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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
use crate::util::config::{Definition, Value};
use git2::cert::{Cert, SshHostKeyType};
use git2::CertificateCheckStatus;
use hmac::Mac;
use std::collections::HashSet;
use std::fmt::Write;
use std::path::{Path, PathBuf};
static BUNDLED_KEYS: &[(&str, &str, &str)] = &[
("github.com", "ssh-ed25519", "AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl"),
("github.com", "ecdsa-sha2-nistp256", "AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg="),
("github.com", "ssh-rsa", "AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ=="),
];
enum KnownHostError {
CheckError(anyhow::Error),
HostKeyNotFound {
hostname: String,
key_type: SshHostKeyType,
remote_host_key: String,
remote_fingerprint: String,
other_hosts: Vec<KnownHost>,
},
HostKeyHasChanged {
hostname: String,
key_type: SshHostKeyType,
old_known_host: KnownHost,
remote_host_key: String,
remote_fingerprint: String,
},
}
impl From<anyhow::Error> for KnownHostError {
fn from(err: anyhow::Error) -> KnownHostError {
KnownHostError::CheckError(err.into())
}
}
#[derive(Clone)]
enum KnownHostLocation {
File { path: PathBuf, lineno: u32 },
Config { definition: Definition },
Bundled,
}
pub fn certificate_check(
cert: &Cert<'_>,
host: &str,
port: Option<u16>,
config_known_hosts: Option<&Vec<Value<String>>>,
diagnostic_home_config: &str,
) -> Result<CertificateCheckStatus, git2::Error> {
let Some(host_key) = cert.as_hostkey() else {
return Ok(CertificateCheckStatus::CertificatePassthrough)
};
let host_maybe_port = match port {
Some(port) if port != 22 => format!("[{host}]:{port}"),
_ => host.to_string(),
};
let err_msg = match check_ssh_known_hosts(host_key, &host_maybe_port, config_known_hosts) {
Ok(()) => {
return Ok(CertificateCheckStatus::CertificateOk);
}
Err(KnownHostError::CheckError(e)) => {
format!("error: failed to validate host key:\n{:#}", e)
}
Err(KnownHostError::HostKeyNotFound {
hostname,
key_type,
remote_host_key,
remote_fingerprint,
other_hosts,
}) => {
if port.is_some()
&& !matches!(port, Some(22))
&& check_ssh_known_hosts(host_key, host, config_known_hosts).is_ok()
{
return Ok(CertificateCheckStatus::CertificateOk);
}
let key_type_short_name = key_type.short_name();
let key_type_name = key_type.name();
let known_hosts_location = user_known_host_location_to_add(diagnostic_home_config);
let other_hosts_message = if other_hosts.is_empty() {
String::new()
} else {
let mut msg = String::from(
"Note: This host key was found, \
but is associated with a different host:\n",
);
for known_host in other_hosts {
let loc = match known_host.location {
KnownHostLocation::File { path, lineno } => {
format!("{} line {lineno}", path.display())
}
KnownHostLocation::Config { definition } => {
format!("config value from {definition}")
}
KnownHostLocation::Bundled => format!("bundled with cargo"),
};
write!(msg, " {loc}: {}\n", known_host.patterns).unwrap();
}
msg
};
format!("error: unknown SSH host key\n\
The SSH host key for `{hostname}` is not known and cannot be validated.\n\
\n\
To resolve this issue, add the host key to {known_hosts_location}\n\
\n\
The key to add is:\n\
\n\
{hostname} {key_type_name} {remote_host_key}\n\
\n\
The {key_type_short_name} key fingerprint is: SHA256:{remote_fingerprint}\n\
This fingerprint should be validated with the server administrator that it is correct.\n\
{other_hosts_message}\n\
See https://doc.rust-lang.org/stable/cargo/appendix/git-authentication.html#ssh-known-hosts \
for more information.\n\
")
}
Err(KnownHostError::HostKeyHasChanged {
hostname,
key_type,
old_known_host,
remote_host_key,
remote_fingerprint,
}) => {
let key_type_short_name = key_type.short_name();
let key_type_name = key_type.name();
let known_hosts_location = user_known_host_location_to_add(diagnostic_home_config);
let old_key_resolution = match old_known_host.location {
KnownHostLocation::File { path, lineno } => {
let old_key_location = path.display();
format!(
"removing the old {key_type_name} key for `{hostname}` \
located at {old_key_location} line {lineno}, \
and adding the new key to {known_hosts_location}",
)
}
KnownHostLocation::Config { definition } => {
format!(
"removing the old {key_type_name} key for `{hostname}` \
loaded from Cargo's config at {definition}, \
and adding the new key to {known_hosts_location}"
)
}
KnownHostLocation::Bundled => {
format!(
"adding the new key to {known_hosts_location}\n\
The current host key is bundled as part of Cargo."
