1 /*- 2 * Copyright (c) 2001 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by ThinkSec AS and 6 * NAI Labs, the Security Research Division of Network Associates, Inc. 7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 8 * DARPA CHATS research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote 19 * products derived from this software without specific prior written 20 * permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 42 #include <security/pam_appl.h> 43 #include <security/pam_modules.h> 44 #include <security/openpam.h> 45 46 static int 47 _pam_echo(pam_handle_t *pamh, int flags, 48 int argc, const char *argv[]) 49 { 50 struct pam_message msg; 51 const struct pam_message *msgp; 52 const struct pam_conv *pamc; 53 struct pam_response *resp; 54 size_t len; 55 int i, pam_err; 56 57 if (flags & PAM_SILENT) 58 return (PAM_SUCCESS); 59 pam_err = pam_get_item(pamh, PAM_CONV, (const void **)&pamc); 60 if (pam_err != PAM_SUCCESS) 61 return (pam_err); 62 for (i = 0, len = 0; i < argc; ++i) 63 len += strlen(argv[i]) + 1; 64 if ((msg.msg = malloc(len)) == NULL) 65 return (PAM_BUF_ERR); 66 for (i = 0, len = 0; i < argc; ++i) 67 len += sprintf(msg.msg + len, "%s%s", i ? " " : "", argv[i]); 68 msg.msg[len] = '\0'; 69 msg.msg_style = PAM_TEXT_INFO; 70 msgp = &msg; 71 resp = NULL; 72 pam_err = (pamc->conv)(1, &msgp, &resp, pamc->appdata_ptr); 73 free(resp); 74 free(msg.msg); 75 return (pam_err); 76 } 77 78 PAM_EXTERN int 79 pam_sm_authenticate(pam_handle_t *pamh, int flags, 80 int argc, const char *argv[]) 81 { 82 83 return (_pam_echo(pamh, flags, argc, argv)); 84 } 85 86 PAM_EXTERN int 87 pam_sm_setcred(pam_handle_t *pamh, int flags, 88 int argc, const char *argv[]) 89 { 90 91 return (_pam_echo(pamh, flags, argc, argv)); 92 } 93 94 PAM_EXTERN int 95 pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, 96 int argc, const char *argv[]) 97 { 98 99 return (_pam_echo(pamh, flags, argc, argv)); 100 } 101 102 PAM_EXTERN int 103 pam_sm_open_session(pam_handle_t *pamh, int flags, 104 int argc, const char *argv[]) 105 { 106 107 return (_pam_echo(pamh, flags, argc, argv)); 108 } 109 110 PAM_EXTERN int 111 pam_sm_close_session(pam_handle_t *pamh, int flags, 112 int argc, const char *argv[]) 113 { 114 115 return (_pam_echo(pamh, flags, argc, argv)); 116 } 117 118 PAM_EXTERN int 119 pam_sm_chauthtok(pam_handle_t *pamh, int flags, 120 int argc, const char *argv[]) 121 { 122 123 return (_pam_echo(pamh, flags, argc, argv)); 124 } 125 126 PAM_MODULE_ENTRY("pam_echo"); 127