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  • Committer: Teddy Hogeborn
  • Date: 2024-11-17 16:53:00 UTC
  • mto: This revision was merged to the branch mainline in revision 412.
  • Revision ID: teddy@recompile.se-20241117165300-02hxm96s8cj9528e
mandos: Avoid closing configured server network socket

If we are passed a pre-created created network socket as a file
descriptor, we must avoid later closing it (when stdin, stdout and
stderr are dup2()ed over with /dev/null) by making sure that the
network file descriptor is not 0, 1, or 2, by creating a new file
descriptor if necessary.

However, when we create a new file descriptor we must check that the
new file descriptor is not 0, 1, or 2 either, and try again until we
get a suitable file descriptor.

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debian/mandos-client.postrm
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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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    update-initramfs -u -k all || :
 
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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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    elif command -v dracut >/dev/null; then
 
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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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            if [ "$kversion" != "*" ]; then
 
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                /etc/kernel/postinst.d/dracut "$kversion" 1>&2
 
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            fi
 
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        done
 
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    fi
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}
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case "$1" in
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        ;;
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    purge)
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        shred --remove /etc/keys/mandos/seckey.txt 2>/dev/null || :
 
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        shred --remove /etc/keys/mandos/seckey.txt \
 
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            /etc/keys/mandos/tls-privkey.pem 2>/dev/null || :
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        rm --force /etc/mandos/plugin-runner.conf \
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            /etc/keys/mandos/pubkey.txt \
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            /etc/keys/mandos/seckey.txt \
 
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            /etc/keys/mandos/tls-privkey.pem \
 
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            /etc/keys/mandos/tls-pubkey.pem \
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            /etc/keys/mandos/dhparams.pem 2>/dev/null
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        update_initramfs
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        ;;