GAttrib *g_attrib_new(GIOChannel *io)
{
struct _GAttrib *attrib;
uint16_t omtu;
g_io_channel_set_encoding(io, NULL, NULL);
g_io_channel_set_buffered(io, FALSE);
attrib = g_try_new0(struct _GAttrib, 1);
if (attrib == NULL)
return NULL;
attrib->io = g_io_channel_ref(io);
attrib->queue = g_queue_new();
attrib->read_watch = g_io_add_watch(attrib->io,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
received_data, attrib);
if (bt_io_get(attrib->io, BT_IO_L2CAP, NULL,
BT_IO_OPT_OMTU, &omtu,
BT_IO_OPT_INVALID)) {
if (omtu == 0 || omtu > ATT_MAX_MTU)
omtu = ATT_MAX_MTU;
} else
omtu = ATT_DEFAULT_LE_MTU;
attrib->buf = g_malloc0(omtu);
attrib->buflen = omtu;
return g_attrib_ref(attrib);
}
guint gatt_discover_char(GAttrib *attrib, uint16_t start, uint16_t end,
bt_uuid_t *uuid, gatt_cb_t func,
gpointer user_data)
{
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(attrib, &buflen);
struct discover_char *dc;
bt_uuid_t type_uuid;
guint16 plen;
bt_uuid16_create(&type_uuid, GATT_CHARAC_UUID);
plen = enc_read_by_type_req(start, end, &type_uuid, buf, buflen);
if (plen == 0)
return 0;
dc = g_try_new0(struct discover_char, 1);
if (dc == NULL)
return 0;
dc->attrib = g_attrib_ref(attrib);
dc->cb = func;
dc->user_data = user_data;
dc->end = end;
dc->uuid = g_memdup(uuid, sizeof(bt_uuid_t));
return g_attrib_send(attrib, 0, buf, plen, char_discovered_cb,
dc, NULL);
}
bool bt_scpp_attach(struct bt_scpp *scan, void *attrib)
{
bt_uuid_t iwin_uuid, refresh_uuid;
if (!scan || scan->attrib || !scan->primary)
return false;
scan->attrib = g_attrib_ref(attrib);
if (scan->iwhandle)
write_scan_params(scan->attrib, scan->iwhandle, scan->interval,
scan->window);
else {
bt_uuid16_create(&iwin_uuid, SCAN_INTERVAL_WIN_UUID);
discover_char(scan, scan->attrib, scan->primary->range.start,
scan->primary->range.end, &iwin_uuid,
iwin_discovered_cb, scan);
}
if (scan->refresh_handle)
scan->refresh_cb_id = g_attrib_register(scan->attrib,
ATT_OP_HANDLE_NOTIFY, scan->refresh_handle,
refresh_value_cb, scan, NULL);
else {
bt_uuid16_create(&refresh_uuid, SCAN_REFRESH_UUID);
discover_char(scan, scan->attrib, scan->primary->range.start,
scan->primary->range.end, &refresh_uuid,
refresh_discovered_cb, scan);
}
return true;
}
guint gatt_read_char(GAttrib *attrib, uint16_t handle, GAttribResultFunc func,
gpointer user_data)
{
uint8_t *buf;
size_t buflen;
guint16 plen;
guint id;
struct read_long_data *long_read;
long_read = g_try_new0(struct read_long_data, 1);
if (long_read == NULL)
return 0;
long_read->attrib = g_attrib_ref(attrib);
long_read->func = func;
long_read->user_data = user_data;
long_read->handle = handle;
buf = g_attrib_get_buffer(attrib, &buflen);
plen = enc_read_req(handle, buf, buflen);
id = g_attrib_send(attrib, 0, buf, plen, read_char_helper,
long_read, read_long_destroy);
if (id == 0) {
g_attrib_unref(long_read->attrib);
g_free(long_read);
} else {
__sync_fetch_and_add(&long_read->ref, 1);
long_read->id = id;
}
return id;
}
static gboolean disconnect_timeout(gpointer data)
{
struct _GAttrib *attrib = data;
struct command *c;
g_attrib_ref(attrib);
c = g_queue_pop_head(attrib->requests);
if (c == NULL)
goto done;
if (c->func)
c->func(ATT_ECODE_TIMEOUT, NULL, 0, c->user_data);
command_destroy(c);
while ((c = g_queue_pop_head(attrib->requests))) {
if (c->func)
c->func(ATT_ECODE_ABORTED, NULL, 0, c->user_data);
