/* add or remove a ACL for a given uid from all matching devices */
static void apply_acl_to_devices(uid_t uid, int add)
{
struct udev *udev;
struct udev_enumerate *enumerate;
struct udev_list_entry *list_entry;
/* iterate over all devices tagged with ACL_SET */
udev = udev_new();
enumerate = udev_enumerate_new(udev);
udev_enumerate_add_match_tag(enumerate, "udev-acl");
udev_enumerate_scan_devices(enumerate);
udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
struct udev_device *device;
const char *node;
device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
udev_list_entry_get_name(list_entry));
if (device == NULL)
continue;
node = udev_device_get_devnode(device);
if (node == NULL)
continue;
set_facl(node, uid, add);
udev_device_unref(device);
}
udev_enumerate_unref(enumerate);
udev_unref(udev);
}
/////////////////////////////////////////////////////////////////////////////
/// enumerate existing devices
void DeviceMonitor::enumDevices_( ) {
assert( dev_context_ );
// create udev enumeration interface
std::tr1::shared_ptr< udev_enumerate > dev_enum( udev_enumerate_new( dev_context_ ), &udev_enumerate_unref );
// only interested in scsi_device's
udev_enumerate_add_match_subsystem( dev_enum.get(), "block" );
udev_enumerate_add_match_property( dev_enum.get(), "ID_BUS", "ata" );
udev_enumerate_scan_devices( dev_enum.get() ); // start
//- enumerate list
udev_list_entry* list_entry = udev_enumerate_get_list_entry( dev_enum.get() );
for ( ; list_entry; list_entry = udev_list_entry_get_next( list_entry ) ) {
// retrieve device
std::tr1::shared_ptr< udev_device > device(
udev_device_new_from_syspath(
udev_enumerate_get_udev( dev_enum.get() ),
udev_list_entry_get_name( list_entry )
), &udev_device_unref
);
if ( !device ) continue;
if (!acceptDevice_(device.get())) continue;
int led_idx = scsiHostIndex_(device.get());
if (led_idx < 0) continue;
if (debug || verbose > 1) std::cout << " device: " << udev_device_get_syspath(device.get()) << "\n led: " << led_idx << "\n";
leds_idx_[num_disks_] = led_idx;
stats_files_[num_disks_] = std::string( udev_device_get_syspath(device.get()) );
stats_files_[num_disks_].append( "/stat" );
// make sure it's there and we can open it
std::ifstream stats;
stats.open( stats_files_[num_disks_].c_str() );
if( !stats )
{
std::cout << " Couldn't open stats " << stats_files_[num_disks_] << "\n";
continue;
}
else
stats.close();
++num_disks_;
deviceAdded_( device.get() );
}
}
int Storage::enumerate_mmcblk_devices(struct udev *udev)
{
struct udev_enumerate *udev_enumerate;
qDebug() << Q_FUNC_INFO << ": enumerate 'block' devices";
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
udev_enumerate_add_match_subsystem(udev_enumerate,"block");
udev_enumerate_scan_devices(udev_enumerate);
struct udev_list_entry *list_entry;
udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate))
{
struct udev_device *device;
device = udev_device_new_from_syspath(udev_enumerate_get_udev(udev_enumerate),
udev_list_entry_get_name(list_entry));
if (device != NULL) {
QString sysname("/dev/");
sysname += QString(udev_device_get_sysname(device));
if (sysname.contains(QRegExp("mmcblk[1-9]\\d*")) || sysname.contains(QRegExp("mmcblk[1-9]")))
{
QString path = udev_device_get_devpath(device);
QString parent = udev_device_get_devpath( udev_device_get_parent (device));
QString action = "add";
QString devtype = udev_device_get_devtype(device);
qDebug() << "Enumerate device " << path << ":" << action;
qDebug() << " Got Device";
qDebug() << " Node: " << udev_device_get_devnode(device);
qDebug() << " Subsystem: "<< udev_device_get_subsystem(device);
qDebug() << " Devtype: " << devtype;
qDebug() << " Action: " << action;
qDebug() << " Sysname: " << sysname;
qDebug() << " sysnum: " << udev_device_get_sysnum (device);
qDebug() << " parent: " << parent;
processRemovableUdevEvents(devtype, path, sysname, action);
}
udev_device_unref(device);
}
}
udev_enumerate_unref(udev_enumerate);
return 0;
}
static void exec_list(struct udev_enumerate *udev_enumerate, const char *action)
