breakpilot-compliance/consent-tester/main.py

"""
Consent Tester Service — Playwright-based 3-phase cookie consent test.

Tests what scripts/cookies load BEFORE consent, AFTER rejection, and AFTER acceptance.
Runs as independent microservice on port 8094.
"""

import logging
from datetime import datetime, timezone

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel

from services.consent_scanner import run_consent_test, ConsentTestResult
from services.authenticated_scanner import run_authenticated_test, AuthTestResult
from services.playwright_scanner import scan_website_playwright
from services.dsi_discovery import discover_dsi_documents, DSIDiscoveryResult

logging.basicConfig(level=logging.INFO, format="%(levelname)s:%(name)s: %(message)s")
logger = logging.getLogger(__name__)

app = FastAPI(title="BreakPilot Consent Tester", version="1.0.0")

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_methods=["*"],
    allow_headers=["*"],
)


class ScanRequest(BaseModel):
    url: str
    timeout_per_phase: int = 10  # seconds to wait after page load


class ScanResponse(BaseModel):
    url: str
    banner_detected: bool
    banner_provider: str
    phases: dict
    summary: dict
    scanned_at: str
    category_tests: list = []
    banner_checks: dict = {}


@app.get("/health")
async def health():
    return {"status": "healthy", "service": "consent-tester"}


@app.post("/scan", response_model=ScanResponse)
async def scan_consent(req: ScanRequest):
    """Run 3-phase consent test on a URL."""
    logger.info("Starting consent test for %s", req.url)
    result = await run_consent_test(req.url, req.timeout_per_phase)

    return ScanResponse(
        url=req.url,
        banner_detected=result.banner_detected,
        banner_provider=result.banner_provider,
        phases={
            "before_consent": {
                "scripts": result.before_scripts,
                "cookies": result.before_cookies,
                "tracking_services": result.before_tracking,
                "violations": [v.__dict__ for v in result.before_violations],
            },
            "after_reject": {
                "scripts": result.reject_scripts,
                "cookies": result.reject_cookies,
                "new_tracking": result.reject_new_tracking,
                "violations": [v.__dict__ for v in result.reject_violations],
            },
            "after_accept": {
                "scripts": result.accept_scripts,
                "cookies": result.accept_cookies,
                "new_tracking": result.accept_new_tracking,
                "undocumented": result.accept_undocumented,
            },
        },
        summary={
            "critical": sum(1 for v in result.reject_violations if v.severity == "CRITICAL"),
            "high": len(result.before_violations) + sum(1 for v in result.banner_text_violations if v.severity == "HIGH"),
            "undocumented": len(result.accept_undocumented),
            "total_violations": len(result.before_violations) + len(result.reject_violations) + len(result.banner_text_violations),
            "category_violations": sum(len(ct.violations) for ct in result.category_tests),
            "categories_tested": len(result.category_tests),
            "banner_text_issues": len(result.banner_text_violations),
        },
        banner_checks={
            "has_impressum_link": result.banner_has_impressum_link,
            "has_dse_link": result.banner_has_dse_link,
            "violations": [v.__dict__ for v in result.banner_text_violations],
        },
        scanned_at=datetime.now(timezone.utc).isoformat(),
        category_tests=[{
            "category": ct.category,
            "category_label": ct.category_label,
            "tracking_services": ct.tracking_services,
            "violations": ct.violations,
        } for ct in result.category_tests] if result.category_tests else [],
    )


class AuthScanRequest(BaseModel):
    url: str
    username: str
    password: str
    username_selector: str = ""
    password_selector: str = ""
    submit_selector: str = ""


class AuthCheckInfo(BaseModel):
    found: bool = False
    text: str = ""
    legal_ref: str = ""


class AuthScanResponse(BaseModel):
    url: str
    authenticated: bool
    login_error: str = ""
    checks: dict[str, AuthCheckInfo]
    findings_count: int
    scanned_at: str


LEGAL_REFS = {
    "cancel_subscription": "§312k BGB (Kuendigungsbutton)",
    "delete_account": "Art. 17 DSGVO (Recht auf Loeschung)",
    "export_data": "Art. 20 DSGVO (Datenportabilitaet)",
    "consent_settings": "Art. 7 Abs. 3 DSGVO (Widerruf der Einwilligung)",
    "profile_visible": "Art. 15 DSGVO (Auskunftsrecht)",
}


