Sockets may never receive notification of some link errors,
causing "git fetch" or similar processes to hang forever.
Enabling keepalive messages allows hung processes to error out
after a few minutes/hours depending on the keepalive settings of
the system.
This is a problem noticed when running non-interactive
cronjobs to mirror repositories using "git fetch".
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change check_ref_format() to take a flags argument that indicates what
is acceptable in the reference name (analogous to "git
check-ref-format"'s "--allow-onelevel" and "--refspec-pattern"). This
is more convenient for callers and also fixes a failure in the test
suite (and likely elsewhere in the code) by enabling "onelevel" and
"refspec-pattern" to be allowed independently of each other.
Also rename check_ref_format() to check_refname_format() to make it
obvious that it deals with refnames rather than references themselves.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 63a995b (Do not log unless all connect() attempts fail), a
mechanism to only log connection errors if all attempts failed
was introduced for the IPv6 code-path, but not for the IPv4 one.
Introduce a matching mechanism so IPv4-users also benefit from
this noise-reduction.
Move the call to socket after filling in sa, to make it more
apparent that errno can't change in between.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In ba50532, the variable 'cnt' was added to both the IPv6 and the
IPv4 version of git_tcp_connect_sock, intended to identify which
network adapter the connection failed on. But in the IPv6 version,
the variable was never increased, leaving it constantly at zero.
This behaviour isn't very useful, so let's fix it by increasing
the variable at every loop-iteration.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
IPv6 hosts are often unreachable on the primarily IPv4 Internet and
therefore we shouldn't print an error if there are still other hosts we
can try to connect() to. This helps "git fetch --quiet" stay quiet.
Signed-off-by: Dave Zarzycki <zarzycki@apple.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
They might care because they want to do a half-duplex close.
With pipes, that means simply closing the output descriptor;
with a socket, you must actually call shutdown.
Instead of exposing the magic no_fork child_process struct,
let's encapsulate the test in a function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The git_connect function returns two ends of a pipe for
talking with a remote, plus a struct child_process
representing the other end of the pipe. If we have a direct
socket connection, then this points to a special "no_fork"
child process.
The code path for doing git-over-pipes or git-over-ssh sets
up this child process to point to the child git command or
the ssh process. When we call finish_connect eventually, we
check wait() on the command and report its return value.
The code path for git://, on the other hand, always sets it
to no_fork. In the case of a direct TCP connection, this
makes sense; we have no child process. But in the case of a
proxy command (configured by core.gitproxy), we do have a
child process, but we throw away its pid, and therefore
ignore its return code.
Instead, let's keep that information in the proxy case, and
respect its return code, which can help catch some errors
(though depending on your proxy command, it will be errors
reported by the proxy command itself, and not propagated
from git commands. Still, it is probably better to propagate
such errors than to ignore them).
It also means that the child_process field can reliably be
used to determine whether the returned descriptors are
actually a full-duplex socket, which means we should be
using shutdown() instead of a simple close.
Signed-off-by: Jeff King <peff@peff.net>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The result of git_getpass() is used without checking for NULL, so let's
just die() instead of returning NULL.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Modify handling of the 'core.askpass' option so that it has the same effect as
GIT_ASKPASS also if SSH_ASKPASS is set.
Signed-off-by: Knut Franke <k.franke@science-computing.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Setting this option has the same effect as setting the environment variable
'GIT_ASKPASS'.
Signed-off-by: Knut Franke <k.franke@science-computing.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Without this patch at least IBM VisualAge C 5.0 (I have 5.0.2) on AIX
5.1 fails to compile git.
enum style is inconsistent already, with some enums declared on one
line, some over 3 lines with the enum values all on the middle line,
sometimes with 1 enum value per line... and independently of that the
trailing comma is sometimes present and other times absent, often
mixing with/without trailing comma styles in a single file, and
sometimes in consecutive enum declarations.
Clearly, omitting the comma is the more portable style, and this patch
changes all enum declarations to use the portable omitted dangling
comma style consistently.
Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We generally treat these as equivalent to "/path/to/repo"
and "host:path_to_repo" respectively. However, they are URLs
and as such may be percent-encoded. The current code simply
uses them as-is without any decoding.
With this patch, we will now percent-decode any file:// or
ssh:// url (or ssh+git, git+ssh, etc) at the transport
layer. We continue to treat plain paths and "host:path"
syntax literally.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git tries to read a password from the terminal in imap-send and
when talking to a http server that requires authentication.
