[0a20ef8] | 1 | #!/usr/local/bin/python |
---|
| 2 | |
---|
| 3 | import sys |
---|
| 4 | |
---|
| 5 | from BaseHTTPServer import BaseHTTPRequestHandler |
---|
| 6 | |
---|
| 7 | from ZSI import Fault, ParseException, FaultFromNotUnderstood, \ |
---|
| 8 | FaultFromZSIException, FaultFromException, ParsedSoap, SoapWriter |
---|
| 9 | |
---|
| 10 | from M2Crypto import SSL |
---|
| 11 | from M2Crypto.SSL.SSLServer import ThreadingSSLServer |
---|
| 12 | import xmlrpclib |
---|
| 13 | |
---|
| 14 | from fedid import fedid |
---|
[9556f2a] | 15 | try: |
---|
| 16 | from fedd_services import ns0 |
---|
| 17 | except ImportError: |
---|
| 18 | from fedd_server import ns0 |
---|
| 19 | |
---|
[0a20ef8] | 20 | from service_error import * |
---|
| 21 | |
---|
[81a7f3f] | 22 | import os.path |
---|
| 23 | |
---|
[0a20ef8] | 24 | import logging |
---|
[46a0f7a] | 25 | import traceback |
---|
[0a20ef8] | 26 | |
---|
| 27 | # The SSL server here is based on the implementation described at |
---|
| 28 | # http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
---|
| 29 | |
---|
| 30 | # Turn off the matching of hostname to certificate ID |
---|
| 31 | SSL.Connection.clientPostConnectionCheck = None |
---|
| 32 | |
---|
[ec4fb42] | 33 | class server(ThreadingSSLServer): |
---|
[0a20ef8] | 34 | """ |
---|
| 35 | Interface the fedd services to the XMLRPC and SOAP interfaces |
---|
| 36 | """ |
---|
[46a0f7a] | 37 | def __init__(self, ME, handler, ssl_ctx, impl, debug=False): |
---|
[0a20ef8] | 38 | """ |
---|
| 39 | Create an SSL server that handles the transport in handler using the |
---|
| 40 | credentials in ssl_ctx, and interfacing to the implementation of fedd |
---|
| 41 | services in fedd. ME is the host port pair on which to bind. |
---|
| 42 | """ |
---|
| 43 | ThreadingSSLServer.__init__(self, ME, handler, ssl_ctx) |
---|
| 44 | self.impl = impl |
---|
| 45 | self.soap_methods = impl.soap_services |
---|
| 46 | self.xmlrpc_methods = impl.xmlrpc_services |
---|
[81a7f3f] | 47 | self.get_handler = impl.get_handler |
---|
[0a20ef8] | 48 | self.log = logging.getLogger("fedd") |
---|
[46a0f7a] | 49 | if debug: self.handle_error = self.handle_error_debug |
---|
| 50 | else: self.handle_error = self.handle_error_standard |
---|
[0a20ef8] | 51 | |
---|
[8072c18] | 52 | def handle_error_debug(self, request=None, client_address=None): |
---|
[46a0f7a] | 53 | print '-'*40 |
---|
| 54 | traceback.print_exc() |
---|
| 55 | print '-'*40 |
---|
| 56 | |
---|
| 57 | |
---|
[8072c18] | 58 | def handle_error_standard(self, request=None, address=None): |
---|
[0a20ef8] | 59 | """ |
---|
| 60 | The default SSLServer prints a stack trace here. This is a little |
---|
| 61 | friendlier. |
---|
| 62 | """ |
---|
| 63 | if request or address: |
---|
| 64 | self.log.warn("[fedd] Error on incoming connection: %s %s" % \ |
---|
[8072c18] | 65 | (request or "", address or "")) |
---|
[0a20ef8] | 66 | else: |
---|
| 67 | self.log.warn("[fedd] Error on incoming connection " + \ |
---|
| 68 | "(Likely SSL error)") |
---|
| 69 | |
---|
[ec4fb42] | 70 | class soap_handler(BaseHTTPRequestHandler): |
---|
[0a20ef8] | 71 | """ |
---|
| 72 | Standard connection between SOAP and the fedd services in impl. |
---|
| 73 | |
---|
| 74 | Much of this is boilerplate from |
---|
| 75 | http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
---|
| 76 | """ |
---|
| 77 | server_version = "ZSI/2.0 fedd/0.1 " + BaseHTTPRequestHandler.server_version |
---|
| 78 | |
---|
| 79 | def send_xml(self, text, code=200): |
---|
| 80 | """Send an XML document as reply""" |
---|
| 81 | self.send_response(code) |
---|
| 82 | self.send_header('Content-type', 'text/xml; charset="utf-8"') |
---|
| 83 | self.send_header('Content-Length', str(len(text))) |
---|
| 84 | self.end_headers() |
---|
| 85 | self.wfile.write(text) |
---|
| 86 | self.wfile.flush() |
---|
| 87 | self.request.socket.close() |
