/* * Copyright (c) 1998-2004  Hannes Gredler <hannes@tcpdump.org> *      The TCPDUMP project * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code * distributions retain the above copyright notice and this paragraph * in its entirety, and (2) distributions including binary code include * the above copyright notice and this paragraph in its entirety in * the documentation or other materials provided with the distribution. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. */#ifndef lintstatic const char rcsid[] _U_ =    "@(#) $Header: /tcpdump/master/tcpdump/print-syslog.c,v 1.1 2004-10-29 11:42:53 hannes Exp $";#endif#ifdef HAVE_CONFIG_H#include "config.h"#endif#include <tcpdump-stdinc.h>#include <stdio.h>#include <stdlib.h>#include "interface.h"#include "extract.h"#include "addrtoname.h"/*  * tokenlists and #defines taken from Ethereal - Network traffic analyzer * by Gerald Combs <gerald@ethereal.com> */#define SYSLOG_SEVERITY_MASK 0x0007  /* 0000 0000 0000 0111 */#define SYSLOG_FACILITY_MASK 0x03f8  /* 0000 0011 1111 1000 */#define SYSLOG_MAX_DIGITS 3 /* The maximum number if priority digits to read in. */static const struct tok syslog_severity_values[] = {  { 0,      "emergency" },  { 1,      "alert" },  { 2,      "critical" },  { 3,      "error" },  { 4,      "warning" },  { 5,      "notice" },  { 6,      "info" },  { 7,      "debug" },  { 0, NULL },};static const struct tok syslog_facility_values[] = {  { 0,     "kernel" },  { 1,     "user" },  { 2,     "mail" },  { 3,     "daemon" },  { 4,     "auth" },  { 5,     "syslog" },  { 6,     "lpr" },  { 7,     "news" },  { 8,     "uucp" },  { 9,     "cron" },  { 10,    "authpriv" },  { 11,    "ftp" },  { 12,    "ntp" },  { 13,    "security" },  { 14,    "console" },  { 15,    "cron" },  { 16,    "local0" },  { 17,    "local1" },  { 18,    "local2" },  { 19,    "local3" },  { 20,    "local4" },  { 21,    "local5" },  { 22,    "local6" },  { 23,    "local7" },  { 0, NULL },};voidsyslog_print(register const u_char *pptr, register u_int len){    u_int16_t msg_off = 0;    u_int16_t pri = 0;    u_int16_t facility,severity;    /* extract decimal figures that are     * encapsulated within < > tags     * based on this decimal figure extract the     * severity and facility values     */    if (!TTEST2(*pptr, 1))        goto trunc;    if (*(pptr+msg_off) == '<') {        msg_off++;        if (!TTEST2(*(pptr+msg_off), 1))            goto trunc;        while ( *(pptr+msg_off) >= '0' &&                *(pptr+msg_off) <= '9' &&                msg_off <= SYSLOG_MAX_DIGITS) {            if (!TTEST2(*(pptr+msg_off), 1))                goto trunc;            pri = pri * 10 + (*(pptr+msg_off) - '0');            msg_off++;            if (!TTEST2(*(pptr+msg_off), 1))                goto trunc;        if (*(pptr+msg_off) == '>')            msg_off++;        }    } else {        printf("[|syslog]");        return;    }    facility = (pri & SYSLOG_FACILITY_MASK) >> 3;    severity = pri & SYSLOG_SEVERITY_MASK;        if (vflag < 1 )    {        printf("SYSLOG %s.%s, length: %u",               tok2str(syslog_facility_values, "unknown (%u)", facility),               tok2str(syslog_severity_values, "unknown (%u)", severity),               len);        return;    }           printf("SYSLOG, length: %u\n\tFacility %s (%u), Severity %s (%u)\n\tMsg: ",           len,           tok2str(syslog_facility_values, "unknown (%u)", facility),           facility,           tok2str(syslog_severity_values, "unknown (%u)", severity),           severity);    /* print the syslog text in verbose mode */    for (; msg_off < len; msg_off++) {        if (!TTEST2(*(pptr+msg_off), 1))            goto trunc;        safeputchar(*(pptr+msg_off));            }    if (vflag > 1) {        if(!print_unknown_data(pptr,"\n\t",len))            return;    }        return;trunc:        printf("[|syslog]");}