Implement low-level Bluetooth HCI API.
This should make it easier to make Linux BlueZ libhci port. Reviewed by: Iain Hibbert < plunky -at- rya-online -dot- net > of NetBSD MFC after: 1 week Inspired by: Linux BlueZ Inspired by: NetBSD
This commit is contained in:
emax
parent
2afddc7474
commit
4eabe37bdd
@ -33,6 +33,19 @@ MLINKS+= bluetooth.3 bt_devname.3
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MLINKS+= bluetooth.3 bt_devinfo.3
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MLINKS+= bluetooth.3 bt_devenum.3
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MLINKS+= bluetooth.3 bt_devopen.3
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MLINKS+= bluetooth.3 bt_devclose.3
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MLINKS+= bluetooth.3 bt_devsend.3
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MLINKS+= bluetooth.3 bt_devreq.3
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MLINKS+= bluetooth.3 bt_devfilter.3
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MLINKS+= bluetooth.3 bt_devfilter_pkt_set.3
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MLINKS+= bluetooth.3 bt_devfilter_pkt_clr.3
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MLINKS+= bluetooth.3 bt_devfilter_pkt_tst.3
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MLINKS+= bluetooth.3 bt_devfilter_evt_set.3
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MLINKS+= bluetooth.3 bt_devfilter_evt_clr.3
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MLINKS+= bluetooth.3 bt_devfilter_evt_tst.3
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MLINKS+= bluetooth.3 bt_devinquiry.3
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MLINKS+= bluetooth.3 bdaddr_same.3
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MLINKS+= bluetooth.3 bdaddr_any.3
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MLINKS+= bluetooth.3 bdaddr_copy.3
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@ -25,7 +25,7 @@
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.\" $Id: bluetooth.3,v 1.5 2003/05/20 23:04:30 max Exp $
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.\" $FreeBSD$
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.\"
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.Dd February 13, 2009
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.Dd April 9, 2009
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.Dt BLUETOOTH 3
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.Os
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.Sh NAME
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@ -41,6 +41,23 @@
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.Nm bt_endprotoent ,
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.Nm bt_aton ,
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.Nm bt_ntoa ,
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.Nm bt_devaddr ,
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.Nm bt_devname ,
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.Nm bt_devinfo ,
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.Nm bt_devenum ,
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.Nm bt_devopen ,
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.Nm bt_devclose ,
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.Nm bt_devsend ,
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.Nm bt_devrecv ,
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.Nm bt_devreq ,
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.Nm bt_devfilter ,
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.Nm bt_devfilter_pkt_set ,
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.Nm bt_devfilter_pkt_clr ,
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.Nm bt_devfilter_pkt_tst ,
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.Nm bt_devfilter_evt_set ,
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.Nm bt_devfilter_evt_clr ,
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.Nm bt_devfilter_evt_tst ,
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.Nm bt_devinquiry ,
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.Nm bdaddr_same ,
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.Nm bdaddr_any ,
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.Nm bdaddr_copy
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@ -84,6 +101,32 @@
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.Ft int
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.Fn bt_devenum "bt_devenum_cb_t *cb" "void *arg"
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.Ft int
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.Fn bt_devopen "char const *devname"
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.Ft int
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.Fn bt_devclose "int s"
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.Ft int
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.Fn bt_devsend "int s" "uint16_t opcode" "void *param" "size_t plen"
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.Ft ssize_t
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.Fn bt_devrecv "int s" "void *buf" "size_t size" "time_t to"
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.Ft int
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.Fn bt_devreq "int s" "struct bt_devreq *r" "time_t to"
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.Ft int
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.Fn bt_devfilter "int s" "struct bt_devfilter const *new" "struct bt_devfilter *old"
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.Ft void
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.Fn bt_devfilter_pkt_set "struct bt_devfilter *filter" "uint8_t type"
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.Ft void
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.Fn bt_devfilter_pkt_clt "struct bt_devfilter *filter" "uint8_t type"
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.Ft int
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.Fn bt_devfilter_pkt_tst "struct bt_devfilter const *filter" "uint8_t type"
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.Ft void
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.Fn bt_devfilter_evt_set "struct bt_devfilter *filter" "uint8_t event"
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.Ft void
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.Fn bt_devfilter_evt_clt "struct bt_devfilter *filter" "uint8_t event"
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.Ft int
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.Fn bt_devfilter_evt_tst "struct bt_devfilter const *filter" "uint8_t event"
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.Ft int
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.Fn bt_devinquiry "char const *devname" "time_t length" "int num_rsp" "struct bt_devinquiry **ii"
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.Ft int
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.Fn bdaddr_same "const bdaddr_t *a" "const bdaddr_t *b"
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.Ft int
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.Fn bdaddr_any "const bdaddr_t *a"
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@ -311,6 +354,240 @@ The function returns number of successfully enumerated devices,
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or -1 if an error occurred.
