Merge an updated version of #418. Fixes #418.

gevent/ares.pyx

@@ -7,12 +7,15 @@ from _socket import gaierror
 
 __all__ = ['channel']
 
-cdef object basestring
+cdef object string_types
+cdef object text_type
 
 if sys.version_info[0] >= 3:
-    basestring = (bytes, str)
+    string_types = str,
+    text_type = str
 else:
-    basestring = __builtins__.basestring
+    string_types = __builtins__.basestring,
+    text_type = __builtins__.unicode
 
 TIMEOUT = 1
 
@@ -34,12 +37,13 @@ cdef extern from "dnshelper.c":
     struct ares_channeldata:
         pass
 
+    object parse_h_name(hostent*)
     object parse_h_aliases(hostent*)
     object parse_h_addr_list(hostent*)
     void* create_object_from_hostent(void*)
 
     # this imports _socket lazily
-    object PyBytes_FromString(char*)
+    object PyUnicode_FromString(char*)
     int PyTuple_Check(object)
     int PyArg_ParseTuple(object, char*, ...) except 0
     struct sockaddr_in6:
@@ -205,7 +209,7 @@ cdef void gevent_ares_host_callback(void *arg, int status, int timeouts, hostent
             callback(result(None, gaierror(status, strerror(status))))
         else:
             try:
-                host_result = ares_host_result(host.h_addrtype, (host.h_name, parse_h_aliases(host), parse_h_addr_list(host)))
+                host_result = ares_host_result(host.h_addrtype, (parse_h_name(host), parse_h_aliases(host), parse_h_addr_list(host)))
             except:
                 callback(result(None, sys.exc_info()[1]))
             else:
@@ -226,11 +230,11 @@ cdef void gevent_ares_nameinfo_callback(void *arg, int status, int timeouts, cha
             callback(result(None, gaierror(status, strerror(status))))
         else:
             if c_node:
-                node = PyBytes_FromString(c_node)
+                node = PyUnicode_FromString(c_node)
             else:
                 node = None
             if c_service:
-                service = PyBytes_FromString(c_service)
+                service = PyUnicode_FromString(c_service)
             else:
                 service = None
             callback(result((node, service)))
@@ -312,7 +316,7 @@ cdef public class channel [object PyGeventAresChannelObject, type PyGeventAresCh
             raise gaierror(cares.ARES_EDESTRUCTION, 'this ares channel has been destroyed')
         if not servers:
             servers = []
-        if isinstance(servers, basestring):
+        if isinstance(servers, string_types):
             servers = servers.split(',')
         cdef int length = len(servers)
         cdef int result, index
@@ -327,8 +331,8 @@ cdef public class channel [object PyGeventAresChannelObject, type PyGeventAresCh
             try:
                 index = 0
                 for server in servers:
-                    if isinstance(server, str):
-                        server = server.encode()
+                    if isinstance(server, unicode):
+                        server = server.encode('ascii')
                     string = <char*?>server
                     if cares.ares_inet_pton(AF_INET, string, &c_servers[index].addr) > 0:
                         c_servers[index].family = AF_INET

gevent/dnshelper.c

@@ -14,7 +14,9 @@
 #include "cares_pton.h"
 
 #if PY_VERSION_HEX < 0x02060000
-  #define PyBytes_FromString           PyString_FromString
+  #define PyUnicode_FromString         PyString_FromString
+#elif PY_MAJOR_VERSION < 3
+  #define PyUnicode_FromString         PyBytes_FromString
 #endif
 
 
@@ -49,7 +51,7 @@ gevent_append_addr(PyObject* list, int family, void* src, char* tmpbuf, size_t t
     int status = -1;
     PyObject* tmp;
     if (ares_inet_ntop(family, src, tmpbuf, tmpsize)) {
-        tmp = PyBytes_FromString(tmpbuf);
+        tmp = PyUnicode_FromString(tmpbuf);
         if (tmp) {
             status = PyList_Append(list, tmp);
             Py_DECREF(tmp);
@@ -59,6 +61,13 @@ gevent_append_addr(PyObject* list, int family, void* src, char* tmpbuf, size_t t
 }
 