{
struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
struct udev_list_entry *entry;
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(udev_enumerate)) {
char filename[UTIL_PATH_SIZE];
int fd;
if (verbose)
printf("%s\n", udev_list_entry_get_name(entry));
if (dry_run)
continue;
util_strscpyl(filename, sizeof(filename), udev_list_entry_get_name(entry), "/uevent", NULL);
fd = open(filename, O_WRONLY);
if (fd < 0) {
dbg(udev, "error on opening %s: %m\n", filename);
continue;
}
if (write(fd, action, strlen(action)) < 0)
info(udev, "error writing '%s' to '%s': %m\n", action, filename);
close(fd);
}
static int usb_dongle_probe_print_list(struct udev_enumerate *enumerate)
{
struct udev_list_entry *list_entry;
unsigned int vid, pid;
int ret = -1;
udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
struct udev_device *device;
device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
udev_list_entry_get_name(list_entry));
if (device != NULL) {
mylog_info("device: '%s' (%s)\n",
udev_device_get_syspath(device),
udev_device_get_subsystem(device));
get_vid_pid(device, &vid, &pid);
ret = wlan_driver_match(vid, pid, wlan_driver_add_callback);
udev_device_unref(device);
if (!ret)
break;
}
}
return ret;
}
jobjectArray getusb_firmware_version(JNIEnv *env, jint usbvid_to_match, jint usbpid_to_match, jstring serial_number) {
int x = 0;
int vid = 0;
int pid = 0;
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *sysattr_val;
const char *path;
struct udev_device *udev_device;
char *endptr;
char buffer[128];
const char* serial = NULL;
const char *prop_val;
struct jstrarray_list list = {0};
jstring usb_dev_info;
jclass strClass = NULL;
jobjectArray usbDevicesFwVerFound = NULL;
if(serial_number != NULL) {
serial = (*env)->GetStringUTFChars(env, serial_number, NULL);
if((serial == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
throw_serialcom_exception(env, 3, 0, E_GETSTRUTFCHARSTR);
return NULL;
}
}
init_jstrarraylist(&list, 10);
/* libudev is reference counted. Memory is freed when counts reach to zero. */
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "usb");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
if(strcmp("usb_device", udev_device_get_devtype(udev_device)) == 0) {
/* match vid */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idVendor");
if(sysattr_val != NULL) {
vid = 0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16);
if(vid != usbvid_to_match) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
/* match pid */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idProduct");
if(sysattr_val != NULL) {
pid = 0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16);
if(pid != usbpid_to_match) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
/* match serial number if requested by application */
if (serial != NULL) {
sysattr_val = udev_device_get_sysattr_value(udev_device, "serial");
if(sysattr_val != NULL) {
if(strcasecmp(sysattr_val, serial) != 0) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
}
/* reaching here means that this is the device whose firmware version application need to know. */
prop_val = udev_device_get_property_value(udev_device, "ID_REVISION");
memset(buffer, '\0', sizeof(buffer));
snprintf(buffer, 128, "%d", (0x0000FFFF & (int)strtol(prop_val, &endptr, 16)));
usb_dev_info = (*env)->NewStringUTF(env, buffer);
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
free_jstrarraylist(&list);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}
insert_jstrarraylist(&list, usb_dev_info);
}
udev_device_unref(udev_device);
}
/*
* Finds information about USB devices using operating system specific facilities and API.
* The sequence of entries in array must match with what java layer expect (6 informations
* per USB device). If a particular USB attribute is not set in descriptor or can not be
* obtained "---" is placed in its place.
*
* Return array of USB device's information found, empty array if no USB device is found,
* NULL if an error occurs (additionally throws exception).
