root / lib / netutils.py @ 8a69b3a8
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1 | a744b676 | Manuel Franceschini | #
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2 | a744b676 | Manuel Franceschini | #
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3 | a744b676 | Manuel Franceschini | |
4 | a744b676 | Manuel Franceschini | # Copyright (C) 2010 Google Inc.
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5 | a744b676 | Manuel Franceschini | #
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6 | a744b676 | Manuel Franceschini | # This program is free software; you can redistribute it and/or modify
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7 | a744b676 | Manuel Franceschini | # it under the terms of the GNU General Public License as published by
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8 | a744b676 | Manuel Franceschini | # the Free Software Foundation; either version 2 of the License, or
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9 | a744b676 | Manuel Franceschini | # (at your option) any later version.
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10 | a744b676 | Manuel Franceschini | #
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11 | a744b676 | Manuel Franceschini | # This program is distributed in the hope that it will be useful, but
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12 | a744b676 | Manuel Franceschini | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a744b676 | Manuel Franceschini | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a744b676 | Manuel Franceschini | # General Public License for more details.
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15 | a744b676 | Manuel Franceschini | #
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16 | a744b676 | Manuel Franceschini | # You should have received a copy of the GNU General Public License
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17 | a744b676 | Manuel Franceschini | # along with this program; if not, write to the Free Software
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18 | a744b676 | Manuel Franceschini | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a744b676 | Manuel Franceschini | # 02110-1301, USA.
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20 | a744b676 | Manuel Franceschini | |
21 | a744b676 | Manuel Franceschini | |
22 | a744b676 | Manuel Franceschini | """Ganeti network utility module.
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23 | a744b676 | Manuel Franceschini |
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24 | a744b676 | Manuel Franceschini | This module holds functions that can be used in both daemons (all) and
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25 | a744b676 | Manuel Franceschini | the command line scripts.
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26 | a744b676 | Manuel Franceschini |
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27 | a744b676 | Manuel Franceschini | """
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28 | a744b676 | Manuel Franceschini | |
29 | a744b676 | Manuel Franceschini | |
30 | a744b676 | Manuel Franceschini | import errno |
31 | 37531236 | Andrea Spadaccini | import os |
32 | a744b676 | Manuel Franceschini | import re |
33 | a744b676 | Manuel Franceschini | import socket |
34 | a744b676 | Manuel Franceschini | import struct |
35 | a744b676 | Manuel Franceschini | import IN |
36 | 37531236 | Andrea Spadaccini | import logging |
37 | a744b676 | Manuel Franceschini | |
38 | a744b676 | Manuel Franceschini | from ganeti import constants |
39 | a744b676 | Manuel Franceschini | from ganeti import errors |
40 | 37531236 | Andrea Spadaccini | from ganeti import utils |
41 | a744b676 | Manuel Franceschini | |
42 | a744b676 | Manuel Franceschini | # Structure definition for getsockopt(SOL_SOCKET, SO_PEERCRED, ...):
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43 | a744b676 | Manuel Franceschini | # struct ucred { pid_t pid; uid_t uid; gid_t gid; };
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44 | a744b676 | Manuel Franceschini | #
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45 | a744b676 | Manuel Franceschini | # The GNU C Library defines gid_t and uid_t to be "unsigned int" and
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46 | a744b676 | Manuel Franceschini | # pid_t to "int".
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47 | a744b676 | Manuel Franceschini | #
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48 | a744b676 | Manuel Franceschini | # IEEE Std 1003.1-2008:
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49 | a744b676 | Manuel Franceschini | # "nlink_t, uid_t, gid_t, and id_t shall be integer types"
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50 | a744b676 | Manuel Franceschini | # "blksize_t, pid_t, and ssize_t shall be signed integer types"
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51 | a744b676 | Manuel Franceschini | _STRUCT_UCRED = "iII"
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52 | a744b676 | Manuel Franceschini | _STRUCT_UCRED_SIZE = struct.calcsize(_STRUCT_UCRED) |
53 | a744b676 | Manuel Franceschini | |
54 | 37531236 | Andrea Spadaccini | # Regexes used to find IP addresses in the output of ip.
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55 | 37531236 | Andrea Spadaccini | _IP_RE_TEXT = r"[.:a-z0-9]+" # separate for testing purposes |
56 | 37531236 | Andrea Spadaccini | _IP_FAMILY_RE = re.compile(r"(?P<family>inet6?)\s+(?P<ip>%s)/" % _IP_RE_TEXT,
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57 | 37531236 | Andrea Spadaccini | re.IGNORECASE) |
58 | 37531236 | Andrea Spadaccini | |
59 | 37531236 | Andrea Spadaccini | # Dict used to convert from a string representing an IP family to an IP
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60 | 37531236 | Andrea Spadaccini | # version
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61 | e687ec01 | Michael Hanselmann | _NAME_TO_IP_VER = { |
62 | 37531236 | Andrea Spadaccini | "inet": constants.IP4_VERSION,
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63 | 37531236 | Andrea Spadaccini | "inet6": constants.IP6_VERSION,
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64 | 37531236 | Andrea Spadaccini | } |
65 | 37531236 | Andrea Spadaccini | |
66 | 37531236 | Andrea Spadaccini | |
67 | 37531236 | Andrea Spadaccini | def _GetIpAddressesFromIpOutput(ip_output): |
68 | 37531236 | Andrea Spadaccini | """Parses the output of the ip command and retrieves the IP addresses and
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69 | 37531236 | Andrea Spadaccini | version.
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70 | 37531236 | Andrea Spadaccini |
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71 | 37531236 | Andrea Spadaccini | @param ip_output: string containing the output of the ip command;
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72 | 37531236 | Andrea Spadaccini | @rtype: dict; (int, list)
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73 | 37531236 | Andrea Spadaccini | @return: a dict having as keys the IP versions and as values the
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74 | 37531236 | Andrea Spadaccini | corresponding list of addresses found in the IP output.
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75 | 37531236 | Andrea Spadaccini |
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76 | 37531236 | Andrea Spadaccini | """
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77 | 37531236 | Andrea Spadaccini | addr = dict((i, []) for i in _NAME_TO_IP_VER.values()) |
78 | 37531236 | Andrea Spadaccini | |
79 | 37531236 | Andrea Spadaccini | for row in ip_output.splitlines(): |
80 | 37531236 | Andrea Spadaccini | match = _IP_FAMILY_RE.search(row) |
81 | 37531236 | Andrea Spadaccini | if match and IPAddress.IsValid(match.group("ip")): |
82 | 37531236 | Andrea Spadaccini | addr[_NAME_TO_IP_VER[match.group("family")]].append(match.group("ip")) |
83 | 37531236 | Andrea Spadaccini | |
84 | 37531236 | Andrea Spadaccini | return addr
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85 | 37531236 | Andrea Spadaccini | |
86 | a744b676 | Manuel Franceschini | |
87 | a744b676 | Manuel Franceschini | def GetSocketCredentials(sock): |
88 | a744b676 | Manuel Franceschini | """Returns the credentials of the foreign process connected to a socket.
