|
8dde7e11
|
2018-12-19T11:04:58
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|
refdb_fs: refactor error handling in `refdb_reflog_fs__delete`
The function `refdb_reflog_fs__delete` uses the `if (!error && foobar())`
pattern of checking, where error conditions are being checked by following calls
to different code. This does not match our current style, where the call-site of
a function is usually directly responsible for checking the return value.
Convert the function to use `if ((error = foobar()) < 0) goto out;` style. Note
that this changes the code flow a bit: previously, we were always trying to
delete empty reference hierarchies even if deleting the reflog entry has failed.
This wasn't much of a problem -- if deletion failed, the hierarchy will still
contain at least one file and thus the function call was an expensive no-op.
Now, we will only perform this deletion if we have successfully removed the
reflog.
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bc219657
|
2018-12-19T11:01:55
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Merge pull request #4833 from csware/drop-empty-dirs
Remove empty (sub-)directories when deleting refs
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8b2670b1
|
2018-12-19T10:34:00
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Merge pull request #4910 from libgit2/cmn/annotated-from-tag
Support creating annotated commits from annotated tags
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6ea9381b
|
2018-12-14T14:43:09
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annotated_commit: peel to commit instead of assuming we have one
We want to allow the creation of annotated commits out of annotated tags and for
that we have to peel the reference all the way to the commit instead of stopping
at the first id it provides.
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5bd78c48
|
2018-12-14T14:41:17
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refs: constify git_reference_peel
We have no need to take a non-const reference. This does involve some other work
to make sure we don't mix const and non-const variables, but by splitting what
we want each variable to do we can also simplify the logic for when we do want
to free a new reference we might have allocated.
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0f299365
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2018-12-14T14:29:36
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annotated_commit: add failing test for looking up from annotated tag
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da8138b0
|
2018-12-06T12:59:17
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Merge pull request #4906 from QBobWatson/bugfix
Fix segfault in loose_backend__readstream
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2f3c4b69
|
2018-12-06T10:48:20
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Typesetting conventions
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8092c431
|
2018-12-05T10:01:14
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Merge pull request #4905 from palmin/proxy_stream_close
make proxy_stream_close close target stream even on errors
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f4835e44
|
2018-12-04T21:48:12
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make proxy_stream_close close target stream even on errors
When git_filter_apply_fn callback returns a error while smudging proxy_stream_close
ends up returning without closing the stream. This is turn makes blob_content_to_file
crash as it asserts the stream being closed whether there are errors or not.
Closing the target stream on error fixes this problem.
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08afdb57
|
2018-12-04T10:59:25
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Removed one null check
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36f80742
|
2018-12-04T10:12:24
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Fix segfault in loose_backend__readstream
If the routine exits with error before stream or hash_ctx is initialized, the
program will segfault when trying to free them.
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788fccc4
|
2018-12-01T12:13:19
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Merge pull request #4807 from libgit2/ethomson/index_fixes
Index API updates for consistency
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168fe39b
|
2018-11-28T14:26:57
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object_type: use new enumeration names
Use the new object_type enumeration names within the codebase.
|
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18e71e6d
|
2018-11-28T13:31:06
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index: use new enum and structure names
Use the new-style index names throughout our own codebase.
|
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19faf7c5
|
2018-11-14T23:35:48
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object_type: update public API to use git_object_t
git_object_t is the future; update the public API to use it. This will
also ensure that we can build our tests which make use of the old API
without modification (and without compiler warnings).
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26b21b39
|
2018-11-14T22:48:10
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object_type: remove unused object type flags
The two "reserved" bits in `git_object_t` are unused. They were
included for completeness, but downstream users should never use them
and they should not have been made public.
These values are never set.
With the refactoring of `git_otype` into `git_object_t`, we can remove
these from the new API. They will remain in the old (deprecated) API
in the unlikely event that someone was using them.
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7e7859a1
|
2018-11-14T21:12:55
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object_type: update enumeration names
Update the `git_otype` names to reflect our current naming conventions.
