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socket小练习:通过server端,执行cmd命令

时间:2020-02-22 13:50:58      阅读:68      评论:0      收藏:0      [点我收藏+]

标签:内存   end   add   返回   byte   sock   upd   result   connect   

一、实现过程:

步骤一:server 端建立socket对象,并绑定Ip和端口号

步骤二:client建立对象,并与server端连接

步骤三:client发送指令,server接受执行,得到结果并返回给client

核心:一收一发,一收一发,一收一发,重要的事情说三遍

二、知识点总结:

1、server模块常用方法

socket() #建立socket对象
bind() #绑定IP地址,端口号
listen() #监听排队人数
accept() #等待客户机连接,未连接时为阻塞状态
send() \ sendall() #发送bytes类型数据
recv(1024) #接受bytes数据,没有数据进来时,阻塞
close() #关闭当前socket

2、client模块常用方法

socket() #建立socket对象
connect() #与确定的IP,端口号获得连接
send() \ sendall() #发送bytes类型数据
recv(1024) #接受bytes数据,没有数据进来时,阻塞
close() #关闭当前socket

三、示例:

server端代码

 1 import socket,subprocess
 2 
 3 sk = socket.socket()
 4 address = (127.0.0.1,8008)
 5 sk.bind(address)
 6 sk.listen(3)
 7 print(waiting>>>>>>>>)
 8 
 9 while True:
10     conn,addr = sk.accept()
11     print(addr,连接成功!)
12     while True:
13         try:
14             data = conn.recv(1024)
15         except Exception:
16             break
17         if not data:break
18         print(str(data,utf8),>>>:)
19         obj = subprocess.Popen(str(data,utf8),shell=True,stdout=subprocess.PIPE)
20         cmd_rst = obj.stdout.read()
21         # print(‘cmd_rst type>>>‘,type(cmd_rst),‘>>>‘,cmd_rst)
22         result_len = str(len(cmd_rst))
23         # print(‘result_len:‘,result_len)
24         conn.sendall(bytes(result_len,utf8))
25         print(str(conn.recv(1024),utf8))
26         conn.sendall(cmd_rst)

client端代码

 1 import socket,subprocess
 2 
 3 sk = socket.socket()
 4 address = (127.0.0.1,8008)
 5 sk.connect(address)
 6 while True:
 7     inp = input(>>>请输入指令:)
 8     if inp == exit:break
 9     sk.send(bytes(inp,utf8))
10     res_len = int(str(sk.recv(1024),utf8))
11     sk.send(bytes(okokok,utf8))
12     data = bytes()
13     while len(data) != res_len:
14         rcv = sk.recv(1024)
15         data += rcv
16     print(str(data,gbk))
17 sk.close()

执行效果

 1 E:\Python36-32\python.exe E:/PycharmProjects/untitled/QICQ/Client.py
 2 >>>请输入指令:tasklist
 3 
 4 映像名称                       PID 会话名              会话#       内存使用 
 5 ========================= ======== ================ =========== ============
 6 System Idle Process              0 Services                   0         24 K
 7 System                           4 Services                   0        796 K
 8 smss.exe                       344 Services                   0        316 K
 9 csrss.exe                      476 Services                   0      1,544 K
10 wininit.exe                    568 Services                   0        532 K
11 csrss.exe                      580 Console                    1      7,240 K
12 winlogon.exe                   620 Console                    1        648 K
13 services.exe                   672 Services                   0      3,288 K
14 lsass.exe                      688 Services                   0      4,444 K
15 lsm.exe                        696 Services                   0      1,232 K
16 svchost.exe                    804 Services                   0      3,196 K
17 nvvsvc.exe                     872 Services                   0      2,200 K
18 svchost.exe                    912 Services                   0      2,804 K
19 svchost.exe                   1008 Services                   0      7,156 K
20 svchost.exe                   1040 Services                   0     47,744 K
21 svchost.exe                   1072 Services                   0     13,296 K
22 svchost.exe                   1200 Services                   0      6,000 K
23 Pinyin_2345Svc.exe            1272 Services                   0      6,292 K
24 Protect_2345Explorer.exe      1388 Services                   0      3,080 K
25 nvxdsync.exe                  1416 Console                    1      3,200 K
26 nvvsvc.exe                    1428 Console                    1      1,132 K
27 ZhuDongFangYu.exe             1480 Services                   0      5,600 K
28 svchost.exe                   1504 Services                   0      8,732 K
29 dwm.exe                       1660 Console                    1     18,628 K
30 explorer.exe                  1668 Console                    1     51,332 K
31 spoolsv.exe                   1852 Services                   0      2,188 K
32 svchost.exe                   1952 Services                   0      3,252 K
33 taskhost.exe                  1976 Console                    1      4,848 K
34 service.exe                    504 Services                   0        532 K
35 360sd.exe                     2436 Console                    1      2,028 K
36 SearchIndexer.exe             2608 Services                   0     29,708 K
37 2345PinyinCloud.exe           3160 Console                    1     72,176 K
38 360bdoctor.exe                3244 Console                    1      1,856 K
39 360rp.exe                     3656 Console                    1     30,652 K
40 sesvc.exe                     1136 Console                    1      3,748 K
41 Chrome.exe                    3940 Console                    1     90,868 K
42 Chrome.exe                    1796 Console                    1      1,244 K
43 Chrome.exe                    1704 Console                    1        816 K
44 Chrome.exe                    3464 Console                    1     21,200 K
45 Chrome.exe                    3504 Console                    1    150,884 K
46 mscorsvw.exe                  1820 Services                   0      1,800 K
47 svchost.exe                   3312 Services                   0      2,104 K
48 Thunder.exe                   4916 Console                    1     15,800 K
49 Thunder.exe                   5156 Console                    1     17,056 K
50 Thunder.exe                   5332 Console                    1      8,416 K
51 DownloadSDKServer.exe         5356 Console                    1     13,456 K
52 conhost.exe                   5392 Console                    1      2,252 K
53 Thunder.exe                   6036 Console                    1      4,532 K
54 Thunder.exe                   6044 Console                    1        744 K
55 Thunder.exe                   6052 Console                    1        744 K
56 Thunder.exe                   1212 Console                    1      3,248 K
57 xlbrowsershell.exe             924 Console                    1      2,460 K
58 svchost.exe                   2024 Services                   0      5,264 K
59 xlbrowsershell.exe             848 Console                    1        880 K
60 xlbrowsershell.exe            4288 Console                    1      1,456 K
61 pycharm.exe                   2772 Console                    1    563,684 K
62 fsnotifier.exe                4032 Console                    1      3,284 K
63 conhost.exe                   2692 Console                    1      2,464 K
64 360sdupd.exe                  5800 Console                    1     10,620 K
65 WmiPrvSE.exe                  1528 Services                   0      6,028 K
66 SearchProtocolHost.exe        4608 Services                   0      6,828 K
67 SearchFilterHost.exe          4768 Services                   0      4,680 K
68 python.exe                    6140 Console                    1      8,624 K
69 conhost.exe                   2364 Console                    1      2,980 K
70 python.exe                     472 Console                    1      8,540 K
71 conhost.exe                   2752 Console                    1      2,972 K
72 cmd.exe                       1056 Console                    1      2,548 K
73 tasklist.exe                  4512 Console                    1      4,764 K

备注:

连续的两次send(),可能出现占包现象,解决办法是在中间加一条recv(),进行一次阻塞

 

socket小练习:通过server端,执行cmd命令

标签:内存   end   add   返回   byte   sock   upd   result   connect   

原文地址:https://www.cnblogs.com/fly10086/p/12345033.html

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