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In commit 01a834066 (azure: docker: fix ARM builds by replacing gosu(1),
2020-02-18), we've switched our entrypoint from gosu(1) to use sudo(1)
instead to fix our ARM builds. The switch introduced an incompatibility
that now causes our Coverity builds to fail, as the "--preserve-env"
switch will also keep HOME at its current value. As a result, Coverity
now tries to set up its configuration directory in root's home
directory, which it naturally can't write to.
Fix the issue by adding the "--set-home" flag to sudo(1).
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Release 0.99
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This commit also switches our SOVERSION to be "$MAJOR.$MINOR" instead of
"$MINOR", only. This is in preparation of v1.0, where the previous
scheme would've stopped working in an obvious way.
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Give the release a name, "Torschlusspanik" (the fear that time is
running out to act). Indeed, the time is running out for changes to be
included in v1.0.
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Release script
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The current release process is not documented in any way. As a result,
it's not obvious how releases should be done at all, like e.g. which
locations need adjusting.
To fix this, let's introduce a new script that shall from now on be used
to do all releases. As input it gets the tree that shall be released,
the repository in which to do the release, credentials to
authenticate against GitHub and the new version. E.g. executing the
following will create a new release v0.32:
$ ./script/release.py 0.32.0 --user pks-t --password ****
While the password may currently be your usual GitLab password, it's
recommended to use a personal access token intead.
The script will then perform the following steps:
1. Verify that "include/git2/version.h" matches the new version.
2. Verify that "docs/changelog.md" has a section for that new
version.
3. Extract the changelog entries for the current release from
"docs/changelog.md".
4. Generate two archives in "tar.gz" and "zip" format via "git
archive" from the tree passed by the user. If no tree was passed,
we will use "HEAD".
5. Create the GitHub release using the extracted changelog entries
as well as tag and name information derived from the version
passed by the used.
6. Upload both code archives to that release.
This should cover all steps required for a new release and thus ensures
that nothing is missing that shouldn't be.
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Python's PEP 8 specifies that one shall use spaces instead of tabs as
coding style, and we actually honor that currently. Our EditorConfig
does not special-case Python scripts, though, which is why we end up
with our C coding style and thus with tabs.
Special-case "*.py" files to override that default with spaces to fix
this.
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azure: fix ARM32 builds by replacing gosu(1)
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In our test case object::cache::fast_thread_rush, we're creating 100
concurrent threads opening a repository and reading objects from it.
This test actually fails on ARM32 with an out-of-memory error, which
isn't entirely unexpected.
Work around the issue by halving the number of threads.
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Our nightly builds are currently failing due to our ARM-based jobs.
These jobs crash immediately when entering the Docker container with a
exception thrown by Go's language runtime. As we're able to successfully
builds the Docker images in previous steps, it's unlikely to be a bug in
Docker itself. Instead, this exception is thrown by gosu(1), which is a
Go-based utility to drop privileges and run by our entrypoint.
Fix the issue by dropping gosu(1) in favor of sudo(1).
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Our two Docker build instructions for Xenial and Bionic have diverged a
bit. Let's re-synchronize them with each other to make them as similar
as possible.
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The build step for our Docker images currently succeeds even if building
the Docker image fails due to missing && chains in the build script. Fix
this by adding them in.
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Since migrating to Docker containings for our build and test
infrastructure, we do not use the "setup-linux.sh" script anymore.
Remove it to avoid any confusion.
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openssl: fix Valgrind issues in nightly builds
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As OpenSSL loves using uninitialized bytes as another source of entropy,
we need to mark them as defined so that Valgrind won't complain about
use of these bytes. Traditionally, we've been using the macro
`VALGRIND_MAKE_MEM_DEFINED` provided by Valgrind, but starting with
OpenSSL 1.1 the code doesn't compile anymore due to `struct SSL` having
become opaque. As such, we also can't set it as defined anymore, as we
have no way of knowing its size.
