root/ext/xmlrpc/libxmlrpc/system_methods.c

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DEFINITIONS

This source file includes following definitions.
  1. xsm_lazy_doc_methods_cb
  2. xsm_register
  3. xsm_system_multicall_cb
  4. xsm_system_get_capabilities_cb

   1 /*
   2   This file is part of libXMLRPC - a C library for xml-encoded function calls.
   3 
   4   Author: Dan Libby (dan@libby.com)
   5   Epinions.com may be contacted at feedback@epinions-inc.com
   6 */
   7 
   8 /*
   9   Copyright 2001 Epinions, Inc.
  10 
  11   Subject to the following 3 conditions, Epinions, Inc.  permits you, free
  12   of charge, to (a) use, copy, distribute, modify, perform and display this
  13   software and associated documentation files (the "Software"), and (b)
  14   permit others to whom the Software is furnished to do so as well.
  15 
  16   1) The above copyright notice and this permission notice shall be included
  17   without modification in all copies or substantial portions of the
  18   Software.
  19 
  20   2) THE SOFTWARE IS PROVIDED "AS IS", WITHOUT ANY WARRANTY OR CONDITION OF
  21   ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY
  22   IMPLIED WARRANTIES OF ACCURACY, MERCHANTABILITY, FITNESS FOR A PARTICULAR
  23   PURPOSE OR NONINFRINGEMENT.
  24 
  25   3) IN NO EVENT SHALL EPINIONS, INC. BE LIABLE FOR ANY DIRECT, INDIRECT,
  26   SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOST PROFITS ARISING OUT
  27   OF OR IN CONNECTION WITH THE SOFTWARE (HOWEVER ARISING, INCLUDING
  28   NEGLIGENCE), EVEN IF EPINIONS, INC.  IS AWARE OF THE POSSIBILITY OF SUCH
  29   DAMAGES.
  30 
  31 */
  32 
  33 
  34 /****h* ABOUT/system_methods
  35  * AUTHOR
  36  *   Dan Libby, aka danda  (dan@libby.com)
  37  * HISTORY
  38  *   $Log$
  39  *   Revision 1.7  2001/09/29 21:58:05  danda
  40  *   adding cvs log to history section
  41  *
  42  *   4/28/2001 -- danda -- adding system.multicall and separating out system methods.
  43  * TODO
  44  * NOTES
  45  *******/
  46 
  47 
  48 #include "queue.h"
  49 #include "xmlrpc.h"
  50 #include "xmlrpc_private.h"
  51 #include "xmlrpc_introspection_private.h"
  52 #include "system_methods_private.h"
  53 #include <string.h>
  54 #include <stdlib.h>
  55 #include <stdarg.h>
  56 
  57 
  58 static const char* xsm_introspection_xml =
  59 "<?xml version='1.0' ?>"
  60 
  61 "<introspection version='1.0'>"
  62  "<typeList>"
  63 
  64  "<typeDescription name='system.value' basetype='struct' desc='description of a value'>"
  65    "<value type='string' name='name' optional='yes'>value identifier</value>"
  66    "<value type='string' name='type'>value&apos;s xmlrpc or user-defined type</value>"
  67    "<value type='string' name='description'>value&apos;s textual description</value> "
  68    "<value type='boolean' name='optional'>true if value is optional, else it is required</value> "
  69    "<value type='any' name='member' optional='yes'>a child of this element. n/a for scalar types</value> "
  70  "</typeDescription>"
  71 
  72  "<typeDescription name='system.valueList' basetype='array' desc='list of value descriptions'>"
  73    "<value type='system.value'/>"
  74  "</typeDescription>"
  75 
  76  "<typeDescription name='system.stringList' basetype='array' desc='list of strings'>"
  77    "<value type='string'/>"
  78  "</typeDescription>"
  79 
  80 
  81  "</typeList>"
  82 
  83  "<methodList>"
  84 
  85  "<!-- system.describeMethods -->"
  86  "<methodDescription name='system.describeMethods'>"
  87   "<author>Dan Libby</author>"
  88   "<purpose>fully describes the methods and types implemented by this XML-RPC server.</purpose>"
  89   "<version>1.1</version>"
  90   "<signatures>"
  91    "<signature>"
  92     "<params>"
  93      "<value type='array' name='methodList' optional='yes' desc='a list of methods to be described. if omitted, all are described.'>"
  94       "<value type='string'>a valid method name</value>"
  95      "</value>"
