Added systemusers home/directory support

TODO.md

@@ -172,3 +172,8 @@ Remember that, as always with QuerySets, any subsequent chained methods which im
 * validate systemuser.home
 
 * webapp backend option compatibility check?
+
+
+* ServiceBackend.validate() : used for server paths validation
+* ServiceBackend.grant_access() : used for granting access
+* bottom line: allow arbitrary backend methods (underscore method names that are not to be executed?)

orchestra/apps/domains/models.py

@@ -1,3 +1,4 @@
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 

orchestra/apps/systemusers/admin.py

@@ -1,3 +1,6 @@
+import textwrap
+
+from django import forms
 from django.conf.urls import patterns, url
 from django.core.urlresolvers import reverse
 from django.contrib import admin
@@ -11,20 +14,21 @@ from orchestra.admin.utils import wrap_admin_view
 from orchestra.apps.accounts.admin import SelectAccountAdminMixin
 from orchestra.forms import UserCreationForm, UserChangeForm
 
+from . import settings
 from .actions import grant_permission
 from .filters import IsMainListFilter
 from .models import SystemUser
 
 
 class SystemUserAdmin(ChangePasswordAdminMixin, SelectAccountAdminMixin, ExtendedModelAdmin):
-    list_display = ('username', 'account_link', 'shell', 'home', 'display_active', 'display_main')
+    list_display = ('username', 'account_link', 'shell', 'display_home', 'display_active', 'display_main')
     list_filter = ('is_active', 'shell', IsMainListFilter)
     fieldsets = (
         (None, {
             'fields': ('username', 'password', 'account_link', 'is_active')
         }),
         (_("System"), {
-            'fields': ('home', 'shell', 'groups'),
+            'fields': ('shell', ('home', 'directory'), 'groups'),
         }),
     )
     add_fieldsets = (
@@ -32,7 +36,7 @@ class SystemUserAdmin(ChangePasswordAdminMixin, SelectAccountAdminMixin, Extende
             'fields': ('account_link', 'username', 'password1', 'password2')
         }),
         (_("System"), {
-            'fields': ('home', 'shell', 'groups'),
+            'fields': ('shell', ('home', 'directory'), 'groups'),
         }),
     )
     search_fields = ['username']
@@ -57,15 +61,56 @@ class SystemUserAdmin(ChangePasswordAdminMixin, SelectAccountAdminMixin, Extende
     display_main.short_description = _("Main")
     display_main.boolean = True
     
+    def display_home(self, user):
+        return user.get_home()
+    display_home.short_description = _("Home")
+    display_home.admin_order_field = 'home'
+    
     def get_form(self, request, obj=None, **kwargs):
-        """ exclude self reference on groups """
         form = super(SystemUserAdmin, self).get_form(request, obj=obj, **kwargs)
+        duplicate = lambda n: (n, n)
         if obj:
             # Has to be done here and not in the form because of strange phenomenon
             # derived from monkeypatching formfield.widget.render on AccountAdminMinxin,
             # don't ask.
             formfield = form.base_fields['groups']
             formfield.queryset = formfield.queryset.exclude(id=obj.id)
+            username = obj.username
+            choices=(
+                duplicate(self.account.main_systemuser.get_home()),
+                duplicate(obj.get_home()),
+            )
+        else:
+            username = '<username>'
+            choices=(
+                duplicate(self.account.main_systemuser.get_home()),
+                duplicate(SystemUser(username=username).get_home()),
+            )
+        form.base_fields['home'].widget = forms.Select(choices=choices)
+        if obj and (obj.is_main or obj.has_shell):
+            # hidde home option for shell users
+            form.base_fields['home'].widget = forms.HiddenInput()
+            form.base_fields['directory'].widget = forms.HiddenInput()
+        else:
+            # Some javascript for hidde home/directory inputs when convinient
+            form.base_fields['shell'].widget.attrs = {
+                'onChange': textwrap.dedent("""\
+                    field = $(".form-row.field-home.field-directory");
+                    if ($.inArray(this.value, %s) < 0) {
+                        field.addClass("hidden");
+                    } else {
+                       field.removeClass("hidden");
+                    };""" % str(list(settings.SYSTEMUSERS_DISABLED_SHELLS)))
+            }
+        form.base_fields['home'].widget.attrs = {
+            'onChange': textwrap.dedent("""\
+                field = $(".field-box.field-directory");
+                if (this.value.search("%s") > 0) {
+                   field.addClass("hidden");
+                } else {
+                   field.removeClass("hidden");
+                };""" % username)
+        }
         return form
     
     def has_delete_permission(self, request, obj=None):
@@ -73,4 +118,5 @@ class SystemUserAdmin(ChangePasswordAdminMixin, SelectAccountAdminMixin, Extende
             return False
         return super(SystemUserAdmin, self).has_delete_permission(request, obj=obj)
 
