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 | import shlex |
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13 | |
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14 | from threading import * |
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15 | from M2Crypto.SSL import SSLError |
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16 | |
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17 | from util import * |
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18 | from deter import fedid, generate_fedid |
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19 | from authorizer import authorizer |
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20 | from service_error import service_error |
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21 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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22 | |
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23 | import httplib |
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24 | import tempfile |
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25 | from urlparse import urlparse |
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26 | |
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27 | from deter import topdl |
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28 | import list_log |
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29 | |
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30 | |
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31 | # Make log messages disappear if noone configures a fedd logger |
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32 | class nullHandler(logging.Handler): |
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33 | def emit(self, record): pass |
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34 | |
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35 | fl = logging.getLogger("fedd.access") |
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36 | fl.addHandler(nullHandler()) |
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37 | |
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38 | class access_base: |
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39 | """ |
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40 | The implementation of access control based on mapping users to projects. |
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41 | |
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42 | Users can be mapped to existing projects or have projects created |
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43 | dynamically. This implements both direct requests and proxies. |
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44 | """ |
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45 | |
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46 | class parse_error(RuntimeError): pass |
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47 | |
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48 | class access_attribute: |
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49 | def __init__(self, attr, value, pri=1): |
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50 | self.attr = attr |
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51 | self.value = value |
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52 | self.priority = pri |
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53 | def __str__(self): |
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54 | return "%s: %s (%d)" % (self.attr, self.value, self.priority) |
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55 | |
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56 | def __init__(self, config=None, auth=None): |
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57 | """ |
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58 | Initializer. Pulls parameters out of the ConfigParser's access section. |
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59 | """ |
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60 | |
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61 | # Make sure that the configuration is in place |
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62 | if not config: |
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63 | raise RunTimeError("No config to fedd.access") |
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64 | |
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65 | self.project_priority = config.getboolean("access", "project_priority") |
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66 | |
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67 | self.certdir = config.get("access","certdir") |
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68 | self.create_debug = config.getboolean("access", "create_debug") |
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69 | self.cleanup = not config.getboolean("access", "leave_tmpfiles") |
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70 | self.access_type = config.get("access", "type") |
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71 | self.log = logging.getLogger("fedd.access") |
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72 | set_log_level(config, "access", self.log) |
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73 | self.state_lock = Lock() |
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74 | self.state = { } |
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75 | # subclasses fill with what and how they export. |
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76 | self.exports = { } |
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77 | # XXX: Configurable |
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78 | self.imports = set(('SMB', 'seer', 'userconfig', 'seer_master', |
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79 | 'hide_hosts')) |
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80 | |
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81 | if auth: self.auth = auth |
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82 | else: |
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83 | self.log.error(\ |
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84 | "[access]: No authorizer initialized, creating local one.") |
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85 | auth = authorizer() |
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86 | |
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87 | self.state_filename = config.get("access", "access_state") |
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88 | self.read_state() |
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89 | |
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90 | # Keep cert_file and cert_pwd coming from the same place |
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91 | self.cert_file = config.get("access", "cert_file") |
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92 | if self.cert_file: |
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93 | self.cert_pwd = config.get("access", "cert_pw") |
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94 | else: |
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95 | self.cert_file = config.get("globals", "cert_file") |
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96 | self.sert_pwd = config.get("globals", "cert_pw") |
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97 | |
