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#!/usr/bin/env python3
import os
import sys
from urllib import parse
import multipart # https://github.com/andrew-d/python-multipart (`apt install python3-multipart`)
try: # Windows needs stdio set for binary mode.
import msvcrt
msvcrt.setmode(0, os.O_BINARY) # stdin = 0
msvcrt.setmode(1, os.O_BINARY) # stdout = 1
except ImportError:
pass
def get_request_params():
oforms = {}
ofiles = {}
if "REQUEST_URI" in os.environ:
qforms = parse.parse_qs(parse.urlsplit(os.environ["REQUEST_URI"]).query)
for name, values in qforms.items():
oforms[name] = values[0]
if "HTTP_CONTENT_TYPE" in os.environ:
ctype = os.environ["HTTP_CONTENT_TYPE"]
if ctype == "application/x-www-form-urlencoded":
qforms = parse.parse_qs(parse.urlsplit(sys.stdin.read()).query)
for name, values in qforms.items():
oforms[name] = values[0]
elif ctype.startswith("multipart/"):
def on_field(field):
oforms[field.field_name] = field.value
def on_file(file):
ofiles[field.field_name] = field.value
multipart.parse_form(headers={"Content-Type": ctype}, input_stream=sys.stdin.buffer, on_field=on_field, on_file=on_file)
return oforms, ofiles
forms, files = get_request_params()
status = '200 Ok'
# Test if the file was uploaded
if 'file' in files:
fitem = files['file']
# strip leading path from file name to avoid directory traversal attacks
fname = fitem.filename
fpath = f'{os.environ["DOCUMENT_ROOT"]}/files/{fname}'
fitem.save_as(fpath)
message = "The file %s was uploaded successfully" % (fname)
print("Status: 201 Created")
print("Content-Type: text/html")
print("Location: %s://%s/files/%s" % (os.environ["REQUEST_SCHEME"], os.environ["HTTP_HOST"], fname))
print("")
print("<html><body><p>%s</p></body></html>" % (message))
elif 'remove' in forms:
remove = forms['remove']
try:
fname = os.path.basename(remove)
os.remove('./files/' + fname)
message = 'The file "' + fname + '" was removed successfully'
except OSError as e:
message = 'Error removing ' + fname + ': ' + e.strerror
status = '404 File Not Found'
print("Status: %s" % (status))
print("""
Content-Type: text/html
<html><body>
<p>%s</p>
</body></html>""" % (message))
else:
message = '''\
Upload File<form method="POST" enctype="multipart/form-data">
<input type="file" name="file">
<button type="submit">Upload</button></form>
'''
print("Status: %s" % (status))
print("""\
Content-Type: text/html
<html><body>
<p>%s</p>
</body></html>""" % (message))
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