The return value of `CGraph::InsertAt` was not checked. All uses of the function pass a correct index, so the return value is replaced with an assertion.
As the methods are always called at the same time, they can be combined. This also improves the performance, as the array only needs to be iterated once.
5658: Fix game freezing up on duplicate snapshot r=def- a=Fireball-Teeworlds
If a duplicate snapshot is received (for the same tick), we add both to the SnapshotStorage and end up with the same snapshot as both Cur and Prev. This results in GameInfraTick returning "inf" and results in "NaN" downstream in a few places, getting the CollLine logic stuck.
Some debug info (tcpdump, gdb, perf): https://gist.github.com/Fireball-Teeworlds/ad0016d2551a2e4d4cb5691023493856
Apparently this doesn't really happen in the wild, unless you have a buggy network stack. In which case it happens frequently enough to pinpoint the issue :D
(fixes#5657)
## Checklist
- [X] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [X] Considered possible null pointers and out of bounds array indexing
- [X] Changed no physics that affect existing maps
- [X] 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: Fireball <fireball.teeworlds@gmail.com>
If a duplicate snapshot is received (for the same tick), we add both to the SnapshotStorage and end up with the same snapshot as both Cur and Prev. This results in GameInfraTick returning "inf" and results in "NaN" downstream in a few places, getting the CollLine logic stuck.
Apparently this doesn't really happen in the wild, unless you have a buggy network stack. In which case it happens frequently enough to pinpoint the issue :D
Add `CSnapshot::IsValid` to check if a snapshot unpacked from a snapshot delta or demo is valid:
- ensure number of items and data size are not negative
- ensure that the actual size of the snapshot matches the size derived from its member variables
- ensure item offsets are within the valid range
- ensure item sizes are not negative
Add `CSnapshot::TotalSize` and `CSnapshot::OffsetSize` utility functions.
Minor improvements to related error messages.
Fixes buffer overflow:
```
==47744==ERROR: AddressSanitizer: global-buffer-overflow on address 0x558618e3767f at pc 0x558614b9bdfb bp 0x7ffe58a32cd0 sp 0x7ffe58a32cc0
READ of size 4 at 0x558618e3767f thread T0
0x558614b9bdfa in CSnapshotItem::Type() const src/engine/shared/snapshot.h:16
0x558615c3c911 in CSnapshot::GetItemType(int) const src/engine/shared/snapshot.cpp:29
0x558614aebaba in CClient::UnpackAndValidateSnapshot(CSnapshot*, CSnapshot*) src/engine/client/client.cpp:2264
0x558614af87cb in CClient::OnDemoPlayerSnapshot(void*, int) src/engine/client/client.cpp:2598
0x558615b9db1a in CDemoPlayer::DoTick() src/engine/shared/demo.cpp:659
0x558615babd3f in CDemoPlayer::Update(bool) src/engine/shared/demo.cpp:1007
0x558614afb08b in CClient::Update() src/engine/client/client.cpp:2686
0x558614b1d9eb in CClient::Run() src/engine/client/client.cpp:3296
0x558614b8e64f in main src/engine/client/client.cpp:4761
```
And fixes a buffer overflow that manifests itself as an internal ASan error:
```
=================================================================
==4755==AddressSanitizer CHECK failed: ../../../../src/libsanitizer/asan/asan_descriptions.cc:79 "((0 && "Address is not in memory and not in shadow?")) != (0)" (0x0, 0x0)
0x7f0bf5f368be in AsanCheckFailed ../../../../src/libsanitizer/asan/asan_rtl.cc:72
0x7f0bf5f54eee in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) ../../../../src/libsanitizer/sanitizer_common/sanitizer_termination.cc:77
0x7f0bf5e4cb6f in GetShadowKind ../../../../src/libsanitizer/asan/asan_descriptions.cc:79
0x7f0bf5e4cb6f in __asan::GetShadowAddressInformation(unsigned long, __asan::ShadowAddressDescription*) ../../../../src/libsanitizer/asan/asan_descriptions.cc:95
0x7f0bf5e4cb6f in __asan::GetShadowAddressInformation(unsigned long, __asan::ShadowAddressDescription*) ../../../../src/libsanitizer/asan/asan_descriptions.cc:92
0x7f0bf5e4e386 in __asan::AddressDescription::AddressDescription(unsigned long, unsigned long, bool) ../../../../src/libsanitizer/asan/asan_descriptions.cc:440
0x7f0bf5e50e94 in __asan::ErrorGeneric::ErrorGeneric(unsigned int, unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long) ../../../../src/libsanitizer/asan/asan_errors.cc:380
0x7f0bf5f35f4d in __asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool) ../../../../src/libsanitizer/asan/asan_report.cc:460
0x7f0bf5e86f5e in __interceptor_memset ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:762
0x558234873f1d in mem_zero src/base/system.cpp:213
0x55823481fc27 in CSnapshotBuilder::NewItem(int, int, int) src/engine/shared/snapshot.cpp:675
0x55823481be65 in CSnapshotDelta::UnpackDelta(CSnapshot*, CSnapshot*, void const*, int) src/engine/shared/snapshot.cpp:380
0x558234776641 in CDemoPlayer::DoTick() src/engine/shared/demo.cpp:631
0x5582347861a9 in CDemoPlayer::Update(bool) src/engine/shared/demo.cpp:1007
0x5582336d4c7d in CClient::Update() src/engine/client/client.cpp:2695
0x5582336f75dd in CClient::Run() src/engine/client/client.cpp:3305
0x558233768241 in main src/engine/client/client.cpp:4770
```
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.
