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429 lines
14 KiB
C++
429 lines
14 KiB
C++
// -*- C++ -*- <-- an Emacs control
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// Copyright information is at the bottom of the file.
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//=========================================================================
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// XML-RPC C++ API
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//=========================================================================
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#ifndef _XMLRPCCPP_H_
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#define _XMLRPCCPP_H_ 1
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// The C++ standard says we should either include <string.h> (which gets
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// us the wrong header), or say 'using namespace std;' (which doesn't
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// work with our version of g++). So this header name is technically wrong.
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// Tell me what your compiler does; I can provide some autoconf magic to the
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// Right Thing on most platforms.
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//
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// 2004.12.22 Bryan: This looks like a problem with whatever g++ he was
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// using, so if anything, the special case should be for that. In any case,
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// we've already added using namespace std to other files, without knowing
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// there was an issue, so I'm just going to do the "using namespace"
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// unconditionally and see who complains. If there are complaints, we can
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// improve the documentation here.
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//
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// Formerly, the "using namespace std" was under
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// "#if defined(__GNUC__) && (__GNUC__ >= 3)".
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#include <string>
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using namespace std;
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#include <xmlrpc_config.h>
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#include <xmlrpc.h>
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#include <xmlrpc_client.h>
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#include <xmlrpc_server.h>
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#define XMLRPC_NO_ASSIGNMENT \
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XMLRPC_FATAL_ERROR("Assignment operator not available"); return *this;
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//=========================================================================
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// XmlRpcFault
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//=========================================================================
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// A C++ exception class representing an XML-RPC fault.
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class XmlRpcFault {
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private:
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xmlrpc_env mFault;
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XmlRpcFault& operator= (const XmlRpcFault& f)
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{ (void) f; XMLRPC_NO_ASSIGNMENT }
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public:
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XmlRpcFault (const XmlRpcFault &fault);
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XmlRpcFault (const int faultCode, const string faultString);
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XmlRpcFault (const xmlrpc_env *env);
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~XmlRpcFault (void);
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int getFaultCode (void) const;
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string getFaultString (void) const;
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xmlrpc_env *getFaultEnv (void);
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};
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inline int XmlRpcFault::getFaultCode (void) const {
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return mFault.fault_code;
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}
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inline xmlrpc_env *XmlRpcFault::getFaultEnv (void) {
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return &mFault;
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}
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//=========================================================================
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// XmlRpcEnv
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//=========================================================================
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// This class can be used to wrap xmlrpc_env object. Use it as follows:
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//
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// XmlRpcEnv env;
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// xmlrpc_parse_value(env, v, "(i)", &i);
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// env.throwIfFaultOccurred();
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class XmlRpcEnv {
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private:
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xmlrpc_env mEnv;
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void throwMe (void) const;
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XmlRpcEnv& operator= (const XmlRpcEnv& e)
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{ (void) e; XMLRPC_NO_ASSIGNMENT }
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public:
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XmlRpcEnv (const XmlRpcEnv &env);
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XmlRpcEnv (void) { xmlrpc_env_init(&mEnv); }
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~XmlRpcEnv (void) { xmlrpc_env_clean(&mEnv); }
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bool faultOccurred (void) const { return mEnv.fault_occurred; };
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bool hasFaultOccurred (void) const { return faultOccurred(); };
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/* hasFaultOccurred() is for backward compatibility.
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faultOccurred() is a superior name for this.
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*/
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XmlRpcFault getFault (void) const;
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void throwIfFaultOccurred (void) const;
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operator xmlrpc_env * (void) { return &mEnv; }
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};
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inline void XmlRpcEnv::throwIfFaultOccurred (void) const {
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if (faultOccurred())
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throwMe();
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}
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//=========================================================================
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// XmlRpcValue
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//=========================================================================
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// An object in this class is an XML-RPC value.
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//
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// We have a complex structure to allow C code mixed in with C++ code
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// which uses this class to refer to the same XML-RPC value object.
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// This is especially important because there aren't proper C++ facilities
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// for much of Xmlrpc-c; you have to use the C facilities even if you'd
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// rather use proper C++.
