Add capability to register SDP record for Primary Services.
---
attrib/example.c | 29 +++++++++-
src/attrib-server.c | 162 +++++++++++++++++++++++++++++++++++++++------------
src/attrib-server.h | 2 +
3 files changed, 155 insertions(+), 38 deletions(-)
diff --git a/attrib/example.c b/attrib/example.c
index 1911912..f0648e4 100644
--- a/attrib/example.c
+++ b/attrib/example.c
@@ -59,6 +59,9 @@
#define FMT_KILOGRAM_UUID 0xA010
#define FMT_HANGING_UUID 0xA011
+#define SDP_RECORD_COUNT 10
+uint32_t sdp_handles[SDP_RECORD_COUNT];
+
static int register_attributes(void)
{
const char *desc_out_temp = "Outside Temperature";
@@ -77,6 +80,7 @@ static int register_attributes(void)
uint8_t atval[256];
uuid_t uuid;
int len;
+ int i = 0;
/* Battery state service: primary service definition */
sdp_uuid16_create(&uuid, GATT_PRIM_SVC_UUID);
@@ -101,6 +105,11 @@ static int register_attributes(void)
atval[1] = 0x00;
attrib_db_add(0x0111, &uuid, ATT_NONE, ATT_AUTHENTICATION, atval, 2);
+ /* Add an SDP record for the above service */
+ sdp_handles[i] = attrib_create_sdp(0x0100, "Battery State Service");
+ if (sdp_handles[i])
+ i++;
+
/* Thermometer: primary service definition */
sdp_uuid16_create(&uuid, GATT_PRIM_SVC_UUID);
att_put_u16(THERM_HUMIDITY_SVC_UUID, &atval[0]);
@@ -116,7 +125,8 @@ static int register_attributes(void)
/* Thermometer: Include */
att_put_u16(0x0550, &atval[0]);
att_put_u16(0x0568, &atval[2]);
- attrib_db_add(0x0202, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, 4);
+ att_put_u16(VENDOR_SPECIFIC_SVC_UUID, &atval[4]);
+ attrib_db_add(0x0202, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, 6);
/* Thermometer: temperature characteristic */
sdp_uuid16_create(&uuid, GATT_CHARAC_UUID);
@@ -173,6 +183,11 @@ static int register_attributes(void)
strncpy((char *) atval, desc_out_hum, len);
attrib_db_add(0x0214, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, len);
+ /* Add an SDP record for the above service */
+ sdp_handles[i] = attrib_create_sdp(0x0200, "Thermometer");
+ if (sdp_handles[i])
+ i++;
+
/* Secondary Service: Manufacturer Service */
sdp_uuid16_create(&uuid, GATT_SND_SVC_UUID);
att_put_u16(MANUFACTURER_SVC_UUID, &atval[0]);
@@ -299,6 +314,11 @@ static int register_attributes(void)
strncpy((char *) atval, desc_weight, len);
attrib_db_add(0x0685, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, len);
+ /* Add an SDP record for the above service */
+ sdp_handles[i] = attrib_create_sdp(0x0680, "Weight Service");
+ if (sdp_handles[i])
+ i++;
+
return 0;
}
@@ -309,4 +329,11 @@ int server_example_init(void)
void server_example_exit(void)
{
+ int i;
+
+ for (i = 0; i < SDP_RECORD_COUNT; i++)
+ if (sdp_handles[i]) {
+ attrib_free_sdp(sdp_handles[i]);
+ sdp_handles[i] = 0;
+ }
}
diff --git a/src/attrib-server.c b/src/attrib-server.c
index 85b39a8..c6438bd 100644
--- a/src/attrib-server.c
+++ b/src/attrib-server.c
@@ -70,7 +70,8 @@ struct group_elem {
static GIOChannel *l2cap_io = NULL;
static GIOChannel *le_io = NULL;
static GSList *clients = NULL;
-static uint32_t sdp_handle = 0;
+static uint32_t gatt_sdp_handle = 0;
+static uint32_t gap_sdp_handle = 0;
static uuid_t prim_uuid = {
.type = SDP_UUID16,
@@ -81,14 +82,19 @@ static uuid_t snd_uuid = {
.value.uuid16 = GATT_SND_SVC_UUID
};
