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
//! Implements a usable view of Tor network parameters.
//!
//! The Tor consensus document contains a number of 'network
//! parameters', which are integer-valued items voted on by the
//! directory authorities.  They are used to tune the behavior of
//! numerous aspects of the network.
//! A set of Tor network parameters
//!
//! The Tor consensus document contains a number of 'network
//! parameters', which are integer-valued items voted on by the
//! directory authorities.  These parameters are used to tune the
//! behavior of numerous aspects of the network.
//!
//! This type differs from
//! [`NetParams`](tor_netdoc::doc::netstatus::NetParams) in that it
//! only exposes a set of parameters recognized by arti.  In return
//! for this restriction, it makes sure that the values it gives are
//! in range, and provides default values for any parameters that are
//! missing.

use tor_units::{
    BoundedInt32, IntegerDays, IntegerMilliseconds, IntegerSeconds, Percentage, SendMeVersion,
};

/// An object that can be constructed from an i32, with saturating semantics.
pub trait FromInt32Saturating {
    /// Construct an instance of this object from `val`.
    ///
    /// If `val` is too low, treat it as the lowest value that would be
    /// valid.  If `val` is too high, treat it as the highest value that
    /// would be valid.
    fn from_saturating(val: i32) -> Self;
}

impl FromInt32Saturating for i32 {
    fn from_saturating(val: i32) -> Self {
        val
    }
}
impl<const L: i32, const H: i32> FromInt32Saturating for BoundedInt32<L, H> {
    fn from_saturating(val: i32) -> Self {
        Self::saturating_new(val)
    }
}
impl<T: Copy + Into<f64> + FromInt32Saturating> FromInt32Saturating for Percentage<T> {
    fn from_saturating(val: i32) -> Self {
        Self::new(T::from_saturating(val))
    }
}
impl<T: FromInt32Saturating + TryInto<u64>> FromInt32Saturating for IntegerMilliseconds<T> {
    fn from_saturating(val: i32) -> Self {
        Self::new(T::from_saturating(val))
    }
}
impl<T: FromInt32Saturating + TryInto<u64>> FromInt32Saturating for IntegerSeconds<T> {
    fn from_saturating(val: i32) -> Self {
        Self::new(T::from_saturating(val))
    }
}
impl<T: FromInt32Saturating + TryInto<u64>> FromInt32Saturating for IntegerDays<T> {
    fn from_saturating(val: i32) -> Self {
        Self::new(T::from_saturating(val))
    }
}
impl FromInt32Saturating for SendMeVersion {
    fn from_saturating(val: i32) -> Self {
        Self::new(val.clamp(0, 255) as u8)
    }
}

/// A macro to help us declare the net parameters object.  It lets us
/// put the information about each parameter in just one place, even
/// though it will later get split between the struct declaration, the
/// Default implementation, and the implementation of
/// `saturating_update_override`.
macro_rules! declare_net_parameters {
    {
        $(#[$s_meta:meta])* $s_v:vis struct $s_name:ident {
            $(
                $(#[$p_meta:meta])* $p_v:vis
                    $p_name:ident : $p_type:ty
                    = ($p_dflt:expr) from $p_string:literal
            ),*
            $( , )?
        }
    } =>
    {
        $(#[$s_meta])* $s_v struct $s_name {
            $(
                $(#[$p_meta])* $p_v $p_name : $p_type
            ),*
        }

        impl $s_name {
            /// Try to construct an instance of with its default values.
            ///
            /// (This should always succeed, unless one of the default values
            /// is out-of-bounds for the type.)
            fn default_values() -> Result<Self, tor_units::Error> {
                Ok(Self {
                    $( $p_name : $p_dflt.try_into()? ),*
                })
            }
            /// Replace the current value for the parameter identified in the
            /// consensus with `key` with a new value `val`.
            ///
            /// Uses saturating semantics if the new value is out-of-range.
            ///
            /// Returns true if the key was recognized, and false otherwise.
            fn set_saturating(&mut self, key: &str, val: i32) -> bool {
                match key {
                    $( $p_string => self.$p_name = {
                        type T = $p_type;
                        T::from_saturating(val)
                    }, )*
                    _ => return false,
                }
                true
            }
        }
    }
}

