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280 lines (259 loc) · 11.6 KB
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diff --git a/Lib/cgi.py b/Lib/cgi.py
index 5b903e0347739c..cde28cc91b7883 100755
--- a/Lib/cgi.py
+++ b/Lib/cgi.py
@@ -121,7 +121,8 @@ def nolog(*allargs):
# 0 ==> unlimited input
maxlen = 0
-def parse(fp=None, environ=os.environ, keep_blank_values=0, strict_parsing=0):
+def parse(fp=None, environ=os.environ, keep_blank_values=0, strict_parsing=0,
+ separator='&'):
"""Parse a query in the environment or from a file (default stdin)
Arguments, all optional:
@@ -140,6 +141,9 @@ def parse(fp=None, environ=os.environ, keep_blank_values=0, strict_parsing=0):
strict_parsing: flag indicating what to do with parsing errors.
If false (the default), errors are silently ignored.
If true, errors raise a ValueError exception.
+
+ separator: str. The symbol to use for separating the query arguments.
+ Defaults to &.
"""
if fp is None:
fp = sys.stdin
@@ -148,7 +152,7 @@ def parse(fp=None, environ=os.environ, keep_blank_values=0, strict_parsing=0):
if environ['REQUEST_METHOD'] == 'POST':
ctype, pdict = parse_header(environ['CONTENT_TYPE'])
if ctype == 'multipart/form-data':
- return parse_multipart(fp, pdict)
+ return parse_multipart(fp, pdict, separator=separator)
elif ctype == 'application/x-www-form-urlencoded':
clength = int(environ['CONTENT_LENGTH'])
if maxlen and clength > maxlen:
@@ -171,7 +175,7 @@ def parse(fp=None, environ=os.environ, keep_blank_values=0, strict_parsing=0):
else:
qs = ""
environ['QUERY_STRING'] = qs # XXX Shouldn't, really
- return urlparse.parse_qs(qs, keep_blank_values, strict_parsing)
+ return urlparse.parse_qs(qs, keep_blank_values, strict_parsing, separator=separator)
# parse query string function called from urlparse,
@@ -191,7 +195,7 @@ def parse_qsl(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None):
return urlparse.parse_qsl(qs, keep_blank_values, strict_parsing,
max_num_fields)
-def parse_multipart(fp, pdict):
+def parse_multipart(fp, pdict, separator='&'):
"""Parse multipart input.
Arguments:
@@ -395,7 +399,7 @@ class FieldStorage:
def __init__(self, fp=None, headers=None, outerboundary="",
environ=os.environ, keep_blank_values=0, strict_parsing=0,
- max_num_fields=None):
+ max_num_fields=None, separator='&'):
"""Constructor. Read multipart/* until last part.
Arguments, all optional:
@@ -430,6 +434,7 @@ def __init__(self, fp=None, headers=None, outerboundary="",
self.keep_blank_values = keep_blank_values
self.strict_parsing = strict_parsing
self.max_num_fields = max_num_fields
+ self.separator = separator
if 'REQUEST_METHOD' in environ:
method = environ['REQUEST_METHOD'].upper()
self.qs_on_post = None
@@ -613,7 +618,8 @@ def read_urlencoded(self):
if self.qs_on_post:
qs += '&' + self.qs_on_post
query = urlparse.parse_qsl(qs, self.keep_blank_values,
- self.strict_parsing, self.max_num_fields)
+ self.strict_parsing, self.max_num_fields,
+ self.separator)
self.list = [MiniFieldStorage(key, value) for key, value in query]
self.skip_lines()
@@ -629,7 +635,8 @@ def read_multi(self, environ, keep_blank_values, strict_parsing):
query = urlparse.parse_qsl(self.qs_on_post,
self.keep_blank_values,
self.strict_parsing,
- self.max_num_fields)
+ self.max_num_fields,
+ self.separator)
self.list.extend(MiniFieldStorage(key, value)
for key, value in query)
FieldStorageClass = None
@@ -649,7 +656,7 @@ def read_multi(self, environ, keep_blank_values, strict_parsing):
headers = rfc822.Message(self.fp)
part = klass(self.fp, headers, ib,
environ, keep_blank_values, strict_parsing,
- max_num_fields)
+ max_num_fields, self.separator)
if max_num_fields is not None:
max_num_fields -= 1
diff --git a/Lib/test/test_cgi.py b/Lib/test/test_cgi.py
index 743c2afbd4cd24..597260275337f0 100644
--- a/Lib/test/test_cgi.py
+++ b/Lib/test/test_cgi.py
@@ -61,12 +61,9 @@ def do_test(buf, method):
