openresty钉钉免密登陆

--- 本次请求是否应该走钉钉登陆逻辑: zkk
--- 依据UA判定,返回 true 或 false

local luaConfig = require "ding_config"
local hmac = require "resty.hmac"
local cjson = require "cjson.safe"
local http = require "resty.http"
local t_ = require "tool_"
local httpc = http.new()



local appid=luaConfig.ding_account.appid
local appsecret= luaConfig.ding_account.appsecret
local AppKey= luaConfig.ding_account.AppKey
local AppSecret=luaConfig.ding_account.AppSecret
local call_back=luaConfig.ding_account.call_back

local function post(url,body)
   
    local http = require "resty.http"
      local httpc = http.new()
      local res, err = httpc:request_uri(url, {
                ssl_verify = false,
                method = "POST",
                body = body,
                headers = {
--                    ['Content-Type']="application/x-www-form-urlencoded",
                    ['Content-Type']="application/json;charset=UTF-8"
        }
      })
    return res,err

end

local function get(url)
    local res, err = httpc:request_uri(url,
    {
    ssl_verify = false,
    method = "GET",
    body = "",
    headers = {
       ['Content-Type']="application/json;charset=UTF-8"
         }
    })
    return res,err
end

local function get_tooken_login()
    local res,err=get(string.format("https://oapi.dingtalk.com/sns/gettoken?appid=%s&appsecret=%s",appid,appsecret))
    return res.body
end

local function get_tooken_glable()
    local res,err=get(string.format("https://oapi.dingtalk.com/gettoken?appkey=%s&appsecret=%s",AppKey,AppSecret))
    return res.body
end



local function is_dingding_login()
    --TODO--
    local mobile = {
                "phone", "android", "mobile", "itouch", "ipod", "symbian", "htc", "palmos", "blackberry", "opera mini", "windows ce", "nokia", "fennec",
                "hiptop", "kindle", "mot", "webos", "samsung", "sonyericsson", "wap", "avantgo", "eudoraweb", "minimo", "netfront", "teleca"
    }
    local userAgent = ngx.req.get_headers().user_agent
    userAgent = string.lower(userAgent)
    for i, v in ipairs(mobile) do
        if string.match(userAgent, v) and string.match(userAgent, "dingtalk") then
            return true
        end
    end
    return false
end

--- 将页面重定向到钉钉的后台地址,等待对方回调回来
local function redirect_to_dingding()
    --TODO
    local uri="https://oapi.dingtalk.com/connect/oauth2/sns_authorize?appid="..appid.."&response_type=code&scope=snsapi_auth&redirect_uri="..call_back
--    print(uri)
    ngx.redirect(uri)
end

local function urlEncode(s)
  s = string.gsub(s, "([^%w%.%- ])", function(c) return string.format("%%%02X", string.byte(c)) end)
  return string.gsub(s, " ", "+")
end

local function temp_code_get_unionid(code)

    --时间戳
    local timestamp = ngx.now()*1000

    --签名计算
    local app_secret = appsecret
    local hmac_sha256 = hmac:new(app_secret, hmac.ALGOS.SHA256)
        if not hmac_sha256 then
            return false,"failed to create the hmac_sha1 object"
        end
    local ok = hmac_sha256:update(tostring(timestamp))
        if not ok then
            return false,"failed to add data"
        end
    local mac = hmac_sha256:final()  -- binary mac
    local signature=ngx.encode_base64(mac)
    if not hmac_sha256:reset() then
        return false,"failed to reset hmac_sha256"
    end
    local sign = urlEncode(signature)
    -- appid 是创建扫码登陆中的appid

    --获取用户信息
    local user_info_url = 'https://oapi.dingtalk.com/sns/getuserinfo_bycode?signature='..sign..'&timestamp='..timestamp..'&accessKey='..appid
    local data={tmp_auth_code = code }
    local res,err=post(user_info_url,cjson.encode(data))
    if res == nil or cjson.decode(res.body)['errcode']~=0 then
        return false,"获取用户unionid失败"
    end
    return true,cjson.decode(res.body)["user_info"]["unionid"]

end

local function unionid_get_userid(unionid)
    --获取全局tooken
    local tooken_ret=get_tooken_glable()
    local g_token=nil
    --{"errcode":0,"access_token":"b7e87fc6cced35ff8f01901c5ae0fa6b","errmsg":"ok","expires_in":7200}
    if cjson.decode(tooken_ret)['errcode'] then
         g_token=cjson.decode(tooken_ret)['access_token']
    else
        return false,"全局token 获取失败"
    end

    --获取用户钉钉userid
    local uid_url=string.format("https://oapi.dingtalk.com/user/getUseridByUnionid?access_token=%s&unionid=%s",g_token,unionid)
    local uid_res,uid_err=get(uid_url)
    --{"errcode":0,"errmsg":"ok","contactType":0,"userid":"083647406924133856"}
    local ding_uid=nil
    if uid_res==nil or cjson.decode(uid_res.body)["errcode"]~=0 then
        return false,"获取钉钉userid失败"
    else
       ding_uid=cjson.decode(uid_res.body)["userid"]
    end

    --获取用户详情
    local user_info_uri=string.format("https://oapi.dingtalk.com/user/get?access_token=%s&userid=%s",g_token,ding_uid)
    local userinfo_res,userinfo_err=get(user_info_uri)
    if userinfo_res==nil or cjson.decode(userinfo_res.body)["errcode"]~=0 then
        return false,"获取用户详情失败"
    else
        local mail=cjson.decode(userinfo_res.body)["email"]
        local mobile=cjson.decode(userinfo_res.body)["mobile"]
        local u_ret={
            mail = mail,
            mobile = mobile,
        }
        return true,u_ret
    end
end


local _M={}
_M.is_dingding_login=is_dingding_login
_M.redirect_to_dingding=redirect_to_dingding
_M.temp_code_get_unionid=temp_code_get_unionid
_M.unionid_get_userid=unionid_get_userid
return _M