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package middlewares
import (
"crypto/subtle"
"github.com/alist-org/alist/v3/internal/conf"
"github.com/alist-org/alist/v3/internal/model"
"github.com/alist-org/alist/v3/internal/op"
"github.com/alist-org/alist/v3/internal/setting"
"github.com/alist-org/alist/v3/server/common"
"github.com/gin-gonic/gin"
log "github.com/sirupsen/logrus"
)
// Auth is a middleware that checks if the user is logged in.
// if token is empty, set user to guest
func Auth(c *gin.Context) {
token := c.GetHeader("Authorization")
if subtle.ConstantTimeCompare([]byte(token), []byte(setting.GetStr(conf.Token))) == 1 {
admin, err := op.GetAdmin()
if err != nil {
common.ErrorResp(c, err, 500)
c.Abort()
return
}
c.Set("user", admin)
log.Debugf("use admin token: %+v", admin)
c.Next()
return
}
if token == "" {
guest, err := op.GetGuest()
if err != nil {
common.ErrorResp(c, err, 500)
c.Abort()
return
}
if guest.Disabled {
common.ErrorStrResp(c, "Guest user is disabled, login please", 401)
c.Abort()
return
}
c.Set("user", guest)
log.Debugf("use empty token: %+v", guest)
c.Next()
return
}
userClaims, err := common.ParseToken(token)
if err != nil {
common.ErrorResp(c, err, 401)
c.Abort()
return
}
user, err := op.GetUserByName(userClaims.Username)
if err != nil {
common.ErrorResp(c, err, 401)
c.Abort()
return
}
// validate password timestamp
if userClaims.PwdTS != user.PwdTS {
common.ErrorStrResp(c, "Password has been changed, login please", 401)
c.Abort()
return
}
if user.Disabled {
common.ErrorStrResp(c, "Current user is disabled, replace please", 401)
c.Abort()
return
}
c.Set("user", user)
log.Debugf("use login token: %+v", user)
c.Next()
}
func Authn(c *gin.Context) {
token := c.GetHeader("Authorization")
if subtle.ConstantTimeCompare([]byte(token), []byte(setting.GetStr(conf.Token))) == 1 {
admin, err := op.GetAdmin()
if err != nil {
common.ErrorResp(c, err, 500)
c.Abort()
return
}
c.Set("user", admin)
log.Debugf("use admin token: %+v", admin)
c.Next()
return
}
if token == "" {
guest, err := op.GetGuest()
if err != nil {
common.ErrorResp(c, err, 500)
c.Abort()
return
}
c.Set("user", guest)
log.Debugf("use empty token: %+v", guest)
c.Next()
return
}
userClaims, err := common.ParseToken(token)
if err != nil {
common.ErrorResp(c, err, 401)
c.Abort()
return
}
user, err := op.GetUserByName(userClaims.Username)
if err != nil {
common.ErrorResp(c, err, 401)
c.Abort()
return
}
// validate password timestamp
if userClaims.PwdTS != user.PwdTS {
common.ErrorStrResp(c, "Password has been changed, login please", 401)
c.Abort()
return
}
if user.Disabled {
common.ErrorStrResp(c, "Current user is disabled, replace please", 401)
c.Abort()
return
}
c.Set("user", user)
log.Debugf("use login token: %+v", user)
c.Next()
}
func AuthAdmin(c *gin.Context) {
user := c.MustGet("user").(*model.User)
if !user.IsAdmin() {
common.ErrorStrResp(c, "You are not an admin", 403)
c.Abort()
} else {
c.Next()
}
}
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