sdp.h

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/*
 * Copyright (c) 2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_CLASSIC_SDP_H_
#define ZEPHYR_INCLUDE_BLUETOOTH_CLASSIC_SDP_H_

 
#include <sys/types.h>
 
#include <zephyr/bluetooth/uuid.h>
#include <zephyr/bluetooth/conn.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 * All definitions are based on Bluetooth Assigned Numbers
 * of the Bluetooth Specification
 */

#define BT_SDP_SDP_SERVER_SVCLASS           0x1000 
#define BT_SDP_BROWSE_GRP_DESC_SVCLASS      0x1001 
#define BT_SDP_PUBLIC_BROWSE_GROUP          0x1002 
#define BT_SDP_SERIAL_PORT_SVCLASS          0x1101 
#define BT_SDP_LAN_ACCESS_SVCLASS           0x1102 
#define BT_SDP_DIALUP_NET_SVCLASS           0x1103 
#define BT_SDP_IRMC_SYNC_SVCLASS            0x1104 
#define BT_SDP_OBEX_OBJPUSH_SVCLASS         0x1105 
#define BT_SDP_OBEX_FILETRANS_SVCLASS       0x1106 
#define BT_SDP_IRMC_SYNC_CMD_SVCLASS        0x1107 
#define BT_SDP_HEADSET_SVCLASS              0x1108 
#define BT_SDP_CORDLESS_TELEPHONY_SVCLASS   0x1109 
#define BT_SDP_AUDIO_SOURCE_SVCLASS         0x110a 
#define BT_SDP_AUDIO_SINK_SVCLASS           0x110b 
#define BT_SDP_AV_REMOTE_TARGET_SVCLASS     0x110c 
#define BT_SDP_ADVANCED_AUDIO_SVCLASS       0x110d 
#define BT_SDP_AV_REMOTE_SVCLASS            0x110e 
#define BT_SDP_AV_REMOTE_CONTROLLER_SVCLASS 0x110f 
#define BT_SDP_INTERCOM_SVCLASS             0x1110 
#define BT_SDP_FAX_SVCLASS                  0x1111 
#define BT_SDP_HEADSET_AGW_SVCLASS          0x1112 
#define BT_SDP_WAP_SVCLASS                  0x1113 
#define BT_SDP_WAP_CLIENT_SVCLASS           0x1114 
#define BT_SDP_PANU_SVCLASS                 0x1115 
#define BT_SDP_NAP_SVCLASS                  0x1116 
#define BT_SDP_GN_SVCLASS                   0x1117 
#define BT_SDP_DIRECT_PRINTING_SVCLASS      0x1118 
#define BT_SDP_REFERENCE_PRINTING_SVCLASS   0x1119 
#define BT_SDP_IMAGING_SVCLASS              0x111a 
#define BT_SDP_IMAGING_RESPONDER_SVCLASS    0x111b 
#define BT_SDP_IMAGING_ARCHIVE_SVCLASS      0x111c 
#define BT_SDP_IMAGING_REFOBJS_SVCLASS      0x111d 
#define BT_SDP_HANDSFREE_SVCLASS            0x111e 
#define BT_SDP_HANDSFREE_AGW_SVCLASS        0x111f 
#define BT_SDP_DIRECT_PRT_REFOBJS_SVCLASS   0x1120 
#define BT_SDP_REFLECTED_UI_SVCLASS         0x1121 
#define BT_SDP_BASIC_PRINTING_SVCLASS       0x1122 
#define BT_SDP_PRINTING_STATUS_SVCLASS      0x1123 
#define BT_SDP_HID_SVCLASS                  0x1124 
#define BT_SDP_HCR_SVCLASS                  0x1125 
#define BT_SDP_HCR_PRINT_SVCLASS            0x1126 
#define BT_SDP_HCR_SCAN_SVCLASS             0x1127 
#define BT_SDP_CIP_SVCLASS                  0x1128 
#define BT_SDP_VIDEO_CONF_GW_SVCLASS        0x1129 
#define BT_SDP_UDI_MT_SVCLASS               0x112a 
#define BT_SDP_UDI_TA_SVCLASS               0x112b 
#define BT_SDP_AV_SVCLASS                   0x112c 
#define BT_SDP_SAP_SVCLASS                  0x112d 
#define BT_SDP_PBAP_PCE_SVCLASS             0x112e 
#define BT_SDP_PBAP_PSE_SVCLASS             0x112f 
#define BT_SDP_PBAP_SVCLASS                 0x1130 
#define BT_SDP_MAP_MSE_SVCLASS              0x1132 
#define BT_SDP_MAP_MCE_SVCLASS              0x1133 
#define BT_SDP_MAP_SVCLASS                  0x1134 
#define BT_SDP_GNSS_SVCLASS                 0x1135 
#define BT_SDP_GNSS_SERVER_SVCLASS          0x1136 
#define BT_SDP_MPS_SC_SVCLASS               0x113a 
#define BT_SDP_MPS_SVCLASS                  0x113b 
#define BT_SDP_PNP_INFO_SVCLASS             0x1200 
#define BT_SDP_GENERIC_NETWORKING_SVCLASS   0x1201 
#define BT_SDP_GENERIC_FILETRANS_SVCLASS    0x1202 
#define BT_SDP_GENERIC_AUDIO_SVCLASS        0x1203 
#define BT_SDP_GENERIC_TELEPHONY_SVCLASS    0x1204 
#define BT_SDP_UPNP_SVCLASS                 0x1205 
#define BT_SDP_UPNP_IP_SVCLASS              0x1206 
#define BT_SDP_UPNP_PAN_SVCLASS             0x1300 
#define BT_SDP_UPNP_LAP_SVCLASS             0x1301 
#define BT_SDP_UPNP_L2CAP_SVCLASS           0x1302 
#define BT_SDP_VIDEO_SOURCE_SVCLASS         0x1303 
#define BT_SDP_VIDEO_SINK_SVCLASS           0x1304 
#define BT_SDP_VIDEO_DISTRIBUTION_SVCLASS   0x1305 
#define BT_SDP_HDP_SVCLASS                  0x1400 
#define BT_SDP_HDP_SOURCE_SVCLASS           0x1401 
#define BT_SDP_HDP_SINK_SVCLASS             0x1402 
#define BT_SDP_GENERIC_ACCESS_SVCLASS       0x1800 
#define BT_SDP_GENERIC_ATTRIB_SVCLASS       0x1801 
#define BT_SDP_APPLE_AGENT_SVCLASS          0x2112 
 
