tdesktop/Telegram/SourceFiles/api/api_user_privacy.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "api/api_user_privacy.h"
#include "apiwrap.h"
#include "data/data_chat.h"
#include "data/data_channel.h"
#include "data/data_peer.h"
#include "data/data_peer_id.h"
#include "data/data_session.h"
#include "data/data_user.h"
#include "main/main_session.h"
#include "settings/settings_premium.h" // Settings::ShowPremium.
namespace Api {
namespace {
constexpr auto kMaxRules = 3; // Allow users, disallow users, Option.
using TLInputRules = MTPVector<MTPInputPrivacyRule>;
using TLRules = MTPVector<MTPPrivacyRule>;
TLInputRules RulesToTL(const UserPrivacy::Rule &rule) {
const auto collectInputUsers = [](const auto &peers) {
auto result = QVector<MTPInputUser>();
result.reserve(peers.size());
for (const auto &peer : peers) {
if (const auto user = peer->asUser()) {
result.push_back(user->inputUser);
}
}
return result;
};
const auto collectInputChats = [](const auto &peers) {
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auto result = QVector<MTPlong>();
result.reserve(peers.size());
for (const auto &peer : peers) {
if (!peer->isUser()) {
result.push_back(peerToBareMTPInt(peer->id));
}
}
return result;
};
auto result = QVector<MTPInputPrivacyRule>();
result.reserve(kMaxRules);
if (!rule.ignoreAlways) {
const auto users = collectInputUsers(rule.always);
const auto chats = collectInputChats(rule.always);
if (!users.empty()) {
result.push_back(
MTP_inputPrivacyValueAllowUsers(
MTP_vector<MTPInputUser>(users)));
}
if (!chats.empty()) {
result.push_back(
MTP_inputPrivacyValueAllowChatParticipants(
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MTP_vector<MTPlong>(chats)));
}
}
if (!rule.ignoreNever) {
const auto users = collectInputUsers(rule.never);
const auto chats = collectInputChats(rule.never);
if (!users.empty()) {
result.push_back(
MTP_inputPrivacyValueDisallowUsers(
MTP_vector<MTPInputUser>(users)));
}
if (!chats.empty()) {
result.push_back(
MTP_inputPrivacyValueDisallowChatParticipants(
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MTP_vector<MTPlong>(chats)));
}
}
result.push_back([&] {
using Option = UserPrivacy::Option;
switch (rule.option) {
case Option::Everyone: return MTP_inputPrivacyValueAllowAll();
case Option::Contacts: return MTP_inputPrivacyValueAllowContacts();
case Option::Nobody: return MTP_inputPrivacyValueDisallowAll();
}
Unexpected("Option value in Api::UserPrivacy::RulesToTL.");
}());
return MTP_vector<MTPInputPrivacyRule>(std::move(result));
}
UserPrivacy::Rule TLToRules(const TLRules &rules, Data::Session &owner) {
// This is simplified version of privacy rules interpretation.
// But it should be fine for all the apps
// that use the same subset of features.
using Option = UserPrivacy::Option;
auto result = UserPrivacy::Rule();
auto optionSet = false;
const auto setOption = [&](Option option) {
if (optionSet) return;
optionSet = true;
result.option = option;
};
auto &always = result.always;
auto &never = result.never;
const auto feed = [&](const MTPPrivacyRule &rule) {
rule.match([&](const MTPDprivacyValueAllowAll &) {
setOption(Option::Everyone);
}, [&](const MTPDprivacyValueAllowContacts &) {
setOption(Option::Contacts);
}, [&](const MTPDprivacyValueAllowUsers &data) {
const auto &users = data.vusers().v;
always.reserve(always.size() + users.size());
for (const auto &userId : users) {
const auto user = owner.user(UserId(userId.v));
if (!base::contains(never, user)
&& !base::contains(always, user)) {
always.emplace_back(user);
}
}
}, [&](const MTPDprivacyValueAllowChatParticipants &data) {
const auto &chats = data.vchats().v;
always.reserve(always.size() + chats.size());
for (const auto &chatId : chats) {
const auto chat = owner.chatLoaded(chatId);
const auto peer = chat
? static_cast<PeerData*>(chat)
: owner.channelLoaded(chatId);
if (peer
&& !base::contains(never, peer)
&& !base::contains(always, peer)) {
always.emplace_back(peer);
}
}
}, [&](const MTPDprivacyValueDisallowContacts &) {
// Not supported
}, [&](const MTPDprivacyValueDisallowAll &) {
setOption(Option::Nobody);
}, [&](const MTPDprivacyValueDisallowUsers &data) {
const auto &users = data.vusers().v;
never.reserve(never.size() + users.size());
for (const auto &userId : users) {
const auto user = owner.user(UserId(userId.v));
if (!base::contains(always, user)
&& !base::contains(never, user)) {
never.emplace_back(user);
}
}
}, [&](const MTPDprivacyValueDisallowChatParticipants &data) {
const auto &chats = data.vchats().v;
never.reserve(never.size() + chats.size());
for (const auto &chatId : chats) {
const auto chat = owner.chatLoaded(chatId);
const auto peer = chat
? static_cast<PeerData*>(chat)
: owner.channelLoaded(chatId);
if (peer
&& !base::contains(always, peer)
&& !base::contains(never, peer)) {
never.emplace_back(peer);
}
}
});
};
for (const auto &rule : rules.v) {
feed(rule);
}
feed(MTP_privacyValueDisallowAll()); // Disallow by default.
