53 lines
1.7 KiB
JavaScript
53 lines
1.7 KiB
JavaScript
function getCookie(name) {
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var cookieValue = null;
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if (document.cookie && document.cookie != '') {
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var cookies = document.cookie.split(';');
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for (var i = 0; i < cookies.length; i++) {
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var cookie = jQuery.trim(cookies[i]);
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// Does this cookie string begin with the name we want?
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if (cookie.substring(0, name.length + 1) == (name + '=')) {
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cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
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break;
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}
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}
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}
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return cookieValue;
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}
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function csrfSafeMethod(method) {
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// these HTTP methods do not require CSRF protection
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return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
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}
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function sameOrigin(url) {
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// test that a given url is a same-origin URL
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// url could be relative or scheme relative or absolute
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var host = document.location.host; // host + port
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var protocol = document.location.protocol;
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var sr_origin = '//' + host;
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var origin = protocol + sr_origin;
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// Allow absolute or scheme relative URLs to same origin
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return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
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(url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
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// or any other URL that isn't scheme relative or absolute i.e relative.
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!(/^(\/\/|http:|https:).*/.test(url));
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}
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var csrftoken = window.drf.csrfToken;
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$.ajaxSetup({
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beforeSend: function(xhr, settings) {
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if (!csrfSafeMethod(settings.type) && sameOrigin(settings.url)) {
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// Send the token to same-origin, relative URLs only.
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// Send the token only if the method warrants CSRF protection
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// Using the CSRFToken value acquired earlier
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xhr.setRequestHeader(window.drf.csrfHeaderName, csrftoken);
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}
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}
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});
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