[apple/libc.git] / gen / oldsyslog.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1993
 *	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 the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/uio.h>
#include <sys/un.h>
#include <netdb.h>

#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

#include <crt_externs.h>
 
#ifdef BUILDING_VARIANT
__private_extern__ int	_sl_LogFile;		/* fd for log */
__private_extern__ int	_sl_connected;		/* have done connect */
__private_extern__ int	_sl_LogStat;		/* status bits, set by openlog() */
__private_extern__ const char *_sl_LogTag;	/* string to tag the entry with */
__private_extern__ int	_sl_LogFacility;	/* default facility code */
__private_extern__ int	_sl_LogMask;		/* mask of priorities to be logged */
#else /* !BUILDING_VARIANT */
__private_extern__ int	_sl_LogFile = -1;		/* fd for log */
__private_extern__ int	_sl_connected = 0;		/* have done connect */
__private_extern__ int	_sl_LogStat = 0;		/* status bits, set by openlog() */
__private_extern__ const char *_sl_LogTag = NULL;	/* string to tag the entry with */
__private_extern__ int	_sl_LogFacility = LOG_USER;	/* default facility code */
__private_extern__ int	_sl_LogMask = 0xff;		/* mask of priorities to be logged */
#endif /* BUILDING_VARIANT */

/*
 * syslog, vsyslog --
 *	print message on log file; output is intended for syslogd(8).
 */
void
#ifdef __STDC__
syslog(int pri, const char *fmt, ...)
#else
syslog(pri, fmt, va_alist)
	int pri;
	char *fmt;
	va_dcl
#endif
{
	va_list ap;

#ifdef __STDC__
	va_start(ap, fmt);
#else
	va_start(ap);
#endif
	vsyslog(pri, fmt, ap);
	va_end(ap);
}

void
vsyslog(pri, fmt, ap)
	int pri;
	register const char *fmt;
	va_list ap;
{
	register int cnt;
	register char ch, *p, *t;
	time_t now;
	int fd, saved_errno;
#define	TBUF_LEN	2048
#define	FMT_LEN		1024
	char *stdp, tbuf[TBUF_LEN], fmt_cpy[FMT_LEN];
	int tbuf_left, fmt_left, prlen;

#define	INTERNALLOG	LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
	/* Check for invalid bits. */
	if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
		syslog(INTERNALLOG,
		    "syslog: unknown facility/priority: %x", pri);
		pri &= LOG_PRIMASK|LOG_FACMASK;
	}

	/* Check priority against setlogmask values. */
	if (!(LOG_MASK(LOG_PRI(pri)) & _sl_LogMask))
		return;

	saved_errno = errno;

	/* Set default facility if none specified. */
	if ((pri & LOG_FACMASK) == 0)
		pri |= _sl_LogFacility;

	/* Build the message. */
	
	/*
 	 * Although it's tempting, we can't ignore the possibility of
	 * overflowing the buffer when assembling the "fixed" portion
	 * of the message.  Strftime's "%h" directive expands to the
	 * locale's abbreviated month name, but if the user has the
	 * ability to construct to his own locale files, it may be
	 * arbitrarily long.
	 */
	(void)time(&now);

	p = tbuf;  
	tbuf_left = TBUF_LEN;
	
#define	DEC()	\
	do {					\
		if (prlen >= tbuf_left)		\
			prlen = tbuf_left - 1;	\
		p += prlen;			\
		tbuf_left -= prlen;		\
	} while (0)

	prlen = snprintf(p, tbuf_left, "<%d>", pri);
	DEC();

	prlen = strftime(p, tbuf_left, "%h %e %T ", localtime(&now));
	DEC();

	if (_sl_LogStat & LOG_PERROR)
		stdp = p;
	if (_sl_LogTag == NULL)
		_sl_LogTag = *(*_NSGetArgv());
	if (_sl_LogTag != NULL) {
		prlen = snprintf(p, tbuf_left, "%s", _sl_LogTag);
		DEC();
	}
	if (_sl_LogStat & LOG_PID) {
		prlen = snprintf(p, tbuf_left, "[%d]", getpid());
		DEC();
	}
	if (_sl_LogTag != NULL) {
		if (tbuf_left > 1) {
			*p++ = ':';
			tbuf_left--;
		}
		if (tbuf_left > 1) {
			*p++ = ' ';
			tbuf_left--;
		}
	}

