tdlight/td/telegram/Photo.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/telegram/Photo.h"
#include "td/telegram/secret_api.h"
#include "td/telegram/telegram_api.h"
#include "td/telegram/files/FileManager.h"
#include "td/telegram/Global.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/HttpUrl.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/Random.h"
#include <algorithm>
#include <limits>
namespace td {
static uint16 get_dimension(int32 size) {
if (size < 0 || size > 65535) {
LOG(ERROR) << "Wrong image dimension = " << size;
return 0;
}
return narrow_cast<uint16>(size);
}
Dimensions get_dimensions(int32 width, int32 height) {
Dimensions result;
result.width = get_dimension(width);
result.height = get_dimension(height);
if (result.width == 0 || result.height == 0) {
result.width = 0;
result.height = 0;
}
return result;
}
bool operator==(const Dimensions &lhs, const Dimensions &rhs) {
return lhs.width == rhs.width && lhs.height == rhs.height;
}
bool operator!=(const Dimensions &lhs, const Dimensions &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const Dimensions &dimensions) {
return string_builder << "(" << dimensions.width << ", " << dimensions.height << ")";
}
static FileId register_photo(FileManager *file_manager, FileType file_type, int64 id, int64 access_hash,
tl_object_ptr<telegram_api::FileLocation> &&location_ptr, DialogId owner_dialog_id,
int32 file_size) {
int32 location_id = location_ptr->get_id();
DcId dc_id;
int32 local_id;
int64 volume_id;
int64 secret;
switch (location_id) {
case telegram_api::fileLocationUnavailable::ID: {
auto location = move_tl_object_as<telegram_api::fileLocationUnavailable>(location_ptr);
dc_id = DcId::invalid();
local_id = location->local_id_;
volume_id = location->volume_id_;
secret = location->secret_;
break;
}
case telegram_api::fileLocation::ID: {
auto location = move_tl_object_as<telegram_api::fileLocation>(location_ptr);
if (!DcId::is_valid(location->dc_id_)) {
dc_id = DcId::invalid();
} else {
dc_id = DcId::internal(location->dc_id_);
}
local_id = location->local_id_;
volume_id = location->volume_id_;
secret = location->secret_;
break;
}
default:
UNREACHABLE();
break;
}
LOG(DEBUG) << "Receive photo of type " << static_cast<int8>(file_type) << " in [" << dc_id << "," << volume_id << ","
<< local_id << "]. Id: (" << id << ", " << access_hash << ")";
auto suggested_name = PSTRING() << static_cast<uint64>(volume_id) << "_" << static_cast<uint64>(local_id) << ".jpg";
return file_manager->register_remote(
FullRemoteFileLocation(file_type, id, access_hash, local_id, volume_id, secret, dc_id),
FileLocationSource::FromServer, owner_dialog_id, file_size, 0, std::move(suggested_name));
}
ProfilePhoto get_profile_photo(FileManager *file_manager,
tl_object_ptr<telegram_api::UserProfilePhoto> &&profile_photo_ptr) {
ProfilePhoto result;
int32 profile_photo_id =
profile_photo_ptr == nullptr ? telegram_api::userProfilePhotoEmpty::ID : profile_photo_ptr->get_id();
switch (profile_photo_id) {
case telegram_api::userProfilePhotoEmpty::ID:
break;
case telegram_api::userProfilePhoto::ID: {
auto profile_photo = move_tl_object_as<telegram_api::userProfilePhoto>(profile_photo_ptr);
result.id = profile_photo->photo_id_;
result.small_file_id = register_photo(file_manager, FileType::ProfilePhoto, result.id, 0,
std::move(profile_photo->photo_small_), DialogId(), 0);
result.big_file_id = register_photo(file_manager, FileType::ProfilePhoto, result.id, 0,
std::move(profile_photo->photo_big_), DialogId(), 0);
break;
}
default:
UNREACHABLE();
break;
}
return result;
}
tl_object_ptr<td_api::profilePhoto> get_profile_photo_object(FileManager *file_manager,
const ProfilePhoto *profile_photo) {
if (profile_photo == nullptr || !profile_photo->small_file_id.is_valid()) {
