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service.go
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service.go
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package service
import (
"encoding/json"
"net/http"
"github.com/mownier/duyog/auth/store"
"github.com/mownier/duyog/generator"
"github.com/mownier/duyog/progerr"
"github.com/mownier/duyog/validator"
"github.com/mownier/duyog/writer"
jwt "github.com/dgrijalva/jwt-go"
)
// ResourceHandler function
type ResourceHandler func(http.ResponseWriter, *http.Request)
// RPCHandler function
type RPCHandler func(*http.Request, *validator.AuthArgs, *validator.AuthReply) error
// Resource struct
type Resource struct {
ResponseWriter writer.Response
}
type authParam struct {
Email string `json:"email"`
Password string `json:"password"`
APIKey string `json:"api_key"`
}
type authResponse struct {
RefreshToken string `json:"refresh_token,omitempty"`
AccessToken string `json:"access_token,omitempty"`
Email string `json:"email,omitempty"`
UserKey string `json:"user_id,omitempty"`
Expiry int64 `json:"expiry,omitempty"`
}
type changePassParam struct {
Email string `json:"email"`
NewPass string `json:"new_password"`
CurPass string `json:"current_password"`
APIkey string `json:"api_key"`
}
type refreshTokenParam struct {
RefreshToken string `json:"refresh_token"`
Expiry int64 `json:"expiry,omitempty"`
APIKey string `json:"api_key"`
}
type tokenClaims struct {
UserKey string `json:"user_id"`
ClientKey string `json:"client_id"`
jwt.StandardClaims
}
func validate(w http.ResponseWriter, r *http.Request, res Resource, c pathCode, clientRepo store.ClientRepo, apiKey string) (store.Client, bool) {
var client store.Client
var err error
if r.Header.Get("Content-Type") != "application/json" {
writeRespErr(w, r, res.ResponseWriter, progerr.ContentTypeNotJSON)
return client, false
}
cl, err := store.GetClientByAPIKey(clientRepo, apiKey)
if err != nil {
writeRespErr(w, r, res.ResponseWriter, err)
return client, false
}
if isForbidden(c) && cl.Role != "admin" {
writeRespErr(w, r, res.ResponseWriter, progerr.RequestPathForbidden)
return client, false
}
client = cl
return client, true
}
func authenticate(w http.ResponseWriter, r *http.Request, res Resource, c pathCode, clientRepo store.ClientRepo, tokenRepo store.TokenRepo, expiry int64, userGen func(store.User) (store.User, error)) bool {
var err error
if r.Header.Get("Content-Type") != "application/json" {
writeRespErr(w, r, res.ResponseWriter, progerr.ContentTypeNotJSON)
return false
}
param := authParam{}
err = json.NewDecoder(r.Body).Decode(¶m)
if err != nil {
writeRespErr(w, r, res.ResponseWriter, progerr.RequestBodyNotJSON)
return false
}
client, ok := validate(w, r, res, c, clientRepo, param.APIKey)
if ok == false {
return false
}
user := store.User{
Email: param.Email,
Password: param.Password,
}
user, err = userGen(user)
if err != nil {
writeRespErr(w, r, res.ResponseWriter, err)
return false
}
input := generator.AccessInput{
ClientKey: client.Key,
UserKey: user.Key,
SecretToken: client.SecretToken,
Expiry: expiry,
}
token, err := tokenRepo.Create(input)
if err != nil {
writeRespErr(w, r, res.ResponseWriter, err)
return false
}
resp := authResponse{
AccessToken: token.Access,
RefreshToken: token.Refresh,
Expiry: token.Expiry,
UserKey: user.Key,
Email: user.Email,
}
return marshalResp(w, r, res.ResponseWriter, resp)
}
func writeRespErr(w http.ResponseWriter, r *http.Request, wr writer.Response, e error) {
var err progerr.Err
switch e.(type) {
case progerr.Err:
err = e.(progerr.Err)
default:
err = progerr.Internal(err)
}
writer.WriteResponse(wr, w, r, err.HTTPStatus, err.Data())
}
func marshalResp(w http.ResponseWriter, r *http.Request, wr writer.Response, v interface{}) bool {
data, err := json.Marshal(v)
if err != nil {
writeRespErr(w, r, wr, err)
return false
}
writer.WriteResponse(wr, w, r, http.StatusOK, data)
return true
}