	/* 
	 * We wouldn't need this mess if printf handled %m, or if 
	 * strerror() had been invented before syslog().
	 */
	for (t = fmt_cpy, fmt_left = FMT_LEN; (ch = *fmt); ++fmt) {
		if (ch == '%' && fmt[1] == 'm') {
			++fmt;
			prlen = snprintf(t, fmt_left, "%s",
			    strerror(saved_errno));
			if (prlen >= fmt_left)
				prlen = fmt_left - 1;
			t += prlen;
			fmt_left -= prlen;
		} else {
			if (fmt_left > 1) {
				*t++ = ch;
				fmt_left--;
			}
		}
	}
	*t = '\0';

	prlen = vsnprintf(p, tbuf_left, fmt_cpy, ap);
	DEC();
	cnt = p - tbuf;

	/* Output to stderr if requested. */
	if (_sl_LogStat & LOG_PERROR) {
		struct iovec iov[2];

		iov[0].iov_base = stdp;
		iov[0].iov_len = cnt - (stdp - tbuf);
		iov[1].iov_base = "\n";
		iov[1].iov_len = 1;
		(void)writev(STDERR_FILENO, iov, 2);
	}

	/* Get connected, output the message to the local logger. */
	if (!_sl_connected)
		openlog(_sl_LogTag, _sl_LogStat | LOG_NDELAY, 0);
	if (send(_sl_LogFile, tbuf, cnt, 0) >= 0)
		return;

	/*
	 * Output the message to the console; don't worry about blocking,
	 * if console blocks everything will.  Make sure the error reported
	 * is the one from the syslogd failure.
	 */
	if (_sl_LogStat & LOG_CONS &&
	    (fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0) {
		struct iovec iov[2];
		
		p = strchr(tbuf, '>') + 1;
		iov[0].iov_base = p;
		iov[0].iov_len = cnt - (p - tbuf);
		iov[1].iov_base = "\r\n";
		iov[1].iov_len = 2;
		(void)writev(fd, iov, 2);
		(void)close(fd);
	}
}

#ifndef BUILDING_VARIANT

static struct sockaddr_un SyslogAddr;	/* AF_UNIX address of local logger */

void
openlog(ident, logstat, logfac)
	const char *ident;
	int logstat, logfac;
{
	if (ident != NULL)
		_sl_LogTag = ident;
	_sl_LogStat = logstat;
	if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
		_sl_LogFacility = logfac;

	if (_sl_LogFile == -1) {
		SyslogAddr.sun_family = AF_UNIX;
		(void)strncpy(SyslogAddr.sun_path, _PATH_LOG,
		    sizeof(SyslogAddr.sun_path));
		if (_sl_LogStat & LOG_NDELAY) {
			if ((_sl_LogFile = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
				return;
			(void)fcntl(_sl_LogFile, F_SETFD, 1);
		}
	}
	if (_sl_LogFile != -1 && !_sl_connected)
		if (connect(_sl_LogFile, (struct sockaddr *)&SyslogAddr, sizeof(SyslogAddr)) == -1) {
			(void)close(_sl_LogFile);
			_sl_LogFile = -1;
		} else
			_sl_connected = 1;
}

void
closelog()
{
	(void)close(_sl_LogFile);
	_sl_LogFile = -1;
	_sl_connected = 0;
}

/* setlogmask -- set the log mask level */
int
setlogmask(pmask)
	int pmask;
{
	int omask;

