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261 lines
6.2 KiB
261 lines
6.2 KiB
/*
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* Copyright (c) 1993, 1994, 1995, 1996, 1998
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include <syslog.h>
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#endif
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#include "portability.h"
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#include "log.h"
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static int log_to_systemlog;
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static int log_debug_messages;
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static void rpcapd_vlog_stderr(log_priority,
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PCAP_FORMAT_STRING(const char *), va_list) PCAP_PRINTFLIKE(2, 0);
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static void rpcapd_vlog_stderr(log_priority priority, const char *message, va_list ap)
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{
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const char *tag;
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/*
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* Squelch warnings from compilers that *don't* assume that
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* priority always has a valid enum value and therefore don't
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* assume that we'll always go through one of the case arms.
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*
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* If we have a default case, compilers that *do* assume that
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* will then complain about the default case code being
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* unreachable.
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*
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* Damned if you do, damned if you don't.
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*/
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tag = "";
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switch (priority) {
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case LOGPRIO_DEBUG:
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tag = "DEBUG: ";
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break;
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case LOGPRIO_INFO:
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tag = "";
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break;
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case LOGPRIO_WARNING:
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tag = "warning: ";
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break;
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case LOGPRIO_ERROR:
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tag = "error: ";
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break;
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}
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fprintf(stderr, "rpcapd: %s", tag);
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vfprintf(stderr, message, ap);
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putc('\n', stderr);
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}
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static void rpcapd_vlog_systemlog(log_priority,
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PCAP_FORMAT_STRING(const char *), va_list) PCAP_PRINTFLIKE(2, 0);
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#ifdef _WIN32
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#define MESSAGE_SUBKEY \
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"SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\rpcapd"
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static void rpcapd_vlog_systemlog(log_priority priority, const char *message,
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va_list ap)
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{
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#if 0
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static int initialized = 0;
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HKEY hey_handle;
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static HANDLE log_handle;
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WORD eventlog_type;
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DWORD event_id;
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char msgbuf[1024];
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char *strings[1];
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if (!initialized) {
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/*
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* Register our message stuff in the Registry.
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*
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* First, create the registry key for us. If the key
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* already exists, this succeeds and returns a handle
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* for it.
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*/
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if (RegCreateKey(HKEY_LOCAL_MACHINE, MESSAGE_SUBKEY,
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&key_handle) != ERROR_SUCCESS) {
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/*
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* Failed - give up and just log this message,
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* and all subsequent messages, to the
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* standard error.
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*/
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log_to_systemlog = 0;
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initialized = 1;
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rpcapd_vlog_stderr(priority, message, ap);
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return;
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}
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log_handle = RegisterEventSource(NULL, "rpcapd");
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initialized = 1;
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}
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switch (priority) {
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case LOGPRIO_DEBUG:
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//
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// XXX - what *should* we do about debug messages?
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//
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eventlog_type = EVENTLOG_INFORMATION_TYPE;
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event_id = RPCAPD_INFO_ID;
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break;
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case LOGPRIO_INFO:
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eventlog_type = EVENTLOG_INFORMATION_TYPE;
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event_id = RPCAPD_INFO_ID;
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break;
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case LOGPRIO_WARNING:
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eventlog_type = EVENTLOG_WARNING_TYPE;
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event_id = RPCAPD_WARNING_ID;
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break;
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case LOGPRIO_ERROR:
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eventlog_type = EVENTLOG_ERROR_TYPE;
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event_id = RPCAPD_ERROR_ID;
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break;
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default:
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/* Don't do this. */
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return;
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}
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vsprintf(msgbuf, message, ap);
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strings[0] = msgbuf;
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/*
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* If this fails, how are we going to report it?
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*/
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(void) ReportEvent(log_handle, eventlog_type, 0, event_id, NULL, 1, 0,
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strings, NULL);
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#else
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rpcapd_vlog_stderr(priority, message, ap);
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#endif
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}
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#else
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static void rpcapd_vlog_systemlog(log_priority priority, const char *message,
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va_list ap)
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{
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static int initialized = 0;
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int syslog_priority;
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if (!initialized) {
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//
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// Open the log.
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//
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openlog("rpcapd", LOG_PID, LOG_DAEMON);
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initialized = 1;
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}
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switch (priority) {
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case LOGPRIO_DEBUG:
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syslog_priority = LOG_DEBUG;
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break;
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case LOGPRIO_INFO:
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syslog_priority = LOG_INFO;
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break;
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case LOGPRIO_WARNING:
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syslog_priority = LOG_WARNING;
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break;
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case LOGPRIO_ERROR:
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syslog_priority = LOG_ERR;
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break;
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default:
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/* Don't do this. */
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return;
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}
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#ifdef HAVE_VSYSLOG
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vsyslog(syslog_priority, message, ap);
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#else
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/*
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* Thanks, IBM, for not providing vsyslog() in AIX!
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*
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* They also warn that the syslog functions shouldn't
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* be used in multithreaded programs, but the only thing
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* obvious that seems to make the syslog_r functions
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* better is that they have an additional argument
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* that points to the information that's static to
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* the syslog code in non-thread-safe versions. Most
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* of that data is set by openlog(); since we already
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* do an openlog before doing logging, and don't
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* change that data afterwards, I suspect that, in
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* practice, the regular syslog routines are OK for
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* us (especially given that we'd end up having one
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* static struct syslog_data anyway, which means we'd
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* just be like the non-thread-safe version).
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*/
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char logbuf[1024+1];
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vsnprintf(logbuf, sizeof logbuf, message, ap);
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syslog(syslog_priority, "%s", logbuf);
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#endif
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}
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#endif
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void rpcapd_log_set(int log_to_systemlog_arg, int log_debug_messages_arg)
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{
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log_debug_messages = log_debug_messages_arg;
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log_to_systemlog = log_to_systemlog_arg;
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}
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void rpcapd_log(log_priority priority, const char *message, ...)
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{
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va_list ap;
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if (priority != LOGPRIO_DEBUG || log_debug_messages) {
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va_start(ap, message);
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if (log_to_systemlog)
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{
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rpcapd_vlog_systemlog(priority, message, ap);
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}
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else
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{
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rpcapd_vlog_stderr(priority, message, ap);
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}
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va_end(ap);
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}
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}
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