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-- httpserver-basicauth.lua

-- Part of nodemcu-httpserver, authenticates a user using http basic auth.

-- Author: Sam Dieck

basicAuth = {}

function basicAuth.authenticate(header)

conf = dofile("httpserver-conf.lc")

-- Parse basic auth http header.

-- Returns the username if header contains valid credentials,

-- nil otherwise.

local credentials_enc = header:match("Authorization: Basic ([A-Za-z0-9+/=]+)")

if not credentials_enc then

return nil

end

--local credentials = dofile("httpserver-b64decode.lc")(credentials_enc)

local credentials=require("base64dec").dec(credentials_enc)

local user, pwd = credentials:match("^(.*):(.*)$")

if user ~= conf.auth.user or pwd ~= conf.auth.password then

return nil

end

--print("httpserver-basicauth: User \"" .. user .. "\" authenticated.")

return user

end

function basicAuth.authErrorHeader()

return "WWW-Authenticate: Basic realm=\"" .. conf.auth.realm .. "\""

end

return basicAuth