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// SPDX-License-Identifier: GPL-2.0
/* implements Android specific functions */
#include "dive.h"
#include "display.h"
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#include <libusb.h>
#include <errno.h>
#include <unistd.h>
#include <QtAndroidExtras/QtAndroidExtras>
#include <QtAndroidExtras/QAndroidJniObject>
#include <QtAndroid>
#define FTDI_VID 0x0403
#define USB_SERVICE "usb"
extern "C" {
const char android_system_divelist_default_font[] = "Roboto";
const char *system_divelist_default_font = android_system_divelist_default_font;
double system_divelist_default_font_size = -1;
int get_usb_fd(uint16_t idVendor, uint16_t idProduct);
void subsurface_OS_pref_setup(void)
{
// Abusing this function to get a decent place where we can wire in
// our open callback into libusb
#ifdef libusb_android_open_callback_func
libusb_set_android_open_callback(get_usb_fd);
#elif __ANDROID__
#error we need libusb_android_open_callback
#endif
}
bool subsurface_ignore_font(const char *font)
{
// there are no old default fonts that we would want to ignore
return false;
}
void subsurface_user_info(struct user_info *user)
{ /* Encourage use of at least libgit2-0.20 */ }
static const char *system_default_path_append(const char *append)
{
// Qt appears to find a working path for us - let's just go with that
QString path = QStandardPaths::standardLocations(QStandardPaths::DataLocation).first();
if (append)
path += QString("/%1").arg(append);
return strdup(qPrintable(path));
}
const char *system_default_directory(void)
{
static const char *path = NULL;
if (!path)
path = system_default_path_append(NULL);
return path;
}
const char *system_default_filename(void)
{
static const char *filename = "subsurface.xml";
static const char *path = NULL;
if (!path)
path = system_default_path_append(filename);
return path;
}
int enumerate_devices(device_callback_t callback, void *userdata, int dc_type)
{
/* FIXME: we need to enumerate in some other way on android */
/* qtserialport maybee? */
return -1;
}
/**
* Get the file descriptor of first available matching device attached to usb in android.
*
* returns a fd to the device, or -1 and errno is set.
*/
int get_usb_fd(uint16_t idVendor, uint16_t idProduct)
{
int i;
jint fd, vendorid, productid;
QAndroidJniObject usbName, usbDevice;
// Get the current main activity of the application.
QAndroidJniObject activity = QtAndroid::androidActivity();
QAndroidJniObject usb_service = QAndroidJniObject::fromString(USB_SERVICE);
// Get UsbManager from activity
QAndroidJniObject usbManager = activity.callObjectMethod("getSystemService", "(Ljava/lang/String;)Ljava/lang/Object;", usb_service.object());
// Get a HashMap<Name, UsbDevice> of all USB devices attached to Android
QAndroidJniObject deviceMap = usbManager.callObjectMethod("getDeviceList", "()Ljava/util/HashMap;");
jint num_devices = deviceMap.callMethod<jint>("size", "()I");
if (num_devices == 0) {
// No USB device is attached.
return -1;
}
// Iterate over all the devices and find the first available FTDI device.
QAndroidJniObject keySet = deviceMap.callObjectMethod("keySet", "()Ljava/util/Set;");
QAndroidJniObject iterator = keySet.callObjectMethod("iterator", "()Ljava/util/Iterator;");
for (i = 0; i < num_devices; i++) {
usbName = iterator.callObjectMethod("next", "()Ljava/lang/Object;");
usbDevice = deviceMap.callObjectMethod ("get", "(Ljava/lang/Object;)Ljava/lang/Object;", usbName.object());
vendorid = usbDevice.callMethod<jint>("getVendorId", "()I");
productid = usbDevice.callMethod<jint>("getProductId", "()I");
if(vendorid == idVendor && productid == idProduct) // Found the requested device
break;
}
if (i == num_devices) {
// No device found.
errno = ENOENT;
return -1;
}
jboolean hasPermission = usbManager.callMethod<jboolean>("hasPermission", "(Landroid/hardware/usb/UsbDevice;)Z", usbDevice.object());
if (!hasPermission) {
// You do not have permission to use the usbDevice.
// Please remove and reinsert the USB device.
// Could also give an dialogbox asking for permission.
errno = EPERM;
return -1;
}
// An device is present and we also have permission to use the device.
// Open the device and get its file descriptor.
QAndroidJniObject usbDeviceConnection = usbManager.callObjectMethod("openDevice", "(Landroid/hardware/usb/UsbDevice;)Landroid/hardware/usb/UsbDeviceConnection;", usbDevice.object());
if (usbDeviceConnection.object() == NULL) {
// Some error occurred while opening the device. Exit.
errno = EINVAL;
return -1;
}
// Finally get the required file descriptor.
fd = usbDeviceConnection.callMethod<jint>("getFileDescriptor", "()I");
if (fd == -1) {
// The device is not opened. Some error.
errno = ENODEV;
return -1;
}
return fd;
}
/* NOP wrappers to comform with windows.c */
int subsurface_rename(const char *path, const char *newpath)
{
return rename(path, newpath);
}
int subsurface_open(const char *path, int oflags, mode_t mode)
{
return open(path, oflags, mode);
}
FILE *subsurface_fopen(const char *path, const char *mode)
{
return fopen(path, mode);
}
void *subsurface_opendir(const char *path)
{
return (void *)opendir(path);
}
int subsurface_access(const char *path, int mode)
{
return access(path, mode);
}
int subsurface_stat(const char* path, struct stat* buf)
{
return stat(path, buf);
}
struct zip *subsurface_zip_open_readonly(const char *path, int flags, int *errorp)
{
return zip_open(path, flags, errorp);
}
int subsurface_zip_close(struct zip *zip)
{
return zip_close(zip);
}
/* win32 console */
void subsurface_console_init(void)
{
/* NOP */
}
void subsurface_console_exit(void)
{
/* NOP */
}
bool subsurface_user_is_root()
{
return false;
}
}
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