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# Windows Azure Linux Agent
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# Copyright 2014 Microsoft Corporation
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Requires Python 2.4+ and Openssl 1.0+
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def FindFirstNode(xmlDoc, selector):
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nodes = FindAllNodes(xmlDoc, selector)
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def FindAllNodes(xmlDoc, selector):
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nodes = xmlDoc.findall(selector)
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def GetNodeTextData(a):
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Filter non-text nodes from DOM tree
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for b in a.childNodes:
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if b.nodeType == b.TEXT_NODE:
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def Unpack(buf, offset, range):
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Unpack bytes into python values.
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result = (result << 8) | Ord(buf[offset + i])
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def UnpackLittleEndian(buf, offset, length):
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Unpack little endian bytes into python values.
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return Unpack(buf, offset, list(range(length - 1, -1, -1)))
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def UnpackBigEndian(buf, offset, length):
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Unpack big endian bytes into python values.
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return Unpack(buf, offset, list(range(0, length)))
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def HexDump3(buf, offset, length):
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Dump range of buf in formatted hex.
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return ''.join(['%02X' % Ord(char) for char in buf[offset:offset + length]])
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Dump buf in formatted hex.
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return HexDump3(buf, 0, len(buf))
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def IsInRangeInclusive(a, low, high):
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Return True if 'a' in 'low' <= a >= 'high'
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return (a >= low and a <= high)
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Return True if character is displayable.
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return (IsInRangeInclusive(ch, Ord('A'), Ord('Z'))
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or IsInRangeInclusive(ch, Ord('a'), Ord('z'))
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or IsInRangeInclusive(ch, Ord('0'), Ord('9')))
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def HexDump(buffer, size):
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Return Hex formated dump of a 'buffer' of 'size'.
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for i in range(0, size):
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result += "%06X: " % i
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byte = ord(byte.decode('latin1'))
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result += "%02X " % byte
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if ((i + 1) % 16) == 0 or (i + 1) == size:
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while ((j + 1) % 16) != 0:
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for j in range(i - (i % 16), i + 1):
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if type(byte) == str:
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byte = ord(byte.decode('latin1'))
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if IsPrintable(byte):
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Allows indexing into a string or an array of integers transparently.
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Generic utility function.
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if type(a) == type("a"):
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def CompareBytes(a, b, start, length):
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for offset in range(start, start + length):
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if Ord(a[offset]) != Ord(b[offset]):
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def IntegerToIpAddressV4String(a):
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Build DHCP request string.
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return "%u.%u.%u.%u" % ((a >> 24) & 0xFF,
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uni = unicode(val, 'utf-8', errors='ignore')
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raise ValueError('<Unsupported charset>')
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return uni.encode('ascii', 'backslashreplace')
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def HexStringToByteArray(a):
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Return hex string packed into a binary struct.
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for c in range(0, len(a) // 2):
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b += struct.pack("B", int(a[c * 2:c * 2 + 2], 16))
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def SetSshConfig(config, name, val):
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for i in range(0, len(config)):
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if config[i].startswith(name):
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config[i] = "{0} {1}".format(name, val)
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elif config[i].startswith("Match"):
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#Match block must be put in the end of sshd config
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config.insert(i, "{0} {1}".format(name, val))
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if ord(c[0]) > 128 and ord(c[1]) > 128 and ord(c[2]) > 128:
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def GetPasswordHash(password, useSalt, saltType, saltLength):
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collection = string.ascii_letters + string.digits
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salt = ''.join(random.choice(collection) for _ in range(saltLength))
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salt = "${0}${1}".format(saltType, salt)
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return crypt.crypt(password, salt)
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def NumberToBytes(i):
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Pack number into bytes. Retun as string.
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result.append(chr(i & 0xFF))
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return ''.join(result)
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Return string representation of bits in a.
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c = c | (bit << index)
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s = s + struct.pack('>B', c)
added
removed
azurelinuxagent/utils/textutil.py
