Mercurial > crates > nonstick

annotate libpam-sys/src/helpers.rs @ 106:49d9e2b5c189

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
An irresponsible mix of implementing libpam-sys and other stuff.
author Paul Fisher <paul@pfish.zone>
date Thu, 26 Jun 2025 22:41:28 -0400
parents
children bb465393621f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
2 //! more annoying memory-twiddling in the PAM API.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
3 //!
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
4 //! Using these is optional but you might find it useful.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
5 use std::error::Error;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
6 use std::marker::{PhantomData, PhantomPinned};
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
7 use std::mem::ManuallyDrop;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
8 use std::ptr::NonNull;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
9 use std::{fmt, slice};
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
10
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
11 /// 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
12 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
13 /// 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
14 /// 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
15 #[derive(Debug, PartialEq)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
16 pub struct TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
17 pub size: usize,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
18 pub max: usize,
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
21 impl Error for TooBigError {}
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
22
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
23 impl fmt::Display for TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
24 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
25 write!(
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
26 f,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
27 "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
28 size = self.size,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
29 max = self.max
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
34 /// A trait wrapping memory management.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
35 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
36 /// 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
37 /// [`OwnedBinaryPayload`]s.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
38 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
39 /// 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
40 /// for [`Vec`].
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
41 pub trait Buffer<T: Default> {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
42 /// 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
43 fn allocate(len: usize) -> Self;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
44
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
45 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
46
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
47 /// 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
48 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
49 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
50 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
51 /// 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
52 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
53
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
54 /// 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
55 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
56
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
57 /// "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
58 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
59 /// Running the operation:
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 /// ```
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
62 /// # use libpam_sys::helpers::Buffer;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
63 /// # 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
64 /// let owner = OwnerType::allocate(bytes);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
65 /// let ptr = owner.into_ptr();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
66 /// 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
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 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
70 /// must be a no-op.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
71 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
72 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
73 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
74 /// 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
75 /// of the given arena.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
76 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
77 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
78
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
79 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
80 fn allocate(bytes: usize) -> Self {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
81 (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
82 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
83
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
84 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
85 Vec::as_ptr(self)
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
88 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
89 debug_assert!(bytes <= self.len());
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
90 Vec::as_mut(self)
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
93 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
94 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
95 // 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
96 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
97 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
98
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
99 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
100 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
101 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
102 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
103
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
104 /// 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
105 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
106 /// 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
107 /// 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
108 /// [`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
109 /// 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
110 #[derive(Debug)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
111 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
112
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
113 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
114 /// Allocates a new OwnedBinaryPayload.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
115 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
116 /// 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
117 /// (more than [`BinaryPayload::MAX_SIZE`]).
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
118 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
119 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
120 size: data.len(),
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
121 max: BinaryPayload::MAX_SIZE,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
122 })?;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
123 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
124 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
125 // SAFETY: We just allocated this exact size.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
126 BinaryPayload::fill(unsafe { &mut buf.as_mut_slice(total_len) }, data_type, data);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
127 Ok(Self(buf))
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
128 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
129
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
130 /// The contents of the buffer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
131 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
132 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
133 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
134
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
135 /// 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
136 pub fn total_bytes(&self) -> usize {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
137 unsafe {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
138 self.0
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
139 .as_ptr()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
140 .cast::<BinaryPayload>()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
141 .as_ref()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
142 .unwrap_unchecked()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
143 .total_bytes()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
144 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
145 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
146
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
147 /// 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
148 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
149 self.0
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
150 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
151
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
152 /// 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
153 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
154 self.0.as_ptr().cast()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
155 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
156
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
157 /// 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
158 /// 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
159 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
160 /// 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
161 /// 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
162 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
163 self.0.into_ptr().cast()
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
164 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
165
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
166 /// 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
167 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
168 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
169 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
170 /// 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
171 /// 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
172 /// 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
173 pub unsafe fn from_ptr(ptr: NonNull<BinaryPayload>) -> Self {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
174 Self(O::from_ptr(ptr.cast(), ptr.as_ref().total_bytes() as usize))
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 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
177
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
178 /// The structure of the "binary message" payload for the `PAM_BINARY_PROMPT`
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
179 /// extension from Linux-PAM.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
180 pub struct BinaryPayload {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
181 /// The total length of the message, including this header,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
182 /// as a u32 in network byte order (big endian).
