fuck php

notizen.md

$cat dns.php

<?php
    $host = "ipv4.tlund.se";
    var_dump(dns_get_record($host, DNS_A + DNS_AAAA));
    echo "----\n";
    var_dump(dns_get_record($host, DNS_A));
?>

##Fedora release 22 (Twenty Two) 4.4.13-200.fc22.x86_64

$ php --version

PHP 5.6.23 (cli) (built: Jun 22 2016 06:48:45) 
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies

$ php dns.php

array(1) {
  [0]=>
  array(5) {
    ["host"]=>
    string(10) "digitec.ch"
    ["class"]=>
    string(2) "IN"
    ["ttl"]=>
    int(60)
    ["type"]=>
    string(1) "A"
    ["ip"]=>
    string(14) "174.129.25.170"
  }
}
----
array(1) {
  [0]=>
  array(5) {
    ["host"]=>
    string(10) "digitec.ch"
    ["class"]=>
    string(2) "IN"
    ["ttl"]=>
    int(60)
    ["type"]=>
    string(1) "A"
    ["ip"]=>
    string(14) "174.129.25.170"
  }
}

##FreeBSD 10.3-RELEASE-p4

$ php -v

PHP 5.6.23 (cli) (built: Jul  2 2016 01:42:17) 
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies

$ php dns.php

PHP Warning:  dns_get_record(): DNS Query failed in /root/dns.php on line 5
bool(false)
----
array(1) {
  [0]=>
  array(5) {
    ["host"]=>
    string(10) "digitec.ch"
    ["class"]=>
    string(2) "IN"
    ["ttl"]=>
    int(53)
    ["type"]=>
    string(1) "A"
    ["ip"]=>
    string(14) "174.129.25.170"
  }
}

##Fedora C code

#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>

int main() {
    u_char ans[8192];
    //res_state state;
    res_init();
    int i = res_search("ipv4.tlund.se", 28, 0, ans, sizeof(ans));
    printf("status: %d\n", i);
    return i;
}

run it

gcc -lresolv -o dns_rec dns_req.c && ./dns_rec

##FreeBSD

#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>

int main() {
    res_init();
    u_char ans[8192];
    //int i = res_search("ipv4.tlund.se", 28, 0, ans, sizeof(ans));
    int i = res_search("google.com", 28, 0, ans, sizeof(ans));
    printf("status: %d\n", i);
    return i;
}

run it

$ clang -o dns_rec dns_req.c && ./dns_rec