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Add hash of current state to events
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parent
3b4dec442d
commit
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@ -75,6 +75,7 @@ class SynapseEvent(JsonEncodedObject):
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"signatures",
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"signatures",
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"prev_state",
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"prev_state",
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"auth_events",
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"auth_events",
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"state_hash",
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]
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]
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required_keys = [
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required_keys = [
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@ -45,7 +45,7 @@ def check_event_content_hash(event, hash_algorithm=hashlib.sha256):
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def _compute_content_hash(event, hash_algorithm):
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def _compute_content_hash(event, hash_algorithm):
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event_json = event.get_full_dict()
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event_json = event.get_full_dict()
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#TODO: We need to sign the JSON that is going out via fedaration.
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# TODO: We need to sign the JSON that is going out via fedaration.
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event_json.pop("age_ts", None)
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event_json.pop("age_ts", None)
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event_json.pop("unsigned", None)
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event_json.pop("unsigned", None)
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event_json.pop("signatures", None)
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event_json.pop("signatures", None)
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@ -81,6 +81,15 @@ def compute_event_signature(event, signature_name, signing_key):
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def add_hashes_and_signatures(event, signature_name, signing_key,
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def add_hashes_and_signatures(event, signature_name, signing_key,
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hash_algorithm=hashlib.sha256):
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hash_algorithm=hashlib.sha256):
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if hasattr(event, "old_state_events"):
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state_json_bytes = encode_canonical_json(
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[e.event_id for e in event.old_state_events.values()]
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)
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hashed = hash_algorithm(state_json_bytes)
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event.state_hash = {
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hashed.name: encode_base64(hashed.digest())
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}
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hashed = _compute_content_hash(event, hash_algorithm=hash_algorithm)
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hashed = _compute_content_hash(event, hash_algorithm=hash_algorithm)
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if not hasattr(event, "hashes"):
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if not hasattr(event, "hashes"):
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