crates/nonstick: libpam-sys/src/helpers.rs annotate

annotate libpam-sys/src/helpers.rs @ 118:39760dfc9b3b

Detect PAM library based only on system lib; rename minimal lib to XSso. Also formats and assorted other cleanup.

author	Paul Fisher <paul@pfish.zone>
date	Sun, 29 Jun 2025 20:13:03 -0400
parents	20f7712a6857
children	476a22db8639

rev	line source
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	1 //! This module contains a few non-required helpers to deal with some of the
109 bb465393621f Minor cleanup and reorg. Paul Fisher <paul@pfish.zone> parents: 106 diff changeset	2 //! more annoying memory management in the PAM API.
118 39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	3
110 2346fd501b7a Add tests for constants and do other macro niceties. Paul Fisher <paul@pfish.zone> parents: 109 diff changeset	4 use std::error::Error;
118 39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	5 use std::marker::{PhantomData, PhantomPinned};
110 2346fd501b7a Add tests for constants and do other macro niceties. Paul Fisher <paul@pfish.zone> parents: 109 diff changeset	6 use std::mem::ManuallyDrop;
109 bb465393621f Minor cleanup and reorg. Paul Fisher <paul@pfish.zone> parents: 106 diff changeset	7 use std::ptr::NonNull;
118 39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	8 use std::{fmt, slice};
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	9
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	10 /// Error returned when attempting to allocate a buffer that is too big.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	11 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	12 /// This is specifically used in [`OwnedBinaryPayload`] when you try to allocate
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	13 /// a message larger than 2<sup>32</sup> bytes.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	14 #[derive(Debug, PartialEq)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	15 pub struct TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	16 pub size: usize,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	17 pub max: usize,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	18 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	19
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	20 impl Error for TooBigError {}
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	21
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	22 impl fmt::Display for TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	23 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	24 write!(
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	25 f,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	26 "can't allocate a message of {size} bytes (max {max})",
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	27 size = self.size,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	28 max = self.max
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	29 )
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	30 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	31 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	32
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	33 /// A trait wrapping memory management.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	34 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	35 /// This is intended to allow you to bring your own allocator for
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	36 /// [`OwnedBinaryPayload`]s.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	37 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	38 /// For an implementation example, see the implementation of this trait
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	39 /// for [`Vec`].
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	40 pub trait Buffer<T: Default> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	41 /// Allocates a buffer of `len` elements, filled with the default.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	42 fn allocate(len: usize) -> Self;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	43
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	44 fn as_ptr(&self) -> *const T;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	45
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	46 /// Returns a slice view of `size` elements of the given memory.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	47 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	48 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	49 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	50 /// The caller must not request more elements than are allocated.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	51 unsafe fn as_mut_slice(&mut self, len: usize) -> &mut [T];
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	52
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	53 /// Consumes this ownership and returns a pointer to the start of the arena.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	54 fn into_ptr(self) -> NonNull<T>;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	55
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	56 /// "Adopts" the memory at the given pointer, taking it under management.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	57 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	58 /// Running the operation:
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	59 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	60 /// ```
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	61 /// # use libpam_sys::helpers::Buffer;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	62 /// # fn test<T: Default, OwnerType: Buffer<T>>(bytes: usize) {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	63 /// let owner = OwnerType::allocate(bytes);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	64 /// let ptr = owner.into_ptr();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	65 /// let owner = unsafe { OwnerType::from_ptr(ptr, bytes) };
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	66 /// # }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	67 /// ```
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	68 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	69 /// must be a no-op.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	70 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	71 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	72 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	73 /// The pointer must be valid, and the caller must provide the exact size
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	74 /// of the given arena.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	75 unsafe fn from_ptr(ptr: NonNull<T>, bytes: usize) -> Self;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	76 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	77
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	78 impl<T: Default> Buffer<T> for Vec<T> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	79 fn allocate(bytes: usize) -> Self {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	80 (0..bytes).map(\|_\| Default::default()).collect()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	81 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	82
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	83 fn as_ptr(&self) -> *const T {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	84 Vec::as_ptr(self)
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	85 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	86
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	87 unsafe fn as_mut_slice(&mut self, bytes: usize) -> &mut [T] {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	88 debug_assert!(bytes <= self.len());
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	89 Vec::as_mut(self)
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	90 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	91
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	92 fn into_ptr(self) -> NonNull<T> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	93 let mut me = ManuallyDrop::new(self);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	94 // SAFETY: a Vec is guaranteed to have a nonzero pointer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	95 unsafe { NonNull::new_unchecked(me.as_mut_ptr()) }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	96 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	97