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89 | a744b676 | Manuel Franceschini |
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90 | a744b676 | Manuel Franceschini | @param sock: Unix socket
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91 | a744b676 | Manuel Franceschini | @rtype: tuple; (number, number, number)
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92 | a744b676 | Manuel Franceschini | @return: The PID, UID and GID of the connected foreign process.
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93 | a744b676 | Manuel Franceschini |
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94 | a744b676 | Manuel Franceschini | """
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95 | a744b676 | Manuel Franceschini | peercred = sock.getsockopt(socket.SOL_SOCKET, IN.SO_PEERCRED, |
96 | a744b676 | Manuel Franceschini | _STRUCT_UCRED_SIZE) |
97 | a744b676 | Manuel Franceschini | return struct.unpack(_STRUCT_UCRED, peercred)
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98 | a744b676 | Manuel Franceschini | |
99 | a744b676 | Manuel Franceschini | |
100 | 37531236 | Andrea Spadaccini | def IsValidInterface(ifname): |
101 | 37531236 | Andrea Spadaccini | """Validate an interface name.
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102 | 37531236 | Andrea Spadaccini |
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103 | 37531236 | Andrea Spadaccini | @type ifname: string
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104 | 37531236 | Andrea Spadaccini | @param ifname: Name of the network interface
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105 | 37531236 | Andrea Spadaccini | @return: boolean indicating whether the interface name is valid or not.
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106 | 37531236 | Andrea Spadaccini |
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107 | 37531236 | Andrea Spadaccini | """
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108 | 37531236 | Andrea Spadaccini | return os.path.exists(utils.PathJoin("/sys/class/net", ifname)) |
109 | 37531236 | Andrea Spadaccini | |
110 | 37531236 | Andrea Spadaccini | |
111 | 37531236 | Andrea Spadaccini | def GetInterfaceIpAddresses(ifname): |
112 | 37531236 | Andrea Spadaccini | """Returns the IP addresses associated to the interface.
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113 | 37531236 | Andrea Spadaccini |
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114 | 37531236 | Andrea Spadaccini | @type ifname: string
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115 | 37531236 | Andrea Spadaccini | @param ifname: Name of the network interface
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116 | 37531236 | Andrea Spadaccini | @return: A dict having for keys the IP version (either
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117 | 37531236 | Andrea Spadaccini | L{constants.IP4_VERSION} or L{constants.IP6_VERSION}) and for
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118 | 37531236 | Andrea Spadaccini | values the lists of IP addresses of the respective version
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119 | 37531236 | Andrea Spadaccini | associated to the interface
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120 | 37531236 | Andrea Spadaccini |
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121 | 37531236 | Andrea Spadaccini | """
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122 | 37531236 | Andrea Spadaccini | result = utils.RunCmd([constants.IP_COMMAND_PATH, "-o", "addr", "show", |
123 | 37531236 | Andrea Spadaccini | ifname]) |
124 | 37531236 | Andrea Spadaccini | |
125 | 37531236 | Andrea Spadaccini | if result.failed:
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126 | 37531236 | Andrea Spadaccini | logging.error("Error running the ip command while getting the IP"
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127 | 37531236 | Andrea Spadaccini | " addresses of %s", ifname)
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128 | 37531236 | Andrea Spadaccini | return None |
129 | 37531236 | Andrea Spadaccini | |
130 | 37531236 | Andrea Spadaccini | return _GetIpAddressesFromIpOutput(result.output)
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131 | 37531236 | Andrea Spadaccini | |
132 | 37531236 | Andrea Spadaccini | |
133 | b705c7a6 | Manuel Franceschini | def GetHostname(name=None, family=None): |
134 | b705c7a6 | Manuel Franceschini | """Returns a Hostname object.
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135 | a744b676 | Manuel Franceschini |
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136 | b705c7a6 | Manuel Franceschini | @type name: str
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137 | b705c7a6 | Manuel Franceschini | @param name: hostname or None
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138 | b705c7a6 | Manuel Franceschini | @type family: int
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139 | b705c7a6 | Manuel Franceschini | @param family: AF_INET | AF_INET6 | None
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140 | b705c7a6 | Manuel Franceschini | @rtype: L{Hostname}
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141 | b705c7a6 | Manuel Franceschini | @return: Hostname object
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142 | 17f7fd27 | Manuel Franceschini | @raise errors.OpPrereqError: in case of errors in resolving
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143 | b705c7a6 | Manuel Franceschini |
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144 | b705c7a6 | Manuel Franceschini | """
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145 | a744b676 | Manuel Franceschini | try:
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146 | b705c7a6 | Manuel Franceschini | return Hostname(name=name, family=family)
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147 | a744b676 | Manuel Franceschini | except errors.ResolverError, err:
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148 | a744b676 | Manuel Franceschini | raise errors.OpPrereqError("The given name (%s) does not resolve: %s" % |
149 | a744b676 | Manuel Franceschini | (err[0], err[2]), errors.ECODE_RESOLVER) |
150 | a744b676 | Manuel Franceschini | |
151 | a744b676 | Manuel Franceschini | |
152 | b705c7a6 | Manuel Franceschini | class Hostname: |
153 | b705c7a6 | Manuel Franceschini | """Class implementing resolver and hostname functionality.
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154 | a744b676 | Manuel Franceschini |
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155 | a744b676 | Manuel Franceschini | """
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156 | e7b3ad26 | Manuel Franceschini | _VALID_NAME_RE = re.compile("^[a-z0-9._-]{1,255}$")
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157 | e7b3ad26 | Manuel Franceschini | |
158 | b705c7a6 | Manuel Franceschini | def __init__(self, name=None, family=None): |
159 | a744b676 | Manuel Franceschini | """Initialize the host name object.
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160 | a744b676 | Manuel Franceschini |
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161 | b705c7a6 | Manuel Franceschini | If the name argument is None, it will use this system's name.
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162 | b705c7a6 | Manuel Franceschini |
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163 | b705c7a6 | Manuel Franceschini | @type family: int
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164 | b705c7a6 | Manuel Franceschini | @param family: AF_INET | AF_INET6 | None
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165 | b705c7a6 | Manuel Franceschini | @type name: str
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166 | b705c7a6 | Manuel Franceschini | @param name: hostname or None
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167 | a744b676 | Manuel Franceschini |
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168 | a744b676 | Manuel Franceschini | """
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169 | f3044516 | Manuel Franceschini | self.name = self.GetNormalizedName(self.GetFqdn(name)) |
170 | b705c7a6 | Manuel Franceschini | self.ip = self.GetIP(self.name, family=family) |
171 | a744b676 | Manuel Franceschini | |
172 | f3044516 | Manuel Franceschini | @classmethod
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173 | f3044516 | Manuel Franceschini | def GetSysName(cls): |
174 | f3044516 | Manuel Franceschini | """Legacy method the get the current system's name.
