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
|
use chrono::{DateTime, Local};
use nix::{libc::user_regs_struct, unistd::Pid};
use owo_colors::OwoColorize;
use ratatui::{
prelude::{Line, Span, Style},
style::{Color, Modifier},
};
#[cfg(all(target_arch = "x86_64", target_os = "linux"))]
use crate::arch::linux::x86_64::*;
#[cfg(not(all(target_arch = "x86_64", target_os = "linux")))]
use crate::arch::syscall_name;
use crate::trace::read_memory;
#[derive(Clone, Debug)]
/// Structure use to monitor what a register has for (argument: value)
struct RegisterOutput {
/// Value for a register, by default is a number which could be a real value or a memory
/// address
value: String,
/// Argument for a register, eg: "const char *buf"
argument: &'static str,
}
impl RegisterOutput {
fn new(address: u64, argument: &'static str) -> Self {
Self {
value: address.to_string(),
argument,
}
}
}
/// Struct used to manipulate registers data from https://docs.rs/libc/0.2.147/libc/struct.user_regs_struct.html
#[derive(Debug)]
pub struct RegistersData {
timestamp: DateTime<Local>,
orig_rax: u64,
rdi: RegisterOutput,
rsi: RegisterOutput,
rdx: RegisterOutput,
r10: RegisterOutput,
r8: RegisterOutput,
r9: RegisterOutput,
rax: u64,
}
impl RegistersData {
/// Create new `RegistersData` from an `user_regs_struct`'C structure
pub fn new(registers: user_regs_struct) -> RegistersData {
let (rdi, rsi, rdx, r10, r8, r9) = (
RegisterOutput::new(registers.rdi, rdi(registers.orig_rax)),
RegisterOutput::new(registers.rsi, rsi(registers.orig_rax)),
RegisterOutput::new(registers.rdx, rdx(registers.orig_rax)),
RegisterOutput::new(registers.r10, r10(registers.orig_rax)),
RegisterOutput::new(registers.r8, r8(registers.orig_rax)),
RegisterOutput::new(registers.r9, r9(registers.orig_rax)),
);
RegistersData {
timestamp: Local::now(),
orig_rax: registers.orig_rax,
rax: registers.rax,
rdi,
rsi,
rdx,
r10,
r8,
r9,
}
}
/// Get date in ISO 8601 / RFC 3339 date & time string format
pub fn date(&self) -> String {
self.timestamp.format("%+").to_string()
}
/// Return the rax name as syscall name
pub fn name(&self) -> &str {
syscall_name(self.orig_rax)
}
/// Returns a good string which shows the output for a line
pub fn output(&mut self, pid: Pid) -> String {
let mut output = format!("[{}]: ", self.date());
if !self.name().is_empty() {
output.push_str(&format!("{}(", self.name().bold()));
} else {
output.push_str(&format!("{}(", self.orig_rax.yellow().bold()));
}
let mut has_reg = false;
let mut regs = [
&mut self.rdi,
&mut self.rsi,
&mut self.rdx,
&mut self.r10,
&mut self.r8,
&mut self.r9,
];
for reg in &mut regs {
if !reg.argument.is_empty() {
let output_reg = reg.argument.to_owned() + ":";
reg.value = if (output_reg.starts_with("const char *")
|| output_reg.starts_with("char *"))
&& !reg.value.starts_with("\"")
{
read_memory(pid, reg.value.parse::<u64>().unwrap())
} else {
reg.value.to_string()
};
output.push_str(&format!("{} {}, ", output_reg.blue(), reg.value));
has_reg = true;
}
}
if has_reg {
output.remove(output.len() - 1);
output.remove(output.len() - 1);
}
output.push_str(&format!(") = 0x{:x}", self.rax)[..]);
output
}
/// Returns a good line for TUI
pub fn output_ui(&mut self, _pid: Pid) -> Line {
let mut spans: Vec<Span> = vec![];
spans.push(Span::raw(format!("[{}]: ", self.date())));
if !self.name().is_empty() {
spans.push(Span::styled(
format!("{}(", self.name()),
Style::default().add_modifier(Modifier::BOLD),
));
} else {
spans.push(Span::styled(
format!("{}(", self.orig_rax),
Style::default()
.fg(Color::Yellow)
.add_modifier(Modifier::BOLD),
));
}
let mut regs = [
&mut self.rdi,
&mut self.rsi,
&mut self.rdx,
&mut self.r10,
&mut self.r8,
&mut self.r9,
];
for reg in &mut regs {
if !reg.argument.is_empty() {
let output_reg = reg.argument.to_owned() + ":";
spans.push(Span::styled(
format!("{} ", output_reg),
Style::default().fg(Color::Blue),
));
// FIXME: read memory does not work
// reg.value = if (output_reg.starts_with("const char *")
// || output_reg.starts_with("char *"))
// && !reg.value.starts_with("\"")
// {
// read_memory(pid, reg.value.parse::<u64>().unwrap())
// } else {
// reg.value.to_string()
// };
spans.push(Span::styled(format!("{}, ", reg.value), Style::default()));
}
}
spans.push(Span::styled(
format!(") = 0x{:x}", self.rax),
Style::default(),
));
Line::from(spans)
}
}
|
