shared/ad: Add support for arbritary type
This adds APIs to include data of arbritary type as long as it is not
of a type which blacklisted due to being handled already or it is
considered to safe to be set by an application.
diff --git a/src/shared/ad.c b/src/shared/ad.c
index 255794d..f0e62ce 100644
--- a/src/shared/ad.c
+++ b/src/shared/ad.c
@@ -37,6 +37,7 @@
struct queue *manufacturer_data;
struct queue *solicit_uuids;
struct queue *service_data;
+ struct queue *data;
};
struct bt_ad *bt_ad_new(void)
@@ -48,6 +49,7 @@
ad->manufacturer_data = queue_new();
ad->solicit_uuids = queue_new();
ad->service_data = queue_new();
+ ad->data = queue_new();
ad->appearance = UINT16_MAX;
return bt_ad_ref(ad);
@@ -94,6 +96,14 @@
return manuf->manufacturer_id == manuf_id;
}
+static void data_destroy(void *data)
+{
+ struct bt_ad_data *ad = data;
+
+ free(ad->data);
+ free(ad);
+}
+
void bt_ad_unref(struct bt_ad *ad)
{
if (!ad)
@@ -110,6 +120,8 @@
queue_destroy(ad->service_data, uuid_destroy);
+ queue_destroy(ad->data, data_destroy);
+
free(ad->name);
free(ad);
@@ -203,6 +215,24 @@
return len;
}
+static size_t data_length(struct queue *queue)
+{
+ size_t length = 0;
+ const struct queue_entry *entry;
+
+ entry = queue_get_entries(queue);
+
+ while (entry) {
+ struct bt_ad_data *data = entry->data;
+
+ length += 1 + 1 + data->len;
+
+ entry = entry->next;
+ }
+
+ return length;
+}
+
static size_t calculate_length(struct bt_ad *ad)
{
size_t length = 0;
@@ -219,6 +249,8 @@
length += ad->appearance != UINT16_MAX ? 4 : 0;
+ length += data_length(ad->data);
+
return length;
}
@@ -258,21 +290,21 @@
static void serialize_service_uuids(struct queue *uuids, uint8_t *buf,
uint8_t *pos)
{
- serialize_uuids(uuids, BT_UUID16, EIR_UUID16_ALL, buf, pos);
+ serialize_uuids(uuids, BT_UUID16, BT_AD_UUID16_ALL, buf, pos);
- serialize_uuids(uuids, BT_UUID32, EIR_UUID32_ALL, buf, pos);
+ serialize_uuids(uuids, BT_UUID32, BT_AD_UUID32_ALL, buf, pos);
- serialize_uuids(uuids, BT_UUID128, EIR_UUID128_ALL, buf, pos);
+ serialize_uuids(uuids, BT_UUID128, BT_AD_UUID128_ALL, buf, pos);
}
static void serialize_solicit_uuids(struct queue *uuids, uint8_t *buf,
uint8_t *pos)
{
- serialize_uuids(uuids, BT_UUID16, EIR_SOLICIT16, buf, pos);
+ serialize_uuids(uuids, BT_UUID16, BT_AD_SOLICIT16, buf, pos);
- serialize_uuids(uuids, BT_UUID32, EIR_SOLICIT32, buf, pos);
+ serialize_uuids(uuids, BT_UUID32, BT_AD_SOLICIT32, buf, pos);
- serialize_uuids(uuids, BT_UUID128, EIR_SOLICIT128, buf, pos);
+ serialize_uuids(uuids, BT_UUID128, BT_AD_SOLICIT128, buf, pos);
}
static void serialize_manuf_data(struct queue *manuf_data, uint8_t *buf,
@@ -285,7 +317,7 @@
buf[(*pos)++] = data->len + 2 + 1;
- buf[(*pos)++] = EIR_MANUFACTURER_DATA;
+ buf[(*pos)++] = BT_AD_MANUFACTURER_DATA;
bt_put_le16(data->manufacturer_id, buf + (*pos));
@@ -312,13 +344,13 @@
switch (uuid_len) {
case 2:
- buf[(*pos)++] = EIR_SVC_DATA16;
+ buf[(*pos)++] = BT_AD_SERVICE_DATA16;
break;
case 4:
- buf[(*pos)++] = EIR_SVC_DATA32;
+ buf[(*pos)++] = BT_AD_SERVICE_DATA32;
break;
case 16:
- buf[(*pos)++] = EIR_SVC_DATA128;
+ buf[(*pos)++] = BT_AD_SERVICE_DATA128;
break;
}
@@ -340,14 +372,14 @@
static void serialize_name(const char *name, uint8_t *buf, uint8_t *pos)
{
int len;
- uint8_t type = EIR_NAME_COMPLETE;
