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miniflux/ui/oauth2_callback.go
2018-08-24 21:56:39 -07:00

127 lines
3.4 KiB
Go

// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package ui // import "miniflux.app/ui"
import (
"net/http"
"miniflux.app/http/context"
"miniflux.app/http/cookie"
"miniflux.app/http/request"
"miniflux.app/http/response"
"miniflux.app/http/response/html"
"miniflux.app/http/route"
"miniflux.app/logger"
"miniflux.app/model"
"miniflux.app/ui/session"
)
// OAuth2Callback receives the authorization code and create a new session.
func (c *Controller) OAuth2Callback(w http.ResponseWriter, r *http.Request) {
ctx := context.New(r)
sess := session.New(c.store, ctx)
provider := request.Param(r, "provider", "")
if provider == "" {
logger.Error("[OAuth2] Invalid or missing provider")
response.Redirect(w, r, route.Path(c.router, "login"))
return
}
code := request.QueryParam(r, "code", "")
if code == "" {
logger.Error("[OAuth2] No code received on callback")
response.Redirect(w, r, route.Path(c.router, "login"))
return
}
state := request.QueryParam(r, "state", "")
if state == "" || state != ctx.OAuth2State() {
logger.Error(`[OAuth2] Invalid state value: got "%s" instead of "%s"`, state, ctx.OAuth2State())
response.Redirect(w, r, route.Path(c.router, "login"))
return
}
authProvider, err := getOAuth2Manager(c.cfg).Provider(provider)
if err != nil {
logger.Error("[OAuth2] %v", err)
response.Redirect(w, r, route.Path(c.router, "login"))
return
}
profile, err := authProvider.GetProfile(code)
if err != nil {
logger.Error("[OAuth2] %v", err)
response.Redirect(w, r, route.Path(c.router, "login"))
return
}
if ctx.IsAuthenticated() {
user, err := c.store.UserByExtraField(profile.Key, profile.ID)
if err != nil {
html.ServerError(w, err)
return
}
if user != nil {
logger.Error("[OAuth2] User #%d cannot be associated because %s is already associated", ctx.UserID(), user.Username)
sess.NewFlashErrorMessage(c.translator.GetLanguage(ctx.UserLanguage()).Get("There is already someone associated with this provider!"))
response.Redirect(w, r, route.Path(c.router, "settings"))
return
}
if err := c.store.UpdateExtraField(ctx.UserID(), profile.Key, profile.ID); err != nil {
html.ServerError(w, err)
return
}
sess.NewFlashMessage(c.translator.GetLanguage(ctx.UserLanguage()).Get("Your external account is now linked!"))
response.Redirect(w, r, route.Path(c.router, "settings"))
return
}
user, err := c.store.UserByExtraField(profile.Key, profile.ID)
if err != nil {
html.ServerError(w, err)
return
}
if user == nil {
if !c.cfg.IsOAuth2UserCreationAllowed() {
html.Forbidden(w)
return
}
user = model.NewUser()
user.Username = profile.Username
user.IsAdmin = false
user.Extra[profile.Key] = profile.ID
if err := c.store.CreateUser(user); err != nil {
html.ServerError(w, err)
return
}
}
sessionToken, _, err := c.store.CreateUserSession(user.Username, r.UserAgent(), request.RealIP(r))
if err != nil {
html.ServerError(w, err)
return
}
logger.Info("[Controller:OAuth2Callback] username=%s just logged in", user.Username)
c.store.SetLastLogin(user.ID)
sess.SetLanguage(user.Language)
sess.SetTheme(user.Theme)
http.SetCookie(w, cookie.New(
cookie.CookieUserSessionID,
sessionToken,
c.cfg.IsHTTPS,
c.cfg.BasePath(),
))
response.Redirect(w, r, route.Path(c.router, "unread"))
}