717 lines
18 KiB
C++
717 lines
18 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "core/basic_types.h"
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#include <array>
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#include <algorithm>
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#include <set>
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#include <gsl/gsl>
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// Release build assertions.
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inline void t_noop() {
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}
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[[noreturn]] inline void t_assert_fail(const char *message, const char *file, int32 line) {
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auto info = qsl("%1 %2:%3").arg(message).arg(file).arg(line);
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LOG(("Assertion Failed! ") + info);
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SignalHandlers::setCrashAnnotation("Assertion", info);
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// Crash with access violation and generate crash report.
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volatile int *t_assert_nullptr = nullptr;
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*t_assert_nullptr = 0;
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// Silent the possible failure to comply noreturn warning.
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std::abort();
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}
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#define t_assert_full(condition, message, file, line) ((GSL_UNLIKELY(!(condition))) ? t_assert_fail(message, file, line) : t_noop())
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#define t_assert_c(condition, comment) t_assert_full(condition, "\"" #condition "\" (" comment ")", __FILE__, __LINE__)
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#define t_assert(condition) t_assert_full(condition, "\"" #condition "\"", __FILE__, __LINE__)
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// Declare our own versions of Expects() and Ensures().
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// Let them crash with reports and logging.
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#ifdef Expects
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#undef Expects
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#endif // Expects
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#define Expects(condition) t_assert_full(condition, "\"" #condition "\"", __FILE__, __LINE__)
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#ifdef Ensures
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#undef Ensures
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#endif // Ensures
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#define Ensures(condition) t_assert_full(condition, "\"" #condition "\"", __FILE__, __LINE__)
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#ifdef Unexpected
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#undef Unexpected
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#endif // Unexpected
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#define Unexpected(message) t_assert_fail("Unexpected: " message, __FILE__, __LINE__)
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// Define specializations for QByteArray for Qt 5.3.2, because
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// QByteArray in Qt 5.3.2 doesn't declare "pointer" subtype.
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#ifdef OS_MAC_OLD
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namespace gsl {
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template <>
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inline span<char> make_span<QByteArray>(QByteArray &cont) {
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return span<char>(cont.data(), cont.size());
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}
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template <>
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inline span<const char> make_span(const QByteArray &cont) {
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return span<const char>(cont.constData(), cont.size());
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}
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} // namespace gsl
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#endif // OS_MAC_OLD
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namespace base {
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template <typename T, size_t N>
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inline constexpr size_t array_size(const T(&)[N]) {
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return N;
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}
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template <typename T>
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inline T take(T &source) {
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return std::exchange(source, T());
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}
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namespace internal {
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template <typename D, typename T>
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inline constexpr D up_cast_helper(std::true_type, T object) {
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return object;
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}
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template <typename D, typename T>
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inline constexpr D up_cast_helper(std::false_type, T object) {
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return nullptr;
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}
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} // namespace internal
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template <typename D, typename T>
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inline constexpr D up_cast(T object) {
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using DV = std::decay_t<decltype(*D())>;
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using TV = std::decay_t<decltype(*T())>;
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return internal::up_cast_helper<D>(std::integral_constant<bool, std::is_base_of<DV, TV>::value || std::is_same<DV, TV>::value>(), object);
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}
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template <typename Lambda>
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class scope_guard_helper {
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public:
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scope_guard_helper(Lambda on_scope_exit) : _handler(std::move(on_scope_exit)) {
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}
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void dismiss() {
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_dismissed = true;
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}
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~scope_guard_helper() {
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if (!_dismissed) {
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_handler();
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}
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}
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private:
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Lambda _handler;
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bool _dismissed = false;
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};
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template <typename Lambda>
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scope_guard_helper<Lambda> scope_guard(Lambda on_scope_exit) {
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return scope_guard_helper<Lambda>(std::move(on_scope_exit));
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}
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template <typename Container, typename T>
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inline bool contains(const Container &container, const T &value) {
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auto end = std::end(container);
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return std::find(std::begin(container), end, value) != end;
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}
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// We need a custom comparator for std::set<std::unique_ptr<T>>::find to work with pointers.