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175 | f3044516 | Manuel Franceschini |
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176 | f3044516 | Manuel Franceschini | """
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177 | f3044516 | Manuel Franceschini | return cls.GetFqdn()
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178 | f3044516 | Manuel Franceschini | |
179 | a744b676 | Manuel Franceschini | @staticmethod
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180 | f3044516 | Manuel Franceschini | def GetFqdn(hostname=None): |
181 | f3044516 | Manuel Franceschini | """Return fqdn.
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182 | f3044516 | Manuel Franceschini |
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183 | f3044516 | Manuel Franceschini | If hostname is None the system's fqdn is returned.
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184 | a744b676 | Manuel Franceschini |
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185 | f3044516 | Manuel Franceschini | @type hostname: str
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186 | f3044516 | Manuel Franceschini | @param hostname: name to be fqdn'ed
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187 | f3044516 | Manuel Franceschini | @rtype: str
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188 | f3044516 | Manuel Franceschini | @return: fqdn of given name, if it exists, unmodified name otherwise
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189 | a744b676 | Manuel Franceschini |
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190 | a744b676 | Manuel Franceschini | """
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191 | f3044516 | Manuel Franceschini | if hostname is None: |
192 | f3044516 | Manuel Franceschini | return socket.getfqdn()
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193 | f3044516 | Manuel Franceschini | else:
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194 | f3044516 | Manuel Franceschini | return socket.getfqdn(hostname)
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195 | a744b676 | Manuel Franceschini | |
196 | a744b676 | Manuel Franceschini | @staticmethod
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197 | b705c7a6 | Manuel Franceschini | def GetIP(hostname, family=None): |
198 | b705c7a6 | Manuel Franceschini | """Return IP address of given hostname.
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199 | b705c7a6 | Manuel Franceschini |
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200 | b705c7a6 | Manuel Franceschini | Supports both IPv4 and IPv6.
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201 | a744b676 | Manuel Franceschini |
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202 | a744b676 | Manuel Franceschini | @type hostname: str
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203 | a744b676 | Manuel Franceschini | @param hostname: hostname to look up
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204 | b705c7a6 | Manuel Franceschini | @type family: int
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205 | b705c7a6 | Manuel Franceschini | @param family: AF_INET | AF_INET6 | None
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206 | b705c7a6 | Manuel Franceschini | @rtype: str
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207 | b705c7a6 | Manuel Franceschini | @return: IP address
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208 | a744b676 | Manuel Franceschini | @raise errors.ResolverError: in case of errors in resolving
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209 | a744b676 | Manuel Franceschini |
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210 | a744b676 | Manuel Franceschini | """
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211 | a744b676 | Manuel Franceschini | try:
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212 | b705c7a6 | Manuel Franceschini | if family in (socket.AF_INET, socket.AF_INET6): |
213 | b705c7a6 | Manuel Franceschini | result = socket.getaddrinfo(hostname, None, family)
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214 | b705c7a6 | Manuel Franceschini | else:
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215 | b43dcc5a | Manuel Franceschini | result = socket.getaddrinfo(hostname, None)
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216 | a744b676 | Manuel Franceschini | except (socket.gaierror, socket.herror, socket.error), err:
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217 | a744b676 | Manuel Franceschini | # hostname not found in DNS, or other socket exception in the
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218 | a744b676 | Manuel Franceschini | # (code, description format)
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219 | a744b676 | Manuel Franceschini | raise errors.ResolverError(hostname, err.args[0], err.args[1]) |
220 | a744b676 | Manuel Franceschini | |
221 | b705c7a6 | Manuel Franceschini | # getaddrinfo() returns a list of 5-tupes (family, socktype, proto,
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222 | b705c7a6 | Manuel Franceschini | # canonname, sockaddr). We return the first tuple's first address in
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223 | b705c7a6 | Manuel Franceschini | # sockaddr
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224 | e7b3ad26 | Manuel Franceschini | try:
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225 | e7b3ad26 | Manuel Franceschini | return result[0][4][0] |
226 | e7b3ad26 | Manuel Franceschini | except IndexError, err: |
227 | e7b3ad26 | Manuel Franceschini | raise errors.ResolverError("Unknown error in getaddrinfo(): %s" % err) |
228 | a744b676 | Manuel Franceschini | |
229 | e7b3ad26 | Manuel Franceschini | @classmethod
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230 | e7b3ad26 | Manuel Franceschini | def GetNormalizedName(cls, hostname): |
231 | a744b676 | Manuel Franceschini | """Validate and normalize the given hostname.
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232 | a744b676 | Manuel Franceschini |
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233 | a744b676 | Manuel Franceschini | @attention: the validation is a bit more relaxed than the standards
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234 | a744b676 | Manuel Franceschini | require; most importantly, we allow underscores in names
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235 | a744b676 | Manuel Franceschini | @raise errors.OpPrereqError: when the name is not valid
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236 | a744b676 | Manuel Franceschini |
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237 | a744b676 | Manuel Franceschini | """
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238 | a744b676 | Manuel Franceschini | hostname = hostname.lower() |
239 | e7b3ad26 | Manuel Franceschini | if (not cls._VALID_NAME_RE.match(hostname) or |
240 | a744b676 | Manuel Franceschini | # double-dots, meaning empty label
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241 | a744b676 | Manuel Franceschini | ".." in hostname or |
242 | a744b676 | Manuel Franceschini | # empty initial label
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243 | a744b676 | Manuel Franceschini | hostname.startswith(".")):
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244 | a744b676 | Manuel Franceschini | raise errors.OpPrereqError("Invalid hostname '%s'" % hostname, |
245 | a744b676 | Manuel Franceschini | errors.ECODE_INVAL) |
246 | a744b676 | Manuel Franceschini | if hostname.endswith("."): |
247 | a744b676 | Manuel Franceschini | hostname = hostname.rstrip(".")
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248 | a744b676 | Manuel Franceschini | return hostname
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249 | a744b676 | Manuel Franceschini | |
250 | a744b676 | Manuel Franceschini | |
251 | a744b676 | Manuel Franceschini | def TcpPing(target, port, timeout=10, live_port_needed=False, source=None): |
252 | a744b676 | Manuel Franceschini | """Simple ping implementation using TCP connect(2).
