The tool for user and password generation.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/parkinglot@495 e5f2f494-b856-4b98-b285-d166d9295462

tools/usr_mgr/README

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+Create user and its password by run the following command:
+
+python usr_mgr.py
+
+The user and its password is saved in file 'passwd.csv'.

tools/usr_mgr/usr_mgr.py

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+'''
+This file implements user management program. The user name and 
+its password is saved in csv file.
+'''
+
+import random
+from hashlib import sha1
+
+import csv
+
+class PasswordHash(object):
+    def __init__(self, password_):
+        self.salt = "".join(chr(random.randint(33, 127)) for x in range(64))
+        self.saltedpw = sha1((password_ + self.salt).encode()).hexdigest()
+
+    def check_password(self, password_):
+        """checks if the password is correct"""
+        return self.saltedpw == sha1((password_ + self.salt).encode()).hexdigest()
+
+# Note: a secure application would never store passwords in plaintext in the source code
+def check_username(name):
+    csvfile = open('passwd.csv')
+    ret = 0
+    reader = csv.reader(csvfile, delimiter = "\t", quoting = csv.QUOTE_MINIMAL)
+    for row in reader:
+        if name == row[0]:
+            ret = 1
+            break
+    
+    csvfile.close()
+    return ret
+
+def save_info(name,pw,salt):
+    csvfile = open('passwd.csv', 'a')
+    writer = csv.writer(csvfile, delimiter = "\t", quoting = csv.QUOTE_MINIMAL)
+    writer.writerow([name, pw, salt])
+    csvfile.close()
+
+def register():
+    flag = True
+    # create the file if it doesn't exist
+    csvfile = open('passwd.csv', "w")
+    csvfile.close()
+    while flag :
+        username = input("username:")
+        passwd = input("passwd:")
+        if check_username(username):
+             print("the usename already exist!")
+        else :
+            pwhash = PasswordHash(passwd)
+            save_info(username,pwhash.saltedpw, pwhash.salt)
+            print("register success!")
+            flag = False       
+
+register()
+