Files
tinyauth/internal/handlers/handlers.go

822 lines
21 KiB
Go

package handlers
import (
"fmt"
"net/http"
"strings"
"time"
"tinyauth/internal/auth"
"tinyauth/internal/docker"
"tinyauth/internal/hooks"
"tinyauth/internal/providers"
"tinyauth/internal/types"
"tinyauth/internal/utils"
"github.com/gin-gonic/gin"
"github.com/google/go-querystring/query"
"github.com/pquerna/otp/totp"
"github.com/rs/zerolog/log"
)
type Handlers struct {
Config types.HandlersConfig
Auth *auth.Auth
Hooks *hooks.Hooks
Providers *providers.Providers
Docker *docker.Docker
}
func NewHandlers(config types.HandlersConfig, auth *auth.Auth, hooks *hooks.Hooks, providers *providers.Providers, docker *docker.Docker) *Handlers {
return &Handlers{
Config: config,
Auth: auth,
Hooks: hooks,
Providers: providers,
Docker: docker,
}
}
func (h *Handlers) AuthHandler(c *gin.Context) {
// Create struct for proxy
var proxy types.Proxy
// Bind URI
err := c.BindUri(&proxy)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to bind URI")
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
// Check if the request is coming from a browser (tools like curl/bruno use */* and they don't include the text/html)
isBrowser := strings.Contains(c.Request.Header.Get("Accept"), "text/html")
if isBrowser {
log.Debug().Msg("Request is most likely coming from a browser")
} else {
log.Debug().Msg("Request is most likely not coming from a browser")
}
log.Debug().Interface("proxy", proxy.Proxy).Msg("Got proxy")
// Get headers
uri := c.Request.Header.Get("X-Forwarded-Uri")
proto := c.Request.Header.Get("X-Forwarded-Proto")
host := c.Request.Header.Get("X-Forwarded-Host")
// Remove the port from the host if it exists
hostPortless := strings.Split(host, ":")[0] // *lol*
// Get the id
id := strings.Split(hostPortless, ".")[0]
// Get the container labels
labels, err := h.Docker.GetLabels(id, hostPortless)
log.Debug().Interface("labels", labels).Msg("Got labels")
// Check if there was an error
if err != nil {
log.Error().Err(err).Msg("Failed to get container labels")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(500, gin.H{
"status": 500,
"message": "Internal Server Error",
})
return
}
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Check if the IP is allowed/blocked
ip := c.ClientIP()
if !h.Auth.CheckIP(c, labels) {
log.Warn().Str("ip", ip).Msg("IP not allowed")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(403, gin.H{
"status": 403,
"message": "Forbidden",
})
return
}
values := types.UnauthorizedQuery{
Resource: strings.Split(host, ".")[0],
IP: ip,
}
// Build query
queries, err := query.Values(values)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, queries.Encode()))
return
}
// Check if auth is enabled
authEnabled, err := h.Auth.AuthEnabled(c, labels)
// Check if there was an error
if err != nil {
log.Error().Err(err).Msg("Failed to check if app is allowed")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(500, gin.H{
"status": 500,
"message": "Internal Server Error",
})
return
}
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// If auth is not enabled, return 200
if !authEnabled {
headersParsed := utils.ParseHeaders(labels.Headers)
for key, value := range headersParsed {
log.Debug().Str("key", key).Msg("Setting header")
c.Header(key, value)
}
if labels.Basic.Username != "" && labels.Basic.Password != "" {
log.Debug().Str("username", labels.Basic.Username).Msg("Setting basic auth headers")
c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Basic.Username, labels.Basic.Password)))
}
c.JSON(200, gin.H{
"status": 200,
"message": "Authenticated",
})
return
}
// Get user context
userContext := h.Hooks.UseUserContext(c)
// If we are using basic auth, we need to check if the user has totp and if it does then disable basic auth
if userContext.Provider == "basic" && userContext.TotpEnabled {
log.Warn().Str("username", userContext.Username).Msg("User has totp enabled, disabling basic auth")
userContext.IsLoggedIn = false
}
// Check if user is logged in
if userContext.IsLoggedIn {
log.Debug().Msg("Authenticated")
// Check if user is allowed to access subdomain, if request is nginx.example.com the subdomain (resource) is nginx
appAllowed := h.Auth.ResourceAllowed(c, userContext, labels)
log.Debug().Bool("appAllowed", appAllowed).Msg("Checking if app is allowed")
// The user is not allowed to access the app
if !appAllowed {
log.Warn().Str("username", userContext.Username).Str("host", host).Msg("User not allowed")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
// Values
values := types.UnauthorizedQuery{
Resource: strings.Split(host, ".")[0],
}
// Use either username or email
if userContext.OAuth {
