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strix/strix/interface/viewer/report_pdf.py
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Python

"""Build and encrypt a branded PDF report for a run.
The layout mirrors the Strix cloud pentest report (cover page, executive
severity grid, per-finding detail with colored severity badges) but is rendered
entirely locally with reportlab, so it ships without a browser or heavy system
deps and keeps the report on the user's machine.
The PDF carries FULL finding detail, including proof-of-concept scripts, so it
is encrypted end to end with AES-256. The password is generated locally with a
CSPRNG, shown only to the local browser, and never leaves the machine except in
the user's own hands. Strix cannot read the delivered report.
"""
from __future__ import annotations
import html
import re
import secrets
from datetime import datetime
from io import BytesIO
from typing import TYPE_CHECKING, Any
from pypdf import PdfReader, PdfWriter
from reportlab.lib import colors
from reportlab.lib.enums import TA_CENTER
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import ParagraphStyle
from reportlab.lib.units import mm
from reportlab.pdfgen import canvas as pdfcanvas
from reportlab.platypus import (
Flowable,
KeepTogether,
PageBreak,
Paragraph,
SimpleDocTemplate,
Spacer,
Table,
TableStyle,
)
from strix.interface.viewer.transcript import (
primary_target,
read_run_summary,
read_vulnerabilities,
severity_counts,
)
if TYPE_CHECKING:
from pathlib import Path
# Palette lifted from the cloud report theme (styles/base.ts, docx/theme.ts).
_INK = colors.HexColor("#000000")
_TEXT = colors.HexColor("#1a1a1a")
_MUTED = colors.HexColor("#666666")
_FAINT = colors.HexColor("#999999")
_BORDER = colors.HexColor("#e5e5e5")
_LIGHT_BG = colors.HexColor("#f7f7f7")
_SEVERITY_ORDER = ("critical", "high", "medium", "low")
_SEVERITY_COLORS = {
"critical": colors.HexColor("#dc2626"),
"high": colors.HexColor("#ea580c"),
"medium": colors.HexColor("#ca8a04"),
"low": colors.HexColor("#2563eb"),
}
# Helvetica stands in for Geist: a clean sans with no font file to ship.
_SANS = "Helvetica"
_SANS_BOLD = "Helvetica-Bold"
_MONO = "Courier"
_PAGE_W, _PAGE_H = A4
def _esc(value: Any) -> str:
"""Escape a value for reportlab's Paragraph markup."""
return html.escape(str(value)).replace("\n", "<br/>")
class _NumberedCanvas(pdfcanvas.Canvas): # type: ignore[misc] # reportlab base is untyped
"""Two-pass canvas that prints 'Page X of Y' on every page after the cover."""
def __init__(self, *args: Any, **kwargs: Any) -> None:
super().__init__(*args, **kwargs)
self._saved_states: list[dict[str, Any]] = []
def showPage(self) -> None: # noqa: N802 - reportlab API
self._saved_states.append(dict(self.__dict__))
self._startPage()
def save(self) -> None:
total = len(self._saved_states)
for index, state in enumerate(self._saved_states):
self.__dict__.update(state)
if index > 0: # skip the cover page
self._draw_footer(index + 1, total)
super().showPage()
super().save()
def _draw_footer(self, page: int, total: int) -> None:
self.setFont(_SANS, 8)
self.setFillColor(_FAINT)
self.drawCentredString(_PAGE_W / 2, 14 * mm, f"Page {page} of {total}")
class _LogoMark(Flowable): # type: ignore[misc] # reportlab base is untyped
"""The rounded-square Strix mark drawn inline (no raster asset to ship)."""
