PAC

proxy.pac

/**
 * PAC 文件
 * By：Alpha
 */
/* global isInNet, isPlainHostName, dnsResolve, shExpMatch */
function FindProxyForURL(url, host) {

    /* 返回代理 */
    var proxy = 'PROXY 192.168.0.88:8080; SOCKS 192.168.0.88:8080; DIRECT;',
        direct = "DIRECT;", i, domain;

    var BLACK_LIST = [
        /* instagram */
        "instagram.com",
        "google.com",

        /* v2ex */
        "v2ex.com",

        /* github */
        "github.com"
    ];

    url = url.toLowerCase();
    host = host.toLowerCase();

    // 本机
    if (host == "127.0.0.1") {
        return direct;
    }

    // 简单域名
    if (isPlainHostName(host)) {
        return direct;
    }

    // 内网
    var ip = dnsResolve(host);
    if (isInNet(ip, "10.0.0.0", "255.0.0.0") || isInNet(ip, "192.168.0.0", "255.255.0.0")) {
        return direct;
    }

    // 判断黑名单
    for (i = 0; i < BLACK_LIST.length; i++) {
        domain = '*' + BLACK_LIST[i];
        if (shExpMatch(host, domain)) {
            return proxy;
        }
    }

    return direct;
}