Merge branch 'master' into careminster

avinationmerge
Melanie 2012-01-12 17:52:29 +00:00
commit 4492bc1bcd
16 changed files with 114 additions and 88 deletions

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@ -44,13 +44,13 @@ namespace OpenSim.Framework.Serialization.External
/// with creator data added to it. /// with creator data added to it.
/// </summary> /// </summary>
/// <param name="xml">The SceneObjectPart represented in XML2</param> /// <param name="xml">The SceneObjectPart represented in XML2</param>
/// <param name="profileURL">The URL of the profile service for the creator</param> /// <param name="homeURL">The URL of the user agents service (home) for the creator</param>
/// <param name="userService">The service for retrieving user account information</param> /// <param name="userService">The service for retrieving user account information</param>
/// <param name="scopeID">The scope of the user account information (Grid ID)</param> /// <param name="scopeID">The scope of the user account information (Grid ID)</param>
/// <returns>The SceneObjectPart represented in XML2</returns> /// <returns>The SceneObjectPart represented in XML2</returns>
public static string RewriteSOP(string xml, string profileURL, IUserAccountService userService, UUID scopeID) public static string RewriteSOP(string xml, string homeURL, IUserAccountService userService, UUID scopeID)
{ {
if (xml == string.Empty || profileURL == string.Empty || userService == null) if (xml == string.Empty || homeURL == string.Empty || userService == null)
return xml; return xml;
XmlDocument doc = new XmlDocument(); XmlDocument doc = new XmlDocument();
@ -83,7 +83,7 @@ namespace OpenSim.Framework.Serialization.External
if (!hasCreatorData && creator != null) if (!hasCreatorData && creator != null)
{ {
XmlElement creatorData = doc.CreateElement("CreatorData"); XmlElement creatorData = doc.CreateElement("CreatorData");
creatorData.InnerText = profileURL + "/" + creator.PrincipalID + ";" + creator.FirstName + " " + creator.LastName; creatorData.InnerText = homeURL + ";" + creator.FirstName + " " + creator.LastName;
sop.AppendChild(creatorData); sop.AppendChild(creatorData);
} }
} }

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@ -493,7 +493,10 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
} }
else else
{ {
sceneObjects.Add(SceneObjectSerializer.FromOriginalXmlFormat(xmlData)); SceneObjectGroup deserializedObject = SceneObjectSerializer.FromOriginalXmlFormat(xmlData);
if (deserializedObject != null)
sceneObjects.Add(deserializedObject);
} }
foreach (SceneObjectGroup sog in sceneObjects) foreach (SceneObjectGroup sog in sceneObjects)

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@ -55,16 +55,16 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
// private Dictionary<string, InventoryClient> m_inventoryServers = new Dictionary<string, InventoryClient>(); // private Dictionary<string, InventoryClient> m_inventoryServers = new Dictionary<string, InventoryClient>();
private Scene m_scene; private Scene m_scene;
private string m_ProfileServerURI; private string m_HomeURI;
#endregion #endregion
#region Constructor #region Constructor
public HGAssetMapper(Scene scene, string profileURL) public HGAssetMapper(Scene scene, string homeURL)
{ {
m_scene = scene; m_scene = scene;
m_ProfileServerURI = profileURL; m_HomeURI = homeURL;
} }
#endregion #endregion
@ -150,7 +150,7 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
UUID.TryParse(meta.CreatorID, out uuid); UUID.TryParse(meta.CreatorID, out uuid);
UserAccount creator = m_scene.UserAccountService.GetUserAccount(m_scene.RegionInfo.ScopeID, uuid); UserAccount creator = m_scene.UserAccountService.GetUserAccount(m_scene.RegionInfo.ScopeID, uuid);
if (creator != null) if (creator != null)
meta.CreatorID = m_ProfileServerURI + "/" + meta.CreatorID + ";" + creator.FirstName + " " + creator.LastName; meta.CreatorID = m_HomeURI + ";" + creator.FirstName + " " + creator.LastName;
} }
} }
@ -193,7 +193,7 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
if (!hasCreatorData && creator != null) if (!hasCreatorData && creator != null)
{ {
XmlElement creatorData = doc.CreateElement("CreatorData"); XmlElement creatorData = doc.CreateElement("CreatorData");
creatorData.InnerText = m_ProfileServerURI + "/" + creator.PrincipalID + ";" + creator.FirstName + " " + creator.LastName; creatorData.InnerText = m_HomeURI + ";" + creator.FirstName + " " + creator.LastName;
sop.AppendChild(creatorData); sop.AppendChild(creatorData);
} }
} }

