--- /dev/null
+/* packet-xml.c
+ * ethereal's xml dissector .
+ *
+ * (C) 2005, Luis E. Garcia Ontanon.
+ *
+ * Refer to the AUTHORS file or the AUTHORS section in the man page
+ * for contacting the author(s) of this file.
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include <glib.h>
+#include <epan/emem.h>
+#include <epan/packet.h>
+#include <epan/strutil.h>
+#include <epan/tvbparse.h>
+
+typedef struct {
+ proto_tree* tree;
+ proto_item* item;
+ proto_item* last_item;
+ int start_offset;
+} xml_frame_t;
+
+static int proto_xml = -1;
+
+static gint ett_i = -1;
+static gint ett_tag = -1;
+static gint ett_dtd = -1;
+
+static int hf_what = -1;
+static int hf_attrib = -1;
+static int hf_cdata = -1;
+static int hf_comment = -1;
+static int hf_xmlpi = -1;
+static int hf_tag = -1;
+static int hf_dtd_tag = -1;
+static int hf_doctype = -1;
+static int hf_entity = -1;
+
+/* Dissector handles */
+static dissector_handle_t xml_handle;
+
+/* tokenizer defs */
+static tvbparse_wanted_t* want;
+static tvbparse_wanted_t* want_ignore;
+
+
+
+
+static void
+dissect_xml(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
+{
+ tvbparse_t* tt;
+ tvbparse_elem_t* tok = NULL;
+ static GPtrArray* stack = NULL;
+ xml_frame_t* current_frame;
+
+ if(!tree) return;
+
+ if (stack != NULL)
+ g_ptr_array_free(stack,FALSE);
+
+ stack = g_ptr_array_new();
+ current_frame = ep_alloc(sizeof(xml_frame_t));
+ g_ptr_array_add(stack,current_frame);
+
+ tt = tvbparse_init(tvb,0,-1,stack,want_ignore);
+
+ current_frame->item = proto_tree_add_item(tree,proto_xml,tvb,0,-1,FALSE);
+ current_frame->tree = proto_item_add_subtree(current_frame->item,ett_i);
+ current_frame->last_item = current_frame->item;
+ current_frame->start_offset = 0;
+
+ while(( tok = tvbparse_get(tt, want) )) ;
+}
+
+
+static void after_token(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+ int hfid;
+ proto_item* pi;
+
+ if (tok->id > 0)
+ hfid = tok->id;
+ else
+ hfid = hf_what;
+
+ pi = proto_tree_add_item(current_frame->tree, hfid, tok->tvb, tok->offset, tok->len, FALSE);
+
+ proto_item_set_text(pi, "%s",
+ tvb_get_ephemeral_string(tok->tvb,tok->offset,tok->len));
+}
+
+static void before_xmpli(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+ proto_item* pi;
+ proto_tree* pt;
+ tvbparse_elem_t* name_tok = tok->sub->next;
+
+ pi = proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,-1,
+ "<? %s",
+ tvb_get_ephemeral_string(name_tok->tvb,name_tok->offset,name_tok->len));
+ pt = proto_item_add_subtree(pi,ett_tag);
+
+ current_frame = ep_alloc(sizeof(xml_frame_t));
+ current_frame->item = pi;
+ current_frame->last_item = pi;
+ current_frame->tree = pt;
+ current_frame->start_offset = tok->offset;
+
+ g_ptr_array_add(stack,current_frame);
+
+}
+
+static void after_xmlpi(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
+ proto_item_append_text(current_frame->last_item," ?>");
+
+ if (stack->len > 1) {
+ g_ptr_array_remove_index_fast(stack,stack->len - 1);
+ } else {
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened tag ]");
+ }
+}
+
+static void before_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+ proto_item* pi;
+ proto_tree* pt;
+ tvbparse_elem_t* name_tok = tok->sub->next;
+ gchar* name = tvb_get_ephemeral_string(name_tok->tvb,name_tok->offset,name_tok->len);
+
