv                          { yyextra->attr_type = radius_tlv;  BEGIN ATTR_W_TYPE; }
 292 <ATTR_W_ID>[0-9a-z_-]+                  { yyextra->attr_type = radius_octets;  BEGIN ATTR_W_TYPE; }
 293 <ATTR_W_TYPE>has_tag[,]?                { yyextra->has_tag = TRUE; }
 294 <ATTR_W_TYPE>encrypt=[123][,]?          { yyextra->encrypted = (guint) strtoul(yytext+8,NULL,10); }
 295 <ATTR_W_TYPE>[0-9a-z_-]+=([^\n]*)       ;
 296 <ATTR_W_TYPE>[0-9a-z_-]+                {
 297     gboolean attribute_ok;
 298
 299     yyextra->attr_vendor = g_strdup(yytext);
 300     attribute_ok = add_attribute(yyextra, yyextra->attr_name, yyextra->attr_id, yyextra->attr_type, yyextra->attr_vendor, yyextra->encrypted, yyextra->has_tag, yyextra->current_attr);
 301     g_free(yyextra->attr_id);
 302     g_free(yyextra->attr_vendor);
 303     g_free(yyextra->attr_name);
 304     yyextra->attr_id = NULL;
 305     yyextra->attr_vendor = NULL;
 306     yyextra->attr_name = NULL;
 307     if (attribute_ok)
 308         BEGIN WS_OUT;
 309     else
 310         BEGIN JUNK;
 311 }
 312 <ATTR_W_TYPE>\n                                         {
 313     add_attribute(yyextra, yyextra->attr_name, yyextra->attr_id, yyextra->attr_type, yyextra->current_vendor, yyextra->encrypted, yyextra->has_tag, yyextra->current_attr);
 314     g_free(yyextra->attr_id);
 315     g_free(yyextra->attr_name);
 316     yyextra->linenums[yyextra->include_stack_ptr]++;
 317     yyextra->has_tag = FALSE;
 318     yyextra->encrypted=FALSE;
 319     BEGIN WS_OUT;
 320 }
 321 <ATTR_W_VENDOR>\n                                       {
 322     add_attribute(yyextra, yyextra->attr_name, yyextra->attr_id, yyextra->attr_type, yyextra->attr_vendor, yyextra->encrypted, yyextra->has_tag, yyextra->current_attr);
 323     g_free(yyextra->attr_id);
 324     g_free(yyextra->attr_vendor);
 325     g_free(yyextra->attr_name);
 326     yyextra->linenums[yyextra->include_stack_ptr]++;
 327     BEGIN WS_OUT;
 328 };
 329
 330 <VALUE>[0-9a-z_/-]+                             { yyextra->attr_name = g_strdup(yytext); BEGIN VALUE_W_ATTR; }
 331 <VALUE_W_ATTR>[^[:blank:]]+                     { yyextra->value_repr = g_strdup(yytext); BEGIN VALUE_W_NAME; }
 332 <VALUE_W_NAME>[0-9]+                            { add_value(yyextra, yyextra->attr_name,yyextra->value_repr, (guint32) strtoul(yytext,NULL,10));  g_free(yyextra->attr_name); g_free(yyextra->value_repr); BEGIN WS_OUT;}
 333 <VALUE_W_NAME>0x[0-9a-f]+                       { add_value(yyextra, yyextra->attr_name,yyextra->value_repr, (guint32) strtoul(yytext,NULL,16));  g_free(yyextra->attr_name); g_free(yyextra->value_repr); BEGIN WS_OUT;}
 334
 335 <INCLUDE>[^[:blank:]\n]+   {
 336         if ( yyextra->include_stack_ptr >= MAX_INCLUDE_DEPTH ) {
 337                 g_string_append_printf(yyextra->error, "$INCLUDE files nested too deeply\n");
 338                 yyterminate();
 339         }
 340
 341         yyextra->include_stack[yyextra->include_stack_ptr++] = YY_CURRENT_BUFFER;
 342
 343         yyextra->fullpaths[yyextra->include_stack_ptr] = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
 344             yyextra->directory,yytext);
 345
 346         yyin = ws_fopen( yyextra->fullpaths[yyextra->include_stack_ptr], "r" );
 347
 348         if (!yyin) {
 349                 if (errno) {
 350                         g_string_append_printf(yyextra->error,
 351                                         "Could not open file: '%s', error: %s\n",
 352                                         yyextra->fullpaths[yyextra->include_stack_ptr],
 353                                         g_strerror(errno) );
 354                 } else {
 355                         g_string_append_printf(yyextra->error,
 356                                         "Could not open file: '%s', no errno\n",