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@ -54,7 +54,7 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
get { return m_assMapper; } get { return m_assMapper; }
} }
private string m_ProfileServerURI; private string m_HomeURI;
private bool m_OutboundPermission; private bool m_OutboundPermission;
private string m_ThisGatekeeper; private string m_ThisGatekeeper;
@ -84,7 +84,10 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
IConfig thisModuleConfig = source.Configs["HGInventoryAccessModule"]; IConfig thisModuleConfig = source.Configs["HGInventoryAccessModule"];
if (thisModuleConfig != null) if (thisModuleConfig != null)
{ {
m_ProfileServerURI = thisModuleConfig.GetString("ProfileServerURI", string.Empty); // legacy configuration [obsolete]
m_HomeURI = thisModuleConfig.GetString("ProfileServerURI", string.Empty);
// preferred
m_HomeURI = thisModuleConfig.GetString("HomeURI", m_HomeURI);
m_OutboundPermission = thisModuleConfig.GetBoolean("OutboundPermission", true); m_OutboundPermission = thisModuleConfig.GetBoolean("OutboundPermission", true);
m_ThisGatekeeper = thisModuleConfig.GetString("Gatekeeper", string.Empty); m_ThisGatekeeper = thisModuleConfig.GetString("Gatekeeper", string.Empty);
} }
@ -100,7 +103,7 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
return; return;
base.AddRegion(scene); base.AddRegion(scene);
m_assMapper = new HGAssetMapper(scene, m_ProfileServerURI); m_assMapper = new HGAssetMapper(scene, m_HomeURI);
scene.EventManager.OnNewInventoryItemUploadComplete += UploadInventoryItem; scene.EventManager.OnNewInventoryItemUploadComplete += UploadInventoryItem;
} }

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@ -423,58 +423,62 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
AddUser(uuid, profileURL + ";" + first + " " + last); AddUser(uuid, profileURL + ";" + first + " " + last);
} }
public void AddUser(UUID id, string creatorData) public void AddUser (UUID id, string creatorData)
{ {
lock (m_UserCache) UserData oldUser;
{ //lock the whole block - prevent concurrent update
if (m_UserCache.ContainsKey(id)) lock (m_UserCache) {
return; m_UserCache.TryGetValue (id, out oldUser);
} if (oldUser != null) {
if (creatorData == null || creatorData == String.Empty) {
// m_log.DebugFormat("[USER MANAGEMENT MODULE]: Adding user with id {0}, craetorData {1}", id, creatorData); //ignore updates without creator data
return;
UserAccount account = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, id); }
//try update unknown users
if (account != null) //and creator's home URL's
{ if ((oldUser.FirstName == "Unknown" && !creatorData.Contains ("Unknown")) || (oldUser.HomeURL != null && !creatorData.StartsWith (oldUser.HomeURL))) {
AddUser(id, account.FirstName, account.LastName); m_UserCache.Remove (id);
} // m_log.DebugFormat("[USER MANAGEMENT MODULE]: Re-adding user with id {0}, creatorData [{1}] and old HomeURL {2}", id, creatorData,oldUser.HomeURL);
else } else {
{ //we have already a valid user within the cache
UserData user = new UserData(); return;
user.Id = id;
user.Flags = -1;
user.Created = -1;
if (creatorData != null && creatorData != string.Empty)
{
//creatorData = <endpoint>;<name>
string[] parts = creatorData.Split(';');
if (parts.Length >= 1)
{
user.HomeURL = parts[0];
try
{
Uri uri = new Uri(parts[0]);
user.LastName = "@" + uri.Authority;
}
catch (UriFormatException)
{
m_log.DebugFormat("[SCENE]: Unable to parse Uri {0}", parts[0]);
user.LastName = "@unknown";
}
} }
if (parts.Length >= 2)
user.FirstName = parts[1].Replace(' ', '.');
} }
else // m_log.DebugFormat("[USER MANAGEMENT MODULE]: Adding user with id {0}, creatorData {1}", id, creatorData);
{
user.FirstName = "Unknown"; UserAccount account = m_Scenes[0].UserAccountService.GetUserAccount (m_Scenes[0].RegionInfo.ScopeID, id);
user.LastName = "User";
if (account != null) {
AddUser (id, account.FirstName, account.LastName);
} else {
UserData user = new UserData ();
user.Id = id;
user.Flags = -1;
user.Created = -1;
if (creatorData != null && creatorData != string.Empty) {
//creatorData = <endpoint>;<name>
string[] parts = creatorData.Split (';');
if (parts.Length >= 1) {
user.HomeURL = parts[0];
try {
Uri uri = new Uri (parts[0]);
user.LastName = "@" + uri.Authority;
} catch (UriFormatException) {
m_log.DebugFormat ("[SCENE]: Unable to parse Uri {0}", parts[0]);
user.LastName = "@unknown";
}
}
if (parts.Length >= 2)
user.FirstName = parts[1].Replace (' ', '.');
} else {
user.FirstName = "Unknown";
user.LastName = "User";
}
AddUserInternal (user);
} }
AddUserInternal(user);
} }
} }