declare_net_parameters! {

/// This structure holds recognized configuration parameters. All values are type-safe,
/// and where applicable clamped to be within range.
#[derive(Clone, Debug)]
#[non_exhaustive]
pub struct NetParameters {
    /// A weighting factor for bandwidth calculations
    pub bw_weight_scale: BoundedInt32<1, { i32::MAX }> = (10_000)
        from "bwweightscale",
    /// If true, do not attempt to learn circuit-build timeouts at all.
    pub cbt_learning_disabled: BoundedInt32<0, 1> = (0)
        from "cbtdisabled",
    /// Number of histograms bins to consider when estimating Xm for a
    /// Pareto-based circuit timeout estimator.
    pub cbt_num_xm_modes: BoundedInt32<1, 20> = (10)
        from "cbtnummodes",
    /// How many recent circuit success/timeout statuses do we remember
    /// when trying to tell if our circuit timeouts are too low?
    pub cbt_success_count: BoundedInt32<3, 1_000> = (20)
        from "cbtrecentcount",
    /// How many timeouts (in the last `cbt_success_count` observations)
    /// indicates that our circuit timeouts are too low?
    pub cbt_max_timeouts: BoundedInt32<3, 10_000> = (18)
        from "cbtmaxtimeouts",
    /// Smallest number of circuit build times we have to view in order to use
    /// our Pareto-based circuit timeout estimator.
    pub cbt_min_circs_for_estimate: BoundedInt32<1, 10_000> = (100)
        from "cbtmincircs",
    /// Quantile to use when determining the correct circuit timeout value
    /// with our Pareto estimator.
    ///
    /// (We continue building circuits after this timeout, but only
    /// for build-time measurement purposes.)
    pub cbt_timeout_quantile: Percentage<BoundedInt32<10, 99>> = (80)
        from "cbtquantile",
    /// Quantile to use when determining when to abandon circuits completely
    /// with our Pareto estimator.
    pub cbt_abandon_quantile: Percentage<BoundedInt32<10, 99>> = (99)
        from "cbtclosequantile",
    /// Lowest permissible timeout value for Pareto timeout estimator.
    pub cbt_min_timeout: IntegerMilliseconds<BoundedInt32<10, { i32::MAX }>> = (10)
        from "cbtmintimeout",
    /// Timeout value to use for our Pareto timeout estimator when we have
    /// no initial estimate.
    pub cbt_initial_timeout: IntegerMilliseconds<BoundedInt32<10, { i32::MAX }>> = (60_000)
        from "cbtinitialtimeout",
    /// When we don't have a good build-time estimate yet, how long
    /// (in seconds) do we wait between trying to launch build-time
    /// testing circuits through the network?
    pub cbt_testing_delay: IntegerSeconds<BoundedInt32<1, { i32::MAX }>> = (10)
        from "cbttestfreq",
    /// How many circuits can be open before we will no longer
    /// consider launching testing circuits to learn average build
    /// times?
    pub cbt_max_open_circuits_for_testing: BoundedInt32<0, 14> = (10)
        from "cbtmaxopencircs",

    /// The maximum cell window size?
    pub circuit_window: BoundedInt32<100, 1000> = (1_000)
        from "circwindow",
    /// The decay parameter for circuit priority
    pub circuit_priority_half_life: IntegerMilliseconds<BoundedInt32<1, { i32::MAX }>> = (30_000)
        from "CircuitPriorityHalflifeMsec",
    /// Whether to perform circuit extensions by Ed25519 ID
    pub extend_by_ed25519_id: BoundedInt32<0, 1> = (0)
        from "ExtendByEd25519ID",

    /// If we have excluded so many possible guards that the
    /// available fraction is below this threshold, we should use a different
    /// guard sample.
    pub guard_meaningful_restriction: Percentage<BoundedInt32<1,100>> = (20)
        from "guard-meaningful-restriction-percent",

    /// We should warn the user if they have excluded so many guards
    /// that the available fraction is below this threshold.
    pub guard_extreme_restriction: Percentage<BoundedInt32<1,100>> = (1)
        from "guard-extreme-restriction-percent",

    /// How long should we keep an unconfirmed guard (one we have not
    /// contacted) before removing it from the guard sample?
    pub guard_lifetime_unconfirmed: IntegerDays<BoundedInt32<1, 3650>> = (120)
        from "guard-lifetime-days",

    /// How long should we keep a _confirmed_ guard (one we have contacted)
    /// before removing it from the guard sample?
    pub guard_lifetime_confirmed: IntegerDays<BoundedInt32<1, 3650>> = (60)
        from "guard-confirmed-min-lifetime-days",