)
}
};
format!("error: SSH host key has changed for `{hostname}`\n\
*********************************\n\
* WARNING: HOST KEY HAS CHANGED *\n\
*********************************\n\
This may be caused by a man-in-the-middle attack, or the \
server may have changed its host key.\n\
\n\
The {key_type_short_name} fingerprint for the key from the remote host is:\n\
SHA256:{remote_fingerprint}\n\
\n\
You are strongly encouraged to contact the server \
administrator for `{hostname}` to verify that this new key is \
correct.\n\
\n\
If you can verify that the server has a new key, you can \
resolve this error by {old_key_resolution}\n\
\n\
The key provided by the remote host is:\n\
\n\
{hostname} {key_type_name} {remote_host_key}\n\
\n\
See https://doc.rust-lang.org/stable/cargo/appendix/git-authentication.html#ssh-known-hosts \
for more information.\n\
")
}
};
Err(git2::Error::new(
git2::ErrorCode::GenericError,
git2::ErrorClass::Callback,
err_msg,
))
}
fn check_ssh_known_hosts(
cert_host_key: &git2::cert::CertHostkey<'_>,
host: &str,
config_known_hosts: Option<&Vec<Value<String>>>,
) -> Result<(), KnownHostError> {
let Some(remote_host_key) = cert_host_key.hostkey() else {
return Err(anyhow::format_err!("remote host key is not available").into());
};
let remote_key_type = cert_host_key.hostkey_type().unwrap();
let mut known_hosts = Vec::new();
for path in known_host_files() {
if !path.exists() {
continue;
}
let hosts = load_hostfile(&path)?;
known_hosts.extend(hosts);
}
if let Some(config_known_hosts) = config_known_hosts {
for line_value in config_known_hosts {
let location = KnownHostLocation::Config {
definition: line_value.definition.clone(),
};
match parse_known_hosts_line(&line_value.val, location) {
Some(known_host) => known_hosts.push(known_host),
None => log::warn!(
"failed to parse known host {} from {}",
line_value.val,
line_value.definition
),
}
}
}
let configured_hosts: HashSet<_> = known_hosts
.iter()
.flat_map(|known_host| {
known_host
.patterns
.split(',')
.map(|pattern| pattern.to_lowercase())
})
.collect();
for (patterns, key_type, key) in BUNDLED_KEYS {
if !configured_hosts.contains(*patterns) {
let key = base64::decode(key).unwrap();
known_hosts.push(KnownHost {
location: KnownHostLocation::Bundled,
patterns: patterns.to_string(),
key_type: key_type.to_string(),
key,
});
}
}
check_ssh_known_hosts_loaded(&known_hosts, host, remote_key_type, remote_host_key)
}
fn check_ssh_known_hosts_loaded(
known_hosts: &[KnownHost],
host: &str,
remote_key_type: SshHostKeyType,
remote_host_key: &[u8],
) -> Result<(), KnownHostError> {
let mut changed_key = None;
let mut other_hosts = Vec::new();
for known_host in known_hosts {
if known_host.key_type != remote_key_type.name() {
continue;
}
let key_matches = known_host.key == remote_host_key;
if !known_host.host_matches(host) {
if key_matches {
other_hosts.push(known_host.clone());
}
continue;
}
if key_matches {
return Ok(());
}
changed_key = Some(known_host.clone());
}
let mut remote_fingerprint = cargo_util::Sha256::new();
remote_fingerprint.update(remote_host_key);
let remote_fingerprint =
base64::encode_config(remote_fingerprint.finish(), base64::STANDARD_NO_PAD);
let remote_host_key = base64::encode(remote_host_key);
match changed_key {
Some(old_known_host) => Err(KnownHostError::HostKeyHasChanged {
hostname: host.to_string(),
key_type: remote_key_type,
old_known_host,
remote_host_key,
remote_fingerprint,
}),
None => Err(KnownHostError::HostKeyNotFound {
hostname: host.to_string(),
key_type: remote_key_type,
remote_host_key,
remote_fingerprint,
other_hosts,
}),
}
}
fn known_host_files() -> Vec<PathBuf> {
let mut result = Vec::new();
if std::env::var_os("__CARGO_TEST_DISABLE_GLOBAL_KNOWN_HOST").is_some() {
} else if cfg!(unix) {
result.push(PathBuf::from("/etc/ssh/ssh_known_hosts"));
} else if cfg!(windows) {
