implement basic functionality of contact via form->smtp

smtp.py

@@ -0,0 +1,33 @@
+import sys
+import smtplib
+import smtplib.SMTPException
+
+def checkSMTPConnection(app):
+    '''Check connection and login on SMTP server configured in app config'''
+
+    try:
+        if not all([ x in app.conf for x in ["TARGET_SMTP", "TARGET_EMAIL"]:
+            raise smtplib.SMTPException("Missing Configuration.")
+        smtpTarget = smtplib.SMTP(app.config["TARGET_SMTP"])
+        if app.config["TARGET_SMTP_USER"] and app.config["TARGET_SMTP_PASSWORD"]:
+            smtp.login(app.config["TARGET_SMTP_USER"], app.config["TARGET_SMTP_PASSWORD"])
+        smtpTarget.quit()
+    except smtplib.SMTPException as e:
+        if app.config["STMP_MUST_BE_CONNECTED"]:
+            print(e, file=sys.stderr)
+            sys.exit(1)
+        else:
+            print("Warning: SMTP unusable: {}".format(e), file=sys.stderr)
+
+def sendMailFromHtmlForm(app, htmlForm):
+    '''Take the app config and the contact HTML-form and send a mail accordingly'''
+
+    email = htmlForm["email"]
+    name  = htmlForm["name"]
+    message = htmlForm["message"]
+
+    subject = "Subject: {} ({})\n\n".format(flask.request.form["subject"], name)
+
+    smtpTarget = smtplib.SMTP(app.config["TARGET_SMTP"])
+    smtpTarget.sendmail(email, app.config["TARGET_EMAIL"] , message)
+    smtpTarget.quit()