Warn users of Telechips devices that app will crash with their broken libc

ChangeAppSettings.sh

@@ -661,7 +661,7 @@ mv -f project/src/Globals.java.1 project/src/Globals.java
 echo Patching project/jni/Settings.mk
 echo '# DO NOT EDIT THIS FILE - it is automatically generated, edit file SettingsTemplate.mk' > project/jni/Settings.mk
 cat project/jni/SettingsTemplate.mk | \
-	sed "s/APP_MODULES := .*/APP_MODULES := application sdl-$LibSdlVersion sdl_main stlport jpeg png ogg flac vorbis freetype $CompiledLibraries/" | \
+	sed "s/APP_MODULES := .*/APP_MODULES := application sdl-$LibSdlVersion sdl_main stlport jpeg png ogg flac vorbis freetype stdout-test $CompiledLibraries/" | \
 	sed "s/APP_ABI := .*/APP_ABI := $MultiABI/" | \
 	sed "s/SDL_JAVA_PACKAGE_PATH := .*/SDL_JAVA_PACKAGE_PATH := $AppFullNameUnderscored/" | \
 	sed "s^SDL_CURDIR_PATH := .*^SDL_CURDIR_PATH := $DataPath^" | \
@@ -718,6 +718,7 @@ if [ -d "project/jni/application/src/AndroidData" ] ; then
 		fi
 	done
 	cp project/jni/application/src/AndroidData/* project/assets/
+	ln -s ../libs/armeabi/stdout-test project/assets/
 fi
 
 echo Done

project/java/Globals.java

@@ -85,4 +85,5 @@ class Globals {
 	public static String DataDir = new String("");
 	public static boolean SmoothVideo = false;
 	public static boolean MultiThreadedVideo = false;
+	public static boolean BrokenLibCMessageShown = false;
 }

project/java/MainActivity.java

@@ -613,12 +613,7 @@ public class MainActivity extends Activity {
 
 					out.flush();
 					out.close();
-					try {
-						(new ProcessBuilder().command("/system/bin/chmod", "0755", path).start()).waitFor();
-					} catch ( Exception eeee ) {}
-					try {
-						(new ProcessBuilder().command("/system/xbin/chmod", "0755", path).start()).waitFor();
-					} catch ( Exception eeeee ) {}
+					Settings.nativeChmod(path, 0755);
 				}
 			}
 			catch ( Exception eee )

project/java/Settings.java

@@ -149,6 +149,7 @@ class Settings
 			out.writeInt(Globals.OptionalDataDownload.length);
 			for(int i = 0; i < Globals.OptionalDataDownload.length; i++)
 				out.writeBoolean(Globals.OptionalDataDownload[i]);
+			out.writeBoolean(Globals.BrokenLibCMessageShown);
 
 			out.close();
 			settingsLoaded = true;
@@ -283,6 +284,7 @@ class Settings
 			Globals.OptionalDataDownload = new boolean[settingsFile.readInt()];
 			for(int i = 0; i < Globals.OptionalDataDownload.length; i++)
 				Globals.OptionalDataDownload[i] = settingsFile.readBoolean();
+			Globals.BrokenLibCMessageShown = settingsFile.readBoolean();
 			
 			settingsLoaded = true;
 
@@ -394,9 +396,67 @@ class Settings
 
 	static ArrayList<Menu> menuStack = new ArrayList<Menu> ();
 
-	public static void showConfig(final MainActivity p, boolean firstStart)
+	public static void showConfig(final MainActivity p, final boolean firstStart)
 	{
 		settingsChanged = true;
+		if( !Globals.BrokenLibCMessageShown )
+		{
+			Globals.BrokenLibCMessageShown = true;
+			try {
+				InputStream in = p.getAssets().open("stdout-test");
+				File outDir = p.getFilesDir();
+				try {
+					outDir.mkdirs();
+				} catch( SecurityException ee ) { };
+				
+				byte[] buf = new byte[16384];
+				OutputStream out = null;
+				String path = outDir.getAbsolutePath() + "/" + "stdout-test";
+
+				out = new FileOutputStream( path );
+				int len = in.read(buf);
+				while (len >= 0)
+				{
+					if(len > 0)
+						out.write(buf, 0, len);
+					len = in.read(buf);
+				}
+
+				out.flush();
+				out.close();
+				Settings.nativeChmod(path, 0755);
+				if( (new ProcessBuilder().command(path).start()).waitFor() != 42 )
+				{
+					System.out.println("libSDL: stdout-test FAILED, your libc is broken");
+					AlertDialog.Builder builder = new AlertDialog.Builder(p);
+					builder.setTitle(p.getResources().getString(R.string.broken_libc_title));
+					builder.setMessage(p.getResources().getString(R.string.broken_libc_text));
+					builder.setPositiveButton(p.getResources().getString(R.string.ok), new DialogInterface.OnClickListener()
+					{
+						public void onClick(DialogInterface dialog, int item) 
+						{
+							dialog.dismiss();
+							showConfig(p, firstStart);
+						}
+					});
+					builder.setOnCancelListener(new DialogInterface.OnCancelListener()
+					{
+						public void onCancel(DialogInterface dialog)
+						{
+							dialog.dismiss();
+							showConfig(p, firstStart);
+						}
+					});
+					AlertDialog alert = builder.create();
+					alert.setOwnerActivity(p);
+					alert.show();
+					return;
+				}
+				System.out.println("libSDL: stdout-test passed, your libc seems to be good");
+			} catch ( Exception eeee ) {
+				System.out.println("libSDL: Cannot run stdout-test: " + eeee.toString());
+			}
+		}
 
