def launch_experiment():
consumer_key = session.get('consumer')
if consumer_key is None:
return gettext("consumer key not found")
permission_to_lt_user = PermissionToLtUser.find(key = consumer_key)
if permission_to_lt_user is None:
return gettext("permission not found")
p_to_lt = permission_to_lt_user.permission_to_lt
courses_configurations = [] # No such concept in the LTI version
request_payload = {} # This could be populated in the HTML. Pending.
lt_configuration = p_to_lt.configuration
db_laboratory = p_to_lt.laboratory
db_rlms = db_laboratory.rlms
author = session.get('author_identifier', '(not in session)')
referer = request.referrer
ManagerClass = get_manager_class(db_rlms.kind, db_rlms.version)
remote_laboratory = ManagerClass(db_rlms.configuration)
response = remote_laboratory.reserve(db_laboratory.laboratory_id,
author,
p_to_lt.lt.name,
lt_configuration,
courses_configurations,
request_payload,
{
'user_agent' : unicode(request.user_agent),
'from_ip' : request.remote_addr,
'referer' : referer,
})
load_url = response['load_url']
return redirect(load_url)
def verify_credentials():
if 'oauth_consumer_key' in request.form:
consumer_key = request.form['oauth_consumer_key']
permission_to_lt_user = PermissionToLtUser.find(key = consumer_key)
# TODO: check for nonce
# TODO: check for old requests
if permission_to_lt_user is None:
response = Response(render_template('lti/errors.html', message = gettext("Invalid consumer key. Please check it again.")))
# response.status_code = 412
return response
secret = permission_to_lt_user.secret
# The original dict is in unicode, which does not work with ToolProvider
USE_UNICODE = False
if USE_UNICODE:
data_dict = request.form.to_dict()
else:
data_dict = {}
for key, value in request.form.to_dict().iteritems():
data_dict[key.encode('utf8')] = value.encode('utf8')
tool_provider = ToolProvider(consumer_key, secret, data_dict)
try:
return_value = tool_provider.valid_request(request)
except:
traceback.print_exc()
response = Response(render_template('lti/errors.html', message = gettext("Invalid secret: could not validate request.")))
# response.status_code = 403
return response
else:
if return_value == False:
response = Response(render_template('lti/errors.html', message = gettext("Request checked and failed. Please check that the 'secret' is correct.")))
# response.status_code = 403
return response
session['author_identifier'] = request.form['user_id']
if 'lis_person_name_full' in request.form:
session['user_fullname'] = request.form['lis_person_name_full']
if 'context_id' in request.form:
session['group_id'] = request.form['context_id']
if 'context_title' in request.form:
session['group_name'] = request.form['context_title']
if 'launch_presentation_locale' in request.form:
session['launch_locale'] = request.form['launch_presentation_locale']
if 'launch_presentation_document_target' in request.form:
session['launch_presentation_document_target'] = request.form['launch_presentation_document_target']
if 'launch_presentation_return_url' in request.form:
session['launch_presentation_return_url'] = request.form['launch_presentation_return_url']
session['consumer'] = consumer_key
session['last_request'] = time()
return
elif 'consumer' in session:
if float(session['last_request']) - time() < 60 * 60 * 5: # Five Hours
session['last_request'] = time()
return
else:
response = Response(render_template('lti/errors.html', message = gettext("Session not initialized. Are you a LMS?")))
# response.status_code = 403
return response
def start_ims():
consumer_key = session.get('consumer')
permission_to_lt_user = PermissionToLtUser.find(key = consumer_key)
# current_role = set(request.form['roles'].split(','))
#
# We could do something with the role (e.g., defining "oh, you're an instructor, do you want to use who used the system?").
# However, at this moment, we don't do anything.
# In the future, do:
#
# if 'Learner' in current_role:
# ...
# elif 'Instructor' in current_role:
# ....
#
laboratory = permission_to_lt_user.permission_to_lt.laboratory
local_identifier = permission_to_lt_user.permission_to_lt.local_identifier
return render_template('lti/display_lab.html', laboratory = laboratory, local_identifier = local_identifier)
def launch_experiment():
consumer_key = session.get('consumer')
if consumer_key is None:
return gettext("consumer key not found")
permission_to_lt_user = PermissionToLtUser.find(key = consumer_key)
if permission_to_lt_user is None:
return gettext("permission not found")
p_to_lt = permission_to_lt_user.permission_to_lt
courses_configurations = [] # No such concept in the LTI version
request_payload = {} # This could be populated in the HTML. Pending.
