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flow_authorize_code_token.go
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flow_authorize_code_token.go
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package oauth2
import (
"net/http"
"time"
"github.com/ory-am/fosite"
"github.com/pkg/errors"
"golang.org/x/net/context"
)
// HandleTokenEndpointRequest implements
// * https://tools.ietf.org/html/rfc6749#section-4.1.3 (everything)
func (c *AuthorizeExplicitGrantHandler) HandleTokenEndpointRequest(ctx context.Context, r *http.Request, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "authorization_code".
if !request.GetGrantTypes().Exact("authorization_code") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
if !request.GetClient().GetGrantTypes().Has("authorization_code") {
return errors.Wrap(fosite.ErrInvalidGrant, "The client is not allowed to use grant type authorization_code")
}
code := r.PostForm.Get("code")
signature := c.AuthorizeCodeStrategy.AuthorizeCodeSignature(code)
authorizeRequest, err := c.AuthorizeCodeGrantStorage.GetAuthorizeCodeSession(ctx, signature, request.GetSession())
if errors.Cause(err) == fosite.ErrNotFound {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
} else if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
// The authorization server MUST verify that the authorization code is valid
if err := c.AuthorizeCodeStrategy.ValidateAuthorizeCode(ctx, request, code); err != nil {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
}
// Override scopes
request.SetRequestedScopes(authorizeRequest.GetRequestedScopes())
// The authorization server MUST ensure that the authorization code was issued to the authenticated
// confidential client, or if the client is public, ensure that the
// code was issued to "client_id" in the request,
if authorizeRequest.GetClient().GetID() != request.GetClient().GetID() {
return errors.Wrap(fosite.ErrInvalidRequest, "Client ID mismatch")
}
// ensure that the "redirect_uri" parameter is present if the
// "redirect_uri" parameter was included in the initial authorization
// request as described in Section 4.1.1, and if included ensure that
// their values are identical.
forcedRedirectURI := authorizeRequest.GetRequestForm().Get("redirect_uri")
if forcedRedirectURI != "" && forcedRedirectURI != r.PostForm.Get("redirect_uri") {
return errors.Wrap(fosite.ErrInvalidRequest, "Redirect URI mismatch")
}
// Checking of POST client_id skipped, because:
// If the client type is confidential or the client was issued client
// credentials (or assigned other authentication requirements), the
// client MUST authenticate with the authorization server as described
// in Section 3.2.1.
request.SetSession(authorizeRequest.GetSession())
return nil
}
func (c *AuthorizeExplicitGrantHandler) PopulateTokenEndpointResponse(ctx context.Context, req *http.Request, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
// grant_type REQUIRED.
// Value MUST be set to "authorization_code".
if !requester.GetGrantTypes().Exact("authorization_code") {
return errors.Wrap(fosite.ErrUnknownRequest, "")
}
code := req.PostForm.Get("code")
signature := c.AuthorizeCodeStrategy.AuthorizeCodeSignature(code)
authorizeRequest, err := c.AuthorizeCodeGrantStorage.GetAuthorizeCodeSession(ctx, signature, requester.GetSession())
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
} else if err := c.AuthorizeCodeStrategy.ValidateAuthorizeCode(ctx, requester, code); err != nil {
return errors.Wrap(fosite.ErrInvalidRequest, err.Error())
}
access, accessSignature, err := c.AccessTokenStrategy.GenerateAccessToken(ctx, requester)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
for _, scope := range authorizeRequest.GetGrantedScopes() {
requester.GrantScope(scope)
}
var refresh, refreshSignature string
if authorizeRequest.GetGrantedScopes().Has("offline") {
refresh, refreshSignature, err = c.RefreshTokenStrategy.GenerateRefreshToken(ctx, requester)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
}
if err := c.AuthorizeCodeGrantStorage.PersistAuthorizeCodeGrantSession(ctx, signature, accessSignature, refreshSignature, requester); err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
responder.SetAccessToken(access)
responder.SetTokenType("bearer")
responder.SetExpiresIn(c.AccessTokenLifespan / time.Second)
responder.SetScopes(requester.GetGrantedScopes())
if refresh != "" {
responder.SetExtra("refresh_token", refresh)
}
return nil
}