epan/dissectors/packet-xml.c

   1 /* packet-xml.c
   2  * wireshark's xml dissector .
   3  *
   4  * (C) 2005, Luis E. Garcia Ontanon.
   5  *
   6  * $Id$
   7  *
   8  * Refer to the AUTHORS file or the AUTHORS section in the man page
   9  * for contacting the author(s) of this file.
  10  *
  11  * Wireshark - Network traffic analyzer
  12  * By Gerald Combs <gerald@wireshark.org>
  13  * Copyright 1998 Gerald Combs
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #ifdef HAVE_DIRENT_H
  35 #include <dirent.h>
  36 #endif
  37
  38 #include <ctype.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <stdarg.h>
  42 #include <errno.h>
  43
  44 #include <stdio.h>
  45
  46 #include <glib.h>
  47 #include <epan/emem.h>
  48 #include <epan/packet.h>
  49 #include <epan/strutil.h>
  50 #include <epan/tvbparse.h>
  51 #include <epan/dtd.h>
  52 #include <epan/report_err.h>
  53 #include <epan/filesystem.h>
  54 #include <epan/prefs.h>
  55 #include <epan/garrayfix.h>
  56
  57 typedef struct _xml_ns_t {
  58     /* the name of this namespace */
  59         gchar* name;
  60
  61     /* its fully qualified name */
  62         gchar* fqn;
  63
  64         /* the contents of the whole element from <> to </> */
  65         int hf_tag;
  66
  67         /* chunks of cdata from <> to </> excluding sub tags */
  68         int hf_cdata;
  69
  70     /* the subtree for its sub items  */
  71         gint ett;
  72
  73         GHashTable* attributes;
  74     /*  key:   the attribute name
  75         value: hf_id of what's between quotes */
  76
  77     /* the namespace's namespaces */
  78     GHashTable* elements;
  79     /*  key:   the element name
  80         value: the child namespace */
  81
  82         GPtrArray* element_names;
  83     /* imported directly from the parser and used while building the namespace */
  84
  85 } xml_ns_t;
  86
  87 typedef struct {
  88         proto_tree* tree;
  89         proto_item* item;
  90         proto_item* last_item;
  91         xml_ns_t* ns;
  92         int start_offset;
  93 } xml_frame_t;
  94
  95 struct _attr_reg_data {
  96         GArray* hf;
  97         gchar* basename;
  98 };
  99
 100
 101 static gint ett_dtd = -1;
 102 static gint ett_xmpli = -1;
 103
 104 static int hf_unknowwn_attrib = -1;
 105 static int hf_comment = -1;
 106 static int hf_xmlpi = -1;
 107 static int hf_dtd_tag = -1;
 108 static int hf_doctype = -1;
 109
 110 /* dissector handles */
 111 static dissector_handle_t xml_handle;
 112
 113 /* parser definitions */
 114 static tvbparse_wanted_t* want;
 115 static tvbparse_wanted_t* want_ignore;
 116 static tvbparse_wanted_t* want_heur;
 117
 118 static GHashTable* xmpli_names;
 119 static GHashTable* media_types;
 120
 121 static xml_ns_t xml_ns = {"xml","/",-1,-1,-1,NULL,NULL,NULL};
 122 static xml_ns_t unknown_ns = {"unknown","?",-1,-1,-1,NULL,NULL,NULL};
 123 static xml_ns_t* root_ns;
 124
 125 static gboolean pref_heuristic_media = FALSE;
 126 static gboolean pref_heuristic_tcp = FALSE;
 127 static gboolean pref_heuristic_media_save = FALSE;
 128 static gboolean pref_heuristic_tcp_save = FALSE;
 129 static range_t *global_xml_tcp_range = NULL;
 130 static range_t *xml_tcp_range = NULL;
 131
 132 #define XML_CDATA -1000
 133 #define XML_SCOPED_NAME -1001
 134
 135
 136 GArray* hf_arr;
 137 GArray* ett_arr;
 138
 139 static const gchar* default_media_types[] = {
 140         "text/xml",
 141         "text/vnd.wap.wml",
 142         "text/vnd.wap.si",
 143         "text/vnd.wap.sl",
 144         "text/vnd.wap.co",
 145         "text/vnd.wap.emn",
 146         "application/auth-policy+xml",
 147         "application/cpim-pidf+xml",
 148         "application/cpl+xml",
 149         "application/mathml+xml",
 150         "application/media_control+xml",
 151         "application/note+xml",
 152         "application/pidf+xml",
 153         "application/poc-settings+xml",
 154         "application/rdf+xml",
 155         "application/reginfo+xml",
 156         "application/resource-lists+xml",
 157         "application/rlmi+xml",
 158         "application/rls-services+xml",
 159         "application/smil",
 160         "application/simple-filter+xml",
 161         "application/soap+xml",
 162         "application/vnd.wv.csp+xml",
 163         "application/vnd.wv.csp.xml",
 164         "application/watcherinfo+xml",
 165         "application/xcap-att+xml",
 166         "application/xcap-caps+xml",
 167         "application/xcap-diff+xml",
 168         "application/xcap-el+xml",
 169         "application/xcap-error+xml",
 170         "application/xcap-ns+xml",
 171         "application/xml",
 172         "application/xml-dtd",
 173         "application/xpidf+xml",
 174         "application/xslt+xml",
 175         "image/svg+xml",
 176 };
 177
 178 static void
 179 dissect_xml(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 180 {
 181         tvbparse_t* tt;
 182         tvbparse_elem_t* tok = NULL;
 183         static GPtrArray* stack = NULL;
 184         xml_frame_t* current_frame;
 185         char* colinfo_str;
 186
 187         if(!tree) return;
 188
 189         if (stack != NULL)
 190                 g_ptr_array_free(stack,TRUE);
 191
 192         stack = g_ptr_array_new();
 193         current_frame = ep_alloc(sizeof(xml_frame_t));
 194         g_ptr_array_add(stack,current_frame);
 195
 196         tt = tvbparse_init(tvb,0,-1,stack,want_ignore);
 197         current_frame->start_offset = 0;
 198
 199         root_ns = NULL;
 200
 201         if (pinfo->match_string)
 202                 root_ns = g_hash_table_lookup(media_types,pinfo->match_string);
 203
 204         if (! root_ns ) {
 205                 root_ns = &xml_ns;
 206                 colinfo_str = "/XML";
 207         } else {
 208                 colinfo_str = ep_strdup_printf("/%s",root_ns->name);
 209                 g_strup(colinfo_str);
 210         }
 211
 212         if (check_col(pinfo->cinfo, COL_PROTOCOL))
 213                 col_append_str(pinfo->cinfo, COL_PROTOCOL, colinfo_str);
 214
 215         current_frame->ns = root_ns;
 216
 217         current_frame->item = proto_tree_add_item(tree,current_frame->ns->hf_tag,tvb,0,-1,FALSE);
 218         current_frame->tree = proto_item_add_subtree(current_frame->item,current_frame->ns->ett);
 219         current_frame->last_item = current_frame->item;
 220
 221         while(( tok = tvbparse_get(tt, want) )) ;
 222 }
 223
 224 static gboolean dissect_xml_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
 225     if ( (pref_heuristic_media || pref_heuristic_tcp)
 226                   && tvbparse_peek(tvbparse_init(tvb,0,-1,NULL,want_ignore), want_heur)) {
 227         dissect_xml(tvb, pinfo, tree);
 228         return TRUE;
 229     } else {
 230         return FALSE;
 231     }
 232 }
 233
 234 static void after_token(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 235         GPtrArray* stack = tvbparse_data;
