/// <summary>
/// Gets the canonicalized resource string for a Blob or Queue service request under the Shared Key authentication scheme.
/// </summary>
/// <param name="address">The resource URI.</param>
/// <param name="accountName">The name of the storage account.</param>
/// <returns>The canonicalized resource string.</returns>
protected static string GetCanonicalizedResourceVersion2(Uri address, string accountName)
{
// Resource path
StringBuilder resourcepath = new StringBuilder("/");
resourcepath.Append(accountName);
// Note that AbsolutePath starts with a '/'.
resourcepath.Append(address.AbsolutePath);
CanonicalizedString canonicalizedResource = new CanonicalizedString(resourcepath.ToString());
// query parameters
NameValueCollection queryVariables = Utilities.ParseQueryString(address.Query);
NameValueCollection lowercasedKeyNameValue = new NameValueCollection();
foreach (string key in queryVariables.Keys)
{
// sort the value and organize it as comma separated values
object[] values = queryVariables.GetValues(key);
ArrayList sortedValues = new ArrayList(values);
sortedValues.Sort();
StringBuilder stringValue = new StringBuilder();
foreach (object value in sortedValues)
{
if (stringValue.Length > 0)
{
stringValue.Append(",");
}
stringValue.Append(value.ToString());
}
// key turns out to be null for ?a&b&c&d
lowercasedKeyNameValue.Add(key == null ? key : key.ToLowerInvariant(), stringValue.ToString());
}
ArrayList sortedKeys = new ArrayList(lowercasedKeyNameValue.AllKeys);
sortedKeys.Sort();
foreach (string key in sortedKeys)
{
StringBuilder queryParamString = new StringBuilder(string.Empty);
queryParamString.Append(key);
queryParamString.Append(":");
queryParamString.Append(lowercasedKeyNameValue[key]);
canonicalizedResource.AppendCanonicalizedElement(queryParamString.ToString());
}
return(canonicalizedResource.Value);
}
/// <summary>
/// Canonicalizes the HTTP request.
/// </summary>
/// <param name="request">A web request.</param>
/// <param name="accountName">The name of the storage account.</param>
/// <returns>The canonicalized string for the request.</returns>
public override string CanonicalizeHttpRequest(HttpWebRequest request, string accountName)
{
CanonicalizedString canonicalizedString = new CanonicalizedString(request.Method);
string httpContentMD5Value = request.Headers[HttpRequestHeader.ContentMd5];
canonicalizedString.AppendCanonicalizedElement(httpContentMD5Value);
string contentType = request.ContentType;
canonicalizedString.AppendCanonicalizedElement(contentType);
string date = request.Headers[Constants.HeaderConstants.Date];
if (string.IsNullOrEmpty(date))
{
string errorMessage = string.Format(CultureInfo.CurrentCulture, SR.MissingXmsDateInHeader);
throw new ArgumentException(errorMessage, "request");
}
canonicalizedString.AppendCanonicalizedElement(date);
canonicalizedString.AppendCanonicalizedElement(GetCanonicalizedResource(request.Address, accountName));
return canonicalizedString.ToString();
}
/// <summary>
/// Add x-ms- prefixed headers in a fixed order.
/// </summary>
/// <param name="headers">The headers.</param>
/// <param name="canonicalizedString">The canonicalized string.</param>
private static void AddCanonicalizedHeaders(NameValueCollection headers, CanonicalizedString canonicalizedString)
{
// Look for header names that start with HeaderNames.PrefixForStorageHeader
// Then sort them in case-insensitive manner.
ArrayList httpStorageHeaderNameArray = new ArrayList();
foreach (string key in headers.Keys)
{
if (key.ToLowerInvariant().StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.Ordinal))
{
httpStorageHeaderNameArray.Add(key.ToLowerInvariant());
}
}
httpStorageHeaderNameArray.Sort();
// Now go through each header's values in the sorted order and append them to the canonicalized string.
foreach (string key in httpStorageHeaderNameArray)
{
StringBuilder canonicalizedElement = new StringBuilder(key);
string delimiter = ":";
ArrayList values = GetHeaderValues(headers, key);
// Go through values, unfold them, and then append them to the canonicalized element string.
foreach (string value in values)
{
// Unfolding is simply removal of CRLF.
string unfoldedValue = value.Replace("\r\n", string.Empty);
// Append it to the canonicalized element string.
canonicalizedElement.Append(delimiter);
canonicalizedElement.Append(unfoldedValue);
delimiter = ",";
}
// Now, add this canonicalized element to the canonicalized header string.
canonicalizedString.AppendCanonicalizedElement(canonicalizedElement.ToString());
}
}
/// <summary>
/// Constructs a canonicalized string from the request's headers that will be used to construct the signature
/// string for signing a Blob or Queue service request under the Shared Key Lite authentication scheme.
