/// <summary>
/// Use an account's <see cref="TableSharedKeyCredential"/> to sign this
/// shared access signature values to produce the proper SAS query
/// parameters for authenticating requests.
/// </summary>
/// <param name="sharedKeyCredential">
/// The storage account's <see cref="TableSharedKeyCredential"/>.
/// </param>
/// <returns>
/// An instance of <see cref="TableSasQueryParameters"/>.
/// </returns>
public TableSasQueryParameters ToSasQueryParameters(TableSharedKeyCredential sharedKeyCredential)
{
sharedKeyCredential = sharedKeyCredential ?? throw Errors.ArgumentNull(nameof(sharedKeyCredential));
EnsureState();
var startTime = SasExtensions.FormatTimesForSasSigning(StartsOn);
var expiryTime = SasExtensions.FormatTimesForSasSigning(ExpiresOn);
// String to sign: http://msdn.microsoft.com/en-us/library/azure/dn140255.aspx
var stringToSign = string.Join("\n",
Permissions,
startTime,
expiryTime,
GetCanonicalName(sharedKeyCredential.AccountName, TableName),
Identifier,
IPRange.ToString(),
SasExtensions.ToProtocolString(Protocol),
Version,
PartitionKeyStart,
RowKeyStart,
PartitionKeyEnd,
RowKeyEnd);
var signature = TableSharedKeyCredential.ComputeSasSignature(sharedKeyCredential, stringToSign);
var p = new TableSasQueryParameters(
version: Version,
resourceTypes: default,
/// <summary>
/// Use an account's <see cref="TableSharedKeyCredential"/> to sign this
/// shared access signature values to produce the proper SAS query
/// parameters for authenticating requests.
/// </summary>
/// <param name="sharedKeyCredential">
/// The storage account's <see cref="TableSharedKeyCredential"/>.
/// </param>
/// <returns>
/// An instance of <see cref="TableAccountSasQueryParameters"/>.
/// </returns>
public TableAccountSasQueryParameters ToSasQueryParameters(TableSharedKeyCredential sharedKeyCredential)
{
sharedKeyCredential = sharedKeyCredential ?? throw Errors.ArgumentNull(nameof(sharedKeyCredential));
EnsureState();
var startTime = SasExtensions.FormatTimesForSasSigning(StartsOn);
var expiryTime = SasExtensions.FormatTimesForSasSigning(ExpiresOn);
// String to sign: https://docs.microsoft.com/en-us/rest/api/storageservices/create-account-sas#constructing-the-signature-string
var stringToSign = string.Join("\n",
sharedKeyCredential.AccountName,
Permissions,
TableConstants.Sas.TableAccountServices.Table,
ResourceTypes.ToPermissionsString(),
startTime,
expiryTime,
IPRange.ToString(),
Protocol.ToProtocolString(),
Version,
"");
var signature = TableSharedKeyCredential.ComputeSasSignature(sharedKeyCredential, stringToSign);
var p = new TableAccountSasQueryParameters(
version: Version,
resourceTypes: ResourceTypes,
protocol: Protocol,
startsOn: StartsOn,
expiresOn: ExpiresOn,
ipRange: IPRange,
identifier: Identifier,
resource: null,
permissions: Permissions,
signature: signature);
return(p);
}
/// <summary>
/// Creates a new instance of the <see cref="TableAccountSasQueryParameters"/>
/// type based on the supplied query parameters <paramref name="values"/>.
/// All SAS-related query parameters will be removed from
/// <paramref name="values"/>.
/// </summary>
/// <param name="values">URI query parameters</param>
internal TableAccountSasQueryParameters(
IDictionary <string, string> values)
{
// make copy, otherwise we'll get an exception when we remove
IEnumerable <KeyValuePair <string, string> > kvps = values.ToArray();
foreach (KeyValuePair <string, string> kv in kvps)
{
// these are already decoded
var isSasKey = true;
switch (kv.Key.ToUpperInvariant())
{
case TableConstants.Sas.Parameters.VersionUpper:
_version = kv.Value;
break;
case TableConstants.Sas.Parameters.ResourceTypesUpper:
_resourceTypes = SasExtensions.ParseResourceTypes(kv.Value);
break;
case TableConstants.Sas.Parameters.ProtocolUpper:
_protocol = SasExtensions.ParseProtocol(kv.Value);
break;
case TableConstants.Sas.Parameters.StartTimeUpper:
_startTime = DateTimeOffset.ParseExact(kv.Value, TableConstants.Sas.SasTimeFormat, CultureInfo.InvariantCulture);
break;
case TableConstants.Sas.Parameters.ExpiryTimeUpper:
_expiryTime = DateTimeOffset.ParseExact(kv.Value, TableConstants.Sas.SasTimeFormat, CultureInfo.InvariantCulture);
break;
case TableConstants.Sas.Parameters.IPRangeUpper:
_ipRange = SasIPRange.Parse(kv.Value);
break;
case TableConstants.Sas.Parameters.IdentifierUpper:
_identifier = kv.Value;
break;
case TableConstants.Sas.Parameters.ResourceUpper:
_resource = kv.Value;
break;
case TableConstants.Sas.Parameters.PermissionsUpper:
_permissions = kv.Value;
break;
case TableConstants.Sas.Parameters.SignatureUpper:
_signature = kv.Value;
break;
// We didn't recognize the query parameter
default:
isSasKey = false;
break;
}
// Remove the query parameter if it's part of the SAS
if (isSasKey)
{
values.Remove(kv.Key);
}
}
}