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	98 unsafe fn from_ptr(ptr: NonNull<T>, bytes: usize) -> Self {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	99 Vec::from_raw_parts(ptr.as_ptr(), bytes, bytes)
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	100 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	101 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	102
118 39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	103 /// The structure of the "binary message" payload for the `PAM_BINARY_PROMPT`
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	104 /// extension from Linux-PAM.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	105 pub struct BinaryPayload {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	106 /// The total byte size of the message, including this header,
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	107 /// as a u32 in network byte order (big endian).
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	108 pub total_bytes_u32be: [u8; 4],
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	109 /// A tag used to provide some kind of hint as to what the data is.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	110 /// Its meaning is undefined.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	111 pub data_type: u8,
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	112 /// Where the data itself would start, used as a marker to make this
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	113 /// not [`Unpin`] (since it is effectively an intrusive data structure
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	114 /// pointing to immediately after itself).
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	115 pub _marker: PhantomData<PhantomPinned>,
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	116 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	117
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	118 impl BinaryPayload {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	119 /// The most data it's possible to put into a [`BinaryPayload`].
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	120 pub const MAX_SIZE: usize = (u32::MAX - 5) as usize;
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	121
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	122 /// Fills in the provided buffer with the given data.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	123 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	124 /// This uses [`copy_from_slice`](slice::copy_from_slice) internally,
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	125 /// so `buf` must be exactly 5 bytes longer than `data`, or this function
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	126 /// will panic.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	127 pub fn fill(buf: &mut [u8], data_type: u8, data: &[u8]) {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	128 let ptr: *mut Self = buf.as_mut_ptr().cast();
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	129 // SAFETY: We're given a slice, which always has a nonzero pointer.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	130 let me = unsafe { ptr.as_mut().unwrap_unchecked() };
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	131 me.total_bytes_u32be = u32::to_be_bytes(buf.len() as u32);
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	132 me.data_type = data_type;
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	133 buf[5..].copy_from_slice(data)
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	134 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	135
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	136 /// The total storage needed for the message, including header.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	137 pub fn total_bytes(&self) -> usize {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	138 u32::from_be_bytes(self.total_bytes_u32be) as usize
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	139 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	140
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	141 /// Gets the total byte buffer of the BinaryMessage stored at the pointer.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	142 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	143 /// The returned data slice is borrowed from where the pointer points to.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	144 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	145 /// # Safety
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	146 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	147 /// - The pointer must point to a valid `BinaryPayload`.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	148 /// - The borrowed data must not outlive the pointer's validity.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	149 pub unsafe fn buffer_of<'a>(ptr: *const Self) -> &'a [u8] {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	150 let header: &Self = ptr.as_ref().unwrap_unchecked();
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	151 slice::from_raw_parts(ptr.cast(), header.total_bytes().max(5))
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	152 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	153
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	154 /// Gets the contents of the BinaryMessage stored at the given pointer.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	155 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	156 /// The returned data slice is borrowed from where the pointer points to.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	157 /// This is a cheap operation and doesn't do any copying.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	158 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	159 /// We don't take a `&self` reference here because accessing beyond
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	160 /// the range of the `Self` data (i.e., beyond the 5 bytes of `self`)
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	161 /// is undefined behavior. Instead, you have to pass a raw pointer
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	162 /// directly to the data.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	163 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	164 /// # Safety
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	165 ///
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	166 /// - The pointer must point to a valid `BinaryPayload`.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	167 /// - The borrowed data must not outlive the pointer's validity.
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	168 pub unsafe fn contents<'a>(ptr: *const Self) -> (u8, &'a [u8]) {
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	169 let header: &Self = ptr.as_ref().unwrap_unchecked();
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	170 (header.data_type, &Self::buffer_of(ptr)[5..])
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	171 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	172 }
39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	173
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	174 /// A binary message owned by some storage.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	175 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	176 /// This is an owned, memory-managed version of [`BinaryPayload`].
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	177 /// The `O` type manages the memory where the payload lives.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	178 /// [`Vec<u8>`] is one such manager and can be used when ownership
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	179 /// of the data does not need to transit through PAM.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	180 #[derive(Debug)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	181 pub struct OwnedBinaryPayload<Owner: Buffer<u8>>(Owner);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	182
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	183 impl<O: Buffer<u8>> OwnedBinaryPayload<O> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	184 /// Allocates a new OwnedBinaryPayload.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	185 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	186 /// This will return a [`TooBigError`] if you try to allocate too much
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	187 /// (more than [`BinaryPayload::MAX_SIZE`]).
