optionally send email when a key is added

django_sshkey/models.py

@@ -29,7 +29,10 @@
 from django.db import models
 from django.contrib.auth.models import User
 from django.core.exceptions import ValidationError
+from django.db.models.signals import pre_save
+from django.dispatch import receiver
 from django_sshkey.util import PublicKeyParseError, pubkey_parse
+from django_sshkey import settings
 
 class UserKey(models.Model):
   user = models.ForeignKey(User, db_index=True)
@@ -97,3 +100,21 @@ class UserKey(models.Model):
   def touch(self):
     import datetime
     self.last_used = datetime.datetime.now()
+
+@receiver(pre_save, sender=UserKey)
+def send_email_add_key(sender, instance, **kwargs):
+  if not settings.SSHKEY_EMAIL_ADD_KEY or instance.pk:
+    return
+  meta = getattr(instance, 'META', None)
+  remote_addr = None
+  if meta:
+    remote_addr = meta.get('REMOTE_ADDR')
+  body = settings.SSHKEY_EMAIL_ADD_KEY_BODY.format(
+    user_first_name = instance.user.first_name,
+    user_last_name = instance.user.last_name,
+    user_full_name = instance.user.get_full_name(),
+    key_name = instance.name,
+    key_fingerprint = instance.fingerprint,
+    remote_addr = remote_addr or "<unknown>",
+  )
+  instance.user.email_user(settings.SSHKEY_EMAIL_ADD_KEY_SUBJECT, body)

django_sshkey/settings.py

@@ -29,3 +29,15 @@
 from django.conf import settings
 
 SSHKEY_AUTHORIZED_KEYS_OPTIONS = getattr(settings, 'SSHKEY_AUTHORIZED_KEYS_OPTIONS', None)
+SSHKEY_EMAIL_ADD_KEY = getattr(settings, 'SSHKEY_EMAIL_ADD_KEY', True)
+SSHKEY_EMAIL_ADD_KEY_SUBJECT = getattr(settings, 'SSHKEY_EMAIL_ADD_KEY_SUBJECT',
+  "A new public key was added to your account"
+)
+SSHKEY_EMAIL_ADD_KEY_BODY = getattr(settings, 'SSHKEY_EMAIL_ADD_KEY_BODY',
+  "{user_first_name},\n\n"
+  "The following SSH public key was added to your account from {remote_addr}:\n\n"
+  "{key_name}\n"
+  "{key_fingerprint}\n\n"
+  "If you believe this key was added in error, you should delete the key."
+)
+DEFAULT_FROM_EMAIL = settings.DEFAULT_FROM_EMAIL

django_sshkey/views.py

@@ -77,6 +77,7 @@ def userkey_list(request):
 def userkey_add(request):
   if request.method == 'POST':
     userkey = UserKey(user=request.user)
+    userkey.META = request.META
     form = UserKeyForm(request.POST, instance=userkey)
     if form.is_valid():
       form.save()

testproject/settings.py

 # Django settings for testproject project.
 
+import getpass
+import socket
+
 DEBUG = True
 TEMPLATE_DEBUG = DEBUG
 
+DEFAULT_FROM_EMAIL = '%s@%s' % (getpass.getuser(), socket.gethostname())
+
 ADMINS = (
     # ('Your Name', 'your_email@example.com'),
 )