return nullptr;
}
return make_tl_object<td_api::profilePhoto>(profile_photo->id,
file_manager->get_file_object(profile_photo->small_file_id),
file_manager->get_file_object(profile_photo->big_file_id));
}
bool operator==(const ProfilePhoto &lhs, const ProfilePhoto &rhs) {
bool location_differs = lhs.small_file_id != rhs.small_file_id || lhs.big_file_id != rhs.big_file_id;
bool id_differs;
if (lhs.id == -1 && rhs.id == -1) {
// group chat photo
id_differs = location_differs;
} else {
id_differs = lhs.id != rhs.id;
}
if (location_differs) {
LOG_IF(ERROR, !id_differs) << "location_differs = true, but id_differs = false. First profilePhoto: " << lhs
<< ", second profilePhoto: " << rhs;
return false;
}
return true;
}
bool operator!=(const ProfilePhoto &lhs, const ProfilePhoto &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const ProfilePhoto &profile_photo) {
return string_builder << "<id = " << profile_photo.id << ", small_file_id = " << profile_photo.small_file_id
<< ", big_file_id = " << profile_photo.big_file_id << ">";
}
DialogPhoto get_dialog_photo(FileManager *file_manager, tl_object_ptr<telegram_api::ChatPhoto> &&chat_photo_ptr) {
int32 chat_photo_id = chat_photo_ptr == nullptr ? telegram_api::chatPhotoEmpty::ID : chat_photo_ptr->get_id();
DialogPhoto result;
switch (chat_photo_id) {
case telegram_api::chatPhotoEmpty::ID:
break;
case telegram_api::chatPhoto::ID: {
auto chat_photo = move_tl_object_as<telegram_api::chatPhoto>(chat_photo_ptr);
result.small_file_id = register_photo(file_manager, FileType::ProfilePhoto, 0, 0,
std::move(chat_photo->photo_small_), DialogId(), 0);
result.big_file_id =
register_photo(file_manager, FileType::ProfilePhoto, 0, 0, std::move(chat_photo->photo_big_), DialogId(), 0);
break;
}
default:
UNREACHABLE();
break;
}
return result;
}
tl_object_ptr<td_api::chatPhoto> get_chat_photo_object(FileManager *file_manager, const DialogPhoto *dialog_photo) {
if (dialog_photo == nullptr || !dialog_photo->small_file_id.is_valid()) {
return nullptr;
}
return make_tl_object<td_api::chatPhoto>(file_manager->get_file_object(dialog_photo->small_file_id),
file_manager->get_file_object(dialog_photo->big_file_id));
}
bool operator==(const DialogPhoto &lhs, const DialogPhoto &rhs) {
return lhs.small_file_id == rhs.small_file_id && lhs.big_file_id == rhs.big_file_id;
}
bool operator!=(const DialogPhoto &lhs, const DialogPhoto &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const DialogPhoto &dialog_photo) {
return string_builder << "<small_file_id = " << dialog_photo.small_file_id
<< ", big_file_id = " << dialog_photo.big_file_id << ">";
}
PhotoSize get_thumbnail_photo_size(FileManager *file_manager, BufferSlice bytes, DialogId owner_dialog_id, int32 width,
int32 height) {
if (bytes.empty()) {
return PhotoSize();
}
PhotoSize res;
res.type = 't';
res.dimensions = get_dimensions(width, height);
res.size = narrow_cast<int32>(bytes.size());
// generate some random remote location to save
auto dc_id = DcId::invalid();
auto local_id = Random::secure_int32();
auto volume_id = Random::secure_int64();
auto secret = 0;
res.file_id = file_manager->register_remote(
FullRemoteFileLocation(FileType::EncryptedThumbnail, 0, 0, local_id, volume_id, secret, dc_id),
FileLocationSource::FromServer, owner_dialog_id, res.size, 0,
PSTRING() << static_cast<uint64>(volume_id) << "_" << static_cast<uint64>(local_id) << ".jpg");
file_manager->set_content(res.file_id, std::move(bytes));
return res;
}
PhotoSize get_photo_size(FileManager *file_manager, FileType file_type, int64 id, int64 access_hash,
DialogId owner_dialog_id, tl_object_ptr<telegram_api::PhotoSize> &&size_ptr) {
tl_object_ptr<telegram_api::FileLocation> location_ptr;