 		if( Globals.OptionalDataDownload == null )
 		{
@@ -2401,5 +2461,6 @@ class Settings
 	private static native void nativeSetMultitouchGestureSensitivity(int sensitivity);
 	private static native void nativeSetTouchscreenCalibration(int x1, int y1, int x2, int y2);
 	public static native void  nativeSetEnv(final String name, final String value);
+	public static native int   nativeChmod(final String name, int mode);
 }
 

project/java/translations/values/strings.xml

@@ -151,5 +151,7 @@
     <string name="display_size_small">Small (phone)</string>
     <string name="display_size_tiny">Tiny (Xperia Mini)</string>
     <string name="show_more_options">Show more options</string>
+    <string name="broken_libc_title">Broken OS detected</string>
+    <string name="broken_libc_text">Your device has broken system libraries, this application will most probably crash. Please install a system update, or flash a custom ROM, or copy file /system/lib/libc.so from another device (experts only!)</string>
 
 </resources>

project/jni/application/fheroes2/AndroidAppSettings.cfg

@@ -25,8 +25,8 @@ RedefinedKeysScreenKb="LCTRL M T H E C SPACE C S L"
 StartupMenuButtonTimeout=3000
 HiddenMenuOptions='KeyboardConfigMainMenu ScreenKeyboardThemeConfig ScreenKeyboardTransparencyConfig'
 MultiABI=n
-AppVersionCode=238815
-AppVersionName="2388.15"
+AppVersionCode=239115
+AppVersionName="2391.15"
 CompiledLibraries="sdl_net sdl_mixer sdl_image sdl_ttf png intl"
 CustomBuildScript=n
 AppCflags='-finline-functions -O2 -DWITH_ZLIB -DWITH_MIXER -DWITH_XML -DWITH_IMAGE -DWITH_TTF -DWITH_AI=simple -DWITH_NET'

project/jni/application/src

@@ -1 +1 @@
-vcmi
+fheroes2

project/jni/sdl-1.3/src/video/android/SDL_touchscreenkeyboard.c

@@ -803,3 +803,13 @@ int SDLCALL SDL_ANDROID_GetScreenKeyboardTextInput(char * textBuf, int textBufSi
 	return 1;
 };
 
+// That's probably not the right file to put this func
+JNIEXPORT jint JNICALL
+JAVA_EXPORT_NAME(Settings_nativeChmod) ( JNIEnv*  env, jobject thiz, jstring j_name, jint mode )
+{
+    jboolean iscopy;
+    const char *name = (*env)->GetStringUTFChars(env, j_name, &iscopy);
+    int ret = chmod(name, mode);
+    (*env)->ReleaseStringUTFChars(env, j_name, name);
+    return (ret == 0);
+};

project/jni/stdout-test/Android.mk

@@ -0,0 +1,8 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := stdout-test
+LOCAL_SRC_FILES = stdout-test.c
+
+include $(BUILD_EXECUTABLE)

project/jni/stdout-test/stdout-test.c

@@ -0,0 +1,18 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+extern int main(int argc, char *argv[]);
+
+int main(int argc, char *argv[])
+{
+	// Numerous Telechips devices will crash this simple Posix-compatibility test
+	printf("printf()\n");
+	fprintf(stdout, "fprintf(stdout)\n");
+	fflush(stdout);
+	fprintf(stderr, "fprintf(stderr)\n");
+	fflush(stderr);
+	write(STDOUT_FILENO, "write(1)\n", strlen("write(1)\n"));
+	write(STDERR_FILENO, "write(2)\n", strlen("write(2)\n"));
+	return 42;
+}