1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
# -*- coding: utf-8 -*-
#
# cms.py - simple WSGI/Python based CMS script
#
# Copyright (C) 2011-2019 Michael Buesch <m@bues.ch>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#from cms.cython_support cimport * #@cy
from cms.exception import *
from cms.util import * #+cimport
import cgi
__all__ = [
"CMSFormFields",
]
class CMSFormFields(object):
"""Form field parser.
"""
__slots__ = (
"__fields",
)
defaultCharset = LOWERCASE + UPPERCASE + NUMBERS + "-_. "
defaultCharsetBool = LOWERCASE + UPPERCASE + NUMBERS + " "
defaultCharsetInt = NUMBERS + " xXabcdefABCDEF-"
def __init__(self, body, bodyType):
try:
self.__fields = cgi.FieldStorage(
fp=BytesIO(body),
environ={
"CONTENT_LENGTH" : str(len(body)),
"CONTENT_TYPE" : bodyType,
"REQUEST_METHOD" : "POST",
},
encoding="UTF-8",
errors="strict",
)
except Exception as e:
raise CMSException(400, "Cannot parse form data.")
def getStr(self, name, default="", maxlen=32, charset=defaultCharset):
"""Get a form field.
Returns a str.
"""
field = self.__fields.getfirst(name, default)
if field is None:
return None
if maxlen is not None and len(field) > maxlen:
raise CMSException(400, "%s is too long." % name)
if charset is not None and [ c for c in field if c not in charset ]:
raise CMSException(400, "Invalid character in %s" % name)
return field
def getBool(self, name, default=False, maxlen=32, charset=defaultCharsetBool):
"""Get a form field.
Returns a bool.
"""
field = self.getStr(name, None, maxlen, charset)
if field is None:
return default
return stringBool(field, default)
def getInt(self, name, default=0, maxlen=32, charset=defaultCharsetInt):
"""Get a form field.
Returns an int.
"""
field = self.getStr(name, None, maxlen, charset)
if field is None:
return default
try:
field = field.lower().strip()
if field.startswith("0x"):
return int(field[2:], 16)
return int(field)
except ValueError:
return default
|
