fix(op_crates/web): fix URLSearchParams, malformed url handling (#8092)

Co-authored-by: Evan <c4t@tuta.io>

1 files changed, 10 insertions, 1 deletions

diff --git a/op_crates/web/11_url.js b/op_crates/web/11_url.js
index f2d12f5be..d60f9769a 100644
--- a/op_crates/web/11_url.js
+++ b/op_crates/web/11_url.js
@@ -37,7 +37,16 @@
   }
 
   function decodeSearchParam(p) {
-    return decodeURIComponent(p.replace(/\+/g, " "));
+    const s = p.replaceAll("+", " ");
+    const decoder = new TextDecoder();
+
+    return s.replace(/(%[0-9a-f]{2})+/gi, (matched) => {
+      const buf = new Uint8Array(Math.ceil(matched.length / 3));
+      for (let i = 0, offset = 0; i < matched.length; i += 3, offset += 1) {
+        buf[offset] = parseInt(matched.slice(i + 1, i + 3), 16);
+      }
+      return decoder.decode(buf);
+    });
   }
 
   const urls = new WeakMap();