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  • Committer: Teddy Hogeborn
  • Date: 2019-07-14 23:39:53 UTC
  • mto: This revision was merged to the branch mainline in revision 384.
  • Revision ID: teddy@recompile.se-20190714233953-1zmsd3o062xloazt
Server bug fix: Allow restarts when using port= option

If the Mandos server is configured to use a specific TCP port to
listen to (by using the port= option in mandos.conf or the command
line --port option), that port becomes unusable for a time when the
Mandos server is restarted, making restarts fail.  Avoid this by, if a
port number is specified, using SO_REUSEADDR when binding the
listening TCP socket to a port number.

* mandos (IPv6_TCPServer.server_bind): Set self.allow_reuse_address if
                                       a port number is specified.

Reported-by: Juan Miguel Alcarria Herrera <juanmi@arco2000.es>

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debian/mandos-client.postinst
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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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    fi
 
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    update-initramfs -u -k all
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    if dpkg --compare-versions "$2" lt-nl "1.0.10-1"; then
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        # Make old initrd.img files unreadable too, in case they were