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/*
pam_prompt.c - replacement function for pam_prompt()
Copyright (C) 2010 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include "compat/attrs.h"
#include "compat/pam_compat.h"
int pam_prompt(pam_handle_t *pamh,int style,char **response,const char *format,...)
{
int rc;
struct pam_conv *aconv;
char buffer[200];
va_list ap;
struct pam_message msg, *pmsg;
struct pam_response *resp;
/* the the conversion function */
rc=pam_get_item(pamh,PAM_CONV,(const void **)&aconv);
if (rc!=PAM_SUCCESS)
return rc;
/* make the message string */
va_start(ap,format);
vsnprintf(buffer,sizeof(buffer),format,ap);
buffer[sizeof(buffer)-1]='\0';
va_end(ap);
/* build the message */
msg.msg_style=style;
msg.msg=buffer;
pmsg=&msg;
resp=NULL;
rc=aconv->conv(1,(const struct pam_message **)&pmsg,&resp,aconv->appdata_ptr);
if (rc!=PAM_SUCCESS)
return rc;
/* assign response if it is set */
if (response!=NULL)
{
if (resp==NULL)
return PAM_CONV_ERR;
if (resp[0].resp==NULL)
{
free(resp);
return PAM_CONV_ERR;
}
*response=resp[0].resp;
}
else
free(resp[0].resp);
free(resp);
return PAM_SUCCESS;
}
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