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/*
* These macros are partially based on Linux-PAM's <security/_pam_macros.h>,
* which were organized by Cristian Gafton and I believe are in the public
* domain.
*
* - Solar Designer
*/
#ifndef PAM_PASSWDQC_MACROS_H__
#define PAM_PASSWDQC_MACROS_H__
#include <string.h>
#include <stdlib.h>
#define pwqc_overwrite_string(x) \
do { \
if (x) \
memset((x), 0, strlen(x)); \
} while (0)
#define pwqc_drop_mem(x) \
do { \
if (x) { \
free(x); \
(x) = NULL; \
} \
} while (0)
#define pwqc_drop_pam_reply(/* struct pam_response* */ reply, /* int */ replies) \
do { \
if (reply) { \
int reply_i; \
\
for (reply_i = 0; reply_i < (replies); ++reply_i) { \
pwqc_overwrite_string((reply)[reply_i].resp); \
pwqc_drop_mem((reply)[reply_i].resp); \
} \
pwqc_drop_mem(reply); \
} \
} while (0)
#endif /* PAM_PASSWDQC_MACROS_H__ */
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