-
Notifications
You must be signed in to change notification settings - Fork 61
/
authenticator.go
209 lines (161 loc) · 4.66 KB
/
authenticator.go
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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
package auth
import (
"errors"
"fmt"
"net/http"
"strings"
"github.com/bricks-cloud/bricksllm/internal/encrypter"
internal_errors "github.com/bricks-cloud/bricksllm/internal/errors"
"github.com/bricks-cloud/bricksllm/internal/key"
"github.com/bricks-cloud/bricksllm/internal/provider"
"github.com/bricks-cloud/bricksllm/internal/route"
)
type providerSettingsManager interface {
GetSetting(id string) (*provider.Setting, error)
}
type routesManager interface {
GetRouteFromMemDb(path string) *route.Route
}
type keyMemStorage interface {
GetKey(hash string) *key.ResponseKey
}
type Authenticator struct {
psm providerSettingsManager
kms keyMemStorage
rm routesManager
}
func NewAuthenticator(psm providerSettingsManager, kms keyMemStorage, rm routesManager) *Authenticator {
return &Authenticator{
psm: psm,
kms: kms,
rm: rm,
}
}
func getApiKey(req *http.Request) (string, error) {
list := []string{
req.Header.Get("x-api-key"),
req.Header.Get("api-key"),
}
split := strings.Split(req.Header.Get("Authorization"), " ")
if len(split) >= 2 {
list = append(list, split[1])
}
for _, key := range list {
if len(key) != 0 {
return key, nil
}
}
return "", internal_errors.NewAuthError("api key not found")
}
func rewriteHttpAuthHeader(req *http.Request, setting *provider.Setting) error {
uri := req.URL.RequestURI()
if strings.HasPrefix(uri, "/api/routes") {
return nil
}
apiKey := setting.GetParam("apikey")
if len(apiKey) == 0 {
return errors.New("api key is empty in provider setting")
}
if strings.HasPrefix(uri, "/api/providers/anthropic") {
req.Header.Set("x-api-key", setting.GetParam("apikey"))
return nil
}
if strings.HasPrefix(uri, "/api/providers/azure") {
req.Header.Set("api-key", setting.GetParam("apikey"))
return nil
}
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", setting.GetParam("apikey")))
return nil
}
func (a *Authenticator) canKeyAccessCustomRoute(path string, keyId string) error {
trimed := strings.TrimPrefix(path, "/api/routes")
rc := a.rm.GetRouteFromMemDb(trimed)
if rc == nil {
return internal_errors.NewNotFoundError("route not found")
}
for _, kid := range rc.KeyIds {
if kid == keyId {
return nil
}
}
return internal_errors.NewAuthError("not authorized")
}
func (a *Authenticator) getProviderSettingsThatCanAccessCustomRoute(path string, settings []*provider.Setting) []*provider.Setting {
trimed := strings.TrimPrefix(path, "/api/routes")
rc := a.rm.GetRouteFromMemDb(trimed)
selected := []*provider.Setting{}
if rc == nil {
return []*provider.Setting{}
}
target := map[string]bool{}
for _, s := range rc.Steps {
target[s.Provider] = true
}
source := map[string]*provider.Setting{}
for _, s := range settings {
source[s.Provider] = s
}
for p := range target {
if source[p] == nil {
return []*provider.Setting{}
}
selected = append(selected, source[p])
}
return selected
}
func canAccessPath(provider string, path string) bool {
if provider == "openai" && !strings.HasPrefix(path, "/api/providers/openai") {
return false
}
if provider == "azure" && !strings.HasPrefix(path, "/api/providers/azure/openai") {
return false
}
if provider == "anthropic" && !strings.HasPrefix(path, "/api/providers/anthropic") {
return false
}
return true
}
func (a *Authenticator) AuthenticateHttpRequest(req *http.Request) (*key.ResponseKey, []*provider.Setting, error) {
raw, err := getApiKey(req)
if err != nil {
return nil, nil, err
}
hash := encrypter.Encrypt(raw)
key := a.kms.GetKey(hash)
if key == nil || key.Revoked {
return nil, nil, internal_errors.NewAuthError("not authorized")
}
if strings.HasPrefix(req.URL.Path, "/api/routes") {
err = a.canKeyAccessCustomRoute(req.URL.Path, key.KeyId)
if err != nil {
return nil, nil, err
}
}
settingIds := key.GetSettingIds()
allSettings := []*provider.Setting{}
selected := []*provider.Setting{}
for _, settingId := range settingIds {
setting, err := a.psm.GetSetting(settingId)
if err != nil {
return nil, nil, err
}
if canAccessPath(setting.Provider, req.URL.Path) {
selected = append(selected, setting)
}
allSettings = append(allSettings, setting)
}
if strings.HasPrefix(req.URL.Path, "/api/routes") {
selected = a.getProviderSettingsThatCanAccessCustomRoute(req.URL.Path, allSettings)
if len(selected) == 0 {
return nil, nil, internal_errors.NewAuthError("provider settings associated with the key are not compatible with the route")
}
}
if len(selected) != 0 {
err := rewriteHttpAuthHeader(req, selected[0])
if err != nil {
return nil, nil, err
}
return key, selected, nil
}
return nil, nil, internal_errors.NewAuthError("provider setting not found")
}