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//
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// The XmlRpcValue object internally represents the value as an
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// xmlrpc_value. It hold one reference to the xmlrpc_value. Users
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// of XmlRpcValue never see that xmlrpc_value, but C code can. the
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// C code might create the xmlrpc_value and then bind it to an XmlRpcValue,
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// or it might get the xmlrpc_value handle from the XmlRpcValue. Finally,
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// C code can simply use the XmlRpcValue where an xmlrpc_value handle is
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// required and it gets converted automatically.
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//
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// So reference counting for the xmlrpc_value is quite a nightmare.
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class XmlRpcValue {
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private:
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xmlrpc_value *mValue;
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public:
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enum ReferenceBehavior {
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MAKE_REFERENCE,
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CONSUME_REFERENCE
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};
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typedef xmlrpc_int32 int32;
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XmlRpcValue (void);
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XmlRpcValue (xmlrpc_value *value,
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ReferenceBehavior behavior = MAKE_REFERENCE);
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XmlRpcValue (const XmlRpcValue& value);
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~XmlRpcValue (void);
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XmlRpcValue& operator= (const XmlRpcValue& value);
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// Accessing the value's type (think of this as lightweight RTTI).
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xmlrpc_type getType(void) const;
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// We don't supply an automatic conversion operator--you need to say
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// whether you want to make or borrow this object's reference.
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// XXX - Is it really OK for these to be const?
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xmlrpc_value *makeReference (void) const;
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xmlrpc_value *borrowReference (void) const;
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// Some static "constructor" functions.
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static XmlRpcValue makeInt (const XmlRpcValue::int32 i);
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static XmlRpcValue makeBool (const bool b);
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static XmlRpcValue makeDouble (const double d);
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static XmlRpcValue makeDateTime (const string& dateTime);
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static XmlRpcValue makeString (const string& str);
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static XmlRpcValue makeString (const char *const str);
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static XmlRpcValue makeString (const char *const str, size_t len);
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static XmlRpcValue makeArray (void);
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static XmlRpcValue makeStruct (void);
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static XmlRpcValue makeBase64 (const unsigned char *const data,
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size_t len);
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/*
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// An interface to xmlrpc_build_value.
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static XmlRpcValue buildValue (const char *const format, ...);
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*/
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// Some functions to get the underlying data.
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// These will throw an XmlRpcFault if the data is the wrong type.
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XmlRpcValue::int32 getInt (void) const;
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bool getBool (void) const;
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double getDouble (void) const;
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string getRawDateTime (void) const;
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string getString (void) const;
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XmlRpcValue getArray (void) const;
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XmlRpcValue getStruct (void) const;
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// This returns an internal pointer which will become invalid when
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// all references to the underlying value are destroyed.
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void getBase64 (const unsigned char *& out_data,
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size_t& out_len) const;
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/*
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// An interface to xmlrpc_parse_value.
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void parseValue (const char *const format, ...);
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*/
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// Array functions. These will throw an XmlRpcFault if the value
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// isn't an array.
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size_t arraySize (void) const;
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void arrayAppendItem (const XmlRpcValue& value);
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XmlRpcValue arrayGetItem (int index) const;
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// Struct functions. These will throw an XmlRpcFault if the value
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// isn't a struct.
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size_t structSize (void) const;
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bool structHasKey (const string& key) const;
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XmlRpcValue structGetValue (const string& key) const;
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void structSetValue (const string& key, const XmlRpcValue& value);
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void structGetKeyAndValue (const int index,
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string& out_key,
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XmlRpcValue& out_value) const;
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};
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inline XmlRpcValue::XmlRpcValue (xmlrpc_value *value,
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ReferenceBehavior behavior)
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{
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mValue = value;
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if (behavior == MAKE_REFERENCE)
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xmlrpc_INCREF(value);
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}
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inline XmlRpcValue::XmlRpcValue (const XmlRpcValue& value) {
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mValue = value.mValue;
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xmlrpc_INCREF(mValue);
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}
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inline XmlRpcValue::~XmlRpcValue (void) {
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xmlrpc_DECREF(mValue);
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}
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inline XmlRpcValue& XmlRpcValue::operator= (const XmlRpcValue& value) {
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// Must increment before we decrement, in case of assignment to self.