 236         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 237         int hfid;
 238         proto_item* pi;
 239
 240         if (tok->id == XML_CDATA) {
 241                 hfid = current_frame->ns ? current_frame->ns->hf_cdata : xml_ns.hf_cdata;
 242         } else if ( tok->id > 0) {
 243                 hfid = tok->id;
 244         } else {
 245                 hfid = xml_ns.hf_cdata;
 246         }
 247
 248         pi = proto_tree_add_item(current_frame->tree, hfid, tok->tvb, tok->offset, tok->len, FALSE);
 249
 250         proto_item_set_text(pi, "%s",
 251                                                 tvb_format_text(tok->tvb,tok->offset,tok->len));
 252 }
 253
 254 static void before_xmpli(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 255         GPtrArray* stack = tvbparse_data;
 256         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 257         proto_item* pi;
 258         proto_tree* pt;
 259         tvbparse_elem_t* name_tok = tok->sub->next;
 260         gchar* name = (gchar*)tvb_get_ephemeral_string(name_tok->tvb,name_tok->offset,name_tok->len);
 261         xml_ns_t* ns = g_hash_table_lookup(xmpli_names,name);
 262
 263         int hf_tag;
 264         gint ett;
 265
 266         g_strdown(name);
 267         if (!ns) {
 268                 hf_tag = hf_xmlpi;
 269                 ett = ett_xmpli;
 270         } else {
 271                 hf_tag = ns->hf_tag;
 272                 ett = ns->ett;
 273         }
 274
 275         pi = proto_tree_add_item(current_frame->tree,hf_tag,tok->tvb,tok->offset,tok->len,FALSE);
 276
 277         proto_item_set_text(pi, "%s", tvb_format_text(tok->tvb,tok->offset,(name_tok->offset - tok->offset) + name_tok->len));
 278
 279         pt = proto_item_add_subtree(pi,ett);
 280
 281         current_frame = ep_alloc(sizeof(xml_frame_t));
 282         current_frame->item = pi;
 283         current_frame->last_item = pi;
 284         current_frame->tree = pt;
 285         current_frame->start_offset = tok->offset;
 286         current_frame->ns = ns;
 287
 288         g_ptr_array_add(stack,current_frame);
 289
 290 }
 291
 292 static void after_xmlpi(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 293         GPtrArray* stack = tvbparse_data;
 294         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 295
 296         proto_tree_add_text(current_frame->tree,
 297                                                    tok->tvb, tok->offset, tok->len,
 298                                                    tvb_format_text(tok->tvb,tok->offset,tok->len));
 299
 300         if (stack->len > 1) {
 301                 g_ptr_array_remove_index_fast(stack,stack->len - 1);
 302         } else {
 303                 proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened xmpli tag ]");
 304         }
 305 }
 306
 307 static void before_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 308         GPtrArray* stack = tvbparse_data;
 309         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 310         tvbparse_elem_t* name_tok = tok->sub->next;
 311     gchar* root_name;
 312         gchar* name;
 313         xml_ns_t* ns;
 314         xml_frame_t* new_frame;
 315         proto_item* pi;
 316         proto_tree* pt;
 317
 318         if (name_tok->sub->id == XML_SCOPED_NAME) {
 319         tvbparse_elem_t* root_tok = name_tok->sub->sub;
 320         tvbparse_elem_t* leaf_tok = name_tok->sub->sub->next->next;
 321         xml_ns_t* nameroot_ns;
 322
 323         root_name = (gchar*)tvb_get_ephemeral_string(root_tok->tvb,root_tok->offset,root_tok->len);
 324         name = (gchar*)tvb_get_ephemeral_string(leaf_tok->tvb,leaf_tok->offset,leaf_tok->len);
 325
 326         nameroot_ns = g_hash_table_lookup(xml_ns.elements,root_name);
 327
 328         if(nameroot_ns) {
 329             ns = g_hash_table_lookup(nameroot_ns->elements,name);
 330             if (!ns) {
 331                 ns = &unknown_ns;
 332             }
 333         } else {
 334             ns = &unknown_ns;
 335         }
 336
 337     } else {
 338         name = (gchar*)tvb_get_ephemeral_string(name_tok->tvb,name_tok->offset,name_tok->len);
 339         g_strdown(name);
 340
 341         if(current_frame->ns) {
 342                         ns = g_hash_table_lookup(current_frame->ns->elements,name);
 343
 344                         if (!ns) {
 345                                 if (! ( ns = g_hash_table_lookup(root_ns->elements,name) ) ) {
 346                                         ns = &unknown_ns;
 347                                 }
 348                         }
 349                 } else {
 350                         ns = &unknown_ns;
 351                 }
 352     }
 353
 354     pi = proto_tree_add_item(current_frame->tree,ns->hf_tag,tok->tvb,tok->offset,tok->len,FALSE);
 355         proto_item_set_text(pi, "%s", tvb_format_text(tok->tvb,tok->offset,(name_tok->offset - tok->offset) + name_tok->len));
 356
 357         pt = proto_item_add_subtree(pi,ns->ett);
 358
 359         new_frame = ep_alloc(sizeof(xml_frame_t));
 360         new_frame->item = pi;
 361         new_frame->last_item = pi;
 362         new_frame->tree = pt;
 363         new_frame->start_offset = tok->offset;
 364         new_frame->ns = ns;
 365
 366         g_ptr_array_add(stack,new_frame);
 367
 368 }
 369
 370 static void after_open_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok _U_) {
 371         GPtrArray* stack = tvbparse_data;
 372         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 373
 374         proto_item_append_text(current_frame->last_item,">");
 375 }
 376
 377 static void after_closed_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 378         GPtrArray* stack = tvbparse_data;
 379         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 380
 381         proto_item_append_text(current_frame->last_item,"/>");
 382
 383         if (stack->len > 1) {
 384                 g_ptr_array_remove_index_fast(stack,stack->len - 1);
 385         } else {
 386                 proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened tag ]");
 387         }
 388 }
 389
 390 static void after_untag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
 391         GPtrArray* stack = tvbparse_data;
 392         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 393
 394         proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
 395
 396         proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"%s",
 397                                                 tvb_format_text(tok->tvb,tok->offset,tok->len));
 398
 399         if (stack->len > 1) {
 400                 g_ptr_array_remove_index_fast(stack,stack->len - 1);
 401         } else {
 402                 proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,
 403                                                         "[ ERROR: Closing an unopened tag ]");
 404         }
