nginx + lua resource anti-leeching

Instructions for use

1. Install lua extension for nginx

2. Modify the nginx configuration file

1. set $salt “cmstopSalt”; md5 keychain
2. set $expire “ 2"; Expiration time
3. set $timeType 'seconds'; The expiration time type seconds is seconds and its value is minutes

3. The following code is saved as a lua file

--Get the md5 value

function getMd5(time)

Return ngx.md5(ngx.var.salt .. time)

end

--Get parameters

local args = nil

"IF "get" == ngx.var.request_method the

args = ngx.req.get_uri_args ()

End

local key = args ['key']

Local time = tonumber(args['time'])

--Get the allowed time range

local ur = 0;

local interval = 1;

if ngx.var.timeType ~ = 'seconds' then

interval = 60;

end

--Verify whether the key is legal and expired

if time ~= nil and key ~= nil and string.len(key ) == 32 and getMd5(time) == key and time + tonumber(ngx.var.expire) * interval >= tonumber(os.time()) then

ur = 1;

end � .m3u8$ {

rewrite_by_lua_file 'lua file address';

}

5. PHP key generation rules and parameter settings

//The value defined in nginx is such as: cmstop Salt

index.m3u8?key=&time=

The above introduces nginx + lua resource hotlink prevention, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.