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#! /bin/sh
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# automatically run by "lb config"
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set -x

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# we require building from git
if ! git rev-parse --is-inside-work-tree; then
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    echo "${PWD} is not a Git tree. Exiting."
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    exit 1
fi

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. config/amnesia
if [ -e config/amnesia.local ] ; then
   . config/amnesia.local
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fi

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export LB_BOOTSTRAP_INCLUDE='eatmydata'

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# sanity checks
if grep -qs -E '^Pin:\s+release\s+.*a=' config/chroot_apt/preferences ; then
    echo "Found unsupported n= syntax in config/chroot_apt/preferences,"
    echo "use n= instead. Exiting."
    exit 1
fi

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# init variables
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RUN_LB_CONFIG="lb config noauto"
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# init config/ with defaults for the target distribution
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$RUN_LB_CONFIG --distribution jessie ${@}
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# set up everything for time-based snapshots:
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apt-snapshots-serials prepare-build
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DEBIAN_MIRROR="$(apt-mirror debian)"
DEBIAN_SECURITY_MIRROR="$(apt-mirror debian-security)"
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TORPROJECT_MIRROR="$(apt-mirror torproject)"

perl -pi \
     -E \
       "s|^(deb(?:-src)?\s+)https?://ftp[.]us[.]debian[.]org/debian/?(\s+)|\$1$DEBIAN_MIRROR\$2| ; \
        s|^(deb(?:-src)?\s+)https?://deb[.]torproject[.]org/torproject[.]org/?(\s+)|\$1$TORPROJECT_MIRROR\$2|" \
    config/chroot_sources/*.chroot \
    || exit 1
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echo "config/chroot_sources/*.chroot:"
cat config/chroot_sources/*.chroot

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# set Amnesia's general options
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$RUN_LB_CONFIG \
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   --verbose \
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   --apt-recommends false \
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   --backports false \
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   --binary-images iso \
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   --binary-indices false \
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   --checksums none \
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   --bootappend-live "${AMNESIA_APPEND}" \
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   --bootstrap debootstrap \
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   --bootstrap-config tails-build-jessie \
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   --archive-areas "main contrib non-free" \
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   --includes none \
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   --iso-application="The Amnesic Incognito Live System" \
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   --iso-publisher="https://tails.boum.org/" \
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   --iso-volume="TAILS ${AMNESIA_FULL_VERSION}" \
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   --memtest none \
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   --mirror-binary              "$DEBIAN_MIRROR" \
   --mirror-bootstrap           "$DEBIAN_MIRROR" \
   --mirror-chroot              "$DEBIAN_MIRROR" \
   --mirror-binary-security     "$DEBIAN_SECURITY_MIRROR" \
   --mirror-chroot-security     "$DEBIAN_SECURITY_MIRROR" \
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   --packages-lists="standard" \
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   --tasks="standard" \
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   --linux-packages="linux-image-3.16.0-4" \
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   --syslinux-menu vesamenu \
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   --syslinux-splash data/splash.png \
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   --syslinux-timeout 4 \
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   --initramfs=live-boot \
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   ${@}

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# build i386 images on amd64 as well, include a bunch of kernels
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hw_arch="`dpkg --print-architecture`"
if [ "$hw_arch" = i386 -o "$hw_arch" = amd64 ]; then
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   $RUN_LB_CONFIG \
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      --architecture i386 \
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      --linux-flavours "586 amd64" \
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      ${@}
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# build powerpc images on powerpc64 as well, include only powerpc kernel
elif [ "$hw_arch" = powerpc -o "$hw_arch" = powerpc64 ]; then
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   $RUN_LB_CONFIG \
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      --architecture powerpc \
      --linux-flavours powerpc \
      ${@}
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fi

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install -d config/chroot_local-includes/etc/amnesia/

# environment
TAILS_WIKI_SUPPORTED_LANGUAGES="$(ikiwiki-supported-languages ikiwiki.setup)"
[ -n "$TAILS_WIKI_SUPPORTED_LANGUAGES" ] || exit 16
echo "TAILS_WIKI_SUPPORTED_LANGUAGES='${TAILS_WIKI_SUPPORTED_LANGUAGES}'" \
   >> config/chroot_local-includes/etc/amnesia/environment

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# version
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echo "${AMNESIA_FULL_VERSION}" > config/chroot_local-includes/etc/amnesia/version
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if git rev-list HEAD 2>&1 >/dev/null; then
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   git rev-list HEAD | head -n 1 >> config/chroot_local-includes/etc/amnesia/version
fi
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echo "live-build: `dpkg-query -W -f='${Version}\n' live-build`" \
   >> config/chroot_local-includes/etc/amnesia/version
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# os-release
cat >> config/chroot_local-includes/etc/os-release <<EOF
TAILS_PRODUCT_NAME="Tails"
TAILS_VERSION_ID="$AMNESIA_VERSION"
EOF
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# changelog
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cp debian/changelog config/chroot_local-includes/usr/share/doc/amnesia/Changelog
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# create readahead-list from squashfs.sort
if [ -e config/binary_rootfs/squashfs.sort ]; then
    mkdir -p config/chroot_local-includes/usr/share/amnesia
    sort -k2 -n -r config/binary_rootfs/squashfs.sort |
        cut -d' ' -f1 > config/chroot_local-includes/usr/share/amnesia/readahead-list
fi
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# custom APT sources
tails-custom-apt-sources > config/chroot_sources/tails.chroot
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# custom debootstrap script, setting some APT magic to log downloads:
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patch \
    --follow-symlinks \
    --output=/usr/share/debootstrap/scripts/tails-build-jessie \
    /usr/share/debootstrap/scripts/jessie \
    data/debootstrap/scripts/jessie.patch
sed -i "s,%%topdir%%,$(pwd)," /usr/share/debootstrap/scripts/tails-build-jessie