command_destroy(c);
}
done:
attrib->stale = true;
g_attrib_unref(attrib);
return FALSE;
}
guint gatt_discover_primary(GAttrib *attrib, bt_uuid_t *uuid, gatt_cb_t func,
gpointer user_data)
{
struct discover_primary *dp;
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(attrib, &buflen);
GAttribResultFunc cb;
guint16 plen;
plen = encode_discover_primary(0x0001, 0xffff, uuid, buf, buflen);
if (plen == 0)
return 0;
dp = g_try_new0(struct discover_primary, 1);
if (dp == NULL)
return 0;
dp->attrib = g_attrib_ref(attrib);
dp->cb = func;
dp->user_data = user_data;
if (uuid) {
dp->uuid = *uuid;
cb = primary_by_uuid_cb;
} else
cb = primary_all_cb;
return g_attrib_send(attrib, 0, buf, plen, cb, dp, NULL);
}
static void test_refcount(struct context *cxt, gconstpointer unused)
{
GAttrib *extra_ref;
int destroy_canary = 0;
g_attrib_set_destroy_function(cxt->att, destroy_canary_increment,
&destroy_canary);
extra_ref = g_attrib_ref(cxt->att);
g_assert(extra_ref == cxt->att);
g_assert(destroy_canary == 0);
g_attrib_unref(extra_ref);
g_assert(destroy_canary == 0);
g_attrib_unref(cxt->att);
g_assert(destroy_canary == 1);
/* Avoid a double-free from the teardown function */
cxt->att = NULL;
}
guint gatt_discover_desc(GAttrib *attrib, uint16_t start, uint16_t end,
bt_uuid_t *uuid, gatt_cb_t func,
gpointer user_data)
{
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(attrib, &buflen);
struct discover_desc *dd;
guint16 plen;
plen = enc_find_info_req(start, end, buf, buflen);
if (plen == 0)
return 0;
dd = g_try_new0(struct discover_desc, 1);
if (dd == NULL)
return 0;
dd->attrib = g_attrib_ref(attrib);
dd->cb = func;
dd->user_data = user_data;
dd->start = start;
dd->end = end;
dd->uuid = g_memdup(uuid, sizeof(bt_uuid_t));
dd->id = g_attrib_send(attrib, 0, buf, plen, desc_discovered_cb,
discover_desc_ref(dd), discover_desc_unref);
return dd->id;
}
static void cmd_char(int argcp, char **argvp)
{
int start = 0x0001;
int end = 0xffff;
if (conn_state != STATE_CONNECTED) {
printf("Command failed: disconnected\n");
goto done;
}
if (argcp > 1) {
start = strtohandle(argvp[1]);
if (start < 0) {
printf("Invalid start handle: %s\n", argvp[1]);
goto done;
}
}
if (argcp > 2) {
end = strtohandle(argvp[2]);
if (end < 0) {
printf("Invalid end handle: %s\n", argvp[2]);
goto done;
}
}
if (argcp > 3) {
bt_uuid_t uuid;
if (bt_string_to_uuid(&uuid, argvp[3]) < 0) {
printf("Invalid UUID\n");
goto done;
}
g_attrib_ref(attrib);
gatt_discover_char(attrib, start, end, &uuid, char_cb, NULL);
return;
}
g_attrib_ref(attrib);
gatt_discover_char(attrib, start, end, NULL, char_cb, NULL);
return;
done:
printf("\r%s", get_prompt());
fflush(stdout);
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct deviceinfo *d = user_data;
d->attrib = g_attrib_ref(attrib);
gatt_discover_char(d->attrib, d->svc_range->start, d->svc_range->end,
NULL, configure_deviceinfo_cb, d);
}
static void wake_up_sender(struct _GAttrib *attrib)
{
if (attrib->write_watch > 0)
return;
attrib = g_attrib_ref(attrib);
attrib->write_watch = g_io_add_watch_full(attrib->io,
G_PRIORITY_DEFAULT, G_IO_OUT,
can_write_data, attrib, destroy_sender);
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct heartrate *hr = user_data;
DBG("");
hr->attrib = g_attrib_ref(attrib);
gatt_discover_char(hr->attrib, hr->svc_range->start, hr->svc_range->end,
