1 /* $NetBSD: pam_debug_log.c,v 1.4 2011/12/28 14:52:56 christos Exp $ */
2
3 /*-
4 * Copyright 2001 Mark R V Murray
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 #ifdef __FreeBSD__
31 __FBSDID("$FreeBSD: src/lib/libpam/libpam/pam_debug_log.c,v 1.8 2002/04/14 16:44:04 des Exp $");
32 #else
33 __RCSID("$NetBSD: pam_debug_log.c,v 1.4 2011/12/28 14:52:56 christos Exp $");
34 #endif
35
36 #include <stdarg.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40
41 #include <security/pam_appl.h>
42 #include <security/openpam.h>
43 #include <security/pam_mod_misc.h>
44
45 /* Print a verbose error, including the function name and a
46 * cleaned up filename.
47 */
48 void
_pam_verbose_error(pam_handle_t * pamh,int flags,const char * file,const char * function,const char * format,...)49 _pam_verbose_error(pam_handle_t *pamh, int flags,
50 const char *file, const char *function, const char *format, ...)
51 {
52 va_list ap;
53 char *msg;
54 int rv;
55 const char *modname, *period;
56
57 if ((flags & PAM_SILENT) || openpam_get_option(pamh, "no_warn"))
58 return;
59 modname = strrchr(file, '/');
60 if (modname == NULL)
61 modname = file;
62 period = strchr(modname, '.');
63 if (period == NULL)
64 period = strchr(modname, '\0');
65 va_start(ap, format);
66 rv = vasprintf(&msg, format, ap);
67 va_end(ap);
68 if (rv < 0)
69 return;
70 pam_error(pamh, "%.*s: %s: %s\n", (int)(ssize_t)(period - modname),
71 modname, function, msg);
72 free(msg);
73 }
74