| 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 random |
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| 6 | import string |
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| 7 | import subprocess |
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| 8 | import tempfile |
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| 9 | |
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| 10 | from util import * |
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| 11 | from fedid import fedid |
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| 12 | from fixed_resource import read_key_db, read_project_db |
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| 13 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
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| 14 | from service_error import service_error |
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| 15 | import logging |
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| 16 | |
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| 17 | |
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| 18 | # Configure loggers to dump to /dev/null which avoids errors if calling classes |
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| 19 | # don't configure them. |
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| 20 | class nullHandler(logging.Handler): |
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| 21 | def emit(self, record): pass |
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| 22 | |
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| 23 | fl = logging.getLogger("fedd.allocate.local") |
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| 24 | fl.addHandler(nullHandler()) |
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| 25 | fl = logging.getLogger("fedd.allocate.remote") |
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| 26 | fl.addHandler(nullHandler()) |
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| 27 | |
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| 28 | |
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| 29 | class allocate_project_local: |
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| 30 | """ |
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| 31 | Allocate projects on this machine in response to an access request. |
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| 32 | """ |
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| 33 | dynamic_projects = 4 |
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| 34 | dynamic_keys= 2 |
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| 35 | confirm_keys = 1 |
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| 36 | none = 0 |
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| 37 | |
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| 38 | levels = { |
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| 39 | 'dynamic_projects': dynamic_projects, |
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| 40 | 'dynamic_keys': dynamic_keys, |
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| 41 | 'confirm_keys': confirm_keys, |
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| 42 | 'none': none, |
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| 43 | } |
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| 44 | |
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| 45 | def __init__(self, config, auth=None): |
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| 46 | """ |
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| 47 | Initializer. Parses a configuration if one is given. |
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| 48 | """ |
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| 49 | |
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| 50 | self.debug = config.get("allocate", "debug", False) |
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| 51 | self.wap = config.get('allocate', 'wap', '/usr/testbed/sbin/wap') |
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| 52 | self.newproj = config.get('allocate', 'newproj', |
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| 53 | '/usr/testbed/sbin/newproj') |
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| 54 | self.mkproj = config.get('allocate', 'mkproj', |
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| 55 | '/usr/testbed/sbin/mkproj') |
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| 56 | self.rmproj = config.get('allocate', 'rmproj', |
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| 57 | '/usr/testbed/sbin/rmproj') |
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| 58 | self.addpubkey = config.get('allocate', 'addpubkey', |
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| 59 | '/usr/testbed/sbin/taddpubkey') |
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| 60 | self.grantnodetype = config.get('allocate', 'grantnodetype', |
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| 61 | '/usr/testbed/sbin/grantnodetype') |
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| 62 | self.confirmkey = config.get('allocate', 'confirmkey', |
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| 63 | '/usr/testbed/sbin/taddpubkey') |
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| 64 | self.allocation_level = config.get("allocate", "allocation_level", |
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| 65 | "none") |
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| 66 | self.log = logging.getLogger("fedd.allocate.local") |
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| 67 | set_log_level(config, "allocate", self.log) |
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| 68 | |
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| 69 | if auth: |
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| 70 | self.auth = auth |
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| 71 | else: |
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| 72 | auth = authorizer() |
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| 73 | log.warn("[allocate] No authorizer passed in, using local one") |
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| 74 | |
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| 75 | try: |
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| 76 | self.allocation_level = \ |
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| 77 | self.levels[self.allocation_level.strip().lower()] |
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| 78 | except KeyError: |
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| 79 | self.log.error("Bad allocation_level %s. Defaulting to none" % \ |
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| 80 | self.allocation_error) |
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| 81 | self.allocation_level = self.none |
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| 82 | |
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| 83 | access_db = config.get("allocate", "accessdb") |
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| 84 | if access_db: |
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| 85 | try: |
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| 86 | read_simple_accessdb(access_db, self.auth, 'allocate') |
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| 87 | except IOError, e: |
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| 88 | raise service_error(service_error.internal, |
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| 89 | "Error reading accessDB %s: %s" % (access_db, e)) |
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| 90 | except ValueError: |
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| 91 | raise service_error(service_error.internal, "%s" % e) |
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| 92 | |
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| 93 | |
