Synnefo » snf-image-creator

        self.meta["USERS"] = " ".join(self._get_passworded_users())

        # Delete the USERS metadata if empty

        if not len(self.meta['USERS']):

            self.out.warn("No passworded users found!")

            del self.meta['USERS']

    def _get_passworded_users(self):

        users = []

        regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')

        for line in self.g.cat('/etc/shadow').splitlines():

            match = regexp.match(line)

            if not match:

                continue

            user, passwd = match.groups()

            if len(passwd) > 0 and passwd[0] == '!':

                self.out.warn("Ignoring locked %s account." % user)

            else:

                users.append(user)

        return users

    @sysprep(enabled=False)

    def remove_user_accounts(self, print_header=True):

        """Remove all user accounts with id greater than 1000"""

        if print_header:

            self.out.output("Removing all user accounts with id greater than "

                            "1000")

        if 'USERS' not in self.meta:

            return

        # Remove users from /etc/passwd

        passwd = []

        removed_users = {}

        metadata_users = self.meta['USERS'].split()

        for line in self.g.cat('/etc/passwd').splitlines():

            fields = line.split(':')

            if int(fields[2]) > 1000:

                removed_users[fields[0]] = fields

                # remove it from the USERS metadata too

                if fields[0] in metadata_users:

                    metadata_users.remove(fields[0])

            else:

                passwd.append(':'.join(fields))

        self.meta['USERS'] = " ".join(metadata_users)

        # Delete the USERS metadata if empty

        if not len(self.meta['USERS']):

            del self.meta['USERS']

        self.g.write('/etc/passwd', '\n'.join(passwd) + '\n')

        # Remove the corresponding /etc/shadow entries

        shadow = []

        for line in self.g.cat('/etc/shadow').splitlines():

            fields = line.split(':')

            if fields[0] not in removed_users:

                shadow.append(':'.join(fields))

        self.g.write('/etc/shadow', "\n".join(shadow) + '\n')

        # Remove the corresponding /etc/group entries

        group = []

        for line in self.g.cat('/etc/group').splitlines():

            fields = line.split(':')

            # Remove groups tha have the same name as the removed users

            if fields[0] not in removed_users:

                group.append(':'.join(fields))

        self.g.write('/etc/group', '\n'.join(group) + '\n')

        # Remove home directories

        for home in [field[5] for field in removed_users.values()]:

            if self.g.is_dir(home) and home.startswith('/home/'):

                self.g.rm_rf(home)

    @sysprep()

    def cleanup_passwords(self, print_header=True):

        """Remove all passwords and lock all user accounts"""

        if print_header:

            self.out.output("Cleaning up passwords & locking all user "

                            "accounts")

        shadow = []

        for line in self.g.cat('/etc/shadow').splitlines():

            fields = line.split(':')

            if fields[1] not in ('*', '!'):

                fields[1] = '!'

            shadow.append(":".join(fields))

        self.g.write('/etc/shadow', "\n".join(shadow) + '\n')

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