This util function uses the generic libavutil hash API to hash any data
with the specified algorithm to a bstr. It deduplicates multiple hash
routines used in mpv.
There are at least two users of this functionality, the filename/no-ext
property and the screenshot template %F specifier. The latter uses a
buggy private version. So split out what the former does, so it can be
reused.
Co-authored-by: Guido Cella <guido@guidocella.xyz>
The detection for leading dots was in the wrong place, in case path was
not already a basename. Fixed by acting on basename. Also all leading
dots are now getting skipped, otherwise the root of `path/to/...ext`
could end up as `path/to/..` which in the wrong place/context would mean
directory traversal.
Additionally, since we act on the basename there is no longer a need to
test for trailing path separators. The previous check also did not
account for Windows paths with \ separators.
Co-authored-by: Guido Cella <guido@guidocella.xyz>
If the current working directory or the realpath could not be retrieved,
return the path as it was passed to mp_normalize_path() to avoid
guarding the return value. This is also makes it consistent with what
the Windows code was doing.
This fixes options like --audio-file=- and avoids returning $PWD/- as
path and stream-open-filename when playing from standard input.
It will also allow storing playlist filenames as normalized without
checking for - at the caller.
Fixes 23b57e9f7f.
This better matches other Unix tools.
Note that in practice the umask downgrades this to 0755 or 0775, so folders don't actually end up world-readable.
removes awkward back-and-forth int -> double -> int conversion.
the last step also broke uniformity, though it likely doesn't
matter much in mpv's playlist shuffle context.
c365e2f7 added av_random_bytes() to avoid multiple
threads/processes getting the same seed. but the fallback case
still suffers from it.
also mix in a function pointer, which hopefully is randomized
per process due to ASLR (20+ years old technology) along with
the stack position which will be different on different threads.
splitmix was used since it's recommended by the official xoshiro
site [0] as a "radically different" PRNG to avoid correlation of
similar seeds. av_random_bytes() is cryptographically secure
and so we don't have to worry about that. so just use it to
initialize the whole state.
[0]: https://prng.di.unimi.it/
mutex itself was probably more costly than the PRNG itself. and
locking PRNGs is almost universally not recommended. simply add
a state parameter that the caller can hold to avoid locks.
Look it up if you really care but basically z as a format specifier
often doesn't work in mingw because reasons. Our CI was working by
accident because of meson previously ignoring the CFLAGS variable. Use
our wrapper instead for these places.
Add 4 stage trie to lookup unicode codepoint width and grapheme join
rules.
Generated by GraphemeTableGen from Microsoft Terminal (MIT Licence):
https://github.com/microsoft/terminal/blob/a7e47b711a2adc7b9e80eddea8168089f7d3b11e/src/tools/GraphemeTableGen/Program.cs
With minor adjustment to use it in C codebase.
- Replaced constexpr with static
- Replaced auto with explicit types
Generated from Unicode 16.0.0:
ucd.nounihan.grouped.xml: sha256(b11c2d23673bae660fff8ddcd3c1de4d54bdf6c60188a07696b010282f515fcf)
When starting multiple processes of `mpv --shuffle` in parallel,
sometimes the random seed happens to be identical, so files are
played in the same random order.
mp_rand_seed(0) now uses a random seed provided by libavutil,
and only falls back to time in case of failure.
It has been changed in one of the iterations of the patch during review,
but bstr doesn't have to be null terminated. Fix it by adding dedicated
node_map helper.
Fixes: 1a27f3c
option-info/<name>/default-value would be initialized with zeroed
object, which is not valid for string typed options, as the would be set
to NULL.
Found by OSS-Fuzz.
Before a7158ceec0, string comparision was
done with strcmp, which does unsigned comparison. The natural sort
implementation instead compares on char values.
This causes implementation-defined behavior in comparison, depending on
the signedness of char type.
Fix this by using unsigned comparison instead.
Fuzzing expect deterministic behavior. While we don't use this random
generator for anything significant, still good to set the seed, in case
of future usage.
Hubert Głuchowski