diff options
Diffstat (limited to 'lib/libc/net/ns_ntoa.c')
| -rw-r--r-- | lib/libc/net/ns_ntoa.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lib/libc/net/ns_ntoa.c b/lib/libc/net/ns_ntoa.c new file mode 100644 index 0000000..de5f305 --- /dev/null +++ b/lib/libc/net/ns_ntoa.c @@ -0,0 +1,100 @@ +/* + * Copyright (c) 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)ns_ntoa.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/param.h> +#include <netns/ns.h> +#include <stdio.h> + +char * +ns_ntoa(addr) + struct ns_addr addr; +{ + static char obuf[40]; + union { union ns_net net_e; u_long long_e; } net; + u_short port = htons(addr.x_port); + register char *cp; + char *cp2; + register u_char *up = addr.x_host.c_host; + u_char *uplim = up + 6; + static char *spectHex(); + + net.net_e = addr.x_net; + sprintf(obuf, "%lx", (u_long)ntohl(net.long_e)); + cp = spectHex(obuf); + cp2 = cp + 1; + while (*up==0 && up < uplim) up++; + if (up == uplim) { + if (port) { + sprintf(cp, ".0"); + cp += 2; + } + } else { + sprintf(cp, ".%x", *up++); + while (up < uplim) { + while (*cp) cp++; + sprintf(cp, "%02x", *up++); + } + cp = spectHex(cp2); + } + if (port) { + sprintf(cp, ".%x", port); + spectHex(cp + 1); + } + return (obuf); +} + +static char * +spectHex(p0) + char *p0; +{ + int ok = 0; + int nonzero = 0; + register char *p = p0; + for (; *p; p++) switch (*p) { + + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + *p += ('A' - 'a'); + /* fall into . . . */ + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + ok = 1; + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': + nonzero = 1; + } + if (nonzero && !ok) { *p++ = 'H'; *p = 0; } + return (p); +} |