#define BT_SDP_SERVER_RECORD_HANDLE 0x0000

#define BT_SDP_ATTR_RECORD_HANDLE               0x0000 
#define BT_SDP_ATTR_SVCLASS_ID_LIST             0x0001 
#define BT_SDP_ATTR_RECORD_STATE                0x0002 
#define BT_SDP_ATTR_SERVICE_ID                  0x0003 
#define BT_SDP_ATTR_PROTO_DESC_LIST             0x0004 
#define BT_SDP_ATTR_BROWSE_GRP_LIST             0x0005 
#define BT_SDP_ATTR_LANG_BASE_ATTR_ID_LIST      0x0006 
#define BT_SDP_ATTR_SVCINFO_TTL                 0x0007 
#define BT_SDP_ATTR_SERVICE_AVAILABILITY        0x0008 
#define BT_SDP_ATTR_PROFILE_DESC_LIST           0x0009 
#define BT_SDP_ATTR_DOC_URL                     0x000a 
#define BT_SDP_ATTR_CLNT_EXEC_URL               0x000b 
#define BT_SDP_ATTR_ICON_URL                    0x000c 
#define BT_SDP_ATTR_ADD_PROTO_DESC_LIST         0x000d 
 
#define BT_SDP_ATTR_GROUP_ID                    0x0200 
#define BT_SDP_ATTR_IP_SUBNET                   0x0200 
#define BT_SDP_ATTR_VERSION_NUM_LIST            0x0200 
#define BT_SDP_ATTR_SUPPORTED_FEATURES_LIST     0x0200 
#define BT_SDP_ATTR_GOEP_L2CAP_PSM              0x0200 
#define BT_SDP_ATTR_SVCDB_STATE                 0x0201 
 
