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This commit is contained in:
olcxja 2026-08-10 02:17:27 +02:00
commit 4267e0d864
6 changed files with 373 additions and 132 deletions
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6
LarpixServer/Account/Requests.cs
View file

@ -827,11 +827,11 @@ public static async Task Auth(HttpContext context, Func<Task> next, IQueryCollec
}
case "group/invite":
{
Universal2String payload = JsonSerializer.Deserialize(
Universal3String payload = JsonSerializer.Deserialize(
serializedBody.string2,
AppJsonSerializerContext.Default.Universal2String
AppJsonSerializerContext.Default.Universal3String
);
await context.Response.WriteAsync(Encryption.Encryption.EncryptString(await Room.Groups.GroupInvite(id, payload.string1, payload.string2), password));
await context.Response.WriteAsync(Encryption.Encryption.EncryptString(await Room.Groups.GroupInvite(id, payload.string1, payload.string2, payload.string3), password));
break;
}
case "group/invite/revoke":

63
LarpixServer/Account/Utils.cs
View file

@ -256,7 +256,23 @@ public class Utils
string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{path}/{invite}"));
if (!first) groupBuilder.Append(',');
first = false;
groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {content}, \"receiver\": \"{userId}\", \"groupId\": \"{groupId}\" }}");
string timestampStr;
string keysPayload = "";
if (content.StartsWith("{"))
{
var data = JsonSerializer.Deserialize<LarpixServer.Utils.Jsons.Universal2String>(content, LarpixServer.Utils.Jsons.AppJsonSerializerContext.Default.Universal2String);
timestampStr = data.string1;
if (!string.IsNullOrEmpty(data.string2)) {
keysPayload = $", \"keysPayload\": {JsonSerializer.Serialize(data.string2, LarpixServer.Utils.Jsons.AppJsonSerializerContext.Default.String)}";
}
}
else
{
timestampStr = content;
}
groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {timestampStr}, \"receiver\": \"{userId}\", \"groupId\": \"{groupId}\"{keysPayload} }}");
}
}
groupBuilder.Append("}");
@ -297,7 +313,23 @@ public class Utils
string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{path}/{invite}"));
if (!first) groupBuilder.Append(',');
first = false;
groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {content}, \"sender\": \"{userId}\", \"groupId\": \"{groupId}\" }}");
string timestampStr;
string keysPayload = "";
if (content.StartsWith("{"))
{
var data = JsonSerializer.Deserialize<LarpixServer.Utils.Jsons.Universal2String>(content, LarpixServer.Utils.Jsons.AppJsonSerializerContext.Default.Universal2String);
timestampStr = data.string1;
if (!string.IsNullOrEmpty(data.string2)) {
keysPayload = $", \"keysPayload\": {JsonSerializer.Serialize(data.string2, LarpixServer.Utils.Jsons.AppJsonSerializerContext.Default.String)}";
}
}
else
{
timestampStr = content;
}
groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {timestampStr}, \"sender\": \"{userId}\", \"groupId\": \"{groupId}\"{keysPayload} }}");
}
}
groupBuilder.Append("}");
@ -347,6 +379,10 @@ public class Utils
string dirPath = $"{ACCOUNTS_DATA_DIR}/{id}/storage/public";
string path = $"{dirPath}/{entry}";
SemaphoreSlim userLock = GetUserLock(id);
await userLock.WaitAsync();
try
{
long currentTotalSize = LarpixServer.Utils.Utils.GetDirectorySize(dirPath);
long fileExistingSize = File.Exists(path) ? new FileInfo(path).Length : 0;
@ -356,6 +392,11 @@ public class Utils
}
await Fs.WriteFile(path, contentBytes);
}
finally
{
userLock.Release();
}
return "success:storage.entry.updated";
}
@ -377,6 +418,10 @@ public class Utils
string dirPath = $"{ACCOUNTS_DATA_DIR}/{id}/storage/public";
string path = $"{dirPath}/{entry}";
SemaphoreSlim userLock = GetUserLock(id);
await userLock.WaitAsync();
try
{
long currentTotalSize = LarpixServer.Utils.Utils.GetDirectorySize(dirPath);
long fileExistingSize = File.Exists(path) ? new FileInfo(path).Length : 0;
@ -386,6 +431,11 @@ public class Utils
}
await Fs.WriteFile(path, contentBytes);
}
finally
{
userLock.Release();
}
return "success:storage.entry.updated";
}
@ -421,6 +471,10 @@ public class Utils
string dirPath = $"{ACCOUNTS_DATA_DIR}/{id}/storage/private";
string path = $"{dirPath}/{entry}";
SemaphoreSlim userLock = GetUserLock(id);
await userLock.WaitAsync();
try
{
long currentTotalSize = LarpixServer.Utils.Utils.GetDirectorySize(dirPath);
long fileExistingSize = File.Exists(path) ? new FileInfo(path).Length : 0;
@ -430,6 +484,11 @@ public class Utils
}
await Fs.WriteFile(path, contentBytes);
}
finally
{
userLock.Release();
}
return "success:storage.entry.updated";
}

