Rearrange bootpd

1 files changed, 126 insertions, 0 deletions

diff --git a/libexec/bootpd/lookup.c b/libexec/bootpd/lookup.c
new file mode 100644
index 0000000..2a30a59
--- /dev/null
+++ b/libexec/bootpd/lookup.c
@@ -0,0 +1,126 @@
+/*
+ * lookup.c - Lookup IP address, HW address, netmask
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+
+#ifdef	ETC_ETHERS
+#include <netinet/if_ether.h>
+extern int ether_hostton();
+#endif
+
+#include <netdb.h>
+#include <syslog.h>
+
+#ifndef USE_BFUNCS
+#include <memory.h>
+/* Yes, memcpy is OK here (no overlapped copies). */
+#define bcopy(a,b,c)    memcpy(b,a,c)
+#endif
+
+#include "bootp.h"
+#include "lookup.h"
+#include "report.h"
+
+/*
+ * Lookup an Ethernet address and return it.
+ * Return NULL if addr not found.
+ */
+u_char *
+lookup_hwa(hostname, htype)
+	char *hostname;
+	int htype;
+{
+	switch (htype) {
+
+		/* XXX - How is this done on other systems? -gwr */
+#ifdef	ETC_ETHERS
+	case HTYPE_ETHERNET:
+	case HTYPE_IEEE802:
+		{
+			static struct ether_addr ea;
+			/* This does a lookup in /etc/ethers */
+			if (ether_hostton(hostname, &ea)) {
+				report(LOG_ERR, "no HW addr for host \"%s\"",
+					   hostname);
+				return (u_char *) 0;
+			}
+			return (u_char *) & ea;
+		}
+#endif /* ETC_ETHERS */
+
+	default:
+		report(LOG_ERR, "no lookup for HW addr type %d", htype);
+	}							/* switch */
+
+	/* If the system can't do it, just return an error. */
+	return (u_char *) 0;
+}
+
+
+/*
+ * Lookup an IP address.
+ * Return non-zero on failure.
+ */
+int
+lookup_ipa(hostname, result)
+	char *hostname;
+	u_int32 *result;
+{
+	struct hostent *hp;
+	hp = gethostbyname(hostname);
+	if (!hp)
+		return -1;
+	bcopy(hp->h_addr, result, sizeof(*result));
+	return 0;
+}
+
+
+/*
+ * Lookup a netmask
+ * Return non-zero on failure.
+ *
+ * XXX - This is OK as a default, but to really make this automatic,
+ * we would need to get the subnet mask from the ether interface.
+ * If this is wrong, specify the correct value in the bootptab.
+ */
+int
+lookup_netmask(addr, result)
+	u_int32 addr;				/* both in network order */
+	u_int32 *result;
+{
+	int32 m, a;
+
+	a = ntohl(addr);
+	m = 0;
+
+	if (IN_CLASSA(a))
+		m = IN_CLASSA_NET;
+
+	if (IN_CLASSB(a))
+		m = IN_CLASSB_NET;
+
+	if (IN_CLASSC(a))
+		m = IN_CLASSC_NET;
+
+	if (!m)
+		return -1;
+	*result = htonl(m);
+	return 0;
+}
+
+/*
+ * Local Variables:
+ * tab-width: 4
+ * c-indent-level: 4
+ * c-argdecl-indent: 4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: -4
+ * c-label-offset: -4
+ * c-brace-offset: 0
+ * End:
+ */