cc36f0b931
the following: It is now possible to enable/disable a particular protocol decoding (i.e. the protocol dissector is void or not). When a protocol is disabled, it is displayed as Data and of course, all linked sub-protocols are disabled as well. Disabling a protocol could be interesting: - in case of buggy dissectors - in case of wrong heuristics - for performance reasons - to decode the data as another protocol (TODO) Currently (if I am not wrong), all dissectors but NFS can be disabled (and dissectors that do not register protocols :-) I do not like the way the RPC sub-dissectors are disabled (in the sub-dissectors) since this could be done in the RPC dissector itself, knowing the sub-protocol hfinfo entry (this is why, I've not modified the NFS one yet). Two functions are added in proto.c : gboolean proto_is_protocol_enabled(int n); void proto_set_decoding(int n, gboolean enabled); and two MACROs which can be used in dissectors: OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree) CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree) See also the XXX in proto_dlg.c and proto.c around the new functions. svn path=/trunk/; revision=2267
147 lines
4 KiB
C
147 lines
4 KiB
C
/* packet-imap.c
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* Routines for imap packet dissection
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* Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
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*
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* $Id: packet-imap.c,v 1.9 2000/08/13 14:08:16 deniel Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-tftp.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <string.h>
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#include <glib.h>
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#include "packet.h"
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static int proto_imap = -1;
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static int hf_imap_response = -1;
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static int hf_imap_request = -1;
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static gint ett_imap = -1;
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#define TCP_PORT_IMAP 143
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static void
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dissect_imap(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *imap_tree, *ti;
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gchar rr[50], rd[1500];
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int i1 = (u_char *)strchr(pd + offset, ' ') - (pd + offset); /* Where is that space */
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int i2;
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int max_data = pi.captured_len - offset;
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OLD_CHECK_DISPLAY_AS_DATA(proto_imap, pd, offset, fd, tree);
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memset(rr, '\0', sizeof(rr));
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memset(rd, '\0', sizeof(rd));
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if ((i1 > max_data) || (i1 <= 0)) {
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i1 = max_data;
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strncpy(rr, pd + offset, MIN(max_data - 2, sizeof(rr) - 1));
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}
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else {
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strncpy(rr, pd + offset, MIN(i1, sizeof(rr) - 1));
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i2 = ((u_char *)strchr(pd + offset + i1 + 1, '\r') - (pd + offset)) - i1 - 1;
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if (i2 > max_data - i1 - 1 || i2 <= 0) {
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i2 = ((u_char *)strchr(pd + offset + i1 + 1, '\n') - (pd + offset)) - i1 - 1;
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if (i2 > max_data - i1 - 1 || i2 <= 0)
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i2 = max_data - i1 - 1;
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}
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strncpy(rd, pd + offset + i1 + 1, MIN(i2, sizeof(rd) - 1));
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}
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "IMAP");
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if (check_col(fd, COL_INFO)) {
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col_add_fstr(fd, COL_INFO, "%s: %s %s", (pi.match_port == pi.destport)? "Request" : "Response", rr, rd);
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_imap, NullTVB, offset, END_OF_FRAME, FALSE);
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imap_tree = proto_item_add_subtree(ti, ett_imap);
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if (pi.match_port == pi.destport) { /* Request */
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proto_tree_add_boolean_hidden(imap_tree, hf_imap_request, NullTVB, offset, i1, TRUE);
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proto_tree_add_text(imap_tree, NullTVB, offset, i1, "Request Tag: %s", rr);
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proto_tree_add_text(imap_tree, NullTVB, offset + i1 + 1, END_OF_FRAME, "Request: %s", rd);
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}
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else {
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proto_tree_add_boolean_hidden(imap_tree, hf_imap_response, NullTVB, offset, i1, TRUE);
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proto_tree_add_text(imap_tree, NullTVB, offset, i1, "Response Tag: %s", rr);
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proto_tree_add_text(imap_tree, NullTVB, offset + i1 + 1, END_OF_FRAME, "Response: %s", rd);
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}
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}
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}
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void
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proto_register_imap(void)
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{
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static hf_register_info hf[] = {
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{ &hf_imap_response,
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{ "Response", "imap.response",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if IMAP response" }},
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{ &hf_imap_request,
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{ "Request", "imap.request",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if IMAP request" }}
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};
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static gint *ett[] = {
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&ett_imap,
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};
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proto_imap = proto_register_protocol("Internet Message Access Protocol",
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"imap");
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proto_register_field_array(proto_imap, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_imap(void)
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{
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old_dissector_add("tcp.port", TCP_PORT_IMAP, dissect_imap);
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}
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