1 files changed, 95 insertions, 0 deletions
diff --git a/toolkit/xre/nsUpdateDriver.h b/toolkit/xre/nsUpdateDriver.h
new file mode 100644
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+++ b/toolkit/xre/nsUpdateDriver.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsUpdateDriver_h__
+#define nsUpdateDriver_h__
+
+#include "nscore.h"
+#include "nsIUpdateService.h"
+#include "nsIThread.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "mozilla/Attributes.h"
+
+class nsIFile;
+
+#if defined(XP_WIN)
+#  include <windows.h>
+typedef HANDLE ProcessType;
+#elif defined(XP_UNIX)
+typedef pid_t ProcessType;
+#else
+#  include "prproces.h"
+typedef PRProcess* ProcessType;
+#endif
+
+/**
+ * This function processes any available updates.  As part of that process, it
+ * may exit the current process and relaunch it at a later time.
+ *
+ * Two directories are passed to this function: greDir (where the actual
+ * binary resides) and appDir (which contains application.ini for XULRunner
+ * apps). If this is not a XULRunner app then appDir is identical to greDir.
+ *
+ * The argc and argv passed to this function should be what is needed to
+ * relaunch the current process.
+ *
+ * The appVersion param passed to this function is the current application's
+ * version and is used to determine if an update's version is older than the
+ * current application version.
+ *
+ * If you want the update to be processed without restarting, set the restart
+ * parameter to false.
+ *
+ * This function does not modify appDir.
+ */
+nsresult ProcessUpdates(nsIFile* greDir, nsIFile* appDir, nsIFile* updRootDir,
+                        int argc, char** argv, const char* appVersion,
+                        bool restart = true, ProcessType* pid = nullptr);
+
+// The implementation of the update processor handles the task of loading the
+// updater application for staging an update.
+// XXX ehsan this is living in this file in order to make use of the existing
+// stuff here, we might want to move it elsewhere in the future.
+class nsUpdateProcessor final : public nsIUpdateProcessor {
+ public:
+  nsUpdateProcessor();
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIUPDATEPROCESSOR
+
+ private:
+  ~nsUpdateProcessor();
+
+  struct StagedUpdateInfo {
+    StagedUpdateInfo() : mArgc(0), mArgv(nullptr) {}
+    ~StagedUpdateInfo() {
+      for (int i = 0; i < mArgc; ++i) {
+        delete[] mArgv[i];
+      }
+      delete[] mArgv;
+    }
+
+    nsCOMPtr<nsIFile> mGREDir;
+    nsCOMPtr<nsIFile> mAppDir;
+    nsCOMPtr<nsIFile> mUpdateRoot;
+    int mArgc;
+    char** mArgv;
+    nsCString mAppVersion;
+  };
+
+ private:
+  void StartStagedUpdate();
+  void WaitForProcess();
+  void UpdateDone();
+  void ShutdownWatcherThread();
+
+ private:
+  ProcessType mUpdaterPID;
+  nsCOMPtr<nsIThread> mProcessWatcher;
+  StagedUpdateInfo mInfo;
+};
+#endif  // nsUpdateDriver_h__