update api.py

jumpserver/api.py

@@ -94,6 +94,110 @@ def pages(post_objects, request):
     # 所有对象， 分页器， 本页对象， 所有页码， 本页页码，是否显示第一页，是否显示最后一页
     return post_objects, paginator, page_objects, page_range, current_page, show_first, show_end
 
+def check_vim_status(command, ssh):
+    global SSH_TTY
+    print command
+    if command == '':
+        return True
+    else:
+        command_str= 'ps -ef |grep "%s" | grep "%s"|grep -v grep |wc -l' % (command,SSH_TTY)
+        print command_str
+        stdin, stdout, stderr = ssh.exec_command(command_str)
+        ps_num = stdout.read()
+        print ps_num
+        if int(ps_num) == 0:
+            return True
+        else:
+            return False
+    
+
+def deal_command(str_r, ssh):
+    
+    """
+            处理命令中特殊字符
+    """
+    str_r = re.sub('\x07','',str_r)   #删除响铃
+    patch_char = re.compile('\x08\x1b\[C')      #删除方向左右一起的按键
+    while patch_char.search(str_r):
+        str_r = patch_char.sub('', str_r.rstrip())
+        
+    result_command = ''      #最后的结果
+    pattern_str = ''        #模式中间中的字符串
+    backspace_num = 0              #光标移动的个数
+    reach_backspace_flag = False    #没有检测到光标键则为true
+    end_flag = False
+    while str_r:
+        tmp = re.match(r'\w', str_r)
+        if tmp:
+            if reach_backspace_flag:
+                pattern_str += str(tmp.group(0))
+                str_r = str_r[1:]
+                continue
+            else:
+                result_command += str(tmp.group(0))
+                str_r = str_r[1:]
+                continue
+            
+        tmp = re.match(r'\x1b\[K[\x08]*', str_r)
+        if tmp:
+            if backspace_num > 0:
+                if backspace_num > len(result_command) :
+                    result_command += pattern_str
+                    result_command = result_command[0:-backspace_num]
+                else:
+                    result_command = result_command[0:-backspace_num]
+                    result_command += pattern_str
+            del_len = len(str(tmp.group(0)))-3
+            if del_len > 0:
+                result_command = result_command[0:-del_len]
+            reach_backspace_flag = False
+            backspace_num =0
+            pattern_str=''
+            str_r = str_r[len(str(tmp.group(0))):]
+            continue
+        if re.match(r'\x08', str_r):
+            backspace_num += 1
+            reach_backspace_flag = True
+            str_r = str_r[1:]
+            if len(str_r) == 0:
+                end_flag = True
+            continue
+        if reach_backspace_flag :
+            pattern_str += str_r[0]
+        else :
+            result_command += str_r[0]
+        str_r = str_r[1:]  
+    
+    if backspace_num > 0 and not end_flag:
+        result_command = result_command[:-backspace_num]
+        result_command += pattern_str
+    
+    
+    
+    control_char = re.compile(r"""
+            \x1b[ #%()*+\-.\/]. |
+            \r |                                               #匹配 回车符(CR)
+            (?:\x1b\[|\x9b) [ -?]* [@-~] |                     #匹配 控制顺序描述符(CSI)... Cmd
+            (?:\x1b\]|\x9d) .*? (?:\x1b\\|[\a\x9c]) | \x07 |   #匹配 操作系统指令(OSC)...终止符或振铃符(ST|BEL)
+            (?:\x1b[P^_]|[\x90\x9e\x9f]) .*? (?:\x1b\\|\x9c) | #匹配 设备控制串或私讯或应用程序命令(DCS|PM|APC)...终止符(ST)
+            \x1b.                                              #匹配 转义过后的字符
+            [\x80-\x9f]                                        #匹配 所有控制字符
+            """, re.X)
+    result_command = control_char.sub('', result_command.strip())
+    global VIM_FLAG
+    global VIM_COMMAND
+    if not VIM_FLAG:
+        if result_command.startswith('vim'):
+            VIM_FLAG = True
+            VIM_COMMAND = result_command
+        return result_command.decode('utf8',"ignore")
+    else:
+        if check_vim_status(VIM_COMMAND, ssh):
+            VIM_FLAG = False
+            VIM_COMMAND=''
+            return result_command.decode('utf8',"ignore")
+        else:
+            return ''
 
 def remove_control_char(str_r):
     """
@@ -194,7 +298,7 @@ class Jtty(object):
         log.save()
         return log_file_f, log_time_f, ip_list, log
 
-    def posix_shell(self):
+    def posix_shell(self,ssh):
         """
         Use paramiko channel connect server interactive.
         使用paramiko模块的channel，连接后端，进入交互式
@@ -242,7 +346,7 @@ class Jtty(object):
                         input_mode = True
 
                     if str(x) in ['\r', '\n', '\r\n']:
-                        input_r = remove_control_char(input_r)
+                        input_r = deal_command(input_r,ssh)
                         TtyLog(log=log, datetime=datetime.datetime.now(), cmd=input_r).save()
                         input_r = ''
                         input_mode = False
@@ -316,11 +420,19 @@ class Jtty(object):
             pass
 
         # 设置PS1并提示 Set PS1 and msg it
-        channel.send(ps1)
-        channel.send(login_msg)
-
+        #channel.send(ps1)
+        #channel.send(login_msg)
+        channel.send('echo ${SSH_TTY}\n')
+        global SSH_TTY
+        while not channel.recv_ready():
+            time.sleep(1)
+        tmp = channel.recv(1024)
+        #print 'ok'+tmp+'ok'
+        SSH_TTY  = re.search(r'(?<=/dev/).*', tmp).group().strip()
+        
+        channel.send('clear\n')
         # Make ssh interactive tunnel
-        self.posix_shell()
+        self.posix_shell(ssh)
 
         # Shutdown channel socket
         channel.close()