discourse/app/models/discourse_single_sign_on.rb

155 lines
4.5 KiB
Ruby

require_dependency 'single_sign_on'
class DiscourseSingleSignOn < SingleSignOn
def self.sso_url
SiteSetting.sso_url
end
def self.sso_secret
SiteSetting.sso_secret
end
def self.generate_url(return_path="/")
sso = new
sso.nonce = SecureRandom.hex
sso.register_nonce(return_path)
sso.to_url
end
def register_nonce(return_path)
if nonce
$redis.setex(nonce_key, NONCE_EXPIRY_TIME, return_path)
end
end
def nonce_valid?
nonce && $redis.get(nonce_key).present?
end
def return_path
$redis.get(nonce_key) || "/"
end
def expire_nonce!
if nonce
$redis.del nonce_key
end
end
def nonce_key
"SSO_NONCE_#{nonce}"
end
def lookup_or_create_user
sso_record = SingleSignOnRecord.find_by(external_id: external_id)
if sso_record && user = sso_record.user
sso_record.last_payload = unsigned_payload
else
user = match_email_or_create_user
sso_record = user.single_sign_on_record
end
# if the user isn't new or it's attached to the SSO record we might be overriding username or email
unless user.new_record?
change_external_attributes_and_override(sso_record, user)
end
if sso_record && (user = sso_record.user) && !user.active
user.active = true
user.save!
user.enqueue_welcome_message('welcome_user')
end
custom_fields.each do |k,v|
user.custom_fields[k] = v
end
# optionally save the user and sso_record if they have changed
user.save!
sso_record.save!
sso_record && sso_record.user
end
private
def match_email_or_create_user
user = User.find_by_email(email)
try_name = name.blank? ? nil : name
try_username = username.blank? ? nil : username
user_params = {
email: email,
name: User.suggest_name(try_name || try_username || email),
username: UserNameSuggester.suggest(try_username || try_name || email),
}
if user || user = User.create!(user_params)
if sso_record = user.single_sign_on_record
sso_record.last_payload = unsigned_payload
sso_record.external_id = external_id
else
user.create_single_sign_on_record(last_payload: unsigned_payload,
external_id: external_id,
external_username: username,
external_email: email,
external_name: name)
end
end
user
end
def change_external_attributes_and_override(sso_record, user)
if SiteSetting.sso_overrides_email && email != sso_record.external_email
# set the user's email to whatever came in the payload
user.email = email
end
if SiteSetting.sso_overrides_username && username != sso_record.external_username && user.username != username
# we have an external username change, and the user's current username doesn't match
# run it through the UserNameSuggester to override it
user.username = UserNameSuggester.suggest(username || name || email)
end
if SiteSetting.sso_overrides_name && name != sso_record.external_name && user.name != name
# we have an external name change, and the user's current name doesn't match
# run it through the name suggester to override it
user.name = User.suggest_name(name || username || email)
end
if SiteSetting.sso_overrides_avatar && (
avatar_force_update == "true" ||
avatar_force_update.to_i != 0 ||
sso_record.external_avatar_url != avatar_url)
begin
tempfile = FileHelper.download(avatar_url, 1.megabyte, "sso-avatar", true)
ext = FastImage.type(tempfile).to_s
tempfile.rewind
upload = Upload.create_for(user.id, tempfile, "external-avatar." + ext, File.size(tempfile.path), { origin: avatar_url })
user.uploaded_avatar_id = upload.id
if !user.user_avatar.contains_upload?(upload.id)
user.user_avatar.custom_upload_id = upload.id
end
rescue SocketError
# skip saving, we are not connected to the net
Rails.logger.warn "Failed to download external avatar: #{avatar_url}, socket error - user id #{ user.id }"
ensure
tempfile.close! if tempfile && tempfile.respond_to?(:close!)
end
end
# change external attributes for sso record
sso_record.external_username = username
sso_record.external_email = email
sso_record.external_name = name
sso_record.external_avatar_url = avatar_url
end
end