[175b444] | 1 | #!/usr/local/bin/python |
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| 2 | |
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| 3 | import os,sys |
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| 4 | import re |
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| 5 | import string |
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| 6 | import copy |
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| 7 | import pickle |
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| 8 | import logging |
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| 9 | import time |
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| 10 | |
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| 11 | from threading import Thread, Lock |
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| 12 | from subprocess import Popen, call, PIPE, STDOUT |
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| 13 | |
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| 14 | from util import * |
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| 15 | from allocate_project import allocate_project_local, allocate_project_remote |
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| 16 | from access_project import access_project |
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| 17 | from fedid import fedid, generate_fedid |
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| 18 | from authorizer import authorizer |
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| 19 | from service_error import service_error |
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| 20 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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| 21 | |
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| 22 | import httplib |
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| 23 | import tempfile |
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| 24 | from urlparse import urlparse |
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| 25 | |
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| 26 | import topdl |
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| 27 | import list_log |
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| 28 | import proxy_emulab_segment |
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| 29 | import local_emulab_segment |
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| 30 | |
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| 31 | |
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| 32 | # Make log messages disappear if noone configures a fedd logger |
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| 33 | class nullHandler(logging.Handler): |
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| 34 | def emit(self, record): pass |
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| 35 | |
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| 36 | fl = logging.getLogger("fedd.access") |
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| 37 | fl.addHandler(nullHandler()) |
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| 38 | |
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| 39 | class access: |
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| 40 | class parse_error(RuntimeError): pass |
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| 41 | |
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| 42 | |
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| 43 | proxy_RequestAccess= service_caller('RequestAccess') |
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| 44 | proxy_ReleaseAccess= service_caller('ReleaseAccess') |
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| 45 | |
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| 46 | @staticmethod |
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| 47 | def parse_vlans(v, log=None): |
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| 48 | """ |
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| 49 | Parse a vlan parameter into a set of vlan ids. Comma separated |
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| 50 | sequences of vlan ranges are acceptable. |
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| 51 | """ |
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| 52 | # the vlans can be a single integer, a comma separated list or a |
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| 53 | # comma separated lists of dashed ranges. E.g 100 or 100,300 or |
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| 54 | # 100,300-305,400 |
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| 55 | vset = set() |
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| 56 | if v: |
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| 57 | for v in [ x.strip() for x in v.split(",") ]: |
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| 58 | try: |
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| 59 | if v.count("-") == 1: |
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| 60 | f, t = v.split("-", 1) |
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| 61 | for i in range(int(f), int(t)+1): |
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| 62 | vset.add(i) |
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| 63 | else: |
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| 64 | vset.add(int(v)) |
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| 65 | except ValueError: |
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| 66 | if log: |
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| 67 | log.warn("Invalid expression in vlan list: %s" % v) |
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| 68 | return vset |
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| 69 | |
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| 70 | def __init__(self, config=None, auth=None): |
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| 71 | """ |
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| 72 | Initializer. Pulls parameters out of the ConfigParser's access section. |
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| 73 | """ |
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| 74 | |
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| 75 | # Make sure that the configuration is in place |
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| 76 | if not config: |
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| 77 | raise RunTimeError("No config to dragon_access.access") |
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| 78 | |
