1 | #!/usr/local/bin/python |
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2 | |
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3 | import os,sys |
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4 | import stat # for chmod constants |
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5 | import re |
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6 | import random |
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7 | import string |
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8 | import copy |
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9 | import pickle |
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10 | import logging |
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11 | import subprocess |
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12 | |
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13 | from threading import * |
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14 | from M2Crypto.SSL import SSLError |
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15 | |
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16 | from access import access_base |
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17 | |
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18 | from util import * |
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19 | from allocate_project import allocate_project_local, allocate_project_remote |
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20 | from access_project import access_project |
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21 | from fedid import fedid, generate_fedid |
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22 | from authorizer import authorizer |
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23 | from service_error import service_error |
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24 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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25 | |
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26 | import httplib |
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27 | import tempfile |
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28 | from urlparse import urlparse |
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29 | |
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30 | import topdl |
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31 | import list_log |
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32 | import proxy_emulab_segment |
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33 | import local_emulab_segment |
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34 | |
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35 | |
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36 | # Make log messages disappear if noone configures a fedd logger |
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37 | class nullHandler(logging.Handler): |
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38 | def emit(self, record): pass |
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39 | |
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40 | fl = logging.getLogger("fedd.access") |
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41 | fl.addHandler(nullHandler()) |
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42 | |
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43 | class access(access_base): |
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44 | """ |
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45 | The implementation of access control based on mapping users to projects. |
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46 | |
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47 | Users can be mapped to existing projects or have projects created |
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48 | dynamically. This implements both direct requests and proxies. |
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49 | """ |
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50 | |
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51 | proxy_RequestAccess= service_caller('RequestAccess') |
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52 | proxy_ReleaseAccess= service_caller('ReleaseAccess') |
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53 | |
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54 | def __init__(self, config=None, auth=None): |
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55 | """ |
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56 | Initializer. Pulls parameters out of the ConfigParser's access section. |
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57 | """ |
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58 | |
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59 | access_base.__init__(self, config, auth) |
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60 | |
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61 | self.allow_proxy = config.getboolean("access", "allow_proxy") |
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62 | |
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63 | self.boss = config.get("access", "boss") |
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64 | self.ops = config.get("access", "ops") |
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65 | self.domain = config.get("access", "domain") |
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66 | self.fileserver = config.get("access", "fileserver") |
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67 | self.eventserver = config.get("access", "eventserver") |
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68 | self.userconfdir = config.get("access","userconfdir") |
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69 | self.userconfcmd = config.get("access","userconfcmd") |
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70 | self.userconfurl = config.get("access","userconfurl") |
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71 | self.federation_software = config.get("access", "federation_software") |
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72 | self.portal_software = config.get("access", "portal_software") |
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73 | self.local_seer_software = config.get("access", "local_seer_software") |
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74 | self.local_seer_image = config.get("access", "local_seer_image") |
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75 | self.local_seer_start = config.get("access", "local_seer_start") |
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76 | self.seer_master_start = config.get("access", "seer_master_start") |
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77 | self.ssh_privkey_file = config.get("access","ssh_privkey_file") |
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78 | self.ssh_pubkey_file = config.get("access","ssh_pubkey_file") |
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79 | self.ssh_port = config.get("access","ssh_port") or "22" |
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80 | |
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81 | self.dragon_endpoint = config.get("access", "dragon") |
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82 | self.dragon_vlans = config.get("access", "dragon_vlans") |
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83 | self.deter_internal = config.get("access", "deter_internal") |
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84 | |
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85 | self.tunnel_config = config.getboolean("access", "tunnel_config") |
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86 | self.portal_command = config.get("access", "portal_command") |
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87 | self.portal_image = config.get("access", "portal_image") |
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88 | self.portal_type = config.get("access", "portal_type") or "pc" |
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89 | self.portal_startcommand = config.get("access", "portal_startcommand") |
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90 | self.node_startcommand = config.get("access", "node_startcommand") |
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91 | |
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92 | self.federation_software = self.software_list(self.federation_software) |