`git_otype` is now `git_object_t` and the `GIT_OBJ_*` values are now
`GIT_OBJECT_*` values.
The old macro, enumeration and structure names are retained and simply
set to the new names.
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4e892ae5
|
2018-11-14T21:00:25
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index: update enum and structure names
We have various macro, enumeration and structure names that were
introduced (very) early in the project and do not match our current
naming conventions. For instance: `GIT_IDXENTRY...` flags that
correspond to a structure named `git_index_entry`.
Update these to match the current guidance. The old macros and
enumeration names are reflected as new macros in order to support
backward compatibility (and do so without warnings for consumers).
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0ddc6094
|
2018-11-30T09:46:14
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Merge pull request #4770 from tiennou/feature/merge-analysis-any-branch
Allow merge analysis against any reference
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e7873eb2
|
2018-11-29T08:00:31
|
|
Merge pull request #4888 from TheBB/add-cb
revwalk: Allow changing hide_cb
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487233fa
|
2018-11-29T07:21:41
|
|
Merge pull request #4895 from pks-t/pks/unused-warnings
Unused function warnings
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a904fc6d
|
2018-11-28T20:31:30
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Merge pull request #4870 from libgit2/ethomson/proxy
Add builtin proxy support for the http transport
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30ac46aa
|
2018-11-28T10:12:43
|
|
http: reset replay_count upon connection
Reset the replay_count upon a successful connection. It's possible that
we could encounter a situation where we connect successfully but need to
replay a request - for example, a connection and initial request
succeeds without authentication but a subsequent call does require
authentication. Reset the replay count upon any successful request to
afford subsequent replays room to manuever.
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02bb39f4
|
2018-11-22T08:49:09
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stream registration: take an enum type
Accept an enum (`git_stream_t`) during custom stream registration that
indicates whether the registration structure should be used for standard
(non-TLS) streams or TLS streams.
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52478d7d
|
2018-11-18T19:54:49
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|
http: don't allow SSL connections to a proxy
Temporarily disallow SSL connections to a proxy until we can understand
the valgrind warnings when tunneling OpenSSL over OpenSSL.
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41f620d9
|
2018-11-18T19:10:50
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|
http: only load proxy configuration during connection
Only load the proxy configuration during connection; we need this data
when we're going to connect to the server, however we may mutate it
after connection (connecting through a CONNECT proxy means that we
should send requests like normal). If we reload the proxy configuration
but do not actually reconnect (because we're in a keep-alive session)
then we will reload the proxy configuration that we should have mutated.
Thus, only load the proxy configuration when we know that we're going to
reconnect.
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21142c5a
|
2018-10-29T10:04:48
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http: remove cURL
We previously used cURL to support HTTP proxies. Now that we've added
this support natively, we can remove the curl dependency.
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2878ad08
|
2018-10-29T08:59:33
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|
streams: remove unused tls functions
The implementations of git_openssl_stream_new and
git_mbedtls_stream_new have callers protected by #ifdefs and
are never called unless compiled in. There's no need for a
dummy implementation. Remove them.
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5d4e1e04
|
2018-10-28T21:27:56
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|
http: use CONNECT to talk to proxies
Natively support HTTPS connections through proxies by speaking CONNECT
to the proxy and then adding a TLS connection on top of the socket.
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43b592ac
|
2018-10-25T08:49:01
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|
tls: introduce a wrap function
Introduce `git_tls_stream_wrap` which will take an existing `stream`
with an already connected socket and begin speaking TLS on top of it.
This is useful if you've built a connection to a proxy server and you
wish to begin CONNECT over it to tunnel a TLS connection.
Also update the pluggable TLS stream layer so that it can accept a
registration structure that provides an `init` and `wrap` function,
instead of a single initialization function.
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6ba3e6af
|
2018-11-18T21:53:48
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|
proxy tests: rename credential callback
Rename credential callback to proxy_cred_cb to match new cert callback.
