#include <jni.h>
#include <string>
#include <android/log.h>
#include <string.h>
#include <jni.h>

static jclass contextClass;
static jclass signatureClass;
static jclass packageNameClass;
static jclass packageInfoClass;

const char *RELEASE_SIGN = "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";


// 加密密钥
const unsigned char XOR_KEY[] = {0x7A, 0xB3, 0xC9, 0xD5, 0xE1, 0xF8, 0x42, 0x91, 0x37, 0x8F, 0x5D,
                                 0x2E};

// 加密后的M1卡密码数组
const unsigned char ENCRYPTED_SECTOR_KEYS[] = {
        // 扇区0密码 (加密后)
        0x9C, 0x45, 0x36, 0x55, 0x8C, 0x7F, 0x35, 0x93, 0x4B, 0x78, 0x2A, 0x79,
        // 扇区1密码 (加密后)
        0xB4, 0x52, 0x91, 0x45, 0x99, 0x87, 0x3C, 0xA3, 0x6E, 0x5F, 0x1D, 0x5E,
        // 以下类似格式存储其他扇区密码...
        0x1E, 0x85, 0xEB, 0x51, 0xB9, 0x39, 0x02, 0x2E, 0x77, 0x1F, 0x3E, 0x93,
        0x22, 0x62, 0xBD, 0x83, 0x99, 0x2A, 0x2F, 0x19, 0x95, 0x07, 0x29, 0x2E,
        0x90, 0x18, 0xE0, 0x6A, 0xB7, 0x68, 0x34, 0x89, 0x42, 0x5B, 0x16, 0x47,
        0xA8, 0x0B, 0xB5, 0x97, 0xB4, 0x43, 0x1D, 0x62, 0x89, 0x73, 0x33, 0x2E,
        0x24, 0x9D, 0xB7, 0x46, 0x8D, 0x64, 0x49, 0x7A, 0x52, 0x41, 0x1C, 0x91,
        0x31, 0x78, 0x95, 0x52, 0x95, 0x39, 0x19, 0x4C, 0x81, 0x2A, 0x0D, 0x47,
        0xF5, 0x64, 0xA7, 0x93, 0xB9, 0x51, 0x27, 0x82, 0x43, 0x68, 0x31, 0x3F,
        0x55, 0x93, 0xB7, 0x68, 0x97, 0x9A, 0x37, 0x71, 0x52, 0x49, 0x17, 0x1E,
        0x8E, 0x93, 0xB5, 0x44, 0x8D, 0x42, 0x22, 0x84, 0x95, 0x33, 0x22, 0x93,
        0x42, 0x82, 0xA3, 0x35, 0x91, 0x33, 0x13, 0x93, 0x71, 0x21, 0x01, 0x71,
        0x37, 0x9F, 0xA6, 0x68, 0x92, 0x86, 0x46, 0x72, 0x43, 0x62, 0x12, 0x52,
        0x5D, 0x85, 0x93, 0x86, 0x82, 0x46, 0x31, 0x86, 0x57, 0x48, 0x16, 0x88,
        0x97, 0x73, 0xB5, 0x47, 0x95, 0x55, 0x36, 0x69, 0x49, 0x58, 0x18, 0x6A,
        0xEA, 0x46, 0x84, 0x93, 0x82, 0x19, 0x29, 0x91, 0x31, 0x1C, 0x0C, 0x7D
};

// 解密函数
void decrypt_key(const unsigned char *encrypted, char *decrypted, size_t len) {
    for (size_t i = 0; i < len; i++) {
        decrypted[i] = encrypted[i] ^ XOR_KEY[i % sizeof(XOR_KEY)];
    }
    decrypted[len] = '\0';
}

//extern "C" JNIEXPORT jstring
//
//JNICALL
//Java_com_yglx_testjni_MainActivity_getKey(
//        JNIEnv *env,
//        jobject /* this */) {
//    return env->NewStringUTF(AUTH_KEY);
//}

JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) {

    JNIEnv *env = NULL;
    jint result = -1;
    if (vm->GetEnv((void **) &env, JNI_VERSION_1_4) != JNI_OK)
        return result;

    contextClass = (jclass) env->NewGlobalRef((env)->FindClass("android/content/Context"));
    signatureClass = (jclass) env->NewGlobalRef((env)->FindClass("android/content/pm/Signature"));
    packageNameClass = (jclass) env->NewGlobalRef(
            (env)->FindClass("android/content/pm/PackageManager"));
    packageInfoClass = (jclass) env->NewGlobalRef(
            (env)->FindClass("android/content/pm/PackageInfo"));

    __android_log_print(ANDROID_LOG_DEBUG, "jw", "sss");
    return JNI_VERSION_1_4;
}


extern "C"
JNIEXPORT jstring JNICALL
Java_com_dayu_general_tool_GeBaseHelper_getM1SectorKeySecure(JNIEnv *env, jobject instance,
                                                             jobject contextObject,
                                                             jint sectorIndex) {
    // 获取包管理器相关方法ID
    jmethodID getPackageManagerId = (env)->GetMethodID(contextClass, "getPackageManager",
                                                       "()Landroid/content/pm/PackageManager;");
    jmethodID getPackageNameId = (env)->GetMethodID(contextClass, "getPackageName",
                                                    "()Ljava/lang/String;");
    jmethodID signToStringId = (env)->GetMethodID(signatureClass, "toCharsString",
                                                  "()Ljava/lang/String;");
    jmethodID getPackageInfoId = (env)->GetMethodID(packageNameClass, "getPackageInfo",
                                                    "(Ljava/lang/String;I)Landroid/content/pm/PackageInfo;");

    // 获取应用签名信息
    jobject packageManagerObject = (env)->CallObjectMethod(contextObject, getPackageManagerId);
    jstring packNameString = (jstring) (env)->CallObjectMethod(contextObject, getPackageNameId);
    jobject packageInfoObject = (env)->CallObjectMethod(packageManagerObject, getPackageInfoId,
                                                        packNameString, 64);
    jfieldID signaturefieldID = (env)->GetFieldID(packageInfoClass, "signatures",
                                                  "[Landroid/content/pm/Signature;");
    jobjectArray signatureArray = (jobjectArray) (env)->GetObjectField(packageInfoObject,
                                                                       signaturefieldID);
    jobject signatureObject = (env)->GetObjectArrayElement(signatureArray, 0);

    // 获取签名字符串
    const char *signStrng = (env)->GetStringUTFChars(
            (jstring) (env)->CallObjectMethod(signatureObject, signToStringId), 0);

    // 调试日志输出
    __android_log_print(ANDROID_LOG_DEBUG, "M1Card", "Current signature: %s", signStrng);

    // 验证签名并返回所有扇区密码
    if (strcmp(signStrng, RELEASE_SIGN) == 0) {
        size_t numKeys = sizeof(ENCRYPTED_SECTOR_KEYS) / 12; // 每个密钥12字节
        char *allKeys = new char[numKeys * 13]; // 为每个密钥预留12个字符+1个分隔符
        allKeys[0] = '\0';

        for (size_t i = 0; i < numKeys; i++) {
            char decrypted[13];
            decrypt_key(ENCRYPTED_SECTOR_KEYS + (i * 12), decrypted, 12);

            strcat(allKeys, decrypted);
            if (i < numKeys - 1) {
                strcat(allKeys, ",");
            }
        }

        jstring result = (env)->NewStringUTF(allKeys);
        delete[] allKeys;
        return result;
    } else {
        return (env)->NewStringUTF("signature_verification_failed");
    }
}