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93 | self.portal_software = self.software_list(self.portal_software) |
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94 | self.local_seer_software = self.software_list(self.local_seer_software) |
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95 | |
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96 | self.access_type = self.access_type.lower() |
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97 | if self.access_type == 'remote_emulab': |
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98 | self.start_segment = proxy_emulab_segment.start_segment |
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99 | self.stop_segment = proxy_emulab_segment.stop_segment |
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100 | elif self.access_type == 'local_emulab': |
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101 | self.start_segment = local_emulab_segment.start_segment |
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102 | self.stop_segment = local_emulab_segment.stop_segment |
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103 | else: |
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104 | self.start_segment = None |
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105 | self.stop_segment = None |
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106 | |
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107 | self.restricted = [ ] |
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108 | self.projects = { } |
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109 | self.keys = { } |
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110 | self.types = { } |
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111 | self.allocation = { } |
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112 | self.state = { |
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113 | 'projects': self.projects, |
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114 | 'allocation' : self.allocation, |
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115 | 'keys' : self.keys, |
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116 | 'types': self.types |
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117 | } |
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118 | self.access = { } |
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119 | if config.has_option("access", "accessdb"): |
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120 | self.read_access(config.get("access", "accessdb")) |
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121 | |
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122 | if not self.local_seer_image or not self.local_seer_software: |
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123 | self.exports.discard('local_seer_control') |
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124 | self.exports.discard('seer_master') |
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125 | |
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126 | if not self.local_seer_start: |
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127 | self.exports.discard('local_seer_control') |
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128 | |
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129 | if not self.seer_master_start: |
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130 | self.exports.discard('seer_master') |
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131 | |
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132 | tb = config.get('access', 'testbed') |
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133 | if tb: self.testbed = [ t.strip() for t in tb.split(',') ] |
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134 | else: self.testbed = [ ] |
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135 | |
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136 | if config.has_option("access", "accessdb"): |
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137 | self.read_access(config.get("access", "accessdb"), |
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138 | self.make_access_project) |
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139 | |
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140 | # read state in the base_class |
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141 | self.state_lock.acquire() |
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142 | self.allocation = self.state['allocation'] |
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143 | self.projects = self.state['projects'] |
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144 | self.keys = self.state['keys'] |
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145 | self.types = self.state['types'] |
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146 | # Add the ownership attributes to the authorizer. Note that the |
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147 | # indices of the allocation dict are strings, but the attributes are |
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148 | # fedids, so there is a conversion. |
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149 | for k in self.allocation.keys(): |
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150 | for o in self.allocation[k].get('owners', []): |
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151 | self.auth.set_attribute(o, fedid(hexstr=k)) |
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152 | if self.allocation[k].has_key('userconfig'): |
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153 | sfid = self.allocation[k]['userconfig'] |
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154 | fid = fedid(hexstr=sfid) |
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155 | self.auth.set_attribute(fid, "/%s" % sfid) |
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156 | self.state_lock.release() |
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157 | |
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158 | |
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159 | self.soap_services = {\ |
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160 | 'RequestAccess': soap_handler("RequestAccess", self.RequestAccess), |
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161 | 'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess), |
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162 | 'StartSegment': soap_handler("StartSegment", self.StartSegment), |
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163 | 'TerminateSegment': soap_handler("TerminateSegment", |
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164 | self.TerminateSegment), |
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165 | } |
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166 | self.xmlrpc_services = {\ |
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167 | 'RequestAccess': xmlrpc_handler('RequestAccess', |
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168 | self.RequestAccess), |
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169 | 'ReleaseAccess': xmlrpc_handler('ReleaseAccess', |
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170 | self.ReleaseAccess), |
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171 | 'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment), |
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172 | 'TerminateSegment': xmlrpc_handler('TerminateSegment', |
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173 | self.TerminateSegment), |
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174 | } |
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175 | |
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176 | self.call_SetValue = service_caller('SetValue') |
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177 | self.call_GetValue = service_caller('GetValue', log=self.log) |
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178 | |
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179 | if not config.has_option("allocate", "uri"): |
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180 | self.allocate_project = \ |
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181 | allocate_project_local(config, auth) |
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182 | else: |
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183 | self.allocate_project = \ |
