0d31d3d686
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24356 ec53bebd-3082-4978-b11e-865c3cabbd6b
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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* Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
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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. 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 <config.h>
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#ifndef HAVE_VSYSLOG
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#include <stdio.h>
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#include <syslog.h>
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#include <stdarg.h>
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#include "roken.h"
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/*
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* the theory behind this is that we might be trying to call vsyslog
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* when there's no memory left, and we should try to be as useful as
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* possible. And the format string should say something about what's
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* failing.
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*/
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static void
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simple_vsyslog(int pri, const char *fmt, va_list ap)
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{
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syslog (pri, "%s", fmt);
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}
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/*
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* do like syslog but with a `va_list'
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*/
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void ROKEN_LIB_FUNCTION
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vsyslog(int pri, const char *fmt, va_list ap)
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{
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char *fmt2;
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const char *p;
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char *p2;
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int saved_errno = errno;
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int fmt_len = strlen (fmt);
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int fmt2_len = fmt_len;
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char *buf;
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fmt2 = malloc (fmt_len + 1);
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if (fmt2 == NULL) {
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simple_vsyslog (pri, fmt, ap);
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return;
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}
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for (p = fmt, p2 = fmt2; *p != '\0'; ++p) {
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if (p[0] == '%' && p[1] == 'm') {
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const char *e = strerror (saved_errno);
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int e_len = strlen (e);
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char *tmp;
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int pos;
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pos = p2 - fmt2;
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fmt2_len += e_len - 2;
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tmp = realloc (fmt2, fmt2_len + 1);
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if (tmp == NULL) {
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free (fmt2);
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simple_vsyslog (pri, fmt, ap);
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return;
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}
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fmt2 = tmp;
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p2 = fmt2 + pos;
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memmove (p2, e, e_len);
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p2 += e_len;
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++p;
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} else
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*p2++ = *p;
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}
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*p2 = '\0';
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vasprintf (&buf, fmt2, ap);
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free (fmt2);
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if (buf == NULL) {
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simple_vsyslog (pri, fmt, ap);
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return;
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}
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syslog (pri, "%s", buf);
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free (buf);
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}
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#endif
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