root / image_creator / os_type / unix.py @ 61d14323
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1 | ae48a082 | Nikos Skalkotos | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | ae48a082 | Nikos Skalkotos | #
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3 | ae48a082 | Nikos Skalkotos | # Redistribution and use in source and binary forms, with or
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4 | ae48a082 | Nikos Skalkotos | # without modification, are permitted provided that the following
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5 | ae48a082 | Nikos Skalkotos | # conditions are met:
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6 | ae48a082 | Nikos Skalkotos | #
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7 | ae48a082 | Nikos Skalkotos | # 1. Redistributions of source code must retain the above
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8 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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9 | ae48a082 | Nikos Skalkotos | # disclaimer.
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10 | ae48a082 | Nikos Skalkotos | #
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11 | ae48a082 | Nikos Skalkotos | # 2. Redistributions in binary form must reproduce the above
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12 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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13 | ae48a082 | Nikos Skalkotos | # disclaimer in the documentation and/or other materials
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14 | ae48a082 | Nikos Skalkotos | # provided with the distribution.
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15 | ae48a082 | Nikos Skalkotos | #
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16 | ae48a082 | Nikos Skalkotos | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | ae48a082 | Nikos Skalkotos | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | ae48a082 | Nikos Skalkotos | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | ae48a082 | Nikos Skalkotos | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | ae48a082 | Nikos Skalkotos | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | ae48a082 | Nikos Skalkotos | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | ae48a082 | Nikos Skalkotos | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | ae48a082 | Nikos Skalkotos | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | ae48a082 | Nikos Skalkotos | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | ae48a082 | Nikos Skalkotos | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | ae48a082 | Nikos Skalkotos | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | ae48a082 | Nikos Skalkotos | # POSSIBILITY OF SUCH DAMAGE.
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28 | ae48a082 | Nikos Skalkotos | #
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29 | ae48a082 | Nikos Skalkotos | # The views and conclusions contained in the software and
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30 | ae48a082 | Nikos Skalkotos | # documentation are those of the authors and should not be
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31 | ae48a082 | Nikos Skalkotos | # interpreted as representing official policies, either expressed
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32 | ae48a082 | Nikos Skalkotos | # or implied, of GRNET S.A.
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33 | aa2062ba | Nikos Skalkotos | |
34 | aa2062ba | Nikos Skalkotos | import re |
35 | aa2062ba | Nikos Skalkotos | |
36 | f165adc0 | Nikos Skalkotos | from image_creator.os_type import OSBase, sysprep |
37 | aa2062ba | Nikos Skalkotos | |
38 | 8c574358 | Nikos Skalkotos | |
39 | aa2062ba | Nikos Skalkotos | class Unix(OSBase): |
40 | 0d5a999d | Nikos Skalkotos | |
41 | f8119e65 | Nikos Skalkotos | sensitive_userdata = [ |
42 | f8119e65 | Nikos Skalkotos | '.bash_history',
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43 | f8119e65 | Nikos Skalkotos | '.gnupg',
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44 | e36b5b14 | Nikos Skalkotos | '.ssh',
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45 | e36b5b14 | Nikos Skalkotos | '.kamakirc',