values.Username = userContext.Email
} else {
values.Username = userContext.Username
}
// Build query
queries, err := query.Values(values)
// Handle error (no need to check for nginx/headers since we are sure we are using caddy/traefik)
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// We are using caddy/traefik so redirect
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, queries.Encode()))
return
}
// Check groups if using OAuth
if userContext.OAuth {
// Check if user is in required groups
groupOk := h.Auth.OAuthGroup(c, userContext, labels)
log.Debug().Bool("groupOk", groupOk).Msg("Checking if user is in required groups")
// The user is not allowed to access the app
if !groupOk {
log.Warn().Str("username", userContext.Username).Str("host", host).Msg("User is not in required groups")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
// Values
values := types.UnauthorizedQuery{
Resource: strings.Split(host, ".")[0],
GroupErr: true,
}
// Use either username or email
if userContext.OAuth {
values.Username = userContext.Email
} else {
values.Username = userContext.Username
}
// Build query
queries, err := query.Values(values)
// Handle error (no need to check for nginx/headers since we are sure we are using caddy/traefik)
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// We are using caddy/traefik so redirect
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, queries.Encode()))
return
}
}
c.Header("Remote-User", utils.SanitizeHeader(userContext.Username))
c.Header("Remote-Name", utils.SanitizeHeader(userContext.Name))
c.Header("Remote-Email", utils.SanitizeHeader(userContext.Email))
c.Header("Remote-Groups", utils.SanitizeHeader(userContext.OAuthGroups))
// Set the rest of the headers
parsedHeaders := utils.ParseHeaders(labels.Headers)
for key, value := range parsedHeaders {
log.Debug().Str("key", key).Msg("Setting header")
c.Header(key, value)
}
// Set basic auth headers if configured
if labels.Basic.Username != "" && labels.Basic.Password != "" {
log.Debug().Str("username", labels.Basic.Username).Msg("Setting basic auth headers")
c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Basic.Username, labels.Basic.Password)))
}
// The user is allowed to access the app
c.JSON(200, gin.H{
"status": 200,
"message": "Authenticated",
})
return
}
// The user is not logged in
log.Debug().Msg("Unauthorized")
if proxy.Proxy == "nginx" || !isBrowser {
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
queries, err := query.Values(types.LoginQuery{
RedirectURI: fmt.Sprintf("%s://%s%s", proto, host, uri),
})
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
log.Debug().Interface("redirect_uri", fmt.Sprintf("%s://%s%s", proto, host, uri)).Msg("Redirecting to login")
// Redirect to login
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/login?%s", h.Config.AppURL, queries.Encode()))
}
func (h *Handlers) LoginHandler(c *gin.Context) {
// Create login struct
var login types.LoginRequest
// Bind JSON
err := c.BindJSON(&login)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to bind JSON")
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
log.Debug().Msg("Got login request")
// Get client IP for rate limiting
clientIP := c.ClientIP()
// Create an identifier for rate limiting (username or IP if username doesn't exist yet)
rateIdentifier := login.Username
if rateIdentifier == "" {
rateIdentifier = clientIP
}
// Check if the account is locked due to too many failed attempts
locked, remainingTime := h.Auth.IsAccountLocked(rateIdentifier)
if locked {
log.Warn().Str("identifier", rateIdentifier).Int("remaining_seconds", remainingTime).Msg("Account is locked due to too many failed login attempts")
c.JSON(429, gin.H{
"status": 429,
"message": fmt.Sprintf("Too many failed login attempts. Try again in %d seconds", remainingTime),
})
return
}
// Search for a user based on username
userSearch := h.Auth.SearchUser(login.Username)
log.Debug().Interface("userSearch", userSearch).Msg("Searching for user")
// User does not exist
if userSearch.Type == "" {
log.Debug().Str("username", login.Username).Msg("User not found")
// Record failed login attempt
h.Auth.RecordLoginAttempt(rateIdentifier, false)
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
log.Debug().Msg("Got user")
// Check if password is correct
if !h.Auth.VerifyUser(userSearch, login.Password) {
log.Debug().Str("username", login.Username).Msg("Password incorrect")
// Record failed login attempt
h.Auth.RecordLoginAttempt(rateIdentifier, false)
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
log.Debug().Msg("Password correct, checking totp")
// Record successful login attempt (will reset failed attempt counter)