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| 79 | self.allow_proxy = False |
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| 80 | self.project_priority = config.getboolean("access", "project_priority") |
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| 81 | self.certdir = config.get("access","certdir") |
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| 82 | self.create_debug = config.getboolean("access", "create_debug") |
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| 83 | self.domain = config.get("access", "domain") |
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| 84 | vlan_str = config.get("access", "vlans") |
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| 85 | self.vlans = self.parse_vlans(vlan_str) |
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| 86 | |
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| 87 | self.attrs = { } |
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| 88 | self.access = { } |
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| 89 | # State is a dict of dicts indexed by segment fedid that includes the |
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| 90 | # owners of the segment as fedids (who can manipulate it, key: owners), |
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| 91 | # the repo dir/user for the allocation (key: user), Current allocation |
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| 92 | # log (key: log), and GRI of the reservation once made (key: gri) |
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| 93 | self.state = { } |
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| 94 | self.log = logging.getLogger("fedd.access") |
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| 95 | set_log_level(config, "access", self.log) |
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| 96 | self.state_lock = Lock() |
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| 97 | |
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| 98 | if auth: self.auth = auth |
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| 99 | else: |
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| 100 | self.log.error(\ |
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| 101 | "[access]: No authorizer initialized, creating local one.") |
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| 102 | auth = authorizer() |
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| 103 | |
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| 104 | tb = config.get('access', 'testbed') |
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| 105 | if tb: self.testbed = [ t.strip() for t in tb.split(',') ] |
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| 106 | else: self.testbed = [ ] |
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| 107 | |
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| 108 | if config.has_option("access", "accessdb"): |
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| 109 | self.read_access(config.get("access", "accessdb")) |
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| 110 | |
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| 111 | self.state_filename = config.get("access", "access_state") |
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| 112 | self.read_state() |
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| 113 | |
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| 114 | # Keep cert_file and cert_pwd coming from the same place |
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| 115 | self.cert_file = config.get("access", "cert_file") |
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| 116 | if self.cert_file: |
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| 117 | self.sert_pwd = config.get("access", "cert_pw") |
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| 118 | else: |
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| 119 | self.cert_file = config.get("globals", "cert_file") |
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| 120 | self.sert_pwd = config.get("globals", "cert_pw") |
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| 121 | |
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| 122 | self.trusted_certs = config.get("access", "trusted_certs") or \ |
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| 123 | config.get("globals", "trusted_certs") |
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| 124 | |
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| 125 | self.call_GetValue= service_caller('GetValue') |
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| 126 | self.call_SetValue= service_caller('SetValue') |
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| 127 | |
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| 128 | self.soap_services = {\ |
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| 129 | 'RequestAccess': soap_handler("RequestAccess", self.RequestAccess), |
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| 130 | 'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess), |
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| 131 | 'StartSegment': soap_handler("StartSegment", self.StartSegment), |
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| 132 | 'TerminateSegment': soap_handler("TerminateSegment", |
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| 133 | self.TerminateSegment), |
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| 134 | } |
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| 135 | self.xmlrpc_services = {\ |
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| 136 | 'RequestAccess': xmlrpc_handler('RequestAccess', |
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| 137 | self.RequestAccess), |
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| 138 | 'ReleaseAccess': xmlrpc_handler('ReleaseAccess', |
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| 139 | self.ReleaseAccess), |
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| 140 | 'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment), |
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| 141 | 'TerminateSegment': xmlrpc_handler('TerminateSegment', |
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| 142 | self.TerminateSegment), |
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| 143 | } |
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| 144 | |
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| 145 | def read_access(self, config): |
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| 146 | """ |