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| 94 | fixed_key_db = config.get("allocate", "fixed_keys", None) |
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| 95 | fixed_project_db = config.get("allocate", "fixed_projects", None) |
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| 96 | self.fixed_keys = set() |
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| 97 | self.fixed_projects = set() |
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| 98 | |
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| 99 | # initialize the fixed resource sets |
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| 100 | for db, rset, fcn in (\ |
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| 101 | (fixed_key_db, self.fixed_keys, read_key_db), \ |
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| 102 | (fixed_project_db, self.fixed_projects, read_project_db)): |
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| 103 | if db: |
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| 104 | try: |
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| 105 | rset.update(fcn(db)) |
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| 106 | except: |
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| 107 | self.log.debug("Can't read resources from %s" % db) |
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| 108 | |
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| 109 | # Internal services are SOAP only |
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| 110 | self.soap_services = {\ |
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| 111 | "AllocateProject": soap_handler("AllocateProject", |
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| 112 | self.dynamic_project), |
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| 113 | "StaticProject": soap_handler("StaticProject", |
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| 114 | self.static_project), |
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| 115 | "ReleaseProject": soap_handler("ReleaseProject", |
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| 116 | self.release_project), |
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| 117 | } |
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| 118 | self.xmlrpc_services = { } |
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| 119 | |
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| 120 | def random_string(self, s, n=3): |
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| 121 | """Append n random ASCII characters to s and return the string""" |
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| 122 | rv = s |
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| 123 | for i in range(0,n): |
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| 124 | rv += random.choice(string.ascii_letters) |
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| 125 | return rv |
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| 126 | |
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| 127 | def write_attr_xml(self, file, root, lines): |
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| 128 | """ |
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| 129 | Write an emulab config file for a dynamic project. |
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| 130 | |
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| 131 | Format is <root><attribute name=lines[0]>lines[1]</attribute></root> |
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| 132 | """ |
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| 133 | # Convert a pair to an attribute line |
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| 134 | out_attr = lambda a,v : \ |
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| 135 | '<attribute name="%s"><value>%s</value></attribute>' % (a, v) |
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| 136 | |
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| 137 | f = os.fdopen(file, "w") |
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| 138 | f.write("<%s>\n" % root) |
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| 139 | f.write("\n".join([out_attr(*l) for l in lines])) |
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| 140 | f.write("</%s>\n" % root) |
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| 141 | f.close() |
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| 142 | |
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| 143 | |
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| 144 | def dynamic_project(self, req, fedid=None): |
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| 145 | """ |
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| 146 | Create a dynamic project with ssh access |
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| 147 | |
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| 148 | Req includes the project and resources as a dictionary |
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| 149 | """ |
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| 150 | |
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| 151 | # Internal calls do not have a fedid parameter (i.e., local calls on |
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| 152 | # behalf of already vetted fedids) |
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| 153 | if fedid and not self.auth.check_attribute(fedid, "allocate"): |
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| 154 | self.log.debug("[allocate] Access denied (%s)" % fedid) |
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| 155 | raise service_error(service_error.access, "Access Denied") |
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| 156 | |
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| 157 | if self.allocation_level < self.dynamic_projects: |
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| 158 | raise service_error(service_error.access, |
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| 159 | "[dynamic_project] dynamic project allocation not " + \ |
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| 160 | "permitted: check allocation level") |
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| 161 | # tempfiles for the parameter files |
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| 162 | uf, userfile = tempfile.mkstemp(prefix="usr", suffix=".xml", |
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| 163 | dir="/tmp") |
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| 164 | pf, projfile = tempfile.mkstemp(prefix="proj", suffix=".xml", |
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| 165 | dir="/tmp") |
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| 166 | |
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| 167 | if req.has_key('AllocateProjectRequestBody') and \ |
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| 168 | req['AllocateProjectRequestBody'].has_key('project'): |
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| 169 | proj = req['AllocateProjectRequestBody']['project'] |
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| 170 | else: |
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| 171 | raise service_error(service_error.req, |
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| 172 | "Badly formed allocation request") |
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| 173 | # Take the first user and ssh key |
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| 174 | name = proj.get('name', None) or self.random_string("proj",4) |
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| 175 | user = proj.get('user', None) |
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| 176 | if user != None: |
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| 177 | user = user[0] # User is a list, take the first entry |