 405 }
 406
 407 static void before_dtd_doctype(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
 408         GPtrArray* stack = tvbparse_data;
 409         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 410         tvbparse_elem_t* name_tok = tok->sub->next->next->next->sub->sub;
 411         proto_tree* dtd_item = proto_tree_add_item(current_frame->tree, hf_doctype,
 412                                                                                            name_tok->tvb, name_tok->offset, name_tok->len, FALSE);
 413
 414         proto_item_set_text(dtd_item,"%s",tvb_format_text(tok->tvb,tok->offset,tok->len));
 415
 416         current_frame = ep_alloc(sizeof(xml_frame_t));
 417         current_frame->item = dtd_item;
 418         current_frame->last_item = dtd_item;
 419         current_frame->tree = proto_item_add_subtree(dtd_item,ett_dtd);
 420         current_frame->start_offset = tok->offset;
 421         current_frame->ns = NULL;
 422
 423         g_ptr_array_add(stack,current_frame);
 424 }
 425
 426 static void pop_stack(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok _U_) {
 427         GPtrArray* stack = tvbparse_data;
 428         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 429
 430         if (stack->len > 1) {
 431                 g_ptr_array_remove_index_fast(stack,stack->len - 1);
 432         } else {
 433                 proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,
 434                                                         "[ ERROR: Closing an unopened tag ]");
 435         }
 436 }
 437
 438 static void after_dtd_close(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
 439         GPtrArray* stack = tvbparse_data;
 440         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 441
 442         proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"%s",
 443                                                 tvb_format_text(tok->tvb,tok->offset,tok->len));
 444         if (stack->len > 1) {
 445                 g_ptr_array_remove_index_fast(stack,stack->len - 1);
 446         } else {
 447                 proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened tag ]");
 448         }
 449 }
 450
 451 static void get_attrib_value(void* tvbparse_data _U_, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 452         tok->data = tok->sub;
 453 }
 454
 455 static void after_attrib(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
 456         GPtrArray* stack = tvbparse_data;
 457         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 458         gchar* name = (gchar*)tvb_get_ephemeral_string(tok->sub->tvb,tok->sub->offset,tok->sub->len);
 459         tvbparse_elem_t* value = tok->sub->next->next->data;
 460         int* hfidp;
 461         int hfid;
 462
 463         g_strdown(name);
 464         if(current_frame->ns && (hfidp = g_hash_table_lookup(current_frame->ns->attributes,name) )) {
 465                 hfid = *hfidp;
 466         } else {
 467                 hfid = hf_unknowwn_attrib;
 468                 value = tok;
 469         }
 470
 471         current_frame->last_item = proto_tree_add_item(current_frame->tree,hfid,value->tvb,value->offset,value->len,FALSE);
 472         proto_item_set_text(current_frame->last_item, "%s", tvb_format_text(tok->tvb,tok->offset,tok->len));
 473
 474 }
 475
 476 static void unrecognized_token(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok _U_){
 477         GPtrArray* stack = tvbparse_data;
 478         xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
 479
 480         proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Unrecognized text ]");
 481
 482 }
 483
 484
 485
 486 static void init_xml_parser(void) {
 487         tvbparse_wanted_t* want_name = tvbparse_chars(-1,1,0,"abcdefghijklmnopqrstuvwxyz-_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789",NULL,NULL,NULL);
 488         tvbparse_wanted_t* want_attr_name = tvbparse_chars(-1,1,0,"abcdefghijklmnopqrstuvwxyz-_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:",NULL,NULL,NULL);
 489
 490     tvbparse_wanted_t* want_scoped_name = tvbparse_set_seq(XML_SCOPED_NAME, NULL, NULL, NULL,
 491                                                            want_name,
 492                                                            tvbparse_char(-1,":",NULL,NULL,NULL),
 493                                                            want_name,
 494                                                            NULL);
 495
 496     tvbparse_wanted_t* want_tag_name = tvbparse_set_oneof(0, NULL, NULL, NULL,
 497                                                           want_scoped_name,
 498                                                           want_name,
 499                                                           NULL);
 500
 501     tvbparse_wanted_t* want_attrib_value = tvbparse_set_oneof(0, NULL, NULL, get_attrib_value,
 502                                                               tvbparse_quoted(-1, NULL, NULL, tvbparse_shrink_token_cb,'\"','\\'),
 503                                                               tvbparse_quoted(-1, NULL, NULL, tvbparse_shrink_token_cb,'\'','\\'),
 504                                                               tvbparse_chars(-1,1,0,"0123456789",NULL,NULL,NULL),
 505                                                               want_name,
 506                                                               NULL);
 507
 508         tvbparse_wanted_t* want_attributes = tvbparse_one_or_more(-1, NULL, NULL, NULL,
 509                                                                                                                           tvbparse_set_seq(-1, NULL, NULL, after_attrib,
 510                                                                                want_attr_name,
 511                                                                                                                                                            tvbparse_char(-1,"=",NULL,NULL,NULL),
 512                                                                                                                                                            want_attrib_value,
 513                                                                                                                                                            NULL));
 514
 515         tvbparse_wanted_t* want_stoptag = tvbparse_set_oneof(-1,NULL,NULL,NULL,
 516                                                                                                                  tvbparse_char(-1, ">", NULL, NULL, after_open_tag),
 517                                                                                                                  tvbparse_string(-1, "/>", NULL, NULL, after_closed_tag),
 518                                                                                                                  NULL);
 519
