registry/internal/validators/registries/pypi.go
adam jones 694a4d8879
Add registry validators (#350)
Fixes #96

## Motivation and Context

See #96

## How Has This Been Tested?

Has some unit and integration tests, still needs proper testing of the
different registry types

## Breaking Changes

Yes, new package uploads will need extra verification

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [x] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
2025-09-04 22:45:59 +01:00

70 lines
2.2 KiB
Go

package registries
import (
"context"
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"github.com/modelcontextprotocol/registry/pkg/model"
)
// PyPIPackageResponse represents the structure returned by the PyPI JSON API
type PyPIPackageResponse struct {
Info struct {
Description string `json:"description"`
} `json:"info"`
}
// ValidatePyPI validates that a PyPI package contains the correct MCP server name
func ValidatePyPI(ctx context.Context, pkg model.Package, serverName string) error {
// Set default registry base URL if empty
if pkg.RegistryBaseURL == "" {
pkg.RegistryBaseURL = model.RegistryURLPyPI
}
// Validate that the registry base URL matches PyPI exactly
if pkg.RegistryBaseURL != model.RegistryURLPyPI {
return fmt.Errorf("registry type and base URL do not match: '%s' is not valid for registry type '%s'. Expected: %s",
pkg.RegistryBaseURL, model.RegistryTypePyPI, model.RegistryURLPyPI)
}
client := &http.Client{Timeout: 10 * time.Second}
url := fmt.Sprintf("%s/pypi/%s/json", pkg.RegistryBaseURL, pkg.Identifier)
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
if err != nil {
return fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("User-Agent", "MCP-Registry-Validator/1.0")
req.Header.Set("Accept", "application/json")
resp, err := client.Do(req)
if err != nil {
return fmt.Errorf("failed to fetch package metadata from PyPI: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("PyPI package '%s' not found (status: %d)", pkg.Identifier, resp.StatusCode)
}
var pypiResp PyPIPackageResponse
if err := json.NewDecoder(resp.Body).Decode(&pypiResp); err != nil {
return fmt.Errorf("failed to parse PyPI package metadata: %w", err)
}
// Check description (README) content
description := pypiResp.Info.Description
// Check for mcp-name: format (more specific)
mcpNamePattern := "mcp-name: " + serverName
if strings.Contains(description, mcpNamePattern) {
return nil // Found as mcp-name: format
}
return fmt.Errorf("PyPI package '%s' ownership validation failed. The server name '%s' must appear as 'mcp-name: %s' in the package README", pkg.Identifier, serverName, serverName)
}