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| 178 | if not user.has_key("userID"): |
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| 179 | uname = self.random_string("user", 3) |
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| 180 | else: |
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| 181 | uid = proj['userID'] |
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| 182 | # XXX: fedid |
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| 183 | uname = uid.get('localname', None) or \ |
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| 184 | uid.get('kerberosUsername', None) or \ |
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| 185 | uid.get('uri', None) |
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| 186 | if uname == None: |
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| 187 | raise service_error(service_error.req, "No ID for user"); |
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| 188 | |
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| 189 | access = user.get('access', None) |
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| 190 | if access != None: |
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| 191 | ssh = access[0].get('sshPubkey', None) |
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| 192 | if ssh == None: |
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| 193 | raise service_error(service_error.req, |
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| 194 | "No ssh key for user"); |
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| 195 | else: |
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| 196 | raise service_error(service_error.req, |
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| 197 | "No access information for project"); |
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| 198 | |
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| 199 | # uname, name and ssh are set |
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| 200 | user_fields = [ |
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| 201 | ("name", "Federation User %s" % uname), |
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| 202 | ("email", "%s-fed@isi.deterlab.net" % uname), |
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| 203 | ("password", self.random_string("", 8)), |
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| 204 | ("login", uname), |
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| 205 | ("address", "4676 Admiralty"), |
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| 206 | ("city", "Marina del Rey"), |
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| 207 | ("state", "CA"), |
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| 208 | ("zip", "90292"), |
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| 209 | ("country", "USA"), |
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| 210 | ("phone", "310-448-9190"), |
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| 211 | ("title", "None"), |
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| 212 | ("affiliation", "USC/ISI"), |
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| 213 | ("pubkey", ssh) |
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| 214 | ] |
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| 215 | |
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| 216 | proj_fields = [ |
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| 217 | ("name", name), |
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| 218 | ("short description", "dynamic federated project"), |
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| 219 | ("URL", "http://www.isi.edu/~faber"), |
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| 220 | ("funders", "USC/USU"), |
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| 221 | ("long description", "Federation access control"), |
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| 222 | ("public", "1"), |
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| 223 | ("num_pcs", "100"), |
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| 224 | ("linkedtous", "1"), |
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| 225 | ("newuser_xml", userfile) |
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| 226 | ] |
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| 227 | |
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| 228 | |
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| 229 | # Write out the files |
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| 230 | self.write_attr_xml(uf, "user", user_fields) |
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| 231 | self.write_attr_xml(pf, "project", proj_fields) |
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| 232 | |
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| 233 | # Generate the commands (only grantnodetype's are dynamic) |
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| 234 | cmds = [ |
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| 235 | (self.wap, self.newproj, projfile), |
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| 236 | (self.wap, self.mkproj, name) |
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| 237 | ] |
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| 238 | |
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| 239 | # Add commands to grant access to any resources in the request. |
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| 240 | for nt in [ h for r in req.get('resources', []) \ |
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| 241 | if r.has_key('node') and r['node'].has_key('hardware')\ |
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| 242 | for h in r['node']['hardware'] ] : |
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| 243 | cmds.append((self.wap, self.grantnodetype, '-p', name, nt)) |
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| 244 | |
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| 245 | # Create the projects |
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| 246 | rc = 0 |
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| 247 | for cmd in cmds: |
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| 248 | self.log.debug("[dynamic_project]: %s" % ' '.join(cmd)) |
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| 249 | if not self.debug: |
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| 250 | try: |
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| 251 | rc = subprocess.call(cmd) |
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| 252 | except OSerror, e: |
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| 253 | raise service_error(service_error.internal, |
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| 254 | "Dynamic project subprocess creation error "+ \ |
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| 255 | "[%s] (%s)" % (cmd[1], e.strerror)) |
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| 256 | |
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| 257 | if rc != 0: |
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| 258 | raise service_error(service_error.internal, |
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| 259 | "Dynamic project subprocess error " +\ |
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| 260 | "[%s] (%d)" % (cmd[1], rc)) |
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| 261 | # Clean up tempfiles |
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| 262 | os.unlink(userfile) |
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| 263 | os.unlink(projfile) |
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| 264 | rv = {\ |
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| 265 | 'project': {\ |
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| 266 | 'name': { 'localname': name }, |
