vuser - a virtual user program
Jeff Lawhorn
jeffl at berick.uucp
Sat Dec 30 06:17:12 AEST 1989
The attached shar contains the source to the vuser program. It
is a program that records the user input, and the program
responses so that the session can be replayed at a future time.
I originally wrote it to test the uipc library for the unix pc.
I then used it to playback a fairly long interactive session
several times concurrently to see what kind of load the machine
could take.
Vuser is known to run on the UnixPC (with the uipc
library/driver) and on Sun 3s running SunOS 3.5 under both X and
Suntools.
Vuser is covered by the GPL (see the file COPYING for details).
----- Cut Here -----
#! /bin/sh
# This is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line.
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh (not csh) to create the files:
# COPYING
# Makefile
# README
# TODO
# havefun.c
# main.c
# pty.c
# slave.c
# tty.c
# This archive created: Fri Dec 29 11:06:30 1989
export PATH; PATH=/bin:$PATH
echo shar: extracting "'COPYING'" '(12488 characters)'
if test -f 'COPYING'
then
echo shar: will not over-write existing file "'COPYING'"
else
sed 's/^X//' << \SHAR_EOF > 'COPYING'
X
X GNU GENERAL PUBLIC LICENSE
X Version 1, February 1989
X
X Copyright (C) 1989 Free Software Foundation, Inc.
X 675 Mass Ave, Cambridge, MA 02139, USA
X Everyone is permitted to copy and distribute verbatim copies
X of this license document, but changing it is not allowed.
X
X Preamble
X
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XLicense is intended to guarantee your freedom to share and change free
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Xsoftware and to any other program whose authors commit to using it.
XYou can use it for your programs, too.
X
X When we speak of free software, we are referring to freedom, not
Xprice. Specifically, the General Public License is designed to make
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Xsoftware, that you receive source code or can get it if you want it,
Xthat you can change the software or use pieces of it in new free
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Xanyone to deny you these rights or to ask you to surrender the rights.
XThese restrictions translate to certain responsibilities for you if you
Xdistribute copies of the software, or if you modify it.
X
X For example, if you distribute copies of a such a program, whether
Xgratis or for a fee, you must give the recipients all the rights that
Xyou have. You must make sure that they, too, receive or can get the
Xsource code. And you must tell them their rights.
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X We protect your rights with two steps: (1) copyright the software, and
X(2) offer you this license which gives you legal permission to copy,
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X Also, for each author's protection and ours, we want to make certain
Xthat everyone understands that there is no warranty for this free
Xsoftware. If the software is modified by someone else and passed on, we
Xwant its recipients to know that what they have is not the original, so
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X GNU GENERAL PUBLIC LICENSE
X TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
X
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Xcontains a notice placed by the copyright holder saying it may be
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X"Program", below, refers to any such program or work, and a "work based
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XProgram or a portion of it, either verbatim or with modifications. Each
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X
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XPOSSIBILITY OF SUCH DAMAGES.
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Xpossible use to humanity, the best way to achieve this is to make it
Xfree software which everyone can redistribute and change under these
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X To do so, attach the following notices to the program. It is safest to
Xattach them to the start of each source file to most effectively convey
Xthe exclusion of warranty; and each file should have at least the
X"copyright" line and a pointer to where the full notice is found.
X
X <one line to give the program's name and a brief idea of what it does.>
X Copyright (C) 19yy <name of author>
X
X This program is free software; you can redistribute it and/or modify
X it under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your option)
X any later version.
X
X This program is distributed in the hope that it will be useful,
X but WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X GNU General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with this program; if not, write to the Free Software
X Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X
XAlso add information on how to contact you by electronic and paper mail.
X
XIf the program is interactive, make it output a short notice like this
Xwhen it starts in an interactive mode:
X
X Gnomovision version 69, Copyright (C) 19xx name of author
X Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
X This is free software, and you are welcome to redistribute it
X under certain conditions; type `show c' for details.
X
XThe hypothetical commands `show w' and `show c' should show the
Xappropriate parts of the General Public License. Of course, the
Xcommands you use may be called something other than `show w' and `show
Xc'; they could even be mouse-clicks or menu items--whatever suits your
Xprogram.