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46 | e36b5b14 | Nikos Skalkotos | '.kamaki.history'
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47 | f8119e65 | Nikos Skalkotos | ] |
48 | 0d5a999d | Nikos Skalkotos | |
49 | e77e66a9 | Nikos Skalkotos | def __init__(self, rootdev, ghandler, output): |
50 | e77e66a9 | Nikos Skalkotos | super(Unix, self).__init__(rootdev, ghandler, output) |
51 | aa2062ba | Nikos Skalkotos | |
52 | 5886f568 | Nikos Skalkotos | self.meta["USERS"] = " ".join(self._get_passworded_users()) |
53 | 5f7e1e0c | Nikos Skalkotos | # Delete the USERS metadata if empty
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54 | 5f7e1e0c | Nikos Skalkotos | if not len(self.meta['USERS']): |
55 | 5f7e1e0c | Nikos Skalkotos | self.out.warn("No passworded users found!") |
56 | 5f7e1e0c | Nikos Skalkotos | del self.meta['USERS'] |
57 | 5f7e1e0c | Nikos Skalkotos | |
58 | 5886f568 | Nikos Skalkotos | def _get_passworded_users(self): |
59 | aa2062ba | Nikos Skalkotos | users = [] |
60 | aa2062ba | Nikos Skalkotos | regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
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61 | aa2062ba | Nikos Skalkotos | |
62 | 36e348b6 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
63 | aa2062ba | Nikos Skalkotos | match = regexp.match(line) |
64 | aa2062ba | Nikos Skalkotos | if not match: |
65 | aa2062ba | Nikos Skalkotos | continue
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66 | aa2062ba | Nikos Skalkotos | |
67 | aa2062ba | Nikos Skalkotos | user, passwd = match.groups() |
68 | aa2062ba | Nikos Skalkotos | if len(passwd) > 0 and passwd[0] == '!': |
69 | 564a18ce | Nikos Skalkotos | self.out.warn("Ignoring locked %s account." % user) |
70 | aa2062ba | Nikos Skalkotos | else:
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71 | aa2062ba | Nikos Skalkotos | users.append(user) |
72 | aa2062ba | Nikos Skalkotos | |
73 | aa2062ba | Nikos Skalkotos | return users
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74 | aa2062ba | Nikos Skalkotos | |
75 | f165adc0 | Nikos Skalkotos | @sysprep(enabled=False) |
76 | f165adc0 | Nikos Skalkotos | def remove_user_accounts(self, print_header=True): |
77 | 50273553 | Nikos Skalkotos | """Remove all user accounts with id greater than 1000"""
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78 | a9c9d939 | Nikos Skalkotos | |
79 | a9c9d939 | Nikos Skalkotos | if print_header:
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80 | f99fe99d | Nikos Skalkotos | self.out.output("Removing all user accounts with id greater than " |
81 | f99fe99d | Nikos Skalkotos | "1000")
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82 | a9c9d939 | Nikos Skalkotos | |
83 | 5f7e1e0c | Nikos Skalkotos | if 'USERS' not in self.meta: |
84 | 5f7e1e0c | Nikos Skalkotos | return
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85 | 5f7e1e0c | Nikos Skalkotos | |
86 | a9c9d939 | Nikos Skalkotos | # Remove users from /etc/passwd
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87 | a9c9d939 | Nikos Skalkotos | passwd = [] |
88 | a9c9d939 | Nikos Skalkotos | removed_users = {} |
89 | 5886f568 | Nikos Skalkotos | metadata_users = self.meta['USERS'].split() |
90 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/passwd').splitlines(): |
91 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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92 | a9c9d939 | Nikos Skalkotos | if int(fields[2]) > 1000: |
93 | a9c9d939 | Nikos Skalkotos | removed_users[fields[0]] = fields
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94 | 5886f568 | Nikos Skalkotos | # remove it from the USERS metadata too
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95 | 5886f568 | Nikos Skalkotos | if fields[0] in metadata_users: |
96 | 5886f568 | Nikos Skalkotos | metadata_users.remove(fields[0])
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97 | a9c9d939 | Nikos Skalkotos | else:
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98 | a9c9d939 | Nikos Skalkotos | passwd.append(':'.join(fields))
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99 | a9c9d939 | Nikos Skalkotos | |