return result;
}
MTPInputPrivacyKey KeyToTL(UserPrivacy::Key key) {
using Key = UserPrivacy::Key;
switch (key) {
case Key::Calls: return MTP_inputPrivacyKeyPhoneCall();
case Key::Invites: return MTP_inputPrivacyKeyChatInvite();
case Key::PhoneNumber: return MTP_inputPrivacyKeyPhoneNumber();
case Key::AddedByPhone:
return MTP_inputPrivacyKeyAddedByPhone();
case Key::LastSeen:
return MTP_inputPrivacyKeyStatusTimestamp();
case Key::CallsPeer2Peer:
return MTP_inputPrivacyKeyPhoneP2P();
case Key::Forwards:
return MTP_inputPrivacyKeyForwards();
case Key::ProfilePhoto:
return MTP_inputPrivacyKeyProfilePhoto();
case Key::Voices:
return MTP_inputPrivacyKeyVoiceMessages();
}
Unexpected("Key in Api::UserPrivacy::KetToTL.");
}
std::optional<UserPrivacy::Key> TLToKey(mtpTypeId type) {
using Key = UserPrivacy::Key;
switch (type) {
case mtpc_privacyKeyPhoneNumber:
case mtpc_inputPrivacyKeyPhoneNumber: return Key::PhoneNumber;
case mtpc_privacyKeyAddedByPhone:
case mtpc_inputPrivacyKeyAddedByPhone: return Key::AddedByPhone;
case mtpc_privacyKeyStatusTimestamp:
case mtpc_inputPrivacyKeyStatusTimestamp: return Key::LastSeen;
case mtpc_privacyKeyChatInvite:
case mtpc_inputPrivacyKeyChatInvite: return Key::Invites;
case mtpc_privacyKeyPhoneCall:
case mtpc_inputPrivacyKeyPhoneCall: return Key::Calls;
case mtpc_privacyKeyPhoneP2P:
case mtpc_inputPrivacyKeyPhoneP2P: return Key::CallsPeer2Peer;
case mtpc_privacyKeyForwards:
case mtpc_inputPrivacyKeyForwards: return Key::Forwards;
case mtpc_privacyKeyProfilePhoto:
case mtpc_inputPrivacyKeyProfilePhoto: return Key::ProfilePhoto;
case mtpc_privacyKeyVoiceMessages:
case mtpc_inputPrivacyKeyVoiceMessages: return Key::Voices;
}
return std::nullopt;
}
} // namespace
UserPrivacy::UserPrivacy(not_null<ApiWrap*> api)
: _session(&api->session())
, _api(&api->instance()) {
}
void UserPrivacy::save(
Key key,
const UserPrivacy::Rule &rule) {
const auto tlKey = KeyToTL(key);
const auto keyTypeId = tlKey.type();
const auto it = _privacySaveRequests.find(keyTypeId);
if (it != _privacySaveRequests.cend()) {
_api.request(it->second).cancel();
_privacySaveRequests.erase(it);
}
const auto requestId = _api.request(MTPaccount_SetPrivacy(
tlKey,
RulesToTL(rule)
)).done([=](const MTPaccount_PrivacyRules &result) {
result.match([&](const MTPDaccount_privacyRules &data) {
_session->data().processUsers(data.vusers());
_session->data().processChats(data.vchats());
_privacySaveRequests.remove(keyTypeId);
apply(keyTypeId, data.vrules(), true);
});
}).fail([=](const MTP::Error &error) {
const auto message = error.type();
if (message == u"PREMIUM_ACCOUNT_REQUIRED"_q) {
Settings::ShowPremium(_session, QString());
}
_privacySaveRequests.remove(keyTypeId);
}).send();
_privacySaveRequests.emplace(keyTypeId, requestId);
}
void UserPrivacy::apply(
mtpTypeId type,
const TLRules &rules,
bool allLoaded) {
if (const auto key = TLToKey(type)) {
if (!allLoaded) {
reload(*key);
return;
}
pushPrivacy(*key, rules);
if ((*key) == Key::LastSeen) {
_session->api().updatePrivacyLastSeens();
}
}
}
void UserPrivacy::reload(Key key) {
if (_privacyRequestIds.contains(key)) {
return;
}
const auto requestId = _api.request(MTPaccount_GetPrivacy(
KeyToTL(key)
)).done([=](const MTPaccount_PrivacyRules &result) {
_privacyRequestIds.erase(key);
result.match([&](const MTPDaccount_privacyRules &data) {
_session->data().processUsers(data.vusers());
_session->data().processChats(data.vchats());
pushPrivacy(key, data.vrules());
});
}).fail([=] {
_privacyRequestIds.erase(key);
}).send();
_privacyRequestIds.emplace(key, requestId);
}
void UserPrivacy::pushPrivacy(Key key, const TLRules &rules) {
const auto &saved = (_privacyValues[key] =
TLToRules(rules, _session->data()));
const auto i = _privacyChanges.find(key);
if (i != end(_privacyChanges)) {
i->second.fire_copy(saved);
}
}
auto UserPrivacy::value(Key key) -> rpl::producer<UserPrivacy::Rule> {
if (const auto i = _privacyValues.find(key); i != end(_privacyValues)) {
return _privacyChanges[key].events_starting_with_copy(i->second);
} else {
return _privacyChanges[key].events();
}
}
} // namespace Api