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253 | a744b676 | Manuel Franceschini |
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254 | a744b676 | Manuel Franceschini | Check if the given IP is reachable by doing attempting a TCP connect
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255 | a744b676 | Manuel Franceschini | to it.
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256 | a744b676 | Manuel Franceschini |
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257 | a744b676 | Manuel Franceschini | @type target: str
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258 | 77b02a99 | Renรฉ Nussbaumer | @param target: the IP to ping
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259 | a744b676 | Manuel Franceschini | @type port: int
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260 | a744b676 | Manuel Franceschini | @param port: the port to connect to
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261 | a744b676 | Manuel Franceschini | @type timeout: int
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262 | a744b676 | Manuel Franceschini | @param timeout: the timeout on the connection attempt
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263 | a744b676 | Manuel Franceschini | @type live_port_needed: boolean
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264 | a744b676 | Manuel Franceschini | @param live_port_needed: whether a closed port will cause the
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265 | a744b676 | Manuel Franceschini | function to return failure, as if there was a timeout
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266 | a744b676 | Manuel Franceschini | @type source: str or None
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267 | a744b676 | Manuel Franceschini | @param source: if specified, will cause the connect to be made
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268 | a744b676 | Manuel Franceschini | from this specific source address; failures to bind other
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269 | a744b676 | Manuel Franceschini | than C{EADDRNOTAVAIL} will be ignored
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270 | a744b676 | Manuel Franceschini |
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271 | a744b676 | Manuel Franceschini | """
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272 | a744b676 | Manuel Franceschini | try:
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273 | 8b312c1d | Manuel Franceschini | family = IPAddress.GetAddressFamily(target) |
274 | a744b676 | Manuel Franceschini | except errors.GenericError:
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275 | a744b676 | Manuel Franceschini | return False |
276 | a744b676 | Manuel Franceschini | |
277 | a744b676 | Manuel Franceschini | sock = socket.socket(family, socket.SOCK_STREAM) |
278 | a744b676 | Manuel Franceschini | success = False
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279 | a744b676 | Manuel Franceschini | |
280 | a744b676 | Manuel Franceschini | if source is not None: |
281 | a744b676 | Manuel Franceschini | try:
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282 | a744b676 | Manuel Franceschini | sock.bind((source, 0))
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283 | a744b676 | Manuel Franceschini | except socket.error, (errcode, _):
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284 | a744b676 | Manuel Franceschini | if errcode == errno.EADDRNOTAVAIL:
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285 | a744b676 | Manuel Franceschini | success = False
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286 | a744b676 | Manuel Franceschini | |
287 | a744b676 | Manuel Franceschini | sock.settimeout(timeout) |
288 | a744b676 | Manuel Franceschini | |
289 | a744b676 | Manuel Franceschini | try:
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290 | a744b676 | Manuel Franceschini | sock.connect((target, port)) |
291 | a744b676 | Manuel Franceschini | sock.close() |
292 | a744b676 | Manuel Franceschini | success = True
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293 | a744b676 | Manuel Franceschini | except socket.timeout:
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294 | a744b676 | Manuel Franceschini | success = False
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295 | a744b676 | Manuel Franceschini | except socket.error, (errcode, _):
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296 | a744b676 | Manuel Franceschini | success = (not live_port_needed) and (errcode == errno.ECONNREFUSED) |
297 | a744b676 | Manuel Franceschini | |
298 | a744b676 | Manuel Franceschini | return success
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299 | a744b676 | Manuel Franceschini | |
300 | a744b676 | Manuel Franceschini | |
301 | a744b676 | Manuel Franceschini | def GetDaemonPort(daemon_name): |
302 | a744b676 | Manuel Franceschini | """Get the daemon port for this cluster.
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303 | a744b676 | Manuel Franceschini |
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304 | a744b676 | Manuel Franceschini | Note that this routine does not read a ganeti-specific file, but
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305 | a744b676 | Manuel Franceschini | instead uses C{socket.getservbyname} to allow pre-customization of
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306 | a744b676 | Manuel Franceschini | this parameter outside of Ganeti.
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307 | a744b676 | Manuel Franceschini |
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308 | a744b676 | Manuel Franceschini | @type daemon_name: string
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309 | a744b676 | Manuel Franceschini | @param daemon_name: daemon name (in constants.DAEMONS_PORTS)
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310 | a744b676 | Manuel Franceschini | @rtype: int
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311 | a744b676 | Manuel Franceschini |
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312 | a744b676 | Manuel Franceschini | """
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313 | a744b676 | Manuel Franceschini | if daemon_name not in constants.DAEMONS_PORTS: |
314 | a744b676 | Manuel Franceschini | raise errors.ProgrammerError("Unknown daemon: %s" % daemon_name) |
315 | a744b676 | Manuel Franceschini | |
316 | a744b676 | Manuel Franceschini | (proto, default_port) = constants.DAEMONS_PORTS[daemon_name] |
317 | a744b676 | Manuel Franceschini | try:
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318 | a744b676 | Manuel Franceschini | port = socket.getservbyname(daemon_name, proto) |
319 | a744b676 | Manuel Franceschini | except socket.error:
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320 | a744b676 | Manuel Franceschini | port = default_port |
321 | a744b676 | Manuel Franceschini | |
322 | a744b676 | Manuel Franceschini | return port
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323 | 8b312c1d | Manuel Franceschini | |
324 | 8b312c1d | Manuel Franceschini | |
325 | 8b312c1d | Manuel Franceschini | class IPAddress(object): |
326 | 8b312c1d | Manuel Franceschini | """Class that represents an IP address.
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327 | 8b312c1d | Manuel Franceschini |
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328 | 8b312c1d | Manuel Franceschini | """
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329 | 8b312c1d | Manuel Franceschini | iplen = 0
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330 | 8b312c1d | Manuel Franceschini | family = None
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331 | 8b312c1d | Manuel Franceschini | loopback_cidr = None
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332 | 8b312c1d | Manuel Franceschini | |
333 | 8b312c1d | Manuel Franceschini | @staticmethod
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334 | 8b312c1d | Manuel Franceschini | def _GetIPIntFromString(address): |
335 | 8b312c1d | Manuel Franceschini | """Abstract method to please pylint.
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336 | 8b312c1d | Manuel Franceschini |
|
337 | 8b312c1d | Manuel Franceschini | """
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338 | 8b312c1d | Manuel Franceschini | raise NotImplementedError |
339 | 8b312c1d | Manuel Franceschini | |
340 | 8b312c1d | Manuel Franceschini | @classmethod
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341 | 8b312c1d | Manuel Franceschini | def IsValid(cls, address): |
342 | 8b312c1d | Manuel Franceschini | """Validate a IP address.
