* Routines for nntp packet dissection
* Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
*
- * $Id: packet-nntp.c,v 1.5 1999/10/17 14:46:40 deniel Exp $
+ * $Id: packet-nntp.c,v 1.24 2002/01/24 09:20:50 guy Exp $
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@unicom.net>
+ * By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
#include <string.h>
#include <glib.h>
-#include "packet.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;
-void
-dissect_nntp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
+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, *ti;
- const u_char *data, *dataend;
- const u_char *lineend, *eol;
+ proto_tree *nntp_tree;
+ proto_item *ti;
+ gint offset = 0;
+ gint next_offset;
int linelen;
- int max_data = pi.captured_len - offset;
- data = &pd[offset];
- dataend = data + END_OF_FRAME;
- if (dataend > data + max_data)
- dataend = data + max_data;
-
- if (pi.match_port == pi.destport)
+ if (pinfo->match_port == pinfo->destport)
type = "Request";
else
type = "Response";
- if (check_col(fd, COL_PROTOCOL))
- col_add_str(fd, COL_PROTOCOL, "NNTP");
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "NNTP");
- if (check_col(fd, COL_INFO)) {
+ if (check_col(pinfo->cinfo, COL_INFO)) {
/*
- * Put the first line from the buffer into the summary.
+ * 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.
*/
- lineend = find_line_end(data, dataend, &eol);
- linelen = eol - data;
- col_add_fstr(fd, COL_INFO, "%s: %s", type,
- format_text(data, linelen));
+ linelen = tvb_find_line_end(tvb, offset, -1, &next_offset);
+ 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);
+ }
- ti = proto_tree_add_item(tree, proto_nntp, offset, END_OF_FRAME, NULL);
- nntp_tree = proto_item_add_subtree(ti, ETT_NNTP);
-
- if (pi.match_port == pi.destport) {
- proto_tree_add_item_hidden(nntp_tree, hf_nntp_request, 0, 0, TRUE);
- } else {
- proto_tree_add_item_hidden(nntp_tree, hf_nntp_response, 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 (data < dataend) {
/*
- * Find the end of the line.
+ * 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....
*/
- lineend = find_line_end(data, dataend, &eol);
- linelen = lineend - data;
-
- /*
- * Put this line.
- */
- proto_tree_add_text(nntp_tree, offset, linelen, "%s",
- format_text(data, linelen));
- offset += linelen;
- data = lineend;
- }
+ while (tvb_offset_exists(tvb, offset)) {
+ /*
+ * Find the end of the line.
+ */
+ tvb_find_line_end(tvb, offset, -1, &next_offset);
+
+ /*
+ * 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" }},
-
- { &hf_nntp_request,
- { "Request", "nntp.request",
- FT_BOOLEAN, BASE_NONE, NULL, 0x0,
- "TRUE if NNTP request" }}
- };
-
- proto_nntp = proto_register_protocol("Network News Transfer Protocol",
- "nntp");
- proto_register_field_array(proto_nntp, hf, array_length(hf));
+ 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);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff