Mercurial > crates > nonstick

comparison src/pam_ffi.rs @ 66:a674799a5cd3

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Make `PamHandle` and `PamModuleHandle` traits. This creates traits for PAM functionality and pulls the definitions of that functionality out of the original `PamHandle` (renamed to `LibPamHandle`) and into those traits. This supports testing PAM module implementations using mock PAM library implementations. Also uses a better representation of opaque pointers.
author Paul Fisher <paul@pfish.zone>
date Tue, 27 May 2025 14:37:28 -0400
parents bbe84835d6db
children
comparison
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65:8e507c7af9cf 66:a674799a5cd3
1 //! FFI to the PAM library. 1 //! FFI to the PAM library.
2 2
3 use libc::c_char; 3 use libc::c_char;
4 use std::ffi::c_int; 4 use std::ffi::c_int;
5 use std::marker::{PhantomData, PhantomPinned};
6
7 /// An opaque pointer given to us by PAM.
8 #[repr(C)]
9 pub struct Handle {
10 _data: (),
11 _marker: PhantomData<(*mut u8, PhantomPinned)>,
12 }
5 13
6 #[link(name = "pam")] 14 #[link(name = "pam")]
7 extern "C" { 15 extern "C" {
8 pub fn pam_get_data( 16 pub fn pam_get_data(
9 pamh: *const libc::c_void, 17 pamh: *const Handle,
10 module_data_name: *const c_char, 18 module_data_name: *const c_char,
11 data: &mut *const libc::c_void, 19 data: &mut *const libc::c_void,
12 ) -> c_int; 20 ) -> c_int;
13 21
14 pub fn pam_set_data( 22 pub fn pam_set_data(
15 pamh: *mut libc::c_void, 23 pamh: *mut Handle,
16 module_data_name: *const c_char, 24 module_data_name: *const c_char,
17 data: *const libc::c_void, 25 data: *const libc::c_void,
18 cleanup: extern "C" fn( 26 cleanup: extern "C" fn(
19 pamh: *const libc::c_void, 27 pamh: *const libc::c_void,
20 data: *mut libc::c_void, 28 data: *mut libc::c_void,
21 error_status: c_int, 29 error_status: c_int,
22 ), 30 ),
23 ) -> c_int; 31 ) -> c_int;
24 32
25 pub fn pam_get_item( 33 pub fn pam_get_item(
26 pamh: *const libc::c_void, 34 pamh: *const Handle,
27 item_type: c_int, 35 item_type: c_int,
28 item: &mut *const libc::c_void, 36 item: &mut *const libc::c_void,
29 ) -> c_int; 37 ) -> c_int;
30 38
31 pub fn pam_set_item( 39 pub fn pam_set_item(pamh: *mut Handle, item_type: c_int, item: *const libc::c_void) -> c_int;
32 pamh: *mut libc::c_void,
33 item_type: c_int,
34 item: *const libc::c_void,
35 ) -> c_int;
36 40
37 pub fn pam_get_user( 41 pub fn pam_get_user(
38 pamh: *const libc::c_void, 42 pamh: *const Handle,
39 user: &mut *const c_char, 43 user: &mut *const c_char,
40 prompt: *const c_char, 44 prompt: *const c_char,
41 ) -> c_int; 45 ) -> c_int;
42 46
43 pub fn pam_get_authtok( 47 pub fn pam_get_authtok(
44 pamh: *const libc::c_void, 48 pamh: *const Handle,
45 item_type: c_int, 49 item_type: c_int,
46 data: &mut *const c_char, 50 data: &mut *const c_char,
47 prompt: *const c_char, 51 prompt: *const c_char,
48 ) -> c_int; 52 ) -> c_int;
53
54 pub fn pam_end(pamh: *mut Handle, status: c_int) -> c_int;
49 } 55 }