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| 267 | 'user' : [ {\ |
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| 268 | 'userID': { 'localname' : uname }, |
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| 269 | 'access': [ { 'sshPubkey' : ssh } ], |
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| 270 | } ]\ |
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| 271 | }\ |
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| 272 | } |
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| 273 | return rv |
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| 274 | |
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| 275 | def static_project(self, req, fedid=None): |
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| 276 | """ |
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| 277 | Be certain that the local project in the request has access to the |
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| 278 | proper resources and users have correct keys. Add them if necessary. |
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| 279 | """ |
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| 280 | |
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| 281 | cmds = [] |
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| 282 | |
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| 283 | # Internal calls do not have a fedid parameter (i.e., local calls on |
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| 284 | # behalf of already vetted fedids) |
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| 285 | if fedid and not self.auth.check_attribute(fedid, "allocate"): |
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| 286 | self.log.debug("[allocate] Access denied (%s)" % fedid) |
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| 287 | raise service_error(service_error.access, "Access Denied") |
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| 288 | # While we should be more careful about this, for the short term, add |
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| 289 | # the keys to the specified users. |
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| 290 | |
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| 291 | try: |
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| 292 | users = req['StaticProjectRequestBody']['project']['user'] |
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| 293 | pname = req['StaticProjectRequestBody']['project']\ |
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| 294 | ['name']['localname'] |
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| 295 | resources = req['StaticProjectRequestBody'].get('resources', []) |
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| 296 | except KeyError: |
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| 297 | raise service_error(service_error.req, "Badly formed request") |
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| 298 | |
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| 299 | |
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| 300 | for u in users: |
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| 301 | try: |
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| 302 | name = u['userID']['localname'] |
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| 303 | except KeyError: |
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| 304 | raise service_error(service_error.req, "Badly formed user") |
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| 305 | for sk in [ k['sshPubkey'] for k in u.get('access', []) \ |
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| 306 | if k.has_key('sshPubkey')]: |
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| 307 | if self.allocation_level >= self.dynamic_keys: |
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| 308 | cmds.append((self.wap, self.addpubkey, '-w', \ |
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| 309 | '-u', name, '-k', sk)) |
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| 310 | elif self.allocation_level >= self.confirm_keys: |
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| 311 | cmds.append((self.wap, self.confirmkey, '-C', \ |
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| 312 | '-u', name, '-k', sk)) |
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| 313 | else: |
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| 314 | self.log.warning("[static_project] no checking of " + \ |
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| 315 | "static keys") |
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| 316 | |
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| 317 | |
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| 318 | # Add commands to grant access to any resources in the request. The |
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| 319 | # list comprehension pulls out the hardware types in the node entries |
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| 320 | # in the resources list. |
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| 321 | for nt in [ h for r in resources \ |
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| 322 | if r.has_key('node') and r['node'].has_key('hardware')\ |
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| 323 | for h in r['node']['hardware'] ] : |
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| 324 | if self.allocation_level >= self.confirm_keys: |
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| 325 | cmds.append((self.wap, self.grantnodetype, '-p', pname, nt)) |
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| 326 | |
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| 327 | # Run the commands |
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| 328 | rc = 0 |
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| 329 | for cmd in cmds: |
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| 330 | self.log.debug("[static_project]: %s" % ' '.join(cmd)) |
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| 331 | if not self.debug: |
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| 332 | try: |
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| 333 | rc = subprocess.call(cmd) |
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| 334 | except OSError, e: |
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| 335 | raise service_error(service_error.internal, |
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| 336 | "Static project subprocess creation error "+ \ |
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| 337 | "[%s] (%s)" % (cmd[0], e.strerror)) |
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| 338 | |
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| 339 | if rc != 0: |
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| 340 | raise service_error(service_error.internal, |
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| 341 | "Static project subprocess error " +\ |
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| 342 | "[%s] (%d)" % (cmd[0], rc)) |
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| 343 | |
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| 344 | return { 'project': req['StaticProjectRequestBody']['project']} |
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| 345 | |
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| 346 | def release_project(self, req, fedid=None): |
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| 347 | """ |
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| 348 | Remove user keys from users and delete dynamic projects. |
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| 349 | |
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| 350 | Only keys not in the set of fixed keys are deleted. and there are |
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| 351 | similar protections for projects. |
