This also gives us some CSRF protection. Note that we make use of the
hmac to protect the redirect value.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This leverages the new lua support. See
filters/simple-authentication.lua for explaination of how this works.
There is also additional documentation in cgitrc.5.txt.
Though this is a cookie-based approach, cgit's caching mechanism is
preserved for authenticated pages.
Very plugable and extendable depending on user needs.
The sample script uses an HMAC-SHA1 based cookie to store the
currently logged in user, with an expiration date.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* Rename the capitalize-* filters to dump.* since they also dump the
arguments.
* Add full argument validation to the email filters.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
This did not really break anything in the past since spaces are ignored
when rendering HTML. Remove the preceding space anyway to prevent from
potential future problems.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* Validate the email filter by manipulating stdin. Additional checks for
all the arguments can be added in a later patch.
* Add the exec prefix to all informational messages.
* Rename the filter repository to filter-exec. The Git repository itself
is not renamed since it can be shared amongst all filter types.
* In the filter checks, check whether all arguments are passed properly
instead of validating the buffer/stdin only.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Filters can now indicate a status back to cgit by means of the exit code
for exec, or the return value from close for Lua.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Mention that the snapshot setting only specifies the formats that links
are generated for and not the set of formats that are accessible via
HTTP.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
We favor LuaJIT over Lua. We disable Lua if neither can be found. We
error out if a particular Lua is specified via LUA_IMPLEMENTATION=JIT or
LUA_IMPLEMENTATION=VANILLA, but cannot be found. We print a status
message depending on what happens.
Also, we do not link against libdl on the BSDs, since they include it as
part of libc.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Since the email filter is called from lots of places, the script might
benefit from knowing the origin. That way it can modify its contents
and/or size depending.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
So that we don't have to include the if(filter) open_filter(filter)
block everywhere, we introduce the guard in the function itself. This
should simplify quite a bit of code.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Filters can now call hook_write and unhook_write if they want to
redirect writing to stdout to a different function. This saves us from
potential file descriptor pipes and other less efficient mechanisms.
We do this instead of replacing the call in html_raw because some places
stdlib's printf functions are used (ui-patch or within git itself),
which has its own internal buffering, which makes it difficult to
interlace our function calls. So, we dlsym libc's write and then
override it in the link stage.
While we're at it, we move considerations of argument count into the
generic new filter handler.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
At some point, we're going to want to do lazy deallocation of filters.
For example, if we implement lua, we'll want to load the lua runtime
once for each filter, even if that filter is called many times.
Similarly, for persistent exec filters, we'll want to load it once,
despite many open_filter and close_filter calls, and only reap the child
process at the end of the cgit process. For this reason, we add here a
cleanup function that is called at the end of cgit's main().
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This allows different filter implementations to be specified in the
configuration file. Currently only "exec" is supported, but it may now
be specified either with or without the "exec:" prefix.
Signed-off-by: John Keeping <john@keeping.me.uk>
Change the existing cgit_{open,close,fprintf}_filter functions to
delegate to filter-specific implementations accessed via function
pointers on the cgit_filter object.
We treat the "exec" filter type slightly specially here by putting its
structure definition in the header file and providing an "init" function
to set up the function pointers. This is required so that the
ui-snapshot.c code that applies a compression filter can continue to use
the filter interface to do so.
Signed-off-by: John Keeping <john@keeping.me.uk>
This stops the code in cgit.c::print_repo needing to inspect the
cgit_filter structure, meaning that we can abstract out different filter
types that will have different fields that need to be printed.
Signed-off-by: John Keeping <john@keeping.me.uk>
- Switched back to python2 according to a problem in pygments with python3.
With the next release of pygments this problem should be fixed.
Issue see here:
https://bitbucket.org/birkenfeld/pygments-main/issue/901/problems-with-python3
- Just read the stdin, decode it to utf-8 and ignore unknown signs. This ensures
that even destroyed files do not cause any errors in the filter.