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@ -422,6 +422,12 @@ namespace OpenSim.Region.CoreModules.World.Archiver
string extension = filename.Substring(i); string extension = filename.Substring(i);
string uuid = filename.Remove(filename.Length - extension.Length); string uuid = filename.Remove(filename.Length - extension.Length);
if (m_scene.AssetService.GetMetadata(uuid) != null)
{
// m_log.DebugFormat("[ARCHIVER]: found existing asset {0}",uuid);
return true;
}
if (ArchiveConstants.EXTENSION_TO_ASSET_TYPE.ContainsKey(extension)) if (ArchiveConstants.EXTENSION_TO_ASSET_TYPE.ContainsKey(extension))
{ {
sbyte assetType = ArchiveConstants.EXTENSION_TO_ASSET_TYPE[extension]; sbyte assetType = ArchiveConstants.EXTENSION_TO_ASSET_TYPE[extension];

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@ -125,8 +125,12 @@ namespace OpenSim.Region.CoreModules.World.Archiver
Dictionary<string, object> options = new Dictionary<string, object>(); Dictionary<string, object> options = new Dictionary<string, object>();
OptionSet ops = new OptionSet(); OptionSet ops = new OptionSet();
// ops.Add("v|version=", delegate(string v) { options["version"] = v; });
ops.Add("p|profile=", delegate(string v) { options["profile"] = v; }); // legacy argument [obsolete]
ops.Add("p|profile=", delegate(string v) { Console.WriteLine("\n WARNING: -profile option is obsolete and it will not work. Use -home instead.\n"); });
// preferred
ops.Add("h|home=", delegate(string v) { options["home"] = v; });
ops.Add("noassets", delegate(string v) { options["noassets"] = v != null; }); ops.Add("noassets", delegate(string v) { options["noassets"] = v != null; });
ops.Add("perm=", delegate(string v) { options["checkPermissions"] = v; }); ops.Add("perm=", delegate(string v) { options["checkPermissions"] = v; });

