NAME    [Toc]    [Back]

     unimsg, uni_str2nsap, uni_nsap2str, uni_prefix2str, uni_e1642nsap,
     uni_nsap2e164 -- ATM signalling library - address handling

LIBRARY    [Toc]    [Back]

     Begemot ATM signalling library (libunimsg, -lunimsg)

SYNOPSIS    [Toc]    [Back]

     #include <netnatm/addr.h>

     int
     uni_str2nsap(u_char *nsap, const char *str);

     void
     uni_nsap2str(char *str, const u_char *nsap, int dots);

     void
     uni_prefix2str(char *str, const u_char *prefix, u_int len, int dots);

     int
     uni_e1642nsap(u_char *nsap, const char *e164);

     int
     uni_nsap2e164(char *e164, const u_char *nsap, int check);

DESCRIPTION    [Toc]    [Back]

     The UNI message library contains a number of utility functions to handle
     NSAP and E.164 addresses.

     The function uni_str2nsap() parses a string and interprets it as an NSAP
     address.  The string should consist of exact 40 hexadecimal digits (upper
     and lower case are allowed) and any number of dots at any position.  Any
     other character is illegal.  The resulting NSAP address is written to the
     buffer pointed to by nsap.  This buffer should be at least 20 bytes.  On
     success the funtion returns 0.  If an parsing error happens -1 is
     returned.

     The function uni_nsap2str() converts the NSAP address pointed to by nsap
     into a string.  For some commonly used NSAP formats (those with leading
     octets 0x39, 0x45 or 0x47) dots may be inserted to make the address more
     readable by passing a non-0 value in dots.  The buffer pointed to by str
     should be large enough to hold the resulting string plus the terminating
     NUL.  A size of 80 byte is large enough for all cases.

     The function uni_prefix2str() converts an NSAP prefix to a string.  The
     length of the NSAP prefix in bytes is passed in len.  uni_nsap2str(str,
     nsap, dots) is equivalent to uni_prefix2str(str, nsap, 20, dots).

     The function uni_e1642nsap() converts an E.164 address given as an ASCII
     string to an embedded E.164 NSAP address.	The string pointed to by e164
     must consist of at least 1 and not more than 15 ASCII digits.  The function
 returns 0 on success and -1 if the E.164 address was malformed.

     The function uni_nsap2e164() extracts the E.164 address from an embedded
     E.164 NSAP address.  The argument check specifies whether the NSAP
     address should be checked for correct syntax.  If check is 0 the last 11
     bytes of the address are ignored. If check is 1 the last 11 bytes except
     the selector byte must be zero.  If check is 2 the last 11 bytes must be
     zero.  The function returns 0 on success and -1 when the NSAP address was
     not an embedded E.164 NSAP or one of the additional checks failed.

SEE ALSO    [Toc]    [Back]

     libngatm(3),

AUTHORS    [Toc]    [Back]

     Hartmut Brandt <[email protected]>


FreeBSD 5.2.1		       October 30, 2003 		 FreeBSD 5.2.1