Detect invalid content (#458)

Author: lutzroeder

source/ncnn.js

@@ -39,9 +39,6 @@ ncnn.ModelFactory = class {
             }
         }
         if (identifier.endsWith('.bin') || identifier.endsWith('.weights.ncnn')) {
-            if (identifier == 'snapshot_blob.bin' || identifier === 'v8_context_snapshot.bin') {
-                return undefined;
-            }
             const stream = context.stream;
             if (stream.length > 4) {
                 const buffer = stream.peek(4);

source/openvino.js

@@ -8,9 +8,6 @@ openvino.ModelFactory = class {
         const identifier = context.identifier;
         const extension = identifier.split('.').pop().toLowerCase();
         if (extension === 'bin') {
-            if (identifier === 'natives_blob.bin' || identifier === 'snapshot_blob.bin' || identifier === 'v8_context_snapshot.bin') {
-                return undefined;
-            }
             const stream = context.stream;
             const signature = [ 0x21, 0xA8, 0xEF, 0xBE, 0xAD, 0xDE ];
             if (signature.length <= stream.length && stream.peek(signature.length).every((value, index) => value === signature[index])) {

source/view.js

@@ -5584,6 +5584,9 @@ view.ModelFactoryService = class {
                 { name: 'TSD header', value: /^%TSD-Header-###%/ },
                 { name: 'AppleDouble data', value: /^\x00\x05\x16\x07/ },
                 { name: 'TensorFlow Hub module', value: /^\x08\x03$/, identifier: 'tfhub_module.pb' },
+                { name: 'V8 snapshot', value: /^.\x00\x00\x00.\x00\x00\x00/, identifier: 'snapshot_blob.bin' },
+                { name: 'V8 context snapshot', value: /^.\x00\x00\x00.\x00\x00\x00/, identifier: 'v8_context_snapshot.bin' },
+                { name: 'V8 natives blob', value: /^./, identifier: 'natives_blob.bin' },
                 { name: 'ViSQOL model', value: /^svm_type\s/ },
                 { name: 'SenseTime model', value: /^STEF/ }
             ];