When updating a user's password, also update the POSIX user's password, when needed.

actions/change-user-password

@@ -0,0 +1,34 @@
+#!/bin/bash
+#
+# This file is part of Plinth.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Must be run as root.
+
+username="$1"
+password="$2"
+
+getent passwd "$username"
+if [ $? -ne 0 ]; then
+    echo "Failed: user not found"
+    exit
+fi
+
+echo "$username:$password" | chpasswd
+if [ $? -ne 0 ]; then
+    echo "Failed: could not set user password"
+    exit
+fi

plinth/modules/users/forms.py

@@ -16,7 +16,7 @@
 #
 
 from django import forms
-from django.contrib.auth.forms import UserCreationForm
+from django.contrib.auth.forms import UserCreationForm, SetPasswordForm
 from gettext import gettext as _
 
 from plinth import actions
@@ -39,3 +39,15 @@ class CreateUserForm(UserCreationForm):
                 'create-user',
                 [user.username, self.cleaned_data['password1']])
         return user
+
+
+class UserChangePasswordForm(SetPasswordForm):
+    """Custom form that also updates password for POSIX users."""
+
+    def save(self, commit=True):
+        user = super(UserChangePasswordForm, self).save(commit)
+        if commit:
+            actions.superuser_run(
+                'change-user-password',
+                [user.username, self.cleaned_data['new_password1']])
+        return user

plinth/modules/users/views.py

@@ -18,7 +18,6 @@
 from django import forms
 from django.contrib import messages
 from django.contrib.auth import update_session_auth_hash
-from django.contrib.auth.forms import SetPasswordForm
 from django.contrib.auth.models import User
 from django.contrib.messages.views import SuccessMessageMixin
 from django.core.urlresolvers import reverse, reverse_lazy
@@ -27,7 +26,7 @@ from django.views.generic.edit import (CreateView, DeleteView, UpdateView,
 from django.views.generic import ListView
 from gettext import gettext as _
 
-from .forms import CreateUserForm
+from .forms import CreateUserForm, UserChangePasswordForm
 
 
 subsubmenu = [{'url': reverse_lazy('users:index'),
@@ -112,7 +111,7 @@ class UserDelete(ContextMixin, DeleteView):
 class UserChangePassword(ContextMixin, SuccessMessageMixin, FormView):
     """View to change user password."""
     template_name = 'users_change_password.html'
-    form_class = SetPasswordForm
+    form_class = UserChangePasswordForm
     title = _('Change Password')
     success_message = _('Password changed successfully.')