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  • Committer: Teddy Hogeborn
  • Date: 2014-07-25 22:44:20 UTC
  • mto: This revision was merged to the branch mainline in revision 724.
  • Revision ID: teddy@recompile.se-20140725224420-4a5ct2ptt0hsc92z
Require Python 2.7.

This is in preparation for the eventual move to Python 3, which will
happen as soon as all Python modules required by Mandos are available.
The mandos-ctl and mandos-monitor programs are already portable
between Python 2.6 and Python 3 without changes; this change will
bring the requirement up to Python 2.7.

* INSTALL (Prerequisites/Libraries/Mandos Server): Document
                                                   requirement of
                                                   Python 2.7; remove
                                                   Python-argparse
                                                   which is in the
                                                   Python 2.7 standard
                                                   library.
* debian/control (Source: mandos/Build-Depends-Indep): Depend on
                                                       exactly the
                                                       python2.7
                                                       package and all
                                                       the Python 2.7
                                                       versions of the
                                                       python modules.
  (Package: mandos/Depends): - '' - but still depend on python (<=2.7)
                            and the generic versions of the Python
                            modules; this is for mandos-ctl and
                            mandos-monitor, both of which are
                            compatible with Python 3, and use
                            #!/usr/bin/python.
* mandos: Use #!/usr/bin/python2.7 instead of #!/usr/bin/python.

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debian/mandos-client.postinst
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# If prerm fails during replacement due to conflict:
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#       <postinst> abort-remove in-favour <new-package> <version>
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. /usr/share/debconf/confmodule
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set -e
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# Update the initial RAM file system image
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update_initramfs()
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{
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    if command -v update-initramfs >/dev/null; then
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        update-initramfs -k all -u
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    elif command -v dracut >/dev/null; then
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        dracut_version="`dpkg-query --showformat='${Version}' --show dracut`"
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        if dpkg --compare-versions "$dracut_version" lt 043-1 \
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                && bash -c '. /etc/dracut.conf; . /etc/dracut.conf.d/*; [ "$hostonly" != yes ]'; then
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            echo 'Dracut is not configured to use hostonly mode!' >&2
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            return 1
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        fi
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        # Logic taken from dracut.postinst
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        for kernel in /boot/vmlinu[xz]-*; do
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            kversion="${kernel#/boot/vmlinu[xz]-}"
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            # Dracut preserves old permissions of initramfs image
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            # files, so we adjust permissions before creating new
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            # initramfs image containing secret keys.
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            chmod go-r /boot/initrd.img-"$kversion"
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            if [ "$kversion" != "*" ]; then
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                /etc/kernel/postinst.d/dracut "$kversion"
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            fi
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        done
 
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    if [ -x /usr/sbin/update-initramfs ]; then
 
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        update-initramfs -u -k all
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    fi
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    if dpkg --compare-versions "$2" lt-nl "1.0.10-1"; then
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    fi
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}
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# Create client key pairs
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create_keys(){
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    # If the OpenPGP key files do not exist, generate all keys using
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    # mandos-keygen
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    if ! [ -r /etc/keys/mandos/pubkey.txt \
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              -a -r /etc/keys/mandos/seckey.txt ]; then
 
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# Create client key pair
 
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create_key(){
 
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    if [ -r /etc/keys/mandos/pubkey.txt \
 
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        -a -r /etc/keys/mandos/seckey.txt ]; then
 
