biharitomi · November 23, 2015 17:57 · Nov 23, 2015
diff --git a/lease_blob.sh b/lease_blob.sh
@@ -0,0 +1,48 @@
+# List the blobs in an Azure storage container.
+
+echo "usage: ${0##*/} <storage-account-name> <container-name> <access-key>"
+
+storage_account="$1"
+container_name="$2"
+access_key="$4"
+
+blob_store_url="blob.core.windows.net"
+http="https"
+
+blob_name="$3"
+
+authorization="SharedKey"
+
+request_method="PUT"
+request_date=$(TZ=GMT date "+%a, %d %h %Y %H:%M:%S %Z")
+storage_service_version="2011-08-18"
+
+# HTTP Request headers
+x_ms_date_h="x-ms-date:$request_date"
+x_ms_version_h="x-ms-version:$storage_service_version"
+x_ms_lease_action="x-ms-lease-action:break"
+
+# Build the signature string
+canonicalized_headers="${x_ms_date_h}\n${x_ms_lease_action}\n${x_ms_version_h}"
+canonicalized_resource="/${storage_account}/${container_name}/${blob_name}"
+
+string_to_sign="${request_method}\n\n\n2000\n\n\n\n\n\n\n\n\n${canonicalized_headers}\n${canonicalized_resource}\ncomp:lease"
+
+echo -e "$string_to_sign"
+
+# Decode the Base64 encoded access key, convert to Hex.
+decoded_hex_key="$(echo -n $access_key | base64 -d -w0 | xxd -p -c256)"
+
+# Create the HMAC signature for the Authorization header
+signature=$(printf "$string_to_sign" | openssl dgst -sha256 -mac HMAC -macopt "hexkey:$decoded_hex_key" -binary |  base64 -w0)
+
+authorization_header="Authorization: $authorization $storage_account:$signature"
+
+curl \
+  -X PUT \
+  -H "$x_ms_date_h" \
+  -H "$x_ms_version_h" \
+  -H "$x_ms_lease_action" \
+  -H "Content-Length: 2000" \
+  -H "$authorization_header" \
+  "https://${storage_account}.blob.core.windows.net/${container_name}/${blob_name}?comp=lease"
diff --git a/usage.md b/usage.md
@@ -0,0 +1,3 @@
+```
+./lease_blob.sh 0095233545063f2097westus vm-images cb-centos71-amb210-2015-08-25-ofs_2015-August-25_10-1-os-2015-08-25.vhd 4vTIvDrTVNMS21svn1BFYzQmHj7Ho7cQpT8AqS0wrMawc80nFSd4lMHuTQTYqlZV8Tr3lm6+D2ZFVlkfkXAGow==
+```