def extract(self):
'''extract the snapfile into the snapdirectory
@raises - MissingFileError if the snapfile does not exist
'''
# decrypt the file if we've set a key
if not snap.osregistry.OS.is_windows() and self.encryption_key != None:
if snap.config.options.log_level_at_least('verbose'):
snap.callback.snapcallback.message("Decyrpting snapfile")
Crypto.decrypt_file(self.encryption_key, self.snapfile,
self.snapfile + ".dec")
FileManager.mv(self.snapfile + ".dec", self.snapfile)
# open the tarball
tarball = tarfile.open(self.snapfile)
# temp store the working directory, before changing to the snapdirectory
cwd = os.getcwd()
os.chdir(self.snapdirectory)
# extract files from it
for tarinfo in tarball:
tarball.extract(tarinfo)
# close it out
tarball.close()
if snap.config.options.log_level_at_least('normal'):
snap.callback.snapcallback.message("Snapfile " + self.snapfile +
" opened")
# restore the working directory
os.chdir(cwd)
def testEncryptDecrypt(self):
temp_file_path = os.path.join(os.path.dirname(__file__), "data/cfile")
f = open(temp_file_path, 'w')
f.write("foobar")
f.close()
key = Crypto.generate_key("secret_key")
Crypto.encrypt_file(key, temp_file_path)
self.assertTrue(os.path.exists(temp_file_path + ".enc"))
contents = FileManager.read_file(temp_file_path + ".enc")
# TODO should do a better verification that it's actually encrypted properly
self.assertTrue(contents != "foobar")
os.remove(temp_file_path)
Crypto.decrypt_file(key, temp_file_path + ".enc")
contents = FileManager.read_file(temp_file_path)
self.assertTrue(contents == "foobar")
os.remove(temp_file_path)
os.remove(temp_file_path + ".enc")
def extract(self):
'''extract the snapfile into the snapdirectory
@raises - MissingFileError if the snapfile does not exist
'''
# decrypt the file if we've set a key
if not snap.osregistry.OS.is_windows() and self.encryption_key != None:
if snap.config.options.log_level_at_least('verbose'):
snap.callback.snapcallback.message("Decyrpting snapfile")
Crypto.decrypt_file(self.encryption_key, self.snapfile, self.snapfile + ".dec")
FileManager.mv(self.snapfile + ".dec", self.snapfile)
# open the tarball
tarball = tarfile.open(self.snapfile)
# temp store the working directory, before changing to the snapdirectory
cwd = os.getcwd()
os.chdir(self.snapdirectory)
# extract files from it
for tarinfo in tarball:
tarball.extract(tarinfo)
# close it out
tarball.close()
if snap.config.options.log_level_at_least('normal'):
snap.callback.snapcallback.message("Snapfile " + self.snapfile + " opened")
# restore the working directory
os.chdir(cwd)
def compress(self):
'''create a snapfile from the snapdirectory
@raises - MissingFileError - if the snapfile cannot be created
'''
# if snapfile == '-' write to stdout
snapfileo = None
if self.snapfile == '-':
snapfileo = sys.stdout
else:
snapfileo = open(self.snapfile, 'w')
# create the tarball
tarball = tarfile.open(fileobj=snapfileo, mode="w:gz")
# temp store the working directory, before changing to the snapdirectory
cwd = os.getcwd()
os.chdir(self.snapdirectory)
seperator = snap.osregistry.OS.get_path_seperator()
# copy directories into snapfile
for sdir in FileManager.get_all_subdirectories(os.getcwd(), recursive=True):
partialpath = sdir.replace(self.snapdirectory + seperator, "")
tarball.addfile(self.__prepare_file_for_tarball(tarball, sdir, partialpath))
# copy files into snapfile
for tfile in FileManager.get_all_files(include=[os.getcwd()]):
partialpath = tfile.replace(self.snapdirectory + seperator, "")
if os.path.exists(tfile):
tarball.addfile(self.__prepare_file_for_tarball(tarball, tfile, partialpath), file(tfile, 'rb'))
# finish up tarball creation
tarball.close()
if self.snapfile != '-':
