[0a20ef8] | 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 | from BaseHTTPServer import BaseHTTPRequestHandler |
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| 6 | |
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| 7 | from ZSI import Fault, ParseException, FaultFromNotUnderstood, \ |
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| 8 | FaultFromZSIException, FaultFromException, ParsedSoap, SoapWriter |
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| 9 | |
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| 10 | from M2Crypto import SSL |
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| 11 | from M2Crypto.SSL.SSLServer import ThreadingSSLServer |
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| 12 | import xmlrpclib |
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| 13 | |
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[6bedbdba] | 14 | from deter import fedid |
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[8d5394e] | 15 | |
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| 16 | # ZSI uses a deprecated multifile interface. This shuts the warning system up. |
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| 17 | from warnings import filterwarnings |
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| 18 | filterwarnings("ignore", ".*multifile.*", DeprecationWarning, "ZSI") |
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| 19 | |
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[9556f2a] | 20 | try: |
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| 21 | from fedd_services import ns0 |
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| 22 | except ImportError: |
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| 23 | from fedd_server import ns0 |
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| 24 | |
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[0a20ef8] | 25 | from service_error import * |
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| 26 | |
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[81a7f3f] | 27 | import os.path |
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| 28 | |
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[0a20ef8] | 29 | import logging |
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[46a0f7a] | 30 | import traceback |
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[0a20ef8] | 31 | |
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| 32 | # The SSL server here is based on the implementation described at |
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| 33 | # http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
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| 34 | |
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| 35 | # Turn off the matching of hostname to certificate ID |
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| 36 | SSL.Connection.clientPostConnectionCheck = None |
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| 37 | |
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[ec4fb42] | 38 | class server(ThreadingSSLServer): |
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[0a20ef8] | 39 | """ |
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| 40 | Interface the fedd services to the XMLRPC and SOAP interfaces |
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| 41 | """ |
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[46a0f7a] | 42 | def __init__(self, ME, handler, ssl_ctx, impl, debug=False): |
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[0a20ef8] | 43 | """ |
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| 44 | Create an SSL server that handles the transport in handler using the |
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| 45 | credentials in ssl_ctx, and interfacing to the implementation of fedd |
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| 46 | services in fedd. ME is the host port pair on which to bind. |
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| 47 | """ |
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| 48 | ThreadingSSLServer.__init__(self, ME, handler, ssl_ctx) |
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| 49 | self.impl = impl |
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| 50 | self.soap_methods = impl.soap_services |
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| 51 | self.xmlrpc_methods = impl.xmlrpc_services |
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[81a7f3f] | 52 | self.get_handler = impl.get_handler |
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[0a20ef8] | 53 | self.log = logging.getLogger("fedd") |
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[46a0f7a] | 54 | if debug: self.handle_error = self.handle_error_debug |
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| 55 | else: self.handle_error = self.handle_error_standard |
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[0a20ef8] | 56 | |
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[8072c18] | 57 | def handle_error_debug(self, request=None, client_address=None): |
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[46a0f7a] | 58 | print '-'*40 |
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| 59 | traceback.print_exc() |
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| 60 | print '-'*40 |
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| 61 | |
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| 62 | |
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[8072c18] | 63 | def handle_error_standard(self, request=None, address=None): |
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[0a20ef8] | 64 | """ |
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| 65 | The default SSLServer prints a stack trace here. This is a little |
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| 66 | friendlier. |
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| 67 | """ |
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| 68 | if request or address: |
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| 69 | self.log.warn("[fedd] Error on incoming connection: %s %s" % \ |
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[8072c18] | 70 | (request or "", address or "")) |
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[0a20ef8] | 71 | else: |
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| 72 | self.log.warn("[fedd] Error on incoming connection " + \ |
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| 73 | "(Likely SSL error)") |
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| 74 | |
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[ec4fb42] | 75 | class soap_handler(BaseHTTPRequestHandler): |
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[0a20ef8] | 76 | """ |
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| 77 | Standard connection between SOAP and the fedd services in impl. |
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| 78 | |
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| 79 | Much of this is boilerplate from |
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| 80 | http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
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| 81 | """ |
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| 82 | server_version = "ZSI/2.0 fedd/0.1 " + BaseHTTPRequestHandler.server_version |
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| 83 | |
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| 84 | def send_xml(self, text, code=200): |
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| 85 | """Send an XML document as reply""" |
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| 86 | self.send_response(code) |
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| 87 | self.send_header('Content-type', 'text/xml; charset="utf-8"') |
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| 88 | self.send_header('Content-Length', str(len(text))) |
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| 89 | self.end_headers() |
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| 90 | self.wfile.write(text) |
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| 91 | self.wfile.flush() |
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| 92 | self.request.socket.close() |
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| 93 | |
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| 94 | def send_fault(self, f, code=500): |
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| 95 | """Send a SOAP encoded fault as reply""" |
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| 96 | self.send_xml(f.AsSOAP(processContents="lax"), code) |