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.Pp
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The
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.Fn bt_devopen
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function opens a Bluetooth device with the given
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.Fa devname
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and returns a connected and bound
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.Dv HCI
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socket handle.
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The function returns -1 if an error has occurred.
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.Pp
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The
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.Fn bt_devclose
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closes the passed
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.Dv HCI
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socket handle
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.Fa s ,
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previously obtained with
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.Xr bt_devopen 3 .
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.Pp
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The
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.Fn bt_devsend
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function sends a Bluetooth
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.Dv HCI
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command with the given
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.Fa opcode
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to the provided socket
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.Fa s ,
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previously obtained with
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.Xr bt_devopen 3 .
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The
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.Fa opcode
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parameter is exppected to be in the host byte order.
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The
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.Fa param
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and
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.Fa plen
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parameters specify command parameters.
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The
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.Fn bt_devsend
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function does not modify the
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.Dv HCI
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filter on the provided socket
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.Fa s .
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The function returns 0 on success,
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or -1 if an error occurred.
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.Pp
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The
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.Fn bt_devrecv
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function receives one Bluetooth
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.Dv HCI
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packet from the socket
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.Fa s ,
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previously obtained with
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.Xr bt_devopen 3 .
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The packet is placed into the provided buffer
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.Fa buf
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of size
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.Fa size .
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The
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.Fa to
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parameter specifies receive timeout in seconds.
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Infinite timeout can be specified by passing negative value in the
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.Fa to
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parameter.
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The
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.Fn bt_devrecv
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function does not modify the
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.Dv HCI
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filter on the provided socket
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.Fa s .
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The function returns total number of bytes recevied,
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or -1 if an error occurred.
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.Pp
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The
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.Fn bt_devreq
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function makes a Bluetooth
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.Dv HCI
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request to the socket
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.Fa s ,
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previously obtained with
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.Xr bt_devopen 3 .
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The function will send the specified command and will wait for the specified
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event,
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or timeout
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.Fa to
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seconds to occur.
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The
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.Vt bt_devreq
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structure is defined as follows
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.Bd -literal -offset indent
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struct bt_devreq
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{
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uint16_t opcode;
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uint8_t event;
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void *cparam;
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size_t clen;
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void *rparam;
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size_t rlen;
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};
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.Ed
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.Pp
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The
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.Fa opcode
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field specifies the command and is expected to be in the host byte order.
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The
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.Fa cparam
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and
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.Fa clen
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fields specify command parameters data and command parameters data size
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respectively.
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The
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.Fa event
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field specifies which Bluetooth
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.Dv HCI
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event ID the function should wait for, otherwise it should be set to zero.
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The
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.Dv HCI
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Command Complete and Command Status events are enabled by default.
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The
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.Fa rparam
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and
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.Fa rlen
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parameters specify buffer and buffer size respectively where return
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parameters should be placed.
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The
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.Fn bt_devreq
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function temporarily modifies filter on the provided
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.Dv HCI
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socket
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.Fa s .
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The function returns 0 on success, or -1 if an error occurred.
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.Pp
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The
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.Fn bt_devfilter
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controls the local
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.Dv HCI
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filter associated with the socket
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.Fa s ,
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previously obtained with
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.Xr bt_devopen 3 .
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Filtering can be done on packet types, i.e.
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.Dv ACL ,
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.Dv SCO or
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.Dv HCI ,
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command and event packets, and, in addition, on
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.Dv HCI
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event IDs.
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Before applying the
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.Fa new
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filter (if provided) the function will try to obtain the current filter
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from the socket
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.Fa s
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and place it into the
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.Fa old
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parameter (if provided).
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The function returns 0 on success, or -1 if an error occurred.
