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NetBSD 6.1.5 - man page for bt_aton (netbsd section 3)

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BLUETOOTH(3)			   BSD Library Functions Manual 		     BLUETOOTH(3)

NAME
     bt_gethostbyname, bt_gethostbyaddr, bt_gethostent, bt_sethostent, bt_endhostent,
     bt_getprotobyname, bt_getprotobynumber, bt_getprotoent, bt_setprotoent, bt_endprotoent,
     bt_aton, bt_ntoa -- Bluetooth host lookup routines

LIBRARY
     library ``libbluetooth''

SYNOPSIS
     #include <bluetooth.h>

     struct hostent *
     bt_gethostbyname(const char *name);

     struct hostent *
     bt_gethostbyaddr(const char *addr, int len, int type);

     struct hostent *
     bt_gethostent(void);

     void
     bt_sethostent(int stayopen);

     void
     bt_endhostent(void);

     struct protoent *
     bt_getprotobyname(const char *name);

     struct protoent *
     bt_getprotobynumber(int proto);

     struct protoent *
     bt_getprotoent(void);

     void
     bt_setprotoent(int stayopen);

     void
     bt_endprotoent(void);

     int
     bt_aton(const char *str, bdaddr_t *ba);

     const char *
     bt_ntoa(const bdaddr_t *ba, char *str);

DESCRIPTION
     The bt_gethostent(), bt_gethostbyname(), and bt_gethostbyaddr() functions each return a
     pointer to an object with the hostent structure describing a Bluetooth host referenced by
     name or by address, respectively.

     The name argument passed to bt_gethostbyname() should point to a NUL-terminated hostname.
     The addr argument passed to bt_gethostbyaddr() should point to an address which is len bytes
     long, in binary form (i.e., not a Bluetooth BD_ADDR in human readable ASCII form).  The type
     argument specifies the address family of this address and must be set to AF_BLUETOOTH.

     The structure returned contains the information obtained from a line in /etc/bluetooth/hosts
     file.

     The bt_sethostent() function controls whether /etc/bluetooth/hosts file should stay open
     after each call to bt_gethostbyname() or bt_gethostbyaddr().  If the stayopen flag is non-
     zero, the file will not be closed.

     The bt_endhostent() function closes the /etc/bluetooth/hosts file.

     The bt_getprotoent(), bt_getprotobyname(), and bt_getprotobynumber() functions each return a
     pointer to an object with the protoent structure describing a Bluetooth Protocol Service
     Multiplexor referenced by name or number, respectively.

     The name argument passed to bt_getprotobyname() should point to a NUL-terminated Bluetooth
     Protocol Service Multiplexor name.  The proto argument passed to bt_getprotobynumber()
     should have numeric value of the desired Bluetooth Protocol Service Multiplexor.

     The structure returned contains the information obtained from a line in
     /etc/bluetooth/protocols file.

     The bt_setprotoent() function controls whether /etc/bluetooth/protocols file should stay
     open after each call to bt_getprotobyname() or bt_getprotobynumber().  If the stayopen flag
     is non-zero, the file will not be closed.

     The bt_endprotoent() function closes the /etc/bluetooth/protocols file.

     The bt_aton() routine interprets the specified character string as a Bluetooth address,
     placing the address into the structure provided.  It returns 1 if the string was success-
     fully interpreted, or 0 if the string is invalid.

     The routine bt_ntoa() takes a Bluetooth address and places an ASCII string representing the
     address into the buffer provided.	It is up to the caller to ensure that provided buffer has
     enough space.  If no buffer was provided then an internal static buffer will be used.

FILES
     /etc/bluetooth/hosts
     /etc/bluetooth/protocols

EXAMPLES
     Print out the hostname associated with a specific BD_ADDR:

	   const char *bdstr = "00:01:02:03:04:05";
	   bdaddr_t bd;
	   struct hostent *hp;

	   if (!bt_aton(bdstr, &bd))
		   errx(1, "can't parse BD_ADDR %s", bdstr);

	   if ((hp = bt_gethostbyaddr((const char *)&bd,
	       sizeof(bd), AF_BLUETOOTH)) == NULL)
		   errx(1, "no name associated with %s", bdstr);

	   printf("name associated with %s is %s\n", bdstr, hp->h_name);

DIAGNOSTICS
     Error return status from bt_gethostent(), bt_gethostbyname(), and bt_gethostbyaddr() is
     indicated by return of a NULL pointer.  The external integer h_errno may then be checked to
     see whether this is a temporary failure or an invalid or unknown host.  The routine
     herror(3) can be used to print an error message describing the failure.  If its argument
     string is non-NULL, it is printed, followed by a colon and a space.  The error message is
     printed with a trailing newline.

     The variable h_errno can have the following values:

     HOST_NOT_FOUND  No such host is known.

     NO_RECOVERY     Some unexpected server failure was encountered.  This is a non-recoverable
		     error.

     The bt_getprotoent(), bt_getprotobyname(), and bt_getprotobynumber() return NULL on EOF or
     error.

SEE ALSO
     gethostbyaddr(3), gethostbyname(3), getprotobyname(3), getprotobynumber(3), herror(3),
     inet_aton(3), inet_ntoa(3)

HISTORY
     libbluetooth first appeared in FreeBSD was ported to NetBSD 4.0 and extended by Iain Hibbert
     for Itronix, Inc.

AUTHORS
     Maksim Yevmenkin <m_evmenkin@yahoo.com>
     Iain Hibbert

CAVEATS
     The bt_gethostent() function reads the next line of /etc/bluetooth/hosts, opening the file
     if necessary.

     The bt_sethostent() function opens and/or rewinds the /etc/bluetooth/hosts file.

     The bt_getprotoent() function reads the next line of /etc/bluetooth/protocols, opening the
     file if necessary.

     The bt_setprotoent() function opens and/or rewinds the /etc/bluetooth/protocols file.

BUGS
     These functions use static data storage; if the data is needed for future use, it should be
     copied before any subsequent calls overwrite it.

BSD					 October 25, 2011				      BSD
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