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        return 0
 
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    fi
 
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    if [ -x /usr/sbin/mandos-keygen ]; then
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        mandos-keygen
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        gpg-connect-agent KILLAGENT /bye || :
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        return 0
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    fi
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    # Remove any bad TLS keys by 1.8.0-1
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    if dpkg --compare-versions "$2" eq "1.8.0-1" \
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       || dpkg --compare-versions "$2" eq "1.8.0-1~bpo9+1"; then
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        # Is the key bad?
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        if ! certtool --password='' \
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             --load-privkey=/etc/keys/mandos/tls-privkey.pem \
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             --outfile=/dev/null --pubkey-info --no-text \
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             2>/dev/null; then
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            shred --remove -- /etc/keys/mandos/tls-privkey.pem \
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                  2>/dev/null || :
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            rm --force -- /etc/keys/mandos/tls-pubkey.pem
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        fi
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    fi
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    # If the TLS keys already exists, do nothing
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    if [ -r /etc/keys/mandos/tls-privkey.pem \
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            -a -r /etc/keys/mandos/tls-pubkey.pem ]; then
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        return 0
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    fi
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    # Try to create the TLS keys
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    TLS_PRIVKEYTMP="`mktemp -t mandos-client-privkey.XXXXXXXXXX`"
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    if certtool --generate-privkey --password='' \
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                --outfile "$TLS_PRIVKEYTMP" --sec-param ultra \
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                --key-type=ed25519 --pkcs8 --no-text 2>/dev/null; then
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        local umask=$(umask)
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        umask 077
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        cp --archive "$TLS_PRIVKEYTMP" /etc/keys/mandos/tls-privkey.pem
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        shred --remove -- "$TLS_PRIVKEYTMP" 2>/dev/null || :
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        # First try certtool from GnuTLS
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        if ! certtool --password='' \
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             --load-privkey=/etc/keys/mandos/tls-privkey.pem \
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             --outfile=/etc/keys/mandos/tls-pubkey.pem --pubkey-info \
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             --no-text 2>/dev/null; then
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            # Otherwise try OpenSSL
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            if ! openssl pkey -in /etc/keys/mandos/tls-privkey.pem \
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                 -out /etc/keys/mandos/tls-pubkey.pem -pubout; then
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                rm --force /etc/keys/mandos/tls-pubkey.pem
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                # None of the commands succeded; give up
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                umask $umask
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                return 1
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            fi
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        fi
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        umask $umask
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        key_id=$(mandos-keygen --passfile=/dev/null \
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                     | grep --regexp="^key_id[ =]")
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        db_version 2.0
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        db_fset mandos-client/key_id seen false
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        db_reset mandos-client/key_id
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        db_subst mandos-client/key_id key_id $key_id
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        db_input critical mandos-client/key_id || true
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        db_go
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        db_stop
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    else
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        shred --remove -- "$TLS_PRIVKEYTMP" 2>/dev/null || :
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    fi
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}
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create_dh_params(){
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    if [ -r /etc/keys/mandos/dhparams.pem ]; then
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        return 0
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    fi
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    # Create a Diffe-Hellman parameters file
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    DHFILE="`mktemp -t mandos-client-dh-parameters.XXXXXXXXXX.pem`"
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    # First try certtool from GnuTLS
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    if ! certtool --generate-dh-params --sec-param high \
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         --outfile "$DHFILE"; then
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        # Otherwise try OpenSSL
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        if ! openssl genpkey -genparam -algorithm DH -out "$DHFILE" \
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             -pkeyopt dh_paramgen_prime_len:3072; then
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            # None of the commands succeded; give up
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            rm -- "$DHFILE"
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            return 1
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        fi
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    fi
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    sed --in-place --expression='0,/^-----BEGIN DH PARAMETERS-----$/d' \
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        "$DHFILE"
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    sed --in-place --expression='1i-----BEGIN DH PARAMETERS-----' \
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            "$DHFILE"
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    cp --archive "$DHFILE" /etc/keys/mandos/dhparams.pem
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    rm -- "$DHFILE"
 
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    fi
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}
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case "$1" in
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    configure)
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        add_mandos_user "$@"
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        create_keys "$@"
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        create_dh_params "$@" || :
 
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        create_key "$@"
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        update_initramfs "$@"
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        if dpkg --compare-versions "$2" lt-nl "1.7.10-1"; then
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            PLUGINHELPERDIR=/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null)/mandos/plugin-helpers
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            if ! dpkg-statoverride --list "$PLUGINHELPERDIR" \
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                 >/dev/null 2>&1; then
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                chmod u=rwx,go= -- "$PLUGINHELPERDIR"
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            fi
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            if ! dpkg-statoverride --list /etc/mandos/plugin-helpers \
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                 >/dev/null 2>&1; then
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                chmod u=rwx,go= -- /etc/mandos/plugin-helpers
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            fi
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        fi
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        ;;
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    abort-upgrade|abort-deconfigure|abort-remove)
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        ;;