*/
jobjectArray list_usb_devices(JNIEnv *env, jint vendor_to_match) {
int x = 0;
struct jstrarray_list list = {0};
jstring usb_dev_info;
jclass strClass = NULL;
jobjectArray usbDevicesFound = NULL;
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *sysattr_val;
const char *path;
struct udev_device *udev_device;
char *endptr;
init_jstrarraylist(&list, 100);
/* libudev is reference counted. Memory is freed when counts reach to zero. */
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "usb");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
if(strcmp("usb_device", udev_device_get_devtype(udev_device)) == 0) {
/* USB-IF vendor ID */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idVendor");
if(sysattr_val != NULL) {
if(vendor_to_match != 0) {
/* we need to apply filter for identify specific vendor */
if(vendor_to_match != (0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16))) {
udev_device_unref(udev_device);
continue;
}
}
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
/* USB product ID */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idProduct");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
/* SERIAL NUMBER */
sysattr_val = udev_device_get_sysattr_value(udev_device, "serial");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
/* PRODUCT */
sysattr_val = udev_device_get_sysattr_value(udev_device, "product");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
/* MANUFACTURER */
sysattr_val = udev_device_get_sysattr_value(udev_device, "manufacturer");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
/* LOCATION (constructed) TODO*/
sysattr_val = udev_device_get_sysattr_value(udev_device, "busnum");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
if((usb_dev_info == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
return linux_listusb_clean_throw_exp(env, 1, NULL, &list, udev_device, enumerator, udev_ctx);
}
insert_jstrarraylist(&list, usb_dev_info);
}
udev_device_unref(udev_device);
}
void CUDevProvider::GetDisks(VECSOURCES& disks, bool removable)
{
// enumerate existing block devices
struct udev_enumerate *u_enum = udev_enumerate_new(m_udev);
if (u_enum == NULL)
{
fprintf(stderr, "Error: udev_enumerate_new(udev)\n");
return;
}
udev_enumerate_add_match_subsystem(u_enum, "block");
udev_enumerate_add_match_property(u_enum, "DEVTYPE", "disk");
udev_enumerate_add_match_property(u_enum, "DEVTYPE", "partition");
udev_enumerate_scan_devices(u_enum);
struct udev_list_entry *u_list_ent;
struct udev_list_entry *u_first_list_ent;
u_first_list_ent = udev_enumerate_get_list_entry(u_enum);
udev_list_entry_foreach(u_list_ent, u_first_list_ent)
{
const char *name = udev_list_entry_get_name(u_list_ent);
struct udev *context = udev_enumerate_get_udev(u_enum);
struct udev_device *device = udev_device_new_from_syspath(context, name);
if (device == NULL)
continue;
// filter out devices that are not mounted
const char *mountpoint = get_mountpoint(udev_device_get_devnode(device));
if (!mountpoint)
{
udev_device_unref(device);
continue;
}
// filter out things mounted on /tmp
if (strstr(mountpoint, "/tmp"))
{
udev_device_unref(device);
continue;
}
// look for usb devices on the usb bus, or mounted on /media/usbX (sdcards) or cdroms
const char *bus = udev_device_get_property_value(device, "ID_BUS");
const char *cdrom = udev_device_get_property_value(device, "ID_CDROM");
if (removable &&
((bus && strstr(bus, "usb")) ||
(cdrom && strstr(cdrom,"1")) ||
(mountpoint && strstr(mountpoint, "/media/"))))
{
const char *label = udev_device_get_property_value(device, "ID_FS_LABEL");
if (!label)
label = URIUtils::GetFileName(mountpoint);
CMediaSource share;
share.strName = label;
share.strPath = mountpoint;
share.m_ignore = true;
share.m_iDriveType = CMediaSource::SOURCE_TYPE_REMOVABLE;
AddOrReplace(disks, share);
}
udev_device_unref(device);
}
udev_enumerate_unref(u_enum);
}
/*
* Find the name of the driver which is currently associated with the given HID device.
*
* A HID device can be on usb, bluetooth or pseudo. For Linux we walk down the
* sysfs tree until a driver is found for the given device node.