+ pi = proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,-1,"<%s",name);
+ pt = proto_item_add_subtree(pi,ett_tag);
+
+ current_frame = ep_alloc(sizeof(xml_frame_t));
+ current_frame->item = pi;
+ current_frame->last_item = pi;
+ current_frame->tree = pt;
+ current_frame->start_offset = tok->offset;
+
+ g_ptr_array_add(stack,current_frame);
+
+}
+
+static void after_open_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
+ proto_item_append_text(current_frame->last_item,">");
+}
+
+static void after_closed_tag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
+ proto_item_append_text(current_frame->last_item,"/>");
+
+ if (stack->len > 1) {
+ g_ptr_array_remove_index_fast(stack,stack->len - 1);
+ } else {
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened tag ]");
+ }
+}
+
+void after_untag(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
+
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"%s",
+ tvb_get_ephemeral_string(tok->tvb,tok->offset,tok->len));
+
+ if (stack->len > 1) {
+ g_ptr_array_remove_index_fast(stack,stack->len - 1);
+ } else {
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,
+ "[ ERROR: Closing an unopened tag ]");
+ }
+}
+
+static void before_dtd_doctype(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+ tvbparse_elem_t* name_tok = tok->sub->next->next->next->sub->sub;
+ proto_tree* dtd_item = proto_tree_add_item(current_frame->tree, hf_doctype,
+ name_tok->tvb, name_tok->offset, name_tok->len, FALSE);
+
+ proto_item_set_text(dtd_item,"%s",tvb_get_ephemeral_string(tok->tvb,tok->offset,tok->len));
+
+ current_frame = ep_alloc(sizeof(xml_frame_t));
+ current_frame->item = dtd_item;
+ current_frame->last_item = dtd_item;
+ current_frame->tree = proto_item_add_subtree(dtd_item,ett_dtd);
+ current_frame->start_offset = tok->offset;
+
+ g_ptr_array_add(stack,current_frame);
+}
+
+static void pop_stack(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok _U_) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ if (stack->len > 1) {
+ g_ptr_array_remove_index_fast(stack,stack->len - 1);
+ } else {
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,
+ "[ ERROR: Closing an unopened tag ]");
+ }
+}
+
+static void after_dtd_close(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok){
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"%s",
+ tvb_get_ephemeral_string(tok->tvb,tok->offset,tok->len));
+ if (stack->len > 1) {
+ g_ptr_array_remove_index_fast(stack,stack->len - 1);
+ } else {
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Closing an unopened tag ]");
+ }
+}
+
+static void get_attrib_value(void* tvbparse_data _U_, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ tok->data = tok->sub;
+}
+
+static void after_attrib(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok) {
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+ gchar* name = tvb_get_ephemeral_string(tok->sub->tvb,tok->sub->offset,tok->sub->len);
+ tvbparse_elem_t* value = tok->sub->next->next->data;
+
+ name = name;
+
+ current_frame->last_item = proto_tree_add_item(current_frame->tree,hf_attrib,value->tvb,value->offset,value->len,FALSE);
+ proto_item_set_text(current_frame->last_item, "%s", tvb_get_ephemeral_string(tok->tvb,tok->offset,tok->len));
+
+}
+
+static void unrecognized_token(void* tvbparse_data, const void* wanted_data _U_, tvbparse_elem_t* tok _U_){
