Source

controlcenter / user_add / user_mod.py

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#!/usr/bin/env python

#    This file is part of controlcenter.
#
#    controlcenter is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License v2 as published by
#    the Free Software Foundation.
#
#    controlcenter is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with controlcenter.  If not, see <http://www.gnu.org/licenses/>.


__author__ = 'Moises Henriquez'
__author_email__ = 'moc.liamg]ta[xnl.E0M'.replace(']ta[', '@')[::-1]

import gtk
import os

__tabs__ = []
__unchanged_account_data = None

def _(str): return str

class LineLabel(gtk.Label):
    '''Pre-set widget based on gtk.Label pre-formatted to be used as a 
    label in instances where a label is needed before another widget'''
    def __init__(self, text):
        gtk.Label.__init__(self)
        self.set_property('use-markup', True)
        self.set_property('label', text)
        self.set_property('xalign', 0.0)
        self.set_property('width-chars', 13)    ## Fixme: Fixed width for these?
        


class SectionLabel(gtk.Label):
    '''Pre-set widget based on gtk.Label preformatted to be used as a
    section banner within tabs'''
    def __init__(self, text):
        gtk.Label.__init__(self)
        self.set_property('use-markup', True)
        self.set_property('label', '<b>%s</b>'% text)
        self.set_property('xalign', 0.0)
        self.set_property('xpad', 12)
        

class Tab(gtk.VBox):
    '''Abstract class for a tab in the user add module 
    Required Arguments:
        title:  Title to be used for this tab
                Title is available after creating the object
                via tab.label and is returned as a gtk.Label'''
    def __init__(self, title):
        gtk.VBox.__init__(self)
        self.label = gtk.Label(title)
        
    def refresh_info(self):
        ''' This method can be called to refresh the information displayed
        in this tab. Information is read from the account object'''
        pass
    
    def load_existing_data(self):
        '''This method will read the data for an existing user account
        and display it on the tabstrip. This will allow the same tabstrip to be
        used when creating a new account as well as when editing an existing account'''
        pass

class Account(object):
    '''Object for a user account. This object will have several properties
    available. These will be all set to None on a new account, or will
    default to the stored values on an existing account.
    '''
    def __init__(self, new = True):
        self.is_new = new
        self.name = None
        self.homedir = None
        self.uid = None
        self.shell = None
        self.pass1 = None
        self.pass2 = None
        self.password = None
        self.maingroup = None
        self.groups = []
        self.login = None
    
    def preview(self):
        '''Prints out the information stored about the user account. This 
        information will reflect any changes that have been made and is 
        for mere testing purposes, to make sure all required fields are 
        filled'''
        print _('Login Name:'), self.login
        print _('User Name:'), self.name
        print _('User ID:'), self.uid
        print _('Home Directory:'), self.homedir
        print _('Login Shell:'), self.shell
        print _('Main Group:'), self.maingroup
        print _('Groups List:'), ','.join(self.groups)
        print _('Password: ****** '), 
        
    
    def load(self, login):
        '''Load the information stored in the system about a user account.
        Required arguments:
            login = String representing a valid user name in the system.
        '''
        passfile = '/etc/passwd'
        groupfile = '/etc/group'
        self.login = login
        f = open(passfile, 'r')
        passinfo = f.readlines()
        f.close()
        for line in passinfo:
            if line.startswith(login):
                spl = line.split(':')
                uid = spl[2]
                gid = spl[3]
                rname = spl[4]
                homedir = spl[5]
                shell = spl[6]
        self.uid = uid
        self.name = rname
        self.homedir = homedir
        self.shell = shell
        return

class Win(gtk.Window):
    '''User add/edit window
        Arguments:
            account:    An Account object representing the account to be edited'''
    def __init__(self, account = None):
        gtk.Window.__init__(self)
        self.set_position(gtk.WIN_POS_CENTER)
        self.set_default_size(400, 350)
        self.account = account
        if not account.is_new:
            ## Keep a copy of the existing information for comparison purposes
            __unchanged_account_data = account
        
        if not self.account: self.account = Account()
        body = gtk.VBox()   
        
        self.add(body)
        self.notebook = gtk.Notebook()
        body.pack_start(self.notebook, True, True, 2)

        basic = BasicInfo(account = self.account)
        privilege = PrivilegeInfo(account = self.account)
        advanced = AdvancedInfo(account = self.account)
        __tabs__ = []
        __tabs__.append(basic)
        __tabs__.append(privilege)
        __tabs__.append(advanced)
        
        for tab in __tabs__:
            self.notebook.append_page(tab, tab.label)
            if not self.account.is_new:
                tab.refresh_info()
            