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@ -405,7 +405,7 @@ namespace OpenSim.Region.Framework.Scenes
private string m_creatorData = string.Empty; private string m_creatorData = string.Empty;
/// <summary> /// <summary>
/// Data about the creator in the form profile_url;name /// Data about the creator in the form home_url;name
/// </summary> /// </summary>
public string CreatorData public string CreatorData
{ {
@ -416,7 +416,7 @@ namespace OpenSim.Region.Framework.Scenes
/// <summary> /// <summary>
/// Used by the DB layer to retrieve / store the entire user identification. /// Used by the DB layer to retrieve / store the entire user identification.
/// The identification can either be a simple UUID or a string of the form /// The identification can either be a simple UUID or a string of the form
/// uuid[;profile_url[;name]] /// uuid[;home_url[;name]]
/// </summary> /// </summary>
public string CreatorIdentification public string CreatorIdentification
{ {

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@ -54,7 +54,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
/// Deserialize a scene object from the original xml format /// Deserialize a scene object from the original xml format
/// </summary> /// </summary>
/// <param name="xmlData"></param> /// <param name="xmlData"></param>
/// <returns></returns> /// <returns>The scene object deserialized. Null on failure.</returns>
public static SceneObjectGroup FromOriginalXmlFormat(string xmlData) public static SceneObjectGroup FromOriginalXmlFormat(string xmlData)
{ {
//m_log.DebugFormat("[SOG]: Starting deserialization of SOG"); //m_log.DebugFormat("[SOG]: Starting deserialization of SOG");
@ -1147,12 +1147,12 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
if (sop.CreatorData != null && sop.CreatorData != string.Empty) if (sop.CreatorData != null && sop.CreatorData != string.Empty)
writer.WriteElementString("CreatorData", sop.CreatorData); writer.WriteElementString("CreatorData", sop.CreatorData);
else if (options.ContainsKey("profile")) else if (options.ContainsKey("home"))
{ {
if (m_UserManagement == null) if (m_UserManagement == null)
m_UserManagement = sop.ParentGroup.Scene.RequestModuleInterface<IUserManagement>(); m_UserManagement = sop.ParentGroup.Scene.RequestModuleInterface<IUserManagement>();
string name = m_UserManagement.GetUserName(sop.CreatorID); string name = m_UserManagement.GetUserName(sop.CreatorID);
writer.WriteElementString("CreatorData", (string)options["profile"] + "/" + sop.CreatorID + ";" + name); writer.WriteElementString("CreatorData", (string)options["home"] + ";" + name);
} }
WriteUUID(writer, "FolderID", sop.FolderID, options); WriteUUID(writer, "FolderID", sop.FolderID, options);
@ -1298,12 +1298,12 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
if (item.CreatorData != null && item.CreatorData != string.Empty) if (item.CreatorData != null && item.CreatorData != string.Empty)
writer.WriteElementString("CreatorData", item.CreatorData); writer.WriteElementString("CreatorData", item.CreatorData);
else if (options.ContainsKey("profile")) else if (options.ContainsKey("home"))
{ {
if (m_UserManagement == null) if (m_UserManagement == null)
m_UserManagement = scene.RequestModuleInterface<IUserManagement>(); m_UserManagement = scene.RequestModuleInterface<IUserManagement>();
string name = m_UserManagement.GetUserName(item.CreatorID); string name = m_UserManagement.GetUserName(item.CreatorID);
writer.WriteElementString("CreatorData", (string)options["profile"] + "/" + item.CreatorID + ";" + name); writer.WriteElementString("CreatorData", (string)options["home"] + ";" + name);
} }
writer.WriteElementString("Description", item.Description); writer.WriteElementString("Description", item.Description);

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@ -289,7 +289,7 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
if (images.Length > 0) if (images.Length > 0)
{ {
report.AppendFormat( report.AppendFormat(
"{0,-36} {1,-8} {2,-9} {3,-9} {4,-9} {5,-7}\n", "{0,-36} {1,-8} {2,-10} {3,-9} {4,-9} {5,-7}\n",
"Texture ID", "Texture ID",
"Last Seq", "Last Seq",
"Priority", "Priority",
@ -299,7 +299,7 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
foreach (J2KImage image in images) foreach (J2KImage image in images)
report.AppendFormat( report.AppendFormat(
"{0,36} {1,8} {2,9} {3,10} {4,9} {5,7}\n", "{0,36} {1,8} {2,10} {3,10} {4,9} {5,7}\n",
image.TextureID, image.LastSequence, image.Priority, image.StartPacket, image.HasAsset, image.IsDecoded); image.TextureID, image.LastSequence, image.Priority, image.StartPacket, image.HasAsset, image.IsDecoded);
} }
} }

