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29 * $ANA: addr2ascii.c,v 1.1 1996/06/13 18:41:46 wollman Exp $
32 #include <sys/types.h>
33 #include <sys/socket.h>
38 #include <net/if_dl.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
43 * Convert a network address from binary to printable numeric format.
44 * This API is copied from INRIA's IPv6 implementation, but it is a
45 * bit bogus in two ways:
47 * 1) There is no value in passing both an address family and
48 * an address length; either one should imply the other,
49 * or we should be passing sockaddrs instead.
50 * 2) There should by contrast be /added/ a length for the buffer
51 * that we pass in, so that programmers are spared the need to
52 * manually calculate (read: ``guess'') the maximum length.
54 * Flash: the API is also the same in the NRL implementation, and seems to
55 * be some sort of standard, so we appear to be stuck with both the bad
56 * naming and the poor choice of arguments.
59 addr2ascii(af, addrp, len, buf)
62 int len; /* should be size_t XXX */
63 char *buf; /* XXX should pass length of buffer */
65 static char staticbuf[64]; /* 64 for AF_LINK > 16 for AF_INET */
72 if (len != sizeof(struct in_addr)) {
76 strcpy(buf, inet_ntoa(*(const struct in_addr *)addrp));
80 if (len != sizeof(struct sockaddr_dl)) {
84 strcpy(buf, link_ntoa((const struct sockaddr_dl *)addrp));
88 errno = EPROTONOSUPPORT;