    ## Bottom toolbar
        toolbar = gtk.HBox()
        btCancel = gtk.Button('Cancel', gtk.STOCK_CANCEL)
        btCancel.connect('clicked', self._do_exit)
        btOK = gtk.Button('OK', gtk.STOCK_OK)
        
        toolbar.pack_end(btOK, False, False, 4)
        toolbar.pack_end(btCancel, False, False, 4)
        body.pack_start(toolbar, False, False, 4)

    
    def _do_exit(self, widget=None):
        self.hide()
        


class AdvancedInfo(Tab):
    def __init__(self, account = None):
        self.account = account
        Tab.__init__(self, _('Advanced'))
        banner = SectionLabel(_('Advanced Options'))
        self.pack_start(banner, False, False, 4)
        spacer = gtk.Label()
        self.pack_start(spacer, False, False, 4)
        
        line_homedir = gtk.HBox()
        homedir_label = LineLabel(_('Home Directory'))
        homedir_txt = gtk.Entry()
        self._homedir_entry = homedir_txt
        homedir_txt.connect('changed', self.set_account_homedir)
        if not account.is_new: homedir_txt.set_text(self.account.homedir)
        homedir_txt.set_property('sensitive', self.account.is_new)
        line_homedir.pack_start(homedir_label, False, False, 2)
        line_homedir.pack_start(homedir_txt, True, True, 2)
        self.pack_start(line_homedir, False, False, 4)
        maingroup = self._show_maingroup_line()
        self.pack_start(maingroup, False, False, 4)
        shell_line = self._show_shell_line()
        self.pack_start(shell_line, False, False, 4)
        uid_line = self._show_uid_spinner()
        self.pack_start(uid_line, False, False, 4)
    
    def _show_maingroup_line(self):
        line = gtk.HBox()
        label = LineLabel(_('Main Group'))
        line.pack_start(label, False, False, 2)
        f = open('/etc/group', 'r')
        data = f.readlines()
        f.close()
        
        if not self.account.is_new:
            ## Just look for the main group in /etc/group
            for item in data:
                if item.startswith(self.account.login):
                    maingroup = self.account.login
            drop = gtk.combo_box_entry_new_text()
            drop.append_text(maingroup)
            drop.connect('changed', self.set_account_maingroup)
            drop.set_active(0)
            drop.set_property('sensitive', self.account.is_new)
        else:
            ulist = gtk.ListStore(str)
            ulist.append(['Default (username)']) ## Defaults to user name
            for item in data:
                spl = item.split(':')
                if int(spl[2]) > 0 and int(spl[2]) <= 100:
                    ulist.append([spl[0].strip()])
                ## Fixme ^^ User group policy???
                drop = gtk.ComboBox(ulist)
                cell0 = gtk.CellRendererText()
                drop.pack_start(cell0, True)
                drop.add_attribute(cell0, 'text', 0)
                drop.set_active(0)
                drop.set_property('sensitive', self.account.is_new)                   
            
        line.pack_start(drop, True, True, 2)
        return line

    def _show_shell_line(self):
        section = gtk.HBox()
        label = LineLabel(_('Login Shell'))
        section.pack_start(label, False, False, 2)
        no_etc_shells = None
        if os.path.exists('/etc/shells'):
            f = open('/etc/shells', 'r')
            data = f.readlines()
            f.close()
        else:
            no_etc_shells = True
        
        shell_list = gtk.ListStore(str)
        if no_etc_shells is True:
            if os.path.exists('/bin/bash'):
                shell_list.append(['/bin/bash'])
            else:
                ## FIXME: No shells? what here?
                pass
        else:
            for line in data:
                shell_list.append([line.strip()])
        
        drop = gtk.ComboBox(shell_list)
        cell0 = gtk.CellRendererText()
        drop.connect('changed', self.set_account_shell)
        drop.pack_start(cell0, True)
        drop.add_attribute(cell0, 'text', 0)
        
        if self.account.is_new:
            drop.set_active(0)
        else:
            # Find the shell from /etc/passwd and pre-select it here
            x = open('/etc/passwd', 'r')
            udata = x.readlines()
            x.close()
            for line in udata:
                if line.startswith(self.account.login):
                    ushell = line.split(':')[-1]
            
