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Diffstat (limited to 'SwifTools/AutoUpdater/SparkleAutoUpdater.mm')
-rw-r--r--SwifTools/AutoUpdater/SparkleAutoUpdater.mm90
1 files changed, 89 insertions, 1 deletions
diff --git a/SwifTools/AutoUpdater/SparkleAutoUpdater.mm b/SwifTools/AutoUpdater/SparkleAutoUpdater.mm
index 4cf5837..b4a4c05 100644
--- a/SwifTools/AutoUpdater/SparkleAutoUpdater.mm
+++ b/SwifTools/AutoUpdater/SparkleAutoUpdater.mm
@@ -6,9 +6,15 @@
#include <SwifTools/AutoUpdater/SparkleAutoUpdater.h>
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+
#include <Cocoa/Cocoa.h>
#include <Sparkle/Sparkle.h>
+#include <Swiften/Base/Log.h>
+
#include <SwifTools/AutoUpdater/SparkleAutoUpdaterDelegate.h>
#include <SwifTools/Cocoa/CocoaUtil.h>
@@ -34,7 +40,13 @@ SparkleAutoUpdater::SparkleAutoUpdater(const std::string& appcastFeed) : d(new P
[d->updater setAutomaticallyChecksForUpdates: true];
// Automatically check for an update after a day.
[d->updater setUpdateCheckInterval: 86400];
- [d->updater setAutomaticallyDownloadsUpdates: true];
+
+ auto canDoSilentUpdates = applicationInstallationLocationWritable();
+ [d->updater setAutomaticallyDownloadsUpdates: canDoSilentUpdates];
+
+ SWIFT_LOG(debug) << (canDoSilentUpdates ?
+ "The current running user has enough permissions to do a silent update." :
+ "The current running user has insufficient permissions to do a silent update.") << std::endl;
setAppcastFeed(appcastFeed);
}
@@ -67,4 +79,80 @@ AutoUpdater::State SparkleAutoUpdater::getCurrentState() {
return d->currentState;
}
+bool Swift::SparkleAutoUpdater::applicationInstallationLocationWritable() {
+ auto bundlePath = ns2StdString([[NSBundle mainBundle] bundlePath]);
+
+ auto createTemporaryFile = [](const boost::filesystem::path& parentFolder) {
+ boost::optional<boost::filesystem::path> tempFilePath;
+ boost::system::error_code error;
+
+ if (!boost::filesystem::is_directory(parentFolder, error) || error) {
+ return tempFilePath;
+ }
+ auto uniquePath = boost::filesystem::unique_path("%%%%-%%%%-%%%%-%%%%", error);
+ if (error) {
+ return tempFilePath;
+ }
+ auto testFilePath = parentFolder / uniquePath;
+
+ boost::filesystem::ofstream testFile(testFilePath, std::ios::in | std::ios::out | std::ios::binary | std::ios::trunc);
+ if (testFile) {
+ testFile.close();
+ tempFilePath = testFilePath;
+ }
+
+ return tempFilePath;
+ };
+
+ auto isDirectoryWritable = [&](const boost::filesystem::path& path) {
+ auto bundleTestFilePath = createTemporaryFile(path);
+ if (!bundleTestFilePath) {
+ return false;
+ }
+
+ boost::system::error_code error;
+ if (!boost::filesystem::remove(bundleTestFilePath.get(), error) || error) {
+ // File did not exist in the first place or error while removing it.
+ return false;
+ }
+
+ return true;
+ };
+
+ auto applyMatchingPermissions = [](const boost::filesystem::path& permissionsFrom, const boost::filesystem::path& applyTo) {
+ auto permissions = boost::filesystem::status(permissionsFrom).permissions();
+
+ boost::system::error_code error;
+ boost::filesystem::permissions(applyTo, permissions, error);
+
+ return !error;
+ };
+
+ auto canChangePermissionsOnTemporaryFile = [&](const boost::filesystem::path& pathToCreateTemporaryFileUnder, const boost::filesystem::path& pathToTakePermissionsFrom) {
+ auto temporaryFilePath = createTemporaryFile(pathToCreateTemporaryFileUnder);
+ if (!temporaryFilePath) {
+ return false;
+ }
+
+ boost::system::error_code error;
+ auto fileExists = boost::filesystem::exists(temporaryFilePath.get(), error);
+ if (!fileExists || error) {
+ return false;
+ }
+
+ auto successfullPermissionCopy = applyMatchingPermissions(pathToTakePermissionsFrom, temporaryFilePath.get());
+
+ boost::filesystem::remove(temporaryFilePath.get(), error);
+
+ return successfullPermissionCopy;
+ };
+
+ auto bundleBoostPath = boost::filesystem::path(bundlePath);
+ if (!isDirectoryWritable(bundleBoostPath.parent_path()) || !isDirectoryWritable(bundleBoostPath)) {
+ return false;
+ }
+
+ return canChangePermissionsOnTemporaryFile(bundleBoostPath.parent_path(), bundleBoostPath);
+}
+
}