h.Auth.RecordLoginAttempt(rateIdentifier, true)
// Check if user is using TOTP
if userSearch.Type == "local" {
// Get local user
localUser := h.Auth.GetLocalUser(login.Username)
// Check if TOTP is enabled
if localUser.TotpSecret != "" {
log.Debug().Msg("Totp enabled")
// Set totp pending cookie
h.Auth.CreateSessionCookie(c, &types.SessionCookie{
Username: login.Username,
Name: utils.Capitalize(login.Username),
Email: fmt.Sprintf("%s@%s", strings.ToLower(login.Username), h.Config.Domain),
Provider: "username",
TotpPending: true,
})
// Return totp required
c.JSON(200, gin.H{
"status": 200,
"message": "Waiting for totp",
"totpPending": true,
})
// Stop further processing
return
}
}
// Create session cookie with username as provider
h.Auth.CreateSessionCookie(c, &types.SessionCookie{
Username: login.Username,
Name: utils.Capitalize(login.Username),
Email: fmt.Sprintf("%s@%s", strings.ToLower(login.Username), h.Config.Domain),
Provider: "username",
})
// Return logged in
c.JSON(200, gin.H{
"status": 200,
"message": "Logged in",
"totpPending": false,
})
}
func (h *Handlers) TotpHandler(c *gin.Context) {
// Create totp struct
var totpReq types.TotpRequest
// Bind JSON
err := c.BindJSON(&totpReq)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to bind JSON")
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
log.Debug().Msg("Checking totp")
// Get user context
userContext := h.Hooks.UseUserContext(c)
// Check if we have a user
if userContext.Username == "" {
log.Debug().Msg("No user context")
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
// Get user
user := h.Auth.GetLocalUser(userContext.Username)
// Check if totp is correct
ok := totp.Validate(totpReq.Code, user.TotpSecret)
// TOTP is incorrect
if !ok {
log.Debug().Msg("Totp incorrect")
c.JSON(401, gin.H{
"status": 401,
"message": "Unauthorized",
})
return
}
log.Debug().Msg("Totp correct")
// Create session cookie with username as provider
h.Auth.CreateSessionCookie(c, &types.SessionCookie{
Username: user.Username,
Name: utils.Capitalize(user.Username),
Email: fmt.Sprintf("%s@%s", strings.ToLower(user.Username), h.Config.Domain),
Provider: "username",
})
// Return logged in
c.JSON(200, gin.H{
"status": 200,
"message": "Logged in",
})
}
func (h *Handlers) LogoutHandler(c *gin.Context) {
log.Debug().Msg("Logging out")
// Delete session cookie
h.Auth.DeleteSessionCookie(c)
log.Debug().Msg("Cleaning up redirect cookie")
// Return logged out
c.JSON(200, gin.H{
"status": 200,
"message": "Logged out",
})
}
func (h *Handlers) AppHandler(c *gin.Context) {
log.Debug().Msg("Getting app context")
// Get configured providers
configuredProviders := h.Providers.GetConfiguredProviders()
// We have username/password configured so add it to our providers
if h.Auth.UserAuthConfigured() {
configuredProviders = append(configuredProviders, "username")
}
// Create app context struct
appContext := types.AppContext{
Status: 200,
Message: "OK",
ConfiguredProviders: configuredProviders,
DisableContinue: h.Config.DisableContinue,
Title: h.Config.Title,
GenericName: h.Config.GenericName,
Domain: h.Config.Domain,
ForgotPasswordMessage: h.Config.ForgotPasswordMessage,
BackgroundImage: h.Config.BackgroundImage,
OAuthAutoRedirect: h.Config.OAuthAutoRedirect,
}
// Return app context
c.JSON(200, appContext)
}
func (h *Handlers) UserHandler(c *gin.Context) {
log.Debug().Msg("Getting user context")
// Get user context
userContext := h.Hooks.UseUserContext(c)
// Create user context response
userContextResponse := types.UserContextResponse{
Status: 200,
IsLoggedIn: userContext.IsLoggedIn,
Username: userContext.Username,
Name: userContext.Name,
Email: userContext.Email,
Provider: userContext.Provider,
Oauth: userContext.OAuth,
TotpPending: userContext.TotpPending,
}
// If we are not logged in we set the status to 401 else we set it to 200
if !userContext.IsLoggedIn {
log.Debug().Msg("Unauthorized")
userContextResponse.Message = "Unauthorized"
} else {
log.Debug().Interface("userContext", userContext).Msg("Authenticated")
userContextResponse.Message = "Authenticated"
}
// Return user context
c.JSON(200, userContextResponse)
}
func (h *Handlers) OauthUrlHandler(c *gin.Context) {
// Create struct for OAuth request
var request types.OAuthRequest
// Bind URI
err := c.BindUri(&request)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to bind URI")
c.JSON(400, gin.H{
"status": 400,
"message": "Bad Request",
})
return
}
log.Debug().Msg("Got OAuth request")
// Check if provider exists
provider := h.Providers.GetProvider(request.Provider)
// Provider does not exist
if provider == nil {
c.JSON(404, gin.H{
"status": 404,
