102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/*-
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by ThinkSec AS and
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* Network Associates Laboratories, the Security Research Division of
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* Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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* ("CBOSS"), as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <security/pam_appl.h>
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int
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converse(int n, const struct pam_message **msg,
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struct pam_response **resp, void *data)
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{
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struct pam_response *aresp;
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char buf[PAM_MAX_RESP_SIZE];
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int i;
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data = data;
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if (n <= 0 || n > PAM_MAX_NUM_MSG)
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return (PAM_CONV_ERR);
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if ((aresp = calloc(n, sizeof *aresp)) == NULL)
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return (PAM_BUF_ERR);
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for (i = 0; i < n; ++i) {
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aresp[i].resp_retcode = 0;
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aresp[i].resp = NULL;
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switch (msg[i]->msg_style) {
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case PAM_PROMPT_ECHO_OFF:
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aresp[i].resp = strdup(getpass(msg[i]->msg));
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if (aresp[i].resp == NULL)
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goto fail;
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break;
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case PAM_PROMPT_ECHO_ON:
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fputs(msg[i]->msg, stderr);
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if (fgets(buf, sizeof buf, stdin) == NULL)
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goto fail;
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aresp[i].resp = strdup(buf);
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if (aresp[i].resp == NULL)
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goto fail;
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break;
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case PAM_ERROR_MSG:
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fputs(msg[i]->msg, stderr);
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if (strlen(msg[i]->msg) > 0 &&
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msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n')
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fputc('\n', stderr);
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break;
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case PAM_TEXT_INFO:
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fputs(msg[i]->msg, stdout);
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if (strlen(msg[i]->msg) > 0 &&
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msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n')
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fputc('\n', stdout);
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break;
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default:
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goto fail;
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}
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}
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*resp = aresp;
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return (PAM_SUCCESS);
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fail:
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for (i = 0; i < n; ++i) {
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if (aresp[i].resp != NULL) {
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memset(aresp[i].resp, 0, strlen(aresp[i].resp));
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free(aresp[i].resp);
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}
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}
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memset(aresp, 0, n * sizeof *aresp);
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*resp = NULL;
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return (PAM_CONV_ERR);
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}
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