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98 | self.nat_portal = None |
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99 | |
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100 | self.trusted_certs = config.get("access", "trusted_certs") or \ |
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101 | config.get("globals", "trusted_certs") |
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102 | |
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103 | |
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104 | @staticmethod |
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105 | def software_list(v): |
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106 | """ |
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107 | From a string containing a sequence of space separated pairs, return a |
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108 | list of tuples with pairs of location and file. |
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109 | """ |
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110 | l = [ ] |
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111 | if v: |
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112 | ps = v.split(" ") |
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113 | while len(ps): |
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114 | loc, file = ps[0:2] |
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115 | del ps[0:2] |
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116 | l.append((loc, file)) |
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117 | return l |
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118 | |
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119 | @staticmethod |
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120 | def add_kit(e, kit): |
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121 | """ |
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122 | Add a Software object created from the list of (install, location) |
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123 | tuples passed as kit to the software attribute of an object e. We |
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124 | do this enough to break out the code, but it's kind of a hack to |
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125 | avoid changing the old tuple rep. |
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126 | """ |
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127 | |
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128 | s = [ topdl.Software(install=i, location=l) for i, l in kit] |
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129 | |
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130 | if isinstance(e.software, list): e.software.extend(s) |
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131 | else: e.software = s |
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132 | |
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133 | |
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134 | def read_access(self, fn, access_obj=None, default=[]): |
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135 | """ |
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136 | Read an access DB of the form |
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137 | abac.attribute -> local_auth_data |
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138 | The access dict is filled with mappings from the abac attributes (as |
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139 | strings) to the access objects. The objects are strings by default, |
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140 | but the class constructor is called with the string following the -> |
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141 | and whitespace in the file. |
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142 | """ |
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143 | |
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144 | map_re = re.compile("(\S+)\s+->\s+(.*)") |
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145 | priority_re = re.compile("([^,]+),\s*(\d+)") |
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146 | |
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147 | if access_obj is None: |
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148 | access_obj = lambda(x): "%s" % x |
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149 | |
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150 | self.access = [] |
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151 | priorities = { } |
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152 | |
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153 | f = open(fn, 'r') |
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154 | try: |
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155 | lineno = 0 |
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156 | for line in f: |
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157 | lineno += 1 |
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158 | line = line.strip(); |
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159 | if len(line) == 0 or line.startswith('#'): |
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160 | continue |
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161 | m = map_re.match(line) |
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162 | if m != None: |
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163 | self.access.append(access_base.access_attribute(m.group(1), |
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164 | access_obj(m.group(2)))) |
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165 | continue |
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166 | |
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167 | # If a priority is found, collect them |
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168 | m = priority_re.match(line) |
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169 | if m: |
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170 | try: |
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171 | priorities[m.group(1)] = int(m.group(2)) |
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172 | except ValueError, e: |
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173 | if self.log: |
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174 | self.log.debug("Bad priority in %s line %d" % \ |
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175 | (fn, lineno)) |
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176 | continue |
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177 | |
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178 | # Nothing matched to here: unknown line - raise exception |
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179 | # (finally will close f) |
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180 | raise self.parse_error( |
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181 | "Unknown statement at line %d of %s" % \ |
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182 | (lineno, fn)) |
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183 | finally: |
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184 | if f: f.close() |
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185 | |
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186 | # Set priorities |