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| 147 | Read a configuration file and set internal parameters. |
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| 148 | |
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| 149 | There are access lines of the |
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| 150 | form (tb, proj, user) -> user that map the first tuple of |
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| 151 | names to the user for for access purposes. Names in the key (left side) |
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| 152 | can include "<NONE> or <ANY>" to act as wildcards or to require the |
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| 153 | fields to be empty. Similarly aproj or auser can be <SAME> or |
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| 154 | <DYNAMIC> indicating that either the matching key is to be used or a |
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| 155 | dynamic user or project will be created. These names can also be |
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| 156 | federated IDs (fedid's) if prefixed with fedid:. The user is the repo |
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| 157 | directory that contains the DRAGON user credentials. |
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| 158 | Testbed attributes outside the forms above can be given using the |
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| 159 | format attribute: name value: value. The name is a single word and the |
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| 160 | value continues to the end of the line. Empty lines and lines startin |
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| 161 | with a # are ignored. |
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| 162 | |
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| 163 | Parsing errors result in a self.parse_error exception being raised. |
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| 164 | """ |
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| 165 | lineno=0 |
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| 166 | name_expr = "["+string.ascii_letters + string.digits + "\.\-_]+" |
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| 167 | fedid_expr = "fedid:[" + string.hexdigits + "]+" |
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| 168 | key_name = "(<ANY>|<NONE>|"+fedid_expr + "|"+ name_expr + ")" |
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| 169 | |
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| 170 | attr_re = re.compile('attribute:\s*([\._\-a-z0-9]+)\s+value:\s*(.*)', |
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| 171 | re.IGNORECASE) |
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| 172 | access_re = re.compile('\('+key_name+'\s*,\s*'+key_name+'\s*,\s*'+ |
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| 173 | key_name+'\s*\)\s*->\s*\(('+name_expr +')\s*\)', re.IGNORECASE) |
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| 174 | |
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| 175 | def parse_name(n): |
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| 176 | if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):]) |
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| 177 | else: return n |
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| 178 | |
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| 179 | def auth_name(n): |
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| 180 | if isinstance(n, basestring): |
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| 181 | if n =='<any>' or n =='<none>': return None |
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| 182 | else: return unicode(n) |
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| 183 | else: |
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| 184 | return n |
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| 185 | |
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| 186 | f = open(config, "r"); |
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| 187 | for line in f: |
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| 188 | lineno += 1 |
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| 189 | line = line.strip(); |
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| 190 | if len(line) == 0 or line.startswith('#'): |
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| 191 | continue |
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| 192 | |
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| 193 | # Extended (attribute: x value: y) attribute line |
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| 194 | m = attr_re.match(line) |
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| 195 | if m != None: |
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| 196 | attr, val = m.group(1,2) |
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| 197 | self.attrs[attr] = val |
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| 198 | continue |
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| 199 | |
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| 200 | # Access line (t, p, u) -> (a) line |
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| 201 | m = access_re.match(line) |
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| 202 | if m != None: |
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| 203 | access_key = tuple([ parse_name(x) for x in m.group(1,2,3)]) |
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| 204 | auth_key = tuple([ auth_name(x) for x in access_key]) |
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| 205 | user_name = auth_name(parse_name(m.group(4))) |
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| 206 | |
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| 207 | self.access[access_key] = user_name |
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| 208 | self.auth.set_attribute(auth_key, "access") |
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| 209 | continue |
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| 210 | |
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| 211 | # Nothing matched to here: unknown line - raise exception |
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| 212 | f.close() |
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| 213 | raise self.parse_error("Unknown statement at line %d of %s" % \ |
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| 214 | (lineno, config)) |
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| 215 | f.close() |