+ uint8_t type = BT_AD_NAME_COMPLETE;
if (!name)
return;
len = strlen(name);
if (len > MAX_ADV_DATA_LEN - (*pos + 2)) {
- type = EIR_NAME_SHORT;
+ type = BT_AD_NAME_SHORT;
len = MAX_ADV_DATA_LEN - (*pos + 2);
}
@@ -364,12 +396,30 @@
return;
buf[(*pos)++] = sizeof(value) + 1;
- buf[(*pos)++] = EIR_GAP_APPEARANCE;
+ buf[(*pos)++] = BT_AD_GAP_APPEARANCE;
bt_put_le16(value, buf + (*pos));
*pos += 2;
}
+static void serialize_data(struct queue *queue, uint8_t *buf, uint8_t *pos)
+{
+ const struct queue_entry *entry = queue_get_entries(queue);
+
+ while (entry) {
+ struct bt_ad_data *data = entry->data;
+
+ buf[(*pos)++] = data->len + 1;
+ buf[(*pos)++] = data->type;
+
+ memcpy(buf + *pos, data->data, data->len);
+
+ *pos += data->len;
+
+ entry = entry->next;
+ }
+}
+
uint8_t *bt_ad_generate(struct bt_ad *ad, size_t *length)
{
uint8_t *adv_data;
@@ -399,6 +449,8 @@
serialize_appearance(ad->appearance, adv_data, &pos);
+ serialize_data(ad->data, adv_data, &pos);
+
return adv_data;
}
@@ -756,3 +808,156 @@
ad->appearance = UINT16_MAX;
}
+
+static bool data_type_match(const void *data, const void *user_data)
+{
+ const struct bt_ad_data *a = data;
+ const uint8_t type = PTR_TO_UINT(user_data);
+
+ return a->type == type;
+}
+
+static uint8_t type_blacklist[] = {
+ BT_AD_FLAGS,
+ BT_AD_UUID16_SOME,
+ BT_AD_UUID16_ALL,
+ BT_AD_UUID32_SOME,
+ BT_AD_UUID32_ALL,
+ BT_AD_UUID128_SOME,
+ BT_AD_UUID128_ALL,
+ BT_AD_NAME_SHORT,
+ BT_AD_NAME_COMPLETE,
+ BT_AD_TX_POWER,
+ BT_AD_CLASS_OF_DEV,
+ BT_AD_SSP_HASH,
+ BT_AD_SSP_RANDOMIZER,
+ BT_AD_DEVICE_ID,
+ BT_AD_SMP_TK,
+ BT_AD_SMP_OOB_FLAGS,
+ BT_AD_SLAVE_CONN_INTERVAL,
+ BT_AD_SOLICIT16,
+ BT_AD_SOLICIT128,
+ BT_AD_SERVICE_DATA16,
+ BT_AD_PUBLIC_ADDRESS,
+ BT_AD_RANDOM_ADDRESS,
+ BT_AD_GAP_APPEARANCE,
+ BT_AD_ADVERTISING_INTERVAL,
+ BT_AD_LE_DEVICE_ADDRESS,
+ BT_AD_LE_ROLE,
+ BT_AD_SSP_HASH_P256,
+ BT_AD_SSP_RANDOMIZER_P256,
+ BT_AD_SOLICIT32,
+ BT_AD_SERVICE_DATA32,
+ BT_AD_SERVICE_DATA128,
+ BT_AD_LE_SC_CONFIRM_VALUE,
+ BT_AD_LE_SC_RANDOM_VALUE,
+ BT_AD_LE_SUPPORTED_FEATURES,
+ BT_AD_CHANNEL_MAP_UPDATE_IND,
+ BT_AD_MESH_PROV,
+ BT_AD_MESH_DATA,
+ BT_AD_MESH_BEACON,
+ BT_AD_3D_INFO_DATA,
+ BT_AD_MANUFACTURER_DATA,
+};
+
+bool bt_ad_add_data(struct bt_ad *ad, uint8_t type, void *data, size_t len)
+{
+ struct bt_ad_data *new_data;
+ size_t i;
+
+ if (!ad)
+ return false;
+
+ if (len > (MAX_ADV_DATA_LEN - 2))
+ return false;
+
+ new_data = queue_find(ad->data, data_type_match, UINT_TO_PTR(type));
+ if (new_data) {
+ if (new_data->len == len && !memcmp(new_data->data, data, len))
+ return false;
+ new_data->data = realloc(new_data->data, len);
+ memcpy(new_data->data, data, len);
+ new_data->len = len;
+ return true;
+ }
+
+ for (i = 0; i < sizeof(type_blacklist); i++) {
+ if (type == type_blacklist[i])
+ return false;
+ }
+
+ new_data = new0(struct bt_ad_data, 1);
+ new_data->type = type;
+ new_data->data = malloc(len);
+ if (!new_data->data) {
+ free(new_data);
+ return false;
+ }
+
+ memcpy(new_data->data, data, len);
+ new_data->len = len;
+
+ if (queue_push_tail(ad->data, new_data))
+ return true;
+
+ data_destroy(new_data);
+
+ return false;
+}
+
+static bool data_match(const void *data, const void *user_data)
+{
+ const struct bt_ad_data *d1 = data;
+ const struct bt_ad_data *d2 = user_data;
