The URL to a repository http-push and http-fetch takes should
have a trailing slash.  Instead of failing the request, add it
ourselves before attempting such a request.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The first thing http-push does is a PROPFIND to see if the other
end supports locking.  The failure message we give is always
reported as "no DAV locking support at the remote repository",
regardless of the reason why we ended up not finding the locking
support on the other end.

This moves the code to report "no DAV locking support" down the
codepath so that the message is issued only when we successfully
get a response to PROPFIND and the other end say it does not
support locking.  Other failures, such as connectivity glitches
and credential mismatches, have their own error message issued
and we will not issue "no DAV locking" error (we do not even
know if the remote end supports it).
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Failing instead of silently not updating remote refs makes the things
clearer for the user when trying to push on a repository while another
person do (or while a dandling locks are waiting for a 10 minutes
timeout).

When silently not updating remote refs, the user does not even know
that git has pushed the objects but leaved the refs as they were
before (e.g. a new bunch of commits on branch "master" is uploaded,
however the branch by itsel still points on the previous head commit).
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Releasing webdav lock even if push fails because of bad (or no)
reference on command line.

To reproduce the issue that this patch fixes, prepare a test repository
availlable over http+webdav, say at http://myhost/myrepo.git/

Then:

  $ git clone http://myhost/myrepo.git/
  $ cd myrepo
  $ git push http
  Fetching remote heads...
    refs/
    refs/heads/
    refs/tags/
  No refs in common and none specified; doing nothing.
  $ git push http
  Fetching remote heads...
    refs/
    refs/heads/
    refs/tags/
  No refs in common and none specified; doing nothing.
  $

Finally, you look at the web server logs, and will find one LOCK query
and no UNLOCK query, of course the second one will be in 423 return
code instead of 200:

1.2.3.4 - gb [19/Jan/2008:14:24:56 +0100] "LOCK /myrepo.git/info/refs HTTP/1.1" 200 465
(...)
1.2.3.4 - gb [19/Jan/2008:14:25:10 +0100] "LOCK /myrepo.git/info/refs HTTP/1.1" 423 363

With this patch, there would have be two UNLOCKs in addition of the LOCKs

From the user's point of view:

- If you realize that you should have typed e.g. "git push http
  master" instead of "git push http", you will have to wait for 10
  minutes for the lock to expire by its own.

- Furthermore, if somebody else is dumb enough to type "git push http"
  while you need to push "master" branch, then you'll need too to wait
  for 10 minutes too.
Signed-off-by: NGr.ANigoire Barbier <gb@gbarbier.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Make http-push always fail when not compiled with USE_CURL_MULTI, since
otherwise it corrupts the remote repository (and then fails anyway).
Signed-off-by: NGrégoire Barbier <gb@gbarbier.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Make the necessary changes to be ok with their difference, and rename the
function http_fetch_ref.
Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Also, replace whitespaces with tabs in some places
Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

It appears that despite being initialized, it was never used.
Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When a downloaded ref doesn't contain a sha1, the error message displays
a random sha1 because of uninitialized memory. This happens when cloning
a repository that is already a clone of another one, in which case
refs/remotes/origin/HEAD is a symref.
Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

XML_Parser were never freed. While at it, move the parser initialization to
right before it is needed.
Signed-off-by: NMike Hommey <mh@glandium.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When we fail to open a temporary file to be renamed to something else,
we reported the final filename, not the temporary file we failed to
open.
Signed-off-by: NAndré Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Existing "git push --all" is almost perfect for backing up to
another repository, except that "--all" only means "all
branches" in modern git, and it does not delete old branches and
tags that exist at the back-up repository that you have removed
from your local repository.

This teaches "git-send-pack" a new "--mirror" option.  The
difference from the "--all" option are that (1) it sends all
refs, not just branches, and (2) it deletes old refs you no
longer have on the local side from the remote side.

Original patch by Junio C Hamano.
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The term "ancestor" is a bit more intuitive (and more consistent with
the documentation) than the term "strict subset".

Also, remove superfluous "ref", capitalize, and add some carriage
returns, changing:

    error: remote 'refs/heads/master' is not a strict subset of local ref 'refs/heads/master'. maybe you are not up-to-date and need to pull first?
    error: failed to push to 'ssh://linux-nfs.org/~bfields/exports/git.git'

to:

    error: remote 'refs/heads/master' is not an ancestor of
    local 'refs/heads/master'.
    Maybe you are not up-to-date and need to pull first?
    error: failed to push to 'ssh://linux-nfs.org/~bfields/exports/git.git'
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NJunio 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: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

If the end-user requested a dry-run push we need to pass that flag
over to http-push and additionally make sure it does not actually
upload any changes to the remote server.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>