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| 216 | |
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| 217 | def write_state(self): |
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| 218 | if self.state_filename: |
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| 219 | try: |
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| 220 | f = open(self.state_filename, 'w') |
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| 221 | pickle.dump(self.state, f) |
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[d3c8759] | 222 | except EnvironmentError, e: |
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[175b444] | 223 | self.log.error("Can't write file %s: %s" % \ |
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| 224 | (self.state_filename, e)) |
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| 225 | except pickle.PicklingError, e: |
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| 226 | self.log.error("Pickling problem: %s" % e) |
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| 227 | except TypeError, e: |
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| 228 | self.log.error("Pickling problem (TypeError): %s" % e) |
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| 229 | |
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| 230 | |
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| 231 | def read_state(self): |
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| 232 | """ |
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| 233 | Read a new copy of access state. Old state is overwritten. |
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| 234 | |
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| 235 | State format is a simple pickling of the state dictionary. |
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| 236 | """ |
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| 237 | if self.state_filename: |
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| 238 | try: |
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| 239 | f = open(self.state_filename, "r") |
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| 240 | self.state = pickle.load(f) |
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| 241 | self.log.debug("[read_state]: Read state from %s" % \ |
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| 242 | self.state_filename) |
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[d3c8759] | 243 | except EnvironmentError, e: |
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[175b444] | 244 | self.log.warning(("[read_state]: No saved state: " +\ |
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| 245 | "Can't open %s: %s") % (self.state_filename, e)) |
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| 246 | except EOFError, e: |
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| 247 | self.log.warning(("[read_state]: " +\ |
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| 248 | "Empty or damaged state file: %s:") % \ |
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| 249 | self.state_filename) |
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| 250 | except pickle.UnpicklingError, e: |
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| 251 | self.log.warning(("[read_state]: No saved state: " + \ |
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| 252 | "Unpickling failed: %s") % e) |
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| 253 | |
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| 254 | # Add the ownership attributes to the authorizer. Note that the |
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| 255 | # indices of the allocation dict are strings, but the attributes are |
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| 256 | # fedids, so there is a conversion. |
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| 257 | for k in self.state.keys(): |
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| 258 | for o in self.state[k].get('owners', []): |
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| 259 | self.auth.set_attribute(o, fedid(hexstr=k)) |
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| 260 | self.auth.set_attribute(fedid(hexstr=k),fedid(hexstr=k)) |
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| 261 | # If the allocation has a vlan assigned, remove it from the |
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| 262 | # available vlans |
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| 263 | v = self.state[k].get('vlan', None) |
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| 264 | if v: |
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| 265 | self.vlans.discard(v) |
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| 266 | |
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| 267 | |
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| 268 | |
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| 269 | def permute_wildcards(self, a, p): |
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| 270 | """Return a copy of a with various fields wildcarded. |
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| 271 | |
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| 272 | The bits of p control the wildcards. A set bit is a wildcard |
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| 273 | replacement with the lowest bit being user then project then testbed. |
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| 274 | """ |
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| 275 | if p & 1: user = ["<any>"] |
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| 276 | else: user = a[2] |
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| 277 | if p & 2: proj = "<any>" |
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| 278 | else: proj = a[1] |
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| 279 | if p & 4: tb = "<any>" |
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| 280 | else: tb = a[0] |
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| 281 | |
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| 282 | return (tb, proj, user) |
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| 283 | |
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| 284 | def find_access(self, search): |
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| 285 | """ |
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| 286 | Search the access DB for a match on this tuple. Return the matching |
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| 287 | user (repo dir). |