X
XYou should also get your employer (if you work as a programmer) or your
Xschool, if any, to sign a "copyright disclaimer" for the program, if
Xnecessary. Here a sample; alter the names:
X
X Yoyodyne, Inc., hereby disclaims all copyright interest in the
X program `Gnomovision' (a program to direct compilers to make passes
X at assemblers) written by James Hacker.
X
X <signature of Ty Coon>, 1 April 1989
X Ty Coon, President of Vice
X
XThat's all there is to it!
SHAR_EOF
if test 12488 -ne "`wc -c < 'COPYING'`"
then
echo shar: error transmitting "'COPYING'" '(should have been 12488 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'Makefile'" '(1405 characters)'
if test -f 'Makefile'
then
echo shar: will not over-write existing file "'Makefile'"
else
sed 's/^X//' << \SHAR_EOF > 'Makefile'
X# Makefile - This file contains the make rules for the vuser program.
X#
X# Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X#
X# This file is part of vuser.
X#
X# vuser is free software; you can redistribute it and/or modify it
X# under the terms of the GNU General Public License as published by
X# the Free Software Foundation; either version 1, or (at your
X# option) any later version.
X#
X# vuser is distributed in the hope that it will be useful, but
X# WITHOUT ANY WARRANTY; without even the implied warranty of
X# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X# General Public License for more details.
X#
X# You should have received a copy of the GNU General Public License
X# along with GNU CC; see the file COPYING. If not, write to the
X# Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X
X# $Id: Makefile,v 1.1 89/12/15 21:31:56 jeffl Exp $
X
X#
X# Define SYSV when compiling on System V.
X# Define TIMEOUT_IS_LONG if your timeout value in select is a long
X# rather than a struct timeval.
X
X# CFLAGS = -O -DSYSV -DTIMEOUT_IS_LONG
XCFLAGS = -g
X
X# some of us use smart C compilers.
XCC=gcc
X
X# add any machine specific libraries you need to link to get select.
X# LIBS = -luipc
XLIBS =
X
XCFILES = main.c pty.c tty.c slave.c havefun.c
XOFILES = main.o pty.o tty.o slave.o havefun.o
X
Xvuser: $(OFILES)
X $(CC) -o vuser $(OFILES) $(LIBS)
SHAR_EOF
if test 1405 -ne "`wc -c < 'Makefile'`"
then
echo shar: error transmitting "'Makefile'" '(should have been 1405 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'README'" '(1942 characters)'
if test -f 'README'
then
echo shar: will not over-write existing file "'README'"
else
sed 's/^X//' << \SHAR_EOF > 'README'
X
X The vuser program is intended to be used to replay
Xinteractive sessions. It does this by recording the users key
Xstrokes and the systems responses, and then replaying the
Xsequences at a later time.
X
Xvuser understands the following options:
X
X -p num Set the recorded prompt length to num characters.
X Default is 10.
X
X -t num Send the non-interactive timeout to be num seconds.
X If the expected prompt is not seen in that
X amount of time, vuser will procced as if the
X prompt had been seen. Setting the timeout to 0
X will cause vuser to wait forever for a prompt.
X Default is 30 seconds.
X
X -s name Generate a script file to the file named name for
X future playback. The default is not to generate
X a script file.
X
X -r name Record all characters sent to the standard output
X in the file named name. The default is not to
X record the characters sent to the standard output.
X
X -e Use the rest of the command line as the command
X to run rather than the program specified by the
X environment variable SHELL. If SHELL is not set,
X then the default is /bin/sh.
X
X -l user host Shorthand for ``-e rlogin host -l user''.
X
XIf either -e or -l is specified, it must be the last option on
Xthe command line.
X
X To replay a session at a later time, run vuser with the
Xsame command line options as for the interactive session, but do
Xnot specify -s, and redirect the input from the script file that
Xwas generated during the interactive session.
X
X
XExamples:
X
XTo run vuser interactively and generate a script file for later
Xreplaying, you would use a command similar to:
X
X vuser -s script.in -e bash
X
XThis will run the program bash, recording what the user types,
Xand what the program sends back. When bash terminates, vuser
Xwill also terminate. To replay the session at a later time you
Xwould use the command:
X
X vuser -e bash <script.in
X
X
XComments/Sugestions/Enhancements should be sent to jeffl at berick.uucp
Xor ...!ucsd!sdsu!berick!jeffl.