100 | 5886f568 | Nikos Skalkotos | self.meta['USERS'] = " ".join(metadata_users) |
101 | 5f7e1e0c | Nikos Skalkotos | |
102 | 5f7e1e0c | Nikos Skalkotos | # Delete the USERS metadata if empty
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103 | 5f7e1e0c | Nikos Skalkotos | if not len(self.meta['USERS']): |
104 | 5f7e1e0c | Nikos Skalkotos | del self.meta['USERS'] |
105 | 5f7e1e0c | Nikos Skalkotos | |
106 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/passwd', '\n'.join(passwd) + '\n') |
107 | a9c9d939 | Nikos Skalkotos | |
108 | a9c9d939 | Nikos Skalkotos | # Remove the corresponding /etc/shadow entries
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109 | a9c9d939 | Nikos Skalkotos | shadow = [] |
110 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
111 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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112 | a9c9d939 | Nikos Skalkotos | if fields[0] not in removed_users: |
113 | a9c9d939 | Nikos Skalkotos | shadow.append(':'.join(fields))
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114 | a9c9d939 | Nikos Skalkotos | |
115 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/shadow', "\n".join(shadow) + '\n') |
116 | a9c9d939 | Nikos Skalkotos | |
117 | a9c9d939 | Nikos Skalkotos | # Remove the corresponding /etc/group entries
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118 | a9c9d939 | Nikos Skalkotos | group = [] |
119 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/group').splitlines(): |
120 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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121 | a9c9d939 | Nikos Skalkotos | # Remove groups tha have the same name as the removed users
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122 | a9c9d939 | Nikos Skalkotos | if fields[0] not in removed_users: |
123 | a9c9d939 | Nikos Skalkotos | group.append(':'.join(fields))
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124 | a9c9d939 | Nikos Skalkotos | |
125 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/group', '\n'.join(group) + '\n') |
126 | 4cab6d62 | Nikos Skalkotos | |
127 | a9c9d939 | Nikos Skalkotos | # Remove home directories
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128 | a9c9d939 | Nikos Skalkotos | for home in [field[5] for field in removed_users.values()]: |
129 | a9c9d939 | Nikos Skalkotos | if self.g.is_dir(home) and home.startswith('/home/'): |
130 | a9c9d939 | Nikos Skalkotos | self.g.rm_rf(home)
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131 | a9c9d939 | Nikos Skalkotos | |
132 | f165adc0 | Nikos Skalkotos | @sysprep()
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133 | f165adc0 | Nikos Skalkotos | def cleanup_passwords(self, print_header=True): |
134 | 51fab9c9 | Nikos Skalkotos | """Remove all passwords and lock all user accounts"""
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135 | 51fab9c9 | Nikos Skalkotos | |
136 | 51fab9c9 | Nikos Skalkotos | if print_header:
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137 | f99fe99d | Nikos Skalkotos | self.out.output("Cleaning up passwords & locking all user " |
138 | f99fe99d | Nikos Skalkotos | "accounts")
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139 | 51fab9c9 | Nikos Skalkotos | |
140 | 51fab9c9 | Nikos Skalkotos | shadow = [] |
141 | 51fab9c9 | Nikos Skalkotos | |
142 | 51fab9c9 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
143 | 51fab9c9 | Nikos Skalkotos | fields = line.split(':')
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144 | 51fab9c9 | Nikos Skalkotos | if fields[1] not in ('*', '!'): |
145 | 51fab9c9 | Nikos Skalkotos | fields[1] = '!' |
146 | 51fab9c9 | Nikos Skalkotos | |
147 | 51fab9c9 | Nikos Skalkotos | shadow.append(":".join(fields))
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148 | 51fab9c9 | Nikos Skalkotos | |
149 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/shadow', "\n".join(shadow) + '\n') |
150 | 51fab9c9 | Nikos Skalkotos | |
151 | f165adc0 | Nikos Skalkotos | @sysprep()
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152 | f165adc0 | Nikos Skalkotos | def cleanup_cache(self, print_header=True): |
153 | f8119e65 | Nikos Skalkotos | """Remove all regular files under /var/cache"""
