1 files changed, 119 insertions, 0 deletions
diff --git a/inet/getprtent.c b/inet/getprtent.c
new file mode 100644
index 0000000..c10ae33
--- /dev/null
+++ b/inet/getprtent.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1983, 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[] = "@(#)getprotoent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+
+static FILE *protof = NULL;
+static char line[BUFSIZ+1];
+static struct protoent proto;
+static char *proto_aliases[MAXALIASES];
+int _proto_stayopen;
+
+void
+setprotoent(f)
+	int f;
+{
+	if (protof == NULL)
+		protof = fopen(_PATH_PROTOCOLS, "r" );
+	else
+		rewind(protof);
+	_proto_stayopen |= f;
+}
+
+void
+endprotoent()
+{
+	if (protof) {
+		fclose(protof);
+		protof = NULL;
+	}
+	_proto_stayopen = 0;
+}
+
+struct protoent *
+getprotoent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(line, BUFSIZ, protof)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	proto.p_name = p;
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	p = strpbrk(cp, " \t");
+	if (p != NULL)
+		*p++ = '\0';
+	proto.p_proto = atoi(cp);
+	q = proto.p_aliases = proto_aliases;
+	if (p != NULL) {
+		cp = p;
+		while (cp && *cp) {
+			if (*cp == ' ' || *cp == '\t') {
+				cp++;
+				continue;
+			}
+			if (q < &proto_aliases[MAXALIASES - 1])
+				*q++ = cp;
+			cp = strpbrk(cp, " \t");
+			if (cp != NULL)
+				*cp++ = '\0';
+		}
+	}
+	*q = NULL;
+	return (&proto);
+}