freebsd-dev/gnu/libexec/uucp/common_sources/log.c
1997-02-22 15:28:58 +00:00

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/* log.c
Routines to add entries to the log files.
Copyright (C) 1991, 1992, 1993, 1994, 1995 Ian Lance Taylor
This file is part of the Taylor UUCP package.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The author of the program may be contacted at ian@airs.com or
c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
*/
#include "uucp.h"
#if USE_RCS_ID
const char log_rcsid[] = "$Id$";
#endif
#include <ctype.h>
#include <errno.h>
#if HAVE_STDARG_H
#include <stdarg.h>
#endif
#if TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif
#include "uudefs.h"
#include "uuconf.h"
#include "system.h"
/* Local functions. */
__inline__ static char *zstpcpy P((char *zto, const char *zfrom));
static const char *zldate_and_time P((void));
/* Program name. Set by main function. */
const char *zProgram;
/* Log file name. */
static const char *zLogfile;
/* The function to call when a LOG_FATAL error occurs. */
static void (*pfLfatal) P((void));
/* Whether to go to a file. */
static boolean fLfile;
/* ID number. */
static int iLid;
/* The current user name. */
static char *zLuser;
/* The current system name. */
static char *zLsystem;
/* The current device name. */
char *zLdevice;
/* The open log file. */
static FILE *eLlog;
/* Whether we have tried to open the log file. We need this because
we don't want to keep trying to open the log file if we failed the
first time. It can't be static because under HAVE_HDB_LOGGING we
may have to write to various different log files. */
static boolean fLlog_tried;
#if DEBUG > 1
/* Debugging file name. */
static const char *zLdebugfile;
/* The open debugging file. */
static FILE *eLdebug;
/* Whether we've tried to open the debugging file. */
static boolean fLdebug_tried;
#endif
/* Statistics file name. */
static const char *zLstatsfile;
/* The open statistics file. */
static FILE *eLstats;
/* Whether we've tried to open the statistics file. */
static boolean fLstats_tried;
/* The array of signals. The elements are only set to TRUE by the
default signal handler. They are only set to FALSE if we don't
care whether we got the signal or not. */
volatile sig_atomic_t afSignal[INDEXSIG_COUNT];
/* The array of signals to log. The elements are only set to TRUE by
the default signal handler. They are set to FALSE when the signal
is logged in ulog. This means that if a signal comes in at just
the right time we won't log it (or, rather, we'll log it once
instead of twice), but that is not a catatrophe. */
volatile sig_atomic_t afLog_signal[INDEXSIG_COUNT];
/* Flag that indicates SIGHUP is worth logging. */
boolean fLog_sighup = TRUE;
/* Signal names to use when logging signals. */
static const char * const azSignal_names[INDEXSIG_COUNT] = INDEXSIG_NAMES;
/* If not NULL, ulog calls this function before outputting anything.
This is used to support cu. */
void (*pfLstart) P((void));
/* If not NULL, ulog calls this function after outputting everything.