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343 | 8b312c1d | Manuel Franceschini |
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344 | 8b312c1d | Manuel Franceschini | @type address: str
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345 | 8b312c1d | Manuel Franceschini | @param address: IP address to be checked
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346 | 8b312c1d | Manuel Franceschini | @rtype: bool
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347 | 8b312c1d | Manuel Franceschini | @return: True if valid, False otherwise
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348 | 8b312c1d | Manuel Franceschini |
|
349 | 8b312c1d | Manuel Franceschini | """
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350 | 8b312c1d | Manuel Franceschini | if cls.family is None: |
351 | 8b312c1d | Manuel Franceschini | try:
|
352 | 8b312c1d | Manuel Franceschini | family = cls.GetAddressFamily(address) |
353 | 8b312c1d | Manuel Franceschini | except errors.IPAddressError:
|
354 | 8b312c1d | Manuel Franceschini | return False |
355 | 8b312c1d | Manuel Franceschini | else:
|
356 | 8b312c1d | Manuel Franceschini | family = cls.family |
357 | 8b312c1d | Manuel Franceschini | |
358 | 8b312c1d | Manuel Franceschini | try:
|
359 | 8b312c1d | Manuel Franceschini | socket.inet_pton(family, address) |
360 | 8b312c1d | Manuel Franceschini | return True |
361 | 8b312c1d | Manuel Franceschini | except socket.error:
|
362 | 8b312c1d | Manuel Franceschini | return False |
363 | 8b312c1d | Manuel Franceschini | |
364 | 8b312c1d | Manuel Franceschini | @classmethod
|
365 | 7df2c4f0 | Andrea Spadaccini | def ValidateNetmask(cls, netmask): |
366 | 7df2c4f0 | Andrea Spadaccini | """Validate a netmask suffix in CIDR notation.
|
367 | 7df2c4f0 | Andrea Spadaccini |
|
368 | 7df2c4f0 | Andrea Spadaccini | @type netmask: int
|
369 | 7df2c4f0 | Andrea Spadaccini | @param netmask: netmask suffix to validate
|
370 | 7df2c4f0 | Andrea Spadaccini | @rtype: bool
|
371 | 7df2c4f0 | Andrea Spadaccini | @return: True if valid, False otherwise
|
372 | 7df2c4f0 | Andrea Spadaccini |
|
373 | 7df2c4f0 | Andrea Spadaccini | """
|
374 | 7df2c4f0 | Andrea Spadaccini | assert (isinstance(netmask, (int, long))) |
375 | 7df2c4f0 | Andrea Spadaccini | |
376 | 7df2c4f0 | Andrea Spadaccini | return 0 < netmask <= cls.iplen |
377 | 7df2c4f0 | Andrea Spadaccini | |
378 | 7df2c4f0 | Andrea Spadaccini | @classmethod
|
379 | 8b312c1d | Manuel Franceschini | def Own(cls, address): |
380 | 8b312c1d | Manuel Franceschini | """Check if the current host has the the given IP address.
|
381 | 8b312c1d | Manuel Franceschini |
|
382 | 8b312c1d | Manuel Franceschini | This is done by trying to bind the given address. We return True if we
|
383 | 8b312c1d | Manuel Franceschini | succeed or false if a socket.error is raised.
|
384 | 8b312c1d | Manuel Franceschini |
|
385 | 8b312c1d | Manuel Franceschini | @type address: str
|
386 | 8b312c1d | Manuel Franceschini | @param address: IP address to be checked
|
387 | 8b312c1d | Manuel Franceschini | @rtype: bool
|
388 | 8b312c1d | Manuel Franceschini | @return: True if we own the address, False otherwise
|
389 | 8b312c1d | Manuel Franceschini |
|
390 | 8b312c1d | Manuel Franceschini | """
|
391 | 8b312c1d | Manuel Franceschini | if cls.family is None: |
392 | 8b312c1d | Manuel Franceschini | try:
|
393 | 8b312c1d | Manuel Franceschini | family = cls.GetAddressFamily(address) |
394 | 8b312c1d | Manuel Franceschini | except errors.IPAddressError:
|
395 | 8b312c1d | Manuel Franceschini | return False |
396 | 8b312c1d | Manuel Franceschini | else:
|
397 | 8b312c1d | Manuel Franceschini | family = cls.family |
398 | 8b312c1d | Manuel Franceschini | |
399 | 8b312c1d | Manuel Franceschini | s = socket.socket(family, socket.SOCK_DGRAM) |
400 | 8b312c1d | Manuel Franceschini | success = False
|
401 | 8b312c1d | Manuel Franceschini | try:
|
402 | 8b312c1d | Manuel Franceschini | try:
|
403 | 8b312c1d | Manuel Franceschini | s.bind((address, 0))
|
404 | 8b312c1d | Manuel Franceschini | success = True
|
405 | 8b312c1d | Manuel Franceschini | except socket.error:
|
406 | 8b312c1d | Manuel Franceschini | success = False
|
407 | 8b312c1d | Manuel Franceschini | finally:
|
408 | 8b312c1d | Manuel Franceschini | s.close() |
409 | 8b312c1d | Manuel Franceschini | return success
|
410 | 8b312c1d | Manuel Franceschini | |
411 | 8b312c1d | Manuel Franceschini | @classmethod
|
412 | 8b312c1d | Manuel Franceschini | def InNetwork(cls, cidr, address): |
413 | 8b312c1d | Manuel Franceschini | """Determine whether an address is within a network.
