82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
package registries
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net/http"
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"strings"
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"time"
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"github.com/modelcontextprotocol/registry/pkg/model"
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)
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var (
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ErrMissingIdentifierForNuget = errors.New("package identifier is required for NuGet packages")
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ErrMissingVersionForNuget = errors.New("package version is required for NuGet packages")
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)
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// ValidateNuGet validates that a NuGet package contains the correct MCP server name
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func ValidateNuGet(ctx context.Context, pkg model.Package, serverName string) error {
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// Set default registry base URL if empty
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if pkg.RegistryBaseURL == "" {
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pkg.RegistryBaseURL = model.RegistryURLNuGet
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}
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if pkg.Identifier == "" {
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return ErrMissingIdentifierForNuget
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}
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// Validate that MCPB-specific fields are not present
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if pkg.FileSHA256 != "" {
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return fmt.Errorf("NuGet packages must not have 'fileSha256' field - this is only for MCPB packages")
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}
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// Validate that the registry base URL matches NuGet exactly
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if pkg.RegistryBaseURL != model.RegistryURLNuGet {
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return fmt.Errorf("registry type and base URL do not match: '%s' is not valid for registry type '%s'. Expected: %s",
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pkg.RegistryBaseURL, model.RegistryTypeNuGet, model.RegistryURLNuGet)
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}
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client := &http.Client{Timeout: 10 * time.Second}
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lowerID := strings.ToLower(pkg.Identifier)
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lowerVersion := strings.ToLower(pkg.Version)
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if lowerVersion == "" {
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return ErrMissingVersionForNuget
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}
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// Try to get README from the package
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readmeURL := fmt.Sprintf("%s/v3-flatcontainer/%s/%s/readme", pkg.RegistryBaseURL, lowerID, lowerVersion)
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, readmeURL, nil)
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if err != nil {
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return fmt.Errorf("failed to create request: %w", err)
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}
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req.Header.Set("User-Agent", "MCP-Registry-Validator/1.0")
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resp, err := client.Do(req)
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if err != nil {
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return fmt.Errorf("failed to fetch README from NuGet: %w", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode == http.StatusOK {
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// Check README content
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readmeBytes, err := io.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("failed to read README content: %w", err)
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}
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readmeContent := string(readmeBytes)
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// Check for mcp-name: format (more specific)
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mcpNamePattern := "mcp-name: " + serverName
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if strings.Contains(readmeContent, mcpNamePattern) {
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return nil // Found as mcp-name: format
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}
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}
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return fmt.Errorf("NuGet package '%s' ownership validation failed. The server name '%s' must appear as 'mcp-name: %s' in the package README. Add it to your package README", pkg.Identifier, serverName, serverName)
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}
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