openmoat 0.13.0

Policy checks for AI coding agents: decides allow, defer, ask or deny for every tool call from Claude Code, Codex, Cursor, OpenClaw, GitHub Copilot CLI, pi and Gemini CLI, configures Claude Code's, Codex's and Cursor's own OS sandboxes from the same policy, and keeps a local audit log.
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

use super::merge::{Change, merge};
use super::{DEFAULT_V0_3_0, line_endings_of};
use crate::integrity::sha256_hex;

const BASE: &str = "defaults:\n  net: deny\n\nallow:\n  - id: a\n    fs.write: [x]\n  - id: b\n";

#[test]
fn the_assumed_base_is_the_released_0_3_0_default() {
    // `git show v0.3.0:crates/openmoat-core/policies/default-v1.yaml | shasum -a 256`
    assert_eq!(
        sha256_hex(DEFAULT_V0_3_0.as_bytes()),
        "ce353aee992e1f3cf0b83a99a9a952f0210f0db71f2598baa5f69ced4a4b779e"
    );
}

#[test]
fn additions_apply_where_the_policy_kept_the_base() {
    let new = BASE
        .replace("net: deny\n", "net: deny\n  web.search: allow\n")
        .replace("[x]", "[x, \"!y\"]");
    let yours = format!("{BASE}  - id: mine\n");
    let merged = merge(BASE, &yours, &new);
    assert_eq!(merged.text, format!("{new}  - id: mine\n"));
    assert_eq!(merged.base, new);
    assert_eq!(merged.applied().count(), 2);
    assert_eq!(merged.conflicts().count(), 0);
    assert_eq!(merged.changes[0].line, 3);
    assert_eq!(merged.changes[1].line, 6);
}

#[test]
fn a_line_the_person_changed_is_kept_and_reported() {
    let new = BASE.replace("[x]", "[x, \"!y\"]");
    let yours = BASE.replace("[x]", "[x, z]");
    let merged = merge(BASE, &yours, &new);
    assert_eq!(merged.text, yours);
    assert_eq!(merged.applied().count(), 0);
    let conflict = merged.conflicts().next().unwrap();
    assert_eq!(conflict.yours, "    fs.write: [x, z]\n");
    assert_eq!(conflict.default, "    fs.write: [x, \"!y\"]\n");
    // Recorded with the old base there, so the change is reported again next time.
    assert_eq!(merged.base, BASE);
}

#[test]
fn a_removed_rule_stays_removed_and_a_change_next_to_an_edit_is_not_applied() {
    let new = BASE.replace("  - id: b\n", "  - id: b\n    shell: [ls]\n");
    let yours = BASE.replace("  - id: b\n", "");
    let merged = merge(BASE, &yours, &new);
    assert_eq!(merged.text, yours);
    assert_eq!(merged.conflicts().count(), 1);
}

#[test]
fn a_change_already_made_is_not_offered() {
    let new = BASE.replace("net: deny\n", "net: deny\n  web.search: allow\n");
    let merged = merge(BASE, &new, &new);
    assert_eq!(merged.text, new);
    assert_eq!(merged.base, new);
    assert_eq!(merged.changes, Vec::<Change>::new());
    assert_eq!(merged.kept, merged.base_lines);
}

#[test]
fn a_policy_from_the_previous_default_is_offered_build_credentials() {
    let new = openmoat_core::DEFAULT_POLICY;
    let start = new.find("  # Maven and Gradle settings").unwrap();
    let end = new.find("  - id: env-secrets").unwrap();
    let old = format!("{}{}", &new[..start], &new[end..]);
    let yours = old.replace(
        "\"~/.zsh_history\"",
        "\"~/.zsh_history\"\n      - \"~/mine\"",
    );
    let merged = merge(&old, &yours, new);
    assert_eq!(merged.conflicts().count(), 0);
    let policy = openmoat_core::Policy::parse(&merged.text).unwrap();
    let group = policy.deny.iter().find(|g| g.id == "build-credentials");
    assert!(group.is_some_and(|g| g.hook_only && g.fs_read.len() == 3));
    assert!(merged.text.contains("~/mine"));
}

#[test]
fn crlf_policies_line_up_with_the_lf_default() {
    let yours = BASE.replace('\n', "\r\n");
    let base = line_endings_of(&yours, BASE);
    let new = line_endings_of(&yours, &BASE.replace("[x]", "[x, y]"));
    let merged = merge(&base, &yours, &new);
    assert_eq!(merged.text, new);
    assert_eq!(line_endings_of("lf\n", &yours), BASE);
}

/// After one upgrade only the stretches the person changed are offered: a
/// default addition held back next to one of them is taken by the same upgrade.
#[test]
fn one_upgrade_leaves_only_the_persons_conflicts() {
    let fs_write = r#"fs.write: ["${project}/**", "!${project}/.git/**", "!${project}/.moat/**"]"#;
    let mine = r#"fs.write: ["${project}/**", "!${project}/.git/**", "!${project}/.moat/**", "!${project}/keys/**"]"#;
    let rule = "  - id: my-rule\n    shell: [\"make deploy\"]\n";
    let edited = DEFAULT_V0_3_0
        .replace(fs_write, mine)
        .replace("ask:\n", &format!("ask:\n{rule}"));
    let first = merge(DEFAULT_V0_3_0, &edited, openmoat_core::DEFAULT_POLICY);
    assert!(first.text.contains(mine) && first.text.contains(rule));
    assert!(first.conflicts().count() > 0);
    let again = merge(&first.base, &first.text, openmoat_core::DEFAULT_POLICY);
    assert_eq!(again.applied().count(), 0);
    assert_eq!(again.text, first.text);
}