Files
tinyauth/internal/api/api.go
2025-01-24 15:29:46 +02:00

373 lines
8.0 KiB
Go

package api
import (
"fmt"
"io/fs"
"net/http"
"os"
"strings"
"time"
"tinyauth/internal/assets"
"tinyauth/internal/auth"
"tinyauth/internal/hooks"
"tinyauth/internal/providers"
"tinyauth/internal/types"
"tinyauth/internal/utils"
"github.com/gin-contrib/sessions"
"github.com/gin-contrib/sessions/cookie"
"github.com/gin-gonic/gin"
"github.com/google/go-querystring/query"
"github.com/rs/zerolog/log"
)
func NewAPI(config types.APIConfig, hooks *hooks.Hooks, auth *auth.Auth, providers *providers.Providers) *API {
return &API{
Config: config,
Hooks: hooks,
Auth: auth,
Providers: providers,
}
}
type API struct {
Config types.APIConfig
Router *gin.Engine
Hooks *hooks.Hooks
Auth *auth.Auth
Providers *providers.Providers
Domain string
}
func (api *API) Init() {
gin.SetMode(gin.ReleaseMode)
router := gin.New()
router.Use(zerolog())
dist, distErr := fs.Sub(assets.Assets, "dist")
if distErr != nil {
log.Fatal().Err(distErr).Msg("Failed to get UI assets")
os.Exit(1)
}
fileServer := http.FileServer(http.FS(dist))
store := cookie.NewStore([]byte(api.Config.Secret))
domain, domainErr := utils.GetRootURL(api.Config.AppURL)
log.Info().Str("domain", domain).Msg("Using domain for cookies")
if domainErr != nil {
log.Fatal().Err(domainErr).Msg("Failed to get domain")
os.Exit(1)
}
var isSecure bool
if api.Config.CookieSecure {
isSecure = true
} else {
isSecure = false
}
api.Domain = fmt.Sprintf(".%s", domain)
store.Options(sessions.Options{
Domain: api.Domain,
Path: "/",
HttpOnly: true,
Secure: isSecure,
})
router.Use(sessions.Sessions("tinyauth", store))
router.Use(func(c *gin.Context) {
if !strings.HasPrefix(c.Request.URL.Path, "/api") {
_, err := fs.Stat(dist, strings.TrimPrefix(c.Request.URL.Path, "/"))
if os.IsNotExist(err) {
c.Request.URL.Path = "/"
}
fileServer.ServeHTTP(c.Writer, c.Request)
c.Abort()
}
})
api.Router = router
}
func (api *API) SetupRoutes() {
api.Router.GET("/api/auth", func(c *gin.Context) {
userContext, userContextErr := api.Hooks.UseUserContext(c)
if userContextErr != nil {
c.JSON(500, gin.H{
"status": 500,
"message": "Internal Server Error",
})
return
}
if userContext.IsLoggedIn {
c.JSON(200, gin.H{
"status": 200,
"message": "Authenticated",
})
return
}
uri := c.Request.Header.Get("X-Forwarded-Uri")
proto := c.Request.Header.Get("X-Forwarded-Proto")
host := c.Request.Header.Get("X-Forwarded-Host")
queries, queryErr := query.Values(types.LoginQuery{
RedirectURI: fmt.Sprintf("%s://%s%s", proto, host, uri),
})
if queryErr != nil {
c.JSON(501, gin.H{
"status": 501,
"message": "Internal Server Error",
})
return
}
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/?%s", api.Config.AppURL, queries.Encode()))
})
api.Router.POST("/api/login", func(c *gin.Context) {
var login types.LoginRequest
err := c.BindJSON(&login)
if err != nil {
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
user := api.Auth.GetUser(login.Email)
if user == nil {
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
if !api.Auth.CheckPassword(*user, login.Password) {
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
session := sessions.Default(c)
session.Set("tinyauth_sid", fmt.Sprintf("email:%s", login.Email))
session.Save()
c.JSON(200, gin.H{
"status": 200,
"message": "Logged in",
})
})
api.Router.POST("/api/logout", func(c *gin.Context) {
session := sessions.Default(c)
session.Delete("tinyauth_sid")
session.Save()
c.SetCookie("tinyauth_redirect_uri", "", -1, "/", api.Domain, api.Config.CookieSecure, true)
c.JSON(200, gin.H{
"status": 200,
"message": "Logged out",
})
})
api.Router.GET("/api/status", func(c *gin.Context) {
