diff options
author | gram <gram@f5534014-38df-0310-8fa8-9805f1628bb7> | 2004-07-18 18:06:47 +0000 |
---|---|---|
committer | gram <gram@f5534014-38df-0310-8fa8-9805f1628bb7> | 2004-07-18 18:06:47 +0000 |
commit | 35a6e092c3153cc7fbd1337c2230d596b0f7abcb (patch) | |
tree | 4eff24a2e16c8963e497e1fc575f35e6af59bd26 /epan/dissectors/packet-syslog.c | |
parent | 8dd1ee5ef22a787f4035d68e8e2ec8371fd23266 (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.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@11410 f5534014-38df-0310-8fa8-9805f1628bb7
Diffstat (limited to 'epan/dissectors/packet-syslog.c')
-rw-r--r-- | epan/dissectors/packet-syslog.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/epan/dissectors/packet-syslog.c b/epan/dissectors/packet-syslog.c new file mode 100644 index 0000000000..67859835e7 --- /dev/null +++ b/epan/dissectors/packet-syslog.c @@ -0,0 +1,253 @@ +/* packet-syslog.c + * Routines for syslog message dissection + * + * Copyright 2000, Gerald Combs <gerald@ethereal.com> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * 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 <stdlib.h> +#include <ctype.h> + +#include <string.h> +#include <glib.h> +#include <epan/packet.h> + +#define UDP_PORT_SYSLOG 514 + +#define PRIORITY_MASK 0x0007 /* 0000 0111 */ +#define FACILITY_MASK 0x03f8 /* 1111 1000 */ + +/* The maximum number if priority digits to read in. */ +#define MAX_DIGITS 3 + +#define COL_INFO_LEN 32 +#define ELLIPSIS "..." /* ISO 8859-1 doesn't appear to have a real ellipsis. */ + +static const value_string short_lev[] = { + { 0, "EMERG" }, + { 1, "ALERT" }, + { 2, "CRIT" }, + { 3, "ERR" }, + { 4, "WARNING" }, + { 5, "NOTICE" }, + { 6, "INFO" }, + { 7, "DEBUG" }, + { 0, NULL }, +}; + +static const value_string short_fac[] = { + { 0, "KERN" }, + { 1, "USER" }, + { 2, "MAIL" }, + { 3, "DAEMON" }, + { 4, "AUTH" }, + { 5, "SYSLOG" }, + { 6, "LPR" }, + { 7, "NEWS" }, + { 8, "UUCP" }, + { 9, "CRON" }, /* The BSDs, Linux, and others */ + { 10, "AUTHPRIV" }, + { 11, "FTP" }, + { 15, "CRON" }, /* Solaris */ + { 16, "LOCAL0" }, + { 17, "LOCAL1" }, + { 18, "LOCAL2" }, + { 19, "LOCAL3" }, + { 20, "LOCAL4" }, + { 21, "LOCAL5" }, + { 22, "LOCAL6" }, + { 23, "LOCAL7" }, + { 0, NULL }, +}; + +static const value_string long_lev[] = { + { 0, "EMERG - system is unusable" }, + { 1, "ALERT - action must be taken immediately" }, + { 2, "CRIT - critical conditions" }, + { 3, "ERR - error conditions" }, + { 4, "WARNING - warning conditions" }, + { 5, "NOTICE - normal but significant condition" }, + { 6, "INFO - informational" }, + { 7, "DEBUG - debug-level messages" }, + { 0, NULL }, +}; + +static const value_string long_fac[] = { + { 0, "KERN - kernel messages" }, + { 1, "USER - random user-level messages" }, + { 2, "MAIL - mail system" }, + { 3, "DAEMON - system daemons" }, + { 4, "AUTH - security/authorization messages" }, + { 5, "SYSLOG - messages generated internally by syslogd" }, + { 6, "LPR - line printer subsystem" }, + { 7, "NEWS - network news subsystem" }, + { 8, "UUCP - UUCP subsystem" }, + { 9, "CRON - clock daemon (BSD, Linux)" }, + { 10, "AUTHPRIV - security/authorization messages (private)" }, + { 11, "FTP - ftp daemon" }, + { 15, "CRON - clock daemon (Solaris)" }, + { 16, "LOCAL0 - reserved for local use" }, + { 17, "LOCAL1 - reserved for local use" }, + { 18, "LOCAL2 - reserved for local use" }, + { 19, "LOCAL3 - reserved for local use" }, + { 20, "LOCAL4 - reserved for local use" }, + { 21, "LOCAL5 - reserved for local use" }, + { 22, "LOCAL6 - reserved for local use" }, + { 23, "LOCAL7 - reserved for local use" }, + { 0, NULL }, +}; + +static gint proto_syslog = -1; +static gint