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Diffstat (limited to 'epan/dissectors/packet-nntp.c')
| -rw-r--r-- | epan/dissectors/packet-nntp.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/epan/dissectors/packet-nntp.c b/epan/dissectors/packet-nntp.c new file mode 100644 index 0000000000..71478fcd07 --- /dev/null +++ b/epan/dissectors/packet-nntp.c @@ -0,0 +1,148 @@ +/* packet-nntp.c + * Routines for nntp packet dissection + * Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com> + * + * $Id$ + * + * 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 <stdio.h> + +#include <string.h> +#include <glib.h> +#include <epan/packet.h> +#include <epan/strutil.h> + +static int proto_nntp = -1; +static int hf_nntp_response = -1; +static int hf_nntp_request = -1; + +static gint ett_nntp = -1; + +#define TCP_PORT_NNTP 119 + +static void +dissect_nntp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gchar *type; + proto_tree *nntp_tree; + proto_item *ti; + gint offset = 0; + gint next_offset; + int linelen; + + if (pinfo->match_port == pinfo->destport) + type = "Request"; + else + type = "Response"; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "NNTP"); + + if (check_col(pinfo->cinfo, COL_INFO)) { + /* + * Put the first line from the buffer into the summary + * (but leave out the line terminator). + * + * Note that "tvb_find_line_end()" will return a value that + * is not longer than what's in the buffer, so the + * "tvb_get_ptr()" call won't throw an exception. + */ + linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, + FALSE); + col_add_fstr(pinfo->cinfo, COL_INFO, "%s: %s", type, + tvb_format_text(tvb, offset, linelen)); + } + + if (tree) { + ti = proto_tree_add_item(tree, proto_nntp, tvb, offset, -1, + FALSE); + nntp_tree = proto_item_add_subtree(ti, ett_nntp); + + if (pinfo->match_port == pinfo->destport) { + proto_tree_add_boolean_hidden(nntp_tree, + hf_nntp_request, tvb, 0, 0, TRUE); + } else { + proto_tree_add_boolean_hidden(nntp_tree, + hf_nntp_response, tvb, 0, 0, TRUE); + } + + /* + * Show the request or response as text, a line at a time. + * XXX - for requests, we could display the stuff after the + * first line, if any, based on what the request was, and + * for responses, we could display it based on what the + * matching request was, although the latter requires us to + * know what the matching request was.... + */ + while (tvb_offset_exists(tvb, offset)) { + /* + * Find the end of the line. + */ + tvb_find_line_end(tvb, offset, -1, &next_offset, + FALSE); + + /* + * Put this line. + */ + proto_tree_add_text(nntp_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + offset = next_offset; + } + } +} + +void +proto_register_nntp(void) +{ + static hf_register_info hf[] = { + { &hf_nntp_response, + { "Response", "nntp.response", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if NNTP response", HFILL }}, + + { &hf_nntp_request, + { "Request", "nntp.request", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if NNTP request", HFILL }} + }; + static gint *ett[] = { + &ett_nntp, + }; + + proto_nntp = proto_register_protocol("Network News Transfer Protocol", + "NNTP", "nntp"); + proto_register_field_array(proto_nntp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_nntp(void) +{ + dissector_handle_t nntp_handle; + + nntp_handle = create_dissector_handle(dissect_nntp, proto_nntp); + dissector_add("tcp.port", TCP_PORT_NNTP, nntp_handle); +} |