5205: Allow multiple addresses per server in the serverbrowser r=def- a=heinrich5991
Support is incomplete for `leak_ip_address_to_all_servers` (will only
ping the first address of each server) and for the `leak_ip` setting
(which will also only ping the first address of each server).
Fixes#5158.
## Checklist
- [x] 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: heinrich5991 <heinrich5991@gmail.com>
This allows the client to connect to servers that have both an IPv4 and
an IPv6 address, even if the client is only connected to one of the two.
The one faster to answer will be picked.
Timeout codes are now generated based on *all* of the server's
addresses.
Fixes#5158.
Support is incomplete for `leak_ip_address_to_all_servers` (will only
ping the first address of each server) and for the `leak_ip` setting
(which will also only ping the first address of each server).
Fix pointer and pointer array variable naming
Huge renaming to match our rules
Used regex: (?!(return|delete)\b)\b\w+ (m_|ms_|g_|gs_|s_)[^a]\w+\[
(?!(return|delete)\b)\b\w+ (?!(m_|ms_|g_|gs_|s_))[^a]\w+\[
Further format static variables
Format almost all pointer names accordingly
Used regex: (?!(return)\b)\b\w+
\*(?!(m_p|p|s_p|m_ap|s_ap|g_p|g_ap|ap|gs_ap|ms_ap|gs_p|ms_p))\w+\b[^:\(p]
clang-format
Fix CI fail
Fix misnamed non pointer as pointer and non array as array
Used regex: (?!(return|delete)\b)\b\w+ (m_|ms_|g_|gs_|s_)p\w+\b
(?!return\b)\b\w+ (ms_|m_|g_|gs_|s_)a\w+\b[^\[]
clang-format
Revert to SCREAMING_SNAKE_CASE and reinstate dead code
5547: Minor tweaks to keep ODR across translation units r=def- a=Jupeyy
<!-- What is the motivation for the changes of this pull request -->
## 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: Jupeyy <jupjopjap@gmail.com>
5486: Switch to loading screen, when map creation takes too long r=def- a=Jupeyy
Same as #4941
It doesn't directly fix the issue described in #5478, it does however not trigger it anymore. it's still a bug in our code unrelated to this. This just triggered the UB from the issue as `@ardadem` confirmed, SDL received a SDL_QUIT (`[2022-06-23 20:26:31][test]: sdl closed my client, but why xd`)
Now we have a confirmed case that making the window unresponsive can create weird behavior. Similar to the other pr switch to a loading screen after 500ms (this time without menu background map tho, since the menu background map calls the same code).
We really need some fancy loading screen for such situations, even tho they are rare xD
## Checklist
- [x] 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: Jupeyy <jupjopjap@gmail.com>
Instead of closing the joysticks manually, use `SDL_QuitSubSystem(SDL_INIT_JOYSTICK)` to quit the entire subsystem, which will also close all joysticks correctly.
The engine input destructor is replaced with a `Shutdown` method so we can control when it is called, i.e. before calling `SDL_Quit`, which forcefully quits all subsystems.
`CJoystick::Close` is removed as we don't need to close joysticks manually anymore.
5429: More vector naming format r=heinrich5991 a=Chairn
Following of https://github.com/ddnet/ddnet/pull/5391
## 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: Chairn <chairn.nq@hotmail.fr>
5406: Remove namespace tw r=Jupeyy a=heinrich5991
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.
## 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: heinrich5991 <heinrich5991@gmail.com>
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.
5106: Fix dummy intended tick sent to server r=def- a=sjrc6
fixes https://github.com/ddnet/ddnet/issues/5044
Currently the dummy gives the server the wrong IntendedTick aka PredTick which (I think) makes it impossible for the server to correctly order inputs if they come early (i.e. if you're playing with high prediction margin).
Currently with dummy copy if you switch dummy with high prediction margin it will almost always desync, with this change it doesn't desync.
The only reason dummy works at all is because it relies on this code in the server to change the tick that was sent to be the current game tick, if you remove it then dummy hammer and dummy copy breaks but normal players are unaffected.
e9b59e72ff/src/engine/server/server.cpp (L1632-L1633)
I marked this PR as draft because it seems to cause some unexpected side effects:
with this change if you use dummy copy in solo part your dummy will be visually delayed, this doesn't change anything but it's different from how it was before and I don't understand why.
the sound effects from hooking with dummy copy are also not as synced as they are with the wrong tick being sent (not sure why)
I also didn't test all dummy mechanics or any advanced dummy binds which might somehow rely on the broken behavior.
With wrong tick sent to server:
https://user-images.githubusercontent.com/22122579/168413464-92a3a44b-3b75-4894-8fb0-54e64ff421fa.mp4
With correct tick:
https://user-images.githubusercontent.com/22122579/168413459-eb6f299c-260a-4ddb-9972-3dea504aef41.mp4
## Checklist
- [x] 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: Tater <Mr.Potatooh@gmail.com>
5271: Time out for POST requests too (hopefully fixes#5198) r=heinrich5991 a=def-
Untested because the issue is sporadic. But I think it makes sense to have a timeout even if this is not the root cause.
## 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
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] 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: def <dennis@felsin9.de>
