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Merge pull request #559 from jkleint/iterative-md5

Use iterative MD5 hashing.
This commit is contained in:
Michael DeHaan 2012-07-09 11:03:59 -07:00
commit 238e4adba2
4 changed files with 60 additions and 49 deletions

View file

@ -33,11 +33,9 @@ except ImportError:
import simplejson as json import simplejson as json
try: try:
import hashlib from hashlib import md5 as _md5
HAVE_HASHLIB=True
except ImportError: except ImportError:
import md5 from md5 import md5 as _md5
HAVE_HASHLIB=False
from ansible import errors from ansible import errors
import ansible.constants as C import ansible.constants as C
@ -321,13 +319,19 @@ def parse_kv(args):
return options return options
def md5(filename): def md5(filename):
''' compute md5sum, return None if file is not present ''' ''' Return MD5 hex digest of local file, or None if file is not present. '''
if not os.path.exists(filename): if not os.path.exists(filename):
return None return None
if HAVE_HASHLIB: digest = _md5()
return hashlib.md5(file(filename).read()).hexdigest() blocksize = 64 * 1024
else: infile = open(filename, 'rb')
return md5.new(file(filename).read()).hexdigest() block = infile.read(blocksize)
while block:
digest.update(block)
block = infile.read(blocksize)
infile.close()
return digest.hexdigest()
#################################################################### ####################################################################

View file

@ -30,14 +30,10 @@ import syslog
import tempfile import tempfile
try: try:
import hashlib from hashlib import md5 as _md5
HAVE_HASHLIB=True except ImportError:
except ImportError: from md5 import md5 as _md5
import md5
HAVE_HASHLIB=False
# Since hashlib is only available in 2.5 and onwards, this module
# uses md5 which is available in 2.4.
# =========================================== # ===========================================
# Support methods # Support methods
@ -66,13 +62,18 @@ def write_temp_file(data):
return path return path
def md5(filename): def md5(filename):
''' compute md5sum, return None if file is not present ''' ''' Return MD5 hex digest of local file, or None if file is not present. '''
if not os.path.exists(filename): if not os.path.exists(filename):
return None return None
if HAVE_HASHLIB: digest = _md5()
return hashlib.md5(file(filename).read()).hexdigest() blocksize = 64 * 1024
else: infile = open(filename, 'rb')
return md5.new(file(filename).read()).hexdigest() block = infile.read(blocksize)
while block:
digest.update(block)
block = infile.read(blocksize)
infile.close()
return digest.hexdigest()
# =========================================== # ===========================================

View file

@ -25,11 +25,9 @@ import shutil
import syslog import syslog
try: try:
import hashlib from hashlib import md5 as _md5
HAVE_HASHLIB=True except ImportError:
except ImportError: from md5 import md5 as _md5
import md5
HAVE_HASHLIB=False
# =========================================== # ===========================================
# convert arguments of form a=b c=d # convert arguments of form a=b c=d
@ -46,13 +44,18 @@ def exit_kv(rc=0, **kwargs):
sys.exit(rc) sys.exit(rc)
def md5(filename): def md5(filename):
''' compute md5sum, return None if file is not present ''' ''' Return MD5 hex digest of local file, or None if file is not present. '''
if not os.path.exists(filename): if not os.path.exists(filename):
return None return None
if HAVE_HASHLIB: digest = _md5()
return hashlib.md5(file(filename).read()).hexdigest() blocksize = 64 * 1024
else: infile = open(filename, 'rb')
return md5.new(file(filename).read()).hexdigest() block = infile.read(blocksize)
while block:
digest.update(block)
block = infile.read(blocksize)
infile.close()
return digest.hexdigest()
# =========================================== # ===========================================

View file

@ -34,11 +34,9 @@ import traceback
import syslog import syslog
try: try:
import hashlib from hashlib import md5 as _md5
HAVE_HASHLIB=True except ImportError:
except ImportError: from md5 import md5 as _md5
import md5
HAVE_HASHLIB=False
try: try:
import selinux import selinux
@ -319,13 +317,18 @@ def ansible_facts():
return facts return facts
def md5(filename): def md5(filename):
''' compute md5sum, return None if file is not present ''' ''' Return MD5 hex digest of local file, or None if file is not present. '''
if not os.path.exists(filename): if not os.path.exists(filename):
return None return None
if HAVE_HASHLIB: digest = _md5()
return hashlib.md5(file(filename).read()).hexdigest() blocksize = 64 * 1024
else: infile = open(filename, 'rb')
return md5.new(file(filename).read()).hexdigest() block = infile.read(blocksize)
while block:
digest.update(block)
block = infile.read(blocksize)
infile.close()
return digest.hexdigest()
# =========================================== # ===========================================