-static sdp_record_t *server_record_new(void)
+static sdp_record_t *server_record_new(uuid_t *uuid, uint16_t start, uint16_t end)
{
- sdp_list_t *svclass_id, *apseq, *proto[2], *profiles, *root, *aproto;
+ sdp_list_t *svclass_id, *apseq, *proto[2], *root, *aproto;
uuid_t root_uuid, proto_uuid, gatt_uuid, l2cap;
- sdp_profile_desc_t profile;
sdp_record_t *record;
sdp_data_t *psm, *sh, *eh;
- uint16_t lp = GATT_PSM, start = 0x0001, end = 0xffff;
+ uint16_t lp = GATT_PSM;
+
+ if (uuid == NULL)
+ return NULL;
+
+ if (start > end)
+ return NULL;
record = sdp_record_alloc();
if (record == NULL)
@@ -99,17 +105,10 @@ static sdp_record_t *server_record_new(void)
sdp_set_browse_groups(record, root);
sdp_list_free(root, NULL);
- sdp_uuid16_create(&gatt_uuid, GENERIC_ATTRIB_SVCLASS_ID);
- svclass_id = sdp_list_append(NULL, &gatt_uuid);
+ svclass_id = sdp_list_append(NULL, uuid);
sdp_set_service_classes(record, svclass_id);
sdp_list_free(svclass_id, NULL);
- sdp_uuid16_create(&profile.uuid, GENERIC_ATTRIB_PROFILE_ID);
- profile.version = 0x0100;
- profiles = sdp_list_append(NULL, &profile);
- sdp_set_profile_descs(record, profiles);
- sdp_list_free(profiles, NULL);
-
sdp_uuid16_create(&l2cap, L2CAP_UUID);
proto[0] = sdp_list_append(NULL, &l2cap);
psm = sdp_data_alloc(SDP_UINT16, &lp);
@@ -127,11 +126,6 @@ static sdp_record_t *server_record_new(void)
aproto = sdp_list_append(NULL, apseq);
sdp_set_access_protos(record, aproto);
- sdp_set_info_attr(record, "Generic Attribute Profile", "BlueZ", NULL);
-
- sdp_set_url_attr(record, "http://www.bluez.org/";,
- "http://www.bluez.org/";, "http://www.bluez.org/";);
-
sdp_set_service_id(record, gatt_uuid);
sdp_data_free(psm);
@@ -176,6 +170,40 @@ static uint8_t att_check_reqs(struct gatt_channel *channel, uint8_t opcode,
return 0;
}
+static struct attribute *find_primary_range(uint16_t start, uint16_t *end)
+{
+ struct attribute *a, *attrib = NULL;
+ GSList *l;
+ gboolean found = FALSE;
+
+ if (end == NULL)
+ return NULL;
+
+ for (l = database; l; l = l->next) {
+ a = l->data;
+
+ if (a->handle < start)
+ continue;
+
+ if ((a->handle == start) &&
+ sdp_uuid_cmp(&a->uuid, &prim_uuid) == 0) {
+ found = TRUE;
+ *end = start;
+ attrib = a;
+ continue;
+ } else if (!found)
+ break;
+
+ if (sdp_uuid_cmp(&a->uuid, &prim_uuid) == 0 ||
+ sdp_uuid_cmp(&a->uuid, &snd_uuid) == 0)
+ break;
+ else
+ *end = a->handle;
+ }
+
+ return attrib;
+}
+
static uint16_t read_by_group(struct gatt_channel *channel, uint16_t start,
uint16_t end, uuid_t *uuid,
uint8_t *pdu, int len)
@@ -607,7 +635,7 @@ static uint16_t write_value(struct gatt_channel *channel, uint16_t handle,
static uint16_t mtu_exchange(struct gatt_channel *channel, uint16_t mtu,
uint8_t *pdu, int len)
{
- channel->mtu = MIN(mtu, ATT_MAX_MTU);
+ channel->mtu = MIN(mtu, channel->mtu);
return enc_mtu_resp(channel->mtu, pdu, len);
}
@@ -794,7 +822,7 @@ static void confirm_event(GIOChannel *io, void *user_data)
return;
}
-static void register_core_services(void)
+static gboolean register_core_services(void)
{
uint8_t atval[256];
uuid_t uuid;
@@ -820,17 +848,37 @@ static void register_core_services(void)
/* TODO: Implement Appearance characteristic. It is mandatory for
* Peripheral/Central GAP roles. */
+ gap_sdp_handle = attrib_create_sdp(0x0001, "Generic Access Profile");