  96     "</params>"
  97     "<returns>"
  98      "<value type='struct' desc='contains methods list and types list'>"
  99       "<value type='array' name='methodList' desc='a list of methods'>"
 100        "<value type='struct' desc='representation of a single method'>"
 101         "<value type='string' name='name'>method name</value>"
 102         "<value type='string' name='version' optional='yes'>method version</value>"
 103         "<value type='string' name='author' optional='yes'>method author</value>"
 104         "<value type='string' name='purpose' optional='yes'>method purpose</value>"
 105         "<value type='array' name='signatures' desc='list of method signatures'>"
 106          "<value type='struct' desc='representation of a single signature'>"
 107           "<value type='system.valueList' name='params' optional='yes'>parameter list</value>"
 108           "<value type='system.valueList' name='returns' optional='yes'>return value list</value>"
 109          "</value>"
 110         "</value>"
 111         "<value type='system.stringList' name='bugs' optional='yes'>list of known bugs</value>"
 112         "<value type='system.stringList' name='errors' optional='yes'>list of possible errors and error codes</value>"
 113         "<value type='system.stringList' name='examples' optional='yes'>list of examples</value>"
 114         "<value type='system.stringList' name='history' optional='yes'>list of modifications</value>"
 115         "<value type='system.stringList' name='notes' optional='yes'>list of notes</value>"
 116         "<value type='system.stringList' name='see' optional='yes'>see also.  list of related methods</value>"
 117         "<value type='system.stringList' name='todo' optional='yes'>list of unimplemented features</value>"
 118        "</value>"
 119       "</value>"
 120       "<value type='array' name='typeList' desc='a list of type descriptions. Typically used for referencing complex types'>"
 121        "<value type='system.value'>a type description</value>"
 122       "</value>"
 123      "</value>"
 124     "</returns>"
 125    "</signature>"
 126   "</signatures>"
 127   "<see>"
 128    "<item name='system.listMethods' />"
 129    "<item name='system.methodSignature' />"
 130    "<item name='system.methodHelp' />"
 131   "</see>"
 132   "<example/>"
 133   "<error/>"
 134   "<note/>"
 135   "<bug/>"
 136   "<todo/>"
 137  "</methodDescription>"
 138 
 139  "<!-- system.listMethods -->"
 140  "<methodDescription name='system.listMethods'>"
 141   "<author>Dan Libby</author>"
 142   "<purpose>enumerates the methods implemented by this XML-RPC server.</purpose>"
 143   "<version>1.0</version>"
 144   "<signatures>"
 145    "<signature>"
 146     "<returns>"
 147      "<value type='array' desc='an array of strings'>"
 148       "<value type='string'>name of a method implemented by the server.</value>"
 149      "</value>"
 150     "</returns>"
 151    "</signature>"
 152   "</signatures>"
 153   "<see>"
 154    "<item name='system.describeMethods' />"
 155    "<item name='system.methodSignature' />"
 156    "<item name='system.methodHelp' />"
 157   "</see>"
 158   "<example/>"
 159   "<error/>"
 160   "<note/>"
 161   "<bug/>"
 162   "<todo/>"
 163  "</methodDescription>"
 164 
 165  "<!-- system.methodHelp -->"
 166  "<methodDescription name='system.methodHelp'>"
 167   "<author>Dan Libby</author>"
 168   "<purpose>provides documentation string for a single method</purpose>"
 169   "<version>1.0</version>"
 170   "<signatures>"
 171    "<signature>"
 172     "<params>"
 173      "<value type='string' name='methodName'>name of the method for which documentation is desired</value>"
 174     "</params>"
 175     "<returns>"
 176      "<value type='string'>help text if defined for the method passed, otherwise an empty string</value>"
 177     "</returns>"
 178    "</signature>"
 179   "</signatures>"
 180   "<see>"
 181    "<item name='system.listMethods' />"
 182    "<item name='system.methodSignature' />"