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394ae7e1
|
2018-10-22T17:35:35
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|
proxy tests: support self-signed proxy cert
Give the proxy tests a proxy certificate callback, and allow self-signed
certificates when the `GITTEST_REMOTE_PROXY_SELFSIGNED` environment
variable is set (to anything). In that case, simply compare the hostname
from the callback to the hostname that we connected to.
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df2cc108
|
2018-11-18T10:29:07
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|
stream: provide generic registration API
Update the new stream registration API to be `git_stream_register`
which takes a registration structure and a TLS boolean. This allows
callers to register non-TLS streams as well as TLS streams.
Provide `git_stream_register_tls` that takes just the init callback for
backward compatibliity.
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0467606f
|
2018-11-18T11:00:11
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|
http: disallow repeated headers from servers
Don't allow servers to send us multiple Content-Type, Content-Length
or Location headers.
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3a2e4836
|
2018-11-18T09:52:12
|
|
CMake: disable deprecated documentation sync
The `-Wdocumentation-deprecated-sync` option will warn when there is a
doxygen `\deprecated` tag but there is no corresponding deprecation
attribute on the function. We want to encourage users to not use
particular APIs by marking them deprecated in the documentation without
necessarily raising a compiler warning by marking an item as deprecated.
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45054732
|
2018-10-29T10:45:59
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|
tests: optionally ignore https cert validation
For testing, we may wish to use a man-in-the-middle proxy that can
inspect the CONNECT traffic to our test endpoints. For this, we will
need to accept the proxy's certificate, which will not be valid for the
true endpoint.
Add a new environment variable, GITTEST_REMOTE_SSL_NOVERIFY to disable
https certificate validation for the tests.
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b2ed778a
|
2018-11-18T22:20:10
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|
http transport: reset error message on cert failure
Store the error message from the underlying TLS library before calling
the certificate callback. If it refuses to act (demonstrated by
returning GIT_PASSTHROUGH) then restore the error message. Otherwise,
if the callback does not set an error message, set a sensible default
that implicates the callback itself.
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2ce2315c
|
2018-10-22T17:33:45
|
|
http transport: support cert check for proxies
Refactor certificate checking so that it can easily be called for
proxies or the remote server.
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|
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74c6e08e
|
2018-10-22T14:56:53
|
|
http transport: provide proxy credentials
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|
496da38c
|
2018-10-22T12:48:45
|
|
http transport: refactor storage
Create a simple data structure that contains information about the
server being connected to, whether that's the actual remote endpoint
(git server) or an intermediate proxy. This allows for organization of
streams, authentication state, etc.
|
|
|
6af8572c
|
2018-10-22T11:29:01
|
|
http transport: cap number of authentication replays
Put a limit on the number of authentication replays in the HTTP
transport. Standardize on 7 replays for authentication or redirects,
which matches the behavior of the WinHTTP transport.
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|
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22654812
|
2018-10-22T11:24:05
|
|
http transport: prompt for proxy credentials
Teach the HTTP transport how to prompt for proxy credentials.
|
|
|
0328eef6
|
2018-10-22T11:14:06
|
|
http transport: further refactor credential handling
Prepare credential handling to understand both git server and proxy
server authentication.
|
|
|
32cb56ce
|
2018-10-22T10:16:54
|
|
http transport: refactor credential handling
Factor credential handling into its own function. Additionally, add
safety checks to ensure that we are in a valid state - that we have
received a valid challenge from the server and that we have
configuration to respond to that challenge.
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|
|
e6e399ab
|
2018-10-22T09:49:54
|
|
http transport: use HTTP proxies when requested
The HTTP transport should understand how to apply proxies when
configured with `GIT_PROXY_SPECIFIED` and `GIT_PROXY_SPECIFIED`.
When a proxy is configured, the HTTP transport will now connect
to the proxy (instead of directly to the git server), and will
request the properly-formed URL of the git server endpoint.
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|
|
e6f1931a
|
2018-10-22T00:09:24
|
|
http: rename http subtransport's `io` to `gitserver_stream`
Rename `http_subtransport->io` to `http_subtransport->gitserver_stream`
to clarify its use, especially as we might have additional streams (eg
for a proxy) in the future.
