forked from osmocom/wireshark
![AndersBroman](/assets/img/avatar_default.png)
Change-Id: I766ece91273603d6dd53a05771631dfc10b17566 Reviewed-on: https://code.wireshark.org/review/26133 Reviewed-by: Anders Broman <a.broman58@gmail.com>
1527 lines
55 KiB
C
1527 lines
55 KiB
C
/* packet-xml.c
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* wireshark's xml dissector .
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*
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* (C) 2005, Luis E. Garcia Ontanon.
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*
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* Refer to the AUTHORS file or the AUTHORS section in the man page
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* for contacting the author(s) of this file.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <string.h>
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#include <errno.h>
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#include <epan/packet.h>
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#include <epan/tvbparse.h>
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#include <epan/dtd.h>
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#include <epan/proto_data.h>
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#include <wsutil/filesystem.h>
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#include <epan/prefs.h>
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#include <epan/expert.h>
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#include <epan/garrayfix.h>
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#include <wsutil/str_util.h>
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#include <wsutil/report_message.h>
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#include "packet-xml.h"
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void proto_register_xml(void);
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void proto_reg_handoff_xml(void);
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struct _attr_reg_data {
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wmem_array_t *hf;
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const gchar *basename;
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};
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static gint ett_dtd = -1;
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static gint ett_xmpli = -1;
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static int hf_unknowwn_attrib = -1;
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static int hf_comment = -1;
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static int hf_xmlpi = -1;
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static int hf_dtd_tag = -1;
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static int hf_doctype = -1;
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static int hf_cdatasection = -1;
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static expert_field ei_xml_closing_unopened_tag = EI_INIT;
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static expert_field ei_xml_closing_unopened_xmpli_tag = EI_INIT;
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static expert_field ei_xml_unrecognized_text = EI_INIT;
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/* dissector handles */
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static dissector_handle_t xml_handle;
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/* parser definitions */
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static tvbparse_wanted_t *want;
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static tvbparse_wanted_t *want_ignore;
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static tvbparse_wanted_t *want_heur;
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static wmem_map_t *xmpli_names;
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static wmem_map_t *media_types;
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static xml_ns_t xml_ns = {"xml", "/", -1, -1, -1, NULL, NULL, NULL};
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static xml_ns_t unknown_ns = {"unknown", "?", -1, -1, -1, NULL, NULL, NULL};
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static xml_ns_t *root_ns;
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static gboolean pref_heuristic_unicode = FALSE;
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#define XML_CDATA -1000
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#define XML_SCOPED_NAME -1001
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static wmem_array_t *hf_arr;
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static GArray *ett_arr;
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static const gchar *default_media_types[] = {
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"text/xml",
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"text/vnd.wap.wml",
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"text/vnd.wap.si",
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"text/vnd.wap.sl",
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"text/vnd.wap.co",
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"text/vnd.wap.emn",
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"application/3gpp-ims+xml",
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"application/atom+xml",
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"application/auth-policy+xml",
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"application/ccmp+xml",
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"application/conference-info+xml", /*RFC4575*/
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"application/cpim-pidf+xml",
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"application/cpl+xml",
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"application/dds-web+xml",
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"application/im-iscomposing+xml", /*RFC3994*/
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"application/load-control+xml", /*RFC7200*/
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"application/mathml+xml",
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"application/media_control+xml",
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"application/note+xml",
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"application/pidf+xml",
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"application/pidf-diff+xml",
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"application/poc-settings+xml",
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"application/rdf+xml",
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"application/reginfo+xml",
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"application/resource-lists+xml",
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"application/rlmi+xml",
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"application/rls-services+xml",
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"application/rss+xml",
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"application/rs-metadata+xml",
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"application/smil",
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"application/simple-filter+xml",
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"application/simple-message-summary+xml", /*RFC3842*/
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"application/simservs+xml",
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"application/soap+xml",
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"application/vnd.etsi.aoc+xml",
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"application/vnd.etsi.cug+xml",
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"application/vnd.etsi.iptvcommand+xml",
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"application/vnd.etsi.iptvdiscovery+xml",
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"application/vnd.etsi.iptvprofile+xml",
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"application/vnd.etsi.iptvsad-bc+xml",
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"application/vnd.etsi.iptvsad-cod+xml",
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"application/vnd.etsi.iptvsad-npvr+xml",
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"application/vnd.etsi.iptvservice+xml",
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"application/vnd.etsi.iptvsync+xml",
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"application/vnd.etsi.iptvueprofile+xml",
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"application/vnd.etsi.mcid+xml",
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"application/vnd.etsi.overload-control-policy-dataset+xml",
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"application/vnd.etsi.pstn+xml",
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"application/vnd.etsi.sci+xml",
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"application/vnd.etsi.simservs+xml",
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"application/vnd.etsi.tsl+xml",
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"application/vnd.oma.xdm-apd+xml",
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"application/vnd.oma.fnl+xml",
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"application/vnd.oma.access-permissions-list+xml",
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"application/vnd.oma.alias-principals-list+xml",
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"application/upp-directory+xml", /*OMA-ERELD-XDM-V2_2_1-20170124-A*/
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"application/vnd.oma.xdm-hi+xml",
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"application/vnd.oma.xdm-rhi+xml",
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"application/vnd.oma.xdm-prefs+xml",
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"application/vnd.oma.xdcp+xml",
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"application/vnd.oma.bcast.associated-procedure-parameter+xml",
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"application/vnd.oma.bcast.drm-trigger+xml",
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"application/vnd.oma.bcast.imd+xml",
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"application/vnd.oma.bcast.notification+xml",
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"application/vnd.oma.bcast.sgdd+xml",
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"application/vnd.oma.bcast.smartcard-trigger+xml",
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"application/vnd.oma.bcast.sprov+xml",
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"application/vnd.oma.cab-address-book+xml",
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"application/vnd.oma.cab-feature-handler+xml",
