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DDP input: reject packets with unsupported data type or non-display destination (#5390)

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* Fix: reject invalid DDP packets with wrong destination or unsupported data type

Co-authored-by: DedeHai <6280424+DedeHai@users.noreply.github.com>
This commit is contained in:
Copilot
2026-03-29 18:01:11 +02:00
committed by Frank
parent a233e99909
commit d9e8203276
5 changed files with 30 additions and 27 deletions
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wled00/data/common.js
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@@ -187,7 +187,7 @@ function sendDDP(ws, start, len, colors) {
pkt[0] = 0x02; // DDP protocol indicator for WLED websocket. Note: below DDP protocol bytes are offset by 1
pkt[1] = 0x40; // flags: 0x40 = no push, 0x41 = push (i.e. render), note: this is DDP protocol byte 0
pkt[2] = 0x00; // reserved
pkt[3] = 0x01; // 1 = RGB (currently only supported mode)
pkt[3] = 0x0B; // RGB, 8bit per channel
pkt[4] = 0x01; // destination id (not used but 0x01 is default output)
pkt[5] = (off >> 24) & 255; // DDP protocol 4-7 is offset
pkt[6] = (off >> 16) & 255;