When a GUI is driving git, however, the end user is not paying
attention to the terminal (there may not even be a terminal).
GUI would appear to hang forever.
Fix this problem by allowing a password-retrieving command
to be specified in GIT_ASKPASS
Signed-off-by: Frank Li <lznuaa@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move the list of GIT_* environment variables that are local to a
repository into a static list in environment.c, as it is also
useful elsewhere. Also add the missing GIT_CONFIG variable to the
list.
Make it easy to use the list both by NULL-termination and by size;
the latter (excluding the terminating NULL) is stored in the
local_repo_env_size define.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The following functions:
git_tcp_connect_sock (IPV6 version)
git_tcp_connect_sock (no IPV6 version),
git_proxy_connect
have common block of code. Move it to a new function 'get_host_and_port'
Signed-off-by: Michael Lukashov <michael.lukashov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow using "["<host>"]":<port> and "["<host>"]" notations in git://
host addresses. This is needed to be able to connect to addresses
that contain ':' (e.g. numeric IPv6 addresses). Also send the host
header []-wrapped so it can actually be parsed by remote end.
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a followup to ac0ba18 (run-command: convert simple callsites to
use_shell, 2009-12-30), for consistency.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This has the same effect as --no-replace-objects option; git ignores the
replace refs. When --no-replace-objects option is passed to git, this
environment variable is set to "1" and exported to subprocesses in order
to propagate the same setting.
It is useful for example for scripts, as the git commands used in them can
now be aware that they must not read replace refs.
Tested-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In 41cb7488 Linus moved this function to connect.c for reuse inside
of the git-clone-pack command. That was 2005, but in 2006 Junio
retired git-clone-pack in commit efc7fa53. Since then the only
caller has been fetch-pack. Since this ACK/NAK exchange is only
used by the fetch-pack/upload-pack protocol we should move it back
to be a private detail of fetch-pack.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The majority of code in core git appears to use a single
space after if/for/while. This is an attempt to bring more
code to this standard. These are entirely cosmetic changes.
Signed-off-by: Brian Gianforcaro <b.gianfo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a few remaining ones, but this fixes the trivial ones. It boils
down to two main issues that sparse complains about:
- warning: Using plain integer as NULL pointer
Sparse doesn't like you using '0' instead of 'NULL'. For various good
reasons, not the least of which is just the visual confusion. A NULL
pointer is not an integer, and that whole "0 works as NULL" is a
historical accident and not very pretty.
A few of these remain: zlib is a total mess, and Z_NULL is just a 0.
I didn't touch those.
- warning: symbol 'xyz' was not declared. Should it be static?
Sparse wants to see declarations for any functions you export. A lack
of a declaration tends to mean that you should either add one, or you
should mark the function 'static' to show that it's in file scope.
A few of these remain: I only did the ones that should obviously just
be made static.
That 'wt_status_submodule_summary' one is debatable. It has a few related
flags (like 'wt_status_use_color') which _are_ declared, and are used by
builtin-commit.c. So maybe we'd like to export it at some point, but it's
not declared now, and not used outside of that file, so 'static' it is in
this patch.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 1.4.4.5 (49ba83fb67 "Add virtualization support to git-daemon")
git daemon enters an infinite loop and never terminates if a client
hides any extra arguments in the initial request line which is not
exactly "\0host=blah\0".
Since that change, a client must never insert additional extra
arguments, or attempt to use any argument other than "host=", as
any daemon will get stuck parsing the request line and will never
complete the request.
Since the client can't tell if the daemon is patched or not, it
is not possible to know if additional extra args might actually be
able to be safely requested.
If we ever need to extend the git daemon protocol to support a new
feature, we may have to do something like this to the exchange:
# If both support git:// v2
#
C: 000cgit://v2
S: 0010ok host user
C: 0018host git.kernel.org
C: 0027git-upload-pack /pub/linux-2.6.git
S: ...git-upload-pack header...
# If client supports git:// v2, server does not:
#
C: 000cgit://v2
S: <EOF>
C: 003bgit-upload-pack /pub/linux-2.6.git\0host=git.kernel.org\0
S: ...git-upload-pack header...
This requires the client to create two TCP connections to talk to
an older git daemon, however all daemons since the introduction of
daemon.c will safely reject the unknown "git://v2" command request,
so the client can quite easily determine the server supports an
older protocol.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
OpenSSH uses -p to specify custom ports, while PuTTY plink and
TortoisePlink use -P. Git now detects if plink is in GIT_SSH and
modify its flags as necessary.
