setup_images.sh

## setup_images.sh
#!/bin/sh
# Andrew Fresh <andrew AT afresh1.com> - https://gist.github.com/afresh1

# This uses qemu, so pkg_add qemu

# Download and extract flashrd, either from github or here:
# http://www.nmedia.net/flashrd/

# Grab a flashrd image from here:
# http://www.nmedia.net/flashrd/images/
# and set the name:
flashimg=flashimg.amd64.pccons-20130318

# Set a path where you have space and permissions to copy the images
#test_path=`mktemp -d`
#test_path=/mnt/memory/qemu

[ -z "$test_path" ] && echo 'You must set test_path' && exit

flashrd_root=$PWD

# And create some directories with configs in $test_path/configs
# Such as
# echo 10.100.1.1/24 >configs/router01/etc/hostname.em0
# and configs/router02/etc/pf.conf, configs/router02/var/www/htdocs/index.html
#
# Newer versions of flashrd should support a flashrd.site to run post extraction
# scripts, so you could do more advanced configuration with that.
#
# Each directory will create a flashrd image with a hostname with that name

cd $test_path/configs
for d in */; do
    hostname=${d%/}
    hostdir=${PWD}/${hostname}
    onetime=${hostdir}.tgz
    img=${test_path}/${hostname}.img

    echo "$hostname [$onetime] [$img]"

    cd $hostdir && tar czvf $onetime ./

    cd $flashrd_root
    cp $flashimg $img
    sudo ./cfgflashrd -i $img -o $onetime -hostname $hostname
done

# start_rtr needs to be someplace we can find it,
# flashrd_root seems a good place
cd $flashrd_root
./start_images.sh $test_path

## start_images.sh
#!/bin/sh
# Andrew Fresh <andrew AT afresh1.com> - https://gist.github.com/afresh1

# This will start a qemu instance for each of the .img files in the directory
# passed on the command line (or cwd).  It also sets up a vether device and
# in the same bridge that the qemu em0 will be attached to.
#
# It only supports a single bridge with all routers in the same bridge.

test_path=${1:-.}
test_path=${test_path%/} # for the pgrep

export ETHER=vether0

ulimit -d 8388608

sudo ifconfig $ETHER 10.0.1.99/24 up
sudo ifconfig bridge0 add $ETHER
#sudo ifconfig vlan10 vlandev $ETHER 192.168.2.99/24

_mac=0
_pids=''
for img in ${test_path}/*.img; do
  _mac=$(($_mac + 1 ))
  pgrep -f qemu.*$img && continue # don't start if already running
  _macaddr=macaddr=52:54:00:12:34:5${_mac}
  qemu-system-x86_64 $img -m 512M -net nic,model=i82551,${_macaddr} -net tap &
  _pids="$_pids $!"
done

echo "Waiting for qemu to exit [$_pids]"
wait $_pids

# This is fairly destructive, but tries to cleanup after qemu
# probably overkill and doesn't work extremely well, but it
# generally doesn't break anything in my setup.
ifconfig | sed -ne 's/^\([a-z0-9]*\):.*/\1/p' |
  grep -e tun -e bridge -e vlan -e vether     |
  xargs -I % sudo ifconfig % destroy