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// thanks to http://stackoverflow.com/questions/18939882/raw-pointer-lookup-for-sets-of-unique-ptrs
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template <typename T>
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struct pointer_comparator {
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using is_transparent = std::true_type;
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// helper does some magic in order to reduce the number of
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// pairs of types we need to know how to compare: it turns
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// everything into a pointer, and then uses `std::less<T*>`
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// to do the comparison:
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struct helper {
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T *ptr = nullptr;
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helper() = default;
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helper(const helper &other) = default;
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helper(T *p) : ptr(p) {
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}
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template <typename ...Ts>
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helper(const std::shared_ptr<Ts...> &other) : ptr(other.get()) {
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}
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template <typename ...Ts>
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helper(const std::unique_ptr<Ts...> &other) : ptr(other.get()) {
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}
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bool operator<(helper other) const {
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return std::less<T*>()(ptr, other.ptr);
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}
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};
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// without helper, we'd need 2^n different overloads, where
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// n is the number of types we want to support (so, 8 with
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// raw pointers, unique pointers, and shared pointers). That
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// seems silly.
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// && helps enforce rvalue use only
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bool operator()(const helper &&lhs, const helper &&rhs) const {
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return lhs < rhs;
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}
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};
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template <typename T>
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using set_of_unique_ptr = std::set<std::unique_ptr<T>, base::pointer_comparator<T>>;
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template <typename T>
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using set_of_shared_ptr = std::set<std::shared_ptr<T>, base::pointer_comparator<T>>;
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using byte_span = gsl::span<gsl::byte>;
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using const_byte_span = gsl::span<const gsl::byte>;
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inline void copy_bytes(byte_span destination, const_byte_span source) {
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Expects(destination.size() >= source.size());
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memcpy(destination.data(), source.data(), source.size());
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}
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} // namespace base
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// using for_const instead of plain range-based for loop to ensure usage of const_iterator
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// it is important for the copy-on-write Qt containers
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// if you have "QVector<T*> v" then "for (T * const p : v)" will still call QVector::detach(),
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// while "for_const (T *p, v)" won't and "for_const (T *&p, v)" won't compile
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#define for_const(range_declaration, range_expression) for (range_declaration : std::as_const(range_expression))
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template <typename Enum>
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inline QFlags<Enum> qFlags(Enum v) {
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return QFlags<Enum>(v);
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}
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static const int32 ScrollMax = INT_MAX;
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extern uint64 _SharedMemoryLocation[];
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template <typename T, unsigned int N>
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T *SharedMemoryLocation() {
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static_assert(N < 4, "Only 4 shared memory locations!");
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return reinterpret_cast<T*>(_SharedMemoryLocation + N);
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}
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// see https://github.com/boostcon/cppnow_presentations_2012/blob/master/wed/schurr_cpp11_tools_for_class_authors.pdf
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class str_const { // constexpr string
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public:
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template<std::size_t N>
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constexpr str_const(const char(&a)[N]) : _str(a), _size(N - 1) {
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}
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constexpr char operator[](std::size_t n) const {
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return (n < _size) ? _str[n] :
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#ifndef OS_MAC_OLD
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throw std::out_of_range("");
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#else // OS_MAC_OLD
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throw std::exception();
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#endif // OS_MAC_OLD
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}
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constexpr std::size_t size() const { return _size; }
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const char *c_str() const { return _str; }
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private:
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const char* const _str;
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const std::size_t _size;
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};
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inline QString str_const_toString(const str_const &str) {
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return QString::fromUtf8(str.c_str(), str.size());
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}
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inline QByteArray str_const_toByteArray(const str_const &str) {
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return QByteArray::fromRawData(str.c_str(), str.size());
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}
