我正在尝试为 SAMP Android 创建启动器。一切都很顺利，直到 SAMP 本身的集成 (build69)。 libsamp.so 找不到相邻 libGTASA.so 库的地址。
初始化所有库（Java）
static {
vmVersion = null;
System.out.println("**** Loading SO's");
try
{
vmVersion = System.getProperty("java.vm.version");
System.out.println("vmVersion " + vmVersion);
System.out.println("**** Loading libImmEmulatorJ.so");
System.loadLibrary("ImmEmulatorJ");
} catch (ExceptionInInitializerError | UnsatisfiedLinkError e) {
}
System.out.println("**** Loading libGTASA.so");
System.loadLibrary("GTASA");
System.out.println("**** Loading libsamp.so");
System.loadLibrary("samp");
}
在libsamp.so中查找库（C++ JNI）
jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
Log("SAMP library loaded! Build time: " __DATE__ " " __TIME__);
g_libGTASA = FindLibrary("libGTASA.so");
if(g_libGTASA == 0)
{
Log("ERROR: libGTASA.so address not found!");
return 0;
}
Log("libGTASA.so image base address: 0x%X", g_libGTASA);
srand(time(0));
InitHookStuff();
InitRenderWareFunctions();
InstallSpecialHooks();
pthread_t thread;
pthread_create(&thread, 0, Init, 0);
struct sigaction act;
act.sa_sigaction = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
sigaction(SIGSEGV, &act, 0);
return JNI_VERSION_1_4;
}
查找图书馆：
uintptr_t FindLibrary(const char* library)
{
char filename[0xFF] = {0},
buffer[2048] = {0};
FILE *fp = 0;
uintptr_t address = 0;
sprintf( filename, "/proc/%d/maps", getpid() );
fp = fopen( filename, "rt" );
if(fp == 0)
{
Log("ERROR: can't open file %s", filename);
goto done;
}
while(fgets(buffer, sizeof(buffer), fp))
{
if( strstr( buffer, library ) )
{
address = (uintptr_t)strtoul( buffer, 0, 16 );
break;
}
}
done:
if(fp)
fclose(fp);
return address;
}
应用日志：
2023-10-28 14:57:32.800 29054-29054 System.out com.kalinovka.game I **** Loading SO's
2023-10-28 14:57:32.800 29054-29054 System.out com.kalinovka.game I vmVersion 2.1.0
2023-10-28 14:57:32.800 29054-29054 System.out com.kalinovka.game I **** Loading libImmEmulatorJ.so
2023-10-28 14:57:32.804 29054-29054 System.out com.kalinovka.game I **** Loading libGTASA.so
2023-10-28 14:57:32.813 29054-29054 NVEvent com.kalinovka.game D JNI_OnLoad called
2023-10-28 14:57:32.813 29054-29054 NVEvent com.kalinovka.game D RegisterNatives 12
2023-10-28 14:57:32.813 29054-29054 System.out com.kalinovka.game I **** Loading libsamp.so
2023-10-28 14:57:32.815 29054-29054 AXL com.kalinovka.game I SAMP library loaded! Build time: Oct 28 2023 14:47:20
2023-10-28 14:57:32.819 29054-29054 AXL com.kalinovka.game I ERROR: libGTASA.so address not found!
2023-10-28 14:57:32.820 29054-29054 AndroidRuntime com.kalinovka.game D Shutting down VM
2023-10-28 14:57:32.823 29054-29054 AndroidRuntime com.kalinovka.game E FATAL EXCEPTION: main
Process: com.kalinovka.game, PID: 29054
java.lang.UnsatisfiedLinkError: Bad JNI version returned from JNI_OnLoad in "/data/app/~~AIt22YvJlsdkRyH_N_WAEw==/com.kalinovka.game-G93aBwDihlPGnVBadiHFkQ==/base.apk!/lib/armeabi-v7a/libsamp.so": 0
at java.lang.Runtime.loadLibrary0(Runtime.java:1082)
at java.lang.Runtime.loadLibrary0(Runtime.java:1003)
at java.lang.System.loadLibrary(System.java:1661)
at com.kalinovka.game.core.GTASA.<clinit>(GTASA.java:28)
at java.lang.Class.newInstance(Native Method)
at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:95)
at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:45)
at android.app.Instrumentation.newActivity(Instrumentation.java:1287)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3701)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3977)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:109)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2374)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:233)
at android.os.Looper.loop(Looper.java:344)
at android.app.ActivityThread.main(ActivityThread.java:8249)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:589)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1071)
2023-10-28 14:57:32.894 29054-29054 Process com.kalinovka.game I Sending signal. PID: 29054 SIG: 9
错误：从 JNI_OnLoad 返回的 JNI 版本无效 - 由于 libsamp.so 发送了 0，您可以忽略此
我删除了对 libsamp.so 的所有引用，应用程序可以正常工作，GTASA 本身是由 id 初始化的，这意味着 libGTASA.so 已加载并正在运行。
我在 FindLibrary 中更改了库名称，它也返回零。表示由于Android API级别导致访问出现问题。
我在俄语网站上发现了同样的问题，但没有解决方案，但问题表明此错误仅发生在Android API 30+上
很可能是 SDK 版本有问题
可能是28以上的版本。