*/
jstring linux_find_driver_for_given_hiddevice(JNIEnv *env, jstring hidDevNode) {
const char* hid_name_to_match = NULL;
jstring driver_name = NULL;
int check_for_parent = -1;
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *prop_val_driver_name;
const char *device_node;
const char *path;
struct udev_device *udev_device;
struct udev_device *parent_device;
hid_name_to_match = (*env)->GetStringUTFChars(env, hidDevNode, NULL);
if((hid_name_to_match == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
throw_serialcom_exception(env, 3, 0, E_GETSTRUTFCHARSTR);
return NULL;
}
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "hidraw");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
/* from the sysfs filename create a udev_device object representing it. */
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
/* get the device node for this udev device. */
device_node = udev_device_get_devnode(udev_device);
/* If the device node name matches what we are looking for get driver for it.
* if we fail to get driver name than return empty string (prop_val_driver_name
* will be NULL when control reaches at the end of this function). */
if(device_node != NULL) {
if(strcmp(hid_name_to_match, device_node) == 0) {
prop_val_driver_name = udev_device_get_driver(udev_device);
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}
check_for_parent = -1;
}else {
check_for_parent = 1;
}
if(check_for_parent == 1) {
parent_device = udev_device_get_parent(udev_device);
if(parent_device != NULL) {
prop_val_driver_name = udev_device_get_driver(parent_device);
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}else {
/* if both the parent and driver found, return driver name to caller. */
check_for_parent = -1;
}
}else {
/* if the parent is found but driver not found then analyze next parent device. */
check_for_parent = 1;
}
}else {
/* if the parent does not exist, make no more attempts to analyze parent devices further down the tree. */
check_for_parent = -1;
}
}
if(check_for_parent == 1) {
parent_device = udev_device_get_parent(parent_device );
if(parent_device != NULL) {
prop_val_driver_name = udev_device_get_driver(parent_device);
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}else {
check_for_parent = -1;
}
}else {
check_for_parent = 1;
}
}else {
check_for_parent = -1;
}
}
if(check_for_parent == 1) {
parent_device = udev_device_get_parent(parent_device);
if(parent_device != NULL) {
prop_val_driver_name = udev_device_get_driver(parent_device);
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}else {
check_for_parent = -1;
}
}else {
check_for_parent = 1;
}
}else {
check_for_parent = -1;
}
}
if(check_for_parent == 1) {
parent_device = udev_device_get_parent(udev_device);
if(parent_device != NULL) {
prop_val_driver_name = udev_device_get_driver(parent_device );
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}else {
check_for_parent = -1;
}
}else {
check_for_parent = 1;
}
}else {
check_for_parent = -1;
}
}
if(check_for_parent == 1) {
parent_device = udev_device_get_parent(parent_device);
if(parent_device != NULL) {
prop_val_driver_name = udev_device_get_driver(parent_device);
if(prop_val_driver_name != NULL) {
driver_name = (*env)->NewStringUTF(env, prop_val_driver_name);
if((driver_name == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
(*env)->ExceptionClear(env);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
(*env)->ReleaseStringUTFChars(env, hidDevNode, hid_name_to_match);
throw_serialcom_exception(env, 3, 0, E_NEWSTRUTFSTR);
return NULL;
}
}
}
}
/* whether prop_val_driver_name is NULL (return empty string) or not
* (return driver name found), no more iteration is needed. */
udev_device_unref(udev_device);
break;
}
}
/* released only after desired property value has been saved to some
* other memory region like one got from NewStringUTF(). */
udev_device_unref(udev_device);
}
/*
* get the current latency timer value for ftdi devices.
* return value read on success or -1 if any error occurs.