("", ValueError("bad query field: ''")),
("&", ValueError("bad query field: ''")),
("&&", ValueError("bad query field: ''")),
- (";", ValueError("bad query field: ''")),
- (";&;", ValueError("bad query field: ''")),
# Should the next few really be valid?
("=", {}),
("=&=", {}),
- ("=;=", {}),
# This rest seem to make sense
("=a", {'': ['a']}),
("&=a", ValueError("bad query field: ''")),
@@ -81,8 +78,6 @@ def do_test(buf, method):
("a=a+b&b=b+c", {'a': ['a b'], 'b': ['b c']}),
("a=a+b&a=b+a", {'a': ['a b', 'b a']}),
("x=1&y=2.0&z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
- ("x=1;y=2.0&z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
- ("x=1;y=2.0;z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
("Hbc5161168c542333633315dee1182227:key_store_seqid=400006&cuyer=r&view=bustomer&order_id=0bb2e248638833d48cb7fed300000f1b&expire=964546263&lobale=en-US&kid=130003.300038&ss=env",
{'Hbc5161168c542333633315dee1182227:key_store_seqid': ['400006'],
'cuyer': ['r'],
@@ -104,6 +99,18 @@ def do_test(buf, method):
})
]
+parse_semicolon_test_cases = [
+ ("x=1;y=2.0", {'x': ['1'], 'y': ['2.0']}),
+ ("x=1;y=2.0;z=2-3.%2b0", {'x': ['1'], 'y': ['2.0'], 'z': ['2-3.+0']}),
+ (";", ValueError("bad query field: ''")),
+ (";;", ValueError("bad query field: ''")),
+ ("=;a", ValueError("bad query field: 'a'")),
+ (";b=a", ValueError("bad query field: ''")),
+ ("b;=a", ValueError("bad query field: 'b'")),
+ ("a=a+b;b=b+c", {'a': ['a b'], 'b': ['b c']}),
+ ("a=a+b;a=b+a", {'a': ['a b', 'b a']}),
+]
+
def first_elts(list):
return map(lambda x:x[0], list)
@@ -177,6 +184,23 @@ def test_strict(self):
self.assertItemsEqual(sd.items(),
first_second_elts(expect.items()))
+ def test_separator(self):
+ for orig, expect in parse_semicolon_test_cases:
+ env = {'QUERY_STRING': orig}
+ try:
+ fs = cgi.FieldStorage(separator=';', environ=env, strict_parsing=True)
+ except ValueError as ve:
+ self.assertEqual(type(ve), type(expect))
+ self.assertEqual(ve.args, expect.args)
+ else:
+ for key in expect.keys():
+ expect_val = expect[key]
+ self.assertIn(key, fs)
+ if len(expect_val) > 1:
+ self.assertEqual(fs.getvalue(key), expect_val)
+ else:
+ self.assertEqual(fs.getvalue(key), expect_val[0])
+
def test_weird_formcontentdict(self):
# Test the weird FormContentDict classes
env = {'QUERY_STRING': "x=1&y=2.0&z=2-3.%2b0&1=1abc"}
diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index 86c4a0595c4f6b..3c7fc9217f576c 100644
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -24,6 +24,13 @@
("&a=b", [('a', 'b')]),
("a=a+b&b=b+c", [('a', 'a b'), ('b', 'b c')]),
("a=1&a=2", [('a', '1'), ('a', '2')]),
+ (";a=b", [(';a', 'b')]),
+ ("a=a+b;b=b+c", [('a', 'a b;b=b c')]),
+ (b";a=b", [(b';a', b'b')]),
+ (b"a=a+b;b=b+c", [(b'a', b'a b;b=b c')]),
+]
+
+parse_qsl_semicolon_cases = [
(";", []),
(";;", []),
(";a=b", [('a', 'b')]),
@@ -57,6 +64,13 @@
(b"&a=b", {b'a': [b'b']}),
(b"a=a+b&b=b+c", {b'a': [b'a b'], b'b': [b'b c']}),
(b"a=1&a=2", {b'a': [b'1', b'2']}),
+ (";a=b", {';a': ['b']}),
