mirror of https://github.com/authelia/authelia.git
301 lines
9.3 KiB
Go
301 lines
9.3 KiB
Go
package handlers
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import (
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"fmt"
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"net/url"
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"path"
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"time"
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"github.com/google/uuid"
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"github.com/valyala/fasthttp"
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"github.com/authelia/authelia/v4/internal/authorization"
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"github.com/authelia/authelia/v4/internal/middlewares"
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"github.com/authelia/authelia/v4/internal/model"
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"github.com/authelia/authelia/v4/internal/oidc"
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"github.com/authelia/authelia/v4/internal/session"
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)
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// Handle1FAResponse handle the redirection upon 1FA authentication.
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func Handle1FAResponse(ctx *middlewares.AutheliaCtx, targetURI, requestMethod string, username string, groups []string) {
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var err error
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if len(targetURI) == 0 {
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defaultRedirectionURL := ctx.GetDefaultRedirectionURL()
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if !ctx.Providers.Authorizer.IsSecondFactorEnabled() && defaultRedirectionURL != nil {
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if err = ctx.SetJSONBody(redirectResponse{Redirect: defaultRedirectionURL.String()}); err != nil {
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ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
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}
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} else {
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ctx.ReplyOK()
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}
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return
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}
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var targetURL *url.URL
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if targetURL, err = url.ParseRequestURI(targetURI); err != nil {
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ctx.Error(fmt.Errorf("unable to parse target URL %s: %w", targetURI, err), messageAuthenticationFailed)
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return
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}
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_, requiredLevel := ctx.Providers.Authorizer.GetRequiredLevel(
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authorization.Subject{
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Username: username,
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Groups: groups,
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IP: ctx.RemoteIP(),
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},
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authorization.NewObject(targetURL, requestMethod))
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ctx.Logger.Debugf("Required level for the URL %s is %s", targetURI, requiredLevel)
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if requiredLevel == authorization.TwoFactor {
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ctx.Logger.Warnf("%s requires 2FA, cannot be redirected yet", targetURI)
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ctx.ReplyOK()
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return
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}
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if !ctx.IsSafeRedirectionTargetURI(targetURL) {
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ctx.Logger.Debugf("Redirection URL %s is not safe", targetURI)
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defaultRedirectionURL := ctx.GetDefaultRedirectionURL()
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if !ctx.Providers.Authorizer.IsSecondFactorEnabled() && defaultRedirectionURL != nil {
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if err = ctx.SetJSONBody(redirectResponse{Redirect: defaultRedirectionURL.String()}); err != nil {
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ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
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}
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return
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}
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ctx.ReplyOK()
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return
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}
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ctx.Logger.Debugf("Redirection URL %s is safe", targetURI)
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if err = ctx.SetJSONBody(redirectResponse{Redirect: targetURI}); err != nil {
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ctx.Logger.Errorf("Unable to set redirection URL in body: %s", err)
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}
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}
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// Handle2FAResponse handle the redirection upon 2FA authentication.
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func Handle2FAResponse(ctx *middlewares.AutheliaCtx, targetURI string) {
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var err error
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if len(targetURI) == 0 {
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defaultRedirectionURL := ctx.GetDefaultRedirectionURL()
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if defaultRedirectionURL == nil {
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ctx.ReplyOK()
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return
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}
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if err = ctx.SetJSONBody(redirectResponse{Redirect: defaultRedirectionURL.String()}); err != nil {
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ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
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}
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return
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}
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var (
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parsedURI *url.URL
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safe bool
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)
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if parsedURI, err = url.ParseRequestURI(targetURI); err != nil {
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ctx.Error(fmt.Errorf("unable to determine if URI '%s' is safe to redirect to: failed to parse URI '%s': %w", targetURI, targetURI, err), messageMFAValidationFailed)
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return
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}
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safe = ctx.IsSafeRedirectionTargetURI(parsedURI)
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if safe {
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ctx.Logger.Debugf("Redirection URL %s is safe", targetURI)
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if err = ctx.SetJSONBody(redirectResponse{Redirect: targetURI}); err != nil {
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ctx.Logger.Errorf("Unable to set redirection URL in body: %s", err)
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}
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return
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}
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ctx.ReplyOK()
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}
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// handleOIDCWorkflowResponse handle the redirection upon authentication in the OIDC workflow.
