Sun Apr 22 00:02:56 UTC 2012

3 files changed, 208 insertions, 0 deletions

diff --git a/testing/cryptsetup/PKGBUILD b/testing/cryptsetup/PKGBUILD
new file mode 100644
index 000000000..5215a441d
--- /dev/null
+++ b/testing/cryptsetup/PKGBUILD
@@ -0,0 +1,34 @@
+# $Id: PKGBUILD 156539 2012-04-20 18:28:42Z eric $
+# Maintainer: Thomas Bächler <thomas@archlinux.org>
+pkgname=cryptsetup
+pkgver=1.4.1
+pkgrel=3
+pkgdesc="Userspace setup tool for transparent encryption of block devices using dm-crypt"
+arch=(i686 x86_64)
+license=('GPL')
+url="http://code.google.com/p/cryptsetup/"
+groups=('base')
+depends=('device-mapper>=2.02.85-2' 'libgcrypt' 'popt')
+conflicts=('mkinitcpio<0.7')
+options=('!libtool' '!emptydirs')
+source=(http://cryptsetup.googlecode.com/files/${pkgname}-${pkgver}.tar.bz2
+        http://cryptsetup.googlecode.com/files/${pkgname}-${pkgver}.tar.bz2.asc
+        encrypt_hook
+        encrypt_install)
+sha256sums=('82b143328c2b427ef2b89fb76c701d311c95b54093c21bbf22342f7b393bddcb'
+            '71c6506d4b6d0b22b9b6c2a68e604959e4c072af04680ed6acc0126c97bdbc88'
+            '811bbea1337106ad811731c746d73ee81039bad00aef52398e3a377ad0766757'
+            'ddbbdcb8eff93a3a7622ec633e90d5c0d68e3afbeaf942dc2309adab345047d4')
+build() {
+  cd "${srcdir}"/$pkgname-${pkgver}
+  ./configure --prefix=/usr --disable-static --sbindir=/sbin
+  make
+}
+
+package() {
+  cd "${srcdir}"/$pkgname-${pkgver}
+  make DESTDIR="${pkgdir}" install
+  # install hook
+  install -D -m644 "${srcdir}"/encrypt_hook "${pkgdir}"/usr/lib/initcpio/hooks/encrypt
+  install -D -m644 "${srcdir}"/encrypt_install "${pkgdir}"/usr/lib/initcpio/install/encrypt
+}
diff --git a/testing/cryptsetup/encrypt_hook b/testing/cryptsetup/encrypt_hook
new file mode 100644
index 000000000..956b18023
--- /dev/null
+++ b/testing/cryptsetup/encrypt_hook
@@ -0,0 +1,148 @@
+# vim: set ft=sh:
+# TODO this one needs some work to work with lots of different
+#       encryption schemes
+run_hook ()
+{
+    /sbin/modprobe -a -q dm-crypt >/dev/null 2>&1
+    if [ -e "/sys/class/misc/device-mapper" ]; then
+        if [ ! -e "/dev/mapper/control" ]; then
+            mkdir /dev/mapper
+            mknod "/dev/mapper/control" c $(cat /sys/class/misc/device-mapper/dev | sed 's|:| |')
+        fi
+        [ "${quiet}" = "y" ] && CSQUIET=">/dev/null"
+
+        # Get keyfile if specified
+        ckeyfile="/crypto_keyfile.bin"
+        if [ "x${cryptkey}" != "x" ]; then
+            ckdev="$(echo "${cryptkey}" | cut -d: -f1)"
+            ckarg1="$(echo "${cryptkey}" | cut -d: -f2)"
+            ckarg2="$(echo "${cryptkey}" | cut -d: -f3)"
+            if poll_device "${ckdev}" ${rootdelay}; then
+                case ${ckarg1} in
+                    *[!0-9]*)
+                        # Use a file on the device
+                        # ckarg1 is not numeric: ckarg1=filesystem, ckarg2=path
+                        mkdir /ckey
+                        mount -r -t ${ckarg1} ${ckdev} /ckey
+                        dd if=/ckey/${ckarg2} of=${ckeyfile} >/dev/null 2>&1
+                        umount /ckey
+                        ;;
+                    *)
+                        # Read raw data from the block device
+                        # ckarg1 is numeric: ckarg1=offset, ckarg2=length
+                        dd if=${ckdev} of=${ckeyfile} bs=1 skip=${ckarg1} count=${ckarg2} >/dev/null 2>&1
+                        ;;
+                esac
+            fi
+            [ ! -f ${ckeyfile} ] && echo "Keyfile could not be opened. Reverting to passphrase."
+        fi
+
+        if [ -n "${cryptdevice}" ]; then
+            DEPRECATED_CRYPT=0
+            cryptdev="$(echo "${cryptdevice}" | cut -d: -f1)"
+            cryptname="$(echo "${cryptdevice}" | cut -d: -f2)"
+            cryptoptions="$(echo "${cryptdevice}" | cut -d: -f3)"
+        else
+            DEPRECATED_CRYPT=1
+            cryptdev="${root}"
+            cryptname="root"
+        fi
+
+        warn_deprecated() {
+            echo "The syntax 'root=${root}' where '${root}' is an encrypted volume is deprecated"
+            echo "Use 'cryptdevice=${root}:root root=/dev/mapper/root' instead."
+        }
+
+        OLDIFS="${IFS}"
+        IFS=","
+        for cryptopt in ${cryptoptions}; do
+            case ${cryptopt} in
+                allow-discards)
+                    echo "Enabling TRIM/discard support."