+ ("a=a+b;b=b+c", {'a': ['a b;b=b c']}),
+ (b";a=b", {b';a': [b'b']}),
+ (b"a=a+b;b=b+c", {b'a': [b'a b;b=b c']}),
+]
+
+parse_qs_semicolon_cases = [
(";", {}),
(";;", {}),
(";a=b", {'a': ['b']}),
@@ -141,6 +155,16 @@ def test_qs(self):
self.assertEqual(result, expect_without_blanks,
"Error parsing %r" % orig)
+ def test_parse_qsl_separator(self):
+ for orig, expect in parse_qsl_semicolon_cases:
+ result = urlparse.parse_qsl(orig, separator=';')
+ self.assertEqual(result, expect, "Error parsing %r" % orig)
+
+ def test_parse_qs_separator(self):
+ for orig, expect in parse_qs_semicolon_cases:
+ result = urlparse.parse_qs(orig, separator=';')
+ self.assertEqual(result, expect, "Error parsing %r" % orig)
+
def test_roundtrips(self):
testcases = [
('file:///tmp/junk.txt',
diff --git a/Lib/urlparse.py b/Lib/urlparse.py
index 798b467b605f73..316dc3c6ebec49 100644
--- a/Lib/urlparse.py
+++ b/Lib/urlparse.py
@@ -382,7 +382,8 @@ def unquote(s):
append(item)
return ''.join(res)
-def parse_qs(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None):
+def parse_qs(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None,
+ separator='&'):
"""Parse a query given as a string argument.
Arguments:
@@ -402,17 +403,21 @@ def parse_qs(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None):
max_num_fields: int. If set, then throws a ValueError if there
are more than n fields read by parse_qsl().
+
+ separator: str. The symbol to use for separating the query arguments.
+ Defaults to &.
"""
dict = {}
for name, value in parse_qsl(qs, keep_blank_values, strict_parsing,
- max_num_fields):
+ max_num_fields, separator):
if name in dict:
dict[name].append(value)
else:
dict[name] = [value]
return dict
-def parse_qsl(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None):
+def parse_qsl(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None,
+ separator='&'):
"""Parse a query given as a string argument.
Arguments:
@@ -432,17 +437,24 @@ def parse_qsl(qs, keep_blank_values=0, strict_parsing=0, max_num_fields=None):
max_num_fields: int. If set, then throws a ValueError if there
are more than n fields read by parse_qsl().
+ separator: str. The symbol to use for separating the query arguments.
+ Defaults to &.
+
Returns a list, as G-d intended.
"""
+ if not separator or (not isinstance(separator, str)
+ and not isinstance(separator, bytes)):
+ raise ValueError("Separator must be of type string or bytes.")
+
# If max_num_fields is defined then check that the number of fields
# is less than max_num_fields. This prevents a memory exhaustion DOS
# attack via post bodies with many fields.
if max_num_fields is not None:
- num_fields = 1 + qs.count('&') + qs.count(';')
+ num_fields = 1 + qs.count(separator)
if max_num_fields < num_fields:
raise ValueError('Max number of fields exceeded')
- pairs = [s2 for s1 in qs.split('&') for s2 in s1.split(';')]
+ pairs = [s for s in qs.split(separator)]
r = []
for name_value in pairs:
if not name_value and not strict_parsing: