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e5401b07
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2025-03-26T16:02:58
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symbols: Improve Modmap parsing
Parse, dont’t validate: ensure *at parsing* that `modifier_map`
definitions use a list of keys and keysyms.
This enables to remove the redundant `ExprResolveKeySym` and have keysym
parsing exclusively in handled in `parser.y`.
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e8561909
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2025-03-18T14:34:10
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xkbcomp: Fix keycodes bounds
- Refactor to check conflicts first for the key names and then for the
keycodes. This seems more useful for the user and enable further
memory optimizations.
- Do not allocate until we are sure to add the keycode. The bounds are
only updated afterwards, so the call to `FindKeyByName` should be
more efficient.
- Fixed keycodes bounds not shrunk correctly when an existing keycode
is overridden.
- Do not prepare keyname strings for logging if we are not going to
use them.
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befa0cdd
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2025-02-12T15:38:58
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test: Check integers syntax
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4cef822a
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2025-02-12T07:44:34
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test: Check masks syntax
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e120807b
|
2025-01-29T15:35:22
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Update license notices to SDPX short identifiers + update LICENSE
Fix #628.
Signed-off-by: Ran Benita <ran@unusedvar.com>
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502e9e5b
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2025-01-29T12:19:10
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xkbcomp: Add stricter bounds for keycodes and levels
Our current implementation uses continuous arrays indexed by keycodes
and levels. This is simple and good enough for realistic keymaps.
However, they are allowed to have big values that will lead to either
memory exhaustion or a waste of memory (sparse arrays).
Added the much stricter upper bounds `0xfff` for keycodes[^1] and 2048
for levels[^2], which should still be plenty enough and provides stronger
memory security.
[^1]: Current max keycode is 0x2ff in Linux.
[^2]: Should be big enough to satisfy automatically generated keymaps.
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88a3d3c2
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2025-01-23T16:03:51
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tests: Refactor buffercomp
Move tests into proper functions and log tests names.
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b1e1aae6
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2025-01-23T15:20:44
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xkbcomp: Fix memory leak when extra content after keymap
It triggers with e.g.:
```
xkb_keymap { xkb_keycodes { }; };
}; // erroneous
```
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709027ec
|
2025-01-23T09:12:15
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symbols: Fix inconsistent error handling
Currently the following keymap triggers a critical error (invalid
`vmods`) only for the second key statement, while it should handle both
equally.
```
xkb_keymap {
xkb_keycodes { <> = 9; };
xkb_types { };
xkb_compat { };
xkb_symbols {
key <> { vmods = [], repeats = false };
key <> { repeats = false, vmods = [] };
};
};
```
Fixed by parsing the whole symbols body and failing if any error was found.
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ec2915fe
|
2025-01-22T17:18:21
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symbols: Fix a possible null pointer deference
Introduce a new Expression type, `EXPR_EMPTY_LIST`, to avoid the
ambiguity between action and keysym empty lists. Two alternatives were
rejected to keep the semantics clear:
- Using `EXPR_KEYSYM_LIST`: because we would end up accepting an empty
keysym list while processing actions.
- Using NULL: convey no info and is hazardous.
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7036e46c
|
2025-01-13T15:20:47
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symbols: Add tests for key merge modes (keysyms/actions)
This commit adds tests for merging various key configurations:
- With/without keysyms/actions
- Single/multiple keysyms/actions per level
We test all the merge modes for including a map (global) as well as
directly on the keys (local):
- default (global: include, local: implicit)
- augment
- override
- replace
The tests data are generated with:
- A Python script `scripts/update-merge-modes-tests.py` for keycodes
and symbols data. Use `--debug` for extra comments to help debugging.
The script can optionally generate C headers for alternative key
sequence tests, that were used before implementing golden tests.
The latter tests are not used anymore (duplicate with golden tests)
but their generator is kept for now, as they can still be useful for
debugging or writing similar tests.