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187 | for a in self.access: |
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188 | if a.attr in priorities: |
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189 | a.priority = priorities[a.attr] |
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190 | |
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191 | # default access mappings |
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192 | for a, v in default: |
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193 | self.access.append( |
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194 | access_base.access_attribute(attr=a, value=v, pri=0)) |
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195 | |
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196 | |
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197 | |
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198 | def write_state(self): |
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199 | if self.state_filename: |
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200 | try: |
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201 | f = open(self.state_filename, 'w') |
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202 | pickle.dump(self.state, f) |
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203 | self.log.debug("Wrote state to %s" % self.state_filename) |
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204 | except EnvironmentError, e: |
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205 | self.log.error("Can't write file %s: %s" % \ |
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206 | (self.state_filename, e)) |
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207 | except pickle.PicklingError, e: |
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208 | self.log.error("Pickling problem: %s" % e) |
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209 | except TypeError, e: |
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210 | self.log.error("Pickling problem (TypeError): %s" % e) |
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211 | |
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212 | |
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213 | def read_state(self): |
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214 | """ |
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215 | Read a new copy of access state. Old state is overwritten. |
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216 | |
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217 | State format is a simple pickling of the state dictionary. |
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218 | """ |
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219 | if self.state_filename: |
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220 | try: |
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221 | f = open(self.state_filename, "r") |
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222 | self.state = pickle.load(f) |
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223 | self.log.debug("[read_state]: Read state from %s" % \ |
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224 | self.state_filename) |
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225 | except EnvironmentError, e: |
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226 | self.log.warning(("[read_state]: No saved state: " +\ |
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227 | "Can't open %s: %s") % (self.state_filename, e)) |
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228 | except EOFError, e: |
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229 | self.log.warning(("[read_state]: " +\ |
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230 | "Empty or damaged state file: %s:") % \ |
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231 | self.state_filename) |
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232 | except pickle.UnpicklingError, e: |
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233 | self.log.warning(("[read_state]: No saved state: " + \ |
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234 | "Unpickling failed: %s") % e) |
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235 | |
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236 | def append_allocation_authorization(self, aid, attrs, |
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237 | need_state_lock=False, write_state_file=False, state_attr='state'): |
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238 | """ |
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239 | Append the authorization information to system state. By default we |
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240 | assume this is called with the state lock and with a write of the state |
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241 | file in the near future, need_state_lock and write_state_file can |
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242 | override this. The state_attr is the attribute in the access class |
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243 | that holds the per allocation information. Some complex classes use |
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244 | different names for the dict. |
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245 | """ |
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246 | |
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247 | for p, a in attrs: |
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248 | self.auth.set_attribute(p, a) |
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249 | self.auth.save() |
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250 | |
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251 | if need_state_lock: self.state_lock.acquire() |
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252 | d = getattr(self, state_attr) |
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253 | if aid in d and 'auth' in d[aid]: |
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254 | d[aid]['auth'].update(attrs) |
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255 | if write_state_file: self.write_state() |
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256 | if need_state_lock: self.state_lock.release() |
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257 | |
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258 | def clear_allocation_authorization(self, aid, need_state_lock=False, |
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259 | write_state_file=False, state_attr='state'): |
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260 | """ |
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261 | Attrs is a set of attribute principal pairs that need to be removed |
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262 | from the authenticator. Remove them and save the authenticator. See |
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263 | append_allocation_authorization for the various overrides. |
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264 | """ |
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265 | |
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266 | if need_state_lock: self.state_lock.acquire() |
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267 | d = getattr(self, state_attr) |
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268 | if aid in d and 'auth' in d[aid]: |
