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Aimedb: Adjust deframe/decode responsibility split

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This commit is contained in:
Tau
2018-11-26 18:52:52 -05:00
parent 377a795f9a
commit b7da410b44
2 changed files with 9 additions and 10 deletions
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8
src/aimedb/cmd.js
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@@ -10,20 +10,20 @@ class Decoder extends Transform {
}
static ident(payload) {
const gameId = payload.toString('ascii', 2, 6)
const keychipId = payload.toString('ascii', 12, 23)
const gameId = payload.toString('ascii', 0x000A, 0x000E)
const keychipId = payload.toString('ascii', 0x0014, 0x001F)
return { gameId, keychipId }
}
_transform(chunk, encoding, callback) {
const { cmd, payload } = chunk
const cmd = chunk.readUInt16LE(0x04)
switch (cmd) {
case 0x0064:
return callback(null, {
cmd: 'hello',
...Decoder.ident(payload)
...Decoder.ident(chunk)
})
case 0x0066:

11
src/aimedb/frame.js
View File

@@ -17,26 +17,25 @@ class Deframer extends Transform {
return
}
const magic = this.state.readUInt16LE(0)
const magic = this.state.readUInt16LE(0x0000)
if (magic != 0xA13E) {
return callback(new Error(`Invalid magic (decimal ${magic})`))
}
const len = this.state.readUInt16LE(6)
const len = this.state.readUInt16LE(0x0006)
if (this.state.length < len) {
return
}
console.log('Aimedb: Recv', this.state)
const frame = this.state.slice(0, len)
const cmd = this.state.readUInt16LE(4)
const payload = this.state.slice(8, len)
console.log('Aimedb: Recv', frame)
this.state = this.state.slice(len)
return callback(null, { cmd, payload })
return callback(null, frame)
}
}