initial check-in, version 0.5.0

src/network/proto.c

@@ -0,0 +1,58 @@
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+
+/* do we really need all these?? */
+
+static int idx;
+static const unsigned char protos[][6] = {
+	"\000ip",
+	"\001icmp",
+	"\002igmp",
+	"\003ggp",
+	"\006tcp",
+	"\014pup",
+	"\021udp",
+	"\026idp",
+	"\377raw"
+	"\0\0"
+};
+
+void endprotoent(void)
+{
+	idx = 0;
+}
+
+void setprotoent(int stayopen)
+{
+	idx = 0;
+}
+
+struct protoent *getprotoent(void)
+{
+	static struct protoent p;
+	static const char *aliases;
+	if (!protos[idx][1]) return NULL;
+	p.p_proto = protos[idx][0];
+	p.p_name = (char *)protos[idx++]+1;
+	p.p_aliases = (char **)&aliases;
+	return &p;
+}
+
+struct protoent *getprotobyname(const char *name)
+{
+	struct protoent *p;
+	endprotoent();
+	do p = getprotoent();
+	while (p && strcmp(name, p->p_name));
+	return p;
+}
+
+struct protoent *getprotobynumber(int num)
+{
+	struct protoent *p;
+	endprotoent();
+	do p = getprotoent();
+	while (p && p->p_proto != num);
+	return p;
+}