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269 | for p, a in d[aid]['auth']: |
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270 | self.auth.unset_attribute(p, a) |
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271 | d[aid]['auth'] = set() |
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272 | if write_state_file: self.write_state() |
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273 | if need_state_lock: self.state_lock.release() |
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274 | self.auth.save() |
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275 | |
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276 | def lookup_access(self, req, fid, filter=None, compare=None): |
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277 | """ |
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278 | Check all the attributes that this controller knows how to map and see |
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279 | if the requester is allowed to use any of them. If so return one. |
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280 | Filter defined the objects to check - it's a function that returns true |
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281 | for the objects to check - and cmp defines the order to check them in |
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282 | as the cmp field of sorted(). If filter is None, all possibilities are |
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283 | checked. If cmp is None, the choices are sorted by priority. |
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284 | """ |
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285 | |
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286 | # Import request credentials into this (clone later??) |
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287 | if self.auth.import_credentials( |
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288 | data_list=req.get('abac_credential', [])): |
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289 | self.auth.save() |
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290 | |
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291 | # NB: in the default case (the else), the comparison order is reversed |
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292 | # so numerically larger priorities are checked first. |
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293 | if compare: c = compare |
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294 | else: c = lambda a, b: cmp(b,a) |
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295 | |
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296 | if filter: f = filter |
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297 | else: f = lambda(x): True |
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298 | |
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299 | check = sorted([ a for a in self.access if f(a)], cmp=c) |
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300 | |
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301 | # Check every attribute that we know how to map and take the first |
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302 | # success. |
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303 | fail_proofs = [ ] |
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304 | for attr in check: |
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305 | access_ok, proof = self.auth.check_attribute(fid, attr.attr, |
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306 | with_proof=True) |
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307 | if access_ok: |
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308 | self.log.debug("Access succeeded for %s %s" % (attr.attr, fid)) |
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309 | return copy.copy(attr.value), [ fid ], proof |
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310 | else: |
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311 | fail_proofs.append(proof) |
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312 | self.log.debug("Access failed for %s %s" % (attr.attr, fid)) |
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313 | else: |
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314 | self.log.debug("Access denied for for %s" % fid) |
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315 | # We only return one fail proof because returning hundreds (which |
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316 | # is easy to do) locks up the fault mechanism. |
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317 | if len(fail_proofs) == 0: |
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318 | self.log.debug('No choices either: %s' % check) |
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319 | raise service_error(service_error.access, |
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320 | "Access denied - no way to grant requested access") |
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321 | raise service_error(service_error.access, "Access denied", |
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322 | proof=fail_proofs[0]) |
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323 | |
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324 | |
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325 | |
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326 | def get_handler(self, path, fid): |
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327 | """ |
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328 | This function is somewhat oddly named. It doesn't get a handler, it |
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329 | handles GETs. Specifically, it handls https GETs for retrieving data |
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330 | from the repository exported by the access server. |
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331 | """ |
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332 | self.log.info("Get handler %s %s" % (path, fid)) |
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333 | if len("%s" % fid) == 0: |
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334 | return (None, None) |
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335 | if self.auth.check_attribute(fid, path) and self.userconfdir: |
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336 | return ("%s/%s" % (self.userconfdir, path), "application/binary") |
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337 | else: |
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338 | return (None, None) |
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339 | |
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340 | def export_userconf(self, project): |
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341 | dev_null = None |
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342 | confid, confcert = generate_fedid("test", dir=self.userconfdir, |
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343 | log=self.log) |
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344 | conffilename = "%s/%s" % (self.userconfdir, str(confid)) |
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345 | cf = None |
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346 | try: |
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347 | cf = open(conffilename, "w") |
