Python 之自動獲取公網IP
阿新 • • 發佈：2017-09-30
ras number success sel sql ror copy cnblogs 由於
Python 之自動獲取公網IP
2017年9月30日
0.預備知識
0.1 SQL基礎
ubuntu、Debian系列安裝:
1 [email protected]:~/python-script# apt-get install mysql-server
Redhat、Centos 系列安裝：
1 [[email protected] ~]# yum install mysql-server
登錄數據庫
1 [email protected]:~ $ mysql -uroot -p -hlocalhost 2 Enter password: 3Welcome to the MariaDB monitor. Commands end with ; or \g. 4 Your MariaDB connection id is 36 5 Server version: 10.0.30-MariaDB-0+deb8u2 (Raspbian) 6 7 Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. 8 9 Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.10 11 MariaDB [(none)]>
其中,mysql是客戶端命令 -u是指定用戶 -p是密碼 -h是主機
創建數據庫、創建數據表
創建數據庫語法如下
1 MariaDB [(none)]> help create database 2 Name: ‘CREATE DATABASE‘ 3 Description: 4 Syntax: 5 CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name 6 [create_specification] ... 7 8 create_specification:9 [DEFAULT] CHARACTER SET [=] charset_name 10 | [DEFAULT] COLLATE [=] collation_name 11 12 CREATE DATABASE creates a database with the given name. To use this 13 statement, you need the CREATE privilege for the database. CREATE 14 SCHEMA is a synonym for CREATE DATABASE. 15 16 URL: https://mariadb.com/kb/en/create-database/ 17 18 19 MariaDB [(none)]>
創建數據表語法如下
1 MariaDB [(none)]> help create table 2 Name: ‘CREATE TABLE‘ 3 Description: 4 Syntax: 5 CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name 6 (create_definition,...) 7 [table_options] 8 [partition_options] 9 10 Or: 11 12 CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name 13 [(create_definition,...)] 14 [table_options] 15 [partition_options] 16 select_statement
創建數據庫ServiceLogs
1 MariaDB [(none)]> CREATE DATABASE `ServiceLogs`
創建數據表
1 MariaDB [(none)]> CREATE TABLE `python_ip_logs` ( 2 `serial_number` bigint(20) NOT NULL AUTO_INCREMENT, 3 `time` datetime DEFAULT NULL, 4 `old_data` varchar(50) DEFAULT NULL, 5 `new_data` varchar(50) DEFAULT NULL, 6 PRIMARY KEY (`serial_number`) 7 ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1
表內容的查詢
1 MariaDB [ServiceLogs]> select * from python_ip_logs; 2 Empty set (0.00 sec)
0.2 python連接操作MySQL
模塊下載安裝
下載路徑: https://pypi.python.org/pypi/MySQL-python
安裝:
1 安裝: 2 解壓 3 unzip MySQL-python-1.2.5.zip 4 進入解壓後目錄 5 cd MySQL-python-1.2.5/ 6 安裝依賴 7 apt-get install libmysqlclient-dev 8 安裝 9 python setup.py install 10 如果為0則安裝OK 11 echo $?