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	188 pub fn new(data_type: u8, data: &[u8]) -> Result<Self, TooBigError> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	189 let total_len: u32 = (data.len() + 5).try_into().map_err(\|_\| TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	190 size: data.len(),
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	191 max: BinaryPayload::MAX_SIZE,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	192 })?;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	193 let total_len = total_len as usize;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	194 let mut buf = O::allocate(total_len);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	195 // SAFETY: We just allocated this exact size.
109 bb465393621f Minor cleanup and reorg. Paul Fisher <paul@pfish.zone> parents: 106 diff changeset	196 BinaryPayload::fill(unsafe { buf.as_mut_slice(total_len) }, data_type, data);
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	197 Ok(Self(buf))
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	198 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	199
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	200 /// The contents of the buffer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	201 pub fn contents(&self) -> (u8, &[u8]) {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	202 unsafe { BinaryPayload::contents(self.as_ptr()) }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	203 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	204
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	205 /// The total bytes needed to store this, including the header.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	206 pub fn total_bytes(&self) -> usize {
118 39760dfc9b3b Detect PAM library based only on system lib; rename minimal lib to XSso. Paul Fisher <paul@pfish.zone> parents: 117 diff changeset	207 unsafe { BinaryPayload::buffer_of(self.0.as_ptr().cast()).len() }
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	208 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	209
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	210 /// Unwraps this into the raw storage backing it.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	211 pub fn into_inner(self) -> O {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	212 self.0
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	213 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	214
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	215 /// Gets a const pointer to the start of the message's buffer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	216 pub fn as_ptr(&self) -> *const BinaryPayload {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	217 self.0.as_ptr().cast()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	218 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	219
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	220 /// Consumes ownership of this message and converts it to a raw pointer
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	221 /// to the start of the message.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	222 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	223 /// To clean this up, you should eventually pass it into [`Self::from_ptr`]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	224 /// with the same `O` ownership type.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	225 pub fn into_ptr(self) -> NonNull<BinaryPayload> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	226 self.0.into_ptr().cast()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	227 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	228
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	229 /// Takes ownership of the given pointer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	230 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	231 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	232 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	233 /// You must provide a valid pointer, allocated by (or equivalent to one
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	234 /// allocated by) [`Self::new`]. For instance, passing a pointer allocated
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	235 /// by `malloc` to `OwnedBinaryPayload::<Vec<u8>>::from_ptr` is not allowed.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	236 pub unsafe fn from_ptr(ptr: NonNull<BinaryPayload>) -> Self {
109 bb465393621f Minor cleanup and reorg. Paul Fisher <paul@pfish.zone> parents: 106 diff changeset	237 Self(O::from_ptr(ptr.cast(), ptr.as_ref().total_bytes()))
106 49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	238 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	239 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	240
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	241 #[cfg(test)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	242 mod tests {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	243 use super::*;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	244
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	245 type VecPayload = OwnedBinaryPayload<Vec<u8>>;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	246
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	247 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	248 fn test_binary_payload() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	249 let simple_message = &[0u8, 0, 0, 16, 0xff, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	250 let empty = &[0u8; 5];
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	251
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	252 assert_eq!((0xff, &[0u8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10][..]), unsafe {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	253 BinaryPayload::contents(simple_message.as_ptr().cast())
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	254 });
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	255 assert_eq!((0x00, &[][..]), unsafe {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	256 BinaryPayload::contents(empty.as_ptr().cast())
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	257 });
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	258 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	259
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	260 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	261 fn test_owned_binary_payload() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	262 let (typ, data) = (
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	263 112,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	264 &[0, 1, 1, 8, 9, 9, 9, 8, 8, 1, 9, 9, 9, 1, 1, 9, 7, 2, 5, 3][..],
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	265 );
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	266 let payload = VecPayload::new(typ, data).unwrap();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	267 assert_eq!((typ, data), payload.contents());
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	268 let ptr = payload.into_ptr();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	269 let payload = unsafe { VecPayload::from_ptr(ptr) };
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	270 assert_eq!((typ, data), payload.contents());
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	271 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	272
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	273 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	274 #[ignore]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	275 fn test_owned_too_big() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	276 let data = vec![0xFFu8; 0x1_0000_0001];
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	277 assert_eq!(
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	278 TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	279 max: 0xffff_fffa,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	280 size: 0x1_0000_0001
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	281 },
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	282 VecPayload::new(5, &data).unwrap_err()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	283 )
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	284 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	285 }

Mercurial > crates > nonstick

annotate libpam-sys/src/helpers.rs @ 118:39760dfc9b3b