Storage service API call - bash

Question

I try to create a file share on an existing Azure storage account via bash script. I only have the account name and key, but don't want to use login credentials.
This is what I have so far:
#!/bin/sh
DATE_ISO=$(date +"%Y-%m-%dT%H:%M:%S")
VERSION="2015-02-21"
curl --header "x-ms-version: ${VERSION}" --header "x-ms-date: ${DATE_ISO}" --header "Authorization: SharedKey mystorageaccount:?????" https://mystorageaccount.file.core.windows.net/myshare?restype=share
The documentation says, "Authorization" is required (syntax: Authorization="[SharedKey|SharedKeyLite] <AccountName>:<Signature>") and "Signature" is a Hash-based Message Authentication Code (HMAC) constructed from the request and computed by using the SHA256 algorithm, and then encoded by using Base64 encoding.
So how do I generate this Signature?

Answer 1

Try this to create Share with bash script.
#!/bin/sh
STORAGE_KEY="$1"
STORAGE_ACCOUNT="$2"
SHARE_NAME="$3"
DATE_ISO=$(TZ=GMT date "+%a, %d %h %Y %H:%M:%S %Z")
VERSION="2015-12-11"
HEADER_RESOURCE="x-ms-date:$DATE_ISO\nx-ms-version:$VERSION"
URL_RESOURCE="/$STORAGE_ACCOUNT/$SHARE_NAME\nrestype:share"
STRING_TO_SIGN="PUT\n\n\n\n\n\n\n\n\n\n\n\n$HEADER_RESOURCE\n$URL_RESOURCE"
DECODED_KEY="$(echo -n $STORAGE_KEY | base64 -d -w0 | xxd -p -c256)"
SIGN=$(printf "$STRING_TO_SIGN" | openssl dgst -sha256 -mac HMAC -macopt "hexkey:$DECODED_KEY" -binary | base64 -w0)
curl -X PUT \
-H "x-ms-date:$DATE_ISO" \
-H "x-ms-version:$VERSION" \
-H "Authorization: SharedKey $STORAGE_ACCOUNT:$SIGN" \
-H "Content-Length:0" \
"https://$STORAGE_ACCOUNT.file.core.windows.net/$SHARE_NAME?restype=share"
Try this to create Directory under the specified share.
#!/bin/sh
STORAGE_KEY="$1"
STORAGE_ACCOUNT="$2"
SHARE_NAME="$3"
DIRECTORY_NAME="$4"
DATE_ISO=$(TZ=GMT date "+%a, %d %h %Y %H:%M:%S %Z")
VERSION="2015-12-11"
HEADER_RESOURCE="x-ms-date:$DATE_ISO\nx-ms-version:$VERSION"
URL_RESOURCE="/$STORAGE_ACCOUNT/$SHARE_NAME/$DIRECTORY_NAME\nrestype:directory"
STRING_TO_SIGN="PUT\n\n\n\n\n\n\n\n\n\n\n\n$HEADER_RESOURCE\n$URL_RESOURCE"
DECODED_KEY="$(echo -n $STORAGE_KEY | base64 -d -w0 | xxd -p -c256)"
SIGN=$(printf "$STRING_TO_SIGN" | openssl dgst -sha256 -mac HMAC -macopt "hexkey:$DECODED_KEY" -binary | base64 -w0)
curl -X PUT \
-H "x-ms-date:$DATE_ISO" \
-H "x-ms-version:$VERSION" \
-H "Authorization: SharedKey $STORAGE_ACCOUNT:$SIGN" \
-H "Content-Length:0" \
"https://$STORAGE_ACCOUNT.file.core.windows.net/$SHARE_NAME/$DIRECTORY_NAME?restype=directory"