Let's change gears instead by just swapping out the allocator functions
of OpenSSL with our own ones. The twist is that instead of calling
`malloc`, we just call `calloc` to have the bytes initialized
automatically. Next to soothing Valgrind, this approach has the benefit
of being completely agnostic of the memory sanitizer and is neatly
contained at a single place.
Note that we shouldn't do this for non-Valgrind builds. As we cannot
set up memory functions for a given SSL context, only, we need to swap
them at a global context. Furthermore, as it's possible to call
`OPENSSL_set_mem_functions` once only, we'd prevent users of libgit2 to
set up their own allocators.
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OpenSSL doesn't initialize bytes on purpose in order to generate
additional entropy. Valgrind isn't too happy about that though, causing
it to generate warninings about various issues regarding use of
uninitialized bytes.
We traditionally had some infrastructure to silence these errors in our
OpenSSL stream implementation, where we invoke the Valgrind macro
`VALGRIND_MAKE_MEMDEFINED` in various callbacks that we provide to
OpenSSL. Naturally, we only include these instructions if a preprocessor
define "VALGRIND" is set, and that in turn is only set if passing
"-DVALGRIND" to CMake. We do that in our usual Azure pipelines, but we
in fact forgot to do this in our nightly build. As a result, we get a
slew of warnings for these nightly builds, but not for our normal
builds.
To fix this, we could just add "-DVALGRIND" to our nightly builds. But
starting with commit d827b11b6 (tests: execute leak checker via CTest
directly, 2019-06-28), we do have a secondary variable that directs
whether we want to use memory sanitizers for our builds. As such, every
user wishing to use Valgrind for our tests needs to pass both options
"VALGRIND" and "USE_LEAK_CHECKER", which is cumbersome and error prone,
as can be seen by our own builds.
Instead, let's consolidate this into a single option, removing the old
"-DVALGRIND" one. Instead, let's just add the preprocessor directive if
USE_LEAK_CHECKER equals "valgrind" and remove "-DVALGRIND" from our own
pipelines.
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fuzzers: Fix the documentation
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Some of the commands are now out of date.
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azure: fix misleading messages printed to stderr being
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In order to properly tear down the test environment, we will kill
git-daemon(1) if we've exercised it. As git-daemon(1) is spawned as a
background process, it is still owned by the shell and thus killing it
later on will print a termination message to the shell's stderr, causing
Azure to report it as an error.
Fix this by disowning the background process.
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The Docker entrypoint currently creates the libgit2 user with "useradd
--create-home". As we start the Docker container with two volumes
pointing into "/home/libgit2/", the home directory will already exist.
While useradd(1) copes with this just fine, it will print error messages
to stderr which end up as failures in our Azure pipelines.
Fix this by simply removing the "--create-home" parameter.
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Without the "--silent" parameter, curl will print a progress meter to
stderr. Azure has the nice feature of interpreting any output to stderr
as errors with a big red warning towards the end of the build. Let's
thus silence curl to not generate any misleading messages.
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When building dependencies for our Docker images, we first download the
sources to disk first, unpack them and finally remove the archive again.
This can be sped up by piping the downloading archive into tar(1)
directly to parallelize both tasks. Furthermore, let's silence curl(1)
to not print to status information to stderr, which tends to be
interpreted as errors by Azure Pipelines.
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tests: iterator: fix iterator expecting too few items
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The testcase iterator::workdir::filesystem_gunk sets up quite a lot of
directories, which is why it only runs in case GITTEST_INVASIVE_SPEED is
set in the environment. Because we do not run our default CI with this
variable, we didn't notice commit 852c83ee4 (refs: refuse to delete
HEAD, 2020-01-15) breaking the test as it introduced a new reference to
the "testrepo" repository.
Fix the oversight by increasing the number of expected iterator items.