X
SHAR_EOF
if test 1942 -ne "`wc -c < 'README'`"
then
echo shar: error transmitting "'README'" '(should have been 1942 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'TODO'" '(353 characters)'
if test -f 'TODO'
then
echo shar: will not over-write existing file "'TODO'"
else
sed 's/^X//' << \SHAR_EOF > 'TODO'
XThings to be done to vuser:
X
X Fix to work properly with csh. It currently only works
X with bash, sh, and ksh. I do not use csh so this has
X been a low priority.
X
X Improve the signal handling. It is currently very poor.
X
X Write reasonable documentation including a man page and a
X texinfo file.
X
X Clean up the code that handles the escape characters.
SHAR_EOF
if test 353 -ne "`wc -c < 'TODO'`"
then
echo shar: error transmitting "'TODO'" '(should have been 353 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'havefun.c'" '(7960 characters)'
if test -f 'havefun.c'
then
echo shar: will not over-write existing file "'havefun.c'"
else
sed 's/^X//' << \SHAR_EOF > 'havefun.c'
X/* havefun.c - This module contains the code to do the main i/o handling.
X
X Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X
X This file is part of vuser.
X
X vuser is free software; you can redistribute it and/or modify it
X under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your
X option) any later version.
X
X vuser is distributed in the hope that it will be useful, but
X WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with GNU CC; see the file COPYING. If not, write to the
X Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X*/
X
X#if !defined(lint)
Xstatic char SCCSid[] = "$Id: havefun.c,v 1.1 89/12/15 21:28:52 jeffl Exp $";
X#endif
X
X#include <stdio.h>
X#include <ctype.h>
X#include <signal.h>
X
X#if defined(__STDC__)
Xextern void KillSlave();
Xextern int DeadSlave();
Xvoid Send2MasterPty(char *, int);
Xvoid Send2stdout(char *, int);
X#else
Xextern void KillSlave();
Xextern int DeadSlave();
Xvoid Send2MasterPty();
Xvoid Send2stdout();
X#endif
X
Xextern FILE *ScriptFile;
Xextern FILE *RecordFile;
Xextern int MasterPty;
Xextern int Interactive;
X
Xchar PromptBuf[4096];
Xchar InComingPrompt[8192];
Xchar PromptLookedFor[4096];
Xint PromptSize = 10;
Xint PromptCount = 0;
Xint ICPCount = 0;
Xint ICPLength = 0;
Xchar *CurrPromptPos = PromptBuf - 1;
Xchar EscapeChar = '@';
X#if defined(TIMEOUT_IS_LONG)
Xlong TimeOut = 30;
X#else
X#include <sys/time.h>
Xstruct timeval TimeOut = {30, 0};
X#endif
X
Xvoid Send2ScriptFile(curr, start, stop, size)
Xchar *curr, *start, *stop;
Xint size;
X{
X if(curr > stop)
X curr = start + 1;
X while(size--) {
X if(isprint(*curr) && *curr != '\\')
X putc(*curr, ScriptFile);
X else
X switch(*curr) {
X case '\n': fputs("\\n", ScriptFile); break;
X case '\r': fputs("\\r", ScriptFile); break;
X case '\t': fputs("\\t", ScriptFile); break;
X case '\f': fputs("\\f", ScriptFile); break;
X case '\\': fputs("\\\\", ScriptFile); break;
X default: fprintf(ScriptFile, "\\0%03o", *curr); break;
X }
X if(++curr > stop)
X curr = start;
X }
X putc('\n', ScriptFile);