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348 | os.chmod(conffilename, stat.S_IRUSR | stat.S_IWUSR) |
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349 | except EnvironmentError, e: |
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350 | raise service_error(service_error.internal, |
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351 | "Cannot create user configuration data") |
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352 | |
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353 | try: |
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354 | dev_null = open("/dev/null", "a") |
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355 | except EnvironmentError, e: |
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356 | self.log.error("export_userconf: can't open /dev/null: %s" % e) |
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357 | |
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358 | cmd = "%s %s" % (self.userconfcmd, project) |
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359 | try: |
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360 | conf = subprocess.call(shlex.split(cmd), |
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361 | stdout=cf, stderr=dev_null, close_fds=True) |
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362 | except EnvironmentError,e: |
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363 | raise service_error(service_error.internal, |
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364 | "Could not run userconf command: %s %s" \ |
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365 | % (e.filename, e.strerror)) |
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366 | |
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367 | self.auth.set_attribute(confid, "/%s" % str(confid)) |
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368 | |
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369 | return confid, confcert |
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370 | |
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371 | def export_SMB(self, id, state, project, user, attrs): |
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372 | if project and user: |
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373 | return [{ |
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374 | 'id': id, |
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375 | 'name': 'SMB', |
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376 | 'visibility': 'export', |
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377 | 'server': 'http://fs:139', |
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378 | 'fedAttr': [ |
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379 | { 'attribute': 'SMBSHARE', 'value': 'USERS' }, |
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380 | { 'attribute': 'SMBUSER', 'value': user }, |
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381 | { 'attribute': 'SMBPROJ', 'value': project }, |
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382 | ] |
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383 | }] |
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384 | else: |
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385 | self.log.warn("Cannot export SMB w/o user and project") |
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386 | return [ ] |
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387 | |
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388 | def export_seer(self, id, state, project, user, attrs): |
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389 | return [{ |
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390 | 'id': id, |
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391 | 'name': 'seer', |
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392 | 'visibility': 'export', |
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393 | 'server': 'http://control:16606', |
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394 | }] |
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395 | |
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396 | def export_local_seer(self, id, state, project, user, attrs): |
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397 | return [{ |
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398 | 'id': id, |
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399 | 'name': 'local_seer_control', |
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400 | 'visibility': 'export', |
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401 | 'server': 'http://control:16606', |
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402 | }] |
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403 | |
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404 | def export_seer_master(self, id, state, project, user, attrs): |
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405 | return [{ |
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406 | 'id': id, |
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407 | 'name': 'seer_master', |
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408 | 'visibility': 'export', |
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409 | 'server': 'http://seer-master:17707', |
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410 | }] |
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411 | |
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412 | def export_tmcd(self, id, state, project, user, attrs): |
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413 | return [{ |
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414 | 'id': id, |
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415 | 'name': 'seer', |
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416 | 'visibility': 'export', |
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417 | 'server': 'http://boss:7777', |
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418 | }] |
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419 | |
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420 | def export_userconfig(self, id, state, project, user, attrs): |
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421 | if self.userconfdir and self.userconfcmd \ |
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422 | and self.userconfurl: |
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423 | cid, cert = self.export_userconf(project) |
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424 | state['userconfig'] = unicode(cid) |
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425 | return [{ |
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426 | 'id': id, |
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427 | 'name': 'userconfig', |
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428 | 'visibility': 'export', |
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429 | 'server': "%s/%s" % (self.userconfurl, str(cid)), |
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430 | 'fedAttr': [ |
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431 | { 'attribute': 'cert', 'value': cert }, |
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432 | ] |
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433 | }] |
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434 | else: |
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435 | return [ ] |
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436 | |
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437 | def export_hide_hosts(self, id, state, project, user, attrs): |
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438 | return [{ |
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439 | 'id': id, |
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440 | 'name': 'hide_hosts', |
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441 | 'visibility': 'export', |
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442 | 'fedAttr': [ x for x in attrs \ |
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443 | if x.get('attribute', "") == 'hosts'], |
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444 | }] |
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445 | |
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446 | def export_project_export(self, id, state, project, user, attrs): |
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447 | rv = [ ] |
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448 | rv.extend(self.export_SMB(id, state, project, user, attrs)) |
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449 | rv.extend(self.export_userconfig(id, state, project, user, attrs)) |
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450 | return rv |
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451 | |
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452 | def export_services(self, sreq, project=None, user=None): |
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453 | exp = [ ] |
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454 | state = { } |
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455 | for s in sreq: |
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456 | sname = s.get('name', '') |
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457 | svis = s.get('visibility', '') |
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458 | sattrs = s.get('fedAttr', []) |
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459 | if svis == 'export': |
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460 | if sname in self.exports: |
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461 | id = s.get('id', 'no_id') |
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462 | exp.extend(self.exports[sname](id, state, project, user, |
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463 | sattrs)) |
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464 | |
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465 | return (exp, state) |
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466 | |
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467 | def build_access_response(self, alloc_id, pname, services, proof): |
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468 | """ |
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469 | Create the SOAP response. |
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470 | |
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471 | Build the dictionary description of the response and use |
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472 | fedd_utils.pack_soap to create the soap message. ap is the allocate |
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473 | project message returned from a remote project allocation (even if that |
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474 | allocation was done locally). |
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475 | """ |
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476 | # Because alloc_id is already a fedd_services_types.IDType_Holder, |
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477 | # there's no need to repack it |
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478 | msg = { |
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479 | 'allocID': alloc_id, |
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480 | 'proof': proof.to_dict(), |
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481 | 'fedAttr': [ |
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482 | { 'attribute': 'domain', 'value': self.domain } , |
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483 | ] |
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484 | } |
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485 | |
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486 | if pname: |
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487 | msg['fedAttr'].append({ 'attribute': 'project', 'value': pname }) |
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488 | if self.dragon_endpoint: |
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489 | msg['fedAttr'].append({'attribute': 'dragon', |
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490 | 'value': self.dragon_endpoint}) |
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491 | if self.deter_internal: |
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492 | msg['fedAttr'].append({'attribute': 'deter_internal', |
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493 | 'value': self.deter_internal}) |
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494 | #XXX: ?? |
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495 | if self.dragon_vlans: |
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496 | msg['fedAttr'].append({'attribute': 'vlans', |
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497 | 'value': self.dragon_vlans}) |
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498 | |
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499 | if self.nat_portal is not None: |
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500 | msg['fedAttr'].append({'attribute': 'nat_portals', 'value': True}) |
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501 | |
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502 | if services: |
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503 | msg['service'] = services |
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504 | return msg |
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505 | |
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506 | def generate_portal_configs(self, topo, pubkey_base, secretkey_base, |
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507 | tmpdir, lproj, leid, connInfo, services): |
---|
508 | |
---|
509 | def conninfo_to_dict(key, info): |
---|
510 | """ |
---|
511 | Make a cpoy of the connection information about key, and flatten it |
---|
512 | into a single dict by parsing out any feddAttrs. |
---|
513 | """ |
---|
514 | |
---|
515 | rv = None |
---|
516 | for i in info: |
---|
517 | if key == i.get('portal', "") or \ |
---|
518 | key in [e.get('element', "") \ |
---|
519 | for e in i.get('member', [])]: |
---|
520 | rv = i.copy() |
---|
521 | break |
---|
522 | |
---|
523 | else: |
---|
524 | return rv |
---|
525 | |
---|
526 | if 'fedAttr' in rv: |
---|
527 | for a in rv['fedAttr']: |
---|
528 | attr = a.get('attribute', "") |
---|
529 | val = a.get('value', "") |
---|
530 | if attr and attr not in rv: |
---|
531 | rv[attr] = val |
---|
532 | del rv['fedAttr'] |
---|
533 | return rv |
---|
534 | |
---|
535 | # XXX: un hardcode this |
---|
536 | def client_null(f, s): |
---|
537 | print >>f, "Service: %s" % s['name'] |
---|
538 | |
---|
539 | def client_seer_master(f, s): |
---|
540 | print >>f, 'PortalAlias: seer-master' |
---|
541 | |
---|
542 | def client_smb(f, s): |
---|
543 | print >>f, "Service: %s" % s['name'] |
---|
544 | smbshare = None |
---|
545 | smbuser = None |
---|