 357                                         yyextra->fullpaths[yyextra->include_stack_ptr]);
 358                 }
 359                 g_free(yyextra->fullpaths[yyextra->include_stack_ptr]);
 360                 yyextra->fullpaths[yyextra->include_stack_ptr] = NULL;
 361                 yyextra->include_stack_ptr--;
 362         } else {
 363                 yyextra->linenums[yyextra->include_stack_ptr] = 1;
 364                 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE, yyscanner), yyscanner);
 365         }
 366
 367
 368         BEGIN WS_OUT;
 369 }
 370
 371 <<EOF>> {
 372
 373         fclose(yyin);
 374         yyin = NULL;
 375
 376         if ( --yyextra->include_stack_ptr < 0 ) {
 377                 yyterminate();
 378         } else {
 379                 g_free(yyextra->fullpaths[yyextra->include_stack_ptr+1]);
 380                 yyextra->fullpaths[yyextra->include_stack_ptr+1] = NULL;
 381
 382                 Radius__delete_buffer(YY_CURRENT_BUFFER, yyscanner);
 383                 Radius__switch_to_buffer(yyextra->include_stack[yyextra->include_stack_ptr], yyscanner);
 384         }
 385
 386         BEGIN WS_OUT;
 387 }
 388
 389 \n      { yyextra->linenums[yyextra->include_stack_ptr]++; BEGIN WS_OUT; }
 390
 391
 392 %%
 393
 394 static void add_vendor(Radius_scanner_state_t* state, const gchar* name, guint32 id, guint type_octets, guint length_octets, gboolean has_flags) {
 395         radius_vendor_info_t* v;
 396
 397         v = (radius_vendor_info_t *)g_hash_table_lookup(state->dict->vendors_by_id, GUINT_TO_POINTER(id));
 398
 399         if (!v) {
 400                 /*
 401                  * New vendor.
 402                  * Allocate a new entry and insert it into the by-ID and
 403                  * by-name hash tables.
 404                  */
 405                 v = g_new(radius_vendor_info_t,1);
 406                 v->attrs_by_id = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, free_radius_attr_info);
 407                 v->code = id;
 408                 v->ett = -1;
 409                 v->name = g_strdup(name);
 410                 v->type_octets = type_octets;
 411                 v->length_octets = length_octets;
 412                 v->has_flags = has_flags;
 413
 414                 g_hash_table_insert(state->dict->vendors_by_id,GUINT_TO_POINTER(v->code),v);
 415                 g_hash_table_insert(state->dict->vendors_by_name, (gpointer) v->name, v);
 416         } else {
 417                 /*
 418                  * This vendor is already in the table.
 419                  *
 420                  * Assume that the dictionary knows the 'ground truth' about
 421                  * the type/length/has_flags information and thus allow the
 422                  * dictionary to overwrite these values even for vendors that
 423                  * have already been loaded.
 424                  *
 425                  * XXX - this could be due to the vendor being in multiple
 426                  * dictionary files, rather than having been specially
 427                  * entered by the RADIUS dissector, as a side effect of
 428                  * specially entering an attribute; should we report vendors
 429                  * that appear in different dictionaries with different
 430                  * properties?
 431                  */
 432                 v->type_octets = type_octets;
 433                 v->length_octets = length_octets;
 434                 v->has_flags = has_flags;
 435
 436                 /*
 437                  * Did the name change?
 438                  */
 439                 if (g_strcmp0(v->name, name) != 0) {
 440                         /*
 441                          * Yes.  Remove the entry from the by-name hash table
 442                          * and re-insert it with the new name.