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"application/vnd.oma.cab-pcc+xml",
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"application/vnd.oma.cab-subs-invite+xml",
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"application/vnd.oma.cab-user-prefs+xml",
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"application/vnd.oma.dd2+xml",
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"application/vnd.oma.drm.risd+xml",
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"application/vnd.oma.group-usage-list+xml",
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"application/vnd.oma.pal+xml",
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"application/vnd.oma.poc.detailed-progress-report+xml",
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"application/vnd.oma.poc.final-report+xml",
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"application/vnd.oma.poc.groups+xml",
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"application/vnd.oma.poc.invocation-descriptor+xml",
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"application/vnd.oma.poc.optimized-progress-report+xml",
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"application/vnd.oma.scidm.messages+xml",
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"application/vnd.oma.suppnot+xml", /*OMA-ERELD-Presence_SIMPLE-V2_0-20120710-A*/
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"application/vnd.oma.xcap-directory+xml",
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"application/vnd.omads-email+xml",
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"application/vnd.omads-file+xml",
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"application/vnd.omads-folder+xml",
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"application/vnd.3gpp.access-transfer-events+xml",
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"application/vnd.3gpp.bsf+xml",
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"application/vnd.3gpp.comm-div-info+xml", /*3GPP TS 24.504 version 8.19.0*/
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"application/vnd.3gpp.cw+xml",
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"application/vnd.3gpp.iut+xml", /*3GPP TS 24.337*/
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"application/vnc.3gpp.iut-config+xml", /*3GPP TS 24.337*/
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"application/vnd.3gpp.mid-call+xml",
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"application/vnd.3gpp-prose-pc3ch+xml",
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"application/vnd.3gpp-prose+xml",
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"application/vnd.3gpp.replication+xml", /*3GPP TS 24.337*/
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"application/vnd.3gpp.sms+xml",
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"application/vnd.3gpp.srvcc-info+xml",
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"application/vnd.3gpp.srvcc-ext+xml",
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"application/vnd.3gpp.state-and-event-info+xml",
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"application/vnd.3gpp.ussd+xml",
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"application/vnd.3gpp2.bcmcsinfo+xml",
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"application/vnd.wv.csp+xml",
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"application/vnd.wv.csp.xml",
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"application/watcherinfo+xml",
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"application/xcap-att+xml",
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"application/xcap-caps+xml",
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"application/xcap-diff+xml",
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"application/xcap-el+xml",
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"application/xcap-error+xml",
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"application/xcap-ns+xml",
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"application/xml",
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"application/xml-dtd",
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"application/xpidf+xml",
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"application/xslt+xml",
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"application/x-crd+xml",
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"application/x-wms-logconnectstats",
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"application/x-wms-logplaystats",
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"application/x-wms-sendevent",
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"image/svg+xml",
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"message/imdn+xml", /*RFC5438*/
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};
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static void insert_xml_frame(xml_frame_t *parent, xml_frame_t *new_child)
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{
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new_child->first_child = NULL;
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new_child->last_child = NULL;
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new_child->parent = parent;
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new_child->next_sibling = NULL;
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new_child->prev_sibling = NULL;
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if (parent == NULL) return; /* root */
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if (parent->first_child == NULL) { /* the 1st child */
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parent->first_child = new_child;
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} else { /* following children */
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parent->last_child->next_sibling = new_child;
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new_child->prev_sibling = parent->last_child;
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}
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parent->last_child = new_child;
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}
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static int
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dissect_xml(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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tvbparse_t *tt;
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static GPtrArray *stack;
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xml_frame_t *current_frame;
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const char *colinfo_str;
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if (stack != NULL)
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g_ptr_array_free(stack, TRUE);
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stack = g_ptr_array_new();
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current_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
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current_frame->type = XML_FRAME_ROOT;
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current_frame->name = NULL;
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current_frame->name_orig_case = NULL;
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current_frame->value = NULL;
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current_frame->pinfo = pinfo;
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insert_xml_frame(NULL, current_frame);
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g_ptr_array_add(stack, current_frame);
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tt = tvbparse_init(tvb, 0, -1, stack, want_ignore);
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current_frame->start_offset = 0;
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current_frame->length = tvb_captured_length(tvb);
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root_ns = NULL;
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if (pinfo->match_string)
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root_ns = (xml_ns_t *)wmem_map_lookup(media_types, pinfo->match_string);
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if (! root_ns ) {
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root_ns = &xml_ns;
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colinfo_str = "/XML";
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} else {
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char *colinfo_str_buf;
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colinfo_str_buf = wmem_strconcat(wmem_packet_scope(), "/", root_ns->name, NULL);
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ascii_strup_inplace(colinfo_str_buf);
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colinfo_str = colinfo_str_buf;
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}
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col_append_str(pinfo->cinfo, COL_PROTOCOL, colinfo_str);
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current_frame->ns = root_ns;
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current_frame->item = proto_tree_add_item(tree, current_frame->ns->hf_tag, tvb, 0, -1, ENC_UTF_8|ENC_NA);
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current_frame->tree = proto_item_add_subtree(current_frame->item, current_frame->ns->ett);
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current_frame->last_item = current_frame->item;
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while(tvbparse_get(tt, want)) ;
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/* Save XML structure in case it is useful for the caller (only XMPP for now) */
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p_add_proto_data(pinfo->pool, pinfo, xml_ns.hf_tag, 0, current_frame);
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return tvb_captured_length(tvb);
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}
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static gboolean dissect_xml_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
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{
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if (tvbparse_peek(tvbparse_init(tvb, 0, -1, NULL, want_ignore), want_heur)) {
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dissect_xml(tvb, pinfo, tree, data);
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return TRUE;
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} else if (pref_heuristic_unicode) {
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/* XXX - UCS-2, or UTF-16? */
