Reimplementation.

[etcdiff.git] / etcdiff.include

diff --git a/etcdiff.include b/etcdiff.include
new file mode 100644 (file)
index 0000000..e26498c
--- /dev/null
+++ b/etcdiff.include
@@ -0,0 +1,135 @@
+#!/bin/sh
+
+_get_unpack_package()
+{
+  PACKAGE=$1
+  FILEPATH=$(apt-cache show $PACKAGE | grep ^Filename | cut -d ' ' -f 2-)
+
+  if [ "x$FILEPATH" = "x" ];
+  then
+    echo "Package '$PACKAGE' does not exist."
+    exit 1
+  fi
+
+  ARCHIVE=$(basename $FILEPATH)
+
+  wget -q -nc -c $DEBIANMIRROR/$FILEPATH -P $CACHEDIR && \
+    ([ -d $TEMPDIR/$PACKAGE ] || mkdir $TEMPDIR/$PACKAGE) && \
+    dpkg -x $CACHEDIR/$ARCHIVE $TEMPDIR/$PACKAGE
+}
+
+_do_etcdiff()
+{
+  ETCBASEDIR=$1
+  PREFIX=$2
+
+  REPORT_NAME=$(basename $ETCBASEDIR)
+
+  # Report diff between debian conf and our local one
+  rm -f $REPORTDIR/$REPORT_NAME.diff
+  find $PREFIX/etc -type f | \
+  while read file;
+  do
+    diff -ruN $ETCBASEDIR/${file#$PREFIX/} ${file#$PREFIX} >> $REPORTDIR/$REPORT_NAME.diff
+  done
+
+  # Report symlinks in /etc
+  rm -f $REPORTDIR/$REPORT_NAME.symlinks
+  find $PREFIX/etc -type l | \
+  while read file;
+  do
+    stat -c '%N' $file >> $REPORTDIR/$REPORT_NAME.symlinks
+  done
+}
+
+etchdiff_system()
+{
+  PACKAGES=$(dpkg --get-selections | grep 'install$' | cut -f 1 -d '   ')
+
+  rm $PROMPT_RM -rf $TEMPDIR/__debian_etc  && mkdir $TEMPDIR/__debian_etc
+
+  for p in $PACKAGES;
+  do
+
+    # Skip packages which don't put anything in /etc
+    if ! dpkg -L $p | grep -q '/etc/';
+    then
+      continue
+    fi
+
+    echo "Getting package $p..."
+    _get_unpack_package $p
+
+    # save the original etc dir for later processing
+    cp -ir $TEMPDIR/$PACKAGE/etc $TEMPDIR/__debian_etc
+  done
+
+  _do_etcdiff $TEMPDIR/__debian_etc
+
+  rm -rf $TEMPDIR/__debian_etc
+}
+
+etcdiff_by_package()
+{
+  PACKAGE=$1
+
+  if dpkg --status $PACKAGE | grep -q 'not-installed';
+  then
+    echo "Package '$PACKAGE' not installed"
+    return 1
+  fi
+
+  # Skip packages which don't put anything in /etc
+  if ! dpkg -L $PACKAGE | grep -q '/etc/';
+  then
+    echo "$PACKAGE does not put any file in /etc"
+    return 1
+  fi
+
+  _get_unpack_package $PACKAGE
+
+  _do_etcdiff $TEMPDIR/$PACKAGE $TEMPDIR/$PACKAGE
+
+  return 0
+}
+
+etcdiff_by_file()
+{
+  FILE=$1
+
+  if [ ! -e $FILE ];
+  then
+    echo "ERROR, file $FILE does not exist."
+    return 1;
+  fi
+
+  if [ ! -f $FILE ];
+  then
+    echo "ERROR, file $FILE is not a regular file."
+    return 1;
+  fi
+
+  if [ $FILE = ${FILE#/etc/} ];
+  then
+    echo "ERROR, file path must begin with /etc/."
+    return 1;
+  fi
+
+  # Find out which installed package provides the config file
+  PACKAGE=$(dpkg-query -S "$FILE" | cut -d ':' -f 1 | uniq 2> /dev/null)
+
+  REPORT_NAME=$(basename $FILE)
+
+  if [ "x$PACKAGE" = "x" ];
+  then
+    diff -ruN /dev/null $FILE > $REPORTDIR/$REPORT_NAME.diff
+  else
+    _get_unpack_package $PACKAGE
+    diff -ruN $FILE $TEMPDIR/$PACKAGE/$FILE > $REPORTDIR/$REPORT_NAME.diff
+  fi
+
+  if [ $(stat -c '%s' $REPORTDIR/$REPORT_NAME.diff) -eq 0 ];
+  then
+    rm -f $REPORTDIR/$REPORT_NAME.diff
+  fi
+}