update database.go, go.mod, go.sum, google_oauth.go, Makefile, styles.css, telegram_oauth.go
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@@ -0,0 +1,115 @@
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package oauth
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import (
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"context"
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"encoding/json"
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"esauth/pkg/repository"
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"esauth/pkg/service"
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"esauth/pkg/util"
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"fmt"
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"net/http"
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"strings"
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"github.com/gin-gonic/gin"
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"golang.org/x/oauth2"
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)
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type GoogleOAuth struct {
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Service *service.Service
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Repo *repository.Repository
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GoogleOauthConfig *oauth2.Config
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}
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const GOOGLE_RANDOM_STATE = "xeiojqj433DS" // Строка состояния для защиты от CSRF
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// Обработка колбэка с авторизацией
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func (g GoogleOAuth) HandleGoogleCallback(c *gin.Context) {
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// Проверяем состояние (state) для защиты от CSRF атак
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if c.Query("state") != GOOGLE_RANDOM_STATE {
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util.NewErrorResponse(c, http.StatusInternalServerError, "Invalid OAuth state")
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return
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}
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// Получаем код авторизации от Google
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code := c.Query("code")
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if code == "" {
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util.NewErrorResponse(c, http.StatusInternalServerError, "Code not found")
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return
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}
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// Обмен кода авторизации на токен
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token, err := g.GoogleOauthConfig.Exchange(context.Background(), code)
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if err != nil {
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util.NewErrorResponse(c, http.StatusInternalServerError, "Failed to exchange token")
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return
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}
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// Получаем информацию о пользователе с помощью токена
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userInfo, err := getUserInfo(token.AccessToken)
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if err != nil {
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util.NewErrorResponse(c, http.StatusInternalServerError, "Failed to get user info")
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return
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}
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id, _ := userInfo["id"].(string)
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user, _ := g.Repo.FindUser("google_id = ?", id)
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usertoken := c.Query("usertoken")
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currentUserId, err := g.Service.ParseToken(usertoken)
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if err == nil {
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currentUser, _ := g.Repo.GetUser(currentUserId)
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if (user.Id != currentUser.Id) && (user.Id != 0) {
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util.NewErrorResponse(c, http.StatusInternalServerError, fmt.Sprintf("This account already conntected to user %d", user.Id))
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return
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}
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user = currentUser
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}
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if user.Username == "" {
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username, _ := userInfo["name"].(string)
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user.Username = strings.ReplaceAll(username, " ", "")
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}
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if user.FirstName == "" {
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user.FirstName, _ = userInfo["given_name"].(string)
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}
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if user.LastName == "" {
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user.LastName, _ = userInfo["family_name"].(string)
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}
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if user.PictureURL == "" {
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user.PictureURL, _ = userInfo["picture"].(string)
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}
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if user.Email == "" {
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user.Email, _ = userInfo["email"].(string)
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}
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user.GoogleId = id
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_, err = g.Service.CreateUser(&user)
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if err != nil {
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g.Service.SaveUser(&user)
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}
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tkn, err := g.Service.GenerateToken(user.Id)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.Redirect(http.StatusMovedPermanently, "/?token="+tkn)
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c.Abort()
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}
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// getUserInfo получает информацию о пользователе через Google API
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func getUserInfo(accessToken string) (map[string]interface{}, error) {
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resp, err := http.Get(fmt.Sprintf("https://www.googleapis.com/oauth2/v2/userinfo?access_token=%s", accessToken))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var userInfo map[string]interface{}
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if err := json.NewDecoder(resp.Body).Decode(&userInfo); err != nil {
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return nil, err
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}
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return userInfo, nil
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}
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