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
183 total_length: [u8; 4],
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
184 /// A tag used to provide some kind of hint as to what the data is.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
185 /// This is not defined by PAM.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
186 data_type: u8,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
187 /// Where the data itself would start, used as a marker to make this
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
188 /// not [`Unpin`] (since it is effectively an intrusive data structure
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
189 /// pointing to immediately after itself).
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
190 _marker: PhantomData<PhantomPinned>,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
191 }
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 impl BinaryPayload {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
194 /// The most data it's possible to put into a [`BinaryPayload`].
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
195 pub const MAX_SIZE: usize = (u32::MAX - 5) as usize;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
196
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
197 /// Fills in the provided buffer with the given data.
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 /// This uses [`copy_from_slice`](slice::copy_from_slice) internally,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
200 /// so `buf` must be exactly 5 bytes longer than `data`, or this function
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
201 /// will panic.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
202 pub fn fill(buf: &mut [u8], data_type: u8, data: &[u8]) {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
203 let ptr: *mut Self = buf.as_mut_ptr().cast();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
204 // SAFETY: We're given a slice, which always has a nonzero pointer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
205 let me = unsafe { ptr.as_mut().unwrap_unchecked() };
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
206 me.total_length = u32::to_be_bytes(buf.len() as u32);
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
207 me.data_type = data_type;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
208 buf[5..].copy_from_slice(data)
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
211 /// The size of the message contained in the buffer.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
212 fn len(&self) -> usize {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
213 self.total_bytes().saturating_sub(5)
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
216 /// The total storage needed for the message, including header.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
217 pub fn total_bytes(&self) -> usize {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
218 u32::from_be_bytes(self.total_length) as usize
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
221 /// Gets the contents of the BinaryMessage starting at the given location.
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 /// # Safety
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
224 ///
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
225 /// You must pass in a valid pointer, and ensure that the pointer passed in
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
226 /// outlives your borrow lifetime `'a`.
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
227 unsafe fn contents<'a>(ptr: *const Self) -> (u8, &'a [u8]) {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
228 let header: &Self = ptr.as_ref().unwrap_unchecked();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
229 let typ = header.data_type;
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 typ,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
232 slice::from_raw_parts(ptr.cast::<u8>().offset(5), header.len()),
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
233 )
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
234 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
235 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
236
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
237 #[cfg(test)]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
238 mod tests {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
239 use super::*;
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 type VecPayload = OwnedBinaryPayload<Vec<u8>>;
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
242
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
243 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
244 fn test_binary_payload() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
245 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
246 let empty = &[0u8; 5];
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
247
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
248 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
249 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
250 });
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
251 assert_eq!((0x00, &[][..]), unsafe {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
252 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
253 });
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
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
256 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
257 fn test_owned_binary_payload() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
258 let (typ, data) = (
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
259 112,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
260 &[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
261 );
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
262 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
263 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
264 let ptr = payload.into_ptr();
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
265 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
266 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
267 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
268
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
269 #[test]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
270 #[ignore]
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
271 fn test_owned_too_big() {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
272 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
273 assert_eq!(
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
274 TooBigError {
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
275 max: 0xffff_fffa,
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
276 size: 0x1_0000_0001
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
277 },
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
278 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
279 )
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
280 }
49d9e2b5c189 An irresponsible mix of implementing libpam-sys and other stuff.
Paul Fisher <paul@pfish.zone>
parents:
diff changeset
281 }