1 files changed, 52 insertions, 0 deletions
diff --git a/testing/web-platform/tests/subresource-integrity/tools/generate_javascript.py b/testing/web-platform/tests/subresource-integrity/tools/generate_javascript.py
new file mode 100644
index 000000000..184a39451
--- /dev/null
+++ b/testing/web-platform/tests/subresource-integrity/tools/generate_javascript.py
@@ -0,0 +1,52 @@
+from os import path, listdir
+from hashlib import sha512, sha256, md5
+from base64 import b64encode
+import re
+
+JS_DIR = path.normpath(path.join(__file__, "..", ".."))
+
+'''
+Yield each file in the javascript directory
+'''
+def js_files():
+  for f in listdir(JS_DIR):
+    if path.isfile(f) and f.endswith(".js"):
+      yield f
+
+'''
+URL-safe base64 encode a binary digest and strip any padding.
+'''
+def format_digest(digest):
+  return b64encode(digest)
+
+'''
+Generate an encoded sha512 URI.
+'''
+def sha512_uri(content):
+  return "sha512-%s" % format_digest(sha512(content).digest())
+
+'''
+Generate an encoded sha256 URI.
+'''
+def sha256_uri(content):
+  return "sha256-%s" % format_digest(sha256(content).digest())
+
+'''
+Generate an encoded md5 digest URI.
+'''
+def md5_uri(content):
+  return "md5-%s" % format_digest(md5(content).digest())
+
+def main():
+  for file in js_files():
+    print "Generating content for %s" % file
+    base = path.splitext(path.basename(file))[0]
+    var_name = re.sub(r"[^a-z0-9]", "_", base)
+    content = "%s=true;" % var_name
+    with open(file, "w") as f: f.write(content)
+    print "\tSHA512 integrity: %s" % sha512_uri(content)
+    print "\tSHA256 integrity: %s" % sha256_uri(content)
+    print "\tMD5 integrity:    %s" % md5_uri(content)
+
+if __name__ == "__main__":
+  main()