string type;
PhotoSize res;
BufferSlice content;
int32 size_id = size_ptr->get_id();
switch (size_id) {
case telegram_api::photoSizeEmpty::ID:
return res;
case telegram_api::photoSize::ID: {
auto size = move_tl_object_as<telegram_api::photoSize>(size_ptr);
type = std::move(size->type_);
location_ptr = std::move(size->location_);
res.dimensions = get_dimensions(size->w_, size->h_);
res.size = size->size_;
break;
}
case telegram_api::photoCachedSize::ID: {
auto size = move_tl_object_as<telegram_api::photoCachedSize>(size_ptr);
type = std::move(size->type_);
location_ptr = std::move(size->location_);
CHECK(size->bytes_.size() <= static_cast<size_t>(std::numeric_limits<int32>::max()));
res.dimensions = get_dimensions(size->w_, size->h_);
res.size = static_cast<int32>(size->bytes_.size());
content = std::move(size->bytes_);
break;
}
default:
UNREACHABLE();
break;
}
res.file_id =
register_photo(file_manager, file_type, id, access_hash, std::move(location_ptr), owner_dialog_id, res.size);
if (!content.empty()) {
file_manager->set_content(res.file_id, std::move(content));
}
if (type.size() != 1) {
res.type = 0;
LOG(ERROR) << "Wrong photoSize " << res;
} else {
res.type = static_cast<int32>(type[0]);
}
return res;
}
PhotoSize get_web_document_photo_size(FileManager *file_manager, FileType file_type, DialogId owner_dialog_id,
tl_object_ptr<telegram_api::WebDocument> web_document_ptr) {
if (web_document_ptr == nullptr) {
return {};
}
FileId file_id;
vector<tl_object_ptr<telegram_api::DocumentAttribute>> attributes;
int32 size = 0;
switch (web_document_ptr->get_id()) {
case telegram_api::webDocument::ID: {
auto web_document = move_tl_object_as<telegram_api::webDocument>(web_document_ptr);
if (!DcId::is_valid(web_document->dc_id_)) {
LOG(ERROR) << "Wrong dc_id = " << web_document->dc_id_;
return {};
}
auto r_http_url = parse_url(web_document->url_);
if (r_http_url.is_error()) {
LOG(ERROR) << "Can't parse URL " << web_document->url_;
return {};
}
auto http_url = r_http_url.move_as_ok();
auto url = http_url.get_url();
file_id = file_manager->register_remote(
FullRemoteFileLocation(file_type, url, web_document->access_hash_, DcId::internal(web_document->dc_id_)),
FileLocationSource::FromServer, owner_dialog_id, 0, web_document->size_,
get_url_query_file_name(http_url.query_));
size = web_document->size_;
attributes = std::move(web_document->attributes_);
break;
}
case telegram_api::webDocumentNoProxy::ID: {
auto web_document = move_tl_object_as<telegram_api::webDocumentNoProxy>(web_document_ptr);
if (web_document->url_.find('.') == string::npos) {
LOG(ERROR) << "Receive invalid URL " << web_document->url_;
return {};
}
auto r_file_id = file_manager->from_persistent_id(web_document->url_, file_type);
if (r_file_id.is_error()) {
LOG(ERROR) << "Can't register URL: " << r_file_id.error();
return {};
}
file_id = r_file_id.move_as_ok();
size = web_document->size_;
attributes = std::move(web_document->attributes_);
break;
}
default:
UNREACHABLE();
}
CHECK(file_id.is_valid());
Dimensions dimensions;
for (auto &attribute : attributes) {
switch (attribute->get_id()) {
case telegram_api::documentAttributeImageSize::ID: {
auto image_size = move_tl_object_as<telegram_api::documentAttributeImageSize>(attribute);
dimensions = get_dimensions(image_size->w_, image_size->h_);
break;
}
case telegram_api::documentAttributeAnimated::ID:
case telegram_api::documentAttributeHasStickers::ID:
case telegram_api::documentAttributeSticker::ID:
case telegram_api::documentAttributeVideo::ID:
case telegram_api::documentAttributeAudio::ID:
LOG(ERROR) << "Unexpected web document attribute " << to_string(attribute);
break;
case telegram_api::documentAttributeFilename::ID:
break;
default:
UNREACHABLE();
}
}
PhotoSize s;
s.type = file_type == FileType::Thumbnail ? 't' : 'u';
s.dimensions = dimensions;
s.size = size;
s.file_id = file_id;
return s;
}
tl_object_ptr<td_api::photoSize> get_photo_size_object(FileManager *file_manager, const PhotoSize *photo_size) {
if (photo_size == nullptr || !photo_size->file_id.is_valid()) {
return nullptr;
}
return make_tl_object<td_api::photoSize>(
photo_size->type ? std::string(1, static_cast<char>(photo_size->type))
: std::string(), // TODO replace string type with integer type
file_manager->get_file_object(photo_size->file_id), photo_size->dimensions.width, photo_size->dimensions.height);
}
void sort_photo_sizes(vector<td_api::object_ptr<td_api::photoSize>> &sizes) {
std::sort(sizes.begin(), sizes.end(), [](const auto &lhs, const auto &rhs) {
if (lhs->photo_->expected_size_ != rhs->photo_->expected_size_) {
return lhs->photo_->expected_size_ < rhs->photo_->expected_size_;
}
return lhs->width_ * lhs->height_ < rhs->width_ * rhs->height_;
});
}
bool operator==(const PhotoSize &lhs, const PhotoSize &rhs) {
return lhs.type == rhs.type && lhs.dimensions == rhs.dimensions && lhs.size == rhs.size && lhs.file_id == rhs.file_id;
}
bool operator!=(const PhotoSize &lhs, const PhotoSize &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const PhotoSize &photo_size) {
return string_builder << "{type = " << photo_size.type << ", dimensions = " << photo_size.dimensions
<< ", size = " << photo_size.size << ", file_id = " << photo_size.file_id << "}";
}
Photo get_photo(FileManager *file_manager, tl_object_ptr<telegram_api::encryptedFile> &&file,
tl_object_ptr<secret_api::decryptedMessageMediaPhoto> &&photo, DialogId owner_dialog_id) {
CHECK(DcId::is_valid(file->dc_id_));
FileId file_id = file_manager->register_remote(
FullRemoteFileLocation(FileType::Encrypted, file->id_, file->access_hash_, DcId::internal(file->dc_id_)),
FileLocationSource::FromServer, owner_dialog_id, photo->size_, 0,
PSTRING() << static_cast<uint64>(file->id_) << ".jpg");
file_manager->set_encryption_key(file_id, FileEncryptionKey{photo->key_.as_slice(), photo->iv_.as_slice()});
Photo res;
res.date = 0;
if (!photo->thumb_.empty()) {
res.photos.push_back(get_thumbnail_photo_size(file_manager, std::move(photo->thumb_), owner_dialog_id,
photo->thumb_w_, photo->thumb_h_));
}
PhotoSize s;
s.type = 'i';
s.dimensions = get_dimensions(photo->w_, photo->h_);
s.size = photo->size_;
s.file_id = file_id;
res.photos.push_back(s);
return res;
}
Photo get_photo(FileManager *file_manager, tl_object_ptr<telegram_api::photo> &&photo, DialogId owner_dialog_id) {
Photo res;
res.id = photo->id_;
res.date = photo->date_;
res.has_stickers = (photo->flags_ & telegram_api::photo::HAS_STICKERS_MASK) != 0;
for (auto &size_ptr : photo->sizes_) {
res.photos.push_back(get_photo_size(file_manager, FileType::Photo, photo->id_, photo->access_hash_, owner_dialog_id,
std::move(size_ptr)));
}
return res;
}
tl_object_ptr<td_api::photo> get_photo_object(FileManager *file_manager, const Photo *photo) {
if (photo == nullptr || photo->id == -2) {
return nullptr;
}
vector<td_api::object_ptr<td_api::photoSize>> photos;
for (auto &photo_size : photo->photos) {
photos.push_back(get_photo_size_object(file_manager, &photo_size));
}
sort_photo_sizes(photos);
return make_tl_object<td_api::photo>(photo->id, photo->has_stickers, std::move(photos));
}
void photo_delete_thumbnail(Photo &photo) {
for (size_t i = 0; i < photo.photos.size(); i++) {
if (photo.photos[i].type == 't') {
photo.photos.erase(photo.photos.begin() + i);
}
}
}
bool photo_has_input_media(FileManager *file_manager, const Photo &photo, bool is_secret) {
if (photo.photos.empty() || photo.photos.back().type != 'i') {
LOG(ERROR) << "Wrong photo: " << photo;
return false;