if let Some(progdata) = std::env::var_os("ProgramData") {
let mut progdata = PathBuf::from(progdata);
progdata.push("ssh");
progdata.push("ssh_known_hosts");
result.push(progdata)
}
}
result.extend(user_known_host_location());
result
}
fn user_known_host_location() -> Option<PathBuf> {
home::home_dir().map(|mut home| {
home.push(".ssh");
home.push("known_hosts");
home
})
}
fn user_known_host_location_to_add(diagnostic_home_config: &str) -> String {
let user = user_known_host_location();
let openssh_loc = match &user {
Some(path) => path.to_str().expect("utf-8 home"),
None => "~/.ssh/known_hosts",
};
format!(
"the `net.ssh.known-hosts` array in your Cargo configuration \
(such as {diagnostic_home_config}) \
or in your OpenSSH known_hosts file at {openssh_loc}"
)
}
const HASH_HOSTNAME_PREFIX: &str = "|1|";
#[derive(Clone)]
struct KnownHost {
location: KnownHostLocation,
patterns: String,
key_type: String,
key: Vec<u8>,
}
impl KnownHost {
fn host_matches(&self, host: &str) -> bool {
let mut match_found = false;
let host = host.to_lowercase();
if let Some(hashed) = self.patterns.strip_prefix(HASH_HOSTNAME_PREFIX) {
return hashed_hostname_matches(&host, hashed);
}
for pattern in self.patterns.split(',') {
let pattern = pattern.to_lowercase();
if let Some(pattern) = pattern.strip_prefix('!') {
if pattern == host {
return false;
}
} else {
match_found |= pattern == host;
}
}
match_found
}
}
fn hashed_hostname_matches(host: &str, hashed: &str) -> bool {
let Some((b64_salt, b64_host)) = hashed.split_once('|') else { return false; };
let Ok(salt) = base64::decode(b64_salt) else { return false; };
let Ok(hashed_host) = base64::decode(b64_host) else { return false; };
let Ok(mut mac) = hmac::Hmac::<sha1::Sha1>::new_from_slice(&salt) else { return false; };
mac.update(host.as_bytes());
let result = mac.finalize().into_bytes();
hashed_host == &result[..]
}
fn load_hostfile(path: &Path) -> Result<Vec<KnownHost>, anyhow::Error> {
let contents = cargo_util::paths::read(path)?;
Ok(load_hostfile_contents(path, &contents))
}
fn load_hostfile_contents(path: &Path, contents: &str) -> Vec<KnownHost> {
let entries = contents
.lines()
.enumerate()
.filter_map(|(lineno, line)| {
let location = KnownHostLocation::File {
path: path.to_path_buf(),
lineno: lineno as u32 + 1,
};
parse_known_hosts_line(line, location)
})
.collect();
entries
}
fn parse_known_hosts_line(line: &str, location: KnownHostLocation) -> Option<KnownHost> {
let line = line.trim();
if line.is_empty() || line.starts_with(['#', '@']) {
return None;
}
let mut parts = line.split([' ', '\t']).filter(|s| !s.is_empty());
let patterns = parts.next()?;
let key_type = parts.next()?;
let key = parts.next().map(base64::decode)?.ok()?;
Some(KnownHost {
location,
patterns: patterns.to_string(),
key_type: key_type.to_string(),
key,
})
}
#[cfg(test)]
mod tests {
use super::*;
static COMMON_CONTENTS: &str = r#"
# Comments allowed at start of line
example.com,rust-lang.org ssh-rsa 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 eric@host
Example.net ssh-dss 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 eric@host
[example.net]:2222 ssh-dss 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 eric@host
nistp256.example.org ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJ4iYGCcJrUIfrHfzlsv8e8kaF36qpcUpe3VNAKVCZX/BDptIdlEe8u8vKNRTPgUO9jqS0+tjTcPiQd8/8I9qng= eric@host
nistp384.example.org ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBNuGT3TqMz2rcwOt2ZqkiNqq7dvWPE66W2qPCoZsh0pQhVU3BnhKIc6nEr6+Wts0Z3jdF3QWwxbbTjbVTVhdr8fMCFhDCWiQFm9xLerYPKnu9qHvx9K87/fjc5+0pu4hLA== eric@host
nistp521.example.org ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAD35HH6OsK4DN75BrKipVj/GvZaUzjPNa1F8wMjUdPB1JlVcUfgzJjWSxrhmaNN3u0soiZw8WNRFINsGPCw5E7DywF1689WcIj2Ye2rcy99je15FknScTzBBD04JgIyOI50mCUaPCBoF14vFlN6BmO00cFo+yzy5N8GuQ2sx9kr21xmFQ== eric@host