*/
jint get_latency_timer_value(JNIEnv *env, jstring comPortName) {
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *device_path;
const char *device_node;
const char *path;
struct udev_device *udev_device;
const char *com_port_to_match = NULL;
char buffer[512];
int fd = 0;
int ret = 0;
char *endptr;
jint timer_value = 0;
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "tty");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
com_port_to_match = (*env)->GetStringUTFChars(env, comPortName, NULL);
if((com_port_to_match == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
throw_serialcom_exception(env, 3, 0, E_GETSTRUTFCHARSTR);
return -1;
}
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
/* match the device node, if matched get device path, and create absolute path to
* latency file and read its value */
device_node = udev_device_get_devnode(udev_device);
if(device_node != NULL) {
if(strcmp(device_node, com_port_to_match) == 0) {
device_path = udev_device_get_devpath(udev_device);
if(device_path != NULL) {
memset(buffer, '\0', sizeof(buffer));
snprintf(buffer, 512, "/sys%s/device/latency_timer", device_path);
errno = 0;
fd = open(buffer, O_RDONLY);
if(fd < 0) {
(*env)->ReleaseStringUTFChars(env, comPortName, com_port_to_match);
throw_serialcom_exception(env, 1, errno, NULL);
return -1;
}
memset(buffer, '\0', sizeof(buffer));
errno = 0;
ret = read(fd, buffer, 512);
if(ret < 0) {
(*env)->ReleaseStringUTFChars(env, comPortName, com_port_to_match);
throw_serialcom_exception(env, 1, errno, NULL);
return -1;
}
close(fd);
timer_value = (jint) strtol(buffer, &endptr, 10);
(*env)->ReleaseStringUTFChars(env, comPortName, com_port_to_match);
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
return timer_value;
}
}
}
udev_device_unref(udev_device);
}
/*
* Find device nodes (like COMxx, ttyUSBxx etc) assigned by operating system to the USB-UART bridge/converter(s)
* from the USB device attributes.
*
* The USB strings are Unicode, UCS2 encoded, but the strings returned from udev_device_get_sysattr_value() are UTF-8 encoded.
* GetStringUTFChars() returns in modified UTF-8 encoding.
*/
jobjectArray vcp_node_from_usb_attributes(JNIEnv *env, jobject obj, jint usbvid_to_match, jint usbpid_to_match, jstring serial_num, jobject status) {
int x = 0;
struct jstrarray_list list = {0};
jclass strClass = NULL;
jobjectArray vcpPortsFound = NULL;
const char* serial_to_match = NULL;
jstring vcp_node;
#if defined (__linux__)
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *prop_val;
const char *path;
struct udev_device *udev_device;
int usb_vid;
int usb_pid;
char *endptr;
int matched;
#endif
#if defined (__APPLE__)
kern_return_t kr;
CFDictionaryRef matching_dictionary = NULL;
io_iterator_t iterator = 0;
io_service_t usb_dev_obj;
CFNumberRef num_ref;
CFStringRef str_ref;
int result;
char hexcharbuffer[5];
/* For storing USB descriptor attributes string like manufacturer, product, serial number etc.
* in any encoding 1024 is sufficient. We prevented malloc() every time for every new attribute. */
char charbuffer[1024];
#endif
init_jstrarraylist(&list, 50);
if(serial_num != NULL) {
serial_to_match = (*env)->GetStringUTFChars(env, serial_num, NULL);
if(serial_to_match == NULL) {
/* handle error */
}
}
#if defined (__linux__)
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "tty");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
matched = 0;
prop_val = udev_device_get_property_value(udev_device, "ID_VENDOR_ID");
if(prop_val != NULL) {
usb_vid = 0x0000FFFF & (int) strtol(prop_val, &endptr, 16);
if(usb_vid == usbvid_to_match) {
matched = 1;
}
}
if(matched == 0) {
udev_device_unref(udev_device);
continue;
}
matched = 0;
prop_val = udev_device_get_property_value(udev_device, "ID_MODEL_ID");
if(prop_val != NULL) {
usb_pid = 0x0000FFFF & (int) strtol(prop_val, &endptr, 16);
if(usb_pid == usbpid_to_match) {
matched = 1;
}
}
if(matched == 0) {
udev_device_unref(udev_device);
continue;
}
if(serial_to_match != NULL) {
matched = 0;
prop_val = udev_device_get_property_value(udev_device, "ID_SERIAL_SHORT");
if(prop_val != NULL) {
if(!strcasecmp(prop_val, serial_to_match)) {
matched = 1;
}
}
}
if(matched == 1) {
/* this device met all criteria, get dev node for this */
prop_val = udev_device_get_property_value(udev_device, "DEVNAME");
if(prop_val != NULL) {
vcp_node = (*env)->NewStringUTF(env, prop_val);
if(vcp_node != NULL) {
insert_jstrarraylist(&list, vcp_node);
}
}
}
udev_device_unref(udev_device);
}
/*
* Finds information about USB devices using operating system specific facilities and API.