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.Pp
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The
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.Fn bt_devfilter_pkt_set ,
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.Fn bt_devfilter_pkt_clr
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and
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.Fn bt_devfilter_pkt_tst
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functions can be used to modify and test the
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.Dv HCI
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filter
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.Fa filter .
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The
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.Fa type
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parameter specifies
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.Dv HCI
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packet type.
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.Pp
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The
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.Fn bt_devfilter_evt_set ,
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.Fn bt_devfilter_evt_clr
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and
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.Fn bt_devfilter_evt_tst
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functions can be used to modify and test the
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.Dv HCI
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event filter
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.Fa filter .
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The
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.Fa event
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parameter specifies
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.Dv HCI
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event ID.
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.Pp
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The
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.Fn bt_devinquiry
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function performs Bluetooth inquiry.
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The
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.Fa devname
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parameter specifies which local Bluetooth device should perform an inquiry.
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If not secified, i.e.
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.Dv NULL ,
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then first available device will be used.
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The
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.Fa length
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parameters specifies the total length of an inquiry in seconds.
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If not specified, i.e. 0, default value will be used.
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The
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.Fa num_rsp
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parameter specifies the number of responses that can be received before
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the inquiry is halted.
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If not specified, i.e. 0, default value will be used.
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The
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.Fa ii
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parameter specifies where to place inquiry results.
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On success, the function will return total number of inquiry results,
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will allocate,
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using
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.Xr calloc 3 ,
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buffer to store all the inquiry results and
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will return pointer to the allocated buffer in the
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.Fa ii
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parameter.
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It is up to the caller of the function to dispose of the buffer using
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.Xr free 3
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call.
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The function returns -1 if an error has occurred.
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The
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.Vt bt_devinquiry
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structure is defined as follows
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.Bd -literal -offset indent
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struct bt_devinquiry {
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bdaddr_t bdaddr;
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uint8_t pscan_rep_mode;
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uint8_t pscan_period_mode;
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uint8_t dev_class[3];
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uint16_t clock_offset;
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int8_t rssi;
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uint8_t data[240];
