fix: oom exceptions for OPDS, KOSync, and OTA via wolfssl (#2475)

scripts/patch_wolfssl.py

@@ -0,0 +1,29 @@
+from pathlib import Path
+
+Import("env")
+
+
+PROJECT_DIR = Path(env.subst("$PROJECT_DIR"))
+MARKER = "/* CrossPoint wolfSSL compatibility overrides */"
+OVERRIDES = f"""
+
+{MARKER}
+#undef NO_DH
+#ifndef HAVE_FFDHE_2048
+#define HAVE_FFDHE_2048
+#endif
+#undef FP_MAX_BITS
+#define FP_MAX_BITS 16384
+"""
+
+
+def patch_user_settings(path: Path) -> None:
+    text = path.read_text()
+    if MARKER in text:
+        text = text.split(MARKER, 1)[0].rstrip()
+    path.write_text(text + OVERRIDES + "\n")
+    print(f"Patched wolfSSL settings: {path.relative_to(PROJECT_DIR)}")
+
+
+for settings in PROJECT_DIR.glob(".pio/libdeps/*/Arduino-wolfSSL/src/user_settings.h"):
+    patch_user_settings(settings)