1 # Copyright 2012 GRNET S.A. All rights reserved.
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4 # without modification, are permitted provided that the following
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37 from image_creator.os_type import OSBase, sysprep
42 sensitive_userdata = [
50 def __init__(self, rootdev, ghandler, output):
51 super(Unix, self).__init__(rootdev, ghandler, output)
53 self.meta["USERS"] = " ".join(self._get_passworded_users())
54 # Delete the USERS metadata if empty
55 if not len(self.meta['USERS']):
56 self.out.warn("No passworded users found!")
57 del self.meta['USERS']
59 def _get_passworded_users(self):
61 regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
63 for line in self.g.cat('/etc/shadow').splitlines():
64 match = regexp.match(line)
68 user, passwd = match.groups()
69 if len(passwd) > 0 and passwd[0] == '!':
70 self.out.warn("Ignoring locked %s account." % user)
76 @sysprep(enabled=False)
77 def remove_user_accounts(self, print_header=True):
78 """Remove all user accounts with id greater than 1000"""
81 self.out.output("Removing all user accounts with id greater than "
84 if 'USERS' not in self.meta:
87 # Remove users from /etc/passwd
90 metadata_users = self.meta['USERS'].split()
91 for line in self.g.cat('/etc/passwd').splitlines():
92 fields = line.split(':')
93 if int(fields[2]) > 1000:
94 removed_users[fields[0]] = fields
95 # remove it from the USERS metadata too
96 if fields[0] in metadata_users:
97 metadata_users.remove(fields[0])
99 passwd.append(':'.join(fields))
101 self.meta['USERS'] = " ".join(metadata_users)
103 # Delete the USERS metadata if empty
104 if not len(self.meta['USERS']):
105 del self.meta['USERS']
107 self.g.write('/etc/passwd', '\n'.join(passwd) + '\n')
109 # Remove the corresponding /etc/shadow entries
111 for line in self.g.cat('/etc/shadow').splitlines():
112 fields = line.split(':')
113 if fields[0] not in removed_users:
114 shadow.append(':'.join(fields))
116 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
118 # Remove the corresponding /etc/group entries
120 for line in self.g.cat('/etc/group').splitlines():
121 fields = line.split(':')
122 # Remove groups tha have the same name as the removed users
123 if fields[0] not in removed_users:
124 group.append(':'.join(fields))
126 self.g.write('/etc/group', '\n'.join(group) + '\n')
128 # Remove home directories
129 for home in [field[5] for field in removed_users.values()]:
130 if self.g.is_dir(home) and home.startswith('/home/'):
134 def cleanup_passwords(self, print_header=True):
135 """Remove all passwords and lock all user accounts"""
138 self.out.output("Cleaning up passwords & locking all user "
143 for line in self.g.cat('/etc/shadow').splitlines():
144 fields = line.split(':')
145 if fields[1] not in ('*', '!'):
148 shadow.append(":".join(fields))
150 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
153 def cleanup_cache(self, print_header=True):
154 """Remove all regular files under /var/cache"""
157 self.out.output('Removing files under /var/cache')
159 self.foreach_file('/var/cache', self.g.rm, ftype='r')
162 def cleanup_tmp(self, print_header=True):
163 """Remove all files under /tmp and /var/tmp"""
166 self.out.output('Removing files under /tmp and /var/tmp')
168 self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1)
169 self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1)
172 def cleanup_log(self, print_header=True):
173 """Empty all files under /var/log"""
176 self.out.output('Emptying all files under /var/log')
178 self.foreach_file('/var/log', self.g.truncate, ftype='r')
180 @sysprep(enabled=False)
181 def cleanup_mail(self, print_header=True):
182 """Remove all files under /var/mail and /var/spool/mail"""
185 self.out.output('Removing files under /var/mail & /var/spool/mail')
187 self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1)
188 self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1)
191 def cleanup_userdata(self, print_header=True):
192 """Delete sensitive userdata"""
194 homedirs = ['/root'] + self.ls('/home/')
197 self.out.output("Removing sensitive user data under %s" %
200 for homedir in homedirs:
201 for data in self.sensitive_userdata:
202 fname = "%s/%s" % (homedir, data)
203 if self.g.is_file(fname):
204 self.g.scrub_file(fname)
205 elif self.g.is_dir(fname):
206 self.foreach_file(fname, self.g.scrub_file, ftype='r')
208 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :