117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
#include "qtcommon.h"
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#include "extension.h"
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#include "network.h"
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#include <random>
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extern const wchar_t* TRANSLATION_ERROR;
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extern const char* USE_PREV_SENTENCE_CONTEXT;
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extern QSettings settings;
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extern QFormLayout* display;
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extern Synchronized<std::wstring> translateTo;
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const char* TRANSLATION_PROVIDER = "DeepL Translate";
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QStringList languages
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{
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"Chinese (simplified): ZH",
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"Dutch: NL",
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"English: EN",
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"French: FR",
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"German: DE",
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"Italian: IT",
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"Japanese: JA",
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"Polish: PL",
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"Portuguese: PT",
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"Russian: RU",
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"Spanish: ES",
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};
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bool translateSelectedOnly = true, rateLimitAll = true, rateLimitSelected = true, useCache = false;
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int tokenCount = 10, tokenRestoreDelay = 60000;
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const wchar_t* accept[] = { L"*/*", nullptr };
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Synchronized<std::wstring> LMTBID;
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bool useContext = true;
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Synchronized<std::unordered_map<int64_t, std::wstring>> context;
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BOOL WINAPI DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
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{
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switch (ul_reason_for_call)
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{
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case DLL_PROCESS_ATTACH:
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{
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auto checkbox = new QCheckBox;
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checkbox->setChecked(useContext);
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display->addRow(USE_PREV_SENTENCE_CONTEXT, checkbox);
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QObject::connect(checkbox, &QCheckBox::clicked, [](bool checked) { settings.setValue(USE_PREV_SENTENCE_CONTEXT, useContext = checked); });
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}
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break;
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case DLL_PROCESS_DETACH:
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{
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}
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break;
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}
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return TRUE;
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}
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std::pair<bool, std::wstring> Translate(const std::wstring& text, SentenceInfo sentenceInfo)
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{
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// the following code was reverse engineered from the DeepL website; it's as close as I could make it but I'm not sure what parts of this could be removed and still have it work
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int64_t r = _time64(nullptr), n = std::count(text.begin(), text.end(), L'i') + 1LL;
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static std::atomic<int> id = 10000 * std::uniform_int_distribution(0, 9999)(std::mt19937(std::random_device()()));
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std::string jsonText;
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for (auto ch : WideStringToString(text))
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if (ch == '"') jsonText += "\\\"";
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else jsonText += ch;
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// user_preferred_langs? what should preferred_num_beans and priority be? does timestamp do anything? other translation quality options?
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auto body = FormatString(R"(
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{
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"id": %d,
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"jsonrpc": "2.0",
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"method": "LMT_handle_jobs",
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"params": {
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"priority": -1,
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"timestamp": %lld,
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"lang": {
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"source_lang_user_selected": "auto",
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"target_lang": "%s"
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},
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"jobs": [{
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"kind": "default",
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"preferred_num_beams": 4,
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"quality": "fast",
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"raw_en_context_after": [],
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"raw_en_sentence": "%s",
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"raw_en_context_before": [%s]
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}]
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}
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}
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)", ++id, r + (n - r % n), WideStringToString(translateTo->c_str()), jsonText, useContext ? WideStringToString(context->operator[](sentenceInfo["text number"])) : "");
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context->insert_or_assign(sentenceInfo["text number"], L'"' + text + L'"');
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// missing accept-encoding header since it fucks up HttpRequest
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std::wstring headers = L"Host: www2.deepl.com\r\nAccept-Language: en-US,en;q=0.5\r\nContent-type: text/plain\r\nOrigin: https://www.deepl.com\r\nTE: Trailers" + LMTBID.Acquire().contents;
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if (HttpRequest httpRequest{
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L"Mozilla/5.0 Textractor",
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L"www2.deepl.com",
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L"POST",
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L"/jsonrpc",
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WINHTTP_FLAG_SECURE,
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NULL,
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L"https://www.deepl.com/translator",
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accept,
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headers.c_str(),
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body.data(),
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body.size()
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})
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{
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auto LMTBID = httpRequest.headers.find(L"LMTBID="), end = httpRequest.headers.find(L';', LMTBID); // not sure if this cookie does anything
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if (LMTBID != std::wstring::npos && end != std::wstring::npos) ::LMTBID->assign(L"\r\nCookie: " + httpRequest.headers.substr(LMTBID, end - LMTBID));
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// Response formatted as JSON: translation starts with preprocessed_sentence":" and ends with ","
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if (std::wsmatch results; std::regex_search(httpRequest.response, results, std::wregex(L"postprocessed_sentence\":\"(.+?)\",\""))) return { true, results[1] };
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else return { false, FormatString(L"%s: %s", TRANSLATION_ERROR, httpRequest.response) };
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}
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else return { false, FormatString(L"%s (code=%u)", TRANSLATION_ERROR, httpRequest.errorCode) };
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}
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