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| 352 | """ |
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| 353 | # Internal calls do not have a fedid parameter (i.e., local calls on |
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| 354 | # behalf of already vetted fedids) |
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| 355 | if fedid and not self.auth.check_attribute(fedid, "allocate"): |
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| 356 | self.log.debug("[allocate] Access denied (%s)" % fedid) |
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| 357 | raise service_error(service_error.access, "Access Denied") |
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| 358 | |
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| 359 | cmds = [] |
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| 360 | pname = None |
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| 361 | users = [] |
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| 362 | |
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| 363 | try: |
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| 364 | if req['ReleaseProjectRequestBody']['project'].has_key('name'): |
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| 365 | pname = req['ReleaseProjectRequestBody']['project']\ |
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| 366 | ['name']['localname'] |
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| 367 | if req['ReleaseProjectRequestBody']['project'].has_key('user'): |
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| 368 | users = req['ReleaseProjectRequestBody']['project']['user'] |
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| 369 | except KeyError: |
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| 370 | raise service_error(service_error.req, "Badly formed request") |
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| 371 | |
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| 372 | for u in users: |
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| 373 | try: |
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| 374 | name = u['userID']['localname'] |
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| 375 | except KeyError: |
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| 376 | raise service_error(service_error.req, "Badly formed user") |
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| 377 | for sk in [ k['sshPubkey'] for k in u.get('access', []) \ |
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| 378 | if k.has_key('sshPubkey')]: |
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| 379 | if (name.rstrip(), sk.rstrip()) not in self.fixed_keys: |
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| 380 | if self.allocation_level >= self.dynamic_keys: |
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| 381 | cmds.append((self.wap, self.addpubkey, '-R', '-w', \ |
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| 382 | '-u', name, '-k', sk)) |
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| 383 | if pname and pname not in self.fixed_projects and \ |
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| 384 | self.allocation_level >= self.dynamic_projects: |
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| 385 | cmds.append((self.wap, self.rmproj, pname)) |
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| 386 | |
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| 387 | # Run the commands |
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| 388 | rc = 0 |
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| 389 | for cmd in cmds: |
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| 390 | self.log.debug("[release_project]: %s" % ' '.join(cmd)) |
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| 391 | if not self.debug: |
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| 392 | try: |
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| 393 | rc = subprocess.call(cmd) |
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| 394 | except OSError, e: |
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| 395 | raise service_error(service_error.internal, |
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| 396 | "Release project subprocess creation error "+ \ |
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| 397 | "[%s] (%s)" % (cmd[0], e.strerror)) |
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| 398 | |
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| 399 | if rc != 0: |
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| 400 | raise service_error(service_error.internal, |
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| 401 | "Release project subprocess error " +\ |
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| 402 | "[%s] (%d)" % (cmd[0], rc)) |
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| 403 | |
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| 404 | return { 'project': req['ReleaseProjectRequestBody']['project']} |
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| 405 | |
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| 406 | class allocate_project_remote: |
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| 407 | """ |
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| 408 | Allocate projects on a remote machine using the internal SOAP interface |
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| 409 | """ |
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| 410 | class proxy(service_caller): |
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| 411 | """ |
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| 412 | This class is a proxy functor (callable) that has the same signature as |
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| 413 | a function called by soap_handler or xmlrpc_handler, but that used the |
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| 414 | service_caller class to call the function remotely. |
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| 415 | """ |
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| 416 | |
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| 417 | def __init__(self, url, cert_file, cert_pwd, trusted_certs, auth, |
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| 418 | method): |
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| 419 | service_caller.__init__(self, method) |
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| 420 | self.url = url |
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| 421 | self.cert_file = cert_file |
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| 422 | self.cert_pwd = cert_pwd |
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| 423 | self.trusted_certs = trusted_certs |
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| 424 | self.request_body__name = "%sRequestBody" % method |
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| 425 | self.resp_name = "%sResponseBody" % method |
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| 426 | self.auth = auth |
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| 427 | # Calling the proxy object directly invokes the proxy_call method, |
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| 428 | # not the service_call method. |
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| 429 | self.__call__ = self.proxy_call |
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| 430 | |
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| 431 | |
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| 432 | # Define the proxy, NB, the parameters to make_proxy are visible to the |
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| 433 | # definition of proxy. |
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| 434 | def proxy_call(self, req, fid=None): |