/// </summary>
/// <param name="address">The request URI.</param>
/// <param name="accountName">The storage account name.</param>
/// <param name="method">The verb to be used for the HTTP request.</param>
/// <param name="contentType">The content type of the HTTP request.</param>
/// <param name="contentLength">The length of the HTTP request, in bytes.</param>
/// <param name="date">The date/time specification for the HTTP request.</param>
/// <param name="headers">A collection of additional headers specified on the HTTP request.</param>
/// <returns>A canonicalized string.</returns>
protected static string CanonicalizeHttpRequestVersion2(
Uri address,
string accountName,
string method,
string contentType,
long contentLength,
string date,
NameValueCollection headers)
{
// The first element should be the Method of the request.
// I.e. GET, POST, PUT, or HEAD.
CanonicalizedString canonicalizedString = new CanonicalizedString(method);
// The next elements are
// If any element is missing it may be empty.
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-Encoding"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-Language"));
canonicalizedString.AppendCanonicalizedElement(contentLength == -1 ? String.Empty : contentLength.ToString());
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-MD5"));
canonicalizedString.AppendCanonicalizedElement(contentType);
// If x-ms-date header exists, Date should be empty string
canonicalizedString.AppendCanonicalizedElement(
GetStandardHeaderValue(headers, Constants.HeaderConstants.Date) != string.Empty
? string.Empty : GetStandardHeaderValue(headers, "Date"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Modified-Since"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Match"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-None-Match"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Unmodified-Since"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Range"));
AddCanonicalizedHeaders(headers, canonicalizedString);
AddCanonicalizedResourceVer2(address, accountName, canonicalizedString);
return(canonicalizedString.Value);
}
protected static string CanonicalizeHttpRequest(
Uri address,
string accountName,
string method,
string contentType,
string date,
NameValueCollection headers)
{
// The first element should be the Method of the request.
// I.e. GET, POST, PUT, or HEAD.
CanonicalizedString canonicalizedString = new CanonicalizedString(method);
// The second element should be the MD5 value.
// This is optional and may be empty.
string httpContentMD5Value = string.Empty;
// First extract all the content MD5 values from the header.
ArrayList httpContentMD5Values = GetHeaderValues(headers, "Content-MD5");
// If we only have one, then set it to the value we want to append to the canonicalized string.
if (httpContentMD5Values.Count == 1)
{
httpContentMD5Value = (string)httpContentMD5Values[0];
}
canonicalizedString.AppendCanonicalizedElement(httpContentMD5Value);
// The third element should be the content type.
canonicalizedString.AppendCanonicalizedElement(contentType);
// The fourth element should be the request date.
// See if there's an storage date header.
// If there's one, then don't use the date header.
ArrayList httpStorageDateValues = GetHeaderValues(headers, Constants.HeaderConstants.Date);
if (httpStorageDateValues.Count > 0)
{
date = null;
}
canonicalizedString.AppendCanonicalizedElement(date);
AddCanonicalizedHeaders(headers, canonicalizedString);
AddCanonicalizedResource(address, accountName, canonicalizedString);
return canonicalizedString.Value;
}
/// <summary>
/// Add x-ms- prefixed headers in a fixed order.
/// </summary>
/// <param name="headers">The headers.</param>
/// <param name="canonicalizedString">The canonicalized string.</param>
private static void AddCanonicalizedHeaders(NameValueCollection headers, CanonicalizedString canonicalizedString)
{
// Look for header names that start with HeaderNames.PrefixForStorageHeader
// Then sort them in case-insensitive manner.
ArrayList httpStorageHeaderNameArray = new ArrayList();
foreach (string key in headers.Keys)
{
if (key.ToLowerInvariant().StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.Ordinal))
{
httpStorageHeaderNameArray.Add(key.ToLowerInvariant());
}
}
httpStorageHeaderNameArray.Sort();
// Now go through each header's values in the sorted order and append them to the canonicalized string.
foreach (string key in httpStorageHeaderNameArray)
{
StringBuilder canonicalizedElement = new StringBuilder(key);
string delimiter = ":";
ArrayList values = GetHeaderValues(headers, key);
// Go through values, unfold them, and then append them to the canonicalized element string.
foreach (string value in values)
{
// Unfolding is simply removal of CRLF.
string unfoldedValue = value.Replace("\r\n", string.Empty);
// Append it to the canonicalized element string.
canonicalizedElement.Append(delimiter);
canonicalizedElement.Append(unfoldedValue);
delimiter = ",";
}
// Now, add this canonicalized element to the canonicalized header string.
canonicalizedString.AppendCanonicalizedElement(canonicalizedElement.ToString());
}
}
/// <summary>
/// Add the resource name.
