/
lib.go
148 lines (136 loc) · 3.67 KB
/
lib.go
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package auth
import (
"fmt"
"net/http"
"github.com/ddosakura/sola"
"github.com/ddosakura/sola/middleware"
"github.com/dgrijalva/jwt-go"
)
// New Auth Middleware
func New(signOrAuth middleware.Middleware, pre middleware.Middleware, success middleware.Middleware) middleware.Middleware {
if pre == nil {
pre = nextFn
}
if success == nil {
success = func(c middleware.Context, next middleware.Next) {
sola.Text(c, "auth success")
}
}
return middleware.Merge(func(c middleware.Context, next middleware.Next) {
r := sola.GetRequest(c)
cache, err := r.Cookie(authCookieCacheKey)
tmp := r.Header.Get("Authorization")
if tmp == "" && err == nil {
r.Header.Set("Authorization", cache.Value)
}
next()
}, pre, signOrAuth, success)
}
// Sign Token
func Sign(t Type, key interface{}) middleware.Middleware {
switch t {
case AuthJWT:
return signJWT(key)
}
return signBase
}
func signBase(c middleware.Context, next middleware.Next) {
// 可取代浏览器默认弹窗的方式
username, ok1 := c[CtxUsername].(string)
password, ok2 := c[CtxPassword].(string)
if !ok1 || !ok2 {
sola.Text(c, "Internal Server Error", http.StatusInternalServerError)
return
}
sola.SetCookie(c, &http.Cookie{
Name: authCookieCacheKey,
Value: "Basic " + basicAuth(username, password),
})
next()
}
func signJWT(key interface{}) middleware.Middleware {
return func(c middleware.Context, next middleware.Next) {
tmp := c[CtxClaims]
if tmp == nil {
sola.Text(c, "Internal Server Error", http.StatusInternalServerError)
return
}
claims := tmp.(map[string]interface{})
var tmp2 jwt.MapClaims = claims
token := jwt.NewWithClaims(jwt.SigningMethodHS256, tmp2)
t, err := token.SignedString(key)
if err != nil {
sola.Text(c, "Internal Server Error", http.StatusInternalServerError)
return
}
sola.SetCookie(c, &http.Cookie{
Name: authCookieCacheKey,
Value: jwtAuthPrefix + t,
})
next()
}
}
// Auth Token
func Auth(t Type, key interface{}) middleware.Middleware {
switch t {
case AuthJWT:
return authJWT(key)
}
fn, ok := key.(BaseCheck)
if !ok {
fn = basePass
}
return authBase(fn)
}
func authBase(check BaseCheck) middleware.Middleware {
return func(c middleware.Context, next middleware.Next) {
r := sola.GetRequest(c)
username, password, ok := r.BasicAuth()
if !ok {
// TODO: custom
sola.ResponseHeader(c).Add("WWW-Authenticate", "Basic realm=\"sola\"")
sola.Text(c, "Unauthorized", http.StatusUnauthorized)
return
}
if check(username, password) {
next()
} else {
// TODO: custom
sola.Text(c, "Forbidden", http.StatusForbidden)
}
}
}
func authJWT(key interface{}) middleware.Middleware {
return func(c middleware.Context, next middleware.Next) {
r := sola.GetRequest(c)
auth := r.Header.Get("Authorization")
tokenString, ok := parseBearerAuth(auth)
if !ok {
// TODO: custom
sola.ResponseHeader(c).Add("WWW-Authenticate", jwtAuthPrefix)
sola.Text(c, "Unauthorized", http.StatusUnauthorized)
return
}
token, _ := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
// Don't forget to validate the alg is what you expect:
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return key, nil
})
if token == nil {
// TODO: custom
sola.ResponseHeader(c).Add("WWW-Authenticate", jwtAuthPrefix)
sola.Text(c, "Unauthorized", http.StatusUnauthorized)
return
}
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
var tmp map[string]interface{} = claims
c[CtxClaims] = tmp
next()
} else {
// TODO: custom
sola.Text(c, "Forbidden", http.StatusForbidden)
}
}
}