This is used to support cu. */
void (*pfLend) P((void));
/* Set the function to call on a LOG_FATAL error. */
void
ulog_fatal_fn (pfn)
void (*pfn) P((void));
{
pfLfatal = pfn;
}
/* Decide whether to send log message to the file or not. */
void
ulog_to_file (puuconf, ffile)
pointer puuconf;
boolean ffile;
{
int iuuconf;
iuuconf = uuconf_logfile (puuconf, &zLogfile);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
#if DEBUG > 1
iuuconf = uuconf_debugfile (puuconf, &zLdebugfile);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
#endif
iuuconf = uuconf_statsfile (puuconf, &zLstatsfile);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
fLfile = ffile;
}
/* Set the ID number. This will be called by the usysdep_initialize
if there is something sensible to set it to. */
void
ulog_id (i)
int i;
{
iLid = i;
}
/* Set the user we are making log entries for. The arguments will be
copied into memory. */
void
ulog_user (zuser)
const char *zuser;
{
ubuffree (zLuser);
zLuser = zbufcpy (zuser);
}
/* Set the system name we are making log entries for. The name is copied
into memory. */
void
ulog_system (zsystem)
const char *zsystem;
{
if (zsystem == NULL
|| zLsystem == NULL
|| strcmp (zsystem, zLsystem) != 0)
{
ubuffree (zLsystem);
zLsystem = zbufcpy (zsystem);
#if HAVE_HDB_LOGGING
/* Under HDB logging we now must write to a different log file. */
ulog_close ();
#endif /* HAVE_HDB_LOGGING */
}
}
/* Set the device name. This is copied into memory. */
void
ulog_device (zdevice)
const char *zdevice;
{
ubuffree (zLdevice);
zLdevice = zbufcpy (zdevice);
}
/* A helper function for ulog. */
__inline__ static char *
zstpcpy (zto, zfrom)
char *zto;
const char *zfrom;
{
while ((*zto++ = *zfrom++) != '\0')
;
return zto - 1;
}
/* Make a log entry. We make a token concession to non ANSI_C systems,
but it clearly won't always work. */
#if ! HAVE_PROTOTYPES || ! HAVE_STDARG_H
#undef HAVE_VFPRINTF
#define HAVE_VFPRINTF 0
#endif
/*VARARGS2*/
#if HAVE_VFPRINTF
void
ulog (enum tlog ttype, const char *zmsg, ...)
#else
void
ulog (ttype, zmsg, a, b, c, d, f, g, h, i, j)
enum tlog ttype;
const char *zmsg;
#endif
{
#if HAVE_VFPRINTF
va_list parg;
#endif
FILE *e, *edebug;
boolean fstart, fend;
const char *zhdr;
char *zprefix;
register char *zset;
char *zformat;
char *zfrom;
/* Log any received signal. We do it this way to avoid calling ulog
from the signal handler. A few routines call ulog to get this
message out with zmsg == NULL. */
{
static boolean fdoing_sigs;
if (! fdoing_sigs)
{
int isig;
fdoing_sigs = TRUE;
for (isig = 0; isig < INDEXSIG_COUNT; isig++)
{
if (afLog_signal[isig])
{
afLog_signal[isig] = FALSE;
/* Apparently SunOS sends SIGINT rather than SIGHUP
when hanging up, so we don't log either signal if
fLog_sighup is FALSE. */
if ((isig != INDEXSIG_SIGHUP && isig != INDEXSIG_SIGINT)
|| fLog_sighup)
ulog (LOG_ERROR, "Got %s signal", azSignal_names[isig]);
}
}
fdoing_sigs = FALSE;
}
}
#if DEBUG > 1
/* If we've had a debugging file open in the past, then we want to
write all log file entries to the debugging file even if it's
currently closed. */
if (fLfile
&& eLdebug == NULL
&& ! fLdebug_tried
&& iDebug != 0)
{
fLdebug_tried = TRUE;
eLdebug = esysdep_fopen (zLdebugfile, FALSE, TRUE, TRUE);
}
#endif /* DEBUG > 1 */
if (! fLfile)
e = stderr;
#if DEBUG > 1
else if ((int) ttype >= (int) LOG_DEBUG)
{
e = eLdebug;
/* If we can't open the debugging file, don't output any
debugging messages. */
if (e == NULL)
return;
}
#endif /* DEBUG > 1 */
else
{
if (eLlog == NULL && ! fLlog_tried)
{
const char *zprint = NULL;
fLlog_tried = TRUE;
#if ! HAVE_HDB_LOGGING
eLlog = esysdep_fopen (zLogfile, TRUE, TRUE, TRUE);
zprint = zLogfile;
#else /* HAVE_HDB_LOGGING */
{
const char *zsys;
char *zbase;
char *zlower;
char *zfile;
/* We want to write to .Log/program/system, e.g.