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template <typename T>
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inline void accumulate_max(T &a, const T &b) { if (a < b) a = b; }
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template <typename T>
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inline void accumulate_min(T &a, const T &b) { if (a > b) a = b; }
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class Exception : public std::exception {
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public:
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Exception(const QString &msg, bool isFatal = true) : _fatal(isFatal), _msg(msg.toUtf8()) {
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LOG(("Exception: %1").arg(msg));
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}
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bool fatal() const {
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return _fatal;
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}
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virtual const char *what() const throw() {
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return _msg.constData();
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}
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virtual ~Exception() throw() {
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}
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private:
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bool _fatal;
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QByteArray _msg;
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};
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class MTPint;
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using TimeId = int32;
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TimeId myunixtime();
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void unixtimeInit();
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void unixtimeSet(TimeId servertime, bool force = false);
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TimeId unixtime();
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TimeId fromServerTime(const MTPint &serverTime);
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void toServerTime(const TimeId &clientTime, MTPint &outServerTime);
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uint64 msgid();
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int32 reqid();
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inline QDateTime date(int32 time = -1) {
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QDateTime result;
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if (time >= 0) result.setTime_t(time);
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return result;
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}
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inline QDateTime dateFromServerTime(const MTPint &time) {
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return date(fromServerTime(time));
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}
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inline QDateTime date(const MTPint &time) {
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return dateFromServerTime(time);
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}
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QDateTime dateFromServerTime(TimeId time);
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inline void mylocaltime(struct tm * _Tm, const time_t * _Time) {
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#ifdef Q_OS_WIN
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localtime_s(_Tm, _Time);
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#else
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localtime_r(_Time, _Tm);
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#endif
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}
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namespace ThirdParty {
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void start();
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void finish();
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}
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using TimeMs = int64;
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bool checkms(); // returns true if time has changed
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TimeMs getms(bool checked = false);
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const static uint32 _md5_block_size = 64;
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class HashMd5 {
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public:
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HashMd5(const void *input = 0, uint32 length = 0);
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void feed(const void *input, uint32 length);
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int32 *result();
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private:
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void init();
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void finalize();
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void transform(const uchar *block);
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bool _finalized;
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uchar _buffer[_md5_block_size];
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uint32 _count[2];
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uint32 _state[4];
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uchar _digest[16];
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};
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int32 hashCrc32(const void *data, uint32 len);
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int32 *hashSha1(const void *data, uint32 len, void *dest); // dest - ptr to 20 bytes, returns (int32*)dest
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inline std::array<char, 20> hashSha1(const void *data, int len) {
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auto result = std::array<char, 20>();
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hashSha1(data, len, result.data());
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return result;
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}
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int32 *hashSha256(const void *data, uint32 len, void *dest); // dest - ptr to 32 bytes, returns (int32*)dest
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inline std::array<char, 32> hashSha256(const void *data, int size) {
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auto result = std::array<char, 32>();
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hashSha1(data, size, result.data());
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return result;
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}
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int32 *hashMd5(const void *data, uint32 len, void *dest); // dest = ptr to 16 bytes, returns (int32*)dest
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inline std::array<char, 16> hashMd5(const void *data, int size) {
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auto result = std::array<char, 16>();
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hashMd5(data, size, result.data());
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return result;
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}
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char *hashMd5Hex(const int32 *hashmd5, void *dest); // dest = ptr to 32 bytes, returns (char*)dest