---|
| 88 | |
---|
| 89 | def send_fault(self, f, code=500): |
---|
| 90 | """Send a SOAP encoded fault as reply""" |
---|
| 91 | self.send_xml(f.AsSOAP(processContents="lax"), code) |
---|
| 92 | |
---|
| 93 | def check_headers(self, ps): |
---|
| 94 | """Send a fault for any required envelope headers""" |
---|
| 95 | for (uri, localname) in ps.WhatMustIUnderstand(): |
---|
| 96 | self.send_fault(FaultFromNotUnderstood(uri, lname, 'fedd')) |
---|
| 97 | return False |
---|
| 98 | return True |
---|
| 99 | |
---|
| 100 | def check_method(self, ps): |
---|
| 101 | """Confirm that this class implements the namespace and SOAP method""" |
---|
| 102 | root = ps.body_root |
---|
| 103 | if root.namespaceURI not in self.server.impl.soap_namespaces: |
---|
| 104 | self.send_fault(Fault(Fault.Client, |
---|
| 105 | 'Unknown namespace "%s"' % root.namespaceURI)) |
---|
| 106 | return False |
---|
| 107 | |
---|
| 108 | if getattr(root, 'localName', None) == None: |
---|
| 109 | self.send_fault(Fault(Fault.Client, 'No method"')) |
---|
| 110 | return False |
---|
| 111 | return True |
---|
| 112 | |
---|
| 113 | def do_POST(self): |
---|
| 114 | """Treat an HTTP POST request as a SOAP service call""" |
---|
| 115 | try: |
---|
| 116 | cl = int(self.headers['content-length']) |
---|
| 117 | data = self.rfile.read(cl) |
---|
| 118 | ps = ParsedSoap(data) |
---|
| 119 | except ParseException, e: |
---|
| 120 | self.send_fault(Fault(Fault.Client, str(e))) |
---|
| 121 | return |
---|
| 122 | except Exception, e: |
---|
| 123 | self.send_fault(FaultFromException(e, 0, sys.exc_info()[2])) |
---|
| 124 | return |
---|
| 125 | if not self.check_headers(ps): return |
---|
| 126 | if not self.check_method(ps): return |
---|
| 127 | try: |
---|
| 128 | resp = self.soap_dispatch(ps.body_root.localName, ps, |
---|
| 129 | fedid(cert=self.request.get_peer_cert())) |
---|
| 130 | except Fault, f: |
---|
| 131 | self.send_fault(f) |
---|
| 132 | resp = None |
---|
| 133 | |
---|
| 134 | if resp != None: |
---|
| 135 | sw = SoapWriter() |
---|
| 136 | sw.serialize(resp) |
---|
| 137 | self.send_xml(str(sw)) |
---|
| 138 | |
---|
[81a7f3f] | 139 | def do_GET(self): |
---|
| 140 | """ |
---|
| 141 | If a get handler is registered, use that to retrieve data. |
---|
| 142 | """ |
---|
| 143 | if self.server.get_handler: |
---|
| 144 | code = 200 |
---|
| 145 | fid = fedid(cert=self.request.get_peer_cert()) |
---|
| 146 | fname, type = self.server.get_handler(self.path, fid) |
---|
[6c57fe9] | 147 | if fname: |
---|
| 148 | try: |
---|
| 149 | f = open(fname, "rb") |
---|
| 150 | size = os.path.getsize(fname) |
---|
[d3c8759] | 151 | except EnvironmentError, e: |
---|
[6c57fe9] | 152 | code = 404 |
---|
| 153 | size = 0 |
---|
| 154 | else: |
---|
[81a7f3f] | 155 | code = 404 |
---|
| 156 | size = 0 |
---|
| 157 | else: |
---|
| 158 | code = 404 |
---|
| 159 | size = 0 |
---|
| 160 | |
---|
| 161 | self.send_response(code) |
---|
| 162 | if code == 200: |
---|
| 163 | if type: |
---|
| 164 | self.send_header('Content-type', type) |
---|
| 165 | self.send_header('Content-Length', size) |
---|
| 166 | self.end_headers() |
---|
| 167 | bytes = f.read(4096) |
---|
| 168 | while len(bytes): |
---|
| 169 | self.wfile.write(bytes) |
---|
| 170 | bytes = f.read(4096) |
---|
| 171 | self.wfile.flush() |
---|
| 172 | self.request.socket.close() |
---|
| 173 | |
---|
| 174 | |
---|
[0a20ef8] | 175 | def log_request(self, code=0, size=0): |
---|
| 176 | """ |
---|
| 177 | Log request to the fedd logger |
---|
| 178 | """ |
---|
| 179 | self.server.log.info("Successful SOAP request code %d" % code) |
---|
| 180 | |
---|
| 181 | def soap_dispatch(self, method, req, fid): |
---|
| 182 | """ |
---|
| 183 | The connection to the implementation, using the method maps |
---|
| 184 | |
---|
| 185 | The implementation provides a mapping from SOAP method name to the |
---|
