/* packet-text-media.c * Routines for text-based media dissection. * * NOTE - The media type is either found in pinfo->match_string, * or passed into the dissector * * (C) Olivier Biot, 2004. * * Refer to the AUTHORS file or the AUTHORS section in the man page * for contacting the author(s) of this file. * * Wireshark - Network traffic analyzer * By Gerald Combs * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ /* Edit this file with 4-space tabs */ #include "config.h" #include #include "packet-http.h" /* * Media dissector for line-based text media like text/plain, message/http. * * TODO - character set and chunked transfer-coding */ void proto_register_text_lines(void); void proto_reg_handoff_text_lines(void); /* Filterable header fields */ static gint proto_text_lines = -1; /* Subtrees */ static gint ett_text_lines = -1; /* Dissector handles */ static dissector_handle_t xml_handle; static int dissect_text_lines(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data) { proto_tree *subtree; proto_item *ti; gint offset = 0, next_offset; gint len; http_message_info_t *message_info; const char *data_name; int length = tvb_captured_length(tvb); /* Check if this is actually xml * If there is less than 38 characters this is not XML * */ if(length > 38){ if (tvb_strncaseeql(tvb, 0, "match_string; if (! (data_name && data_name[0])) { /* * No information from "match_string" */ message_info = (http_message_info_t *)data; if (message_info == NULL) { /* * No information from dissector data */ data_name = NULL; } else { data_name = message_info->media_str; if (! (data_name && data_name[0])) { /* * No information from dissector data */ data_name = NULL; } } } if (data_name) col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "(%s)", data_name); if (tree) { guint lines_read = 0; ti = proto_tree_add_item(tree, proto_text_lines, tvb, 0, -1, ENC_NA); if (data_name) proto_item_append_text(ti, ": %s", data_name); subtree = proto_item_add_subtree(ti, ett_text_lines); /* Read the media line by line */ while (tvb_offset_exists(tvb, offset)) { /* * XXX - we need to be passed the parameters * of the content type via data parameter, * so that we know the character set. We'd * have to handle that character set, which * might be a multibyte character set such * as "iso-10646-ucs-2", or might require other * special processing. */ len = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); if (len == -1) break; /* We use next_offset - offset instead of len in the * call to proto_tree_add_format_text() so it will include the * line terminator(s) (\r and/or \n) in the display. */ proto_tree_add_format_text(subtree, tvb, offset, next_offset - offset); lines_read++; offset = next_offset; } proto_item_append_text(subtree, " (%u lines)", lines_read); } return length; } void proto_register_text_lines(void) { static gint *ett[] = { &ett_text_lines, }; proto_register_subtree_array(ett, array_length(ett)); proto_text_lines = proto_register_protocol( "Line-based text data", /* Long name */ "Line-based text data", /* Short name */ "data-text-lines"); /* Filter name */ register_dissector("data-text-lines", dissect_text_lines, proto_text_lines); } void proto_reg_handoff_text_lines(void) { dissector_handle_t text_lines_handle; text_lines_handle = find_dissector("data-text-lines"); dissector_add_string("media_type", "text/plain", text_lines_handle); /* RFC 2046 */ dissector_add_string("media_type", "text/richtext", text_lines_handle); /* RFC 1341 */ dissector_add_string("media_type", "text/enriched", text_lines_handle); /* RFC 1896 */ dissector_add_string("media_type", "text/parameters", text_lines_handle); /* W3C line-based textual media */ dissector_add_string("media_type", "text/html", text_lines_handle); dissector_add_string("media_type", "text/xml-external-parsed-entity", text_lines_handle); dissector_add_string("media_type", "text/css", text_lines_handle); dissector_add_string("media_type", "application/xml-external-parsed-entity", text_lines_handle); dissector_add_string("media_type", "text/javascript", text_lines_handle); dissector_add_string("media_type", "application/x-javascript", text_lines_handle); dissector_add_string("media_type", "application/x-tia-p25-issi", text_lines_handle); dissector_add_string("media_type", "application/x-tia-p25-sndcp", text_lines_handle); dissector_add_string("media_type", "application/x-ns-proxy-autoconfig", text_lines_handle); dissector_add_string("media_type", "text/vnd.sun.j2me.app-descriptor", text_lines_handle); dissector_add_string("media_type", "application/vnd.poc.refer-to", text_lines_handle); dissector_add_string("media_type", "application/vnd.drm.message", text_lines_handle); dissector_add_string("media_type", "application/x-wms-logplaystats", text_lines_handle); dissector_add_string("media_type", "application/x-rtsp-udp-packetpair", text_lines_handle); xml_handle = find_dissector_add_dependency("xml", proto_text_lines); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 8 * tab-width: 8 * indent-tabs-mode: t * End: * * vi: set shiftwidth=8 tabstop=8 noexpandtab: * :indentSize=8:tabSize=8:noTabs=false: */