98 lignes
3,9 Kio
Go
98 lignes
3,9 Kio
Go
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package fosite
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import (
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"context"
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"net/http"
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"strings"
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"net/url"
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"github.com/pkg/errors"
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)
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// Implements
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// * https://tools.ietf.org/html/rfc6749#section-2.3.1
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// Clients in possession of a client password MAY use the HTTP Basic
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// authentication scheme as defined in [RFC2617] to authenticate with
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// the authorization server. The client identifier is encoded using the
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// "application/x-www-form-urlencoded" encoding algorithm per
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// Appendix B, and the encoded value is used as the username; the client
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// password is encoded using the same algorithm and used as the
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// password. The authorization server MUST support the HTTP Basic
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// authentication scheme for authenticating clients that were issued a
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// client password.
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// Including the client credentials in the request-body using the two
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// parameters is NOT RECOMMENDED and SHOULD be limited to clients unable
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// to directly utilize the HTTP Basic authentication scheme (or other
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// password-based HTTP authentication schemes). The parameters can only
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// be transmitted in the request-body and MUST NOT be included in the
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// request URI.
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// * https://tools.ietf.org/html/rfc6749#section-3.2.1
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// - Confidential clients or other clients issued client credentials MUST
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// authenticate with the authorization server as described in
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// Section 2.3 when making requests to the token endpoint.
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// - If the client type is confidential or the client was issued client
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// credentials (or assigned other authentication requirements), the
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// client MUST authenticate with the authorization server as described
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// in Section 3.2.1.
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func (f *Fosite) NewAccessRequest(ctx context.Context, r *http.Request, session Session) (AccessRequester, error) {
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var err error
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accessRequest := NewAccessRequest(session)
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if r.Method != "POST" {
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return accessRequest, errors.Wrap(ErrInvalidRequest, "HTTP method is not POST")
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} else if err := r.ParseForm(); err != nil {
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return accessRequest, errors.Wrap(ErrInvalidRequest, err.Error())
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}
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accessRequest.Form = r.PostForm
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if session == nil {
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return accessRequest, errors.New("Session must not be nil")
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}
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accessRequest.SetRequestedScopes(removeEmpty(strings.Split(r.PostForm.Get("scope"), " ")))
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accessRequest.GrantTypes = removeEmpty(strings.Split(r.PostForm.Get("grant_type"), " "))
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if len(accessRequest.GrantTypes) < 1 {
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return accessRequest, errors.Wrap(ErrInvalidRequest, "No grant type given")
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}
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// Decode client_id and client_secret which should be in "application/x-www-form-urlencoded" format.
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var clientID, clientSecret string
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if id, secret, ok := r.BasicAuth(); !ok {
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return accessRequest, errors.Wrap(ErrInvalidRequest, "HTTP authorization header missing or invalid")
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} else if clientID, err = url.QueryUnescape(id); err != nil {
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return accessRequest, errors.Wrap(ErrInvalidRequest, `The client id in the HTTP authorization header could not be decoded from "application/x-www-form-urlencoded"`)
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} else if clientSecret, err = url.QueryUnescape(secret); err != nil {
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return accessRequest, errors.Wrap(ErrInvalidRequest, `The client secret in the HTTP authorization header could not be decoded from "application/x-www-form-urlencoded"`)
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}
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client, err := f.Store.GetClient(ctx, clientID)
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if err != nil {
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return accessRequest, errors.Wrap(ErrInvalidClient, err.Error())
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}
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if !client.IsPublic() {
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// Enforce client authentication
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if err := f.Hasher.Compare(client.GetHashedSecret(), []byte(clientSecret)); err != nil {
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return accessRequest, errors.Wrap(ErrInvalidClient, err.Error())
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}
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}
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accessRequest.Client = client
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var found bool = false
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for _, loader := range f.TokenEndpointHandlers {
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if err := loader.HandleTokenEndpointRequest(ctx, accessRequest); err == nil {
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found = true
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} else if errors.Cause(err) == ErrUnknownRequest {
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// do nothing
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} else if err != nil {
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return accessRequest, err
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}
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}
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if !found {
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return nil, errors.WithStack(ErrInvalidRequest)
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}
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return accessRequest, nil
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}
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