Add live-build/ubuntu-core/hooks/99zz-check-uid-gid.chroot, copy of

live-build/ubuntu-touch/hooks/99zz-check-uid-gid.chroot with just the
error message changed. Currently, the passwd/group checks weren't run.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.278) UNRELEASED; urgency=medium
+
+  * Add live-build/ubuntu-core/hooks/99zz-check-uid-gid.chroot, copy of
+    live-build/ubuntu-touch/hooks/99zz-check-uid-gid.chroot with just the
+    error message changed. Currently, the passwd/group checks weren't run.
+
+ -- Loïc Minier <loic.minier@ubuntu.com>  Wed, 04 Feb 2015 13:39:26 +0100
+
 livecd-rootfs (2.277) vivid; urgency=medium
 
   * live-build/ubuntu-core/hooks/00-uid-gid-fix.chroot_early: add new "input"

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

@@ -0,0 +1,52 @@
+#!/bin/sh -eu
+
+ERRCNT=""
+
+passwd_hash=$(set -- $(md5sum /etc/passwd) && echo $1)
+shadow_hash=$(set -- $(cat /etc/shadow | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)
+group_length=$(cat /etc/group | wc -l)
+gshadow_length=$(cat /etc/gshadow | wc -l)
+
+passwd_orig_hash=$(set -- $(md5sum /etc/passwd.orig) && echo $1)
+shadow_orig_hash=$(set -- $(cat /etc/shadow.orig | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)
+group_orig_length=$(cat /etc/group.orig | wc -l)
+gshadow_orig_length=$(cat /etc/gshadow.orig | wc -l)
+
+if [ "$passwd_hash" != "$passwd_orig_hash" ]; then
+    echo "/etc/passwd has changed during setup." >&2
+    echo "The new /etc/passwd md5sum is: $passwd_hash" >&2
+    diff -Nrup /etc/passwd.orig /etc/passwd >&2 || true
+    ERRCNT=1
+fi
+
+if [ "$shadow_hash" != "$shadow_orig_hash" ]; then
+    echo "/etc/shadow has changed during setup." >&2
+    echo "The new /etc/shadow md5sum is: $shadow_hash" >&2
+    diff -Nrup /etc/shadow.orig /etc/shadow >&2 || true
+    ERRCNT=1
+fi
+
+if [ "$group_length" != "$group_orig_length" ]; then
+    echo "/etc/group has changed during setup." >&2
+    diff -Nrup /etc/group.orig /etc/group >&2 || true
+    ERRCNT=1
+fi
+
+if [ "$gshadow_length" != "$gshadow_orig_length" ]; then
+    echo "/etc/gshadow has changed during setup." >&2
+    diff -Nrup /etc/gshadow.orig /etc/gshadow >&2 || true
+    ERRCNT=1
+fi
+
+if [ -n "$ERRCNT" ]; then
+	echo "There were changes to the password database," >&2
+	echo "please adjust the values in the livecd-rootfs source in the file:" >&2
+	echo "live-build/ubuntu-core/hooks/00-uid-gid-fix.chroot_early" >&2
+	echo >&2
+	echo "Please check also if a maintainer script of the package" >&2
+	echo "that added these entries perhaps created a home directory and," >&2
+	echo "if needed, add code for creation of it to the above hook" >&2
+	exit 1
+fi
+
+rm /etc/passwd.orig /etc/shadow.orig /etc/group.orig /etc/gshadow.orig