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};
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.Ed
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.Pp
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The
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.Fn bdaddr_same ,
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.Fn bdaddr_any
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and
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@ -444,6 +721,6 @@ will be bound and connected to the Bluetooth device being enumerated.
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.Sh AUTHORS
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.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com
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.Sh BUGS
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These functions use static data storage;
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Some of those functions use static data storage;
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if the data is needed for future use, it should be
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copied before any subsequent calls overwrite it.
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@ -39,6 +39,7 @@
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#include <sys/endian.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/un.h>
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#include <errno.h>
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#include <netdb.h>
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@ -46,6 +47,7 @@
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#include <netgraph/bluetooth/include/ng_hci.h>
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#include <netgraph/bluetooth/include/ng_l2cap.h>
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#include <netgraph/bluetooth/include/ng_btsocket.h>
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#include <time.h>
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__BEGIN_DECLS
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@ -129,8 +131,48 @@ struct bt_devinfo
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uint8_t _padding[20]; /* leave space for future additions */
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};
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struct bt_devreq
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{
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uint16_t opcode;
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uint8_t event;
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void *cparam;
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size_t clen;
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void *rparam;
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size_t rlen;
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};
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struct bt_devfilter {
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bitstr_t bit_decl(packet_mask, 8);
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bitstr_t bit_decl(event_mask, 256);
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};
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struct bt_devinquiry {
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bdaddr_t bdaddr;
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uint8_t pscan_rep_mode;
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uint8_t pscan_period_mode;
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uint8_t dev_class[3];
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uint16_t clock_offset;
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int8_t rssi;
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uint8_t data[240];
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};
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typedef int (bt_devenum_cb_t)(int, struct bt_devinfo const *, void *);
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int bt_devopen (char const *devname);
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int bt_devclose(int s);
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int bt_devsend (int s, uint16_t opcode, void *param, size_t plen);
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ssize_t bt_devrecv (int s, void *buf, size_t size, time_t to);
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int bt_devreq (int s, struct bt_devreq *r, time_t to);
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int bt_devfilter(int s, struct bt_devfilter const *new,
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struct bt_devfilter *old);
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void bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type);
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void bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type);
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int bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type);
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void bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event);
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void bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event);
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int bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event);
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int bt_devinquiry(char const *devname, time_t length, int num_rsp,
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struct bt_devinquiry **ii);
