def get_emergency_codes_image(request, **kwargs):
r_k = "emergency-nonce-for-%s" % request.browser.bid_public
if dcache.get(r_k) != kwargs["single_use_code"]:
custom_log(request, "emergency codes: invalid one-time code for output. Referrer: %s" % request.META.get("HTTP_REFERRER"), level="warn")
response = render_to_response("login_frontend/download_invalid_nonce.html", {}, context_instance=RequestContext(request))
response.status_code = "403"
response.reason_phrase = "Forbidden"
return response
dcache.delete(r_k)
codes = request.browser.user.get_emergency_codes()
if not codes or codes.codes_left() == 0:
custom_log(request, "Tried to download emergency codes; none available.", level="error")
raise Http404
font = PIL.ImageFont.truetype(settings.EMERGENCY_FONT, 17)
img = PIL.Image.new("RGB", (350, 35 + 10 + 35 * codes.codes_left()), (255,255,255))
draw = PIL.ImageDraw.Draw(img)
draw.text((10, 20), str(codes.generated_at), "black", font=font)
i = 1
for code in EmergencyCode.objects.all().filter(codegroup=codes).order_by("code_id"):
draw.text((10, 20 + i * 35), "#%s: %s" % (code.code_id, code.code_val), "black", font=font)
i += 1
stringio = StringIO()
img.save(stringio, "png")
stringio.seek(0)
codes.downloaded_at = timezone.now()
codes.downloaded_with = request.browser
codes.save()
response = HttpResponse(stringio.read(), content_type="image/png")
response['Content-Disposition'] = 'attachment; filename=emergency_codes.png'
add_user_log(request, "Downloaded emergency codes", "info")
custom_log(request, "Downloaded emergency codes", level="info")
new_emergency_generated_notify(request, codes)
return response
def get_emergency_codes_pdf(request, **kwargs):
r_k = "emergency-nonce-for-%s" % request.browser.bid_public
if dcache.get(r_k) != kwargs["single_use_code"]:
custom_log(request, "emergency codes: invalid one-time code for output. Referrer: %s" % request.META.get("HTTP_REFERRER"), level="warn")
response = render_to_response("login_frontend/download_invalid_nonce.html", {}, context_instance=RequestContext(request))
response.status_code = "403"
response.reason_phrase = "Forbidden"
return response
dcache.delete(r_k)
codes = request.browser.user.get_emergency_codes()
if not codes or codes.codes_left() == 0:
custom_log(request, "Tried to download emergency codes; none available.", level="error")
raise Http404
buffer = BytesIO()
p = canvas.Canvas(buffer, pagesize=A4, bottomup=0)
pdfmetrics.registerFont(TTFont('defaultfont', settings.EMERGENCY_FONT))
p.setFont('defaultfont', 20)
# Draw sheet timestamp (UTC) on top.
p.drawString(100,100, str(codes.generated_at))
i = 0
for code in EmergencyCode.objects.all().filter(codegroup=codes).order_by("code_id"):
# Add space every 5 characters to improve readability.
formatted_code = " ".join(textwrap.wrap(code.code_val, 5))
p.drawString(100, 150 + i * 35, "#%s: %s" % (code.code_id, formatted_code))
i += 1
codes.downloaded_at = timezone.now()
codes.downloaded_with = request.browser
codes.save()
p.showPage()
p.save()
pdf = buffer.getvalue()
buffer.close()
response = HttpResponse(content_type="application/pdf")
response['Content-Disposition'] = 'attachment; filename=emergency_codes.pdf'
response.write(pdf)
add_user_log(request, "Downloaded emergency codes", "info")
custom_log(request, "Downloaded emergency codes", level="info")
new_emergency_generated_notify(request, codes)
return response