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Validate Email regex before submitting forms

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This commit is contained in:
Yannik Rödel 2024-04-04 17:47:55 +02:00
parent f36e4d1548
commit 717acb8efe
1 changed files with 7 additions and 0 deletions
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7
cgi-bin/form.py
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@ -34,6 +34,9 @@ except IOError:
HONEYPOT_FIELD_NAME = "addressline1"
# This regex merely validates what the in-browser form validation already checks and
# isn't all too strict.
EMAIL_REGEX = re.compile(r"^[^ ]+@[^ ]+\.[^ ]+$")
SITE_DIRECTORY = os.environ.get("SITE_DIRECTORY", "")
request_uri = os.environ.get("REQUEST_URI", "").lower().rstrip("/")
@ -183,7 +186,11 @@ if not isinstance(hcaptcha_data, Mapping) or not hcaptcha_data.get("success", Fa
# Extract all the actually provided form data. This is different from form to
# form (see the match block below).
contact_name = get_form_value("contactname")
contact_email = get_form_value("contactemail")
if not EMAIL_REGEX.fullmatch(contact_email):
fail("400 Bad Request", "Invalid Email address")
message = get_form_value("message", "[Keine Nachricht hinterlassen]")
attachment: Optional[tuple[str, bytes]] = None