rsigma 0.15.0

CLI for parsing, validating, linting and evaluating Sigma detection rules
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

//! Integration tests for `rsigma rule migrate-sources`.

mod common;

use common::{rsigma, temp_file};
use predicates::prelude::*;

const PIPELINE_WITH_SOURCES: &str = r#"
name: dynamic_ecs
priority: 50
sources:
  - id: threat_feed
    type: file
    path: /tmp/threat.json
    format: json
  - id: asset_db
    type: http
    url: https://example.com/assets
    format: json
    refresh: 1h
transformations:
  - type: value_placeholders
"#;

const PIPELINE_NO_SOURCES: &str = r#"
name: simple_mapping
priority: 10
transformations:
  - id: map_fields
    type: field_name_mapping
    mapping:
      CommandLine: process.command_line
"#;

#[test]
fn migrate_sources_single_strategy() {
    let pipe_file = temp_file(".yml", PIPELINE_WITH_SOURCES);
    let out_dir = tempfile::tempdir().unwrap();
    let out_file = out_dir.path().join("sources.yml");

    rsigma()
        .args([
            "rule",
            "migrate-sources",
            "-p",
            pipe_file.path().to_str().unwrap(),
            "-o",
            out_file.to_str().unwrap(),
        ])
        .assert()
        .success()
        .stderr(predicate::str::contains("2 source(s)"));

    let content = std::fs::read_to_string(&out_file).unwrap();
    assert!(content.contains("sources:"));
    assert!(content.contains("threat_feed"));
    assert!(content.contains("asset_db"));

    // The pipeline file should no longer have a sources: block
    let pipeline_content = std::fs::read_to_string(pipe_file.path()).unwrap();
    assert!(!pipeline_content.contains("sources:"));
    assert!(pipeline_content.contains("transformations:"));
}

#[test]
fn migrate_sources_dry_run() {
    let pipe_file = temp_file(".yml", PIPELINE_WITH_SOURCES);
    let out_dir = tempfile::tempdir().unwrap();
    let out_file = out_dir.path().join("sources.yml");

    rsigma()
        .args([
            "rule",
            "migrate-sources",
            "-p",
            pipe_file.path().to_str().unwrap(),
            "-o",
            out_file.to_str().unwrap(),
            "--dry-run",
        ])
        .assert()
        .success()
        .stdout(predicate::str::contains("sources:"))
        .stderr(predicate::str::contains("Dry run"));

    // Output file should NOT be created in dry-run mode
    assert!(!out_file.exists());
}

#[test]
fn migrate_sources_no_sources_found() {
    let pipe_file = temp_file(".yml", PIPELINE_NO_SOURCES);
    let out_dir = tempfile::tempdir().unwrap();
    let out_file = out_dir.path().join("sources.yml");

    rsigma()
        .args([
            "rule",
            "migrate-sources",
            "-p",
            pipe_file.path().to_str().unwrap(),
            "-o",
            out_file.to_str().unwrap(),
        ])
        .assert()
        .success()
        .stderr(predicate::str::contains("No sources found"));
}

#[test]
fn migrate_sources_per_pipeline_strategy() {
    let pipe1 = temp_file(".yml", PIPELINE_WITH_SOURCES);
    let out_dir = tempfile::tempdir().unwrap();

    rsigma()
        .args([
            "rule",
            "migrate-sources",
            "-p",
            pipe1.path().to_str().unwrap(),
            "-o",
            out_dir.path().to_str().unwrap(),
            "--strategy",
            "per-pipeline",
        ])
        .assert()
        .success();

    // Should have created a sources file in the output directory
    let entries: Vec<_> = std::fs::read_dir(out_dir.path())
        .unwrap()
        .filter_map(|e| e.ok())
        .collect();
    assert!(!entries.is_empty(), "expected at least one output file");
}