head	1.9;
access;
symbols;
locks; strict;
comment	@ * @;


1.9
date	2002.02.10.19.31.54;	author matt;	state Exp;
branches;
next	1.8;

1.8
date	2002.02.10.18.30.46;	author matt;	state Exp;
branches;
next	1.7;

1.7
date	2001.07.30.11.40.45;	author matt;	state Exp;
branches;
next	1.6;

1.6
date	2001.07.30.11.39.44;	author matt;	state Exp;
branches;
next	1.5;

1.5
date	2001.07.30.11.38.23;	author matt;	state Exp;
branches;
next	1.4;

1.4
date	2001.07.21.12.00.21;	author matt;	state Exp;
branches;
next	1.3;

1.3
date	2001.07.18.17.31.10;	author matt;	state Exp;
branches;
next	1.2;

1.2
date	2001.07.06.17.39.24;	author matt;	state Exp;
branches;
next	1.1;

1.1
date	2001.05.24.12.10.31;	author matt;	state Exp;
branches;
next	;


desc
@Log output to syslog and potentially a log file.
@


1.9
log
@Added cast on NULL check
@
text
@/*

 $Id: log.c,v 1.8 2002/02/10 18:30:46 matt Exp matt $

 See COPYRIGHT for the license

*/
#include <sys/param.h>
#include <unistd.h>
#include <stdarg.h>
#include <syslog.h>
#include <stdio.h>
#include <pwd.h>
#include "ssmtp.h"

extern char *prog_name;
extern int log_level;


void log_event(int priority, char *format, ...)
{
	char buf[(BUF_SZ + 1)];
	va_list ap;

	va_start(ap, format);
	(void)vsnprintf(buf, BUF_SZ, format, ap);
	va_end(ap);

#ifdef LOGFILE
	if((fp = fopen("/tmp/ssmtp.log", "a")) != (FILE *)NULL) {
		(void)fprintf(fp, "%s\n", buf);
		(void)fclose(fp);
	}
	else {
		(void)fprintf(stderr, "Can't write to /tmp/ssmtp.log\n");
	}
#endif

#if HAVE_SYSLOG_H
#if OLDSYSLOG
	openlog("sSMTP", LOG_PID);
#else
	openlog("sSMTP", LOG_PID, LOG_MAIL);
#endif
	syslog(priority, buf);
	closelog();
#endif
}

/*
dead_letter() -- save stdin to ~/dead.letter, if possible
*/
void dead_letter(void)
{
	char path[(MAXPATHLEN + 1)], buf[(BUF_SZ + 1)];
	struct passwd *pw;
	uid_t uid;
	FILE *fp;

	uid = getuid();
	pw = getpwuid(uid);

	if(isatty(fileno(stdin))) {
		if(log_level > 0) {
			log_event(LOG_ERR, "stdin is a TTY - not saving to %s/dead.letter, pw->pw_dir");
		}
		return;
	}

	if(pw == (struct passwd *)NULL) {
		/* Far to early to save things. */
		if(log_level > 0) {
			log_event(LOG_ERR, "No sender (can't happen), failing horribly");
		}
		return;
	}

	if(snprintf(path, BUF_SZ, "%s/dead.letter", pw->pw_dir) == -1) {
		/* can't use die() here since dead_letter() is called from die() */
		exit(1);
	}

	if((fp = fopen(path, "a")) == (FILE *)NULL) {
		/* Perhaps the person doesn't have a homedir... */
		if(log_level > 0) {
			log_event(LOG_ERR, "Can't open %s, failing horribly!", path);
		}
		return;
	}

	/* Make sure we start on a new line, */
	/* with a blank line separating messages. */
	(void)fprintf(fp, "\n\n");

	while(fgets(buf, sizeof(buf), stdin)) {
		(void)fputs(buf, fp);
	}

	if(fclose(fp) == -1) {
		if(log_level > 0) {
			log_event(LOG_ERR, "Can't close %s/dead.letter, possibly truncated", pw->pw_dir);
		}
	}
}

void die(char *format, ...)
{
	char buf[(BUF_SZ + 1)];
	va_list ap;

	va_start(ap, format);
	(void)vsnprintf(buf, BUF_SZ, format, ap);
	va_end(ap);

	(void)fprintf(stderr, "%s: %s\n", prog_name, buf);
	log_event(LOG_ERR, buf);

	/* Send message to dead.letter */
	(void)dead_letter();

	exit(1);
}

void paq(char *format, ...)
{
	va_list ap;

	va_start(ap, format);
	(void)vfprintf(stderr, format, ap);
	va_end(ap);

	exit(0);
}
@


1.8
log
@Renamed variable
@
text
@d3 1
a3 1
 $Id: logging.c,v 1.7 2001/07/30 11:40:45 matt Exp matt $
d30 1
a30 1
	if((fp = fopen("/tmp/ssmtp.log", "a")) != NULL) {
d70 1
a70 1
	if(pw == NULL) {
d83 1
a83 1
	if((fp = fopen(path, "a")) == NULL) {
@


