* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
static char sccsid
[] = "@(#)announce.c 5.1 (Berkeley) 6/6/85";
int nofork
= 0; /* to be set from the debugger */
* Because the tty driver insists on attaching a terminal-less
* process to any terminal that it writes on, we must fork a child
announce(request
, remote_machine
)
return(announce_proc(request
, remote_machine
));
/* we are the parent, so wait for the child */
if (pid
== -1) /* the fork failed */
if (status
&0377 > 0) /* we were killed by some signal */
/* Get the second byte, this is the exit/return code */
return ((status
>> 8) & 0377);
/* we are the child, go and do it */
_exit(announce_proc(request
, remote_machine
));
* See if the user is accepting messages. If so, announce that
announce_proc(request
, remote_machine
)
(void) sprintf(full_tty
, "/dev/%s", request
->r_tty
);
if (access(full_tty
, 0) != 0)
if ((tf
= fopen(full_tty
, "w")) == NULL
)
return (PERMISSION_DENIED
);
* Open gratuitously attaches the talkd to
* any tty it opens, so disconnect us from the
* tty before we catch a signal
ioctl(fileno(tf
), TIOCNOTTY
, (struct sgttyb
*) 0);
if (fstat(fileno(tf
), &stbuf
) < 0)
return (PERMISSION_DENIED
);
if ((stbuf
.st_mode
&020) == 0)
return (PERMISSION_DENIED
);
print_mesg(tf
, request
, remote_machine
);
#define max(a,b) ( (a) > (b) ? (a) : (b) )
* Build a block of characters containing the message.
* It is sent blank filled and in a single block to
* try to keep the message in one piece if the recipient
print_mesg(tf
, request
, remote_machine
)
char line_buf
[N_LINES
][N_CHARS
];
char big_buf
[N_LINES
*N_CHARS
];
gettimeofday(&clock
, &zone
);
localclock
= localtime( &clock
.tv_sec
);
sprintf(line_buf
[i
], " ");
sizes
[i
] = strlen(line_buf
[i
]);
max_size
= max(max_size
, sizes
[i
]);
sprintf(line_buf
[i
], "Message from Talk_Daemon@%s at %d:%02d ...",
hostname
, localclock
->tm_hour
, localclock
->tm_min
);
sizes
[i
] = strlen(line_buf
[i
]);
max_size
= max(max_size
, sizes
[i
]);
sprintf(line_buf
[i
], "talk: connection requested by %s@%s.",
request
->l_name
, remote_machine
);
sizes
[i
] = strlen(line_buf
[i
]);
max_size
= max(max_size
, sizes
[i
]);
sprintf(line_buf
[i
], "talk: respond with: /usr/old/talk %s@%s",
request
->l_name
, remote_machine
);
sizes
[i
] = strlen(line_buf
[i
]);
max_size
= max(max_size
, sizes
[i
]);
sprintf(line_buf
[i
], " ");
sizes
[i
] = strlen(line_buf
[i
]);
max_size
= max(max_size
, sizes
[i
]);
*(bptr
++) = '\a'; /* send something to wake them up */
*(bptr
++) = '\r'; /* add a \r in case of raw mode */
for (i
= 0; i
< N_LINES
; i
++) {
/* copy the line into the big buffer */
/* pad out the rest of the lines with blanks */
for (j
= sizes
[i
]; j
< max_size
+ 2; j
++)
*(bptr
++) = '\r'; /* add a \r in case of raw mode */
ioctl(fileno(tf
), TIOCNOTTY
, (struct sgttyb
*) 0);