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|
4ecc14cd
|
2018-10-21T23:47:53
|
|
tests: support optional PROXY_SCHEME
As we want to support HTTPS proxies, support an optional
`GITTEST_REMOTE_PROXY_SCHEME` environment variable for tests that will
allow for HTTPS support. (When unset, the tests default to HTTP
proxies.)
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|
|
de60d9b4
|
2018-10-21T21:00:37
|
|
tests: PROXY_URL is more accurately PROXY_HOST
Change the `GITTEST_REMOTE_PROXY_URL` environment variable to be
`GITTEST_REMOTE_PROXY_HOST`, since it is a host:port combination, not an
actual URL. (We cannot use a URL here since we may want to include the
username:password combination in the constructed URL.)
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c07ff4cb
|
2018-10-21T14:17:06
|
|
http: rename `connection_data` -> `gitserver_data`
Rename the `connection_data` struct member to `gitserver_data`, to
disambiguate future `connection_data`s that apply to the proxy, not the
final server endpoint.
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|
|
ed72465e
|
2018-10-13T19:16:54
|
|
proxy: propagate proxy configuration errors
|
|
|
dcd00638
|
2018-11-28T14:45:55
|
|
Merge pull request #4898 from pks-t/pks/config-parent-is-file
config: fix adding files if their parent directory is a file
|
|
|
14a9a4f3
|
2018-11-21T11:18:46
|
|
tests: move apply_helpers functions into own compilation unit
Currently, the "apply_helper" functions used for testing the apply logic are all
statically defined in the "apply_helpers.h" header file. This may lead to
warnings from the compiler in case where this header file is included, but not
all functions it brings along are used in the compilation unit where it has been
included into.
Fix these potential warnings by moving the implementation into its own
compilation unit "apply_helpers.c".
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|
|
ffe39bab
|
2018-11-23T20:04:37
|
|
cmake: enable warnings for unused const variables
Together with the warnings for unused warnings, we always had warnings
for unused constant variables disabled since commit 823c0e9cc (Fix
broken logic for attr cache invalidation, 2014-04-17). As we have now
fixed all occurrences of such variables, we can safely enable those
warnings again.
|
|
|
2521e11c
|
2018-11-23T20:02:31
|
|
tests: mailmap: avoid definition of unused static variables
The mailmap testdata header contains a set of static variable
definitions. As these variables aren't used in all places where they are
used, they trigger the unused-const-variable warnings. As we have
currently disabled those warnings explicitly, they are never triggered,
but we intend to enable them.
Avoid the issue by only keeping variable definitions that are actually
used in all locations. Move the others to where they are used.
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f2f5ec84
|
2018-11-23T19:27:09
|
|
khash: move khash include into implementation files
The current map implementations directly include the "khash.h" headers
into their own headers to make available a set of static functions,
defines et cetera. Besides leaking the complete khash namespace into
files wherever khashes are used, this also triggers Clang's
-Wunused-function warnings when some of the static functions are not
being used at all.
Fix the issue by moving the includes into the respective map
implementation files. Add forward declares for all the map types to make
them known.
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|
852bc9f4
|
2018-11-23T19:26:24
|
|
khash: remove intricate knowledge of khash types
Instead of using the `khiter_t`, `git_strmap_iter` and `khint_t` types,
simply use `size_t` instead. This decouples code from the khash stuff
and makes it possible to move the khash includes into the implementation
files.
|
|
|
5bfb3b58
|
2018-11-23T18:48:40
|
|
khash: implement map-specific foreach macros
The current foreach map macros simply redirect to the type-indifferent
`kh_foreach` macro. As this type-indifferent macro directly accesses the
structures, the current implementation makes it impossible to make the
stuctures private to the implementation only. And making them private is
required to move out the khash include into the implementations to
decrease the namespace leak.
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|
|
382b668b
|
2018-11-23T18:38:18
|
|
khash: implement begin/end via functions instead of macros
Right now, the `git_*map_begin()` and `git_*map_end()` helpers are
implemented via macros which simply redirect to `kh_begin` and `kh_end`.
