Class: AzureBlob::SharedKeySigner

Inherits:
Object
  • Object
show all
Defined in:
lib/azure_blob/shared_key_signer.rb

Overview

:nodoc:

Defined Under Namespace

Modules: SAS

Instance Method Summary collapse

Constructor Details

#initialize(account_name:, access_key:, host:) ⇒ SharedKeySigner

Returns a new instance of SharedKeySigner.



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# File 'lib/azure_blob/shared_key_signer.rb', line 10

def initialize(account_name:, access_key:, host:)
  @account_name = 
  @access_key = Base64.decode64(access_key)
  @host = host
  @remove_prefix = @host.end_with?("/#{@account_name}")
end

Instance Method Details

#authorization_header(uri:, verb:, headers: {}) ⇒ Object 



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# File 'lib/azure_blob/shared_key_signer.rb', line 17

def authorization_header(uri:, verb:, headers: {})
  canonicalized_headers = CanonicalizedHeaders.new(headers)
  canonicalized_resource = CanonicalizedResource.new(uri, )

  to_sign = [
    verb,
    *sanitize_headers(headers).fetch_values(
      :"Content-Encoding",
      :"Content-Language",
      :"Content-Length",
      :"Content-MD5",
      :"Content-Type",
      :"Date",
      :"If-Modified-Since",
      :"If-Match",
      :"If-None-Match",
      :"If-Unmodified-Since",
      :"Range"
    ) { nil },
    canonicalized_headers,
    canonicalized_resource,
  ].join("\n")

  "SharedKey #{account_name}:#{sign(to_sign)}"
end

#sas_token(uri, options = {}) ⇒ Object 



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# File 'lib/azure_blob/shared_key_signer.rb', line 43

def sas_token(uri, options = {})
  if remove_prefix
    uri = uri.clone
    uri.path = uri.path.delete_prefix("/#{account_name}")
  end

  to_sign = [
    options[:permissions],
    options[:start],
    options[:expiry],
    CanonicalizedResource.new(uri, , url_safe: false, service_name: :blob),
    options[:identifier],
    options[:ip],
    options[:protocol],
    SAS::Version,
    SAS::Resources::Blob,
    nil,
    nil,
    nil,
    options[:content_disposition],
    nil,
    nil,
    options[:content_type],
  ].join("\n")

  query = {
    SAS::Fields::Permissions => options[:permissions],
    SAS::Fields::Version => SAS::Version,
    SAS::Fields::Expiry => options[:expiry],
    SAS::Fields::Resource => SAS::Resources::Blob,
    SAS::Fields::Disposition => options[:content_disposition],
    SAS::Fields::Type => options[:content_type],
    SAS::Fields::Signature => sign(to_sign),
  }.reject { |_, value| value.nil? }

  URI.encode_www_form(**query)
end