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adds invisible captcha support #12

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adds invisible captcha support #12

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54 changes: 48 additions & 6 deletions flask_recaptcha.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,8 @@ class DEFAULTS(object):
TYPE = "image"
SIZE = "normal"
TABINDEX = 0
INVISIBLE = "invisible"
ELEMENT_ID = "id_captcha"


class ReCaptcha(object):
Expand All @@ -41,6 +43,7 @@ def __init__(self, app=None, site_key=None, secret_key=None, is_enabled=True, **
self.type = kwargs.get('type', DEFAULTS.TYPE)
self.size = kwargs.get('size', DEFAULTS.SIZE)
self.tabindex = kwargs.get('tabindex', DEFAULTS.TABINDEX)
self.element_id = kwargs.get('element_id', DEFAULTS.ELEMENT_ID)

elif app:
self.init_app(app=app)
Expand All @@ -52,7 +55,8 @@ def init_app(self, app=None):
theme=app.config.get("RECAPTCHA_THEME", DEFAULTS.THEME),
type=app.config.get("RECAPTCHA_TYPE", DEFAULTS.TYPE),
size=app.config.get("RECAPTCHA_SIZE", DEFAULTS.SIZE),
tabindex=app.config.get("RECAPTCHA_TABINDEX", DEFAULTS.TABINDEX))
tabindex=app.config.get("RECAPTCHA_TABINDEX", DEFAULTS.TABINDEX),
element_id=app.config.get("RECAPTCHA_ELEMENT_ID", DEFAULTS.ELEMENT_ID))

@app.context_processor
def get_code():
Expand All @@ -63,11 +67,49 @@ def get_code(self):
Returns the new ReCaptcha code
:return:
"""
return "" if not self.is_enabled else ("""
<script src='//www.google.com/recaptcha/api.js'></script>
<div class="g-recaptcha" data-sitekey="{SITE_KEY}" data-theme="{THEME}" data-type="{TYPE}" data-size="{SIZE}"\
data-tabindex="{TABINDEX}"></div>
""".format(SITE_KEY=self.site_key, THEME=self.theme, TYPE=self.type, SIZE=self.size, TABINDEX=self.tabindex))
if self.is_enabled:
if self.size == DEFAULTS.INVISIBLE:
return """
<div id="{ELEMENT_ID}">
</div>
<script>
var recaptchaCallback = function(token) {{
// recaptcha has been processed
var captcha = document.getElementById("{ELEMENT_ID}"),
fields = captcha.getElementsByTagName('textarea');
if(!fields.length) return;
fields[0].value = token;
}};
var recaptchaOnloadCallback = function(){{
var el = document.getElementById("{ELEMENT_ID}"),
widget_id,
opts = [];
opts['sitekey'] = "{SITE_KEY}";
opts['callback'] = 'recaptchaCallback';
opts['size'] = "{SIZE}";
opts['type'] = "{TYPE}";
opts['tabindex'] = "{TABINDEX}";
widget_id = grecaptcha.render(el, opts);
grecaptcha.execute(widget_id);
}};
</script>
<script src="https://www.google.com/recaptcha/api.js?onload=recaptchaOnloadCallback&render=explicit" async defer></script>
""".format(SITE_KEY=self.site_key,
SIZE=self.size,
ELEMENT_ID=self.element_id,
TABINDEX=self.tabindex,
TYPE=self.type
)
else:
return """
<script src='//www.google.com/recaptcha/api.js'></script>
<div class="g-recaptcha" data-sitekey="{SITE_KEY}"\
data-theme="{THEME}" data-type="{TYPE}" data-size="{SIZE}"\
data-tabindex="{TABINDEX}"></div>
""".format(SITE_KEY=self.site_key, THEME=self.theme,
TYPE=self.type, SIZE=self.size,
TABINDEX=self.tabindex)
return ""

def verify(self, response=None, remote_ip=None):
if self.is_enabled:
Expand Down