 520         tvbparse_wanted_t* want_stopxmlpi = tvbparse_string(-1,"?>",NULL,NULL,after_xmlpi);
 521
 522     tvbparse_wanted_t* want_comment = tvbparse_set_seq(hf_comment,NULL,NULL,after_token,
 523                                                        tvbparse_string(-1,"<!--",NULL,NULL,NULL),
 524                                                        tvbparse_until(-1,NULL,NULL,NULL,
 525                                                                       tvbparse_string(-1,"-->",NULL,NULL,NULL),
 526                                                                       TP_UNTIL_INCLUDE),
 527                                                        NULL);
 528
 529     tvbparse_wanted_t* want_xmlpi = tvbparse_set_seq(hf_xmlpi,NULL,before_xmpli,NULL,
 530                                                      tvbparse_string(-1,"<?",NULL,NULL,NULL),
 531                                                      want_name,
 532                                                      tvbparse_set_oneof(-1,NULL,NULL,NULL,
 533                                                                         want_stopxmlpi,
 534                                                                         tvbparse_set_seq(-1,NULL,NULL,NULL,
 535                                                                                          want_attributes,
 536                                                                                          want_stopxmlpi,
 537                                                                                          NULL),
 538                                                                         NULL),
 539                                                      NULL);
 540
 541     tvbparse_wanted_t* want_closing_tag = tvbparse_set_seq(0,NULL,NULL,after_untag,
 542                                                            tvbparse_char(-1, "<", NULL, NULL, NULL),
 543                                                            tvbparse_char(-1, "/", NULL, NULL, NULL),
 544                                                            want_tag_name,
 545                                                            tvbparse_char(-1, ">", NULL, NULL, NULL),
 546                                                            NULL);
 547
 548     tvbparse_wanted_t* want_doctype_start = tvbparse_set_seq(-1,NULL,before_dtd_doctype,NULL,
 549                                                              tvbparse_char(-1,"<",NULL,NULL,NULL),
 550                                                              tvbparse_char(-1,"!",NULL,NULL,NULL),
 551                                                              tvbparse_casestring(-1,"DOCTYPE",NULL,NULL,NULL),
 552                                                              tvbparse_set_oneof(-1,NULL,NULL,NULL,
 553                                                                                 tvbparse_set_seq(-1,NULL,NULL,NULL,
 554                                                                                                  want_name,
 555                                                                                                  tvbparse_char(-1,"[",NULL,NULL,NULL),
 556                                                                                                  NULL),
 557                                                                                 tvbparse_set_seq(-1,NULL,NULL,pop_stack,
 558                                                                                                  want_name,
 559                                                                                                  tvbparse_set_oneof(-1,NULL,NULL,NULL,
 560                                                                                                                     tvbparse_casestring(-1,"PUBLIC",NULL,NULL,NULL),
 561                                                                                                                     tvbparse_casestring(-1,"SYSTEM",NULL,NULL,NULL),
 562                                                                                                                     NULL),
 563                                                                                                  tvbparse_until(-1,NULL,NULL,NULL,
 564                                                                                                                 tvbparse_char(-1,">",NULL,NULL,NULL),
 565                                                                                                                 TP_UNTIL_INCLUDE),
 566                                                                                                  NULL),
 567                                                                                 NULL),
 568                                                              NULL);
 569
 570     tvbparse_wanted_t* want_dtd_tag = tvbparse_set_seq(hf_dtd_tag,NULL,NULL,after_token,
 571                                                        tvbparse_char(-1,"<",NULL,NULL,NULL),
 572                                                        tvbparse_char(-1,"!",NULL,NULL,NULL),
 573                                                        tvbparse_until(-1,NULL,NULL,NULL,
 574                                                                       tvbparse_char(-1, ">", NULL, NULL, NULL),
 575                                                                       TP_UNTIL_INCLUDE),
 576                                                        NULL);
 577
 578     tvbparse_wanted_t* want_tag = tvbparse_set_seq(-1, NULL, before_tag, NULL,
 579                                                    tvbparse_char(-1,"<",NULL,NULL,NULL),
 580                                                    want_tag_name,
 581                                                    tvbparse_set_oneof(-1,NULL,NULL,NULL,
 582                                                                       tvbparse_set_seq(-1,NULL,NULL,NULL,
 583                                                                                        want_attributes,
 584                                                                                        want_stoptag,
 585                                                                                        NULL),
 586                                                                       want_stoptag,
 587                                                                       NULL),
 588                                                    NULL);
 589
 590     tvbparse_wanted_t* want_dtd_close = tvbparse_set_seq(-1,NULL,NULL,after_dtd_close,
 591                                                          tvbparse_char(-1,"]",NULL,NULL,NULL),
 592                                                          tvbparse_char(-1,">",NULL,NULL,NULL),
 593                                                          NULL);
 594
 595     want_ignore = tvbparse_chars(-1,1,0," \t\r\n",NULL,NULL,NULL);
 596
 597
