public static XDoc GetGroupXmlVerbose(GroupBE group, string relation)
{
XDoc groupXml = GetGroupXml(group, relation);
ServiceBE authService = ServiceBL.GetServiceById(group.ServiceId);
if (authService != null)
{
groupXml.Add(ServiceBL.GetServiceXml(authService, "authentication"));
}
groupXml.Start("users");
if (group.UserIdsList != null)
{
groupXml.Attr("count", group.UserIdsList.Length);
}
groupXml.Attr("href", DekiContext.Current.ApiUri.At("groups", group.Id.ToString(), "users"));
groupXml.End();
//Permissions for the group
RoleBE role = PermissionsBL.GetRoleById(group.RoleId);
groupXml.Add(PermissionsBL.GetRoleXml(role, "group"));
return(groupXml);
}
private static void ParseGroupXml(XDoc groupDoc, out uint?id, out string name, out ServiceBE authService, out RoleBE role, out UserBE[] userList)
{
name = groupDoc["groupname"].AsText ?? groupDoc["name"].AsText;
string authserviceidstr = groupDoc["service.authentication/@id"].AsText;
string rolestr = groupDoc["permissions.group/role"].AsText;
authService = null;
role = null;
id = null;
if (!groupDoc["@id"].IsEmpty)
{
uint id_temp;
if (!uint.TryParse(groupDoc["@id"].Contents, out id_temp))
{
throw new GroupIdAttributeInvalidArgumentException();
}
id = id_temp;
}
if (!string.IsNullOrEmpty(authserviceidstr))
{
uint serviceid;
if (!uint.TryParse(authserviceidstr, out serviceid))
{
throw new ServiceAuthIdAttrInvalidArgumentException();
}
authService = ServiceBL.GetServiceById(serviceid);
if (authService == null)
{
throw new ServiceDoesNotExistInvalidArgumentException(serviceid);
}
}
if (!string.IsNullOrEmpty(rolestr))
{
role = PermissionsBL.GetRoleByName(rolestr);
if (role == null)
{
throw new RoleDoesNotExistInvalidArgumentException(rolestr);
}
}
else
{
role = PermissionsBL.RetrieveDefaultRoleForNewAccounts();
}
if (!groupDoc["users"].IsEmpty)
{
userList = ReadUserListXml(groupDoc["users"]);
}
else
{
userList = new UserBE[] { }
};
}
private static UserBE[] ProcessGroupMemberInput(GroupBE group, XDoc userList)
{
if (!userList.HasName("users"))
{
throw new GroupExpectedUserRootNodeInvalidArgumentException();
}
ServiceBE service = ServiceBL.GetServiceById(group.ServiceId);
if (service == null)
{
throw new GroupServiceNotFoundFatalException(group.ServiceId, group.Name);
}
//Changing members of an external group is not supported. You may modify members in the external provider instead.
if (!ServiceBL.IsLocalAuthService(service))
{
throw new ExternalGroupMemberInvalidOperationException();
}
UserBE[] members = ReadUserListXml(userList);
ValidateGroupMemberList(service, members);
return(members);
}
//--- Class Methods ---
public static UserBE Authenticate(DreamContext context, DreamMessage request, uint serviceId, bool autoCreateExternalUser, bool allowAnon, out bool altPassword)
{
UserBE user = null;
altPassword = false;
// Case 1: username/fullname, password, provider (login window)
// 1. Validate & retrieve fullname using credentials
// Failed -> return null
// 2. Populate user object
// A. Populates user info
// B. Populates group info in user object
// 3. Does fullname exist?
// Yes -> Update user (email, fullname, ...)
// No -> Create user
// 4. Update Group information
// 5. return user object
//
// Case 2: fullname, password (http, api, ...)
// 1. Lookup full name, exist?
// Yes -> return user
// No -> return null
//
// Case 3: auth-token (header auth)
// 0. Valid auth token?
// No -> return null
// 1. Lookup user by name
// Found -> return user
// Else -> return null
string userName = null;
string password = null;
UserBE userFromToken = null;
ServiceBE authService = null;
// Extract authtoken and impersonation authtoken from request.
// AllowAnon is false when in GET/POST: users/authenticate or when ?authenticate=true.
