+# }}}
+
+# helper functions {{{
+stage() {
+ if [ -n "$2" ] ; then
+ echo "$2" > "$STAGES/$1"
+ return 0
+ elif grep -q 'done' "$STAGES/$1" 2>/dev/null ; then
+ echo " [*] Notice: stage $1 has been executed already, skipping execution therefore.">&2
+ return 1
+ fi
+ echo " Executing stage ${1}"
+ return 0
+}
+
+askpass() {
+ # read -s emulation for dash. result is in $resp.
+ set -o noglob
+ [ -t 0 ] && stty -echo
+ read resp
+ [ -t 0 ] && stty echo
+ set +o noglob
+}
+# }}}
+
+# define chroot mirror {{{
+chrootmirror() {
+ if [ -n "$KEEP_SRC_LIST" ] ; then
+ echo "KEEP_SRC_LIST has been set, skipping chrootmirror stage."
+ return
+ fi
+
+ if [ -z "$COMPONENTS" ] ; then
+ COMPONENTS='main'
+ fi
+ echo "Using repository components $COMPONENTS"
+
+ if [ -n "$ISO" ] ; then
+ echo "Adjusting sources.list for ISO (${ISO})."
+ echo "deb $ISO $RELEASE $COMPONENTS" > /etc/apt/sources.list
+
+ if [ -n "$MIRROR" ] ; then
+ echo "Adding mirror entry (${MIRROR}) to sources.list."
+ echo "deb $MIRROR $RELEASE $COMPONENTS" >> /etc/apt/sources.list
+ fi
+ else
+ if [ -n "$MIRROR" ] ; then
+ echo "Adjusting sources.list for mirror (${MIRROR})."
+ echo "deb $MIRROR $RELEASE $COMPONENTS" > /etc/apt/sources.list
+ fi
+ fi
+
+ # LTS support
+ case "$RELEASE" in
+ squeeze)
+ if [ -n "$MIRROR" ] ; then
+ echo "Release matching $RELEASE - enabling LTS support in sources.list"
+ echo "deb $MIRROR ${RELEASE}-lts $COMPONENTS" >> /etc/apt/sources.list
+ fi
+ ;;
+ esac
+
+ # add security.debian.org:
+ case "$RELEASE" in
+ unstable|sid|lenny) ;; # no security pool available
+ *)
+ echo "Adding security.debian.org to sources.list."
+ echo "deb http://security.debian.org ${RELEASE}/updates $COMPONENTS" >> /etc/apt/sources.list
+ ;;
+ esac
+}
+# }}}
+
+# remove local chroot mirror {{{
+remove_chrootmirror() {
+ if [ -n "$KEEP_SRC_LIST" ] ; then
+ echo "KEEP_SRC_LIST has been set, skipping remove_chrootmirror stage."
+ return
+ fi
+
+ if [ -n "$ISO" ] ; then
+ echo "Removing ISO (${ISO}) from sources.list."
+ TMP_ISO=$(echo "$ISO" |sed 's#/#\\/#g')
+ sed -i "/deb $TMP_ISO $RELEASE $COMPONENTS/ D" /etc/apt/sources.list
+ else
+ if [ -n "$MIRROR" ] && echo "$MIRROR" | grep -q 'file:' ; then
+ echo "Removing local mirror (${MIRROR}) from sources.list."
+ TMP_MIRROR=$(echo "$MIRROR" |sed 's#/#\\/#g')
+ sed -i "/deb $TMP_MIRROR $RELEASE $COMPONENTS/ D" /etc/apt/sources.list
+ echo "Adding fallback mirror entry (${FALLBACK_MIRROR}) to sources.list instead."
+ echo "deb $FALLBACK_MIRROR $RELEASE $COMPONENTS" >> /etc/apt/sources.list
+ fi
+ fi
+}
+# }}}
+
+# set up grml repository {{{
+grmlrepos() {
+ if [ -n "$GRMLREPOS" ] ; then
+ # user might have provided their own apt sources.list
+ if ! grep -q grml /etc/apt/sources.list.d/grml.list 2>/dev/null ; then
+ cat >> /etc/apt/sources.list.d/grml.list << EOF
+# grml: stable repository:
+ deb http://deb.grml.org/ grml-stable main
+ deb-src http://deb.grml.org/ grml-stable main
+
+# grml: testing/development repository:
+ deb http://deb.grml.org/ grml-testing main
+ deb-src http://deb.grml.org/ grml-testing main
+EOF
+ fi
+
+ if apt-get update $DPKG_OPTIONS; then
+ apt-get -y --allow-unauthenticated install grml-debian-keyring $DPKG_OPTIONS
+ apt-get update $DPKG_OPTIONS
+ else
+ # make sure we have the keys available for aptitude
+ gpg --keyserver subkeys.pgp.net --recv-keys 709BCE51568573EBC160E590F61E2E7CECDEA787
+ gpg --export 709BCE51568573EBC160E590F61E2E7CECDEA787 | apt-key add - || true # not yet sure
+ # why it's necessary, sometimes we get an error even though it works [mika]
+ fi
+
+ # make sure we install packages from Grml's pool only if not available
+ # from Debian!
+ if ! grep -q grml /etc/apt/preferences 2>/dev/null ; then
+ cat >> /etc/apt/preferences << EOF
+// debian pool (default):
+Package: *
+Pin: release o=Debian
+Pin-Priority: 996
+
+// main grml-repository:
+Package: *
+Pin: origin deb.grml.org
+Pin-Priority: 991
+EOF
+ fi
+ fi
+}
+# }}}