On Nov 7, 2008, at 4:02 PM, Crump, Michael wrote:
Hello,
JNA looks very exciting. I’m just starting to dig in and had a
question about mapping a couple of functions from libpam. It looks
like the preference is to create structures for c define types but
the libpam documentation specifically says that the pam_handle_t
type is a private structure that should not be accessed directly.
So I’m struggling with the best way to map the following functions
to jna:
int pam_start(const char *service_name, const char *user, const
struct pam_conv *pam_conversation, pam_handle_t **pamh);
int pam_authenticate(pam_handle_t *pamh, int flags);
I think the correct mapping might look something like this:
int pam_start(String service_name, String user, (not sure about
pointer to function yet), PointerByReference pamh);
int pam_authenticate(Pointer pamh, int flags);
Would it be better to use a pointer type for the pam_handle_t *? If
so how is the PointerType class supposed to be used?
Probably. You can then either initialize your pam_handle_t* with
PointerByReference.getValue(), or define a ByReference type whose
getValue() returns your pam_handle_t*.
PointerType is functionally identical to Pointer; it just allows you
to do better static type checking.
As for struct pam_conv, unless you need to actually refer to the
contents, you can just use Pointer for the function pointer and data
pointer.
3 messages in net.java.dev.jna.usersRe: [jna-users] help trying to map li...
