desox 0.5.1

(incomplete) MIFARE DESFire EV3 APDU bindings.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63

// {{{ Copyright (c) Paul R. Tagliamonte <paultag@gmail.com>, 2026
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE. }}}

use crate::Error;

/// Type of file.
#[derive(Copy, Clone, Debug, PartialEq)]
#[repr(u8)]
pub enum FileType {
    /// "Normal" data file. There's a few other types, but I don't have
    /// the ability to create them yet.
    Data = 0x00,

    /// Data file with a second copy on the EEPROM. This allows writes to be
    /// done and then "commited" while allowing for a rollback at the cost of
    /// 2x the EEPROM data footprint.
    Backup = 0x01,
    //
    // /// Unsigned 32 bit integer value that can be manipulated.
    // Value = 0x02,
    // LinearRecord = 0x03,
    // CyclicRecord = 0x04,
}

impl FileType {
    /// Parse the wire encoded file type as a [FileType]
    ///
    /// 'IoBackendErrorT' is generic here because [Error] requires it, this
    /// function does not conduct any I/O on its own. We will never return an
    /// [Error::IoBackend], so this is purely for sizing/checking.
    pub fn from_u8<IoBackendErrorT>(ft: u8) -> Result<Self, Error<IoBackendErrorT>> {
        Ok(match ft {
            0x00 => Self::Data,
            _ => {
                return Err(Error::UnsupportedFileType);
            }
        })
    }

    /// Return the [FileType] as a serialized u8 value, as seen over the wire.
    pub fn as_u8(&self) -> u8 {
        *self as u8
    }
}

// vim: foldmethod=marker