Though SHA1 is broken, HMAC-SHA1 is still fine. But let's not push our
luck; SHA256 is more sensible anyway.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
CC ../shared.o
../shared.c: In function ‘expand_macro’:
../shared.c:487:3: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
strncpy(name, value, len);
^~~~~~~~~~~~~~~~~~~~~~~~~
../shared.c:484:9: note: length computed here
len = strlen(value);
^~~~~~~~~~~~~
../ui-shared.c: In function ‘cgit_repobasename’:
../ui-shared.c:136:2: warning: ‘strncpy’ specified bound 1024 equals destination size [-Wstringop-truncation]
strncpy(rvbuf, reponame, sizeof(rvbuf));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC ../ui-ssdiff.o
../ui-ssdiff.c: In function ‘replace_tabs’:
../ui-ssdiff.c:142:4: warning: ‘strncat’ output truncated copying between 1 and 8 bytes from a string of length 8 [-Wstringop-truncation]
strncat(result, spaces, 8 - (strlen(result) % 8));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
When empty repos exist, comparing them against an existing repo with a
good mtime might, with particular qsort implementations, not sort
correctly, because of this brokenness:
if (get_repo_modtime(r1, &t) && get_repo_modtime(r2, &t))
However, sorting by the age column works as expected, so anyway, to tidy
things up, we simply reuse that function.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Otherwise we get the classic Python UTF-8 errors, and the text is all
out of order. While we're at it, switch to python3 so we only have to
support one set of oddball semantics.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Suggested-by: Daniel Campbell <dlcampbell@gmx.com>
ctx.env.content_length is an unsigned int, coming from the
CONTENT_LENGTH environment variable, which is parsed by strtoul. The
HTTP/1.1 spec says that "any Content-Length greater than or equal to
zero is a valid value." By storing this into an int, we potentially
overflow it, resulting in the following bounding check failing, leading
to a buffer overflow.
Reported-by: Erik Cabetas <Erik@cabetas.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
The check in parse_user that eventually makes it into committer_date and
tagger_date is:
else if (mode == 3 && isdigit(*p)) {
*date = atol(p);
mode++;
}
Since isdigit('-') is always false, date will never be negative. Thus
the sign of this function:
static int cmp_age(int age1, int age2)
{
if (age1 != 0 && age2 != 0)
return age2 - age1;
if (age1 == 0 && age2 == 0)
return 0;
if (age1 == 0)
return +1;
return -1;
}
Will always be the same as the sign of this function:
static inline int cmp_age(int age1, int age2)
{
return age2 - age1;
}
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Idea-by: Lukas Fleischer <cgit@cryptocrack.de>
Right now if you visit:
<http://git.zx2c4.com/systemd/diff/src/udev/udev-builtin-input_id.c?id=bcfce235>
you'll see that if you reload the page a few times, a bunch of times the
diffstat comes out with no lines being shown or changed. I'm not
currently sure what the cause of this is, but I suspect it might have to
do with this uninitialized data.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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>
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>
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>
Jason A. Donenfeld