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* BlueZ - Bluetooth protocol stack for Linux
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* Copyright (C) 2001-2002 Nokia Corporation
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* Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
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* Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
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* Copyright (C) 2002-2003 Stephen Crane <steve.crane@rococosoft.com>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <sys/socket.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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typedef void(*sdp_list_func_t)(void *, void *);
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typedef void(*sdp_free_func_t)(void *);
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typedef int (*sdp_comp_func_t)(const void *, const void *);
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sdp_list_t *sdp_list_append(sdp_list_t *list, void *d);
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sdp_list_t *sdp_list_remove(sdp_list_t *list, void *d);
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sdp_list_t *sdp_list_insert_sorted(sdp_list_t *list, void *data, sdp_comp_func_t f);
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void sdp_list_free(sdp_list_t *list, sdp_free_func_t f);
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static inline int sdp_list_len(const sdp_list_t *list)
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for (; list; list = list->next)
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static inline sdp_list_t *sdp_list_find(sdp_list_t *list, void *u, sdp_comp_func_t f)
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for (; list; list = list->next)
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if (f(list->data, u) == 0)
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static inline void sdp_list_foreach(sdp_list_t *list, sdp_list_func_t f, void *u)
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for (; list; list = list->next)
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* Values of the flags parameter to sdp_record_register
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#define SDP_RECORD_PERSIST 0x01
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#define SDP_DEVICE_RECORD 0x02
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* Values of the flags parameter to sdp_connect
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#define SDP_RETRY_IF_BUSY 0x01
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#define SDP_WAIT_ON_CLOSE 0x02
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#define SDP_NON_BLOCKING 0x04
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* a session with an SDP server
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uint16_t tid; // Current transaction ID
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* Attributes are specified as individual elements
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SDP_ATTR_REQ_INDIVIDUAL = 1,
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* Attributes are specified as a range
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} sdp_attrreq_type_t;
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* When the pdu_id(type) is a sdp error response, check the status value
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* to figure out the error reason. For status values 0x0001-0x0006 check
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* Bluetooth SPEC. If the status is 0xffff, call sdp_get_error function
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* to get the real reason:
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* - wrong transaction ID(EPROTO)
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* - wrong PDU id or(EPROTO)
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typedef void sdp_callback_t(uint8_t type, uint16_t status, uint8_t *rsp, size_t size, void *udata);
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* create an L2CAP connection to a Bluetooth device
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* Address of the local device to use to make the connection
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* Address of the SDP server device
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sdp_session_t *sdp_connect(const bdaddr_t *src, const bdaddr_t *dst, uint32_t flags);
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int sdp_close(sdp_session_t *session);
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int sdp_get_socket(const sdp_session_t *session);
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* SDP transaction: functions for asynchronous search.
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sdp_session_t *sdp_create(int sk, uint32_t flags);
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int sdp_get_error(sdp_session_t *session);
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int sdp_process(sdp_session_t *session);
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int sdp_set_notify(sdp_session_t *session, sdp_callback_t *func, void *udata);
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int sdp_service_search_async(sdp_session_t *session, const sdp_list_t *search, uint16_t max_rec_num);
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int sdp_service_attr_async(sdp_session_t *session, uint32_t handle, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list);
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int sdp_service_search_attr_async(sdp_session_t *session, const sdp_list_t *search, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list);
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uint16_t sdp_gen_tid(sdp_session_t *session);
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* find all devices in the piconet
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int sdp_general_inquiry(inquiry_info *ii, int dev_num, int duration, uint8_t *found);
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/* flexible extraction of basic attributes - Jean II */
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int sdp_get_int_attr(const sdp_record_t *rec, uint16_t attr, int *value);
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int sdp_get_string_attr(const sdp_record_t *rec, uint16_t attr, char *value, int valuelen);
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* Basic sdp data functions
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sdp_data_t *sdp_data_alloc(uint8_t dtd, const void *value);
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sdp_data_t *sdp_data_alloc_with_length(uint8_t dtd, const void *value, uint32_t length);
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void sdp_data_free(sdp_data_t *data);
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sdp_data_t *sdp_data_get(const sdp_record_t *rec, uint16_t attr_id);
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sdp_data_t *sdp_seq_alloc(void **dtds, void **values, int len);
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sdp_data_t *sdp_seq_alloc_with_length(void **dtds, void **values, int *length, int len);
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sdp_data_t *sdp_seq_append(sdp_data_t *seq, sdp_data_t *data);
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int sdp_attr_add(sdp_record_t *rec, uint16_t attr, sdp_data_t *data);
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void sdp_attr_remove(sdp_record_t *rec, uint16_t attr);
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void sdp_attr_replace(sdp_record_t *rec, uint16_t attr, sdp_data_t *data);
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int sdp_set_uuidseq_attr(sdp_record_t *rec, uint16_t attr, sdp_list_t *seq);
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int sdp_get_uuidseq_attr(const sdp_record_t *rec, uint16_t attr, sdp_list_t **seqp);
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* NOTE that none of the functions below will update the SDP server,
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* unless the {register, update}sdp_record_t() function is invoked.