    /// If all circuits have failed for this interval, then treat the internet
    /// as "probably down", and treat any guard failures in that interval
    /// as unproven.
    pub guard_internet_likely_down: IntegerSeconds<BoundedInt32<1, {i32::MAX}>> = (600)
        from "guard-internet-likely-down-interval",
    /// Largest number of guards that a client should try to maintain in
    /// a sample of possible guards.
    pub guard_max_sample_size: BoundedInt32<1, {i32::MAX}> = (60)
        from "guard-max-sample-size",
    /// Largest fraction of guard bandwidth on the network that a client
    /// should try to remain in a sample of possible guards.
    pub guard_max_sample_threshold: Percentage<BoundedInt32<1,100>> = (20)
        from "guard-max-sample-threshold",

    /// If the client ever has fewer than this many guards in their sample,
    /// after filtering out unusable guards, they should try to add more guards
    /// to the sample (if allowed).
    pub guard_filtered_min_sample_size: BoundedInt32<1,{i32::MAX}> = (20)
        from "guard-min-filtered-sample-size",

    /// The number of confirmed guards that the client should treat as
    /// "primary guards".
    pub guard_n_primary: BoundedInt32<1,{i32::MAX}> = (3)
        from "guard-n-primary-guards",
    /// The number of primary guards that the client should use in parallel.
    /// Other primary guards won't get used unless earlier ones are down.
    pub guard_use_parallelism: BoundedInt32<1, {i32::MAX}> = (1)
        from "guard-n-primary-guards-to-use",
    /// The number of primary guards that the client should use in
    /// parallel.  Other primary directory guards won't get used
    /// unless earlier ones are down.
    pub guard_dir_use_parallelism: BoundedInt32<1, {i32::MAX}> = (3)
        from "guard-n-primary-dir-guards-to-use",

    /// When trying to confirm nonprimary guards, if a guard doesn't
    /// answer for more than this long in seconds, treat any lower-
    /// priority guards as possibly usable.
    pub guard_nonprimary_connect_timeout: IntegerSeconds<BoundedInt32<1,{i32::MAX}>> = (15)
        from "guard-nonprimary-guard-connect-timeout",
    /// When trying to confirm nonprimary guards, if a guard doesn't
    /// answer for more than _this_ long in seconds, treat it as down.
    pub guard_nonprimary_idle_timeout: IntegerSeconds<BoundedInt32<1,{i32::MAX}>> = (600)
        from "guard-nonprimary-guard-idle-timeout",
    /// If a guard has been unlisted in the consensus for at least this
    /// long, remove it from the consensus.
    pub guard_remove_unlisted_after: IntegerDays<BoundedInt32<1,3650>> = (20)
        from "guard-remove-unlisted-guards-after-days",


    /// The minimum threshold for circuit patch construction
    pub min_circuit_path_threshold: Percentage<BoundedInt32<25, 95>> = (60)
        from "min_paths_for_circs_pct",

    /// The minimum sendme version to accept.
    pub sendme_accept_min_version: SendMeVersion = (0)
        from "sendme_accept_min_version",
    /// The minimum sendme version to transmit.
    pub sendme_emit_min_version: SendMeVersion = (0)
        from "sendme_emit_min_version",

    /// How long should never-used client circuits stay available,
    /// in the steady state?
    pub unused_client_circ_timeout: IntegerSeconds<BoundedInt32<60, 86_400>> = (30*60)
        from "nf_conntimeout_clients",
    /// When we're learning circuit timeouts, how long should never-used client
    /// circuits stay available?
    pub unused_client_circ_timeout_while_learning_cbt: IntegerSeconds<BoundedInt32<10, 60_000>> = (3*60)
        from "cbtlearntimeout",

}

}

impl Default for NetParameters {
    fn default() -> Self {
        NetParameters::default_values().expect("Default parameters were out-of-bounds")
    }
}

impl NetParameters {
    /// Construct a new NetParameters from a given list of key=value parameters.
    ///
    /// Unrecognized parameters are ignored.
    pub fn from_map(p: &tor_netdoc::doc::netstatus::NetParams<i32>) -> Self {
        let mut params = NetParameters::default();
        let _ = params.saturating_update(p.iter());
        params
    }

    /// Replace a list of parameters, using the logic of
    /// `set_saturating`.
    ///
    /// Return a vector of the parameter names we didn't recognize.
    pub(crate) fn saturating_update<'a, S>(
        &mut self,
        iter: impl Iterator<Item = (S, &'a i32)>,
    ) -> Vec<S>
    where
        S: AsRef<str>,
    {
        let mut unrecognized = Vec::new();
        for (k, v) in iter {
            if !self.set_saturating(k.as_ref(), *v) {
                unrecognized.push(k);
            }
        }
        unrecognized
    }
}

