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  • Committer: Teddy Hogeborn
  • Date: 2015-07-09 20:32:52 UTC
  • Revision ID: teddy@recompile.se-20150709203252-u10p7trfsxc1a9yp
Install client Diffie-Hellman parameters into initramfs.

* debian/control (Package: mandos-client/Recommends): Added
  "gnutls-bin | openssl" (to generate DH parameters).
* debian/mandos-client.postinst (create_dh_params): New function
                                                    called on package
                                                    configure.
* plugins.d/mandos-client.c (main): Bug fix: Work around Debian bug
                                    #633582 also for the
                                    "client-dhparams.pem" file.

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Lines of Context:
debian/mandos-client.postinst
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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/client-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/client-dhparams.pem
 
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    rm -- "$DHFILE"
 
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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_key "$@"
 
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        create_dh_params "$@" || :
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        update_initramfs "$@"
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        ;;
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    abort-upgrade|abort-deconfigure|abort-remove)