httpdownload.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <curl/curl.h>

int main( int argc, char * argv[] )
{
    CURL * curl;
    CURLcode res;
    FILE * pf;

    char * myurl = argv[1];
    char * output = argv[2];

    curl = curl_easy_init();

    if(!curl)
    {
        fprintf(stderr, "Fatal: curl_easy_init() error.\n");
        return EXIT_FAILURE;
    }

    pf = fopen( output, "wb" );

    if(!pf)
    {
        fprintf(stderr, "Fatal: cannot open output file for writing: %s\n", output );

        curl_easy_cleanup( curl );
        return EXIT_FAILURE;
    }

    curl_easy_setopt(curl, CURLOPT_URL, myurl );
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L );
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite );
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, pf );

    res = curl_easy_perform(curl);

    if( res != CURLE_OK )
    {
        fprintf( stderr, "Request failed: curl_easy_perform(): %s\n", curl_easy_strerror(res) );

        curl_easy_cleanup( curl );
        fclose(pf);
        return EXIT_FAILURE;
    }

    fprintf( stderr, "Success: file %s successfully written!\n", output );

    curl_easy_cleanup( curl );
    fclose(pf);
    return EXIT_SUCCESS;
}

/* eof */