firstboot: add text-based fallback in case of GUI failed

If firstboot fails it is very hard to debug the problem, because lack of any
user and no network access. So provide some basic fallback.

firstboot/firstboot-qubes-text

@@ -0,0 +1,98 @@
+#!/bin/bash
+
+# Failsafe minimal text-mode firstboot
+
+# Welcome
+
+echo "########################################################"
+echo "###                                                  ###"
+echo "### Welcome to `cat /etc/qubes-release`                  ###"
+echo "###                                                  ###"
+echo "########################################################"
+echo
+echo "This is failsafe text-mode firstboot. If you see this message, you have"
+echo "some problem with Xorg (most probably video driver)"
+echo
+echo "Anyway some basic setup is needed to continue:"
+
+# User creation
+
+echo
+echo "1. Setup user account"
+user=
+while [ -z "$user" ]; do
+    echo -n "Enter desired username: "
+    read user
+    if echo "$user" | grep -q "[^a-z0-9]"; then
+        echo "ERROR: Invalid characters in username, try again"
+    elif id $user > /dev/null 2>&1; then
+        echo "ERROR: This user already exists, try again"
+    else
+        break
+    fi
+done
+useradd -G qubes -m "$user" || exit 1
+while ! passwd "$user"; do true; done
+
+
+# Create default VMs
+
+echo
+echo "2. Create default VMs"
+echo
+echo "Choose one option:"
+echo "  1. Create default service VMs, and pre-defined AppVMs (work, banking, personal, untrusted)"
+echo "  2. Just create default service VMs"
+echo "  3. Do not create any VMs right now (not recommended, for advanced users only)"
+vms_option=
+while true; do
+    echo -n "Enter your choice (1/2/3): "
+    read vms_option
+    if [ "$vms_option" == "1" ]; then
+        vms_service=yes
+        vms_app=yes
+        break
+    elif [ "$vms_option" == "2" ]; then
+        vms_service=yes
+        break
+    elif [ "$vms_option" == "3" ]; then
+        break
+    else
+        echo "ERROR: Invalid choice, try again"
+    fi
+done
+
+set -e
+
+if [ "$vms_service" == "yes" ]; then
+    echo "-> Creating default netvm..."
+    su -c "/usr/bin/qvm-create --net --label red netvm" - $user
+    for dev in `/sbin/lspci -mm -n | sed -ne 's/^\([0-9][0-9]:[0-9][0-9].[0-9]\) "02.*/\1/p'`; do
+        su -c "/usr/bin/qvm-pci -a netvm $dev" - $user
+    done 
+    echo "-> Creating default firewallvm..."
+    su -c "/usr/bin/qvm-create --proxy --label green firewallvm" - $user
+    su -c "/usr/bin/qvm-prefs --set firewallvm netvm netvm" - $user
+    su -c "/usr/bin/qubes-prefs --set default-netvm firewallvm" - $user
+    echo "-> Configuring template..."
+    /bin/mkdir -p /mnt/template-root
+    for template in `ls /var/lib/qubes/vm-templates`; do
+        /bin/mount -oloop "/var/lib/qubes/vm-templates/$template/root.img" /mnt/template-root
+        cp /etc/localtime /mnt/template-root/etc
+        cp /etc/ntp.conf /mnt/template-root/etc
+        umount /mnt/template-root
+    done
+    echo "-> Starting network..."
+    /etc/init.d/qubes_netvm start
+    echo "-> Creating DispVM savefile (can take long time)..."
+    su -c "/usr/bin/qvm-create-default-dvm --default-template --default-script" - $user
+fi
+
+if [ "$vms_app" == "yes" ]; then
+    echo "-> Creating default AppVMs..."
+    su -c "/usr/bin/qvm-create work --label green" - $user
+    su -c "/usr/bin/qvm-create banking --label green" - $user
+    su -c "/usr/bin/qvm-create personal --label yellow" - $user
+    su -c "/usr/bin/qvm-create untrusted --label red" - $user
+fi
+echo "-> Done."

firstboot/firstboot.spec

@@ -42,6 +42,7 @@ rm -rf %{buildroot}
 make DESTDIR=%{buildroot} SITELIB=%{python_sitelib} install
 rm %{buildroot}/%{_datadir}/firstboot/modules/additional_cds.py*
 %find_lang %{name}
+install -m 0755 -D firstboot-qubes-text %{buildroot}%{_sbindir}/firstboot-qubes-text
 
 %clean
 rm -rf %{buildroot}
@@ -67,6 +68,7 @@ fi
 %config %{_initrddir}/firstboot
 %{python_sitelib}/*
 %{_sbindir}/firstboot
+%{_sbindir}/firstboot-qubes-text
 %{_datadir}/firstboot/modules/create_user.py*
 %{_datadir}/firstboot/modules/date.py*
 %{_datadir}/firstboot/modules/eula.py*

firstboot/init/firstboot

@@ -67,7 +67,7 @@ case "$1" in
 
         /usr/bin/plymouth --hide-splash
 
-        /usr/sbin/firstboot $args
+        /usr/sbin/firstboot $args || /usr/sbin/firstboot-qubes-text
         RETVAL=$?
 
         /usr/bin/plymouth --show-splash