 183    "<item name='system.methodHelp' />"
 184   "</see>"
 185   "<example/>"
 186   "<error/>"
 187   "<note/>"
 188   "<bug/>"
 189   "<todo/>"
 190  "</methodDescription>"
 191 
 192  "<!-- system.methodSignature -->"
 193  "<methodDescription name='system.methodSignature'>"
 194   "<author>Dan Libby</author>"
 195   "<purpose>provides 1 or more signatures for a single method</purpose>"
 196   "<version>1.0</version>"
 197   "<signatures>"
 198    "<signature>"
 199     "<params>"
 200      "<value type='string' name='methodName'>name of the method for which documentation is desired</value>"
 201     "</params>"
 202     "<returns>"
 203      "<value type='array' desc='a list of arrays, each representing a signature'>"
 204       "<value type='array' desc='a list of strings. the first element represents the method return value. subsequent elements represent parameters.'>"
 205        "<value type='string'>a string indicating the xmlrpc type of a value. one of: string, int, double, base64, datetime, array, struct</value>"
 206       "</value>"
 207      "</value>"
 208     "</returns>"
 209    "</signature>"
 210   "</signatures>"
 211   "<see>"
 212    "<item name='system.listMethods' />"
 213    "<item name='system.methodHelp' />"
 214    "<item name='system.describeMethods' />"
 215   "</see>"
 216   "<example/>"
 217   "<error/>"
 218   "<note/>"
 219   "<bug/>"
 220   "<todo/>"
 221  "</methodDescription>"
 222 
 223  "<!-- system.multiCall -->"
 224  "<methodDescription name='system.multiCall'>"
 225   "<author>Dan Libby</author>"
 226   "<purpose>executes multiple methods in sequence and returns the results</purpose>"
 227   "<version>1.0</version>"
 228   "<signatures>"
 229    "<signature>"
 230     "<params>"
 231      "<value type='array' name='methodList' desc='an array of method call structs'>"
 232       "<value type='struct' desc='a struct representing a single method call'>"
 233        "<value type='string' name='methodName' desc='name of the method to be executed'/>"
 234        "<value type='array' name='params' desc='an array representing the params to a method. sub-elements should match method signature'/>"
 235       "</value>"
 236      "</value>"
 237     "</params>"
 238     "<returns>"
 239      "<value type='array' desc='an array of method responses'>"
 240       "<value type='array' desc='an array containing a single value, which is the method&apos;s response'/>"
 241      "</value>"
 242     "</returns>"
 243    "</signature>"
 244   "</signatures>"
 245   "<see>"
 246    "<item name='system.listMethods' />"
 247    "<item name='system.methodHelp' />"
 248    "<item name='system.describeMethods' />"
 249   "</see>"
 250   "<example/>"
 251   "<error/>"
 252   "<note/>"
 253   "<bug/>"
 254   "<todo/>"
 255  "</methodDescription>"
 256 
 257  "<!-- system.getCapabilities -->"
 258  "<methodDescription name='system.getCapabilities'>"
 259   "<author>Dan Libby</author>"
 260   "<purpose>returns a list of capabilities supported by this server</purpose>"
 261   "<version>1.0</version>"
 262   "<notes><item>spec url: http://groups.yahoo.com/group/xml-rpc/message/2897</item></notes>"
 263   "<signatures>"
 264    "<signature>"
 265     "<returns>"
 266      "<value type='struct' desc='list of capabilities, each with a unique key defined by the capability&apos;s spec'>"
 267       "<value type='struct' desc='definition of a single capability'>"
 268        "<value type='string' name='specURL'>www address of the specification defining this capability</value>"
 269        "<value type='int' name='specVersion'>version of the spec that this server's implementation conforms to</value>"
 270       "</value>"
 271      "</value>"
 272     "</returns>"
 273    "</signature>"
 274   "</signatures>"
 275   "<see>"
 276    "<item name='system.listMethods' />"
 277    "<item name='system.methodHelp' />"
 278    "<item name='system.describeMethods' />"
 279   "</see>"
 280   "<example/>"
 281   "<error/>"