            n = 0
            model = drop.get_model()
            for item in model:
                n += 1
            for x in range(0, n):
                if model[x][0].strip() == self.account.shell.strip():
                    drop.set_active(x)
                    break
            
    
        drop.set_property('sensitive', True)
        section.pack_start(drop, True, True, 2)
        
        return section

    def _show_uid_spinner(self):
        section = gtk.HBox()
        
        label = LineLabel(_('User ID'))
        section.pack_start(label, False, False, 2)
        
        f = open('/etc/passwd', 'r')
        data = f.readlines()
        f.close()
        min_ = 1000
        n_list = []
        
        for line in data:
            spl = line.split(':')
            if int(spl[2]) >= 1000:
                n_list.append(int(spl[2]))
        n_list.sort()
        min_ = max(n_list) + 1
        
        adj = gtk.Adjustment(1000, min_, 10000, 1, 10, 0)
        spinner = gtk.SpinButton(adj, 0, 0)
        self._spinner = spinner
        spinner.connect('value-changed', self.set_account_uid)
        if not self.account.is_new:
            ## find the uid for the existing user and pre-select it
            if self.account.login == 'root':
                adj.set_all(0,0,10000,1,10,0)
                spinner.set_value(0.0)
                spinner.set_property('sensitive', False)
            else:
                adj.set_all(1000,1000,10000,1,10,0)
                for line in data:
                    if line.startswith(self.account.login.strip()):
                        spl1 = line.split(':')
                        uid = int(spl[2])
                        spinner.set_value(uid)
                        spinner.set_property('sensitive', False) ## Disable this for existing accounts.
                        break
            
        section.pack_start(spinner, True, True, 2)
        
        return section
    def set_account_homedir(self, widget):
        self.account.homedir = widget.get_text()
    def set_account_shell(self, widget):
        self.account.shell = widget.get_active_text()
    def set_account_maingroup(self, widget):
        self.account.maingroup = widget.get_active_text()
    def set_account_uid(self, widget):
        if not self.account.is_new: return
        self.account.uid = int(widget.get_value())
    def refresh_info(self):
        if not self.account.is_new:
            self._homedir_entry.set_text(self.account.homedir)
            self._spinner.set_value(float(self.account.uid))
            #print 'values are set'
        else:
            if self.account.login:
                self._homedir_entry.set_text(os.path.join('/home', self.account.login))
        

    
        
class PrivilegeInfo(Tab):  
 
    def __init__(self, account = None):
        Tab.__init__(self, _('Account Privileges'))
        banner = SectionLabel(_('User Privileges'))
        self.pack_start(banner, False, False, 2)
        self.account = account
        if self.account.is_new:
            self.rights_values = self._get_grouplist_with_default_values()
        else:
            self.rights_values = self._get_user_group_list()
        ## set default grouplist
        for entry in self.rights_values:
            if entry[1]:
                self.account.groups.append(entry[0])
        
        sw = gtk.ScrolledWindow()
        sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        tv = self._get_tree()
        sw.add(tv)
        self.pack_start(sw, True, True, 4)
    
        
    def _get_user_group_list(self):
        defaults = self._get_grouplist_with_default_values()
        new = []
        f = open('/etc/group', 'r')
        data = f.readlines()
        f.close()
        grplist = []
        for item in defaults:
            member = False # Unless we find out differently later
            if item[0] == 'users': pass
            if item[0] == self.account.login: pass
            for line in data:
                if line.startswith(item[0]):
                    member = self.account.login in line
                    
            new.append([item[0], member, item[2]])
        return new
        

    def _get_grouplist_with_default_values(self):
        values = [
        ('disk', True, _('Access system storage devices')), \
        ('lp', True,  _('Manage system printers')), \
        ('floppy', True, _('Use Floppy drive')), \
        ('audio', True, _('Use audio devices')), \
        ('video', True, _('Capture video from TV or webcam')), \
        ('scanner', True, _('Use scanners')), \
        ('cdrom', True, _('Use CD/DVD-ROM devices')), \
        ('games', True, _('Play games')), \
        ('slocate', True, _('Find files on the system')), \
        ('plugdev', True, _('Use external storage devices')), \
        ('power', True, _('Suspend and hibernate the system')), \
        ('netdev', True, _('Modify system network connections'))        
        ]
        return values
    def _get_tree(self):
        '''Internal function that pvides a treeview with a list of
        checkbuttons to check off user access'''
        rights = self.rights_values
        store = gtk.ListStore(str, bool, str)
        for right in rights:
            store.append([right[0], right[1], right[2]])
        