# Revoked not yet supported.
@revoked * ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKtQsi+KPYispwm2rkMidQf30fG1Niy8XNkvASfePoca eric@host
example.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAWkjI6XT2SZh3xNk5NhisA3o3sGzWR+VAKMSqHtI0aY eric@host
192.168.42.12 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKVYJpa0yUGaNk0NXQTPWa0tHjqRpx+7hl2diReH6DtR eric@host
|1|QxzZoTXIWLhUsuHAXjuDMIV3FjQ=|M6NCOIkjiWdCWqkh5+Q+/uFLGjs= ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIHgN3O21U4LWtP5OzjTzPnUnSDmCNDvyvlaj6Hi65JC eric@host
# Negation isn't terribly useful without globs.
neg.example.com,!neg.example.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOXfUnaAHTlo1Qi//rNk26OcmHikmkns1Z6WW/UuuS3K eric@host
"#;
#[test]
fn known_hosts_parse() {
let kh_path = Path::new("/home/abc/.known_hosts");
let khs = load_hostfile_contents(kh_path, COMMON_CONTENTS);
assert_eq!(khs.len(), 10);
match &khs[0].location {
KnownHostLocation::File { path, lineno } => {
assert_eq!(path, kh_path);
assert_eq!(*lineno, 4);
}
_ => panic!("unexpected"),
}
assert_eq!(khs[0].patterns, "example.com,rust-lang.org");
assert_eq!(khs[0].key_type, "ssh-rsa");
assert_eq!(khs[0].key.len(), 407);
assert_eq!(&khs[0].key[..30], b"\x00\x00\x00\x07ssh-rsa\x00\x00\x00\x03\x01\x00\x01\x00\x00\x01\x81\x00\xb935\x88\xa5\x9c)");
match &khs[1].location {
KnownHostLocation::File { path, lineno } => {
assert_eq!(path, kh_path);
assert_eq!(*lineno, 5);
}
_ => panic!("unexpected"),
}
assert_eq!(khs[2].patterns, "[example.net]:2222");
assert_eq!(khs[3].patterns, "nistp256.example.org");
assert_eq!(khs[7].patterns, "192.168.42.12");
}
#[test]
fn host_matches() {
let kh_path = Path::new("/home/abc/.known_hosts");
let khs = load_hostfile_contents(kh_path, COMMON_CONTENTS);
assert!(khs[0].host_matches("example.com"));
assert!(khs[0].host_matches("rust-lang.org"));
assert!(khs[0].host_matches("EXAMPLE.COM"));
assert!(khs[1].host_matches("example.net"));
assert!(!khs[0].host_matches("example.net"));
assert!(khs[2].host_matches("[example.net]:2222"));
assert!(!khs[2].host_matches("example.net"));
assert!(khs[8].host_matches("hashed.example.com"));
assert!(!khs[8].host_matches("example.com"));
assert!(!khs[9].host_matches("neg.example.com"));
}
#[test]
fn check_match() {
let kh_path = Path::new("/home/abc/.known_hosts");
let khs = load_hostfile_contents(kh_path, COMMON_CONTENTS);
assert!(check_ssh_known_hosts_loaded(
&khs,
"example.com",
SshHostKeyType::Rsa,
&khs[0].key
)
.is_ok());
match check_ssh_known_hosts_loaded(&khs, "example.com", SshHostKeyType::Dss, &khs[0].key) {
Err(KnownHostError::HostKeyNotFound {
hostname,
remote_fingerprint,
other_hosts,
..
}) => {
assert_eq!(
remote_fingerprint,
"yn+pONDn0EcgdOCVptgB4RZd/wqmsVKrPnQMLtrvhw8"
);
assert_eq!(hostname, "example.com");
assert_eq!(other_hosts.len(), 0);
}
_ => panic!("unexpected"),
}
match check_ssh_known_hosts_loaded(
&khs,
"foo.example.com",
SshHostKeyType::Rsa,
&khs[0].key,
) {
Err(KnownHostError::HostKeyNotFound { other_hosts, .. }) => {
assert_eq!(other_hosts.len(), 1);
assert_eq!(other_hosts[0].patterns, "example.com,rust-lang.org");
}
_ => panic!("unexpected"),
}
let mut modified_key = khs[0].key.clone();
modified_key[0] = 1;
match check_ssh_known_hosts_loaded(&khs, "example.com", SshHostKeyType::Rsa, &modified_key)
{
Err(KnownHostError::HostKeyHasChanged { old_known_host, .. }) => {
assert!(matches!(
old_known_host.location,
KnownHostLocation::File { lineno: 4, .. }
));
}
_ => panic!("unexpected"),
}
}
}