In 80673b4a4 (https://go.dev/cl/157820) I added a never-shrinking
package-global cache to remember which auto-detected auth style (HTTP
headers vs POST) was supported by a certain OAuth2 server, keyed by
its URL.
Unfortunately, some multi-tenant SaaS OIDC servers behave poorly and
have one global OpenID configuration document for all of their
customers which says ("we support all auth styles! you pick!") but
then give each customer control of which style they specifically
accept. This is bogus behavior on their part, but the oauth2 package's
global caching per URL isn't helping. (It's also bad to have a
package-global cache that can never be GC'ed)
So, this change moves the cache to hang off the oauth *Configs
instead. Unfortunately, it does so with some backwards compatiblity
compromises (an atomic.Value hack), lest people are using old versions
of Go still or copying a Config by value, both of which this package
previously accidentally supported, even though they weren't tested.
This change also means that anybody that's repeatedly making ephemeral
oauth.Configs without an explicit auth style will be losing &
reinitializing their cache on any auth style failures + fallbacks to
the other style. I think that should be pretty rare. People seem to
make an oauth2.Config once earlier and stash it away somewhere (often
deep in a token fetcher or HTTP client/transport).
Change-Id: I91f107368ab3c3d77bc425eeef65372a589feb7b
Signed-off-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/515675
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Adrian Dewhurst <adrian@tailscale.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Password-based authentication to the [Keycloak](https://www.keycloak.org/) API requires `grant_type` to be `password`. It would be very helpful if `golang.org/x/oauth2` could be used for this, and all's that missing is the ability to override `grant_type`.
Fixes#283
Change-Id: I439dccb3e57042571ad92f115442ae1b7d59d4e0
GitHub-Last-Rev: 0e6f85e31e
GitHub-Pull-Request: golang/oauth2#363
Reviewed-on: https://go-review.googlesource.com/c/158517
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Allows the HTTP response and body to be extracted without parsing
the error string, but keeps backwards compatibility for users who
are currently doing so.
Fixesgolang/oauth2#173
Change-Id: Id7709da827a155299b047f0bcb74aa8f91b01e96
Reviewed-on: https://go-review.googlesource.com/84156
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Godoc comments should start with the name of the thing they are describing.
Change-Id: Ic248aa8f549b22c716bf967c7574452085ea8c48
Reviewed-on: https://go-review.googlesource.com/36945
Reviewed-by: Chris Broadfoot <cbro@golang.org>
Creates a new package called clientcredentials and
adds transport and token information to the internal
package. Also modifies the oauth2 package to make
use of the newly added files in the internal package.
The clientcredentials package allows for token requests
using a "client credentials" grant type.
Fixes https://github.com/golang/oauth2/issues/7
Change-Id: Iec649d1029870c27a2d1023baa9d52db42ff45e8
Reviewed-on: https://go-review.googlesource.com/2983
Reviewed-by: Burcu Dogan <jbd@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Brad Fitzpatrick
Tom Payne
Adam Shannon
Antoine GIRARD
Ross Light
Tim Cooper
Eric Chiang
Richard Musiol
Jaana Burcu Dogan
Joseph Anthony Pasquale Holsten
Andrew Gerrand
John ShaggyTwoDope Jenkins
Aaron Torres