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

internal/service/registry_service.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"github.com/modelcontextprotocol/registry/internal/config"
 	"github.com/modelcontextprotocol/registry/internal/database"
 	"github.com/modelcontextprotocol/registry/internal/validators"
 	apiv0 "github.com/modelcontextprotocol/registry/pkg/api/v0"
@@ -16,13 +17,15 @@ const maxServerVersionsPerServer = 10000
 
 // registryServiceImpl implements the RegistryService interface using our Database
 type registryServiceImpl struct {
-	db database.Database
+	db  database.Database
+	cfg *config.Config
 }
 
-// NewRegistryServiceWithDB creates a new registry service with the provided database
-func NewRegistryServiceWithDB(db database.Database) RegistryService {
+// NewRegistryService creates a new registry service with the provided database
+func NewRegistryService(db database.Database, cfg *config.Config) RegistryService {
 	return &registryServiceImpl{
-		db: db,
+		db:  db,
+		cfg: cfg,
 	}
 }
 
@@ -74,7 +77,7 @@ func (s *registryServiceImpl) Publish(req apiv0.ServerJSON) (*apiv0.ServerJSON,
 	defer cancel()
 
 	// Validate the request
-	if err := validators.ValidatePublishRequest(req); err != nil {
+	if err := validators.ValidatePublishRequest(req, s.cfg); err != nil {
 		return nil, err
 	}
 
@@ -204,7 +207,7 @@ func (s *registryServiceImpl) EditServer(id string, req apiv0.ServerJSON) (*apiv
 	defer cancel()
 
 	// Validate the request
-	if err := validators.ValidatePublishRequest(req); err != nil {
+	if err := validators.ValidatePublishRequest(req, s.cfg); err != nil {
 		return nil, err
 	}
 

internal/service/registry_service_test.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"testing"
 
+	"github.com/modelcontextprotocol/registry/internal/config"
 	"github.com/modelcontextprotocol/registry/internal/database"
 	apiv0 "github.com/modelcontextprotocol/registry/pkg/api/v0"
 	"github.com/modelcontextprotocol/registry/pkg/model"
@@ -38,7 +39,7 @@ func TestValidateNoDuplicateRemoteURLs(t *testing.T) {
 	}
 
 	memDB := database.NewMemoryDB()
-	service := NewRegistryServiceWithDB(memDB)
+	service := NewRegistryService(memDB, &config.Config{EnableRegistryValidation: false})
 
 	for _, server := range existingServers {
 		_, err := service.Publish(*server)