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Fix image parsing when the upgrade file identifier is not at position 0 (#59)

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cemonneau
2021-11-11 20:12:06 +01:00
committed by GitHub
parent 0d90c9731b
commit db0ead70a4
1 changed files with 5 additions and 2 deletions
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7
lib/ota.js
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@@ -8,7 +8,10 @@ function parseSubElement(buffer, position) {
return {tagID, length, data}; return {tagID, length, data};
} }
function parseImage(buffer) { function parseImage(rawBuffer) {
const start = rawBuffer.indexOf(upgradeFileIdentifier);
const buffer = rawBuffer.slice(start);
const header = { const header = {
otaUpgradeFileIdentifier: buffer.subarray(0, 4), otaUpgradeFileIdentifier: buffer.subarray(0, 4),
otaHeaderVersion: buffer.readUInt16LE(4), otaHeaderVersion: buffer.readUInt16LE(4),
@@ -55,4 +58,4 @@ function parseImage(buffer) {
module.exports = { module.exports = {
parseImage parseImage
}; };