* The sequence of entries in array must match with what java layer expect. If a particular USB attribute
* is not set in descriptor or can not be obtained "---" is placed in its place.
*/
jobjectArray list_usb_devices(JNIEnv *env, jobject obj, jobject status, jint vendor_to_match) {
int x = 0;
struct jstrarray_list list = {0};
jstring usb_dev_info;
jclass strClass = NULL;
jobjectArray usbDevicesFound = NULL;
#if defined (__linux__)
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *sysattr_val;
const char *path;
struct udev_device *udev_device;
char *endptr;
#endif
#if defined (__APPLE__)
kern_return_t kr;
CFDictionaryRef matching_dictionary = NULL;
io_iterator_t iterator = 0;
io_service_t usb_dev_obj;
CFNumberRef num_ref;
CFStringRef str_ref;
int result;
char hexcharbuffer[5];
/* For storing USB descriptor attributes string like manufacturer, product, serial number etc.
* in any encoding 1024 is sufficient. We prevented malloc() every time for every new attribute. */
char charbuffer[1024];
#endif
init_jstrarraylist(&list, 100);
#if defined (__linux__)
/* libudev is reference counted. Memory is freed when counts reach to zero. */
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "usb");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
if(strcmp("usb_device", udev_device_get_devtype(udev_device)) == 0) {
sysattr_val = udev_device_get_sysattr_value(udev_device, "idVendor");
if(sysattr_val != NULL) {
if(vendor_to_match != 0) {
/* we need to apply filter for identify specific vendor */
if(vendor_to_match != (0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16))) {
udev_device_unref(udev_device);
continue;
}
}
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
insert_jstrarraylist(&list, usb_dev_info);
sysattr_val = udev_device_get_sysattr_value(udev_device, "idProduct");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
insert_jstrarraylist(&list, usb_dev_info);
sysattr_val = udev_device_get_sysattr_value(udev_device, "serial");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
insert_jstrarraylist(&list, usb_dev_info);
sysattr_val = udev_device_get_sysattr_value(udev_device, "product");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
insert_jstrarraylist(&list, usb_dev_info);
sysattr_val = udev_device_get_sysattr_value(udev_device, "manufacturer");
if(sysattr_val != NULL) {
usb_dev_info = (*env)->NewStringUTF(env, sysattr_val);
}else {
usb_dev_info = (*env)->NewStringUTF(env, "---");
}
insert_jstrarraylist(&list, usb_dev_info);
}
udev_device_unref(udev_device);
}
io_device_iterator::io_device_iterator(udev_enumerate* uenum)
: m_uenum(uenum)
{
m_udev = udev_enumerate_get_udev(m_uenum);
reset();
}
void CUDevProvider::GetDisks(VECSOURCES& disks, bool removable)
{
// enumerate existing block devices
struct udev_enumerate *u_enum = udev_enumerate_new(m_udev);
if (u_enum == NULL)
{
fprintf(stderr, "Error: udev_enumerate_new(udev)\n");
return;
}
udev_enumerate_add_match_subsystem(u_enum, "block");
udev_enumerate_add_match_property(u_enum, "DEVTYPE", "disk");
udev_enumerate_add_match_property(u_enum, "DEVTYPE", "partition");
udev_enumerate_scan_devices(u_enum);
struct udev_list_entry *u_list_ent;
struct udev_list_entry *u_first_list_ent;
u_first_list_ent = udev_enumerate_get_list_entry(u_enum);
udev_list_entry_foreach(u_list_ent, u_first_list_ent)
{
const char *name = udev_list_entry_get_name(u_list_ent);
struct udev *context = udev_enumerate_get_udev(u_enum);
struct udev_device *device = udev_device_new_from_syspath(context, name);
if (device == NULL)
continue;
// filter out devices that are not mounted
const char *mountpoint = get_mountpoint(udev_device_get_devnode(device));
if (!mountpoint)
{
udev_device_unref(device);
continue;
}