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const guint8 *data_str = tvb_get_string_enc(pinfo->pool, tvb, 0, tvb_captured_length(tvb), ENC_UCS_2|ENC_LITTLE_ENDIAN);
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tvbuff_t *unicode_tvb = tvb_new_child_real_data(tvb, data_str, tvb_captured_length(tvb)/2, tvb_captured_length(tvb)/2);
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if (tvbparse_peek(tvbparse_init(unicode_tvb, 0, -1, NULL, want_ignore), want_heur)) {
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add_new_data_source(pinfo, unicode_tvb, "UTF8");
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dissect_xml(unicode_tvb, pinfo, tree, data);
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return TRUE;
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}
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}
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return FALSE;
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}
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xml_frame_t *xml_get_tag(xml_frame_t *frame, const gchar *name)
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{
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xml_frame_t *tag = NULL;
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xml_frame_t *xml_item = frame->first_child;
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while (xml_item) {
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if (xml_item->type == XML_FRAME_TAG) {
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if (!name) { /* get the 1st tag */
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tag = xml_item;
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break;
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} else if (xml_item->name_orig_case && !strcmp(xml_item->name_orig_case, name)) {
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tag = xml_item;
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break;
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}
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}
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xml_item = xml_item->next_sibling;
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}
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return tag;
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}
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xml_frame_t *xml_get_attrib(xml_frame_t *frame, const gchar *name)
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{
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xml_frame_t *attr = NULL;
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xml_frame_t *xml_item = frame->first_child;
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while (xml_item) {
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if ((xml_item->type == XML_FRAME_ATTRIB) &&
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xml_item->name_orig_case && !strcmp(xml_item->name_orig_case, name)) {
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attr = xml_item;
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break;
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}
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xml_item = xml_item->next_sibling;
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}
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return attr;
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}
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xml_frame_t *xml_get_cdata(xml_frame_t *frame)
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{
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xml_frame_t *cdata = NULL;
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xml_frame_t *xml_item = frame->first_child;
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while (xml_item) {
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if (xml_item->type == XML_FRAME_CDATA) {
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cdata = xml_item;
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break;
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}
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xml_item = xml_item->next_sibling;
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}
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return cdata;
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}
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static void after_token(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
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{
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GPtrArray *stack = (GPtrArray *)tvbparse_data;
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xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
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int hfid;
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gboolean is_cdata = FALSE;
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proto_item *pi;
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xml_frame_t *new_frame;
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if (tok->id == XML_CDATA) {
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hfid = current_frame->ns ? current_frame->ns->hf_cdata : xml_ns.hf_cdata;
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is_cdata = TRUE;
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} else if ( tok->id > 0) {
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hfid = tok->id;
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} else {
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hfid = xml_ns.hf_cdata;
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}
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pi = proto_tree_add_item(current_frame->tree, hfid, tok->tvb, tok->offset, tok->len, ENC_UTF_8|ENC_NA);
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proto_item_set_text(pi, "%s",
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tvb_format_text(tok->tvb, tok->offset, tok->len));
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if (is_cdata) {
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new_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
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new_frame->type = XML_FRAME_CDATA;
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new_frame->name = NULL;
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new_frame->name_orig_case = NULL;
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new_frame->value = tvb_new_subset_length(tok->tvb, tok->offset, tok->len);
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insert_xml_frame(current_frame, new_frame);
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new_frame->item = pi;
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new_frame->last_item = pi;
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new_frame->tree = NULL;
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new_frame->start_offset = tok->offset;
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new_frame->length = tok->len;
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new_frame->ns = NULL;
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new_frame->pinfo = current_frame->pinfo;
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}
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}
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static void before_xmpli(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
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{
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GPtrArray *stack = (GPtrArray *)tvbparse_data;
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xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
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proto_item *pi;
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proto_tree *pt;
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tvbparse_elem_t *name_tok = tok->sub->next;
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gchar *name = tvb_get_string_enc(wmem_packet_scope(), name_tok->tvb, name_tok->offset, name_tok->len, ENC_ASCII);
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xml_ns_t *ns = (xml_ns_t *)wmem_map_lookup(xmpli_names, name);
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xml_frame_t *new_frame;
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int hf_tag;
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gint ett;
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ascii_strdown_inplace(name);
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if (!ns) {
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hf_tag = hf_xmlpi;
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ett = ett_xmpli;
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} else {
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hf_tag = ns->hf_tag;
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ett = ns->ett;
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}
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pi = proto_tree_add_item(current_frame->tree, hf_tag, tok->tvb, tok->offset, tok->len, ENC_UTF_8|ENC_NA);
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proto_item_set_text(pi, "%s", tvb_format_text(tok->tvb, tok->offset, (name_tok->offset - tok->offset) + name_tok->len));
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pt = proto_item_add_subtree(pi, ett);
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new_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
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new_frame->type = XML_FRAME_XMPLI;
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new_frame->name = name;
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new_frame->name_orig_case = name;
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new_frame->value = NULL;
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insert_xml_frame(current_frame, new_frame);
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new_frame->item = pi;
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new_frame->last_item = pi;
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new_frame->tree = pt;
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new_frame->start_offset = tok->offset;
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new_frame->length = tok->len;
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new_frame->ns = ns;
|
|
new_frame->pinfo = current_frame->pinfo;
|
|
|
|
g_ptr_array_add(stack, new_frame);
|
|
|
|
}
|
|
|
|
static void after_xmlpi(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
proto_tree_add_format_text(current_frame->tree, tok->tvb, tok->offset, tok->len);
|
|
|
|
if (stack->len > 1) {
|
|
g_ptr_array_remove_index_fast(stack, stack->len - 1);
|
|
} else {
|
