241 lines
5.9 KiB
C
241 lines
5.9 KiB
C
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/*
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* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* 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 the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Kungliga Tekniska
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* H<EFBFBD>gskolan and its contributors.
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*
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* 4. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb_locl.h"
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#include <klog.h>
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RCSID("$Id: logging.c,v 1.14 1997/05/11 09:01:40 assar Exp $");
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struct krb_log_facility {
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char filename[MaxPathLen];
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FILE *file;
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krb_log_func_t func;
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};
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int
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krb_vlogger(struct krb_log_facility *f, const char *format, va_list args)
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{
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FILE *file = NULL;
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int ret;
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if (f->file != NULL)
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file = f->file;
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else if (f->filename && f->filename[0])
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file = fopen(f->filename, "a");
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ret = f->func(file, format, args);
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if (file != f->file)
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fclose(file);
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return ret;
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}
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int
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krb_logger(struct krb_log_facility *f, const char *format, ...)
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{
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va_list args;
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int ret;
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va_start(args, format);
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ret = krb_vlogger(f, format, args);
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va_end(args);
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return ret;
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}
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/*
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* If FILE * is given log to it, otherwise, log to filename. When
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* given a file name the file is opened and closed for each log
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* record.
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*/
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int
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krb_openlog(struct krb_log_facility *f,
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char *filename,
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FILE *file,
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krb_log_func_t func)
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{
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strcpy(f->filename, filename);
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f->file = file;
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f->func = func;
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return KSUCCESS;
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}
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/* ------------------------------------------------------------
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Compatibility functions from warning.c
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------------------------------------------------------------ */
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static int
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log_tty(FILE *f, const char *format, va_list args)
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{
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if (f != NULL && isatty(fileno(f)))
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vfprintf(f, format, args);
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return KSUCCESS;
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}
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/* stderr */
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static struct krb_log_facility std_log = { "/dev/tty", NULL, log_tty };
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static void
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init_std_log ()
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{
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static int done = 0;
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if (!done) {
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std_log.file = stderr;
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done = 1;
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}
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}
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/*
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*
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*/
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void
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krb_set_warnfn (krb_warnfn_t newfunc)
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{
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init_std_log ();
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std_log.func = newfunc;
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}
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/*
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*
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*/
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krb_warnfn_t
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krb_get_warnfn (void)
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{
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init_std_log ();
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return std_log.func;
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}
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/*
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* Log warnings to stderr if it's a tty.
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*/
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void
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krb_warning (const char *format, ...)
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{
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va_list args;
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init_std_log ();
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va_start(args, format);
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krb_vlogger(&std_log, format, args);
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va_end(args);
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}
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/* ------------------------------------------------------------
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Compatibility functions from klog.c and log.c
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------------------------------------------------------------ */
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/*
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* Used by kerberos and kadmind daemons and in libkrb (rd_req.c).
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*
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* By default they log to the kerberos server log-file (KRBLOG) to be
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* backwards compatible.
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*/
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static int
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log_with_timestamp_and_nl(FILE *file, const char *format, va_list args)
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{
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time_t now;
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if(file == NULL)
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return KFAILURE;
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time(&now);
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fputs(krb_stime(&now), file);
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fputs(": ", file);
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vfprintf(file, format, args);
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fputs("\n", file);
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fflush(file);
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return KSUCCESS;
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}
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static struct krb_log_facility
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file_log = { KRBLOG, NULL, log_with_timestamp_and_nl };
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/*
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* kset_logfile() changes the name of the file to which
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* messages are logged. If kset_logfile() is not called,
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* the logfile defaults to KRBLOG, defined in "krb.h".
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*/
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void
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kset_logfile(char *filename)
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{
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krb_openlog(&file_log, filename, NULL, log_with_timestamp_and_nl);
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}
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/*
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* krb_log() and klog() is used to add entries to the logfile.
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*
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* The log entry consists of a timestamp and the given arguments
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* printed according to the given "format" string.
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*
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* The log file is opened and closed for each log entry.
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*
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* If the given log type "type" is unknown, or if the log file
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* cannot be opened, no entry is made to the log file.
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*
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* CHANGE: the type is always ignored
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*
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* The return value of klog() is always a pointer to the formatted log
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* text string "logtxt".
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*/
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/* Used in kerberos.c only. */
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char *
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klog(int type, const char *format, ...)
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{
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static char logtxt[1024];
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va_list ap;
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va_start(ap, format);
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vsnprintf(logtxt, sizeof(logtxt), format, ap);
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va_end(ap);
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krb_logger(&file_log, "%s", logtxt);
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return logtxt;
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}
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/* Used in kadmind and rd_req.c */
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void
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krb_log(const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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krb_vlogger(&file_log, format, args);
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va_end(args);
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}
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