// filter out root partition
if (strcmp(mountpoint, "/") == 0)
{
udev_device_unref(device);
continue;
}
// filter out things mounted on /tmp
if (strstr(mountpoint, "/tmp"))
{
udev_device_unref(device);
continue;
}
// look for devices on the usb bus, or mounted on */media/ (sdcards), or optical devices
const char *bus = udev_device_get_property_value(device, "ID_BUS");
const char *optical = udev_device_get_property_value(device, "ID_CDROM"); // matches also DVD, Blu-ray
bool isRemovable = ((bus && strstr(bus, "usb")) ||
(optical && strstr(optical,"1")) ||
(mountpoint && strstr(mountpoint, "/media/")));
// filter according to requested device type
if (removable != isRemovable)
{
udev_device_unref(device);
continue;
}
const char *udev_label = udev_device_get_property_value(device, "ID_FS_LABEL");
std::string label;
if (udev_label)
label = udev_label;
else
label = URIUtils::GetFileName(mountpoint);
CMediaSource share;
share.strName = label;
share.strPath = mountpoint;
share.m_ignore = true;
if (isRemovable)
{
if (optical)
share.m_iDriveType = CMediaSource::SOURCE_TYPE_DVD;
else
share.m_iDriveType = CMediaSource::SOURCE_TYPE_REMOVABLE;
}
else
share.m_iDriveType = CMediaSource::SOURCE_TYPE_LOCAL;
disks.push_back(share);
udev_device_unref(device);
}
udev_enumerate_unref(u_enum);
}
/*
* Finds if a USB device whose VID, PID and serial number is given is connected to system
* or not using platform specific APIs.
*
* Returns 1 if device is connected, returns 0 if not connected, -1 if an error occurs.
*/
jint is_usb_dev_connected(JNIEnv *env, jint usbvid_to_match, jint usbpid_to_match, jstring serial_number) {
int vid = 0;
int pid = 0;
struct udev *udev_ctx;
struct udev_enumerate *enumerator;
struct udev_list_entry *devices, *dev_list_entry;
const char *sysattr_val;
const char *path;
struct udev_device *udev_device;
char *endptr;
const char* serial = NULL;
if(serial_number != NULL) {
serial = (*env)->GetStringUTFChars(env, serial_number, NULL);
if((serial == NULL) || ((*env)->ExceptionOccurred(env) != NULL)) {
throw_serialcom_exception(env, 3, 0, E_GETSTRUTFCHARSTR);
return -1;
}
}
/* libudev is reference counted. Memory is freed when counts reach to zero. */
udev_ctx = udev_new();
enumerator = udev_enumerate_new(udev_ctx);
udev_enumerate_add_match_subsystem(enumerator, "usb");
udev_enumerate_scan_devices(enumerator);
devices = udev_enumerate_get_list_entry(enumerator);
udev_list_entry_foreach(dev_list_entry, devices) {
path = udev_list_entry_get_name(dev_list_entry);
udev_device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerator), path);
if(udev_device == NULL) {
continue;
}
if(strcmp("usb_device", udev_device_get_devtype(udev_device)) == 0) {
/* match vid */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idVendor");
if(sysattr_val != NULL) {
vid = 0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16);
if(vid != usbvid_to_match) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
/* match pid */
sysattr_val = udev_device_get_sysattr_value(udev_device, "idProduct");
if(sysattr_val != NULL) {
pid = 0x0000FFFF & (int)strtol(sysattr_val, &endptr, 16);
if(pid != usbpid_to_match) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
/* match serial number if requested by application */
if (serial != NULL) {
sysattr_val = udev_device_get_sysattr_value(udev_device, "serial");
if(sysattr_val != NULL) {
if(strcasecmp(sysattr_val, serial) != 0) {
udev_device_unref(udev_device);
continue;
}
}else {
udev_device_unref(udev_device);
continue;
}
}
/* reaching here means device is connected to system at present which matches given criteria. */
udev_device_unref(udev_device);
udev_enumerate_unref(enumerator);
udev_unref(udev_ctx);
return 1;
}
udev_device_unref(udev_device);
}