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live-build/ubuntu-desktop-next/hooks/99zz-check-uid-gid.chroot

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#!/bin/sh -eu

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ERRCNT=""

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passwd_hash=$(set -- $(md5sum /etc/passwd) && echo $1)

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shadow_hash=$(set -- $(cat /etc/shadow | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)

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group_length=$(cat /etc/group | wc -l)

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gshadow_length=$(cat /etc/gshadow | wc -l)

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passwd_orig_hash=$(set -- $(md5sum /etc/passwd.orig) && echo $1)

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shadow_orig_hash=$(set -- $(cat /etc/shadow.orig | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)

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group_orig_length=$(cat /etc/group.orig | wc -l)

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gshadow_orig_length=$(cat /etc/gshadow.orig | wc -l)

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if [ "$passwd_hash" != "$passwd_orig_hash" ]; then

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    echo "/etc/passwd has changed during setup." >&2

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    echo "The new /etc/passwd md5sum is: $passwd_hash" >&2

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    diff -Nrup /etc/passwd.orig /etc/passwd >&2 || true

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    ERRCNT=1

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fi

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if [ "$shadow_hash" != "$shadow_orig_hash" ]; then

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    echo "/etc/shadow has changed during setup." >&2

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    echo "The new /etc/shadow md5sum is: $shadow_hash" >&2

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    diff -Nrup /etc/shadow.orig /etc/shadow >&2 || true

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    ERRCNT=1

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fi

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if [ "$group_length" != "$group_orig_length" ]; then

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    echo "/etc/group has changed during setup." >&2

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    diff -Nrup /etc/group.orig /etc/group >&2 || true

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    ERRCNT=1

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fi

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if [ "$gshadow_length" != "$gshadow_orig_length" ]; then

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    echo "/etc/gshadow has changed during setup." >&2

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    diff -Nrup /etc/gshadow.orig /etc/gshadow >&2 || true

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    ERRCNT=1

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fi

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if [ -n "$ERRCNT" ]; then

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        echo "There were changes to the password database," >&2

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        echo "please adjust the values in the livecd-rootfs source in the file:" >&2

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        echo "live-build/ubuntu-core/hooks/00-uid-gid-fix.chroot_early" >&2

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        echo >&2

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        echo "Please check also if a maintainer script of the package" >&2

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        echo "that added these entries perhaps created a home directory and," >&2

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        echo "if needed, add code for creation of it to the above hook" >&2

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        exit 1

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fi

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rm /etc/passwd.orig /etc/shadow.orig /etc/group.orig /etc/gshadow.orig

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