fixes #4641 (Telegram: удаление с сервера чужих сообщений групчата, если пользователь Миранды не модератор/владелец)

3 files changed, 19 insertions, 14 deletions

diff --git a/protocols/Telegram/src/proto.cpp b/protocols/Telegram/src/proto.cpp
index 73834415b8..a61d72b6ba 100644
--- a/protocols/Telegram/src/proto.cpp
+++ b/protocols/Telegram/src/proto.cpp
@@ -349,21 +349,12 @@ int CTelegramProto::AuthRequest(MCONTACT hContact, const wchar_t *)
 
 INT_PTR CTelegramProto::GetCaps(int type, MCONTACT hContact)
 {
-	uint32_t ret;
-
 	switch (type) {
 	case PFLAGNUM_1:
 		return PF1_IM | PF1_FILE | PF1_CHAT | PF1_SEARCHBYNAME | PF1_ADDSEARCHRES | PF1_MODEMSGRECV | PF1_SERVERCLIST;
 
 	case PFLAGNUM_2:
 		return PF2_ONLINE | PF2_SHORTAWAY | PF2_LONGAWAY;
-
-	case PFLAGNUM_4:
-		ret = PF4_NOCUSTOMAUTH | PF4_FORCEAUTH | PF4_OFFLINEFILES | PF4_NOAUTHDENYREASON | PF4_SUPPORTTYPING | PF4_AVATARS 
-			| PF4_SERVERMSGID | PF4_REPLY | PF4_GROUPCHATFILES | PF4_IMSENDOFFLINE | PF4_SERVERFORMATTING;
-		if (GetId(hContact) != m_iOwnId)
-			ret |= PF4_DELETEFORALL;
-		return ret;
 		
 	case PFLAGNUM_5:
 		return PF2_SHORTAWAY | PF2_LONGAWAY;
@@ -371,9 +362,17 @@ INT_PTR CTelegramProto::GetCaps(int type, MCONTACT hContact)
 	case PFLAG_UNIQUEIDTEXT:
 		return (INT_PTR)L"ID";
 
-	default:
-		return 0;
+	case PFLAGNUM_4:
+		uint32_t ret = PF4_NOCUSTOMAUTH | PF4_FORCEAUTH | PF4_OFFLINEFILES | PF4_NOAUTHDENYREASON | PF4_SUPPORTTYPING | PF4_AVATARS
+			| PF4_SERVERMSGID | PF4_REPLY | PF4_GROUPCHATFILES | PF4_IMSENDOFFLINE | PF4_SERVERFORMATTING;
+
+		if (GetId(hContact) != m_iOwnId)
+			ret |= PF4_DELETEFORALL;
+
+		return ret;
 	}
+
+	return 0;
 }
 
 /////////////////////////////////////////////////////////////////////////////////////////
diff --git a/protocols/Telegram/src/proto.h b/protocols/Telegram/src/proto.h
index dec95199dc..69737ba35c 100644
--- a/protocols/Telegram/src/proto.h
+++ b/protocols/Telegram/src/proto.h
@@ -102,7 +102,7 @@ struct TG_USER : public MZeroedObject
 	int64_t   id, chatId = -1;
 	MCONTACT  hContact;
 	int       folderId = -1, nHistoryChunks;
-	bool      isGroupChat, isChannel, isBot, isForum, bLoadMembers, bStartChat, bInited;
+	bool      isGroupChat, isChannel, isBot, isForum, bLoadMembers, bStartChat, bInited, bDelOwn = true, bDelAll = true;
 	CMStringA szAvatarHash;
 	CMStringW wszNick, wszFirstName, wszLastName;
 	time_t    m_timer1 = 0, m_timer2 = 0;
diff --git a/protocols/Telegram/src/server.cpp b/protocols/Telegram/src/server.cpp
index 9303509442..0f97275314 100644
--- a/protocols/Telegram/src/server.cpp
+++ b/protocols/Telegram/src/server.cpp
@@ -520,12 +520,16 @@ INT_PTR CTelegramProto::SvcLoadServerHistory(WPARAM hContact, LPARAM)
 

 ///////////////////////////////////////////////////////////////////////////////

 

-INT_PTR CTelegramProto::SvcCanEmptyHistory(WPARAM hContact, LPARAM)

+INT_PTR CTelegramProto::SvcCanEmptyHistory(WPARAM hContact, LPARAM bIncoming)

 {

 	if (auto *pUser = FindUser(GetId(hContact))) {

 		TG_SUPER_GROUP tmp(pUser->id, 0);

 		if (auto *pGroup = m_arSuperGroups.find(&tmp))

-			return !pGroup->group->is_channel_;

+			if (pGroup->group->is_channel_)

+				return 0;

+

+		if (!pUser->bDelOwn || (bIncoming && !pUser->bDelAll))

+			return 0;

 		

 		return 1;

 	}

@@ -586,6 +590,8 @@ void CTelegramProto::ProcessChat(TD::updateNewChat *pObj)
 

 	pUser->chatId = pChat->id_;

 	pUser->isChannel = isChannel;

+	pUser->bDelAll = pChat->can_be_deleted_for_all_users_;

+	pUser->bDelOwn = pChat->can_be_deleted_only_for_self_;

 

 	MCONTACT hContact = (pUser->id == m_iOwnId) ? 0 : pUser->hContact;