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
|
// Copyright 2019 Hristo Venev
//
// See COPYING.
#![deny(rust_2018_idioms)]
#[macro_use]
extern crate arrayref;
use std::ffi::{OsStr, OsString};
use std::time::Instant;
use std::{env, fs, io, process, thread};
use toml;
mod builder;
mod config;
mod manager;
mod model;
mod proto;
mod wg;
fn load_config(path: &OsStr) -> io::Result<config::Config> {
let mut data = String::new();
{
use io::Read;
let mut config_file = fs::File::open(path)?;
config_file.read_to_string(&mut data)?;
}
let mut de = toml::Deserializer::new(&data);
serde::Deserialize::deserialize(&mut de)
.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))
}
fn usage(argv0: &str) -> i32 {
eprintln!(
"<1>Invalid arguments. See `{} --help` for more information",
argv0
);
1
}
fn help(argv0: &str) -> i32 {
println!("Usage:");
println!(
" {} IFNAME CONFIG - run daemon on iterface",
argv0
);
println!(" {} --check-source PATH - validate source JSON", argv0);
1
}
fn maybe_get_var(out: &mut Option<impl From<OsString>>, var: impl AsRef<OsStr>) {
let var = var.as_ref();
if let Some(s) = env::var_os(var) {
env::remove_var(var);
*out = Some(s.into());
}
}
fn run_daemon(argv0: String, args: Vec<OsString>) -> i32 {
if args.len() != 2 {
return usage(&argv0);
}
let mut args = args.into_iter();
let ifname = args.next().unwrap();
let config_path = args.next().unwrap();
assert!(args.next().is_none());
let mut config = match load_config(&config_path) {
Ok(c) => c,
Err(e) => {
eprintln!("<1>Failed to load config: {}", e);
process::exit(1);
}
};
maybe_get_var(&mut config.cache_directory, "CACHE_DIRECTORY");
maybe_get_var(&mut config.runtime_directory, "RUNTIME_DIRECTORY");
let mut m = match manager::Manager::new(ifname, config) {
Ok(m) => m,
Err(e) => {
eprintln!("<1>Failed to open device: {}", e);
process::exit(1);
}
};
loop {
let tm = match m.update() {
Ok(t) => t,
Err(e) => {
eprintln!("<1>{}", e);
process::exit(1);
}
};
let now = Instant::now();
if tm > now {
let sleep = tm.duration_since(now);
thread::sleep(sleep);
}
}
}
fn run_check_source(argv0: String, args: Vec<OsString>) -> i32 {
if args.len() != 1 {
usage(&argv0);
}
let mut args = args.into_iter();
let path = args.next().unwrap();
assert!(args.next().is_none());
match manager::load_source(&path) {
Ok(_) => {
println!("OK");
0
}
Err(e) => {
println!("{}", e);
1
}
}
}
fn main() {
let mut iter_args = env::args_os();
let argv0 = iter_args.next().unwrap().to_string_lossy().into_owned();
let mut args = Vec::new();
let mut run: for<'a> fn(String, Vec<OsString>) -> i32 = run_daemon;
let mut parse_args = true;
for arg in iter_args {
if !parse_args || !arg.to_string_lossy().starts_with('-') {
args.push(arg);
} else if arg == "--" {
parse_args = false;
} else if arg == "-h" || arg == "--help" {
process::exit(help(&argv0));
} else if arg == "--check-source" {
run = run_check_source;
parse_args = false;
} else {
usage(&argv0);
}
}
process::exit(run(argv0, args));
}
|