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inline char *hashMd5Hex(const void *data, uint32 len, void *dest) { // dest = ptr to 32 bytes, returns (char*)dest
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return hashMd5Hex(HashMd5(data, len).result(), dest);
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}
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inline std::array<char, 32> hashMd5Hex(const void *data, int size) {
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auto result = std::array<char, 32>();
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hashMd5Hex(data, size, result.data());
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return result;
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}
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// good random (using openssl implementation)
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void memset_rand(void *data, uint32 len);
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template <typename T>
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T rand_value() {
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T result;
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memset_rand(&result, sizeof(result));
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return result;
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}
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inline void memset_rand_bad(void *data, uint32 len) {
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for (uchar *i = reinterpret_cast<uchar*>(data), *e = i + len; i != e; ++i) {
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*i = uchar(rand() & 0xFF);
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}
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}
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template <typename T>
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inline void memsetrnd_bad(T &value) {
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memset_rand_bad(&value, sizeof(value));
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}
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class ReadLockerAttempt {
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public:
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ReadLockerAttempt(QReadWriteLock *_lock) : success(_lock->tryLockForRead()), lock(_lock) {
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}
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~ReadLockerAttempt() {
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if (success) {
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lock->unlock();
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}
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}
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operator bool() const {
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return success;
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}
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private:
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bool success;
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QReadWriteLock *lock;
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};
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inline QString fromUtf8Safe(const char *str, int32 size = -1) {
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if (!str || !size) return QString();
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if (size < 0) size = int32(strlen(str));
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QString result(QString::fromUtf8(str, size));
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QByteArray back = result.toUtf8();
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if (back.size() != size || memcmp(back.constData(), str, size)) return QString::fromLocal8Bit(str, size);
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return result;
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}
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inline QString fromUtf8Safe(const QByteArray &str) {
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return fromUtf8Safe(str.constData(), str.size());
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}
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static const QRegularExpression::PatternOptions reMultiline(QRegularExpression::DotMatchesEverythingOption | QRegularExpression::MultilineOption);
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template <typename T>
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inline T snap(const T &v, const T &_min, const T &_max) {
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return (v < _min) ? _min : ((v > _max) ? _max : v);
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}
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template <typename T>
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class ManagedPtr {
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public:
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ManagedPtr() = default;
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ManagedPtr(T *p) : _data(p) {
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}
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T *operator->() const {
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return _data;
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}
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T *v() const {
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return _data;
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}
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explicit operator bool() const {
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return _data != nullptr;
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}
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protected:
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using Parent = ManagedPtr<T>;
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T *_data = nullptr;
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};
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QString translitRusEng(const QString &rus);
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QString rusKeyboardLayoutSwitch(const QString &from);
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enum DBISendKey {
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dbiskEnter = 0,
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dbiskCtrlEnter = 1,
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};
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enum DBINotifyView {
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dbinvShowPreview = 0,
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dbinvShowName = 1,
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dbinvShowNothing = 2,
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};
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enum DBIWorkMode {
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dbiwmWindowAndTray = 0,
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dbiwmTrayOnly = 1,
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dbiwmWindowOnly = 2,
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};
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enum DBIConnectionType {
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dbictAuto = 0,
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dbictHttpAuto = 1, // not used
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dbictHttpProxy = 2,
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dbictTcpProxy = 3,
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};