NULL, discover_char_cb, hr);
}
static void send_discover(GAttrib *attrib, gpointer user_data)
{
struct query_data *qchr = user_data;
struct gatt_service *gatt = qchr->gatt;
struct gatt_primary *prim = gatt->prim;
gatt->attrib = g_attrib_ref(attrib);
gatt_discover_char(gatt->attrib, prim->range.start, prim->range.end, NULL,
char_discovered_cb, qchr);
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct csc *csc = user_data;
DBG("");
csc->attrib = g_attrib_ref(attrib);
gatt_discover_char(csc->attrib, csc->svc_range->start,
csc->svc_range->end, NULL,
discover_char_cb, csc);
}
unsigned int gatt_find_included(GAttrib *attrib, uint16_t start, uint16_t end,
gatt_cb_t func, gpointer user_data)
{
struct included_discovery *isd;
isd = g_new0(struct included_discovery, 1);
isd->attrib = g_attrib_ref(attrib);
isd->end_handle = end;
isd->cb = func;
isd->user_data = user_data;
return find_included(isd, start);
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct heartrate *hr = user_data;
DBG("");
hr->attrib = g_attrib_ref(attrib);
hr->attionotid = g_attrib_register(hr->attrib, ATT_OP_HANDLE_NOTIFY,
notify_handler, hr, NULL);
gatt_discover_char(hr->attrib, hr->svc_range->start, hr->svc_range->end,
NULL, discover_char_cb, hr);
}
bool bt_hog_attach(struct bt_hog *hog, void *gatt)
{
struct gatt_primary *primary = hog->primary;
GSList *l;
if (hog->attrib)
return false;
hog->attrib = g_attrib_ref(gatt);
if (!primary) {
gatt_discover_primary(hog->attrib, NULL, primary_cb, hog);
return true;
}
if (hog->scpp)
bt_scpp_attach(hog->scpp, gatt);
if (hog->dis)
bt_dis_attach(hog->dis, gatt);
if (hog->bas)
bt_bas_attach(hog->bas, gatt);
for (l = hog->instances; l; l = l->next) {
struct bt_hog *instance = l->data;
bt_hog_attach(instance, gatt);
}
if (hog->reports == NULL) {
gatt_discover_char(hog->attrib, primary->range.start,
primary->range.end, NULL,
char_discovered_cb, hog);
return true;
}
for (l = hog->reports; l; l = l->next) {
struct report *r = l->data;
r->notifyid = g_attrib_register(hog->attrib,
ATT_OP_HANDLE_NOTIFY,
r->decl->value_handle,
report_value_cb, r, NULL);
}
return true;
}
GAttrib *g_attrib_new(GIOChannel *io, guint16 mtu, bool ext_signed)
{
gint fd;
GAttrib *attr;
if (!io)
return NULL;
fd = g_io_channel_unix_get_fd(io);
attr = new0(GAttrib, 1);
if (!attr)
return NULL;
g_io_channel_ref(io);
attr->io = io;
attr->att = bt_att_new(fd, ext_signed);
if (!attr->att)
goto fail;
bt_att_set_close_on_unref(attr->att, true);
g_io_channel_set_close_on_unref(io, FALSE);
if (!bt_att_set_mtu(attr->att, mtu))
goto fail;
attr->buf = malloc0(mtu);
attr->buflen = mtu;
if (!attr->buf)
goto fail;
attr->callbacks = queue_new();
if (!attr->callbacks)
goto fail;
attr->track_ids = queue_new();
if (!attr->track_ids)
goto fail;
return g_attrib_ref(attr);
fail:
free(attr->buf);
bt_att_unref(attr->att);
g_io_channel_unref(io);
free(attr);
return NULL;
}
bool bt_dis_attach(struct bt_dis *dis, void *attrib)
{
struct gatt_primary *primary = dis->primary;
if (dis->attrib || !primary)
return false;
dis->attrib = g_attrib_ref(attrib);
if (!dis->handle)
discover_char(dis, dis->attrib, primary->range.start,
primary->range.end, NULL,
configure_deviceinfo_cb, dis);
return true;
}
bool bt_bas_attach(struct bt_bas *bas, void *attrib)
{
if (!bas || bas->attrib || !bas->primary)
