How buggy this little piece of code could be? Repair strnvis() buffersize
[dragonfly.git] / lib / libpam / pam_debug_log.c
CommitLineData
984263bc 1/*-
61be715a 2 * Copyright 2001 Mark R V Murray
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3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
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26 * $FreeBSD: src/lib/libpam/libpam/pam_debug_log.c,v 1.8 2002/04/14 16:44:04 des Exp $
27 * $DragonFly: src/lib/libpam/pam_debug_log.c,v 1.1 2005/07/13 12:34:21 joerg Exp $
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28 */
29
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30#include <libgen.h>
31#include <stdarg.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35
36#include <security/pam_appl.h>
37#include <security/openpam.h>
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38#include <security/pam_mod_misc.h>
39
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40/* Print a verbose error, including the function name and a
41 * cleaned up filename.
984263bc 42 */
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43void
44_pam_verbose_error(pam_handle_t *pamh, int flags,
45 const char *file, const char *function, const char *format, ...)
984263bc 46{
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47 va_list ap;
48 char *fmtbuf, *modname, *period;
984263bc 49
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50 if (!(flags & PAM_SILENT) && !openpam_get_option(pamh, "no_warn")) {
51 modname = basename(file);
52 period = strchr(modname, '.');
53 if (period == NULL)
54 period = strchr(modname, '\0');
55 va_start(ap, format);
56 asprintf(&fmtbuf, "%.*s: %s: %s\n", (int)(period - modname),
57 modname, function, format);
58 pam_verror(pamh, fmtbuf, ap);
59 free(fmtbuf);
60 va_end(ap);
61 }
984263bc 62}