546 | smbproj = None |
---|
547 | for a in s.get('fedAttr', []): |
---|
548 | if a.get('attribute', '') == 'SMBSHARE': |
---|
549 | smbshare = a.get('value', None) |
---|
550 | elif a.get('attribute', '') == 'SMBUSER': |
---|
551 | smbuser = a.get('value', None) |
---|
552 | elif a.get('attribute', '') == 'SMBPROJ': |
---|
553 | smbproj = a.get('value', None) |
---|
554 | |
---|
555 | if all((smbshare, smbuser, smbproj)): |
---|
556 | print >>f, "SMBshare: %s" % smbshare |
---|
557 | print >>f, "ProjectUser: %s" % smbuser |
---|
558 | print >>f, "ProjectName: %s" % smbproj |
---|
559 | |
---|
560 | def client_hide_hosts(f, s): |
---|
561 | for a in s.get('fedAttr', [ ]): |
---|
562 | if a.get('attribute', "") == 'hosts': |
---|
563 | print >>f, "Hide: %s" % a.get('value', "") |
---|
564 | |
---|
565 | client_service_out = { |
---|
566 | 'SMB': client_smb, |
---|
567 | 'tmcd': client_null, |
---|
568 | 'seer': client_null, |
---|
569 | 'userconfig': client_null, |
---|
570 | 'project_export': client_null, |
---|
571 | 'seer_master': client_seer_master, |
---|
572 | 'hide_hosts': client_hide_hosts, |
---|
573 | } |
---|
574 | |
---|
575 | def client_seer_master_export(f, s): |
---|
576 | print >>f, "AddedNode: seer-master" |
---|
577 | |
---|
578 | def client_seer_local_export(f, s): |
---|
579 | print >>f, "AddedNode: control" |
---|
580 | |
---|
581 | client_export_service_out = { |
---|
582 | 'seer_master': client_seer_master_export, |
---|
583 | 'local_seer_control': client_seer_local_export, |
---|
584 | } |
---|
585 | |
---|
586 | def server_port(f, s): |
---|
587 | p = urlparse(s.get('server', 'http://localhost')) |
---|
588 | print >>f, 'port: remote:%s:%s:%s' % (p.port, p.hostname, p.port) |
---|
589 | |
---|
590 | def server_null(f,s): pass |
---|
591 | |
---|
592 | def server_seer(f, s): |
---|
593 | print >>f, 'seer: True' |
---|
594 | |
---|
595 | server_service_out = { |
---|
596 | 'SMB': server_port, |
---|
597 | 'tmcd': server_port, |
---|
598 | 'userconfig': server_null, |
---|
599 | 'project_export': server_null, |
---|
600 | 'seer': server_seer, |
---|
601 | 'seer_master': server_port, |
---|
602 | 'hide_hosts': server_null, |
---|
603 | } |
---|
604 | # XXX: end un hardcode this |
---|
605 | |
---|
606 | |
---|
607 | seer_out = False |
---|
608 | client_out = False |
---|
609 | mproj = None |
---|
610 | mexp = None |
---|
611 | control_gw = None |
---|
612 | testbed = "" |
---|
613 | # Create configuration files for the portals |
---|
614 | for e in [ e for e in topo.elements \ |
---|
615 | if isinstance(e, topdl.Computer) and e.get_attribute('portal')]: |
---|
616 | myname = e.name |
---|
617 | type = e.get_attribute('portal_type') |
---|
618 | |
---|
619 | info = conninfo_to_dict(myname, connInfo) |
---|
620 | |
---|
621 | if not info: |
---|
622 | raise service_error(service_error.req, |
---|
623 | "No connectivity info for %s" % myname) |
---|
624 | |
---|
625 | peer = info.get('peer', "") |
---|
626 | ldomain = self.domain |
---|
627 | ssh_port = info.get('ssh_port', 22) |
---|
628 | |
---|
629 | # Collect this for the client.conf file |
---|
630 | if 'masterexperiment' in info: |
---|
631 | mproj, meid = info['masterexperiment'].split("/", 1) |
---|
632 | |
---|
633 | if type in ('control', 'both'): |
---|
634 | testbed = e.get_attribute('testbed') |
---|
635 | control_gw = myname |
---|
636 | |
---|
637 | active = info.get('active', 'False') |
---|
638 | nat_partner = info.get('nat_partner', 'False') |
---|
639 | |
---|
640 | cfn = "%s/%s.gw.conf" % (tmpdir, myname.lower()) |
---|
641 | tunnelconfig = self.tunnel_config |
---|
642 | try: |
---|
643 | f = open(cfn, "w") |
---|
644 | if active == 'True': |
---|
645 | print >>f, "active: True" |
---|
646 | print >>f, "ssh_port: %s" % ssh_port |
---|
647 | if type in ('control', 'both'): |
---|
648 | for s in [s for s in services \ |
---|
649 | if s.get('name', "") in self.imports]: |
---|
650 | server_service_out[s['name']](f, s) |
---|
651 | |
---|
652 | if nat_partner == 'True': |
---|
653 | print >>f, "nat_partner: True" |
---|
654 | |
---|
655 | if tunnelconfig: |
---|
656 | print >>f, "tunnelip: %s" % tunnelconfig |
---|
657 | print >>f, "peer: %s" % peer.lower() |
---|
658 | print >>f, "ssh_pubkey: /proj/%s/exp/%s/tmp/%s" % \ |
---|
659 | (lproj, leid, pubkey_base) |
---|
660 | print >>f, "ssh_privkey: /proj/%s/exp/%s/tmp/%s" % \ |
---|
661 | (lproj, leid, secretkey_base) |
---|
662 | f.close() |
---|
663 | except EnvironmentError, e: |
---|
664 | raise service_error(service_error.internal, |
---|
665 | "Can't write protal config %s: %s" % (cfn, e)) |
---|
666 | |
---|
667 | # Done with portals, write the client config file. |
---|
668 | try: |
---|
669 | f = open("%s/client.conf" % tmpdir, "w") |
---|
670 | if control_gw: |
---|
671 | print >>f, "ControlGateway: %s.%s.%s%s" % \ |
---|
672 | (myname.lower(), leid.lower(), lproj.lower(), |
---|
673 | ldomain.lower()) |
---|
674 | for s in services: |
---|
675 | if s.get('name',"") in self.imports and \ |
---|
676 | s.get('visibility','') == 'import': |
---|
677 | client_service_out[s['name']](f, s) |
---|
678 | if s.get('name', '') in self.exports and \ |
---|
679 | s.get('visibility', '') == 'export' and \ |
---|
680 | s['name'] in client_export_service_out: |
---|
681 | client_export_service_out[s['name']](f, s) |
---|
682 | # Seer uses this. |
---|
683 | if mproj and meid: |
---|
684 | print >>f, "ExperimentID: %s/%s" % (mproj, meid) |
---|
685 | f.close() |
---|
686 | except EnvironmentError, e: |
---|
687 | raise service_error(service_error.internal, |
---|
688 | "Cannot write client.conf: %s" %s) |
---|
689 | |
---|
690 | def configure_userconf(self, services, tmpdir): |
---|
691 | """ |
---|
692 | If the userconf service was imported, collect the configuration data. |
---|
693 | """ |
---|
694 | for s in services: |
---|
695 | s_name = s.get('name', '') |
---|
696 | s_vis = s.get('visibility','') |
---|
697 | if s_name == 'userconfig' and s_vis == 'import': |
---|
698 | # Collect ther server and certificate info. |
---|
699 | u = s.get('server', None) |
---|
700 | for a in s.get('fedAttr', []): |
---|
701 | if a.get('attribute',"") == 'cert': |
---|
702 | cert = a.get('value', None) |
---|
703 | break |
---|
704 | else: |
---|
705 | cert = None |
---|
706 | |
---|
707 | if cert: |
---|
708 | # Make a temporary certificate file for get_url. The |
---|
709 | # finally clause removes it whether something goes |
---|
710 | # wrong (including an exception from get_url) or not. |
---|
711 | try: |
---|
712 | tfos, tn = tempfile.mkstemp(suffix=".pem") |
---|
713 | tf = os.fdopen(tfos, 'w') |
---|
714 | print >>tf, cert |
---|
715 | tf.close() |
---|
716 | self.log.debug("Getting userconf info: %s" % u) |
---|
717 | get_url(u, tn, tmpdir, "userconf") |
---|
718 | self.log.debug("Got userconf info: %s" % u) |
---|
719 | except EnvironmentError, e: |
---|
720 | raise service_error(service.error.internal, |
---|
721 | "Cannot create temp file for " + |
---|
722 | "userconfig certificates: %s" % e) |
---|
723 | except: |
---|
724 | t, v, st = sys.exc_info() |
---|
725 | raise service_error(service_error.internal, |
---|
726 | "Error retrieving %s: %s" % (u, v)) |
---|
727 | finally: |
---|
728 | if tn: os.remove(tn) |
---|
729 | else: |
---|
730 | raise service_error(service_error.req, |
---|
731 | "No certificate for retreiving userconfig") |
---|
732 | break |
---|
733 | |
---|
734 | def import_store_info(self, cf, connInfo): |
