feat(encryption): refactor encryption provider scripts, update KMS integration, and enhance key management

ansible/roles/encryption/files/open_volume

@@ -1,6 +1,8 @@
 #!/bin/bash
 if [ "$#" -ne 3 ]; then
     echo "Usage: $0 <keyserver>" "<image>" "<device>"
+    echo "Example: $0 https://keyserver.example.com /path/to/image.img <device>"
+    echo "Example: $0 https://keyserver.example.com /path/to/image.img /dev/mapper/crypt1"
     exit 1
 fi
 

ansible/roles/encryption/files/start_encryption_provider

@@ -0,0 +1,78 @@
+#!/bin/bash
+
+#!/bin/bash
+if [ "$#" -lt 1 ]; then
+    echo "Usage: $0 <keyserver>" "[socket]"
+    echo "Example: $0 https://keyserver.example.com"
+    echo "Example: $0 https://keyserver.example.com /var/run/kmsplugin/socket.sock"
+    exit 1
+fi
+
+KEYSERVER=$1
+SOCKET=${2:-/var/run/kmsplugin/socket.sock}
+
+# if keyserver is not reachable, exit
+if ! curl -s -I $KEYSERVER > /dev/null; then
+    logger "start_encryption_provider: Key server not reachable, exiting."
+    exit 1
+fi
+
+uuid=$(cat /proc/cpuinfo | grep 'model name' | head -1)
+uuid+=$(ip link show eth0 | grep ether | awk '{print $2}')
+uuid+=$(sudo dmidecode -s system-uuid)
+KEYID=$(echo -n "$uuid" | md5sum | awk '{print $1}')
+
+logger "start_encryption_provider: Downloading key from key server,"
+LOCALKEYFILE=$(mktemp)
+curl -s -o $LOCALKEYFILE $KEYSERVER/$KEYID-encryption-service-credentials.json
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to download key from key server"
+    rm $LOCALKEYFILE
+    exit 1
+fi
+
+logger "start_encryption_provider: Key downloaded successfully, extracting credentials"
+export AWS_ACCESS_KEY_ID=$(jq -r '.access_key' $LOCALKEYFILE)
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to extract AWS credentials from key file"
+    rm $LOCALKEYFILE
+    exit 1
+fi
+
+export AWS_SECRET_ACCESS_KEY=$(jq -r '.secret_key' $LOCALKEYFILE)
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to extract AWS credentials from key file"
+    rm $LOCALKEYFILE
+    exit 1
+fi
+KEYARN=$(jq -r '.key_arn' $LOCALKEYFILE)
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to extract KMS key ARN from key file"
+    rm $LOCALKEYFILE
+    exit 1
+fi
+REGION=$(jq -r '.region' $LOCALKEYFILE)
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to extract region from key file"
+    rm $LOCALKEYFILE
+    exit 1
+fi
+
+logger "start_encryption_provider: Removing key file"
+rm $LOCALKEYFILE
+
+logger "start_encryption_provider: Starting encryption provider"
+mkdir {{ encryption_kms_socket_dir | dirname }} }} 2>/dev/null || true
+chmod 700 {{ encryption_kms_socket_dir | dirname }} 2>/dev/null
+
+if [ ! -f /usr/local/bin/aws-encryption-provider ]; then
+    logger "start_encryption_provider: Encryption provider not found, exiting."
+    exit 1
+fi
+
+/usr/local/bin/aws-encryption-provider --key=$KEYARN --region=$REGION --listen=$SOCKET
+if [ $? -ne 0 ]; then
+    logger "start_encryption_provider: Failed to start encryption provider"
+    exit 1
+fi
+exit 0