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184 | allocate_project_remote(config, auth) |
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185 | |
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186 | |
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187 | # If the project allocator exports services, put them in this object's |
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188 | # maps so that classes that instantiate this can call the services. |
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189 | self.soap_services.update(self.allocate_project.soap_services) |
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190 | self.xmlrpc_services.update(self.allocate_project.xmlrpc_services) |
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191 | |
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192 | @staticmethod |
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193 | def make_access_project(str): |
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194 | def parse_name(n): |
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195 | if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):]) |
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196 | else: return n |
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197 | |
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198 | str = str.strip() |
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199 | if str.startswith('(') and str.endswith(')'): |
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200 | str = str[1:-1] |
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201 | names = [ s.strip() for s in str.split(",")] |
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202 | if len(names) > 3: |
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203 | raise self.parse_error("More than three fields in name") |
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204 | first = names[0].split(":") |
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205 | if first == 'fedid:': |
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206 | del first[0] |
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207 | first[0] = fedid(hexstr=first[0]) |
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208 | names[0] = access_project(first[0], first[1:]) |
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209 | |
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210 | for i in range(1,2): |
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211 | names[i] = parse_name(names[i]) |
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212 | |
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213 | return tuple(names) |
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214 | else: |
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215 | raise self.parse_error('Bad mapping (unbalanced parens)') |
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216 | |
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217 | |
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218 | def lookup_access(self, req, fid): |
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219 | """ |
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220 | Determine the allowed access for this request. Return the access and |
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221 | which fields are dynamic. |
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222 | |
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223 | The fedid is needed to construct the request |
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224 | """ |
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225 | # Return values |
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226 | rp = access_project(None, ()) |
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227 | ru = None |
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228 | # This maps a valid user to the Emulab projects and users to use |
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229 | found, match = self.lookup_access_base(req, fid) |
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230 | tb, project, user = match |
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231 | |
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232 | if found == None: |
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233 | raise service_error(service_error.access, |
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234 | "Access denied - cannot map access") |
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235 | |
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236 | # resolve <dynamic> and <same> in found |
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237 | dyn_proj = False |
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238 | dyn_create_user = False |
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239 | dyn_service_user = False |
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240 | |
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241 | if found[0].name == "<same>": |
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242 | if project != None: |
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243 | rp.name = project |
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244 | else : |
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245 | raise service_error(\ |
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246 | service_error.server_config, |
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247 | "Project matched <same> when no project given") |
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248 | elif found[0].name == "<dynamic>": |
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249 | rp.name = None |
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250 | dyn_proj = True |
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251 | else: |
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252 | rp.name = found[0].name |
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253 | rp.node_types = found[0].node_types; |
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254 | |
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255 | if found[1] == "<same>": |
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256 | if user_match == "<any>": |
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257 | if user != None: rcu = user[0] |
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258 | else: raise service_error(\ |
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259 | service_error.server_config, |
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260 | "Matched <same> on anonymous request") |
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261 | else: |
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262 | rcu = user_match |
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263 | elif found[1] == "<dynamic>": |
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264 | rcu = None |
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265 | dyn_create_user = True |
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266 | else: |
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267 | rcu = found[1] |
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268 | |
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269 | if found[2] == "<same>": |
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270 | if user_match == "<any>": |
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271 | if user != None: rsu = user[0] |
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272 | else: raise service_error(\ |
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273 | service_error.server_config, |
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274 | "Matched <same> on anonymous request") |
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275 | else: |
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276 | rsu = user_match |
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277 | elif found[2] == "<dynamic>": |
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278 | rsu = None |
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279 | dyn_service_user = True |
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280 | else: |
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281 | rsu = found[2] |
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282 | |
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283 | return (rp, rcu, rsu), (dyn_create_user, dyn_service_user, dyn_proj),\ |
