link-assistant-router 1.10.1

Link.Assistant.Router — Claude MAX OAuth proxy and token gateway for Anthropic APIs
Documentation 
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

use super::*;

/// An unverified candidate is not a live credential. A timeout, malformed
/// catalog response, or network failure must therefore leave even an empty
/// conditional destination empty.
#[tokio::test]
async fn conditional_import_refuses_an_unverified_candidate() {
    let home = tempfile::tempdir().expect("credential home");
    let data = tempfile::tempdir().expect("router data");
    let reader = SubscriptionReader::new(SubscriptionProvider::Gemini, home.path());
    let error = install_candidate(
        &reader,
        data.path(),
        r#"{"access_token":"unverified","refresh_token":"unknown"}"#,
        CredentialProbe::Unverified,
        ImportPolicy {
            if_absent: true,
            capability_asserted: false,
            router_owned_candidate: false,
            sharing: CredentialSharing::PreferFollow,
        },
    )
    .await
    .expect_err("unverified candidate must be refused");

    assert!(error.contains("not accepted"), "{error}");
    assert!(!home.path().join("oauth_creds.json").exists());
}

/// The positive capability assertion is not a bypass: rejection still wins.
#[tokio::test]
async fn capability_assertion_cannot_install_a_rejected_candidate() {
    let home = tempfile::tempdir().expect("credential home");
    let data = tempfile::tempdir().expect("router data");
    let reader = SubscriptionReader::new(SubscriptionProvider::Codex, home.path());
    let candidate = r#"{"auth_mode":"chatgpt","tokens":{"access_token":"rejected","refresh_token":"explicit"}}"#;

    let error = install_candidate(
        &reader,
        data.path(),
        candidate,
        CredentialProbe::Rejected,
        ImportPolicy {
            if_absent: true,
            capability_asserted: true,
            router_owned_candidate: false,
            sharing: CredentialSharing::PreferFollow,
        },
    )
    .await
    .expect_err("capability assertion must not bypass positive vendor acceptance");

    let destination = home.path().join("auth.json");
    assert!(error.contains("not accepted"), "{error}");
    assert!(!destination.exists());
}

/// Replacement is allowed only for a positively accepted candidate. A stale
/// or revoked local copy must never replace a working rotating chain.
#[tokio::test]
async fn ordinary_import_preserves_the_destination_when_candidate_is_rejected() {
    let home = tempfile::tempdir().expect("credential home");
    let data = tempfile::tempdir().expect("router data");
    let reader = SubscriptionReader::new(SubscriptionProvider::Gemini, home.path());
    let current = r#"{"access_token":"current","refresh_token":"rotated"}"#;
    std::fs::write(home.path().join("oauth_creds.json"), current).expect("current credential");
    let error = install_candidate(
        &reader,
        data.path(),
        r#"{"access_token":"rejected","scope":"preserved"}"#,
        CredentialProbe::Rejected,
        ImportPolicy {
            if_absent: false,
            capability_asserted: false,
            router_owned_candidate: false,
            sharing: CredentialSharing::PreferFollow,
        },
    )
    .await
    .expect_err("replacement must require positive vendor acceptance");

    assert!(error.contains("not accepted"), "{error}");
    assert_eq!(
        std::fs::read_to_string(home.path().join("oauth_creds.json")).unwrap(),
        current
    );
}

/// The same positive-acceptance gate applies to every subscription provider
/// and to both installation modes (issue #385).
#[tokio::test]
async fn rejected_and_unverified_candidates_never_change_any_provider_destination() {
    for provider in SubscriptionProvider::ALL {
        for if_absent in [false, true] {
            for probe in [CredentialProbe::Rejected, CredentialProbe::Unverified] {
                let root = tempfile::tempdir().expect("credential root");
                let home = root.path().join("home");
                let data = root.path().join("data");
                std::fs::create_dir_all(&home).expect("credential home");
                let reader = SubscriptionReader::new(provider, &home);
                let path = home.join(provider.canonical_credential_filename());
                let current = b"existing credential bytes";
                if !if_absent {
                    std::fs::write(&path, current).expect("existing credential");
                }

                let result = install_candidate(
                    &reader,
                    &data,
                    r#"{"access_token":"candidate","refresh_token":"candidate-refresh"}"#,
                    probe,
                    ImportPolicy {
                        if_absent,
                        capability_asserted: false,
                        router_owned_candidate: false,
                        sharing: CredentialSharing::PreferFollow,
                    },
                )
                .await;

                assert!(
                    result.is_err(),
                    "{provider} if_absent={if_absent} {probe:?}"
                );
                if if_absent {
                    assert!(!path.exists(), "{provider} installed {probe:?}");
                } else {
                    assert_eq!(
                        std::fs::read(&path).unwrap(),
                        current,
                        "{provider} replaced destination after {probe:?}"
                    );
                }
            }
        }
    }
}