diff options
author | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
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committer | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
commit | 669db206cb1f270046ad400fff7655e20c63e723 (patch) | |
tree | 4eff24a2e16c8963e497e1fc575f35e6af59bd26 /epan/dissectors/packet-pop.c | |
parent | ae46c27a38700af669ef907491081f09df6f6b2c (diff) |
Move dissectors to epan/dissectors directory.
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
Diffstat (limited to 'epan/dissectors/packet-pop.c')
-rw-r--r-- | epan/dissectors/packet-pop.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/epan/dissectors/packet-pop.c b/epan/dissectors/packet-pop.c new file mode 100644 index 0000000000..e78a53be54 --- /dev/null +++ b/epan/dissectors/packet-pop.c @@ -0,0 +1,234 @@ +/* packet-pop.c + * Routines for pop 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_pop = -1; +static int hf_pop_response = -1; +static int hf_pop_request = -1; + +static gint ett_pop = -1; +static gint ett_pop_reqresp = -1; + +static dissector_handle_t data_handle; + +#define TCP_PORT_POP 110 + +static gboolean response_is_continuation(const guchar *data); + +static void +dissect_pop(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gboolean is_request; + gboolean is_continuation; + proto_tree *pop_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, "POP"); + + /* + * 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; + is_continuation = FALSE; + } else { + is_request = FALSE; + is_continuation = response_is_continuation(line); + } + + if (check_col(pinfo->cinfo, COL_INFO)) { + /* + * Put the first line from the buffer into the summary + * if it's a POP request or reply (but leave out the + * line terminator). + * Otherwise, just call it a continuation. + */ + if (is_continuation) + col_set_str(pinfo->cinfo, COL_INFO, "Continuation"); + else + 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_pop, tvb, offset, -1, + FALSE); + pop_tree = proto_item_add_subtree(ti, ett_pop); + + if (is_continuation) { + /* + * Put the whole packet into the tree as data. + */ + call_dissector(data_handle,tvb, pinfo, pop_tree); + return; + } + + if (is_request) { + proto_tree_add_boolean_hidden(pop_tree, + hf_pop_request, tvb, 0, 0, TRUE); + } else { + proto_tree_add_boolean_hidden(pop_tree, + hf_pop_response, tvb, 0, 0, TRUE); + } + + /* + * Put the line into the protocol tree. + */ + ti = proto_tree_add_text(pop_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + reqresp_tree = proto_item_add_subtree(ti, ett_pop_reqresp); + + /* + * Extract the first token, and, if there is a first + * token, add it as the request or reply code. + */ + 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: %s", + format_text(line, tokenlen)); + } else { + proto_tree_add_text(reqresp_tree, tvb, offset, + tokenlen, "Response: %s", + format_text(line, tokenlen)); + } + offset += next_token - line; + linelen -= next_token - line; + line = next_token; + } + + /* + * Add the rest of the first line as request or + * reply data. + */ + if (linelen != 0) { + if (is_request) { + proto_tree_add_text(reqresp_tree, tvb, offset, + linelen, "Request Arg: %s", + format_text(line, linelen)); + } else { + proto_tree_add_text(reqresp_tree, tvb, offset, + linelen, "Response Arg: %s", + format_text(line, linelen)); + } + } + offset = next_offset; + + /* + * Show the rest of the request or response as text, + * a line at a time. + */ + while (tvb_offset_exists(tvb, offset)) { + /* + * Find the end of the line. + */ + linelen = tvb_find_line_end(tvb, offset, -1, + &next_offset, FALSE); + + /* + * Put this line. + */ + proto_tree_add_text(pop_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, next_offset - offset)); + offset = next_offset; + } + } +} + +static gboolean response_is_continuation(const guchar *data) +{ + if (strncmp(data, "+OK", strlen("+OK")) == 0) + return FALSE; + + if (strncmp(data, "-ERR", strlen("-ERR")) == 0) + return FALSE; + + return TRUE; +} + +void +proto_register_pop(void) +{ + + static hf_register_info hf[] = { + { &hf_pop_response, + { "Response", "pop.response", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if POP response", HFILL }}, + + { &hf_pop_request, + { "Request", "pop.request", + FT_BOOLEAN, BASE_NONE, NULL, 0x0, + "TRUE if POP request", HFILL }} + }; + static gint *ett[] = { + &ett_pop, + &ett_pop_reqresp, + }; + + proto_pop = proto_register_protocol("Post Office Protocol", "POP", "pop"); + proto_register_field_array(proto_pop, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_pop(void) +{ + dissector_handle_t pop_handle; + + pop_handle = create_dissector_handle(dissect_pop, proto_pop); + dissector_add("tcp.port", TCP_PORT_POP, pop_handle); + data_handle = find_dissector("data"); +} |