mirror of https://github.com/sudo-project/sudo.git
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
|
|
* SPDX-License-Identifier: ISC
|
|
*
|
|
* Copyright (c) 2010-2012 Todd C. Miller <Todd.Miller@sudo.ws>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
|
|
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
|
|
#include <sudo_compat.h>
|
|
#include <sudo_util.h>
|
|
#include <sudo_plugin.h>
|
|
#include <sudo_debug.h>
|
|
#include <pathnames.h>
|
|
|
|
static int
|
|
sudo_printf_int(int msg_type, const char * restrict fmt, ...)
|
|
{
|
|
FILE *fp = stdout;
|
|
FILE *ttyfp = NULL;
|
|
char sbuf[8192];
|
|
char *buf = sbuf;
|
|
va_list ap;
|
|
int len;
|
|
|
|
if (ISSET(msg_type, SUDO_CONV_PREFER_TTY)) {
|
|
/* Try writing to /dev/tty first. */
|
|
ttyfp = fopen(_PATH_TTY, "w");
|
|
}
|
|
|
|
switch (msg_type & 0xff) {
|
|
case SUDO_CONV_ERROR_MSG:
|
|
fp = stderr;
|
|
FALLTHROUGH;
|
|
case SUDO_CONV_INFO_MSG:
|
|
/*
|
|
* We use vsnprintf() instead of vfprintf() here to avoid
|
|
* problems on systems where the system printf(3) is not
|
|
* C99-compliant. We use our own snprintf() on such systems.
|
|
*/
|
|
va_start(ap, fmt);
|
|
len = vsnprintf(sbuf, sizeof(sbuf), fmt, ap);
|
|
va_end(ap);
|
|
if (len < 0 || len >= ssizeof(sbuf)) {
|
|
/* Try again with a dynamically-sized buffer. */
|
|
va_start(ap, fmt);
|
|
len = vasprintf(&buf, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
if (len != -1) {
|
|
if (fwrite(buf, 1, len, ttyfp ? ttyfp : fp) == 0)
|
|
len = -1;
|
|
if (buf != sbuf)
|
|
free(buf);
|
|
}
|
|
break;
|
|
default:
|
|
len = -1;
|
|
errno = EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (ttyfp != NULL)
|
|
fclose(ttyfp);
|
|
|
|
return len;
|
|
}
|
|
|
|
sudo_printf_t sudo_printf = sudo_printf_int;
|