private RoleRow GetUserInRole(DataServiceContext svc, string rolename, string username)
{
SecUtility.CheckParameter(ref username, true, true, true, Constants.MaxTableUsernameLength, "username");
SecUtility.CheckParameter(ref rolename, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from user in queryObj
where user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) &&
user.RowKey == SecUtility.Escape(rolename)
select user).AsTableServiceQuery();
try
{
IEnumerable <RoleRow> userRows = query.Execute();
return(userRows.FirstOrDefault());
}
catch (InvalidOperationException e)
{
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound)
{
return(null);
}
throw;
}
}
catch (Exception e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
private SessionRow GetSession(string id, DataServiceContext context)
{
try
{
DataServiceQuery <SessionRow> queryObj = context.CreateQuery <SessionRow>(tableName);
var query = (from session in queryObj
where session.PartitionKey == SecUtility.CombineToKey(applicationName, id)
select session).AsTableServiceQuery();
IEnumerable <SessionRow> sessions = query.Execute();
// enumerate the result and store it in a list
var sessionList = new List <SessionRow>(sessions);
if (sessionList.Count() == 1)
{
return(sessionList.First());
}
if (sessionList.Count() > 1)
{
throw new ProviderException("Multiple sessions with the same name!");
}
return(null);
}
catch (Exception e)
{
throw new ProviderException("Error accessing storage.", e);
}
}
public override bool RoleExists(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from role in queryObj
where role.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty) &&
role.RowKey == SecUtility.Escape(roleName)
select role).AsTableServiceQuery();
try
{
// this query addresses exactly one result
// we thus should get an exception if there is no element
return(query.Execute().Any());
}
catch (InvalidOperationException e)
{
if ((e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound) ||
(e.InnerException.InnerException is DataServiceClientException &&
(e.InnerException.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound))
{
return(false);
}
throw;
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// applicationName + userName is partitionKey
// roleName is rowKey
public RoleRow(string applicationName, string roleName, string userName)
: base(SecUtility.CombineToKey(applicationName, userName), SecUtility.Escape(roleName))
{
SecUtility.CheckParameter(ref applicationName, true, true, true, Constants.MaxTableApplicationNameLength, "applicationName");
SecUtility.CheckParameter(ref roleName, true, true, true, 512, "roleName");
SecUtility.CheckParameter(ref userName, true, false, true, Constants.MaxTableUsernameLength, "userName");
ApplicationName = applicationName;
RoleName = roleName;
UserName = userName;
}
public override bool IsUserInRole(string username, string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
SecUtility.CheckParameter(ref username, true, false, true, Constants.MaxTableUsernameLength, "username");
if (username.Length < 1)
{
return(false);
}
try
{
TableServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from user in queryObj
where (user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) ||
user.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)) &&
user.RowKey == SecUtility.Escape(roleName)
select user).AsTableServiceQuery();
IEnumerable <RoleRow> userRows = query.Execute();
if (userRows == null)
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
var l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
RoleRow row;
if (IsStaleRole(l, out row))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
if (l.Count > 2)
{
throw new ProviderException("User name appears twice in the same role!");
}
if (l.Count == 1)
{
Debug.Assert(string.IsNullOrEmpty(l.ElementAt(0).UserName));
return(false);
}
return(true);
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// application name + session id is partitionKey
public SessionRow(string sessionId, string applicationName)
: base(SecUtility.CombineToKey(applicationName, sessionId), string.Empty)
{
SecUtility.CheckParameter(ref sessionId, true, true, true, ProviderConfiguration.MaxStringPropertySizeInChars, "sessionId");
SecUtility.CheckParameter(ref applicationName, true, true, true, Constants.MaxTableApplicationNameLength, "applicationName");
Id = sessionId;
ApplicationName = applicationName;
ExpiresUtc = ProviderConfiguration.MinSupportedDateTime;
LockDateUtc = ProviderConfiguration.MinSupportedDateTime;
CreatedUtc = ProviderConfiguration.MinSupportedDateTime;
Timeout = 0;
BlobName = string.Empty;
}
// partition key is applicationName + userName
// rowKey is empty
public MembershipRow(string applicationName, string userName)
: base(SecUtility.CombineToKey(applicationName, userName), string.Empty)
{
if (string.IsNullOrEmpty(applicationName))
{
throw new ProviderException("Partition key cannot be empty!");
}
////if (string.IsNullOrEmpty(userName))
////{
//// throw new ProviderException("RowKey cannot be empty!");
////}
// applicationName + userName is partitionKey
// the reasoning behind this is that we want to strive for the best scalability possible
// chosing applicationName as the partition key and userName as row key would not give us that because
// it would mean that a site with millions of users had all users on a single partition
// having the applicationName and userName inside the partition key is important for queries as queries
// for users in a single application are the most frequent
// these queries are faster because application name and user name are part of the key
////PartitionKey = SecUtility.CombineToKey(applicationName, userName);
////RowKey = string.Empty;
ApplicationName = applicationName;