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@ -53,7 +53,7 @@ namespace OpenSim.Services.HypergridService
LogManager.GetLogger( LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType); MethodBase.GetCurrentMethod().DeclaringType);
private string m_ProfileServiceURL; private string m_HomeURL;
private IUserAccountService m_UserAccountService; private IUserAccountService m_UserAccountService;
private UserAccountCache m_Cache; private UserAccountCache m_Cache;
@ -74,7 +74,10 @@ namespace OpenSim.Services.HypergridService
if (m_UserAccountService == null) if (m_UserAccountService == null)
throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll)); throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll));
m_ProfileServiceURL = assetConfig.GetString("ProfileServerURI", string.Empty); // legacy configuration [obsolete]
m_HomeURL = assetConfig.GetString("ProfileServerURI", string.Empty);
// Preferred
m_HomeURL = assetConfig.GetString("HomeURI", m_HomeURL);
m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService); m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService);
} }
@ -134,13 +137,13 @@ namespace OpenSim.Services.HypergridService
UserAccount creator = m_Cache.GetUser(meta.CreatorID); UserAccount creator = m_Cache.GetUser(meta.CreatorID);
if (creator != null) if (creator != null)
meta.CreatorID = m_ProfileServiceURL + "/" + meta.CreatorID + ";" + creator.FirstName + " " + creator.LastName; meta.CreatorID = meta.CreatorID + ";" + m_HomeURL + "/" + creator.FirstName + " " + creator.LastName;
} }
protected byte[] AdjustIdentifiers(byte[] data) protected byte[] AdjustIdentifiers(byte[] data)
{ {
string xml = Utils.BytesToString(data); string xml = Utils.BytesToString(data);
return Utils.StringToBytes(ExternalRepresentationUtils.RewriteSOP(xml, m_ProfileServiceURL, m_Cache, UUID.Zero)); return Utils.StringToBytes(ExternalRepresentationUtils.RewriteSOP(xml, m_HomeURL, m_Cache, UUID.Zero));
} }
} }

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@ -55,7 +55,7 @@ namespace OpenSim.Services.HypergridService
protected new IXInventoryData m_Database; protected new IXInventoryData m_Database;
private string m_ProfileServiceURL; private string m_HomeURL;
private IUserAccountService m_UserAccountService; private IUserAccountService m_UserAccountService;
private UserAccountCache m_Cache; private UserAccountCache m_Cache;
@ -100,7 +100,10 @@ namespace OpenSim.Services.HypergridService
if (m_UserAccountService == null) if (m_UserAccountService == null)
throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll)); throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll));
m_ProfileServiceURL = invConfig.GetString("ProfileServerURI", string.Empty); // legacy configuration [obsolete]
m_HomeURL = invConfig.GetString("ProfileServerURI", string.Empty);
// Preferred
m_HomeURL = invConfig.GetString("HomeURI", m_HomeURL);
m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService); m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService);
} }
@ -321,7 +324,7 @@ namespace OpenSim.Services.HypergridService
// Adjust the creator data // Adjust the creator data
if (user != null && it != null && (it.CreatorData == null || it.CreatorData == string.Empty)) if (user != null && it != null && (it.CreatorData == null || it.CreatorData == string.Empty))
it.CreatorData = m_ProfileServiceURL + "/" + it.CreatorId + ";" + user.FirstName + " " + user.LastName; it.CreatorData = m_HomeURL + ";" + user.FirstName + " " + user.LastName;
return it; return it;
} }

