wehub-resource-sync
e04ed9c211
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65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
// Copyright 2026 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"context"
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"net/http"
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"slices"
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"strings"
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"github.com/googleapis/mcp-toolbox/internal/auth"
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"github.com/googleapis/mcp-toolbox/internal/util"
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)
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// ValidateScopes validates if the claims contain all required scopes for a tool call.
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func ValidateScopes(ctx context.Context, toolScopes []string, authServices map[string]auth.AuthService) error {
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// Find MCP enabled auth service
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var mcpEnabled bool
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for _, aS := range authServices {
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if mSvc, ok := aS.(auth.MCPAuthService); ok && mSvc.IsMCPEnabled() {
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mcpEnabled = true
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break
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}
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}
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if mcpEnabled && len(toolScopes) > 0 {
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claims := util.AuthTokenClaimsFromContext(ctx)
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if claims == nil {
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return &auth.MCPAuthError{
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Code: http.StatusForbidden,
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Message: "missing claims for MCP authorization",
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ScopesRequired: toolScopes,
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}
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}
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scopeClaim, _ := claims["scope"].(string)
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tokenScopes := strings.Fields(scopeClaim)
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// Check if all required scopes are present in the token
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for _, ts := range toolScopes {
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if !slices.Contains(tokenScopes, ts) {
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return &auth.MCPAuthError{
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Code: http.StatusForbidden,
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Message: "insufficient scopes for this tool",
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ScopesRequired: toolScopes,
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}
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}
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}
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}
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return nil
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}
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