|
proto_tree_add_expert(current_frame->tree, current_frame->pinfo, &ei_xml_closing_unopened_xmpli_tag,
|
|
tok->tvb, tok->offset, tok->len);
|
|
}
|
|
}
|
|
|
|
static void before_tag(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
tvbparse_elem_t *name_tok = tok->sub->next;
|
|
gchar *root_name;
|
|
gchar *name = NULL, *name_orig_case = NULL;
|
|
xml_ns_t *ns;
|
|
xml_frame_t *new_frame;
|
|
proto_item *pi;
|
|
proto_tree *pt;
|
|
|
|
if (name_tok->sub->id == XML_SCOPED_NAME) {
|
|
tvbparse_elem_t *root_tok = name_tok->sub->sub;
|
|
tvbparse_elem_t *leaf_tok = name_tok->sub->sub->next->next;
|
|
xml_ns_t *nameroot_ns;
|
|
|
|
root_name = (gchar *)tvb_get_string_enc(wmem_packet_scope(), root_tok->tvb, root_tok->offset, root_tok->len, ENC_ASCII);
|
|
name = (gchar *)tvb_get_string_enc(wmem_packet_scope(), leaf_tok->tvb, leaf_tok->offset, leaf_tok->len, ENC_ASCII);
|
|
name_orig_case = name;
|
|
|
|
nameroot_ns = (xml_ns_t *)wmem_map_lookup(xml_ns.elements, root_name);
|
|
|
|
if(nameroot_ns) {
|
|
ns = (xml_ns_t *)wmem_map_lookup(nameroot_ns->elements, name);
|
|
if (!ns) {
|
|
ns = &unknown_ns;
|
|
}
|
|
} else {
|
|
ns = &unknown_ns;
|
|
}
|
|
|
|
} else {
|
|
name = tvb_get_string_enc(wmem_packet_scope(), name_tok->tvb, name_tok->offset, name_tok->len, ENC_ASCII);
|
|
name_orig_case = wmem_strdup(wmem_packet_scope(), name);
|
|
ascii_strdown_inplace(name);
|
|
|
|
if(current_frame->ns) {
|
|
ns = (xml_ns_t *)wmem_map_lookup(current_frame->ns->elements, name);
|
|
|
|
if (!ns) {
|
|
if (! ( ns = (xml_ns_t *)wmem_map_lookup(root_ns->elements, name) ) ) {
|
|
ns = &unknown_ns;
|
|
}
|
|
}
|
|
} else {
|
|
ns = &unknown_ns;
|
|
}
|
|
}
|
|
|
|
pi = proto_tree_add_item(current_frame->tree, ns->hf_tag, tok->tvb, tok->offset, tok->len, ENC_UTF_8|ENC_NA);
|
|
proto_item_set_text(pi, "%s", tvb_format_text(tok->tvb,
|
|
tok->offset,
|
|
(name_tok->offset - tok->offset) + name_tok->len));
|
|
|
|
pt = proto_item_add_subtree(pi, ns->ett);
|
|
|
|
new_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
|
|
new_frame->type = XML_FRAME_TAG;
|
|
new_frame->name = name;
|
|
new_frame->name_orig_case = name_orig_case;
|
|
new_frame->value = NULL;
|
|
insert_xml_frame(current_frame, new_frame);
|
|
new_frame->item = pi;
|
|
new_frame->last_item = pi;
|
|
new_frame->tree = pt;
|
|
new_frame->start_offset = tok->offset;
|
|
new_frame->length = tok->len;
|
|
new_frame->ns = ns;
|
|
new_frame->pinfo = current_frame->pinfo;
|
|
|
|
g_ptr_array_add(stack, new_frame);
|
|
|
|
}
|
|
|
|
static void after_open_tag(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok _U_)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
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 = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
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_expert(current_frame->tree, current_frame->pinfo, &ei_xml_closing_unopened_tag,
|
|
tok->tvb, tok->offset, tok->len);
|
|
}
|
|
}
|
|
|
|
static void after_untag(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
proto_item_set_len(current_frame->item, (tok->offset - current_frame->start_offset) + tok->len);
|
|
current_frame->length = (tok->offset - current_frame->start_offset) + tok->len;
|
|
|
|
proto_tree_add_format_text(current_frame->tree, tok->tvb, tok->offset, tok->len);
|
|
|
|
if (stack->len > 1) {
|
|
g_ptr_array_remove_index_fast(stack, stack->len - 1);
|
|
} else {
|
|
proto_tree_add_expert(current_frame->tree, current_frame->pinfo, &ei_xml_closing_unopened_tag,
|
|
tok->tvb, tok->offset, tok->len);
|
|
}
|
|
}
|
|
|
|
static void before_dtd_doctype(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
xml_frame_t *new_frame;
|
|
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, ENC_ASCII|ENC_NA);
|
|
|
|
proto_item_set_text(dtd_item, "%s", tvb_format_text(tok->tvb, tok->offset, tok->len));
|
|
|
|
new_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
|
|
new_frame->type = XML_FRAME_DTD_DOCTYPE;
|
|
new_frame->name = (gchar *)tvb_get_string_enc(wmem_packet_scope(), name_tok->tvb,
|
|
name_tok->offset,
|
|
name_tok->len, ENC_ASCII);
|
|
new_frame->name_orig_case = new_frame->name;
|
|
new_frame->value = NULL;
|
|
insert_xml_frame(current_frame, new_frame);
|
|
new_frame->item = dtd_item;
|
|
new_frame->last_item = dtd_item;
|
|
new_frame->tree = proto_item_add_subtree(dtd_item, ett_dtd);
|
|
new_frame->start_offset = tok->offset;
|
|
new_frame->length = tok->len;
|
|
new_frame->ns = NULL;
|
|
new_frame->pinfo = current_frame->pinfo;
|
|
|
|
g_ptr_array_add(stack, new_frame);
|
|
}
|
|
|
|
static void pop_stack(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok _U_)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)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_expert(current_frame->tree, current_frame->pinfo, &ei_xml_closing_unopened_tag,
|
|
tok->tvb, tok->offset, tok->len);
|
|
}
|
|
}
|
|
|
|
static void after_dtd_close(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
proto_tree_add_format_text(current_frame->tree, tok->tvb, tok->offset, tok->len);
|
|
if (stack->len > 1) {
|
|
g_ptr_array_remove_index_fast(stack, stack->len - 1);
|
|
} else {
|
|
proto_tree_add_expert(current_frame->tree, current_frame->pinfo, &ei_xml_closing_unopened_tag,
|
|
tok->tvb, tok->offset, tok->len);
|
|
}
|
|
}
|
|
|
|
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 = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
gchar *name, *name_orig_case;
|
|
tvbparse_elem_t *value;
|
|
tvbparse_elem_t *value_part = (tvbparse_elem_t *)tok->sub->next->next->data;
|
|
int *hfidp;
|
|
int hfid;
|
|
proto_item *pi;
|
|
xml_frame_t *new_frame;
|
|
|
|
name = tvb_get_string_enc(wmem_packet_scope(), tok->sub->tvb, tok->sub->offset, tok->sub->len, ENC_ASCII);
|
|
name_orig_case = wmem_strdup(wmem_packet_scope(), name);
|
|
ascii_strdown_inplace(name);
|
|
|
|
if(current_frame->ns && (hfidp = (int *)wmem_map_lookup(current_frame->ns->attributes, name) )) {
|
|
hfid = *hfidp;
|
|
value = value_part;
|
|
} else {
|
|
hfid = hf_unknowwn_attrib;
|
|
value = tok;
|
|
}
|
|
|
|
pi = proto_tree_add_item(current_frame->tree, hfid, value->tvb, value->offset, value->len, ENC_UTF_8|ENC_NA);
|
|
proto_item_set_text(pi, "%s", tvb_format_text(tok->tvb, tok->offset, tok->len));
|
|
|
|
current_frame->last_item = pi;
|
|
|
|
new_frame = wmem_new(wmem_packet_scope(), xml_frame_t);
|
|
new_frame->type = XML_FRAME_ATTRIB;
|
|
new_frame->name = name;
|
|
new_frame->name_orig_case = name_orig_case;
|
|
new_frame->value = tvb_new_subset_length(value_part->tvb, value_part->offset,
|
|
value_part->len);
|
|
insert_xml_frame(current_frame, new_frame);
|
|
new_frame->item = pi;
|
|
new_frame->last_item = pi;
|
|
new_frame->tree = NULL;
|
|
new_frame->start_offset = tok->offset;
|
|
new_frame->length = tok->len;
|
|
new_frame->ns = NULL;
|
|
new_frame->pinfo = current_frame->pinfo;
|
|
|
|
}
|
|
|
|
static void unrecognized_token(void *tvbparse_data, const void *wanted_data _U_, tvbparse_elem_t *tok _U_)
|
|
{
|
|
GPtrArray *stack = (GPtrArray *)tvbparse_data;
|
|
xml_frame_t *current_frame = (xml_frame_t *)g_ptr_array_index(stack, stack->len - 1);
|
|
|
|
proto_tree_add_expert(current_frame->tree, current_frame->pinfo, &ei_xml_unrecognized_text,
|
|
tok->tvb, tok->offset, tok->len);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void init_xml_parser(void)
|
|
{
|
|
tvbparse_wanted_t *want_name =
|
|
tvbparse_chars(-1, 1, 0,
|
|
"abcdefghijklmnopqrstuvwxyz.-_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789",
|
|
NULL, NULL, NULL);
|
|
tvbparse_wanted_t *want_attr_name =
|
|
tvbparse_chars(-1, 1, 0,
|
|
"abcdefghijklmnopqrstuvwxyz.-_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:",
|
|
NULL, NULL, NULL);
|
|
|
|
tvbparse_wanted_t *want_scoped_name = tvbparse_set_seq(XML_SCOPED_NAME, NULL, NULL, NULL,
|
|
want_name,
|
|
tvbparse_char(-1, ":", NULL, NULL, NULL),
|
|
want_name,
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_tag_name = tvbparse_set_oneof(0, NULL, NULL, NULL,
|
|
want_scoped_name,
|
|
want_name,
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_attrib_value = 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, 1, 0, "0123456789", NULL, NULL, NULL),
|
|
want_name,
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_attributes = tvbparse_one_or_more(-1, NULL, NULL, NULL,
|
|
tvbparse_set_seq(-1, NULL, NULL, after_attrib,
|
|
want_attr_name,
|
|
tvbparse_char(-1, "=", NULL, NULL, NULL),
|
|
want_attrib_value,
|
|
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, after_xmlpi);
|
|
|
|
tvbparse_wanted_t *want_comment = 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),
|
|
TP_UNTIL_INCLUDE),
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_cdatasection = tvbparse_set_seq(hf_cdatasection, NULL, NULL, after_token,
|
|
tvbparse_string(-1, "<![CDATA[", NULL, NULL, NULL),
|
|
tvbparse_until(-1, NULL, NULL, NULL,
|
|
tvbparse_string(-1, "]]>", NULL, NULL, NULL),
|
|
TP_UNTIL_INCLUDE),
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_xmlpi = tvbparse_set_seq(hf_xmlpi, NULL, before_xmpli, NULL,
|
|
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_wanted_t *want_closing_tag = tvbparse_set_seq(0, NULL, NULL, after_untag,
|
|
tvbparse_char(-1, "<", NULL, NULL, NULL),
|
|
tvbparse_char(-1, "/", NULL, NULL, NULL),
|
|
want_tag_name,
|
|
tvbparse_char(-1, ">", NULL, NULL, NULL),
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_doctype_start = 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),
|
|
TP_UNTIL_INCLUDE),
|
|
NULL),
|
|
NULL),
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_dtd_tag = 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),
|
|
TP_UNTIL_INCLUDE),
|
|
NULL);
|
|
|
|
tvbparse_wanted_t *want_tag = tvbparse_set_seq(-1, NULL, before_tag, NULL,
|
|
tvbparse_char(-1, "<", NULL, NULL, NULL),
|
|
want_tag_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_wanted_t *want_dtd_close = tvbparse_set_seq(-1, NULL, NULL, after_dtd_close,
|
|
tvbparse_char(-1, "]", NULL, NULL, NULL),
|
|
tvbparse_char(-1, ">", NULL, NULL, NULL),
|
|
NULL);
|
|
|
|
want_ignore = tvbparse_chars(-1, 1, 0, " \t\r\n", NULL, NULL, NULL);
|
|
|
|
|
|
want = tvbparse_set_oneof(-1, NULL, NULL, NULL,
|
|
want_comment,
|
|
want_cdatasection,
|
|
want_xmlpi,
|
|
want_closing_tag,
|
|
want_doctype_start,
|
|
want_dtd_close,
|
|
want_dtd_tag,
|
|
want_tag,
|
|
tvbparse_not_chars(XML_CDATA, 1, 0, "<", NULL, NULL, after_token),
|
|
tvbparse_not_chars(-1, 1, 0, " \t\r\n", NULL, NULL, unrecognized_token),
|
|
NULL);
|
|
|
|
want_heur = tvbparse_set_oneof(-1, NULL, NULL, NULL,
|
|
want_comment,
|
|
want_cdatasection,
|
|
want_xmlpi,
|
|
want_doctype_start,
|
|
want_dtd_tag,
|
|
want_tag,
|
|
NULL);
|
|
|
|
}
|
|
|
|
|
|
static xml_ns_t *xml_new_namespace(wmem_map_t *hash, const gchar *name, ...)
