blob: 731b0b8f5aa81d7741ee226384e47c54c17ab17a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2011, Matthias Andreas Benkard.
"use strict";
jQuery(function($) {
var acceptable_cashhash = function (hash) {
return (hash[0] === '0' &&
hash[1] === '0' &&
hash[2] === '0' &&
hash[3] === '0');
};
var form_augmented_p = false;
$('.comment-form').submit(function() {
var form = $(this);
if (!form_augmented_p) {
$.ajax({
url: "/RPC/generate-transaction-key",
dataType: 'json',
success: function(tkey) {
var salt = 0;
var text = form.find('textarea').val().replace(/\s+/g, "");
var submit_button = form.find(':submit');
var status_message;
submit_button.after('<span class="hashcash-status-message">Calculating Hashcash. Please wait...<span id="hashcash-status-dots"></span></span>');
status_message = form.find('.hashcash-status-message');
status_message.fadeOut(0);
status_message.fadeIn(200);
submit_button.attr("disabled", true);
var tryHashcash = function () {
var tryRightNow = 1000;
$('#hashcash-status-dots').append('.');
while (!acceptable_cashhash(Sha256.hash(text + ":" + tkey + ":" + salt))) {
salt++;
tryRightNow--;
if (tryRightNow === 0) {
setTimeout(tryHashcash, 0);
return;
}
}
form.prepend('<input type="hidden" name="transaction-key" value="' + tkey + '" />');
form.prepend('<input type="hidden" name="salt" value="' + salt + '" />');
form_augmented_p = true;
//submit_button.removeAttr("disabled");
$('.comment-form').submit();
form.submit();
};
setTimeout(tryHashcash, 0);
}
});
return false;
} else {
return true;
}
});
$('.spam-detection-info').html("This website uses a <a href=\"http://en.wikipedia.org/w/index.php?title=Hashcash&oldid=417692755\">Hashcash</a>-like proof-of-work system for spam detection.");
$('.comment-form').find('input, textarea').removeAttr('disabled'); //.prop('disabled', false);
});
|
