From 4fa9ee612c2c06f34f1c44265334f86fcbf24cf5 Mon Sep 17 00:00:00 2001
From: Erik Troan <ewt@redhat.com>
Date: Tue, 10 Mar 1998 15:07:31 +0000
Subject: added ipcalc
---
src/Makefile | 5 ++++-
src/ipcalc.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 73 insertions(+), 1 deletion(-)
create mode 100644 src/ipcalc.c
(limited to 'src')
diff --git a/src/Makefile b/src/Makefile
index b3324ef6..e16e7b37 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,6 +1,6 @@
CFLAGS+=-Wall
-PROGS=usernetctl doexec netreport testd usleep
+PROGS=usernetctl doexec netreport testd usleep ipcalc
all: $(PROGS)
@@ -13,6 +13,7 @@ install:
install -o 0 -g 0 -s -m 755 usleep $(ROOT)/bin/usleep
install -o 0 -g 0 -s -m 4755 usernetctl $(ROOT)/usr/sbin/usernetctl
install -o 0 -g 0 -s -m 2755 netreport $(ROOT)/sbin/netreport
+ install -o 0 -g 0 -s -m 2755 ipcalc $(ROOT)/sbin/ipcalc
install -m 644 doexec.1 $(ROOT)/usr/man/man1
install -m 644 netreport.1 $(ROOT)/usr/man/man1
install -m 644 usleep.1 $(ROOT)/usr/man/man1
@@ -24,3 +25,5 @@ install-test:
install -o 0 -g 0 -s -m 755 testd $(ROOT)/usr/sbin/testd
install -o 0 -g 0 -m 755 testdinit $(ROOT)/etc/rc.d/init.d/testd
+ipcalc: ipcalc.o
+ $(CC) $(LDFLAGS) -o $@ $< -lpopt
diff --git a/src/ipcalc.c b/src/ipcalc.c
new file mode 100644
index 00000000..5640d8c3
--- /dev/null
+++ b/src/ipcalc.c
@@ -0,0 +1,69 @@
+#include <popt.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+typedef unsigned int int32;
+
+int main(int argc, char ** argv) {
+ int showBroadcast = 0, showNetwork = 0;
+ int rc;
+ poptContext optCon;
+ char * ipStr, * netmaskStr, * chptr;
+ int32 ip, netmask, network, broadcast;
+ struct poptOption optionsTable[] = {
+ { "broadcast", '\0', 0, &showBroadcast, 0 },
+ { "network", '\0', 0, &showNetwork, 0 },
+ { NULL, '\0', 0, 0, 0 },
+ };
+
+ optCon = poptGetContext("ipcalc", argc, argv, optionsTable,0);
+ poptReadDefaultConfig(optCon, 1);
+
+ if ((rc = poptGetNextOpt(optCon)) < -1) {
+ fprintf(stderr, "ipcalc: bad argument %s: %s\n",
+ poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
+ poptStrerror(rc));
+ return 1;
+ }
+
+ if (!(ipStr = poptGetArg(optCon))) {
+ fprintf(stderr, "ipcalc: ip address expected\n");
+ return 1;
+ }
+
+ if (!(netmaskStr = poptGetArg(optCon))) {
+ fprintf(stderr, "ipcalc: netmask expected\n");
+ return 1;
+ }
+
+ if ((chptr = poptGetArg(optCon))) {
+ fprintf(stderr, "ipcalc: unexpected argument: %s\n", chptr);
+ return 1;
+ }
+
+ poptFreeContext(optCon);
+
+ if (!inet_aton(ipStr, (struct in_addr *) &ip)) {
+ fprintf(stderr, "ipcalc: bad ip address: %s\n", ipStr);
+ return 1;
+ }
+
+ if (!inet_aton(netmaskStr, (struct in_addr *) &netmask)) {
+ fprintf(stderr, "ipcalc: bad netmask: %s\n", netmaskStr);
+ return 1;
+ }
+
+ if (showBroadcast) {
+ broadcast = (ip & netmask) | ~netmask;
+ printf("BROADCAST=%s\n", inet_ntoa(*((struct in_addr *) &broadcast)));
+ }
+
+ if (showNetwork) {
+ network = ip & netmask;
+ printf("NETWORK=%s\n", inet_ntoa(*((struct in_addr *) &network)));
+ }
+
+ return 0;
+}
--
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