def __init__(self, size: float = 30) -> None:
super().__init__()
self.size = size
self.width = size
self.height = size
def draw(self) -> None:
c = self.canv
s = self.size
c.setFillColor(_INK)
c.roundRect(0, 0, s, s, s * 0.28, fill=1, stroke=0)
c.setFillColor(colors.white)
c.setFont(_SANS_BOLD, s * 0.56)
c.drawCentredString(s / 2, s * 0.27, "S")
def _styles() -> dict[str, ParagraphStyle]:
styles: dict[str, ParagraphStyle] = {}
styles["wordmark"] = ParagraphStyle(
"Wordmark", fontName=_SANS_BOLD, fontSize=17, leading=20, textColor=_INK
)
styles["badge_label"] = ParagraphStyle(
"BadgeLabel", fontName=_SANS_BOLD, fontSize=9, leading=12, textColor=_MUTED
)
styles["cover_title"] = ParagraphStyle(
"CoverTitle", fontName=_SANS_BOLD, fontSize=34, leading=38, textColor=_INK
)
styles["cover_org"] = ParagraphStyle(
"CoverOrg", fontName=_SANS, fontSize=13, leading=18, textColor=_MUTED
)
styles["meta_label"] = ParagraphStyle(
"MetaLabel", fontName=_SANS_BOLD, fontSize=8, leading=12, textColor=_MUTED
)
styles["meta_value"] = ParagraphStyle(
"MetaValue", fontName=_SANS, fontSize=10.5, leading=14, textColor=_TEXT
)
styles["section"] = ParagraphStyle(
"Section", fontName=_SANS_BOLD, fontSize=18, leading=22, textColor=_INK, spaceAfter=6
)
styles["finding"] = ParagraphStyle(
"Finding", fontName=_SANS_BOLD, fontSize=13, leading=17, textColor=_INK, spaceBefore=6
)
styles["field_label"] = ParagraphStyle(
"FieldLabel",
fontName=_SANS_BOLD,
fontSize=8.5,
leading=12,
textColor=_MUTED,
spaceBefore=10,
spaceAfter=2,
)
styles["body"] = ParagraphStyle(
"Body", fontName=_SANS, fontSize=10, leading=15, textColor=_TEXT, spaceAfter=8
)
styles["md_heading"] = ParagraphStyle(
"MdHeading",
fontName=_SANS_BOLD,
fontSize=11,
leading=15,
textColor=_INK,
spaceBefore=10,
spaceAfter=4,
)
styles["bullet"] = ParagraphStyle(
"Bullet",
fontName=_SANS,
fontSize=10,
leading=15,
textColor=_TEXT,
leftIndent=16,
firstLineIndent=-11,
spaceAfter=3,
)
styles["meta_inline"] = ParagraphStyle(
"MetaInline", fontName=_SANS, fontSize=9, leading=13, textColor=_MUTED, spaceBefore=4
)
# spaceBefore/spaceAfter must exceed borderPadding: reportlab does not reserve
# a bordered paragraph's top padding, so too small a gap lets the background
# box bleed up over the field label above it.
styles["code"] = ParagraphStyle(
"Code",
fontName=_MONO,
fontSize=8,
leading=11,
textColor=_TEXT,
backColor=_LIGHT_BG,
borderColor=_BORDER,
borderWidth=0.5,
borderPadding=8,
spaceBefore=12,
spaceAfter=12,
)
styles["count"] = ParagraphStyle(
"Count", fontName=_SANS_BOLD, fontSize=30, leading=32, alignment=TA_CENTER
)
styles["count_label"] = ParagraphStyle(
"CountLabel",
fontName=_SANS_BOLD,
fontSize=8,
leading=12,
textColor=_MUTED,
alignment=TA_CENTER,
spaceBefore=4,
)
styles["badge"] = ParagraphStyle(
"Badge",
fontName=_SANS_BOLD,
fontSize=9,
leading=11,
textColor=colors.white,
alignment=TA_CENTER,
)
styles["confidential"] = ParagraphStyle(
"Confidential",
fontName=_SANS_BOLD,
fontSize=9,
leading=12,
textColor=colors.white,
alignment=TA_CENTER,
)
return styles
def _parse_time(raw: Any) -> datetime | None:
if not isinstance(raw, str) or not raw:
return None
text = raw.strip().replace(" UTC", "Z").replace(" ", "T")
if text.endswith("Z"):
text = text[:-1] + "+00:00"
try:
return datetime.fromisoformat(text)
except ValueError:
return None
def _fmt_time(raw: Any) -> str:
parsed = _parse_time(raw)
return parsed.strftime("%Y-%m-%d %H:%M UTC") if parsed else "n/a"
def _duration(start: Any, end: Any) -> str:
start_dt = _parse_time(start)
end_dt = _parse_time(end)
if not start_dt or not end_dt:
return "n/a"
seconds = int((end_dt - start_dt).total_seconds())
if seconds < 0:
return "n/a"
hours, remainder = divmod(seconds, 3600)
minutes, secs = divmod(remainder, 60)
if hours:
return f"{hours}h {minutes}m {secs}s"
if minutes:
return f"{minutes}m {secs}s"
return f"{secs}s"
def _severity_badge(styles: dict[str, ParagraphStyle], severity: str) -> Table:
"""A colored pill matching .severity-badge in the cloud report."""