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284 | [ fid ] |
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285 | |
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286 | def do_project_allocation(self, dyn, project, user): |
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287 | """ |
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288 | Call the project allocation routines and return the info. |
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289 | """ |
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290 | if dyn: |
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291 | # Compose the dynamic project request |
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292 | # (only dynamic, dynamic currently allowed) |
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293 | preq = { 'AllocateProjectRequestBody': \ |
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294 | { 'project' : {\ |
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295 | 'user': [ \ |
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296 | { \ |
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297 | 'access': [ { |
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298 | 'sshPubkey': self.ssh_pubkey_file } ], |
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299 | 'role': "serviceAccess",\ |
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300 | }, \ |
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301 | { \ |
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302 | 'access': [ { |
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303 | 'sshPubkey': self.ssh_pubkey_file } ], |
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304 | 'role': "experimentCreation",\ |
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305 | }, \ |
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306 | ], \ |
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307 | }\ |
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308 | }\ |
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309 | } |
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310 | return self.allocate_project.dynamic_project(preq) |
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311 | else: |
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312 | preq = {'StaticProjectRequestBody' : \ |
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313 | { 'project': \ |
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314 | { 'name' : { 'localname' : project },\ |
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315 | 'user' : [ \ |
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316 | {\ |
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317 | 'userID': { 'localname' : user }, \ |
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318 | 'access': [ { |
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319 | 'sshPubkey': self.ssh_pubkey_file } ], |
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320 | 'role': 'experimentCreation'\ |
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321 | },\ |
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322 | {\ |
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323 | 'userID': { 'localname' : user}, \ |
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324 | 'access': [ { |
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325 | 'sshPubkey': self.ssh_pubkey_file } ], |
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326 | 'role': 'serviceAccess'\ |
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327 | },\ |
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328 | ]}\ |
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329 | }\ |
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330 | } |
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331 | return self.allocate_project.static_project(preq) |
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332 | |
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333 | def save_project_state(self, aid, ap, dyn, owners): |
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334 | """ |
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335 | Parse out and save the information relevant to the project created for |
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336 | this experiment. That info is largely in ap and owners. dyn indicates |
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337 | that the project was created dynamically. Return the user and project |
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338 | names. |
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339 | """ |
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340 | self.state_lock.acquire() |
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341 | self.allocation[aid] = { } |
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342 | try: |
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343 | pname = ap['project']['name']['localname'] |
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344 | except KeyError: |
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345 | pname = None |
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346 | |
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347 | if dyn: |
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348 | if not pname: |
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349 | self.state_lock.release() |
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350 | raise service_error(service_error.internal, |
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351 | "Misformed allocation response?") |
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352 | if pname in self.projects: self.projects[pname] += 1 |
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353 | else: self.projects[pname] = 1 |
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354 | self.allocation[aid]['project'] = pname |
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355 | else: |
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356 | # sproject is a static project associated with this allocation. |
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357 | self.allocation[aid]['sproject'] = pname |
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358 | |
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359 | self.allocation[aid]['keys'] = [ ] |
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360 | |
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361 | try: |
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362 | for u in ap['project']['user']: |
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363 | uname = u['userID']['localname'] |
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364 | if u['role'] == 'experimentCreation': |
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365 | self.allocation[aid]['user'] = uname |
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366 | for k in [ k['sshPubkey'] for k in u['access'] \ |
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367 | if k.has_key('sshPubkey') ]: |
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368 | kv = "%s:%s" % (uname, k) |
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369 | if self.keys.has_key(kv): self.keys[kv] += 1 |
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370 | else: self.keys[kv] = 1 |
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371 | self.allocation[aid]['keys'].append((uname, k)) |
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372 | except KeyError: |
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373 | self.state_lock.release() |
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374 | raise service_error(service_error.internal, |
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375 | "Misformed allocation response?") |
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376 | |
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377 | self.allocation[aid]['owners'] = owners |
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378 | self.write_state() |
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379 | self.state_lock.release() |
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380 | return (pname, uname) |
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381 | |
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382 | def RequestAccess(self, req, fid): |
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383 | """ |
