/
handler_oidc_consent.go
226 lines (172 loc) · 7.61 KB
/
handler_oidc_consent.go
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package handlers
import (
"database/sql"
"encoding/json"
"fmt"
"net/url"
"path"
"time"
"github.com/google/uuid"
"github.com/authelia/authelia/v4/internal/authorization"
"github.com/authelia/authelia/v4/internal/middlewares"
"github.com/authelia/authelia/v4/internal/model"
"github.com/authelia/authelia/v4/internal/oidc"
"github.com/authelia/authelia/v4/internal/session"
)
// OpenIDConnectConsentGET handles requests to provide consent for OpenID Connect.
func OpenIDConnectConsentGET(ctx *middlewares.AutheliaCtx) {
var (
consentID uuid.UUID
err error
)
if consentID, err = uuid.ParseBytes(ctx.RequestCtx.QueryArgs().PeekBytes(qryArgID)); err != nil {
ctx.Logger.Errorf("Unable to convert '%s' into a UUID: %+v", ctx.RequestCtx.QueryArgs().PeekBytes(qryArgID), err)
ctx.ReplyForbidden()
return
}
var (
consent *model.OAuth2ConsentSession
client oidc.Client
handled bool
)
if _, consent, client, handled = handleOpenIDConnectConsentGetSessionsAndClient(ctx, consentID); handled {
return
}
if err = ctx.SetJSONBody(client.GetConsentResponseBody(consent)); err != nil {
ctx.Error(fmt.Errorf("unable to set JSON body: %w", err), "Operation failed")
}
}
// OpenIDConnectConsentPOST handles consent responses for OpenID Connect.
func OpenIDConnectConsentPOST(ctx *middlewares.AutheliaCtx) {
var (
consentID uuid.UUID
bodyJSON oidc.ConsentPostRequestBody
err error
)
if err = json.Unmarshal(ctx.Request.Body(), &bodyJSON); err != nil {
ctx.Logger.Errorf("Failed to parse JSON bodyJSON in consent POST: %+v", err)
ctx.SetJSONError(messageOperationFailed)
return
}
if consentID, err = uuid.Parse(bodyJSON.ConsentID); err != nil {
ctx.Logger.Errorf("Unable to convert '%s' into a UUID: %+v", bodyJSON.ConsentID, err)
ctx.ReplyForbidden()
return
}
var (
userSession session.UserSession
consent *model.OAuth2ConsentSession
client oidc.Client
handled bool
)
if userSession, consent, client, handled = handleOpenIDConnectConsentGetSessionsAndClient(ctx, consentID); handled {
return
}
if consent.ClientID != bodyJSON.ClientID {
ctx.Logger.Errorf("User '%s' consented to scopes of another client (%s) than expected (%s). Beware this can be a sign of attack",
userSession.Username, bodyJSON.ClientID, consent.ClientID)
ctx.SetJSONError(messageOperationFailed)
return
}
if !client.IsAuthenticationLevelSufficient(userSession.AuthenticationLevel, authorization.Subject{Username: userSession.Username, Groups: userSession.Groups, IP: ctx.RemoteIP()}) {
ctx.Logger.Errorf("User '%s' can't consent to authorization request for client with id '%s' as they are not sufficiently authenticated",
userSession.Username, consent.ClientID)
ctx.SetJSONError(messageOperationFailed)
return
}
if bodyJSON.Consent {
consent.Grant()
if bodyJSON.PreConfigure {
if client.GetConsentPolicy().Mode == oidc.ClientConsentModePreConfigured {
config := model.OAuth2ConsentPreConfig{
ClientID: consent.ClientID,
Subject: consent.Subject.UUID,
CreatedAt: time.Now(),
ExpiresAt: sql.NullTime{Time: time.Now().Add(client.GetConsentPolicy().Duration), Valid: true},
Scopes: consent.GrantedScopes,
Audience: consent.GrantedAudience,
}
var id int64
if id, err = ctx.Providers.StorageProvider.SaveOAuth2ConsentPreConfiguration(ctx, config); err != nil {
ctx.Logger.Errorf("Failed to save the consent pre-configuration to the database: %+v", err)
ctx.SetJSONError(messageOperationFailed)
return
}
consent.PreConfiguration = sql.NullInt64{Int64: id, Valid: true}
ctx.Logger.Debugf("Consent session with id '%s' for user '%s': pre-configured and set to expire at %v", consent.ChallengeID, userSession.Username, config.ExpiresAt.Time)
} else {