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xmlrpc_INCREF(value.mValue);
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xmlrpc_DECREF(mValue);
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mValue = value.mValue;
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return *this;
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}
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inline xmlrpc_type XmlRpcValue::getType (void) const {
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return xmlrpc_value_type(mValue);
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}
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inline xmlrpc_value *XmlRpcValue::makeReference (void) const {
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xmlrpc_INCREF(mValue);
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return mValue;
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}
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inline xmlrpc_value *XmlRpcValue::borrowReference (void) const {
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return mValue;
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}
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//=========================================================================
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// XmlRpcClient
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//=========================================================================
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class XmlRpcClient {
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private:
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string mServerUrl;
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public:
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static void Initialize (string appname, string appversion);
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static void Terminate (void);
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XmlRpcClient (const string& server_url) : mServerUrl(server_url) {}
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~XmlRpcClient (void) {}
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XmlRpcClient (const XmlRpcClient& client);
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XmlRpcClient& operator= (const XmlRpcClient& client);
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XmlRpcValue call (string method_name, XmlRpcValue param_array);
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void call_asynch (string method_name,
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XmlRpcValue param_array,
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xmlrpc_response_handler callback,
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void* user_data);
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void event_loop_asynch (unsigned long milliseconds);
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};
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inline void XmlRpcClient::call_asynch(string method_name,
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XmlRpcValue param_array,
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xmlrpc_response_handler callback,
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void* user_data)
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{
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xmlrpc_client_call_asynch_params(
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mServerUrl.c_str(),
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method_name.c_str(),
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callback,
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user_data,
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param_array.borrowReference());
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}
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inline void XmlRpcClient::event_loop_asynch(unsigned long milliseconds)
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{
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xmlrpc_client_event_loop_finish_asynch_timeout(milliseconds);
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}
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//=========================================================================
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// XmlRpcClient Methods
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//=========================================================================
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// These are inline for now, so we don't need to screw with linker issues
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// and build a separate client library.
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inline XmlRpcClient::XmlRpcClient (const XmlRpcClient& client)
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: mServerUrl(client.mServerUrl)
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{
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}
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inline XmlRpcClient& XmlRpcClient::operator= (const XmlRpcClient& client) {
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if (this != &client)
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mServerUrl = client.mServerUrl;
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return *this;
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}
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inline void XmlRpcClient::Initialize (string appname, string appversion) {
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xmlrpc_client_init(XMLRPC_CLIENT_NO_FLAGS,
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appname.c_str(),
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appversion.c_str());
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}
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inline void XmlRpcClient::Terminate (void) {
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xmlrpc_client_cleanup();
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}
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inline XmlRpcValue XmlRpcClient::call (string method_name,
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XmlRpcValue param_array)
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{
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XmlRpcEnv env;
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xmlrpc_value *result =
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xmlrpc_client_call_params(env,
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mServerUrl.c_str(),
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method_name.c_str(),
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param_array.borrowReference());
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env.throwIfFaultOccurred();
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return XmlRpcValue(result, XmlRpcValue::CONSUME_REFERENCE);
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}
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//=========================================================================
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// XmlRpcGenSrv
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//=========================================================================
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class XmlRpcGenSrv {
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private:
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xmlrpc_registry* mRegistry;
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xmlrpc_mem_block* alloc (XmlRpcEnv& env, const string& body) const;
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public:
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XmlRpcGenSrv (int flags);
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~XmlRpcGenSrv (void);
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xmlrpc_registry* getRegistry (void) const;
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XmlRpcGenSrv& addMethod (const string& name,
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xmlrpc_method method,
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void *data);
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XmlRpcGenSrv& addMethod (const string& name,
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xmlrpc_method method,
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void* data,
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const string& signature,
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const string& help);
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string handle (const string& body) const;
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};
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inline XmlRpcGenSrv::XmlRpcGenSrv (int flags) {
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XmlRpcEnv env;
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if (flags == flags){};
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mRegistry = xmlrpc_registry_new (env);
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env.throwIfFaultOccurred();
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}
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inline XmlRpcGenSrv::~XmlRpcGenSrv (void) {
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xmlrpc_registry_free (mRegistry);
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}
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inline xmlrpc_registry* XmlRpcGenSrv::getRegistry () const {
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return mRegistry;
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}
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#undef XMLRPC_NO_ASSIGNMENT
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// Copyright (C) 2001 by Eric Kidd. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. The name of the author may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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// SUCH DAMAGE.
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#endif /* _XMLRPCCPP_H_ */
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