We call plink with -batch, so that it will error out with an error
message instead of waiting for user input. As reported in msysGit
issue 96, plink wants to interact with the user asking if a host
key should be accepted, but this just blocks the terminal, since
plink tries to get the answer from stdin. However, stdin is
already connected to Git that wants to send input to the remote
command.
But we do not pass -batch to TortoisePlink, because TortoisePlink
uses a GUI to communicate with the user, and it does not understand
-batch.
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
inet_ntop is not protocol independent.
getnameinfo(3) is part of POSIX and is available when getaddrinfo(3) is.
This code is only compiled when NO_IPV6 isn't defined.
The old method was buggy anyway, not every ipv6 address was converted
properly because the buffer (addr) was too small.
Signed-off-by: Benjamin Kramer <benny.kra@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These variables were always overwritten or the assigned
value was unused:
builtin-diff-tree.c::cmd_diff_tree(): nr_sha1
builtin-for-each-ref.c::opt_parse_sort(): sort_tail
builtin-mailinfo.c::decode_header_bq(): in
builtin-shortlog.c::insert_one_record(): len
connect.c::git_connect(): path
imap-send.c::v_issue_imap_cmd(): n
pretty.c::pp_user_info(): filler
remote::parse_refspec_internal(): llen
Signed-off-by: Benjamin Kramer <benny.kra@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since ef90d6d (Provide git_config with a callback-data parameter,
2008-05-14), git_config() takes a callback data pointer that can be
used to pass extra parameters to the parsing function. The codepath
to parse configuration variables related to git proxy predates this
facility and used a pair of file scope static variables instead.
This patch removes the need for these global variables by passing the
name of the host we are trying to access as the callback data.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
LF at the end of format strings given to die() is redundant because
die already adds one on its own.
Signed-off-by: Alexander Potashev <aspotashev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In addition to checking if the provided port is numeric, also check
that the string isn't empty and that the port number is within the
valid range. Incidentally, this silences a compiler warning about
ignoring strtol's return value.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The current behavior of git-daemon is to simply close the connection on
any error condition. This leaves the client without any information as
to the cause of the failed fetch/push/etc.
This patch allows get_remote_heads to accept a line prefixed with "ERR"
that it can display to the user in an informative fashion. Once clients
can understand this ERR line, git-daemon can be made to properly report
"repository not found", "permission denied", or other errors.
Example
S: ERR No matching repository.
C: fatal: remote error: No matching repository.
Signed-off-by: Tom Preston-Werner <tom@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
With all calls to alloc_ref() gone, we can remove it and then we're free
to give alloc_ref_from_str() the shorter name. It's a much nicer
interface, as the callers always need to have a name string when they
allocate a ref anyway and don't need to calculate and pass its length+1
any more.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace pairs of alloc_ref() and strcpy() with alloc_ref_from_str(),
simplifying the code.
In connect.c, also a pair of alloc_ref() and memcpy() is replaced --
the additional cost of a strlen() call should not have too much of an
impact. Consistency and simplicity are more important.
In remote.c, the code was allocating 11 bytes more than needed for
the name part, but I couldn't see them being used for anything.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git push" enhancement allows the receiving end to report not only its own
refs but refs in repositories it borrows from via the alternate object
store mechanism. By telling the sender that objects reachable from these
extra refs are already complete in the receiving end, the number of
objects that need to be transfered can be cut down.
These entries are sent over the wire with string ".have", instead of the
actual names of the refs. This string was chosen so that they are ignored
by older programs at the sending end. If we sent some random but valid
looking refnames for these entries, "matching refs" rule (triggered when
running "git push" without explicit refspecs, where the sender learns what
refs the receiver has, and updates only the ones with the names of the
refs the sender also has) and "delete missing" rule (triggered when "git
push --mirror" is used, where the sender tells the receiver to delete the
refs it itself does not have) would try to update/delete them, which is
not what we want.
This prepares the send-pack (and "push" that runs native protocol) to
accept extended existing ref information and make use of it. The ".have"
entries are excluded from ref matching rules, and are exempt from deletion
rule while pushing with --mirror option, but are still used for pack
generation purposes by providing more "bottom" range commits.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a mechanical conversion of all '*.c' files with:
s/((?:die|error|warning)\("git)-(\S+:)/$1 $2/;
The result was manually inspected and no false positive was found.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If on Windows a path is specified as C:/path, then this is also a valid
SSH URL. To disambiguate between the two interpretations we take an URL
that looks like a path with a drive letter as a local URL.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
git_config() only had a function parameter, but no callback data
parameter. This assumes that all callback functions only modify
global variables.