As these macros refer to members of the map structures, they make it
impossible to move the khash include into the implementation files.
Implement these helpers as real functions instead to further decouple
the headers from implementations.
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|
|
ae765d00
|
2018-11-23T19:26:48
|
|
submodule: remove string map implementation that strips trailing slashes
The submodule code currently has its own implementation of a string map,
which overrides the hashing and hash equals functions with functions
that ignore potential trailing slashes. These functions aren't actually
used by our code, making them useless.
|
|
|
02789782
|
2018-11-23T18:37:57
|
|
idxmap: remove unused foreach macros
The foreach macros of the idxmap types are not used anywhere. As we are
about to open-code all foreach macros for the maps in order to be able
to make the khash structure internal, removing these unused macros will
leave a few places less that need conversion.
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|
|
681c58cf
|
2018-11-21T11:21:02
|
|
cmake: enable warnings for unused functions
Ever since commit 823c0e9cc (Fix broken logic for attr cache invalidation,
2014-04-17), we have completely disabled warnings for unused functions. The only
comment that was added back then is about "annoying extra warnings" from Clang,
but in fact we shouldn't just ignore warnings about functions which aren't used
at all. Instead, the right thing would be to either only conditionally compile
functions that aren't used in all configurations or, alternatively, to remove
functions that aren't required at all.
As remaining instances of unused functions have been removed in the last two
commits, re-enable the warning.
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|
|
b2af13f2
|
2018-11-21T12:07:23
|
|
iterator: remove unused function `tree_iterator_entry_cmp`
The function `tree_iterator_entry_cmp` has been introduced in commit be30387e8
(iterators: refactored tree iterator, 2016-02-25), but in fact it has never been
used at all. Remove it to avoid unused function warnings as soon as we re-enable
"-Wunused-functions".
|
|
|
bbf9f5a7
|
2018-11-21T11:20:14
|
|
tests: path: only compile test_canonicalize on Win32 platforms
The function `test_canonicalize` is only used on Win32 platforms. It will thus
result in an unused function warning if these warnings are enabled and one is on
a platform different than Win32.
Fix the issue by only compiling in the function on Win32 platforms.
|
|
0836f069
|
2018-11-14T16:08:30
|
|
revwalk: Allow changing hide_cb
Since git_revwalk objects are encouraged to be reused, a public
interface for changing hide_cb is desirable.
|
|
|
c97d302d
|
2018-11-28T13:45:41
|
|
Merge pull request #4879 from libgit2/ethomson/defer_cert_cred_cb
Allow certificate and credential callbacks to decline to act
|
|
|
43cbe6b7
|
2018-11-28T13:36:47
|
|
config: fix adding files if their parent directory is a file
When we try to add a configuration file with `git_config_add_file_ondisk`, we
treat nonexisting files as empty. We do this by performing a stat call, ignoring
ENOENT errors. This works just fine in case the file or any of its parents
simply does not exist, but there is also the case where any of the parent
directories is not a directory, but a file. So e.g. trying to add a
configuration file "/dev/null/.gitconfig" will fail, as `errno` will be ENOTDIR
instead of ENOENT.
Catch ENOTDIR in addition to ENOENT to fix the issue. Add a test that verifies
we are able to add configuration files with such an invalid path file just fine.
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|
|
c3b427ba
|
2018-11-25T13:59:22
|
|
Merge pull request #4896 from csware/C4133
Fix warning C4133 incompatible types in MSVC
|
|
f0714daf
|
2018-11-25T13:36:29
|
|
Fix warning C4133 incompatible types in MSVC
Introduced in commit b433a22a979ae78c28c8b16f8c3487e2787cb73e.
Signed-off-by: Sven Strickroth <email@cs-ware.de>
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|
|
a2e6e0ea
|
2018-11-06T14:15:43
|
|
transport: allow cred/cert callbacks to return GIT_PASSTHROUGH
Allow credential and certificate checking callbacks to return
GIT_PASSTHROUGH, indicating that they do not want to act.
Introduce this to support in both the http and ssh callbacks.