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384 | Handle the access request. Proxy if not for us. |
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385 | |
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386 | Parse out the fields and make the allocations or rejections if for us, |
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387 | otherwise, assuming we're willing to proxy, proxy the request out. |
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388 | """ |
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389 | |
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390 | def gateway_hardware(h): |
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391 | if h == 'GWTYPE': return self.portal_type or 'GWTYPE' |
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392 | else: return h |
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393 | |
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394 | def get_export_project(svcs): |
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395 | """ |
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396 | if the service requests includes one to export a project, return |
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397 | that project. |
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398 | """ |
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399 | rv = None |
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400 | for s in svcs: |
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401 | if s.get('name', '') == 'project_export' and \ |
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402 | s.get('visibility', '') == 'export': |
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403 | if not rv: |
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404 | for a in s.get('feddAttr', []): |
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405 | if a.get('attribute', '') == 'project' \ |
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406 | and 'value' in a: |
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407 | rv = a['value'] |
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408 | else: |
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409 | raise service_error(service_error, access, |
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410 | 'Requesting multiple project exports is ' + \ |
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411 | 'not supported'); |
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412 | return rv |
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413 | |
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414 | # The dance to get into the request body |
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415 | if req.has_key('RequestAccessRequestBody'): |
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416 | req = req['RequestAccessRequestBody'] |
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417 | else: |
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418 | raise service_error(service_error.req, "No request!?") |
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419 | |
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420 | |
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421 | found, dyn, owners = self.lookup_access(req, fid) |
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422 | ap = None |
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423 | |
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424 | # if this includes a project export request and the exported |
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425 | # project is not the access project, access denied. |
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426 | if 'service' in req: |
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427 | ep = get_export_project(req['service']) |
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428 | if ep and ep != found[0].name: |
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429 | raise service_error(service_error.access, |
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430 | "Cannot export %s" % ep) |
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431 | |
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432 | if self.ssh_pubkey_file: |
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433 | ap = self.do_project_allocation(dyn[1], found[0].name, found[1]) |
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434 | else: |
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435 | raise service_error(service_error.internal, |
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436 | "SSH access parameters required") |
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437 | # keep track of what's been added |
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438 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
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439 | aid = unicode(allocID) |
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440 | |
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441 | pname, uname = self.save_project_state(aid, ap, dyn[1], owners) |
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442 | |
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443 | services, svc_state = self.export_services(req.get('service',[]), |
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444 | pname, uname) |
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445 | self.state_lock.acquire() |
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446 | # Store services state in global state |
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447 | for k, v in svc_state.items(): |
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448 | self.allocation[aid][k] = v |
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449 | self.write_state() |
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450 | self.state_lock.release() |
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451 | # Give the owners the right to change this allocation |
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452 | for o in owners: |
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453 | self.auth.set_attribute(o, allocID) |
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454 | try: |
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455 | f = open("%s/%s.pem" % (self.certdir, aid), "w") |
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456 | print >>f, alloc_cert |
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457 | f.close() |
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458 | except EnvironmentError, e: |
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459 | raise service_error(service_error.internal, |
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460 | "Can't open %s/%s : %s" % (self.certdir, aid, e)) |
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461 | resp = self.build_access_response({ 'fedid': allocID } , |
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462 | ap, services) |
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463 | return resp |
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464 | |
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465 | def do_release_project(self, del_project, del_users, del_types): |
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466 | """ |
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467 | If a project and users has to be deleted, make the call. |
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468 | """ |
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469 | msg = { 'project': { }} |
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470 | if del_project: |
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471 | msg['project']['name']= {'localname': del_project} |
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472 | users = [ ] |
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473 | for u in del_users.keys(): |
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474 | users.append({ 'userID': { 'localname': u },\ |
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475 | 'access' : \ |
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476 | [ {'sshPubkey' : s } for s in del_users[u]]\ |
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477 | }) |
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478 | if users: |
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479 | msg['project']['user'] = users |