+
+ if (gap_sdp_handle == 0) {
+ error("Failed to register GAP service record");
+ goto failed;
+ }
/* GATT service: primary service definition */
sdp_uuid16_create(&uuid, GATT_PRIM_SVC_UUID);
att_put_u16(GENERIC_ATTRIB_PROFILE_ID, &atval[0]);
attrib_db_add(0x0010, &uuid, ATT_NONE, ATT_NOT_PERMITTED, atval, 2);
+
+ gatt_sdp_handle = attrib_create_sdp(0x0010,
+ "Generic Attribute Profile");
+ if (gatt_sdp_handle == 0) {
+ error("Failed to register GATT service record");
+ goto failed;
+ }
+
+ return TRUE;
+
+failed:
+ if (gap_sdp_handle)
+ remove_record_from_server(gap_sdp_handle);
+
+ return FALSE;
}
int attrib_server_init(void)
{
GError *gerr = NULL;
- sdp_record_t *record;
/* BR/EDR socket */
l2cap_io = bt_io_listen(BT_IO_L2CAP, NULL, confirm_event,
@@ -846,21 +894,8 @@ int attrib_server_init(void)
return -1;
}
- record = server_record_new();
- if (record == NULL) {
- error("Unable to create GATT service record");
+ if (!register_core_services())
goto failed;
- }
-
- if (add_record_to_server(BDADDR_ANY, record) < 0) {
- error("Failed to register GATT service record");
- sdp_record_free(record);
- goto failed;
- }
-
- sdp_handle = record->handle;
-
- register_core_services();
if (!main_opts.le)
return 0;
@@ -919,8 +954,61 @@ void attrib_server_exit(void)
g_slist_free(clients);
- if (sdp_handle)
- remove_record_from_server(sdp_handle);
+ if (gatt_sdp_handle)
+ remove_record_from_server(gatt_sdp_handle);
+
+ if (gap_sdp_handle)
+ remove_record_from_server(gap_sdp_handle);
+}
+
+uint32_t attrib_create_sdp(uint16_t handle, const char *name)
+{
+ sdp_record_t *record;
+ struct attribute *a;
+ uint16_t end = 0;
+ uuid_t svc;
+
+ a = find_primary_range(handle, &end);
+
+ if (a == NULL)
+ goto failed;
+
+ if (a->len == 2) {
+ svc.type = SDP_UUID16;
+ svc.value.uuid16 = att_get_u16(a->data);
+ } else if (a->len == 16) {
+ svc.type = SDP_UUID128;
+ memcpy(&svc.value.uuid128, a->data, sizeof(uint128_t));
+ } else
+ goto failed;
+
+ record = server_record_new(&svc, handle, end);
+
+ if (record == NULL)
+ goto failed;
+
+ if (name)
+ sdp_set_info_attr(record, name, "BlueZ", NULL);
+
+ if (svc.type == SDP_UUID16 &&
+ svc.value.uuid16 == GENERIC_ACCESS_PROFILE_ID) {
+ sdp_set_url_attr(record, "http://www.bluez.org/";,
+ "http://www.bluez.org/";,
+ "http://www.bluez.org/";);
+ }
+
+ if (add_record_to_server(BDADDR_ANY, record) < 0)
+ sdp_record_free(record);
+ else
+ return record->handle;
+
+failed:
+ return 0;
+}
+
+void attrib_free_sdp(uint32_t sdp_handle)
+{
+ remove_record_from_server(sdp_handle);
}
int attrib_db_add(uint16_t handle, uuid_t *uuid, int read_reqs, int write_reqs,
diff --git a/src/attrib-server.h b/src/attrib-server.h
index ba90ff4..34236e4 100644
--- a/src/attrib-server.h
+++ b/src/attrib-server.h
@@ -30,3 +30,5 @@ int attrib_db_add(uint16_t handle, uuid_t *uuid, int read_reqs, int write_reqs,
int attrib_db_update(uint16_t handle, uuid_t *uuid, const uint8_t *value,
int len);
int attrib_db_del(uint16_t handle);
+uint32_t attrib_create_sdp(uint16_t handle, const char *name);
+void attrib_free_sdp(uint32_t sdp_handle);
--
1.7.1
--
Brian Gix
bgix@xxxxxxxxxxxxxx
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum
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