/*
* 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);
memset_s(pass, SUDO_CONV_REPL_MAX, 0, 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) {
memset_s(repl->reply, SUDO_CONV_REPL_MAX, 0, strlen(repl->reply));
free(repl->reply);
repl->reply = NULL;
}
} while (n--);
return -1;
}
void
sudo_debug_execve2(int level, const char *path, char *const argv[], char *const envp[])
{
char * const *av;
char *buf, *cp;
int buflen, pri, subsys, log_envp = 0;
size_t plen;
if (!sudo_debug_mode)
return;
/* Extract pri and subsystem from level. */
pri = SUDO_DEBUG_PRI(level);
subsys = SUDO_DEBUG_SUBSYS(level);
/* Make sure we want debug info at this level. */
if (subsys >= NUM_SUBSYSTEMS || sudo_debug_settings[subsys] < pri)
return;
/* Log envp for debug level "debug". */
if (sudo_debug_settings[subsys] >= SUDO_DEBUG_DEBUG - 1 && envp[0] != NULL)
log_envp = 1;
#define EXEC_PREFIX "exec "
/* Alloc and build up buffer. */
plen = strlen(path);
buflen = sizeof(EXEC_PREFIX) -1 + plen;
if (argv[0] != NULL) {
buflen += sizeof(" []") - 1;
for (av = argv; *av; av++)
buflen += strlen(*av) + 1;
buflen--;
}
if (log_envp) {
buflen += sizeof(" []") - 1;
for (av = envp; *av; av++)
buflen += strlen(*av) + 1;
buflen--;
}
buf = malloc(buflen + 1);
if (buf == NULL)
return;
/* Copy prefix and command. */
memcpy(buf, EXEC_PREFIX, sizeof(EXEC_PREFIX) - 1);
cp = buf + sizeof(EXEC_PREFIX) - 1;
memcpy(cp, path, plen);
cp += plen;
/* Copy argv. */
if (argv[0] != NULL) {
*cp++ = ' ';
*cp++ = '[';
for (av = argv; *av; av++) {
size_t avlen = strlen(*av);
memcpy(cp, *av, avlen);
cp += avlen;
*cp++ = ' ';
}
cp[-1] = ']';
}
if (log_envp) {
*cp++ = ' ';
*cp++ = '[';
for (av = envp; *av; av++) {
size_t avlen = strlen(*av);
memcpy(cp, *av, avlen);
cp += avlen;
*cp++ = ' ';
}
cp[-1] = ']';
}
*cp = '\0';
sudo_debug_write(buf, buflen, 0);
free(buf);
}