| 186 | method in the implementation that provides the service. |
---|
| 187 | """ |
---|
| 188 | if self.server.soap_methods.has_key(method): |
---|
| 189 | try: |
---|
| 190 | return self.server.soap_methods[method](req, fid) |
---|
| 191 | except service_error, e: |
---|
| 192 | de = ns0.faultType_Def( |
---|
| 193 | (ns0.faultType_Def.schema, |
---|
| 194 | "FeddFaultBody")).pyclass() |
---|
| 195 | de._code=e.code |
---|
| 196 | de._errstr=e.code_string() |
---|
| 197 | de._desc=e.desc |
---|
| 198 | if e.is_server_error(): |
---|
| 199 | raise Fault(Fault.Server, e.code_string(), detail=de) |
---|
| 200 | else: |
---|
| 201 | raise Fault(Fault.Client, e.code_string(), detail=de) |
---|
| 202 | else: |
---|
| 203 | raise Fault(Fault.Client, "Unknown method: %s" % method) |
---|
| 204 | |
---|
| 205 | |
---|
[ec4fb42] | 206 | class xmlrpc_handler(BaseHTTPRequestHandler): |
---|
[0a20ef8] | 207 | """ |
---|
| 208 | Standard connection between XMLRPC and the fedd services in impl. |
---|
| 209 | |
---|
| 210 | Much of this is boilerplate from |
---|
| 211 | http://www.xml.com/pub/a/ws/2004/01/20/salz.html |
---|
| 212 | """ |
---|
| 213 | server_version = "ZSI/2.0 fedd/0.1 " + BaseHTTPRequestHandler.server_version |
---|
| 214 | |
---|
| 215 | def send_xml(self, text, code=200): |
---|
| 216 | """Send an XML document as reply""" |
---|
| 217 | self.send_response(code) |
---|
| 218 | self.send_header('Content-type', 'text/xml; charset="utf-8"') |
---|
| 219 | self.send_header('Content-Length', str(len(text))) |
---|
| 220 | self.end_headers() |
---|
| 221 | self.wfile.write(text) |
---|
| 222 | self.wfile.flush() |
---|
| 223 | # Make sure to close the socket when we're done |
---|
| 224 | self.request.socket.close() |
---|
| 225 | |
---|
| 226 | def do_POST(self): |
---|
| 227 | """Treat an HTTP POST request as an XMLRPC service call""" |
---|
| 228 | # NB: XMLRPC faults are not HTTP errors, so the code is always 200, |
---|
| 229 | # unless an HTTP error occurs, which we don't handle. |
---|
| 230 | |
---|
| 231 | resp = None |
---|
| 232 | data = None |
---|
| 233 | method = None |
---|
| 234 | cl = int(self.headers['content-length']) |
---|
| 235 | data = self.rfile.read(cl) |
---|
| 236 | |
---|
| 237 | try: |
---|
| 238 | params, method = xmlrpclib.loads(data) |
---|
| 239 | except xmlrpclib.ResponseError: |
---|
| 240 | data = xmlrpclib.dumps(xmlrpclib.Fault("Client", |
---|
| 241 | "Malformed request"), methodresponse=True) |
---|
| 242 | |
---|
| 243 | if method != None: |
---|
| 244 | try: |
---|
| 245 | resp = self.xmlrpc_dispatch(method, params, |
---|
| 246 | fedid(cert=self.request.get_peer_cert())) |
---|
| 247 | data = xmlrpclib.dumps((resp,), encoding='UTF-8', |
---|
| 248 | methodresponse=True) |
---|
| 249 | except xmlrpclib.Fault, f: |
---|
| 250 | data = xmlrpclib.dumps(f, methodresponse=True) |
---|
| 251 | resp = None |
---|
| 252 | |
---|
| 253 | self.send_xml(data) |
---|
| 254 | |
---|
| 255 | def log_request(self, code=0, size=0): |
---|
| 256 | """ |
---|
| 257 | Log request to the fedd logger |
---|
| 258 | """ |
---|
| 259 | self.server.log.info("Successful XMLRPC request code %d" % code) |
---|
| 260 | |
---|
| 261 | |
---|
| 262 | def xmlrpc_dispatch(self, method, req, fid): |
---|
| 263 | """ |
---|
| 264 | The connection to the implementation, using the method maps |
---|
| 265 | |
---|
| 266 | The implementation provides a mapping from XMLRPC method name to the |
---|
| 267 | method in the implementation that provides the service. |
---|
| 268 | """ |
---|
| 269 | if self.server.xmlrpc_methods.has_key(method): |
---|
| 270 | try: |
---|
| 271 | return self.server.xmlrpc_methods[method](req, fid) |
---|
| 272 | except service_error, e: |
---|
| 273 | raise xmlrpclib.Fault(e.code_string(), e.desc) |
---|
| 274 | else: |
---|
| 275 | raise xmlrpclib.Fault(100, "Unknown method: %s" % method) |
---|