#define BT_SDP_ATTR_MPSD_SCENARIOS              0x0200 
#define BT_SDP_ATTR_MPMD_SCENARIOS              0x0201 
#define BT_SDP_ATTR_MPS_DEPENDENCIES            0x0202 
 
#define BT_SDP_ATTR_SERVICE_VERSION             0x0300 
#define BT_SDP_ATTR_EXTERNAL_NETWORK            0x0301 
#define BT_SDP_ATTR_SUPPORTED_DATA_STORES_LIST  0x0301 
#define BT_SDP_ATTR_DATA_EXCHANGE_SPEC          0x0301 
#define BT_SDP_ATTR_NETWORK                     0x0301 
#define BT_SDP_ATTR_FAX_CLASS1_SUPPORT          0x0302 
#define BT_SDP_ATTR_REMOTE_AUDIO_VOLUME_CONTROL 0x0302 
#define BT_SDP_ATTR_MCAP_SUPPORTED_PROCEDURES   0x0302 
#define BT_SDP_ATTR_FAX_CLASS20_SUPPORT         0x0303 
#define BT_SDP_ATTR_SUPPORTED_FORMATS_LIST      0x0303 
#define BT_SDP_ATTR_FAX_CLASS2_SUPPORT          0x0304 
#define BT_SDP_ATTR_AUDIO_FEEDBACK_SUPPORT      0x0305 
#define BT_SDP_ATTR_NETWORK_ADDRESS             0x0306 
#define BT_SDP_ATTR_WAP_GATEWAY                 0x0307 
#define BT_SDP_ATTR_HOMEPAGE_URL                0x0308 
#define BT_SDP_ATTR_WAP_STACK_TYPE              0x0309 
#define BT_SDP_ATTR_SECURITY_DESC               0x030a 
#define BT_SDP_ATTR_NET_ACCESS_TYPE             0x030b 
#define BT_SDP_ATTR_MAX_NET_ACCESSRATE          0x030c 
#define BT_SDP_ATTR_IP4_SUBNET                  0x030d 
#define BT_SDP_ATTR_IP6_SUBNET                  0x030e 
#define BT_SDP_ATTR_SUPPORTED_CAPABILITIES      0x0310 
#define BT_SDP_ATTR_SUPPORTED_FEATURES          0x0311 
#define BT_SDP_ATTR_SUPPORTED_FUNCTIONS         0x0312 
#define BT_SDP_ATTR_TOTAL_IMAGING_DATA_CAPACITY 0x0313 
#define BT_SDP_ATTR_SUPPORTED_REPOSITORIES      0x0314 
#define BT_SDP_ATTR_MAS_INSTANCE_ID             0x0315 
#define BT_SDP_ATTR_SUPPORTED_MESSAGE_TYPES     0x0316 
#define BT_SDP_ATTR_PBAP_SUPPORTED_FEATURES     0x0317 
#define BT_SDP_ATTR_MAP_SUPPORTED_FEATURES      0x0317 
 
#define BT_SDP_ATTR_SPECIFICATION_ID            0x0200 
#define BT_SDP_ATTR_VENDOR_ID                   0x0201 
#define BT_SDP_ATTR_PRODUCT_ID                  0x0202 
#define BT_SDP_ATTR_VERSION                     0x0203 
#define BT_SDP_ATTR_PRIMARY_RECORD              0x0204 
#define BT_SDP_ATTR_VENDOR_ID_SOURCE            0x0205 
 
