Merge branch 'master' into python3

[wrw.git] / wrw / form.py

diff --git a/wrw/form.py b/wrw/form.py
index 3bad8fc..7184635 100644 (file)
--- a/wrw/form.py
+++ b/wrw/form.py
@@ -1,16 +1,16 @@
-import urlparse
-import proto
+import urllib.parse
+from . import proto
 
 __all__ = ["formdata"]
 
 def formparse(req):
     buf = {}
-    buf.update(urlparse.parse_qsl(req.query))
+    buf.update(urllib.parse.parse_qsl(req.query))
     if req.ihead.get("Content-Type") == "application/x-www-form-urlencoded":
         if req.input.limit > 2 ** 20:
             raise ValueError("x-www-form-urlencoded data is absurdly long")
         rbody = req.input.read()
-        buf.update(urlparse.parse_qsl(rbody))
+        buf.update(urllib.parse.parse_qsl(rbody))
     return buf
 
 class badmultipart(Exception):
@@ -19,7 +19,7 @@ class badmultipart(Exception):
 class formpart(object):
     def __init__(self, form):
         self.form = form
-        self.buf = ""
+        self.buf = b""
         self.eof = False
         self.head = {}
 
@@ -28,8 +28,8 @@ class formpart(object):
 
     def fillbuf(self, sz):
         req = self.form.req
-        mboundary = "\r\n--" + self.form.boundary + "\r\n"
-        lboundary = "\r\n--" + self.form.boundary + "--\r\n"
+        mboundary = b"\r\n--" + self.form.boundary + b"\r\n"
+        lboundary = b"\r\n--" + self.form.boundary + b"--\r\n"
         while not self.eof:
             p = self.form.buf.find(mboundary)
             if p >= 0:
@@ -67,7 +67,7 @@ class formpart(object):
     def readline(self, limit=-1):
         last = 0
         while True:
-            p = self.buf.find('\n', last)
+            p = self.buf.find(b'\n', last)
             if p < 0:
                 if self.eof:
                     ret = self.buf
@@ -90,12 +90,15 @@ class formpart(object):
         self.close()
         return False
 
-    def parsehead(self):
+    def parsehead(self, charset):
         def headline():
             ln = self.readline(256)
-            if ln[-1] != '\n':
+            if ln[-1] != ord(b'\n'):
                 raise badmultipart("Too long header line in part")
-            return ln.rstrip()
+            try:
+                return ln.decode(charset).rstrip()
+            except UnicodeError:
+                raise badmultipart("Form part header is not in assumed charset")
 
         ln = headline()
         while True:
@@ -127,29 +130,33 @@ class formpart(object):
             raise badmultipart("Form part uses unexpected transfer encoding: %r" % encoding)
 
 class multipart(object):
-    def __init__(self, req):
+    def __init__(self, req, charset):
         val, par = proto.pmimehead(req.ihead.get("Content-Type", ""))
         if req.method != "POST" or val != "multipart/form-data":
             raise badmultipart("Request is not a multipart form")
         if "boundary" not in par:
             raise badmultipart("Multipart form lacks boundary")
-        self.boundary = par["boundary"]
+        try:
+            self.boundary = par["boundary"].encode("us-ascii")
+        except UnicodeError:
+            raise badmultipart("Multipart boundary must be ASCII string")
         self.req = req
-        self.buf = "\r\n"
+        self.buf = b"\r\n"
         self.eof = False
+        self.headcs = charset
         self.lastpart = formpart(self)
         self.lastpart.close()
 
     def __iter__(self):
         return self
 
-    def next(self):
+    def __next__(self):
         if not self.lastpart.eof:
             raise RuntimeError("All form parts must be read entirely")
         if self.eof:
             raise StopIteration()
         self.lastpart = formpart(self)
-        self.lastpart.parsehead()
+        self.lastpart.parsehead(self.headcs)
         return self.lastpart
 
 def formdata(req):