Add support of zip archived components

external/miniz/LICENSE

@@ -0,0 +1,22 @@
+Copyright 2013-2014 RAD Game Tools and Valve Software
+Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
+
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

screen-translator.pro

@@ -18,6 +18,9 @@ linux{
   LIBS += -lX11
 }
 
+SOURCES += $$PWD/external/miniz/miniz.c
+INCLUDEPATH += $$PWD/external
+
 VER=3.0.0
 DEFINES += VERSION="$$VER"
 VERSION = $$VER.0

src/service/updates.cpp

@@ -10,6 +10,7 @@
 #include <QJsonObject>
 #include <QMenu>
 #include <QNetworkReply>
+#include <QScopeGuard>
 #include <QSortFilterProxyModel>
 #include <QStandardPaths>
 #include <QTimer>
@@ -17,6 +18,56 @@
 
 #include <random>
 
+#define MINIZ_NO_ZLIB_APIS
+#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES
+#define MINIZ_NO_MALLOC
+#define MINIZ_NO_STDIO
+#define MINIZ_NO_ARCHIVE_WRITING_APIS
+#include <miniz/miniz.h>
+
+static QByteArray unpack(const QByteArray &data)
+{
+  if (data.size() <= 4 || data.left(2) != "PK") {
+    LTRACE() << "Incorrect data to unpack" << LARG(data.size())
+             << data.left(10);
+    return {};
+  }
+
+  mz_zip_archive zip;
+  memset(&zip, 0, sizeof(zip));
+  if (!mz_zip_reader_init_mem(&zip, data.data(), data.size(), 0)) {
+    LTRACE() << "Failed to init zip reader for " << data.left(10)
+             << mz_zip_get_error_string(zip.m_last_error);
+    return {};
+  }
+
+  const auto guard = qScopeGuard([&zip] { mz_zip_reader_end(&zip); });
+
+  const auto fileCount = mz_zip_reader_get_num_files(&zip);
+  if (fileCount < 1) {
+    LTRACE() << "No files in zip archive";
+    return {};
+  }
+
+  for (auto i = 0u; i < fileCount; ++i) {
+    mz_zip_archive_file_stat file_stat;
+    if (!mz_zip_reader_file_stat(&zip, i, &file_stat)) {
+      LTRACE() << "Failed to get file info" << LARG(i)
+               << mz_zip_get_error_string(zip.m_last_error);
+      return {};
+    }
+
+    if (file_stat.m_is_directory)
+      continue;
+
+    QByteArray result(file_stat.m_uncomp_size, 0);
+    mz_zip_reader_extract_to_mem(&zip, 0, result.data(), result.size(), 0);
+    return result;
+  }
+
+  return {};
+}
+
 namespace update
 {
 namespace
@@ -150,27 +201,36 @@ void Loader::handleUpdateReply(QNetworkReply *reply)
 {
   reply->deleteLater();
 
+  const auto url = reply->url();
   if (reply->error() != QNetworkReply::NoError) {
     emit error(toError(*reply));
-    startDownloadUpdates(reply->url());
+    startDownloadUpdates(url);
     return;
   }
 
   const auto replyData = reply->readAll();
   if (replyData.isEmpty()) {
-    emit error(
-        tr("Received empty updates info from %1").arg(reply->url().toString()));
-    startDownloadUpdates(reply->url());
+    emit error(tr("Received empty updates info from %1").arg(url.toString()));
+    startDownloadUpdates(url);
     return;
   }
 
+  const auto unpacked =
+      url.toString().endsWith(".zip") ? unpack(replyData) : replyData;
+
+  if (unpacked.isEmpty()) {
+    emit error(
+        tr("Empty updates info after unpacking from %1").arg(url.toString()));
+    startDownloadUpdates(url);
+    return;
+  }
 
   SOFT_ASSERT(model_, return );
-  const auto parseError = model_->parse(replyData);
+  const auto parseError = model_->parse(unpacked);
   if (!parseError.isEmpty()) {
     emit error(tr("Failed to parse updates from %1 (%2)")
-                   .arg(reply->url().toString(), parseError));
-    startDownloadUpdates(reply->url());
+                   .arg(url.toString(), parseError));
+    startDownloadUpdates(url);
     return;
   }
 
@@ -258,20 +318,44 @@ bool Loader::handleComponentReply(QNetworkReply *reply)
 
   const auto &fileName = file->downloadPath;
   auto dir = QFileInfo(fileName).absoluteDir();
-  if (!dir.exists())
-    dir.mkpath(".");
+  if (!dir.exists() && !dir.mkpath(".")) {
+    finishUpdate(tr("Failed to create temp path %1").arg(dir.absolutePath()));
+    return false;
+  }
+
+  const auto url = reply->url();
+  const auto replyData = reply->readAll();
+  if (replyData.isEmpty()) {
+    emit error(tr("Empty data downloaded from %1").arg(url.toString()));
+
+    if (!startDownload(*file))
+      finishUpdate();
+
+    return false;
+  }
+
+  const auto mustUnpack =
+      url.toString().endsWith(".zip") && !fileName.endsWith(".zip");
+  const auto unpacked = mustUnpack ? unpack(replyData) : replyData;
+
+  if (unpacked.isEmpty()) {
+    emit error(tr("Empty data after unpacking from %1").arg(url.toString()));
+
+    if (!startDownload(*file))
+      finishUpdate();
+
+    return false;
+  }
 
   QFile f(fileName);
   if (!f.open(QFile::WriteOnly)) {
-    const auto error =
-        tr("Failed to save downloaded file %1 to %2. Error %3")
-            .arg(reply->url().toString(), f.fileName(), f.errorString());
+    const auto error = tr("Failed to save downloaded file %1 to %2. Error %3")
+                           .arg(url.toString(), f.fileName(), f.errorString());
     finishUpdate(error);
     return false;
   }
 
-  const auto replyData = reply->readAll();
-  f.write(replyData);
+  f.write(unpacked);
   f.close();
 
   if (downloads_.empty())