diff options
author | emax <emax@FreeBSD.org> | 2009-04-22 15:50:03 +0000 |
---|---|---|
committer | emax <emax@FreeBSD.org> | 2009-04-22 15:50:03 +0000 |
commit | 4eabe37bddadacacfb50b393da24dd1510236a49 (patch) | |
tree | db3379ae8531d9edbf4de686433ef446dead8607 | |
parent | 2afddc747486b4fa4879e84dd262b82cebf357d2 (diff) | |
download | FreeBSD-src-4eabe37bddadacacfb50b393da24dd1510236a49.zip FreeBSD-src-4eabe37bddadacacfb50b393da24dd1510236a49.tar.gz |
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
-rw-r--r-- | lib/libbluetooth/Makefile | 13 | ||||
-rw-r--r-- | lib/libbluetooth/bluetooth.3 | 281 | ||||
-rw-r--r-- | lib/libbluetooth/bluetooth.h | 42 | ||||
-rw-r--r-- | lib/libbluetooth/hci.c | 519 |
4 files changed, 836 insertions, 19 deletions
diff --git a/lib/libbluetooth/Makefile b/lib/libbluetooth/Makefile index b64fbb4..763c574 100644 --- a/lib/libbluetooth/Makefile +++ b/lib/libbluetooth/Makefile @@ -33,6 +33,19 @@ MLINKS+= bluetooth.3 bt_devname.3 MLINKS+= bluetooth.3 bt_devinfo.3 MLINKS+= bluetooth.3 bt_devenum.3 +MLINKS+= bluetooth.3 bt_devopen.3 +MLINKS+= bluetooth.3 bt_devclose.3 +MLINKS+= bluetooth.3 bt_devsend.3 +MLINKS+= bluetooth.3 bt_devreq.3 +MLINKS+= bluetooth.3 bt_devfilter.3 +MLINKS+= bluetooth.3 bt_devfilter_pkt_set.3 +MLINKS+= bluetooth.3 bt_devfilter_pkt_clr.3 +MLINKS+= bluetooth.3 bt_devfilter_pkt_tst.3 +MLINKS+= bluetooth.3 bt_devfilter_evt_set.3 +MLINKS+= bluetooth.3 bt_devfilter_evt_clr.3 +MLINKS+= bluetooth.3 bt_devfilter_evt_tst.3 +MLINKS+= bluetooth.3 bt_devinquiry.3 + MLINKS+= bluetooth.3 bdaddr_same.3 MLINKS+= bluetooth.3 bdaddr_any.3 MLINKS+= bluetooth.3 bdaddr_copy.3 diff --git a/lib/libbluetooth/bluetooth.3 b/lib/libbluetooth/bluetooth.3 index 61fa1e4..c4eab90 100644 --- a/lib/libbluetooth/bluetooth.3 +++ b/lib/libbluetooth/bluetooth.3 @@ -25,7 +25,7 @@ .\" $Id: bluetooth.3,v 1.5 2003/05/20 23:04:30 max Exp $ .\" $FreeBSD$ .\" -.Dd February 13, 2009 +.Dd April 9, 2009 .Dt BLUETOOTH 3 .Os .Sh NAME @@ -41,6 +41,23 @@ .Nm bt_endprotoent , .Nm bt_aton , .Nm bt_ntoa , +.Nm bt_devaddr , +.Nm bt_devname , +.Nm bt_devinfo , +.Nm bt_devenum , +.Nm bt_devopen , +.Nm bt_devclose , +.Nm bt_devsend , +.Nm bt_devrecv , +.Nm bt_devreq , +.Nm bt_devfilter , +.Nm bt_devfilter_pkt_set , +.Nm bt_devfilter_pkt_clr , +.Nm bt_devfilter_pkt_tst , +.Nm bt_devfilter_evt_set , +.Nm bt_devfilter_evt_clr , +.Nm bt_devfilter_evt_tst , +.Nm bt_devinquiry , .Nm bdaddr_same , .Nm bdaddr_any , .Nm bdaddr_copy @@ -84,6 +101,32 @@ .Ft int .Fn bt_devenum "bt_devenum_cb_t *cb" "void *arg" .Ft int +.Fn bt_devopen "char const *devname" +.Ft int +.Fn bt_devclose "int s" +.Ft int +.Fn bt_devsend "int s" "uint16_t opcode" "void *param" "size_t plen" +.Ft ssize_t +.Fn bt_devrecv "int s" "void *buf" "size_t size" "time_t to" +.Ft int +.Fn bt_devreq "int s" "struct bt_devreq *r" "time_t to" +.Ft int +.Fn bt_devfilter "int s" "struct bt_devfilter const *new" "struct bt_devfilter *old" +.Ft void +.Fn bt_devfilter_pkt_set "struct bt_devfilter *filter" "uint8_t type" +.Ft void +.Fn bt_devfilter_pkt_clt "struct bt_devfilter *filter" "uint8_t type" +.Ft int +.Fn bt_devfilter_pkt_tst "struct bt_devfilter const *filter" "uint8_t type" +.Ft void +.Fn bt_devfilter_evt_set "struct bt_devfilter *filter" "uint8_t event" +.Ft void +.Fn bt_devfilter_evt_clt "struct bt_devfilter *filter" "uint8_t event" +.Ft int +.Fn bt_devfilter_evt_tst "struct bt_devfilter const *filter" "uint8_t event" +.Ft int +.Fn bt_devinquiry "char const *devname" "time_t length" "int num_rsp" "struct bt_devinquiry **ii" +.Ft int .Fn bdaddr_same "const bdaddr_t *a" "const bdaddr_t *b" .Ft int .Fn bdaddr_any "const bdaddr_t *a" @@ -311,6 +354,240 @@ The function returns number of successfully enumerated devices, or -1 if an error occurred. .Pp The +.Fn bt_devopen +function opens a Bluetooth device with the given +.Fa devname +and returns a connected and bound +.Dv HCI +socket handle. +The function returns -1 if an error has occurred. +.Pp +The +.Fn bt_devclose +closes the passed +.Dv HCI +socket handle +.Fa s , +previously obtained with +.Xr bt_devopen 3 . +.Pp +The +.Fn bt_devsend +function sends a Bluetooth +.Dv HCI +command with the given +.Fa opcode +to the provided socket +.Fa s , +previously obtained with +.Xr bt_devopen 3 . +The +.Fa opcode +parameter is exppected to be in the host byte order. +The +.Fa param +and +.Fa plen +parameters specify command parameters. +The +.Fn bt_devsend +function does not modify the +.Dv HCI +filter on the provided socket +.Fa s . +The function returns 0 on success, +or -1 if an error occurred. +.Pp +The +.Fn bt_devrecv +function receives one Bluetooth +.Dv HCI +packet from the socket +.Fa s , +previously obtained with +.Xr bt_devopen 3 . +The packet is placed into the provided buffer +.Fa buf +of size +.Fa size . +The +.Fa to +parameter specifies receive timeout in seconds. +Infinite timeout can be specified by passing negative value in the +.Fa to +parameter. +The +.Fn bt_devrecv +function does not modify the +.Dv HCI +filter on the provided socket +.Fa s . +The function returns total number of bytes recevied, +or -1 if an error occurred. +.Pp +The +.Fn bt_devreq +function makes a Bluetooth +.Dv HCI +request to the socket +.Fa s , +previously obtained with +.Xr bt_devopen 3 . +The function will send the specified command and will wait for the specified +event, +or timeout +.Fa to +seconds to occur. +The +.Vt bt_devreq +structure is defined as follows +.Bd -literal -offset indent +struct bt_devreq +{ + uint16_t opcode; + uint8_t event; + void *cparam; + size_t clen; + void *rparam; + size_t rlen; +}; +.Ed +.Pp +The +.Fa opcode +field specifies the command and is expected to be in the host byte order. +The +.Fa cparam +and +.Fa clen +fields specify command parameters data and command parameters data size +respectively. +The +.Fa event +field specifies which Bluetooth +.Dv HCI +event ID the function should wait for, otherwise it should be set to zero. +The +.Dv HCI +Command Complete and Command Status events are enabled by default. +The +.Fa rparam +and +.Fa rlen +parameters specify buffer and buffer size respectively where return +parameters should be placed. +The +.Fn bt_devreq +function temporarily modifies filter on the provided +.Dv HCI +socket +.Fa s . +The function returns 0 on success, or -1 if an error occurred. +.Pp +The +.Fn bt_devfilter +controls the local +.Dv HCI +filter associated with the socket +.Fa s , +previously