color = _SEVERITY_COLORS.get(severity, _MUTED)
cell = Paragraph(severity.upper(), styles["badge"])
table = Table([[cell]], colWidths=[len(severity) * 6.5 + 20])
table.setStyle(
TableStyle(
[
("BACKGROUND", (0, 0), (-1, -1), color),
("TOPPADDING", (0, 0), (-1, -1), 4),
("BOTTOMPADDING", (0, 0), (-1, -1), 4),
("LEFTPADDING", (0, 0), (-1, -1), 8),
("RIGHTPADDING", (0, 0), (-1, -1), 8),
("VALIGN", (0, 0), (-1, -1), "MIDDLE"),
]
)
)
table.hAlign = "LEFT"
return table
def _severity_grid(styles: dict[str, ParagraphStyle], counts: dict[str, int]) -> Table:
"""The four-card severity grid from the executive summary."""
cells: list[list[Flowable]] = []
for name in _SEVERITY_ORDER:
color = _SEVERITY_COLORS[name]
count_style = ParagraphStyle(f"Count{name}", parent=styles["count"], textColor=color)
cells.append(
[
Paragraph(str(counts.get(name, 0)), count_style),
Paragraph(name.upper(), styles["count_label"]),
]
)
col = (_PAGE_W - 40 * mm) / 4
table = Table([cells], colWidths=[col] * 4)
style = [
("VALIGN", (0, 0), (-1, -1), "MIDDLE"),
("TOPPADDING", (0, 0), (-1, -1), 16),
("BOTTOMPADDING", (0, 0), (-1, -1), 16),
("GRID", (0, 0), (-1, -1), 0.5, _BORDER),
]
for index, name in enumerate(_SEVERITY_ORDER):
style.append(("LINEABOVE", (index, 0), (index, 0), 3, _SEVERITY_COLORS[name]))
table.setStyle(TableStyle(style))
return table
def _section(styles: dict[str, ParagraphStyle], title: str) -> Table:
"""Section title with the underline rule from h2.section-title."""
