updated liteserver

- new methods for liteserver/liteclient
- added ADNL/DHT client-only work mode
- fixed crash in ADNL

tdutils/td/utils/BufferedFd.h

@@ -14,7 +14,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
 
-    Copyright 2017-2019 Telegram Systems LLP
+    Copyright 2017-2020 Telegram Systems LLP
 */
 #pragma once
 
@@ -84,6 +84,12 @@ class BufferedFd : public BufferedFdBase<FdT> {
   ~BufferedFd();
 
   void close();
+  size_t left_unread() {
+    return input_reader_.size();
+  }
+  size_t left_unwritten() {
+    return output_reader_.size();
+  }
 
   Result<size_t> flush_read(size_t max_read = std::numeric_limits<size_t>::max()) TD_WARN_UNUSED_RESULT;
   Result<size_t> flush_write() TD_WARN_UNUSED_RESULT;

tdutils/td/utils/FileLog.cpp

@@ -14,7 +14,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
 
-    Copyright 2017-2019 Telegram Systems LLP
+    Copyright 2017-2020 Telegram Systems LLP
 */
 #include "td/utils/FileLog.h"
 
@@ -128,4 +128,10 @@ void FileLog::do_rotate() {
   SET_VERBOSITY_LEVEL(current_verbosity_level);
 }
 
+Result<td::unique_ptr<LogInterface>> FileLog::create(string path, int64 rotate_threshold, bool redirect_stderr) {
+  auto l = make_unique<FileLog>();
+  TRY_STATUS(l->init(std::move(path), rotate_threshold, redirect_stderr));
+  return std::move(l);
+}
+
 }  // namespace td

tdutils/td/utils/FileLog.h

@@ -14,7 +14,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
 
-    Copyright 2017-2019 Telegram Systems LLP
+    Copyright 2017-2020 Telegram Systems LLP
 */
 #pragma once
 
@@ -30,6 +30,8 @@ class FileLog : public LogInterface {
   static constexpr int64 DEFAULT_ROTATE_THRESHOLD = 10 * (1 << 20);
 
  public:
+  static Result<td::unique_ptr<LogInterface>> create(string path, int64 rotate_threshold = DEFAULT_ROTATE_THRESHOLD,
+                                                     bool redirect_stderr = true);
   Status init(string path, int64 rotate_threshold = DEFAULT_ROTATE_THRESHOLD, bool redirect_stderr = true);
 
   Slice get_path() const;

tdutils/td/utils/misc.h

@@ -14,7 +14,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
 
-    Copyright 2017-2019 Telegram Systems LLP
+    Copyright 2017-2020 Telegram Systems LLP
 */
 #pragma once
 
@@ -44,12 +44,12 @@ std::pair<T, T> split(T s, char delimiter = ' ') {
 }
 
 template <class T>
-vector<T> full_split(T s, char delimiter = ' ') {
+vector<T> full_split(T s, char delimiter = ' ', size_t max_parts = std::numeric_limits<size_t>::max()) {
   vector<T> result;
   if (s.empty()) {
     return result;
   }
-  while (true) {
+  while (result.size() + 1 < max_parts) {
     auto delimiter_pos = s.find(delimiter);
     if (delimiter_pos == string::npos) {
       result.push_back(std::move(s));
@@ -59,6 +59,8 @@ vector<T> full_split(T s, char delimiter = ' ') {
       s = s.substr(delimiter_pos + 1);
     }
   }
+  result.push_back(std::move(s));
+  return result;
 }
 
 string implode(const vector<string> &v, char delimiter = ' ');

tdutils/td/utils/port/detail/Epoll.cpp

@@ -14,7 +14,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
 
-    Copyright 2017-2019 Telegram Systems LLP
+    Copyright 2017-2020 Telegram Systems LLP
 */
 #include "td/utils/port/detail/Epoll.h"
 
@@ -109,6 +109,7 @@ void Epoll::run(int timeout_ms) {
 #ifdef EPOLLRDHUP
     if (event->events & EPOLLRDHUP) {
       event->events &= ~EPOLLRDHUP;
+      flags = flags | PollFlags::Close();
       //      flags |= Fd::Close;
       // TODO
     }