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transports: http: fix custom headers not being applied
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In commit b9c5b15a7 (http: use the new httpclient, 2019-12-22), the HTTP
code got refactored to extract a generic HTTP client that operates
independently of the Git protocol. Part of refactoring was the creation
of a new `git_http_request` struct that encapsulates the generation of
requests. Our Git-specific HTTP transport was converted to use that in
`generate_request`, but during the process we forgot to set up custom
headers for the `git_http_request` and as a result we do not send out
these headers anymore.
Fix the issue by correctly setting up the request's custom headers and
add a test to verify we correctly send them.
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azure: fix Coverity pipeline
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There's several issues with our Coverity builds, like e.g. missing wget
in our containers. Simplify our Coverity pipeline and fix these issues.
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Back in commit 5a6740e7f (azure: build Docker images as part of the
pipeline, 2019-08-02), we have converted our pipelines to use self-built
Docker images to ease making changes to our Dockerfiles. The commit
didn't adjust our Coverity pipeline, though, so let's do this now.
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In commit bbc0b20bd (azure: fix Coverity's build due to wrong container
name, 2019-08-02), Coverity builds were fixed to use the correct
container names. Unfortunately, the "fix" completely broke our Coverity
builds due to using wrong syntax for the Docker task. Let's fix this by
using "imageName" instead of the Docker dict.
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azure: tests: re-run flaky proxy tests
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While we already do have logic to re-run flaky tests, the FAILED
variable currently does not get reset to "0". As a result, successful
reruns will still cause the test to be registered as failed.
Fix this by resetting the variable accordingly.
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The proxy tests regularly fail in our CI environment. Unfortunately,
this is expected due to the network layer. Thus, let's re-try the proxy
tests up to five times in case they fail.
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fetchhead: strip credentials from remote URL
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If fetching from an anonymous remote via its URL, then the URL gets
written into the FETCH_HEAD reference. This is mainly done to give
valuable context to some commands, like for example git-merge(1), which
will put the URL into the generated MERGE_MSG. As a result, what gets
written into FETCH_HEAD may become public in some cases. This is
especially important considering that URLs may contain credentials, e.g.
when cloning 'https://foo:bar@example.com/repo' we persist the complete
URL into FETCH_HEAD and put it without any kind of sanitization into the
MERGE_MSG. This is obviously bad, as your login data has now just leaked
as soon as you do git-push(1).
When writing the URL into FETCH_HEAD, upstream git does strip
credentials first. Let's do the same by trying to parse the remote URL
as a "real" URL, removing any credentials and then re-formatting the
URL. In case this fails, e.g. when it's a file path or not a valid URL,
we just fall back to using the URL as-is without any sanitization. Add
tests to verify our behaviour.
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azure-pipelines: properly expand negotiate passwords
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To allow testing against a Kerberos instance, we have added variables
for the Kerberos password to allow authentication against LIBGIT2.ORG in
commit e5fb5fe5a (ci: perform SPNEGO tests, 2019-10-20). To set up the
password, we assign
"GITTEST_NEGOTIATE_PASSWORD=$(GITTEST_NEGOTIATE_PASSWORD)"
in the environmentVariables section which is then passed through to a
template. As the template does build-time expansion of the environment
variables, it will expand the above line verbosely, and due to the
envVar section not doing any further expansion the password variable
will end up with the value "$(GITTEST_NEGOTIATE_PASSWORD)" in the
container's environment.
Fix this fixed by doing expansion of GITTEST_NEGOTIATE_PASSWORD at
build-time, as well.
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cred: change enum to git_credential_t and GIT_CREDENTIAL_*
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We avoid abbreviations where possible; rename git_cred to
git_credential.
In addition, we have standardized on a trailing `_t` for enum types,
instead of using "type" in the name. So `git_credtype_t` has become
`git_credential_t` and its members have become `GIT_CREDENTIAL` instead
of `GIT_CREDTYPE`.
Finally, the source and header files have been renamed to `credential`
instead of `cred`.
Keep previous name and values as deprecated, and include the new header
files from the previous ones.
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Update link to libgit2 Julia language binding
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Return int from non-free functions
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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Stop returning a void for functions, future-proofing them to allow them
to fail.
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