 443                          */
 444                         g_hash_table_remove(state->dict->vendors_by_name, (gpointer) v->name);
 445                         g_free((gpointer) v->name);
 446                         v->name = g_strdup(name);
 447                         g_hash_table_insert(state->dict->vendors_by_name, (gpointer) v->name, v);
 448                 }
 449         }
 450 }
 451
 452 static gboolean add_attribute(Radius_scanner_state_t* state, const gchar* name, const  gchar* codestr, radius_attr_dissector_t type, const  gchar* vendor, guint encrypted_flag, gboolean tagged, const gchar* attr) {
 453         radius_attr_info_t* a;
 454         GHashTable* by_id;
 455         guint32 code;
 456
 457         if (attr){
 458                 return add_tlv(state, name, codestr, type, attr);
 459         }
 460
 461
 462         if (vendor) {
 463                 radius_vendor_info_t* v;
 464                 v = (radius_vendor_info_t *)g_hash_table_lookup(state->dict->vendors_by_name,vendor);
 465
 466                 if (! v) {
 467                         g_string_append_printf(state->error, "Vendor: '%s', does not exist in %s:%i \n", vendor, state->fullpaths[state->include_stack_ptr], state->linenums[state->include_stack_ptr] );
 468                         return FALSE;
 469                 } else {
 470                         by_id = v->attrs_by_id;
 471                 }
 472         } else {
 473                 by_id = state->dict->attrs_by_id;
 474         }
 475
 476         code= (guint32) strtoul(codestr, NULL, 10);
 477
 478         a=(radius_attr_info_t*)g_hash_table_lookup(by_id, GUINT_TO_POINTER(code));
 479
 480         if (!a) {
 481                 /*
 482                  * New attribute.
 483                  * Allocate a new entry and insert it into the by-ID and
 484                  * by-name hash tables.
 485                  */
 486                 a = g_new(radius_attr_info_t,1);
 487                 a->code = code;
 488                 a->name = g_strdup(name);
 489                 a->dissector = NULL;
 490                 a->encrypt = encrypted_flag;
 491                 a->tagged =  tagged;
 492                 a->type = type;
 493                 a->vs = NULL;
 494                 a->hf = -1;
 495                 a->hf_alt = -1;
 496                 a->hf_tag = -1;
 497                 a->hf_len = -1;
 498                 a->ett = -1;
 499                 a->tlvs_by_id = NULL;
 500                 g_hash_table_insert(by_id, GUINT_TO_POINTER(code),a);
 501                 g_hash_table_insert(state->dict->attrs_by_name,(gpointer) (a->name),a);
 502         } else {
 503                 /*
 504                  * This attribute is already in the table.
 505                  *
 506                  * Overwrite the encrypted flag, tagged property, and type;
 507                  * the other properties don't get set until after we've
 508                  * finished reading the dictionaries.
 509                  *
 510                  * XXX - this could be due to the attribute being in
 511                  * multiple dictionary files, rather than having been
 512                  * specially entered by the RADIUS dissector to give it
 513                  * a special dissection routine; should we report attributes
 514                  * that appear in different dictionaries with different
 515                  * properties?
 516                  */
 517                 a->encrypt = encrypted_flag;
 518                 a->tagged =  tagged;
 519                 a->type = type;
 520
 521                 /*
 522                  * Did the name change?
 523                  */
 524                 if (g_strcmp0(a->name, name) != 0) {
 525                         /*
 526                          * Yes.  Steal the entry from the by-name hash table
 527                          * and re-insert it with the new name.  (Don't
 528                          * remove it - that calls the free routine, which
 529                          * frees up the entry.)
 530                          */
 531                         g_hash_table_steal(state->dict->attrs_by_name, (gpointer) (a->name));
 532                         g_free((gpointer) a->name);
 533                         a->name = g_strdup(name);
 534                         g_hash_table_insert(state->dict->attrs_by_name, (gpointer) (a->name),a);
 535                 }
 536         }
 537         return TRUE;
 538 }
 539
 540 static gboolean add_tlv(Radius_scanner_state_t* state, const gchar* name, const  gchar* codestr, radius_attr_dissector_t type, const gchar* attr) {
 541         radius_attr_info_t* a;
 542         radius_attr_info_t* s;
 543         guint32 code;
 544
 545         a = (radius_attr_info_t*)g_hash_table_lookup(state->dict->attrs_by_name, attr);
 546
 547         if (! a) {
 548                 g_string_append_printf(state->error, "Attr: '%s', does not exist in %s:%i \n", attr, state->fullpaths[state->include_stack_ptr], state->linenums[state->include_stack_ptr]);
 549                 return FALSE;
 550         }
 551
 552         if (type == radius_tlv) {
 553                 g_string_append_printf(state->error, "sub-TLV: '%s', sub-TLV's type is specified as tlv in %s:%i \n", name, state->fullpaths[state->include_stack_ptr], state->linenums[state->include_stack_ptr]);
 554                 return FALSE;
 555         }
 556
 557
 558         if (! a->tlvs_by_id) {
 559                 a->tlvs_by_id = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, free_radius_attr_info);
 560         }
 561
 562         code = (guint32) strtoul(codestr, NULL, 10);
 563
 564         s = (radius_attr_info_t*)g_hash_table_lookup(a->tlvs_by_id, GUINT_TO_POINTER(code));
 565
 566         if (!s) {
 567                 /*
 568                  * This TLV doesn't yet exist in this attribute's TLVs-by-ID
 569                  * hash table.  Add it.