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| 435 | """ |
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| 436 | Send req on to a remote project instantiator. |
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| 437 | |
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| 438 | Req is just the message to be sent. This function re-wraps it. |
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| 439 | It also rethrows any faults. |
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| 440 | """ |
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| 441 | |
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| 442 | if req.has_key(self.request_body_name): |
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| 443 | req = req[self.request_body_name] |
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| 444 | else: |
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| 445 | print "request error" |
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| 446 | raise service_error(service_error.req, "Bad formated request"); |
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| 447 | |
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| 448 | r = self.call_service(self.url, req, self.cert_file, self.cert_pwd, |
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| 449 | self.trusted_certs) |
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| 450 | if r.has_key(self.resp_name): |
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| 451 | return r[self.resp_name] |
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| 452 | else: |
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| 453 | print "response error" |
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| 454 | raise service_error(service_error.protocol, |
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| 455 | "Bad proxy response") |
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| 456 | |
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| 457 | # back to defining the allocate_project_remote class |
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| 458 | def __init__(self, config, auth=None): |
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| 459 | """ |
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| 460 | Initializer. Parses a configuration if one is given. |
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| 461 | """ |
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| 462 | |
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| 463 | self.debug = config.get("allocate", "debug", False) |
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| 464 | self.url = config.get("allocate", "uri", "") |
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| 465 | |
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| 466 | self.cert_file = config.get("allocate", "cert_file", None) |
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| 467 | self.cert_pwd = config.get("allocate", "cert_pwd", None) |
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| 468 | self.trusted_certs = config.get("allocate", "trusted_certs", None) |
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| 469 | |
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| 470 | # Certs are promoted from the generic to the specific, so without a if |
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| 471 | # no dynamic project certificates, then proxy certs are used, and if |
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| 472 | # none of those the main certs. |
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| 473 | |
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| 474 | if config.has_option("globals", "proxy_cert_file"): |
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| 475 | if not self.cert_file: |
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| 476 | self.cert_file = config.get("globals", "proxy_cert_file") |
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| 477 | if config.has_option("globals", "proxy_cert_pwd"): |
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| 478 | self.cert_pwd = config.get("globals", "proxy_cert_pwd") |
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| 479 | |
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| 480 | if config.has_option("globals", "proxy_trusted_certs") and \ |
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| 481 | not self.trusted_certs: |
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| 482 | self.trusted_certs = \ |
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| 483 | config.get("globals", "proxy_trusted_certs") |
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| 484 | |
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| 485 | if config.has_option("globals", "cert_file"): |
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| 486 | has_pwd = config.has_option("globals", "cert_pwd") |
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| 487 | if not self.cert_file: |
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| 488 | self.cert_file = config.get("globals", "cert_file") |
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| 489 | if has_pwd: |
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| 490 | self.cert_pwd = config.get("globals", "cert_pwd") |
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| 491 | |
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| 492 | if config.get("globals", "trusted_certs") and not self.trusted_certs: |
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| 493 | self.trusted_certs = \ |
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| 494 | config.get("globals", "trusted_certs") |
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| 495 | |
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| 496 | self.soap_services = { } |
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| 497 | self.xmlrpc_services = { } |
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| 498 | self.log = logging.getLogger("fedd.allocate.remote") |
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| 499 | set_log_level(config, "allocate", self.log) |
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| 500 | |
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| 501 | if auth: |
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| 502 | self.auth = auth |
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| 503 | else: |
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| 504 | auth = authorizer() |
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| 505 | log.warn("[allocate] No authorizer passed in, using local one") |
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| 506 | |
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| 507 | # The specializations of the proxy functions |
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| 508 | self.dynamic_project = self.proxy(self.url, self.cert_file, |
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| 509 | self.cert_pwd, self.trusted_certs, self.auth, |
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| 510 | "AllocateProject") |
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| 511 | self.static_project = self.proxy(self.url, self.cert_file, |
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| 512 | self.cert_pwd, self.trusted_certs, self.auth, |
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| 513 | "StaticProject") |
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| 514 | self.release_project = self.proxy(self.url, self.cert_file, |
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| 515 | self.cert_pwd, self.trusted_certs, self.auth, |
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| 516 | "ReleaseProject") |
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| 517 | |
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