| 1 | /*- |
|---|
| 2 | * Copyright (c) 2002 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 | * $P4: //depot/projects/openpam/lib/pam_get_authtok.c#12 $ |
|---|
| 35 | */ |
|---|
| 36 | |
|---|
| 37 | #include <sys/param.h> |
|---|
| 38 | |
|---|
| 39 | #include <security/pam_appl.h> |
|---|
| 40 | #include <security/openpam.h> |
|---|
| 41 | |
|---|
| 42 | #include "openpam_impl.h" |
|---|
| 43 | |
|---|
| 44 | /* |
|---|
| 45 | * OpenPAM extension |
|---|
| 46 | * |
|---|
| 47 | * Retrieve authentication token |
|---|
| 48 | */ |
|---|
| 49 | |
|---|
| 50 | int |
|---|
| 51 | pam_get_authtok(pam_handle_t *pamh, |
|---|
| 52 | const char **authtok, |
|---|
| 53 | const char *prompt) |
|---|
| 54 | { |
|---|
| 55 | char *p, *resp; |
|---|
| 56 | int r, style; |
|---|
| 57 | |
|---|
| 58 | if (pamh == NULL || authtok == NULL) |
|---|
| 59 | return (PAM_SYSTEM_ERR); |
|---|
| 60 | |
|---|
| 61 | if (openpam_get_option(pamh, "try_first_pass") || |
|---|
| 62 | openpam_get_option(pamh, "use_first_pass")) { |
|---|
| 63 | r = pam_get_item(pamh, PAM_AUTHTOK, (const void **)authtok); |
|---|
| 64 | if (r == PAM_SUCCESS && *authtok != NULL) |
|---|
| 65 | return (PAM_SUCCESS); |
|---|
| 66 | else if (openpam_get_option(pamh, "use_first_pass")) |
|---|
| 67 | return (r == PAM_SUCCESS ? PAM_AUTH_ERR : r); |
|---|
| 68 | } |
|---|
| 69 | if (pam_get_item(pamh, PAM_AUTHTOK_PROMPT, |
|---|
| 70 | (const void **)&p) != PAM_SUCCESS || p == NULL) |
|---|
| 71 | if (prompt == NULL) |
|---|
| 72 | prompt = "Password:"; |
|---|
| 73 | style = openpam_get_option(pamh, "echo_pass") ? |
|---|
| 74 | PAM_PROMPT_ECHO_ON : PAM_PROMPT_ECHO_OFF; |
|---|
| 75 | r = pam_prompt(pamh, style, &resp, "%s", p ? p : prompt); |
|---|
| 76 | if (r != PAM_SUCCESS) |
|---|
| 77 | return (r); |
|---|
| 78 | *authtok = resp; |
|---|
| 79 | return (pam_set_item(pamh, PAM_AUTHTOK, *authtok)); |
|---|
| 80 | } |
|---|
| 81 | |
|---|
| 82 | /* |
|---|
| 83 | * Error codes: |
|---|
| 84 | * |
|---|
| 85 | * =pam_get_item |
|---|
| 86 | * =pam_prompt |
|---|
| 87 | * =pam_set_item |
|---|
| 88 | * !PAM_SYMBOL_ERR |
|---|
| 89 | */ |
|---|
