| 1 | #!/usr/local/bin/python |
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| 2 | |
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| 3 | import sys |
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| 4 | |
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| 5 | import emulab_access |
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| 6 | import dragon_access |
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| 7 | import protogeni_access |
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| 8 | import deter_internal_access |
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| 9 | import skeleton_access |
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| 10 | |
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| 11 | from experiment_control import experiment_control_local |
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| 12 | from ns2topdl import ns2topdl_local |
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| 13 | from util import read_simple_accessdb |
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| 14 | from deter import fedid |
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| 15 | |
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| 16 | from authorizer import authorizer, abac_authorizer |
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| 17 | |
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| 18 | class deter_impl: |
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| 19 | """ |
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| 20 | The implementation of access control based on mapping users to projects. |
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| 21 | |
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| 22 | Users can be mapped to existing projects or have projects created |
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| 23 | dynamically. This implements both direct requests and proxies. |
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| 24 | """ |
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| 25 | # Used by the SOAP caller |
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| 26 | soap_namespaces = ('http://www.isi.edu/fedd.wsdl', |
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| 27 | 'http://www.isi.edu/fedd_internal.wsdl') |
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| 28 | |
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| 29 | def __init__(self, config=None): |
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| 30 | """ |
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| 31 | Initializer. Uses the parsed configuration to create appropriate |
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| 32 | components. |
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| 33 | """ |
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| 34 | self.soap_services = { } |
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| 35 | self.xmlrpc_services = { } |
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| 36 | self.auth = None |
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| 37 | |
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| 38 | if config: |
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| 39 | self.cert_file = config.get("globals", "cert_file"); |
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| 40 | self.cert_pwd = config.get("globals", "cert_pwd"); |
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| 41 | self.trusted_certs = config.get("globals", "trusted_certs"); |
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| 42 | self.access_type = config.get("globals", "access_type", "emulab") |
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| 43 | self.auth_type = config.get("globals", "auth_type", "legacy") |
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| 44 | |
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| 45 | for mp in config.get("globals", "module_path","").split(":"): |
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| 46 | sys.path.append(mp) |
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| 47 | |
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| 48 | if self.auth_type == 'legacy': |
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| 49 | self.auth = authorizer() |
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| 50 | elif self.auth_type == 'abac': |
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| 51 | auth_url = config.get('globals', 'auth_url') |
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| 52 | if not auth_url: |
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| 53 | raise RuntimeError("auth_url required for ABAC " + \ |
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| 54 | "authorization") |
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| 55 | if self.cert_file: |
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| 56 | me = fedid(file=self.cert_file) |
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| 57 | else: |
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| 58 | raise RuntimeError("ABAC authorization needs a " +\ |
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| 59 | "certificate file") |
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| 60 | self.auth= abac_authorizer(url=auth_url, |
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| 61 | cert_file=self.cert_file, cert_pwd=self.cert_pwd, |
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| 62 | trusted_certs=self.trusted_certs, me=me) |
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| 63 | else: |
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| 64 | raise RuntimeError("Unknown authorizer type %s" % \ |
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| 65 | self.auth_type) |
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| 66 | |
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| 67 | access_db = config.get("globals", "accessdb") |
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| 68 | |
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| 69 | if access_db: |
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| 70 | try: |
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| 71 | read_simple_accessdb(access_db, self.auth) |
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| 72 | except EnvironmentError, e: |
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| 73 | raise RuntimeError( |
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| 74 | "Error reading accessDB %s: %s" % (access_db, e)) |
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| 75 | except ValueError, e: |
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| 76 | raise RuntimeError("%s" % e) |
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| 77 | |
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| 78 | if config.has_section("access"): |
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| 79 | if self.access_type == "emulab": |
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| 80 | self.access = emulab_access.access(config, self.auth) |
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| 81 | elif self.access_type == "dragon": |
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| 82 | self.access = dragon_access.access(config, self.auth) |
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| 83 | elif self.access_type == "protogeni": |
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| 84 | self.access = protogeni_access.access(config, self.auth) |
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| 85 | elif self.access_type == "deter_internal": |
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| 86 | self.access = deter_internal_access.access(config, |
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| 87 | self.auth) |
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| 88 | elif self.access_type == "skel": |
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| 89 | self.access = skeleton_access.access(config, self.auth) |
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| 90 | else: |
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| 91 | try: |
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| 92 | exec 'from %s import access as plugin_access' \ |
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| 93 | % self.access_type |
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| 94 | self.access = plugin_access(config, self.auth) |
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| 95 | except ImportError, e: |
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| 96 | raise RuntimeError( |
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| 97 | "Unknown access_type: %s (import failed: %s)" \ |
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| 98 | % (self.access_type, e)) |
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| 99 | self.soap_services.update(self.access.soap_services) |
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| 100 | self.xmlrpc_services.update(self.access.xmlrpc_services) |
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| 101 | else: |
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| 102 | self.access = None |
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| 103 | |
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| 104 | if config.has_section("experiment_control"): |
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| 105 | self.experiment = \ |
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| 106 | experiment_control_local(config, self.auth) |
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| 107 | # Tell the experiment control where local access control is and |
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| 108 | # what testbeds it pertains to. |
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| 109 | if getattr(self, 'access', None): |
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| 110 | for t in self.access.testbed: |
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| 111 | self.experiment.local_access[t] = self.access |
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| 112 | |
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| 113 | self.soap_services.update(self.experiment.soap_services) |
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| 114 | self.xmlrpc_services.update(self.experiment.xmlrpc_services) |
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| 115 | self.get_handler = self.experiment.get_handler |
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| 116 | else: |
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| 117 | if self.access and getattr(self.access, 'get_handler', None): |
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| 118 | self.get_handler = self.access.get_handler |
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| 119 | else: |
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| 120 | self.get_handler = None |
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| 121 | |
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| 122 | if config.has_section("ns2topdl"): |
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| 123 | self.ns2topdl = ns2topdl_local(config, self.auth) |
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| 124 | self.soap_services.update(self.ns2topdl.soap_services) |
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| 125 | self.xmlrpc_services.update(self.ns2topdl.xmlrpc_services) |
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| 126 | |
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| 127 | def new_feddservice(config): |
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| 128 | return deter_impl(config) |
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