def lti_tool():
key = request.form.get('oauth_consumer_key')
if key:
secret = oauth_creds.get(key)
if secret:
tool_provider = ToolProvider(key, secret, request.form)
else:
tool_provider = ToolProvider(None, None, request.form)
tool_provider.lti_msg = 'Your consumer didn\'t use a recognized key'
tool_provider.lti_errorlog = 'You did it wrong!'
return render_template('error.html', message = 'Consumer key wasn\'t recognized', params = request.form)
else:
return render_template('error.html', message='No consumer key')
if not tool_provider.is_launch_request():
print 'invalid request'
return render_template('error.html', message='OAuth signature was invalid', params=request.form)
if time() - int(tool_provider.oauth_timestamp) > 60*60:
print 'timed out'
return render_template('error.html', message='Your request is too old.')
if was_nonce_used_in_last_x_minutes(tool_provider.oauth_nonce, 60):
print 'nonce error'
return render_template('error.html', message='Why are you reusing the nonce?')
session['launch_params'] = tool_provider.to_params()
username = tool_provider.username('Dude')
if tool_provider.is_outcome_service():
return render_template('assessment.html', username=username)
else:
tool_provider.lti_msg = 'This tool does not return a score.'
return render_template('boring_tool', username=username, student=tool_provider.is_student(), instructor=tool_provider.is_teacher(),
roles=tool_provider.roles, launch_presentation_return_url=tool_provider.launch_presentation_return_url)
def assessment():
if session['launch_params']:
key = session['launch_params']['oauth_consumer_key']
else:
return render_template('error.html', message='The tool never launched')
tool_provider = ToolProvider(key, oauth_creds[key], session['launch_params'])
if not tool_provider.is_outcome_service():
return render_template('error.html', message='The tool wasn\'t launched as an outcome service.')
# Post the score to the ToolConsumer
score = request.form.get('score')
response = tool_provider.post_replace_result(request.form.get('score'))
print score
tool_provider.lti_message = 'Message shown when arriving back at Tool Consumer.'
return render_template('assessment_finished.html', score=score)