 598         want = tvbparse_set_oneof(-1, NULL, NULL, NULL,
 599                                                           want_comment,
 600                                                           want_xmlpi,
 601                                                           want_closing_tag,
 602                                                           want_doctype_start,
 603                                                           want_dtd_close,
 604                                                           want_dtd_tag,
 605                                                           want_tag,
 606                                                           tvbparse_not_chars(XML_CDATA,1,0,"<",NULL,NULL,after_token),
 607                                                           tvbparse_not_chars(-1,1,0," \t\r\n",NULL,NULL,unrecognized_token),
 608                                                           NULL);
 609
 610     want_heur = tvbparse_set_oneof(-1, NULL, NULL, NULL,
 611                                    want_comment,
 612                                    want_xmlpi,
 613                                    want_doctype_start,
 614                                    want_dtd_tag,
 615                                    want_tag,
 616                                    NULL);
 617
 618 }
 619
 620
 621 static xml_ns_t* xml_new_namespace(GHashTable* hash, gchar* name, ...) {
 622         xml_ns_t* ns = g_malloc(sizeof(xml_ns_t));
 623         va_list ap;
 624         gchar* attr_name;
 625
 626         ns->name = g_strdup(name);
 627         ns->hf_tag = -1;
 628         ns->hf_cdata = -1;
 629         ns->ett = -1;
 630         ns->attributes = g_hash_table_new(g_str_hash,g_str_equal);
 631         ns->elements = g_hash_table_new(g_str_hash,g_str_equal);
 632
 633         va_start(ap,name);
 634
 635         while(( attr_name = va_arg(ap,gchar*) )) {
 636                 int* hfp = g_malloc(sizeof(int));
 637                 *hfp = -1;
 638                 g_hash_table_insert(ns->attributes,g_strdup(attr_name),hfp);
 639         };
 640
 641         va_end(ap);
 642
 643         g_hash_table_insert(hash,ns->name,ns);
 644
 645         return ns;
 646 }
 647
 648
 649 static void add_xml_field(GArray* hfs, int* p_id, gchar* name, gchar* fqn) {
 650         hf_register_info hfri;
 651
 652         hfri.p_id = p_id;
 653         hfri.hfinfo.name = name;
 654         hfri.hfinfo.abbrev = fqn;
 655         hfri.hfinfo.type = FT_STRING;
 656         hfri.hfinfo.display = BASE_NONE;
 657         hfri.hfinfo.strings = NULL;
 658         hfri.hfinfo.bitmask = 0x0;
 659         hfri.hfinfo.blurb = "";
 660         hfri.hfinfo.id = 0;
 661         hfri.hfinfo.parent = 0;
 662         hfri.hfinfo.ref_count = 0;
 663         hfri.hfinfo.bitshift = 0;
 664         hfri.hfinfo.same_name_next = NULL;
 665         hfri.hfinfo.same_name_prev = NULL;
 666
 667         g_array_append_val(hfs,hfri);
 668 }
 669
 670 static void add_xml_attribute_names(gpointer k, gpointer v, gpointer p) {
 671         struct _attr_reg_data* d = p;
 672         gchar* basename = g_strdup_printf("%s.%s",d->basename,(gchar*)k);
 673         add_xml_field(d->hf, (int*) v, (gchar*)k, basename);
 674 }
 675
 676
 677 static void add_xmlpi_namespace(gpointer k _U_, gpointer v, gpointer p) {
 678         xml_ns_t* ns = v;
 679         gchar* basename = g_strdup_printf("%s.%s",(gchar*)p,ns->name);
 680         gint* ett_p = &(ns->ett);
 681         struct _attr_reg_data d;
 682
 683         add_xml_field(hf_arr, &(ns->hf_tag), basename, basename);
 684
 685         g_array_append_val(ett_arr,ett_p);
 686
 687         d.basename = basename;
 688         d.hf = hf_arr;
 689
 690         g_hash_table_foreach(ns->attributes,add_xml_attribute_names,&d);
 691
 692 }
 693
 694 static void destroy_dtd_data(dtd_build_data_t* dtd_data) {
 695
 696         if(dtd_data->proto_name) g_free(dtd_data->proto_name);
 697         if(dtd_data->media_type) g_free(dtd_data->media_type);
 698         if(dtd_data->description) g_free(dtd_data->description);
 699         if(dtd_data->proto_root) g_free(dtd_data->proto_root);
 700
 701     g_string_free(dtd_data->error,TRUE);
 702
 703
 704         while(dtd_data->elements->len) {
 705                 dtd_named_list_t* nl = g_ptr_array_remove_index_fast(dtd_data->elements,0);
 706                 g_ptr_array_free(nl->list,TRUE);
 707                 g_free(nl);
 708         }
 709
 710         g_ptr_array_free(dtd_data->elements,TRUE);
 711
 712         while(dtd_data->attributes->len) {
 713                 dtd_named_list_t* nl = g_ptr_array_remove_index_fast(dtd_data->attributes,0);
 714                 g_ptr_array_free(nl->list,TRUE);
 715                 g_free(nl);
 716         }
 717
 718         g_ptr_array_free(dtd_data->attributes,TRUE);
 719
 720         g_free(dtd_data);
 721
 722 }
 723
 724
 725 static void copy_attrib_item(gpointer k, gpointer v _U_, gpointer p) {
 726         gchar* key = g_strdup(k);
 727         int* value = g_malloc(sizeof(int));
 728         GHashTable* dst = p;
 729
 730         *value = -1;
 731         g_hash_table_insert(dst,key,value);
 732
 733 }
 734
 735 static GHashTable* copy_attributes_hash(GHashTable* src) {
 736         GHashTable* dst = g_hash_table_new(g_str_hash,g_str_equal);
 737
 738         g_hash_table_foreach(src,copy_attrib_item,dst);
 739
 740         return dst;
 741 }
 742
 743 static xml_ns_t* duplicate_element(xml_ns_t* orig) {
 744         xml_ns_t* new_item  = g_malloc(sizeof(xml_ns_t));
 745         guint i;
 746
 747         new_item->name = g_strdup(orig->name);
 748         new_item->hf_tag = -1;
 749         new_item->hf_cdata = -1;
 750         new_item->ett = -1;
 751         new_item->attributes = copy_attributes_hash(orig->attributes);
 752         new_item->elements =  g_hash_table_new(g_str_hash,g_str_equal);
 753         new_item->element_names = g_ptr_array_new();
 754
 755         for(i=0; i < orig->element_names->len; i++) {
 756                 g_ptr_array_add(new_item->element_names,
 757                                                    g_ptr_array_index(orig->element_names,i));
 758         }
 759
 760         return new_item;
 761 }
 762
 763 static gchar* fully_qualified_name(GPtrArray* hier, gchar* name, gchar* proto_name) {
 764         guint i;
 765         GString* s = g_string_new(proto_name);
 766         gchar* str;
 767         g_string_append(s,".");
 768
 769         for (i = 1; i < hier->len; i++) {
 770                 g_string_sprintfa(s, "%s.",(gchar*)g_ptr_array_index(hier,i));
 771         }
 772
 773         g_string_append(s,name);
 774         str = s->str;
 775         g_string_free(s,FALSE);
 776
 777         return str;
 778 }
 779
 780
 781 static xml_ns_t* make_xml_hier(gchar* elem_name,
 782                                                                   xml_ns_t* root,