28
LarpixServer/Filesystem/Fs.cs
View file

@ -37,24 +37,32 @@ public class Fs
public static void ProcessCacheSpace()
{
while (fileCache.Count >= FILE_CACHE_SIZE)
if (fileCache.Count >= FILE_CACHE_SIZE)
{
var firstKey = fileCache.Keys.FirstOrDefault();
if (firstKey != null) fileCache.TryRemove(firstKey, out _);
foreach (var kvp in fileCache)
{
fileCache.TryRemove(kvp.Key, out _);
if (fileCache.Count < FILE_CACHE_SIZE) break;
}
}
while (existCache.Count >= EXIST_CACHE_SIZE)
if (existCache.Count >= EXIST_CACHE_SIZE)
{
var firstKey = existCache.Keys.FirstOrDefault();
if (firstKey != null) existCache.TryRemove(firstKey, out _);
foreach (var kvp in existCache)
{
existCache.TryRemove(kvp.Key, out _);
if (existCache.Count < EXIST_CACHE_SIZE) break;
}
}
while (dirCache.Count >= DIR_CACHE_SIZE)
if (dirCache.Count >= DIR_CACHE_SIZE)
{
var firstKey = dirCache.Keys.FirstOrDefault();
if (firstKey != null) dirCache.TryRemove(firstKey, out _);
foreach (var kvp in dirCache)
{
dirCache.TryRemove(kvp.Key, out _);
if (dirCache.Count < DIR_CACHE_SIZE) break;
}
}
}
public static ulong ClearCache(string pattern)

