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| const config = {
no_ref: "off", //Control the HTTP referrer header, if you want to create an anonymous link that will hide the HTTP Referer header, please set to "on" ."off"
theme: "", //Homepage theme, use the empty value for default theme. To use urlcool theme, please fill with "theme/urlcool" .
cors: "on", //Allow Cross-origin resource sharing for API requests.
password: "aaaaaaaaa", //password
}
const html404 = `<!DOCTYPE html>
<body>
<h1>404 Not Found.</h1>
</body>`
const html_noref = `
<!DOCTYPE html>
<html>
<head>
<title>Redirecting</title>
<meta http-equiv="Refresh" content="1; url={Replace}" />
<meta name="referrer" content="no-referrer" />
</head>
<body>
<p>Redirecting..<br /><a href="{Replace}">{Replace}</a></p>
<script type="text/javascript">
/* <![CDATA[ */
setTimeout('window.location.replace( "{Replace}" + window.location.hash );', 1000 )
/* ]]> */
</script>
</body>
</html>
`
let response_header = {
"content-type": "text/html;charset=UTF-8",
}
if (config.cors == "on") {
response_header = {
"content-type": "text/html;charset=UTF-8",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST",
}
}
async function randomString(len) {
len = len || 6;
let $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/
let maxPos = $chars.length;
let result = '';
for (i = 0; i < len; i++) {
result += $chars.charAt(Math.floor(Math.random() * maxPos));
}
return result;
}
async function checkURL(URL) {
let str = URL;
let Expression = /http(s)?:\/\/([\w-]+\.)+[\w-]+(\/[\w- .\/?%&=]*)?/;
let objExp = new RegExp(Expression);
if (objExp.test(str) == true) {
if (str[0] == 'h')
return true;
else
return false;
} else {
return false;
}
}
async function save_url(URL, KEY) {
let random_key = KEY
let is_exist = await LINKS.get(random_key)
console.log(is_exist)
if (is_exist == null)
return await LINKS.put(random_key, URL), random_key
else
save_url(URL)
}
async function handleRequest(request) {
console.log(request)
if (request.method === "POST") {
let req = await request.json()
KEY = req["key"] || await randomString()
console.log(req["url"])
if (req["password"] != config.password) {
return new Response(`{"status":500,"key":": Error: Password Error!"}`, {
status: 500
})
}
if (!await checkURL(req["url"])) {
return new Response(`{"status":500,"key":": Error: Url illegal."}`, {
headers: response_header,
})
}
let stat, random_key = await save_url(req["url"], KEY)
console.log(stat)
if (typeof(stat) == "undefined") {
return new Response(`{"status":200,"key":"/` + random_key + `"}`, {
headers: response_header,
})
} else {
return new Response(`{"status":200,"key":": Error:Reach the KV write limitation."}`, {
headers: response_header,
})
}
} else if (request.method === "DELETE") {
let req = await request.json()
if (req["password"] != config.password) {
return new Response(`{"status":500,"key":": Error: Password Error!"}`, {
status: 500
})
}
const requestURL = new URL(request.url)
const path = requestURL.pathname.split("/")[1]
if (path == "") {
return new Response(html404, {
headers: {
"content-type": "text/html;charset=UTF-8",
},
status: 404
})
}
await LINKS.delete(path)
return new Response(`{"status":200,"del":"/` + path + `"}`, {
headers: response_header,
})
}else if (request.method === "OPTIONS") {
return new Response(``, {
headers: response_header,
})
}
const requestURL = new URL(request.url)
const path = requestURL.pathname.split("/")[1]
if (path == "") {
return new Response(html404, {
headers: {
"content-type": "text/html;charset=UTF-8",
},
status: 404
})
}
const value = await LINKS.get(path)
if (value) {
if (config.no_ref == "on") {
no_ref = html_noref.replace(/{Replace}/gm, value)
return new Response(no_ref, {
headers: {
"content-type": "text/html;charset=UTF-8",
},
})
} else {
return Response.redirect(value, 301)
}
}
// If request not in kv, return 404
return new Response(html404, {
headers: {
"content-type": "text/html;charset=UTF-8",
},
status: 404
})
}
addEventListener("fetch", async event => {
event.respondWith(handleRequest(event.request))
})
|