// Standard user authtokens are ignored when AllowAnon=false but impersonation tokens are accepted.
bool impersonationOnly = !allowAnon;
userFromToken = UserFromAuthTokenInRequest(context, impersonationOnly);
if (userFromToken == null)
{
HttpUtil.GetAuthentication(context.Uri.ToUri(), request.Headers, out userName, out password);
}
// check if we need to retrieve authentication service information
if (serviceId > 0)
{
authService = ServiceBL.GetServiceById(serviceId);
if (authService == null)
{
throw new AuthServiceIdInvalidArgumentException(serviceId);
}
if (authService.Type != ServiceType.AUTH)
{
throw new AuthNotAnAuthServiceInvalidArgumentException(serviceId);
}
}
// check if a username was provided
if (!string.IsNullOrEmpty(userName))
{
//Case 2: Given username + password
if (authService == null)
{
//Assuming local user or existing external account
user = DbUtils.CurrentSession.Users_GetByName(userName);
if (user != null)
{
serviceId = user.ServiceId;
authService = ServiceBL.GetServiceById(serviceId);
}
else
{
LoginAccessDenied(context, request, userName, null, password);
}
}
if (authService == null)
{
throw new AuthServiceIdInvalidArgumentException(serviceId);
}
if (authService.Type != ServiceType.AUTH)
{
throw new AuthNotAnAuthServiceInvalidArgumentException(serviceId);
}
if (user == null)
{
//Performing auth on local account
if (ServiceBL.IsLocalAuthService(authService))
{
user = DbUtils.CurrentSession.Users_GetByName(userName);
}
else
{
//Performing external auth. Lookup by external user name
user = DbUtils.CurrentSession.Users_GetByExternalName(userName, authService.Id);
}
if (user != null && user.ServiceId != authService.Id)
{
ServiceBE currentUsersAuthService = ServiceBL.GetServiceById(user.ServiceId);
if (currentUsersAuthService != null)
{
throw new AuthLoginExternalUserConflictException(currentUsersAuthService.Description);
}
throw new LoginExternalUserUnknownConflictException();
}
}
//Local account in the db.
if (user != null && ServiceBL.IsLocalAuthService(authService))
{
//Validate password for local account or validate the apikey
if (!IsValidAuthenticationForLocalUser(user, password, out altPassword))
{
// try impersonation using the ApiKey
if (string.IsNullOrEmpty(password) && PermissionsBL.ValidateRequestApiKey())
{
DekiContext.Current.Instance.Log.InfoFormat("user '{0}' authenticated via apikey impersonation", userName);
}
else
{
LoginAccessDenied(context, request, userName, user.ID, password);
}
}
}
// User was not found in the db and not being asked to create it.
if (user == null && !autoCreateExternalUser)
{
LoginAccessDenied(context, request, userName, null, password);
}
// Creating local account if apikey checks out and our authservice is local
if (user == null && string.IsNullOrEmpty(password) && PermissionsBL.ValidateRequestApiKey() && ServiceBL.IsLocalAuthService(authService))
{
XDoc newUserDoc = new XDoc("user")
.Elem("username", userName);
DreamMessage newUserResponse = DekiContext.Current.ApiPlug.At("users")
.With("apikey", DreamContext.Current.GetParam("apikey", string.Empty))
.Post(newUserDoc);
user = UserBL.GetUserById(newUserResponse.ToDocument()["/user/@id"].AsUInt ?? 0);
if (user != null && !string.IsNullOrEmpty(password))
{
user = UserBL.SetPassword(user, password, false);
}
}
// Got an external account
// Passing in the user object from db if it was found.
List <GroupBE> externalGroups = null;
if (!ServiceBL.IsLocalAuthService(authService))
{
bool bypassAuthentication = false;
string externalName;
if (user == null || string.IsNullOrEmpty(user.ExternalName))
{
externalName = userName;
}
else
{
externalName = user.ExternalName;
}
// If apikey is valid, try to bypass auth with the external provider
// and only lookup user/group details.
if (string.IsNullOrEmpty(password) && PermissionsBL.ValidateRequestApiKey())
{
DekiContext.Current.Instance.Log.InfoFormat("user '{0}' authenticating being bypassed via apikey impersonation", userName);
bypassAuthentication = true;
}
user = ExternalServiceSA.BuildUserFromAuthService(authService, user, userName, bypassAuthentication, externalName, password, out externalGroups);
}
// User was not found or did not authenticate with external provider
if (user == null)
{
LoginAccessDenied(context, request, userName, null, password);
}
else
{
//New user creation from external provider
if (user.ID == 0)
{
if (!autoCreateExternalUser)
{
LoginAccessDenied(context, request, userName, null, password);
}
}
else
{
//user exists
// TODO (steveb): ???
}
if (user.UserActive)
{
user = UserBL.CreateOrUpdateUser(user);
if (externalGroups != null)
{
UserBL.UpdateUsersGroups(user, externalGroups.ToArray());
}
}
}
}
else if (userFromToken != null)
{
// valid token exists that resolved to a user
user = userFromToken;
}
else if (allowAnon)
{
// Anonymous user
user = DbUtils.CurrentSession.Users_GetByName(DekiWikiService.ANON_USERNAME);
}
if (user == null)
{
//No credentials. Or token not provided or is invalid.
