use crate::detectors::base::{Detector, DetectorConfig};
use uuid::Uuid;
use crate::graph::GraphStore;
use crate::models::{deterministic_finding_id, Finding, Severity};
use anyhow::Result;
use regex::Regex;
use std::path::PathBuf;
use std::sync::OnceLock;
static LOG_PATTERN: OnceLock<Regex> = OnceLock::new();
fn log_pattern() -> &'static Regex {
LOG_PATTERN.get_or_init(|| Regex::new(r"(?i)(logger\.|log\.|console\.log|print\(|logging\.)").unwrap())
}
pub struct LogInjectionDetector {
repository_path: PathBuf,
max_findings: usize,
}
impl LogInjectionDetector {
pub fn new(repository_path: impl Into<PathBuf>) -> Self {
Self { repository_path: repository_path.into(), max_findings: 50 }
}
}
impl Detector for LogInjectionDetector {
fn name(&self) -> &'static str { "log-injection" }
fn description(&self) -> &'static str { "Detects user input in logs" }
fn detect(&self, _graph: &GraphStore) -> Result<Vec<Finding>> {
let mut findings = vec![];
let walker = ignore::WalkBuilder::new(&self.repository_path).hidden(false).git_ignore(true).build();
for entry in walker.filter_map(|e| e.ok()) {
if findings.len() >= self.max_findings { break; }
let path = entry.path();
if !path.is_file() { continue; }
let ext = path.extension().and_then(|e| e.to_str()).unwrap_or("");
if !matches!(ext, "py"|"js"|"ts"|"java"|"go"|"rb"|"php") { continue; }
if let Some(content) = crate::cache::global_cache().get_content(path) {
for (i, line) in content.lines().enumerate() {
if log_pattern().is_match(line) {
let has_user_input = line.contains("req.") || line.contains("request") ||
line.contains("input") || line.contains("user") || line.contains("params");
if has_user_input && (line.contains("f\"") || line.contains("${") || line.contains("+ ")) {
findings.push(Finding {
id: Uuid::new_v4().to_string(),
detector: "LogInjectionDetector".to_string(),
severity: Severity::Medium,
title: "User input in log statement".to_string(),
description: "Unsanitized user input in logs can enable log forging.".to_string(),
affected_files: vec![path.to_path_buf()],
line_start: Some((i + 1) as u32),
line_end: Some((i + 1) as u32),
suggested_fix: Some("Sanitize newlines and control chars from input.".to_string()),
estimated_effort: Some("10 minutes".to_string()),
category: Some("security".to_string()),
cwe_id: Some("CWE-117".to_string()),
why_it_matters: Some("Attackers can forge log entries.".to_string()),
..Default::default()
});
}
}
}
}
}
Ok(findings)
}
}