ssize_t WindowsUsbTransport::Read(void* data, size_t len) {
unsigned long time_out = 0;
unsigned long read = 0;
int ret;
DBG("usb_read %d\n", len);
if (nullptr != handle_) {
while (1) {
int xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
ret = AdbReadEndpointSync(handle_->adb_read_pipe, data, xfer, &read, time_out);
errno = GetLastError();
DBG("usb_read got: %ld, expected: %d, errno: %d\n", read, xfer, errno);
if (ret) {
return read;
} else {
// assume ERROR_INVALID_HANDLE indicates we are disconnected
if (errno == ERROR_INVALID_HANDLE)
usb_kick(handle_.get());
break;
}
// else we timed out - try again
}
} else {
DBG("usb_read NULL handle\n");
SetLastError(ERROR_INVALID_HANDLE);
}
DBG("usb_read failed: %d\n", errno);
return -1;
}
int usb_read(usb_handle* handle, void* data, int len) {
unsigned long time_out = 0;
unsigned long read = 0;
int err = 0;
int orig_len = len;
D("usb_read %d", len);
if (nullptr == handle) {
D("usb_read was passed NULL handle");
err = EINVAL;
goto fail;
}
while (len == orig_len) {
if (!AdbReadEndpointSync(handle->adb_read_pipe, data, len, &read, time_out)) {
D("AdbReadEndpointSync failed: %s",
android::base::SystemErrorCodeToString(GetLastError()).c_str());
err = EIO;
goto fail;
}
D("usb_read got: %ld, expected: %d", read, len);
data = (char*)data + read;
len -= read;
}
return orig_len - len;
fail:
// Any failure should cause us to kick the device instead of leaving it a
// zombie state with potential to hang.
if (nullptr != handle) {
D("Kicking device due to error in usb_read");
usb_kick(handle);
}
D("usb_read failed");
errno = err;
return -1;
}
int usb_read(usb_handle *handle, void* data, int len) {
unsigned long time_out = 500 + len * 8;
unsigned long read = 0;
int ret;
DBG("usb_read %d\n", len);
if (NULL != handle) {
while (1) {
int xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len;
ret = AdbReadEndpointSync(handle->adb_read_pipe,
(void*)data,
(unsigned long)xfer,
&read,
time_out);
errno = GetLastError();
DBG("usb_read got: %ld, expected: %d, errno: %d\n", read, xfer, errno);
if (ret) {
return read;
} else if (errno != ERROR_SEM_TIMEOUT) {
// assume ERROR_INVALID_HANDLE indicates we are disconnected
if (errno == ERROR_INVALID_HANDLE)
usb_kick(handle);
break;
}
// else we timed out - try again
}
} else {
DBG("usb_read NULL handle\n");
SetLastError(ERROR_INVALID_HANDLE);
}
DBG("usb_read failed: %d\n", errno);
return -1;
}
bool DeviceHandShake(ADBAPIHANDLE adb_interface) {
// Get interface name
char interf_name[512];
unsigned long name_size = sizeof(interf_name);
if (!AdbGetInterfaceName(adb_interface, interf_name, &name_size, true)) {
printf("\nDeviceHandShake: AdbGetInterfaceName returned error %u",
GetLastError());
return false;
}
printf("\n\nDeviceHandShake on %s", interf_name);
char* ser_num = NULL;
name_size = 0;
if (!AdbGetSerialNumber(adb_interface, ser_num, &name_size, true)) {
ser_num = reinterpret_cast<char*>(malloc(name_size));
if (NULL != ser_num) {
if (!AdbGetSerialNumber(adb_interface, ser_num, &name_size, true)) {
printf("\n AdbGetSerialNumber returned error %u", GetLastError());
AdbCloseHandle(adb_interface);
return false;
}
printf("\nInterface serial number is %s", ser_num);
free(ser_num);
}
}
// Get default read endpoint
ADBAPIHANDLE adb_read = AdbOpenDefaultBulkReadEndpoint(adb_interface,
AdbOpenAccessTypeReadWrite,
AdbOpenSharingModeReadWrite);
if (NULL == adb_read) {
printf("\n AdbOpenDefaultBulkReadEndpoint returned error %u", GetLastError());
return false;
}
// Get default write endpoint
ADBAPIHANDLE adb_write = AdbOpenDefaultBulkWriteEndpoint(adb_interface,
AdbOpenAccessTypeReadWrite,
AdbOpenSharingModeReadWrite);
if (NULL == adb_write) {
printf("\n AdbOpenDefaultBulkWriteEndpoint returned error %u", GetLastError());
AdbCloseHandle(adb_read);
return false;
}
// Send connect message
message msg_send;
msg_send.command = A_CNXN;
msg_send.arg0 = A_VERSION;
msg_send.arg1 = MAX_PAYLOAD;
msg_send.data_length = 0;
msg_send.data_crc32 = 0;
msg_send.magic = msg_send.command ^ 0xffffffff;
ULONG written_bytes = 0;
bool write_res = AdbWriteEndpointSync(adb_write, &msg_send, sizeof(msg_send), &written_bytes, 500);
if (!write_res) {
printf("\n AdbWriteEndpointSync returned error %u", GetLastError());
AdbCloseHandle(adb_write);
AdbCloseHandle(adb_read);
return false;
}
// Receive handshake
message msg_rcv;
ULONG read_bytes = 0;
bool read_res = AdbReadEndpointSync(adb_read, &msg_rcv, sizeof(msg_rcv), &read_bytes, 512);
if (!read_res) {
printf("\n AdbReadEndpointSync returned error %u", GetLastError());
AdbCloseHandle(adb_write);
AdbCloseHandle(adb_read);
return false;
}
printf("\n Read handshake: %u bytes received", read_bytes);
char* cmd_ansi = reinterpret_cast<char*>(&msg_rcv.command);
printf("\n command = %08X (%c%c%c%c)", msg_rcv.command,
cmd_ansi[0], cmd_ansi[1], cmd_ansi[2], cmd_ansi[3]);
printf("\n arg0 = %08X", msg_rcv.arg0);
printf("\n arg1 = %08X", msg_rcv.arg1);
printf("\n data_length = %u", msg_rcv.data_length);
printf("\n data_crc32 = %08X", msg_rcv.data_crc32);
printf("\n magic = %08X", msg_rcv.magic);
if (0 != msg_rcv.data_length) {
char* buf = reinterpret_cast<char*>(malloc(msg_rcv.data_length));
read_res = AdbReadEndpointSync(adb_read, buf, msg_rcv.data_length, &read_bytes, 512);
if (!read_res) {
printf("\n AdbReadEndpointSync (data) returned error %u", GetLastError());
free(buf);
AdbCloseHandle(adb_write);
AdbCloseHandle(adb_read);
return false;
}
for (ULONG n = 0; n < read_bytes; n++) {
if (0 == (n % 16))
printf("\n ");
printf("%02X ", buf[n]);
}
printf("\n %s", buf);
delete buf;
}
AdbCloseHandle(adb_write);
AdbCloseHandle(adb_read);
return true;
}
