feat: on-demand external script analysis + code viewer; refactor form analysis to rule engine

- API: add `POST /api/analyze_script` (app/blueprints/api.py)
  - Fetch one external script to artifacts, run rules, return findings + snippet
  - Uses new ExternalScriptFetcher (results_path aware) and job UUID
  - Returns: { ok, final_url, status_code, bytes, truncated, sha256, artifact_path, findings[], snippet, snippet_len }
  - TODO: document in openapi/openapi.yaml

- Fetcher: update `app/utils/external_fetch.py`
  - Constructed with `results_path` (UUID dir); writes to `<results_path>/scripts/fetched/<index>.js`
  - Loads settings via `get_settings()`, logs via std logging

- UI (results.html):
  - Move “Analyze external script” action into **Content Snippet** column for external rows
  - Clicking replaces button with `<details>` snippet, shows rule matches, and adds “open in viewer” link
  - Robust fetch handler (checks JSON, shows errors); builds viewer URL from absolute artifact path

- Viewer:
  - New route: `GET /view/artifact/<run_uuid>/<path:filename>` (app/blueprints/ui.py)
  - New template: Monaco-based read-only code viewer (viewer.html)
  - Removes SRI on loader to avoid integrity block; loads file via `raw_url` and detects language by extension

- Forms:
  - Refactor `analyze_forms` to mirror scripts analysis:
    - Uses rule engine (`category == "form"`) across regex/function rules
    - Emits rows only when matches exist
    - Includes `content_snippet`, `action`, `method`, `inputs`, `rules`
  - Replace legacy plumbing (`flagged`, `flag_reasons`, `status`) in output
  - Normalize form function rules to canonical returns `(bool, Optional[str])`:
    - `form_action_missing`
    - `form_http_on_https_page`
    - `form_submits_to_different_host`
    - Add minor hardening (lowercasing hosts, no-op actions, clearer reasons)

- CSS: add `.forms-table` to mirror `.scripts-table` (5 columns)
  - Fixed table layout, widths per column, chip/snippet styling, responsive tweaks

- Misc:
  - Fix “working outside app context” issue by avoiding `current_app` at import time (left storage logic inside routes)
  - Add “View Source” link to open page source in viewer

Refs:
- Roadmap: mark “Source code viewer” done; keep TODO to add `/api/analyze_script` to OpenAPI
This commit is contained in:
2025-08-21 15:32:24 -05:00
parent 05cf23ad67
commit 3a24b392f2
15 changed files with 1192 additions and 218 deletions

135
app/blueprints/ui.py Normal file
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# app/blueprints/ui.py
import os
import json
import asyncio
from pathlib import Path
from datetime import datetime
from flask import Blueprint, render_template, request, redirect, url_for, flash, current_app, send_file, abort
from app.utils.browser import get_browser
from app.utils.enrichment import enrich_url
from app.utils.settings import get_settings
from app.utils.io_helpers import get_recent_results
bp = Blueprint("main", __name__)
settings = get_settings()
app_name = settings.app.name
app_version = f"v {settings.app.version_major}.{settings.app.version_minor}"
# --- context processor ---
@bp.context_processor
def inject_app_info():
"""Inject app name and version into all templates."""
return {
"app_name": app_name,
"app_version": app_version
}
@bp.route("/", methods=["GET"])
def index():
"""
Render the landing page with optional 'recent_results' list.
The number of recent runs is controlled via settings.cache.recent_runs_count (int).
Falls back to 10 if not present or invalid.
"""
# Pull recent count from settings with a safe fallback
try:
# settings is already initialized at module import in your file
recent_count = int(getattr(settings.cache, "recent_runs_count", 10))
if recent_count < 0:
recent_count = 0
except Exception:
recent_count = 10
# Resolve SANDBOX_STORAGE from app config
storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
# Build the recent list (non-fatal if storage is empty or unreadable)
recent_results = get_recent_results(storage, recent_count, current_app.logger)
# Pass to template; your index.html will hide the card if list is empty
return render_template("index.html", recent_results=recent_results)
@bp.route("/analyze", methods=["POST"])
def analyze():
url = request.form.get("url", "").strip()
current_app.logger.info(f"[*] Analyzing {url}")
if not url:
flash("Please enter a URL.", "error")
return redirect(url_for("main.index"))
storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
storage.mkdir(parents=True, exist_ok=True)
try:
browser = get_browser()
result = asyncio.run(browser.fetch_page_artifacts(url))
current_app.logger.info(f"[+] Analysis done for {url}")
except Exception as e:
flash(f"Analysis failed: {e}", "error")
current_app.logger.error(f"Analysis failed for {url}: {e}")
return redirect(url_for("main.index"))
# Add enrichment safely
try:
enrichment = enrich_url(url)
result["enrichment"] = enrichment
current_app.logger.info(f"[+] Enrichment added for {url}")
except Exception as e:
result["enrichment"] = {}
current_app.logger.warning(f"[!] Enrichment failed for {url}: {e}")
# Redirect to permalink page for this run
return redirect(url_for("main.view_result", run_uuid=result["uuid"]))
@bp.route("/results/<run_uuid>", methods=["GET"])
def view_result(run_uuid: str):
# Resolve SANDBOX_STORAGE from app config
storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
run_dir = storage / run_uuid
results_path = run_dir / "results.json"
if not results_path.exists():
current_app.logger.error(f"Results not found for UUID: {run_uuid}")
abort(404)
with open(results_path, "r", encoding="utf-8") as f:
result = json.load(f)
# Pass the UUID to the template for artifact links
result["uuid"] = run_uuid
return render_template("result.html", **result)
@bp.route("/artifacts/<run_uuid>/<filename>", methods=["GET"])
def artifacts(run_uuid: str, filename: str):
# Resolve SANDBOX_STORAGE from app config
storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
run_dir = storage / run_uuid
full_path = run_dir / filename
# Prevent directory traversal
try:
full_path.relative_to(run_dir.resolve())
except ValueError:
current_app.logger.warning(f"Directory traversal attempt: {filename}")
abort(404)
if not full_path.exists():
current_app.logger.error(f"Artifact not found: {filename} for UUID {run_uuid}")
abort(404)
return send_file(full_path)
@bp.get("/view/artifact/<run_uuid>/<filename>")
def view_artifact(run_uuid, filename):
# Build a safe raw URL that streams the file (you said you already have this route)
raw_url = url_for('api.get_artifact_raw', run_uuid=run_uuid, filename=filename)
# Optional: derive language server-side if you prefer
language = None # e.g., 'javascript'
return render_template('viewer.html', filename=filename, raw_url=raw_url, language=language)