snapfileo.close()
# encrypt the snapshot if we've set a key
if not snap.osregistry.OS.is_windows() and self.encryption_key != None:
if snap.config.options.log_level_at_least('verbose'):
snap.callback.snapcallback.message("Encyrpting snapfile")
Crypto.encrypt_file(self.encryption_key, self.snapfile, self.snapfile + ".enc")
FileManager.mv(self.snapfile + ".enc", self.snapfile)
if snap.config.options.log_level_at_least('normal'):
snap.callback.snapcallback.message("Snapfile " + self.snapfile + " created")
# restore the working directory
os.chdir(cwd)
def compress(self):
'''create a snapfile from the snapdirectory
@raises - MissingFileError - if the snapfile cannot be created
'''
# create the tarball
tarball = tarfile.open(self.snapfile, "w:gz")
# temp store the working directory, before changing to the snapdirectory
cwd = os.getcwd()
os.chdir(self.snapdirectory)
seperator = snap.osregistry.OS.get_path_seperator()
# copy directories into snapfile
for sdir in FileManager.get_all_subdirectories(os.getcwd(),
recursive=True):
partialpath = sdir.replace(self.snapdirectory + seperator, "")
tarball.addfile(
self.__prepare_file_for_tarball(tarball, sdir, partialpath))
# copy files into snapfile
for tfile in FileManager.get_all_files(include=[os.getcwd()]):
partialpath = tfile.replace(self.snapdirectory + seperator, "")
if os.path.exists(tfile):
tarball.addfile(
self.__prepare_file_for_tarball(tarball, tfile,
partialpath),
file(tfile, 'rb'))
# finish up tarball creation
tarball.close()
# encrypt the snapshot if we've set a key
if not snap.osregistry.OS.is_windows() and self.encryption_key != None:
if snap.config.options.log_level_at_least('verbose'):
snap.callback.snapcallback.message("Encyrpting snapfile")
Crypto.encrypt_file(self.encryption_key, self.snapfile,
self.snapfile + ".enc")
FileManager.mv(self.snapfile + ".enc", self.snapfile)
if snap.config.options.log_level_at_least('normal'):
snap.callback.snapcallback.message("Snapfile " + self.snapfile +
" created")
# restore the working directory
os.chdir(cwd)
def __init__(self, snapfile, snapdirectory, encryption_password=None):
'''initialize the snapfile
@param snapfile - the path to the snapfile to create / read
@param snapdirectory - the path to the directory to compress/extract
@param encryption_password - the password to use in the encryption/decryption operations, if set to None encryption will be disabled
@raises - MissingDirError - if the snapdirectory is invalid
'''
if not os.path.isdir(snapdirectory):
raise MissingDirError(snapdirectory + " is an invalid snap working directory ")
self.snapfile = snapfile
self.snapdirectory = snapdirectory
self.encryption_password = encryption_password
if not snap.osregistry.OS.is_windows() and self.encryption_password != None:
self.encryption_key = Crypto.generate_key(self.encryption_password)
else:
self.encryption_key = None
def __init__(self, snapfile, snapdirectory, encryption_password=None):
'''initialize the snapfile
@param snapfile - the path to the snapfile to create / read
@param snapdirectory - the path to the directory to compress/extract
@param encryption_password - the password to use in the encryption/decryption operations, if set to None encryption will be disabled
@raises - MissingDirError - if the snapdirectory is invalid
'''
if not os.path.isdir(snapdirectory):
raise MissingDirError(snapdirectory +
" is an invalid snap working directory ")
self.snapfile = snapfile
self.snapdirectory = snapdirectory
self.encryption_password = encryption_password
if not snap.osregistry.OS.is_windows(
) and self.encryption_password != None:
self.encryption_key = Crypto.generate_key(self.encryption_password)
else:
self.encryption_key = None
