#include "javacap.h"
#include "pcapext.h"

JNIEXPORT jint JNICALL Java_javacap_getCapturedLength (JNIEnv *env, jobject obj) {
        jint temp=javacap_d0.hdr.caplen;
        return temp;
}

JNIEXPORT jint JNICALL Java_javacap_getDataLinkType (JNIEnv *env, jobject obj) {
        jint temp=javacap_d0.datalink;
        return temp;
}

JNIEXPORT jstring JNICALL Java_javacap_getError (JNIEnv *env,jobject obj) {
        char* buf=NULL;
        char no_error[]="";

        if(javacap_d0.error==0)
                buf=no_error;
        else
                buf=javacap_d0.errbuf;
        return (*env)->NewStringUTF(env, buf);
}

JNIEXPORT jint JNICALL Java_javacap_getPacketLength (JNIEnv *env, jobject obj) {
        jint temp=javacap_d0.hdr.len;
        return temp;
}

JNIEXPORT void JNICALL Java_javacap_open (JNIEnv *env, jobject obj, jstring str, jint bs) {
        char* s=(*env)->GetStringUTFChars(env,str,0);
        javacap_open(s,bs);
        (*env)->ReleaseStringUTFChars(env, str, s);
}

JNIEXPORT void JNICALL Java_javacap_close (JNIEnv *env, jobject obj) {
        javacap_close();
}

JNIEXPORT void JNICALL Java_javacap_read (JNIEnv * env, jobject obj, jbyteArray arr) {
        int i=0;
        int caplen=0;
        jsize len = (*env)->GetArrayLength(env, arr);
        jbyte *body = (*env)->GetByteArrayElements(env, arr, 0);
        if(len<caplen) caplen=len;
        while(javacap_read()==NULL);
        caplen=javacap_d0.hdr.caplen;
        for (i=0;i<caplen;i++) {
                body[i]=javacap_d0.packet[i];
        }
        (*env)->ReleaseByteArrayElements(env, arr, body, 0);
}

JNIEXPORT jint JNICALL Java_javacap_setFilter (JNIEnv *env, jobject obj, jstring str, jint msk) {
        char* s=(*env)->GetStringUTFChars(env,str,0);
        jint temp = javacap_setfilter(s,msk);
        (*env)->ReleaseStringUTFChars(env, str, s);
        return temp;
}

JNIEXPORT jint JNICALL Java_javacap_getReceivedPackets (JNIEnv *env, jobject obj) {
        jint temp=javacap_getReceivedPackets();
        return temp;
}

JNIEXPORT jint JNICALL Java_javacap_getDroppedPackets (JNIEnv *env, jobject obj) {
        jint temp=javacap_getDroppedPackets();
        return temp;
}