連接Mysql
1 [email protected]:~/python-script# cat p_mysql_3.py 2 #!/usr/bin/env python 3 4 import MySQLdb 5 6 try : 7 conn = MySQLdb.connect("主機","用戶名","密碼","ServiceLogs") 8 print ("Connect Mysql successful") 9 except: 10 print ("Connect MySQL Fail") 11 [email protected]:~/python-script#
如果輸出Connect Mysql successful則說明連接OK
Python MySQL insert語句
1 [email protected]:~/python-script# cat p_mysql1.py 2 #!/usr/bin/env python 3 4 import MySQLdb 5 6 db = MySQLdb.connect("localhost","root","root","ServiceLogs") 7 8 cursor = db.cursor() 9 10 sql = "insert INTO python_ip_logs VALUES (DEFAULT,‘2017-09-29 22:46:00‘,‘123‘,‘456‘)" 11 12 cursor.execute(sql) 13 db.commit() 14 15 db.close() 16 [email protected]:~/python-script#
執行完成後可以mysql客戶端SELECT語句查看結果
1.需求
1.1 需求
由於寬帶每次重啟都會重新獲得一個新的IP，那麽在這種狀態下，在進行ssh連接的時候會出現諸多的不便，好在之前還有花生殼軟件，它能夠通過域名來找到你的IP地址，進行訪問，這樣是最好的，不過最近花生殼也要進行實名認證才能夠使用，於是乎，這就催發了我寫一個python腳本來獲取公網IP的沖動。
實現效果:當IP變更時，能夠通過郵件進行通知，且在數據庫中寫入數據
1.2 大致思路
1.3 流程圖
其他代碼均沒有什麽好畫的
2.代碼編寫
2.1.1 編寫python代碼
getnetworkip.py
1 [email protected]:~/python-script# cat getnetworkip.py 2 #!/usr/bin/env python 3 # coding:UTF-8 4 5 import requests 6 import send_mail 7 import savedb 8 9 def get_out_ip() : 10 url = r‘http://www.trackip.net/‘ 11 r = requests.get(url) 12 txt = r.text 13 ip = txt[txt.find(‘title‘)+6:txt.find(‘/title‘)-1] 14 return (ip) 15 16 def main() : 17 try: 18 savedb.general_files() 19 20 tip = get_out_ip() 21 cip = savedb.read_files() 22 23 24 if savedb.write_files(cip,tip) : 25 send_mail.SamMail(get_out_ip()) 26 except : 27 return False 28 29 if __name__=="__main__" : 30 main() 31 [email protected]:~/python-script#
savedb.py
1 [email protected]:~/python-script# cat savedb.py 2 #!/usr/bin/env python 3 4 import MySQLdb 5 import os 6 import time 7 8 dirname = "logs" 9 filename = "logs/.ip_tmp" 10 11 def general_files(Default_String="Null") : 12 13 var1 = Default_String 14 15 if not os.path.exists(dirname) : 16 os.makedirs(dirname) 17 18 if not os.path.exists(filename) : 19 f = open(filename,‘w‘) 20 f.write(var1) 21 f.close() 22 23 def read_files() : 24 f = open(filename,‘r‘) 25 txt = f.readline() 26 return (txt) 27 28 def write_files(txt,new_ip) : 29 if not txt == new_ip : 30 NowTime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) 31 old_ip = read_files() 32 os.remove(filename) 33 general_files(new_ip) 34 write_db(NowTime,old_ip,new_ip) 35 return True 36 else: 37 return False 38 39 40 def write_db(NowTime,Old_ip,New_ip) : 41 db = MySQLdb.connect("主機","用戶名","密碼","庫名") 42 43 cursor = db.cursor() 44 45 sql = """ 46 INSERT INTO python_ip_logs 47 VALUES 48 (DEFAULT,"%s","%s","%s") 49 """ %(NowTime,Old_ip,New_ip) 50 51 try: 52 cursor.execute(sql) 53 db.commit() 54 except: 55 db.rollback() 56 57 db.close() 58 [email protected]:~/python-script#
send_mail.py
1 [email protected]:~/python-script# cat send_mail.py 2 #!/usr/bin/env python 3 4 import smtplib 5 import email.mime.text 6 7 def SamMail(HtmlString) : 8 HOST = "smtp.163.com" 9 SUBJECT = "主題" 10 TO = "對方的郵箱地址" 11 FROM = "來自於哪裏" 12 Remask = "The IP address has been changed" 13 14 msg = email.mime.text.MIMEText(""" 15 <html> 16 <head> 17 <meta charset="utf-8" /> 18 </head> 19 <body> 20 <em><h1>ip:%s</h1></em> 21 </body> 22 </html> 23 """ %(HtmlString),"html","utf-8") 24 25 msg[‘Subject‘] = SUBJECT 26 msg[‘From‘] = FROM 27 msg[‘TO‘] = TO 28 29 try: 30 server = smtplib.SMTP() 31 server.connect(HOST,‘25‘) 32 server.starttls() 33 server.login("用戶名","密碼") 34 server.sendmail(FROM,TO,msg.as_string()) 35 server.quit() 36 except: 37 print ("Send mail Error") 38 [email protected]:~/python-script# 39 print ("%s" %(line),end=‘‘)
3.效果
收到的郵件如下:
利用SELECT查看表,效果如下:
把腳本放入crontab中，讓它執行定時任務即可
Python 之自動獲取公網IP