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/*
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 * test_component: Read in a component and execute it
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pthread.h>
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int read_and_exec_file(char* file)
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{
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    char* buf = malloc(10000);
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    int f, n;
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    if ((f = open(file, O_RDONLY, 0)) < 0) {
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        perror("open");
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        exit(EXIT_FAILURE);
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    }
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    if ((n = read(f, buf, 100000)) < 0) {
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        perror("read");
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        exit(EXIT_FAILURE);
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    }
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    //printf("==> Read %d bytes, executing component...\n", n);
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    ((void(*)(void))buf)();
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    printf("==> Done.\n");
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    return 0;
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}
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int create_read_and_exec_thread(char* file)
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{
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    int err;
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    pthread_t pthread;
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    void* return_value;
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    if ((err = pthread_create(&pthread, NULL,
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                              read_and_exec_file, (void*)file)) != 0) {
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        fprintf(stderr, "pthread_create: %s\n", strerror(err));
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        return -1;
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    }
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    if ((err = pthread_join(pthread, &return_value)) != 0) {
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        fprintf(stderr, "pthread_join: %s\n", strerror(err));
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        return -1;
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    }
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    return 0;
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}
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int main(int argc, char* argv[])
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{
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    int c;
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    int threaded = 0;
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    while ((c = getopt(argc, argv, "tp:")) != EOF) {
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        switch (c) {
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        case 't':
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            threaded = 1;
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            break;
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        default:
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            fprintf(stderr, "usage: %s [ -t ] payload_bin\n", argv[0]);
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            exit(EXIT_FAILURE);
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        }
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    }
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    if (threaded)
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        create_read_and_exec_thread(argv[optind]);
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    else
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        read_and_exec_file(argv[optind]);
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}
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