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test/common.py: wrap docstrings to 80cols so I can read them more easily

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This commit is contained in:
Brian Warner 2009-10-05 13:01:43 -07:00
parent 19d336513c
commit 9dba4ec641
1 changed files with 53 additions and 43 deletions
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94
src/allmydata/test/common.py
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@ -1161,18 +1161,18 @@ def _corrupt_nothing(data):
return data
def _corrupt_file_version_number(data):
""" Scramble the file data -- the share file version number have one bit flipped or else
will be changed to a random value."""
"""Scramble the file data -- the share file version number have one bit
flipped or else will be changed to a random value."""
return corrupt_field(data, 0x00, 4)
def _corrupt_size_of_file_data(data):
""" Scramble the file data -- the field showing the size of the share data within the file
will be set to one smaller. """
"""Scramble the file data -- the field showing the size of the share data
within the file will be set to one smaller."""
return corrupt_field(data, 0x04, 4)
def _corrupt_sharedata_version_number(data):
""" Scramble the file data -- the share data version number will have one bit flipped or
else will be changed to a random value, but not 1 or 2."""
"""Scramble the file data -- the share data version number will have one
bit flipped or else will be changed to a random value, but not 1 or 2."""
return corrupt_field(data, 0x0c, 4)
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
@ -1183,8 +1183,8 @@ def _corrupt_sharedata_version_number(data):
return data[:0x0c] + newsharevernumbytes + data[0x0c+4:]
def _corrupt_sharedata_version_number_to_plausible_version(data):
""" Scramble the file data -- the share data version number will
be changed to 2 if it is 1 or else to 1 if it is 2."""
"""Scramble the file data -- the share data version number will be
changed to 2 if it is 1 or else to 1 if it is 2."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1195,8 +1195,8 @@ def _corrupt_sharedata_version_number_to_plausible_version(data):
return data[:0x0c] + newsharevernumbytes + data[0x0c+4:]
def _corrupt_segment_size(data):
""" Scramble the file data -- the field showing the size of the segment will have one
bit flipped or else be changed to a random value. """
"""Scramble the file data -- the field showing the size of the segment
will have one bit flipped or else be changed to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1205,8 +1205,9 @@ def _corrupt_segment_size(data):
return corrupt_field(data, 0x0c+0x04, 8, debug=False)
def _corrupt_size_of_sharedata(data):
""" Scramble the file data -- the field showing the size of the data within the share
data will have one bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field showing the size of the data
within the share data will have one bit flipped or else will be changed
to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1215,8 +1216,9 @@ def _corrupt_size_of_sharedata(data):
return corrupt_field(data, 0x0c+0x0c, 8)
def _corrupt_offset_of_sharedata(data):
""" Scramble the file data -- the field showing the offset of the data within the share
data will have one bit flipped or else be changed to a random value. """
"""Scramble the file data -- the field showing the offset of the data
within the share data will have one bit flipped or else be changed to a
random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1225,8 +1227,9 @@ def _corrupt_offset_of_sharedata(data):
return corrupt_field(data, 0x0c+0x14, 8)
def _corrupt_offset_of_ciphertext_hash_tree(data):
""" Scramble the file data -- the field showing the offset of the ciphertext hash tree
within the share data will have one bit flipped or else be changed to a random value.
"""Scramble the file data -- the field showing the offset of the
ciphertext hash tree within the share data will have one bit flipped or
else be changed to a random value.
"""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
@ -1236,8 +1239,9 @@ def _corrupt_offset_of_ciphertext_hash_tree(data):
return corrupt_field(data, 0x0c+0x24, 8, debug=False)
def _corrupt_offset_of_block_hashes(data):
""" Scramble the file data -- the field showing the offset of the block hash tree within
the share data will have one bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field showing the offset of the block
hash tree within the share data will have one bit flipped or else will be
changed to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1246,9 +1250,10 @@ def _corrupt_offset_of_block_hashes(data):
return corrupt_field(data, 0x0c+0x2c, 8)
def _corrupt_offset_of_block_hashes_to_truncate_crypttext_hashes(data):
""" Scramble the file data -- the field showing the offset of the block hash tree within the
share data will have a multiple of hash size subtracted from it, thus causing the downloader
to download an incomplete crypttext hash tree."""