|
|
{
|
|
xml_ns_t *ns = wmem_new(wmem_epan_scope(), xml_ns_t);
|
|
va_list ap;
|
|
gchar *attr_name;
|
|
|
|
ns->name = wmem_strdup(wmem_epan_scope(), name);
|
|
ns->hf_tag = -1;
|
|
ns->hf_cdata = -1;
|
|
ns->ett = -1;
|
|
ns->attributes = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
ns->elements = NULL;
|
|
|
|
va_start(ap, name);
|
|
|
|
while(( attr_name = va_arg(ap, gchar *) )) {
|
|
int *hfp = wmem_new(wmem_epan_scope(), int);
|
|
*hfp = -1;
|
|
wmem_map_insert(ns->attributes, wmem_strdup(wmem_epan_scope(), attr_name), hfp);
|
|
};
|
|
|
|
va_end(ap);
|
|
|
|
wmem_map_insert(hash, ns->name, ns);
|
|
|
|
return ns;
|
|
}
|
|
|
|
|
|
static void add_xml_field(wmem_array_t *hfs, int *p_id, const gchar *name, const gchar *fqn)
|
|
{
|
|
hf_register_info hfri;
|
|
|
|
hfri.p_id = p_id;
|
|
hfri.hfinfo.name = name;
|
|
hfri.hfinfo.abbrev = fqn;
|
|
hfri.hfinfo.type = FT_STRING;
|
|
hfri.hfinfo.display = BASE_NONE;
|
|
hfri.hfinfo.strings = NULL;
|
|
hfri.hfinfo.bitmask = 0x0;
|
|
hfri.hfinfo.blurb = NULL;
|
|
HFILL_INIT(hfri);
|
|
|
|
wmem_array_append_one(hfs, hfri);
|
|
}
|
|
|
|
static void add_xml_attribute_names(gpointer k, gpointer v, gpointer p)
|
|
{
|
|
struct _attr_reg_data *d = (struct _attr_reg_data *)p;
|
|
const gchar *basename = wmem_strconcat(wmem_epan_scope(), d->basename, ".", (gchar *)k, NULL);
|
|
|
|
add_xml_field(d->hf, (int*) v, (gchar *)k, basename);
|
|
}
|
|
|
|
|
|
static void add_xmlpi_namespace(gpointer k _U_, gpointer v, gpointer p)
|
|
{
|
|
xml_ns_t *ns = (xml_ns_t *)v;
|
|
const gchar *basename = wmem_strconcat(wmem_epan_scope(), (gchar *)p, ".", ns->name, NULL);
|
|
gint *ett_p = &(ns->ett);
|
|
struct _attr_reg_data d;
|
|
|
|
add_xml_field(hf_arr, &(ns->hf_tag), basename, basename);
|
|
|
|
g_array_append_val(ett_arr, ett_p);
|
|
|
|
d.basename = basename;
|
|
d.hf = hf_arr;
|
|
|
|
wmem_map_foreach(ns->attributes, add_xml_attribute_names, &d);
|
|
|
|
}
|
|
|
|
static void destroy_dtd_data(dtd_build_data_t *dtd_data)
|
|
{
|
|
g_free(dtd_data->proto_name);
|
|
g_free(dtd_data->media_type);
|
|
g_free(dtd_data->description);
|
|
g_free(dtd_data->proto_root);
|
|
|
|
g_string_free(dtd_data->error, TRUE);
|
|
|
|
while(dtd_data->elements->len) {
|
|
dtd_named_list_t *nl = (dtd_named_list_t *)g_ptr_array_remove_index_fast(dtd_data->elements, 0);
|
|
g_ptr_array_free(nl->list, TRUE);
|
|
g_free(nl->name);
|
|
g_free(nl);
|
|
}
|
|
|
|
g_ptr_array_free(dtd_data->elements, TRUE);
|
|
|
|
while(dtd_data->attributes->len) {
|
|
dtd_named_list_t *nl = (dtd_named_list_t *)g_ptr_array_remove_index_fast(dtd_data->attributes, 0);
|
|
g_ptr_array_free(nl->list, TRUE);
|
|
g_free(nl->name);
|
|
g_free(nl);
|
|
}
|
|
|
|
g_ptr_array_free(dtd_data->attributes, TRUE);
|
|
|
|
g_free(dtd_data);
|
|
}
|
|
|
|
static void copy_attrib_item(gpointer k, gpointer v _U_, gpointer p)
|
|
{
|
|
gchar *key = (gchar *)wmem_strdup(wmem_epan_scope(), (const gchar *)k);
|
|
int *value = wmem_new(wmem_epan_scope(), int);
|
|
wmem_map_t *dst = (wmem_map_t *)p;
|
|
|
|
*value = -1;
|
|
wmem_map_insert(dst, key, value);
|
|
|
|
}
|
|
|
|
static wmem_map_t *copy_attributes_hash(wmem_map_t *src)
|
|
{
|
|
wmem_map_t *dst = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
|
|
wmem_map_foreach(src, copy_attrib_item, dst);
|
|
|
|
return dst;
|
|
}
|
|
|
|
static xml_ns_t *duplicate_element(xml_ns_t *orig)
|
|
{
|
|
xml_ns_t *new_item = wmem_new(wmem_epan_scope(), xml_ns_t);
|
|
guint i;
|
|
|
|
new_item->name = wmem_strdup(wmem_epan_scope(), orig->name);
|
|
new_item->hf_tag = -1;
|
|
new_item->hf_cdata = -1;
|
|
new_item->ett = -1;
|
|
new_item->attributes = copy_attributes_hash(orig->attributes);
|
|
new_item->elements = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
new_item->element_names = g_ptr_array_new();
|
|
|
|
for(i=0; i < orig->element_names->len; i++) {
|
|
g_ptr_array_add(new_item->element_names,
|
|
g_ptr_array_index(orig->element_names, i));
|
|
}
|
|
|
|
return new_item;
|
|
}
|
|
|
|
static gchar *fully_qualified_name(GPtrArray *hier, gchar *name, gchar *proto_name)
|
|
{
|
|
guint i;
|
|
wmem_strbuf_t *s = wmem_strbuf_new(wmem_epan_scope(), proto_name);
|
|
|
|
wmem_strbuf_append(s, ".");
|
|
|
|
for (i = 1; i < hier->len; i++) {
|
|
wmem_strbuf_append_printf(s, "%s.", (gchar *)g_ptr_array_index(hier, i));
|
|
}
|
|
|
|
wmem_strbuf_append(s, name);
|
|
|
|
return wmem_strbuf_finalize(s);;
|
|
}
|
|
|
|
|
|
static xml_ns_t *make_xml_hier(gchar *elem_name,
|
|
xml_ns_t *root,
|
|
wmem_map_t *elements,
|
|
GPtrArray *hier,
|
|
GString *error,
|
|
wmem_array_t *hfs,
|
|
GArray *etts,
|
|
char *proto_name)
|
|
{
|
|
xml_ns_t *fresh;
|
|
xml_ns_t *orig;
|
|
gchar *fqn;
|
|
gint *ett_p;
|
|
gboolean recurred = FALSE;
|
|
guint i;
|
|
struct _attr_reg_data d;
|
|
|
|
if ( g_str_equal(elem_name, root->name) ) {
|
|
return NULL;