209
LarpixServer/Room/Groups.cs
View file

@ -55,7 +55,8 @@ public class Groups
public static async Task<string> GroupCreate(string id, string name, string body, string historyVisible = "false")
{
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(id);
await roomLock.WaitAsync();
try
{
string groupsDir = $"{ROOMS_DIR}/groups";
@ -112,7 +113,7 @@ public class Groups
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
}
@ -156,11 +157,12 @@ public class Groups
if (!Fs.Exists(groupPath)) return "error:group.not.found";
string memberPath = $"{groupPath}/members/{userId};{Utils.Utils.DOMAIN}";
if (!Fs.Exists(memberPath)) return "error:not.a.member";
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
if (!Fs.Exists(memberPath)) return "error:not.a.member";
if (!string.IsNullOrEmpty(name))
{
if (string.IsNullOrWhiteSpace(name)) return "error:invalid.name";
@ -240,7 +242,7 @@ public class Groups
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
return "success";
@ -297,7 +299,7 @@ public class Groups
return JsonSerializer.Serialize(info, AppJsonSerializerContext.Default.Universal6String);
}
public static async Task<string> GroupInvite(string id, string groupId, string targetId)
public static async Task<string> GroupInvite(string id, string groupId, string targetId, string keysPayload = "")
{
bool isLocal = Account.Utils.IsUserLocal(targetId, out string domain);
string tId = Account.Utils.GetValidIdOrZero(targetId);
@ -305,6 +307,54 @@ public class Groups
string groupPath = GetGroupPath(groupId);
if (!Fs.Exists(groupPath)) return "error:group.not.found";
// Validate keys payload based on historyVisible
bool historyVisible = false;
string historyFile = $"{groupPath}/history_visible";
if (Fs.Exists(historyFile))
{
string histContent = Encoding.UTF8.GetString(await Fs.ReadFile(historyFile));
historyVisible = (histContent == "true");
}
if (!historyVisible)
{
if (!string.IsNullOrEmpty(keysPayload))
{
return "error:history.hidden.keys.provided";
}
}
else
{
if (string.IsNullOrEmpty(keysPayload)) return "error:missing.keys";
System.Collections.Generic.Dictionary<string, string> keysDict = null;
try
{
keysDict = JsonSerializer.Deserialize<System.Collections.Generic.Dictionary<string, string>>(keysPayload, AppJsonSerializerContext.Default.DictionaryStringString);
}
catch { }
if (keysDict == null) return "error:missing.keys";
string lastKeyFile = $"{groupPath}/keys/last";
if (Fs.Exists(lastKeyFile))
{
string lastKeyIndexStr = Encoding.UTF8.GetString(await Fs.ReadFile(lastKeyFile));
if (int.TryParse(lastKeyIndexStr, out int lastKeyIndex))
{
for (int i = 0; i <= lastKeyIndex; i++)
{
if (!keysDict.ContainsKey(i.ToString()))
{
return "error:missing.keys";
}
}
}
else return "error:missing.keys";
}
else return "error:missing.keys";
}
// Check if inviter is in group
if (!Fs.Exists($"{groupPath}/members/{id};{DOMAIN}")) return "error:not.in.group";
@ -323,9 +373,15 @@ public class Groups
string inviteFile = ACCOUNTS_DATA_DIR + $"/{id2}/groupinvites/recv/{groupId};{id}";
if (Fs.Exists(inviteFile)) return "info:user.already.invited";
byte[] timestamp = Encoding.UTF8.GetBytes(DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString());
LarpixServer.Utils.Jsons.Universal2String inviteData = new LarpixServer.Utils.Jsons.Universal2String
{
string1 = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString(),
string2 = keysPayload ?? ""
};
byte[] inviteBytes = Encoding.UTF8.GetBytes(JsonSerializer.Serialize(inviteData, AppJsonSerializerContext.Default.Universal2String));
Fs.CreateDirectory(ACCOUNTS_DATA_DIR + $"/{id}/groupinvites/sent");
await Fs.WriteFile(ACCOUNTS_DATA_DIR + $"/{id}/groupinvites/sent/{groupId};{id2}", timestamp);
await Fs.WriteFile(ACCOUNTS_DATA_DIR + $"/{id}/groupinvites/sent/{groupId};{id2}", inviteBytes);
_ = Task.Run(async () =>
{
@ -334,7 +390,7 @@ public class Groups
try
{
Fs.CreateDirectory(ACCOUNTS_DATA_DIR + $"/{id2}/groupinvites/recv");
await Fs.WriteFile(inviteFile, timestamp);
await Fs.WriteFile(inviteFile, inviteBytes);
}
finally
{
@ -405,14 +461,17 @@ public class Groups
if (iId == "0") return "error:invalid.user";
string inviteFile = ACCOUNTS_DATA_DIR + $"/{id}/groupinvites/recv/{groupId};{iId}";
if (!Fs.Exists(inviteFile)) return "error:no.invite";
string groupPath = GetGroupPath(groupId);
if (!Fs.Exists(groupPath)) return "error:group.not.found";
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
if (!Fs.Exists(inviteFile)) return "error:no.invite";
string inviteContent = Encoding.UTF8.GetString(await Fs.ReadFile(inviteFile));
// Delete the invites
Fs.DeleteFile(inviteFile);
if (Account.Utils.IsUserLocal(inviterId, out string domain))
@ -423,13 +482,54 @@ public class Groups
// Add to members
await Fs.WriteFile($"{groupPath}/members/{id};{DOMAIN}", Array.Empty<byte>());
// Require new key if history is not visible
// Read invite data
string keysPayload = "";
if (inviteContent.StartsWith("{"))
{
try
{
var data = JsonSerializer.Deserialize<LarpixServer.Utils.Jsons.Universal2String>(inviteContent, LarpixServer.Utils.Jsons.AppJsonSerializerContext.Default.Universal2String);
if (data != null)
{
keysPayload = data.string2 ?? "";
}
}
catch { }
}
// Require new key if history is not visible or no keys were provided
bool historyVisible = false;
if (Fs.Exists($"{groupPath}/history_visible"))
{
historyVisible = Encoding.UTF8.GetString(await Fs.ReadFile($"{groupPath}/history_visible")) == "true";
}
if (!historyVisible)
if (historyVisible && !string.IsNullOrEmpty(keysPayload))
{
System.Collections.Generic.Dictionary<string, string> keysDict = null;