"message": "Not Found",
})
return
}
log.Debug().Str("provider", request.Provider).Msg("Got provider")
// Create state
state := provider.GenerateState()
// Get auth URL
authURL := provider.GetAuthURL(state)
log.Debug().Msg("Got auth URL")
// Set CSRF cookie
c.SetCookie(h.Config.CsrfCookieName, state, int(time.Hour.Seconds()), "/", "", h.Config.CookieSecure, true)
// Get redirect URI
redirectURI := c.Query("redirect_uri")
// Set redirect cookie if redirect URI is provided
if redirectURI != "" {
log.Debug().Str("redirectURI", redirectURI).Msg("Setting redirect cookie")
c.SetCookie(h.Config.RedirectCookieName, redirectURI, int(time.Hour.Seconds()), "/", "", h.Config.CookieSecure, true)
}
// Return auth URL
c.JSON(200, gin.H{
"status": 200,
"message": "OK",
"url": authURL,
})
}
func (h *Handlers) OauthCallbackHandler(c *gin.Context) {
// Create struct for OAuth request
var providerName types.OAuthRequest
// Bind URI
err := c.BindUri(&providerName)
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to bind URI")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
log.Debug().Interface("provider", providerName.Provider).Msg("Got provider name")
// Get state
state := c.Query("state")
// Get CSRF cookie
csrfCookie, err := c.Cookie(h.Config.CsrfCookieName)
if err != nil {
log.Debug().Msg("No CSRF cookie")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
log.Debug().Str("csrfCookie", csrfCookie).Msg("Got CSRF cookie")
// Check if CSRF cookie is valid
if csrfCookie != state {
log.Warn().Msg("Invalid CSRF cookie or CSRF cookie does not match with the state")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Clean up CSRF cookie
c.SetCookie(h.Config.CsrfCookieName, "", -1, "/", "", h.Config.CookieSecure, true)
// Get code
code := c.Query("code")
log.Debug().Msg("Got code")
// Get provider
provider := h.Providers.GetProvider(providerName.Provider)
log.Debug().Str("provider", providerName.Provider).Msg("Got provider")
// Provider does not exist
if provider == nil {
c.Redirect(http.StatusTemporaryRedirect, "/not-found")
return
}
// Exchange token (authenticates user)
_, err = provider.ExchangeToken(code)
log.Debug().Msg("Got token")
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to exchange token")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Get user
user, err := h.Providers.GetUser(providerName.Provider)
// Handle error
if err != nil {
log.Error().Msg("Failed to get user")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
log.Debug().Msg("Got user")
// Check that email is not empty
if user.Email == "" {
log.Error().Msg("Email is empty")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Email is not whitelisted
if !h.Auth.EmailWhitelisted(user.Email) {
log.Warn().Str("email", user.Email).Msg("Email not whitelisted")
// Build query
queries, err := query.Values(types.UnauthorizedQuery{
Username: user.Email,
})
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Redirect to unauthorized
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, queries.Encode()))
}
log.Debug().Msg("Email whitelisted")
// Get username
var username string
if user.PreferredUsername != "" {
username = user.PreferredUsername
} else {
username = fmt.Sprintf("%s_%s", strings.Split(user.Email, "@")[0], strings.Split(user.Email, "@")[1])
}
// Get name
var name string
if user.Name != "" {
name = user.Name
} else {
name = fmt.Sprintf("%s (%s)", utils.Capitalize(strings.Split(user.Email, "@")[0]), strings.Split(user.Email, "@")[1])
}
// Create session cookie (also cleans up redirect cookie)
h.Auth.CreateSessionCookie(c, &types.SessionCookie{
Username: username,
Name: name,
Email: user.Email,
Provider: providerName.Provider,
OAuthGroups: strings.Join(user.Groups, ","),
})
// Check if we have a redirect URI
redirectCookie, err := c.Cookie(h.Config.RedirectCookieName)
if err != nil {
log.Debug().Msg("No redirect cookie")
c.Redirect(http.StatusTemporaryRedirect, h.Config.AppURL)
return
}
log.Debug().Str("redirectURI", redirectCookie).Msg("Got redirect URI")
// Build query
queries, err := query.Values(types.LoginQuery{
RedirectURI: redirectCookie,
})
log.Debug().Msg("Got redirect query")
// Handle error
if err != nil {
log.Error().Err(err).Msg("Failed to build queries")
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
return
}
// Clean up redirect cookie
c.SetCookie(h.Config.RedirectCookieName, "", -1, "/", "", h.Config.CookieSecure, true)
// Redirect to continue with the redirect URI
c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/continue?%s", h.Config.AppURL, queries.Encode()))
}
func (h *Handlers) HealthcheckHandler(c *gin.Context) {
c.JSON(200, gin.H{
"status": 200,
"message": "OK",
})
}