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154 | 22a6d232 | Nikos Skalkotos | |
155 | 3f70f242 | Nikos Skalkotos | if print_header:
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156 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /var/cache') |
157 | 22a6d232 | Nikos Skalkotos | |
158 | c16922f7 | Nikos Skalkotos | self.foreach_file('/var/cache', self.g.rm, ftype='r') |
159 | 0d5a999d | Nikos Skalkotos | |
160 | f165adc0 | Nikos Skalkotos | @sysprep()
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161 | f165adc0 | Nikos Skalkotos | def cleanup_tmp(self, print_header=True): |
162 | f8119e65 | Nikos Skalkotos | """Remove all files under /tmp and /var/tmp"""
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163 | 22a6d232 | Nikos Skalkotos | |
164 | 3f70f242 | Nikos Skalkotos | if print_header:
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165 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /tmp and /var/tmp') |
166 | 22a6d232 | Nikos Skalkotos | |
167 | 8c574358 | Nikos Skalkotos | self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1) |
168 | 9297c398 | Nikos Skalkotos | self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1) |
169 | 0d5a999d | Nikos Skalkotos | |
170 | f165adc0 | Nikos Skalkotos | @sysprep()
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171 | f165adc0 | Nikos Skalkotos | def cleanup_log(self, print_header=True): |
172 | f8119e65 | Nikos Skalkotos | """Empty all files under /var/log"""
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173 | 22a6d232 | Nikos Skalkotos | |
174 | 3f70f242 | Nikos Skalkotos | if print_header:
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175 | e77e66a9 | Nikos Skalkotos | self.out.output('Emptying all files under /var/log') |
176 | 22a6d232 | Nikos Skalkotos | |
177 | 8c574358 | Nikos Skalkotos | self.foreach_file('/var/log', self.g.truncate, ftype='r') |
178 | 0d5a999d | Nikos Skalkotos | |
179 | f165adc0 | Nikos Skalkotos | @sysprep(enabled=False) |
180 | f165adc0 | Nikos Skalkotos | def cleanup_mail(self, print_header=True): |
181 | f8119e65 | Nikos Skalkotos | """Remove all files under /var/mail and /var/spool/mail"""
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182 | 22a6d232 | Nikos Skalkotos | |
183 | 3f70f242 | Nikos Skalkotos | if print_header:
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184 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /var/mail & /var/spool/mail') |
185 | 22a6d232 | Nikos Skalkotos | |
186 | f8119e65 | Nikos Skalkotos | self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1) |
187 | f8119e65 | Nikos Skalkotos | self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1) |
188 | 9297c398 | Nikos Skalkotos | |
189 | f165adc0 | Nikos Skalkotos | @sysprep()
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190 | f165adc0 | Nikos Skalkotos | def cleanup_userdata(self, print_header=True): |
191 | f8119e65 | Nikos Skalkotos | """Delete sensitive userdata"""
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192 | 22a6d232 | Nikos Skalkotos | |
193 | 0d5a999d | Nikos Skalkotos | homedirs = ['/root'] + self.ls('/home/') |
194 | 0d5a999d | Nikos Skalkotos | |
195 | 3f70f242 | Nikos Skalkotos | if print_header:
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196 | f99fe99d | Nikos Skalkotos | self.out.output("Removing sensitive user data under %s" % |
197 | f99fe99d | Nikos Skalkotos | " ".join(homedirs))
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198 | 3f70f242 | Nikos Skalkotos | |
199 | 0d5a999d | Nikos Skalkotos | for homedir in homedirs: |
200 | 0d5a999d | Nikos Skalkotos | for data in self.sensitive_userdata: |
201 | 0d5a999d | Nikos Skalkotos | fname = "%s/%s" % (homedir, data)
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202 | 0d5a999d | Nikos Skalkotos | if self.g.is_file(fname): |
203 | 0d5a999d | Nikos Skalkotos | self.g.scrub_file(fname)
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204 | e1e7b843 | Nikos Skalkotos | elif self.g.is_dir(fname): |
205 | e1e7b843 | Nikos Skalkotos | self.foreach_file(fname, self.g.scrub_file, ftype='r') |
206 | aa2062ba | Nikos Skalkotos | |
207 | aa2062ba | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |