github.com/greenpau/go-authcrunch@v1.1.4/pkg/idp/provider.go (about)

     1  // Copyright 2022 Paul Greenberg greenpau@outlook.com
     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  //     http://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  package idp
    16  
    17  import (
    18  	"encoding/json"
    19  	// "fmt"
    20  	"github.com/greenpau/go-authcrunch/pkg/authn/enums/operator"
    21  	"github.com/greenpau/go-authcrunch/pkg/authn/icons"
    22  	"github.com/greenpau/go-authcrunch/pkg/errors"
    23  	"github.com/greenpau/go-authcrunch/pkg/idp/oauth"
    24  	"github.com/greenpau/go-authcrunch/pkg/idp/saml"
    25  	"github.com/greenpau/go-authcrunch/pkg/requests"
    26  	"go.uber.org/zap"
    27  )
    28  
    29  // IdentityProvider represents identity provider.
    30  type IdentityProvider interface {
    31  	GetRealm() string
    32  	GetName() string
    33  	GetKind() string
    34  	GetDriver() string
    35  	GetConfig() map[string]interface{}
    36  	Configure() error
    37  	Configured() bool
    38  	Request(operator.Type, *requests.Request) error
    39  	GetLoginIcon() *icons.LoginIcon
    40  	GetLogoutURL() string
    41  	GetIdentityTokenCookieName() string
    42  }
    43  
    44  // NewIdentityProvider returns IdentityProvider instance.
    45  func NewIdentityProvider(cfg *IdentityProviderConfig, logger *zap.Logger) (IdentityProvider, error) {
    46  	var p IdentityProvider
    47  	var err error
    48  
    49  	if logger == nil {
    50  		return nil, errors.ErrIdentityProviderConfigureLoggerNotFound
    51  	}
    52  
    53  	if err := cfg.Validate(); err != nil {
    54  		return nil, err
    55  	}
    56  
    57  	b, _ := json.Marshal(cfg.Params)
    58  
    59  	switch cfg.Kind {
    60  	case "oauth":
    61  		config := &oauth.Config{}
    62  		if err := json.Unmarshal(b, config); err != nil {
    63  			return nil, errors.ErrIdentityProviderNewConfig.WithArgs(cfg.Params, err)
    64  		}
    65  		config.Name = cfg.Name
    66  		p, err = oauth.NewIdentityProvider(config, logger)
    67  	case "saml":
    68  		config := &saml.Config{}
    69  		if err := json.Unmarshal(b, config); err != nil {
    70  			return nil, errors.ErrIdentityProviderNewConfig.WithArgs(cfg.Params, err)
    71  		}
    72  		config.Name = cfg.Name
    73  		p, err = saml.NewIdentityProvider(config, logger)
    74  	}
    75  
    76  	if err != nil {
    77  		return nil, err
    78  	}
    79  
    80  	return p, nil
    81  }