gistfile1.c

/* 
 * File:   main.c
 * Author: jgarcia
 *
 * Created on February 3, 2015, 7:04 AM
 */

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

CURL *curl;

char *url = "https://support.us.playstation.com/";

//char *url = "file://status.html";

struct MemoryStruct {
    char *memory;       // Used to store the result from the 
    size_t size;
};
 
 
static size_t write_memory_callback(void *contents, size_t size, size_t nmemb, void *userp) {
    size_t realsize = size * nmemb;
    struct MemoryStruct *mem = (struct MemoryStruct *)userp;

    mem->memory = realloc(mem->memory, mem->size + realsize + 1);
    if(mem->memory == NULL) {
        /* out of memory! */ 
        printf("not enough memory (realloc returned NULL)\n");
        return 0;
    }

    memcpy(&(mem->memory[mem->size]), contents, realsize);
    mem->size += realsize;
    mem->memory[mem->size] = 0;

    return realsize;
}
 


// Inspired by: http://curl.haxx.se/libcurl/c/getinmemory.html
int get_psn_status() {
    int psn_status = 0;
    
    CURL *curl_handle;
    CURLcode res;

    struct MemoryStruct chunk;

    chunk.memory = malloc(1);  /* will be grown as needed by the realloc above */ 
    chunk.size = 0;    /* no data at this point */ 

    curl_global_init(CURL_GLOBAL_ALL);

    curl_handle = curl_easy_init();

    curl_easy_setopt(curl_handle, CURLOPT_URL, url);
    curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_memory_callback);
    curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);

    /* some servers don't like requests that are made without a user-agent
       field, so we provide one */ 
    curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");

    res = curl_easy_perform(curl_handle);

    /* check for errors */ 
    if (res != CURLE_OK) {
        fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
        psn_status = -1;
    }
    else {
    
        char *output = (char *)chunk.memory;
        
        printf("%lu bytes retrieved\n", (long)chunk.size);

        char *pointer = strstr(output, "PSN Status: ONLINE");
        
        if (pointer) {
            //printf("FOUND [%s]\n", pointer);
            psn_status = 1;   
        }

    }
 
    /* cleanup curl stuff */ 
    curl_easy_cleanup(curl_handle);

    if(chunk.memory) {
        free(chunk.memory);
    }
    
    /* we're done with libcurl, so clean it up */ 
    curl_global_cleanup();

    return psn_status;
}
    
    
int main(void) {
    int status = get_psn_status();
    
    if (status == 1) {
        printf("PSN is up, bitch\n");
    }
    else if (status == 0) {
        printf("PSN is down\n");
    }
    else if (status == -1) {
        printf("Could not connect to PSN\n");
    }
    exit(0);
}