home *** CD-ROM | disk | FTP | other *** search
-
- NS(3) UNIX Programmer's Manual NS(3)
-
- NNAAMMEE
- nnss__aaddddrr, nnss__nnttooaa - Xerox NS(tm) address conversion routines
-
- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<ssyyss//ttyyppeess..hh>>
- ##iinncclluuddee <<nneettnnss//nnss..hh>>
-
- _s_t_r_u_c_t _n_s___a_d_d_r
- nnss__aaddddrr(_c_h_a_r _*_c_p)
-
- _c_h_a_r _*
- nnss__nnttooaa(_s_t_r_u_c_t _n_s___a_d_d_r _n_s)
-
- DDEESSCCRRIIPPTTIIOONN
- The routine nnss__aaddddrr() interprets character strings representing XNS ad-
- dresses, returning binary information suitable for use in system calls.
- The routine nnss__nnttooaa() takes XNS addresses and returns ASCII strings rep-
- resenting the address in a notation in common use in the Xerox Develop-
- ment Environment:
-
- <network number>.<host number>.<port number>
-
- Trailing zero fields are suppressed, and each number is printed in hex-
- adecimal, in a format suitable for input to nnss__aaddddrr(). Any fields lack-
- ing super-decimal digits will have a trailing `H' appended.
-
- Unfortunately, no universal standard exists for representing XNS address-
- es. An effort has been made to insure that nnss__aaddddrr() be compatible with
- most formats in common use. It will first separate an address into 1 to
- 3 fields using a single delimiter chosen from period `.', colon `:' or
- pound-sign `#'. Each field is then examined for byte separators (colon or
- period). If there are byte separators, each subfield separated is taken
- to be a small hexadecimal number, and the entirety is taken as a network-
- byte-ordered quantity to be zero extended in the high-network-order
- bytes. Next, the field is inspected for hyphens, in which case the field
- is assumed to be a number in decimal notation with hyphens separating the
- millenia. Next, the field is assumed to be a number: It is interpreted
- as hexadecimal if there is a leading `0x' (as in C), a trailing `H' (as
- in Mesa), or there are any super-decimal digits present. It is inter-
- preted as octal is there is a leading `0' and there are no super-octal
- digits. Otherwise, it is converted as a decimal number.
-
- RREETTUURRNN VVAALLUUEESS
- None. (See _B_U_G_S.)
-
- SSEEEE AALLSSOO
- hosts(5), networks(5),
-
- HHIISSTTOORRYY
- The nnss__aaddddrr() and nnss__ttooaa() functions appeared in 4.3BSD.
-
- BBUUGGSS
- The string returned by nnss__nnttooaa() resides in a static memory area. The
- function nnss__aaddddrr() should diagnose improperly formed input, and there
- should be an unambiguous way to recognize this.
-
- 4.3 Berkeley Distribution June 4, 1993 1
-