UserName = userName;
Password = string.Empty;
PasswordSalt = string.Empty;
Email = string.Empty;
PasswordAnswer = string.Empty;
PasswordQuestion = string.Empty;
Comment = string.Empty;
ProfileBlobName = string.Empty;
CreateDateUtc = ProviderConfiguration.MinSupportedDateTime;
LastLoginDateUtc = ProviderConfiguration.MinSupportedDateTime;
LastActivityDateUtc = ProviderConfiguration.MinSupportedDateTime;
LastLockoutDateUtc = ProviderConfiguration.MinSupportedDateTime;
LastPasswordChangedDateUtc = ProviderConfiguration.MinSupportedDateTime;
FailedPasswordAttemptWindowStartUtc = ProviderConfiguration.MinSupportedDateTime;
FailedPasswordAnswerAttemptWindowStartUtc = ProviderConfiguration.MinSupportedDateTime;
ProfileLastUpdatedUtc = ProviderConfiguration.MinSupportedDateTime;
ProfileIsCreatedByProfileProvider = false;
ProfileSize = 0;
}
public override string[] GetRolesForUser(string username)
{
SecUtility.CheckParameter(ref username, true, false, true, Constants.MaxTableUsernameLength, "username");
if (username.Length < 1)
{
return(new string[0]);
}
try
{
TableServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from user in queryObj
where user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) ||
user.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)
select user).AsTableServiceQuery();
IEnumerable <RoleRow> userRows = query.Execute();
if (userRows == null)
{
return(new string[0]);
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
return(new string[0]);
}
List <string> ret = new List <string>();
foreach (RoleRow user in l)
{
if (!string.IsNullOrEmpty(user.UserName) && !IsStaleRole(l, user.RoleName))
{
ret.Add(user.RoleName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override string[] GetAllRoles()
{
try
{
DataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from role in queryObj
where role.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)
select role).AsTableServiceQuery();
IEnumerable <RoleRow> userRows = query.Execute();
if (userRows == null)
{
return(new string[0]);
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
return(new string[0]);
}
List <string> ret = new List <string>();
foreach (RoleRow role in l)
{
Debug.Assert(role.UserName != null);
if (string.IsNullOrEmpty(role.UserName))
{
ret.Add(role.RoleName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// Because of limited transactional support in the table storage offering, this function gives limited guarantees
// for inserting all users into all roles.
// We do not recommend using this function because of missing transactional support.
// the username to match can be in a format that varies between providers
// for this implementation, a syntax similar to the one used in the SQL provider is applied
// "user%" will return all users in a role that start with the string "user"
// the % sign can only appear at the end of the usernameToMatch parameter
// because the current version of the table storage service does not support StartsWith in LINQ queries,
// calling this function can cause significant network trafic when '%' is used in the usernameToMach
// parameter
public override string[] FindUsersInRole(string roleName, string usernameToMatch)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
SecUtility.CheckParameter(ref usernameToMatch, true, true, false, Constants.MaxTableUsernameLength, "usernameToMatch");
bool startswith = false;
if (usernameToMatch.Contains('%'))
{
if (usernameToMatch.IndexOf('%') != usernameToMatch.Length - 1)
{
throw new ArgumentException("The TableStorageRoleProvider only supports search strings that contain '%' as the last character!");
}
usernameToMatch = usernameToMatch.Substring(0, usernameToMatch.Length - 1);
startswith = true;
}
try
{
TableServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
CloudTableQuery <RoleRow> query;
if (startswith && string.IsNullOrEmpty(usernameToMatch))
{
// get all users in the role
query = (from userRole in queryObj
where userRole.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
userRole.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
userRole.RowKey == SecUtility.Escape(roleName)
select userRole).AsTableServiceQuery();
}
else if (startswith)
{
// get all users in the role that start with the specified string (we cannot restrict the query more because StartsWith is not supported)
// we cannot include the username to search for in the key, because the key might e escaped
query = (from userRole in queryObj
where userRole.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
userRole.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
userRole.RowKey == SecUtility.Escape(roleName) &&
(userRole.UserName.CompareTo(usernameToMatch) >= 0 || userRole.UserName == string.Empty)
select userRole).AsTableServiceQuery();
}
else
{
// get a specific user
query = (from userRole in queryObj
where (userRole.PartitionKey == SecUtility.CombineToKey(_applicationName, usernameToMatch) ||
userRole.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)) &&
userRole.RowKey == SecUtility.Escape(roleName)
select userRole).AsTableServiceQuery();
}
IEnumerable <RoleRow> userRows = query.Execute();
if (userRows == null)
{
throw new ProviderException("The role does not exist!");
}
var l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
// the role does not exist
throw new ProviderException("The role does not exist!");
}
RoleRow role;
if (IsStaleRole(l, out role))
{
throw new ProviderException("The role does not exist!");
}
var ret = new List <string>();
foreach (RoleRow row in l)
{
if (row != role)
{
if (startswith && !string.IsNullOrEmpty(usernameToMatch) && !row.UserName.StartsWith(usernameToMatch, StringComparison.Ordinal))
{
continue;
}
ret.Add(row.UserName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}