LoginAccessDenied(context, request, null, null, password);
}
else if (!user.UserActive && !PermissionsBL.ValidateRequestApiKey())
{
//If a valid api key is provided, override the disabled account flag
throw new AuthUserDisabledForbiddenException(user.Name);
}
return(user);
}
public static XDoc GetUserXmlVerbose(UserBE user, string relationAttr, bool showPrivateInfo, bool showGroups, bool showProperties)
{
XDoc userXml = GetUserXml(user, relationAttr, showPrivateInfo);
userXml.Elem("date.created", user.CreateTimestamp);
if (!IsAnonymous(user))
{
PageBE homePage = GetHomePage(user);
if (homePage != null && homePage.ID != 0)
{
userXml.Add(PageBL.GetPageXml(homePage, "home"));
}
}
userXml.Start("status").Value(user.UserActive ? "active" : "inactive").End();
userXml.Start("date.lastlogin").Value(user.Touched).End();
userXml.Start("language").Value(user.Language).End();
userXml.Start("timezone").Value(user.Timezone).End();
ServiceBE authService = ServiceBL.GetServiceById(user.ServiceId);
if (authService != null)
{
userXml.Add(ServiceBL.GetServiceXml(authService, "authentication"));
}
//Permissions for the user from user role
userXml.Add(PermissionsBL.GetRoleXml(PermissionsBL.GetRoleById(user.RoleId), "user"));
ulong effectivePermissions = PermissionsBL.CalculateEffectiveUserRights(user);
//Effective permissions for the user from the role + group roles.
userXml.Add(PermissionsBL.GetPermissionXml(effectivePermissions, "effective"));
// Set of permissions revoked from the user
userXml.Add(PermissionsBL.GetPermissionsRevokedXml(user));
// check if groups should be included
if (showGroups)
{
userXml.Start("groups");
IList <GroupBE> groups = DbUtils.CurrentSession.Groups_GetByUser(user.ID);
if (null != groups)
{
foreach (GroupBE g in groups)
{
userXml.Add(GroupBL.GetGroupXmlVerbose(g, null));
}
}
userXml.End();
}
// retrieve properties for current user while providing an href for other users.
if (showProperties && (DekiContext.Current != null && DekiContext.Current.User != null && DekiContext.Current.User.ID == user.ID))
{
IList <ResourceBE> props = PropertyBL.Instance.GetUserProperties(user.ID);
userXml = PropertyBL.Instance.GetPropertyXml(props, GetUri(user), null, null, userXml);
}
else
{
userXml.Start("properties").Attr("href", GetUri(user).At("properties")).End();
}
// TODO Max: get <subscriptions> (watchlist) not implemented
return(userXml);
}
private static void ParseUserXml(XDoc userDoc, out uint?id, out string username, out string email, out string fullname, out ServiceBE authService, out RoleBE role, out bool?active, out string language, out string timezone)
{
username = userDoc["username"].AsText;
email = userDoc["email"].AsText;
fullname = userDoc["fullname"].AsText;
language = userDoc["language"].AsText;
timezone = userDoc["timezone"].AsText;
string authserviceidstr = userDoc["service.authentication/@id"].AsText;
string rolestr = userDoc["permissions.user/role"].AsText;
string statusStr = userDoc["status"].AsText;
authService = null;
role = null;
id = null;
if (!userDoc["@id"].IsEmpty)
{
uint id_temp;
if (!uint.TryParse(userDoc["@id"].Contents, out id_temp))
{
throw new UserIdAttrInvalidArgumentException();
}
id = id_temp;
}
if (!string.IsNullOrEmpty(authserviceidstr))
{
uint serviceid;
if (!uint.TryParse(authserviceidstr, out serviceid))
{
throw new ServiceAuthIdAttrInvalidArgumentException();
}
authService = ServiceBL.GetServiceById(serviceid);
if (authService == null)
{
throw new ServiceDoesNotExistInvalidArgumentException(serviceid);
}
}
if (!string.IsNullOrEmpty(rolestr))
{
role = PermissionsBL.GetRoleByName(rolestr);
if (role == null)
{
throw new RoleDoesNotExistInvalidArgumentException(rolestr);
}
}
if (!string.IsNullOrEmpty(statusStr))
{
switch (statusStr.ToLowerInvariant())
{
case "active":
active = true;
break;
case "inactive":
active = false;
break;
default:
throw new UserStatusAttrInvalidArgumentException();
}
}
else
{
active = null;
}
if (!string.IsNullOrEmpty(timezone))
{
if (!timeZoneRegex.Match(timezone).Success)
{
throw new UserTimezoneInvalidArgumentException();
}
}
if (!string.IsNullOrEmpty(language))
{
string[] validLanguages = DekiContext.Current.Instance.Languages.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
string tempLanguage = language;
if (!Array.Exists(validLanguages, delegate(string temp) { return(temp.EqualsInvariantIgnoreCase(tempLanguage)); }))
{
throw new UserInvalidLanguageException();
}
}
}
