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/*
* wserv.c - little program to be a pipe between a screen or
* xterm window to the calling ircII process.
*
* Copyright (c) 1992, Troy Rollo.
* Copyright (c) 1993, Matthew Green.
*
* Works by opening up the unix domain socket that ircII bind's
* before calling wserv, and which ircII also deleted after the
* connection has been made.
*/
#ifndef lint
static char rcsid[] = "@(#)$Id: wserv.c,v 1.21 1997/01/17 19:53:54 mrg Exp $";
#endif /* lint */
#include "defs.h"
#ifdef HAVE_SYS_UN_H
# include "irc.h"
# include "ircterm.h"
# include <sys/un.h>
/*
* Holds the parent process id, as taken from the command line arguement.
* We can't use getppid() here, because the parent for screen is the
* underlying screen process, and for xterm's, it the xterm itself.
*/
static pid_t ircIIpid;
/* declare the signal handler */
# if !defined(_RT) && defined(SIGWINCH)
# if defined(_POSIX_VERSION)
RETSIGTYPE got_sigwinch _((int));
# else
RETSIGTYPE got_sigwinch _((void));
# endif /* _POSIX_VERSION */
# endif /* _RT && SIGWINCH */
int
main(argc, argv)
int argc;
char **argv;
{
char buffer[1024];
struct sockaddr_un *addr = (struct sockaddr_un *) buffer;
int nread;
fd_set reads;
int s;
char *path,
*tmp;
/* Set up the signal hander to pass SIGWINCH to ircII */
# if !defined(_RT) && defined(SIGWINCH)
(void) MY_SIGNAL(SIGWINCH, (sigfunc *)got_sigwinch, 0);
# endif /* _RT && SIGWINCH */
if (2 != argc) /* no socket is passed */
exit(0);
#ifdef SOCKS
SOCKSinit(*argv);
#endif /* SOCKS */
/*
* First thing we do here is grab the parent pid from the command
* line arguements, because getppid() returns the wrong pid in
* all cases.. is comes in via the command line arguement in the
* for of irc_xxxxxxxx .. as an 8 digit decimal number.. if we
* can't get the pid from the command line arg, then we set it
* to -1, which is used later to ignore them..
*/
path = (char *) malloc(strlen(argv[1]) + 1);
strcpy(path, argv[1]);
if ((char *) 0 != (tmp = (char *) index(path, '_')))
ircIIpid = atoi(++tmp);
else
ircIIpid = -1;
/*
* Set up the socket, from the path passed, connect it.. all that
* stuff.. And initalise the term settings for the window.
*/
addr->sun_family = AF_UNIX;
strcpy(addr->sun_path, argv[1]);
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (0 > connect(s, (struct sockaddr *) addr, sizeof(addr->sun_family) +
strlen(addr->sun_path)))
exit(0);
/*
* first line to for a wserv program is the tty. this is so ircii
* can grab the size of the tty, and have it changed.
*/
tmp = ttyname(0);
write(s, tmp, strlen(tmp));
write(s, "\n", 1);
perror(tmp);
term_init();
/*
* The select call.. reads from the socket, and from the window..
* and pipes the output from out to the other.. nice and simple
*/
while (1)
{
FD_ZERO(&reads);
FD_SET(0, &reads);
FD_SET(s, &reads);
select(s + 1, &reads, (fd_set *) 0, (fd_set *) 0,
(struct timeval *) 0);
if (FD_ISSET(0, &reads))
{
if (0 != (nread = read(0, buffer, sizeof(buffer))))
write(s, buffer, nread);
else
exit(0);
}
if (FD_ISSET(s, &reads))
{
if (0 != (nread = read(s, buffer, sizeof(buffer))))
write(0, buffer, nread);
else
exit(0);
}
}
}
/* got_sigwinch: we got a SIGWINCH, so we send it back to ircII */
# if !defined(_RT) && defined(SIGWINCH)
RETSIGTYPE
# if defined(_POSIX_VERSION)
got_sigwinch(sig)
# else
got_sigwinch(sig)
# endif /* _POSIX_VERSION */
{
# ifdef SYSVSIGNALS
(void) MY_SIGNAL(SIGWINCH, got_sigwinch, 0);
# endif /* SYSVSIGNALS */
if (-1 != ircIIpid)
kill(ircIIpid, SIGWINCH);
}
# endif /* _RT */
#else
int
main()
{
exit(0);
}
#endif /* HAVE_SYS_UH_H */
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