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37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
/*
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* SPDX-License-Identifier: MIT
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* PrefsCodec - byte codecs for the two binary prefs files.
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*
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* Companion /lfs/new_prefs and server /lfs/repeater/prefs are serialized field
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* by field, not as struct dumps; the offsets are the file layout (byte maps in
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* memory prefs-format.md). Zephyr-free so the host tests can pin both layouts.
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* The stores only move bytes between these and the filesystem.
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*/
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include "NodePrefs.h"
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#define COMPANION_PREFS_SIZE 272
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#define SERVER_PREFS_SIZE 311
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/* Companion file layout, including the fields shared with upstream's former
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* new_prefs up to offset 92. Returns the byte count (COMPANION_PREFS_SIZE),
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* or 0 if cap is too small. */
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size_t companionPrefsEncode(const NodePrefs &p, uint8_t *buf, size_t cap);
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/* Returns false and leaves p untouched when the data cannot be ours: shorter
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* than 90 bytes, or radio parameters outside ZC_RADIO_*. Fields past len keep
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* their value in p, which the caller has filled with initNodePrefs(). */
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bool companionPrefsDecode(NodePrefs &p, const uint8_t *buf, size_t len);
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/* Repeater / room server / observer layout (upstream CommonCLI order to 290,
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* then ZephCore's tail). Returns SERVER_PREFS_SIZE, or 0 if cap is too small. */
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size_t serverPrefsEncode(const NodePrefs &p, uint8_t *buf, size_t cap);
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/* Fields past len keep their value in p. Radio parameters outside ZC_RADIO_*
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* are replaced by the LoRaConfig defaults; everything is sanitized. */
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void serverPrefsDecode(NodePrefs &p, const uint8_t *buf, size_t len);
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