hello,
I'm just learning about dll's and have created a custom dissector. I was hoping
someone could help clear up using a dll with my dissector. I'm currently using
LoadLibrary() and i have just started trying to use the dll. My dll will be
using 2 other .lib's. Is it possible to create a variable in the dll and have
functions that can be used by the dissector plugin to set it and manipulate it
without having direct access to it? I have tried to do so since it is a class
that i am trying to manipulate, which you cant do in c. The dll is written in
c++. Also, i'm having a bit of trouble using the functions in my dissector.
Here is some sample.
after the #includes:
typedef void (*CreateProxy)( const BYTE*, int );
typedef char * (*GetMsgName)( void );
GetMsgName _GetMsgName;
CreateProxy _CreateProxy;
HINSTANCE LoadProxy;
void
load_DLL(void)
{
LoadProxy = LoadLibrary(TEXT("IComProxy.dll"));
if (LoadProxy != NULL) /** then load functions */
{
_CreateProxy = (CreateProxy)GetProcAddress(LoadProxy,
"CreateProxy");
_GetMsgName = (GetMsgName)GetProcAddress(LoadProxy,
"GetMsgName");
}
}
void
unload_DLL(void)
{
FreeLibrary(LoadProxy);
}
//in static void dissect_icom
void *target;
char *msg;
target = tvb_memdup(tvb, offset, data_length);
(_CreateProxy)( (const BYTE*)target, data_length); //creates an object in the
dll
msg = (_GetMsgName)( void ); //should call a function in the object created in
the dll to return a char *
but i get:
packet-foo.c(234) : error C2143: syntax error : missing ')' before 'type'
packet-foo.c(234) : error C2059: syntax error : ')'
Thanks for any help,
Greg
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