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Hook into the JSON schema loader to load needed schemas from embedding.

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This commit is contained in:
Sascha L. Teichmann 2021-12-03 03:53:06 +01:00
parent 8c272fef2a
commit a96597206e
6 changed files with 435 additions and 3 deletions
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42
csaf/validation.go
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@ -4,8 +4,11 @@ import (
"context"
_ "embed"
"encoding/json"
"log"
"net/url"
"sort"
"strings"
"sync"
"github.com/qri-io/jsonschema"
)
@ -13,10 +16,49 @@ import (
//go:embed schema/csaf_json_schema.json
var schema []byte
//go:embed schema/cvss-v2.0.json
var cvss20 []byte
//go:embed schema/cvss-v3.0.json
var cvss30 []byte
//go:embed schema/cvss-v3.1.json
var cvss31 []byte
func embedLoader(ctx context.Context, uri *url.URL, schema *jsonschema.Schema) error {
var data []byte
switch u := uri.String(); u {
case "https://www.first.org/cvss/cvss-v2.0.json":
data = cvss20
case "https://www.first.org/cvss/cvss-v3.0.json":
data = cvss30
case "https://www.first.org/cvss/cvss-v3.1.json":
data = cvss31
default:
log.Printf("escaped schema loader: %s\n", u)
return jsonschema.HTTPSchemaLoader(ctx, uri, schema)
}
if schema == nil {
schema = &jsonschema.Schema{}
}
return json.Unmarshal(data, schema)
}
var registerEmbedLoaderOnce sync.Once
func registerEmbedLoader() {
// Hook into schema loading.
slr := jsonschema.GetSchemaLoaderRegistry()
slr.Register("https", embedLoader)
}
// ValidateCSAF validates the document data against the JSON schema
// of CSAF.
func ValidateCSAF(doc interface{}) ([]string, error) {
registerEmbedLoaderOnce.Do(registerEmbedLoader)
ctx := context.Background()
rs := &jsonschema.Schema{}