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* All functions which return an integer value, return 0 on success
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* Create an attribute and add it to the service record's attribute list.
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* This consists of the data type descriptor of the attribute,
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* the value of the attribute and the attribute identifier.
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int sdp_attr_add_new(sdp_record_t *rec, uint16_t attr, uint8_t dtd, const void *p);
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* Set the information attributes of the service record.
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* The set of attributes comprises service name, description
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void sdp_set_info_attr(sdp_record_t *rec, const char *name, const char *prov, const char *desc);
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* Set the ServiceClassID attribute to the sequence specified by seq.
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* Note that the identifiers need to be in sorted order from the most
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* specific to the most generic service class that this service
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static inline int sdp_set_service_classes(sdp_record_t *rec, sdp_list_t *seq)
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return sdp_set_uuidseq_attr(rec, SDP_ATTR_SVCLASS_ID_LIST, seq);
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* Get the service classes to which the service conforms.
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* When set, the list contains elements of ServiceClassIdentifer(uint16_t)
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* ordered from most specific to most generic
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static inline int sdp_get_service_classes(const sdp_record_t *rec, sdp_list_t **seqp)
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return sdp_get_uuidseq_attr(rec, SDP_ATTR_SVCLASS_ID_LIST, seqp);
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* Set the BrowseGroupList attribute to the list specified by seq.
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* A service can belong to one or more service groups
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* and the list comprises such group identifiers (UUIDs)
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static inline int sdp_set_browse_groups(sdp_record_t *rec, sdp_list_t *seq)
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return sdp_set_uuidseq_attr(rec, SDP_ATTR_BROWSE_GRP_LIST, seq);
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* Set the access protocols of the record to those specified in proto
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int sdp_set_access_protos(sdp_record_t *rec, const sdp_list_t *proto);
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* Set the additional access protocols of the record to those specified in proto
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int sdp_set_add_access_protos(sdp_record_t *rec, const sdp_list_t *proto);
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* Get protocol port (i.e. PSM for L2CAP, Channel for RFCOMM)
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int sdp_get_proto_port(const sdp_list_t *list, int proto);
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* Get protocol descriptor.
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sdp_data_t *sdp_get_proto_desc(sdp_list_t *list, int proto);
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* Set the LanguageBase attributes to the values specified in list
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* (a linked list of sdp_lang_attr_t objects, one for each language in
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* which user-visible attributes are present).
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int sdp_set_lang_attr(sdp_record_t *rec, const sdp_list_t *list);
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* Set the ServiceInfoTimeToLive attribute of the service.
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* This is the number of seconds that this record is guaranteed
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* not to change after being obtained by a client.
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static inline int sdp_set_service_ttl(sdp_record_t *rec, uint32_t ttl)
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return sdp_attr_add_new(rec, SDP_ATTR_SVCINFO_TTL, SDP_UINT32, &ttl);
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* Set the ServiceRecordState attribute of a service. This is
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* guaranteed to change if there is any kind of modification to
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static inline int sdp_set_record_state(sdp_record_t *rec, uint32_t state)
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return sdp_attr_add_new(rec, SDP_ATTR_RECORD_STATE, SDP_UINT32, &state);
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* Set the ServiceID attribute of a service.
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void sdp_set_service_id(sdp_record_t *rec, uuid_t uuid);
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* Set the GroupID attribute of a service
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void sdp_set_group_id(sdp_record_t *rec, uuid_t grouuuid);
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* Set the ServiceAvailability attribute of a service.
