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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
// Copyright 2021-2025 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.
use gimli::{EndianRcSlice, Endianity, RunTimeEndian, SectionId};
use binaryninja::{
binary_view::{BinaryView, BinaryViewBase, BinaryViewExt},
settings::Settings,
Endianness,
};
use binaryninja::settings::QueryOptions;
use std::rc::Rc;
//////////////////////
// Dwarf Validation
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("unknown section compression method {0:#x}")]
UnknownCompressionMethod(u32),
#[error("{0}")]
GimliError(#[from] gimli::Error),
#[error("{0}")]
IoError(#[from] std::io::Error),
}
pub fn is_non_dwo_dwarf(view: &BinaryView) -> bool {
view.section_by_name(".debug_info").is_some() || view.section_by_name("__debug_info").is_some()
}
pub fn is_dwo_dwarf(view: &BinaryView) -> bool {
view.section_by_name(".debug_info.dwo").is_some()
}
pub fn is_raw_non_dwo_dwarf(view: &BinaryView) -> bool {
if let Some(raw_view) = view.raw_view() {
raw_view.section_by_name(".debug_info").is_some()
|| view.section_by_name("__debug_info").is_some()
} else {
false
}
}
pub fn is_raw_dwo_dwarf(view: &BinaryView) -> bool {
if let Some(raw_view) = view.raw_view() {
raw_view.section_by_name(".debug_info.dwo").is_some()
} else {
false
}
}
pub fn can_use_debuginfod(view: &BinaryView) -> bool {
let mut query_options = QueryOptions::new_with_view(view);
has_build_id_section(view)
&& Settings::new().get_bool_with_opts("network.enableDebuginfod", &mut query_options)
}
pub fn has_build_id_section(view: &BinaryView) -> bool {
if let Some(raw_view) = view.raw_view() {
return raw_view.section_by_name(".note.gnu.build-id").is_some();
}
false
}
pub fn is_valid(view: &BinaryView) -> bool {
is_non_dwo_dwarf(view)
|| is_raw_non_dwo_dwarf(view)
|| is_dwo_dwarf(view)
|| is_raw_dwo_dwarf(view)
}
pub fn get_endian(view: &BinaryView) -> RunTimeEndian {
match view.default_endianness() {
Endianness::LittleEndian => RunTimeEndian::Little,
Endianness::BigEndian => RunTimeEndian::Big,
}
}
pub fn create_section_reader<'a, Endian: 'a + Endianity>(
section_id: SectionId,
view: &'a BinaryView,
endian: Endian,
dwo_file: bool,
) -> Result<EndianRcSlice<Endian>, Error> {
let section_name = if dwo_file && section_id.dwo_name().is_some() {
section_id.dwo_name().unwrap()
} else {
section_id.name()
};
if let Some(section) = view.section_by_name(section_name) {
// TODO : This is kinda broke....should add rust wrappers for some of this
if let Some(symbol) = view
.symbols()
.iter()
.find(|symbol| symbol.full_name().as_str() == "__elf_section_headers")
{
if let Some(data_var) = view
.data_variables()
.iter()
.find(|var| var.address == symbol.address())
{
// TODO : This should eventually be wrapped by some DataView sorta thingy thing, like how python does it
let data_type = &data_var.ty.contents;
let data = view.read_vec(data_var.address, data_type.width() as usize);
let element_type = data_type.element_type().unwrap().contents;
if let Some(current_section_header) = data
.chunks(element_type.width() as usize)
.find(|section_header| {
if view.address_size() == 4 {
endian.read_u32(§ion_header[16..20]) as u64 == section.start()
} else {
endian.read_u64(§ion_header[24..32]) == section.start()
}
})
{
let section_flags = if view.address_size() == 4 {
endian.read_u32(¤t_section_header[8..12]) as u64
} else {
endian.read_u64(¤t_section_header[8..16])
};
// If the section has the compressed bit set
if (section_flags & 2048) != 0 {
// Get section, trim header, decompress, return
let compressed_header_size = view.address_size() * 3;
let offset = section.start() + compressed_header_size as u64;
let len = section.len() - compressed_header_size;
let ch_type_vec = view.read_vec(section.start(), 4);
let ch_type = endian.read_u32(&ch_type_vec);
if let Ok(buffer) = view.read_buffer(offset, len) {
match ch_type {
1 => {
return Ok(EndianRcSlice::new(
buffer.zlib_decompress().get_data().into(),
endian,
));
}
2 => {
return Ok(EndianRcSlice::new(
zstd::decode_all(buffer.get_data())?.as_slice().into(),
endian,
));
}
x => {
return Err(Error::UnknownCompressionMethod(x));
}
}
}
}
}
}
}
let offset = section.start();
let len = section.len();
if len == 0 {
Ok(EndianRcSlice::new(Rc::from([]), endian))
} else {
Ok(EndianRcSlice::new(
Rc::from(view.read_vec(offset, len).as_slice()),
endian,
))
}
}
// Truncate Mach-O section names to 16 bytes
else if let Some(section) =
view.section_by_name("__".to_string() + §ion_name[1..section_name.len().min(15)])
{
Ok(EndianRcSlice::new(
Rc::from(view.read_vec(section.start(), section.len()).as_slice()),
endian,
))
} else {
Ok(EndianRcSlice::new(Rc::from([]), endian))
}
}
|