userContext, userContextErr := api.Hooks.UseUserContext(c)
if userContextErr != nil {
c.JSON(500, gin.H{
"status": 500,
"message": "Internal Server Error",
})
return
}
if !userContext.IsLoggedIn {
c.JSON(200, gin.H{
"status": 200,
"message": "Unauthenticated",
"email": "",
"isLoggedIn": false,
"oauth": false,
"provider": "",
"configuredProviders": api.Providers.GetConfiguredProviders(),
})
return
}
c.JSON(200, gin.H{
"status": 200,
"message": "Authenticated",
"email": userContext.Email,
"isLoggedIn": userContext.IsLoggedIn,
"oauth": userContext.OAuth,
"provider": userContext.Provider,
"configuredProviders": api.Providers.GetConfiguredProviders(),
})
})
api.Router.GET("/api/healthcheck", func(c *gin.Context) {
c.JSON(200, gin.H{
"status": 200,
"message": "OK",
})
})
api.Router.GET("/api/oauth/url/:provider", func(c *gin.Context) {
var request types.OAuthRequest
bindErr := c.BindUri(&request)
if bindErr != nil {
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
provider := api.Providers.GetProvider(request.Provider)
if provider == nil {
c.JSON(404, gin.H{
"status": 404,
"message": "Not Found",
})
return
}
authURL := provider.GetAuthURL()
redirectURI := c.Query("redirect_uri")
if redirectURI != "" {
c.SetCookie("tinyauth_redirect_uri", redirectURI, 3600, "/", api.Domain, api.Config.CookieSecure, true)
}
c.JSON(200, gin.H{
"status": 200,
"message": "Ok",
"url": authURL,
})
})
api.Router.GET("/api/oauth/callback/:provider", func(c *gin.Context) {
var providerName types.OAuthRequest
bindErr := c.BindUri(&providerName)
if bindErr != nil {
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
code := c.Query("code")
if code == "" {
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
provider := api.Providers.GetProvider(providerName.Provider)
if provider == nil {
c.JSON(404, gin.H{
"status": 404,
"message": "Not Found",
})
return
}
token, tokenErr := provider.ExchangeToken(code)
if tokenErr != nil {
c.JSON(500, gin.H{
"status": 500,
"message": "Internal Server Error",
})
return
}
session := sessions.Default(c)
session.Set("tinyauth_sid", fmt.Sprintf("%s:%s", providerName.Provider, token))
session.Save()
redirectURI, redirectURIErr := c.Cookie("tinyauth_redirect_uri")
if redirectURIErr != nil {
c.JSON(200, gin.H{
"status": 200,
"message": "Logged in",
})
}
c.SetCookie("tinyauth_redirect_uri", "", -1, "/", api.Domain, api.Config.CookieSecure, true)
queries, queryErr := query.Values(types.LoginQuery{
RedirectURI: redirectURI,
})
if queryErr != nil {
c.JSON(501, gin.H{
"status": 501,
"message": "Internal Server Error",
})
return
}
c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/continue?%s", api.Config.AppURL, queries.Encode()))
})
}
func (api *API) Run() {
log.Info().Str("address", api.Config.Address).Int("port", api.Config.Port).Msg("Starting server")
api.Router.Run(fmt.Sprintf("%s:%d", api.Config.Address, api.Config.Port))
}
func zerolog() gin.HandlerFunc {
return func(c *gin.Context) {
tStart := time.Now()
c.Next()
code := c.Writer.Status()
address := c.Request.RemoteAddr
method := c.Request.Method
path := c.Request.URL.Path
latency := time.Since(tStart).String()
switch {
case code >= 200 && code < 300:
log.Info().Str("method", method).Str("path", path).Str("address", address).Int("status", code).Str("latency", latency).Msg("Request")
case code >= 300 && code < 400:
log.Warn().Str("method", method).Str("path", path).Str("address", address).Int("status", code).Str("latency", latency).Msg("Request")
case code >= 400:
log.Error().Str("method", method).Str("path", path).Str("address", address).Int("status", code).Str("latency", latency).Msg("Request")
}
}
}