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* Note that this represents the relative availability
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* of the service: 0x00 means completely unavailable;
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* 0xFF means maximum availability.
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static inline int sdp_set_service_avail(sdp_record_t *rec, uint8_t avail)
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return sdp_attr_add_new(rec, SDP_ATTR_SERVICE_AVAILABILITY, SDP_UINT8, &avail);
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* Set the profile descriptor list attribute of a record.
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* Each element in the list is an object of type
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* sdp_profile_desc_t which is a definition of the
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* Bluetooth profile that this service conforms to.
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int sdp_set_profile_descs(sdp_record_t *rec, const sdp_list_t *desc);
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* Set URL attributes of a record.
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* ClientExecutableURL: a URL to a client's platform specific (WinCE,
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* PalmOS) executable code that can be used to access this service.
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* DocumentationURL: a URL pointing to service documentation
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* IconURL: a URL to an icon that can be used to represent this service.
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* Note: pass NULL for any URLs that you don't want to set or remove
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void sdp_set_url_attr(sdp_record_t *rec, const char *clientExecURL, const char *docURL, const char *iconURL);
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* a service search request.
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* list containing elements of the search
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* pattern. Each entry in the list is a UUID
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* of the service to be searched
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* uint16_t max_rec_num
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* An integer specifying the maximum number of
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* entries that the client can handle in the response.
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* The request completed successfully. This does not
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* mean the requested services were found
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* The request completed unsuccessfully
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* sdp_list_t *rsp_list
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* This variable is set on a successful return if there are
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* non-zero service handles. It is a singly linked list of
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* service record handles (uint16_t)
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int sdp_service_search_req(sdp_session_t *session, const sdp_list_t *search, uint16_t max_rec_num, sdp_list_t **rsp_list);
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* a service attribute request.
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* The handle of the service for which the attribute(s) are
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* sdp_attrreq_type_t reqtype
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* Attribute identifiers are 16 bit unsigned integers specified
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* in one of 2 ways described below :
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* SDP_ATTR_REQ_INDIVIDUAL - 16bit individual identifiers
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* They are the actual attribute identifiers in ascending order
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* SDP_ATTR_REQ_RANGE - 32bit identifier range
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* The high-order 16bits is the start of range
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* the low-order 16bits are the end of range
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* 0x0000 to 0xFFFF gets all attributes
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* sdp_list_t *attrid_list
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* Singly linked list containing attribute identifiers desired.
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* Every element is either a uint16_t(attrSpec = SDP_ATTR_REQ_INDIVIDUAL)
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* or a uint32_t(attrSpec=SDP_ATTR_REQ_RANGE)
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* The request completed successfully. This does not
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* mean the requested services were found
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* The request completed unsuccessfully due to a timeout
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sdp_record_t *sdp_service_attr_req(sdp_session_t *session, uint32_t handle, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list);
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* This is a service search request combined with the service
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* attribute request. First a service class match is done and
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* for matching service, requested attributes are extracted
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* Singly linked list containing elements of the search
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* pattern. Each entry in the list is a UUID(DataTypeSDP_UUID16)
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* of the service to be searched
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* AttributeSpecification attrSpec
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* Attribute identifiers are 16 bit unsigned integers specified
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* in one of 2 ways described below :
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* SDP_ATTR_REQ_INDIVIDUAL - 16bit individual identifiers
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* They are the actual attribute identifiers in ascending order
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* SDP_ATTR_REQ_RANGE - 32bit identifier range
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* The high-order 16bits is the start of range
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* the low-order 16bits are the end of range
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* 0x0000 to 0xFFFF gets all attributes
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* sdp_list_t *attrid_list
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* Singly linked list containing attribute identifiers desired.
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* Every element is either a uint16_t(attrSpec = SDP_ATTR_REQ_INDIVIDUAL)
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* or a uint32_t(attrSpec=SDP_ATTR_REQ_RANGE)
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* The request completed successfully. This does not
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* mean the requested services were found
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* The request completed unsuccessfully due to a timeout
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* sdp_list_t *rsp_list
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* This variable is set on a successful return to point to
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* service(s) found. Each element of this list is of type
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int sdp_service_search_attr_req(sdp_session_t *session, const sdp_list_t *search, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list, sdp_list_t **rsp_list);
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* Allocate/free a service record and its attributes
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sdp_record_t *sdp_record_alloc(void);
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void sdp_record_free(sdp_record_t *rec);
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* Register a service record.