This turns the extern functions to be provided by the backend into a
struct of pointers, renames the functions to be more
namespace-friendly, and updates http-fetch to this interface. It
removes the unused include from http-push.c. It makes git-http-fetch a
builtin (with the implementation a separate file, accessible
directly).
Signed-off-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This eliminates the last function provided by the code using http.h as
a global symbol, so it should be possible to have multiple programs
using http.h in the same executable, and it also adds an argument to
that callback, so that info can be passed into the callback without
being global.
Signed-off-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This removes all of the boilerplate and http-internal stuff from
fill_active_slots() and makes it easy to turn into a callback.
Signed-off-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NPierre Habouzit <madcoder@debian.org>
Signed-off-by: NJunio 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: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NDaniel Barkalow <barkalow@iabervon.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Signed-off-by: NJunio C Hamano <junkio@cox.net>

This removes slightly more lines than it adds, but the real reason for
doing this is that future optimizations will require more setup of the
tree descriptor, and so we want to do it in one place.

Also renamed the "desc.buf" field to "desc.buffer" just to trigger
compiler errors for old-style manual initializations, making sure I
didn't miss anything.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Use of strlcpy() are wrong, as the source buffer at these
locations may not be NUL-terminated.

Starting from offset 11 might have been good back when it was
only used for updating "refs/heads/*", but it is used to update
"info/refs" and "refs/tags/*" as well.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

We currently have two parallel notation for dealing with object types
in the code: a string and a numerical value.  One of them is obviously
redundent, and the most used one requires more stack space and a bunch
of strcmp() all over the place.

This is an initial step for the removal of the version using a char array
found in object reading code paths.  The patch is unfortunately large but
there is no sane way to split it in smaller parts without breaking the
system.
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

There were instances of strncmp() that were formatted improperly
(e.g. whitespace around parameter before closing parenthesis)
that caused the earlier mechanical conversion step to miss
them.  This step cleans them up.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily.  Leftover from this will be fixed in a separate step, including
idiotic conversions like

    if (!strncmp("foo", arg, 3))

  =>

    if (!(-prefixcmp(arg, "foo")))

This was done by using this script in px.perl

   #!/usr/bin/perl -i.bak -p
   if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
           s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
   }
   if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
           s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
   }

and running:

   $ git grep -l strncmp -- '*.c' | xargs perl px.perl
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Back when only handful commands that created commit and tag were
the only users of committer identity information, it made sense
to explicitly call setup_ident() to pre-fill the default value
from the gecos information.  But it is much simpler for programs
to make the call automatic when get_ident() is called these days,
since many more programs want to use the information when updating
the reflog.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

My sp/mmap changes to pack-check.c modified the function such that
it expects packed_git.pack_size to be populated with the total
bytecount of the packfile by the caller.

But that isn't the case for packs obtained by git-http-fetch as
pack_size was not initialized before being accessed.  This caused
verify_pack to think it had 2^32-21 bytes available when the
downloaded pack perhaps was only 305 bytes in length.  The use_pack
function then later dies with "offset beyond end of packfile"
when computing the overall file checksum.
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

We have a number of badly checked write() calls.  Often we are
expecting write() to write exactly the size we requested or fail,
this fails to handle interrupts or short writes.  Switch to using
the new write_in_full().  Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xwrite().

Note, the changes to config handling are much larger and handled
in the next patch in the sequence.
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

We have a number of badly checked read() calls.  Often we are
expecting read() to read exactly the size we requested or fail, this
fails to handle interrupts or short reads.  Add a read_in_full()
providing those semantics.  Otherwise we at a minimum need to check
for EINTR and EAGAIN, where this is appropriate use xread().
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This adds a "int *flag" parameter to resolve_ref() and makes
for_each_ref() family to call callback function with an extra
"int flag" parameter.  They are used to give two bits of
information (REF_ISSYMREF and REF_ISPACKED) about the ref.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

This is a long overdue fix to the API for for_each_ref() family
of functions.  It allows the callers to specify a callback data
pointer, so that the caller does not have to use static
variables to communicate with the callback funciton.

The updated for_each_ref() family takes a function of type

	int (*fn)(const char *, const unsigned char *, void *)

and a void pointer as parameters, and calls the function with
the name of the ref and its SHA-1 with the caller-supplied void
pointer as parameters.

The commit updates two callers, builtin-name-rev.c and
builtin-pack-refs.c as an example.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Like xmalloc and xrealloc xstrdup dies with a useful message if
the native strdup() implementation returns NULL rather than a
valid pointer.

I just tried to use xstrdup in new code and found it to be missing.
However I expected it to be present as xmalloc and xrealloc are
already commonly used throughout the code.

[jc: removed the part that deals with last_XXX, which I am
 finding more and more dubious these days.]
Signed-off-by: NShawn O. Pearce <spearce@spearce.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Jonas noticed some places say "if (X) free(X)" which is totally
unnecessary.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

builtin-tar-tree.c::git_tar_config() and http-push.c::add_one_object()
are not used outside their own files.
Signed-off-by: NPierre Habouzit <madcoder@debian.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>