/// </summary>
/// <param name="address">The address.</param>
/// <param name="accountName">Name of the account.</param>
/// <param name="canonicalizedString">The canonicalized string.</param>
private static void AddCanonicalizedResource(Uri address, string accountName, CanonicalizedString canonicalizedString)
{
// Now we append the canonicalized resource element.
string canonicalizedResource = GetCanonicalizedResource(address, accountName);
canonicalizedString.AppendCanonicalizedElement(canonicalizedResource);
}
/// <summary>
/// Gets the canonicalized resource string for a Blob or Queue service request under the Shared Key authentication scheme.
/// </summary>
/// <param name="address">The resource URI.</param>
/// <param name="accountName">The name of the storage account.</param>
/// <returns>The canonicalized resource string.</returns>
protected static string GetCanonicalizedResourceVersion2(Uri address, string accountName)
{
// Resource path
StringBuilder resourcepath = new StringBuilder("/");
resourcepath.Append(accountName);
// Note that AbsolutePath starts with a '/'.
resourcepath.Append(address.AbsolutePath);
CanonicalizedString canonicalizedResource = new CanonicalizedString(resourcepath.ToString());
// query parameters
NameValueCollection queryVariables = HttpUtility.ParseQueryString(address.Query);
NameValueCollection lowercasedKeyNameValue = new NameValueCollection();
foreach (string key in queryVariables.Keys)
{
// sort the value and organize it as comma separated values
object[] values = queryVariables.GetValues(key);
ArrayList sortedValues = new ArrayList(values);
sortedValues.Sort();
StringBuilder stringValue = new StringBuilder();
foreach (object value in sortedValues)
{
if (stringValue.Length > 0)
{
stringValue.Append(",");
}
stringValue.Append(value.ToString());
}
// key turns out to be null for ?a&b&c&d
lowercasedKeyNameValue.Add(key == null ? key : key.ToLowerInvariant(), stringValue.ToString());
}
ArrayList sortedKeys = new ArrayList(lowercasedKeyNameValue.AllKeys);
sortedKeys.Sort();
foreach (string key in sortedKeys)
{
StringBuilder queryParamString = new StringBuilder(string.Empty);
queryParamString.Append(key);
queryParamString.Append(":");
queryParamString.Append(lowercasedKeyNameValue[key]);
canonicalizedResource.AppendCanonicalizedElement(queryParamString.ToString());
}
return canonicalizedResource.Value;
}
/// <summary>
/// Constructs a canonicalized string from the request's headers that will be used to construct the signature
/// string for signing a Blob or Queue service request under the Shared Key Lite authentication scheme.
/// </summary>
/// <param name="address">The request URI.</param>
/// <param name="accountName">The storage account name.</param>
/// <param name="method">The verb to be used for the HTTP request.</param>
/// <param name="contentType">The content type of the HTTP request.</param>
/// <param name="contentLength">The length of the HTTP request, in bytes.</param>
/// <param name="date">The date/time specification for the HTTP request.</param>
/// <param name="headers">A collection of additional headers specified on the HTTP request.</param>
/// <returns>A canonicalized string.</returns>
protected static string CanonicalizeHttpRequestVersion2(
Uri address,
string accountName,
string method,
string contentType,
long contentLength,
string date,
NameValueCollection headers)
{
// The first element should be the Method of the request.
// I.e. GET, POST, PUT, or HEAD.
CanonicalizedString canonicalizedString = new CanonicalizedString(method);
// The next elements are
// If any element is missing it may be empty.
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-Encoding"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-Language"));
canonicalizedString.AppendCanonicalizedElement(contentLength == -1 ? String.Empty : contentLength.ToString());
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Content-MD5"));
canonicalizedString.AppendCanonicalizedElement(contentType);
// If x-ms-date header exists, Date should be empty string
canonicalizedString.AppendCanonicalizedElement(
GetStandardHeaderValue(headers, Constants.HeaderConstants.Date) != string.Empty
? string.Empty : GetStandardHeaderValue(headers, "Date"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Modified-Since"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Match"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-None-Match"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "If-Unmodified-Since"));
canonicalizedString.AppendCanonicalizedElement(GetStandardHeaderValue(headers, "Range"));
AddCanonicalizedHeaders(headers, canonicalizedString);
AddCanonicalizedResourceVer2(address, accountName, canonicalizedString);
return canonicalizedString.Value;
}