	omask = _sl_LogMask;
	if (pmask != 0)
		_sl_LogMask = pmask;
	return (omask);
}

#endif /* !BUILDING_VARIANT */
Commit	Line	Data
3d9156a7 A	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
	12	*
	13	* The Original Code and all software distributed under the License are
	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23	/*
	24	* Copyright (c) 1993
	25	* The Regents of the University of California. All rights reserved.
	26	*
	27	* Redistribution and use in source and binary forms, with or without
	28	* modification, are permitted provided that the following conditions
	29	* are met:
	30	* 1. Redistributions of source code must retain the above copyright
	31	* notice, this list of conditions and the following disclaimer.
	32	* 2. Redistributions in binary form must reproduce the above copyright
	33	* notice, this list of conditions and the following disclaimer in the
	34	* documentation and/or other materials provided with the distribution.
	35	* 3. All advertising materials mentioning features or use of this software
	36	* must display the following acknowledgement:
	37	* This product includes software developed by the University of
	38	* California, Berkeley and its contributors.
	39	* 4. Neither the name of the University nor the names of its contributors
	40	* may be used to endorse or promote products derived from this software
	41	* without specific prior written permission.
	42	*
	43	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	44	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	45	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	46	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	47	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	48	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	49	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	50	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	51	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	52	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	53	* SUCH DAMAGE.
	54	*/
	55
	56	#include <sys/types.h>
	57	#include <sys/socket.h>
	58	#include <sys/syslog.h>
	59	#include <sys/uio.h>
	60	#include <sys/un.h>
	61	#include <netdb.h>
	62
	63	#include <errno.h>
	64	#include <fcntl.h>
65	#include <paths.h>
66	#include <stdio.h>
67	#include <string.h>
68	#include <time.h>
69	#include <unistd.h>
70
71	#ifdef __STDC__
72	#include <stdarg.h>
73	#else
74	#include <varargs.h>
75	#endif
76
77	#include <crt_externs.h>
78
79	#ifdef BUILDING_VARIANT
80	__private_extern__ int _sl_LogFile; /* fd for log */
81	__private_extern__ int _sl_connected; /* have done connect */
82	__private_extern__ int _sl_LogStat; /* status bits, set by openlog() */
83	__private_extern__ const char _sl_LogTag; / string to tag the entry with */
84	__private_extern__ int _sl_LogFacility; /* default facility code */
85	__private_extern__ int _sl_LogMask; /* mask of priorities to be logged */
86	#else /* !BUILDING_VARIANT */
87	__private_extern__ int _sl_LogFile = -1; /* fd for log */
88	__private_extern__ int _sl_connected = 0; /* have done connect */
89	__private_extern__ int _sl_LogStat = 0; /* status bits, set by openlog() */
90	__private_extern__ const char _sl_LogTag = NULL; / string to tag the entry with */
91	__private_extern__ int _sl_LogFacility = LOG_USER; /* default facility code */
92	__private_extern__ int _sl_LogMask = 0xff; /* mask of priorities to be logged */
93	#endif /* BUILDING_VARIANT */
94
95	/*
96	* syslog, vsyslog --
97	* print message on log file; output is intended for syslogd(8).
98	*/
99	void
100	#ifdef __STDC__
101	syslog(int pri, const char *fmt, ...)
102	#else
103	syslog(pri, fmt, va_alist)
104	int pri;
105	char *fmt;
106	va_dcl
107	#endif
108	{
109	va_list ap;
110
111	#ifdef __STDC__
112	va_start(ap, fmt);
113	#else
114	va_start(ap);
115	#endif
116	vsyslog(pri, fmt, ap);
117	va_end(ap);
118	}
119
120	void
121	vsyslog(pri, fmt, ap)
122	int pri;
123	register const char *fmt;
124	va_list ap;
125	{
126	register int cnt;
127	register char ch, p, t;
128	time_t now;
129	int fd, saved_errno;
130	#define TBUF_LEN 2048
131	#define FMT_LEN 1024
132	char *stdp, tbuf[TBUF_LEN], fmt_cpy[FMT_LEN];
133	int tbuf_left, fmt_left, prlen;
134
135	#define INTERNALLOG LOG_ERR\|LOG_CONS\|LOG_PERROR\|LOG_PID
136	/* Check for invalid bits. */
137	if (pri & ~(LOG_PRIMASK\|LOG_FACMASK)) {
138	syslog(INTERNALLOG,
139	"syslog: unknown facility/priority: %x", pri);
140	pri &= LOG_PRIMASK\|LOG_FACMASK;
