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prevent bad filenames in "segment names as ledmap names"

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Increase buffer size for fileName to accommodate long segment names (max 32 chars) without producing broken filenames.
This commit is contained in:
Frank
2025-11-07 15:07:13 +01:00
committed by GitHub
parent 01d7f17730
commit d78ea5ae2e
1 changed files with 2 additions and 2 deletions
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4
wled00/FX_fcn.cpp
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@@ -1765,8 +1765,8 @@ void WS2812FX::enumerateLedmaps() {
uint8_t segment_index = 0;
for (segment &seg : _segments) {
if (seg.name != nullptr && strlen(seg.name) > 0) {
char fileName[33];
snprintf_P(fileName, sizeof(fileName), PSTR("/lm%s.json"), seg.name);
char fileName[33+11] = { '\0' }; // segment name is 32 chars max, so we need 43 chars in worst case
snprintf_P(fileName, sizeof(fileName)-1, PSTR("/lm%s.json"), seg.name);
bool isFile = WLED_FS.exists(fileName);
if (isFile) ledMaps |= 1 << (10+segment_index);
}