Previously, Config was using the same method for both escaping and
parsing subsection names and config values. The goal was presumably code
savings, but unfortunately, these two pieces of the git config format
are simply different.
In git v2.15.1, Documentation/config.txt says the following about
subsection names:
"Subsection names are case sensitive and can contain any characters
except newline (doublequote `"` and backslash can be included by
escaping them as `\"` and `\\`, respectively). Section headers cannot
span multiple lines. Variables may belong directly to a section or to
a given subsection."
And, later in the same documentation section, about values:
"A line that defines a value can be continued to the next line by
ending it with a `\`; the backquote and the end-of-line are stripped.
Leading whitespaces after 'name =', the remainder of the line after
the first comment character '#' or ';', and trailing whitespaces of
the line are discarded unless they are enclosed in double quotes.
Internal whitespaces within the value are retained verbatim.
Inside double quotes, double quote `"` and backslash `\` characters
must be escaped: use `\"` for `"` and `\\` for `\`.
The following escape sequences (beside `\"` and `\\`) are recognized:
`\n` for newline character (NL), `\t` for horizontal tabulation (HT,
TAB) and `\b` for backspace (BS). Other char escape sequences
(including octal escape sequences) are invalid."
The main important differences are that subsection names have a limited
set of supported escape sequences, and do not support newlines at all,
either escaped or unescaped. Arguably, it would be easy to support
escaped newlines, but C git simply does not:
$ git config -f foo.config $'foo.bar\nbaz.quux' value
error: invalid key (newline): foo.bar
baz.quux
I468106ac was an attempt to fix one bug in escapeValue, around leading
whitespace, without having to rewrite the whole escaping/parsing code.
Unfortunately, because escapeValue was used for escaping subsection
names as well, this made it possible to write invalid config files, any
time Config#toText is called with a subsection name with trailing
whitespace, like {foo }.
Rather than pile hacks on top of hacks, fix it for real by largely
rewriting the escaping and parsing code.
In addition to fixing escape sequences, fix (and write tests for) a few
more issues in the old implementation:
* Now that we can properly parse it, always emit newlines as "\n" from
escapeValue, rather than the weird (but still supported) syntax with a
non-quoted trailing literal "\n\" before the newline. In addition to
producing more readable output and matching the behavior of C git,
this makes the escaping code much simpler.
* Disallow '\0' entirely within both subsection names and values, since
due to Unix command line argument conventions it is impossible to pass
such values to "git config".
* Properly preserve intra-value whitespace when parsing, rather than
collapsing it all to a single space.
Change-Id: I304f626b9d0ad1592c4e4e449a11b136c0f8b3e3
It was already increased in 61a943e and 661232b but is still not
enough to take into account snapshot versions that are 100 or more
commits ahead of tag, i.e. 4.9.2.201712150930-r.105-gc1d37ca27
Change-Id: Ibeff73adae06b92fe5bb9c5eced9e4c6a08c437c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
These are now redundant since the parameters have javadoc.
Change-Id: I6bfde267e1712ee35871c30c8203c3b4dc5e136a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This version seems to be much stricter and reports a lot more errors
in the javadoc formatting.
Disable failOnError to prevent the build from failing due to these
newly reported problems. These should be fixed in a follow-up commit.
Change-Id: Ia403cbedf72cfe8bdaf09f30e42e3bf96084ae52
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The map returned by getAllRefs includes all refs, including symrefs like
HEAD that may not point to any object yet. That is a valid state (e.g.,
in a new repository that has just been created by "git init"), so skip
such refs.
Change-Id: Ieff8a1aa738b8d09a2990d075eb20601156b70d3
Signed-off-by: Zhen Chen <czhen@google.com>
When we are cloning we have no refs at all yet, and there cannot
(or at least should not) be any other thread doing something with
refs yet.
Locking loose refs is thus not needed, since there are no loose
refs yet and nothing should be trying to create them concurrently.
Let's skip the whole loose ref locking when we are cloning a repository.
As a result, JGit will write the refs directly to the packed-refs
file, and will not create the refs/remotes/ directories nor the
lock files underneath when cloning and packed refs are used. Since
no lock files are created, any problems on case-insensitive file
systems with tag or branch names that differ only in case are avoided
during cloning.
Detect if we are cloning based on the following heuristics:
* HEAD is a dangling symref
* There is no loose ref
* There is no packed-refs file
Note, however, that there may still be problems with such tag or
branch names later on. This is primarily a five-minutes-past-twelve
stop-gap measure to resolve the referenced bug, which affects the
Oxygen.2 release.
Bug: 528497
Change-Id: I57860c29c210568165276a123b855e462b6a107a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-4.9:
Config: Remove the include functionality
Merged with "-s ours" because the fix on stable conflicts with
the fix already done here.
Change-Id: I85e394422d5dc40ca33ed3a78ddbf5cd1da1664a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The Config class must be safe to run against untrusted input files.
Reading arbitrary local system paths using include.path is risky for
servers, including Gerrit Code Review.
This was fixed on master [1] by making "readIncludedConfig" a noop
by default. This allows only FileBasedConfig, which originated from
local disk, to read local system paths.
However, the "readIncludedConfig" method was only introduced in [2]
which was needed by [3], both of which are only on the master branch.
On the stable branch only Config supports includes. Therefore this
commit simply disables the include functionality.
[1] https://git.eclipse.org/r/#/c/113371/
[2] https://git.eclipse.org/r/#/c/111847/
[3] https://git.eclipse.org/r/#/c/111848/
Bug: 528781
Change-Id: I9a3be3f1d07c4b6772bff535a2556e699a61381c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.9:
InMemoryRepository: Make inner class MemObjDatabase static
Change-Id: I62bb5957de1ae3bc6030ea2181b09efccc48252b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The Config class must be safe to run against untrusted input files.
Reading arbitrary local system paths using include.path is risky for
servers, including Gerrit Code Review. Return null by default to
incide the include should be ignored.
Only FileBasedConfig which originated from local disk should be trying
to read local system paths. FileBasedConfig already overrides this
method with its own implementation.
Change-Id: I2ff31753868aa1bbac4a6843a4c23e50bd6f46f3
Dave Borowitz
Matthias Sohn
David Pursehouse
Christian Halstrick
Zhen Chen
Thomas Wolf
Shawn Pearce