With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This change removes all obvious useless if-before-free tests.
E.g., it replaces code like this:
if (some_expression)
free (some_expression);
with the now-equivalent:
free (some_expression);
It is equivalent not just because POSIX has required free(NULL)
to work for a long time, but simply because it has worked for
so long that no reasonable porting target fails the test.
Here's some evidence from nearly 1.5 years ago:
http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html
FYI, the change below was prepared by running the following:
git ls-files -z | xargs -0 \
perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s'
Note however, that it doesn't handle brace-enclosed blocks like
"if (x) { free (x); }". But that's ok, since there were none like
that in git sources.
Beware: if you do use the above snippet, note that it can
produce syntactically invalid C code. That happens when the
affected "if"-statement has a matching "else".
E.g., it would transform this
if (x)
free (x);
else
foo ();
into this:
free (x);
else
foo ();
There were none of those here, either.
If you're interested in automating detection of the useless
tests, you might like the useless-if-before-free script in gnulib:
[it *does* detect brace-enclosed free statements, and has a --name=S
option to make it detect free-like functions with different names]
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free
Addendum:
Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In ba227857(Reduce the number of connects when fetching), we checked
the return value of git_connect() to see if the connection was
successful.
However, for the git:// protocol, there is no need to have another
process, so the return value was NULL.
Now, it makes sense to assume the rule that git_connect() will return
NULL if it fails (at the moment, it die()s if it fails), so return
a dummy child process.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The list of remote refs in struct transport should be const, because
builtin-fetch will get confused if it changes.
The url in git_connect should be const (and work on a copy) instead of
requiring the caller to copy it.
match_refs doesn't modify the refspecs it gets.
get_fetch_map and get_remote_ref don't change the list they get.
Allow transport get_refs_list methods to modify the struct transport.
Add a function to copy a list of refs, when a function needs a mutable
copy of a const list.
Add a function to check the type of a ref, as per the code in connect.c
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The child process handling is delegated to start_command() and
finish_command().
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This prepares the API of git_connect() and finish_connect() to operate on
a struct child_process. Currently, we just use that object as a placeholder
for the pid that we used to return. A follow-up patch will change the
implementation of git_connect() and finish_connect() to make full use
of the object.
Old code had early-return-on-error checks at the calling sites of
git_connect(), but since git_connect() dies on errors anyway, these checks
were removed.
[sp: Corrected style nit of "conn == NULL" to "!conn"]
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Currently alloc_ref() expects the length of the refname plus 1
as its parameter, prepares that much space and returns a "ref"
structure for the caller to fill the refname. One caller in
transport.c::get_refs_from_bundle() however allocated one byte
less.
It may be a good idea to change the calling convention to give
alloc_ref() the length of the refname, but that clean-up can be
done in a separate patch. This patch only fixes the bug and
makes all callers consistent.
There was also one overallocation in connect.c, which would not
hurt but was wasteful. This patch fixes it as well.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* sq_quote_buf is made public, and works on a strbuf.
* sq_quote_argv also works on a strbuf.
* make sq_quote_argv take a "maxlen" argument to check the buffer won't grow
too big.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow port specification in ssh:// URLs in the
usual notation:
ssh://[user@]host.domain[:<port>]/<path>
This allows git to be used over ssh-tunneling
networks.
Signed-off-by: Luben Tuikov <ltuikov@yahoo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We might make it something like: "if you use an url, we don't default to
local", so the difference would be that
git clone file:///directory/to/repo
would work the way it does now, but
git clone /directory/to/repo
would default to "-l" behaviour. That kind of would make sense (and should
be easy to implement.
This adds support for "file://" URL to underlying connect
codepath to make it happen.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of open-coding allocation wherever it happens, have a function.
Also, add a function to free a list of refs, which we currently never
actually do.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Randal L. Schwartz noticed compilation problems on SunOS, which made
me look at the code again. The thing is, h_errno is not used by
connect(2), it is only for functions from netdb.h, like gethostbyname.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This uses "git-apply --whitespace=strip" to fix whitespace errors that have
crept in to our source files over time. There are a few files that need
to have trailing whitespaces (most notably, test vectors). The results
still passes the test, and build result in Documentation/ area is unchanged.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Eric Wong