X return;
X}
X
Xint GetOneChar()
X{
X char chr = 0;
X
X if(Interactive) {
X write(1, "@", 1);
X read(0, &chr, 1);
X if(chr != EscapeChar)
X write(1, &chr, 1);
X return((int)chr);
X }
X return(getchar());
X}
X
Xint DoEscape(inBuf, cnt)
Xchar *inBuf;
Xint cnt;
X{
X int gotChar = -1;
X char buf[4096];
X
X if(!cnt)
X gotChar = GetOneChar();
X else {
X gotChar = *inBuf++;
X --cnt;
X }
X if(gotChar == EscapeChar) {
X if(ScriptFile) {
X fseek(ScriptFile, -1, 1);
X putc(EscapeChar, ScriptFile);
X putc('\n', ScriptFile);
X }
X if(!Interactive)
X write(1, &gotChar, 1);
X return(0);
X }
X if(Interactive)
X Tty2ShellMode();
X if(gotChar == '!') {
X if(cnt)
X strcpy(buf, inBuf);
X else
X gets(buf);
X if(ScriptFile) {
X fseek(ScriptFile, -1, 1);
X putc('!', ScriptFile);
X fputs(buf, ScriptFile);
X }
X if(!Interactive) {
X write(1, "@!", 2);
X write(1, buf, strlen(buf));
X write(1, "\n", 1);
X }
X signal(SIGCLD, SIG_DFL);
X system(buf);
X signal(SIGCLD, DeadSlave);
X } else if(gotChar == 't' || gotChar == 'T') {
X gets(buf);
X if(ScriptFile) {
X fseek(ScriptFile, -1, 1);
X putc('t', ScriptFile);
X fputs(buf, ScriptFile);
X }
X if(!Interactive) {
X write(1, "@t", 2);
X write(1, buf, strlen(buf));
X write(1, "\n", 1);
X }
X#if defined(TIMEOUT_IS_LONG)
X TimeOut = atol(buf);
X#else
X TimeOut.tv_sec = atol(buf);
X#endif
X } else if(gotChar == 'q' || gotChar == 'Q') {
X gets(buf);
X if(ScriptFile) {
X fseek(ScriptFile, -1, 1);
X putc('q', ScriptFile);
X fputs(buf, ScriptFile);
X }
X if(!Interactive) {
X write(1, "@q", 2);
X write(1, buf, strlen(buf));
X write(1, "\n", 1);
X }
X PromptSize = atoi(buf);
X }
X Tty2ProgramMode();
X return(1);
X}
X
Xvoid SendResponse();
X
Xvoid GetNextPrompt()
X{
X int chr = EOF;
X
X ICPLength = 0;
X while((chr = getchar()) != EOF) {
X switch(chr) {
X case '\n': {
X if(!ICPLength)
X SendResponse();
X return;
X }
X case '\\': {
X switch(chr = getchar()) {
X case '0': {
X chr = ((getchar() - '0') * 64);
X chr += ((getchar() - '0') * 8);
X chr += (getchar() - '0');
X break;
X }
X case 'n': chr = '\n'; break;
X case 'r': chr = '\r'; break;
X case 't': chr = '\t'; break;
X case 'f': chr = '\f'; break;
X case '\\': break;
X }
X break;
X }
X }
X PromptLookedFor[ICPLength++] = chr;
X }
X return;
X}
X
Xvoid SendResponse()
X{
X int chr = EOF;
X int sendBufCount = 0;
X char sendBuf[4096];
X
X while((chr = getchar()) != EOF) {
X switch(chr) {
X case '\n': {
X Send2MasterPty(sendBuf, sendBufCount);
X GetNextPrompt();
X return;
X }
X case '\\': {
X switch(chr = getchar()) {
X case '0': {
X chr = ((getchar() - '0') * 64);
X chr += ((getchar() - '0') * 8);
X chr += (getchar() - '0');
X break;
X }
X case 'n': chr = '\n'; break;
X case 'r': chr = '\r'; break;
X case 't': chr = '\t'; break;
X case 'f': chr = '\f'; break;
X case '\\': break;
X }
X break;
X }
X }
X if(chr == EscapeChar)
X if(DoEscape(NULL, 0))
X continue;
X sendBuf[sendBufCount++] = chr;
X }
X return;
X}
X
Xint PromptCompare(ptr1, ptr2, cnt)
Xchar *ptr1, *ptr2;
Xint cnt;
X{
X while(cnt-- && *ptr1++ == *ptr2++);