obtained with +.Xr bt_devopen 3 . +Filtering can be done on packet types, i.e. +.Dv ACL , +.Dv SCO or +.Dv HCI , +command and event packets, and, in addition, on +.Dv HCI +event IDs. +Before applying the +.Fa new +filter (if provided) the function will try to obtain the current filter +from the socket +.Fa s +and place it into the +.Fa old +parameter (if provided). +The function returns 0 on success, or -1 if an error occurred. +.Pp +The +.Fn bt_devfilter_pkt_set , +.Fn bt_devfilter_pkt_clr +and +.Fn bt_devfilter_pkt_tst +functions can be used to modify and test the +.Dv HCI +filter +.Fa filter . +The +.Fa type +parameter specifies +.Dv HCI +packet type. +.Pp +The +.Fn bt_devfilter_evt_set , +.Fn bt_devfilter_evt_clr +and +.Fn bt_devfilter_evt_tst +functions can be used to modify and test the +.Dv HCI +event filter +.Fa filter . +The +.Fa event +parameter specifies +.Dv HCI +event ID. +.Pp +The +.Fn bt_devinquiry +function performs Bluetooth inquiry. +The +.Fa devname +parameter specifies which local Bluetooth device should perform an inquiry. +If not secified, i.e. +.Dv NULL , +then first available device will be used. +The +.Fa length +parameters specifies the total length of an inquiry in seconds. +If not specified, i.e. 0, default value will be used. +The +.Fa num_rsp +parameter specifies the number of responses that can be received before +the inquiry is halted. +If not specified, i.e. 0, default value will be used. +The +.Fa ii +parameter specifies where to place inquiry results. +On success, the function will return total number of inquiry results, +will allocate, +using +.Xr calloc 3 , +buffer to store all the inquiry results and +will return pointer to the allocated buffer in the +.Fa ii +parameter. +It is up to the caller of the function to dispose of the buffer using +.Xr free 3 +call. +The function returns -1 if an error has occurred. +The +.Vt bt_devinquiry +structure is defined as follows +.Bd -literal -offset indent +struct bt_devinquiry { + bdaddr_t bdaddr; + uint8_t pscan_rep_mode; + uint8_t pscan_period_mode; + uint8_t dev_class[3]; + uint16_t clock_offset; + int8_t rssi; + uint8_t data[240]; +}; +.Ed +.Pp +The .Fn bdaddr_same , .Fn bdaddr_any and @@ -444,6 +721,6 @@ will be bound and connected to the Bluetooth device being enumerated. .Sh AUTHORS .An Maksim Yevmenkin Aq m_evmenkin@yahoo.com .Sh BUGS -These functions use static data storage; +Some of those functions use static data storage; if the data is needed for future use, it should be copied before any subsequent calls overwrite it. diff --git a/lib/libbluetooth/bluetooth.h b/lib/libbluetooth/bluetooth.h index d481d05..5ad3c3c 100644 --- a/lib/libbluetooth/bluetooth.h +++ b/lib/libbluetooth/bluetooth.h @@ -39,6 +39,7 @@ #include <sys/endian.h> #include <sys/ioctl.h> #include <sys/socket.h> +#include <sys/uio.h> #include <sys/un.h> #include <errno.h> #include <netdb.h> @@ -46,6 +47,7 @@ #include <netgraph/bluetooth/include/ng_hci.h> #include <netgraph/bluetooth/include/ng_l2cap.h> #include <netgraph/bluetooth/include/ng_btsocket.h> +#include <time.h> __BEGIN_DECLS @@ -129,8 +131,48 @@ struct bt_devinfo uint8_t _padding[20]; /* leave space for future additions */ }; +struct bt_devreq +{ + uint16_t opcode; + uint8_t event; + void *cparam; + size_t clen; + void *rparam; + size_t rlen; +}; + +struct bt_devfilter { + bitstr_t bit_decl(packet_mask, 8); + bitstr_t bit_decl(event_mask, 256); +}; + +struct bt_devinquiry { + bdaddr_t bdaddr; + uint8_t pscan_rep_mode; + uint8_t pscan_period_mode; + uint8_t dev_class[3]; + uint16_t clock_offset; + int8_t rssi; + uint8_t data[240]; +}; + typedef int (bt_devenum_cb_t)(int, struct bt_devinfo const *, void *); +int bt_devopen (char const *devname); +int bt_devclose(int s); +int bt_devsend (int s, uint16_t opcode, void *param, size_t plen); +ssize_t bt_devrecv (int s, void *buf, size_t size, time_t to); +int bt_devreq (int s, struct bt_devreq *r, time_t to); +int bt_devfilter(int s, struct bt_devfilter const *new, + struct bt_devfilter *old); +void bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type); +void bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type); +int bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type); +void bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event); +void bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event); +int bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event); +int bt_devinquiry(char const *devname, time_t length, int num_rsp, + struct bt_devinquiry **ii); int bt_devinfo (struct bt_devinfo *di); int bt_devenum (bt_devenum_cb_t *cb, void *arg); diff --git a/lib/libbluetooth/hci.c b/lib/libbluetooth/hci.c index b6ae10b..74c3e63 100644 --- a/lib/libbluetooth/hci.c +++ b/lib/libbluetooth/hci.c @@ -30,15 +30,505 @@ * $FreeBSD$ */ +#include <assert.h> #include <bluetooth.h> +#include <inttypes.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> +#undef MIN +#define MIN(a, b) (((a) < (b))? (a) : (b)) + +static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname); static char * bt_dev2node (char const *devname, char *nodename, int nnlen); int +bt_devopen(char const *devname) +{ + struct sockaddr_hci ha; + bdaddr_t ba; + int s; + + if (devname == NULL) { + errno = EINVAL; + return (-1); + } + + memset(&ha, 0, sizeof(ha)); + ha.hci_len = sizeof(ha); + ha.hci_family = AF_BLUETOOTH; + + if (bt_aton(devname, &ba)) { + if (!bt_devname(ha.hci_node, &ba)) + return (-1); + } else if (bt_dev2node(devname, ha.hci_node, + sizeof(ha.hci_node)) == NULL) { + errno = ENXIO; + return (-1); + } + + s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI); + if (s < 0) + return (-1); + + if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 || + connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) { + close(s); + return (-1); + } + + return (s); +} + +int +bt_devclose(int s) +{ + return (close(s)); +} + +int +bt_devsend(int s, uint16_t opcode, void *param, size_t plen) +{ + ng_hci_cmd_pkt_t h; + struct iovec iv[2]; + int ivn; + + if ((plen == 0 && param != NULL) || + (plen > 0 && param == NULL) || + plen > UINT8_MAX) { + errno = EINVAL; + return (-1); + } + + iv[0].iov_base = &h; + iv[0].iov_len = sizeof(h); + ivn = 1; + + h.type = NG_HCI_CMD_PKT; + h.opcode = htole16(opcode); + if (plen > 0) { + h.length = plen; + + 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) { union { @@ -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) { |