- Improved language guessing:
-> At first use guess_lexer_for_filename for a better detection of the used
programming languages (even mixed cases will be detected, e.g. php + html).
-> If nothing was found look if there is a shebang and use guess_lexer.
-> As default/fallback choose TextLexer.
Signed-off-by: Stefan Tatschner <stefan@sevenbyte.org>
This allows running the entire test suite with a set of command-line
options. For example:
make test CGIT_TEST_OPTS=--valgrind
Signed-off-by: John Keeping <john@keeping.me.uk>
This is for consistency with other callers. The value returned from
cgit_rooturl is not guaranteed to be HTML-safe.
Signed-off-by: John Keeping <john@keeping.me.uk>
As far as I know, there is no requirement that $SCRIPT_NAME contain only
URL-safe characters, so we need to make sure that any special characters
are escaped.
Signed-off-by: John Keeping <john@keeping.me.uk>
Everywhere else we use html_txt to escape any special characters in
these variables. Do so here as well.
Signed-off-by: John Keeping <john@keeping.me.uk>
This avoids poking into the filter data structure at various points in
the code. We rely on the fact that the number of arguments is fixed
based on the filter type (set in cgit_new_filter) and that the call
sites all know which filter type they're using.
Signed-off-by: John Keeping <john@keeping.me.uk>
By switching the assignment of fields in the cgit_filter structure to
use designated initializers, the compiler will initialize all other
fields to their default value. This will be needed when we add the
extra_args field in the next patch.
Signed-off-by: John Keeping <john@keeping.me.uk>
Now running tests with the "--valgrind" option will run cgit under
Valgrind instead of all Git commands.
Signed-off-by: John Keeping <john@keeping.me.uk>
Valgrind says:
==18344== Conditional jump or move depends on uninitialised value(s)
==18344== at 0x406C83: open_slot (cache.c:63)
==18344== by 0x407478: cache_ls (cache.c:403)
==18344== by 0x404C9A: process_request (cgit.c:639)
==18344== by 0x406BD2: fill_slot (cache.c:190)
==18344== by 0x4071A0: cache_process (cache.c:284)
==18344== by 0x404461: main (cgit.c:952)
==18344== Uninitialised value was created by a stack allocation
==18344== at 0x40738B: cache_ls (cache.c:375)
This is caused by the keylen field being used to calculate whether or
not a slot is matched. We never then check the value of this and the
length of data read depends on the key length read from the file so this
isn't dangerous, but it's nice to avoid branching based on uninitialized
data.
Signed-off-by: John Keeping <john@keeping.me.uk>
It's only used in one place, and not useful to have around since
close_filter will die() if exit_status isn't what it expects, anyway. So
this is best as just a local variable instead of as part of the struct.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* Formatting and spelling fixes.
* A bit mask with the size of one byte only allows for storing 8 (not
255!) different flags.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
When parsing command line arguments, no pair of command line options can
ever match simultaneously. Use "else if" blocks to reflect this. This
change improves both readability and speed.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Use suffixcmp() from Git instead of reimplementing it. This is a
preparation for moving to ends_with() in Git 1.8.6.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Since the introduction of selective snapshot format configuration in
dc3c9b5 (allow selective enabling of snapshots, 2007-07-21), we allowed
seven different delimiters for snapshot formats, while the documentation
has always been clear about spaces being the only valid delimiter:
The value is a space-separated list of zero or more of the values
"tar", "tar.gz", "tar.bz2", "tar.xz" and "zip".
Supporting the undocumented delimiters makes the code unnecessarily
complex. Remove them.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
This is a preparation for replacing all prefix checks with either
strip_prefix() or starts_with() when Git 1.8.6 is released.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* Remove the dependency on Git (which can be obtained automatically when
building, using either the Git submodule or `make get-git`).
* Use proper upstream names of dependencies.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* Several small spelling and capitalization fixes.
* Use consistent and better-looking formatting that is compatible with
AsciiDoc (and partly compatible with RST).
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Jason A. Donenfeld