X if(!cnt)
X return(0);
X return(*--ptr1 - *--ptr2);
X}
X
Xvoid DoPromptStuff(buf, cnt)
Xchar *buf;
Xint cnt;
X{
X while(cnt--) {
X InComingPrompt[ICPCount++] = *buf++;
X if(ICPCount >= ICPLength) {
X if(ICPCount > 8192) {
X memcpy(InComingPrompt, InComingPrompt + ICPCount - ICPLength,
X ICPLength);
X ICPCount = ICPLength;
X }
X if(!PromptCompare(InComingPrompt + ICPCount - ICPLength,
X PromptLookedFor, ICPLength)) {
X SendResponse();
X ICPCount = 0;
X continue;
X }
X }
X }
X return;
X}
X
Xvoid Send2stdout(buf, cnt)
Xchar *buf;
Xint cnt;
X{
X int savedCnt = 0;
X
X if(ScriptFile)
X for(; savedCnt < cnt; ++savedCnt) {
X if(++CurrPromptPos > PromptBuf + PromptSize)
X CurrPromptPos = PromptBuf;
X *CurrPromptPos = *(buf + savedCnt);
X if(PromptCount++ >= PromptSize)
X PromptCount = PromptSize;
X }
X write(1, buf, cnt);
X if(!Interactive)
X DoPromptStuff(buf, cnt);
X if(RecordFile)
X fwrite(buf, 1, cnt, RecordFile);
X return;
X}
X
Xvoid Send2MasterPty(buf, cnt)
Xchar *buf;
Xint cnt;
X{
X static int lastCharSent = -1;
X
X if(ScriptFile) {
X if(cnt == 1 && *buf != EscapeChar && PromptCount > 0
X && PromptBuf[PromptCount - 1] == lastCharSent) {
X fseek(ScriptFile, -1, 1);
X Send2ScriptFile(buf, buf, buf + 1, 1);
X } else {
X Send2ScriptFile(PromptCount >= PromptSize ?
X CurrPromptPos+1:PromptBuf,
X PromptBuf, PromptBuf + PromptSize, PromptCount);
X CurrPromptPos = PromptBuf - 1;
X PromptCount = 0;
X Send2ScriptFile(buf, buf, buf + cnt, cnt);
X }
X lastCharSent = buf[cnt - 1];
X }
X if(Interactive) {
X int pos = 0;
X for(; pos < cnt; ++pos)
X if(buf[pos] == EscapeChar) {
X write(MasterPty, buf, pos);
X if(DoEscape(buf + pos + 1, cnt - pos - 1))
X return;
X }
X }
X write(MasterPty, buf, cnt);
X return;
X}
X
Xvoid HaveFun()
X{
X int readMask = 0, cnt = -1;
X char buf[4096];
X
X if(!Interactive)
X GetNextPrompt();
X while(1) {
X readMask = (1 << MasterPty) | Interactive;
X if(select(32, &readMask, (int *)NULL, (int *)NULL, &TimeOut) < 0) {
X perror("on select: ");
X KillSlave();
X }
X if(readMask & (1 << MasterPty)) {
X if((cnt = read(MasterPty, buf, sizeof(buf))) < 0) {
X perror("read of master pty: ");
X KillSlave();
X }
X Send2stdout(buf, cnt);
X } else if(readMask & 1) {
X if((cnt = read(0, buf, sizeof(buf))) < 0) {
X perror("read of stdin: ");
X KillSlave();
X }
X Send2MasterPty(buf, cnt);
X } else if(!Interactive)
X SendResponse();
X }
X}
SHAR_EOF
if test 7960 -ne "`wc -c < 'havefun.c'`"
then
echo shar: error transmitting "'havefun.c'" '(should have been 7960 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'main.c'" '(2512 characters)'
if test -f 'main.c'
then
echo shar: will not over-write existing file "'main.c'"
else
sed 's/^X//' << \SHAR_EOF > 'main.c'
X/* main.c - This module contains the startup code for the vuser program.
X
X Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X
X This file is part of vuser.
X
X vuser is free software; you can redistribute it and/or modify it
X under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your
X option) any later version.
