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/* $Id$ */
/***
This file is part of bidilink.
bidilink is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
bidilink is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with bidilink; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include "server-tty.h"
static void destruct(struct stream *s) {
assert(s && s->user);
if (unlink((char*) s->user) < 0)
fprintf(stderr, "WARNING: unlink(): %s\n", strerror(errno));
free(s->user);
}
struct stream* stream_server_tty(const char *args) {
struct stream *s = NULL;
int fd = -1;
char *n;
s = malloc(sizeof(struct stream));
assert(s);
memset(s, 0, sizeof(struct stream));
#ifdef HAVE_POSIX_OPENPT
fd = posix_openpt(O_RDWR|O_NOCTTY);
#else
fd = open("/dev/ptmx", O_RDWR|O_NOCTTY);
#endif
if (fd < 0) {
fprintf(stderr, "open('/dev/ptmx', O_RDWR|O_NOCTTY): %s\n", strerror(errno));
goto fail;
}
if (grantpt(fd) < 0) {
fprintf(stderr, "grantpt(): %s\n", strerror(errno));
goto fail;
}
if (unlockpt(fd) < 0) {
fprintf(stderr, "grantpt(): %s\n", strerror(errno));
goto fail;
}
if (!(n = ptsname(fd)) < 0) {
fprintf(stderr, "ptsname(): %s\n", strerror(errno));
goto fail;
}
if (args) {
if (symlink(n, args) < 0) {
fprintf(stderr, "symlink('%s', '%s'): %s\n", n, args, strerror(errno));
goto fail;
}
} else
fprintf(stderr, "Allocated pseudo tty '%s'.\n", n);
s->user = strdup(args);
s->destruct = destruct;
s->input_fd = s->output_fd = fd;
return s;
fail:
free(s);
if (fd >= 0)
close(fd);
return NULL;
}
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