69 lignes
2,3 Kio
Go
69 lignes
2,3 Kio
Go
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package fosite
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import (
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"net/http"
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"strings"
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"context"
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"github.com/pkg/errors"
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)
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func (c *Fosite) NewAuthorizeRequest(ctx context.Context, r *http.Request) (AuthorizeRequester, error) {
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request := &AuthorizeRequest{
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ResponseTypes: Arguments{},
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HandledResponseTypes: Arguments{},
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Request: *NewRequest(),
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}
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if err := r.ParseForm(); err != nil {
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return request, errors.Wrap(ErrInvalidRequest, err.Error())
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}
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request.Form = r.Form
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client, err := c.Store.GetClient(ctx, request.GetRequestForm().Get("client_id"))
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if err != nil {
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return request, errors.WithStack(ErrInvalidClient)
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}
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request.Client = client
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// Fetch redirect URI from request
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rawRedirURI, err := GetRedirectURIFromRequestValues(r.Form)
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if err != nil {
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return request, errors.Wrap(ErrInvalidRequest, err.Error())
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}
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// Validate redirect uri
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redirectURI, err := MatchRedirectURIWithClientRedirectURIs(rawRedirURI, client)
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if err != nil {
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return request, errors.Wrap(ErrInvalidRequest, err.Error())
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} else if !IsValidRedirectURI(redirectURI) {
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return request, errors.Wrap(ErrInvalidRequest, "not a valid redirect uri")
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}
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request.RedirectURI = redirectURI
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// https://tools.ietf.org/html/rfc6749#section-3.1.1
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// Extension response types MAY contain a space-delimited (%x20) list of
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// values, where the order of values does not matter (e.g., response
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// type "a b" is the same as "b a"). The meaning of such composite
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// response types is defined by their respective specifications.
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request.ResponseTypes = removeEmpty(strings.Split(r.Form.Get("response_type"), " "))
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// rfc6819 4.4.1.8. Threat: CSRF Attack against redirect-uri
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// The "state" parameter should be used to link the authorization
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// request with the redirect URI used to deliver the access token (Section 5.3.5).
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//
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// https://tools.ietf.org/html/rfc6819#section-4.4.1.8
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// The "state" parameter should not be guessable
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state := r.Form.Get("state")
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if len(state) < MinParameterEntropy {
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// We're assuming that using less then 8 characters for the state can not be considered "unguessable"
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return request, errors.Wrapf(ErrInvalidState, "state length must at least be %d characters long", MinParameterEntropy)
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}
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request.State = state
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// Remove empty items from arrays
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request.SetRequestedScopes(removeEmpty(strings.Split(r.Form.Get("scope"), " ")))
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return request, nil
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}
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