/*
* Copyright (c) 1999-2005, 2007-2010 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif /* STDC_HEADERS */
#ifdef HAVE_STRING_H
# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
# include <memory.h>
# endif
# include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif /* HAVE_STRINGS_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <errno.h>
#include "sudo.h"
#include "sudo_plugin.h"
#include "sudo_plugin_int.h"
extern int tgetpass_flags; /* XXX */
#if defined(HAVE_DLOPEN) || defined(HAVE_SHL_LOAD)
sudo_conv_t sudo_conv; /* NULL in sudo front-end */
#endif
/*
* Sudo conversation function.
*/
int
sudo_conversation(int num_msgs, const struct sudo_conv_message msgs[],
struct sudo_conv_reply replies[])
{
struct sudo_conv_reply *repl;
const struct sudo_conv_message *msg;
char *pass;
int n, flags = tgetpass_flags;
for (n = 0; n < num_msgs; n++) {
msg = &msgs[n];
repl = &replies[n];
switch (msg->msg_type & 0xff) {
case SUDO_CONV_PROMPT_ECHO_ON:
case SUDO_CONV_PROMPT_MASK:
if (msg->msg_type == SUDO_CONV_PROMPT_ECHO_ON)
SET(flags, TGP_ECHO);
else
SET(flags, TGP_MASK);
/* FALLTHROUGH */
case SUDO_CONV_PROMPT_ECHO_OFF:
if (ISSET(msg->msg_type, SUDO_CONV_PROMPT_ECHO_OK))
SET(flags, TGP_NOECHO_TRY);
/* Read the password unless interrupted. */
pass = tgetpass(msg->msg, msg->timeout, flags);
if (pass == NULL)
goto err;
repl->reply = estrdup(pass);
zero_bytes(pass, strlen(pass));
break;
case SUDO_CONV_INFO_MSG:
if (msg->msg)
(void) fputs(msg->msg, stdout);
break;
case SUDO_CONV_ERROR_MSG:
if (msg->msg)
(void) fputs(msg->msg, stderr);
break;
case SUDO_CONV_DEBUG_MSG:
if (msg->msg)
sudo_debug_write(msg->msg, strlen(msg->msg), 0);
break;
default:
goto err;
}
}
return 0;
err:
/* Zero and free allocated memory and return an error. */
do {
repl = &replies[n];
if (repl->reply != NULL) {
zero_bytes(repl->reply, strlen(repl->reply));
free(repl->reply);
repl->reply = NULL;
}
} while (n--);
return -1;
}
int
_sudo_printf(int msg_type, const char *fmt, ...)
{
va_list ap;
FILE *fp;
int len;
switch (msg_type) {
case SUDO_CONV_INFO_MSG:
fp = stdout;
break;
case SUDO_CONV_ERROR_MSG:
fp = stderr;
break;
default:
errno = EINVAL;
return -1;
}
va_start(ap, fmt);
len = vfprintf(fp, fmt, ap);
va_end(ap);
return len;
}
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