 570                  */
 571                 s = g_new(radius_attr_info_t,1);
 572                 s->name = g_strdup(name);
 573                 s->dissector = NULL;
 574                 s->code = code;
 575                 s->type = type;
 576                 s->encrypt = FALSE;
 577                 s->tagged = FALSE;
 578                 s->dissector = NULL;
 579                 s->vs = NULL;
 580                 s->hf = -1;
 581                 s->hf_alt = -1;
 582                 s->hf_tag = -1;
 583                 s->hf_len = -1;
 584                 s->ett = -1;
 585                 s->tlvs_by_id = NULL;
 586
 587                 g_hash_table_insert(a->tlvs_by_id,GUINT_TO_POINTER(s->code),s);
 588                 g_hash_table_insert(state->dict->tlvs_by_name,(gpointer) (s->name),s);
 589         }
 590
 591         /*
 592          * If it *does* exist, leave it alone; there shouldn't be duplicate
 593          * entries by name in the dictionaries (even if there might be
 594          * multiple entries for a given attribute in the dictionaries, each
 595          * one adding some TLV values), and we don't directly add entries
 596          * for TLVs in the RADIUS dissector.
 597          *
 598          * XXX - report the duplicate entries?
 599          */
 600         return TRUE;
 601 }
 602
 603 void add_value(Radius_scanner_state_t* state, const gchar* attrib_name, const gchar* repr, guint32 value) {
 604         value_string v;
 605         GArray* a = (GArray*)g_hash_table_lookup(state->value_strings,attrib_name);
 606
 607         if (! a) {
 608                 /* Ensure that the array is zero terminated. */
 609                 a = g_array_new(TRUE, TRUE, sizeof(value_string));
 610                 g_hash_table_insert(state->value_strings, g_strdup(attrib_name), a);
 611         }
 612
 613         v.value = value;
 614         v.strptr = g_strdup(repr);
 615
 616         g_array_append_val(a,v);
 617 }
 618
 619 static void setup_tlvs(gpointer k _U_, gpointer v, gpointer p) {
 620         radius_attr_info_t* s = (radius_attr_info_t*)v;
 621         Radius_scanner_state_t* state = (Radius_scanner_state_t*)p;
 622         gpointer key;
 623
 624         union {
 625                 GArray* a;
 626                 gpointer p;
 627         } vs;
 628
 629         if (g_hash_table_lookup_extended(state->value_strings, s->name, &key, &vs.p)) {
 630                 s->vs = (value_string*)(void *)vs.a->data;
 631                 g_hash_table_steal(state->value_strings, key);
 632                 g_array_free(vs.a, FALSE);
 633                 g_free(key);
 634         }
 635 }
 636
 637 static void setup_attrs(gpointer k _U_, gpointer v, gpointer p) {
 638         radius_attr_info_t* a = (radius_attr_info_t*)v;
 639         Radius_scanner_state_t* state = (Radius_scanner_state_t*)p;
 640         gpointer key;
 641
 642         union {
 643                 GArray* a;
 644                 gpointer p;
 645         } vs;
 646
 647         if (g_hash_table_lookup_extended(state->value_strings, a->name, &key, &vs.p) ) {
 648                 a->vs = (value_string*)(void *)vs.a->data;
 649                 g_hash_table_steal(state->value_strings, key);
 650                 g_array_free(vs.a, FALSE);
 651                 g_free(key);
 652         }
 653
 654         if (a->tlvs_by_id) {
 655                 g_hash_table_foreach(a->tlvs_by_id, setup_tlvs, p);
 656         }
 657 }
 658
 659 static void setup_vendors(gpointer k _U_, gpointer v, gpointer p) {
 660         radius_vendor_info_t* vnd = (radius_vendor_info_t*)v;
 661
 662         g_hash_table_foreach(vnd->attrs_by_id,setup_attrs,p);
 663 }
 664
 665 static void destroy_value_strings(gpointer v) {
 666         value_string* vs = (value_string*)(void *)(((GArray*)v)->data);