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* Note: It is the responsbility of the Service Provider to create the
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* record first and set its attributes using setXXX() methods.
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* The service provider must then call sdp_record_register() to make
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* the service record visible to SDP clients. This function returns 0
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* on success or -1 on failure (and sets errno).
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int sdp_device_record_register_binary(sdp_session_t *session, bdaddr_t *device, uint8_t *data, uint32_t size, uint8_t flags, uint32_t *handle);
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int sdp_device_record_register(sdp_session_t *session, bdaddr_t *device, sdp_record_t *rec, uint8_t flags);
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int sdp_record_register(sdp_session_t *session, sdp_record_t *rec, uint8_t flags);
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* Unregister a service record.
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int sdp_device_record_unregister_binary(sdp_session_t *session, bdaddr_t *device, uint32_t handle);
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int sdp_device_record_unregister(sdp_session_t *session, bdaddr_t *device, sdp_record_t *rec);
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int sdp_record_unregister(sdp_session_t *session, sdp_record_t *rec);
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* Update an existing service record. (Calling this function
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* before a previous call to sdp_record_register() will result
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int sdp_device_record_update_binary(sdp_session_t *session, bdaddr_t *device, uint32_t handle, uint8_t *data, uint32_t size);
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int sdp_device_record_update(sdp_session_t *session, bdaddr_t *device, const sdp_record_t *rec);
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int sdp_record_update(sdp_session_t *sess, const sdp_record_t *rec);
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void sdp_record_print(const sdp_record_t *rec);
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uuid_t *sdp_uuid16_create(uuid_t *uuid, uint16_t data);
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uuid_t *sdp_uuid32_create(uuid_t *uuid, uint32_t data);
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uuid_t *sdp_uuid128_create(uuid_t *uuid, const void *data);
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int sdp_uuid16_cmp(const void *p1, const void *p2);
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int sdp_uuid128_cmp(const void *p1, const void *p2);
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int sdp_uuid_cmp(const void *p1, const void *p2);
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uuid_t *sdp_uuid_to_uuid128(const uuid_t *uuid);
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void sdp_uuid16_to_uuid128(uuid_t *uuid128, const uuid_t *uuid16);
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void sdp_uuid32_to_uuid128(uuid_t *uuid128, const uuid_t *uuid32);
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int sdp_uuid128_to_uuid(uuid_t *uuid);
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int sdp_uuid_to_proto(uuid_t *uuid);
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int sdp_uuid_extract(const uint8_t *buffer, int bufsize, uuid_t *uuid, int *scanned);
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void sdp_uuid_print(const uuid_t *uuid);
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#define MAX_LEN_UUID_STR 37
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#define MAX_LEN_PROTOCOL_UUID_STR 8
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#define MAX_LEN_SERVICECLASS_UUID_STR 28
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#define MAX_LEN_PROFILEDESCRIPTOR_UUID_STR 28
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int sdp_uuid2strn(const uuid_t *uuid, char *str, size_t n);
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int sdp_proto_uuid2strn(const uuid_t *uuid, char *str, size_t n);
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int sdp_svclass_uuid2strn(const uuid_t *uuid, char *str, size_t n);
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int sdp_profile_uuid2strn(const uuid_t *uuid, char *str, size_t n);
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* In all the sdp_get_XXX(handle, XXX *xxx) functions below,
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* the XXX * is set to point to the value, should it exist
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* and 0 is returned. If the value does not exist, -1 is
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* returned and errno set to ENODATA.
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* In all the methods below, the memory management rules are
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* simple. Don't free anything! The pointer returned, in the
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* case of constructed types, is a pointer to the contents
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* of the sdp_record_t.
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* Get the access protocols from the service record
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int sdp_get_access_protos(const sdp_record_t *rec, sdp_list_t **protos);
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* Get the additional access protocols from the service record
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int sdp_get_add_access_protos(const sdp_record_t *rec, sdp_list_t **protos);
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* Extract the list of browse groups to which the service belongs.