 282   "<note/>"
 283   "<bug/>"
 284   "<todo/>"
 285  "</methodDescription>"
 286 
 287  "</methodList>"
 288 "</introspection>";
 289 
 290 
 291 /* forward declarations for static (non public, non api) funcs */
 292 static XMLRPC_VALUE xsm_system_multicall_cb(XMLRPC_SERVER server, XMLRPC_REQUEST input, void* userData);
 293 static XMLRPC_VALUE xsm_system_get_capabilities_cb(XMLRPC_SERVER server, XMLRPC_REQUEST input, void* userData);
 294 
 295 /*-*******************
 296 * System Methods API *
 297 *********************/
 298 
 299 static void xsm_lazy_doc_methods_cb(XMLRPC_SERVER server, void* userData) {
 300    XMLRPC_VALUE xDesc = XMLRPC_IntrospectionCreateDescription(xsm_introspection_xml, NULL);
 301    XMLRPC_ServerAddIntrospectionData(server, xDesc);
 302    XMLRPC_CleanupValue(xDesc);
 303 }
 304 
 305 void xsm_register(XMLRPC_SERVER server) {
 306    xi_register_system_methods(server);
 307 
 308    XMLRPC_ServerRegisterMethod(server, xsm_token_system_multicall, xsm_system_multicall_cb);
 309    XMLRPC_ServerRegisterMethod(server, xsm_token_system_get_capabilities, xsm_system_get_capabilities_cb);
 310 
 311    /* callback for documentation generation should it be requested */
 312    XMLRPC_ServerRegisterIntrospectionCallback(server, xsm_lazy_doc_methods_cb);
 313 }
 314 
 315 XMLRPC_VALUE xsm_system_multicall_cb(XMLRPC_SERVER server, XMLRPC_REQUEST input, void* userData) {
 316    XMLRPC_VALUE xArray = XMLRPC_VectorRewind(XMLRPC_RequestGetData(input));
 317    XMLRPC_VALUE xReturn = XMLRPC_CreateVector(0, xmlrpc_vector_array);
 318 
 319    if (xArray) {
 320       XMLRPC_VALUE xMethodIter = XMLRPC_VectorRewind(xArray);
 321 
 322       while (xMethodIter) {
 323          XMLRPC_REQUEST request = XMLRPC_RequestNew();
 324          if(request) {
 325             const char* methodName = XMLRPC_VectorGetStringWithID(xMethodIter, "methodName");
 326             XMLRPC_VALUE params = XMLRPC_VectorGetValueWithID(xMethodIter, "params");
 327 
 328             if(methodName && params) {
 329                XMLRPC_VALUE xRandomArray = XMLRPC_CreateVector(0, xmlrpc_vector_array);
 330                XMLRPC_RequestSetMethodName(request, methodName);
 331                XMLRPC_RequestSetData(request, params);
 332                XMLRPC_RequestSetRequestType(request, xmlrpc_request_call);
 333 
 334                XMLRPC_AddValueToVector(xRandomArray,
 335                                        XMLRPC_ServerCallMethod(server, request, userData));
 336 
 337                XMLRPC_AddValueToVector(xReturn, xRandomArray);
 338             }
 339             XMLRPC_RequestFree(request, 1);
 340          }
 341          xMethodIter = XMLRPC_VectorNext(xArray);
 342       }
 343    }
 344    return xReturn;
 345 }
 346 
 347 
 348 XMLRPC_VALUE xsm_system_get_capabilities_cb(XMLRPC_SERVER server, XMLRPC_REQUEST input, void* userData) {
 349    XMLRPC_VALUE xReturn = XMLRPC_CreateVector(0, xmlrpc_vector_struct);
 350    XMLRPC_VALUE xFaults = XMLRPC_CreateVector("faults_interop", xmlrpc_vector_struct);
 351    XMLRPC_VALUE xIntro = XMLRPC_CreateVector("introspection", xmlrpc_vector_struct);
 352 
 353    /* support for fault spec */
 354    XMLRPC_VectorAppendString(xFaults, "specURL", "http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php", 0);
 355    XMLRPC_VectorAppendInt(xFaults, "specVersion", 20010516);
 356 
 357    /* support for introspection spec */
 358    XMLRPC_VectorAppendString(xIntro, "specURL", "http://xmlrpc-epi.sourceforge.net/specs/rfc.introspection.php", 0);
 359    XMLRPC_VectorAppendInt(xIntro, "specVersion", 20010516);
 360 
 361    XMLRPC_AddValuesToVector(xReturn,
 362                             xFaults,
 363                             xIntro,
 364                             NULL);
 365 
 366    return xReturn;
 367 
 368 }
 369 
 370 /*-***********************
 371 * End System Methods API *
 372 *************************/
 373 
 374 
 375 

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