 667
 668         for (;vs->strptr;vs++) {
 669                 g_free((void*)vs->strptr);
 670         }
 671
 672         g_array_free((GArray*)v,TRUE);
 673 }
 674
 675 gboolean radius_load_dictionary (radius_dictionary_t* d, gchar* dir, const gchar* filename, gchar** err_str) {
 676         FILE *in;
 677         yyscan_t scanner;
 678         Radius_scanner_state_t state;
 679         int i;
 680
 681         state.include_stack_ptr = 0;
 682
 683         state.dict = d;
 684         state.value_strings = NULL;
 685
 686         state.attr_name = NULL;
 687         state.attr_id = NULL;
 688         state.attr_type = NULL;
 689         state.attr_vendor = NULL;
 690         state.vendor_name = NULL;
 691         state.vendor_id = 0;
 692         state.vendor_type_octets = 1;
 693         state.vendor_length_octets = 1;
 694         state.vendor_has_flags = FALSE;
 695         state.value_repr = NULL;
 696         state.encrypted = 0;
 697         state.has_tag = FALSE;
 698         state.current_vendor = NULL;
 699         state.current_attr = NULL;
 700
 701         state.directory = dir;
 702
 703         state.fullpaths[0] = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
 704             state.directory,filename);
 705         state.linenums[0] = 1;
 706         for (i = 1; i < MAX_INCLUDE_DEPTH; i++) {
 707                 state.fullpaths[i] = NULL;
 708                 state.linenums[i] = 1;
 709         }
 710
 711         state.error = g_string_new("");
 712
 713         in = ws_fopen(state.fullpaths[0],"r");
 714
 715         if (!in) {
 716                 g_string_append_printf(state.error, "Could not open file: '%s', error: %s\n", state.fullpaths[0], g_strerror(errno));
 717                 g_free(state.fullpaths[0]);
 718                 *err_str = g_string_free(state.error,FALSE);
 719                 return FALSE;
 720         }
 721
 722         state.value_strings = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, destroy_value_strings);
 723
 724         if (Radius_lex_init(&scanner) != 0) {
 725                 g_string_append_printf(state.error, "Can't initialize scanner: %s",
 726                     strerror(errno));
 727                 fclose(in);
 728                 g_free(state.fullpaths[0]);
 729                 *err_str = g_string_free(state.error,FALSE);
 730                 return FALSE;
 731         }
 732
 733         Radius_set_in(in, scanner);
 734
 735         /* Associate the state with the scanner */
 736         Radius_set_extra(&state, scanner);
 737
 738         Radius_lex(scanner);
 739
 740         Radius_lex_destroy(scanner);
 741         /*
 742          * XXX - can the lexical analyzer terminate without closing
 743          * all open input files?
 744          */
 745
 746         for (i = 0; i < MAX_INCLUDE_DEPTH; i++) {
 747                 if (state.fullpaths[i])
 748                         g_free(state.fullpaths[i]);
 749         }
 750
 751         g_hash_table_foreach(state.dict->attrs_by_id,setup_attrs,&state);
 752         g_hash_table_foreach(state.dict->vendors_by_id,setup_vendors,&state);
 753         g_hash_table_destroy(state.value_strings);
 754
 755         if (state.error->len > 0) {
 756                 *err_str = g_string_free(state.error,FALSE);
 757                 return FALSE;
 758         } else {
 759                 *err_str = NULL;
 760                 g_string_free(state.error,TRUE);
 761                 return TRUE;
 762         }
 763 }
 764
 765 /*
 766  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 767  *
 768  * Local variables:
 769  * c-basic-offset: 8
 770  * tab-width: 8
 771  * indent-tabs-mode: t
 772  * End:
 773  *
 774  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 775  * :indentSize=8:tabSize=8:noTabs=false:
 776  */