.Log/uucico/uunet. The system name may not be set. */
if (zLsystem == NULL)
zsys = "ANY";
else
zsys = zLsystem;
zbase = zsysdep_base_name (zProgram);
if (zbase == NULL)
zbase = zbufcpy (zProgram);
/* On some systems the native uusched will invoke uucico
with an upper case argv[0]. We work around that by
forcing the filename to lower case here. */
for (zlower = zbase; *zlower != '\0'; zlower++)
if (isupper (*zlower))
*zlower = tolower (*zlower);
zfile = zbufalc (strlen (zLogfile)
+ strlen (zbase)
+ strlen (zsys)
+ 1);
sprintf (zfile, zLogfile, zbase, zsys);
ubuffree (zbase);
eLlog = esysdep_fopen (zfile, TRUE, TRUE, TRUE);
if (eLlog != NULL)
ubuffree (zfile);
else
zprint = zfile;
}
#endif /* HAVE_HDB_LOGGING */
if (eLlog == NULL)
{
/* We can't open the log file. We report the problem to
stderr. This is not ideal, since if this is uucico
running on an inbound call stderr is actually
connected to a remote system, but is better than
doing nothing. */
fprintf (stderr, "%s: %s: can not open log file: %s\n",
zProgram, zprint, strerror (errno));
if (pfLfatal != NULL)
(*pfLfatal) ();
usysdep_exit (FALSE);
}
}
e = eLlog;
/* eLlog might be NULL here because we might try to open the log
file recursively via esysdep_fopen. */
if (e == NULL)
return;
}
if (zmsg == NULL)
return;
if (pfLstart != NULL)
(*pfLstart) ();
edebug = NULL;
#if DEBUG > 1
if ((int) ttype < (int) LOG_DEBUG)
edebug = eLdebug;
#endif
fstart = TRUE;
fend = TRUE;
switch (ttype)
{
case LOG_NORMAL:
zhdr = "";
break;
case LOG_ERROR:
zhdr = "ERROR: ";
break;
case LOG_FATAL:
zhdr = "FATAL: ";
break;
#if DEBUG > 1
case LOG_DEBUG:
zhdr = "DEBUG: ";
break;
case LOG_DEBUG_START:
zhdr = "DEBUG: ";
fend = FALSE;
break;
case LOG_DEBUG_CONTINUE:
zhdr = NULL;
fstart = FALSE;
fend = FALSE;
break;
case LOG_DEBUG_END:
zhdr = NULL;
fstart = FALSE;
break;
#endif
default:
zhdr = "???: ";
break;
}
if (! fstart)
zprefix = zbufcpy ("");
else
{
if (! fLfile)
{
zprefix = zbufalc (strlen (zProgram) + 3);
sprintf (zprefix, "%s: ", zProgram);
}
else
{
zprefix = zbufalc (strlen (zProgram)
+ (zLsystem == NULL ? 1 : strlen (zLsystem))
+ (zLuser == NULL ? 4 : strlen (zLuser))
+ sizeof "1991-12-31 12:00:00.00"
+ strlen (zhdr)
+ 100);
zset = zprefix;
#if HAVE_TAYLOR_LOGGING
{
char *zbase;
zbase = zsysdep_base_name (zProgram);
if (zbase == NULL)
zbase = zbufcpy (zProgram);
zset = zstpcpy (zset, zbase);
*zset++ = ' ';
ubuffree (zbase);
}
#else /* ! HAVE_TAYLOR_LOGGING */
zset = zstpcpy (zset, zLuser == NULL ? "uucp" : zLuser);
*zset++ = ' ';
#endif /* HAVE_TAYLOR_LOGGING */
zset = zstpcpy (zset, zLsystem == NULL ? "-" : zLsystem);
*zset++ = ' ';
#if HAVE_TAYLOR_LOGGING
zset = zstpcpy (zset, zLuser == NULL ? "-" : zLuser);
*zset++ = ' ';
#endif /* HAVE_TAYLOR_LOGGING */
*zset++ = '(';
zset = zstpcpy (zset, zldate_and_time ());
if (iLid != 0)
{
#if ! HAVE_HDB_LOGGING
#if HAVE_TAYLOR_LOGGING
sprintf (zset, " %d", iLid);
#else /* ! HAVE_TAYLOR_LOGGING */
sprintf (zset, "-%d", iLid);