@app.post("/authenticated-scan", response_model=AuthScanResponse)
async def authenticated_scan(req: AuthScanRequest):
    """Test post-login functionality. Credentials are destroyed after test."""
    logger.info("Starting authenticated test for %s", req.url)

    result = await run_authenticated_test(
        url=req.url,
        username=req.username,
        password=req.password,
        username_selector=req.username_selector,
        password_selector=req.password_selector,
        submit_selector=req.submit_selector,
    )

    checks = {
        "cancel_subscription": AuthCheckInfo(
            found=result.cancel_subscription.found,
            text=result.cancel_subscription.text,
            legal_ref=LEGAL_REFS["cancel_subscription"],
        ),
        "delete_account": AuthCheckInfo(
            found=result.delete_account.found,
            text=result.delete_account.text,
            legal_ref=LEGAL_REFS["delete_account"],
        ),
        "export_data": AuthCheckInfo(
            found=result.export_data.found,
            text=result.export_data.text,
            legal_ref=LEGAL_REFS["export_data"],
        ),
        "consent_settings": AuthCheckInfo(
            found=result.consent_settings.found,
            text=result.consent_settings.text,
            legal_ref=LEGAL_REFS["consent_settings"],
        ),
        "profile_visible": AuthCheckInfo(
            found=result.profile_visible.found,
            text=result.profile_visible.text,
            legal_ref=LEGAL_REFS["profile_visible"],
        ),
    }

    missing = sum(1 for c in checks.values() if not c.found)

    return AuthScanResponse(
        url=req.url,
        authenticated=result.authenticated,
        login_error=result.login_error,
        checks=checks,
        findings_count=missing,
        scanned_at=datetime.now(timezone.utc).isoformat(),
    )


# ═══════════════════════════════════════════════════════════════
# PLAYWRIGHT WEBSITE SCAN (Phase 10 — replaces httpx scanner)
# ═══════════════════════════════════════════════════════════════

class WebsiteScanRequest(BaseModel):
    url: str
    max_pages: int = 15
    click_nav: bool = True


class PageInfo(BaseModel):
    url: str
    status: int
    title: str = ""
    error: str = ""


class WebsiteScanResponse(BaseModel):
    url: str
    pages: list[PageInfo]
    pages_count: int
    external_scripts: list[str]
    cookies: list[str]
    page_htmls: dict[str, str]  # url -> rendered HTML (for backend analysis)
    scanned_at: str


@app.post("/website-scan", response_model=WebsiteScanResponse)
async def website_scan(req: WebsiteScanRequest):
    """Scan website using Playwright — discovers pages via JS navigation + menu clicks."""
    logger.info("Starting Playwright website scan for %s (max %d pages)", req.url, req.max_pages)

    result = await scan_website_playwright(req.url, req.max_pages, req.click_nav)

    # Build page HTML map (only successful pages, truncated)
    page_htmls = {}
    for p in result.pages:
        if p.html and p.status < 400:
            page_htmls[p.url] = p.html[:50000]  # Cap at 50KB per page

    return WebsiteScanResponse(
        url=req.url,
        pages=[PageInfo(url=p.url, status=p.status, title=p.title, error=p.error) for p in result.pages],
        pages_count=len(result.pages),
        external_scripts=result.external_scripts[:50],
        cookies=result.all_cookies,
        page_htmls=page_htmls,
        scanned_at=datetime.now(timezone.utc).isoformat(),
    )


# ═══════════════════════════════════════════════════════════════
# DSI DISCOVERY (finds all privacy + legal documents on a website)
# ═══════════════════════════════════════════════════════════════

class DSIDiscoveryRequest(BaseModel):
    url: str
    max_documents: int = 30


class DSIDocumentInfo(BaseModel):
    title: str
    url: str
    source_url: str
    language: str = ""
    doc_type: str = ""
    word_count: int = 0
    text_preview: str = ""


class DSIDiscoveryResponse(BaseModel):
    url: str
    documents: list[DSIDocumentInfo]
    total_found: int
    languages_detected: list[str]
    errors: list[str]
    scanned_at: str


@app.post("/dsi-discovery", response_model=DSIDiscoveryResponse)
async def dsi_discovery(req: DSIDiscoveryRequest):
    """Discover all privacy/data protection documents on a website.

    Generically finds DSI, AGB, Nutzungsbedingungen, Widerrufsbelehrung,
    Cookie-Richtlinien etc. regardless of website technology or language.
    Supports HTML pages, accordions, sidebars, PDFs, cross-domain links.
    """
    logger.info("Starting DSI discovery for %s (max %d docs)", req.url, req.max_documents)

    from playwright.async_api import async_playwright

    async with async_playwright() as p:
        browser = await p.chromium.launch(
            headless=True,
            args=["--no-sandbox", "--disable-dev-shm-usage"],
        )
        context = await browser.new_context(
            user_agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
                       "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
        )
        page = await context.new_page()

        try:
            result = await discover_dsi_documents(page, req.url, req.max_documents)
        finally:
            await context.close()
            await browser.close()

    return DSIDiscoveryResponse(
        url=req.url,
        documents=[
            DSIDocumentInfo(
                title=d.title,
                url=d.url,
                source_url=d.source_url,
                language=d.language,
                doc_type=d.doc_type,
                word_count=d.word_count,
                text_preview=d.text[:500] if d.text else "",
            )
            for d in result.documents
        ],
        total_found=result.total_found,
        languages_detected=result.languages_detected,
        errors=result.errors,
        scanned_at=datetime.now(timezone.utc).isoformat(),
    )