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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package console
import (
"context"
"net/url"
echo "github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
"go.thethings.network/lorawan-stack/pkg/component"
web_errors "go.thethings.network/lorawan-stack/pkg/errors/web"
"go.thethings.network/lorawan-stack/pkg/web"
"go.thethings.network/lorawan-stack/pkg/web/oauthclient"
"go.thethings.network/lorawan-stack/pkg/webui"
)
// UIConfig is the combined configuration for the Console UI.
type UIConfig struct {
webui.TemplateData `name:",squash"`
FrontendConfig `name:",squash"`
}
// StackConfig is the configuration of the stack components.
type StackConfig struct {
IS webui.APIConfig `json:"is" name:"is"`
GS webui.APIConfig `json:"gs" name:"gs"`
NS webui.APIConfig `json:"ns" name:"ns"`
AS webui.APIConfig `json:"as" name:"as"`
JS webui.APIConfig `json:"js" name:"js"`
EDTC webui.APIConfig `json:"edtc" name:"edtc"`
QRG webui.APIConfig `json:"qrg" name:"qrg"`
}
// FrontendConfig is the configuration for the Console frontend.
type FrontendConfig struct {
Language string `json:"language" name:"-"`
SupportLink string `json:"support_link" name:"support-link" description:"The URI that the support button will point to"`
StackConfig `json:"stack_config" name:",squash"`
}
// Config is the configuration for the Console.
type Config struct {
OAuth oauthclient.Config `name:"oauth"`
Mount string `name:"mount" description:"Path on the server where the Console will be served"`
UI UIConfig `name:"ui"`
}
// Console is the Console component.
type Console struct {
*component.Component
oc *oauthclient.OAuthClient
config Config
}
// New returns a new Console.
func New(c *component.Component, config Config) (*Console, error) {
config.OAuth.StateCookieName = "_console_state"
config.OAuth.AuthCookieName = "_console_auth"
config.OAuth.RootURL = config.UI.CanonicalURL
oc, err := oauthclient.New(c, config.OAuth)
if err != nil {
return nil, err
}
console := &Console{
Component: c,
oc: oc,
config: config,
}
if console.config.Mount == "" {
console.config.Mount = console.config.UI.MountPath()
}
c.RegisterWeb(console)
return console, nil
}
type ctxKeyType struct{}
var ctxKey ctxKeyType
func (console *Console) configFromContext(ctx context.Context) *Config {
if config, ok := ctx.Value(ctxKey).(*Config); ok {
return config
}
return &console.config
}
// path extracts the mounted location from the public Console URL.
func path(u string) (string, error) {
p, err := url.Parse(u)
if err != nil {
return "", err
}
if p.Path == "" {
return "/", nil
}
return p.Path, nil
}
// RegisterRoutes implements web.Registerer. It registers the Console to the web server.
func (console *Console) RegisterRoutes(server *web.Server) {
group := server.Group(
console.config.Mount,
func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
config := console.configFromContext(c.Request().Context())
c.Set("template_data", config.UI.TemplateData)
frontendConfig := config.UI.FrontendConfig
frontendConfig.Language = config.UI.TemplateData.Language
c.Set("app_config", struct {
FrontendConfig
}{
FrontendConfig: frontendConfig,
})
return next(c)
}
},
web_errors.ErrorMiddleware(map[string]web_errors.ErrorRenderer{
"text/html": webui.Template,
}),
)
api := group.Group("/api", middleware.CSRF())
api.GET("/auth/token", console.oc.HandleToken)
api.POST("/auth/logout", console.oc.HandleLogout)
page := group.Group("", middleware.CSRFWithConfig(middleware.CSRFConfig{
TokenLookup: "form:csrf",
}))
page.GET("/oauth/callback", console.oc.HandleCallback)
group.GET("/login/ttn-stack", console.oc.HandleLogin)
if console.config.Mount != "" && console.config.Mount != "/" {
group.GET("", webui.Template.Handler, middleware.CSRF())
}
group.GET("/*", webui.Template.Handler, middleware.CSRF())
}