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
#[macro_use]
extern crate failure;
#[macro_use]
extern crate log;
extern crate reqwest;
pub mod netlify;
use std::io::Read;
use failure::Error;
use structopt::clap::arg_enum;
use structopt::clap::AppSettings;
use structopt::StructOpt;
use netlify::DNSRecord;
#[cfg(test)]
use mockito;
arg_enum! {
#[derive(Debug)]
pub enum IpType {
IPV4,
IPV6,
}
}
#[derive(Debug, StructOpt)]
#[structopt(
about,
setting(AppSettings::ColoredHelp),
setting(AppSettings::ColorAuto)
)]
pub struct Args {
#[structopt(short, long)]
pub domain: String,
#[structopt(short, long, default_value = "www")]
pub subdomain: String,
#[structopt(short, long, possible_values = &IpType::variants(), case_insensitive = true, default_value = "ipv4")]
pub ip_type: IpType,
#[structopt(short, long, env = "NETLIFY_TOKEN")]
pub token: String,
}
fn get_external_ip(ip_type: &IpType) -> Result<String, Error> {
let mut body = String::new();
#[cfg(test)]
let mut resp = match ip_type {
IpType::IPV4 => reqwest::get(&mockito::server_url())?,
IpType::IPV6 => reqwest::get(&mockito::server_url())?,
};
#[cfg(not(test))]
let mut resp = match ip_type {
IpType::IPV4 => reqwest::get("https://v4.ident.me/")?,
IpType::IPV6 => reqwest::get("https://v6.ident.me/")?,
};
debug!("Querying ident.me for external IP...");
if resp.status().is_success() {
resp.read_to_string(&mut body)?;
} else {
warn!("ident.me query failed. Trying ipify.org...");
resp = match ip_type {
IpType::IPV4 => reqwest::get("https://api.ipify.org/")?,
IpType::IPV6 => reqwest::get("https://api6.ipify.org/")?,
};
if resp.status().is_success() {
resp.read_to_string(&mut body)?;
} else {
bail!("Unable to get external IP.");
}
}
Ok(body)
}
pub fn run(args: Args) -> Result<(), Error> {
let ip = get_external_ip(&args.ip_type)?;
let rec = DNSRecord {
hostname: format!("{}.{}", &args.subdomain, &args.domain),
dns_type: match args.ip_type {
IpType::IPV4 => "A".to_string(),
IpType::IPV6 => "AAAA".to_string(),
},
ttl: Some(3600),
value: ip,
id: None,
};
let dns_records = netlify::get_dns_records(&args.domain, &args.token)?;
let (exact, conflicts): (Vec<DNSRecord>, Vec<DNSRecord>) = dns_records
.into_iter()
.filter(|r| match args.ip_type {
IpType::IPV4 => r.dns_type == "A",
IpType::IPV6 => r.dns_type == "AAAA",
})
.filter(|r| {
let v = r.hostname.split('.').collect::<Vec<&str>>();
v.len() == 3 && v[0] == &args.subdomain
})
.partition(|r| r.hostname == rec.hostname && r.value == rec.value);
for r in conflicts {
debug!("Clearing conflicting DNS records for this subdomain.");
netlify::delete_dns_record(&args.domain, &args.token, r)?;
}
if exact.len() == 0 {
netlify::add_dns_record(&args.domain, &args.token, &rec)?;
}
Ok(())
}
#[cfg(test)]
mod test {
use super::*;
use mockito::mock;
#[test]
fn test_get_external_ip() {
let _m = mock("GET", "/")
.with_status(200)
.with_header("content-type", "text/plain")
.with_body("104.132.34.103")
.create();
let ip = get_external_ip(&IpType::IPV4).unwrap();
assert_eq!("104.132.34.103", &ip);
let _m = mock("GET", "/")
.with_status(200)
.with_header("content-type", "text/plain")
.with_body("2620:0:1003:fd00:95e9:369a:53cd:f035")
.create();
let ip = get_external_ip(&IpType::IPV6).unwrap();
assert_eq!("2620:0:1003:fd00:95e9:369a:53cd:f035", &ip);
}
}