goauth2/client_application_command_authorization.go at master · event-modeling/goauth2 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
package goauth2

import (
	"github.com/inklabs/rangedb"
)

type clientApplicationCommandAuthorization struct {
	store         rangedb.Store
	pendingEvents []rangedb.Event
}

func newClientApplicationCommandAuthorization(store rangedb.Store) *clientApplicationCommandAuthorization {
	return &clientApplicationCommandAuthorization{
		store: store,
	}
}

func (h *clientApplicationCommandAuthorization) Handle(command Command) bool {
	switch c := command.(type) {

	case RequestAccessTokenViaImplicitGrant:
		clientApplication := h.loadClientApplicationAggregate(c.ClientID)

		if !clientApplication.IsOnBoarded {
			h.emit(RequestAccessTokenViaImplicitGrantWasRejectedDueToInvalidClientApplicationID{
				UserID:   c.UserID,
				ClientID: c.ClientID,
			})
			return false
		}

		if clientApplication.RedirectUri != c.RedirectUri {
			h.emit(RequestAccessTokenViaImplicitGrantWasRejectedDueToInvalidClientApplicationRedirectUri{
				UserID:      c.UserID,
				ClientID:    c.ClientID,
				RedirectUri: c.RedirectUri,
			})
			return false
		}

	case RequestAccessTokenViaROPCGrant:
		clientApplication := h.loadClientApplicationAggregate(c.ClientID)

		if !clientApplication.IsOnBoarded {
			h.emit(RequestAccessTokenViaROPCGrantWasRejectedDueToInvalidClientApplicationCredentials{
				UserID:   c.UserID,
				ClientID: c.ClientID,
			})
			return false
		}

		if clientApplication.ClientSecret != c.ClientSecret {
			h.emit(RequestAccessTokenViaROPCGrantWasRejectedDueToInvalidClientApplicationCredentials{
				UserID:   c.UserID,
				ClientID: c.ClientID,
			})
			return false
		}

	case RequestAccessTokenViaRefreshTokenGrant:
		clientApplication := h.loadClientApplicationAggregate(c.ClientID)

		if !clientApplication.IsOnBoarded {
			h.emit(RequestAccessTokenViaRefreshTokenGrantWasRejectedDueToInvalidClientApplicationCredentials{
				RefreshToken: c.RefreshToken,
				ClientID:     c.ClientID,
			})
			return false
		}

		if clientApplication.ClientSecret != c.ClientSecret {
			h.emit(RequestAccessTokenViaRefreshTokenGrantWasRejectedDueToInvalidClientApplicationCredentials{
				RefreshToken: c.RefreshToken,
				ClientID:     c.ClientID,
			})
			return false
		}

	case RequestAuthorizationCodeViaAuthorizationCodeGrant:
		clientApplication := h.loadClientApplicationAggregate(c.ClientID)

		if !clientApplication.IsOnBoarded {
			h.emit(RequestAuthorizationCodeViaAuthorizationCodeGrantWasRejectedDueToInvalidClientApplicationID{
				UserID:   c.UserID,
				ClientID: c.ClientID,
			})
			return false
		}

		if clientApplication.RedirectUri != c.RedirectUri {
			h.emit(RequestAuthorizationCodeViaAuthorizationCodeGrantWasRejectedDueToInvalidClientApplicationRedirectUri{
				UserID:      c.UserID,
				ClientID:    c.ClientID,
				RedirectUri: c.RedirectUri,
			})
			return false
		}

	case RequestAccessTokenViaAuthorizationCodeGrant:
		clientApplication := h.loadClientApplicationAggregate(c.ClientID)

		if !clientApplication.IsOnBoarded {
			h.emit(RequestAccessTokenViaAuthorizationCodeGrantWasRejectedDueToInvalidClientApplicationID{
				AuthorizationCode: c.AuthorizationCode,
				ClientID:          c.ClientID,
			})
			return false
		}

		if clientApplication.ClientSecret != c.ClientSecret {
			h.emit(RequestAccessTokenViaAuthorizationCodeGrantWasRejectedDueToInvalidClientApplicationSecret{
				AuthorizationCode: c.AuthorizationCode,
				ClientID:          c.ClientID,
			})
			return false
		}

		if clientApplication.RedirectUri != c.RedirectUri {
			h.emit(RequestAccessTokenViaAuthorizationCodeGrantWasRejectedDueToInvalidClientApplicationRedirectUri{
				AuthorizationCode: c.AuthorizationCode,
				ClientID:          c.ClientID,
				RedirectUri:       c.RedirectUri,
			})
			return false
		}

	}

	return true
}

func (h *clientApplicationCommandAuthorization) emit(events ...rangedb.Event) {
	h.pendingEvents = append(h.pendingEvents, events...)
}

func (h *clientApplicationCommandAuthorization) loadClientApplicationAggregate(clientID string) *clientApplication {
	return newClientApplication(h.store.AllEventsByStream(clientApplicationStream(clientID)))
}

func (h *clientApplicationCommandAuthorization) GetPendingEvents() []rangedb.Event {
	return h.pendingEvents
}