#endif /* ! HAVE_TAYLOR_LOGGING */
#else /* HAVE_HDB_LOGGING */
/* I assume that the second number here is meant to be
some sort of file sequence number, and that it should
correspond to the sequence number in the statistics
file. I don't have any really convenient way to do
this, so I won't unless somebody thinks it's very
important. */
sprintf (zset, ",%d,%d", iLid, 0);
#endif /* HAVE_HDB_LOGGING */
zset += strlen (zset);
}
#if QNX_LOG_NODE_ID
sprintf (zset, " %ld", (long) getnid ());
zset += strlen (zset);
#endif
*zset++ = ')';
*zset++ = ' ';
strcpy (zset, zhdr);
}
}
zformat = zbufalc (2 * strlen (zprefix) + strlen (zmsg) + 2);
zset = zformat;
zfrom = zprefix;
while (*zfrom != '\0')
{
if (*zfrom == '%')
*zset++ = '%';
*zset++ = *zfrom++;
}
ubuffree (zprefix);
zset = zstpcpy (zset, zmsg);
if (fend)
{
*zset++ = '\n';
*zset = '\0';
}
#if HAVE_VFPRINTF
va_start (parg, zmsg);
vfprintf (e, zformat, parg);
va_end (parg);
if (edebug != NULL)
{
va_start (parg, zmsg);
vfprintf (edebug, zformat, parg);
va_end (parg);
}
#else /* ! HAVE_VFPRINTF */
fprintf (e, zformat, a, b, c, d, f, g, h, i, j);
if (edebug != NULL)
fprintf (edebug, zformat, a, b, c, d, f, g, h, i, j);
#endif /* ! HAVE_VFPRINTF */
ubuffree (zformat);
(void) fflush (e);
if (edebug != NULL)
(void) fflush (edebug);
if (pfLend != NULL)
(*pfLend) ();
if (ttype == LOG_FATAL)
{
if (pfLfatal != NULL)
(*pfLfatal) ();
usysdep_exit (FALSE);
}
#if CLOSE_LOGFILES
ulog_close ();
#endif
}
/* Log a uuconf error. */
void
ulog_uuconf (ttype, puuconf, iuuconf)
enum tlog ttype;
pointer puuconf;
int iuuconf;
{
char ab[512];
(void) uuconf_error_string (puuconf, iuuconf, ab, sizeof ab);
ulog (ttype, "%s", ab);
}
/* Close the log file. There's nothing useful we can do with errors,
so we don't check for them. */
void
ulog_close ()
{
/* Make sure we logged any signal we received. */
ulog (LOG_ERROR, (const char *) NULL);
if (eLlog != NULL)
{
(void) fclose (eLlog);
eLlog = NULL;
fLlog_tried = FALSE;
}
#if DEBUG > 1
if (eLdebug != NULL)
{
(void) fclose (eLdebug);
eLdebug = NULL;
fLdebug_tried = FALSE;
}
#endif
}
/* Add an entry to the statistics file. We may eventually want to put
failed file transfers in here, but we currently do not. */
/*ARGSUSED*/
void
ustats (fsucceeded, zuser, zsystem, fsent, cbytes, csecs, cmicros, fcaller)
boolean fsucceeded;
const char *zuser;
const char *zsystem;
boolean fsent;
long cbytes;
long csecs;
long cmicros;
boolean fcaller;
{
long cbps;
/* The seconds and microseconds are now counted independently, so
they may be out of synch. */
if (cmicros < 0)
{
csecs -= ((- cmicros) / 1000000L) + 1;
cmicros = 1000000L - ((- cmicros) % 1000000L);
}
if (cmicros >= 1000000L)
{
csecs += cmicros / 10000000L;
cmicros = cmicros % 1000000L;
}
/* On a system which can determine microseconds we might very well
have both csecs == 0 and cmicros == 0. */
if (csecs == 0 && cmicros < 1000)
cbps = 0;
else
{
long cmillis, cdiv, crem;
/* Compute ((csecs * 1000) / cmillis) using integer division.
