--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pam-sober/src/ffi.rs	Sun Sep 24 00:57:13 2017 -0600
@@ -0,0 +1,82 @@
+use pam::module::{PamHandleT};
+use pam::constants::{PamFlag, PamResultCode, PAM_SILENT};
+use std::ffi::CStr;
+use std::os::raw::{c_char, c_int};
+
+
+
+fn extract_argv(argc: c_int, argv: *const *const c_char) -> Vec<String> {
+    (0..argc)
+        .map(|o| unsafe {
+            CStr::from_ptr(*argv.offset(o as isize) as *const c_char)
+                .to_string_lossy()
+                .into_owned()
+        })
+        .collect()
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_acct_mgmt(
+	pamh: &PamHandleT,
+	flags: PamFlag,
+	argc: c_int,
+	argv: *const *const c_char,
+) -> PamResultCode {
+	let args = extract_argv(argc, argv);
+	let silent = (flags & PAM_SILENT) != 0;
+	super::acct_mgmt(pamh, args, silent)
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_authenticate(
+	pamh: &PamHandleT,
+	flags: PamFlag,
+	argc: c_int,
+	argv: *const *const c_char,
+) -> PamResultCode {
+	let args = extract_argv(argc, argv);
+	let silent = (flags & PAM_SILENT) != 0;
+	super::sm_authenticate(pamh, args, silent)
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_chauthtok(
+	_: &PamHandleT,
+	_: PamFlag,
+	_: c_int,
+	_: *const *const c_char,
+) -> PamResultCode {
+	PamResultCode::PAM_IGNORE
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_close_session(
+	_: &PamHandleT,
+	_: PamFlag,
+	_: c_int,
+	_: *const *const c_char,
+) -> PamResultCode {
+	PamResultCode::PAM_IGNORE
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_open_session(
+	_: &PamHandleT,
+	_: PamFlag,
+	_: c_int,
+	_: *const *const c_char,
+) -> PamResultCode {
+	PamResultCode::PAM_IGNORE
+}
+
+#[no_mangle]
+pub extern "C" fn pam_sm_setcred(
+	pamh: &PamHandleT,
+	flags: PamFlag,
+	argc: c_int,
+	argv: *const *const c_char,
+) -> PamResultCode {
+	let args = extract_argv(argc, argv);
+	let silent = (flags & PAM_SILENT) != 0;
+	super::sm_setcred(pamh, args, silent)
+}