When empty PNG files are loaded, the `std::vector` for the file contents is resized to size 0, which results in undefined behavior when it is accessed with `front`.
When `io_tell` fails, i.e. returns `-1`, this was incorrectly cast to an `unsigned` and therefore caused a very large allocation and potentially crashes due to lack of memory.
Adapt the `CDataFileReader::GetItem` function so it optionally also returns a `CUuid` for UUID-based map items, including for items with unknown UUIDs where the item type will be `-1`. Adapt the `CDataFileWriter::AddItem` function so it optionally also accepts a `CUuid` which will be used if the item type is `-1`.
The additional checks for invalid map item types in the map tools are removed again and instead the new UUID parameters are used so map items with unknown UUIDs are written back to maps correctly.
Closes#7701.
All `map_*` tools were crashing with the assertion `Invalid type` when used on maps that contain unknown UUID-based map items. When the UUID cannot be resolved, the type `-1` is returned by the `GetItem` function. The assertion predates UUID map items, so this crash has likely existed since the introduction of UUID map items. The editor was not affected and has instead always discarded map items that it does not support. The tools will now also discard map items with unknown UUIDs.
See #7669.
Limit number of sounds being loaded in the client to 64, instead of writing sample indices out of bounds.
Check if sound indices are out of bounds. It was only checked whether the sound index is -1 but no other bounds checking was performed.
Check if image indices are out of bounds. It was not checked for all negative image indices, only -1 was considered.
Add popup message in the editor when trying to add more than 64 sounds, same as for images.
Limit number of images in `map_convert_07` tool, instead of writing out of bounds.
Simplify the usage of datafile reader and writer by adding utility functions to read and write zero-terminated UTF-8 strings.
Improve validation of string data read from datafiles. It is ensure that string data is null-terminated, has no internal NUL-characters and is valid UTF-8.
Fix loading of external sounds in the editor. The wrong path variable was being used, so the sound files would not be loaded from correct folder.
Add tests for new datafile reader/writer functions.
Use `enum EImageFormat` type for image format literals and variables.
Add `PixelSize` function to get the number of bytes/color channels per pixel for a specified image format.
Remove unused store format argument of texture loading functions. All textures are automatically being stored as RGBA, so the argument was unused. Also remove the therefore unused `FORMAT_AUTO`.
Rename variables consistently to `PixelSize` and use `size_t`, instead of mixing different names like `BPP` and `ColorChannelCount`.
Validate image format loaded from maps using `CImageInfo::ImageFormatFromInt`. Add `FORMAT_ERROR` to represent invalid formats.
Remove redundant `PixelSize` parameter from graphics backends and commands, which can be derived from the texture format.
Fix memory leak when RGB image data is being converted to RGBA format when saving map in editor.
This map item version adds the `m_Format` field, which specifies the image format for embedded images. The default value is `CImageInfo::FORMAT_RGBA` for map items of the previous version.
This allows a larger range of PNGs to be loaded while still maintaining
backward compatibility with older clients by annoying the user.
This warning can be enabled by the `warn-pnglite-incompatible-images`
key in the https://info2.ddnet.tw/info JSON, if the key is not there or
the JSON hasn't been obtained yet, the warning is disabled. Since the
JSON is cached across restarts, it'll be effective for initially loaded
images from the second start.
This is desirable mainly because libpng is maintained and pnglite is
not. pnglite was last updated in 2007 (15 years ago) and probably has a
lot of security vulnerabilities.
libpng is an actively maintained library also used by browsers like
Firefox or Chromium, so it's less likely to contain security
vulnerabilities, also it's more likely to be packaged by Linux
distributions.
It didn't have a clear role, it just acted as a distinguisher between
two functions with the same name.
Rename `tw::time_get` to `time_get_nanoseconds` and delete the old
`time_get_nanoseconds`. Move `CCmdlineFix` and the typed
`net_socket_read_wait` function to the global namespace.
This makes the "black console window" less important on Windows (or
anywhere else, for that matter), lets you see logs from other threads in
the f1 console, and removes the distinction between `IConsole::Print`
and `dbg_msg`.
This way new players will get DDNet directory, old ones can switch
directory if they want, or keep using the old one.
If we ever enforce a switch in a future version, this will make it
easier since older DDNet versions will also support the DDNet directory
already.
3197: 0.7 map converter - Stop embedding rgb images r=heinrich5991 a=Patiga
DDNet doesn't CMapItemTypeImage version 2, meaning it doesn't have
support yet for having rgb images in maps. Currently, trying that would result in
invalid map files.
## Checklist
- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test if it works standalone, system.c especially
- [x] Considered possible null pointers and out of bounds array indexing
- [x] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)
Co-authored-by: Patiga <dev@patiga.eu>
DDNet doesn't CMapItemTypeImage version 2, meaning it doesn't have
support yet for having rgb images in maps. Currently, trying that would result in
invalid map files.
and print a more telling error message
I'll check all our existing maps for failures now:
$ find . -iname '*.map' | while read i; do echo $i; map_extract $i > /dev/null; find . -iname '*.png' | while read j; do dilate $j; rm -- $j; done; done
For skins Soreu and the skin DB team is already taking care.
Purely automatic change. In case of conflict with this change, apply the
other change and rerun the formatting to restore it:
$ python scripts/fix_style.py
ChillerDragon
