mirror of
https://github.com/GnoConsortium/gno.git
synced 2025-01-20 21:29:49 +00:00
This is write version 2.1 from 8 March 1994. The manual page has been
converted from preformatted ascii to nroff source. Leslie's email address was also updated.
This commit is contained in:
gdr-ftp
parent
f91ed7c806
commit
b8915c9cd4
25
usr.bin/write/README
Normal file
25
usr.bin/write/README
Normal file
@ -0,0 +1,25 @@
|
||||
write v2.1 README file.
|
||||
|
||||
write v2.1 _requires_ at least GNO v2.0.5 or the multi-user update.
|
||||
|
||||
What's changed:
|
||||
- changed error messages to go to stderr (previously to stdout).
|
||||
- added several checks on ut_type to insure validation of utmp entry and
|
||||
not write to entries marked UT_INVISIBLE.
|
||||
- fixed bug which would have caused problems in an fputs() command iff
|
||||
the length of the line name was the maximum allowed.
|
||||
- have it on authority that the CRs appended to the ends of the output
|
||||
lines will be correctly translated. This was questionable when 2.0 was
|
||||
sent out.
|
||||
|
||||
Special thanks to Phil Vandry again for suggestions - he sent me source after
|
||||
the MU upgrade, but it got corrupted. He sent me a new copy, and I used it to
|
||||
modify the new code. Thanks :-)
|
||||
|
||||
Please send all requests to:
|
||||
America On-Line: WDPhoenix (@aol.com)
|
||||
Delphi: WDPHOENIX (@delphi.com)
|
||||
US Snail: Les Barstow
|
||||
275 Route 10 East
|
||||
Suite 220-136
|
||||
Succasunna, NJ 07876
|
||||
42
usr.bin/write/write.1
Normal file
42
usr.bin/write/write.1
Normal file
@ -0,0 +1,42 @@
|
||||
.\" Man page converted from formatted ascii to nroff source by
|
||||
.\" Devin Reade, 10 April 1998.
|
||||
.\"
|
||||
.\" $Id: write.1,v 1.1 1998/04/10 20:03:53 gdr-ftp Exp $
|
||||
.\"
|
||||
.TH WRITE 1 "8 March 1994" GNO "Commands and Applications"
|
||||
.SH NAME
|
||||
write \- write messages to a user's terminal
|
||||
.SH SYNOPSIS
|
||||
.B write
|
||||
.IR username " [" message ]
|
||||
.SH DESCRIPTION
|
||||
.BR write
|
||||
writes messages to all terminals belonging to
|
||||
.IR username .
|
||||
If an optional
|
||||
.I message
|
||||
is included on the command line, then that message is the one sent to the
|
||||
user. If no message is included on the command line,
|
||||
.BR write
|
||||
takes input from standard input until a blank line is encountered.
|
||||
It sends each line of input as it is received.
|
||||
.SH ERRORS
|
||||
.BR write
|
||||
returns in error if the user does not exist or if the user is not
|
||||
currently signed on. Executing
|
||||
.BR write
|
||||
with no arguments or with an option argument returns a usage message.
|
||||
.SH BUGS
|
||||
Old versions of the GNO multiuser package are incompatible with this version of
|
||||
.BR write ;
|
||||
use
|
||||
.BR write
|
||||
version 1.0 if you have not updated the multiuser package.
|
||||
.SH OTHER
|
||||
This program is Copyright 1993, 1994 by Leslie M. Barstow III.
|
||||
It may be distributed freely provided it is accompanied by this manpage.
|
||||
write uses routines from the ORCA Libraries, Copyright by ByteWorks, Inc.
|
||||
.SH AUTHOR
|
||||
Leslie Barstow, <phoenix@faerealm.faerealm.com>.
