bb88a926f4
When cURL follows a redirect, it calls the CURLOPT_HEADERFUNCTION for each header received including ones from a redirect. http_request() sets fwrite_wwwauth() as the header function, which will record the wwwauth[] entries for the last step in the redirection chain. However, when http_request_recoverable() sees that cURL followed a redirect, it attempts to update the credentials for the request from the new URL using credential_from_url(). The first thing that does is call credential_clear(), which clears everything including wwwauth_headers. If the new URL should use a credential helper rather than credentials embedded in the URL, this loses the list of authentication methods that the server provided in the redirect. For example, I have a server that supports HTTP but always redirects to HTTPS before handling requests. This redirect breaks OAuth authentication: $ git ls-remote http://server/git => Send header: GET /git/info/refs?service=git-upload-pack HTTP/1.1 <= Recv header: HTTP/1.1 302 Found <= Recv header: Location: https://server.nvidia.com/git/info/refs?service=git-upload-pack == Info: Issue another request to this URL: 'https://server.nvidia.com/git/info/refs?service=git-upload-pack' => Send header: GET /git/info/refs?service=git-upload-pack HTTP/1.1 <= Recv header: HTTP/1.1 401 Unauthorized <= Recv header: WWW-Authenticate: Bearer error="invalid_request", error_description="No bearer token found in the request", msal-tenant-id="<tenant>", msal-client-id="<client>" trace: run_command: 'git credential-cache --timeout 7200 get' trace: start_command: /bin/sh -c 'git credential-cache --timeout 7200 get' 'git credential-cache --timeout 7200 get' trace: built-in: git credential-cache --timeout 7200 get trace: run_command: 'git credential-msal get' trace: start_command: /bin/sh -c 'git credential-msal get' 'git credential-msal get' trace: exec: git-credential-msal get trace: run_command: git-credential-msal get trace: start_command: /usr/bin/git-credential-msal get Username for 'https://server.nvidia.com': ^C When git invokes the credential helper, it doesn't include the wwwauth[] array, so git-credential-msal doesn't think that OAuth is supported [1]. Fix the problem by preserving the wwwauth_headers strvec across the call to credential_from_url(). [1] https://github.com/Binary-Eater/git-credential-msal/blob/trunk/src/git_credential_msal/main.py#L69 Signed-off-by: Aaron Plattner <aplattner@nvidia.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git - fast, scalable, distributed revision control system
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.adoc to get started, then see
Documentation/giteveryday.adoc for a useful minimum set of commands, and
Documentation/git-<commandname>.adoc for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with man gittutorial or git help tutorial, and the
documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.adoc
(man gitcvs-migration or git help cvs-migration if git is
installed).
The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).
Those wishing to help with error message, usage and informational message
string translations (localization l10) should see po/README.md
(a po file is a Portable Object file that holds the translations).
To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://marc.info/?l=git and other archival sites.
Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.
The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):
- random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
- stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
- "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
- "goddamn idiotic truckload of sh*t": when it breaks