|
414 | 8b312c1d | Manuel Franceschini |
|
415 | 8b312c1d | Manuel Franceschini | @type cidr: string
|
416 | 8b312c1d | Manuel Franceschini | @param cidr: Network in CIDR notation, e.g. '192.0.2.0/24', '2001:db8::/64'
|
417 | 8b312c1d | Manuel Franceschini | @type address: str
|
418 | 8b312c1d | Manuel Franceschini | @param address: IP address
|
419 | 8b312c1d | Manuel Franceschini | @rtype: bool
|
420 | 8b312c1d | Manuel Franceschini | @return: True if address is in cidr, False otherwise
|
421 | 8b312c1d | Manuel Franceschini |
|
422 | 8b312c1d | Manuel Franceschini | """
|
423 | 8b312c1d | Manuel Franceschini | address_int = cls._GetIPIntFromString(address) |
424 | 8b312c1d | Manuel Franceschini | subnet = cidr.split("/")
|
425 | 8b312c1d | Manuel Franceschini | assert len(subnet) == 2 |
426 | 8b312c1d | Manuel Franceschini | try:
|
427 | 8b312c1d | Manuel Franceschini | prefix = int(subnet[1]) |
428 | 8b312c1d | Manuel Franceschini | except ValueError: |
429 | 8b312c1d | Manuel Franceschini | return False |
430 | 8b312c1d | Manuel Franceschini | |
431 | 8b312c1d | Manuel Franceschini | assert 0 <= prefix <= cls.iplen |
432 | 8b312c1d | Manuel Franceschini | target_int = cls._GetIPIntFromString(subnet[0])
|
433 | 8b312c1d | Manuel Franceschini | # Convert prefix netmask to integer value of netmask
|
434 | e687ec01 | Michael Hanselmann | netmask_int = (2 ** cls.iplen) - 1 ^ ((2 ** cls.iplen) - 1 >> prefix) |
435 | 8b312c1d | Manuel Franceschini | # Calculate hostmask
|
436 | e687ec01 | Michael Hanselmann | hostmask_int = netmask_int ^ (2 ** cls.iplen) - 1 |
437 | 8b312c1d | Manuel Franceschini | # Calculate network address by and'ing netmask
|
438 | 8b312c1d | Manuel Franceschini | network_int = target_int & netmask_int |
439 | 8b312c1d | Manuel Franceschini | # Calculate broadcast address by or'ing hostmask
|
440 | 8b312c1d | Manuel Franceschini | broadcast_int = target_int | hostmask_int |
441 | 8b312c1d | Manuel Franceschini | |
442 | 8b312c1d | Manuel Franceschini | return network_int <= address_int <= broadcast_int
|
443 | 8b312c1d | Manuel Franceschini | |
444 | 8b312c1d | Manuel Franceschini | @staticmethod
|
445 | 8b312c1d | Manuel Franceschini | def GetAddressFamily(address): |
446 | 8b312c1d | Manuel Franceschini | """Get the address family of the given address.
|
447 | 8b312c1d | Manuel Franceschini |
|
448 | 8b312c1d | Manuel Franceschini | @type address: str
|
449 | 8b312c1d | Manuel Franceschini | @param address: ip address whose family will be returned
|
450 | 8b312c1d | Manuel Franceschini | @rtype: int
|
451 | 37531236 | Andrea Spadaccini | @return: C{socket.AF_INET} or C{socket.AF_INET6}
|
452 | 8b312c1d | Manuel Franceschini | @raise errors.GenericError: for invalid addresses
|
453 | 8b312c1d | Manuel Franceschini |
|
454 | 8b312c1d | Manuel Franceschini | """
|
455 | 8b312c1d | Manuel Franceschini | try:
|
456 | 8b312c1d | Manuel Franceschini | return IP4Address(address).family
|
457 | 8b312c1d | Manuel Franceschini | except errors.IPAddressError:
|
458 | 8b312c1d | Manuel Franceschini | pass
|
459 | 8b312c1d | Manuel Franceschini | |
460 | 8b312c1d | Manuel Franceschini | try:
|
461 | 8b312c1d | Manuel Franceschini | return IP6Address(address).family
|
462 | 8b312c1d | Manuel Franceschini | except errors.IPAddressError:
|
463 | 8b312c1d | Manuel Franceschini | pass
|
464 | 8b312c1d | Manuel Franceschini | |
465 | 8b312c1d | Manuel Franceschini | raise errors.IPAddressError("Invalid address '%s'" % address) |
466 | 8b312c1d | Manuel Franceschini | |
467 | 37531236 | Andrea Spadaccini | @staticmethod
|
468 | 37531236 | Andrea Spadaccini | def GetVersionFromAddressFamily(family): |
469 | 37531236 | Andrea Spadaccini | """Convert an IP address family to the corresponding IP version.
|
470 | 37531236 | Andrea Spadaccini |
|
471 | 37531236 | Andrea Spadaccini | @type family: int
|
472 | 37531236 | Andrea Spadaccini | @param family: IP address family, one of socket.AF_INET or socket.AF_INET6
|
473 | 37531236 | Andrea Spadaccini | @return: an int containing the IP version, one of L{constants.IP4_VERSION}
|
474 | 37531236 | Andrea Spadaccini | or L{constants.IP6_VERSION}
|
475 | 37531236 | Andrea Spadaccini | @raise errors.ProgrammerError: for unknown families
|
476 | 37531236 | Andrea Spadaccini |
|
477 | 37531236 | Andrea Spadaccini | """
|
478 | 37531236 | Andrea Spadaccini | if family == socket.AF_INET:
|
479 | 37531236 | Andrea Spadaccini | return constants.IP4_VERSION
|
480 | 37531236 | Andrea Spadaccini | elif family == socket.AF_INET6:
|
481 | 37531236 | Andrea Spadaccini | return constants.IP6_VERSION
|
482 | 37531236 | Andrea Spadaccini | |
483 | 37531236 | Andrea Spadaccini | raise errors.ProgrammerError("%s is not a valid IP address family" % family) |
484 | 37531236 | Andrea Spadaccini | |
485 | 37531236 | Andrea Spadaccini | @staticmethod
|
486 | 37531236 | Andrea Spadaccini | def GetAddressFamilyFromVersion(version): |
487 | 37531236 | Andrea Spadaccini | """Convert an IP version to the corresponding IP address family.
|
488 | 37531236 | Andrea Spadaccini |
|
489 | 37531236 | Andrea Spadaccini | @type version: int
|
490 | 37531236 | Andrea Spadaccini | @param version: IP version, one of L{constants.IP4_VERSION} or
|
491 | 37531236 | Andrea Spadaccini | L{constants.IP6_VERSION}
|
492 | 37531236 | Andrea Spadaccini | @return: an int containing the IP address family, one of C{socket.AF_INET}
|
493 | 37531236 | Andrea Spadaccini | or C{socket.AF_INET6}
|
494 | 37531236 | Andrea Spadaccini | @raise errors.ProgrammerError: for unknown IP versions
|
495 | 37531236 | Andrea Spadaccini |
|
496 | 37531236 | Andrea Spadaccini | """
|
497 | 37531236 | Andrea Spadaccini | if version == constants.IP4_VERSION:
|
498 | 37531236 | Andrea Spadaccini | return socket.AF_INET
|
499 | 37531236 | Andrea Spadaccini | elif version == constants.IP6_VERSION:
|
500 | 37531236 | Andrea Spadaccini | return socket.AF_INET6
|
501 | 37531236 | Andrea Spadaccini | |
502 | 37531236 | Andrea Spadaccini | raise errors.ProgrammerError("%s is not a valid IP version" % version) |
503 | 37531236 | Andrea Spadaccini | |
504 | 7df2c4f0 | Andrea Spadaccini | @staticmethod
|
505 | 7df2c4f0 | Andrea Spadaccini | def GetClassFromIpVersion(version): |
506 | 7df2c4f0 | Andrea Spadaccini | """Return the IPAddress subclass for the given IP version.
