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immutable: handle another form of share corruption with LayoutInvalid exception instead of AssertionError

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This commit is contained in:
Zooko O'Whielacronx 2009-01-05 17:46:45 -07:00
parent c84bb795f3
commit 206ab2b44d
1 changed files with 6 additions and 1 deletions
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7
src/allmydata/immutable/download.py
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@ -404,7 +404,12 @@ class ValidatedReadBucketProxy(log.PrefixingLogMixin):
if self.share_hash_tree.needed_hashes(self.sharenum):
# This will raise exception if the values being passed do not match the root
# node of self.share_hash_tree.
self.share_hash_tree.set_hashes(sharehashes)
try:
self.share_hash_tree.set_hashes(sharehashes)
except IndexError, le:
# Weird -- sharehashes contained index numbers outside of the range that fit
# into this hash tree.
raise BadOrMissingHash(le)
# To validate a block we need the root of the block hash tree, which is also one of
# the leafs of the share hash tree, and is called "the share hash".