141	}
142
143	/* Check priority against setlogmask values. */
144	if (!(LOG_MASK(LOG_PRI(pri)) & _sl_LogMask))
145	return;
146
147	saved_errno = errno;
148
149	/* Set default facility if none specified. */
150	if ((pri & LOG_FACMASK) == 0)
151	pri \|= _sl_LogFacility;
152
153	/* Build the message. */
154
155	/*
156	* Although it's tempting, we can't ignore the possibility of
157	* overflowing the buffer when assembling the "fixed" portion
158	* of the message. Strftime's "%h" directive expands to the
159	* locale's abbreviated month name, but if the user has the
160	* ability to construct to his own locale files, it may be
161	* arbitrarily long.
162	*/
163	(void)time(&now);
164
165	p = tbuf;
166	tbuf_left = TBUF_LEN;
167
168	#define DEC() \
169	do { \
170	if (prlen >= tbuf_left) \
171	prlen = tbuf_left - 1; \
172	p += prlen; \
173	tbuf_left -= prlen; \
174	} while (0)
175
176	prlen = snprintf(p, tbuf_left, "<%d>", pri);
177	DEC();
178
179	prlen = strftime(p, tbuf_left, "%h %e %T ", localtime(&now));
180	DEC();
181
182	if (_sl_LogStat & LOG_PERROR)
183	stdp = p;
184	if (_sl_LogTag == NULL)
185	_sl_LogTag = (_NSGetArgv());
186	if (_sl_LogTag != NULL) {
187	prlen = snprintf(p, tbuf_left, "%s", _sl_LogTag);
188	DEC();
189	}
190	if (_sl_LogStat & LOG_PID) {
191	prlen = snprintf(p, tbuf_left, "[%d]", getpid());
192	DEC();
193	}
194	if (_sl_LogTag != NULL) {
195	if (tbuf_left > 1) {
196	*p++ = ':';
197	tbuf_left--;
198	}
199	if (tbuf_left > 1) {
200	*p++ = ' ';
201	tbuf_left--;
202	}
203	}
204
205	/*
206	* We wouldn't need this mess if printf handled %m, or if
207	* strerror() had been invented before syslog().
208	*/
209	for (t = fmt_cpy, fmt_left = FMT_LEN; (ch = *fmt); ++fmt) {
210	if (ch == '%' && fmt[1] == 'm') {
211	++fmt;
212	prlen = snprintf(t, fmt_left, "%s",
213	strerror(saved_errno));
214	if (prlen >= fmt_left)
215	prlen = fmt_left - 1;
216	t += prlen;
217	fmt_left -= prlen;
218	} else {
219	if (fmt_left > 1) {
220	*t++ = ch;
221	fmt_left--;
222	}
223	}
224	}
225	*t = '\0';
226
227	prlen = vsnprintf(p, tbuf_left, fmt_cpy, ap);
228	DEC();
229	cnt = p - tbuf;
230
231	/* Output to stderr if requested. */
232	if (_sl_LogStat & LOG_PERROR) {
233	struct iovec iov[2];
234
235	iov[0].iov_base = stdp;
236	iov[0].iov_len = cnt - (stdp - tbuf);
237	iov[1].iov_base = "\n";
238	iov[1].iov_len = 1;
239	(void)writev(STDERR_FILENO, iov, 2);
240	}
241
242	/* Get connected, output the message to the local logger. */
243	if (!_sl_connected)
244	openlog(_sl_LogTag, _sl_LogStat \| LOG_NDELAY, 0);
245	if (send(_sl_LogFile, tbuf, cnt, 0) >= 0)
246	return;
247
248	/*
249	* Output the message to the console; don't worry about blocking,
250	* if console blocks everything will. Make sure the error reported
251	* is the one from the syslogd failure.
252	*/
253	if (_sl_LogStat & LOG_CONS &&
254	(fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0) {
255	struct iovec iov[2];
256
257	p = strchr(tbuf, '>') + 1;
258	iov[0].iov_base = p;
259	iov[0].iov_len = cnt - (p - tbuf);
260	iov[1].iov_base = "\r\n";
261	iov[1].iov_len = 2;
262	(void)writev(fd, iov, 2);
263	(void)close(fd);
264	}
265	}
266
267	#ifndef BUILDING_VARIANT
268
269	static struct sockaddr_un SyslogAddr; /* AF_UNIX address of local logger */
270
271	void
272	openlog(ident, logstat, logfac)
273	const char *ident;
274	int logstat, logfac;
275	{
276	if (ident != NULL)
277	_sl_LogTag = ident;
278	_sl_LogStat = logstat;
279	if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
280	_sl_LogFacility = logfac;
281
282	if (_sl_LogFile == -1) {
283	SyslogAddr.sun_family = AF_UNIX;
284	(void)strncpy(SyslogAddr.sun_path, _PATH_LOG,
285	sizeof(SyslogAddr.sun_path));
286	if (_sl_LogStat & LOG_NDELAY) {
287	if ((_sl_LogFile = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
288	return;
289	(void)fcntl(_sl_LogFile, F_SETFD, 1);
290	}
291	}
292	if (_sl_LogFile != -1 && !_sl_connected)
293	if (connect(_sl_LogFile, (struct sockaddr *)&SyslogAddr, sizeof(SyslogAddr)) == -1) {
294	(void)close(_sl_LogFile);
295	_sl_LogFile = -1;
296	} else
297	_sl_connected = 1;
298	}
299
300	void
301	closelog()
302	{
303	(void)close(_sl_LogFile);
304	_sl_LogFile = -1;
305	_sl_connected = 0;
306	}
307
308	/* setlogmask -- set the log mask level */
309	int
310	setlogmask(pmask)
311	int pmask;
312	{
313	int omask;
314
315	omask = _sl_LogMask;
316	if (pmask != 0)
317	_sl_LogMask = pmask;
318	return (omask);
319	}
320
321	#endif /* !BUILDING_VARIANT */