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480 | if len(del_types) > 0: |
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481 | msg['resources'] = { 'node': \ |
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482 | [ {'hardware': [ h ] } for h in del_types ]\ |
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483 | } |
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484 | if self.allocate_project.release_project: |
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485 | msg = { 'ReleaseProjectRequestBody' : msg} |
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486 | self.allocate_project.release_project(msg) |
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487 | |
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488 | def ReleaseAccess(self, req, fid): |
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489 | # The dance to get into the request body |
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490 | if req.has_key('ReleaseAccessRequestBody'): |
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491 | req = req['ReleaseAccessRequestBody'] |
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492 | else: |
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493 | raise service_error(service_error.req, "No request!?") |
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494 | |
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495 | try: |
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496 | if req['allocID'].has_key('localname'): |
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497 | auth_attr = aid = req['allocID']['localname'] |
---|
498 | elif req['allocID'].has_key('fedid'): |
---|
499 | aid = unicode(req['allocID']['fedid']) |
---|
500 | auth_attr = req['allocID']['fedid'] |
---|
501 | else: |
---|
502 | raise service_error(service_error.req, |
---|
503 | "Only localnames and fedids are understood") |
---|
504 | except KeyError: |
---|
505 | raise service_error(service_error.req, "Badly formed request") |
---|
506 | |
---|
507 | self.log.debug("[access] deallocation requested for %s", aid) |
---|
508 | if not self.auth.check_attribute(fid, auth_attr): |
---|
509 | self.log.debug("[access] deallocation denied for %s", aid) |
---|
510 | raise service_error(service_error.access, "Access Denied") |
---|
511 | |
---|
512 | # If we know this allocation, reduce the reference counts and |
---|
513 | # remove the local allocations. Otherwise report an error. If |
---|
514 | # there is an allocation to delete, del_users will be a dictonary |
---|
515 | # of sets where the key is the user that owns the keys in the set. |
---|
516 | # We use a set to avoid duplicates. del_project is just the name |
---|
517 | # of any dynamic project to delete. We're somewhat lazy about |
---|
518 | # deleting authorization attributes. Having access to something |
---|
519 | # that doesn't exist isn't harmful. |
---|
520 | del_users = { } |
---|
521 | del_project = None |
---|
522 | del_types = set() |
---|
523 | |
---|
524 | self.state_lock.acquire() |
---|
525 | if aid in self.allocation: |
---|
526 | self.log.debug("Found allocation for %s" %aid) |
---|
527 | for k in self.allocation[aid]['keys']: |
---|
528 | kk = "%s:%s" % k |
---|
529 | self.keys[kk] -= 1 |
---|
530 | if self.keys[kk] == 0: |
---|
531 | if not del_users.has_key(k[0]): |
---|
532 | del_users[k[0]] = set() |
---|
533 | del_users[k[0]].add(k[1]) |
---|
534 | del self.keys[kk] |
---|
535 | |
---|
536 | if 'project' in self.allocation[aid]: |
---|
537 | pname = self.allocation[aid]['project'] |
---|
538 | self.projects[pname] -= 1 |
---|
539 | if self.projects[pname] == 0: |
---|
540 | del_project = pname |
---|
541 | del self.projects[pname] |
---|
542 | |
---|
543 | if 'types' in self.allocation[aid]: |
---|
544 | for t in self.allocation[aid]['types']: |
---|
545 | self.types[t] -= 1 |
---|
546 | if self.types[t] == 0: |
---|
547 | if not del_project: del_project = t[0] |
---|
548 | del_types.add(t[1]) |
---|
549 | del self.types[t] |
---|
550 | |
---|
551 | del self.allocation[aid] |
---|
552 | self.write_state() |
---|
553 | self.state_lock.release() |
---|
554 | # If we actually have resources to deallocate, prepare the call. |
---|
555 | if del_project or del_users: |
---|
556 | self.do_release_project(del_project, del_users, del_types) |
---|
557 | # And remove the access cert |
---|
558 | cf = "%s/%s.pem" % (self.certdir, aid) |
---|
559 | self.log.debug("Removing %s" % cf) |
---|
560 | os.remove(cf) |
---|
561 | return { 'allocID': req['allocID'] } |
---|
562 | else: |
---|
563 | self.state_lock.release() |
---|
564 | raise service_error(service_error.req, "No such allocation") |
---|
565 | |
---|
566 | |
---|
567 | def generate_ns2(self, topo, expfn, softdir, connInfo): |
---|
568 | class dragon_commands: |
---|
569 | """ |
---|
570 | Functor to spit out approrpiate dragon commands for nodes listed in |
---|
571 | the connectivity description. The constructor makes a dict mapping |
---|
572 | dragon nodes to their parameters and the __call__ checks each |
---|
573 | element in turn for membership. |
---|
574 | """ |
---|
575 | def __init__(self, map): |
---|
576 | self.node_info = map |
---|
577 | |
---|
578 | def __call__(self, e): |
---|
579 | s = "" |
---|
580 | if isinstance(e, topdl.Computer): |
---|
581 | if self.node_info.has_key(e.name): |
---|
582 | info = self.node_info[e.name] |
---|
583 | for ifname, vlan, type in info: |
---|
584 | for i in e.interface: |
---|
585 | if i.name == ifname: |
---|
586 | addr = i.get_attribute('ip4_address') |
---|
587 | subs = i.substrate[0] |
---|
588 | break |
---|
589 | else: |
---|
590 | raise service_error(service_error.internal, |
---|
591 | "No interface %s on element %s" % \ |
---|
592 | (ifname, e.name)) |
---|
593 | # XXX: do netmask right |
---|
594 | if type =='link': |
---|
595 | s = ("tb-allow-external ${%s} dragonportal " + \ |
---|
596 | "ip %s vlan %s netmask 255.255.255.0\n") % \ |
---|
597 | (e.name, addr, vlan) |
---|
598 | elif type =='lan': |
---|
599 | s = ("tb-allow-external ${%s} dragonportal " + \ |
---|
600 | "ip %s vlan %s usurp %s\n") % \ |
---|
601 | (e.name, addr, vlan, subs) |
---|
602 | else: |
---|
603 | raise service_error(service_error_internal, |
---|
604 | "Unknown DRAGON type %s" % type) |
---|
605 | return s |
---|
606 | |
---|
607 | class not_dragon: |
---|
608 | def __init__(self, map): |
---|
609 | self.nodes = set(map.keys()) |
---|
610 | |
---|
611 | def __call__(self, e): |
---|
612 | return e.name not in self.nodes |
---|
613 | |
---|
614 | |
---|
615 | t = topo.clone() |
---|
616 | |
---|
617 | dragon_map = { } |
---|
618 | for i in [ i for i in connInfo if i['type'] == 'transit']: |
---|
619 | for a in i.get('fedAttr', []): |
---|
620 | if a['attribute'] == 'vlan_id': |
---|
621 | vlan = a['value'] |
---|
622 | break |
---|
623 | else: |
---|
624 | raise service_error(service_error.internal, "No vlan tag") |
---|
625 | members = i.get('member', []) |
---|
626 | if len(members) > 1: type = 'lan' |
---|
627 | else: type = 'link' |
---|
628 | |
---|
629 | try: |
---|
630 | for m in members: |
---|
631 | if m['element'] in dragon_map: |
---|
632 | dragon_map[m['element']].append(( m['interface'], |
---|
633 | vlan, type)) |
---|
634 | else: |
---|
635 | dragon_map[m['element']] = [( m['interface'], |
---|
636 | vlan, type),] |
---|
637 | except KeyError: |
---|
638 | raise service_error(service_error.req, |
---|
639 | "Missing connectivity info") |
---|
640 | |
---|
641 | # Weed out the things we aren't going to instantiate: Segments, portal |
---|
642 | # substrates, and portal interfaces. (The copy in the for loop allows |
---|
643 | # us to delete from e.elements in side the for loop). While we're |
---|
644 | # touching all the elements, we also adjust paths from the original |
---|
645 | # testbed to local testbed paths and put the federation commands into |
---|
646 | # the start commands |
---|
647 | for e in [e for e in t.elements]: |
---|
648 | if isinstance(e, topdl.Segment): |
---|
649 | t.elements.remove(e) |
---|
650 | if isinstance(e, topdl.Computer): |
---|
651 | self.add_kit(e, self.federation_software) |
---|
652 | if e.get_attribute('portal') and self.portal_startcommand: |
---|
653 | # Add local portal support software |
---|
654 | self.add_kit(e, self.portal_software) |
---|
655 | # Portals never have a user-specified start command |
---|
656 | e.set_attribute('startup', self.portal_startcommand) |
---|