Where DIV is integer division, we know
a = (a DIV b) * b + a % b
so
a / b = (a DIV b) + (a % b) / b
We compute the latter with a as csecs and b as cmillis,
mixing the multiplication by 1000. */
cmillis = csecs * 1000 + cmicros / 1000;
cdiv = (cbytes / cmillis) * 1000;
crem = (cbytes % cmillis) * 1000;
cbps = cdiv + (crem / cmillis);
if (cmillis < 0 || cdiv < 0 || crem < 0 || cbps < 0)
{
/* We overflowed using milliseconds, so use seconds. */
cbps = cbytes / (csecs + ((cmicros > 500000L) ? 1 : 0));
}
}
if (eLstats == NULL)
{
if (fLstats_tried)
return;
fLstats_tried = TRUE;
eLstats = esysdep_fopen (zLstatsfile, TRUE, TRUE, TRUE);
if (eLstats == NULL)
return;
}
#if HAVE_TAYLOR_LOGGING
fprintf (eLstats,
"%s %s (%s) %s%s %ld bytes in %ld.%03ld seconds (%ld bytes/sec) on port %s\n",
zuser, zsystem, zldate_and_time (),
fsucceeded ? "" : "failed after ",
fsent ? "sent" : "received",
cbytes, csecs, cmicros / 1000, cbps,
zLdevice == NULL ? "unknown" : zLdevice);
#endif /* HAVE_TAYLOR_LOGGING */
#if HAVE_V2_LOGGING
fprintf (eLstats,
"%s %s (%s) (%ld) %s %s %ld bytes %ld seconds\n",
zuser, zsystem, zldate_and_time (),
(long) time ((time_t *) NULL),
fsent ? "sent" : "received",
fsucceeded ? "data" : "failed after",
cbytes, csecs + cmicros / 500000);
#endif /* HAVE_V2_LOGGING */
#if HAVE_HDB_LOGGING
{
static int iseq;
/* I don't know what the 'C' means. The sequence number should
probably correspond to the sequence number in the log file, but
that is currently always 0; using this fake sequence number
will still at least reveal which transfers are from different
calls. */
++iseq;
fprintf (eLstats,
"%s!%s %c (%s) (C,%d,%d) [%s] %s %ld / %ld.%03ld secs, %ld%s%s\n",
zsystem, zuser, fcaller ? 'M' : 'S', zldate_and_time (),
iLid, iseq, zLdevice == NULL ? "unknown" : zLdevice,
fsent ? "->" : "<-",
cbytes, csecs, cmicros / 1000, cbps,
" bytes/sec",
fsucceeded ? "" : " [PARTIAL FILE]");
}
#endif /* HAVE_HDB_LOGGING */
(void) fflush (eLstats);
#if CLOSE_LOGFILES
ustats_close ();
#endif
}
/* Close the statistics file. */
void
ustats_close ()
{
if (eLstats != NULL)
{
if (fclose (eLstats) != 0)
ulog (LOG_ERROR, "fclose: %s", strerror (errno));
eLstats = NULL;
fLstats_tried = FALSE;
}
}
/* Return the date and time in a form used for a log entry. */
static const char *
zldate_and_time ()
{
long isecs, imicros;
struct tm s;
#if HAVE_TAYLOR_LOGGING
static char ab[sizeof "1991-12-31 12:00:00.00"];
#endif
#if HAVE_V2_LOGGING
static char ab[sizeof "12/31-12:00"];
#endif
#if HAVE_HDB_LOGGING
static char ab[sizeof "12/31-12:00:00"];
#endif
isecs = ixsysdep_time (&imicros);
usysdep_localtime (isecs, &s);
#if HAVE_TAYLOR_LOGGING
sprintf (ab, "%04d-%02d-%02d %02d:%02d:%02d.%02d",
s.tm_year + 1900, s.tm_mon + 1, s.tm_mday, s.tm_hour,
s.tm_min, s.tm_sec, (int) (imicros / 10000));
#endif
#if HAVE_V2_LOGGING
sprintf (ab, "%d/%d-%02d:%02d", s.tm_mon + 1, s.tm_mday,
s.tm_hour, s.tm_min);
#endif
#if HAVE_HDB_LOGGING
sprintf (ab, "%d/%d-%d:%02d:%02d", s.tm_mon + 1, s.tm_mday,
s.tm_hour, s.tm_min, s.tm_sec);
#endif
return ab;
}