 783                                                                   GHashTable* elements,
 784                                                                   GPtrArray* hier,
 785                                                                   GString* error,
 786                                                                   GArray* hfs,
 787                                                                   GArray* etts,
 788                                                                   char* proto_name) {
 789         xml_ns_t* new;
 790         xml_ns_t* orig;
 791         gchar* fqn;
 792         gint* ett_p;
 793         struct _attr_reg_data d;
 794     gboolean recurred = FALSE;
 795     guint i;
 796
 797     if ( g_str_equal(elem_name,root->name) ) {
 798         return NULL;
 799     }
 800
 801         if (! ( orig = g_hash_table_lookup(elements,elem_name) )) {
 802                 g_string_sprintfa(error,"element '%s' is not defined\n", elem_name);
 803                 return NULL;
 804         }
 805
 806     for (i = 0; i < hier->len; i++) {
 807         if( strcmp(elem_name,(gchar*) g_ptr_array_index(hier,i) ) == 0 ) {
 808             recurred = TRUE;
 809         }
 810     }
 811
 812     if (recurred) {
 813         return NULL;
 814     }
 815
 816         fqn = fully_qualified_name(hier,elem_name,proto_name);
 817
 818         new = duplicate_element(orig);
 819         new->fqn = fqn;
 820
 821     add_xml_field(hfs, &(new->hf_tag), g_strdup(elem_name), fqn);
 822         add_xml_field(hfs, &(new->hf_cdata), g_strdup(elem_name), fqn);
 823
 824         ett_p = &new->ett;
 825         g_array_append_val(etts,ett_p);
 826
 827         d.basename = fqn;
 828         d.hf = hfs;
 829
 830         g_hash_table_foreach(new->attributes,add_xml_attribute_names,&d);
 831
 832         while(new->element_names->len) {
 833                 gchar* child_name = g_ptr_array_remove_index(new->element_names,0);
 834                 xml_ns_t* child_element = NULL;
 835
 836         g_ptr_array_add(hier,elem_name);
 837         child_element = make_xml_hier(child_name, root, elements, hier,error,hfs,etts,proto_name);
 838         g_ptr_array_remove_index_fast(hier,hier->len - 1);
 839
 840                 if (child_element) {
 841                         g_hash_table_insert(new->elements,child_element->name,child_element);
 842                 }
 843     }
 844
 845         g_ptr_array_free(new->element_names,TRUE);
 846         new->element_names = NULL;
 847         return new;
 848 }
 849
 850 static gboolean free_both(gpointer k, gpointer v, gpointer p _U_) {
 851     g_free(k);
 852     g_free(v);
 853     return TRUE;
 854 }
 855
 856 static gboolean free_elements(gpointer k _U_, gpointer v, gpointer p _U_) {
 857     xml_ns_t* e = v;
 858     g_free(e->name);
 859     g_hash_table_foreach_remove(e->attributes,free_both,NULL);
 860     g_hash_table_destroy(e->attributes);
 861     g_hash_table_destroy(e->elements);
 862
 863     while (e->element_names->len) {
 864         g_free(g_ptr_array_remove_index(e->element_names,0));
 865     }
 866
 867     g_ptr_array_free(e->element_names,TRUE);
 868     g_free(e);
 869
 870     return TRUE;
 871 }
 872
 873 static void register_dtd(dtd_build_data_t* dtd_data, GString* errors) {
 874         GHashTable* elements = g_hash_table_new(g_str_hash,g_str_equal);
 875         gchar* root_name = NULL;
 876         xml_ns_t* root_element = NULL;
 877         GArray* hfs;
 878         GArray* etts;
 879         GPtrArray* hier;
 880         gchar* curr_name;
 881     GPtrArray* element_names = g_ptr_array_new();
 882
 883     /* we first populate elements with the those coming from the parser */
 884         while(dtd_data->elements->len) {
 885                 dtd_named_list_t* nl = g_ptr_array_remove_index(dtd_data->elements,0);
 886                 xml_ns_t* element = g_malloc(sizeof(xml_ns_t));
 887
 888                 /* we will use the first element found as root in case no other one was given. */
 889                 if (root_name == NULL)
 890             root_name = g_strdup(nl->name);
 891
 892                 element->name = nl->name;
 893                 element->element_names = nl->list;
 894                 element->hf_tag = -1;
 895                 element->hf_cdata = -1;
 896                 element->ett = -1;
 897                 element->attributes = g_hash_table_new(g_str_hash,g_str_equal);
 898                 element->elements = g_hash_table_new(g_str_hash,g_str_equal);
 899
 900         if( g_hash_table_lookup(elements,element->name) ) {
 901             g_string_sprintfa(errors,"element %s defined more than once\n", element->name);
 902             free_elements(NULL,element,NULL);
 903         } else {
 904             g_hash_table_insert(elements,element->name,element);
 905             g_ptr_array_add(element_names,g_strdup(element->name));
 906                 }
 907
 908                 g_free(nl);
 909         }
 910
 911         /* then we add the attributes to its relative elements */
 912         while(dtd_data->attributes->len) {
 913                 dtd_named_list_t* nl = g_ptr_array_remove_index(dtd_data->attributes,0);
 914                 xml_ns_t* element = g_hash_table_lookup(elements,nl->name);
 915
 916                 if (!element) {
 917                         g_string_sprintfa(errors,"element %s is not defined\n", nl->name);
 918
 919             goto next_attribute;
 920                 }
 921
 922                 while(nl->list->len) {
 923                         gchar* name = g_ptr_array_remove_index(nl->list,0);
 924                         int* id_p = g_malloc(sizeof(int));
 925
 926                         *id_p = -1;
 927                         g_hash_table_insert(element->attributes,name,id_p);
 928                 }
 929
 930 next_attribute:
 931                 g_free(nl->name);
 932                 g_ptr_array_free(nl->list,TRUE);
 933                 g_free(nl);
 934         }
 935
 936     /* if a proto_root is defined in the dtd we'll use that as root */
 937         if( dtd_data->proto_root ) {
 938         if(root_name)
 939             g_free(root_name);
 940         root_name = g_strdup(dtd_data->proto_root);
 941         }
 942
 943     /* we use a stack with the names to avoid recurring infinitelly */
 944         hier = g_ptr_array_new();
 945
 946     /*
 947      * if a proto name was given in the dtd the dtd will be used as a protocol
 948      * or else the dtd will be loaded as a branch of the xml namespace
 949      */
 950         if( ! dtd_data->proto_name ) {
 951                 hfs = hf_arr;
 952                 etts = ett_arr;
 953                 g_ptr_array_add(hier,g_strdup("xml"));
 954                 root_element = &xml_ns;
 955         } else {
 956         /*
 957          * if we were given a proto_name the namespace will be registered
 958          * as an indipendent protocol with its own hf and ett arrays.
