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Diffstat (limited to 'epan/dissectors/packet-imap.c')
| -rw-r--r-- | epan/dissectors/packet-imap.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/epan/dissectors/packet-imap.c b/epan/dissectors/packet-imap.c new file mode 100644 index 0000000000..88075e96d5 --- /dev/null +++ b/epan/dissectors/packet-imap.c @@ -0,0 +1,192 @@ +/* packet-imap.c + * Routines for imap 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 + * + * Copied from packet-tftp.c + * + * 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_imap = -1; +static int hf_imap_response = -1; +static int hf_imap_request = -1; + +static gint ett_imap = -1; +static gint ett_imap_reqresp = -1; + +#define TCP_PORT_IMAP 143 + +static void +dissect_imap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gboolean is_request; + proto_tree *imap_tree, *reqresp_tree; + proto_item *ti; + gint offset = 0; + const guchar *line; + gint next_offset; + int linelen; + int tokenlen; + const guchar *next_token; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "IMAP"); + + /* + * Find the end of the first line. + * + * 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); + line = tvb_get_ptr(tvb, offset, linelen); + + if (pinfo->match_port == pinfo->destport) + is_request = TRUE; + else + is_request = FALSE; + + if (check_col(pinfo->cinfo, COL_INFO)) { + /* + * Put the first line from the buffer into the summary + * (but leave out the line terminator). + */ + col_add_fstr(pinfo->cinfo, COL_INFO, "%s: %s", + is_request ? "Request" : "Response", + format_text(line, linelen)); + } + + if (tree) { + ti = proto_tree_add_item(tree, proto_imap, tvb, offset, -1, + FALSE); + imap_tree = proto_item_add_subtree(ti, ett_imap); + + if (is_request) { + proto_tree_add_boolean_hidden(imap_tree, + hf_imap_request, tvb, 0, 0, TRUE); + } else { + proto_tree_add_boolean_hidden(imap_tree, + hf_imap_response, tvb, 0, 0, TRUE); + } + + /* + * Put the line into the protocol tree. + */ + ti = proto_tree_add_text(imap_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + reqresp_tree = proto_item_add_subtree(ti, ett_imap_reqresp); + + /* + * Show the first line as tags + requests or replies. + */ + + /* + * Extract the first token, and, if there is a first + * token, add it as the request or reply tag. + */ + tokenlen = get_token_len(line, line + linelen, &next_token); + if (tokenlen != 0) { + if (is_request) { + proto_tree_add_text(reqresp_tree, tvb, offset, + tokenlen, "Request Tag: %s", + format_text(line, tokenlen)); + } else { + proto_tree_add_text(reqresp_tree, tvb, offset, + tokenlen, "Response Tag: %s", + format_text(line, tokenlen)); + } + offset += next_token - line; + linelen -= next_token - line; + line = next_token; + } + + /* + * Add the rest of the line as request or reply data. + */ + if (linelen != 0) { + if (is_request) { + proto_tree_add_text(reqresp_tree, tvb, offset, + linelen, "Request: %s", + format_text(line, linelen)); + } else { + proto_tree_add_text(reqresp_tree, tvb, offset, + linelen, "Response: %s", + format_text(line, linelen)); + } + } + + /* + * XXX - show the rest of the frame; this requires that + * we handle literals, quoted strings, continuation + * responses, etc.. + * + * This involves a state machine, and attaching + * state information to the packets. + */ + } +} + +void +proto_register_imap(void) +{ + static hf_register_info hf[] = { + { &hf_imap_response, + { "Response", "imap.response", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if IMAP response", HFILL }}, + + { &hf_imap_request, + { "Request", "imap.request", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if IMAP request", HFILL }} + }; + static gint *ett[] = { + &ett_imap, + &ett_imap_reqresp, + }; + + proto_imap = proto_register_protocol("Internet Message Access Protocol", + "IMAP", "imap"); + proto_register_field_array(proto_imap, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_imap(void) +{ + dissector_handle_t imap_handle; + + imap_handle = create_dissector_handle(dissect_imap, proto_imap); + dissector_add("tcp.port", TCP_PORT_IMAP, imap_handle); +} |