X
X vuser is distributed in the hope that it will be useful, but
X WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with GNU CC; see the file COPYING. If not, write to the
X Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X*/
X
X#if !defined(lint)
Xstatic char SCCSid[] = "$Id: main.c,v 1.1 89/12/15 21:30:53 jeffl Exp $";
X#endif
X
X#include <stdio.h>
X#include <signal.h>
X
X#if defined(__STDC__)
Xextern void Tty2ProgramMode();
Xextern void GetPty();
Xextern void StartSlave();
Xextern void HaveFun();
X#else
Xextern void Tty2ProgramMode();
Xextern void GetPty();
Xextern void StartSlave();
Xextern void HaveFun();
X#endif
X
Xextern char *optarg;
Xextern int optind;
X
Xextern int PromptSize;
Xextern char **Program2Run;
Xextern char *RloginProgram[];
X
X#if defined(TIMEOUT_IS_LONG)
Xextern long TimeOut;
X#else
X#include <sys/time.h>
Xextern struct timeval TimeOut;
X#endif
X
XFILE *ScriptFile = (FILE *)NULL;
XFILE *RecordFile = (FILE *)NULL;
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X loop: switch(getopt(argc, argv, "s:p:t:e:l:r:")) {
X case EOF: break;
X case 's': {
X if(!(ScriptFile = fopen(optarg, "w"))) {
X perror(optarg);
X exit(1);
X }
X goto loop;
X }
X case 'p': {
X if((PromptSize = atoi(optarg)) > 4096) {
X fprintf(stderr, "Prompt size is limited to 4096.\n");
X PromptSize = 4096;
X }
X goto loop;
X }
X#if defined(TIMEOUT_IS_LONG)
X case 't': TimeOut = atol(optarg); goto loop;
X#else
X case 't': TimeOut.tv_sec = atol(optarg); goto loop;
X#endif
X case 'e': Program2Run = &argv[optind - 1]; break;
X case 'l': {
X RloginProgram[2] = argv[optind];
X RloginProgram[4] = argv[optind - 1];
X break;
X }
X case 'r': {
X if(!(RecordFile = fopen(optarg, "w"))) {
X perror(optarg);
X exit(1);
X }
X goto loop;
X }
X default: exit(1);
X }
X setbuf(stdin, (char *)NULL);
X signal(SIGINT, SIG_IGN);
X Tty2ProgramMode();
X GetPty();
X StartSlave();
X HaveFun();
X}
SHAR_EOF
if test 2512 -ne "`wc -c < 'main.c'`"
then
echo shar: error transmitting "'main.c'" '(should have been 2512 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'pty.c'" '(2284 characters)'
if test -f 'pty.c'
then
echo shar: will not over-write existing file "'pty.c'"
else
sed 's/^X//' << \SHAR_EOF > 'pty.c'
X/* pty.c - This module contains the code to handle the pty stuff.
X
X Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X
X This file is part of vuser.
X
X vuser is free software; you can redistribute it and/or modify it
X under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your
X option) any later version.