+
+ if (d1->type != d2->type)
+ return false;
+
+ if (d1->len != d2->len)
+ return false;
+
+ return !memcmp(d1->data, d2->data, d1->len);
+}
+
+bool bt_ad_has_data(struct bt_ad *ad, const struct bt_ad_data *data)
+{
+ if (!ad)
+ return false;
+
+ if (!data)
+ return !queue_isempty(ad->data);
+
+ return queue_find(ad->data, data_match, data);
+}
+
+void bt_ad_foreach_data(struct bt_ad *ad, bt_ad_func_t func, void *user_data)
+{
+ if (!ad)
+ return;
+
+ queue_foreach(ad->data, func, user_data);
+}
+
+bool bt_ad_remove_data(struct bt_ad *ad, uint8_t type)
+{
+ struct bt_ad_data *data;
+
+ if (!ad)
+ return false;
+
+ data = queue_remove_if(ad->data, data_type_match, UINT_TO_PTR(type));
+ if (!data)
+ return false;
+
+ data_destroy(data);
+
+ return true;
+}
+
+void bt_ad_clear_data(struct bt_ad *ad)
+{
+ if (!ad)
+ return;
+
+ queue_remove_all(ad->data, NULL, NULL, data_destroy);
+}
diff --git a/src/shared/ad.h b/src/shared/ad.h
index f0e3b81..8d70532 100644
--- a/src/shared/ad.h
+++ b/src/shared/ad.h
@@ -27,6 +27,50 @@
#include "lib/bluetooth.h"
#include "lib/uuid.h"
+#define BT_AD_FLAGS 0x01
+#define BT_AD_UUID16_SOME 0x02
+#define BT_AD_UUID16_ALL 0x03
+#define BT_AD_UUID32_SOME 0x04
+#define BT_AD_UUID32_ALL 0x05
+#define BT_AD_UUID128_SOME 0x06
+#define BT_AD_UUID128_ALL 0x07
+#define BT_AD_NAME_SHORT 0x08
+#define BT_AD_NAME_COMPLETE 0x09
+#define BT_AD_TX_POWER 0x0a
+#define BT_AD_CLASS_OF_DEV 0x0d
+#define BT_AD_SSP_HASH 0x0e
+#define BT_AD_SSP_RANDOMIZER 0x0f
+#define BT_AD_DEVICE_ID 0x10
+#define BT_AD_SMP_TK 0x10
+#define BT_AD_SMP_OOB_FLAGS 0x11
+#define BT_AD_SLAVE_CONN_INTERVAL 0x12
+#define BT_AD_SOLICIT16 0x14
+#define BT_AD_SOLICIT128 0x15
+#define BT_AD_SERVICE_DATA16 0x16
+#define BT_AD_PUBLIC_ADDRESS 0x17
+#define BT_AD_RANDOM_ADDRESS 0x18
+#define BT_AD_GAP_APPEARANCE 0x19
+#define BT_AD_ADVERTISING_INTERVAL 0x1a
+#define BT_AD_LE_DEVICE_ADDRESS 0x1b
+#define BT_AD_LE_ROLE 0x1c
+#define BT_AD_SSP_HASH_P256 0x1d
+#define BT_AD_SSP_RANDOMIZER_P256 0x1e
+#define BT_AD_SOLICIT32 0x1f
+#define BT_AD_SERVICE_DATA32 0x20
+#define BT_AD_SERVICE_DATA128 0x21
+#define BT_AD_LE_SC_CONFIRM_VALUE 0x22
+#define BT_AD_LE_SC_RANDOM_VALUE 0x23
+#define BT_AD_URI 0x24
+#define BT_AD_INDOOR_POSITIONING 0x25
+#define BT_AD_TRANSPORT_DISCOVERY 0x26
+#define BT_AD_LE_SUPPORTED_FEATURES 0x27
+#define BT_AD_CHANNEL_MAP_UPDATE_IND 0x28
+#define BT_AD_MESH_PROV 0x29
+#define BT_AD_MESH_DATA 0x2a
+#define BT_AD_MESH_BEACON 0x2b
+#define BT_AD_3D_INFO_DATA 0x3d
+#define BT_AD_MANUFACTURER_DATA 0xff
+
typedef void (*bt_ad_func_t)(void *data, void *user_data);
struct bt_ad;
@@ -39,6 +83,12 @@
struct bt_ad_service_data {
bt_uuid_t uuid;
+ size_t len;
+ void *data;
+};
+
+struct bt_ad_data {
+ uint8_t type;
uint8_t *data;
size_t len;
};
@@ -96,3 +146,13 @@
bool bt_ad_add_appearance(struct bt_ad *ad, uint16_t appearance);
void bt_ad_clear_appearance(struct bt_ad *ad);
+
+bool bt_ad_add_data(struct bt_ad *ad, uint8_t type, void *data, size_t len);
+
+bool bt_ad_has_data(struct bt_ad *ad, const struct bt_ad_data *data);
+
+void bt_ad_foreach_data(struct bt_ad *ad, bt_ad_func_t func, void *user_data);
+
+bool bt_ad_remove_data(struct bt_ad *ad, uint8_t type);
+
+void bt_ad_clear_data(struct bt_ad *ad);