table = Table([[Paragraph(_esc(title), styles["section"])]], colWidths=[_PAGE_W - 40 * mm])
table.setStyle(
TableStyle(
[
("LINEBELOW", (0, 0), (-1, -1), 1, _BORDER),
("BOTTOMPADDING", (0, 0), (-1, -1), 10),
("LEFTPADDING", (0, 0), (-1, -1), 0),
("RIGHTPADDING", (0, 0), (-1, -1), 0),
("TOPPADDING", (0, 0), (-1, -1), 0),
]
)
)
return table
def _cover(
styles: dict[str, ParagraphStyle], record: dict[str, Any], run_name: str
) -> list[Flowable]:
header = Table(
[[_LogoMark(30), Paragraph("Strix", styles["wordmark"])]],
colWidths=[38, _PAGE_W - 40 * mm - 38],
)
header.setStyle(
TableStyle(
[
("VALIGN", (0, 0), (-1, -1), "MIDDLE"),
("LEFTPADDING", (0, 0), (-1, -1), 0),
("RIGHTPADDING", (0, 0), (-1, -1), 0),
("TOPPADDING", (0, 0), (-1, -1), 0),
("BOTTOMPADDING", (0, 0), (-1, -1), 0),
]
)
)
target = primary_target(record) or "Target"
meta_rows = [
("TARGET", primary_target(record) or "unknown target"),
("RUN", run_name),
("SCAN MODE", str(record.get("scan_mode") or "n/a")),
("STATUS", str(record.get("status") or "n/a")),
("STARTED", _fmt_time(record.get("start_time"))),
("COMPLETED", _fmt_time(record.get("end_time"))),
("DURATION", _duration(record.get("start_time"), record.get("end_time"))),
]
meta_table = Table(
[
[Paragraph(label, styles["meta_label"]), Paragraph(_esc(value), styles["meta_value"])]
for label, value in meta_rows
],
colWidths=[38 * mm, _PAGE_W - 40 * mm - 38 * mm],
)
meta_table.setStyle(
TableStyle(
[
("VALIGN", (0, 0), (-1, -1), "TOP"),
("LEFTPADDING", (0, 0), (-1, -1), 0),
("TOPPADDING", (0, 0), (-1, -1), 6),
("BOTTOMPADDING", (0, 0), (-1, -1), 6),
("LINEBELOW", (0, 0), (-1, -2), 0.5, _BORDER),
]
)
)
confidential = Table([[Paragraph("CONFIDENTIAL", styles["confidential"])]], colWidths=[120])
confidential.setStyle(
TableStyle(
[
("BACKGROUND", (0, 0), (-1, -1), _INK),
("TOPPADDING", (0, 0), (-1, -1), 8),
("BOTTOMPADDING", (0, 0), (-1, -1), 8),
("VALIGN", (0, 0), (-1, -1), "MIDDLE"),
]
)
)
confidential.hAlign = "CENTER"
return [
header,
Spacer(1, 150),
Paragraph("PENETRATION TEST REPORT", styles["badge_label"]),
Spacer(1, 20),
Paragraph("Security Assessment", styles["cover_title"]),
Paragraph(_esc(target), styles["cover_org"]),
Spacer(1, 28),
meta_table,
Spacer(1, 90),
confidential,
PageBreak(),
]
def _inline_md(text: str) -> str:
"""Convert inline markdown (bold, italic, `code`) to reportlab markup.
Code spans are stashed as placeholders before bold/italic run, so bold that
wraps a code span (``**`x`**``) works and code contents are never mangled.
"""
codes: list[str] = []
def _stash(match: re.Match[str]) -> str:
codes.append(match.group(1))
return f"\x00{len(codes) - 1}\x00"
seg = html.escape(re.sub(r"`([^`]+)`", _stash, text))
seg = re.sub(r"\*\*(.+?)\*\*", r"<b>\1</b>", seg)
seg = re.sub(r"__(.+?)__", r"<b>\1</b>", seg)
seg = re.sub(r"\*(.+?)\*", r"<i>\1</i>", seg)
def _restore(match: re.Match[str]) -> str:
inner = html.escape(codes[int(match.group(1))])
return f'<font face="{_MONO}" color="#b31d28">{inner}</font>'
return re.sub(r"\x00(\d+)\x00", _restore, seg)
def _strip_leading_heading(md: str) -> str:
"""Drop a single leading markdown heading (each section adds its own title)."""
lines = md.lstrip("\n").split("\n")
if lines and re.match(r"^#{1,6}\s+", lines[0].strip()):
return "\n".join(lines[1:]).lstrip("\n")
return md
def _markdown_flowables( # noqa: PLR0915 - cohesive block parser, splitting hurts clarity
md: str, styles: dict[str, ParagraphStyle]
) -> list[Flowable]:
"""Render a markdown block (headings, lists, fenced code, prose) to flowables."""