---|
735 | """ |
---|
736 | Pull any import parameters in connInfo in. We translate them either |
---|
737 | into known member names or fedAddrs. |
---|
738 | """ |
---|
739 | |
---|
740 | for c in connInfo: |
---|
741 | for p in [ p for p in c.get('parameter', []) \ |
---|
742 | if p.get('type', '') == 'input']: |
---|
743 | name = p.get('name', None) |
---|
744 | key = p.get('key', None) |
---|
745 | store = p.get('store', None) |
---|
746 | |
---|
747 | if name and key and store : |
---|
748 | req = { 'name': key, 'wait': True } |
---|
749 | self.log.debug("Waiting for %s (%s) from %s" % \ |
---|
750 | (name, key, store)) |
---|
751 | r = self.call_GetValue(store, req, cf) |
---|
752 | r = r.get('GetValueResponseBody', None) |
---|
753 | if r : |
---|
754 | if r.get('name', '') == key: |
---|
755 | v = r.get('value', None) |
---|
756 | if v is not None: |
---|
757 | if name == 'peer': |
---|
758 | self.log.debug("Got peer %s" % v) |
---|
759 | c['peer'] = v |
---|
760 | else: |
---|
761 | self.log.debug("Got %s %s" % (name, v)) |
---|
762 | if c.has_key('fedAttr'): |
---|
763 | c['fedAttr'].append({ |
---|
764 | 'attribute': name, 'value': v}) |
---|
765 | else: |
---|
766 | c['fedAttr']= [{ |
---|
767 | 'attribute': name, 'value': v}] |
---|
768 | else: |
---|
769 | raise service_error(service_error.internal, |
---|
770 | 'None value exported for %s' % key) |
---|
771 | else: |
---|
772 | raise service_error(service_error.internal, |
---|
773 | 'Different name returned for %s: %s' \ |
---|
774 | % (key, r.get('name',''))) |
---|
775 | else: |
---|
776 | raise service_error(service_error.internal, |
---|
777 | 'Badly formatted response: no GetValueResponseBody') |
---|
778 | else: |
---|
779 | raise service_error(service_error.internal, |
---|
780 | 'Bad Services missing info for import %s' % c) |
---|
781 | |
---|
782 | def remove_dirs(self, dir): |
---|
783 | """ |
---|
784 | Remove the directory tree and all files rooted at dir. Log any errors, |
---|
785 | but continue. |
---|
786 | """ |
---|
787 | self.log.debug("[removedirs]: removing %s" % dir) |
---|
788 | try: |
---|
789 | for path, dirs, files in os.walk(dir, topdown=False): |
---|
790 | for f in files: |
---|
791 | os.remove(os.path.join(path, f)) |
---|
792 | for d in dirs: |
---|
793 | os.rmdir(os.path.join(path, d)) |
---|
794 | os.rmdir(dir) |
---|
795 | except EnvironmentError, e: |
---|
796 | self.log.error("Error deleting directory tree in %s" % e); |
---|
797 | |
---|
798 | def RequestAccess(self, req, fid): |
---|
799 | """ |
---|
800 | Handle an access request. Success here maps the requester into the |
---|
801 | local access control space and establishes state about that user keyed |
---|
802 | to a fedid. We also save a copy of the certificate underlying that |
---|
803 | fedid so this allocation can access configuration information and |
---|
804 | shared parameters on the experiment controller. |
---|
805 | """ |
---|
806 | |
---|
807 | self.log.info("RequestAccess called by %s" % fid) |
---|
808 | # The dance to get into the request body |
---|
809 | if req.has_key('RequestAccessRequestBody'): |
---|
810 | req = req['RequestAccessRequestBody'] |
---|
811 | else: |
---|
812 | raise service_error(service_error.req, "No request!?") |
---|
813 | |
---|
814 | # Base class lookup routine. If this fails, it throws a service |
---|
815 | # exception denying access that triggers a fault response back to the |
---|
816 | # caller. |
---|
817 | found, owners, proof = self.lookup_access(req, fid) |
---|
818 | self.log.info( |
---|
819 | "[RequestAccess] Access granted local creds %s" % found) |
---|
820 | # Make a fedid for this allocation |
---|
821 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
---|
822 | aid = unicode(allocID) |
---|
823 | |
---|
824 | # Store the data about this allocation: |
---|
825 | self.state_lock.acquire() |
---|
826 | self.state[aid] = { } |
---|
827 | self.state[aid]['user'] = found |
---|
828 | self.state[aid]['owners'] = owners |
---|
829 | self.state[aid]['auth'] = set() |
---|
830 | # Authorize the creating fedid and the principal representing the |
---|
831 | # allocation to manipulate it. |
---|
832 | self.append_allocation_authorization(aid, |
---|
833 | ((fid, allocID), (allocID, allocID))) |
---|
834 | self.write_state() |
---|
835 | self.state_lock.release() |
---|
836 | |
---|
837 | # Create a directory to stash the certificate in, ans stash it. |
---|
838 | try: |
---|
839 | f = open("%s/%s.pem" % (self.certdir, aid), "w") |
---|
840 | print >>f, alloc_cert |
---|
841 | f.close() |
---|
842 | except EnvironmentError, e: |
---|
843 | raise service_error(service_error.internal, |
---|
844 | "Can't open %s/%s : %s" % (self.certdir, aid, e)) |
---|
845 | self.log.debug('[RequestAccess] Returning allocation ID: %s' % allocID) |
---|
846 | return { 'allocID': { 'fedid': allocID }, 'proof': proof.to_dict() } |
---|
847 | |
---|
848 | def ReleaseAccess(self, req, fid): |
---|
849 | """ |
---|
850 | Release the allocation granted earlier. Access to the allocation is |
---|
851 | checked and if valid, the state and cached certificate are destroyed. |
---|
852 | """ |
---|
853 | self.log.info("ReleaseAccess called by %s" % fid) |
---|
854 | # The dance to get into the request body |
---|
855 | if req.has_key('ReleaseAccessRequestBody'): |
---|
856 | req = req['ReleaseAccessRequestBody'] |
---|
857 | else: |
---|
858 | raise service_error(service_error.req, "No request!?") |
---|
859 | |
---|
860 | # Pull a key out of the request. One can request to delete an |
---|
861 | # allocation by a local human readable name or by a fedid. This finds |
---|
862 | # both choices. |
---|
863 | try: |
---|
864 | if 'localname' in req['allocID']: |
---|
865 | auth_attr = aid = req['allocID']['localname'] |
---|
866 | elif 'fedid' in req['allocID']: |
---|
867 | aid = unicode(req['allocID']['fedid']) |
---|
868 | auth_attr = req['allocID']['fedid'] |
---|
869 | else: |
---|
870 | raise service_error(service_error.req, |
---|
871 | "Only localnames and fedids are understood") |
---|
872 | except KeyError: |
---|
873 | raise service_error(service_error.req, "Badly formed request") |
---|
874 | |
---|
875 | self.log.debug("[ReleaseAccess] deallocation requested for %s", aid) |
---|
876 | # Confirm access |
---|
877 | access_ok, proof = self.auth.check_attribute(fid, auth_attr, |
---|
878 | with_proof=True) |
---|
879 | if not access_ok: |
---|
880 | self.log.debug("[ReleaseAccess] deallocation denied for %s", aid) |
---|
881 | raise service_error(service_error.access, "Access Denied", |
---|
882 | proof=proof) |
---|
883 | |
---|
884 | # If there is an allocation in the state, delete it. Note the locking. |
---|
885 | self.state_lock.acquire() |
---|
886 | if aid in self.state: |
---|
887 | self.log.debug("[ReleaseAccess] Found allocation for %s" %aid) |
---|
888 | self.clear_allocation_authorization(aid) |
---|
889 | del self.state[aid] |
---|
890 | self.write_state() |
---|
891 | self.state_lock.release() |
---|
892 | # And remove the access cert |
---|
893 | cf = "%s/%s.pem" % (self.certdir, aid) |
---|
894 | self.log.debug("[ReleaseAccess] Removing %s" % cf) |
---|
895 | os.remove(cf) |
---|
896 | self.log.info("ReleaseAccess succeeded for %s" % fid) |
---|
897 | return { 'allocID': req['allocID'], 'proof': proof.to_dict() } |
---|
898 | else: |
---|
899 | self.state_lock.release() |
---|
900 | raise service_error(service_error.req, "No such allocation") |
---|