#!/bin/bash
workdir=/tmp/qemu-kvm
bin=/usr/local/opt/qemu-kvm/bin
lib=/usr/local/opt/qemu-kvm/lib
rootfs="/dev/root"

mkdir -p $bin && mkdir $lib

# The ar utility is needed to decompress .deb files.
curl -LJ https://github.com/psammarco/KVM-on-ChromeOS/blob/master/ar?raw=true -o $bin/ar
curl -LJ https://github.com/psammarco/KVM-on-ChromeOS/blob/master/libbfd-2.28-system.so?raw=true -o $lib/libbfd-2.28-system.so

chmod u+x $bin/ar

### ChromeOS's Specific!!!
# The following assumes rootfs_verification for / has already been removed
if grep $rootfs /proc/mounts | grep ro; then
  mount -o remount,rw / &> mount.out

elif
 grep -iw 'read-write' mount.out; then

   echo '\nrootfs_verification for the root partition must to be removed in order to remount,rw  /
To remove rootfs_verification run the following command and than reboot the system:
"sudo /usr/share/vboot/bin/make_dev_ssd.sh  --remove_rootfs_verification --partitions 4"'

else exit 1

fi

echo -e 'LD_LIBRARY_PATH="/usr/local/opt/qemu-kvm/lib"\nPATH="/usr/local/opt/qemu-kvm/bin:$PATH"' > /etc/env.d/30kvm && source /etc/env.d/30kvm
### End ChromeOS's Specific

### qemu-kvm_2.8's binary download and installation tasks.
#
mkdir -p $workdir/qemu-kvm_2.8 && cd $workdir/qemu-kvm_2.8
curl -O  http://ftp.us.debian.org/debian/pool/main/q/qemu/qemu-kvm_2.8+dfsg-6+deb9u5_amd64.deb

ar x qemu-kvm_2.8+dfsg-6+deb9u5_amd64.deb | tar -xzvf control.tar.gz && tar -xvf data.tar.xz

# Validates the md5 hash of the binary, copies it to $bin and set exec permissions;
if md5sum -c md5sums; then
      cp usr/bin/kvm $bin/ && chmod u+x $bin/kvm
else
    exit 1
fi
#
### done

mkdir $workdir/qemu-system-x86 && cd ../qemu-system-x86

curl -O http://ftp.us.debian.org/debian/pool/main/q/qemu/qemu-system-x86_2.8+dfsg-6+deb9u5_amd64.deb

ar x qemu-system-x86_2.8+dfsg-6+deb9u5_amd64.deb | tar -xzvf control.tar.gz && tar -xvf data.tar.xz

if md5sum -c md5sums; then
      cp usr/bin/qemu-system* $bin/ && chmod u+x $bin/qemu-system*

else
    exit 1
fi

echo "To uninstall it, simply run rm -r /usr/local/opt/qemu-kvm as root"