X
X vuser is distributed in the hope that it will be useful, but
X WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with GNU CC; see the file COPYING. If not, write to the
X Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X*/
X
X#if !defined(lint)
Xstatic char SCCSid[] = "$Id: pty.c,v 1.1 89/12/15 21:31:03 jeffl Exp $";
X#endif
X
X#include <stdio.h>
X#include <fcntl.h>
X
X#if defined(__STDC__)
Xextern void Tty2ShellMode();
X#else
Xextern void Tty2ShellMode();
X#endif
X
X#if defined(SYSV)
X#include <termio.h>
Xstruct termio ShellTtyMode;
X#else
X#include <sgtty.h>
Xstruct sgttyb ShellTtyMode;
X#endif
X
Xint MasterPty = -1, SlavePty = -1;
X
Xvoid Pty2ShellMode()
X{
X#if defined(SYSV)
X ioctl(SlavePty, TCSETA, &ShellTtyMode);
X#else
X ioctl(SlavePty, TIOCSETP, &ShellTtyMode);
X#endif
X return;
X}
X
Xvoid GetPty()
X{
X int line = 'p', node = 0;
X char tmp[32];
X
X strcpy(tmp, "/dev/ptyxx");
X for(; line <= 'q'; ++line)
X for(node = 0; node < 16; ++node) {
X tmp[8] = (char)line;
X tmp[9] = (char)((node > 9 ? (node + 'a' - 10) : (node + '0')));
X if((MasterPty = open(tmp, O_RDWR|O_NDELAY)) >= 0) {
X tmp[5] = 't';
X if((SlavePty = open(tmp, O_RDWR)) < 0) {
X perror("on pty: ");
X Tty2ShellMode();
X exit(1);
X }
X Pty2ShellMode();
X return;
X }
X }
X fprintf(stderr, "No ptys available, try later.\n");
X Tty2ShellMode();
X exit(1);
X}
X
Xvoid SlavePty2Stdio()
X{
X int cnt = 3;
X#if !defined(_NFILE)
X int maxFiles = getdtablesize();
X#else
X int maxFiles = _NFILE;
X#endif
X
X close(0);
X dup(SlavePty);
X close(1);
X dup(SlavePty);
X close(2);
X dup(SlavePty);
X for(; cnt < maxFiles; ++cnt)
X close(cnt);
X return;
X}
SHAR_EOF
if test 2284 -ne "`wc -c < 'pty.c'`"
then
echo shar: error transmitting "'pty.c'" '(should have been 2284 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'slave.c'" '(2607 characters)'
if test -f 'slave.c'
then
echo shar: will not over-write existing file "'slave.c'"
else
sed 's/^X//' << \SHAR_EOF > 'slave.c'
X/* slave.c - This module contains the code to handle processing the slave
X process.
X
X Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X
X This file is part of vuser.
X
X vuser is free software; you can redistribute it and/or modify it
X under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your
X option) any later version.
X
X vuser is distributed in the hope that it will be useful, but
X WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with GNU CC; see the file COPYING. If not, write to the
X Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X*/
X
X#if !defined(lint)
Xstatic char SCCSid[] = "$Id: slave.c,v 1.1 89/12/15 21:31:13 jeffl Exp $";
X#endif
X
X#include <stdio.h>
X#include <signal.h>
X#include <sys/wait.h>
X
X#if defined(__STDC__)
Xextern void Tty2ShellMode();
Xextern void SlavePty2Stdio();
Xextern char *getenv(char *);
X#else
Xextern void Tty2ShellMode();
Xextern void SlavePty2Stdio();
Xextern char *getenv();
X#endif
X
Xint SlavePid = 0;
Xchar **Program2Run = (char **)NULL;
Xchar *RloginProgram[] = {
X "rlogin",
X "rlogin",
X NULL,
X "-l",
X NULL,
X NULL,
X};
X
Xvoid RunSlaveProgram()
X{
X char *ptr = (char *)NULL;
X char tmp[1024];
X
X if(RloginProgram[2]) {
X execlp(RloginProgram[0], RloginProgram[1], RloginProgram[2],
X RloginProgram[3], RloginProgram[4], RloginProgram[5]);
X perror("rlogin: ");
X Tty2ShellMode();
X exit(1);
X }
X if(Program2Run) {
X execvp(Program2Run[0], Program2Run);
X perror(Program2Run[0]);
X Tty2ShellMode();
X exit(1);
X }
X if(!(ptr = getenv("SHELL")))
X strcpy(tmp, "/bin/sh");
X else
X strcpy(tmp, ptr);
X execlp(tmp, tmp, (char *)0);
X perror("starting slave: ");
X Tty2ShellMode();
X exit(1);
X}
X
Xvoid KillSlave()
X{
X kill(SlavePid, SIGTERM);
X sleep(15);
X kill(SlavePid, SIGKILL);
X sleep(2);
X Tty2ShellMode();
X exit(1);
X}
X
XDeadSlave()
X{
X union wait status;
X
X if(wait(&status) != SlavePid) {
X signal(SIGCLD, DeadSlave);
X fprintf(stderr, "Someone else's child just killed me!!!\n");
X fprintf(stderr, "Shutting down.\n");
X KillSlave();
X }
X Tty2ShellMode();
X exit(0);
X}
X
Xvoid StartSlave()
X{
X signal(SIGCLD, DeadSlave);
X if((SlavePid = fork()) < 0) {
X perror("on fork: ");
X Tty2ShellMode();
X exit(1);
X }
X if(!SlavePid) {
X SlavePty2Stdio();
X RunSlaveProgram();
X }
X return;
X}
SHAR_EOF
if test 2607 -ne "`wc -c < 'slave.c'`"
then
echo shar: error transmitting "'slave.c'" '(should have been 2607 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'tty.c'" '(2415 characters)'
if test -f 'tty.c'
then
echo shar: will not over-write existing file "'tty.c'"
else
sed 's/^X//' << \SHAR_EOF > 'tty.c'
X/* tty.c - This module contains the code to manipulate the tty.