657 | elif self.node_startcommand: |
---|
658 | if e.get_attribute('startup'): |
---|
659 | e.set_attribute('startup', "%s \\$USER '%s'" % \ |
---|
660 | (self.node_startcommand, |
---|
661 | e.get_attribute('startup'))) |
---|
662 | else: |
---|
663 | e.set_attribute('startup', self.node_startcommand) |
---|
664 | |
---|
665 | dinf = [i[0] for i in dragon_map.get(e.name, []) ] |
---|
666 | # Remove portal interfaces that do not connect to DRAGON |
---|
667 | e.interface = [i for i in e.interface \ |
---|
668 | if not i.get_attribute('portal') or i.name in dinf ] |
---|
669 | # Fix software paths |
---|
670 | for s in getattr(e, 'software', []): |
---|
671 | s.location = re.sub("^.*/", softdir, s.location) |
---|
672 | |
---|
673 | t.substrates = [ s.clone() for s in t.substrates ] |
---|
674 | t.incorporate_elements() |
---|
675 | |
---|
676 | # Customize the ns2 output for local portal commands and images |
---|
677 | filters = [] |
---|
678 | |
---|
679 | if self.dragon_endpoint: |
---|
680 | add_filter = not_dragon(dragon_map) |
---|
681 | filters.append(dragon_commands(dragon_map)) |
---|
682 | else: |
---|
683 | add_filter = None |
---|
684 | |
---|
685 | if self.portal_command: |
---|
686 | filters.append(topdl.generate_portal_command_filter( |
---|
687 | self.portal_command, add_filter=add_filter)) |
---|
688 | |
---|
689 | if self.portal_image: |
---|
690 | filters.append(topdl.generate_portal_image_filter( |
---|
691 | self.portal_image)) |
---|
692 | |
---|
693 | if self.portal_type: |
---|
694 | filters.append(topdl.generate_portal_hardware_filter( |
---|
695 | self.portal_type)) |
---|
696 | |
---|
697 | # Convert to ns and write it out |
---|
698 | expfile = topdl.topology_to_ns2(t, filters) |
---|
699 | try: |
---|
700 | f = open(expfn, "w") |
---|
701 | print >>f, expfile |
---|
702 | f.close() |
---|
703 | except EnvironmentError: |
---|
704 | raise service_error(service_error.internal, |
---|
705 | "Cannot write experiment file %s: %s" % (expfn,e)) |
---|
706 | |
---|
707 | def configure_userconf(self, services): |
---|
708 | """ |
---|
709 | If the userconf service was imported, collect the configuration data. |
---|
710 | """ |
---|
711 | for s in services: |
---|
712 | s_name = s.get('name', '') |
---|
713 | s_vis = s.get('visibility','') |
---|
714 | if s_name == 'userconfig' and s_vis == 'import': |
---|
715 | # Collect ther server and certificate info. |
---|
716 | u = s.get('server', None) |
---|
717 | for a in s.get('fedAttr', []): |
---|
718 | if a.get('attribute',"") == 'cert': |
---|
719 | cert = a.get('value', None) |
---|
720 | break |
---|
721 | else: |
---|
722 | cert = None |
---|
723 | |
---|
724 | if cert: |
---|
725 | # Make a temporary certificate file for get_url. The |
---|
726 | # finally clause removes it whether something goes |
---|
727 | # wrong (including an exception from get_url) or not. |
---|
728 | try: |
---|
729 | tfos, tn = tempfile.mkstemp(suffix=".pem") |
---|
730 | tf = os.fdopen(tfos, 'w') |
---|
731 | print >>tf, cert |
---|
732 | tf.close() |
---|
733 | self.log.debug("Getting userconf info: %s" % u) |
---|
734 | get_url(u, tn, tmpdir, "userconf") |
---|
735 | self.log.debug("Got userconf info: %s" % u) |
---|
736 | except EnvironmentError, e: |
---|
737 | raise service_error(service.error.internal, |
---|
738 | "Cannot create temp file for " + |
---|
739 | "userconfig certificates: %s e") |
---|
740 | except: |
---|
741 | t, v, st = sys.exc_info() |
---|
742 | raise service_error(service_error.internal, |
---|
743 | "Error retrieving %s: %s" % (s, v)) |
---|
744 | finally: |
---|
745 | if tn: os.remove(tn) |
---|
746 | else: |
---|
747 | raise service_error(service_error.req, |
---|
748 | "No certificate for retreiving userconfig") |
---|
749 | break |
---|
750 | |
---|
751 | def add_seer_node(self, topo, name, startup): |
---|
752 | """ |
---|
753 | Add a seer node to the given topology, with the startup command passed |
---|
754 | in. |
---|
755 | """ |
---|
756 | c_node = topdl.Computer( |
---|
757 | name=name, |
---|
758 | os= topdl.OperatingSystem( |
---|
759 | attribute=[ |
---|
760 | { 'attribute': 'osid', |
---|
761 | 'value': self.local_seer_image }, |
---|
762 | ]), |
---|
763 | attribute=[ |
---|
764 | { 'attribute': 'startup', 'value': startup }, |
---|
765 | ] |
---|
766 | ) |
---|
767 | self.add_kit(c_node, self.local_seer_software) |
---|
768 | topo.elements.append(c_node) |
---|
769 | |
---|
770 | def configure_seer_services(self, services, topo, softdir): |
---|
771 | """ |
---|
772 | Make changes to the topology required for the seer requests being made. |
---|
773 | Specifically, add any control or master nodes required and set up the |
---|
774 | start commands on the nodes to interconnect them. |
---|
775 | """ |
---|
776 | local_seer = False # True if we need to add a control node |
---|
777 | collect_seer = False # True if there is a seer-master node |
---|
778 | seer_master= False # True if we need to add the seer-master |
---|
779 | for s in services: |
---|
780 | s_name = s.get('name', '') |
---|
781 | s_vis = s.get('visibility','') |
---|
782 | |
---|
783 | if s_name == 'local_seer_control' and s_vis == 'export': |
---|
784 | local_seer = True |
---|
785 | elif s_name == 'seer_master': |
---|
786 | if s_vis == 'import': |
---|
787 | collect_seer = True |
---|
788 | elif s_vis == 'export': |
---|
789 | seer_master = True |
---|
790 | |
---|
791 | # We've got the whole picture now, so add nodes if needed and configure |
---|
792 | # them to interconnect properly. |
---|
793 | if local_seer or seer_master: |
---|
794 | # Copy local seer control node software to the tempdir |
---|
795 | for l, f in self.local_seer_software: |
---|
796 | base = os.path.basename(f) |
---|
797 | copy_file(f, "%s/%s" % (softdir, base)) |
---|
798 | # If we're collecting seers somewhere the controllers need to talk to |
---|
799 | # the master. In testbeds that export the service, that will be a |
---|
800 | # local node that we'll add below. Elsewhere it will be the control |
---|
801 | # portal that will port forward to the exporting master. |
---|
802 | if local_seer: |
---|
803 | if collect_seer: |
---|
804 | startup = "%s -C %s" % (self.local_seer_start, "seer-master") |
---|
805 | else: |
---|
806 | startup = self.local_seer_start |
---|
807 | self.add_seer_node(topo, 'control', startup) |
---|
808 | # If this is the seer master, add that node, too. |
---|
809 | if seer_master: |
---|
810 | self.add_seer_node(topo, 'seer-master', self.seer_master_start) |
---|
811 | |
---|
812 | |
---|
813 | |
---|
814 | def StartSegment(self, req, fid): |
---|
815 | |
---|
816 | configs = set(('hosts', 'ssh_pubkey', 'ssh_secretkey')) |
---|
817 | |
---|
818 | err = None # Any service_error generated after tmpdir is created |
---|
819 | rv = None # Return value from segment creation |
---|
820 | |
---|
821 | try: |
---|
822 | req = req['StartSegmentRequestBody'] |
---|
823 | except KeyError: |
---|
824 | raise service_error(server_error.req, "Badly formed request") |
---|
825 | |
---|
826 | connInfo = req.get('connection', []) |
---|
827 | services = req.get('service', []) |
---|
828 | auth_attr = req['allocID']['fedid'] |
---|
829 | aid = "%s" % auth_attr |
---|
830 | attrs = req.get('fedAttr', []) |
---|
831 | if not self.auth.check_attribute(fid, auth_attr): |
---|
832 | raise service_error(service_error.access, "Access denied") |
---|
833 | else: |
---|
834 | # See if this is a replay of an earlier succeeded StartSegment - |
---|
835 | # sometimes SSL kills 'em. If so, replay the response rather than |
---|
836 | # redoing the allocation. |
---|
837 | self.state_lock.acquire() |
---|
838 | retval = self.allocation[aid].get('started', None) |
---|
839 | self.state_lock.release() |
---|
840 | if retval: |
---|
841 | self.log.warning("Duplicate StartSegment for %s: " % aid + \ |
---|
842 | "replaying response") |
---|
843 | return retval |
---|
844 | |
---|
845 | # A new request. Do it. |
---|
846 | |
---|
847 | if req.has_key('segmentdescription') and \ |
---|
848 | req['segmentdescription'].has_key('topdldescription'): |
---|
849 | topo = \ |
---|
850 | topdl.Topology(**req['segmentdescription']['topdldescription']) |
---|
851 | else: |
---|
852 | raise service_error(service_error.req, |
---|
853 | "Request missing segmentdescription'") |
---|
854 | |
---|
855 | master = req.get('master', False) |
---|
856 | |
---|
857 | certfile = "%s/%s.pem" % (self.certdir, auth_attr) |
---|
858 | try: |
---|
