/*
// AUTHOR
// Stef Walter
//
// LICENSE
// This software is in the public domain.
//
// The software is provided "as is", without warranty of any kind,
// express or implied, including but not limited to the warranties
// of merchantability, fitness for a particular purpose, and
// noninfringement. In no event shall the author(s) be liable for any
// claim, damages, or other liability, whether in an action of
// contract, tort, or otherwise, arising from, out of, or in connection
// with the software or the use or other dealings in the software.
//
// SUPPORT
// Send bug reports to: <stef@memberwebs.com>
//
// CHANGES
// 1.1
//		Initial implementation
*/

#define SYSLOG_NAMES

#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <stdio.h>
#include <syslog.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdarg.h>


#define CONSOLE_DEV			"/dev/console"

#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif

/* Error handlers */
static void doWarn(const char* msg, ...);
static void doQuit(const char* msg, ...);

static int fcopy(FILE* dest, FILE* src);

int main(int argc, char* argv[])
{
	FILE* console;
	struct stat sb;

	/*
	 * Check to see if /dev/console is a real console
	 */
	if(stat(CONSOLE_DEV, &sb) == 0)
	{
		if(!(sb.st_mode & S_IFREG || sb.st_mode & S_IFLNK))
		{
			doWarn("%s is not a jail console.", CONSOLE_DEV);
			return 1;
		}
	}

	console = fopen(CONSOLE_DEV, "r");
	if(!console)
	{
		doQuit("couldn't open jail console: %s", strerror(errno));
		return 1;
	}

	fcopy(stdout, console);
	return 0;
}

void doQuit(const char* msg, ...)
{
	va_list ap;
	va_start(ap, msg);

	vwarnx(msg, ap);

	exit(2);

	va_end(ap);
}

void doWarn(const char* msg, ...)
{
	va_list ap;
	va_start(ap, msg);

	/* Either to syslog or stderr */
	vwarnx(msg, ap);

	va_end(ap);
}


static int fcopy(FILE* dest, FILE* src)
{
	char buff[32];
	size_t bytes = 0;

	while(!feof(src) && !ferror(src) && !ferror(dest))
	{
		bytes = fread(buff, 1, 32, src);
		fwrite(buff, 1, bytes, dest);
	}

	if(ferror(src) || ferror(dest))
		return -1;

	return 0;
}