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Subject: RE: [OT]   Passing strings to and from C++ App
Date: Mon, 7 Jun 2004 12:41:17 +0200
Message-ID: 
 <DD2C1373CF5BAE47B4AA0BBF629E8D0052320B@EXCHANGE1.experian-scorex.com>
Thread-Topic: [OT]   Passing strings to and from C++ App
Thread-Index: AcRKdbg13pYCZMACSJaER/EKsG/h2ACBdUzQ
From: "Stephane Antonietti" <Stephane.Antonietti@experian-scorex.com>
To: "Apache AXIS C User List" <axis-c-user@ws.apache.org>

Hi=20

Using this method of allocating memory is very dangerous :

	char* return_value =3D "error";

Indeed, return_value has an allocated size of 6 bytes including the null
character. If the response is longer than 6, you get a buffer overrun.

Increase the size of the return_value buffer, and the things should go
better.

Regards,

Stephane

Stephane Antonietti
Sr Technical Consultant
Experian-Scorex, Monaco
-----------------------------------------------
stephane@experian-scorex.com
www.experian-scorex.com

-----Original Message-----
From: bsouther@fwdco.com [mailto:bsouther@fwdco.com]=20
Sent: Friday, June 04, 2004 10:55 PM
To: Apache AXIS C User List
Subject: [OT] Passing strings to and from C++ App

<disclaimer> Not an experienced C/C++ developer </disclaimer>

I'm not sure what the best way to pass strings back and forth from a c
app
to an Axis Client.  The following app works with a char* but then
displays an=20
assertion error (below).

Can anyone tell me what I'm doing wrong here?  Do I need to declare my
own=20
xsd__string types and do a conversion?  If so, are there any examples of
how=20
to do so out there? =20

Thanks in advance.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Error Message
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Debug Assertion Failed!

Program: D:\axis-clients\EchoCaps\Release\EchoCaps.exe
File: dbgheap.c
Line: 1011

Expression: _CrtIsValidHeapPointer(pUserData)


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
My Code
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
#include "EchoCaps.h"
#include <axis/server/AxisWrapperAPI.h>
#define ENDPOINT] =3D
"http://192.168.0.103:8888/file_manager/services/EchoCaps";

bool CallBase::bInitialized;
CallFunctions CallBase::ms_VFtable;

EchoCaps::EchoCaps(){
	m_pCall =3D new Call();
	m_pCall->SetProtocol(APTHTTP);
	m_pCall->SetEndpointURI(ENDPOINT);
}

EchoCaps::~EchoCaps(){
	delete m_pCall;
}

char* EchoCaps::capitalize(xsd__string inputString){
	char* return_value =3D "error";
	if (AXIS_SUCCESS !=3D m_pCall->Initialize(CPP_RPC_PROVIDER,
NORMAL_CHANNEL))=20
		return "failed to initialize" ;=09
=09
	m_pCall->SetTransportProperty(SOAPACTION_HEADER ,
"EchoCaps#capitalize");
	m_pCall->SetSOAPVersion(SOAP_VER_1_1);

	m_pCall->SetOperation("capitalize", ENDPOINT);
	m_pCall->AddParameter((void*)&inputString, "inputString",
XSD_STRING);
=09
	if (AXIS_SUCCESS =3D=3D m_pCall->Invoke()){
		printf("Invocation went well\n\n");

		if(AXIS_SUCCESS =3D=3D
m_pCall->CheckMessage("capitalizeResponse", ENDPOINT)){=09
			return_value =3D
m_pCall->GetElementAsString("capitalizeResponse", ENDPOINT);
			m_pCall->UnInitialize();
			return return_value;
		}	=09
	}

	m_pCall->UnInitialize();
	return "End of capitalize function\n\n";
}

void main(){
	EchoCaps echoCaps;=09
	char* input =3D "Input from C++ client";=09
	printf("results: %s\n\n", echoCaps.capitalize(msg));
	printf("done\n\n");
}