 
+static PyObject*
+parse_h_name(struct hostent *h)
+{
+    return PyUnicode_FromString(h->h_name);
+}
+
+
 static PyObject*
 parse_h_aliases(struct hostent *h)
 {
@@ -72,7 +81,7 @@ parse_h_aliases(struct hostent *h)
         for (pch = h->h_aliases; *pch != NULL; pch++) {
             if (*pch != h->h_name && strcmp(*pch, h->h_name)) {
                 int status;
-                tmp = PyBytes_FromString(*pch);
+                tmp = PyUnicode_FromString(*pch);
                 if (tmp == NULL) {
                     break;
                 }

gevent/resolver_ares.py

 # Copyright (c) 2011 Denis Bilenko. See LICENSE for details.
 from __future__ import absolute_import
 import os
+import sys
 from _socket import getservbyname, getaddrinfo, gaierror, error
-from gevent.hub import Waiter, get_hub, string_types, text_type
+from gevent.hub import Waiter, get_hub, string_types, text_type, reraise, PY3
 from gevent.socket import AF_UNSPEC, AF_INET, AF_INET6, SOCK_STREAM, SOCK_DGRAM, SOCK_RAW, AI_NUMERICHOST, EAI_SERVICE, AI_PASSIVE
 from gevent.ares import channel, InvalidIP
 
@@ -19,7 +20,7 @@ class Resolver(object):
             hub = get_hub()
         self.hub = hub
         if use_environ:
-            for key in os.environ.keys():
+            for key in os.environ:
                 if key.startswith('GEVENTARES_'):
                     name = key[11:].lower()
                     if name:
@@ -52,10 +53,16 @@ class Resolver(object):
         return self.gethostbyname_ex(hostname, family)[-1][0]
 
     def gethostbyname_ex(self, hostname, family=AF_INET):
-        if isinstance(hostname, text_type):
-            hostname = hostname.encode('ascii')
-        elif not isinstance(hostname, str):
-            raise TypeError('Expected string, not %s' % type(hostname).__name__)
+        if PY3:
+            if isinstance(hostname, str):
+                hostname = hostname.encode('idna')
+            elif not isinstance(hostname, (bytes, bytearray)):
+                raise TypeError('Expected es(idna), not %s' % type(hostname).__name__)
+        else:
+            if isinstance(hostname, text_type):
+                hostname = hostname.encode('ascii')
+            elif not isinstance(hostname, str):
+                raise TypeError('Expected string, not %s' % type(hostname).__name__)
 
         while True:
             ares = self.ares
@@ -191,10 +198,16 @@ class Resolver(object):
                     raise
 
     def _gethostbyaddr(self, ip_address):
-        if isinstance(ip_address, text_type):
-            ip_address = ip_address.encode('ascii')
-        elif not isinstance(ip_address, str):
-            raise TypeError('Expected string, not %s' % type(ip_address).__name__)
+        if PY3:
+            if isinstance(ip_address, str):
+                ip_address = ip_address.encode('idna')
+            elif not isinstance(ip_address, (bytes, bytearray)):
+                raise TypeError('Expected es(idna), not %s' % type(ip_address).__name__)
+        else:
+            if isinstance(ip_address, text_type):
+                ip_address = ip_address.encode('ascii')
+            elif not isinstance(ip_address, str):
+                raise TypeError('Expected string, not %s' % type(ip_address).__name__)
 
         waiter = Waiter(self.hub)
         try:
@@ -205,11 +218,11 @@ class Resolver(object):
             if not result:
                 raise
             _ip_address = result[0][-1][0]
+            if isinstance(_ip_address, text_type):
+                _ip_address = _ip_address.encode('ascii')
             if _ip_address == ip_address:
                 raise
             waiter.clear()
-            if isinstance(_ip_address, text_type):
-                _ip_address = _ip_address.encode('ascii')
             self.ares.gethostbyaddr(waiter, _ip_address)
             return waiter.get()
 
@@ -230,10 +243,10 @@ class Resolver(object):
             raise TypeError('getnameinfo() argument 1 must be a tuple')
 
         address = sockaddr[0]
-        if isinstance(address, text_type):
+        if not PY3 and isinstance(address, text_type):
             address = address.encode('ascii')
 
-        if not isinstance(address, str):
+        if not isinstance(address, string_types):
             raise TypeError('sockaddr[0] must be a string, not %s' % type(address).__name__)
 
         port = sockaddr[1]
@@ -243,7 +256,7 @@ class Resolver(object):
         waiter = Waiter(self.hub)
         result = self._getaddrinfo(address, str(sockaddr[1]), family=AF_UNSPEC, socktype=SOCK_DGRAM)
         if not result:
-            raise
+            reraise(*sys.exc_info())
         elif len(result) != 1:
             raise error('sockaddr resolved to multiple addresses')
         family, socktype, proto, name, address = result[0]