|
|
}
|
|
|
|
if (! ( orig = (xml_ns_t *)wmem_map_lookup(elements, elem_name) )) {
|
|
g_string_append_printf(error, "element '%s' is not defined\n", elem_name);
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < hier->len; i++) {
|
|
if( (elem_name) && (strcmp(elem_name, (gchar *) g_ptr_array_index(hier, i) ) == 0 )) {
|
|
recurred = TRUE;
|
|
}
|
|
}
|
|
|
|
if (recurred) {
|
|
return NULL;
|
|
}
|
|
|
|
fqn = fully_qualified_name(hier, elem_name, proto_name);
|
|
|
|
fresh = duplicate_element(orig);
|
|
fresh->fqn = fqn;
|
|
|
|
add_xml_field(hfs, &(fresh->hf_tag), wmem_strdup(wmem_epan_scope(), elem_name), fqn);
|
|
add_xml_field(hfs, &(fresh->hf_cdata), wmem_strdup(wmem_epan_scope(), elem_name), fqn);
|
|
|
|
ett_p = &fresh->ett;
|
|
g_array_append_val(etts, ett_p);
|
|
|
|
d.basename = fqn;
|
|
d.hf = hfs;
|
|
|
|
wmem_map_foreach(fresh->attributes, add_xml_attribute_names, &d);
|
|
|
|
while(fresh->element_names->len) {
|
|
gchar *child_name = (gchar *)g_ptr_array_remove_index(fresh->element_names, 0);
|
|
xml_ns_t *child_element = NULL;
|
|
|
|
g_ptr_array_add(hier, elem_name);
|
|
child_element = make_xml_hier(child_name, root, elements, hier, error, hfs, etts, proto_name);
|
|
g_ptr_array_remove_index_fast(hier, hier->len - 1);
|
|
|
|
if (child_element) {
|
|
wmem_map_insert(fresh->elements, child_element->name, child_element);
|
|
}
|
|
}
|
|
|
|
g_ptr_array_free(fresh->element_names, TRUE);
|
|
fresh->element_names = NULL;
|
|
return fresh;
|
|
}
|
|
|
|
static void free_elements(gpointer k _U_, gpointer v, gpointer p _U_)
|
|
{
|
|
xml_ns_t *e = (xml_ns_t *)v;
|
|
|
|
while (e->element_names->len) {
|
|
g_free(g_ptr_array_remove_index(e->element_names, 0));
|
|
}
|
|
|
|
g_ptr_array_free(e->element_names, TRUE);
|
|
}
|
|
|
|
static void register_dtd(dtd_build_data_t *dtd_data, GString *errors)
|
|
{
|
|
wmem_map_t *elements = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
gchar *root_name = NULL;
|
|
xml_ns_t *root_element = NULL;
|
|
wmem_array_t *hfs;
|
|
GArray *etts;
|
|
GPtrArray *hier;
|
|
gchar *curr_name;
|
|
GPtrArray *element_names = g_ptr_array_new();
|
|
|
|
/* we first populate elements with the those coming from the parser */
|
|
while(dtd_data->elements->len) {
|
|
dtd_named_list_t *nl = (dtd_named_list_t *)g_ptr_array_remove_index(dtd_data->elements, 0);
|
|
xml_ns_t *element = wmem_new(wmem_epan_scope(), xml_ns_t);
|
|
|
|
/* we will use the first element found as root in case no other one was given. */
|
|
if (root_name == NULL)
|
|
root_name = wmem_strdup(wmem_epan_scope(), nl->name);
|
|
|
|
element->name = wmem_strdup(wmem_epan_scope(), nl->name);
|
|
element->element_names = nl->list;
|
|
element->hf_tag = -1;
|
|
element->hf_cdata = -1;
|
|
element->ett = -1;
|
|
element->attributes = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
element->elements = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
|
|
if( wmem_map_lookup(elements, element->name) ) {
|
|
g_string_append_printf(errors, "element %s defined more than once\n", element->name);
|
|
free_elements(NULL, element, NULL);
|
|
} else {
|
|
wmem_map_insert(elements, element->name, element);
|
|
g_ptr_array_add(element_names, wmem_strdup(wmem_epan_scope(), element->name));
|
|
}
|
|
|
|
g_free(nl->name);
|
|
g_free(nl);
|
|
}
|
|
|
|
/* then we add the attributes to its relative elements */
|
|
while(dtd_data->attributes->len) {
|
|
dtd_named_list_t *nl = (dtd_named_list_t *)g_ptr_array_remove_index(dtd_data->attributes, 0);
|
|
xml_ns_t *element = (xml_ns_t *)wmem_map_lookup(elements, nl->name);
|
|
|
|
if (element) {
|
|
while(nl->list->len) {
|
|
gchar *name = (gchar *)g_ptr_array_remove_index(nl->list, 0);
|
|
int *id_p = wmem_new(wmem_epan_scope(), int);
|
|
|
|
*id_p = -1;
|
|
wmem_map_insert(element->attributes, wmem_strdup(wmem_epan_scope(), name), id_p);
|
|
g_free(name); }
|
|
}
|
|
else {
|
|
g_string_append_printf(errors, "element %s is not defined\n", nl->name);
|
|
}
|
|
|
|
g_free(nl->name);
|
|
g_ptr_array_free(nl->list, TRUE);
|
|
g_free(nl);
|
|
}
|
|
|
|
/* if a proto_root is defined in the dtd we'll use that as root */
|
|
if( dtd_data->proto_root ) {
|
|
wmem_free(wmem_epan_scope(), root_name);
|
|
root_name = wmem_strdup(wmem_epan_scope(), dtd_data->proto_root);
|
|
}
|
|
|
|
/* we use a stack with the names to avoid recurring infinitelly */
|
|
hier = g_ptr_array_new();
|
|
|
|
/*
|
|
* if a proto name was given in the dtd the dtd will be used as a protocol
|
|
* or else the dtd will be loaded as a branch of the xml namespace
|
|
*/
|
|
if( ! dtd_data->proto_name ) {
|
|
hfs = hf_arr;
|
|
etts = ett_arr;
|
|
g_ptr_array_add(hier, wmem_strdup(wmem_epan_scope(), "xml"));
|
|
} else {
|
|
/*
|
|
* if we were given a proto_name the namespace will be registered
|
|
* as an independent protocol with its own hf and ett arrays.