1.7
log
@Header clean-up (again)
@
text
@d3 1
a3 1
 $Id: logging.c,v 1.6 2001/07/30 11:39:44 matt Exp matt $
d16 1
a16 1
extern char *ProgName;
d115 1
a115 1
	(void)fprintf(stderr, "%s: %s\n", ProgName, buf);
@


1.6
log
@Header clean-up
@
text
@d3 3
a5 1
 $Id: logging.c,v 1.5 2001/07/30 11:38:23 matt Exp matt $
@


1.5
log
@Code clean-up
@
text
@d2 3
a4 3
*
* $Id: logging.c,v 1.4 2001/07/21 12:00:21 matt Exp matt $
*
@


1.4
log
@Added new paq (print and quit) function
@
text
@d3 1
a3 1
* $Id: logging.c,v 1.3 2001/07/18 17:31:10 matt Exp matt $
d6 2
d9 1
d11 2
d14 2
a15 8
#if HAVE_SYSLOG_H
#include <syslog.h>
#else
#define LOG_ERR 0
#define LOG_INFO 0
#endif

#include "ssmtp.h"
d18 1
a18 1
void log_event(int syslog_code, char *format, ...)
d20 1
a20 1
	char buffer[(MAXLINE + 1)];
d24 1
a24 1
	(void)vsnprintf(buffer, MAXLINE, format, ap);
d29 2
a30 2
		fprintf(fp, "%s\n", buffer);
		fclose(fp);
d33 1
a33 1
		fprintf(stderr, "Can't write to /tmp/ssmtp.log\n");
d43 1
a43 1
	(void)syslog(syslog_code, buffer);
d48 55
a102 1
extern char *ProgName;
d106 1
a106 1
	char buffer[(MAXLINE + 1)];
d110 1
a110 1
	(void)vsnprintf(buffer, MAXLINE, format, ap);
d113 2
a114 2
	(void)fprintf(stderr, "%s: %s\n", ProgName, buffer);
	log_event(LOG_ERR, buffer);
d117 1
a117 1
	flush();
d127 1
a127 1
	(void)vprintf(format, ap);
a128 3

	/* Send message to dead.letter */
	flush();
@


1.3
log
@Removed malloc() and rely on fixed strings
@
text
@d3 1
a3 1
* $Id: logging.c,v 1.2 2001/07/06 17:39:24 matt Exp $
d67 14
@


1.2
log
@Small changes to syslog message
@
text
@d3 1
a3 1
* $Id: logging.c,v 1.1 2001/05/24 12:10:31 matt Exp matt $
d6 1
a7 3
#include <stdarg.h>
#include <assert.h>
#include <stdlib.h>
d10 1
a10 1
#include <syslog.h>		/* For logging. */
a18 5
extern char *ProgName ; /* Name of the program */

/*
 * log_event -- log something to syslog and the log file.
 */
d21 1
a21 4
#if HAVE_SYSLOG_H
	static int syslogOpen = NO;
#endif
	int msgsize = 1024;
a22 2
	char *buf;
	FILE *fp;
d25 1
a25 13
	if((fp = fopen("/dev/null","w")) != NULL) {
		assert(fp);
		msgsize = vfprintf(fp, format, ap);
		fclose(fp);
	}

	buf = (char *)malloc(((msgsize + 1) * sizeof(char *)));
	if(!buf) {
		perror("Cannot allocate memory");
		exit(1);
	}
	vsprintf(buf, format, ap);

d30 1
a30 2
		fprintf(fp, buf);
		putc('\n', fp);
a38 2
	if(syslogOpen == NO) {
		syslogOpen = YES;
d40 1
a40 1
		openlog("sSMTP", LOG_PID);
d42 1
a42 1
		openlog("sSMTP", LOG_PID, LOG_MAIL);
d44 1
a44 3
	}
	(void)syslog(syslog_code, buf);

a46 1
	free(buf);
d49 2
a50 4
/*
 * die -- say something and exit with a non-zero return code.
 *      Save the message on stdin in dead.letter.
 */
d53 1
d57 1
a57 5
	fprintf(stderr, "%s: ", ProgName);
	vfprintf(stderr, format, ap);
	putc('\n', stderr);
	flush();			/* Send message to dead.letter */
	log_event(LOG_ERR, format, ap);
d59 6
@


1.1
log
@Logging functions for sSMTP
@
text
@d3 1
a3 1
* $Id$
d67 1
a67 1
		openlog("sSMTP mail", LOG_PID);
d69 1
a69 1
		openlog("sSMTP mail", LOG_PID, LOG_MAIL);
@