        tree = gtk.TreeView(store)
        cell0 = gtk.CellRendererToggle()
        cell0.set_property('activatable', True)
        cell0.connect('toggled', self.checkbox_toggle, tree.get_model())
        col0 = gtk.TreeViewColumn(None, cell0)
        col0.add_attribute(cell0, 'active', 1)
        
        cell1 = gtk.CellRendererText()
        col1 = gtk.TreeViewColumn(None, cell1, text=2)
        tree.append_column(col0)
        tree.append_column(col1)
        
        return tree

    def checkbox_toggle(self, widget, path, model):
        model[path][1] = not model[path][1]
        for item in model:
            if item[1]:
                if not item[0] in self.account.groups:
                    self.account.groups.append(item[0].strip())
            else:
                if item[0] in self.account.groups:
                    self.account.groups.remove(item[0].strip())
                
        print self.account.groups


class BasicInfo(Tab):
    def __init__(self, account = None):
        self.account = account
        Tab.__init__(self, _('Basic Information'))
        banner = SectionLabel(_('Basic Information'))
        self.pack_start(banner, False, False, 4)
        line_login = gtk.HBox()
        login_label = LineLabel(_('Login Name'))
        login_txt = gtk.Entry()
        login_txt.connect('changed', self.set_login_name)
        login_txt.set_property('sensitive', self.account.is_new)
        if not account.is_new: login_txt.set_text(self.account.login)
        line_login.pack_start(login_label, False, False, 2)
        line_login.pack_start(login_txt, True, True, 2)
        self.pack_start(line_login, False, False, 4)
        
        line_name = gtk.HBox()
        name_label = LineLabel(_('Real Name'))
        name_txt = gtk.Entry()
        name_txt.connect('changed', self.set_user_real_name)
        if not account.is_new: name_txt.set_text(self.account.name)
        
        self.pack_start(line_name, False, False, 4)
        line_name.pack_start(name_label, False, False, 2)
        line_name.pack_start(name_txt, True, True, 2)
        
        spacer = gtk.Label()
        self.pack_start(spacer, False, False, 4)
        
        if self.account.is_new:
            ptxt = _('User Password')
        else:
            ptxt = _('Change Password')
        pass_sec = SectionLabel(ptxt)
        self.pack_start(pass_sec, False, False, 4)
        
        line_pass1 = gtk.HBox()
        pass1_label = LineLabel(_('Enter Password'))
        pass1_txt = gtk.Entry()
        pass1_txt.set_property('visibility', False)
        pass1_txt.connect('changed', self.pass1_change)
        line_pass1.pack_start(pass1_label, False, False, 2)
        line_pass1.pack_start(pass1_txt, True, True, 2)
        self.pack_start(line_pass1, False, False, 4)
        
        line_pass2 = gtk.HBox()
        pass2_label = LineLabel(_('Verify Password'))
        pass2_txt = gtk.Entry()
        pass2_txt.set_property('visibility', False)
        pass2_txt.connect('changed', self.pass2_change)
        line_pass2.pack_start(pass2_label, False, False, 2)
        line_pass2.pack_start(pass2_txt, True, True, 2)
        self.pack_start(line_pass2, False, False, 4)
    def pass1_change(self, widget):
        self.account.pass1 = widget.get_text()
        if self.account.pass1 == self.account.pass2: 
            self.account.password = self.account.pass1
        else:
            self.account.password = None
    def pass2_change(self, widget):
        self.account.pass2 = widget.get_text()
        if self.account.pass1 == self.account.pass2:
            self.account.password = self.account.pass1
        else:
            self.account.password = None
    def set_login_name(self, widget):
        ''' Set the login name on the account'''
        self.account.login = widget.get_text()
        ## Set the home dir too
        self.account.homedir = os.path.join('/home', self.account.login)
        ## Update the advanced tab
        for tab in __tabs__:
            tab.refresh_info()
    def set_user_real_name(self, widget):
        ''' Set the comment or real name on the account '''
        self.account.name = widget.get_text()