lenny@icus.islp.ny.us (Lenny Tropiano) (10/24/89)
I know this was posted a while back, but for the benefit of those who
don't know about it, here it is again. I also made a *FEW* changes to
the program so that it will only call (exec) your mailer ONCE, if it
is already running. If it is already running, as suggested by Todd Day,
I should just select that window. Well that's what I did. It prevents
those obnoxious messages from elm, saying that a temporary lock file is
out there (when you have <MSG> key bouncing )... blah, blah, blah ...
-- cut here -- -- cut here -- -- cut here -- -- cut here -- -- cut here --
#! /bin/sh
# This is a shell archive. Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file". To overwrite existing
# files, type "sh file -c". You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g.. If this archive is complete, you
# will see the following message at the end:
# "End of shell archive."
# Contents: Makefile email.c
# Wrapped by lenny@icus on Tue Oct 24 00:54:23 1989
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f Makefile -a "${1}" != "-c" ; then
echo shar: Will not over-write existing file \"Makefile\"
else
echo shar: Extracting \"Makefile\" \(760 characters\)
sed "s/^X//" >Makefile <<'END_OF_Makefile'
X#
X# Makefile to compile email.c (Security fix, and exec your favorite mailer)
X# By Lenny Tropiano
X# (c)1989 ICUS Software Systems UUCP: ...icus!lenny -or- lenny@icus.islp.ny.us
X#
XLDFLAGS=-s
XLIBS=/lib/crt0s.o /lib/shlib.ifile
X#
X# Define the name of your favorite mailer
X#
XPROGNAME=elm
X#
X# Define the full path to your favorite mailer
X#
XPROGPATH=/usr/lbin/elm
X#
X# Define the label of your mail window
X#
XWIND_LABEL="Mail Window"
X#
XCFLAGS=-v -O -DPROGNAME=\"$(PROGNAME)\" -DPROGPATH=\"$(PROGPATH)\" -DWIND_LABEL=\"$(WIND_LABEL)\"
X
Xemail: email.o
X @echo "Loading ..."
X $(LD) $(LDFLAGS) -o email email.o $(LIBS)
X#
Xinstall: email
X mv email /usr/bin/email
X chown bin /usr/bin/email
X chgrp mail /usr/bin/email
X chmod 511 /usr/bin/email
Xclean:
X rm -f email *.o core
END_OF_Makefile
if test 760 -ne `wc -c <Makefile`; then
echo shar: \"Makefile\" unpacked with wrong size!
fi
# end of overwriting check
fi
if test -f email.c -a "${1}" != "-c" ; then
echo shar: Will not over-write existing file \"email.c\"
else
echo shar: Extracting \"email.c\" \(4597 characters\)
sed "s/^X//" >email.c <<'END_OF_email.c'
X/************************************************************************\
X** **
X** Program name: email.c (Security fix and exec favorate mailer) **
X** Programmer: Lenny Tropiano **
X** E-Mail address: ...!icus!lenny -or- lenny@icus.islp.ny.us **
X** Organization: ICUS Software Systems (c)1987,1989 **
X** Date: December 4, 1987 **
X** Revision: October 24, 1989 **
X** **
X**************************************************************************
X** **
X** Program use: If the program is placed in the /usr/bin directory **
X** /etc/smgr (Status Manager) will find this first, and **
X** will try to exec it when the <MSG> button is pressed **
X** and the <Mail ICON> is visible. **
X** **
X** This program will allow you to run your favorite **
X** mailer (mine is elm, but substitute yours in the **
X** appropriate spots in the Makefile). If for some **
X** your mailer cannot be exec'd, it will default to **
X** /bin/mail. **
X** **
X** As per a suggestion on the net, by Todd Day **
X** (todd@ivucsb.sba.ca.us <Todd Day>), Message-ID: **
X** <1989Oct22.000322.1187@ivucsb.sba.ca.us>, he requested **
X** that subsequent pressing of the <MSG> key doesn't **
X** re-exec another copy of your mailer, but if it is **
X** already running, find that window and select it. **
X** I thought this was a good idea, implemented it, and **
X** here you go! **
X** **
X** Disclaimer: If you are running the AT&T Electronic Mail package **
X** do not install this program, it will overwrite the **
X** package (which is called /usr/bin/email). **
X** **
X**************************************************************************
X** Permission is granted to distribute this program by any means as **
X** long as credit is given for my work. I would also like to see **
X** any modifications or enhancements to this program. **
X\************************************************************************/
X
X#include <stdio.h>
X#include <pwd.h>
X#include <fcntl.h>
X#include <sys/types.h>
X#include <sys/window.h>
X
X#ifndef PROGNAME
X# define PROGNAME "elm"
X#endif
X#ifndef PROGPATH
X# define PROGPATH "/usr/lbin/elm"
X#endif
X#ifndef WIND_LABEL
X# define WIND_LABEL "Mail Window" /* window label */
X#endif
X
X#define NUM_WIN 12 /* max number of windows */
X
Xextern char **environ;
Xstruct utdata ut;
X
Xmain(argc,argv)
Xint argc;
Xchar *argv[];
X{
X /* email is exec'd from smgr with /usr/bin/email -i -u <user> */
X
X struct passwd *pswd, *getpwnam();
X char arg[30], home[30], shell[30], mail[30];
X
X if (argv[1] == NULL)
X exit(1);
X
X check_window();
X
X setpwent();
X if ((pswd = getpwnam(argv[3])) == NULL)
X exit(1);
X
X setgid(pswd->pw_gid);
X setuid(pswd->pw_uid);
X
X putenv("PATH=:/bin:/usr/bin:/usr/lbin:");
X sprintf(home,"HOME=%s",pswd->pw_dir);
X chdir(pswd->pw_dir);
X putenv(home);
X sprintf(shell,"SHELL=%s",pswd->pw_shell);
X putenv(shell);
X putenv("TERM=s4");
X sprintf(mail,"MAIL=/usr/mail/%s",pswd->pw_name);
X putenv(mail);
X endpwent();
X
X ut.ut_num = WTXTUSER;
X sprintf(ut.ut_text,WIND_LABEL);
X (void)ioctl(0, WIOCSETTEXT, &ut);
X
X execle(PROGPATH,PROGNAME,0,environ);
X execle("/bin/mail",0,environ);
X perror("exec() failed");
X exit(1);
X}
X
X
Xcheck_window()
X{
X int wfd, win;
X char windev[9];
X
X for (win=1;win<=NUM_WIN;win++) {
X sprintf(windev,"/dev/w%d",win);
X if ((wfd = open(windev, O_RDONLY)) != -1) {
X ut.ut_num = WTXTUSER;
X if (ioctl(wfd, WIOCGETTEXT, &ut) != -1)
X if (strcmp(ut.ut_text,WIND_LABEL) == 0) {
X (void)ioctl(wfd, WIOCSELECT);
X close(wfd);
X exit(0);
X }
X }
X close(wfd);
X }
X}
X
END_OF_email.c
if test 4597 -ne `wc -c <email.c`; then
echo shar: \"email.c\" unpacked with wrong size!
fi
# end of overwriting check
fi
echo shar: End of shell archive.
exit 0
--
| Lenny Tropiano ICUS Software Systems [w] +1 (516) 589-7930 |
| lenny@icus.islp.ny.us Telex; 154232428 ICUS [h] +1 (516) 968-8576 |
| {ames,pacbell,decuac,hombre,sbcs,attctc}!icus!lenny attmail!icus!lenny |
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