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  • Committer: Teddy Hogeborn
  • Date: 2019-07-27 10:11:45 UTC
  • mto: This revision was merged to the branch mainline in revision 384.
  • Revision ID: teddy@recompile.se-20190727101145-jnpbpf8220gldbcd
Add dracut(8) support

Add support for the dracut(8) system for generating initramfs image
files; dracut is an alternative to the "initramfs-tools" package.

* .bzrignore (dracut-module/password-agent): Ignore new binary file.
* dracut-module: New directory for the dracut module.
* INSTALL (Prerequisites/Libraries/Mandos Client): Add dracut as an
                                                   alternative to
                                                   initramfs-tools,
                                                   and also add GLib.
* Makefile (DRACUTMODULE, GLIB_CFLAGS, GLIB_LIBS): New.
  (CPROGS): Add "dracut-module/password-agent".
  (DOCS): Add "dracut-module/password-agent.8mandos".
  (dracut-module/password-agent.8mandos): New.
  (dracut-module/password-agent.8mandos.xhtml): - '' -
  (dracut-module/password-agent): - '' -
  (check): Add command to run tests of password-agent(8mandos).
  (install-client-nokey): Also install the dracut module directory,
                          its files, and the password-agent(8mandos)
                          manual page.
  (install-client): To update the initramfs image file, run
                    update-initramfs or dracut depending on what is
                    installed.
  (uninstall-client): - '' - and also uninstall the the files in the
                      dracut module directory, that directory itself,
                      and the password-agent(8mandos) manual page.
* debian/control (Build-Depends): Add "libglib2.0-dev (>=2.40)".
  (Package: mandos-client/Depends): Add "dracut (>= 044+241-3)" as an
                                    alternative dependency to
                                    initramfs-tools.
  (Package: mandos-client/Conflicts): New; set to
                                      "dracut-config-generic".
  (debian/mandos-client.README.Debian): Document alternative commands
                                        to update the initramfs image
                                        for when dracut is used.
* debian/mandos-client.postinst (update_initramfs): Use alternative
                                                    commands to update
                                                    the initramfs
                                                    image for when
                                                    dracut is used.
* debian/tests/control (password-agent, password-agent-suid): Add two
                                                              new tests.
* dracut-module/ask-password-mandos.path: New.
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/cmdline-mandos.sh: - '' -
* dracut-module/module-setup.sh: - '' -
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: - '' -
* initramfs-unpack: Use the dracut "skipcpio" command, if available.
                    Also be more flexible and try hard to detect where
                    compressed data starts.
* plugins.d/mandos-client.xml (SECURITY): Be more precise that the
                                          mandos-client binary might
                                          not always be setuid, but
                                          that the program assumes
                                          that it has been started
                                          that way.
* plugins.d/password-prompt.c: Add new "--prompt" option.
  (conflict_detection): First try to detect the new PID file of
                        plymouth.
  (main): Define and use new "prompt" variable.
* plugins.d/password-prompt.xml (SYNOPSIS): Show new --prompt option.
  (DESCRIPTION): Describe new behavior of looking for plymouth PID
                 file.
  (OPTIONS): Document new "--prompt" option.
  (ENVIRONMENT): Clarify that the CRYPTTAB_SOURCE and CRYPTTAB_NAME
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the CRYPTTAB_SOURCE and
                 CRYPTTAB_NAME comes from, since this can now be
                 either initramfs-tools or dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference, and add commas
              to separate the other references.
* plugins.d/plymouth.c: Add new "--prompt" and "--debug" options.
  (debug): New global flag.
  (fprintf_plus): New function, used for debug output.
  (exec_and_wait): Add extra "const" to "argv" argument.
  (main): Define and use new "prompt" variable.  Add debug output.
  (main/options, main/parse_opt): New; used to parse options.
* plugins.d/plymouth.xml (SYNOPSIS): Show new options.
  (OPTIONS): Document new options.
  (ENVIRONMENT): Clarify that the cryptsource and crypttarget
                 environment variables are not used if the --prompt
                 option is used.  Remove unnecessarily specific
                 details about where the cryptsource and crypttarget
                 comes from, since this can now be either
                 initramfs-tools or dracut.
  (EXAMPLE): Add an example using an option.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/splashy.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.
* plugins.d/usplash.xml (ENVIRONMENT): Clarify that the cryptsource
                                       and crypttarget environment
                                       variables are not used if the
                                       --prompt option is used.
                                       Remove unnecessarily specific
                                       details about where the
                                       cryptsource and crypttarget
                                       comes from, since this can now
                                       be either initramfs-tools or
                                       dracut.
  (SEE ALSO): Remove superfluous crypttab(5) reference.

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debian/mandos-client.postinst
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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 1>&2
 
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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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            # 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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            if [ -e /boot/initrd.img-"$kversion" ]; then
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                chmod go-r /boot/initrd.img-"$kversion"
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            else
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                # An initrd image has not yet been created for this
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                # kernel, possibly because this new kernel is about to
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                # be, but has not yet been, installed.  In this case,
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                # we create an empty file with the right permissions
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                # so that Dracut will preserve those permissions when
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                # it creates the real, new initrd image for this
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                # kernel.
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                install --mode=u=rw /dev/null \
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                        /boot/initrd.img-"$kversion"
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            fi
 
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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" 1>&2
 
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                /etc/kernel/postinst.d/dracut "$kversion"
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            fi
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        done
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    fi
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    if dpkg --compare-versions "$2" lt "1.0.3-1"; then
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        case "`getent passwd mandos`" in
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            *:Mandos\ password\ system,,,:/nonexistent:/bin/false)
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                usermod --login _mandos mandos 1>&2
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                groupmod --new-name _mandos mandos 1>&2
 
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                usermod --login _mandos mandos
 
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                groupmod --new-name _mandos mandos
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                return
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                ;;
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        esac
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    if ! getent passwd _mandos >/dev/null; then
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        adduser --system --force-badname --quiet --home /nonexistent \
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            --no-create-home --group --disabled-password \
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            --gecos "Mandos password system" _mandos 1>&2
 
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            --gecos "Mandos password system" _mandos
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    fi
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}
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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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        mandos-keygen 1>&2
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        gpg-connect-agent KILLAGENT /bye 1>&2 || :
 
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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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        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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              1>&2 2>/dev/null; then
 
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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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    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 1>&2 \
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                2>/dev/null; then
 
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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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        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 \
136
 
             --no-text 1>&2 2>/dev/null; then
 
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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 \
139
 
                 -out /etc/keys/mandos/tls-pubkey.pem -pubout \
140
 
                 1>&2; then
 
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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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    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 \
172
 
         --outfile "$DHFILE" 1>&2; then
 
158
         --outfile "$DHFILE"; then
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        # Otherwise try OpenSSL
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        if ! openssl genpkey -genparam -algorithm DH -out "$DHFILE" \
175
 
             -pkeyopt dh_paramgen_prime_len:3072 1>&2; then
 
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             -pkeyopt dh_paramgen_prime_len:3072; then
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            # None of the commands succeded; give up
177
 
            rm --force -- "$DHFILE"
 
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            rm -- "$DHFILE"
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            return 1
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        fi
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    fi
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    sed --in-place --expression='1i-----BEGIN DH PARAMETERS-----' \
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            "$DHFILE"
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    cp --archive "$DHFILE" /etc/keys/mandos/dhparams.pem
186
 
    rm --force -- "$DHFILE"
 
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    rm -- "$DHFILE"
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}
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case "$1" in