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Diffstat (limited to 'epan/dissectors/packet-irc.c')
| -rw-r--r-- | epan/dissectors/packet-irc.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/epan/dissectors/packet-irc.c b/epan/dissectors/packet-irc.c new file mode 100644 index 0000000000..66976bed7b --- /dev/null +++ b/epan/dissectors/packet-irc.c @@ -0,0 +1,162 @@ +/* packet-irc.c + * Routines for IRC packet dissection + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from packet-tftp.c + * + * 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 <stdio.h> + +#include <string.h> +#include <glib.h> +#include <epan/packet.h> + +static int proto_irc = -1; +static int hf_irc_request = -1; +static int hf_irc_response = -1; +static int hf_irc_command = -1; + +static gint ett_irc = -1; + +#define TCP_PORT_IRC 6667 + /* good candidate for dynamic port specification */ + +static void +dissect_irc_request(proto_tree *tree, tvbuff_t *tvb, int offset, int len, + const char *line, int linelen) +{ + proto_tree_add_boolean_hidden(tree, hf_irc_request, tvb, offset, len, + TRUE); + proto_tree_add_text(tree, tvb, offset, len, "Request Line: %.*s", + linelen, line); +} + +static void +dissect_irc_response(proto_tree *tree, tvbuff_t *tvb, int offset, int len, + const char *line, int linelen) +{ + proto_tree_add_boolean_hidden(tree, hf_irc_response, tvb, offset, len, + TRUE); + proto_tree_add_text(tree, tvb, offset, len, "Response Line: %.*s", + linelen, line); +} + +static void +dissect_irc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *irc_tree, *ti; + gint offset = 0; + const guchar *line; + gint next_offset; + int linelen; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "IRC"); + + if (check_col(pinfo->cinfo, COL_INFO)) + { + col_set_str(pinfo->cinfo, COL_INFO, + (pinfo->match_port == pinfo->destport) ? "Request" : "Response"); + } + + if (tree) + { + ti = proto_tree_add_item(tree, proto_irc, tvb, 0, -1, FALSE); + irc_tree = proto_item_add_subtree(ti, ett_irc); + + /* + * Process the packet data, a line at a time. + */ + while (tvb_offset_exists(tvb, offset)) + { + /* + * Find the end of the line. + */ + linelen = tvb_find_line_end(tvb, offset, -1, + &next_offset, FALSE); + + /* + * Get a buffer that refers to the line (without + * the line terminator). + */ + line = tvb_get_ptr(tvb, offset, linelen); + + if (linelen != 0) + { + if (pinfo->match_port == pinfo->destport) + { + dissect_irc_request(irc_tree, tvb, + offset, next_offset - offset, + line, linelen); + } + else + { + dissect_irc_response(irc_tree, tvb, + offset, next_offset - offset, + line, linelen); + } + } + offset = next_offset; + } + } +} + +void +proto_register_irc(void) +{ + static hf_register_info hf[] = { + { &hf_irc_response, + { "Response", "irc.response", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if IRC response", HFILL }}, + + { &hf_irc_request, + { "Request", "irc.request", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if IRC request", HFILL }}, + + { &hf_irc_command, + { "Command", "irc.command", + FT_STRING, BASE_NONE, NULL, 0x0, + "Command associated with request", HFILL }} + }; + + static gint *ett[] = { + &ett_irc, + }; + proto_irc = proto_register_protocol("Internet Relay Chat", "IRC", "irc"); + proto_register_field_array(proto_irc, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_irc(void) +{ + dissector_handle_t irc_handle; + + irc_handle = create_dissector_handle(dissect_irc, proto_irc); + dissector_add("tcp.port", TCP_PORT_IRC, irc_handle); +} |