id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
98	NULL pointer check for address to exported function	Knut Landmark		"In the following code fragment occurring twice in zoo_service_loader.c, `GetProcAddress` or `dlsym` will return `NULL` if a user has mistyped the service name (the WPS `Identifier` parameter):

{{{
#ifdef WIN32
	typedef int (CALLBACK* execute_t)(char***,char***,char***);
	execute_t execute=(execute_t)GetProcAddress(so,fname);
#else
	typedef int (*execute_t)(char***,char***,char***);
	execute_t execute=(execute_t)dlsym(so,fname);
#endif
}}}

This will cause a crash when attempting to invoke the function at the address given by `execute`:
{{{
*eres=execute(&m,&request_input_real_format,&request_output_real_format);
}}}

There should be a check to avoid this happening (with an error message).


"	defect	closed	major		zoo-kernel		fixed