hf_syslog_level = -1; +static gint hf_syslog_facility = -1; +static gint hf_syslog_msg = -1; + +static gint ett_syslog = -1; + +/* I couldn't find any documentation for the syslog message format. + According to the BSD sources, the message format is '<', P, '>', and + T. P is a decimal value, which should be treated as an 8 bit + unsigned integer. The lower three bits comprise the level, and the + upper five bits are the facility. T is the message text. + */ + +static void dissect_syslog(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gint pri = -1, lev = -1, fac = -1; + gint msg_off = 0, msg_len; + gint ellipsis_len = (COL_INFO_LEN - strlen(ELLIPSIS)) - 1; + proto_item *ti; + proto_tree *syslog_tree; + gchar msg_str[COL_INFO_LEN]; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Syslog"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + if (tvb_get_guint8(tvb, msg_off) == '<') { + /* A facility and level follow. */ + msg_off++; + pri = 0; + while (tvb_bytes_exist(tvb, msg_off, 1) && + isdigit(tvb_get_guint8(tvb, msg_off)) && msg_off <= MAX_DIGITS) { + pri = pri * 10 + (tvb_get_guint8(tvb, msg_off) - '0'); + msg_off++; + } + if (tvb_get_guint8(tvb, msg_off) == '>') + msg_off++; + fac = (pri & FACILITY_MASK) >> 3; + lev = pri & PRIORITY_MASK; + } + + /* Copy the message into a string buffer, with a trailing ellipsis if needed. */ + msg_len = tvb_ensure_length_remaining(tvb, msg_off); + if (msg_len >= COL_INFO_LEN) { + tvb_memcpy(tvb, msg_str, msg_off, ellipsis_len); + strcpy (msg_str + ellipsis_len, ELLIPSIS); + } else { + tvb_memcpy(tvb, msg_str, msg_off, msg_len); + msg_str[msg_len] = '\0'; + } + + if (check_col(pinfo->cinfo, COL_INFO)) { + if (pri >= 0) { + col_add_fstr(pinfo->cinfo, COL_INFO, "%s.%s: %s", + val_to_str(fac, short_fac, "UNKNOWN"), + val_to_str(lev, short_lev, "UNKNOWN"), msg_str); + } else { + col_add_fstr(pinfo->cinfo, COL_INFO, "%s", msg_str); + } + } + + if (tree) { + if (pri >= 0) { + ti = proto_tree_add_protocol_format(tree, proto_syslog, tvb, 0, -1, + "Syslog message: %s.%s: %s", + val_to_str(fac, short_fac, "UNKNOWN"), + val_to_str(lev, short_lev, "UNKNOWN"), msg_str); + } else { + ti = proto_tree_add_protocol_format(tree, proto_syslog, tvb, 0, -1, + "Syslog message: (unknown): %s", msg_str); + } + syslog_tree = proto_item_add_subtree(ti, ett_syslog); + if (pri >= 0) { + ti = proto_tree_add_uint(syslog_tree, hf_syslog_facility, tvb, 0, + msg_off, pri); + ti = proto_tree_add_uint(syslog_tree, hf_syslog_level, tvb, 0, + msg_off, pri); + } + proto_tree_add_item(syslog_tree, hf_syslog_msg, tvb, msg_off, + msg_len, FALSE); + } + return; +} + +/* Register the protocol with Ethereal */ +void proto_register_syslog(void) +{ + + /* Setup list of header fields */ + static hf_register_info hf[] = { + { &hf_syslog_facility, + { "Facility", "syslog.facility", + FT_UINT8, BASE_DEC, VALS(long_fac), FACILITY_MASK, + "Message facility", HFILL } + }, + { &hf_syslog_level, + { "Level", "syslog.level", + FT_UINT8, BASE_DEC, VALS(long_lev), PRIORITY_MASK, + "Message level", HFILL } + }, + { &hf_syslog_msg, + { "Message", "syslog.msg", + FT_STRING, BASE_NONE, NULL, 0x0, + "Message Text", HFILL } + }, + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_syslog, + }; + + /* Register the protocol name and description */ + proto_syslog = proto_register_protocol("Syslog message", "Syslog", "syslog"); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_syslog, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_syslog(void) +{ + dissector_handle_t syslog_handle; + + syslog_handle = create_dissector_handle(dissect_syslog, proto_syslog); + dissector_add("udp.port", UDP_PORT_SYSLOG, syslog_handle); +} |