- The `merge-modes` test generates its own keymap files for golden
tests, using: `build/test-merge-modes update`. It can also replace
them with the obtained output rather than the expected one using
`build/test-merge-modes update-obtained`, which is very useful for
debugging.
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71d64df3
|
2024-10-08T18:45:18
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symbols: Add tests for multiple actions per level
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31c6d866
|
2024-10-08T18:39:00
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symbols: Min. 2 keysyms in level list
Do not allow `{ a }` when a single `a` suffices.
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929a485f
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2024-10-08T12:52:53
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symbols: Fix too liberal parsing of keysyms lists
Currently we are too liberal when parsing symbols lists: e.g.
`[{a,{b}}]` is parsed as `[{a,b}]` but it should be rejected.
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e325e65e
|
2024-02-20T08:13:37
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Add test_unit to all tests
Currently it only ensure we do not buffer `stdout`.
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00e3058e
|
2023-11-06T21:53:51
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Prevent recursive includes of keymap components
- Add check for recursive includes of keymap components. It relies on
limiting the include depth. The threshold is currently to 15, which
seems reasonable with plenty of margin for keymaps in the wild.
- Add corresponding new log message `recursive-include`.
- Add tests for recursive includes.
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82e9293e
|
2023-10-30T15:28:10
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xkbcomp: early detection of invalid encoding
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f937c308
|
2023-10-29T07:31:34
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xkbcomp: skip heading UTF-8 encoded BOM (U+FEFF)
Leading BOM is legal and is used as a signature — an indication that
an otherwise unmarked text file is in UTF-8.
See: https://www.unicode.org/faq/utf_bom.html#bom5 for further
details.
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b06aedb8
|
2023-05-02T14:15:55
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scanner: allow for a zero terminated string as keymap
As the documentation for xkb_keymap_new_from_buffer() states, the "input string
does not have to be zero-terminated". The actual implementation however failed
with "unrecognized token/syntax error" when it encountered a null byte.
Fix this by allowing a null byte at the last position of the buffer. Anything
else is likely a client error anyway.
Fixes #307
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40aab05e
|
2019-12-27T13:03:20
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build: include config.h manually
Previously we included it with an `-include` compiler directive. But
that's not portable. And it's better to be explicit anyway.
Every .c file should have `include "config.h"` first thing.
Signed-off-by: Ran Benita <ran@unusedvar.com>
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36f55c49
|
2013-03-11T12:53:39
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keymap: add xkb_keymap_new_from_buffer()
The current API doesn't allow the caller to create keymaps from mmap()'ed
files. The problem is, xkb_keymap_new_from_string() requires a terminating
0 byte. However, there is no way to guarantee that when using mmap() so a
user currently has to copy the whole file just to get the terminating zero
byte (assuming they cannot use xkb_keymap_new_from_file()).
This adds a new entry xkb_keymap_new_from_buffer() which takes a memory
location and the buffer size in bytes.
Internally, we depend on yy_scan_{string,byte}() helpers. According to
flex documentation these already copy the input string because they are
wrappers around yy_scan_buffer().
yy_scan_buffer() on the other hand has some insane requirements. The
buffer must be writeable and the last two bytes must be ASCII-NUL. But the
buffer may contain other 0 bytes just fine.
Because we don't want these constraints in our public API,
xkb_keymap_new_from_buffer() needs to create a copy of the input memory.
But it then calls yy_scan_buffer() directly. Hence, we have the same
number of buffer-copies as with *_from_string() but without the
terminating 0 requirement.
The explicit yy_scan_buffer() call is preferred over yy_scan_byte() so the
buffer-copy operation is not hidden somewhere in flex.
Maybe some day we no longer depend on flex and can have a zero-copy API. A
user could mmap() a file and it would get parsed right from this buffer.
But until then, we shouldn't expose this limitation in the API but instead
provide an API that some day can work with zero-copy.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
[ran: rebased on top of my branch]
Conflicts:
Makefile.am
src/xkbcomp/xkbcomp.c
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