X
X Copyright 1989 by Jeffrey F. Lawhorn (jeffl at berick.uucp)
X
X This file is part of vuser.
X
X vuser is free software; you can redistribute it and/or modify it
X under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 1, or (at your
X option) any later version.
X
X vuser is distributed in the hope that it will be useful, but
X WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
X General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with GNU CC; see the file COPYING. If not, write to the
X Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X*/
X
X#if !defined(lint)
Xstatic char SCCSid[] = "$Id: tty.c,v 1.1 89/12/15 21:31:24 jeffl Exp $";
X#endif
X
X#include <errno.h>
X#include <fcntl.h>
X
X#if defined(SYSV)
X#include <termio.h>
Xstruct termio ShellTtyMode, ProgramTtyMode;
X#else
X#include <sgtty.h>
Xstruct sgttyb ShellTtyMode, ProgramTtyMode;
X#endif
X
Xint Interactive = 1;
X
Xvoid Tty2ProgramMode()
X{
X static int savedShellMode = 0;
X int retVal = 0, ttyFile = -1;
X
X if(!savedShellMode) {
X if(!(ttyFile = open("/dev/tty", O_RDWR))) {
X perror("opening /dev/tty: ");
X exit(1);
X }
X#if defined(SYSV)
X retVal = ioctl(0, TCGETA, &ShellTtyMode);
X#else
X retVal = ioctl(0, TIOCGETP, &ShellTtyMode);
X#endif
X if(retVal < 0 && errno == ENOTTY)
X Interactive = 0;
X else if(retVal < 0){
X perror("getting tty modes: ");
X exit(1);
X }
X#if defined(SYSV)
X retVal = ioctl(ttyFile, TCGETA, &ShellTtyMode);
X#else
X retVal = ioctl(ttyFile, TIOCGETP, &ShellTtyMode);
X#endif
X close(ttyFile);
X savedShellMode = 1;
X }
X#if defined(SYSV)
X ioctl(0, TCGETA, &ProgramTtyMode);
X ProgramTtyMode.c_oflag = 0;
X ProgramTtyMode.c_iflag = 0;
X ProgramTtyMode.c_lflag &= ~(ICANON|ECHO);
X ProgramTtyMode.c_cc[4] = 1;
X ProgramTtyMode.c_cc[5] = 0;
X ioctl(0, TCSETA, &ProgramTtyMode);
X#else
X ioctl(0, TIOCGETP, &ProgramTtyMode);
X ProgramTtyMode.sg_flags |= RAW;
X ProgramTtyMode.sg_flags &= ~(ECHO);
X ioctl(0, TIOCSETP, &ProgramTtyMode);
X#endif
X return;
X}
X
Xvoid Tty2ShellMode()
X{
X#if defined(SYSV)
X ioctl(0, TCSETA, &ShellTtyMode);
X#else
X ioctl(0, TIOCSETP, &ShellTtyMode);
X#endif
X return;
X}
SHAR_EOF
if test 2415 -ne "`wc -c < 'tty.c'`"
then
echo shar: error transmitting "'tty.c'" '(should have been 2415 characters)'
fi
fi # end of overwriting check
# End of shell archive
exit 0
--
Jeff Lawhorn I know I had a pithy quote sitting
jeffl at berick.uucp around here somewhere...
ucsd!sdsu!berick!jeffl
--
Jeff Lawhorn I know I had a pithy quote sitting
jeffl at berick.uucp around here somewhere...
ucsd!sdsu!berick!jeffl
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