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Commit01a10ef

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feat(oauth2): implement RFC 9728 Protected Resource Metadata endpoint
- Add OAuth2ProtectedResourceMetadata struct in codersdk/oauth2.go- Implement /.well-known/oauth-protected-resource endpoint handler- Register route in coderd.go for Protected Resource Metadata discovery- Add comprehensive test coverage in oauth2_metadata_test.go- Update OpenAPI documentation and generated API types- Correctly omit bearer_methods_supported field (Coder uses custom auth)- Support MCP OAuth2 compliance requirement for resource server metadataThis implements RFC 9728 OAuth 2.0 Protected Resource Metadata to enableMCP clients to discover resource server capabilities and authorization servers.Change-Id: I089232ae755acf13eb0a7be46944c9eeaaafb75bSigned-off-by: Thomas Kosiewski <tk@coder.com>
1 parent8949808 commit01a10ef

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10 files changed

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‎coderd/apidoc/docs.go‎

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‎coderd/apidoc/swagger.json‎

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‎coderd/coderd.go‎

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@@ -914,6 +914,8 @@ func New(options *Options) *API {
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// OAuth2 metadata endpoint for RFC 8414 discovery
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r.Get("/.well-known/oauth-authorization-server",api.oauth2AuthorizationServerMetadata)
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// OAuth2 protected resource metadata endpoint for RFC 9728 discovery
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r.Get("/.well-known/oauth-protected-resource",api.oauth2ProtectedResourceMetadata)
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// OAuth2 linking routes do not make sense under the /api/v2 path. These are
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// for an external application to use Coder as an OAuth2 provider, not for

‎coderd/httpmw/apikey.go‎

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@@ -738,6 +738,8 @@ func APITokenFromRequest(r *http.Request) string {
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returnheaderValue
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}
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// TODO(ThomasK33): Implement RFC 6750
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return""
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}
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‎coderd/oauth2.go‎

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@@ -417,3 +417,23 @@ func (api *API) oauth2AuthorizationServerMetadata(rw http.ResponseWriter, r *htt
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}
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httpapi.Write(ctx,rw,http.StatusOK,metadata)
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}
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// @Summary OAuth2 protected resource metadata.
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// @ID oauth2-protected-resource-metadata
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// @Produce json
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// @Tags Enterprise
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// @Success 200 {object} codersdk.OAuth2ProtectedResourceMetadata
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// @Router /.well-known/oauth-protected-resource [get]
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func (api*API)oauth2ProtectedResourceMetadata(rw http.ResponseWriter,r*http.Request) {
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ctx:=r.Context()
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metadata:= codersdk.OAuth2ProtectedResourceMetadata{
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Resource:api.AccessURL.String(),
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AuthorizationServers: []string{api.AccessURL.String()},
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// TODO: Implement scope system based on RBAC permissions
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ScopesSupported: []string{},
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// Note: Coder uses custom authentication methods, not RFC 6750 bearer tokens
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// TODO(ThomasK33): Implement RFC 6750
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// BearerMethodsSupported: []string{}, // Omitted - no standard bearer token support
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}
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httpapi.Write(ctx,rw,http.StatusOK,metadata)
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}

‎coderd/oauth2_metadata_test.go‎

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@@ -17,12 +17,16 @@ func TestOAuth2AuthorizationServerMetadata(t *testing.T) {
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t.Parallel()
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client:=coderdtest.New(t,nil)
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serverURL:=client.URL
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ctx,cancel:=context.WithTimeout(context.Background(),testutil.WaitLong)
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defercancel()
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// Get the metadata
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resp,err:=client.Request(ctx,http.MethodGet,"/.well-known/oauth-authorization-server",nil)
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// Use a plain HTTP client since this endpoint doesn't require authentication
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req,err:=http.NewRequestWithContext(ctx,http.MethodGet,serverURL.String()+"/.well-known/oauth-authorization-server",nil)
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require.NoError(t,err)
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resp,err:=http.DefaultClient.Do(req)
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require.NoError(t,err)
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deferresp.Body.Close()
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@@ -41,3 +45,39 @@ func TestOAuth2AuthorizationServerMetadata(t *testing.T) {
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require.Contains(t,metadata.GrantTypesSupported,"refresh_token")
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require.Contains(t,metadata.CodeChallengeMethodsSupported,"S256")
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}
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funcTestOAuth2ProtectedResourceMetadata(t*testing.T) {
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t.Parallel()
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client:=coderdtest.New(t,nil)
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serverURL:=client.URL
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ctx,cancel:=context.WithTimeout(context.Background(),testutil.WaitLong)
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defercancel()
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// Use a plain HTTP client since this endpoint doesn't require authentication
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req,err:=http.NewRequestWithContext(ctx,http.MethodGet,serverURL.String()+"/.well-known/oauth-protected-resource",nil)
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require.NoError(t,err)
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resp,err:=http.DefaultClient.Do(req)
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require.NoError(t,err)
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deferresp.Body.Close()
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require.Equal(t,http.StatusOK,resp.StatusCode)
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varmetadata codersdk.OAuth2ProtectedResourceMetadata
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err=json.NewDecoder(resp.Body).Decode(&metadata)
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require.NoError(t,err)
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// Verify the metadata
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require.NotEmpty(t,metadata.Resource)
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require.NotEmpty(t,metadata.AuthorizationServers)
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require.Len(t,metadata.AuthorizationServers,1)
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require.Equal(t,metadata.Resource,metadata.AuthorizationServers[0])
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// BearerMethodsSupported is omitted since Coder uses custom authentication methods
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// Standard RFC 6750 bearer tokens are not supported
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require.True(t,len(metadata.BearerMethodsSupported)==0)
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// ScopesSupported can be empty until scope system is implemented
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// Empty slice is marshaled as empty array, but can be nil when unmarshaled
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require.True(t,len(metadata.ScopesSupported)==0)
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}

‎codersdk/oauth2.go‎

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@@ -244,3 +244,11 @@ type OAuth2AuthorizationServerMetadata struct {
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ScopesSupported []string`json:"scopes_supported,omitempty"`
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TokenEndpointAuthMethodsSupported []string`json:"token_endpoint_auth_methods_supported,omitempty"`
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}
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// OAuth2ProtectedResourceMetadata represents RFC 9728 OAuth 2.0 Protected Resource Metadata
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typeOAuth2ProtectedResourceMetadatastruct {
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Resourcestring`json:"resource"`
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AuthorizationServers []string`json:"authorization_servers"`
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ScopesSupported []string`json:"scopes_supported,omitempty"`
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BearerMethodsSupported []string`json:"bearer_methods_supported,omitempty"`
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}

‎docs/reference/api/enterprise.md‎

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‎docs/reference/api/schemas.md‎

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‎site/src/api/typesGenerated.ts‎

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