|
|
*/
|
|
hfs = wmem_array_new(wmem_epan_scope(), sizeof(hf_register_info));
|
|
etts = g_array_new(FALSE, FALSE, sizeof(gint *));
|
|
}
|
|
|
|
/* the root element of the dtd's namespace */
|
|
root_element = wmem_new(wmem_epan_scope(), xml_ns_t);
|
|
root_element->name = wmem_strdup(wmem_epan_scope(), root_name);
|
|
root_element->fqn = dtd_data->proto_name ? wmem_strdup(wmem_epan_scope(), dtd_data->proto_name) : root_element->name;
|
|
root_element->hf_tag = -1;
|
|
root_element->hf_cdata = -1;
|
|
root_element->ett = -1;
|
|
root_element->elements = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
root_element->element_names = element_names;
|
|
|
|
/*
|
|
* we can either create a namespace as a flat namespace
|
|
* in which all the elements are at the root level
|
|
* or we can create a recursive namespace
|
|
*/
|
|
if (dtd_data->recursion) {
|
|
xml_ns_t *orig_root;
|
|
|
|
make_xml_hier(root_name, root_element, elements, hier, errors, hfs, etts, dtd_data->proto_name);
|
|
|
|
wmem_map_insert(root_element->elements, (gpointer)root_element->name, root_element);
|
|
|
|
orig_root = (xml_ns_t *)wmem_map_lookup(elements, root_name);
|
|
|
|
/* if the root element was defined copy its attrlist to the child */
|
|
if(orig_root) {
|
|
struct _attr_reg_data d;
|
|
|
|
d.basename = dtd_data->proto_name;
|
|
d.hf = hfs;
|
|
|
|
root_element->attributes = copy_attributes_hash(orig_root->attributes);
|
|
wmem_map_foreach(root_element->attributes, add_xml_attribute_names, &d);
|
|
} else {
|
|
root_element->attributes = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
}
|
|
|
|
/* we then create all the sub hierarchies to catch the recurred cases */
|
|
g_ptr_array_add(hier, root_name);
|
|
|
|
while(root_element->element_names->len) {
|
|
curr_name = (gchar *)g_ptr_array_remove_index(root_element->element_names, 0);
|
|
|
|
if( ! wmem_map_lookup(root_element->elements, curr_name) ) {
|
|
xml_ns_t *fresh = make_xml_hier(curr_name, root_element, elements, hier, errors,
|
|
hfs, etts, dtd_data->proto_name);
|
|
wmem_map_insert(root_element->elements, (gpointer)fresh->name, fresh);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
/* a flat namespace */
|
|
g_ptr_array_add(hier, root_name);
|
|
|
|
root_element->attributes = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
|
|
while(root_element->element_names->len) {
|
|
xml_ns_t *fresh;
|
|
gint *ett_p;
|
|
struct _attr_reg_data d;
|
|
|
|
curr_name = (gchar *)g_ptr_array_remove_index(root_element->element_names, 0);
|
|
fresh = duplicate_element((xml_ns_t *)wmem_map_lookup(elements, curr_name));
|
|
fresh->fqn = fully_qualified_name(hier, curr_name, root_name);
|
|
|
|
add_xml_field(hfs, &(fresh->hf_tag), curr_name, fresh->fqn);
|
|
add_xml_field(hfs, &(fresh->hf_cdata), curr_name, fresh->fqn);
|
|
|
|
d.basename = fresh->fqn;
|
|
d.hf = hfs;
|
|
|
|
wmem_map_foreach(fresh->attributes, add_xml_attribute_names, &d);
|
|
|
|
ett_p = &fresh->ett;
|
|
g_array_append_val(etts, ett_p);
|
|
|
|
g_ptr_array_free(fresh->element_names, TRUE);
|
|
|
|
wmem_map_insert(root_element->elements, (gpointer)fresh->name, fresh);
|
|
}
|
|
}
|
|
|
|
g_ptr_array_free(element_names, TRUE);
|
|
|
|
g_ptr_array_free(hier, TRUE);
|
|
|
|
/*
|
|
* if we were given a proto_name the namespace will be registered
|
|
* as an independent protocol.
|
|
*/
|
|
if( dtd_data->proto_name ) {
|
|
gint *ett_p;
|
|
gchar *full_name, *short_name;
|
|
|
|
if (dtd_data->description) {
|
|
full_name = wmem_strdup(wmem_epan_scope(), dtd_data->description);
|
|
} else {
|
|
full_name = wmem_strdup(wmem_epan_scope(), root_name);
|
|
}
|
|
short_name = wmem_strdup(wmem_epan_scope(), dtd_data->proto_name);
|
|
|
|
ett_p = &root_element->ett;
|
|
g_array_append_val(etts, ett_p);
|
|
|
|
add_xml_field(hfs, &root_element->hf_cdata, root_element->name, root_element->fqn);
|
|
|
|
root_element->hf_tag = proto_register_protocol(full_name, short_name, short_name);
|
|
proto_register_field_array(root_element->hf_tag, (hf_register_info*)wmem_array_get_raw(hfs), wmem_array_get_count(hfs));
|
|
proto_register_subtree_array((gint **)g_array_data(etts), etts->len);
|
|
|
|
if (dtd_data->media_type) {
|
|
gchar* media_type = wmem_strdup(wmem_epan_scope(), dtd_data->media_type);
|
|
wmem_map_insert(media_types, media_type, root_element);
|
|
}
|
|
|
|
g_array_free(etts, TRUE);
|
|
}
|
|
|
|
wmem_map_insert(xml_ns.elements, root_element->name, root_element);
|
|
wmem_map_foreach(elements, free_elements, NULL);
|
|
|
|
destroy_dtd_data(dtd_data);
|
|
wmem_free(wmem_epan_scope(), root_name);
|
|
}
|
|
|
|
# define DIRECTORY_T GDir
|
|
# define FILE_T gchar
|
|
# define OPENDIR_OP(name) g_dir_open(name, 0, dummy)
|
|
# define DIRGETNEXT_OP(dir) g_dir_read_name(dir)
|
|
# define GETFNAME_OP(file) (file);
|
|
# define CLOSEDIR_OP(dir) g_dir_close(dir)
|
|
|
|
static void init_xml_names(void)
|
|
{
|
|
guint i;
|
|
DIRECTORY_T *dir;
|
|
const FILE_T *file;
|
|
const gchar *filename;
|
|
gchar *dirname;
|
|
|
|
GError **dummy = wmem_new(wmem_epan_scope(), GError *);
|
|
*dummy = NULL;
|
|
|
|
xmpli_names = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
media_types = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
|
|
unknown_ns.elements = xml_ns.elements = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
unknown_ns.attributes = xml_ns.attributes = wmem_map_new(wmem_epan_scope(), g_str_hash, g_str_equal);
|
|
|
|
xml_new_namespace(xmpli_names, "xml", "version", "encoding", "standalone", NULL);
|
|
|
|
dirname = get_persconffile_path("dtds", FALSE);
|
|
|
|
if (test_for_directory(dirname) != EISDIR) {
|
|
/* Although dir isn't a directory it may still use memory */
|
|
g_free(dirname);
|
|
dirname = get_datafile_path("dtds");
