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flow_authorize_code_auth.go
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flow_authorize_code_auth.go
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package oauth2
import (
"strings"
"time"
"fmt"
"context"
"github.com/ory/fosite"
"github.com/pkg/errors"
)
// AuthorizeExplicitGrantTypeHandler is a response handler for the Authorize Code grant using the explicit grant type
// as defined in https://tools.ietf.org/html/rfc6749#section-4.1
type AuthorizeExplicitGrantHandler struct {
AccessTokenStrategy AccessTokenStrategy
RefreshTokenStrategy RefreshTokenStrategy
AuthorizeCodeStrategy AuthorizeCodeStrategy
// AuthorizeCodeGrantStorage is used to persist session data across requests.
AuthorizeCodeGrantStorage AuthorizeCodeGrantStorage
// AuthCodeLifespan defines the lifetime of an authorize code.
AuthCodeLifespan time.Duration
// AccessTokenLifespan defines the lifetime of an access token.
AccessTokenLifespan time.Duration
ScopeStrategy fosite.ScopeStrategy
}
func (c *AuthorizeExplicitGrantHandler) HandleAuthorizeEndpointRequest(ctx context.Context, ar fosite.AuthorizeRequester, resp fosite.AuthorizeResponder) error {
// This let's us define multiple response types, for example open id connect's id_token
if !ar.GetResponseTypes().Exact("code") {
return nil
}
if !ar.GetClient().GetResponseTypes().Has("code") {
return errors.WithStack(fosite.ErrInvalidGrant)
}
if !fosite.IsRedirectURISecure(ar.GetRedirectURI()) {
return errors.Wrap(fosite.ErrInvalidRequest, "Redirect URL is using an insecure protocol, http is only allowed for hosts with suffix `localhost`, for example: http://myapp.localhost/")
}
client := ar.GetClient()
for _, scope := range ar.GetRequestedScopes() {
if !c.ScopeStrategy(client.GetScopes(), scope) {
return errors.Wrap(fosite.ErrInvalidScope, fmt.Sprintf("The client is not allowed to request scope %s", scope))
}
}
return c.IssueAuthorizeCode(ctx, ar, resp)
}
func (c *AuthorizeExplicitGrantHandler) IssueAuthorizeCode(ctx context.Context, ar fosite.AuthorizeRequester, resp fosite.AuthorizeResponder) error {
code, signature, err := c.AuthorizeCodeStrategy.GenerateAuthorizeCode(ctx, ar)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
ar.GetSession().SetExpiresAt(fosite.AuthorizeCode, time.Now().Add(c.AuthCodeLifespan))
if err := c.AuthorizeCodeGrantStorage.CreateAuthorizeCodeSession(ctx, signature, ar); err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
resp.AddQuery("code", code)
resp.AddQuery("state", ar.GetState())
resp.AddQuery("scope", strings.Join(ar.GetGrantedScopes(), " "))
ar.SetResponseTypeHandled("code")
return nil
}