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@ -171,9 +171,9 @@
; physics = basicphysics ; physics = basicphysics
; physics = POS ; physics = POS
;# {permissionmodules} {} {Permission modules to use (may specify multiple modules, separated by space} {} DefaultPermissionsModule ;# {permissionmodules} {} {Permission modules to use (may specify multiple modules, separated by comma} {} DefaultPermissionsModule
;; Permission modules to use, separated by space. ;; Permission modules to use, separated by comma.
; permissionmodules = "DefaultPermissionsModule" ; permissionmodules = DefaultPermissionsModule
;# {serverside_object_permissions} {permissionmodules:DefaultPermissionsModule} {Activate permission handling by the sim?} {true false} true ;# {serverside_object_permissions} {permissionmodules:DefaultPermissionsModule} {Activate permission handling by the sim?} {true false} true
;; These are the parameters for the default permissions module ;; These are the parameters for the default permissions module

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@ -380,7 +380,7 @@ ServiceConnectors = "8003/OpenSim.Server.Handlers.dll:AssetServiceConnector,8003
; For the InventoryServiceInConnector ; For the InventoryServiceInConnector
LocalServiceModule = "OpenSim.Services.HypergridService.dll:HGInventoryService" LocalServiceModule = "OpenSim.Services.HypergridService.dll:HGInventoryService"
UserAccountsService = "OpenSim.Services.UserAccountService.dll:UserAccountService" UserAccountsService = "OpenSim.Services.UserAccountService.dll:UserAccountService"
ProfileServerURI = "http://127.0.0.1:8002/user" HomeURI = "http://127.0.0.1:8002"
; * The interface that local users get when they are in other grids. ; * The interface that local users get when they are in other grids.
; * This restricts the access that the rest of the world has to ; * This restricts the access that the rest of the world has to
@ -389,7 +389,7 @@ ServiceConnectors = "8003/OpenSim.Server.Handlers.dll:AssetServiceConnector,8003
[HGAssetService] [HGAssetService]
LocalServiceModule = "OpenSim.Services.HypergridService.dll:HGAssetService" LocalServiceModule = "OpenSim.Services.HypergridService.dll:HGAssetService"
UserAccountsService = "OpenSim.Services.UserAccountService.dll:UserAccountService" UserAccountsService = "OpenSim.Services.UserAccountService.dll:UserAccountService"
ProfileServerURI = "http://127.0.0.1:8002/user" HomeURI = "http://127.0.0.1:8002"
[HGFriendsService] [HGFriendsService]
LocalServiceModule = "OpenSim.Services.FriendsService.dll:FriendsService" LocalServiceModule = "OpenSim.Services.FriendsService.dll:FriendsService"

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@ -123,7 +123,7 @@
; Change this to your server ; Change this to your server
; accessible from other grids ; accessible from other grids
; ;
ProfileServerURI = "http://mygridserver.com:8002/user" HomeURI = "http://mygridserver.com:8002/user"
Gatekeeper = "http://mygridserver.com:8002" Gatekeeper = "http://mygridserver.com:8002"
;; If you want to protect your assets from being copied by foreign visitors ;; If you want to protect your assets from being copied by foreign visitors
;; uncomment the next line. You may want to do this on sims that have licensed content. ;; uncomment the next line. You may want to do this on sims that have licensed content.

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@ -48,13 +48,13 @@
AssetLoaderArgs = "assets/AssetSets.xml" AssetLoaderArgs = "assets/AssetSets.xml"
[HGInventoryService] [HGInventoryService]
ProfileServerURI = "http://127.0.0.1:9000/profiles" HomeURI = "http://127.0.0.1:9000"
[HGAssetService] [HGAssetService]
ProfileServerURI = "http://127.0.0.1:9000/profiles" HomeURI = "http://127.0.0.1:9000"
[HGInventoryAccessModule] [HGInventoryAccessModule]
ProfileServerURI = "http://127.0.0.1:9000/profiles" HomeURI = "http://127.0.0.1:9000"
Gatekeeper = "http://127.0.0.1:9000" Gatekeeper = "http://127.0.0.1:9000"
;; If you want to protect your assets from being copied by foreign visitors ;; If you want to protect your assets from being copied by foreign visitors