|
507 | 7df2c4f0 | Andrea Spadaccini |
|
508 | 7df2c4f0 | Andrea Spadaccini | @type version: int
|
509 | 7df2c4f0 | Andrea Spadaccini | @param version: IP version, one of L{constants.IP4_VERSION} or
|
510 | 7df2c4f0 | Andrea Spadaccini | L{constants.IP6_VERSION}
|
511 | 7df2c4f0 | Andrea Spadaccini | @return: a subclass of L{netutils.IPAddress}
|
512 | 7df2c4f0 | Andrea Spadaccini | @raise errors.ProgrammerError: for unknowo IP versions
|
513 | 7df2c4f0 | Andrea Spadaccini |
|
514 | 7df2c4f0 | Andrea Spadaccini | """
|
515 | 7df2c4f0 | Andrea Spadaccini | if version == constants.IP4_VERSION:
|
516 | 7df2c4f0 | Andrea Spadaccini | return IP4Address
|
517 | 7df2c4f0 | Andrea Spadaccini | elif version == constants.IP6_VERSION:
|
518 | 7df2c4f0 | Andrea Spadaccini | return IP6Address
|
519 | 7df2c4f0 | Andrea Spadaccini | |
520 | 7df2c4f0 | Andrea Spadaccini | raise errors.ProgrammerError("%s is not a valid IP version" % version) |
521 | 7df2c4f0 | Andrea Spadaccini | |
522 | 7df2c4f0 | Andrea Spadaccini | @staticmethod
|
523 | 7df2c4f0 | Andrea Spadaccini | def GetClassFromIpFamily(family): |
524 | 7df2c4f0 | Andrea Spadaccini | """Return the IPAddress subclass for the given IP family.
|
525 | 7df2c4f0 | Andrea Spadaccini |
|
526 | 7df2c4f0 | Andrea Spadaccini | @param family: IP family (one of C{socket.AF_INET} or C{socket.AF_INET6}
|
527 | 7df2c4f0 | Andrea Spadaccini | @return: a subclass of L{netutils.IPAddress}
|
528 | 7df2c4f0 | Andrea Spadaccini | @raise errors.ProgrammerError: for unknowo IP versions
|
529 | 7df2c4f0 | Andrea Spadaccini |
|
530 | 7df2c4f0 | Andrea Spadaccini | """
|
531 | 7df2c4f0 | Andrea Spadaccini | return IPAddress.GetClassFromIpVersion(
|
532 | 7df2c4f0 | Andrea Spadaccini | IPAddress.GetVersionFromAddressFamily(family)) |
533 | 7df2c4f0 | Andrea Spadaccini | |
534 | 8b312c1d | Manuel Franceschini | @classmethod
|
535 | 8b312c1d | Manuel Franceschini | def IsLoopback(cls, address): |
536 | 8b312c1d | Manuel Franceschini | """Determine whether it is a loopback address.
|
537 | 8b312c1d | Manuel Franceschini |
|
538 | 8b312c1d | Manuel Franceschini | @type address: str
|
539 | 8b312c1d | Manuel Franceschini | @param address: IP address to be checked
|
540 | 8b312c1d | Manuel Franceschini | @rtype: bool
|
541 | 8b312c1d | Manuel Franceschini | @return: True if loopback, False otherwise
|
542 | 8b312c1d | Manuel Franceschini |
|
543 | 8b312c1d | Manuel Franceschini | """
|
544 | 8b312c1d | Manuel Franceschini | try:
|
545 | 8b312c1d | Manuel Franceschini | return cls.InNetwork(cls.loopback_cidr, address)
|
546 | 8b312c1d | Manuel Franceschini | except errors.IPAddressError:
|
547 | 8b312c1d | Manuel Franceschini | return False |
548 | 8b312c1d | Manuel Franceschini | |
549 | 8b312c1d | Manuel Franceschini | |
550 | 8b312c1d | Manuel Franceschini | class IP4Address(IPAddress): |
551 | 8b312c1d | Manuel Franceschini | """IPv4 address class.
|
552 | 8b312c1d | Manuel Franceschini |
|
553 | 8b312c1d | Manuel Franceschini | """
|
554 | 8b312c1d | Manuel Franceschini | iplen = 32
|
555 | 8b312c1d | Manuel Franceschini | family = socket.AF_INET |
556 | 8b312c1d | Manuel Franceschini | loopback_cidr = "127.0.0.0/8"
|
557 | 8b312c1d | Manuel Franceschini | |
558 | 8b312c1d | Manuel Franceschini | def __init__(self, address): |
559 | 8b312c1d | Manuel Franceschini | """Constructor for IPv4 address.
|
560 | 8b312c1d | Manuel Franceschini |
|
561 | 8b312c1d | Manuel Franceschini | @type address: str
|
562 | 8b312c1d | Manuel Franceschini | @param address: IP address
|
563 | 8b312c1d | Manuel Franceschini | @raises errors.IPAddressError: if address invalid
|
564 | 8b312c1d | Manuel Franceschini |
|
565 | 8b312c1d | Manuel Franceschini | """
|
566 | 8b312c1d | Manuel Franceschini | IPAddress.__init__(self)
|
567 | 8b312c1d | Manuel Franceschini | if not self.IsValid(address): |
568 | 8b312c1d | Manuel Franceschini | raise errors.IPAddressError("IPv4 Address %s invalid" % address) |
569 | 8b312c1d | Manuel Franceschini | |
570 | 8b312c1d | Manuel Franceschini | self.address = address
|
571 | 8b312c1d | Manuel Franceschini | |
572 | 8b312c1d | Manuel Franceschini | @staticmethod
|
573 | 8b312c1d | Manuel Franceschini | def _GetIPIntFromString(address): |
574 | 8b312c1d | Manuel Franceschini | """Get integer value of IPv4 address.
|
575 | 8b312c1d | Manuel Franceschini |
|
576 | 8b312c1d | Manuel Franceschini | @type address: str
|
577 | 17f7fd27 | Manuel Franceschini | @param address: IPv6 address
|
578 | 8b312c1d | Manuel Franceschini | @rtype: int
|
579 | 8b312c1d | Manuel Franceschini | @return: integer value of given IP address
|
580 | 8b312c1d | Manuel Franceschini |
|
581 | 8b312c1d | Manuel Franceschini | """
|
582 | 8b312c1d | Manuel Franceschini | address_int = 0
|
583 | 8b312c1d | Manuel Franceschini | parts = address.split(".")