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| 97 | |
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| 98 | def check_headers(self, ps): |
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| 99 | """Send a fault for any required envelope headers""" |
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| 100 | for (uri, localname) in ps.WhatMustIUnderstand(): |
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| 101 | self.send_fault(FaultFromNotUnderstood(uri, lname, 'fedd')) |
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| 102 | return False |
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| 103 | return True |
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| 104 | |
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| 105 | def check_method(self, ps): |
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| 106 | """Confirm that this class implements the namespace and SOAP method""" |
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| 107 | root = ps.body_root |
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| 108 | if root.namespaceURI not in self.server.impl.soap_namespaces: |
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| 109 | self.send_fault(Fault(Fault.Client, |
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| 110 | 'Unknown namespace "%s"' % root.namespaceURI)) |
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| 111 | return False |
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| 112 | |
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| 113 | if getattr(root, 'localName', None) == None: |
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| 114 | self.send_fault(Fault(Fault.Client, 'No method"')) |
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| 115 | return False |
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| 116 | return True |
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| 117 | |
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| 118 | def do_POST(self): |
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| 119 | """Treat an HTTP POST request as a SOAP service call""" |
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| 120 | try: |
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| 121 | cl = int(self.headers['content-length']) |
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| 122 | data = self.rfile.read(cl) |
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| 123 | ps = ParsedSoap(data) |
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| 124 | except ParseException, e: |
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| 125 | self.send_fault(Fault(Fault.Client, str(e))) |
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| 126 | return |
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| 127 | except Exception, e: |
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| 128 | self.send_fault(FaultFromException(e, 0, sys.exc_info()[2])) |
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| 129 | return |
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| 130 | if not self.check_headers(ps): return |
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| 131 | if not self.check_method(ps): return |
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| 132 | try: |
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| 133 | resp = self.soap_dispatch(ps.body_root.localName, ps, |
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| 134 | fedid(cert=self.request.get_peer_cert())) |
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| 135 | except Fault, f: |
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| 136 | self.send_fault(f) |
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| 137 | resp = None |
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[e83f2f2] | 138 | |
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[0a20ef8] | 139 | if resp != None: |
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| 140 | sw = SoapWriter() |
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| 141 | sw.serialize(resp) |
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| 142 | self.send_xml(str(sw)) |
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| 143 | |
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[81a7f3f] | 144 | def do_GET(self): |
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| 145 | """ |
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| 146 | If a get handler is registered, use that to retrieve data. |
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| 147 | """ |
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| 148 | if self.server.get_handler: |
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| 149 | code = 200 |
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| 150 | fid = fedid(cert=self.request.get_peer_cert()) |
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| 151 | fname, type = self.server.get_handler(self.path, fid) |
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[6c57fe9] | 152 | if fname: |
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| 153 | try: |
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| 154 | f = open(fname, "rb") |
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| 155 | size = os.path.getsize(fname) |
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[d3c8759] | 156 | except EnvironmentError, e: |
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[6c57fe9] | 157 | code = 404 |
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| 158 | size = 0 |
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| 159 | else: |
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[81a7f3f] | 160 | code = 404 |
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| 161 | size = 0 |
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| 162 | else: |
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| 163 | code = 404 |
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| 164 | size = 0 |
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| 165 | |
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| 166 | self.send_response(code) |
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| 167 | if code == 200: |
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| 168 | if type: |
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| 169 | self.send_header('Content-type', type) |
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| 170 | self.send_header('Content-Length', size) |
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| 171 | self.end_headers() |
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| 172 | bytes = f.read(4096) |
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| 173 | while len(bytes): |
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| 174 | self.wfile.write(bytes) |
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| 175 | bytes = f.read(4096) |
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| 176 | self.wfile.flush() |
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| 177 | self.request.socket.close() |
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| 178 | |
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| 179 | |
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[0a20ef8] | 180 | def log_request(self, code=0, size=0): |
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| 181 | """ |
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| 182 | Log request to the fedd logger |
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| 183 | """ |
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| 184 | self.server.log.info("Successful SOAP request code %d" % code) |
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| 185 | |
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| 186 | def soap_dispatch(self, method, req, fid): |
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| 187 | """ |
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| 188 | The connection to the implementation, using the method maps |
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| 189 | |
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| 190 | The implementation provides a mapping from SOAP method name to the |
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| 191 | method in the implementation that provides the service. |
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| 192 | """ |
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| 193 | if self.server.soap_methods.has_key(method): |
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| 194 | try: |
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| 195 | return self.server.soap_methods[method](req, fid) |
