/* $OpenBSD$ */

/*
* Copyright (c) 2009 Nicholas Marriott <[email protected]>
*
* 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 MIND, 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.
*/

#include <sys/param.h>
#include <sys/stat.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "tmux.h"

char *
osdep_get_name(int fd, __unused char *tty)
{
       FILE    *f;
       char    *path, *buf;
       size_t   len;
       int      ch;
       pid_t    pgrp;

       if ((pgrp = tcgetpgrp(fd)) == -1)
               return (NULL);

       xasprintf(&path, "/proc/%lld/cmdline", (long long) pgrp);
       if ((f = fopen(path, "r")) == NULL) {
               free(path);
               return (NULL);
       }
       free(path);

       len = 0;
       buf = NULL;
       while ((ch = fgetc(f)) != EOF) {
               if (ch == '\0')
                       break;
               buf = xrealloc(buf, len + 2);
               buf[len++] = ch;
       }
       if (buf != NULL)
               buf[len] = '\0';

       fclose(f);
       return (buf);
}

char *
osdep_get_cwd(int fd)
{
       static char      target[MAXPATHLEN + 1];
       char            *path;
       pid_t            pgrp;
       ssize_t          n;

       if ((pgrp = tcgetpgrp(fd)) == -1)
               return (NULL);

       xasprintf(&path, "/proc/%lld/cwd", (long long) pgrp);
       n = readlink(path, target, MAXPATHLEN);
       free(path);
       if (n > 0) {
               target[n] = '\0';
               return (target);
       }
       return (NULL);
}

struct event_base *
osdep_event_init(void)
{
       return (event_init());
}