return false;
bas->attrib = g_attrib_ref(attrib);
if (bas->handle > 0)
return true;
discover_char(bas, bas->attrib, bas->primary->range.start,
bas->primary->range.end, NULL,
bas_discovered_cb, bas);
return true;
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct monitor *monitor = user_data;
monitor->attrib = g_attrib_ref(attrib);
if (monitor->enabled.linkloss)
write_alert_level(monitor);
if (monitor->enabled.pathloss)
read_tx_power(monitor);
if (monitor->immediatehandle == 0) {
if(monitor->enabled.pathloss || monitor->enabled.findme)
discover_immediate_handle(monitor);
} else if (monitor->fallbacklevel)
write_immediate_alert(monitor);
}
static void attio_connected(GAttrib *attrib, gpointer user_data)
{
struct gatt_service *gatt = user_data;
gatt->attrib = g_attrib_ref(attrib);
g_attrib_register(gatt->attrib, ATT_OP_HANDLE_NOTIFY,
events_handler, gatt, NULL);
g_attrib_register(gatt->attrib, ATT_OP_HANDLE_IND,
events_handler, gatt, NULL);
/*
* TODO : we do not support offline writing
*/
/*g_slist_foreach(gatt->offline_chars, offline_char_write, attrib);*/
INFO("%s connected", gatt->path);
}
GAttrib *g_attrib_new(GIOChannel *io)
{
struct _GAttrib *attrib;
uint16_t imtu;
uint16_t att_mtu;
uint16_t cid;
GError *gerr = NULL;
g_io_channel_set_encoding(io, NULL, NULL);
g_io_channel_set_buffered(io, FALSE);
bt_io_get(io, BT_IO_L2CAP, &gerr,
BT_IO_OPT_IMTU, &imtu,
BT_IO_OPT_CID, &cid,
BT_IO_OPT_INVALID);
if (gerr) {
error("%s", gerr->message);
g_error_free(gerr);
return NULL;
}
attrib = g_try_new0(struct _GAttrib, 1);
if (attrib == NULL)
return NULL;
att_mtu = (cid == ATT_CID) ? ATT_DEFAULT_LE_MTU : imtu;
attrib->buf = g_malloc0(att_mtu);
attrib->buflen = att_mtu;
attrib->io = g_io_channel_ref(io);
attrib->requests = g_queue_new();
attrib->responses = g_queue_new();
attrib->read_watch = g_io_add_watch(attrib->io,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
received_data, attrib);
return g_attrib_ref(attrib);
}
static void attio_connected_cb(GAttrib *attrib, gpointer user_data)
{
struct scan *scan = user_data;
bt_uuid_t iwin_uuid, refresh_uuid;
scan->attrib = g_attrib_ref(attrib);
if (scan->iwhandle) {
write_scan_params(scan->attrib, scan->iwhandle);
return;
}
bt_uuid16_create(&iwin_uuid, SCAN_INTERVAL_WIN_UUID);
bt_uuid16_create(&refresh_uuid, SCAN_REFRESH_UUID);
gatt_discover_char(scan->attrib, scan->range.start, scan->range.end,
&iwin_uuid, iwin_discovered_cb, scan);
gatt_discover_char(scan->attrib, scan->range.start, scan->range.end,
&refresh_uuid, refresh_discovered_cb, scan);
}
guint gatt_read_char_single(GAttrib *attrib, uint16_t handle, uint16_t offset,
GAttribResultFunc func, gpointer user_data)
{
uint8_t *buf;
size_t buflen;
guint16 plen;
guint id;
struct read_data *read;
read = g_try_new0(struct read_data, 1);
if (read == NULL)
return 0;
read->attrib = g_attrib_ref(attrib);
read->func = func;
read->user_data = user_data;
read->handle = handle;
read->offset = offset;
buf = g_attrib_get_buffer(attrib, &buflen);
if (!offset)
plen = enc_read_req(handle, buf, buflen);
else
plen = enc_read_blob_req(handle, offset, buf, buflen);
id = g_attrib_send(attrib, 0, buf, plen, read_char_helper,
read, read_destroy);
if (id == 0) {
g_attrib_unref(read->attrib);
g_free(read);
} else {
__sync_fetch_and_add(&read->ref, 1);
read->id = id;
}
return id;
}