859 | tmpdir = tempfile.mkdtemp(prefix="access-") |
---|
860 | softdir = "%s/software" % tmpdir |
---|
861 | os.mkdir(softdir) |
---|
862 | except EnvironmentError: |
---|
863 | raise service_error(service_error.internal, "Cannot create tmp dir") |
---|
864 | |
---|
865 | # Try block alllows us to clean up temporary files. |
---|
866 | try: |
---|
867 | sw = set() |
---|
868 | for e in topo.elements: |
---|
869 | for s in getattr(e, 'software', []): |
---|
870 | sw.add(s.location) |
---|
871 | for s in sw: |
---|
872 | self.log.debug("Retrieving %s" % s) |
---|
873 | try: |
---|
874 | get_url(s, certfile, softdir) |
---|
875 | except: |
---|
876 | t, v, st = sys.exc_info() |
---|
877 | raise service_error(service_error.internal, |
---|
878 | "Error retrieving %s: %s" % (s, v)) |
---|
879 | |
---|
880 | # Copy local federation and portal node software to the tempdir |
---|
881 | for s in (self.federation_software, self.portal_software): |
---|
882 | for l, f in s: |
---|
883 | base = os.path.basename(f) |
---|
884 | copy_file(f, "%s/%s" % (softdir, base)) |
---|
885 | |
---|
886 | ename = None |
---|
887 | pubkey_base = None |
---|
888 | secretkey_base = None |
---|
889 | for a in attrs: |
---|
890 | if a['attribute'] in configs: |
---|
891 | try: |
---|
892 | self.log.debug("Retrieving %s from %s" % \ |
---|
893 | (a['attribute'], a['value'])) |
---|
894 | get_url(a['value'], certfile, tmpdir) |
---|
895 | except: |
---|
896 | t, v, st = sys.exc_info() |
---|
897 | raise service_error(service_error.internal, |
---|
898 | "Error retrieving %s: %s" % (s, v)) |
---|
899 | if a['attribute'] == 'ssh_pubkey': |
---|
900 | pubkey_base = a['value'].rpartition('/')[2] |
---|
901 | if a['attribute'] == 'ssh_secretkey': |
---|
902 | secretkey_base = a['value'].rpartition('/')[2] |
---|
903 | if a['attribute'] == 'experiment_name': |
---|
904 | ename = a['value'] |
---|
905 | |
---|
906 | if not ename: |
---|
907 | ename = "" |
---|
908 | for i in range(0,5): |
---|
909 | ename += random.choice(string.ascii_letters) |
---|
910 | self.log.warn("No experiment name: picked one randomly: %s" \ |
---|
911 | % ename) |
---|
912 | |
---|
913 | if not pubkey_base: |
---|
914 | raise service_error(service_error.req, |
---|
915 | "No public key attribute") |
---|
916 | |
---|
917 | if not secretkey_base: |
---|
918 | raise service_error(service_error.req, |
---|
919 | "No secret key attribute") |
---|
920 | |
---|
921 | # If the userconf service was imported, collect the configuration |
---|
922 | # data. |
---|
923 | self.configure_userconf(services) |
---|
924 | self.configure_seer_services(services, topo, softdir) |
---|
925 | |
---|
926 | proj = None |
---|
927 | user = None |
---|
928 | self.state_lock.acquire() |
---|
929 | if self.allocation.has_key(aid): |
---|
930 | proj = self.allocation[aid].get('project', None) |
---|
931 | if not proj: |
---|
932 | proj = self.allocation[aid].get('sproject', None) |
---|
933 | user = self.allocation[aid].get('user', None) |
---|
934 | self.allocation[aid]['experiment'] = ename |
---|
935 | self.allocation[aid]['log'] = [ ] |
---|
936 | # Create a logger that logs to the experiment's state object as |
---|
937 | # well as to the main log file. |
---|
938 | alloc_log = logging.getLogger('fedd.access.%s' % ename) |
---|
939 | h = logging.StreamHandler( |
---|
940 | list_log.list_log(self.allocation[aid]['log'])) |
---|
941 | # XXX: there should be a global one of these rather than |
---|
942 | # repeating the code. |
---|
943 | h.setFormatter(logging.Formatter( |
---|
944 | "%(asctime)s %(name)s %(message)s", |
---|
945 | '%d %b %y %H:%M:%S')) |
---|
946 | alloc_log.addHandler(h) |
---|
947 | self.write_state() |
---|
948 | self.state_lock.release() |
---|
949 | |
---|
950 | if not proj: |
---|
951 | raise service_error(service_error.internal, |
---|
952 | "Can't find project for %s" %aid) |
---|
953 | |
---|
954 | if not user: |
---|
955 | raise service_error(service_error.internal, |
---|
956 | "Can't find creation user for %s" %aid) |
---|
957 | |
---|
958 | self.export_store_info(certfile, proj, ename, connInfo) |
---|
959 | self.import_store_info(certfile, connInfo) |
---|
960 | |
---|
961 | expfile = "%s/experiment.tcl" % tmpdir |
---|
962 | |
---|
963 | self.generate_portal_configs(topo, pubkey_base, |
---|
964 | secretkey_base, tmpdir, master, proj, ename, connInfo, |
---|
965 | services) |
---|
966 | self.generate_ns2(topo, expfile, |
---|
967 | "/proj/%s/software/%s/" % (proj, ename), connInfo) |
---|
968 | |
---|
969 | starter = self.start_segment(keyfile=self.ssh_privkey_file, |
---|
970 | debug=self.create_debug, log=alloc_log) |
---|
971 | rv = starter(self, ename, proj, user, expfile, tmpdir) |
---|
972 | rvtopo = topo.clone() |
---|
973 | |
---|
974 | # Copy the assigned names into the return topology |
---|
975 | embedding = [ ] |
---|
976 | for n in starter.node: |
---|
977 | embedding.append({ |
---|
978 | 'toponame': n, |
---|
979 | 'physname': ["%s%s" % (starter.node[n], self.domain)], |
---|
980 | }) |
---|
981 | |
---|
982 | |
---|
983 | except service_error, e: |
---|
984 | err = e |
---|
985 | except e: |
---|
986 | err = service_error(service_error.internal, str(e)) |
---|
987 | |
---|
988 | # Walk up tmpdir, deleting as we go |
---|
989 | if self.cleanup: |
---|
990 | self.log.debug("[StartSegment]: removing %s" % tmpdir) |
---|
991 | for path, dirs, files in os.walk(tmpdir, topdown=False): |
---|
992 | for f in files: |
---|
993 | os.remove(os.path.join(path, f)) |
---|
994 | for d in dirs: |
---|
995 | os.rmdir(os.path.join(path, d)) |
---|
996 | os.rmdir(tmpdir) |
---|
997 | else: |
---|
998 | self.log.debug("[StartSegment]: not removing %s" % tmpdir) |
---|
999 | |
---|
1000 | if rv: |
---|
1001 | # Grab the log (this is some anal locking, but better safe than |
---|
1002 | # sorry) |
---|
1003 | self.state_lock.acquire() |
---|
1004 | logv = "".join(self.allocation[aid]['log']) |
---|
1005 | # It's possible that the StartSegment call gets retried (!). |
---|
1006 | # if the 'started' key is in the allocation, we'll return it rather |
---|
1007 | # than redo the setup. |
---|
1008 | self.allocation[aid]['started'] = { |
---|
1009 | 'allocID': req['allocID'], |
---|
1010 | 'allocationLog': logv, |
---|
1011 | 'segmentdescription': { |
---|
1012 | 'topdldescription': rvtopo.to_dict() |
---|
1013 | }, |
---|
1014 | 'embedding': embedding |
---|
1015 | } |
---|
1016 | retval = copy.copy(self.allocation[aid]['started']) |
---|
1017 | self.write_state() |
---|
1018 | self.state_lock.release() |
---|
1019 | return retval |
---|
1020 | elif err: |
---|
1021 | raise service_error(service_error.federant, |
---|
1022 | "Swapin failed: %s" % err) |
---|
1023 | else: |
---|
1024 | raise service_error(service_error.federant, "Swapin failed") |
---|
1025 | |
---|
1026 | def TerminateSegment(self, req, fid): |
---|
1027 | try: |
---|
1028 | req = req['TerminateSegmentRequestBody'] |
---|
1029 | except KeyError: |
---|
1030 | raise service_error(server_error.req, "Badly formed request") |
---|
1031 | |
---|
1032 | auth_attr = req['allocID']['fedid'] |
---|
1033 | aid = "%s" % auth_attr |
---|
1034 | attrs = req.get('fedAttr', []) |
---|
1035 | if not self.auth.check_attribute(fid, auth_attr): |
---|
1036 | raise service_error(service_error.access, "Access denied") |
---|
1037 | |
---|
1038 | self.state_lock.acquire() |
---|
1039 | if self.allocation.has_key(aid): |
---|
1040 | proj = self.allocation[aid].get('project', None) |
---|
1041 | if not proj: |
---|
1042 | proj = self.allocation[aid].get('sproject', None) |
---|
1043 | user = self.allocation[aid].get('user', None) |
---|
1044 | ename = self.allocation[aid].get('experiment', None) |
---|
1045 | else: |
---|
1046 | proj = None |
---|
1047 | user = None |
---|
1048 | ename = None |
---|
1049 | self.state_lock.release() |
---|
1050 | |
---|
1051 | if not proj: |
---|
1052 | raise service_error(service_error.internal, |
---|
1053 | "Can't find project for %s" % aid) |
---|
1054 | |
---|
1055 | if not user: |
---|
1056 | raise service_error(service_error.internal, |
---|
1057 | "Can't find creation user for %s" % aid) |
---|
1058 | if not ename: |
---|
1059 | raise service_error(service_error.internal, |
---|
1060 | "Can't find experiment name for %s" % aid) |
---|
1061 | stopper = self.stop_segment(keyfile=self.ssh_privkey_file, |
---|
1062 | debug=self.create_debug) |
---|
1063 | stopper(self, user, proj, ename) |
---|
1064 | return { 'allocID': req['allocID'] } |
---|