/* * * BlueZ - Bluetooth protocol stack for Linux * * Copyright (C) 2010 Nokia Corporation * Copyright (C) 2010 Marcel Holtmann * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ /* GATT Profile Attribute types */ #define GATT_PRIM_SVC_UUID 0x2800 #define GATT_SND_SVC_UUID 0x2801 #define GATT_INCLUDE_UUID 0x2802 #define GATT_CHARAC_UUID 0x2803 /* GATT Characteristic Types */ #define GATT_CHARAC_DEVICE_NAME 0x2A00 #define GATT_CHARAC_APPEARANCE 0x2A01 #define GATT_CHARAC_PERIPHERAL_PRIV_FLAG 0x2A02 #define GATT_CHARAC_RECONNECTION_ADDRESS 0x2A03 #define GATT_CHARAC_PERIPHERAL_PREF_CONN 0x2A04 #define GATT_CHARAC_SERVICE_CHANGED 0x2A05 /* GATT Characteristic Descriptors */ #define GATT_CHARAC_EXT_PROPER_UUID 0x2900 #define GATT_CHARAC_USER_DESC_UUID 0x2901 #define GATT_CLIENT_CHARAC_CFG_UUID 0x2902 #define GATT_SERVER_CHARAC_CFG_UUID 0x2903 #define GATT_CHARAC_FMT_UUID 0x2904 #define GATT_CHARAC_AGREG_FMT_UUID 0x2905 /* Attribute Protocol Opcodes */ #define ATT_OP_ERROR 0x01 #define ATT_OP_MTU_REQ 0x02 #define ATT_OP_MTU_RESP 0x03 #define ATT_OP_FIND_INFO_REQ 0x04 #define ATT_OP_FIND_INFO_RESP 0x05 #define ATT_OP_FIND_BY_TYPE_REQ 0x06 #define ATT_OP_FIND_BY_TYPE_RESP 0x07 #define ATT_OP_READ_BY_TYPE_REQ 0x08 #define ATT_OP_READ_BY_TYPE_RESP 0x09 #define ATT_OP_READ_REQ 0x0A #define ATT_OP_READ_RESP 0x0B #define ATT_OP_READ_BLOB_REQ 0x0C #define ATT_OP_READ_BLOB_RESP 0x0D #define ATT_OP_READ_MULTI_REQ 0x0E #define ATT_OP_READ_MULTI_RESP 0x0F #define ATT_OP_READ_BY_GROUP_REQ 0x10 #define ATT_OP_READ_BY_GROUP_RESP 0x11 #define ATT_OP_WRITE_REQ 0x12 #define ATT_OP_WRITE_RESP 0x13 #define ATT_OP_WRITE_CMD 0x52 #define ATT_OP_PREP_WRITE_REQ 0x16 #define ATT_OP_PREP_WRITE_RESP 0x17 #define ATT_OP_EXEC_WRITE_REQ 0x18 #define ATT_OP_EXEC_WRITE_RESP 0x19 #define ATT_OP_HANDLE_NOTIFY 0x1B #define ATT_OP_HANDLE_IND 0x1D #define ATT_OP_HANDLE_CNF 0x1E #define ATT_OP_SIGNED_WRITE_CMD 0xD2 /* Error codes for Error response PDU */ #define ATT_ECODE_INVALID_HANDLE 0x01 #define ATT_ECODE_READ_NOT_PERM 0x02 #define ATT_ECODE_WRITE_NOT_PERM 0x03 #define ATT_ECODE_INVALID_PDU 0x04 #define ATT_ECODE_INSUFF_AUTHEN 0x05 #define ATT_ECODE_REQ_NOT_SUPP 0x06 #define ATT_ECODE_INVALID_OFFSET 0x07 #define ATT_ECODE_INSUFF_AUTHO 0x08 #define ATT_ECODE_PREP_QUEUE_FULL 0x09 #define ATT_ECODE_ATTR_NOT_FOUND 0x0A #define ATT_ECODE_ATTR_NOT_LONG 0x0B #define ATT_ECODE_INSUFF_ENCR_KEY_SIZE 0x0C #define ATT_ECODE_INVAL_ATTR_VALUE_LEN 0x0D #define ATT_ECODE_UNLIKELY 0x0E #define ATT_ECODE_INSUFF_ENC 0x0F #define ATT_ECODE_UNSUPP_GRP_TYPE 0x10 #define ATT_ECODE_INSUFF_RESOURCES 0x11 /* Application error */ #define ATT_ECODE_IO 0xFF /* Characteristic Property bit field */ #define ATT_CHAR_PROPER_BROADCAST 0x01 #define ATT_CHAR_PROPER_READ 0x02 #define ATT_CHAR_PROPER_WRITE_WITHOUT_RESP 0x04 #define ATT_CHAR_PROPER_WRITE 0x08 #define ATT_CHAR_PROPER_NOTIFY 0x10 #define ATT_CHAR_PROPER_INDICATE 0x20 #define ATT_CHAR_PROPER_AUTH 0x40 #define ATT_CHAR_PROPER_EXT_PROPER 0x80 #define ATT_MAX_MTU 256 #define ATT_DEFAULT_MTU 23 /* Requirements for read/write operations */ enum { ATT_NONE, /* No restrictions */ ATT_AUTHENTICATION, /* Authentication required */ ATT_AUTHORIZATION, /* Authorization required */ ATT_NOT_PERMITTED, /* Operation not permitted */ }; struct attribute { uint16_t handle; uuid_t uuid; int read_reqs; int write_reqs; int len; uint8_t data[0]; }; struct att_data_list { uint16_t num; uint16_t len; uint8_t **data; }; struct att_range { uint16_t start; uint16_t end; }; struct att_primary { char uuid[MAX_LEN_UUID_STR + 1]; uint16_t start; uint16_t end; }; /* These functions do byte