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| 288 | |
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| 289 | NB, if the initial tuple fails to match we start inserting wildcards in |
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| 290 | an order determined by self.project_priority. Try the list of users in |
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| 291 | order (when wildcarded, there's only one user in the list). |
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| 292 | """ |
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| 293 | if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7) |
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| 294 | else: perm = (0, 2, 1, 3, 4, 6, 5, 7) |
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| 295 | |
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| 296 | for p in perm: |
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| 297 | s = self.permute_wildcards(search, p) |
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| 298 | # s[2] is None on an anonymous, unwildcarded request |
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| 299 | if s[2] != None: |
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| 300 | for u in s[2]: |
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| 301 | if self.access.has_key((s[0], s[1], u)): |
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| 302 | return self.access[(s[0], s[1], u)] |
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| 303 | else: |
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| 304 | if self.access.has_key(s): |
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| 305 | return self.access[s] |
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| 306 | return None |
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| 307 | |
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| 308 | def lookup_access(self, req, fid): |
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| 309 | """ |
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| 310 | Determine the allowed access for this request. Return the access and |
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| 311 | which fields are dynamic. |
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| 312 | |
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| 313 | The fedid is needed to construct the request |
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| 314 | """ |
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| 315 | # Search keys |
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| 316 | tb = None |
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| 317 | project = None |
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| 318 | user = None |
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| 319 | # Return values |
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| 320 | rp = access_project(None, ()) |
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| 321 | ru = None |
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| 322 | user_re = re.compile("user:\s(.*)") |
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| 323 | project_re = re.compile("project:\s(.*)") |
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| 324 | |
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| 325 | user = [ user_re.findall(x)[0] for x in req.get('credential', []) \ |
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| 326 | if user_re.match(x)] |
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| 327 | project = [ project_re.findall(x)[0] \ |
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| 328 | for x in req.get('credential', []) \ |
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| 329 | if project_re.match(x)] |
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| 330 | |
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| 331 | if len(project) == 1: project = project[0] |
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| 332 | elif len(project) == 0: project = None |
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| 333 | else: |
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| 334 | raise service_error(service_error.req, |
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| 335 | "More than one project credential") |
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| 336 | |
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| 337 | |
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| 338 | user_fedids = [ u for u in user if isinstance(u, fedid)] |
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| 339 | |
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| 340 | # Determine how the caller is representing itself. If its fedid shows |
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| 341 | # up as a project or a singleton user, let that stand. If neither the |
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| 342 | # usernames nor the project name is a fedid, the caller is a testbed. |
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| 343 | if project and isinstance(project, fedid): |
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| 344 | if project == fid: |
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| 345 | # The caller is the project (which is already in the tuple |
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| 346 | # passed in to the authorizer) |
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| 347 | owners = user_fedids |
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| 348 | owners.append(project) |
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| 349 | else: |
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| 350 | raise service_error(service_error.req, |
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| 351 | "Project asserting different fedid") |
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| 352 | else: |
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| 353 | if fid not in user_fedids: |
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| 354 | tb = fid |
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| 355 | owners = user_fedids |
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| 356 | owners.append(fid) |
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| 357 | else: |
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| 358 | if len(fedids) > 1: |
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| 359 | raise service_error(service_error.req, |
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| 360 | "User asserting different fedid") |
