automatically check for new updates

GUI/CMakeLists.txt

@@ -18,6 +18,6 @@ set(gui_SRCS
 	${RESOURCE_FILES}
 )
 add_executable(${PROJECT_NAME} WIN32 ${gui_SRCS})
-target_link_libraries(${PROJECT_NAME} Qt5::Widgets)
+target_link_libraries(${PROJECT_NAME} Qt5::Widgets winhttp)
 
 install_qt5_libs(${PROJECT_NAME})

GUI/mainwindow.cpp

@@ -31,6 +31,7 @@ MainWindow::MainWindow(QWidget *parent) :
 		[&](TextThread* thread, std::wstring& output) { return SentenceReceived(thread, output); }
 	);
 	Host::AddConsoleOutput(ABOUT);
+	std::thread([] { if (UpdateAvailable(CURRENT_VERSION)) Host::AddConsoleOutput(UPDATE_AVAILABLE); }).detach();
 }
 
 MainWindow::~MainWindow()

GUI/misc.cpp

@@ -2,6 +2,7 @@
 #include "const.h"
 #include "host/util.h"
 #include <Psapi.h>
+#include <Winhttp.h>
 #include <QTextStream>
 
 QMultiHash<QString, DWORD> GetAllProcesses()
@@ -248,3 +249,21 @@ QString GenerateCode(HookParam hp, DWORD processId)
 	if (hp.type & DIRECT_READ) return GenerateRCode(hp);
 	else return GenerateHCode(hp, processId);
 }
+
+bool UpdateAvailable(std::string currentVersion)
+{
+	// Queries GitHub releases API https://developer.github.com/v3/repos/releases/ and checks the last release tag to check if it's the same
+	struct InternetHandleCloser { void operator()(void* h) { WinHttpCloseHandle(h); } };
+	if (AutoHandle<InternetHandleCloser> internet = WinHttpOpen(L"Mozilla/5.0 Textractor", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, NULL, NULL, 0))
+		if (AutoHandle<InternetHandleCloser> connection = WinHttpConnect(internet, L"api.github.com", INTERNET_DEFAULT_HTTPS_PORT, 0))
+			if (AutoHandle<InternetHandleCloser> request = WinHttpOpenRequest(connection, L"GET", L"/repos/Artikash/Textractor/releases", NULL, NULL, NULL, WINHTTP_FLAG_SECURE))
+				if (WinHttpSendRequest(request, NULL, 0, NULL, 0, 0, NULL))
+				{
+					DWORD bytesRead;
+					char buffer[1000] = {};
+					WinHttpReceiveResponse(request, NULL);
+					WinHttpReadData(request, buffer, 1000, &bytesRead);
+					if (abs(strstr(buffer, "/tag/") - strstr(buffer, currentVersion.c_str())) > 10) return true;
+				}
+	return false;
+}

GUI/misc.h

@@ -15,3 +15,4 @@ private:
 QMultiHash<QString, DWORD> GetAllProcesses();
 std::optional<HookParam> ParseCode(QString HCode);
 QString GenerateCode(HookParam hp, DWORD processId);
+bool UpdateAvailable(std::string currentVersion);

include/text.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#define CURRENT_VERSION "3.5.1"
 constexpr auto SELECT_PROCESS = u8"Select Process";
 constexpr auto ATTACH_INFO = u8"If you don't see the process you want to attach, try running with admin rights\r\n"
 "You can also type in the process id";
@@ -20,11 +21,13 @@ constexpr auto UNHOOK = u8"Unhook";
 constexpr auto REMOVE_HOOK = u8"Which hook to remove?";
 constexpr auto SELECT_EXTENSION = u8"Select Extension";
 constexpr auto EXTENSIONS = u8"Extensions (*.dll)";
-constexpr auto ABOUT = L"Textractor beta v3.5.0 (project homepage: https://github.com/Artikash/Textractor)\r\n"
+constexpr auto ABOUT = L"Textractor beta v" CURRENT_VERSION " (project homepage: https://github.com/Artikash/Textractor)\r\n"
-"Made with love by Artikash (email: akashmozumdar@gmail.com)\r\n"
+"Made by me: Artikash (email: akashmozumdar@gmail.com)\r\n"
-"Please contact Artikash with any problems, feature requests, or questions relating to Textractor\r\n"
+"Please contact me with any problems, feature requests, or questions relating to Textractor\r\n"
 "You can do so via the project homepage (issues section) or via email\r\n"
-"Source code available under GPLv3 at project homepage";
+"Source code available under GPLv3 at project homepage\r\n"
+"I'm currently on the job market: please email me if you're hiring US software engineers";
+constexpr auto UPDATE_AVAILABLE = L"Update available: download it from https://github.com/Artikash/Textractor/releases";
 constexpr auto ALREADY_INJECTED = L"Textractor: already injected";
 constexpr auto ARCHITECTURE_MISMATCH = L"Textractor: architecture mismatch: try 32 bit Textractor instead";
 constexpr auto INJECT_FAILED = L"Textractor: couldn't inject";