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Viewing changes to parrot/src/parrot_identity_box

  • Committer: Bazaar Package Importer
  • Author(s): Michael Hanke
  • Date: 2011-05-07 09:05:00 UTC
  • Revision ID: james.westby@ubuntu.com-20110507090500-lqpmdtwndor6e7os
Tags: upstream-3.3.2
Import upstream version 3.3.2

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parrot/src/parrot_identity_box
 
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#!/bin/sh
 
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vid="$1"
 
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shift
 
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command="$@"
 
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parrot=`which parrot_run`
 
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if [ "X$vid" = X ]
 
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then
 
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        echo "Use: $0 <identity> [command]";
 
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        exit 1
 
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fi
 
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# Clean up the VID so that it can be used in the passwd file.
 
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cleanvid=`echo -n "$vid" | tr : _`
 
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# Get the current user's real uid and gid
 
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uid=`id -u`
 
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gid=`id -g`
 
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# Create a private home directory for this process.
 
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mkdir -p /tmp/home.${uid}/$cleanvid
 
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HOME=/tmp/home.${uid}/$cleanvid
 
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# Create a private passwd file listing only this user.
 
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cat > $HOME/.passwd << EOF
 
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$cleanvid:x:$uid:$gid:Unknown:$HOME:$SHELL
 
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EOF
 
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cat /etc/passwd >> $HOME/.passwd
 
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cat > $HOME/.group <<EOF
 
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none:x:$gid:$cleanvid
 
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EOF
 
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cat /etc/group >> $HOME/.group
 
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# Create a private ACL so that this user can read and write here.
 
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cat > $HOME/.__acl << EOF
 
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$vid rwlax
 
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EOF
 
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# If no command was given, run the user's shell in the home dir
 
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if [ "X$command" = X ]
 
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then
 
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        command=$SHELL
 
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        cd $HOME
 
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fi
 
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# Finally, fork off parrot with a private environment and password file.
 
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exec /usr/bin/env -i HOME=${HOME} SHELL=${SHELL} LANG=${LANG} TERM=${TERM} ${parrot} -H -M/etc/passwd=${HOME}/.passwd -M/etc/group=${HOME}/.group -u $vid -- $command