Use command "locale charmap" to detect encoding

tests/sshserver.py

@@ -51,13 +51,12 @@ class Server(paramiko.ServerInterface):
             b'UWT10hcuO4Ks8=')
     good_pub_key = paramiko.RSAKey(data=decodebytes(data))
 
-    langs = ['en_US.UTF-8', 'zh_CN.GBK']
+    encodings = ['UTF-8', 'GBK']
 
     def __init__(self):
         self.shell_event = threading.Event()
         self.exec_event = threading.Event()
-        self.lang = random.choice(self.langs)
-        self.encoding = self.lang.split('.')[-1]
+        self.encoding = random.choice(self.encodings)
 
     def check_channel_request(self, kind, chanid):
         if kind == 'session':
@@ -82,12 +81,11 @@ class Server(paramiko.ServerInterface):
         return 'password,publickey'
 
     def check_channel_exec_request(self, channel, command):
-        if command != b'locale':
+        if command != b'locale charmap':
             ret = False
         else:
             ret = True
-            result = 'LANG={lang}\nLANGUAGE=\nLC_CTYPE="{lang}"\n'.format(lang=self.lang)  # noqa
-            channel.send(result)
+            channel.send(self.encoding)
             channel.shutdown(1)
         self.exec_event.set()
         return ret

tests/test_handler.py

@@ -3,24 +3,7 @@ import paramiko
 
 from tornado.httputil import HTTPServerRequest
 from tests.utils import read_file, make_tests_data_path
-from webssh.handler import (
-    MixinHandler, IndexHandler, parse_encoding, InvalidValueError
-)
-
-
-class TestHandler(unittest.TestCase):
-
-    def test_parse_encoding(self):
-        data = ''
-        self.assertIsNone(parse_encoding(data))
-        data = 'UTF-8'
-        self.assertEqual(parse_encoding(data), 'UTF-8')
-        data = 'en_US.UTF-8'
-        self.assertEqual(parse_encoding(data), 'UTF-8')
-        data = 'LANG=en_US.UTF-8\nLANGUAGE=\nLC_CTYPE="en_US.UTF-8"\n'
-        self.assertEqual(parse_encoding(data), 'UTF-8')
-        data = 'LANGUAGE=\nLC_CTYPE="en_US.UTF-8"\n'
-        self.assertEqual(parse_encoding(data), 'UTF-8')
+from webssh.handler import MixinHandler, IndexHandler, InvalidValueError
 
 
 class TestMixinHandler(unittest.TestCase):

webssh/handler.py

@@ -32,13 +32,6 @@ DELAY = 3
 KEY_MAX_SIZE = 16384
 
 
-def parse_encoding(data):
-    for line in data.split('\n'):
-        s = line.split('=')[-1]
-        if s:
-            return s.strip('"').split('.')[-1]
-
-
 class InvalidValueError(Exception):
     pass
 
@@ -176,12 +169,11 @@ class IndexHandler(MixinHandler, tornado.web.RequestHandler):
 
     def get_default_encoding(self, ssh):
         try:
-            _, stdout, _ = ssh.exec_command('locale')
+            _, stdout, _ = ssh.exec_command('locale charmap')
         except paramiko.SSHException:
             result = None
         else:
-            data = stdout.read()
-            result = parse_encoding(to_str(data))
+            result = to_str(stdout.read())
 
         return result if result else 'utf-8'