diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java index 80835e63..4e00aa13 100644 --- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java +++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java @@ -64,11 +64,29 @@ public class PBWReader { cr = context.getContentResolver(); if (uri.toString().endsWith(".pbl") && platform.equals("aplite")) { + InputStream fin; + STM32CRC stm32crc = new STM32CRC(); + try { + fin = new BufferedInputStream(cr.openInputStream(uri)); + byte[] buf = new byte[2000]; + while (fin.available() > 0) { + int count = fin.read(buf); + stm32crc.addData(buf, count); + } + fin.close(); + } catch (IOException e) { + e.printStackTrace(); + return; + } + + int crc = stm32crc.getResult(); // language file app = new GBDeviceApp(UUID.randomUUID(), "Language File", "unknown", "unknown", GBDeviceApp.Type.UNKNOWN); File f = new File(uri.getPath()); + pebbleInstallables = new ArrayList<>(); - pebbleInstallables.add(new PebbleInstallable("lang", (int) f.length(), (int)4218691521L, PebbleProtocol.PUTBYTES_TYPE_FILE)); + pebbleInstallables.add(new PebbleInstallable("lang", (int) f.length(), crc, PebbleProtocol.PUTBYTES_TYPE_FILE)); + isValid = true; isLanguage = true; return; diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/STM32CRC.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/STM32CRC.java new file mode 100644 index 00000000..465d81ff --- /dev/null +++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/STM32CRC.java @@ -0,0 +1,164 @@ +package nodomain.freeyourgadget.gadgetbridge.devices.pebble; + +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/* + * This code was ported to java from the following cpp source file + * https://github.com/smokku/pebble/blob/8f0905197f7cead299c00006ada482095fe9d1a4/daemon/stm32crc.cpp + * (Unofficial Pebble watch support for SailfishOS/Jolla) + * + * Tail code was (hopefully) fixed by @ashimokawa on 7th October 2015 + */ + +public class STM32CRC { + private int crc; + private byte rem; + private byte buffer[] = {0, 0, 0, 0}; + + private static final int[] crc_table = { + 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, + 0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005, + 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, + 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, + 0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, + 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, + 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, + 0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd, + 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, + 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, + 0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81, + 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, + 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, + 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95, + 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, + 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, + 0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae, + 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, + 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, + 0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, + 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, + 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, + 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066, + 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, + 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, + 0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692, + 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, + 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, + 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e, + 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, + 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, + 0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a, + 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, + 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, + 0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, + 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, + 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, + 0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b, + 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, + 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, + 0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, + 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, + 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, + 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3, + 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, + 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, + 0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f, + 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, + 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, + 0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, + 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, + 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, + 0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30, + 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, + 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, + 0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654, + 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, + 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, + 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18, + 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, + 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, + 0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c, + 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, + 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4, + }; + + public void reset() { + crc = 0xffffffff; + rem = 0; + buffer[0] = 0; + buffer[1] = 0; + buffer[2] = 0; + buffer[3] = 0; + } + + public STM32CRC() { + reset(); + } + + private int calc_crc(int crc, int word) { + crc ^= word; + crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF]; + crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF]; + crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF]; + crc = (crc << 8) ^ crc_table[(crc >>> 24) & 0xFF]; + return crc; + } + + public void addData(byte[] data, int length) { + ByteBuffer buf = ByteBuffer.wrap(data, 0, length); + buf.order(ByteOrder.LITTLE_ENDIAN); + + if (rem > 0) { + for (; rem < 4 && buf.hasRemaining(); ++rem) { + buffer[rem] = buf.get(); + } + + if (rem == 4) { + int word = (buffer[0] & 0xff) | + ((buffer[1] & 0xff) << 8) | + ((buffer[2] & 0xff) << 16) | + ((buffer[3] & 0xff) << 24); + crc = calc_crc(crc, word); + buffer[0] = 0; + buffer[1] = 0; + buffer[2] = 0; + buffer[3] = 0; + rem = 0; + } + } + + + while (buf.remaining() >= 4) { + int word = buf.getInt(); + crc = calc_crc(crc, word); + } + + while (buf.hasRemaining()) { + buffer[rem++] = buf.get(); + } + } + + + public int getResult() { + if (rem > 0) { + int word = 0; + switch (rem) { + case 3: + word = (buffer[2] & 0xff) | + ((buffer[1] & 0xff) << 8) | + ((buffer[0] & 0xff) << 16); + break; + case 2: + word = ((buffer[1] & 0xff)) | + ((buffer[0] & 0xff) << 8); + break; + case 1: + word = buffer[0] & 0xff; + break; + } + crc = calc_crc(crc, word); + } + return crc; + } +}