6dcbdc0d66
Users sometimes provide a "username:password" combination in their plaintext URLs. Since Git stores these URLs in plaintext in the .git/config file, this is a very insecure way of storing these credentials. Credential managers are a more secure way of storing this information. System administrators might want to prevent this kind of use by users on their machines. Create a new "fetch.credentialsInUrl" config option and teach Git to warn or die when seeing a URL with this kind of information. The warning anonymizes the sensitive information of the URL to be clear about the issue. This change currently defaults the behavior to "allow" which does nothing with these URLs. We can consider changing this behavior to "warn" by default if we wish. At that time, we may want to add some advice about setting fetch.credentialsInUrl=ignore for users who still want to follow this pattern (and not receive the warning). An earlier version of this change injected the logic into url_normalize() in urlmatch.c. While most code paths that parse URLs eventually normalize the URL, that normalization does not happen early enough in the stack to avoid attempting connections to the URL first. By inserting a check into the remote validation, we identify the issue before making a connection. In the old code path, this was revealed by testing the new t5601-clone.sh test under --stress, resulting in an instance where the return code was 13 (SIGPIPE) instead of 128 from the die(). However, we can reuse the parsing information from url_normalize() in order to benefit from its well-worn parsing logic. We can use the struct url_info that is created in that method to replace the password with "<redacted>" in our error messages. This comes with a slight downside that the normalized URL might look slightly different from the input URL (for instance, the normalized version adds a closing slash). This should not hinder users figuring out what the problem is and being able to fix the issue. As an attempt to ensure the parsing logic did not catch any unintentional cases, I modified this change locally to to use the "die" option by default. Running the test suite succeeds except for the explicit username:password URLs used in t5550-http-fetch-dumb.sh and t5541-http-push-smart.sh. This means that all other tested URLs did not trigger this logic. The tests show that the proper error messages appear (or do not appear), but also count the number of error messages. When only warning, each process validates the remote URL and outputs a warning. This happens twice for clone, three times for fetch, and once for push. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
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| Documentation | ||
| block-sha1 | ||
| builtin | ||
| ci | ||
| compat | ||
| contrib | ||
| ewah | ||
| git-gui | ||
| gitk-git | ||
| gitweb | ||
| mergetools | ||
| negotiator | ||
| perl | ||
| po | ||
| ppc | ||
| refs | ||
| reftable | ||
| sha1collisiondetection@855827c583 | ||
| sha1dc | ||
| sha256 | ||
| t | ||
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| trace2 | ||
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| CODE_OF_CONDUCT.md | ||
| COPYING | ||
| GIT-VERSION-GEN | ||
| INSTALL | ||
| LGPL-2.1 | ||
| Makefile | ||
| README.md | ||
| RelNotes | ||
| SECURITY.md | ||
| abspath.c | ||
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README.md
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.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-<commandname>.txt 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.txt
(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). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://lore.kernel.org/git/, http://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