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| 196 | except service_error, e: |
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| 197 | de = ns0.faultType_Def( |
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| 198 | (ns0.faultType_Def.schema, |
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| 199 | "FeddFaultBody")).pyclass() |
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| 200 | de._code=e.code |
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| 201 | de._errstr=e.code_string() |
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| 202 | de._desc=e.desc |
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[e83f2f2] | 203 | for p in e.proof: |
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| 204 | dp = ns0.proofType_Def(ns0.proofType_Def.schema, |
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| 205 | "proof").pyclass() |
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| 206 | dp._prover = p.prover |
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| 207 | dp._principal = p.principal |
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| 208 | dp._attribute = p.attribute |
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| 209 | dp._credential = p.creds_to_certs() |
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| 210 | if de._proof: de._proof.append(dp) |
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| 211 | else: de._proof = [dp] |
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[0a20ef8] | 212 | if e.is_server_error(): |
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| 213 | raise Fault(Fault.Server, e.code_string(), detail=de) |
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| 214 | else: |
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| 215 | raise Fault(Fault.Client, e.code_string(), detail=de) |
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| 216 | else: |
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| 217 | raise Fault(Fault.Client, "Unknown method: %s" % method) |
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| 218 | |
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| 219 | |
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[ec4fb42] | 220 | class xmlrpc_handler(BaseHTTPRequestHandler): |
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[0a20ef8] | 221 | """ |
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| 222 | Standard connection between XMLRPC and the fedd services in impl. |
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| 223 | |
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| 224 | Much of this is boilerplate from |
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| 225 | http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
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| 226 | """ |
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| 227 | server_version = "ZSI/2.0 fedd/0.1 " + BaseHTTPRequestHandler.server_version |
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| 228 | |
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| 229 | def send_xml(self, text, code=200): |
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| 230 | """Send an XML document as reply""" |
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| 231 | self.send_response(code) |
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| 232 | self.send_header('Content-type', 'text/xml; charset="utf-8"') |
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| 233 | self.send_header('Content-Length', str(len(text))) |
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| 234 | self.end_headers() |
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| 235 | self.wfile.write(text) |
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| 236 | self.wfile.flush() |
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| 237 | # Make sure to close the socket when we're done |
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| 238 | self.request.socket.close() |
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| 239 | |
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| 240 | def do_POST(self): |
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| 241 | """Treat an HTTP POST request as an XMLRPC service call""" |
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| 242 | # NB: XMLRPC faults are not HTTP errors, so the code is always 200, |
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| 243 | # unless an HTTP error occurs, which we don't handle. |
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| 244 | |
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| 245 | resp = None |
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| 246 | data = None |
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| 247 | method = None |
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| 248 | cl = int(self.headers['content-length']) |
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| 249 | data = self.rfile.read(cl) |
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| 250 | |
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| 251 | try: |
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| 252 | params, method = xmlrpclib.loads(data) |
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| 253 | except xmlrpclib.ResponseError: |
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| 254 | data = xmlrpclib.dumps(xmlrpclib.Fault("Client", |
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| 255 | "Malformed request"), methodresponse=True) |
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| 256 | |
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| 257 | if method != None: |
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| 258 | try: |
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| 259 | resp = self.xmlrpc_dispatch(method, params, |
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| 260 | fedid(cert=self.request.get_peer_cert())) |
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| 261 | data = xmlrpclib.dumps((resp,), encoding='UTF-8', |
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| 262 | methodresponse=True) |
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| 263 | except xmlrpclib.Fault, f: |
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| 264 | data = xmlrpclib.dumps(f, methodresponse=True) |
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| 265 | resp = None |
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| 266 | |
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| 267 | self.send_xml(data) |
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| 268 | |
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| 269 | def log_request(self, code=0, size=0): |
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| 270 | """ |
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| 271 | Log request to the fedd logger |
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| 272 | """ |
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| 273 | self.server.log.info("Successful XMLRPC request code %d" % code) |
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| 274 | |
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| 275 | |
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| 276 | def xmlrpc_dispatch(self, method, req, fid): |
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| 277 | """ |
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| 278 | The connection to the implementation, using the method maps |
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| 279 | |
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| 280 | The implementation provides a mapping from XMLRPC method name to the |
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| 281 | method in the implementation that provides the service. |
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| 282 | """ |
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| 283 | if self.server.xmlrpc_methods.has_key(method): |
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| 284 | try: |
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| 285 | return self.server.xmlrpc_methods[method](req, fid) |
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| 286 | except service_error, e: |
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| 287 | raise xmlrpclib.Fault(e.code_string(), e.desc) |
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| 288 | else: |
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| 289 | raise xmlrpclib.Fault(100, "Unknown method: %s" % method) |
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