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/* packet-gift.c
* Routines for giFT Internet File Transfer dissection
* Copyright 2000, Jon Oberheide <jon@oberheide.org>
*
* See http://www.giftproject.org/
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/strutil.h>
void proto_register_gift(void);
void proto_reg_handoff_gift(void);
static dissector_handle_t gift_handle;
#define TCP_PORT_GIFT 1213 /* Not IANA registered */
static int proto_gift;
static int hf_gift_response;
static int hf_gift_request;
static int hf_gift_response_cmd;
static int hf_gift_response_arg;
static int hf_gift_request_cmd;
static int hf_gift_request_arg;
static int ett_gift;
static int ett_gift_cmd;
static int
dissect_gift(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *ti, *hidden_item;
proto_tree *gift_tree, *cmd_tree;
bool is_request;
int offset = 0;
const unsigned char *line;
int next_offset;
int linelen;
int tokenlen;
const unsigned char *next_token;
/* set "Protocol" column text */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "giFT");
/* determine whether it is a request to or response from the server */
if (pinfo->match_uint == pinfo->destport)
is_request = true;
else
is_request = false;
linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, false);
line = tvb_get_ptr(tvb, offset, linelen);
/* set "Info" column text */
col_add_fstr(pinfo->cinfo, COL_INFO, "%s: %s",
is_request ? "Request" : "Response",
format_text(pinfo->pool, line, linelen));
/* if tree != NULL, build protocol tree */
if (tree) {
ti = proto_tree_add_item(tree, proto_gift, tvb, 0, -1, ENC_NA);
gift_tree = proto_item_add_subtree(ti, ett_gift);
if (is_request) {
hidden_item = proto_tree_add_boolean(gift_tree, hf_gift_request, tvb, 0, 0, true);
} else {
hidden_item = proto_tree_add_boolean(gift_tree, hf_gift_response, tvb, 0, 0, true);
}
proto_item_set_hidden(hidden_item);
ti = proto_tree_add_format_text(gift_tree, tvb, offset, next_offset - offset);
cmd_tree = proto_item_add_subtree(ti, ett_gift_cmd);
tokenlen = get_token_len(line, line + linelen, &next_token);
if (tokenlen != 0) {
if (is_request) {
proto_tree_add_string(cmd_tree, hf_gift_request_cmd, tvb, offset,
tokenlen, format_text(pinfo->pool, line, tokenlen));
} else {
proto_tree_add_string(cmd_tree, hf_gift_response_cmd, tvb, offset,
tokenlen, format_text(pinfo->pool, line, tokenlen));
}
offset += (int) (next_token - line);
linelen -= (int) (next_token - line);
line = next_token;
}
if (linelen != 0) {
if (is_request) {
proto_tree_add_string(cmd_tree, hf_gift_request_arg, tvb, offset,
linelen, format_text(pinfo->pool, line, linelen));
} else {
proto_tree_add_string(cmd_tree, hf_gift_response_arg, tvb, offset,
linelen, format_text(pinfo->pool, line, linelen));
}
}
}
return tvb_captured_length(tvb);
}
void
proto_register_gift(void)
{
static hf_register_info hf[] = {
{ &hf_gift_response,
{ "Response", "gift.response", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "true if giFT response", HFILL }
},
{ &hf_gift_request,
{ "Request", "gift.request", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "true if giFT request", HFILL }
},
{ &hf_gift_response_cmd,
{ "Response Command", "gift.response_cmd", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_gift_response_arg,
{ "Response Arg", "gift.response_arg", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_gift_request_cmd,
{ "Request Command", "gift.request_cmd", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
{ &hf_gift_request_arg,
{ "Request Arg", "gift.request_arg", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }
},
};
static int *ett[] = {
&ett_gift,
&ett_gift_cmd,
};
proto_gift = proto_register_protocol("giFT Internet File Transfer",
"giFT", "gift");
proto_register_field_array(proto_gift, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
gift_handle = register_dissector("gift", dissect_gift, proto_gift);
}
void
proto_reg_handoff_gift(void)
{
dissector_add_uint_with_preference("tcp.port", TCP_PORT_GIFT, gift_handle);
}
/*
* Editor modelines - https://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:
*/
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