lt_configuration = p_to_lt.configuration
db_laboratory = p_to_lt.laboratory
db_rlms = db_laboratory.rlms
author = session.get('author_identifier', '(not in session)')
referer = request.referrer
ManagerClass = get_manager_class(db_rlms.kind, db_rlms.version, db_rlms.id)
remote_laboratory = ManagerClass(db_rlms.configuration)
request_info = {
'user_agent' : unicode(request.user_agent),
'from_ip' : remote_addr(),
'referer' : referer,
}
for key in 'group_name', 'group_id', 'user_fullname':
if key in session:
request_info[key] = session[key]
kwargs = {}
if 'launch_locale' in session:
kwargs['locale'] = session['launch_locale'].split('-')[0].split('_')[0]
response = remote_laboratory.reserve(db_laboratory.laboratory_id,
author,
p_to_lt.lt.name,
lt_configuration,
courses_configurations,
request_payload,
request_info,
**kwargs)
load_url = response['load_url']
return redirect(load_url)
def start_ims():
consumer_key = session.get('consumer')
return_url = session.get('launch_presentation_return_url') or ''
permission_to_lt_user = PermissionToLtUser.find(key=consumer_key)
# current_role = set(request.form['roles'].split(','))
#
# We could do something with the role (e.g., defining "oh, you're an instructor, do you want to use who used the system?").
# However, at this moment, we don't do anything.
# In the future, do:
#
# if 'Learner' in current_role:
# ...
# elif 'Instructor' in current_role:
# ....
#
laboratory = permission_to_lt_user.permission_to_lt.laboratory
local_identifier = permission_to_lt_user.permission_to_lt.local_identifier
return render_template('lti/display_lab.html',
laboratory=laboratory,
local_identifier=local_identifier,
return_url=return_url)
def launch_experiment():
consumer_key = session.get('consumer')
if consumer_key is None:
return gettext("consumer key not found")
permission_to_lt_user = PermissionToLtUser.find(key=consumer_key)
if permission_to_lt_user is None:
return gettext("permission not found")
p_to_lt = permission_to_lt_user.permission_to_lt
courses_configurations = [] # No such concept in the LTI version
request_payload = {} # This could be populated in the HTML. Pending.
lt_configuration = p_to_lt.configuration
db_laboratory = p_to_lt.laboratory
db_rlms = db_laboratory.rlms
author = session.get('author_identifier', '(not in session)')
referer = request.referrer
ManagerClass = get_manager_class(db_rlms.kind, db_rlms.version, db_rlms.id)
remote_laboratory = ManagerClass(db_rlms.configuration)
request_info = {
'user_agent': unicode(request.user_agent),
'from_ip': remote_addr(),
'referer': referer,
}
for key in 'group_name', 'group_id', 'user_fullname':
if key in session:
request_info[key] = session[key]
kwargs = {}
if 'launch_locale' in session:
kwargs['locale'] = session['launch_locale'].split('-')[0].split('_')[0]
response = remote_laboratory.reserve(db_laboratory.laboratory_id, author,
p_to_lt.lt.name, lt_configuration,
courses_configurations,
request_payload, request_info,
**kwargs)
load_url = response['load_url']
return redirect(load_url)
def verify_credentials():
if 'oauth_consumer_key' in request.form:
consumer_key = request.form['oauth_consumer_key']
permission_to_lt_user = PermissionToLtUser.find(key=consumer_key)
# TODO: check for nonce
# TODO: check for old requests
if permission_to_lt_user is None:
response = Response(
render_template(
'lti/errors.html',
message=gettext(
"Invalid consumer key. Please check it again.")))
# response.status_code = 412
return response
secret = permission_to_lt_user.secret
# The original dict is in unicode, which does not work with ToolProvider
USE_UNICODE = False
if USE_UNICODE:
data_dict = request.form.to_dict()
else:
data_dict = {}
for key, value in request.form.to_dict().iteritems():
data_dict[key.encode('utf8')] = value.encode('utf8')
tool_provider = ToolProvider(consumer_key, secret, data_dict)
try:
return_value = tool_provider.valid_request(request)
except:
traceback.print_exc()
response = Response(
render_template(
'lti/errors.html',
message=gettext(
"Invalid secret: could not validate request.")))
# response.status_code = 403
return response
else:
if return_value == False:
response = Response(
render_template(
'lti/errors.html',
message=gettext(
"Request checked and failed. Please check that the 'secret' is correct."
)))
# response.status_code = 403
return response
session['author_identifier'] = request.form['user_id']
if 'lis_person_name_full' in request.form:
session['user_fullname'] = request.form['lis_person_name_full']
if 'context_id' in request.form:
session['group_id'] = request.form['context_id']
if 'context_title' in request.form:
session['group_name'] = request.form['context_title']
if 'launch_presentation_locale' in request.form:
session['launch_locale'] = request.form[
'launch_presentation_locale']
if 'launch_presentation_document_target' in request.form:
session['launch_presentation_document_target'] = request.form[
'launch_presentation_document_target']
if 'launch_presentation_return_url' in request.form:
session['launch_presentation_return_url'] = request.form[
'launch_presentation_return_url']
session['consumer'] = consumer_key
session['last_request'] = time()
return
elif 'consumer' in session:
if float(session['last_request']) - time() < 60 * 60 * 5: # Five Hours
session['last_request'] = time()
return
else:
response = Response(
render_template(
'lti/errors.html',
message=gettext("Session not initialized. Are you a LMS?")))
# response.status_code = 403
return response