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func handleOIDCWorkflowResponse(ctx *middlewares.AutheliaCtx, userSession *session.UserSession, targetURI, workflowID string) {
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switch {
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case len(workflowID) != 0:
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handleOIDCWorkflowResponseWithID(ctx, userSession, workflowID)
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case len(targetURI) != 0:
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handleOIDCWorkflowResponseWithTargetURL(ctx, userSession, targetURI)
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default:
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ctx.Error(fmt.Errorf("invalid post data: must contain either a target url or a workflow id"), messageAuthenticationFailed)
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}
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}
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func handleOIDCWorkflowResponseWithTargetURL(ctx *middlewares.AutheliaCtx, userSession *session.UserSession, targetURI string) {
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var (
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issuerURL *url.URL
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targetURL *url.URL
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err error
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)
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if targetURL, err = url.ParseRequestURI(targetURI); err != nil {
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ctx.Error(fmt.Errorf("unable to parse target URL '%s': %w", targetURI, err), messageAuthenticationFailed)
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return
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}
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issuerURL = ctx.RootURL()
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if targetURL.Host != issuerURL.Host {
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ctx.Error(fmt.Errorf("unable to redirect to '%s': target host '%s' does not match expected issuer host '%s'", targetURL, targetURL.Host, issuerURL.Host), messageAuthenticationFailed)
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return
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}
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if userSession.IsAnonymous() {
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ctx.Error(fmt.Errorf("unable to redirect to '%s': user is anonymous", targetURL), messageAuthenticationFailed)
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return
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}
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if err = ctx.SetJSONBody(redirectResponse{Redirect: targetURL.String()}); err != nil {
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ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
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}
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}
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func handleOIDCWorkflowResponseWithID(ctx *middlewares.AutheliaCtx, userSession *session.UserSession, id string) {
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var (
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workflowID uuid.UUID
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client oidc.Client
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consent *model.OAuth2ConsentSession
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err error
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)
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if workflowID, err = uuid.Parse(id); err != nil {
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ctx.Error(fmt.Errorf("unable to parse consent session challenge id '%s': %w", id, err), messageAuthenticationFailed)
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return
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}
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if consent, err = ctx.Providers.StorageProvider.LoadOAuth2ConsentSessionByChallengeID(ctx, workflowID); err != nil {
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ctx.Error(fmt.Errorf("unable to load consent session by challenge id '%s': %w", id, err), messageAuthenticationFailed)
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return
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}
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if consent.Responded() {
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ctx.Error(fmt.Errorf("consent has already been responded to '%s': %w", id, err), messageAuthenticationFailed)
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return
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}
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if client, err = ctx.Providers.OpenIDConnect.GetRegisteredClient(ctx, consent.ClientID); err != nil {
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ctx.Error(fmt.Errorf("unable to get client for client with id '%s' with consent challenge id '%s': %w", id, consent.ChallengeID, err), messageAuthenticationFailed)
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return
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}
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if userSession.IsAnonymous() {
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ctx.Error(fmt.Errorf("unable to redirect for authorization/consent for client with id '%s' with consent challenge id '%s': user is anonymous", client.GetID(), consent.ChallengeID), messageAuthenticationFailed)
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return
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}
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level := client.GetAuthorizationPolicyRequiredLevel(authorization.Subject{Username: userSession.Username, Groups: userSession.Groups, IP: ctx.RemoteIP()})
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switch {
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case authorization.IsAuthLevelSufficient(userSession.AuthenticationLevel, level), level == authorization.Denied:
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var (
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targetURL *url.URL
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form url.Values
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)
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targetURL = ctx.RootURL()
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if form, err = consent.GetForm(); err != nil {
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ctx.Error(fmt.Errorf("unable to get authorization form values from consent session with challenge id '%s': %w", consent.ChallengeID, err), messageAuthenticationFailed)
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return
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}
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form.Set(queryArgConsentID, workflowID.String())
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targetURL.Path = path.Join(targetURL.Path, oidc.EndpointPathAuthorization)
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targetURL.RawQuery = form.Encode()
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if err = ctx.SetJSONBody(redirectResponse{Redirect: targetURL.String()}); err != nil {
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ctx.Logger.Errorf("Unable to set default redirection URL in body: %s", err)
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}
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default:
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ctx.Logger.Warnf("OpenID Connect client '%s' requires 2FA, cannot be redirected yet", client.GetID())
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ctx.ReplyOK()
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return
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}
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}
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func markAuthenticationAttempt(ctx *middlewares.AutheliaCtx, successful bool, bannedUntil *time.Time, username string, authType string, errAuth error) (err error) {
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// We only Mark if there was no underlying error.
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ctx.Logger.Debugf("Mark %s authentication attempt made by user '%s'", authType, username)
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var (
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requestURI, requestMethod string
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)
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if referer := ctx.Request.Header.Referer(); referer != nil {
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var refererURL *url.URL
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if refererURL, err = url.ParseRequestURI(string(referer)); err == nil {
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requestURI = refererURL.Query().Get(queryArgRD)
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requestMethod = refererURL.Query().Get(queryArgRM)
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}
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}
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if err = ctx.Providers.Regulator.Mark(ctx, successful, bannedUntil != nil, username, requestURI, requestMethod, authType); err != nil {
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ctx.Logger.WithError(err).Errorf("Unable to mark %s authentication attempt by user '%s'", authType, username)
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return err
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}
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if successful {
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ctx.Logger.Debugf("Successful %s authentication attempt made by user '%s'", authType, username)
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} else {
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switch {
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case errAuth != nil:
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ctx.Logger.WithError(errAuth).Errorf("Unsuccessful %s authentication attempt by user '%s'", authType, username)
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case bannedUntil != nil:
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ctx.Logger.Errorf("Unsuccessful %s authentication attempt by user '%s' and they are banned until %s", authType, username, bannedUntil)
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default:
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ctx.Logger.Errorf("Unsuccessful %s authentication attempt by user '%s'", authType, username)
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}
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}
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return nil
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}
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func respondUnauthorized(ctx *middlewares.AutheliaCtx, message string) {
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ctx.SetStatusCode(fasthttp.StatusUnauthorized)
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ctx.SetJSONError(message)
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}
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// SetStatusCodeResponse writes a response status code and an appropriate body on either a
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// *fasthttp.RequestCtx or *middlewares.AutheliaCtx.
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func SetStatusCodeResponse(ctx *fasthttp.RequestCtx, statusCode int) {
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ctx.Response.Reset()
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middlewares.SetContentTypeTextPlain(ctx)
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ctx.SetStatusCode(statusCode)
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ctx.SetBodyString(fmt.Sprintf("%d %s", statusCode, fasthttp.StatusMessage(statusCode)))
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}
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