/
response.go
149 lines (120 loc) · 4.41 KB
/
response.go
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package handlers
import (
"fmt"
"net/url"
"github.com/valyala/fasthttp"
"github.com/authelia/authelia/v4/internal/authorization"
"github.com/authelia/authelia/v4/internal/middlewares"
"github.com/authelia/authelia/v4/internal/utils"
)
// handleOIDCWorkflowResponse handle the redirection upon authentication in the OIDC workflow.
func handleOIDCWorkflowResponse(ctx *middlewares.AutheliaCtx) {
userSession := ctx.GetSession()
if !authorization.IsAuthLevelSufficient(userSession.AuthenticationLevel, userSession.OIDCWorkflowSession.RequiredAuthorizationLevel) {
ctx.Logger.Warn("OIDC requires 2FA, cannot be redirected yet")
ctx.ReplyOK()
return
}
uri, err := ctx.ExternalRootURL()
if err != nil {
ctx.Logger.Errorf("%v", err)
handleAuthenticationUnauthorized(ctx, fmt.Errorf("Unable to get forward facing URI"), messageAuthenticationFailed)
return
}
if isConsentMissing(
userSession.OIDCWorkflowSession,
userSession.OIDCWorkflowSession.RequestedScopes,
userSession.OIDCWorkflowSession.RequestedAudience) {
err := ctx.SetJSONBody(redirectResponse{Redirect: fmt.Sprintf("%s/consent", uri)})
if err != nil {
ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
}
} else {
err := ctx.SetJSONBody(redirectResponse{Redirect: userSession.OIDCWorkflowSession.AuthURI})
if err != nil {
ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
}
}
}
// Handle1FAResponse handle the redirection upon 1FA authentication.
func Handle1FAResponse(ctx *middlewares.AutheliaCtx, targetURI, requestMethod string, username string, groups []string) {
if targetURI == "" {
if !ctx.Providers.Authorizer.IsSecondFactorEnabled() && ctx.Configuration.DefaultRedirectionURL != "" {
err := ctx.SetJSONBody(redirectResponse{Redirect: ctx.Configuration.DefaultRedirectionURL})
if err != nil {
ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
}
} else {
ctx.ReplyOK()
}
return
}
targetURL, err := url.ParseRequestURI(targetURI)
if err != nil {
ctx.Error(fmt.Errorf("Unable to parse target URL %s: %s", targetURI, err), messageAuthenticationFailed)
return
}
requiredLevel := ctx.Providers.Authorizer.GetRequiredLevel(
authorization.Subject{
Username: username,
Groups: groups,
IP: ctx.RemoteIP(),
},
authorization.NewObject(targetURL, requestMethod))
ctx.Logger.Debugf("Required level for the URL %s is %d", targetURI, requiredLevel)
if requiredLevel == authorization.TwoFactor {
ctx.Logger.Warnf("%s requires 2FA, cannot be redirected yet", targetURI)
ctx.ReplyOK()
return
}
safeRedirection := utils.IsRedirectionSafe(*targetURL, ctx.Configuration.Session.Domain)
if !safeRedirection {
if !ctx.Providers.Authorizer.IsSecondFactorEnabled() && ctx.Configuration.DefaultRedirectionURL != "" {
err := ctx.SetJSONBody(redirectResponse{Redirect: ctx.Configuration.DefaultRedirectionURL})
if err != nil {
ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
}
} else {
ctx.ReplyOK()
}
return
}
ctx.Logger.Debugf("Redirection URL %s is safe", targetURI)
err = ctx.SetJSONBody(redirectResponse{Redirect: targetURI})
if err != nil {
ctx.Logger.Errorf("Unable to set redirection URL in body: %s", err)
}
}
// Handle2FAResponse handle the redirection upon 2FA authentication.
func Handle2FAResponse(ctx *middlewares.AutheliaCtx, targetURI string) {
if targetURI == "" {
if ctx.Configuration.DefaultRedirectionURL != "" {
err := ctx.SetJSONBody(redirectResponse{Redirect: ctx.Configuration.DefaultRedirectionURL})
if err != nil {
ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
}
} else {
ctx.ReplyOK()
}
return
}
safe, err := utils.IsRedirectionURISafe(targetURI, ctx.Configuration.Session.Domain)
if err != nil {
ctx.Error(fmt.Errorf("Unable to check target URL: %s", err), messageMFAValidationFailed)
return
}
if safe {
ctx.Logger.Debugf("Redirection URL %s is safe", targetURI)
err := ctx.SetJSONBody(redirectResponse{Redirect: targetURI})
if err != nil {
ctx.Logger.Errorf("Unable to set redirection URL in body: %s", err)
}
} else {
ctx.ReplyOK()
}
}
// handleAuthenticationUnauthorized provides harmonized response codes for 1FA.
func handleAuthenticationUnauthorized(ctx *middlewares.AutheliaCtx, err error, message string) {
ctx.SetStatusCode(fasthttp.StatusUnauthorized)
ctx.Error(err, message)
}