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Check extract_version when opening a zipfile.

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This commit is contained in:
Martin v. Löwis 2012-05-01 14:08:22 +02:00
parent 67c1444454
commit d099b56be7
2 changed files with 15 additions and 0 deletions
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5
Lib/zipfile.py
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@ -57,6 +57,8 @@ ZIP_BZIP2 = 12
DEFAULT_VERSION = 20
ZIP64_VERSION = 45
BZIP2_VERSION = 46
# we recognize (but not necessarily support) all features up to that version
MAX_EXTRACT_VERSION = 46
# Below are some formats and associated data for reading/writing headers using
# the struct module. The names and structures of headers/records are those used
@ -920,6 +922,9 @@ class ZipFile:
(x.create_version, x.create_system, x.extract_version, x.reserved,
x.flag_bits, x.compress_type, t, d,
x.CRC, x.compress_size, x.file_size) = centdir[1:12]
if x.extract_version > MAX_EXTRACT_VERSION:
raise NotImplementedError("zip file version %.1f" %
(x.extract_version / 10))
x.volume, x.internal_attr, x.external_attr = centdir[15:18]
# Convert date/time code to (year, month, day, hour, min, sec)
x._raw_time = t