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* When set, seqp contains elements of GroupID (uint16_t)
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static inline int sdp_get_browse_groups(const sdp_record_t *rec, sdp_list_t **seqp)
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return sdp_get_uuidseq_attr(rec, SDP_ATTR_BROWSE_GRP_LIST, seqp);
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* Extract language attribute meta-data of the service record.
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* For each language in the service record, LangSeq has a struct of type
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int sdp_get_lang_attr(const sdp_record_t *rec, sdp_list_t **langSeq);
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* Extract the Bluetooth profile descriptor sequence from a record.
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* Each element in the list is of type sdp_profile_desc_t
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* which contains the UUID of the profile and its version number
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* (encoded as major and minor in the high-order 8bits
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* and low-order 8bits respectively of the uint16_t)
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int sdp_get_profile_descs(const sdp_record_t *rec, sdp_list_t **profDesc);
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* Extract SDP server version numbers
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* Note: that this is an attribute of the SDP server only and
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* contains a list of uint16_t each of which represent the
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* major and minor SDP version numbers supported by this server
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int sdp_get_server_ver(const sdp_record_t *rec, sdp_list_t **pVnumList);
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int sdp_get_service_id(const sdp_record_t *rec, uuid_t *uuid);
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int sdp_get_group_id(const sdp_record_t *rec, uuid_t *uuid);
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int sdp_get_record_state(const sdp_record_t *rec, uint32_t *svcRecState);
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int sdp_get_service_avail(const sdp_record_t *rec, uint8_t *svcAvail);
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int sdp_get_service_ttl(const sdp_record_t *rec, uint32_t *svcTTLInfo);
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int sdp_get_database_state(const sdp_record_t *rec, uint32_t *svcDBState);
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static inline int sdp_get_service_name(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_SVCNAME_PRIMARY, str, len);
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static inline int sdp_get_service_desc(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_SVCDESC_PRIMARY, str, len);
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static inline int sdp_get_provider_name(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_PROVNAME_PRIMARY, str, len);
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static inline int sdp_get_doc_url(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_DOC_URL, str, len);
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static inline int sdp_get_clnt_exec_url(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_CLNT_EXEC_URL, str, len);
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static inline int sdp_get_icon_url(const sdp_record_t *rec, char *str, int len)
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return sdp_get_string_attr(rec, SDP_ATTR_ICON_URL, str, len);
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* Set the supported features
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* sf should be a list of list with each feature data
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* Returns 0 on success -1 on fail
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int sdp_set_supp_feat(sdp_record_t *rec, const sdp_list_t *sf);
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* Get the supported features
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* seqp is set to a list of list with each feature data
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* Returns 0 on success, if an error occurred -1 is returned and errno is set
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int sdp_get_supp_feat(const sdp_record_t *rec, sdp_list_t **seqp);
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sdp_record_t *sdp_extract_pdu(const uint8_t *pdata, int bufsize, int *scanned);
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sdp_record_t *sdp_copy_record(sdp_record_t *rec);
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void sdp_data_print(sdp_data_t *data);
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void sdp_print_service_attr(sdp_list_t *alist);
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int sdp_attrid_comp_func(const void *key1, const void *key2);
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void sdp_set_seq_len(uint8_t *ptr, uint32_t length);
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void sdp_set_attrid(sdp_buf_t *pdu, uint16_t id);
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void sdp_append_to_pdu(sdp_buf_t *dst, sdp_data_t *d);
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void sdp_append_to_buf(sdp_buf_t *dst, uint8_t *data, uint32_t len);
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int sdp_gen_pdu(sdp_buf_t *pdu, sdp_data_t *data);
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int sdp_gen_record_pdu(const sdp_record_t *rec, sdp_buf_t *pdu);
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int sdp_extract_seqtype(const uint8_t *buf, int bufsize, uint8_t *dtdp, int *size);
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sdp_data_t *sdp_extract_attr(const uint8_t *pdata, int bufsize, int *extractedLength, sdp_record_t *rec);
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void sdp_pattern_add_uuid(sdp_record_t *rec, uuid_t *uuid);
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void sdp_pattern_add_uuidseq(sdp_record_t *rec, sdp_list_t *seq);
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int sdp_send_req_w4_rsp(sdp_session_t *session, uint8_t *req, uint8_t *rsp, uint32_t reqsize, uint32_t *rspsize);
631
#endif /* __SDP_LIB_H */
added
removed
lib/sdp_lib.h
