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Diffstat (limited to 'c/src/lib/libnetworking/libc/inet_neta.c')
-rw-r--r--c/src/lib/libnetworking/libc/inet_neta.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/c/src/lib/libnetworking/libc/inet_neta.c b/c/src/lib/libnetworking/libc/inet_neta.c
new file mode 100644
index 0000000000..59b156f7f6
--- /dev/null
+++ b/c/src/lib/libnetworking/libc/inet_neta.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char orig_rcsid[] = "From Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp";
+static const char rcsid[] = "$Id$";
+#endif
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef SPRINTF_CHAR
+# define SPRINTF(x) strlen(sprintf/**/x)
+#else
+# define SPRINTF(x) ((size_t)sprintf x)
+#endif
+
+/*
+ * char *
+ * inet_neta(src, dst, size)
+ * format a u_long network number into presentation format.
+ * return:
+ * pointer to dst, or NULL if an error occurred (check errno).
+ * note:
+ * format of ``src'' is as for inet_network().
+ * author:
+ * Paul Vixie (ISC), July 1996
+ */
+char *
+inet_neta(src, dst, size)
+ u_long src;
+ char *dst;
+ size_t size;
+{
+ char *odst = dst;
+ char *tp;
+
+ while (src & 0xffffffff) {
+ u_char b = (src & 0xff000000) >> 24;
+
+ src <<= 8;
+ if (b) {
+ if (size < sizeof "255.")
+ goto emsgsize;
+ tp = dst;
+ dst += SPRINTF((dst, "%u", b));
+ if (src != 0L) {
+ *dst++ = '.';
+ *dst = '\0';
+ }
+ size -= (size_t)(dst - tp);
+ }
+ }
+ if (dst == odst) {
+ if (size < sizeof "0.0.0.0")
+ goto emsgsize;
+ strcpy(dst, "0.0.0.0");
+ }
+ return (odst);
+
+ emsgsize:
+ errno = EMSGSIZE;
+ return (NULL);
+}