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authorrgrimes <rgrimes@FreeBSD.org>1994-05-27 05:00:24 +0000
committerrgrimes <rgrimes@FreeBSD.org>1994-05-27 05:00:24 +0000
commitbe22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (patch)
treea18a706dffa5baf86a3b12bbfb4f81caa097f349 /lib/libc/net/linkaddr.c
parent2a27bd86e6002c871e3b5561a5334653bb222a77 (diff)
downloadFreeBSD-src-be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da.zip
FreeBSD-src-be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da.tar.gz
BSD 4.4 Lite Lib Sources
Diffstat (limited to 'lib/libc/net/linkaddr.c')
-rw-r--r--lib/libc/net/linkaddr.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/lib/libc/net/linkaddr.c b/lib/libc/net/linkaddr.c
new file mode 100644
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--- /dev/null
+++ b/lib/libc/net/linkaddr.c
@@ -0,0 +1,158 @@
+/*-
+ * Copyright (c) 1990, 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[] = "@(#)linkaddr.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if_dl.h>
+#include <string.h>
+
+/* States*/
+#define NAMING 0
+#define GOTONE 1
+#define GOTTWO 2
+#define RESET 3
+/* Inputs */
+#define DIGIT (4*0)
+#define END (4*1)
+#define DELIM (4*2)
+#define LETTER (4*3)
+
+void
+link_addr(addr, sdl)
+ register const char *addr;
+ register struct sockaddr_dl *sdl;
+{
+ register char *cp = sdl->sdl_data;
+ char *cplim = sdl->sdl_len + (char *)sdl;
+ register int byte = 0, state = NAMING, new;
+
+ bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1);
+ sdl->sdl_family = AF_LINK;
+ do {
+ state &= ~LETTER;
+ if ((*addr >= '0') && (*addr <= '9')) {
+ new = *addr - '0';
+ } else if ((*addr >= 'a') && (*addr <= 'f')) {
+ new = *addr - 'a' + 10;
+ } else if ((*addr >= 'A') && (*addr <= 'F')) {
+ new = *addr - 'A' + 10;
+ } else if (*addr == 0) {
+ state |= END;
+ } else if (state == NAMING &&
+ (((*addr >= 'A') && (*addr <= 'Z')) ||
+ ((*addr >= 'a') && (*addr <= 'z'))))
+ state |= LETTER;
+ else
+ state |= DELIM;
+ addr++;
+ switch (state /* | INPUT */) {
+ case NAMING | DIGIT:
+ case NAMING | LETTER:
+ *cp++ = addr[-1];
+ continue;
+ case NAMING | DELIM:
+ state = RESET;
+ sdl->sdl_nlen = cp - sdl->sdl_data;
+ continue;
+ case GOTTWO | DIGIT:
+ *cp++ = byte;
+ /* FALLTHROUGH */
+ case RESET | DIGIT:
+ state = GOTONE;
+ byte = new;
+ continue;
+ case GOTONE | DIGIT:
+ state = GOTTWO;
+ byte = new + (byte << 4);
+ continue;
+ default: /* | DELIM */
+ state = RESET;
+ *cp++ = byte;
+ byte = 0;
+ continue;
+ case GOTONE | END:
+ case GOTTWO | END:
+ *cp++ = byte;
+ /* FALLTHROUGH */
+ case RESET | END:
+ break;
+ }
+ break;
+ } while (cp < cplim);
+ sdl->sdl_alen = cp - LLADDR(sdl);
+ new = cp - (char *)sdl;
+ if (new > sizeof(*sdl))
+ sdl->sdl_len = new;
+ return;
+}
+
+static char hexlist[] = "0123456789abcdef";
+
+char *
+link_ntoa(sdl)
+ register const struct sockaddr_dl *sdl;
+{
+ static char obuf[64];
+ register char *out = obuf;
+ register int i;
+ register u_char *in = (u_char *)LLADDR(sdl);
+ u_char *inlim = in + sdl->sdl_alen;
+ int firsttime = 1;
+
+ if (sdl->sdl_nlen) {
+ bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen);
+ out += sdl->sdl_nlen;
+ if (sdl->sdl_alen)
+ *out++ = ':';
+ }
+ while (in < inlim) {
+ if (firsttime)
+ firsttime = 0;
+ else
+ *out++ = '.';
+ i = *in++;
+ if (i > 0xf) {
+ out[1] = hexlist[i & 0xf];
+ i >>= 4;
+ out[0] = hexlist[i];
+ out += 2;
+ } else
+ *out++ = hexlist[i];
+ }
+ *out = 0;
+ return (obuf);
+}
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