try
{
keysDict = JsonSerializer.Deserialize<System.Collections.Generic.Dictionary<string, string>>(keysPayload, AppJsonSerializerContext.Default.DictionaryStringString);
}
catch { }
if (keysDict != null)
{
foreach (var kvp in keysDict)
{
string keyIndex = kvp.Key;
string keyData = kvp.Value;
string newKeyDir = $"{groupPath}/keys/{keyIndex}";
Fs.CreateDirectory(newKeyDir);
await Fs.WriteFile($"{newKeyDir}/{id};{DOMAIN}", Encoding.UTF8.GetBytes(keyData));
}
}
else
{
await Fs.WriteFile($"{groupPath}/keys/newrequired", Encoding.UTF8.GetBytes("true"));
}
}
else
{
await Fs.WriteFile($"{groupPath}/keys/newrequired", Encoding.UTF8.GetBytes("true"));
}
@ -454,11 +554,26 @@ public class Groups
await UpdateUserGroup(id, groupId, "true", timestamp);
// Notify all members (including the new one) via WebSocket
string[] currentMembers = Fs.ReadDirectory($"{groupPath}/members");
foreach (string memberWD in currentMembers)
{
string memberStr = Path.GetFileName(memberWD);
string memberIdStr = Account.Utils.GetValidIdOrZero(memberStr);
if (Account.Utils.IsUserLocal(memberStr, out string d))
{
_ = Task.Run(async () =>
{
await Utils.Utils.SendWsMessage(memberIdStr, $"group_message:{groupId}:unread");
});
}
}
return "success:joined";
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
}
@ -492,11 +607,13 @@ public class Groups
string groupPath = GetGroupPath(groupId);
if (!Fs.Exists(groupPath)) return "error:group.not.found";
if (!Fs.Exists($"{groupPath}/members/{id};{DOMAIN}")) return "error:not.in.group";
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
if (!Fs.Exists($"{groupPath}/members/{id};{DOMAIN}")) return "error:not.in.group";
// 1. Check if newrequired is true
string newRequiredPath = $"{groupPath}/keys/newrequired";
if (!Fs.Exists(newRequiredPath) || Encoding.UTF8.GetString(await Fs.ReadFile(newRequiredPath)) != "true")
@ -549,7 +666,7 @@ public class Groups
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
}
@ -591,11 +708,20 @@ public class Groups
catch { contentBytes = Encoding.UTF8.GetBytes(contentBase64); }
string dirPath = $"{Utils.Utils.ROOMS_DIR}/groups/{domain}/{id}/storage/public";
string path = $"{dirPath}/{entry}";
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
Fs.CreateDirectory(dirPath);
long currentTotalSize = Utils.Utils.GetDirectorySize(dirPath);
long fileExistingSize = Fs.Exists(path) ? new System.IO.FileInfo(path).Length : 0;
if (currentTotalSize - fileExistingSize + contentBytes.Length > Utils.Utils.PUBLIC_STORAGE_LIMIT) return "error:storage.limit.exceeded";
await Fs.WriteFile(path, contentBytes);
}
finally
{
roomLock.Release();
}
return "success:storage.entry.updated";
}
public static async Task<string> GetGroupPrivateStorageEntry(string userId, string groupId, string entry)
@ -623,11 +749,20 @@ public class Groups
catch { contentBytes = Encoding.UTF8.GetBytes(contentBase64); }
string dirPath = $"{Utils.Utils.ROOMS_DIR}/groups/{domain}/{id}/storage/private";
string path = $"{dirPath}/{entry}";
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
Fs.CreateDirectory(dirPath);
long currentTotalSize = Utils.Utils.GetDirectorySize(dirPath);
long fileExistingSize = Fs.Exists(path) ? new System.IO.FileInfo(path).Length : 0;
if (currentTotalSize - fileExistingSize + contentBytes.Length > Utils.Utils.PRIVATE_STORAGE_LIMIT) return "error:storage.limit.exceeded";
await Fs.WriteFile(path, contentBytes);
}
finally
{
roomLock.Release();
}
return "success:storage.entry.updated";
}
@ -640,7 +775,8 @@ public class Groups
if (!Fs.Exists(groupPath)) return "error:group.not.found";
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
string membersDir = $"{groupPath}/members";
@ -661,7 +797,7 @@ public class Groups
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
return "success";
@ -678,12 +814,14 @@ public class Groups
return "error:group.not.found";
string memberPath = $"{groupPath}/members/{userId};{Utils.Utils.DOMAIN}";
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(groupId);
await roomLock.WaitAsync();
try
{
if (!Fs.Exists(memberPath))
return "error:not.a.member";
await Room.Requests.createLock.WaitAsync();
try
{
// Remove from members
Fs.DeleteFile(memberPath);
@ -694,16 +832,8 @@ public class Groups
Fs.DeleteFile(userGroupPath);
}
// Require new key if history is not visible
bool historyVisible = false;
if (Fs.Exists($"{groupPath}/history_visible"))
{
historyVisible = Encoding.UTF8.GetString(await Fs.ReadFile($"{groupPath}/history_visible")) == "true";
}
if (!historyVisible)
{
// Always require new key when someone leaves
await Fs.WriteFile($"{groupPath}/keys/newrequired", Encoding.UTF8.GetBytes("true"));
}
// Add info message
Message msg = new();
@ -724,10 +854,25 @@ public class Groups
}
await Fs.WriteFile($"{groupPath}/messages/last", Encoding.UTF8.GetBytes(msgId.ToString()));
await Fs.WriteFile($"{groupPath}/messages/{msgId}", Encoding.UTF8.GetBytes(JsonSerializer.Serialize(msg, AppJsonSerializerContext.Default.Message)));
// Notify remaining members via WebSocket
string[] currentMembers = Fs.ReadDirectory($"{groupPath}/members");
foreach (string memberWD in currentMembers)
{
string memberStr = Path.GetFileName(memberWD);
string memberIdStr = Account.Utils.GetValidIdOrZero(memberStr);
if (Account.Utils.IsUserLocal(memberStr, out string d))
{
_ = Task.Run(async () =>
{
await Utils.Utils.SendWsMessage(memberIdStr, $"group_message:{groupId}:unread");
});
}
}
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
// If members count == 0, delete group folder and we are done.