#[cfg(test)]
#[allow(clippy::many_single_char_names)]
#[allow(clippy::unwrap_used)]
#[allow(clippy::cognitive_complexity)]
mod test {
    use super::*;
    use std::string::String;

    #[test]
    fn empty_list() {
        let mut x = NetParameters::default();
        let y = Vec::<(&String, &i32)>::new();
        let u = x.saturating_update(y.into_iter());
        assert!(u.is_empty());
    }

    #[test]
    fn unknown_parameter() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("This_is_not_a_real_key");
        let v = &456;
        y.push((k, v));
        let u = x.saturating_update(y.into_iter());
        assert_eq!(u, vec![&String::from("This_is_not_a_real_key")]);
    }

    // #[test]
    // fn duplicate_parameter() {}

    #[test]
    fn single_good_parameter() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("min_paths_for_circs_pct");
        let v = &54;
        y.push((k, v));
        let z = x.saturating_update(y.into_iter());
        assert!(z.is_empty());
        assert_eq!(x.min_circuit_path_threshold.as_percent().get(), 54);
    }

    #[test]
    fn multiple_good_parameters() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("min_paths_for_circs_pct");
        let v = &54;
        y.push((k, v));
        let k = &String::from("circwindow");
        let v = &900;
        y.push((k, v));
        let z = x.saturating_update(y.into_iter());
        assert!(z.is_empty());
        assert_eq!(x.min_circuit_path_threshold.as_percent().get(), 54);
        assert_eq!(x.circuit_window.get(), 900);
    }

    #[test]
    fn good_out_of_range() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("sendme_accept_min_version");
        let v = &30;
        y.push((k, v));
        let k = &String::from("min_paths_for_circs_pct");
        let v = &255;
        y.push((k, v));
        let z = x.saturating_update(y.into_iter());
        assert!(z.is_empty());
        assert_eq!(x.sendme_accept_min_version.get(), 30);
        assert_eq!(x.min_circuit_path_threshold.as_percent().get(), 95);
    }

    #[test]
    fn good_invalid_rep() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("sendme_accept_min_version");
        let v = &30;
        y.push((k, v));
        let k = &String::from("min_paths_for_circs_pct");
        let v = &9000;
        y.push((k, v));
        let z = x.saturating_update(y.into_iter());
        assert!(z.is_empty());
        assert_eq!(x.sendme_accept_min_version.get(), 30);
        assert_eq!(x.min_circuit_path_threshold.as_percent().get(), 95);
    }

    // #[test]
    // fn good_duplicate() {}
    #[test]
    fn good_unknown() {
        let mut x = NetParameters::default();
        let mut y = Vec::<(&String, &i32)>::new();
        let k = &String::from("sendme_accept_min_version");
        let v = &30;
        y.push((k, v));
        let k = &String::from("not_a_real_parameter");
        let v = &9000;
        y.push((k, v));
        let z = x.saturating_update(y.into_iter());
        assert_eq!(z, vec![&String::from("not_a_real_parameter")]);
        assert_eq!(x.sendme_accept_min_version.get(), 30);
    }

    #[test]
    fn from_consensus() {
        let mut p = NetParameters::default();
        let mut mp: std::collections::HashMap<String, i32> = std::collections::HashMap::new();
        mp.insert("bwweightscale".to_string(), 70);
        mp.insert("min_paths_for_circs_pct".to_string(), 45);
        mp.insert("im_a_little_teapot".to_string(), 1);
        mp.insert("circwindow".to_string(), 99999);
        mp.insert("ExtendByEd25519ID".to_string(), 1);

        let z = p.saturating_update(mp.iter());
        assert_eq!(z, vec![&String::from("im_a_little_teapot")]);

        assert_eq!(p.bw_weight_scale.get(), 70);
        assert_eq!(p.min_circuit_path_threshold.as_percent().get(), 45);
        let b_val: bool = p.extend_by_ed25519_id.into();
        assert!(b_val);
    }