}
auto file_id = photo.photos.back().file_id;
auto file_view = file_manager->get_file_view(file_id);
if (is_secret) {
if (file_view.encryption_key().empty() || !file_view.has_remote_location()) {
return false;
}
for (const auto &size : photo.photos) {
if (size.type == 't' && size.file_id.is_valid()) {
return false;
}
}
return true;
} else {
if (file_view.is_encrypted()) {
return false;
}
return file_view.has_remote_location() || file_view.has_url();
}
}
tl_object_ptr<telegram_api::InputMedia> photo_get_input_media(FileManager *file_manager, const Photo &photo,
tl_object_ptr<telegram_api::InputFile> input_file,
int32 ttl) {
if (!photo.photos.empty()) {
auto file_id = photo.photos.back().file_id;
auto file_view = file_manager->get_file_view(file_id);
if (file_view.is_encrypted()) {
return nullptr;
}
if (file_view.has_remote_location() && !file_view.remote_location().is_web()) {
int32 flags = 0;
if (ttl != 0) {
flags |= telegram_api::inputMediaPhoto::TTL_SECONDS_MASK;
}
return make_tl_object<telegram_api::inputMediaPhoto>(flags, file_view.remote_location().as_input_photo(), ttl);
}
if (file_view.has_url()) {
int32 flags = 0;
if (ttl != 0) {
flags |= telegram_api::inputMediaPhotoExternal::TTL_SECONDS_MASK;
}
LOG(INFO) << "Create inputMediaPhotoExternal with a URL " << file_view.url() << " and ttl " << ttl;
return make_tl_object<telegram_api::inputMediaPhotoExternal>(flags, file_view.url(), ttl);
}
CHECK(!file_view.has_remote_location());
}
if (input_file != nullptr) {
int32 flags = 0;
vector<tl_object_ptr<telegram_api::InputDocument>> added_stickers;
if (photo.has_stickers) {
flags |= telegram_api::inputMediaUploadedPhoto::STICKERS_MASK;
added_stickers = file_manager->get_input_documents(photo.sticker_file_ids);
}
if (ttl != 0) {
flags |= telegram_api::inputMediaUploadedPhoto::TTL_SECONDS_MASK;
}
return make_tl_object<telegram_api::inputMediaUploadedPhoto>(flags, std::move(input_file),
std::move(added_stickers), ttl);
}
return nullptr;
}
SecretInputMedia photo_get_secret_input_media(FileManager *file_manager, const Photo &photo,
tl_object_ptr<telegram_api::InputEncryptedFile> input_file,
const string &caption, BufferSlice thumbnail) {
FileId file_id;
int32 width = 0;
int32 height = 0;
FileId thumbnail_file_id;
int32 thumbnail_width = 0;
int32 thumbnail_height = 0;
for (const auto &size : photo.photos) {
if (size.type == 'i') {
file_id = size.file_id;
width = size.dimensions.width;
height = size.dimensions.height;
}
if (size.type == 't') {
thumbnail_file_id = size.file_id;
thumbnail_width = size.dimensions.width;
thumbnail_height = size.dimensions.height;
}
}
if (file_id.empty()) {
LOG(ERROR) << "NO SIZE";
return {};
}
auto file_view = file_manager->get_file_view(file_id);
auto &encryption_key = file_view.encryption_key();
if (encryption_key.empty()) {
return {};
}
if (file_view.has_remote_location()) {
LOG(INFO) << "HAS REMOTE LOCATION";
input_file = file_view.remote_location().as_input_encrypted_file();
}
if (input_file == nullptr) {
return {};
}
if (thumbnail_file_id.is_valid() && thumbnail.empty()) {
return {};
}
return SecretInputMedia{
std::move(input_file),
make_tl_object<secret_api::decryptedMessageMediaPhoto>(
std::move(thumbnail), thumbnail_width, thumbnail_height, width, height, narrow_cast<int32>(file_view.size()),
BufferSlice(encryption_key.key_slice()), BufferSlice(encryption_key.iv_slice()), caption)};
}
bool operator==(const Photo &lhs, const Photo &rhs) {
return lhs.id == rhs.id && lhs.photos == rhs.photos;
}
bool operator!=(const Photo &lhs, const Photo &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const Photo &photo) {
return string_builder << "[id = " << photo.id << ", photos = " << format::as_array(photo.photos) << "]";
}
} // namespace td