#define BT_SDP_ATTR_HID_DEVICE_RELEASE_NUMBER   0x0200 
#define BT_SDP_ATTR_HID_PARSER_VERSION          0x0201 
#define BT_SDP_ATTR_HID_DEVICE_SUBCLASS         0x0202 
#define BT_SDP_ATTR_HID_COUNTRY_CODE            0x0203 
#define BT_SDP_ATTR_HID_VIRTUAL_CABLE           0x0204 
#define BT_SDP_ATTR_HID_RECONNECT_INITIATE      0x0205 
#define BT_SDP_ATTR_HID_DESCRIPTOR_LIST         0x0206 
#define BT_SDP_ATTR_HID_LANG_ID_BASE_LIST       0x0207 
#define BT_SDP_ATTR_HID_SDP_DISABLE             0x0208 
#define BT_SDP_ATTR_HID_BATTERY_POWER           0x0209 
#define BT_SDP_ATTR_HID_REMOTE_WAKEUP           0x020a 
#define BT_SDP_ATTR_HID_PROFILE_VERSION         0x020b 
#define BT_SDP_ATTR_HID_SUPERVISION_TIMEOUT     0x020c 
#define BT_SDP_ATTR_HID_NORMALLY_CONNECTABLE    0x020d 
#define BT_SDP_ATTR_HID_BOOT_DEVICE             0x020e 
#define BT_SDP_ATTR_HID_SSR_HOST_MAX_LATENCY    0x020f 
#define BT_SDP_ATTR_HID_SSR_HOST_MIN_TIMEOUT    0x0210 
 
/*
 * These identifiers are based on the SDP spec stating that
 * "base attribute id of the primary (universal) language must be 0x0100"
 *
 * Other languages should have their own offset; e.g.:
 * #define XXXLangBase yyyy
 * #define AttrServiceName_XXX 0x0000+XXXLangBase
 */
#define BT_SDP_PRIMARY_LANG_BASE  0x0100
 
#define BT_SDP_ATTR_SVCNAME_PRIMARY (0x0000 + BT_SDP_PRIMARY_LANG_BASE)
#define BT_SDP_ATTR_SVCDESC_PRIMARY (0x0001 + BT_SDP_PRIMARY_LANG_BASE)
#define BT_SDP_ATTR_PROVNAME_PRIMARY (0x0002 + BT_SDP_PRIMARY_LANG_BASE)

#define BT_SDP_PROTO_SDP           0x0001 
#define BT_SDP_PROTO_UDP           0x0002 
#define BT_SDP_PROTO_RFCOMM        0x0003 
#define BT_SDP_PROTO_TCP           0x0004 
#define BT_SDP_PROTO_TCS_BIN       0x0005 
#define BT_SDP_PROTO_TCS_AT        0x0006 
#define BT_SDP_PROTO_ATT           0x0007 
#define BT_SDP_PROTO_OBEX          0x0008 
#define BT_SDP_PROTO_IP            0x0009 
#define BT_SDP_PROTO_FTP           0x000a 
#define BT_SDP_PROTO_HTTP          0x000c 
#define BT_SDP_PROTO_WSP           0x000e 
#define BT_SDP_PROTO_BNEP          0x000f 
#define BT_SDP_PROTO_UPNP          0x0010 
#define BT_SDP_PROTO_HID           0x0011 
#define BT_SDP_PROTO_HARDCOPY_CTRL 0x0012 
#define BT_SDP_PROTO_HARDCOPY_DATA 0x0014 
#define BT_SDP_PROTO_HARDCOPY_NTF  0x0016 
#define BT_SDP_PROTO_AVCTP         0x0017 
#define BT_SDP_PROTO_AVDTP         0x0019 
#define BT_SDP_PROTO_CMTP          0x001b 
#define BT_SDP_PROTO_MCAP_CTRL     0x001e 
#define BT_SDP_PROTO_MCAP_DATA     0x001f 
#define BT_SDP_PROTO_L2CAP         0x0100 

