1 /*- 2 * Copyright (c) 2015 Dag-Erling Smørgrav 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 * 3. The name of the author may not be used to endorse or promote 14 * products derived from this software without specific prior written 15 * permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifdef HAVE_CONFIG_H 31 # include "config.h" 32 #endif 33 34 #include <sys/param.h> 35 36 #include <limits.h> 37 #include <stdlib.h> 38 #include <string.h> 39 40 #include <security/pam_modules.h> 41 #include <security/openpam.h> 42 43 #include "openpam_impl.h" 44 45 static int 46 pam_return(pam_handle_t *pamh, int flags, 47 int argc, const char *argv[]) 48 { 49 const char *errname; 50 char *e; 51 long errcode; 52 53 (void)flags; 54 (void)argc; 55 (void)argv; 56 if ((errname = openpam_get_option(pamh, "error")) == NULL || 57 errname[0] == '\0') { 58 openpam_log(PAM_LOG_ERROR, "missing error parameter"); 59 return (PAM_SYSTEM_ERR); 60 } 61 /* is it a number? */ 62 errcode = strtol(errname, &e, 10); 63 if (e != NULL && *e == '\0') { 64 /* yep, check range */ 65 if (errcode >= INT_MIN && errcode <= INT_MAX) 66 return (errcode); 67 } else { 68 /* nope, look it up */ 69 for (errcode = 0; errcode < PAM_NUM_ERRORS; ++errcode) 70 if (strcmp(errname, pam_err_name[errcode]) == 0) 71 return (errcode); 72 } 73 openpam_log(PAM_LOG_ERROR, "invalid error code '%s'", errname); 74 return (PAM_SYSTEM_ERR); 75 } 76 77 PAM_EXTERN int 78 pam_sm_authenticate(pam_handle_t *pamh, int flags, 79 int argc, const char *argv[]) 80 { 81 82 return (pam_return(pamh, flags, argc, argv)); 83 } 84 85 PAM_EXTERN int 86 pam_sm_setcred(pam_handle_t *pamh, int flags, 87 int argc, const char *argv[]) 88 { 89 90 return (pam_return(pamh, flags, argc, argv)); 91 } 92 93 PAM_EXTERN int 94 pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, 95 int argc, const char *argv[]) 96 { 97 98 return (pam_return(pamh, flags, argc, argv)); 99 } 100 101 PAM_EXTERN int 102 pam_sm_open_session(pam_handle_t *pamh, int flags, 103 int argc, const char *argv[]) 104 { 105 106 return (pam_return(pamh, flags, argc, argv)); 107 } 108 109 PAM_EXTERN int 110 pam_sm_close_session(pam_handle_t *pamh, int flags, 111 int argc, const char *argv[]) 112 { 113 114 return (pam_return(pamh, flags, argc, argv)); 115 } 116 117 PAM_EXTERN int 118 pam_sm_chauthtok(pam_handle_t *pamh, int flags, 119 int argc, const char *argv[]) 120 { 121 122 return (pam_return(pamh, flags, argc, argv)); 123 } 124 125 PAM_MODULE_ENTRY("pam_return"); 126