"""Scramble the file data -- the field showing the offset of the block
hash tree within the share data will have a multiple of hash size
subtracted from it, thus causing the downloader to download an incomplete
crypttext hash tree."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1263,8 +1268,9 @@ def _corrupt_offset_of_block_hashes_to_truncate_crypttext_hashes(data):
return data[:0x0c+0x2c]+newvalstr+data[0x0c+0x2c+8:]
def _corrupt_offset_of_share_hashes(data):
""" Scramble the file data -- the field showing the offset of the share hash tree within
the share data will have one bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field showing the offset of the share
hash tree within the share data will have one bit flipped or else will be
changed to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1273,8 +1279,9 @@ def _corrupt_offset_of_share_hashes(data):
return corrupt_field(data, 0x0c+0x34, 8)
def _corrupt_offset_of_uri_extension(data):
""" Scramble the file data -- the field showing the offset of the uri extension will
have one bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field showing the offset of the uri
extension will have one bit flipped or else will be changed to a random
value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1283,13 +1290,15 @@ def _corrupt_offset_of_uri_extension(data):
return corrupt_field(data, 0x0c+0x3c, 8)
def _corrupt_offset_of_uri_extension_to_force_short_read(data, debug=False):
""" Scramble the file data -- the field showing the offset of the uri extension will be set
to the size of the file minus 3. This means when the client tries to read the length field
from that location it will get a short read -- the result string will be only 3 bytes long,
not the 4 or 8 bytes necessary to do a successful struct.unpack."""
"""Scramble the file data -- the field showing the offset of the uri
extension will be set to the size of the file minus 3. This means when
the client tries to read the length field from that location it will get
a short read -- the result string will be only 3 bytes long, not the 4 or
8 bytes necessary to do a successful struct.unpack."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
# The "-0x0c" in here is to skip the server-side header in the share file, which the client doesn't see when seeking and reading.
# The "-0x0c" in here is to skip the server-side header in the share
# file, which the client doesn't see when seeking and reading.
if sharevernum == 1:
if debug:
log.msg("testing: corrupting offset %d, size %d, changing %d to %d (len(data) == %d)" % (0x2c, 4, struct.unpack(">L", data[0x2c:0x2c+4])[0], len(data)-0x0c-3, len(data)))
@ -1313,8 +1322,8 @@ def _corrupt_mutable_share_data(data):
return corrupt_field(data, start, length)
def _corrupt_share_data(data):
""" Scramble the file data -- the field containing the share data itself will have one
bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field containing the share data itself
will have one bit flipped or else will be changed to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways, not v%d." % sharevernum
if sharevernum == 1:
@ -1327,8 +1336,8 @@ def _corrupt_share_data(data):
return corrupt_field(data, 0x0c+0x44, sharedatasize)
def _corrupt_crypttext_hash_tree(data):
""" Scramble the file data -- the field containing the crypttext hash tree will have one
bit flipped or else will be changed to a random value.
"""Scramble the file data -- the field containing the crypttext hash tree
will have one bit flipped or else will be changed to a random value.
"""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
@ -1342,8 +1351,8 @@ def _corrupt_crypttext_hash_tree(data):
return corrupt_field(data, crypttexthashtreeoffset, blockhashesoffset-crypttexthashtreeoffset)
def _corrupt_block_hashes(data):
""" Scramble the file data -- the field containing the block hash tree will have one bit
flipped or else will be changed to a random value.
"""Scramble the file data -- the field containing the block hash tree
will have one bit flipped or else will be changed to a random value.
"""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
@ -1357,8 +1366,8 @@ def _corrupt_block_hashes(data):
return corrupt_field(data, blockhashesoffset, sharehashesoffset-blockhashesoffset)
def _corrupt_share_hashes(data):
""" Scramble the file data -- the field containing the share hash chain will have one
bit flipped or else will be changed to a random value.
"""Scramble the file data -- the field containing the share hash chain
will have one bit flipped or else will be changed to a random value.
"""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
@ -1372,8 +1381,9 @@ def _corrupt_share_hashes(data):
return corrupt_field(data, sharehashesoffset, uriextoffset-sharehashesoffset)
def _corrupt_length_of_uri_extension(data):
""" Scramble the file data -- the field showing the length of the uri extension will
have one bit flipped or else will be changed to a random value. """
"""Scramble the file data -- the field showing the length of the uri
extension will have one bit flipped or else will be changed to a random
value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1:
@ -1384,8 +1394,8 @@ def _corrupt_length_of_uri_extension(data):
return corrupt_field(data, uriextoffset, 8)
def _corrupt_uri_extension(data):
""" Scramble the file data -- the field containing the uri extension will have one bit
flipped or else will be changed to a random value. """
"""Scramble the file data -- the field containing the uri extension will
have one bit flipped or else will be changed to a random value."""
sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
if sharevernum == 1: