From d3e2c189aeacd82a381239823ea88e5dcc65ae0a Mon Sep 17 00:00:00 2001
From: Andreas Grapentin <andreas@grapentin.org>
Date: Fri, 29 Dec 2017 13:33:41 +0100
Subject: [PATCH] creating parabola packaging environment now

---
 .gitignore    |   3 ++
 create.sh     |   7 ++-
 src/stage2.sh |   4 ++
 src/stage3.sh | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++
 start.sh      |   3 +-
 5 files changed, 129 insertions(+), 4 deletions(-)
 create mode 100755 src/stage3.sh

diff --git a/.gitignore b/.gitignore
index 13cd0d6..ebf5081 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,5 +10,8 @@
 # build dirs
 build/
 
+# fragments of running VM
+.boot/
+
 # generated ssh keys
 keys/*
diff --git a/create.sh b/create.sh
index d1f811b..dd2bf90 100755
--- a/create.sh
+++ b/create.sh
@@ -16,12 +16,15 @@ export _outfile=$_builddir/$(basename $OUTFILE)
 # prepare the empty image
 ./src/stage0.sh
 
-# install archlinuxarm in the empty image
+# install a clean archlinuxarm in the empty image
 ./src/stage1.sh
 
-# migrate the installed image to parabola
+# migrate the installed image to a clean parabola
 ./src/stage2.sh
 
+# setup package development environment
+./src/stage3.sh
+
 # cleanup
 chown $(logname) $_outfile
 mv -v $_outfile $OUTFILE
diff --git a/src/stage2.sh b/src/stage2.sh
index ddc01b4..21f89d5 100755
--- a/src/stage2.sh
+++ b/src/stage2.sh
@@ -58,6 +58,10 @@ mv /etc/pacman.conf{.pacnew,}
 pacman --noconfirm -Syuu
 
 pacman --noconfirm -S your-freedom
+
+userdel -r alarm
+useradd -mU parabola
+echo 'parabola:parabola' | chpasswd
 EOF
 chmod +x $_scriptfile
 