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| 361 | else: |
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| 362 | # Which is a singleton |
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| 363 | owners = user_fedids |
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| 364 | # Confirm authorization |
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| 365 | |
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| 366 | for u in user: |
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| 367 | self.log.debug("[lookup_access] Checking access for %s" % \ |
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| 368 | ((tb, project, u),)) |
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| 369 | if self.auth.check_attribute((tb, project, u), 'access'): |
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| 370 | self.log.debug("[lookup_access] Access granted") |
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| 371 | break |
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| 372 | else: |
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| 373 | self.log.debug("[lookup_access] Access Denied") |
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| 374 | else: |
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| 375 | raise service_error(service_error.access, "Access denied") |
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| 376 | |
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| 377 | # This maps a valid user to the Emulab projects and users to use |
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| 378 | found = self.find_access((tb, project, user)) |
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| 379 | |
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| 380 | if found == None: |
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| 381 | raise service_error(service_error.access, |
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| 382 | "Access denied - cannot map access") |
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| 383 | return found, owners |
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| 384 | |
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| 385 | def RequestAccess(self, req, fid): |
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| 386 | """ |
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| 387 | Handle the access request. Proxy if not for us. |
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| 388 | |
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| 389 | Parse out the fields and make the allocations or rejections if for us, |
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| 390 | otherwise, assuming we're willing to proxy, proxy the request out. |
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| 391 | """ |
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| 392 | |
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| 393 | # The dance to get into the request body |
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| 394 | if req.has_key('RequestAccessRequestBody'): |
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| 395 | req = req['RequestAccessRequestBody'] |
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| 396 | else: |
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| 397 | raise service_error(service_error.req, "No request!?") |
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| 398 | |
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| 399 | if req.has_key('destinationTestbed'): |
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| 400 | dt = unpack_id(req['destinationTestbed']) |
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| 401 | |
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| 402 | if dt == None or dt in self.testbed: |
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| 403 | # Request for this fedd |
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| 404 | found, owners = self.lookup_access(req, fid) |
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| 405 | # keep track of what's been added |
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| 406 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
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| 407 | aid = unicode(allocID) |
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| 408 | |
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| 409 | self.state_lock.acquire() |
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| 410 | self.state[aid] = { } |
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| 411 | self.state[aid]['user'] = found |
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| 412 | self.state[aid]['owners'] = owners |
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| 413 | self.state[aid]['vlan'] = None |
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| 414 | self.write_state() |
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| 415 | self.state_lock.release() |
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| 416 | for o in owners: |
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| 417 | self.auth.set_attribute(o, allocID) |
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| 418 | self.auth.set_attribute(allocID, allocID) |
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| 419 | |
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| 420 | try: |
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| 421 | f = open("%s/%s.pem" % (self.certdir, aid), "w") |
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| 422 | print >>f, alloc_cert |
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| 423 | f.close() |
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[d3c8759] | 424 | except EnvironmentError, e: |
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[175b444] | 425 | raise service_error(service_error.internal, |
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| 426 | "Can't open %s/%s : %s" % (self.certdir, aid, e)) |
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| 427 | return { 'allocID': { 'fedid': allocID } } |
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| 428 | else: |
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| 429 | if self.allow_proxy: |
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| 430 | resp = self.proxy_RequestAccess.call_service(dt, req, |
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| 431 | self.cert_file, self.cert_pwd, |
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| 432 | self.trusted_certs) |
