First Implementation of cd-mount.sh

cd-mount.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 #=======================================================================
 #           FILE: cd-mount.sh
-#          USAGE: cd-mount.sh [<Verzeichnis, welches bearbeitet werden sollte>]
+#          USAGE: cd-mount.sh [<Imageverzeichnis>]
 #    DESCRIPTION:
 #        OPTIONS:
 #   REQUIREMENTS:
@@ -10,10 +10,89 @@
 #         AUTHOR: Jonas Tobias Hopusch <hopusch.jonastobias@fh-swf.de>
 #        COMPANY: Fachhochschule Südwestfalen
 #        VERSION: 1
-#        CREATED: 2023-01-08T14:10Z
+#        CREATED: 2023-01-10T16:32Z
 #       REVISION:
 #=======================================================================
+#-----------------------------------------------------------------------
+#   Abort script if undefined veriables are referenced
+#   and properly handle pipe failure
+#-----------------------------------------------------------------------
+set -uo pipefail
 
 #-----------------------------------------------------------------------
-#   COMMENT
+#   Script configuration
 #-----------------------------------------------------------------------
+imageFileEnding='.image'
+defaultTargetDir="$HOME/CDs/"
+
+#-----------------------------------------------------------------------
+#   Check if fuseiso and fusermount are present
+#-----------------------------------------------------------------------
+if ! which 'fuseiso' >/dev/null 2>&1; then
+    echo 'fuseiso is not installed'
+    exit 1
+elif ! which 'fusermount' >/dev/null 2>&1; then
+    echo 'fusermount is not installed'
+    exit 1
+fi
+
+#-----------------------------------------------------------------------
+#   Determine target directory
+#-----------------------------------------------------------------------
+if [ -v 1 ]; then
+    targetDir="$1"
+else
+    targetDir="$defaultTargetDir"
+fi
+
+#-----------------------------------------------------------------------
+#   Search for matching images
+#-----------------------------------------------------------------------
+
+#shellcheck disable=SC2006
+readarray -t imageFiles \
+     <<<"`find "$targetDir" -type f -iname "*$imageFileEnding"`" \
+    >/dev/null 2>&1
+
+#-----------------------------------------------------------------------
+#   Per Image, do the following
+#-----------------------------------------------------------------------
+amountOfImages="${#imageFiles[@]}"
+successfullyMountedImages=0
+for image in "${imageFiles[@]}"; do
+    # Count how many there are in total
+    #((amountOfImages++))
+
+    # Validate that it can be accessed
+    if ! [ -f "$image" ]; then
+        echo "$image is not a regular file. Skipping."
+        continue
+    elif ! [ -r "$image" ]; then
+        echo "$image is not readable. Skipping."
+        continue
+    fi
+
+    # Determine the location the image should be mounted to and try to ensure
+    # it exists
+    mountDirName="${image:0:((${#image} - ${#imageFileEnding}))}"
+    if ! mkdir -p "$mountDirName"; then
+        echo "Could not create mount destination directory $mountDirName. Skipping!"
+        continue
+    fi
+
+    # Check if there's already an image mounted at the destination
+    #shellcheck disable=SC2006
+    fullPathMountDir="`cd "$mountDirName" && pwd`"
+    if grep "^fuseiso $fullPathMountDir" /proc/mounts >/dev/null 2>&1; then
+        echo "Something is already mounted to $mountDirName. Skipping"
+        continue
+    fi
+
+    # Attempt to mount the image to the destination directory
+    if fuseiso "$image" "$mountDirName"; then
+        echo "$image has been mounted to $mountDirName"
+        ((successfullyMountedImages++))
+    fi
+done
+
+echo "$successfullyMountedImages/$amountOfImages images have been mounted successfully"