17
LarpixServer/Room/Requests.cs
View file

@ -10,6 +10,23 @@ namespace LarpixServer.Room;
public class Requests
{
public static SemaphoreSlim createLock = new SemaphoreSlim(1, 1);
private static SemaphoreSlim[]? _roomLocksArray = null;
public static SemaphoreSlim GetRoomLock(string roomId)
{
if (_roomLocksArray == null)
{
int size = LOCK_SIZE > 0 ? LOCK_SIZE : 65536;
var newArray = Enumerable.Range(0, size).Select(_ => new SemaphoreSlim(1, 1)).ToArray();
Interlocked.CompareExchange(ref _roomLocksArray, newArray, null);
}
int hash = roomId.GetHashCode();
int index = (hash & 0x7FFFFFFF) % _roomLocksArray.Length;
return _roomLocksArray[index];
}
public const int MAX_DM_KEY_SIZE = 8192;
private static bool IsSafeDmId(string dmId)

36
LarpixServer/Room/Shared.cs
View file

@ -121,6 +121,14 @@ public class Shared
}
public static async Task<string> MessageSend(string id, string roomType, string roomId, string content, string attachment, string responded, string keyIndex = "0")
{
string msgDir = $"{GetRoomPath(roomType, roomId)}/messages";
long nextId = 0;
Message msg = new Message();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
if (!await IsMemberOfRoom(id, roomType, roomId)) return "error:forbidden";
@ -154,13 +162,6 @@ public class Shared
return $"error:message.too.long:{sizeStr}";
}
string msgDir = $"{GetRoomPath(roomType, roomId)}/messages";
long nextId = 0;
Message msg = new Message();
await Room.Requests.createLock.WaitAsync();
try
{
long last = 0;
if (Fs.Exists($"{msgDir}/last"))
{
@ -218,7 +219,7 @@ public class Shared
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
@ -266,6 +267,10 @@ public class Shared
string msgPath = $"{GetRoomPath(roomType, roomId)}/messages/{msgId}";
if (!Fs.Exists(msgPath)) return "error:message.not.found";
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
Message msg = JsonSerializer.Deserialize(
Encoding.UTF8.GetString(await Fs.ReadFile(msgPath)),
AppJsonSerializerContext.Default.Message
@ -293,6 +298,11 @@ public class Shared
{
Fs.DeleteDirectory(attDir);
}
}
finally
{
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
foreach(string memberWD in members)
@ -331,7 +341,8 @@ public class Shared
string reactDir = $"{GetRoomPath(roomType, roomId)}/reactions/{msgId}";
if (!Fs.Exists(reactDir)) Fs.CreateDirectory(reactDir);
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
long last = 0;
@ -346,7 +357,7 @@ public class Shared
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");
@ -411,7 +422,8 @@ public class Shared
string pinnedFilePath = $"{pinnedDir}/{msgId}";
bool isNowPinned = false;
await Room.Requests.createLock.WaitAsync();
SemaphoreSlim roomLock = Room.Requests.GetRoomLock(roomId);
await roomLock.WaitAsync();
try
{
if (Fs.Exists(pinnedFilePath))
@ -450,7 +462,7 @@ public class Shared
}
finally
{
Room.Requests.createLock.Release();
roomLock.Release();
}
string[] members = Fs.ReadDirectory($"{GetRoomPath(roomType, roomId)}/members");