+ GPtrArray* stack = tvbparse_data;
+ xml_frame_t* current_frame = g_ptr_array_index(stack,stack->len - 1);
+
+ proto_tree_add_text(current_frame->tree,tok->tvb,tok->offset,tok->len,"[ ERROR: Unrecognized text ]");
+
+}
+
+
+
+void init_xml_parser(void) {
+ tvbparse_wanted_t* want_name = tvbparse_chars(-1,0,0,"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-",NULL,NULL,NULL);
+
+ tvbparse_wanted_t* want_attributes = tvbparse_one_or_more(-1, NULL, NULL, NULL,
+ tvbparse_set_seq(hf_attrib, NULL, NULL, after_attrib,
+ want_name,
+ tvbparse_char(-1,"=",NULL,NULL,NULL),
+ tvbparse_set_oneof(0, NULL, NULL, get_attrib_value,
+ tvbparse_quoted(-1, NULL, NULL, tvbparse_shrink_token_cb,'\"','\\'),
+ tvbparse_quoted(-1, NULL, NULL, tvbparse_shrink_token_cb,'\'','\\'),
+ tvbparse_chars(-1,0,0,"0123456789",NULL,NULL,NULL),
+ want_name,
+ NULL),
+ NULL));
+
+ tvbparse_wanted_t* want_stoptag = tvbparse_set_oneof(-1,NULL,NULL,NULL,
+ tvbparse_char(-1, ">", NULL, NULL, after_open_tag),
+ tvbparse_string(-1, "/>", NULL, NULL, after_closed_tag),
+ NULL);
+
+ tvbparse_wanted_t* want_stopxmlpi = tvbparse_string(-1,"?>",NULL,NULL,NULL);
+
+ want_ignore = tvbparse_chars(-1,0,0," \t\r\n",NULL,NULL,NULL);
+
+ want = tvbparse_set_oneof(-1, NULL, NULL, NULL,
+ tvbparse_set_seq(hf_comment,NULL,NULL,after_token,
+ tvbparse_string(-1,"<!--",NULL,NULL,NULL),
+ tvbparse_until(-1,NULL,NULL,NULL,
+ tvbparse_string(-1,"-->",NULL,NULL,NULL),
+ TRUE),
+ NULL),
+ tvbparse_set_seq(hf_xmlpi,NULL,before_xmpli,after_xmlpi,
+ tvbparse_string(-1,"<?",NULL,NULL,NULL),
+ want_name,
+ tvbparse_set_oneof(-1,NULL,NULL,NULL,
+ want_stopxmlpi,
+ tvbparse_set_seq(-1,NULL,NULL,NULL,
+ want_attributes,
+ want_stopxmlpi,
+ NULL),
+ NULL),
+ NULL),
+ tvbparse_set_seq(0,NULL,NULL,after_untag,
+ tvbparse_char(-1, "<", NULL, NULL, NULL),
+ tvbparse_char(-1, "/", NULL, NULL, NULL),
+ want_name,
+ tvbparse_char(-1, ">", NULL, NULL, NULL),
+ NULL),
+ tvbparse_set_seq(-1,NULL,before_dtd_doctype,NULL,
+ tvbparse_char(-1,"<",NULL,NULL,NULL),
+ tvbparse_char(-1,"!",NULL,NULL,NULL),
+ tvbparse_casestring(-1,"DOCTYPE",NULL,NULL,NULL),
+ tvbparse_set_oneof(-1,NULL,NULL,NULL,
+ tvbparse_set_seq(-1,NULL,NULL,NULL,
+ want_name,
+ tvbparse_char(-1,"[",NULL,NULL,NULL),
+ NULL),
+ tvbparse_set_seq(-1,NULL,NULL,pop_stack,
+ want_name,
+ tvbparse_set_oneof(-1,NULL,NULL,NULL,
+ tvbparse_casestring(-1,"PUBLIC",NULL,NULL,NULL),
+ tvbparse_casestring(-1,"SYSTEM",NULL,NULL,NULL),
+ NULL),
+ tvbparse_until(-1,NULL,NULL,NULL,
+ tvbparse_char(-1,">",NULL,NULL,NULL),
+ TRUE),
+ NULL),
+ NULL),
+ NULL),
+ tvbparse_set_seq(-1,NULL,NULL,after_dtd_close,
+ tvbparse_char(-1,"]",NULL,NULL,NULL),
+ tvbparse_char(-1,">",NULL,NULL,NULL),
+ NULL),
+ tvbparse_set_seq(hf_dtd_tag,NULL,NULL,after_token,
+ tvbparse_char(-1,"<",NULL,NULL,NULL),
+ tvbparse_char(-1,"!",NULL,NULL,NULL),
+ tvbparse_until(-1,NULL,NULL,NULL,
+ tvbparse_char(-1, ">", NULL, NULL, NULL),
+ TRUE),
+ NULL),
+ tvbparse_set_seq(-1, NULL, before_tag, NULL,
+ tvbparse_char(-1,"<",NULL,NULL,NULL),
+ want_name,
+ tvbparse_set_oneof(-1,NULL,NULL,NULL,
+ tvbparse_set_seq(-1,NULL,NULL,NULL,
+ want_attributes,
+ want_stoptag,
+ NULL),
+ want_stoptag,
+ NULL),
+ NULL),
+ tvbparse_set_seq(hf_entity,NULL,NULL,after_token,
+ tvbparse_char(4,"&",NULL,NULL,NULL),
+ want_name,
+ tvbparse_char(4,";",NULL,NULL,NULL),
