Pebble: calculate CRC for language files (.pbl) since they do not have a manifest
It should fix installation of all .pbl files (tested with Spanish, German, French and the inofficial Japanese language pack) This also marks the return of the infamous STM32CRC, this time with hopefully fixed tail code.here
Andreas Shimokawa
parent
cd7acf6572
commit
262271dbd0
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@ -64,11 +64,29 @@ public class PBWReader {
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cr = context.getContentResolver();
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if (uri.toString().endsWith(".pbl") && platform.equals("aplite")) {
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InputStream fin;
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STM32CRC stm32crc = new STM32CRC();
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try {
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fin = new BufferedInputStream(cr.openInputStream(uri));
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byte[] buf = new byte[2000];
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while (fin.available() > 0) {
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int count = fin.read(buf);
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stm32crc.addData(buf, count);
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}
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fin.close();
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} catch (IOException e) {
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e.printStackTrace();
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return;
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}
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int crc = stm32crc.getResult();
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// language file
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app = new GBDeviceApp(UUID.randomUUID(), "Language File", "unknown", "unknown", GBDeviceApp.Type.UNKNOWN);
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File f = new File(uri.getPath());
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pebbleInstallables = new ArrayList<>();
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pebbleInstallables.add(new PebbleInstallable("lang", (int) f.length(), (int)4218691521L, PebbleProtocol.PUTBYTES_TYPE_FILE));
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pebbleInstallables.add(new PebbleInstallable("lang", (int) f.length(), crc, PebbleProtocol.PUTBYTES_TYPE_FILE));
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isValid = true;
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isLanguage = true;
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return;
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@ -0,0 +1,164 @@
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package nodomain.freeyourgadget.gadgetbridge.devices.pebble;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/*
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* This code was ported to java from the following cpp source file
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* https://github.com/smokku/pebble/blob/8f0905197f7cead299c00006ada482095fe9d1a4/daemon/stm32crc.cpp
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* (Unofficial Pebble watch support for SailfishOS/Jolla)
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*
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* Tail code was (hopefully) fixed by @ashimokawa on 7th October 2015
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*/
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public class STM32CRC {
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private int crc;
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private byte rem;
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private byte buffer[] = {0, 0, 0, 0};
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private static final int[] crc_table = {
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0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
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0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
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0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
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0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
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0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
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0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
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0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
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0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
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0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
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0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
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0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
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0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
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0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
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0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
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0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
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0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
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0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
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0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
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0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
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0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
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0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
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0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
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0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
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0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
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0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
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0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
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0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
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0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
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0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
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0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
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0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
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0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
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0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
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0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
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0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
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0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
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0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
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0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
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0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
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0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
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0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
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0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
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0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
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0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
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0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
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0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
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0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
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0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
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0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
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0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
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0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
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0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
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0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
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0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
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0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
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0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
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0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
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0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
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0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
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0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
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0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
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0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
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0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
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0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4,
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};
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public void reset() {
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crc = 0xffffffff;
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rem = 0;
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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}
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public STM32CRC() {
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reset();
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}
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private int calc_crc(int crc, int word) {
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crc ^= word;
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crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF];
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crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF];
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crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF];
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crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF];
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return crc;
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}
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public void addData(byte[] data, int length) {
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ByteBuffer buf = ByteBuffer.wrap(data, 0, length);
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buf.order(ByteOrder.LITTLE_ENDIAN);
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if (rem > 0) {
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for (; rem < 4 && buf.hasRemaining(); ++rem) {
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buffer[rem] = buf.get();
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}
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if (rem == 4) {
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int word = (buffer[0] & 0xff) |
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((buffer[1] & 0xff) << 8) |
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((buffer[2] & 0xff) << 16) |
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((buffer[3] & 0xff) << 24);
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crc = calc_crc(crc, word);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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rem = 0;
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}
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}
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while (buf.remaining() >= 4) {
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int word = buf.getInt();
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crc = calc_crc(crc, word);
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}
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while (buf.hasRemaining()) {
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buffer[rem++] = buf.get();
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}
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}
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public int getResult() {
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if (rem > 0) {
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int word = 0;
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switch (rem) {
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case 3:
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word = (buffer[2] & 0xff) |
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((buffer[1] & 0xff) << 8) |
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((buffer[0] & 0xff) << 16);
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break;
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case 2:
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word = ((buffer[1] & 0xff)) |
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((buffer[0] & 0xff) << 8);
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break;
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case 1:
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word = buffer[0] & 0xff;
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break;
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}
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crc = calc_crc(crc, word);
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}
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return crc;
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}
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}
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