djeuscan: add sendmail email backend

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>

euscanwww/euscanwww/sendmail.py

@@ -0,0 +1,53 @@
+"""sendmail email backend class."""
+
+import threading
+
+from django.conf import settings
+from django.core.mail.backends.base import BaseEmailBackend
+from subprocess import Popen,PIPE
+
+class EmailBackend(BaseEmailBackend):
+    def __init__(self, fail_silently=False, **kwargs):
+        super(EmailBackend, self).__init__(fail_silently=fail_silently)
+        self._lock = threading.RLock()
+
+    def open(self):
+        return True
+
+    def close(self):
+        pass
+
+    def send_messages(self, email_messages):
+        """
+        Sends one or more EmailMessage objects and returns the number of email
+        messages sent.
+        """
+        if not email_messages:
+            return
+        self._lock.acquire()
+        try:
+            num_sent = 0
+            for message in email_messages:
+                sent = self._send(message)
+                if sent:
+                    num_sent += 1
+        finally:
+            self._lock.release()
+        return num_sent
+
+    def _send(self, email_message):
+        """A helper method that does the actual sending."""
+        if not email_message.recipients():
+            return False
+        try:
+            ps = Popen(["sendmail"]+list(email_message.recipients()), \
+                       stdin=PIPE)
+            ps.stdin.write(email_message.message().as_string())
+            ps.stdin.flush()
+            ps.stdin.close()
+            return not ps.wait()
+        except:
+            if not self.fail_silently:
+                raise
+            return False
+        return True