ctx.Logger.Warnf("Consent session with id '%s' for user '%s': consent pre-configuration was requested and was ignored because it is not permitted on this client", consent.ChallengeID, userSession.Username)
}
}
}
if err = ctx.Providers.StorageProvider.SaveOAuth2ConsentSessionResponse(ctx, *consent, bodyJSON.Consent); err != nil {
ctx.Logger.Errorf("Failed to save the consent session response to the database: %+v", err)
ctx.SetJSONError(messageOperationFailed)
return
}
var (
redirectURI *url.URL
query url.Values
)
redirectURI = ctx.RootURL()
if query, err = url.ParseQuery(consent.Form); err != nil {
ctx.Logger.Errorf("Failed to parse the consent form values: %+v", err)
ctx.SetJSONError(messageOperationFailed)
return
}
query.Set(queryArgConsentID, consent.ChallengeID.String())
redirectURI.Path = path.Join(redirectURI.Path, oidc.EndpointPathAuthorization)
redirectURI.RawQuery = query.Encode()
response := oidc.ConsentPostResponseBody{RedirectURI: redirectURI.String()}
if err = ctx.SetJSONBody(response); err != nil {
ctx.Error(fmt.Errorf("unable to set JSON bodyJSON in response"), "Operation failed")
}
}
func handleOpenIDConnectConsentGetSessionsAndClient(ctx *middlewares.AutheliaCtx, consentID uuid.UUID) (userSession session.UserSession, consent *model.OAuth2ConsentSession, client oidc.Client, handled bool) {
var (
err error
)
if userSession, err = ctx.GetSession(); err != nil {
ctx.Logger.Errorf("Unable to load user session for challenge id '%s': %v", consentID, err)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
if consent, err = ctx.Providers.StorageProvider.LoadOAuth2ConsentSessionByChallengeID(ctx, consentID); err != nil {
ctx.Logger.Errorf("Unable to load consent session with challenge id '%s': %v", consentID, err)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
if client, err = ctx.Providers.OpenIDConnect.GetFullClient(ctx, consent.ClientID); err != nil {
ctx.Logger.Errorf("Unable to find related client configuration with name '%s': %v", consent.ClientID, err)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
if err = verifyOIDCUserAuthorizedForConsent(ctx, client, userSession, consent, uuid.UUID{}); err != nil {
ctx.Logger.Errorf("Could not authorize the user user '%s' for the consent session with challenge id '%s' on client with id '%s': %v", userSession.Username, consent.ChallengeID, client.GetID(), err)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
switch client.GetConsentPolicy().Mode {
case oidc.ClientConsentModeImplicit:
ctx.Logger.Errorf("Unable to perform OpenID Connect Consent for user '%s' and client id '%s': the client is using the implicit consent mode", userSession.Username, consent.ClientID)
ctx.ReplyForbidden()
return
default:
switch {
case consent.Responded():
ctx.Logger.Errorf("Unable to perform OpenID Connect Consent for user '%s' and client id '%s': the client is using the explicit consent mode and this consent session has already been responded to", userSession.Username, consent.ClientID)
ctx.ReplyForbidden()
return userSession, nil, nil, true
case !consent.CanGrant():
ctx.Logger.Errorf("Unable to perform OpenID Connect Consent for user '%s' and client id '%s': the specified consent session cannot be granted", userSession.Username, consent.ClientID)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
}
if !client.IsAuthenticationLevelSufficient(userSession.AuthenticationLevel, authorization.Subject{Username: userSession.Username, Groups: userSession.Groups, IP: ctx.RemoteIP()}) {
ctx.Logger.Errorf("Unable to perform OpenID Connect Consent for user '%s' and client id '%s': the user is not sufficiently authenticated", userSession.Username, consent.ClientID)
ctx.ReplyForbidden()
return userSession, nil, nil, true
}
return userSession, consent, client, false
}