Updater: Add support for appimage

CMakeLists.txt

@@ -947,7 +947,7 @@ if(BUILD_OPENEMU)
 	install(TARGETS ${BINARY_NAME}-openemu LIBRARY DESTINATION ${OE_LIBDIR} COMPONENT ${BINARY_NAME}.oecoreplugin NAMELINK_SKIP)
 endif()
 
-if(BUILD_QT AND (WIN32 OR APPLE))
+if(BUILD_QT AND (WIN32 OR APPLE OR CMAKE_SYSTEM_NAME STREQUAL "Linux"))
 	set(BUILD_UPDATER ON)
 endif()
 

src/feature/updater-main.c

@@ -173,25 +173,73 @@ int main(int argc, char* argv[]) {
 			prefix = false;
 			needsUnmount = true;
 #endif
-		} else {
+		} else if (strcmp(extension, "appimage") != 0) {
 			archive = VDirOpenArchive(updateArchive);
 		}
-		if (!archive) {
-			puts("Cannot open update archive");
-		} else {
+		if (archive) {
 			puts("Extracting update");
 			if (extractArchive(archive, root, prefix)) {
-				puts("Complete");
-				const char* command = mUpdateGetCommand(&config);
-				strlcpy(bin, command, sizeof(bin));
 				ok = 0;
-				mUpdateDeregister(&config);
 			} else {
 				puts("An error occurred");
 			}
 			archive->close(archive);
 			unlink(updateArchive);
 		}
+#ifdef __linux__
+		else if (strcmp(extension, "appimage") == 0) {
+			const char* command = mUpdateGetCommand(&config);
+			strlcpy(bin, command, sizeof(bin));
+			if (rename(updateArchive, bin) < 0) {
+				if (errno == EXDEV) {
+					// Cross-dev, need to copy manually
+					int infd = open(updateArchive, O_RDONLY);
+					int outfd = -1;
+					if (infd >= 0) {
+						ok = 2;
+					} else {
+						outfd = open(bin, O_CREAT | O_WRONLY | O_TRUNC, 0755);
+					}
+					if (outfd < 0) {
+						ok = 2;
+					} else {
+						uint8_t buffer[2048];
+						ssize_t size;
+						while ((size = read(infd, buffer, sizeof(buffer))) > 0) {
+							if (write(outfd, buffer, size) < size) {
+								ok = 2;
+								break;
+							}
+						}
+						if (size < 0) {
+							ok = 2;
+						}
+						close(outfd);
+						close(infd);
+					}
+					if (ok == 2) {
+						puts("Cannot move update over old file");
+					}
+				} else {
+					puts("Cannot move update over old file");
+				}
+			} else {
+				ok = 0;
+			}
+			if (ok == 0) {
+				chmod(bin, 0755);
+			}
+		}
+#endif
+		else {
+			puts("Cannot open update archive");
+		}
+		if (ok == 0) {
+			puts("Complete");
+			const char* command = mUpdateGetCommand(&config);
+			strlcpy(bin, command, sizeof(bin));
+			mUpdateDeregister(&config);
+		}
 #ifdef __APPLE__
 		if (needsUnmount) {
 			char* args[] = {"hdiutil", "detach", devpath, NULL};

src/platform/qt/ApplicationUpdatePrompt.cpp

@@ -24,13 +24,23 @@ ApplicationUpdatePrompt::ApplicationUpdatePrompt(QWidget* parent)
 	ApplicationUpdater* updater = GBAApp::app()->updater();
 	ApplicationUpdater::UpdateInfo info = updater->updateInfo();
 	QString updateText(tr("An update to %1 is available.\n").arg(QLatin1String(projectName)));
+	bool available;
 #if defined(Q_OS_WIN) || defined(Q_OS_MAC)
-	updateText += tr("\nDo you want to download and install it now? You will need to restart the emulator when the download is complete.");
-	m_okDownload = connect(m_ui.buttonBox, &QDialogButtonBox::accepted, this, &ApplicationUpdatePrompt::startUpdate);
+	available = true;
+#elif defined(Q_OS_LINUX)
+	QString path = QCoreApplication::applicationDirPath();
+	QFileInfo finfo(path + "/../../AppRun");
+	available = finfo.exists() && finfo.isExecutable();
 #else
-	updateText += tr("\nAuto-update is not available on this platform. If you wish to update you will need to do it manually.");
-	connect(m_ui.buttonBox, &QDialogButtonBox::accepted, this, &QWidget::close);
+	available = false;
 #endif
+	if (available) {
+		updateText += tr("\nDo you want to download and install it now? You will need to restart the emulator when the download is complete.");
+		m_okDownload = connect(m_ui.buttonBox, &QDialogButtonBox::accepted, this, &ApplicationUpdatePrompt::startUpdate);
+	} else {
+		updateText += tr("\nAuto-update is not available on this platform. If you wish to update you will need to do it manually.");
+		connect(m_ui.buttonBox, &QDialogButtonBox::accepted, this, &QWidget::close);
+	}
 	m_ui.text->setText(updateText);
 	m_ui.details->setText(tr("Current version: %1\nNew version: %2\nDownload size: %3")
 		.arg(QLatin1String(projectVersion))

src/platform/qt/ApplicationUpdater.cpp

@@ -151,6 +151,8 @@ const char* ApplicationUpdater::platform() {
 #endif
 #elif defined(Q_OS_MACOS)
 	return "osx";
+#elif defined(Q_OS_LINUX) && defined(__x86_64__)
+	return "appimage-x64";
 #else
 	// Return one that will be up to date, but we can't download
 	return "win64";