|
||||
.SH FILES
|
||||
/var/adm/utmp
|
||||
@ -1,11 +1,18 @@
|
||||
/* write.cc - UNIX-like write utility. Send message to terminal. */
|
||||
/* Copyright 1993 by Leslie M. Barstow III */
|
||||
/* Placed in the Public Domain with the following condition:
|
||||
Please retain original Copyright in source, program, and manpage. */
|
||||
/* Copyright 1993, 1994 by Leslie M. Barstow III */
|
||||
/* This program is Freeware: Distribute and modify as you like, but
|
||||
please retain original Copyright in source, program, and manpage. */
|
||||
|
||||
/* v1.0 - original release */
|
||||
/* v1.1 - 2/2/94 updated for new Multi-User package using wtmp */
|
||||
/* v2.0 - 2/21/94 fixed several bugs, added date to message. */
|
||||
/* v2.1 - 3/8/94 changed errors to stderr, fixed some errors, added TZ.
|
||||
changes taken in part from Phil Vandry's sample code -
|
||||
Thanks, Phil :-) */
|
||||
|
||||
#pragma optimize -1
|
||||
#pragma debug 0
|
||||
#pragma stacksize 1024
|
||||
#pragma stacksize 768
|
||||
|
||||
#define O_WRONLY 0x0002
|
||||
|
||||
@ -17,26 +24,31 @@
|
||||
#include <orca.h>
|
||||
#include <utmp.h>
|
||||
#include <fcntl.h>
|
||||
#include <pwd.h>
|
||||
#include <unistd.h>
|
||||
#include <texttool.h>
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
void Usage(void)
|
||||
{fputs("usage: write username [message]\n",stdout);
|
||||
fputs("GS write: Copyright 1993 by Leslie M. Barstow III.\n", stdout);
|
||||
fputs("GS write v2.1: Copyright 1994 by Leslie M. Barstow III.\n", stdout);
|
||||
}
|
||||
|
||||
int userTTY(char *user, int **list)
|
||||
{int fd, tmp;
|
||||
struct utmp uentry;
|
||||
static struct utmp uentry;
|
||||
static char tmpline[UT_LINESIZE+1];
|
||||
int count = 0;
|
||||
int *newlist;
|
||||
fd=open(_PATH_UTMP, 257);
|
||||
if (fd < 1)
|
||||
{fputs("write - unable to retrieve current users.\n", stdout);
|
||||
{fputs("write - unable to retrieve current users.\n", stderr);
|
||||
exit(-1);
|
||||
}
|
||||
do
|
||||
{tmp = read(fd, (void *)(&uentry), sizeof(uentry));
|
||||
if (tmp)
|
||||
{if (!strncmp(uentry.ut_name,user,strlen(user)))
|
||||
if (tmp && uentry.ut_type && !(uentry.ut_type & UT_INVISIBLE))
|
||||
{if (!strncmp(uentry.ut_name,user,UT_NAMESIZE))
|
||||
{count++;
|
||||
newlist = (int *)realloc(*list, count *2);
|
||||
if (newlist == (int *)0L)
|
||||
@ -44,15 +56,17 @@ int userTTY(char *user, int **list)
|
||||
close((*list)[tmp-1]);
|
||||
free(*list);
|
||||
close(fd);
|
||||
fputs("write - unable to allocate memory.\n", stdout);
|
||||
fputs("write - unable to allocate memory.\n", stderr);
|
||||
exit(-1);
|
||||
}
|
||||
*list = newlist;
|
||||
(*list)[count-1] = open(uentry.ut_line, 0x0002);
|
||||
if ((*list)[count-1] < 1)
|
||||
{fputs("write - unable to open terminal ",stdout);
|
||||
fputs(uentry.ut_line, stdout);
|
||||
fputs(".\n", stdout);
|
||||
{fputs("write - unable to open terminal ",stderr);
|
||||
strncpy(tmpline, uentry.ut_line, UT_LINESIZE);
|
||||
tmpline[UT_LINESIZE] = '\0';
|
||||
fputs(tmpline, stderr);
|
||||
fputs(".\n", stderr);
|
||||
count--;
|
||||
}
|
||||
}
|
||||
@ -68,64 +82,63 @@ int main(int argc, char **argv)
|
