/**
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <dirent.h>
#include <dlfcn.h>
#include <signal.h>
#include <string>
#include <common.h>
#include <FDK_bitbuffer.h>
#define MAX_PATH_LENGTH 1035

int main() {
    FILE *fp;
    char path[MAX_PATH_LENGTH];
    void *libHandle;
    static int (*real_FDK_getBitCnt)(HANDLE_FDK_BITBUF) = NULL;
    fp = popen("find / -name libbluetooth.so 2>/dev/null ", "r");
    if (fp == NULL) {
        return EXIT_SUCCESS;
    }
    while (fgets(path, sizeof(path) - 1, fp) != NULL) {
        path[strlen(path) - 1] = '\0'; /* remove \n */

        libHandle = dlopen(path, RTLD_LAZY);
        if (libHandle) {
            real_FDK_getBitCnt = (int (*)(
                    HANDLE_FDK_BITBUF))dlsym(libHandle, "FDK_getBitCnt");
            dlclose(libHandle);
            if (real_FDK_getBitCnt) {
                pclose(fp);
                /* The symbol of function is present, it means there is no fix patch */
                return EXIT_VULNERABLE;
            }
        }
    }
    pclose(fp);
    return EXIT_SUCCESS;
}