Additionally, enable the same mechanism for certificate validation.
This is most useful to disambiguate any meaning in the publicly exposed
credential and certificate functions (`git_transport_smart_credentials`
and `git_transport_smart_certificate_check`) but it may be more
generally useful for callers to be able to defer back to libgit2.
|
|
|
0e3e832d
|
2018-11-21T13:30:01
|
|
Merge pull request #4884 from libgit2/ethomson/index_iterator
index: introduce git_index_iterator
|
|
|
94fce582
|
2018-11-21T10:27:59
|
|
Merge pull request #4894 from pks-t/pks/commit-author-oob
commit: fix out-of-bound reads when parsing truncated author fields
|
|
|
cb23c3ef
|
2018-11-21T10:54:29
|
|
commit: fix out-of-bound reads when parsing truncated author fields
While commit objects usually should have only one author field, our commit
parser actually handles the case where a commit has multiple author fields
because some tools that exist in the wild actually write them. Detection of
those additional author fields is done by using a simple `git__prefixcmp`,
checking whether the current line starts with the string "author ". In case
where we are handed a non-NUL-terminated string that ends directly after the
space, though, we may have an out-of-bounds read of one byte when trying to
compare the expected final NUL byte.
Fix the issue by using `git__prefixncmp` instead of `git_prefixcmp`.
Unfortunately, a test cannot be easily written to catch this case. While we
could test the last error message and verify that it didn't in fact fail parsing
a signature (because that would indicate that it has in fact tried to parse the
additional "author " field, which it shouldn't be able to detect in the first
place), this doesn't work as the next line needs to be the "committer" field,
which would error out with the same error message even if we hadn't done an
out-of-bounds read.
As objects read from the object database are always NUL terminated, this issue
cannot be triggered in normal code and thus it's not security critical.
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|
|
11d33df8
|
2018-11-18T23:39:43
|
|
Merge branch 'tiennou/fix/logallrefupdates-always'
|
|
e226ad8f
|
2018-11-17T17:55:10
|
|
refs: add support for core.logAllRefUpdates=always
Since we were not expecting this config entry to contain a string, we
would fail as soon as its (cached) value would be accessed. Hence,
provide some constants for the 4 states we use, and account for "always"
when we decide to reflog changes.
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|
|
646a94be
|
2018-11-18T23:15:56
|
|
Merge pull request #4847 from noahp/noahp/null-arg-fixes
tests: 🌀 address two null argument instances
|
|
|
5c213e29
|
2018-11-18T22:59:03
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Merge pull request #4875 from tiennou/fix/openssl-errors
Some OpenSSL issues
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0310749b
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2018-11-18T22:58:17
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Merge pull request #4892 from osener/patch-1
worktree: Expose git_worktree_add_init_options
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4ef2b889
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2018-11-18T22:56:28
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Merge pull request #4882 from kc8apf/include_port_in_host_header
transport/http: Include non-default ports in Host header
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4dcd4514
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2018-11-18T18:13:58
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worktree: Expose git_worktree_add_init_options
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7321cff0
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2018-11-15T09:17:51
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Merge pull request #4713 from libgit2/ethomson/win_symlinks
Support symlinks on Windows when core.symlinks=true
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8ee10098
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2018-11-06T13:10:30
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transport: see if cert/cred callbacks exist before calling them
Custom transports may want to ask libgit2 to invoke a configured
credential or certificate callback; however they likely do not know if a
callback was actually configured. Return a sentinal value
(GIT_PASSTHROUGH) if there is no callback configured instead of crashing.
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c358bbc5
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2018-11-12T17:22:47
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index: introduce git_index_iterator
Provide a public git_index_iterator API that is backed by an index
snapshot. This allows consumers to provide a stable iteration even
while manipulating the index during iteration.
