/*
* Copyright (c) 1993, 1994, 1995, 1996, 1998
*      The Regents of the University of California.  All rights reserved.
*
* 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, (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, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* 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.
*/

#include <config.h>

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>

#ifdef _WIN32
#include <windows.h>
#else
#include <syslog.h>
#endif

#include "portability.h"

#include "log.h"

static int log_to_systemlog;
static int log_debug_messages;

static void rpcapd_vlog_stderr(log_priority,
   PCAP_FORMAT_STRING(const char *), va_list) PCAP_PRINTFLIKE(2, 0);

static void rpcapd_vlog_stderr(log_priority priority, const char *message, va_list ap)
{
       const char *tag;

       /*
        * Squelch warnings from compilers that *don't* assume that
        * priority always has a valid enum value and therefore don't
        * assume that we'll always go through one of the case arms.
        *
        * If we have a default case, compilers that *do* assume that
        * will then complain about the default case code being
        * unreachable.
        *
        * Damned if you do, damned if you don't.
        */
       tag = "";

       switch (priority) {

       case LOGPRIO_DEBUG:
               tag = "DEBUG: ";
               break;

       case LOGPRIO_INFO:
               tag = "";
               break;

       case LOGPRIO_WARNING:
               tag = "warning: ";
               break;

       case LOGPRIO_ERROR:
               tag = "error: ";
               break;
       }

       fprintf(stderr, "rpcapd: %s", tag);
       vfprintf(stderr, message, ap);
       putc('\n', stderr);
}

static void rpcapd_vlog_systemlog(log_priority,
   PCAP_FORMAT_STRING(const char *), va_list) PCAP_PRINTFLIKE(2, 0);

#ifdef _WIN32
#define MESSAGE_SUBKEY \
   "SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\rpcapd"

static void rpcapd_vlog_systemlog(log_priority priority, const char *message,
   va_list ap)
{
#if 0
       static int initialized = 0;
       HKEY hey_handle;
       static HANDLE log_handle;
       WORD eventlog_type;
       DWORD event_id;
       char msgbuf[1024];
       char *strings[1];

       if (!initialized) {
               /*
                * Register our message stuff in the Registry.
                *
                * First, create the registry key for us.  If the key
                * already exists, this succeeds and returns a handle
                * for it.
                */
               if (RegCreateKey(HKEY_LOCAL_MACHINE, MESSAGE_SUBKEY,
                   &key_handle) != ERROR_SUCCESS) {
                       /*
                        * Failed - give up and just log this message,
                        * and all subsequent messages, to the
                        * standard error.
                        */
                       log_to_systemlog = 0;
                       initialized = 1;
                       rpcapd_vlog_stderr(priority, message, ap);
                       return;
               }
               log_handle = RegisterEventSource(NULL, "rpcapd");
               initialized = 1;
       }

       switch (priority) {

       case LOGPRIO_DEBUG:
               //
               // XXX - what *should* we do about debug messages?
               //
               eventlog_type = EVENTLOG_INFORMATION_TYPE;
               event_id = RPCAPD_INFO_ID;
               break;

       case LOGPRIO_INFO:
               eventlog_type = EVENTLOG_INFORMATION_TYPE;
               event_id = RPCAPD_INFO_ID;
               break;

       case LOGPRIO_WARNING:
               eventlog_type = EVENTLOG_WARNING_TYPE;
               event_id = RPCAPD_WARNING_ID;
               break;

       case LOGPRIO_ERROR:
               eventlog_type = EVENTLOG_ERROR_TYPE;
               event_id = RPCAPD_ERROR_ID;
               break;

       default:
               /* Don't do this. */
               return;
       }

       vsprintf(msgbuf, message, ap);

       strings[0] = msgbuf;
       /*
        * If this fails, how are we going to report it?
        */
       (void) ReportEvent(log_handle, eventlog_type, 0, event_id, NULL, 1, 0,
           strings, NULL);
#else
       rpcapd_vlog_stderr(priority, message, ap);
#endif
}
#else
static void rpcapd_vlog_systemlog(log_priority priority, const char *message,
   va_list ap)
{
       static int initialized = 0;
       int syslog_priority;

       if (!initialized) {
               //
               // Open the log.
               //
               openlog("rpcapd", LOG_PID, LOG_DAEMON);
               initialized = 1;
       }

       switch (priority) {

       case LOGPRIO_DEBUG:
               syslog_priority = LOG_DEBUG;
               break;

       case LOGPRIO_INFO:
               syslog_priority = LOG_INFO;
               break;

       case LOGPRIO_WARNING:
               syslog_priority = LOG_WARNING;
               break;

       case LOGPRIO_ERROR:
               syslog_priority = LOG_ERR;
               break;

       default:
               /* Don't do this. */
               return;
       }

#ifdef HAVE_VSYSLOG
       vsyslog(syslog_priority, message, ap);
#else
       /*
        * Thanks, IBM, for not providing vsyslog() in AIX!
        *
        * They also warn that the syslog functions shouldn't
        * be used in multithreaded programs, but the only thing
        * obvious that seems to make the syslog_r functions
        * better is that they have an additional argument
        * that points to the information that's static to
        * the syslog code in non-thread-safe versions.  Most
        * of that data is set by openlog(); since we already
        * do an openlog before doing logging, and don't
        * change that data afterwards, I suspect that, in
        * practice, the regular syslog routines are OK for
        * us (especially given that we'd end up having one
        * static struct syslog_data anyway, which means we'd
        * just be like the non-thread-safe version).
        */
       char logbuf[1024+1];

       vsnprintf(logbuf, sizeof logbuf, message, ap);
       syslog(syslog_priority, "%s", logbuf);
#endif
}
#endif

void rpcapd_log_set(int log_to_systemlog_arg, int log_debug_messages_arg)
{
       log_debug_messages = log_debug_messages_arg;
       log_to_systemlog = log_to_systemlog_arg;
}

void rpcapd_log(log_priority priority, const char *message, ...)
{
       va_list ap;

       if (priority != LOGPRIO_DEBUG || log_debug_messages) {
               va_start(ap, message);
               if (log_to_systemlog)
               {
                       rpcapd_vlog_systemlog(priority, message, ap);
               }
               else
               {
                       rpcapd_vlog_stderr(priority, message, ap);
               }
               va_end(ap);
       }
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.