+ NULL),
+ tvbparse_not_chars(hf_cdata,0,0,"<",NULL,NULL,after_token),
+ tvbparse_not_chars(-1,0,0," \t\r\n",NULL,NULL,unrecognized_token),
+ NULL);
+
+
+}
+
+
+void
+proto_register_xml(void) {
+
+ static gint *ett[] = {
+ &ett_i,
+ &ett_tag,
+ &ett_dtd,
+ };
+
+ static hf_register_info hf[] = {
+ { &hf_cdata, {"CDATA", "xml.cdata", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_xmlpi, {"XMLPI", "xml.xmlpi", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_entity, {"Entity", "xml.entity", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_attrib, {"Attribute", "xml.attribute", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_comment, {"Comment", "xml.comment", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_tag, {"Tag", "xml.tag", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_doctype, {"Doctype", "xml.doctype", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_dtd_tag, {"DTD Tag", "xml.dtdtag", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
+ { &hf_what, {"Unknown", "xml.unknown", FT_STRING, BASE_NONE, NULL, 0, "", HFILL }}
+ };
+
+ proto_xml = proto_register_protocol("eXtensible Markup Language",
+ "XML",
+ "xml");
+
+ proto_register_field_array(proto_xml, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+
+ register_dissector("xml", dissect_xml, proto_xml);
+
+ init_xml_parser();
+}
+
+void
+proto_reg_handoff_xml(void)
+{
+
+ xml_handle = find_dissector("xml");
+
+ dissector_add_string("media_type", "text/xml", xml_handle);
+ dissector_add_string("media_type", "application/xml", xml_handle);
+ dissector_add_string("media_type", "application/soap+xml", xml_handle);
+ dissector_add_string("media_type", "application/xml-dtd", xml_handle);
+ /* WAP and OMA XML media */
+ dissector_add_string("media_type", "text/vnd.wap.wml", xml_handle);
+ dissector_add_string("media_type", "text/vnd.wap.si", xml_handle);
+ dissector_add_string("media_type", "text/vnd.wap.sl", xml_handle);
+ dissector_add_string("media_type", "text/vnd.wap.co", xml_handle);
+ dissector_add_string("media_type", "text/vnd.wap.emn", xml_handle);
+ dissector_add_string("media_type", "application/vnd.wv.csp+xml", xml_handle);
+ /* The Extensible Markup Language (XML) Configuration Access Protocol (XCAP)
+ * draft-ietf-simple-xcap-06
+ */
+ dissector_add_string("media_type", "application/xcap-el+xml", xml_handle);
+ dissector_add_string("media_type", "application/xcap-att+xml", xml_handle);
+ dissector_add_string("media_type", "application/xcap-error+xml", xml_handle);
+ dissector_add_string("media_type", "application/xcap-caps+xml", xml_handle);
+ /* draft-ietf-simple-presence-rules-02 */
+ dissector_add_string("media_type", "application/auth-policy+xml", xml_handle);
+ /* Other */
+ dissector_add_string("media_type", "application/smil", xml_handle);
+ dissector_add_string("media_type", "application/cpim-pidf+xml", xml_handle);
+ dissector_add_string("media_type", "application/rdf+xml", xml_handle);
+ dissector_add_string("media_type", "application/xslt+xml", xml_handle);
+ dissector_add_string("media_type", "application/mathml+xml", xml_handle);
+ dissector_add_string("media_type", "image/svg+xml", xml_handle);
+ dissector_add_string("media_type", "application/vnd.wv.csp.xml", xml_handle);
+
+}
git.samba.org / obnox / wireshark / wip.git / commitdiff