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9189a66a
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2018-11-14T12:09:48
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Merge pull request #4886 from pks-t/pks/strntol-truncate-leading-sign
strntol: fix out-of-bounds reads when parsing numbers with leading sign
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4b84db6a
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2018-11-14T12:33:38
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patch_parse: remove unused function `parse_number`
The function `parse_number` was replaced by `git_parse_advance_digit`
which is provided by the parser interface in commit 252f2eeee (parse:
implement and use `git_parse_advance_digit`, 2017-07-14). As there are
no remaining callers, remove it.
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4209a512
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2018-11-14T12:04:42
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strntol: fix out-of-bounds reads when parsing numbers with leading sign
When parsing a number, we accept a leading plus or minus sign to return
a positive or negative number. When the parsed string has such a leading
sign, we set up a flag indicating that the number is negative and
advance the pointer to the next character in that string. This misses
updating the number of bytes in the string, though, which is why the
parser may later on do an out-of-bounds read.
Fix the issue by correctly updating both the pointer and the number of
remaining bytes. Furthermore, we need to check whether we actually have
any bytes left after having advanced the pointer, as otherwise the
auto-detection of the base may do an out-of-bonuds access. Add a test
that detects the out-of-bound read.
Note that this is not actually security critical. While there are a lot
of places where the function is called, all of these places are guarded
or irrelevant:
- commit list: this operates on objects from the ODB, which are always
NUL terminated any may thus not trigger the off-by-one OOB read.
- config: the configuration is NUL terminated.
- curl stream: user input is being parsed that is always NUL terminated
- index: the index is read via `git_futils_readbuffer`, which always NUL
terminates it.
- loose objects: used to parse the length from the object's header. As
we check previously that the buffer contains a NUL byte, this is safe.
- rebase: this parses numbers from the rebase instruction sheet. As the
rebase code uses `git_futils_readbuffer`, the buffer is always NUL
terminated.
- revparse: this parses a user provided buffer that is NUL terminated.
- signature: this parser the header information of objects. As objects
read from the ODB are always NUL terminated, this is a non-issue. The
constructor `git_signature_from_buffer` does not accept a length
parameter for the buffer, so the buffer needs to be NUL terminated, as
well.
- smart transport: the buffer that is parsed is NUL terminated
- tree cache: this parses the tree cache from the index extension. The
index itself is read via `git_futils_readbuffer`, which always NUL
terminates it.
- winhttp transport: user input is being parsed that is always NUL
terminated
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fd4e3b21
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2018-11-13T15:33:20
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Merge pull request #4885 from pks-t/pks/apply-test-fixups
apply: small fixups in the test suite
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cf83809b
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2018-11-13T14:26:26
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Merge pull request #4883 from pks-t/pks/signature-tz-oob
signature: fix out-of-bounds read when parsing timezone offset
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f127ce35
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2018-11-13T08:22:25
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tests: address two null argument instances
Handle two null argument cases that occur in the unit tests.
One is in library code, the other is in test code.
Detected by running unit tests with undefined behavior sanitizer:
```bash
# build
mkdir build && cd build
cmake -DBUILD_CLAR=ON -DCMAKE_C_FLAGS="-fsanitize=address \
-fsanitize=undefined -fstack-usage -static-libasan" ..
cmake --build .
# run with asan
ASAN_OPTIONS="allocator_may_return_null=1" ./libgit2_clar
...
............../libgit2/src/apply.c:316:3: runtime error: null pointer \
passed as argument 1, which is declared to never be null
...................../libgit2/tests/apply/fromfile.c:46:3: runtime \
error: null pointer passed as argument 1, which is declared to never be null
```
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afc64bcd
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2018-11-13T14:13:40
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tests: apply: fix reference to deprecated `git_buf_free`
Since commit 56ffdfc61 (buffer: deprecate `git_buf_free` in favor of
`git_buf_dispose`, 2018-02-08), the function `git_buf_free` is
deprecated and shall not be used anymore. As part of the new apply
framework that has been cooking for quite some time some new references
have been introduced to that deprecated function. Replace them with
calls to `git_buf_dispose`.
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fe215153
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2018-11-13T14:08:49
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tests: apply: fix missing `cl_git_pass` wrappers
Some function calls in the new "apply" test suite were missing the
checks whether they succeeded as expected. Fix this by adding the
missing `cl_git_pass` wrappers.