|
584 | 8b312c1d | Manuel Franceschini | assert len(parts) == 4 |
585 | 8b312c1d | Manuel Franceschini | for part in parts: |
586 | 8b312c1d | Manuel Franceschini | address_int = (address_int << 8) | int(part) |
587 | 8b312c1d | Manuel Franceschini | |
588 | 8b312c1d | Manuel Franceschini | return address_int
|
589 | 8b312c1d | Manuel Franceschini | |
590 | 8b312c1d | Manuel Franceschini | |
591 | 8b312c1d | Manuel Franceschini | class IP6Address(IPAddress): |
592 | 8b312c1d | Manuel Franceschini | """IPv6 address class.
|
593 | 8b312c1d | Manuel Franceschini |
|
594 | 8b312c1d | Manuel Franceschini | """
|
595 | 8b312c1d | Manuel Franceschini | iplen = 128
|
596 | 8b312c1d | Manuel Franceschini | family = socket.AF_INET6 |
597 | 8b312c1d | Manuel Franceschini | loopback_cidr = "::1/128"
|
598 | 8b312c1d | Manuel Franceschini | |
599 | 8b312c1d | Manuel Franceschini | def __init__(self, address): |
600 | 8b312c1d | Manuel Franceschini | """Constructor for IPv6 address.
|
601 | 8b312c1d | Manuel Franceschini |
|
602 | 8b312c1d | Manuel Franceschini | @type address: str
|
603 | 8b312c1d | Manuel Franceschini | @param address: IP address
|
604 | 8b312c1d | Manuel Franceschini | @raises errors.IPAddressError: if address invalid
|
605 | 8b312c1d | Manuel Franceschini |
|
606 | 8b312c1d | Manuel Franceschini | """
|
607 | 8b312c1d | Manuel Franceschini | IPAddress.__init__(self)
|
608 | 8b312c1d | Manuel Franceschini | if not self.IsValid(address): |
609 | 8b312c1d | Manuel Franceschini | raise errors.IPAddressError("IPv6 Address [%s] invalid" % address) |
610 | 8b312c1d | Manuel Franceschini | self.address = address
|
611 | 8b312c1d | Manuel Franceschini | |
612 | 8b312c1d | Manuel Franceschini | @staticmethod
|
613 | 8b312c1d | Manuel Franceschini | def _GetIPIntFromString(address): |
614 | 8b312c1d | Manuel Franceschini | """Get integer value of IPv6 address.
|
615 | 8b312c1d | Manuel Franceschini |
|
616 | 8b312c1d | Manuel Franceschini | @type address: str
|
617 | 17f7fd27 | Manuel Franceschini | @param address: IPv6 address
|
618 | 8b312c1d | Manuel Franceschini | @rtype: int
|
619 | 8b312c1d | Manuel Franceschini | @return: integer value of given IP address
|
620 | 8b312c1d | Manuel Franceschini |
|
621 | 8b312c1d | Manuel Franceschini | """
|
622 | 8b312c1d | Manuel Franceschini | doublecolons = address.count("::")
|
623 | 8b312c1d | Manuel Franceschini | assert not doublecolons > 1 |
624 | 8b312c1d | Manuel Franceschini | if doublecolons == 1: |
625 | 8b312c1d | Manuel Franceschini | # We have a shorthand address, expand it
|
626 | 8b312c1d | Manuel Franceschini | parts = [] |
627 | 8b312c1d | Manuel Franceschini | twoparts = address.split("::")
|
628 | d0c8c01d | Iustin Pop | sep = len(twoparts[0].split(":")) + len(twoparts[1].split(":")) |
629 | d0c8c01d | Iustin Pop | parts = twoparts[0].split(":") |
630 | 17385bd2 | Andrea Spadaccini | parts.extend(["0"] * (8 - sep)) |
631 | d0c8c01d | Iustin Pop | parts += twoparts[1].split(":") |
632 | 8b312c1d | Manuel Franceschini | else:
|
633 | 8b312c1d | Manuel Franceschini | parts = address.split(":")
|
634 | 8b312c1d | Manuel Franceschini | |
635 | 8b312c1d | Manuel Franceschini | address_int = 0
|
636 | 8b312c1d | Manuel Franceschini | for part in parts: |
637 | d0c8c01d | Iustin Pop | address_int = (address_int << 16) + int(part or "0", 16) |
638 | 8b312c1d | Manuel Franceschini | |
639 | 8b312c1d | Manuel Franceschini | return address_int
|
640 | 1a8337f2 | Manuel Franceschini | |
641 | 7845b8c8 | Manuel Franceschini | |
642 | 981732fb | Manuel Franceschini | def FormatAddress(address, family=None): |
643 | 1a8337f2 | Manuel Franceschini | """Format a socket address
|
644 | 1a8337f2 | Manuel Franceschini |
|
645 | 1a8337f2 | Manuel Franceschini | @type address: family specific (usually tuple)
|
646 | 1a8337f2 | Manuel Franceschini | @param address: address, as reported by this class
|
647 | 981732fb | Manuel Franceschini | @type family: integer
|
648 | 981732fb | Manuel Franceschini | @param family: socket family (one of socket.AF_*) or None
|
649 | 1a8337f2 | Manuel Franceschini |
|
650 | 1a8337f2 | Manuel Franceschini | """
|
651 | 981732fb | Manuel Franceschini | if family is None: |
652 | 981732fb | Manuel Franceschini | try:
|
653 | 981732fb | Manuel Franceschini | family = IPAddress.GetAddressFamily(address[0])
|
654 | 981732fb | Manuel Franceschini | except errors.IPAddressError:
|
655 | 981732fb | Manuel Franceschini | raise errors.ParameterError(address)
|
656 | 981732fb | Manuel Franceschini | |
657 | 1a8337f2 | Manuel Franceschini | if family == socket.AF_UNIX and len(address) == 3: |
658 | 1a8337f2 | Manuel Franceschini | return "pid=%s, uid=%s, gid=%s" % address |
659 | 1a8337f2 | Manuel Franceschini | |
660 | 1a8337f2 | Manuel Franceschini | if family in (socket.AF_INET, socket.AF_INET6) and len(address) == 2: |
661 | 1a8337f2 | Manuel Franceschini | host, port = address |
662 | 1a8337f2 | Manuel Franceschini | if family == socket.AF_INET6:
|
663 | 1a8337f2 | Manuel Franceschini | res = "[%s]" % host
|
664 | 1a8337f2 | Manuel Franceschini | else:
|
665 | 1a8337f2 | Manuel Franceschini | res = host |
666 | 1a8337f2 | Manuel Franceschini | |
667 | 1a8337f2 | Manuel Franceschini | if port is not None: |
668 | 1a8337f2 | Manuel Franceschini | res += ":%s" % port
|
669 | 1a8337f2 | Manuel Franceschini | |
670 | 1a8337f2 | Manuel Franceschini | return res
|
671 | 1a8337f2 | Manuel Franceschini | |
672 | 1a8337f2 | Manuel Franceschini | raise errors.ParameterError(family, address) |