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int bt_devinfo (struct bt_devinfo *di);
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int bt_devenum (bt_devenum_cb_t *cb, void *arg);
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@ -30,14 +30,504 @@
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* $FreeBSD$
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*/
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#include <assert.h>
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#include <bluetooth.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#undef MIN
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#define MIN(a, b) (((a) < (b))? (a) : (b))
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static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname);
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static char * bt_dev2node (char const *devname, char *nodename, int nnlen);
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int
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bt_devopen(char const *devname)
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{
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struct sockaddr_hci ha;
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bdaddr_t ba;
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int s;
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if (devname == NULL) {
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errno = EINVAL;
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return (-1);
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}
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memset(&ha, 0, sizeof(ha));
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ha.hci_len = sizeof(ha);
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ha.hci_family = AF_BLUETOOTH;
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if (bt_aton(devname, &ba)) {
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if (!bt_devname(ha.hci_node, &ba))
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return (-1);
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} else if (bt_dev2node(devname, ha.hci_node,
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sizeof(ha.hci_node)) == NULL) {
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errno = ENXIO;
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return (-1);
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}
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s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
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if (s < 0)
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return (-1);
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if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
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connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) {
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close(s);
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return (-1);
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}
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return (s);
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}
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int
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bt_devclose(int s)
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{
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return (close(s));
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}
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int
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bt_devsend(int s, uint16_t opcode, void *param, size_t plen)
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{
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ng_hci_cmd_pkt_t h;
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struct iovec iv[2];
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int ivn;
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if ((plen == 0 && param != NULL) ||
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(plen > 0 && param == NULL) ||
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plen > UINT8_MAX) {
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errno = EINVAL;
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return (-1);
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}
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iv[0].iov_base = &h;
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iv[0].iov_len = sizeof(h);
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ivn = 1;
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h.type = NG_HCI_CMD_PKT;
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h.opcode = htole16(opcode);
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if (plen > 0) {
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h.length = plen;
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||||
iv[1].iov_base = param;
|
||||
iv[1].iov_len = plen;
|
||||
ivn = 2;
|
||||
} else
|
||||
h.length = 0;
|
||||
|
||||
while (writev(s, iv, ivn) < 0) {
|
||||
if (errno == EAGAIN || errno == EINTR)
|
||||
continue;
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
ssize_t
|
||||
bt_devrecv(int s, void *buf, size_t size, time_t to)
|
||||
{
|
||||
ssize_t n;
|
||||
|
||||
if (buf == NULL || size == 0) {
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (to >= 0) {
|
||||
fd_set rfd;
|
||||
struct timeval tv;
|
||||
|
||||
FD_ZERO(&rfd);
|
||||
FD_SET(s, &rfd);
|
||||
|
||||
tv.tv_sec = to;
|
||||
tv.tv_usec = 0;
|
||||
|
||||
