266 lines
9.4 KiB
JavaScript
266 lines
9.4 KiB
JavaScript
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/* jshint node: true */
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(function () {
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"use strict";
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function CookieAccessInfo(domain, path, secure, script) {
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if (this instanceof CookieAccessInfo) {
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this.domain = domain || undefined;
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this.path = path || "/";
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this.secure = !!secure;
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this.script = !!script;
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return this;
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}
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return new CookieAccessInfo(domain, path, secure, script);
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}
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CookieAccessInfo.All = Object.freeze(Object.create(null));
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exports.CookieAccessInfo = CookieAccessInfo;
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function Cookie(cookiestr, request_domain, request_path) {
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if (cookiestr instanceof Cookie) {
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return cookiestr;
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}
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if (this instanceof Cookie) {
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this.name = null;
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this.value = null;
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this.expiration_date = Infinity;
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this.path = String(request_path || "/");
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this.explicit_path = false;
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this.domain = request_domain || null;
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this.explicit_domain = false;
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this.secure = false; //how to define default?
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this.noscript = false; //httponly
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if (cookiestr) {
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this.parse(cookiestr, request_domain, request_path);
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}
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return this;
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}
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return new Cookie(cookiestr, request_domain, request_path);
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}
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exports.Cookie = Cookie;
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Cookie.prototype.toString = function toString() {
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var str = [this.name + "=" + this.value];
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if (this.expiration_date !== Infinity) {
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str.push("expires=" + (new Date(this.expiration_date)).toGMTString());
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}
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if (this.domain) {
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str.push("domain=" + this.domain);
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}
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if (this.path) {
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str.push("path=" + this.path);
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}
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if (this.secure) {
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str.push("secure");
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}
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if (this.noscript) {
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str.push("httponly");
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}
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return str.join("; ");
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};
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Cookie.prototype.toValueString = function toValueString() {
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return this.name + "=" + this.value;
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};
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var cookie_str_splitter = /[:](?=\s*[a-zA-Z0-9_\-]+\s*[=])/g;
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Cookie.prototype.parse = function parse(str, request_domain, request_path) {
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if (this instanceof Cookie) {
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var parts = str.split(";").filter(function (value) {
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return !!value;
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}),
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pair = parts[0].match(/([^=]+)=([\s\S]*)/),
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key = pair[1],
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value = pair[2],
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i;
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this.name = key;
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this.value = value;
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for (i = 1; i < parts.length; i += 1) {
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pair = parts[i].match(/([^=]+)(?:=([\s\S]*))?/);
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key = pair[1].trim().toLowerCase();
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value = pair[2];
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switch (key) {
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case "httponly":
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this.noscript = true;
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break;
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case "expires":
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this.expiration_date = value ?
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Number(Date.parse(value)) :
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Infinity;
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break;
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case "path":
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this.path = value ?
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value.trim() :
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"";
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this.explicit_path = true;
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break;
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case "domain":
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this.domain = value ?
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value.trim() :
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"";
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this.explicit_domain = !!this.domain;
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break;
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case "secure":
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this.secure = true;
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break;
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}
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}
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if (!this.explicit_path) {
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this.path = request_path || "/";
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}
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if (!this.explicit_domain) {
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this.domain = request_domain;
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}
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return this;
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}
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return new Cookie().parse(str, request_domain, request_path);
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};
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Cookie.prototype.matches = function matches(access_info) {
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if (access_info === CookieAccessInfo.All) {
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return true;
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}
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if (this.noscript && access_info.script ||
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this.secure && !access_info.secure ||
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!this.collidesWith(access_info)) {
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return false;
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}
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return true;
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};
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Cookie.prototype.collidesWith = function collidesWith(access_info) {
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if ((this.path && !access_info.path) || (this.domain && !access_info.domain)) {
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return false;
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}
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if (this.path && access_info.path.indexOf(this.path) !== 0) {
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return false;
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}
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if (this.explicit_path && access_info.path.indexOf( this.path ) !== 0) {
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return false;
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}
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var access_domain = access_info.domain && access_info.domain.replace(/^[\.]/,'');
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var cookie_domain = this.domain && this.domain.replace(/^[\.]/,'');
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if (cookie_domain === access_domain) {
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return true;
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}
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if (cookie_domain) {
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if (!this.explicit_domain) {
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return false; // we already checked if the domains were exactly the same
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}
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var wildcard = access_domain.indexOf(cookie_domain);
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if (wildcard === -1 || wildcard !== access_domain.length - cookie_domain.length) {
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return false;
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}
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return true;
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}
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return true;
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};
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function CookieJar() {
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var cookies, cookies_list, collidable_cookie;
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if (this instanceof CookieJar) {
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cookies = Object.create(null); //name: [Cookie]
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this.setCookie = function setCookie(cookie, request_domain, request_path) {
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var remove, i;
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cookie = new Cookie(cookie, request_domain, request_path);
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//Delete the cookie if the set is past the current time
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remove = cookie.expiration_date <= Date.now();
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if (cookies[cookie.name] !== undefined) {
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cookies_list = cookies[cookie.name];
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for (i = 0; i < cookies_list.length; i += 1) {
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collidable_cookie = cookies_list[i];
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if (collidable_cookie.collidesWith(cookie)) {
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if (remove) {
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cookies_list.splice(i, 1);
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if (cookies_list.length === 0) {
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delete cookies[cookie.name];
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}
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return false;
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}
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cookies_list[i] = cookie;
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return cookie;
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}
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}
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if (remove) {
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return false;
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}
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cookies_list.push(cookie);
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return cookie;
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}
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if (remove) {
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return false;
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}
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cookies[cookie.name] = [cookie];
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return cookies[cookie.name];
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};
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//returns a cookie
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this.getCookie = function getCookie(cookie_name, access_info) {
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var cookie, i;
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cookies_list = cookies[cookie_name];
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if (!cookies_list) {
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return;
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}
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for (i = 0; i < cookies_list.length; i += 1) {
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cookie = cookies_list[i];
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if (cookie.expiration_date <= Date.now()) {
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if (cookies_list.length === 0) {
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delete cookies[cookie.name];
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}
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continue;
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}
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if (cookie.matches(access_info)) {
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return cookie;
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}
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}
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};
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//returns a list of cookies
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this.getCookies = function getCookies(access_info) {
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var matches = [], cookie_name, cookie;
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for (cookie_name in cookies) {
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cookie = this.getCookie(cookie_name, access_info);
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if (cookie) {
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matches.push(cookie);
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}
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}
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matches.toString = function toString() {
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return matches.join(":");
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};
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matches.toValueString = function toValueString() {
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return matches.map(function (c) {
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return c.toValueString();
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}).join(';');
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};
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return matches;
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};
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return this;
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}
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return new CookieJar();
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}
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exports.CookieJar = CookieJar;
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//returns list of cookies that were set correctly. Cookies that are expired and removed are not returned.
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CookieJar.prototype.setCookies = function setCookies(cookies, request_domain, request_path) {
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cookies = Array.isArray(cookies) ?
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cookies :
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cookies.split(cookie_str_splitter);
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var successful = [],
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i,
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cookie;
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cookies = cookies.map(function(item){
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return new Cookie(item, request_domain, request_path);
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});
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for (i = 0; i < cookies.length; i += 1) {
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cookie = cookies[i];
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if (this.setCookie(cookie, request_domain, request_path)) {
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successful.push(cookie);
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}
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}
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return successful;
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};
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}());
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