cloudflare反代代码

worker代码:

// 替换成你想镜像的站点

const upstream = 'google.com'




// 如果那个站点有专门的移动适配站点,否则保持和上面一致

const upstream_mobile = 'google.com'




// 你希望禁止哪些国家访问

const blocked_region = ['KP']




// 禁止自访问

const blocked_ip_address = ['0.0.0.0', '127.0.0.1']




// 替换成你想镜像的站点

const replace_dict = {

'$upstream': '$custom_domain',

'//google.com': ''

}




//以下内容都不用动

addEventListener('fetch', event => {

event.respondWith(fetchAndApply(event.request));

})




async function fetchAndApply(request) {




const region = request.headers.get('cf-ipcountry').toUpperCase();

const ip_address = request.headers.get('cf-connecting-ip');

const user_agent = request.headers.get('user-agent');




let response = null;

let url = newURL(request.url);

let url_host = url.host;




if (url.protocol == 'http:') {

url.protocol = 'https:'

response = Response.redirect(url.href);

return response;

}




if (await device_status(user_agent)) {

upstream_domain = upstream

} else {

upstream_domain = upstream_mobile

}




url.host = upstream_domain;




if (blocked_region.includes(region)) {

response = new Response('Access denied: WorkersProxy is not available in your region yet.', {

status: 403

});

} else if(blocked_ip_address.includes(ip_address)){

response = new Response('Access denied: Your IP address is blocked by WorkersProxy.', {

status: 403

});

} else{

let method = request.method;

let request_headers = request.headers;

let new_request_headers = newHeaders(request_headers);




new_request_headers.set('Host', upstream_domain);

new_request_headers.set('Referer', url.href);




let original_response = await fetch(url.href, {

method: method,

headers: new_request_headers

})




let original_response_clone = original_response.clone();

let original_text = null;

let response_headers = original_response.headers;

let new_response_headers = newHeaders(response_headers);

let status = original_response.status;




new_response_headers.set('access-control-allow-origin', '*');

new_response_headers.set('access-control-allow-credentials', true);

new_response_headers.delete('content-security-policy');

new_response_headers.delete('content-security-policy-report-only');

new_response_headers.delete('clear-site-data');




const content_type = new_response_headers.get('content-type');

if (content_type.includes('text/html') && content_type.includes('UTF-8')) {

original_text = await replace_response_text(original_response_clone, upstream_domain, url_host);

} else {

original_text = original_response_clone.body

}




response = new Response(original_text, {

status,

headers: new_response_headers

})

}

return response;

}




async function replace_response_text(response, upstream_domain, host_name) {

let text = await response.text()




var i, j;

for (i in replace_dict) {

j = replace_dict[i]

if (i == '$upstream') {

i = upstream_domain

} else if (i == '$custom_domain') {

i = host_name

}




if (j == '$upstream') {

j = upstream_domain

} else if (j == '$custom_domain') {

j = host_name

}




let re = newRegExp(i, 'g')

text = text.replace(re, j);

}

return text;

}




async function device_status (user_agent_info) {

var agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];

var flag = true;

for (var v = 0; v < agents.length; v++) {

if (user_agent_info.indexOf(agents[v]) > 0) {

flag = false;

break;

}

}

return flag;

}

 

THE END
评论 抢沙发