while ((n = select(s + 1, &rfd, NULL, NULL, &tv)) < 0) {
|
||||
if (errno == EAGAIN || errno == EINTR)
|
||||
continue;
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (n == 0) {
|
||||
errno = ETIMEDOUT;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
assert(FD_ISSET(s, &rfd));
|
||||
}
|
||||
|
||||
while ((n = read(s, buf, size)) < 0) {
|
||||
if (errno == EAGAIN || errno == EINTR)
|
||||
continue;
|
||||
|
||||
return (-1);
|
||||
}
|
||||
|
||||
switch (*((uint8_t *) buf)) {
|
||||
case NG_HCI_CMD_PKT: {
|
||||
ng_hci_cmd_pkt_t *h = (ng_hci_cmd_pkt_t *) buf;
|
||||
|
||||
if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
|
||||
return (n);
|
||||
} break;
|
||||
|
||||
case NG_HCI_ACL_DATA_PKT: {
|
||||
ng_hci_acldata_pkt_t *h = (ng_hci_acldata_pkt_t *) buf;
|
||||
|
||||
if (n >= sizeof(*h) && n == (sizeof(*h) + le16toh(h->length)))
|
||||
return (n);
|
||||
} break;
|
||||
|
||||
case NG_HCI_SCO_DATA_PKT: {
|
||||
ng_hci_scodata_pkt_t *h = (ng_hci_scodata_pkt_t *) buf;
|
||||
|
||||
if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
|
||||
return (n);
|
||||
} break;
|
||||
|
||||
case NG_HCI_EVENT_PKT: {
|
||||
ng_hci_event_pkt_t *h = (ng_hci_event_pkt_t *) buf;
|
||||
|
||||
if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
|
||||
return (n);
|
||||
} break;
|
||||
}
|
||||
|
||||
errno = EIO;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
int
|
||||
bt_devreq(int s, struct bt_devreq *r, time_t to)
|
||||
{
|
||||
uint8_t buf[320]; /* more than enough */
|
||||
ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
|
||||
ng_hci_command_compl_ep *cc = (ng_hci_command_compl_ep *)(e+1);
|
||||
ng_hci_command_status_ep *cs = (ng_hci_command_status_ep*)(e+1);
|
||||
struct bt_devfilter old, new;
|
||||
time_t t_end;
|
||||
uint16_t opcode;
|
||||
ssize_t n;
|
||||
int error;
|
||||
|
||||
if (s < 0 || r == NULL || to < 0) {
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if ((r->rlen == 0 && r->rparam != NULL) ||
|
||||
(r->rlen > 0 && r->rparam == NULL)) {
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
memset(&new, 0, sizeof(new));
|
||||
bt_devfilter_pkt_set(&new, NG_HCI_EVENT_PKT);
|
||||
bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_COMPL);
|
||||
bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_STATUS);
|
||||
if (r->event != 0)
|
||||
bt_devfilter_evt_set(&new, r->event);
|
||||
|
||||
if (bt_devfilter(s, &new, &old) < 0)
|
||||
return (-1);
|
||||
|
||||
error = 0;
|
||||
|
||||
n = bt_devsend(s, r->opcode, r->cparam, r->clen);
|
||||
if (n < 0) {
|
||||
error = errno;
|
||||
goto out;
|
||||
}
|
||||
|
||||
opcode = htole16(r->opcode);
|
||||
t_end = time(NULL) + to;
|
||||
|
||||
do {
|
||||
to = t_end - time(NULL);
|
||||
if (to < 0)
|
||||
to = 0;
|
||||
|
||||
n = bt_devrecv(s, buf, sizeof(buf), to);
|
||||
if (n < 0) {
|
||||
error = errno;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (e->type != NG_HCI_EVENT_PKT) {
|
||||
error = EIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
n -= sizeof(*e);
|
||||
|
||||
switch (e->event) {
|
||||
case NG_HCI_EVENT_COMMAND_COMPL:
|
||||
if (cc->opcode == opcode) {
|
||||
n -= sizeof(*cc);
|
||||
|
||||
if (r->rlen >= n) {
|
||||
r->rlen = n;
|
||||
memcpy(r->rparam, cc + 1, r->rlen);
|
||||
}
|
||||
|
||||
goto out;
|
||||
}
|
||||
break;
|
||||
|
||||
case NG_HCI_EVENT_COMMAND_STATUS:
|
||||
if (cs->opcode == opcode) {
|
||||
if (r->event != NG_HCI_EVENT_COMMAND_STATUS) {
|
||||
if (cs->status != 0) {
|
||||
error = EIO;
|
||||
goto out;
|
||||
}
|
||||
} else {
|
||||
if (r->rlen >= n) {
|
||||
r->rlen = n;
|
||||
memcpy(r->rparam, cs, r->rlen);
|
||||
}
|
||||
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
if (e->event == r->event) {
|
||||
if (r->rlen >= n) {
|
||||
r->rlen = n;
|
||||
memcpy(r->rparam, e + 1, r->rlen);
|
||||
}
|
||||
|
||||
goto out;
|
||||
}
|
||||
break;
|
||||
}
|
||||
} while (to > 0);
|
||||
|
||||
error = ETIMEDOUT;
|
||||
out:
|
||||
bt_devfilter(s, &old, NULL);
|
||||
|
||||
if (error != 0) {
|
||||
errno = error;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
bt_devfilter(int s, struct bt_devfilter const *new, struct bt_devfilter *old)
|
||||
{
|
||||
struct ng_btsocket_hci_raw_filter f;
|
||||
socklen_t len;
|
||||
|
||||
if (new == NULL && old == NULL) {
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (old != NULL) {
|
||||
len = sizeof(f);
|
||||
if (getsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, &len) < 0)
|
||||
return (-1);
|
||||
|
||||
memset(old, 0, sizeof(*old));
|
||||
memcpy(old->packet_mask, &f.packet_mask,
|
||||
MIN(sizeof(old->packet_mask), sizeof(f.packet_mask)));
|
||||
memcpy(old->event_mask, &f.event_mask,
|
||||
MIN(sizeof(old->event_mask), sizeof(f.packet_mask)));
|
||||
}
|
||||
|
||||
if (new != NULL) {
|
||||
memset(&f, 0, sizeof(f));
|
||||
memcpy(&f.packet_mask, new->packet_mask,
|
||||
MIN(sizeof(f.packet_mask), sizeof(new->event_mask)));
|
||||
memcpy(&f.event_mask, new->event_mask,
|
||||
MIN(sizeof(f.event_mask), sizeof(new->event_mask)));
|
||||
|
||||
len = sizeof(f);
|
||||
if (setsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, len) < 0)
|
||||
return (-1);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type)
|
||||
{
|
||||
bit_set(filter->packet_mask, type - 1);
|
||||
}
|
||||
|
||||
void
|
||||
bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type)
|
||||
{
|
||||
bit_clear(filter->packet_mask, type - 1);
|
||||
}
|
||||
|
||||
int
|
||||
bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type)
|
||||
{
|
||||
return (bit_test(filter->packet_mask, type - 1));
|
||||
}
|
||||
|
||||
void
|
||||
bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event)
|
||||
{
|
||||
bit_set(filter->event_mask, event - 1);
|
||||
}
|
||||
|
||||
void
|
||||
bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event)
|
||||
{
|
||||
bit_clear(filter->event_mask, event - 1);
|
||||
}
|
||||
|
||||
int
|
||||
bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event)
|
||||
{
|
||||
return (bit_test(filter->event_mask, event - 1));
|
||||
}
|
||||
|
||||
int
|
||||
bt_devinquiry(char const *devname, time_t length, int num_rsp,
|
||||
struct bt_devinquiry **ii)
|
||||
{
|
||||
uint8_t buf[320];
|
||||
char _devname[HCI_DEVNAME_SIZE];
|
||||
struct bt_devfilter f;
|
||||
ng_hci_inquiry_cp *cp = (ng_hci_inquiry_cp *) buf;
|
||||
ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
|
||||
ng_hci_inquiry_result_ep *ep = (ng_hci_inquiry_result_ep *)(e+1);
|
||||
ng_hci_inquiry_response *ir;
|
||||
struct bt_devinquiry *i;
|
||||
int s, n;
|
||||
time_t to;
|
||||
|
||||
if (ii == NULL) {
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (devname == NULL) {
|
||||
memset(_devname, 0, sizeof(_devname));
|
||||
devname = _devname;
|
||||
|
||||
n = bt_devenum(bt_devany_cb, _devname);
|
||||
if (n <= 0) {
|
||||
if (n == 0)
|
||||
*ii = NULL;
|
||||
|
||||
return (n);
|
||||
}
|
||||
}
|
||||
|
||||
s = bt_devopen(devname);
|
||||
if (s < 0)
|
||||
return (-1);
|
||||
|
||||
if (bt_devfilter(s, NULL, &f) < 0) {
|
||||
bt_devclose(s);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_COMPL);
|
||||
bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_RESULT);
|
||||
|
||||
if (bt_devfilter(s, &f, NULL) < 0) {
|
||||
bt_devclose(s);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
/* Always use GIAC LAP */
|
||||
cp->lap[0] = 0x33;
|
||||
cp->lap[1] = 0x8b;
|
||||
cp->lap[2] = 0x9e;
|
||||
|
||||
/* Calculate inquire length in 1.28 second units */
|
||||
to = (time_t) ((double) length / 1.28);
|
||||
if (to <= 0)
|
||||
cp->inquiry_length = 4; /* 5.12 seconds */
|
||||
else if (to > 254)
|
||||
cp->inquiry_length = 255; /* 326.40 seconds */
|
||||
else
|
||||
cp->inquiry_length = to + 1;
|
||||
|
||||
to = (time_t)((double) cp->inquiry_length * 1.28) + 1;
|
||||
|
||||
if (num_rsp <= 0 || num_rsp > 255)
|
||||
num_rsp = 8;
|
||||
cp->num_responses = (uint8_t) num_rsp;
|
||||
|
||||
i = *ii = calloc(num_rsp, sizeof(struct bt_devinquiry));
|
||||
if (i == NULL) {
|
||||
bt_devclose(s);
|
||||
errno = ENOMEM;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (bt_devsend(s,
|
||||
NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, NG_HCI_OCF_INQUIRY),
|
||||
cp, sizeof(*cp)) < 0) {
|
||||
free(i);
|
||||
bt_devclose(s);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
wait_for_more:
|
||||
|
||||
n = bt_devrecv(s, buf, sizeof(buf), to);
|
||||
if (n < 0) {
|
||||
free(i);
|
||||
bt_devclose(s);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (n < sizeof(ng_hci_event_pkt_t)) {
|
||||
free(i);
|
||||
bt_devclose(s);
|
||||
errno = EIO;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
switch (e->event) {
|
||||
case NG_HCI_EVENT_INQUIRY_COMPL:
|
||||
break;
|
||||
|
||||
case NG_HCI_EVENT_INQUIRY_RESULT:
|
||||
ir = (ng_hci_inquiry_response *)(ep + 1);
|
||||
|
||||
for (n = 0; n < MIN(ep->num_responses, num_rsp); n ++) {
|
||||
bdaddr_copy(&i->bdaddr, &ir->bdaddr);
|
||||
i->pscan_rep_mode = ir->page_scan_rep_mode;
|
||||
i->pscan_period_mode = ir->page_scan_period_mode;
|
||||
memcpy(i->dev_class, ir->uclass, sizeof(i->dev_class));
|
||||
i->clock_offset = le16toh(ir->clock_offset);
|
||||
|
||||
ir ++;
|
||||
i ++;
|
||||
num_rsp --;
|
||||
}
|
||||
/* FALLTHROUGH */
|
||||
|
||||
default:
|
||||
goto wait_for_more;
|
||||
/* NOT REACHED */
|
||||
}
|
||||
|
||||
bt_devclose(s);
|
||||
|
||||
return (i - *ii);
|
||||
}
|
||||
|
||||
int
|
||||
bt_devinfo(struct bt_devinfo *di)
|
||||
{
|
||||
@ -53,6 +543,7 @@ bt_devinfo(struct bt_devinfo *di)
|
||||
struct ng_btsocket_hci_raw_node_debug r8;
|
||||
} rp;
|
||||
struct sockaddr_hci ha;
|
||||
socklen_t halen;
|
||||
int s, rval;
|
||||
|
||||
if (di == NULL) {
|
||||
@ -60,27 +551,14 @@ bt_devinfo(struct bt_devinfo *di)
|
||||
return (-1);
|
||||
}
|
||||
|
||||
memset(&ha, 0, sizeof(ha));
|
||||
ha.hci_len = sizeof(ha);
|
||||
ha.hci_family = AF_BLUETOOTH;
|
||||
|
||||
if (bt_aton(di->devname, &rp.r1.bdaddr)) {
|
||||
if (!bt_devname(ha.hci_node, &rp.r1.bdaddr))
|
||||
return (-1);
|
||||
} else if (bt_dev2node(di->devname, ha.hci_node,
|
||||
sizeof(ha.hci_node)) == NULL) {
|
||||
errno = ENXIO;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
|
||||
s = bt_devopen(di->devname);
|
||||
if (s < 0)
|
||||
return (-1);
|
||||
|
||||
rval = -1;
|
||||
|
||||
if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
|
||||
connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0)
|
||||
halen = sizeof(ha);
|
||||
if (getsockname(s, (struct sockaddr *) &ha, &halen) < 0)
|
||||
goto bad;
|
||||
strlcpy(di->devname, ha.hci_node, sizeof(di->devname));
|
||||
|
||||
@ -138,7 +616,7 @@ bt_devinfo(struct bt_devinfo *di)
|
||||
|
||||
rval = 0;
|
||||
bad:
|
||||
close(s);
|
||||
bt_devclose(s);
|
||||
|
||||
return (rval);
|
||||
}
|
||||
@ -205,6 +683,13 @@ bt_devenum(bt_devenum_cb_t cb, void *arg)
|
||||
return (count);
|
||||
}
|
||||
|
||||
static int
|
||||
bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname)
|
||||
{
|
||||
strlcpy((char *) xdevname, di->devname, HCI_DEVNAME_SIZE);
|
||||
return (1);
|
||||
}
|
||||
|
||||
static char *
|
||||
bt_dev2node(char const *devname, char *nodename, int nnlen)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user