#define BT_SDP_DATA_NIL        0x00     
#define BT_SDP_UINT8           0x08     
#define BT_SDP_UINT16          0x09     
#define BT_SDP_UINT32          0x0a     
#define BT_SDP_UINT64          0x0b     
#define BT_SDP_UINT128         0x0c     
#define BT_SDP_INT8            0x10     
#define BT_SDP_INT16           0x11     
#define BT_SDP_INT32           0x12     
#define BT_SDP_INT64           0x13     
#define BT_SDP_INT128          0x14     
#define BT_SDP_UUID_UNSPEC     0x18     
#define BT_SDP_UUID16          0x19     
#define BT_SDP_UUID32          0x1a     
#define BT_SDP_UUID128         0x1c     
#define BT_SDP_TEXT_STR_UNSPEC 0x20     
#define BT_SDP_TEXT_STR8       0x25     
#define BT_SDP_TEXT_STR16      0x26     
#define BT_SDP_TEXT_STR32      0x27     
#define BT_SDP_BOOL            0x28     
#define BT_SDP_SEQ_UNSPEC      0x30     
#define BT_SDP_SEQ8            0x35     
#define BT_SDP_SEQ16           0x36     
#define BT_SDP_SEQ32           0x37     
#define BT_SDP_ALT_UNSPEC      0x38     
#define BT_SDP_ALT8            0x3d     
#define BT_SDP_ALT16           0x3e     
#define BT_SDP_ALT32           0x3f     
#define BT_SDP_URL_STR_UNSPEC  0x40     
#define BT_SDP_URL_STR8        0x45     
#define BT_SDP_URL_STR16       0x46     
#define BT_SDP_URL_STR32       0x47     
 
#define BT_SDP_TYPE_DESC_MASK 0xf8
#define BT_SDP_SIZE_DESC_MASK 0x07
#define BT_SDP_SIZE_INDEX_OFFSET 5

struct bt_sdp_data_elem {
        uint8_t        type;            
        uint32_t       data_size;       
        uint32_t       total_size;      
        const void *data;
};

struct bt_sdp_attribute {
        uint16_t                id;  
        struct bt_sdp_data_elem val; 
};

struct bt_sdp_record {
        uint32_t                    handle;       
        struct bt_sdp_attribute     *attrs;       
        size_t                      attr_count;   
        uint8_t                     index;        
        sys_snode_t                 node;
};
 
/*
 * ---------------------------------------------------    ------------------
 * | Service Hdl | Attr list ptr | Attr count | Next | -> | Service Hdl | ...
 * ---------------------------------------------------    ------------------
 */

#define BT_SDP_ARRAY_8(...) ((uint8_t[]) {__VA_ARGS__})

#define BT_SDP_ARRAY_16(...) ((uint16_t[]) {__VA_ARGS__})

#define BT_SDP_ARRAY_32(...) ((uint32_t[]) {__VA_ARGS__})

#define BT_SDP_ARRAY_UUID_128(w32, w1, w2, w3, w48) \
        BT_SDP_ARRAY_8(BT_UUID_128_ENCODE(w32, w1, w2, w3, w48))

#define BT_SDP_TYPE_SIZE(_type) .type = _type, \
                        .data_size = BIT(_type & BT_SDP_SIZE_DESC_MASK), \
                        .total_size = BIT(_type & BT_SDP_SIZE_DESC_MASK) + 1

#define BT_SDP_TYPE_SIZE_VAR(_type, _size) .type = _type, \
                        .data_size = _size, \
                        .total_size = BIT((_type & BT_SDP_SIZE_DESC_MASK) - \
                                          BT_SDP_SIZE_INDEX_OFFSET) + _size + 1

#define BT_SDP_DATA_ELEM_LIST(...) ((struct bt_sdp_data_elem[]) {__VA_ARGS__})
 