flow: list[Flowable] = []
para: list[str] = []
bullets: list[tuple[str, str]] = []
def flush_para() -> None:
if para:
flow.append(Paragraph(_inline_md(" ".join(para)), styles["body"]))
para.clear()
def flush_bullets() -> None:
for marker, item in bullets:
flow.append(Paragraph(f"{marker}&nbsp;{_inline_md(item)}", styles["bullet"]))
bullets.clear()
lines = md.replace("\r\n", "\n").split("\n")
i = 0
while i < len(lines):
stripped = lines[i].strip()
if stripped.startswith("```"):
flush_para()
flush_bullets()
i += 1
code: list[str] = []
while i < len(lines) and not lines[i].strip().startswith("```"):
code.append(lines[i])
i += 1
i += 1 # closing fence
flow.append(Paragraph(_esc("\n".join(code)) or "&nbsp;", styles["code"]))
continue
if not stripped:
flush_para()
flush_bullets()
i += 1
continue
heading = re.match(r"^(#{1,6})\s+(.*)$", stripped)
if heading:
flush_para()
flush_bullets()
flow.append(Paragraph(_inline_md(heading.group(2)), styles["md_heading"]))
i += 1
continue
ordered = re.match(r"^(\d+)\.\s+(.*)$", stripped)
unordered = re.match(r"^[-*+]\s+(.*)$", stripped)
if ordered:
flush_para()
bullets.append((f"{ordered.group(1)}.", ordered.group(2)))
i += 1
continue
if unordered:
flush_para()
bullets.append(("•", unordered.group(1)))
i += 1
continue
flush_bullets()
para.append(stripped)
i += 1
flush_para()
flush_bullets()
return flow
_FENCE_RE = re.compile(r"^```([^\n`]*)\n(.*?)\n?```$", re.DOTALL)
def _strip_code_fence(value: Any) -> Any:
"""Drop a wrapping markdown code fence so raw-code fields don't show the
``` ```lang ``` marker lines literally in the PDF."""
if not isinstance(value, str):
return value
match = _FENCE_RE.match(value.strip())
return match.group(2) if match else value
def _field_block(
styles: dict[str, ParagraphStyle], label: str, value: Any, *, code: bool = False
) -> list[Flowable]:
if value is None or (isinstance(value, str) and not value.strip()):
return []
flow: list[Flowable] = [Paragraph(label.upper(), styles["field_label"])]
if code:
flow.append(Paragraph(_esc(value), styles["code"]))
else:
flow.extend(_markdown_flowables(str(value), styles))
return flow
def _finding_flowables(
styles: dict[str, ParagraphStyle], index: int, vuln: dict[str, Any]
) -> list[Flowable]:
title = vuln.get("title") or "Untitled finding"
severity = str(vuln.get("severity") or "").lower().strip() or "low"
meta_bits = []
if vuln.get("cvss") is not None:
meta_bits.append(f"<b>CVSS</b> {_esc(vuln.get('cvss'))}")
meta_bits.extend(
f"<b>{key.title()}</b> {_esc(vuln.get(key))}"
for key in ("target", "endpoint", "method")
if vuln.get(key)
)
header: list[Flowable] = [
Paragraph(f"{index}. {_esc(title)}", styles["finding"]),
Spacer(1, 4),
_severity_badge(styles, severity),
]
if meta_bits:
header.append(Paragraph("&nbsp;&nbsp;".join(meta_bits), styles["meta_inline"]))
story: list[Flowable] = [KeepTogether(header)]
story.extend(_field_block(styles, "Description", vuln.get("description")))
story.extend(_field_block(styles, "Impact", vuln.get("impact")))
story.extend(_field_block(styles, "Technical analysis", vuln.get("technical_analysis")))
story.extend(_field_block(styles, "Proof of concept", vuln.get("poc_description")))
poc_script = _strip_code_fence(vuln.get("poc_script_code"))
story.extend(_field_block(styles, "PoC script", poc_script, code=True))
story.extend(_field_block(styles, "Evidence", vuln.get("evidence"), code=True))
