In add_ref(), verify that the refname is formatted correctly before
adding it to the ref_list. Here we have to allow refname components
that start with ".", since (for example) the remote protocol uses
synthetic reference name ".have". So add a new REFNAME_DOT_COMPONENT
flag that can be passed to check_refname_format() to allow leading
dots.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Record information about resolve_ref(), hard-won via reverse
engineering, in a comment for future spelunkers.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the SHA1 in a reference file is not terminated by a space or
end-of-file, consider it malformed and emit a warning.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While resolving references, if a reference is found that is in an
unrecognized format, emit a warning (and then fail, as before).
Wouldn't *you* want to know?
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
read_ref() can (and in test t5800, actually *does*) return NULL.
Don't pass the NULL along to read_ref(). Coincidentally, this mistake
didn't make resolve_ref() blow up, but upcoming changes to
resolve_ref() will make it less forgiving.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Emit a warning and fail if a symbolic reference refers to an
incorrectly-formatted refname.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Making it a function and giving it a name makes the code clearer. I
also have a strong suspicion that the function will find other uses in
the future.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Immediately strip off trailing spaces and null-terminate the string
holding the contents of the reference file; this allows the use of
string functions and avoids the need to keep separate track of the
string's length. (get_sha1_hex() fails automatically if the string is
too short.)
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Terminate the link content string one step earlier, allowing
prefixcmp() to be used instead of the less clear memcmp().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Previously the failure came later, after a few steps in which the
length was treated like the actual length of a string. Even though
the old code gave the same answers, it was somewhat misleading.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since much of the infrastructure does not work correctly with
unnormalized refnames, change check_refname_format() to reject them.
Similarly, change "git check-ref-format" to reject unnormalized
refnames by default. But add an option --normalize, which causes "git
check-ref-format" to normalize the refname before checking its format,
and print the normalized refname. This is exactly the behavior of the
old --print option, which is retained but deprecated.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Soon we will make printing independent of collapsing.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This will make upcoming changes a tiny bit easier.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allowing any refname component to end with ".lock" is looking for
trouble; for example,
$ git br foo.lock/bar
$ git br foo
fatal: Unable to create '[...]/.git/refs/heads/foo.lock': File exists.
Therefore, do not allow any refname component to end with ".lock".
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Among other things, extract a function check_refname_component().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
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>
Previously most bad characters were indicated by returning 1, but "*"
was special-cased to return 2 instead of 1. One caller examined the
return value to see whether the special case occurred.
But it is easier (to document and understand) for bad_ref_char()
simply to return a boolean value, treating "*" like any other bad
character. Special-case the handling of "*" (which only occurs in
very specific circumstances) at the caller. The resulting calling
code thereby also becomes more transparent.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Also add tests of the new options. (Actually, one big reason to add
the new options is to make it easy to test check_ref_format(), though
the options should also be useful to other scripts.)
Interpret the result of check_ref_format() based on which types of
refnames are allowed. However, because check_ref_format() can only
return a single value, one test case is still broken. Specifically,
the case "git check-ref-format --onelevel '*'" incorrectly succeeds
because check_ref_format() returns CHECK_REF_FORMAT_ONELEVEL for this
refname even though the refname is also CHECK_REF_FORMAT_WILDCARD.
The type of check that leads to this failure is used elsewhere in
"real" code and could lead to bugs; it will be fixed over the next few
commits.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The new tests reflect the status quo. Soon the rule for "*.lock" in
refname components will be tightened up.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Previously, get_sha1_hex() would read one character past the end of a
null-terminated string whose strlen was an even number less than 40.
Although the function correctly returned -1 in these cases, the extra
memory access might have been to uninitialized (or even, conceivably,
unallocated) memory.
Add a check to avoid reading past the end of a string.
This problem was discovered by Thomas Rast <trast@student.ethz.ch>
using valgrind.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few more parts of this document is stale that needs updating
to reflect the reality, but I do not regularly rebase topics that
are only in "pu" anymore, which may be noteworthy for a commit.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This reverts commit ffa69e61d3, reversing
changes made to 4a13c4d148.
Adding a new command line option to receive-pack and feed it from
send-pack is not an acceptable way to add features, as there is no
guarantee that your updated send-pack will be talking to updated
receive-pack. New features need to be added via the capability mechanism
negotiated over the protocol.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* tr/maint-format-patch-empty-output:
Document negated forms of format-patch --to --cc --add-headers
t4014: "no-add-headers" is actually called "no-add-header"
t4014: invoke format-patch with --stdout where intended
t4014: check for empty files from git format-patch --stdout
* fk/use-kwset-pickaxe-grep-f:
obstack: Fix portability issues
Use kwset in grep
Use kwset in pickaxe
Adapt the kwset code to Git
Add string search routines from GNU grep
Add obstack.[ch] from EGLIBC 2.10
* en/merge-recursive-2: (57 commits)
merge-recursive: Don't re-sort a list whose order we depend upon
merge-recursive: Fix virtual merge base for rename/rename(1to2)/add-dest
t6036: criss-cross + rename/rename(1to2)/add-dest + simple modify
merge-recursive: Avoid unnecessary file rewrites
t6022: Additional tests checking for unnecessary updates of files
merge-recursive: Fix spurious 'refusing to lose untracked file...' messages
t6022: Add testcase for spurious "refusing to lose untracked" messages
t3030: fix accidental success in symlink rename
merge-recursive: Fix working copy handling for rename/rename/add/add
merge-recursive: add handling for rename/rename/add-dest/add-dest
merge-recursive: Have conflict_rename_delete reuse modify/delete code
merge-recursive: Make modify/delete handling code reusable
merge-recursive: Consider modifications in rename/rename(2to1) conflicts
merge-recursive: Create function for merging with branchname:file markers
merge-recursive: Record more data needed for merging with dual renames
merge-recursive: Defer rename/rename(2to1) handling until process_entry
merge-recursive: Small cleanups for conflict_rename_rename_1to2
merge-recursive: Fix rename/rename(1to2) resolution for virtual merge base
merge-recursive: Introduce a merge_file convenience function
merge-recursive: Fix modify/delete resolution in the recursive case
...
