initial commit

check.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+import requests
+import json
+
+# hex checksum = file name
+# https://www.npmjs.com/package/darcyclarke-manifest-pkg/v/2.1.15/index
+# use hex to get *actual* manifest:
+# https://www.npmjs.com/package/darcyclarke-manifest-pkg/file/a1c6250cb3f94bb3487c1bfb673d279642208b5db39a6c052a5c764f0d1abea5
+
+def get_registry_manifest(pkg):
+    url = 'https://registry.npmjs.com/' + pkg + '/'
+    r = requests.get(url) 
+    return(r.text)
+
+def parse_manifest(manifest):
+    # parse the manifest which represents the values from the frontend
+    parsed = json.loads(manifest)
+
+    # extract latest package version
+    latest_ver = parsed['dist-tags']['latest']
+    latest_manifest = parsed['versions'][latest_ver]
+
+    dependencies = parsed['versions'][latest_ver]['dependencies']
+
+    # extract number of dependencies
+    print('latest version: {}'.format(latest_ver))
+    return latest_ver, dependencies
+
+def get_actual_manifest(pkg, ver):
+    index_url = 'https://www.npmjs.com/package/' + pkg + '/v/' + ver + '/index'
+    index = json.loads(requests.get(index_url).text)
+    hexsum = index['files']['/package.json']['hex']
+    print('hex checksum: {}'.format(hexsum))
+    manifest_url = 'https://www.npmjs.com/package/{}/file/{}'.format(pkg, hexsum)
+    manifest = json.loads(requests.get(manifest_url).text)
+    dependencies = manifest['dependencies']
+    return dependencies
+
+
+ 
+def main():
+    import sys
+    pkg = sys.argv[1]
+    manifest = get_registry_manifest(pkg)
+    ver, reported_dependencies = parse_manifest(manifest)
+    actual_dependencies = get_actual_manifest(pkg, ver)
+    if actual_dependencies != reported_dependencies:
+        print('Dependency mismatch detected for {}!'.format(pkg))
+        print('Reported dependencies: {}'.format(reported_dependencies))
+        print('Actual dependencies: {}'.format(actual_dependencies))
+    else:
+        print('No mismatch detected for {}.'.format(pkg))
+
+
+if __name__ == '__main__':
+    main()