#define BT_SDP_NEW_SERVICE \
{ \
        BT_SDP_ATTR_RECORD_HANDLE, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UINT32), BT_SDP_ARRAY_32(0) } \
}, \
{ \
        BT_SDP_ATTR_RECORD_STATE, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UINT32), BT_SDP_ARRAY_32(0) } \
}, \
{ \
        BT_SDP_ATTR_LANG_BASE_ATTR_ID_LIST, \
        { BT_SDP_TYPE_SIZE_VAR(BT_SDP_SEQ8, 9), \
          BT_SDP_DATA_ELEM_LIST( \
                { BT_SDP_TYPE_SIZE(BT_SDP_UINT16), BT_SDP_ARRAY_8('n', 'e') }, \
                { BT_SDP_TYPE_SIZE(BT_SDP_UINT16), BT_SDP_ARRAY_16(106) }, \
                { BT_SDP_TYPE_SIZE(BT_SDP_UINT16), \
                        BT_SDP_ARRAY_16(BT_SDP_PRIMARY_LANG_BASE) } \
          ), \
        } \
}, \
{ \
        BT_SDP_ATTR_BROWSE_GRP_LIST, \
        { BT_SDP_TYPE_SIZE_VAR(BT_SDP_SEQ8, 3), \
          BT_SDP_DATA_ELEM_LIST( \
                { BT_SDP_TYPE_SIZE(BT_SDP_UUID16), \
                        BT_SDP_ARRAY_16(BT_SDP_PUBLIC_BROWSE_GROUP) }, \
          ), \
        } \
}
 

#define BT_SDP_LIST(_att_id, _type_size, _data_elem_seq) \
{ \
        _att_id, { _type_size, _data_elem_seq } \
}

#define BT_SDP_SERVICE_ID(_uuid) \
{ \
        BT_SDP_ATTR_SERVICE_ID, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UUID16), &((struct bt_uuid_16) _uuid) } \
}

#define BT_SDP_SERVICE_NAME(_name) \
{ \
        BT_SDP_ATTR_SVCNAME_PRIMARY, \
        { BT_SDP_TYPE_SIZE_VAR(BT_SDP_TEXT_STR8, (sizeof(_name)-1)), _name } \
}

#define BT_SDP_SUPPORTED_FEATURES(_features) \
{ \
        BT_SDP_ATTR_SUPPORTED_FEATURES, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UINT16), BT_SDP_ARRAY_16(_features) } \
}

#define BT_SDP_SUPPORTED_CAPABILITIES(_capabilities) \
{ \
        BT_SDP_ATTR_SUPPORTED_CAPABILITIES, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UINT8), BT_SDP_ARRAY_8(_capabilities) } \
}

#define BT_SDP_SUPPORTED_FUNCTIONS(_functions) \
{ \
        BT_SDP_ATTR_SUPPORTED_FUNCTIONS, \
        { BT_SDP_TYPE_SIZE(BT_SDP_UINT32), BT_SDP_ARRAY_32(_functions) } \
}

#define BT_SDP_RECORD(_attrs) \
{ \
        .attrs = _attrs, \
        .attr_count = ARRAY_SIZE((_attrs)), \
}
 
/* Server API */

int bt_sdp_register_service(struct bt_sdp_record *service);
 
/* Client API */

struct bt_sdp_client_result {
        struct net_buf        *resp_buf;
        bool                   next_record_hint;
};

enum {
        BT_SDP_DISCOVER_UUID_STOP = 0,
        BT_SDP_DISCOVER_UUID_CONTINUE,
};
 
struct bt_sdp_discover_params;

typedef uint8_t (*bt_sdp_discover_func_t)(struct bt_conn *conn, struct bt_sdp_client_result *result,
                                          const struct bt_sdp_discover_params *params);

enum {
        BT_SDP_DISCOVER_SERVICE_SEARCH,
        BT_SDP_DISCOVER_SERVICE_ATTR,
        BT_SDP_DISCOVER_SERVICE_SEARCH_ATTR,
};

#define BT_SDP_ATTR_ID_RANGE(beginning, ending) {(beginning), (ending)}

struct bt_sdp_attribute_id_range {
        uint16_t beginning;
        uint16_t ending;
};

struct bt_sdp_attribute_id_list {
        size_t count;
        struct bt_sdp_attribute_id_range *ranges;
};

struct bt_sdp_discover_params {
        sys_snode_t _node;
        union {
                const struct bt_uuid *uuid;
                uint32_t handle;
        };
        bt_sdp_discover_func_t func;
        struct net_buf_pool *pool;
        uint8_t type;
        struct bt_sdp_attribute_id_list *ids;
};

 
int bt_sdp_discover(struct bt_conn *conn,
                    struct bt_sdp_discover_params *params);

int bt_sdp_discover_cancel(struct bt_conn *conn,
                           const struct bt_sdp_discover_params *params);
 