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20cb30b6
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2018-11-13T13:40:17
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Merge pull request #4667 from tiennou/feature/remote-create-api
Remote creation API
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28239be3
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2018-11-13T13:27:41
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Merge pull request #4818 from pks-t/pks/index-collision
Index collision fixes
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11fbead8
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2018-11-11T16:40:56
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Merge pull request #4705 from libgit2/ethomson/apply
Patch (diff) application
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2f5f3cfd
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2018-11-10T11:07:01
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Merge pull request #4880 from libgit2/ethomson/smart_transport_url
smart transport: only clear url on hard reset (regression)
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83b35181
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2018-10-19T10:54:38
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transport/http: Include non-default ports in Host header
When the port is omitted, the server assumes the default port for the
service is used (see
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Host). In
cases where the client provided a non-default port, it should be passed
along.
This hasn't been an issue so far as the git protocol doesn't include
server-generated URIs. I encountered this when implementing Rust
registry support for Sonatype Nexus. Rust's registry uses a git
repository for the package index. Clients look at a file in the root of
the package index to find the base URL for downloading the packages.
Sonatype Nexus looks at the incoming HTTP request (Host header and URL)
to determine the client-facing URL base as it may be running behind a
load balancer or reverse proxy. This client-facing URL base is then used
to construct the package download base URL. When libgit2 fetches the
index from Nexus on a non-default port, Nexus trusts the incorrect Host
header and generates an incorrect package download base URL.
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58b60fcc
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2018-11-08T09:31:28
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netops: add method to return default http port for a connection
Constant strings and logic for HTTP(S) default ports were starting to be
spread throughout netops.c. Instead of duplicating this again to
determine if a Host header should include the port, move the default
port constants and logic into an internal method in netops.{c,h}.
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52f859fd
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2018-11-09T19:32:08
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signature: fix out-of-bounds read when parsing timezone offset
When parsing a signature's timezone offset, we first check whether there
is a timezone at all by verifying that there are still bytes left to
read following the time itself. The check thus looks like `time_end + 1
< buffer_end`, which is actually correct in this case. After setting the
timezone's start pointer to that location, we compute the remaining
bytes by using the formula `buffer_end - tz_start + 1`, re-using the
previous `time_end + 1`. But this is in fact missing the braces around
`(tz_start + 1)`, thus leading to an overestimation of the remaining
bytes by a length of two. In case of a non-NUL terminated buffer, this
will result in an overflow.
The function `git_signature__parse` is only used in two locations. First
is `git_signature_from_buffer`, which only accepts a string without a
length. The string thus necessarily has to be NUL terminated and cannot
trigger the issue.
The other function is `git_commit__parse_raw`, which can in fact trigger
the error as it may receive non-NUL terminated commit data. But as
objects read from the ODB are always NUL-terminated by us as a
cautionary measure, it cannot trigger the issue either.
In other words, this error does not have any impact on security.
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9ad96367
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2018-11-07T15:31:21
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smart transport: only clear url on hard reset
After creating a transport for a server, we expect to be able to call
`connect`, then invoke subsequent `action` calls. We provide the URL to
these `action` calls, although our built-in transports happen to ignore
it since they've already parsed it into an internal format that they
intend to use (`gitno_connection_data`).
In ca2eb4608243162a13c427e74526b6422d5a6659, we began clearing the URL
field after a connection, meaning that subsequent calls to transport
`action` callbacks would get a NULL URL, which went undetected since the
builtin transports ignore the URL when they're already connected
(instead of re-parsing it into an internal format).
Downstream custom transport implementations (eg, LibGit2Sharp) did
notice this change, however.
Since `reset_stream` is called even when we're not closing the
subtransport, update to only clear the URL when we're closing the
subtransport. This ensures that `action` calls will get the correct URL
information even after a connection.
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fa7aba70
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2018-11-07T12:23:14
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Merge pull request #4871 from pks-t/pks/tree-parsing-fixes
Tree parsing fixes
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