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fix: support for parent trusted domain, fixes #1021

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This commit is contained in:
Stavros
2026-07-18 16:28:14 +03:00
parent a7eba59a42
commit 0fc87ad58f
5 changed files with 165 additions and 25 deletions
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internal/bootstrap/app_bootstrap.go
+9 -7
View File
@@ -88,17 +88,13 @@ func (app *BootstrapApp) Setup() error {
app.log.App.Info().Msgf("Starting Tinyauth version: %s", model.Version)
// get app url
if app.config.AppURL == "" {
return errors.New("app url cannot be empty, perhaps config loading failed")
}
appUrl, err := url.Parse(app.config.AppURL)
appURL, err := utils.SafeParseAppURL(app.config.AppURL)
if err != nil {
return fmt.Errorf("failed to parse app url: %w", err)
}
app.runtime.AppURL = strings.ToLower(appUrl.Scheme + "://" + appUrl.Host)
app.runtime.AppURL = appURL
// validate session config
if app.config.Auth.SessionMaxLifetime != 0 && app.config.Auth.SessionMaxLifetime < app.config.Auth.SessionExpiry {
@@ -172,7 +168,13 @@ func (app *BootstrapApp) Setup() error {
app.runtime.CookieDomain = cookieDomain
// cookie names
app.runtime.UUID = utils.GenerateUUID(appUrl.Hostname())
u, err := url.Parse(app.runtime.AppURL)
if err != nil {
return fmt.Errorf("failed to parse app url: %w", err)
}
app.runtime.UUID = utils.GenerateUUID(u.Hostname())
cookieId := strings.Split(app.runtime.UUID, "-")[0] // first 8 characters of the uuid should be good enough
internal/controller/oauth_controller.go
+2 -1
View File
@@ -351,7 +351,8 @@ func (controller *OAuthController) isRedirectSafe(redirectURI string) bool {
return false
}
if strings.HasSuffix(hostname, "."+strings.ToLower(controller.runtime.CookieDomain)) {
if strings.HasSuffix(hostname, "."+strings.ToLower(controller.runtime.CookieDomain)) ||
hostname == controller.runtime.CookieDomain {
return true
}
internal/utils/app_utils.go
+46 -5
View File
@@ -7,10 +7,55 @@ import (
"strings"
"github.com/weppos/publicsuffix-go/publicsuffix"
"golang.org/x/net/idna"
)
// GetCookieDomain parses the app url and returns the domain value to use for cookies.
var (
ErrEmptyURL = fmt.Errorf("invalid url")
)
func SafeParseAppURL(str string) (string, error) {
if strings.TrimSpace(str) == "" {
return "", ErrEmptyURL
}
u, err := url.Parse(str)
if err != nil {
return "", fmt.Errorf("invalid url: %w", err)
}
if u.Host == "" ||
u.Scheme != "http" &&
u.Scheme != "https" {
return "", fmt.Errorf("invalid url, must be in format https(s)://host")
}
hostname := strings.ToLower(u.Hostname())
hostname = strings.TrimSuffix(hostname, ".")
if netIP := net.ParseIP(hostname); netIP != nil {
return "", fmt.Errorf("ip addresses not allowed")
}
hostname, err = idna.Lookup.ToASCII(hostname)
if err != nil {
return "", fmt.Errorf("failed to convert hostname to ascii: %w", err)
}
appURL := fmt.Sprintf("%s://%s", u.Scheme, hostname)
if u.Port() != "" {
appURL += ":" + u.Port()
}
return appURL, nil
}
// GetCookieDomain parses the app URL and returns the domain value to use for cookies.
// When auth for subdomains is enabled, it strips the leftmost label
// GetCookieDomain assumes the app URL is first parsed with SafeParseAppURL
// (e.g. sub1.sub2.domain.com -> sub2.domain.com), otherwise it returns the full hostname.
func GetCookieDomain(appUrl string, subdomainsEnabled bool) (string, error) {
u, err := url.Parse(appUrl)
@@ -21,10 +66,6 @@ func GetCookieDomain(appUrl string, subdomainsEnabled bool) (string, error) {
hostname := strings.ToLower(u.Hostname())
if netIP := net.ParseIP(hostname); netIP != nil {
return "", fmt.Errorf("ip addresses not allowed")
}
parts := strings.Split(hostname, ".")
if len(parts) < 2 {
internal/utils/app_utils_test.go
+85 -6
View File
@@ -7,7 +7,86 @@ import (
"github.com/tinyauthapp/tinyauth/internal/utils"
)
func TestGetRootDomain(t *testing.T) {
func TestSafeParseAPPURL(t *testing.T) {
// Normal app url
appURL := "http://sub.tinyauth.app"
expected := "http://sub.tinyauth.app"
result, err := utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Strip path
appURL = "http://sub.tinyauth.app/path"
expected = "http://sub.tinyauth.app"
result, err = utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Preserve port
appURL = "http://sub.tinyauth.app:8080"
expected = "http://sub.tinyauth.app:8080"
result, err = utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Remove trailing dot
appURL = "http://sub.tinyauth.app."
expected = "http://sub.tinyauth.app"
result, err = utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Convert to ascii
appURL = "http://bücher.example.com"
expected = "http://xn--bcher-kva.example.com"
result, err = utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Lowercase
appURL = "HTTP://SUb.tinyAUth.aPP"
expected = "http://sub.tinyauth.app"
result, err = utils.SafeParseAppURL(appURL)
assert.NoError(t, err)
assert.Equal(t, expected, result)
// Empty string
appURL = ""
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorIs(t, err, utils.ErrEmptyURL)
// Invalid URL
appURL = "invalidurl"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "invalid url")
// Non http or https URL
appURL = "ftp://sub.tinyauth.app"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "invalid url")
// Invalid punycode
appURL = "http://ab--cd.example.com"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "failed to convert hostname to ascii")
// IP address
appURL = "http://10.10.10.10"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "ip addresses not allowed")
// IPv6 address
appURL = "http://[::1]:8080"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "ip addresses not allowed")
// Invalid URL
appURL = "://"
_, err = utils.SafeParseAppURL(appURL)
assert.ErrorContains(t, err, "invalid url")
}
func TestGetCookieDomain(t *testing.T) {
// Normal case
domain := "http://sub.tinyauth.app"
expected := "tinyauth.app"
@@ -27,11 +106,6 @@ func TestGetRootDomain(t *testing.T) {
_, err = utils.GetCookieDomain(domain, true)
assert.EqualError(t, err, "invalid app url, must be in format subdomain.domain.tld or domain.tld")
// IP address
domain = "http://10.10.10.10"
_, err = utils.GetCookieDomain(domain, true)
assert.ErrorContains(t, err, "ip addresses not allowed")
// Invalid URL
domain = "http://[::1]:namedport"
_, err = utils.GetCookieDomain(domain, true)
@@ -56,6 +130,11 @@ func TestGetRootDomain(t *testing.T) {
_, err = utils.GetCookieDomain(domain, true)
assert.ErrorContains(t, err, "domain in public suffix list, cannot set cookies")
// Domain managed by ICANN without subdomain
domain = "http://co.uk"
_, err = utils.GetCookieDomain(domain, true)
assert.ErrorContains(t, err, "domain in public suffix list, cannot set cookies")
// Domain without subdomain
domain = "http://tinyauth.app"
expected = "tinyauth.app"