 959          */
 960             hfs = g_array_new(FALSE,FALSE,sizeof(hf_register_info));
 961             etts = g_array_new(FALSE,FALSE,sizeof(gint*));
 962         }
 963
 964     /* the root element of the dtd's namespace */
 965         root_element = g_malloc(sizeof(xml_ns_t));
 966     root_element->name = g_strdup(root_name);
 967     root_element->fqn = dtd_data->proto_name ? g_strdup(dtd_data->proto_name) : root_element->name;
 968     root_element->hf_tag = -1;
 969     root_element->hf_cdata = -1;
 970     root_element->ett = -1;
 971     root_element->elements = g_hash_table_new(g_str_hash,g_str_equal);
 972     root_element->element_names = element_names;
 973
 974     /*
 975      * we can either create a namespace as a flat namespace
 976      * in which all the elements are at the root level
 977      * or we can create a recursive namespace
 978      */
 979     if (dtd_data->recursion) {
 980         xml_ns_t* orig_root;
 981
 982         make_xml_hier(root_name, root_element, elements,hier,errors,hfs,etts,dtd_data->proto_name);
 983
 984         g_hash_table_insert(root_element->elements,root_element->name,root_element);
 985
 986         orig_root = g_hash_table_lookup(elements,root_name);
 987
 988         /* if the root element was defined copy its attrlist to the child */
 989         if(orig_root) {
 990             struct _attr_reg_data d;
 991
 992             d.basename = dtd_data->proto_name;
 993             d.hf = hfs;
 994
 995             root_element->attributes = copy_attributes_hash(orig_root->attributes);
 996             g_hash_table_foreach(root_element->attributes,add_xml_attribute_names,&d);
 997         } else {
 998             root_element->attributes = g_hash_table_new(g_str_hash,g_str_equal);
 999         }
1000
1001         /* we then create all the sub hierachies to catch the recurred cases */
1002         g_ptr_array_add(hier,root_name);
1003
1004         while(root_element->element_names->len) {
1005             curr_name = g_ptr_array_remove_index(root_element->element_names,0);
1006
1007             if( ! g_hash_table_lookup(root_element->elements,curr_name) ) {
1008                 xml_ns_t* new = make_xml_hier(curr_name, root_element, elements,hier,errors,hfs,etts,dtd_data->proto_name);
1009                 g_hash_table_insert(root_element->elements,new->name,new);
1010             }
1011
1012             g_free(curr_name);
1013         }
1014
1015     } else {
1016         /* a flat namespace */
1017         g_ptr_array_add(hier,root_name);
1018
1019         root_element->attributes = g_hash_table_new(g_str_hash,g_str_equal);
1020
1021         while(root_element->element_names->len) {
1022             xml_ns_t* new;
1023             gint* ett_p;
1024             struct _attr_reg_data d;
1025
1026             curr_name = g_ptr_array_remove_index(root_element->element_names,0);
1027             new = duplicate_element(g_hash_table_lookup(elements,curr_name));
1028             new->fqn = fully_qualified_name(hier, curr_name, root_name);
1029
1030             add_xml_field(hfs, &(new->hf_tag), curr_name, new->fqn);
1031             add_xml_field(hfs, &(new->hf_cdata), curr_name, new->fqn);
1032
1033             d.basename = new->fqn;
1034             d.hf = hfs;
1035
1036             g_hash_table_foreach(new->attributes,add_xml_attribute_names,&d);
1037
1038             ett_p = &new->ett;
1039             g_array_append_val(etts,ett_p);
1040
1041             g_ptr_array_free(new->element_names,TRUE);
1042
1043             g_hash_table_insert(root_element->elements,new->name,new);
1044         }
1045     }
1046
1047     g_ptr_array_free(element_names,TRUE);
1048
1049         g_ptr_array_free(hier,TRUE);
1050
1051     /*
1052      * if we were given a proto_name the namespace will be registered
1053      * as an indipendent protocol.
1054      */
1055         if( dtd_data->proto_name ) {
1056         gint* ett_p;
1057
1058                 if ( ! dtd_data->description) {
1059                         dtd_data->description = g_strdup(root_name);
1060                 }
1061
1062         ett_p = &root_element->ett;
1063         g_array_append_val(etts,ett_p);
1064
1065         add_xml_field(hfs, &root_element->hf_cdata, root_element->name, root_element->fqn);
1066
1067                 root_element->hf_tag = proto_register_protocol(dtd_data->description, dtd_data->proto_name, dtd_data->proto_name);
1068                 proto_register_field_array(root_element->hf_tag, (hf_register_info*)g_array_data(hfs), hfs->len);
1069                 proto_register_subtree_array((gint**)g_array_data(etts), etts->len);
1070
1071                 if (dtd_data->media_type) {
1072                         g_hash_table_insert(media_types,dtd_data->media_type,root_element);
1073                         dtd_data->media_type = NULL;
1074                 }
1075
1076                 dtd_data->description = NULL;
1077                 dtd_data->proto_name = NULL;
1078                 g_array_free(hfs,FALSE);
1079                 g_array_free(etts,TRUE);
1080         }
1081
1082     g_hash_table_insert(xml_ns.elements,root_element->name,root_element);
1083
1084     g_hash_table_foreach_remove(elements,free_elements,NULL);
1085     g_hash_table_destroy(elements);
1086
1087         destroy_dtd_data(dtd_data);
1088
1089     if (root_name)
1090         g_free(root_name);
1091 }
1092
1093 #if GLIB_MAJOR_VERSION < 2
1094 #  define DIRECTORY_T DIR
1095 #  define FILE_T struct dirent
1096 #  define OPENDIR_OP(name) opendir(name)
1097 #  define DIRGETNEXT_OP(dir) readdir(dir)
1098 #  define GETFNAME_OP(file) (gchar *)file->d_name
1099 #  define CLOSEDIR_OP(dir) closedir(dir)
1100 #else /* GLIB 2 */
1101 #  define DIRECTORY_T GDir
1102 #  define FILE_T gchar
1103 #  define OPENDIR_OP(name) g_dir_open(name, 0, dummy)
1104 #  define DIRGETNEXT_OP(dir) g_dir_read_name(dir)
1105 #  define GETFNAME_OP(file) (file);
1106 #  define CLOSEDIR_OP(dir) g_dir_close(dir)
1107 #endif
1108
1109 static void init_xml_names(void) {
1110         xml_ns_t* xmlpi_xml_ns;
1111         guint i;
1112         DIRECTORY_T* dir;
1113         const FILE_T* file;
1114         const gchar* filename;
1115         gchar* dirname;
1116
1117 #if GLIB_MAJOR_VERSION >= 2
1118         GError** dummy = g_malloc(sizeof(GError *));
1119         *dummy = NULL;
1120 #endif
1121
1122         xmpli_names = g_hash_table_new(g_str_hash,g_str_equal);
1123         media_types = g_hash_table_new(g_str_hash,g_str_equal);
1124
1125         unknown_ns.elements = xml_ns.elements = g_hash_table_new(g_str_hash,g_str_equal);
1126         unknown_ns.attributes = xml_ns.attributes = g_hash_table_new(g_str_hash,g_str_equal);
1127
1128         xmlpi_xml_ns = xml_new_namespace(xmpli_names,"xml","version","encoding","standalone",NULL);
1129
1130         g_hash_table_destroy(xmlpi_xml_ns->elements);
1131         xmlpi_xml_ns->elements = NULL;
1132
1133
1134         dirname = get_persconffile_path("dtds", FALSE);
1135
1136         if (test_for_directory(dirname) != EISDIR) {
1137                 /* Although dir isn't a directory it may still use memory */
1138                 g_free(dirname);
1139                 dirname = get_datafile_path("dtds");
1140         }
1141
1142         if (test_for_directory(dirname) == EISDIR) {
1143
1144             if ((dir = OPENDIR_OP(dirname)) != NULL) {
1145                 while ((file = DIRGETNEXT_OP(dir)) != NULL) {
1146                     guint namelen;