+
 admin.site.register(SystemUser, SystemUserAdmin)

orchestra/apps/systemusers/migrations/0001_initial.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+from django.conf import settings
+import django.core.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SystemUser',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('username', models.CharField(help_text='Required. 64 characters or fewer. Letters, digits and ./-/_ only.', unique=True, max_length=64, verbose_name='username', validators=[django.core.validators.RegexValidator(b'^[\\w.-]+$', 'Enter a valid username.', b'invalid')])),
+                ('password', models.CharField(max_length=128, verbose_name='password')),
+                ('home', models.CharField(help_text="Home directory relative to account's ~main_user", max_length=256, verbose_name='home', blank=True)),
+                ('shell', models.CharField(default=b'/dev/null', max_length=32, verbose_name='shell', choices=[(b'/dev/null', 'No shell, FTP only'), (b'/bin/rssh', 'No shell, SFTP/RSYNC only'), (b'/bin/bash', b'/bin/bash'), (b'/bin/sh', b'/bin/sh')])),
+                ('is_active', models.BooleanField(default=True, help_text='Designates whether this account should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
+                ('account', models.ForeignKey(related_name='systemusers', verbose_name='Account', to=settings.AUTH_USER_MODEL)),
+                ('groups', models.ManyToManyField(help_text='A new group will be created for the user. Which additional groups would you like them to be a member of?', to='systemusers.SystemUser', blank=True)),
+            ],
+            options={
+            },
+            bases=(models.Model,),
+        ),
+    ]

orchestra/apps/systemusers/migrations/0002_systemuser_relative_to_main.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('systemusers', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='systemuser',
+            name='relative_to_main',
+            field=models.BooleanField(default=False, choices=[(True, b'Hola'), (False, b'adeu')]),
+            preserve_default=True,
+        ),
+    ]

orchestra/apps/systemusers/migrations/0003_auto_20141114_1340.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('systemusers', '0002_systemuser_relative_to_main'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='systemuser',
+            name='relative_to_main',
+        ),
+        migrations.AddField(
+            model_name='systemuser',
+            name='directory',
+            field=models.CharField(default='', max_length=256, verbose_name='directory', blank=True),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='systemuser',
+            name='home',
+            field=models.CharField(help_text='This will be your starting location when you login with this sftp user.', max_length=256, verbose_name='home'),
+            preserve_default=True,
+        ),
+    ]

orchestra/apps/systemusers/models.py

@@ -29,10 +29,12 @@ class SystemUser(models.Model):
     password = models.CharField(_("password"), max_length=128)
     account = models.ForeignKey('accounts.Account', verbose_name=_("Account"),
             related_name='systemusers')
-    home = models.CharField(_("home"), max_length=256, blank=True,
-            help_text=_("Home directory relative to account's ~main_user"))
-    shell = models.CharField(_("shell"), max_length=32,
-            choices=settings.SYSTEMUSERS_SHELLS, default=settings.SYSTEMUSERS_DEFAULT_SHELL)
+    home = models.CharField(_("home"), max_length=256, blank=False,
+            help_text=_("Starting location when login with this no-shell user."))
+    directory = models.CharField(_("directory"), max_length=256, blank=True,
+            help_text=_("Optional directory relative to user's home."))
+    shell = models.CharField(_("shell"), max_length=32, choices=settings.SYSTEMUSERS_SHELLS,
+            default=settings.SYSTEMUSERS_DEFAULT_SHELL)
     groups = models.ManyToManyField('self', blank=True,  symmetrical=False,
             help_text=_("A new group will be created for the user. "
                         "Which additional groups would you like them to be a member of?"))
@@ -61,18 +63,26 @@ class SystemUser(models.Model):
             return self.account.main_systemuser_id == self.pk
         return self.account.username == self.username
     
+    @property
+    def has_shell(self):
+        return self.shell not in settings.SYSTEMUSERS_DISABLED_SHELLS
+    
+    def clean(self):
+        if self.has_shell or self.is_main:
+            self.home = self.get_base_home()
+            self.directory = ''
+    
     def set_password(self, raw_password):
         self.password = make_password(raw_password)
     
-    def get_home(self):
-        if self.is_main:
+    def get_base_home(self):
         context = {
             'username': self.username,
         }
-            basehome = settings.SYSTEMUSERS_HOME % context
-        else:
-            basehome = self.account.main_systemuser.get_home()
-        return os.path.join(basehome, self.home)
+        return settings.SYSTEMUSERS_HOME % context
+    
+    def get_home(self):
+        return os.path.join(self.home or self.get_base_home(), self.directory)
 
 
 services.register(SystemUser)

orchestra/apps/systemusers/settings.py

@@ -10,9 +10,16 @@ SYSTEMUSERS_SHELLS = getattr(settings, 'SYSTEMUSERS_SHELLS', (
     ('/bin/sh', "/bin/sh"),
 ))
 
+
 SYSTEMUSERS_DEFAULT_SHELL = getattr(settings, 'SYSTEMUSERS_DEFAULT_SHELL', '/dev/null')
 
 
+SYSTEMUSERS_DISABLED_SHELLS = getattr(settings, 'SYSTEMUSERS_DISABLED_SHELLS', (
+    '/dev/null',
+    '/bin/rssh',
+))
+
+
 SYSTEMUSERS_HOME = getattr(settings, 'SYSTEMUSERS_HOME', '/home/./%(username)s')