freebsd-dev/crypto/kerberosIV/lib/krb/logging.c

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/*
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H<EFBFBD>gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 Kungliga Tekniska
* H<EFBFBD>gskolan and its contributors.
*
* 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 "krb_locl.h"
#include <klog.h>
RCSID("$Id: logging.c,v 1.14 1997/05/11 09:01:40 assar Exp $");
struct krb_log_facility {
char filename[MaxPathLen];
FILE *file;
krb_log_func_t func;
};
int
krb_vlogger(struct krb_log_facility *f, const char *format, va_list args)
{
FILE *file = NULL;
int ret;
if (f->file != NULL)
file = f->file;
else if (f->filename && f->filename[0])
file = fopen(f->filename, "a");
ret = f->func(file, format, args);
if (file != f->file)
fclose(file);
return ret;
}
int
krb_logger(struct krb_log_facility *f, const char *format, ...)
{
va_list args;
int ret;
va_start(args, format);
ret = krb_vlogger(f, format, args);
va_end(args);
return ret;
}
/*
* If FILE * is given log to it, otherwise, log to filename. When
* given a file name the file is opened and closed for each log
* record.
*/
int
krb_openlog(struct krb_log_facility *f,
char *filename,
FILE *file,
krb_log_func_t func)
{
strcpy(f->filename, filename);
f->file = file;
f->func = func;
return KSUCCESS;
}
/* ------------------------------------------------------------
Compatibility functions from warning.c
------------------------------------------------------------ */
static int
log_tty(FILE *f, const char *format, va_list args)
{
if (f != NULL && isatty(fileno(f)))
vfprintf(f, format, args);
return KSUCCESS;
}
/* stderr */
static struct krb_log_facility std_log = { "/dev/tty", NULL, log_tty };
static void
init_std_log ()
{
static int done = 0;
if (!done) {
std_log.file = stderr;
done = 1;
}
}
/*
*
*/
void
krb_set_warnfn (krb_warnfn_t newfunc)
{
init_std_log ();
std_log.func = newfunc;
}
/*
*
*/
krb_warnfn_t
krb_get_warnfn (void)
{
init_std_log ();
return std_log.func;
}
/*
* Log warnings to stderr if it's a tty.
*/
void
krb_warning (const char *format, ...)
{
va_list args;
init_std_log ();
va_start(args, format);
krb_vlogger(&std_log, format, args);
va_end(args);
}
/* ------------------------------------------------------------
Compatibility functions from klog.c and log.c
------------------------------------------------------------ */
/*
* Used by kerberos and kadmind daemons and in libkrb (rd_req.c).
*
* By default they log to the kerberos server log-file (KRBLOG) to be
* backwards compatible.
*/
static int
log_with_timestamp_and_nl(FILE *file, const char *format, va_list args)
{
time_t now;
if(file == NULL)
return KFAILURE;
time(&now);
fputs(krb_stime(&now), file);
fputs(": ", file);
vfprintf(file, format, args);
fputs("\n", file);
fflush(file);
return KSUCCESS;
}
static struct krb_log_facility
file_log = { KRBLOG, NULL, log_with_timestamp_and_nl };
/*
* kset_logfile() changes the name of the file to which
* messages are logged. If kset_logfile() is not called,
* the logfile defaults to KRBLOG, defined in "krb.h".
*/
void
kset_logfile(char *filename)
{
krb_openlog(&file_log, filename, NULL, log_with_timestamp_and_nl);
}
/*
* krb_log() and klog() is used to add entries to the logfile.
*
* The log entry consists of a timestamp and the given arguments
* printed according to the given "format" string.
*
* The log file is opened and closed for each log entry.
*
* If the given log type "type" is unknown, or if the log file
* cannot be opened, no entry is made to the log file.
*
* CHANGE: the type is always ignored
*
* The return value of klog() is always a pointer to the formatted log
* text string "logtxt".
*/
/* Used in kerberos.c only. */
char *
klog(int type, const char *format, ...)
{
static char logtxt[1024];
va_list ap;
va_start(ap, format);
vsnprintf(logtxt, sizeof(logtxt), format, ap);
va_end(ap);
krb_logger(&file_log, "%s", logtxt);
return logtxt;
}
/* Used in kadmind and rd_req.c */
void
krb_log(const char *format, ...)
{
va_list args;
va_start(args, format);
krb_vlogger(&file_log, format, args);
va_end(args);
}