1147                     filename = GETFNAME_OP(file);
1148
1149                     namelen = strlen(filename);
1150                     if ( namelen > 4 && ( g_strcasecmp(filename+(namelen-4),".dtd")  == 0 ) ) {
1151                         GString* errors = g_string_new("");
1152                         GString* preparsed = dtd_preparse(dirname, filename, errors);
1153                         dtd_build_data_t* dtd_data;
1154
1155                         if (errors->len) {
1156                             report_failure("Dtd Preparser in file %s%c%s: %s",dirname,G_DIR_SEPARATOR,filename,errors->str);
1157                             continue;
1158                         }
1159
1160                         dtd_data = dtd_parse(preparsed);
1161
1162                         g_string_free(preparsed,TRUE);
1163
1164                         if (dtd_data->error->len) {
1165                             report_failure("Dtd Parser in file %s%c%s: %s",dirname,G_DIR_SEPARATOR,filename,dtd_data->error->str);
1166                             destroy_dtd_data(dtd_data);
1167                             continue;
1168                         }
1169
1170                         register_dtd(dtd_data,errors);
1171
1172                         if (errors->len) {
1173                             report_failure("Dtd Registration in file: %s%c%s: %s",dirname,G_DIR_SEPARATOR,filename,errors->str);
1174                             g_string_free(errors,TRUE);
1175                             continue;
1176                         }
1177                     }
1178                 }
1179
1180                 CLOSEDIR_OP(dir);
1181             }
1182         }
1183
1184         for(i=0;i<array_length(default_media_types);i++) {
1185                 if( ! g_hash_table_lookup(media_types,default_media_types[i]) ) {
1186                         g_hash_table_insert(media_types,(gpointer)default_media_types[i],&xml_ns);
1187                 }
1188         }
1189
1190         g_hash_table_foreach(xmpli_names,add_xmlpi_namespace,"xml.xmlpi");
1191
1192 #if GLIB_MAJOR_VERSION >= 2
1193         g_free(dummy);
1194 #endif
1195 }
1196
1197 static void range_delete_xml_tcp_callback(guint32 port) {
1198         dissector_delete("tcp.port", port, xml_handle);
1199 }
1200
1201 static void range_add_xml_tcp_callback(guint32 port) {
1202         dissector_add("tcp.port", port, xml_handle);
1203 }
1204
1205 static void apply_prefs(void) {
1206         if (pref_heuristic_media_save != pref_heuristic_media) {
1207                 if (pref_heuristic_media) {
1208                         heur_dissector_add("http", dissect_xml_heur, xml_ns.hf_tag);
1209                         heur_dissector_add("sip", dissect_xml_heur, xml_ns.hf_tag);
1210                         heur_dissector_add("media", dissect_xml_heur, xml_ns.hf_tag);
1211                         pref_heuristic_media_save = TRUE;
1212                 } else {
1213                         heur_dissector_delete("http", dissect_xml_heur, xml_ns.hf_tag);
1214                         heur_dissector_delete("sip", dissect_xml_heur, xml_ns.hf_tag);
1215                         heur_dissector_delete("media", dissect_xml_heur, xml_ns.hf_tag);
1216                         pref_heuristic_media_save = FALSE;
1217                 }
1218         }
1219
1220     if (pref_heuristic_tcp_save != pref_heuristic_tcp ) {
1221                 if (pref_heuristic_tcp) {
1222                         heur_dissector_add("tcp", dissect_xml_heur, xml_ns.hf_tag);
1223                         pref_heuristic_tcp_save = TRUE;
1224                 } else {
1225                         heur_dissector_delete("tcp", dissect_xml_heur, xml_ns.hf_tag);
1226                         pref_heuristic_tcp_save = FALSE;
1227                 }
1228         }
1229
1230         range_foreach(xml_tcp_range, range_delete_xml_tcp_callback);
1231         g_free(xml_tcp_range);
1232         xml_tcp_range = range_copy(global_xml_tcp_range);
1233         range_foreach(xml_tcp_range, range_add_xml_tcp_callback);
1234 }
1235
1236 void
1237 proto_register_xml(void) {
1238         static gint *ett_base[] = {
1239                 &unknown_ns.ett,
1240                 &xml_ns.ett,
1241                 &ett_dtd,
1242                 &ett_xmpli
1243         };
1244
1245         static hf_register_info hf_base[] = {
1246                 { &hf_xmlpi, {"XMLPI", "xml.xmlpi", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1247                 { &hf_comment, {"Comment", "xml.comment", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1248                 { &hf_unknowwn_attrib, {"Attribute", "xml.attribute", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1249                 { &hf_doctype, {"Doctype", "xml.doctype", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1250                 { &hf_dtd_tag, {"DTD Tag", "xml.dtdtag", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1251                 { &unknown_ns.hf_cdata, {"CDATA", "xml.cdata", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1252                 { &unknown_ns.hf_tag, {"Tag", "xml.tag", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
1253                 { &xml_ns.hf_cdata, {"Unknown", "xml.unknown", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }}
1254     };
1255         module_t* xml_module;
1256
1257         hf_arr = g_array_new(FALSE,FALSE,sizeof(hf_register_info));
1258         ett_arr = g_array_new(FALSE,FALSE,sizeof(gint*));
1259
1260         g_array_append_vals(hf_arr,hf_base,array_length(hf_base));
1261         g_array_append_vals(ett_arr,ett_base,array_length(ett_base));
1262
1263         init_xml_names();
1264
1265         xml_ns.hf_tag = proto_register_protocol("eXtensible Markup Language", "XML", xml_ns.name);
1266
1267         proto_register_field_array(xml_ns.hf_tag, (hf_register_info*)g_array_data(hf_arr), hf_arr->len);
1268         proto_register_subtree_array((gint**)g_array_data(ett_arr), ett_arr->len);
1269
1270         xml_module = prefs_register_protocol(xml_ns.hf_tag,apply_prefs);
1271     prefs_register_bool_preference(xml_module, "heuristic", "Use Heuristics for media types",
1272                                    "Try to recognize XML for unknown media types",
1273                                    &pref_heuristic_media);
1274     prefs_register_bool_preference(xml_module, "heuristic_tcp", "Use Heuristics for tcp",
1275                                    "Try to recognize XML for unknown TCP ports",
1276                                    &pref_heuristic_tcp);
1277         prefs_register_range_preference(xml_module, "tcp.port", "TCP Ports",
1278                                                                         "TCP Ports range",
1279                                                                         &global_xml_tcp_range, 65535);
1280
1281     g_array_free(hf_arr,FALSE);
1282     g_array_free(ett_arr,TRUE);
1283
1284         register_dissector("xml", dissect_xml, xml_ns.hf_tag);
1285
1286         init_xml_parser();
1287
1288         xml_tcp_range = range_empty();
1289
1290
1291 }
1292
1293 static void add_dissector_media(gpointer k, gpointer v _U_, gpointer p _U_) {
1294         dissector_add_string("media_type", (gchar*)k, xml_handle);
1295 }
1296
1297 void
1298 proto_reg_handoff_xml(void)
1299 {
1300
1301         xml_handle = find_dissector("xml");
1302
1303         g_hash_table_foreach(media_types,add_dissector_media,NULL);
1304
1305 }