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())
55 def _get_passworded_users(self):
57 regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
59 for line in self.g.cat('/etc/shadow').splitlines():
60 match = regexp.match(line)
64 user, passwd = match.groups()
65 if len(passwd) > 0 and passwd[0] == '!':
66 warn("Ignoring locked %s account." % user)
72 @sysprep(enabled=False)
73 def remove_user_accounts(self, print_header=True):
74 """Remove all user accounts with id greater than 1000"""
78 'Removing all user accounts with id greater than 1000')
80 # Remove users from /etc/passwd
83 metadata_users = self.meta['USERS'].split()
84 for line in self.g.cat('/etc/passwd').splitlines():
85 fields = line.split(':')
86 if int(fields[2]) > 1000:
87 removed_users[fields[0]] = fields
88 # remove it from the USERS metadata too
89 if fields[0] in metadata_users:
90 metadata_users.remove(fields[0])
92 passwd.append(':'.join(fields))
94 self.meta['USERS'] = " ".join(metadata_users)
95 self.g.write('/etc/passwd', '\n'.join(passwd) + '\n')
97 # Remove the corresponding /etc/shadow entries
99 for line in self.g.cat('/etc/shadow').splitlines():
100 fields = line.split(':')
101 if fields[0] not in removed_users:
102 shadow.append(':'.join(fields))
104 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
106 # Remove the corresponding /etc/group entries
108 for line in self.g.cat('/etc/group').splitlines():
109 fields = line.split(':')
110 # Remove groups tha have the same name as the removed users
111 if fields[0] not in removed_users:
112 group.append(':'.join(fields))
114 self.g.write('/etc/group', '\n'.join(group) + '\n')
116 # Remove home directories
117 for home in [field[5] for field in removed_users.values()]:
118 if self.g.is_dir(home) and home.startswith('/home/'):
122 def cleanup_passwords(self, print_header=True):
123 """Remove all passwords and lock all user accounts"""
127 'Cleaning up passwords & locking all user accounts')
131 for line in self.g.cat('/etc/shadow').splitlines():
132 fields = line.split(':')
133 if fields[1] not in ('*', '!'):
136 shadow.append(":".join(fields))
138 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
141 def cleanup_cache(self, print_header=True):
142 """Remove all regular files under /var/cache"""
145 self.out.output('Removing files under /var/cache')
147 self.foreach_file('/var/cache', self.g.rm, ftype='r')
150 def cleanup_tmp(self, print_header=True):
151 """Remove all files under /tmp and /var/tmp"""
154 self.out.output('Removing files under /tmp and /var/tmp')
156 self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1)
157 self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1)
160 def cleanup_log(self, print_header=True):
161 """Empty all files under /var/log"""
164 self.out.output('Emptying all files under /var/log')
166 self.foreach_file('/var/log', self.g.truncate, ftype='r')
168 @sysprep(enabled=False)
169 def cleanup_mail(self, print_header=True):
170 """Remove all files under /var/mail and /var/spool/mail"""
173 self.out.output('Removing files under /var/mail & /var/spool/mail')
175 self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1)
176 self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1)
179 def cleanup_userdata(self, print_header=True):
180 """Delete sensitive userdata"""
182 homedirs = ['/root'] + self.ls('/home/')
185 self.out.output('Removing sensitive user data under %s' % " ".
188 for homedir in homedirs:
189 for data in self.sensitive_userdata:
190 fname = "%s/%s" % (homedir, data)
191 if self.g.is_file(fname):
192 self.g.scrub_file(fname)
194 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :