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fix(drm): update PlayReady KID extraction for pyplayready 0.8.3 compatibility

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Replace removed `WrmHeader.read_attributes()` with `key_ids` property and add missing WRMHEADER v4.1-v4.3 XML paths (`DATA/PROTECTINFO/...`) to the base64 PSSH parser fallback.
This commit is contained in:
Andy
2026-02-27 16:54:23 -07:00
parent 08269bef60
commit d8a362c853
1 changed files with 33 additions and 8 deletions
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41
unshackle/core/drm/playready.py
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@@ -44,16 +44,15 @@ class PlayReady:
else:
kids = []
# Extract KIDs using pyplayready's method (may miss some KIDs)
# Extract KIDs using pyplayready's WrmHeader key_ids
if not kids:
for header in pssh.wrm_headers:
try:
signed_ids, _, _, _ = header.read_attributes()
except Exception:
continue
for signed_id in signed_ids:
for signed_key_id in getattr(header, "key_ids", []):
try:
kids.append(UUID(bytes_le=base64.b64decode(signed_id.value)))
if isinstance(signed_key_id.value, UUID):
kids.append(signed_key_id.value)
else:
kids.append(UUID(bytes_le=base64.b64decode(signed_key_id.value)))
except Exception:
continue
@@ -119,7 +118,33 @@ class PlayReady:
except Exception:
pass
# Also get individual KID
# v4.2/v4.3: DATA/PROTECTINFO/KIDS/KID
protectinfo_kids = root.findall(".//pr:DATA/pr:PROTECTINFO/pr:KIDS/pr:KID", ns)
for kid_elem in protectinfo_kids:
value = kid_elem.get("VALUE")
if value:
try:
kid_bytes = base64.b64decode(value + "==")
kid_uuid = UUID(bytes_le=kid_bytes)
if kid_uuid not in kids:
kids.append(kid_uuid)
except Exception:
pass
# v4.1: DATA/PROTECTINFO/KID
protectinfo_kid = root.findall(".//pr:DATA/pr:PROTECTINFO/pr:KID", ns)
for kid_elem in protectinfo_kid:
value = kid_elem.get("VALUE")
if value:
try:
kid_bytes = base64.b64decode(value + "==")
kid_uuid = UUID(bytes_le=kid_bytes)
if kid_uuid not in kids:
kids.append(kid_uuid)
except Exception:
pass
# v4.0: DATA/KID
individual_kids = root.findall(".//pr:DATA/pr:KID", ns)
for kid_elem in individual_kids:
if kid_elem.text: