github.com/google/go-safeweb@v0.0.0-20231219055052-64d8cfc90fbb/examples/sample-application/secure/auth/ctx.go (about)

     1  // Copyright 2020 Google LLC
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //	https://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build go1.16
    16  // +build go1.16
    17  
    18  package auth
    19  
    20  import (
    21  	"context"
    22  
    23  	"github.com/google/go-safeweb/safehttp"
    24  )
    25  
    26  type key string
    27  
    28  const (
    29  	userKey       key = "user"
    30  	changeSessKey key = "change"
    31  )
    32  
    33  type sessionAction string
    34  
    35  const (
    36  	clearSess sessionAction = "clear"
    37  	setSess   sessionAction = "set"
    38  )
    39  
    40  func putSessionAction(ctx context.Context, action sessionAction) {
    41  	safehttp.FlightValues(ctx).Put(changeSessKey, action)
    42  }
    43  
    44  func ctxSessionAction(ctx context.Context) sessionAction {
    45  	v := safehttp.FlightValues(ctx).Get(changeSessKey)
    46  	action, ok := v.(sessionAction)
    47  	if !ok {
    48  		return ""
    49  	}
    50  	return action
    51  }
    52  
    53  func putUser(ctx context.Context, user string) {
    54  	safehttp.FlightValues(ctx).Put(userKey, user)
    55  }
    56  
    57  func ctxUser(ctx context.Context) string {
    58  	v := safehttp.FlightValues(ctx).Get(userKey)
    59  	user, ok := v.(string)
    60  	if !ok {
    61  		return ""
    62  	}
    63  	return user
    64  }