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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
// Copyright 2022 Vector 35 Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! A convenience class for reading binary data
use binaryninjacore_sys::*;
use crate::binaryview::BinaryView;
use crate::Endianness;
use std::io::{Read, Seek, SeekFrom};
pub struct BinaryReader {
handle: *mut BNBinaryReader,
}
impl BinaryReader {
pub fn new(view: &BinaryView, endian: Endianness) -> Self {
let handle = unsafe { BNCreateBinaryReader(view.handle) };
unsafe {
BNSetBinaryReaderEndianness(handle, endian);
}
Self { handle }
}
pub fn endian(&self) -> Endianness {
unsafe { BNGetBinaryReaderEndianness(self.handle) }
}
pub fn set_endian(&self, endian: Endianness) {
unsafe { BNSetBinaryReaderEndianness(self.handle, endian) }
}
pub fn offset(&self) -> u64 {
unsafe { BNGetReaderPosition(self.handle) }
}
pub fn eof(&self) -> bool {
unsafe { BNIsEndOfFile(self.handle) }
}
}
impl Seek for BinaryReader {
/// Seek to the specified position.
///
/// # Errors
/// Seeking relative to [SeekFrom::End] is unsupported and will return an error.
fn seek(&mut self, pos: SeekFrom) -> std::io::Result<u64> {
unsafe {
match pos {
SeekFrom::Current(offset) => BNSeekBinaryReaderRelative(self.handle, offset),
SeekFrom::Start(offset) => BNSeekBinaryReader(self.handle, offset),
_ => {
return Err(std::io::Error::new(
std::io::ErrorKind::Unsupported,
"Cannot seek end of BinaryReader",
))
}
};
}
Ok(self.offset())
}
}
impl Read for BinaryReader {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
let len = buf.len();
let result = unsafe { BNReadData(self.handle, buf.as_mut_ptr() as *mut _, len) };
if !result {
Err(std::io::Error::new(
std::io::ErrorKind::Other,
"Read out of bounds",
))
} else {
Ok(len)
}
}
}
impl Drop for BinaryReader {
fn drop(&mut self) {
unsafe { BNFreeBinaryReader(self.handle) }
}
}
unsafe impl Sync for BinaryReader {}
unsafe impl Send for BinaryReader {}
|