+                    cryptargs="${cryptargs} --allow-discards"
+                    ;;
+                *)
+                    echo "Encryption option '${cryptopt}' not known, ignoring." >&2
+                    ;;
+            esac
+        done
+        IFS="${OLDIFS}"
+
+        if  poll_device "${cryptdev}" ${rootdelay}; then
+            if /sbin/cryptsetup isLuks ${cryptdev} >/dev/null 2>&1; then
+                [ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated
+                dopassphrase=1
+                # If keyfile exists, try to use that
+                if [ -f ${ckeyfile} ]; then
+                    if eval /sbin/cryptsetup --key-file ${ckeyfile} luksOpen ${cryptdev} ${cryptname} ${cryptargs} ${CSQUIET}; then
+                        dopassphrase=0
+                    else
+                        echo "Invalid keyfile. Reverting to passphrase."
+                    fi
+                fi
+                # Ask for a passphrase
+                if [ ${dopassphrase} -gt 0 ]; then
+                    echo ""
+                    echo "A password is required to access the ${cryptname} volume:"
+
+                    #loop until we get a real password
+                    while ! eval /sbin/cryptsetup luksOpen ${cryptdev} ${cryptname} ${cryptargs} ${CSQUIET}; do
+                        sleep 2;
+                    done
+                fi
+                if [ -e "/dev/mapper/${cryptname}" ]; then
+                    if [ ${DEPRECATED_CRYPT} -eq 1 ]; then
+                        export root="/dev/mapper/root"
+                    fi
+                else
+                    err "Password succeeded, but ${cryptname} creation failed, aborting..."
+                    exit 1
+                fi
+            elif [ -n "${crypto}" ]; then
+                [ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated
+                msg "Non-LUKS encrypted device found..."
+                if [ $# -ne 5 ]; then
+                    err "Verify parameter format: crypto=hash:cipher:keysize:offset:skip"
+                    err "Non-LUKS decryption not attempted..."
+                    return 1
+                fi
+                exe="/sbin/cryptsetup create ${cryptname} ${cryptdev} ${cryptargs}"
+                tmp=$(echo "${crypto}" | cut -d: -f1)
+                [ -n "${tmp}" ] && exe="${exe} --hash \"${tmp}\""
+                tmp=$(echo "${crypto}" | cut -d: -f2)
+                [ -n "${tmp}" ] && exe="${exe} --cipher \"${tmp}\""
+                tmp=$(echo "${crypto}" | cut -d: -f3)
+                [ -n "${tmp}" ] && exe="${exe} --key-size \"${tmp}\""
+                tmp=$(echo "${crypto}" | cut -d: -f4)
+                [ -n "${tmp}" ] && exe="${exe} --offset \"${tmp}\""
+                tmp=$(echo "${crypto}" | cut -d: -f5)
+                [ -n "${tmp}" ] && exe="${exe} --skip \"${tmp}\""
+                if [ -f ${ckeyfile} ]; then
+                    exe="${exe} --key-file ${ckeyfile}"
+                else
+                    exe="${exe} --verify-passphrase"
+                    echo ""
+                    echo "A password is required to access the ${cryptname} volume:"
+                fi
+                eval "${exe} ${CSQUIET}"
+
+                if [ $? -ne 0 ]; then
+                    err "Non-LUKS device decryption failed. verify format: "
+                    err "      crypto=hash:cipher:keysize:offset:skip"
+                    exit 1
+                fi
+                if [ -e "/dev/mapper/${cryptname}" ]; then
+                    if [ ${DEPRECATED_CRYPT} -eq 1 ]; then
+                        export root="/dev/mapper/root"
+                    fi
+                else
+                    err "Password succeeded, but ${cryptname} creation failed, aborting..."
+                    exit 1
+                fi
+            else
+                err "Failed to open encryption mapping: The device ${cryptdev} is not a LUKS volume and the crypto= paramater was not specified."
+            fi
+        fi
+        rm -f ${ckeyfile}
+    fi
+}
diff --git a/testing/cryptsetup/encrypt_install b/testing/cryptsetup/encrypt_install
new file mode 100644
index 000000000..9ed50e863
--- /dev/null
+++ b/testing/cryptsetup/encrypt_install
@@ -0,0 +1,26 @@
+# vim: set ft=sh:
+
+build()
+{
+    if [ -z "${CRYPTO_MODULES}" ]; then
+        MODULES=" dm-crypt $(all_modules "/crypto/") "
+    else
+        MODULES=" dm-crypt ${CRYPTO_MODULES} "
+    fi
+    FILES=""
+    SCRIPT="encrypt"
+    [ -f "/sbin/cryptsetup" ] && add_binary "/sbin/cryptsetup" "/sbin/cryptsetup"
+    [ -f "/usr/sbin/cryptsetup" ] && add_binary "/usr/sbin/cryptsetup" "/sbin/cryptsetup"
+    add_binary "/sbin/dmsetup"
+    add_file "/usr/lib/udev/rules.d/10-dm.rules"
+    add_file "/usr/lib/udev/rules.d/13-dm-disk.rules"
+    add_file "/usr/lib/udev/rules.d/95-dm-notify.rules"
+    add_file "/usr/lib/initcpio/udev/11-dm-initramfs.rules" "/usr/lib/udev/rules.d/11-dm-initramfs.rules"
+}
+
+help ()
+{
+cat<<HELPEOF
+  This hook allows for an encrypted root device.
+HELPEOF
+}