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 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