130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/*-
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* Copyright (c) 2002-2003 Networks Associates Technology, Inc.
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* Copyright (c) 2004-2007 Dag-Erling Smørgrav
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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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* $Id$
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <security/pam_appl.h>
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#include "openpam_impl.h"
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/*
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* OpenPAM extension
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*
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* Call the conversation function
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*/
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int
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pam_vprompt(const pam_handle_t *pamh,
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int style,
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char **resp,
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const char *fmt,
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va_list ap)
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{
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char msgbuf[PAM_MAX_MSG_SIZE];
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struct pam_message msg;
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const struct pam_message *msgp;
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struct pam_response *rsp;
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const struct pam_conv *conv;
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const void *convp;
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int r;
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ENTER();
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r = pam_get_item(pamh, PAM_CONV, &convp);
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if (r != PAM_SUCCESS)
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RETURNC(r);
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conv = convp;
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if (conv == NULL || conv->conv == NULL) {
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openpam_log(PAM_LOG_ERROR, "no conversation function");
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RETURNC(PAM_SYSTEM_ERR);
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}
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vsnprintf(msgbuf, PAM_MAX_MSG_SIZE, fmt, ap);
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msg.msg_style = style;
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msg.msg = msgbuf;
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msgp = &msg;
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rsp = NULL;
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r = (conv->conv)(1, &msgp, &rsp, conv->appdata_ptr);
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*resp = rsp == NULL ? NULL : rsp->resp;
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FREE(rsp);
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RETURNC(r);
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}
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/*
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* Error codes:
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*
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* !PAM_SYMBOL_ERR
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* PAM_SYSTEM_ERR
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* PAM_BUF_ERR
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* PAM_CONV_ERR
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*/
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/**
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* The =pam_vprompt function constructs a string from the =fmt and =ap
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* arguments using =vsnprintf, and passes it to the given PAM context's
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* conversation function.
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*
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* The =style argument specifies the type of interaction requested, and
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* must be one of the following:
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*
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* =PAM_PROMPT_ECHO_OFF:
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* Display the message and obtain the user's response without
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* displaying it.
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* =PAM_PROMPT_ECHO_ON:
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* Display the message and obtain the user's response.
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* =PAM_ERROR_MSG:
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* Display the message as an error message, and do not wait
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* for a response.
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* =PAM_TEXT_INFO:
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* Display the message as an informational message, and do
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* not wait for a response.
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*
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* A pointer to the response, or =NULL if the conversation function did
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* not return one, is stored in the location pointed to by the =resp
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* argument.
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*
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* The message and response should not exceed =PAM_MAX_MSG_SIZE or
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* =PAM_MAX_RESP_SIZE, respectively.
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* If they do, they may be truncated.
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*
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* >pam_error
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* >pam_info
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* >pam_prompt
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* >pam_verror
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* >pam_vinfo
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*/
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