    #[test]
    fn all_parameters() {
        use std::time::Duration;
        let mut p = NetParameters::default();
        let mp = [
            ("bwweightscale", 10),
            ("cbtdisabled", 1),
            ("cbtnummodes", 11),
            ("cbtrecentcount", 12),
            ("cbtmaxtimeouts", 13),
            ("cbtmincircs", 5),
            ("cbtquantile", 61),
            ("cbtclosequantile", 15),
            ("cbtlearntimeout", 1900),
            ("cbtmintimeout", 2020),
            ("cbtinitialtimeout", 2050),
            ("cbttestfreq", 110),
            ("cbtmaxopencircs", 14),
            ("circwindow", 999),
            ("CircuitPriorityHalflifeMsec", 222),
            ("guard-lifetime-days", 36),
            ("guard-confirmed-min-lifetime-days", 37),
            ("guard-internet-likely-down-interval", 38),
            ("guard-max-sample-size", 39),
            ("guard-max-sample-threshold", 40),
            ("guard-min-filtered-sample-size", 41),
            ("guard-n-primary-guards", 42),
            ("guard-n-primary-guards-to-use", 43),
            ("guard-n-primary-dir-guards-to-use", 44),
            ("guard-nonprimary-guard-connect-timeout", 45),
            ("guard-nonprimary-guard-idle-timeout", 46),
            ("guard-remove-unlisted-guards-after-days", 47),
            ("guard-meaningful-restriction-percent", 12),
            ("guard-extreme-restriction-percent", 3),
            ("ExtendByEd25519ID", 0),
            ("min_paths_for_circs_pct", 51),
            ("nf_conntimeout_clients", 606),
            ("sendme_accept_min_version", 31),
            ("sendme_emit_min_version", 32),
        ];
        let ignored = p.saturating_update(mp.iter().map(|(a, b)| (a, b)));
        assert!(ignored.is_empty());

        assert_eq!(p.bw_weight_scale.get(), 10);
        assert!(bool::from(p.cbt_learning_disabled));
        assert_eq!(p.cbt_num_xm_modes.get(), 11);
        assert_eq!(p.cbt_success_count.get(), 12);
        assert_eq!(p.cbt_max_timeouts.get(), 13);
        assert_eq!(p.cbt_min_circs_for_estimate.get(), 5);
        assert_eq!(p.cbt_timeout_quantile.as_percent().get(), 61);
        assert_eq!(p.cbt_abandon_quantile.as_percent().get(), 15);
        assert_eq!(
            Duration::try_from(p.unused_client_circ_timeout_while_learning_cbt).unwrap(),
            Duration::from_secs(1900)
        );
        assert_eq!(
            Duration::try_from(p.cbt_min_timeout).unwrap(),
            Duration::from_millis(2020)
        );
        assert_eq!(
            Duration::try_from(p.cbt_initial_timeout).unwrap(),
            Duration::from_millis(2050)
        );
        assert_eq!(
            Duration::try_from(p.cbt_testing_delay).unwrap(),
            Duration::from_secs(110)
        );
        assert_eq!(p.cbt_max_open_circuits_for_testing.get(), 14);
        assert_eq!(p.circuit_window.get(), 999);
        assert_eq!(
            Duration::try_from(p.circuit_priority_half_life).unwrap(),
            Duration::from_millis(222)
        );
        assert!(!bool::from(p.extend_by_ed25519_id));
        assert_eq!(p.min_circuit_path_threshold.as_percent().get(), 51);
        assert_eq!(
            Duration::try_from(p.unused_client_circ_timeout).unwrap(),
            Duration::from_secs(606)
        );
        assert_eq!(p.sendme_accept_min_version.get(), 31);
        assert_eq!(p.sendme_emit_min_version.get(), 32);

        assert_eq!(
            Duration::try_from(p.guard_lifetime_unconfirmed).unwrap(),
            Duration::from_secs(86400 * 36)
        );
        assert_eq!(
            Duration::try_from(p.guard_lifetime_confirmed).unwrap(),
            Duration::from_secs(86400 * 37)
        );
        assert_eq!(
            Duration::try_from(p.guard_internet_likely_down).unwrap(),
            Duration::from_secs(38)
        );
        assert_eq!(p.guard_max_sample_size.get(), 39);
        assert_eq!(p.guard_max_sample_threshold.as_percent().get(), 40);
        assert_eq!(p.guard_filtered_min_sample_size.get(), 41);
        assert_eq!(p.guard_n_primary.get(), 42);
        assert_eq!(p.guard_use_parallelism.get(), 43);
        assert_eq!(p.guard_dir_use_parallelism.get(), 44);
        assert_eq!(
            Duration::try_from(p.guard_nonprimary_connect_timeout).unwrap(),
            Duration::from_secs(45)
        );
        assert_eq!(
            Duration::try_from(p.guard_nonprimary_idle_timeout).unwrap(),
            Duration::from_secs(46)
        );
        assert_eq!(
            Duration::try_from(p.guard_remove_unlisted_after).unwrap(),
            Duration::from_secs(86400 * 47)
        );
        assert_eq!(p.guard_meaningful_restriction.as_percent().get(), 12);
        assert_eq!(p.guard_extreme_restriction.as_percent().get(), 3);
    }
}