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/* error.c -- error handler for noninteractive utilities
Copyright (C) 1990-1992 Free Software Foundation, Inc.
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, 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. */
/* David MacKenzie */
/* Brian Berliner added support for CVS */
#include "cvs.h"
#include <stdio.h>
/* If non-zero, error will use the CVS protocol to stdout to report error
messages. This will only be set in the CVS server parent process;
most other code is run via do_cvs_command, which forks off a child
process and packages up its stderr in the protocol. */
int error_use_protocol;
#ifdef HAVE_VPRINTF
#ifdef __STDC__
#include <stdarg.h>
#define VA_START(args, lastarg) va_start(args, lastarg)
#else /* ! __STDC__ */
#include <varargs.h>
#define VA_START(args, lastarg) va_start(args)
#endif /* __STDC__ */
#else /* ! HAVE_VPRINTF */
#ifdef HAVE_DOPRNT
#define va_alist args
#define va_dcl int args;
#else /* ! HAVE_DOPRNT */
#define va_alist a1, a2, a3, a4, a5, a6, a7, a8
#define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
#endif /* HAVE_DOPRNT */
#endif /* HAVE_VPRINTF */
#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#else /* ! STDC_HEADERS */
#ifdef __STDC__
void exit(int status);
#else /* ! __STDC__ */
void exit ();
#endif /* __STDC__ */
#endif /* STDC_HEADERS */
#ifndef strerror
extern char *strerror ();
#endif
void
error_exit PROTO ((void))
{
Lock_Cleanup();
#ifdef SERVER_SUPPORT
if (server_active)
server_cleanup (0);
#endif
#ifdef SYSTEM_CLEANUP
/* Hook for OS-specific behavior, for example socket subsystems on
NT and OS2 or dealing with windows and arguments on Mac. */
SYSTEM_CLEANUP ();
#endif
exit (EXIT_FAILURE);
}
/* Print the program name and error message MESSAGE, which is a printf-style
format string with optional args. This is a very limited printf subset:
%s, %d, %c, %x and %% only (without anything between the % and the s,
d, &c). Callers who want something fancier can use sprintf.
If ERRNUM is nonzero, print its corresponding system error message.
Exit with status EXIT_FAILURE if STATUS is nonzero. If MESSAGE is "",
no need to print a message.
I think this is largely cleaned up to the point where it does the right
thing for the server, whether the normal server_active (child process)
case or the error_use_protocol (parent process) case. The one exception
is that STATUS nonzero for error_use_protocol probably doesn't work yet;
in that case still need to use the pending_error machinery in server.c.
error() does not molest errno; some code (e.g. Entries_Open) depends
on being able to say something like:
error (0, 0, "foo");
error (0, errno, "bar");
*/
/* VARARGS */
void
#if defined (__STDC__)
error (int status, int errnum, const char *message, ...)
#else
error (status, errnum, message, va_alist)
int status;
int errnum;
const char *message;
va_dcl
#endif
{
int save_errno = errno;
if (message[0] != '\0')
{
va_list args;
const char *p;
char *q;
char *str;
int num;
unsigned int unum;
int ch;
unsigned char buf[100];
cvs_outerr (program_name, 0);
if (command_name && *command_name)
{
cvs_outerr (" ", 1);
if (status != 0)
cvs_outerr ("[", 1);
cvs_outerr (command_name, 0);
if (status != 0)
cvs_outerr (" aborted]", 0);
}
cvs_outerr (": ", 2);
VA_START (args, message);
p = message;
while ((q = strchr (p, '%')) != NULL)
{
static const char msg[] =
"\ninternal error: bad % in error()\n";
if (q - p > 0)
cvs_outerr (p, q - p);
switch (q[1])
{
case 's':
str = va_arg (args, char *);
cvs_outerr (str, strlen (str));
break;
case 'd':
num = va_arg (args, int);
sprintf (buf, "%d", num);
cvs_outerr (buf, strlen (buf));
break;
case 'x':
unum = va_arg (args, unsigned int);
sprintf (buf, "%x", unum);
cvs_outerr (buf, strlen (buf));
break;
case 'c':
ch = va_arg (args, int);
buf[0] = ch;
cvs_outerr (buf, 1);
break;
case '%':
cvs_outerr ("%", 1);
break;
default:
cvs_outerr (msg, sizeof (msg) - 1);
/* Don't just keep going, because q + 1 might point to the
terminating '\0'. */
goto out;
}
p = q + 2;
}
cvs_outerr (p, strlen (p));
out:
va_end (args);
if (errnum != 0)
{
cvs_outerr (": ", 2);
cvs_outerr (strerror (errnum), 0);
}
cvs_outerr ("\n", 1);
}
if (status)
error_exit ();
errno = save_errno;
}
/* Print the program name and error message MESSAGE, which is a printf-style
format string with optional args to the file specified by FP.
If ERRNUM is nonzero, print its corresponding system error message.
Exit with status EXIT_FAILURE if STATUS is nonzero. */
/* VARARGS */
void
#if defined (HAVE_VPRINTF) && defined (__STDC__)
fperror (FILE *fp, int status, int errnum, char *message, ...)
#else
fperror (fp, status, errnum, message, va_alist)
FILE *fp;
int status;
int errnum;
char *message;
va_dcl
#endif
{
#ifdef HAVE_VPRINTF
va_list args;
#endif
fprintf (fp, "%s: ", program_name);
#ifdef HAVE_VPRINTF
VA_START (args, message);
vfprintf (fp, message, args);
va_end (args);
#else
#ifdef HAVE_DOPRNT
_doprnt (message, &args, fp);
#else
fprintf (fp, message, a1, a2, a3, a4, a5, a6, a7, a8);
#endif
#endif
if (errnum)
fprintf (fp, ": %s", strerror (errnum));
putc ('\n', fp);
fflush (fp);
if (status)
error_exit ();
}
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