conversion */ static inline uint8_t att_get_u8(const void *ptr) { const uint8_t *u8_ptr = ptr; return bt_get_unaligned(u8_ptr); } static inline uint16_t att_get_u16(const void *ptr) { const uint16_t *u16_ptr = ptr; return btohs(bt_get_unaligned(u16_ptr)); } static inline uint32_t att_get_u32(const void *ptr) { const uint32_t *u32_ptr = ptr; return btohl(bt_get_unaligned(u32_ptr)); } static inline void att_put_u8(uint8_t src, void *dst) { bt_put_unaligned(src, (uint8_t *) dst); } static inline void att_put_u16(uint16_t src, void *dst) { bt_put_unaligned(htobs(src), (uint16_t *) dst); } static inline void att_put_u32(uint16_t src, void *dst) { bt_put_unaligned(htobl(src), (uint32_t *) dst); } void att_data_list_free(struct att_data_list *list); const char *att_ecode2str(uint8_t status); uint16_t enc_read_by_grp_req(uint16_t start, uint16_t end, uuid_t *uuid, uint8_t *pdu, int len); uint16_t dec_read_by_grp_req(const uint8_t *pdu, int len, uint16_t *start, uint16_t *end, uuid_t *uuid); uint16_t enc_read_by_grp_resp(struct att_data_list *list, uint8_t *pdu, int len); uint16_t enc_find_by_type_req(uint16_t start, uint16_t end, uuid_t *uuid, const uint8_t *value, int vlen, uint8_t *pdu, int len); uint16_t dec_find_by_type_req(const uint8_t *pdu, int len, uint16_t *start, uint16_t *end, uuid_t *uuid, uint8_t *value, int *vlen); uint16_t enc_find_by_type_resp(GSList *ranges, uint8_t *pdu, int len); GSList *dec_find_by_type_resp(const uint8_t *pdu, int len); struct att_data_list *dec_read_by_grp_resp(const uint8_t *pdu, int len); uint16_t enc_read_by_type_req(uint16_t start, uint16_t end, uuid_t *uuid, uint8_t *pdu, int len); uint16_t dec_read_by_type_req(const uint8_t *pdu, int len, uint16_t *start, uint16_t *end, uuid_t *uuid); uint16_t enc_read_by_type_resp(struct att_data_list *list, uint8_t *pdu, int len); uint16_t enc_write_cmd(uint16_t handle, const uint8_t *value, int vlen, uint8_t *pdu, int len); uint16_t dec_write_cmd(const uint8_t *pdu, int len, uint16_t *handle, uint8_t *value, int *vlen); struct att_data_list *dec_read_by_type_resp(const uint8_t *pdu, int len); uint16_t enc_write_req(uint16_t handle, const uint8_t *value, int vlen, uint8_t *pdu, int len); uint16_t dec_write_req(const uint8_t *pdu, int len, uint16_t *handle, uint8_t *value, int *vlen); uint16_t enc_read_req(uint16_t handle, uint8_t *pdu, int len); uint16_t enc_read_blob_req(uint16_t handle, uint16_t offset, uint8_t *pdu, int len); uint16_t dec_read_req(const uint8_t *pdu, int len, uint16_t *handle); uint16_t enc_read_resp(uint8_t *value, int vlen, uint8_t *pdu, int len); uint16_t dec_read_resp(const uint8_t *pdu, int len, uint8_t *value, int *vlen); uint16_t enc_error_resp(uint8_t opcode, uint16_t handle, uint8_t status, uint8_t *pdu, int len); uint16_t enc_find_info_req(uint16_t start, uint16_t end, uint8_t *pdu, int len); uint16_t dec_find_info_req(const uint8_t *pdu, int len, uint16_t *start, uint16_t *end); uint16_t enc_find_info_resp(uint8_t format, struct att_data_list *list, uint8_t *pdu, int len); struct att_data_list *dec_find_info_resp(const uint8_t *pdu, int len, uint8_t *format); uint16_t enc_notification(struct attribute *a, uint8_t *pdu, int len); uint16_t enc_indication(struct attribute *a, uint8_t *pdu, int len); struct attribute *dec_indication(const uint8_t *pdu, int len); uint16_t enc_confirmation(uint8_t *pdu, int len); uint16_t enc_mtu_req(uint16_t mtu, uint8_t *pdu, int len); uint16_t dec_mtu_req(const uint8_t *pdu, int len, uint16_t *mtu); uint16_t enc_mtu_resp(uint16_t mtu, uint8_t *pdu, int len); uint16_t dec_mtu_resp(const uint8_t *pdu, int len, uint16_t *mtu);