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Because TLS certificate verification is extremely complex, the lookup issuer function may be tempting to misuse even by experienced developers. There is a notion that the issuer certificate will always be used in the final certification path, but it's just not always true. Trying to make security decisions based on the results of this function is a trap, so let's document that. It turns out that old versions of glib-networking actually reordered the certificate chain to match the final verification path. This no longer happens since a long time ago, because it was a buggy mess. Instead, we rely on the TLS library to build the final verification path. Their path building is not very good, but at least it's consistent. The point of these doc updates is to clarify that only the TLS library can make security decisions. Document that HTTP requests may be performed to look up missing certificates. Finally, let's document that certificate verification using GTlsDatabase cannot be as smart as certificate verification performed directly by GTlsConnection.
GLib
GLib is the low-level core library that forms the basis for projects such as GTK and GNOME. It provides data structure handling for C, portability wrappers, and interfaces for such runtime functionality as an event loop, threads, dynamic loading, and an object system.
The official download locations are: https://download.gnome.org/sources/glib
The official web site is: https://www.gtk.org/
Installation
See the file 'INSTALL.in'
How to report bugs
Bugs should be reported to the GNOME issue tracking system. (https://gitlab.gnome.org/GNOME/glib/issues/new). You will need to create an account for yourself.
In the bug report please include:
- Information about your system. For instance:
- What operating system and version
- For Linux, what version of the C library
- And anything else you think is relevant.
- How to reproduce the bug.
- If you can reproduce it with one of the test programs that are built in the tests/ subdirectory, that will be most convenient. Otherwise, please include a short test program that exhibits the behavior. As a last resort, you can also provide a pointer to a larger piece of software that can be downloaded.
- If the bug was a crash, the exact text that was printed out when the crash occurred.
- Further information such as stack traces may be useful, but is not necessary.
Patches
Patches should also be submitted as merge requests to gitlab.gnome.org. If the patch fixes an existing issue, please refer to the issue in your commit message with the following notation (for issue 123): Closes: #123
Otherwise, create a new merge request that introduces the change, filing a separate issue is not required.
Default branch renamed to main
The default development branch of GLib has been renamed to main. To update
your local checkout, use:
git checkout master
git branch -m master main
git fetch
git branch --unset-upstream
git branch -u origin/main
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main