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handler.go
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/
handler.go
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package security
import (
"log"
"net/http"
"os"
"database/sql"
"github.com/mleonard87/merknera/repository"
)
type LoginHandler struct{}
func (l LoginHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// allow cross domain AJAX requests
w.Header().Set("Access-Control-Allow-Origin", os.Getenv("MERKNERA_ALLOW_ORIGIN"))
w.Header().Set("Access-Control-Allow-Headers", "content-type,authorization")
w.Header().Set("Access-Control-Allow-Credentials", "true")
idToken := r.FormValue("id_token")
tir, err := ValidateGoogleIdToken(idToken)
if err != nil {
log.Printf("security/handler: Error validating id_token:\n%v\n", err)
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("401 Unauthorized"))
return
}
user, err := getOrCreateUserFromTokenInfo(tir)
tokenString, err := NewJWTToken(user.Id)
if err != nil {
log.Printf("security/handler: Error generating JWT token:\n%v\n", err)
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("401 Unauthorized"))
return
}
jwtCookie := http.Cookie{
Name: JWT_COOKIE_NAME,
Value: tokenString,
}
http.SetCookie(w, &jwtCookie)
w.Write([]byte("OK"))
}
func getOrCreateUserFromTokenInfo(tir TokenInfoResponse) (repository.User, error) {
var user repository.User
user, err := repository.GetUserByEmail(tir.Email)
if err != nil {
// If we found no rows then bootstrap a user account now.
if err == sql.ErrNoRows {
user, err = repository.CreateUser(tir.Name, tir.Email, tir.Picture)
if err != nil {
return repository.User{}, err
}
return user, nil
}
return repository.User{}, err
}
err = user.Update(tir.Name, tir.Picture)
if err != nil {
return user, err
}
return user, nil
}
type LogoutHandler struct{}
func (l LogoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// allow cross domain AJAX requests
w.Header().Set("Access-Control-Allow-Origin", os.Getenv("MERKNERA_ALLOW_ORIGIN"))
w.Header().Set("Access-Control-Allow-Headers", "content-type,authorization")
w.Header().Set("Access-Control-Allow-Credentials", "true")
jwtCookie := http.Cookie{
Name: JWT_COOKIE_NAME,
Value: "",
}
http.SetCookie(w, &jwtCookie)
w.Write([]byte("OK"))
}