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Diffstat (limited to 'epan/dissectors/packet-rsh.c')
| -rw-r--r-- | epan/dissectors/packet-rsh.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/epan/dissectors/packet-rsh.c b/epan/dissectors/packet-rsh.c new file mode 100644 index 0000000000..856588a085 --- /dev/null +++ b/epan/dissectors/packet-rsh.c @@ -0,0 +1,133 @@ +/* packet-rsh.c + * Routines for rsh packet disassembly + * + * Robert Tsai <rtsai@netapp.com> + * Liberally copied from packet-http.c, by Guy Harris <guy@alum.mit.edu> + * + * $Id$ + * + * 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 <glib.h> +#include <epan/packet.h> +#include <epan/strutil.h> + +static int proto_rsh = -1; +static int hf_rsh_response = -1; +static int hf_rsh_request = -1; +static gint ett_rsh = -1; + +#define TCP_PORT_RSH 514 + +static void +dissect_rsh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *rsh_tree; + proto_item *ti; + gint offset = 0; + gint next_offset; + int linelen; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "RSH"); + if (check_col(pinfo->cinfo, COL_INFO)) { + /* Put the first line from the buffer into the summary. */ + tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); + linelen = next_offset - offset; /* include the line terminator */ + + /* + * Make sure the line terminator isn't past the end of + * the captured data in the packet, so we don't throw + * an exception in the "tvb_get_ptr()" call. + */ + if (linelen > (int) tvb_length(tvb)) + linelen = tvb_length(tvb); + col_add_str(pinfo->cinfo, COL_INFO, + tvb_format_text(tvb, offset, linelen)); + } + if (tree) { + ti = proto_tree_add_item(tree, proto_rsh, tvb, offset, -1, + FALSE); + rsh_tree = proto_item_add_subtree(ti, ett_rsh); + + /* + * Process the packet data, a line at a time. + */ + 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(rsh_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + offset = next_offset; + } + + if (pinfo->match_port == pinfo->destport) + proto_tree_add_boolean_hidden(rsh_tree, + hf_rsh_request, tvb, 0, 0, 1); + else + proto_tree_add_boolean_hidden(rsh_tree, + hf_rsh_response, tvb, 0, 0, 1); + } +} + +void +proto_register_rsh(void) +{ + + static hf_register_info hf[] = { + { &hf_rsh_response, + { "Response", "rsh.response", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if rsh response", HFILL }}, + { &hf_rsh_request, + { "Request", "rsh.request", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if rsh request", HFILL }}, + }; + + static gint *ett[] = { + &ett_rsh, + }; + + proto_rsh = proto_register_protocol("Remote Shell", "RSH", "rsh"); + proto_register_field_array(proto_rsh, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_rsh(void) +{ + dissector_handle_t rsh_handle; + + rsh_handle = create_dissector_handle(dissect_rsh, proto_rsh); + dissector_add("tcp.port", TCP_PORT_RSH, rsh_handle); +} |