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struct ProxyData {
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QString host;
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uint32 port = 0;
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QString user, password;
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};
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enum DBIScale {
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dbisAuto = 0,
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dbisOne = 1,
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dbisOneAndQuarter = 2,
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dbisOneAndHalf = 3,
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dbisTwo = 4,
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dbisScaleCount = 5,
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};
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static const int MatrixRowShift = 40000;
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enum DBIEmojiTab {
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dbietRecent = -1,
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dbietPeople = 0,
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dbietNature = 1,
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dbietFood = 2,
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dbietActivity = 3,
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dbietTravel = 4,
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dbietObjects = 5,
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dbietSymbols = 6,
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dbietStickers = 666,
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};
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static const int emojiTabCount = 8;
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inline DBIEmojiTab emojiTabAtIndex(int index) {
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return (index < 0 || index >= emojiTabCount) ? dbietRecent : DBIEmojiTab(index - 1);
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}
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enum DBIPlatform {
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dbipWindows = 0,
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dbipMac = 1,
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dbipLinux64 = 2,
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dbipLinux32 = 3,
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dbipMacOld = 4,
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};
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enum DBIPeerReportSpamStatus {
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|
dbiprsNoButton = 0, // hidden, but not in the cloud settings yet
|
|
dbiprsUnknown = 1, // contacts not loaded yet
|
|
dbiprsShowButton = 2, // show report spam button, each show peer request setting from cloud
|
|
dbiprsReportSent = 3, // report sent, but the report spam panel is not hidden yet
|
|
dbiprsHidden = 4, // hidden in the cloud or not needed (bots, contacts, etc), no more requests
|
|
dbiprsRequesting = 5, // requesting the cloud setting right now
|
|
};
|
|
|
|
template <int Size>
|
|
inline QString strMakeFromLetters(const uint32 (&letters)[Size]) {
|
|
QString result;
|
|
result.reserve(Size);
|
|
for (int32 i = 0; i < Size; ++i) {
|
|
result.push_back(QChar((((letters[i] >> 16) & 0xFF) << 8) | (letters[i] & 0xFF)));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
class MimeType {
|
|
public:
|
|
enum class Known {
|
|
Unknown,
|
|
TDesktopTheme,
|
|
TDesktopPalette,
|
|
WebP,
|
|
};
|
|
|
|
MimeType(const QMimeType &type) : _typeStruct(type) {
|
|
}
|
|
MimeType(Known type) : _type(type) {
|
|
}
|
|
QStringList globPatterns() const;
|
|
QString filterString() const;
|
|
QString name() const;
|
|
|
|
private:
|
|
QMimeType _typeStruct;
|
|
Known _type = Known::Unknown;
|
|
|
|
};
|
|
|
|
MimeType mimeTypeForName(const QString &mime);
|
|
MimeType mimeTypeForFile(const QFileInfo &file);
|
|
MimeType mimeTypeForData(const QByteArray &data);
|
|
|
|
#include <cmath>
|
|
|
|
inline int rowscount(int fullCount, int countPerRow) {
|
|
return (fullCount + countPerRow - 1) / countPerRow;
|
|
}
|
|
inline int floorclamp(int value, int step, int lowest, int highest) {
|
|
return qMin(qMax(value / step, lowest), highest);
|
|
}
|
|
inline int floorclamp(float64 value, int step, int lowest, int highest) {
|
|
return qMin(qMax(static_cast<int>(std::floor(value / step)), lowest), highest);
|
|
}
|
|
inline int ceilclamp(int value, int step, int lowest, int highest) {
|
|
return qMax(qMin((value + step - 1) / step, highest), lowest);
|
|
}
|
|
inline int ceilclamp(float64 value, int32 step, int32 lowest, int32 highest) {
|
|
return qMax(qMin(static_cast<int>(std::ceil(value / step)), highest), lowest);
|
|
}
|
|
|
|
enum ForwardWhatMessages {
|
|
ForwardSelectedMessages,
|
|
ForwardContextMessage,
|
|
ForwardPressedMessage,
|
|
ForwardPressedLinkMessage
|
|
};
|
|
|
|
enum ShowLayerOption {
|
|
CloseOtherLayers = 0x00,
|
|
KeepOtherLayers = 0x01,
|
|
ShowAfterOtherLayers = 0x03,
|
|
|
|
AnimatedShowLayer = 0x00,
|
|
ForceFastShowLayer = 0x04,
|
|
};
|
|
Q_DECLARE_FLAGS(ShowLayerOptions, ShowLayerOption);
|
|
Q_DECLARE_OPERATORS_FOR_FLAGS(ShowLayerOptions);
|
|
|
|
static int32 FullArcLength = 360 * 16;
|
|
static int32 QuarterArcLength = (FullArcLength / 4);
|
|
static int32 MinArcLength = (FullArcLength / 360);
|
|
static int32 AlmostFullArcLength = (FullArcLength - MinArcLength);
|
|
|
|
template <typename T, typename... Args>
|
|
inline QSharedPointer<T> MakeShared(Args&&... args) {
|
|
return QSharedPointer<T>(new T(std::forward<Args>(args)...));
|
|
}
|
|
|
|
// This pointer is used for global non-POD variables that are allocated
|
|
// on demand by createIfNull(lambda) and are never automatically freed.
|
|
template <typename T>
|
|
class NeverFreedPointer {
|
|
public:
|
|
NeverFreedPointer() = default;
|
|
NeverFreedPointer(const NeverFreedPointer<T> &other) = delete;
|
|
NeverFreedPointer &operator=(const NeverFreedPointer<T> &other) = delete;
|
|
|
|
template <typename... Args>
|
|
void createIfNull(Args&&... args) {
|
|
if (isNull()) {
|
|
reset(new T(std::forward<Args>(args)...));
|
|
}
|
|
};
|
|
|
|
T *data() const {
|
|
return _p;
|
|
}
|
|
T *release() {
|
|
return base::take(_p);
|
|
}
|
|
void reset(T *p = nullptr) {
|
|
delete _p;
|
|
_p = p;
|
|
}
|
|
bool isNull() const {
|
|
return data() == nullptr;
|
|
}
|
|
|
|
void clear() {
|
|
reset();
|
|
}
|
|
T *operator->() const {
|
|
return data();
|
|
}
|
|
T &operator*() const {
|
|
t_assert(!isNull());
|
|
return *data();
|
|
}
|
|
explicit operator bool() const {
|
|
return !isNull();
|
|
}
|
|
|
|
private:
|
|
T *_p;
|
|
|
|
};
|
|
|
|
// This pointer is used for static non-POD variables that are allocated
|
|
// on first use by constructor and are never automatically freed.
|
|
template <typename T>
|
|
class StaticNeverFreedPointer {
|
|
public:
|
|
explicit StaticNeverFreedPointer(T *p) : _p(p) {
|
|
}
|
|
StaticNeverFreedPointer(const StaticNeverFreedPointer<T> &other) = delete;
|
|
StaticNeverFreedPointer &operator=(const StaticNeverFreedPointer<T> &other) = delete;
|
|
|
|
T *data() const {
|
|
return _p;
|
|
}
|
|
T *release() {
|
|
return base::take(_p);
|
|
}
|
|
void reset(T *p = nullptr) {
|
|
delete _p;
|
|
_p = p;
|
|
}
|
|
bool isNull() const {
|
|
return data() == nullptr;
|
|
}
|
|
|
|
void clear() {
|
|
reset();
|
|
}
|
|
T *operator->() const {
|
|
return data();
|
|
}
|
|
T &operator*() const {
|
|
t_assert(!isNull());
|
|
return *data();
|
|
}
|
|
explicit operator bool() const {
|
|
return !isNull();
|
|
}
|
|
|
|
private:
|
|
T *_p = nullptr;
|
|
|
|
};
|