||||
{int count;
|
||||
int i;
|
||||
int j = 2;
|
||||
char *line, *uname;
|
||||
time_t Time;
|
||||
char *cTime;
|
||||
char *uname;
|
||||
int *fdlist = (int *)0L;
|
||||
uid_t uid;
|
||||
int doEcho;
|
||||
struct passwd *pwent;
|
||||
static char line [512];
|
||||
|
||||
if (argc > 3)
|
||||
|
||||
if ((argc < 2) || (argc > 3) || (argv[1][0] == '-'))
|
||||
{Usage();
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
uid = getuid();
|
||||
pwent = getpwuid(uid);
|
||||
uname = pwent->pw_name;
|
||||
Time = time(0L);
|
||||
cTime = ctime(&Time);
|
||||
|
||||
count = userTTY(argv[1], &fdlist);
|
||||
if (count < 1)
|
||||
{fputs("write - no active terminals for user.\n", stderr);
|
||||
exit(-1);
|
||||
}
|
||||
for (i = 0; i < count; i++)
|
||||
{write(fdlist[i], "\r\aMessage from ", 15);
|
||||
write(fdlist[i], uname, strlen(uname));
|
||||
write(fdlist[i], " at ", 4);
|
||||
write(fdlist[i], cTime, strlen(cTime));
|
||||
write(fdlist[i], "\r", 1);
|
||||
}
|
||||
|
||||
/* message on command line - write it and exit */
|
||||
|
||||
if (argc == 3)
|
||||
{count = userTTY(argv[1], &fdlist);
|
||||
if (count < 1)
|
||||
{fputs("write - no active terminals for user.\n", stdout);
|
||||
exit(-1);
|
||||
{for (i = 0; i < count; i++)
|
||||
{write(fdlist[i], argv[2], strlen(argv[2]));
|
||||
write(fdlist[i], "\r", 1);
|
||||
close(fdlist[i]);
|
||||
}
|
||||
exit(0);
|
||||
}
|
||||
|
||||
uname = getenv("user");
|
||||
for (i = 0; i < count; i++)
|
||||
{write(fdlist[i], "\n\aMessage from ", 15);
|
||||
write(fdlist[i], uname, strlen(uname));
|
||||
write(fdlist[i], ".\r\n", 3);
|
||||
write(fdlist[i], argv[2], strlen(argv[2]));
|
||||
write(fdlist[i], "\r\n", 2);
|
||||
}
|
||||
for (i = 0; i < count; i++)
|
||||
close(fdlist[i]);
|
||||
exit(0);
|
||||
}
|
||||
if ((argc == 2) && (argv[1][0] != '-')) /* enter read loop */
|
||||
{line = (char *)malloc(256);
|
||||
if (line == (char *)0L)
|
||||
{fputs("write - error allocating buffer.\n", stdout);
|
||||
exit(-1);
|
||||
}
|
||||
count = userTTY(argv[1], &fdlist);
|
||||
if (count < 1)
|
||||
{fputs("write - no active terminals for user.\n", stdout);
|
||||
free(line);
|
||||
exit(-1);
|
||||
}
|
||||
uname = getenv("user");
|
||||
for(i = 0; i < count; i++)
|
||||
{write(fdlist[i], "\n\aMessage from ", 15);
|
||||
write(fdlist[i], uname, strlen(uname));
|
||||
write(fdlist[i], ".\r\n", 3);
|
||||
}
|
||||
while (j > 1)
|
||||
{fgets(line, 256, stdin);
|
||||
j = strlen(line);
|
||||
for (i = 0; i< count; i++)
|
||||
write(fdlist[i], line, j);
|
||||
|
||||
}
|
||||
free(line);
|
||||
for (i = 0; i < count; i++)
|
||||
close(fdlist[i]);
|
||||
exit(0);
|
||||
}
|
||||
else
|
||||
{Usage();
|
||||
exit(-1);
|
||||
}
|
||||
/* No message on command line - read from stdin */
|
||||
|
||||
while (j = ReadLine(line, 512, '\r', 0))
|
||||
{for (i = 0; i< count; i++)
|
||||
{write(fdlist[i], line, j);
|
||||
write(fdlist[i], "\r", 1);
|
||||
}
|
||||
}
|
||||
for (i = 0; i < count; i++)
|
||||
write(fdlist[i], "\r<EOT>\r", 7);
|
||||
free(line);
|
||||
for (i = 0; i < count; i++)
|
||||
close(fdlist[i]);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user