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| 433 | if resp.has_key('RequestAccessResponseBody'): |
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| 434 | return resp['RequestAccessResponseBody'] |
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| 435 | else: |
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| 436 | return None |
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| 437 | else: |
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| 438 | raise service_error(service_error.access, |
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| 439 | "Access proxying denied") |
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| 440 | |
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| 441 | def ReleaseAccess(self, req, fid): |
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| 442 | # The dance to get into the request body |
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| 443 | if req.has_key('ReleaseAccessRequestBody'): |
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| 444 | req = req['ReleaseAccessRequestBody'] |
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| 445 | else: |
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| 446 | raise service_error(service_error.req, "No request!?") |
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| 447 | |
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| 448 | if req.has_key('destinationTestbed'): |
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| 449 | dt = unpack_id(req['destinationTestbed']) |
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| 450 | else: |
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| 451 | dt = None |
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| 452 | |
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| 453 | if dt == None or dt in self.testbed: |
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| 454 | # Local request |
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| 455 | try: |
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| 456 | if req['allocID'].has_key('localname'): |
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| 457 | auth_attr = aid = req['allocID']['localname'] |
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| 458 | elif req['allocID'].has_key('fedid'): |
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| 459 | aid = unicode(req['allocID']['fedid']) |
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| 460 | auth_attr = req['allocID']['fedid'] |
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| 461 | else: |
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| 462 | raise service_error(service_error.req, |
---|
| 463 | "Only localnames and fedids are understood") |
---|
| 464 | except KeyError: |
---|
| 465 | raise service_error(service_error.req, "Badly formed request") |
---|
| 466 | |
---|
| 467 | self.log.debug("[access] deallocation requested for %s", aid) |
---|
| 468 | if not self.auth.check_attribute(fid, auth_attr): |
---|
| 469 | self.log.debug("[access] deallocation denied for %s", aid) |
---|
| 470 | raise service_error(service_error.access, "Access Denied") |
---|
| 471 | |
---|
| 472 | self.state_lock.acquire() |
---|
| 473 | if self.state.has_key(aid): |
---|
| 474 | self.log.debug("Found allocation for %s" %aid) |
---|
| 475 | del self.state[aid] |
---|
| 476 | self.write_state() |
---|
| 477 | self.state_lock.release() |
---|
| 478 | # And remove the access cert |
---|
| 479 | cf = "%s/%s.pem" % (self.certdir, aid) |
---|
| 480 | self.log.debug("Removing %s" % cf) |
---|
| 481 | os.remove(cf) |
---|
| 482 | return { 'allocID': req['allocID'] } |
---|
| 483 | else: |
---|
| 484 | self.state_lock.release() |
---|
| 485 | raise service_error(service_error.req, "No such allocation") |
---|
| 486 | |
---|
| 487 | else: |
---|
| 488 | if self.allow_proxy: |
---|
| 489 | resp = self.proxy_ReleaseAccess.call_service(dt, req, |
---|
| 490 | self.cert_file, self.cert_pwd, |
---|
| 491 | self.trusted_certs) |
---|
| 492 | if resp.has_key('ReleaseAccessResponseBody'): |
---|
| 493 | return resp['ReleaseAccessResponseBody'] |
---|
| 494 | else: |
---|
| 495 | return None |
---|
| 496 | else: |
---|
| 497 | raise service_error(service_error.access, |
---|
| 498 | "Access proxying denied") |
---|
| 499 | |
---|
| 500 | def extract_parameters(self, top): |
---|
| 501 | """ |
---|
| 502 | DRAGON currently supports a fixed capacity link between two endpoints. |
---|
| 503 | Those endpoints may specify a VPN (or list or range) to use. This |
---|
| 504 | extracts the DRAGON endpoints and vpn preferences from the segments (as |
---|
| 505 | attributes) and the capacity of the connection as given by the |
---|
| 506 | substrate. The two endpoints VLAN choices are intersected to get set |
---|
| 507 | of VLANs that are acceptable (no VLAN requiremnets means any is |
---|
| 508 | acceptable). |
---|
| 509 | """ |
---|
| 510 | segments = filter(lambda x: isinstance(x, topdl.Segment), top.elements) |
---|
| 511 | |
---|
| 512 | if len(segments) != 2 or len(top.substrates) != 1: |
---|
| 513 | raise service_error(service_error.req, |
---|
| 514 | "Requests to DRAGON must have exactlty two segments " +\ |
---|
| 515 | "and one substrate") |
---|
| 516 | |
---|
| 517 | vlans = set() |
---|
| 518 | for s in segments: |
---|
| 519 | v = s.get_attribute('vlans') |
---|
| 520 | vlans &= self.parse_vlans(v) |
---|
| 521 | |
---|
| 522 | if len(vlans) == 0: |
---|
| 523 | vlans = None |
---|
| 524 | |
---|
| 525 | sub = top.substrates[0] |
---|
| 526 | if sub.capacity: |
---|
| 527 | cap = int(sub.capacity.rate / 1000.0) |
---|
| 528 | if cap < 1: cap = 1 |
---|
| 529 | else: |
---|
| 530 | cap = 100 |
---|
| 531 | |
---|
| 532 | return cap, vlans |
---|
| 533 | |
---|
| 534 | def export_store_info(self, cf, vlan, connInfo): |
---|
| 535 | """ |
---|
| 536 | For the export requests in the connection info, install the peer names |
---|
| 537 | at the experiment controller via SetValue calls. |
---|
| 538 | """ |
---|
| 539 | |
---|
| 540 | for c in connInfo: |
---|
| 541 | for p in [ p for p in c.get('parameter', []) \ |
---|
| 542 | if p.get('type', '') == 'output']: |
---|
| 543 | |
---|
| 544 | if p.get('name', '') != 'vlan_id': |
---|
| 545 | self.log.error("Unknown export parameter: %s" % \ |
---|
| 546 | p.get('name')) |
---|
| 547 | continue |
---|
| 548 | |
---|
| 549 | k = p.get('key', None) |
---|
| 550 | surl = p.get('store', None) |
---|
| 551 | if surl and k: |
---|
| 552 | value = "%s" % vlan |
---|
| 553 | req = { 'name': k, 'value': value } |
---|
| 554 | self.call_SetValue(surl, req, cf) |
