149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
/*
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* Copyright (c) 1999-2005, 2007-2012 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#include <unistd.h>
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#include <errno.h>
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#include "sudo.h"
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#include "sudo_plugin.h"
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#include "sudo_plugin_int.h"
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extern int tgetpass_flags; /* XXX */
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/*
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* Sudo conversation function.
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*/
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int
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sudo_conversation(int num_msgs, const struct sudo_conv_message msgs[],
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struct sudo_conv_reply replies[], struct sudo_conv_callback *callback)
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{
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char *pass;
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int n;
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const int conv_debug_instance = sudo_debug_get_active_instance();
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sudo_debug_set_active_instance(sudo_debug_instance);
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for (n = 0; n < num_msgs; n++) {
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const struct sudo_conv_message *msg = &msgs[n];
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int flags = tgetpass_flags;
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switch (msg->msg_type & 0xff) {
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case SUDO_CONV_PROMPT_ECHO_ON:
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SET(flags, TGP_ECHO);
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goto read_pass;
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case SUDO_CONV_PROMPT_MASK:
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SET(flags, TGP_MASK);
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/* FALLTHROUGH */
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case SUDO_CONV_PROMPT_ECHO_OFF:
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if (ISSET(msg->msg_type, SUDO_CONV_PROMPT_ECHO_OK))
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SET(flags, TGP_NOECHO_TRY);
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read_pass:
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/* Read the password unless interrupted. */
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pass = tgetpass(msg->msg, msg->timeout, flags, callback);
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if (pass == NULL)
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goto err;
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replies[n].reply = strdup(pass);
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if (replies[n].reply == NULL) {
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sudo_fatalx_nodebug(U_("%s: %s"), "sudo_conversation",
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U_("unable to allocate memory"));
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}
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memset_s(pass, SUDO_CONV_REPL_MAX, 0, strlen(pass));
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break;
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case SUDO_CONV_INFO_MSG:
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if (msg->msg != NULL && fputs(msg->msg, stdout) == EOF)
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goto err;
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break;
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case SUDO_CONV_ERROR_MSG:
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if (msg->msg != NULL && fputs(msg->msg, stderr) == EOF)
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goto err;
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break;
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default:
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goto err;
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}
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}
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sudo_debug_set_active_instance(conv_debug_instance);
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return 0;
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err:
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/* Zero and free allocated memory and return an error. */
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if (replies != 0) {
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do {
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struct sudo_conv_reply *repl = &replies[n];
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if (repl->reply == NULL)
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continue;
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memset_s(repl->reply, SUDO_CONV_REPL_MAX, 0, strlen(repl->reply));
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free(repl->reply);
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repl->reply = NULL;
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} while (n--);
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}
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sudo_debug_set_active_instance(conv_debug_instance);
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return -1;
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}
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int
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sudo_conversation_1_7(int num_msgs, const struct sudo_conv_message msgs[],
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struct sudo_conv_reply replies[])
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{
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return sudo_conversation(num_msgs, msgs, replies, NULL);
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}
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int
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sudo_conversation_printf(int msg_type, const char *fmt, ...)
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{
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va_list ap;
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int len;
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const int conv_debug_instance = sudo_debug_get_active_instance();
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sudo_debug_set_active_instance(sudo_debug_instance);
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switch (msg_type) {
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case SUDO_CONV_INFO_MSG:
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va_start(ap, fmt);
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len = vfprintf(stdout, fmt, ap);
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va_end(ap);
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break;
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case SUDO_CONV_ERROR_MSG:
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va_start(ap, fmt);
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len = vfprintf(stderr, fmt, ap);
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va_end(ap);
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break;
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default:
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len = -1;
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errno = EINVAL;
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break;
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}
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sudo_debug_set_active_instance(conv_debug_instance);
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return len;
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}
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