go/msteinert-go-pam
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module-transaction: Add support for setting/getting module data

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Module data is data associated with a module handle that is available
for the whole module loading time so it can be used also during
different operations.

We use cgo handles to preserve the life of the go objects so any value
can be associated with a pam transaction.
This commit is contained in:
Marco Trevisan (Treviño)
2023-10-03 14:37:28 +02:00
parent 449b2672b9
commit 7a073f5ba0
6 changed files with 309 additions and 8 deletions
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22
transaction.h
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@@ -1,4 +1,7 @@
#pragma once
#include <security/pam_appl.h>
#include <security/pam_modules.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
@@ -18,6 +21,7 @@
#endif
extern int _go_pam_conv_handler(struct pam_message *, uintptr_t, char **reply);
extern void _go_pam_data_cleanup(pam_handle_t *, uintptr_t, int status);
static inline int cb_pam_conv(int num_msg, PAM_CONST struct pam_message **msg, struct pam_response **resp, void *appdata_ptr)
{
@@ -67,3 +71,21 @@ static inline int check_pam_start_confdir(void)
return 0;
}
static inline void data_cleanup(pam_handle_t *pamh, void *data, int error_status)
{
_go_pam_data_cleanup(pamh, (uintptr_t)data, error_status);
}
static inline int set_data(pam_handle_t *pamh, const char *name, uintptr_t handle)
{
if (handle)
return pam_set_data(pamh, name, (void *)handle, data_cleanup);
return pam_set_data(pamh, name, NULL, NULL);
}
static inline int get_data(pam_handle_t *pamh, const char *name, uintptr_t *out_handle)
{
return pam_get_data(pamh, name, (const void **)out_handle);
}