|
|
}
|
|
|
|
if (test_for_directory(dirname) == EISDIR) {
|
|
if ((dir = OPENDIR_OP(dirname)) != NULL) {
|
|
GString *errors = g_string_new("");
|
|
|
|
while ((file = DIRGETNEXT_OP(dir)) != NULL) {
|
|
guint namelen;
|
|
filename = GETFNAME_OP(file);
|
|
|
|
namelen = (int)strlen(filename);
|
|
if ( namelen > 4 && ( g_ascii_strcasecmp(filename+(namelen-4), ".dtd") == 0 ) ) {
|
|
GString *preparsed;
|
|
dtd_build_data_t *dtd_data;
|
|
|
|
g_string_truncate(errors, 0);
|
|
preparsed = dtd_preparse(dirname, filename, errors);
|
|
|
|
if (errors->len) {
|
|
report_failure("Dtd Preparser in file %s%c%s: %s",
|
|
dirname, G_DIR_SEPARATOR, filename, errors->str);
|
|
continue;
|
|
}
|
|
|
|
dtd_data = dtd_parse(preparsed);
|
|
|
|
g_string_free(preparsed, TRUE);
|
|
|
|
if (dtd_data->error->len) {
|
|
report_failure("Dtd Parser in file %s%c%s: %s",
|
|
dirname, G_DIR_SEPARATOR, filename, dtd_data->error->str);
|
|
destroy_dtd_data(dtd_data);
|
|
continue;
|
|
}
|
|
|
|
register_dtd(dtd_data, errors);
|
|
|
|
if (errors->len) {
|
|
report_failure("Dtd Registration in file: %s%c%s: %s",
|
|
dirname, G_DIR_SEPARATOR, filename, errors->str);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
g_string_free(errors, TRUE);
|
|
|
|
CLOSEDIR_OP(dir);
|
|
}
|
|
}
|
|
|
|
g_free(dirname);
|
|
|
|
for(i=0;i<array_length(default_media_types);i++) {
|
|
if( ! wmem_map_lookup(media_types, default_media_types[i]) ) {
|
|
wmem_map_insert(media_types, (gpointer)default_media_types[i], &xml_ns);
|
|
}
|
|
}
|
|
|
|
wmem_map_foreach(xmpli_names, add_xmlpi_namespace, (gpointer)"xml.xmlpi");
|
|
|
|
wmem_free(wmem_epan_scope(), dummy);
|
|
}
|
|
|
|
void
|
|
proto_register_xml(void)
|
|
{
|
|
static gint *ett_base[] = {
|
|
&unknown_ns.ett,
|
|
&xml_ns.ett,
|
|
&ett_dtd,
|
|
&ett_xmpli
|
|
};
|
|
|
|
static hf_register_info hf_base[] = {
|
|
{ &hf_xmlpi,
|
|
{"XMLPI", "xml.xmlpi",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_cdatasection,
|
|
{"CDATASection", "xml.cdatasection",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_comment,
|
|
{"Comment", "xml.comment",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_unknowwn_attrib,
|
|
{"Attribute", "xml.attribute",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_doctype,
|
|
{"Doctype", "xml.doctype",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_dtd_tag,
|
|
{"DTD Tag", "xml.dtdtag",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &unknown_ns.hf_cdata,
|
|
{"CDATA", "xml.cdata",
|
|
FT_STRING, BASE_NONE, NULL, 0, NULL,
|
|
HFILL }
|
|
},
|
|
{ &unknown_ns.hf_tag,
|
|
{"Tag", "xml.tag",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &xml_ns.hf_cdata,
|
|
{"Unknown", "xml.unknown",
|
|
FT_STRING, BASE_NONE, NULL, 0,
|
|
NULL, HFILL }
|
|
}
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_xml_closing_unopened_tag, { "xml.closing_unopened_tag", PI_MALFORMED, PI_ERROR, "Closing an unopened tag", EXPFILL }},
|
|
{ &ei_xml_closing_unopened_xmpli_tag, { "xml.closing_unopened_xmpli_tag", PI_MALFORMED, PI_ERROR, "Closing an unopened xmpli tag", EXPFILL }},
|
|
{ &ei_xml_unrecognized_text, { "xml.unrecognized_text", PI_PROTOCOL, PI_WARN, "Unrecognized text", EXPFILL }},
|
|
};
|
|
|
|
module_t *xml_module;
|
|
expert_module_t* expert_xml;
|
|
|
|
hf_arr = wmem_array_new(wmem_epan_scope(), sizeof(hf_register_info));
|
|
ett_arr = g_array_new(FALSE, FALSE, sizeof(gint *));
|
|
|
|
wmem_array_append(hf_arr, hf_base, array_length(hf_base));
|
|
g_array_append_vals(ett_arr, ett_base, array_length(ett_base));
|
|
|
|
init_xml_names();
|
|
|
|
xml_ns.hf_tag = proto_register_protocol("eXtensible Markup Language", "XML", xml_ns.name);
|
|
|
|
proto_register_field_array(xml_ns.hf_tag, (hf_register_info*)wmem_array_get_raw(hf_arr), wmem_array_get_count(hf_arr));
|
|
proto_register_subtree_array((gint **)g_array_data(ett_arr), ett_arr->len);
|
|
expert_xml = expert_register_protocol(xml_ns.hf_tag);
|
|
expert_register_field_array(expert_xml, ei, array_length(ei));
|
|
|
|
xml_module = prefs_register_protocol(xml_ns.hf_tag, NULL);
|
|
prefs_register_obsolete_preference(xml_module, "heuristic");
|
|
prefs_register_obsolete_preference(xml_module, "heuristic_tcp");
|
|
prefs_register_obsolete_preference(xml_module, "heuristic_udp");
|
|
/* XXX - UCS-2, or UTF-16? */
|
|
prefs_register_bool_preference(xml_module, "heuristic_unicode", "Use Unicode in heuristics",
|
|
"Try to recognize XML encoded in Unicode (UCS-2BE)",
|
|
&pref_heuristic_unicode);
|
|
|
|
g_array_free(ett_arr, TRUE);
|
|
|
|
xml_handle = register_dissector("xml", dissect_xml, xml_ns.hf_tag);
|
|
|
|
init_xml_parser();
|
|
}
|
|
|
|
static void
|
|
add_dissector_media(gpointer k, gpointer v _U_, gpointer p _U_)
|
|
{
|
|
dissector_add_string("media_type", (gchar *)k, xml_handle);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_xml(void)
|
|
{
|
|
wmem_map_foreach(media_types, add_dissector_media, NULL);
|
|
dissector_add_uint_range_with_preference("tcp.port", "", xml_handle);
|
|
|
|
heur_dissector_add("http", dissect_xml_heur, "XML in HTTP", "xml_http", xml_ns.hf_tag, HEURISTIC_DISABLE);
|
|
heur_dissector_add("sip", dissect_xml_heur, "XML in SIP", "xml_sip", xml_ns.hf_tag, HEURISTIC_DISABLE);
|
|
heur_dissector_add("media", dissect_xml_heur, "XML in media", "xml_media", xml_ns.hf_tag, HEURISTIC_DISABLE);
|
|
heur_dissector_add("tcp", dissect_xml_heur, "XML over TCP", "xml_tcp", xml_ns.hf_tag, HEURISTIC_DISABLE);
|
|
heur_dissector_add("udp", dissect_xml_heur, "XML over UDP", "xml_udp", xml_ns.hf_tag, HEURISTIC_DISABLE);
|
|
|
|
heur_dissector_add("wtap_file", dissect_xml_heur, "XML file", "xml_wtap", xml_ns.hf_tag, HEURISTIC_ENABLE);
|
|
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|