 
/* Helper types & functions for SDP client to get essential data from server */

int bt_sdp_get_proto_param(const struct net_buf *buf, uint16_t proto,
                           uint16_t *param);

int bt_sdp_get_addl_proto_param(const struct net_buf *buf, uint16_t proto, uint8_t index,
                                uint16_t *param);

int bt_sdp_get_profile_version(const struct net_buf *buf, uint16_t profile,
                               uint16_t *version);

int bt_sdp_get_features(const struct net_buf *buf, uint16_t *features);

int bt_sdp_get_vendor_id(const struct net_buf *buf, uint16_t *vendor_id);

int bt_sdp_get_product_id(const struct net_buf *buf, uint16_t *product_id);

int bt_sdp_record_parse(const struct net_buf *buf,
                        bool (*func)(const struct bt_sdp_attribute *attr, void *user_data),
                        void *user_data);

bool bt_sdp_has_attr(const struct net_buf *buf, uint16_t attr_id);

int bt_sdp_get_attr(const struct net_buf *buf, uint16_t attr_id, struct bt_sdp_attribute *attr);

struct bt_sdp_attr_value_uint {
        uint8_t size;
        union {
                uint8_t u8;   
                uint16_t u16; 
                uint32_t u32; 
                uint64_t u64; 
                uint8_t u128[BIT(BT_SDP_UINT128 & BT_SDP_SIZE_DESC_MASK)];
        };
};

struct bt_sdp_attr_value_int {
        uint8_t size;
        union {
                int8_t s8;   
                int16_t s16; 
                int32_t s32; 
                int64_t s64; 
                uint8_t s128[BIT(BT_SDP_INT128 & BT_SDP_SIZE_DESC_MASK)];
        };
};

struct bt_sdp_attr_value_text {
        uint32_t len;
        uint8_t *text;
};

struct bt_sdp_attr_value_url {
        uint32_t len;
        uint8_t *url;
};

enum bt_sdp_attr_value_type {
        BT_SDP_ATTR_VALUE_TYPE_NONE = 0, 
        BT_SDP_ATTR_VALUE_TYPE_UINT,     
        BT_SDP_ATTR_VALUE_TYPE_SINT,     
        BT_SDP_ATTR_VALUE_TYPE_BOOL,     
        BT_SDP_ATTR_VALUE_TYPE_TEXT,     
        BT_SDP_ATTR_VALUE_TYPE_URL,      
};

struct bt_sdp_attr_value {
        enum bt_sdp_attr_value_type type;
        union {
                bool value;
                struct bt_sdp_attr_value_uint uint;
                struct bt_sdp_attr_value_int sint;
                struct bt_sdp_attr_value_text text;
                struct bt_sdp_attr_value_url url;
        };
};

struct bt_sdp_attr_value_pair {
        struct bt_uuid *uuid;
        struct bt_sdp_attr_value *value;
};

int bt_sdp_attr_value_parse(const struct bt_sdp_attribute *attr,
                            bool (*func)(const struct bt_sdp_attr_value_pair *value,
                                         void *user_data),
                            void *user_data);

bool bt_sdp_attr_has_uuid(const struct bt_sdp_attribute *attr, const struct bt_uuid *uuid);

int bt_sdp_attr_read(const struct bt_sdp_attribute *attr, const struct bt_uuid *uuid,
                     struct bt_sdp_attr_value *value);

int bt_sdp_attr_addl_proto_parse(const struct bt_sdp_attribute *attr,
                                 bool (*func)(const struct bt_sdp_attribute *attr, void *user_data),
                                 void *user_data);

ssize_t bt_sdp_attr_addl_proto_count(const struct bt_sdp_attribute *attr);

int bt_sdp_attr_addl_proto_read(const struct bt_sdp_attribute *attr, uint16_t index,
                                const struct bt_uuid *uuid, struct bt_sdp_attr_value *value);
 
#ifdef __cplusplus
}
#endif

 
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_CLASSIC_SDP_H_ */