1 files changed, 92 insertions, 0 deletions
diff --git a/libpam/pam_end.c b/libpam/pam_end.c
new file mode 100644
index 00000000..a2d94085
--- /dev/null
+++ b/libpam/pam_end.c
@@ -0,0 +1,92 @@
+/* pam_end.c */
+
+/*
+ * $Id: pam_end.c,v 1.7 2008/01/28 14:50:21 kukuk Exp $
+ */
+
+#include "pam_private.h"
+
+#include <stdlib.h>
+
+int pam_end(pam_handle_t *pamh, int pam_status)
+{
+    int ret;
+
+    D(("entering pam_end()"));
+
+    IF_NO_PAMH("pam_end", pamh, PAM_SYSTEM_ERR);
+
+    if (__PAM_FROM_MODULE(pamh)) {
+	D(("called from module!?"));
+	return PAM_SYSTEM_ERR;
+    }
+
+#ifdef HAVE_LIBAUDIT
+    _pam_audit_end(pamh, pam_status);
+#endif
+
+    /* first liberate the modules (it is not inconcevible that the
+       modules may need to use the service_name etc. to clean up) */
+
+    _pam_free_data(pamh, pam_status);
+
+    /* now drop all modules */
+
+    if ((ret = _pam_free_handlers(pamh)) != PAM_SUCCESS) {
+	return ret;                 /* error occurred */
+    }
+
+    /* from this point we cannot call the modules any more. Free the remaining
+       memory used by the Linux-PAM interface */
+
+    _pam_drop_env(pamh);                      /* purge the environment */
+
+    _pam_overwrite(pamh->authtok);            /* blank out old token */
+    _pam_drop(pamh->authtok);
+
+    _pam_overwrite(pamh->oldauthtok);         /* blank out old token */
+    _pam_drop(pamh->oldauthtok);
+
+    _pam_overwrite(pamh->former.prompt);
+    _pam_drop(pamh->former.prompt);           /* drop saved prompt */
+
+    _pam_overwrite(pamh->service_name);
+    _pam_drop(pamh->service_name);
+
+    _pam_overwrite(pamh->user);
+    _pam_drop(pamh->user);
+
+    _pam_overwrite(pamh->prompt);
+    _pam_drop(pamh->prompt);                  /* prompt for pam_get_user() */
+
+    _pam_overwrite(pamh->tty);
+    _pam_drop(pamh->tty);
+
+    _pam_overwrite(pamh->rhost);
+    _pam_drop(pamh->rhost);
+
+    _pam_overwrite(pamh->ruser);
+    _pam_drop(pamh->ruser);
+
+    _pam_drop(pamh->pam_conversation);
+    pamh->fail_delay.delay_fn_ptr = NULL;
+
+    _pam_drop(pamh->former.substates);
+
+    _pam_overwrite(pamh->xdisplay);
+    _pam_drop(pamh->xdisplay);
+
+    _pam_overwrite(pamh->xauth.name);
+    _pam_drop(pamh->xauth.name);
+    _pam_overwrite_n(pamh->xauth.data, (unsigned int)pamh->xauth.datalen);
+    _pam_drop(pamh->xauth.data);
+    _pam_overwrite_n((char *)&pamh->xauth, sizeof(pamh->xauth));
+
+    /* and finally liberate the memory for the pam_handle structure */
+
+    _pam_drop(pamh);
+
+    D(("exiting pam_end() successfully"));
+
+    return PAM_SUCCESS;
+}