remediation = vuln.get("remediation_steps")
if isinstance(remediation, list):
remediation = "\n".join(str(step) for step in remediation)
story.extend(_field_block(styles, "Remediation", remediation))
story.append(Spacer(1, 22))
return story
def _overview_flowables(
styles: dict[str, ParagraphStyle], record: dict[str, Any], total: int, counts: dict[str, int]
) -> list[Flowable]:
story: list[Flowable] = [
_section(styles, "Executive Summary"),
Spacer(1, 16),
_severity_grid(styles, counts),
Spacer(1, 10),
Paragraph(f"<b>{total}</b> total findings across this assessment.", styles["body"]),
]
scan_results = record.get("scan_results")
if not isinstance(scan_results, dict):
return story
summary = scan_results.get("executive_summary")
if isinstance(summary, str) and summary.strip():
story.append(Spacer(1, 16))
story.extend(_markdown_flowables(_strip_leading_heading(summary), styles))
for label, key in (
("Methodology", "methodology"),
("Technical Analysis", "technical_analysis"),
("Recommendations", "recommendations"),
):
value = scan_results.get(key)
if isinstance(value, str) and value.strip():
story.append(Spacer(1, 20))
story.append(_section(styles, label))
story.append(Spacer(1, 12))
story.extend(_markdown_flowables(_strip_leading_heading(value), styles))
return story
def generate_report_pdf(run_dir: Path) -> bytes:
"""Render a branded, full-detail PDF report for the run at ``run_dir``."""
record = read_run_summary(run_dir)
vulns = [v for v in read_vulnerabilities(run_dir) if isinstance(v, dict)]
counts = severity_counts(vulns)
run_name = str(record.get("run_name") or run_dir.name)
styles = _styles()
buffer = BytesIO()
doc = SimpleDocTemplate(
buffer,
pagesize=A4,
title="Strix Security Report",
author="Strix",
leftMargin=20 * mm,
rightMargin=20 * mm,
topMargin=22 * mm,
bottomMargin=24 * mm,
)
story: list[Flowable] = []
story.extend(_cover(styles, record, run_name))
story.extend(_overview_flowables(styles, record, len(vulns), counts))
story.append(PageBreak())
story.append(_section(styles, "Findings"))
story.append(Spacer(1, 16))
if vulns:
for index, vuln in enumerate(vulns, start=1):
story.extend(_finding_flowables(styles, index, vuln))
else:
story.append(Paragraph("No findings were recorded for this run.", styles["body"]))
doc.build(story, canvasmaker=_NumberedCanvas)
return buffer.getvalue()
def generate_password() -> str:
"""Return a >=20 character URL-safe password from a CSPRNG."""
return secrets.token_urlsafe(16)
def encrypt_pdf(pdf_bytes: bytes, password: str) -> bytes:
"""Encrypt a PDF with AES-256 using ``password`` as the user password."""
reader = PdfReader(BytesIO(pdf_bytes))
writer = PdfWriter()
writer.append(reader)
writer.encrypt(user_password=password, algorithm="AES-256")
out = BytesIO()
writer.write(out)
return out.getvalue()
def build_encrypted_report(run_dir: Path) -> tuple[bytes, str, str]:
"""Build, encrypt, and name the report. Returns (pdf_bytes, password, filename)."""
record = read_run_summary(run_dir)
run_name = str(record.get("run_name") or run_dir.name)
pdf_bytes = generate_report_pdf(run_dir)
password = generate_password()
encrypted = encrypt_pdf(pdf_bytes, password)
filename = f"strix-report-{run_name}.pdf"
return encrypted, password, filename
__all__ = [
"build_encrypted_report",
"encrypt_pdf",
"generate_password",
"generate_report_pdf",
]