---|
| 555 | else: |
---|
| 556 | self.log.error("Bad export request: %s" % p) |
---|
| 557 | |
---|
| 558 | def import_store_info(self, cf, connInfo): |
---|
| 559 | """ |
---|
| 560 | Pull any import parameters in connInfo in. We translate them either |
---|
| 561 | into known member names or fedAddrs. |
---|
| 562 | """ |
---|
| 563 | |
---|
| 564 | for c in connInfo: |
---|
| 565 | for p in [ p for p in c.get('parameter', []) \ |
---|
| 566 | if p.get('type', '') == 'input']: |
---|
| 567 | name = p.get('name', None) |
---|
| 568 | key = p.get('key', None) |
---|
| 569 | store = p.get('store', None) |
---|
| 570 | |
---|
| 571 | if name and key and store : |
---|
| 572 | req = { 'name': key, 'wait': True } |
---|
| 573 | r = self.call_GetValue(store, req, cf) |
---|
| 574 | r = r.get('GetValueResponseBody', None) |
---|
| 575 | if r : |
---|
| 576 | if r.get('name', '') == key: |
---|
| 577 | v = r.get('value', None) |
---|
| 578 | if v is not None: |
---|
| 579 | if name == 'peer': |
---|
| 580 | c['peer'] = v |
---|
| 581 | else: |
---|
| 582 | if c.has_key('fedAttr'): |
---|
| 583 | c['fedAttr'].append({ |
---|
| 584 | 'attribute': name, 'value': value}) |
---|
| 585 | else: |
---|
| 586 | c['fedAttr']= [{ |
---|
| 587 | 'attribute': name, 'value': value}] |
---|
| 588 | else: |
---|
| 589 | raise service_error(service_error.internal, |
---|
| 590 | 'None value exported for %s' % key) |
---|
| 591 | else: |
---|
| 592 | raise service_error(service_error.internal, |
---|
| 593 | 'Different name returned for %s: %s' \ |
---|
| 594 | % (key, r.get('name',''))) |
---|
| 595 | else: |
---|
| 596 | raise service_error(service_error.internal, |
---|
| 597 | 'Badly formatted response: no GetValueResponseBody') |
---|
| 598 | else: |
---|
| 599 | raise service_error(service_error.internal, |
---|
| 600 | 'Bad Services missing info for import %s' % c) |
---|
| 601 | |
---|
| 602 | |
---|
| 603 | def StartSegment(self, req, fid): |
---|
| 604 | err = None # Any service_error generated after tmpdir is created |
---|
| 605 | rv = None # Return value from segment creation |
---|
| 606 | |
---|
| 607 | try: |
---|
| 608 | req = req['StartSegmentRequestBody'] |
---|
| 609 | except KeyError: |
---|
| 610 | raise service_error(server_error.req, "Badly formed request") |
---|
| 611 | |
---|
| 612 | auth_attr = req['allocID']['fedid'] |
---|
| 613 | aid = "%s" % auth_attr |
---|
| 614 | attrs = req.get('fedAttr', []) |
---|
| 615 | if not self.auth.check_attribute(fid, auth_attr): |
---|
| 616 | raise service_error(service_error.access, "Access denied") |
---|
| 617 | else: |
---|
| 618 | # See if this is a replay of an earlier succeeded StartSegment - |
---|
| 619 | # sometimes SSL kills 'em. If so, replay the response rather than |
---|
| 620 | # redoing the allocation. |
---|
| 621 | self.state_lock.acquire() |
---|
| 622 | retval = self.state[aid].get('started', None) |
---|
| 623 | self.state_lock.release() |
---|
| 624 | if retval: |
---|
| 625 | self.log.warning("Duplicate StartSegment for %s: " % aid + \ |
---|
| 626 | "replaying response") |
---|
| 627 | return retval |
---|
| 628 | |
---|
| 629 | certfile = "%s/%s.pem" % (self.certdir, aid) |
---|
| 630 | |
---|
| 631 | if req.has_key('segmentdescription') and \ |
---|
| 632 | req['segmentdescription'].has_key('topdldescription'): |
---|
| 633 | topo = \ |
---|
| 634 | topdl.Topology(**req['segmentdescription']['topdldescription']) |
---|
| 635 | else: |
---|
| 636 | raise service_error(service_error.req, |
---|
| 637 | "Request missing segmentdescription'") |
---|
| 638 | |
---|
| 639 | connInfo = req.get('connection', []) |
---|
| 640 | |
---|
| 641 | cap, vlans = self.extract_parameters(topo) |
---|
| 642 | |
---|
| 643 | # No vlans passes in, consider any vlan acceptable |
---|
| 644 | if not vlans: |
---|
| 645 | vlans = self.vlans |
---|
| 646 | |
---|
| 647 | avail = self.vlans | vlans |
---|
| 648 | |
---|
| 649 | if len(avail) != 0: |
---|
| 650 | vlan_no = avail.pop() |
---|
| 651 | self.vlans.discard(vlan_no) |
---|
| 652 | else: |
---|
| 653 | raise service_error(service_error.federant, "No vlan available") |
---|
| 654 | |
---|
| 655 | self.export_store_info(certfile, vlan_no, connInfo) |
---|
| 656 | |
---|
| 657 | |
---|
| 658 | rtopo = topo.clone() |
---|
| 659 | for s in rtopo.substrates: |
---|
| 660 | s.set_attribute('vlan', vlan_no) |
---|
| 661 | |
---|
| 662 | # Grab the log (this is some anal locking, but better safe than |
---|
| 663 | # sorry) |
---|
| 664 | self.state_lock.acquire() |
---|
| 665 | self.state[aid]['vlan'] = vlan_no |
---|
| 666 | logv = "Allocated vlan: %d" % vlan_no |
---|
| 667 | # It's possible that the StartSegment call gets retried (!). |
---|
| 668 | # if the 'started' key is in the allocation, we'll return it rather |
---|
| 669 | # than redo the setup. |
---|
| 670 | self.state[aid]['started'] = { |
---|
| 671 | 'allocID': req['allocID'], |
---|
| 672 | 'allocationLog': logv, |
---|
[f038da1] | 673 | 'segmentdescription': { 'topdldescription': topo.to_dict() } |
---|
[175b444] | 674 | } |
---|
[8dbbdc5] | 675 | retval = copy.deepcopy(self.state[aid]['started']) |
---|
[175b444] | 676 | self.write_state() |
---|
| 677 | self.state_lock.release() |
---|
| 678 | |
---|
| 679 | return retval |
---|
| 680 | |
---|
| 681 | def TerminateSegment(self, req, fid): |
---|
| 682 | try: |
---|
| 683 | req = req['TerminateSegmentRequestBody'] |
---|
| 684 | except KeyError: |
---|
| 685 | raise service_error(server_error.req, "Badly formed request") |
---|
| 686 | |
---|
| 687 | auth_attr = req['allocID']['fedid'] |
---|
| 688 | aid = "%s" % auth_attr |
---|
| 689 | |
---|
| 690 | self.log.debug("Terminate request for %s" %aid) |
---|
| 691 | if not self.auth.check_attribute(fid, auth_attr): |
---|
| 692 | raise service_error(service_error.access, "Access denied") |
---|
| 693 | |
---|
| 694 | self.state_lock.acquire() |
---|
| 695 | if self.state.has_key(aid): |
---|
| 696 | vlan_no = self.state[aid].get('vlan', None) |
---|
| 697 | else: |
---|
| 698 | vlan_no = None |
---|
| 699 | self.state_lock.release() |
---|
[7dbfaed] | 700 | self.log.debug("Stop segment for vlan: %s" % vlan_no) |
---|
[175b444] | 701 | |
---|
| 702 | if not vlan_no: |
---|
| 703 | raise service_error(service_error.internal, |
---|
| 704 | "Can't find assigfned vlan for for %s" % aid) |
---|
| 705 | |
---|
| 706 | self.vlans.add(vlan_no) |
---|
| 707 | self.state_lock.acquire() |
---|
| 708 | self.state[aid]['vlan'] = None |
---|
| 709 | self.state_lock.release() |
---|
| 710 | return { 'allocID': req['allocID'] } |
---|