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#!/usr/bin/python3
import cgi
import cgitb
import sys
cgitb.enable()
import os
from io import BytesIO
auth = os.getenv("HTTP_AUTHORIZATION")
query = os.getenv("QUERY_STRING") or ""
query = cgi.parse_qs(query)
width = query.get("width", ["100"])[0]
height = query.get("height", ["100"])[0]
fmt = query.get("format", "png")[0]
try:
width = int(width)
except:
width = 100
try:
height = int(height)
except:
height = 100
width = width if width > 0 else 100
height = height if height > 0 else 100
width = width if width < 4000 else 4000
height = height if height < 4000 else 4000
FORMATS = {
"png": { "ctype": "image/png", "ptype": "png" },
"jpeg": { "ctype": "image/jpeg", "ptype": "jpeg" },
"bmp": { "ctype": "image/bmp", "ptype": "bmp" },
"ico": { "ctype": "image/ico", "ptype": "ico" },
"gif": { "ctype": "image/gif", "ptype": "gif" },
"webp": { "ctyle": "image/webp", "ptype": "webp" },
}
fmt = FORMATS.get(fmt)
if fmt is None:
fmt = FORMATS["png"]
from PIL import Image
im = Image.new('RGB', (width, height))
im.putdata([(255,0,0)] * (width * height))
print("Content-Type: {}".format(fmt["ctype"]))
print("")
sys.stdout.flush()
imgbytes = BytesIO()
im.save(fp=imgbytes, format=fmt["ptype"])
sys.stdout.buffer.write(imgbytes.getvalue())
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