diff --git a/src/stage3.sh b/src/stage3.sh
new file mode 100755
index 0000000..e11a3d7
--- /dev/null
+++ b/src/stage3.sh
@@ -0,0 +1,116 @@
+#!/bin/bash
+
+set -eu
+
+_scriptfile=$_builddir/migrate.sh
+_pidfile=$_builddir/qemu.pid
+
+_loopdev=$(sudo losetup -f --show $_outfile)
+_bootdir=.boot
+
+# register cleanup handler to stop the started VM
+function cleanup {
+  test -f $_pidfile && (kill -9 $(cat $_pidfile) || true)
+  rm -f $_pidfile
+  umount ${_loopdev}p1
+  losetup -d $_loopdev
+  rm -rf $_bootdir
+  rm -f $_scriptfile
+}
+trap cleanup ERR
+
+# create the package build preparation script, adapted from
+# https://wiki.parabola.nu/Package_maintainer_guide
+(source /etc/makepkg.conf && cat > $_scriptfile << EOF
+#!/bin/bash
+
+set -eu
+
+# setup parabola login keys
+cat /root/.ssh/authorized_keys >> /home/parabola/.ssh/authorized_keys
+
+# fix key permissions and ownership
+chown -R parabola:parabola /home/parabola/{.gnupg,.ssh,.gitconfig}
+chmod 600 /home/parabola/.ssh/authorized_keys
+
+# install needed packages
+pacman --noconfirm -S libretools vim sudo rxvt-unicode-terminfo
+
+# update configuration
+sed -i \
+    -e 's_^#PKGDEST.*_PKGDEST="/home/parabola/output/packages_' \
+    -e 's_^#SRCDEST.*_SRCDEST="/home/parabola/output/sources_' \
+    -e 's_^#SRCPKGDEST.*_SRCPKGDEST="/home/parabola/output/srcpackages_' \
+    -e 's_^#LOGDEST.*_LOGDEST="/home/parabola/output/makepkglogs_' \
+    -e 's_^#PACKAGER.*_PACKAGER="$PACKAGER"_' \
+    -e 's_^#GPGKEY.*_GPGKEY="$GPGKEY"_' \
+  /etc/makepkg.conf
+
+sed -i \
+    -e 's_^CHROOTDIR.*_CHROOTDIR="/home/parabola/build"_' \
+    -e 's_^CHROOTEXTRAPKG.*_CHROOTEXTRAPKG=(vim)_' \
+  /etc/libretools.d/chroot.conf
+
+# create directories
+mkdir -p /home/parabola/output/{packages,sources,srcpackages,makepkglogs}
+chown -R parabola:parabola /home/parabola/output
+
+# disable systemd-stdin hack...
+sed -i '/XXX: SYSTEMD-STDIN HACK/,+9d' /usr/bin/librechroot
+
+# setup work directories
+su - parabola -c createworkdir
+librechroot make
+
+# setup sudo
+cat > /etc/sudoers.d/parabola << IEOF
+# grant full permissions to user parabola
+parabola ALL=(ALL) NOPASSWD: ALL
+IEOF
+EOF
+)
+chmod +x $_scriptfile
+
+# start the VM
+mkdir -p $_bootdir
+mount ${_loopdev}p1 $_bootdir
+QEMU_AUDIO_DRV=none qemu-system-arm \
+  -M vexpress-a9 \
+  -m 1G \
+  -dtb $_bootdir/dtbs/vexpress-v2p-ca9.dtb \
+  -kernel $_bootdir/zImage \
+  --append "root=/dev/mmcblk0p2 rw roottype=ext4 console=ttyAMA0" \
+  -drive if=sd,driver=raw,cache=writeback,file=$_outfile \
+  -display none \
+  -net user,hostfwd=tcp::2022-:22 \
+  -net nic \
+  -daemonize \
+  -pidfile $_pidfile
+
+# wait for ssh to be up
+while ! ssh -p 2022 -i keys/id_rsa root@localhost -o StrictHostKeyChecking=no true 2>/dev/null; do
+  echo -n . && sleep 5
+done && echo
+
+# copy the current users keys keys to the VM
+scp -rP 2022 -i keys/id_rsa $(sudo -iu $(logname) pwd)/.gnupg root@localhost:/home/parabola/
+scp -rP 2022 -i keys/id_rsa $(sudo -iu $(logname) pwd)/.ssh root@localhost:/home/parabola/
+scp -rP 2022 -i keys/id_rsa $(sudo -iu $(logname) pwd)/.gitconfig root@localhost:/home/parabola/
+
+# copy and execute the migration script
+scp -P 2022 -i keys/id_rsa $_scriptfile root@localhost:
+ssh -p 2022 -i keys/id_rsa root@localhost "./$(basename $_scriptfile)"
+
+# open a shell for debugging
+# ssh -p 2022 -i keys/id_rsa root@localhost
+
+# stop the VM
+ssh -p 2022 -i keys/id_rsa root@localhost "nohup shutdown -h now &>/dev/null & exit"
+while kill -0 $(cat $_pidfile) 2> /dev/null; do echo -n . && sleep 5; done && echo
+rm -f $_pidfile
+
+# cleanup
+umount ${_loopdev}p1
+losetup -d $_loopdev
+rm -rf $_bootdir
+rm $_scriptfile
diff --git a/start.sh b/start.sh
index 1d967e1..d7ebe73 100755
--- a/start.sh
+++ b/start.sh
@@ -2,7 +2,6 @@
 
 set -eu
 
-
 _builddir=build
 mkdir -p $_builddir
 
@@ -46,7 +45,7 @@ while ! ssh -p 2022 -i keys/id_rsa root@localhost $_sshopts true 2>/dev/null; do
 done && echo
 
 # open a session
-ssh -p 2022 -i keys/id_rsa root@localhost
+ssh -p 2022 -i keys/id_rsa parabola@localhost
 
 # shutdown the VM
 ssh -p 2022 -i keys/id_rsa root@localhost "nohup shutdown -h now &>/dev/null & exit"