diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile | 5 | ||||
| -rw-r--r-- | src/ipcalc.c | 69 |
2 files changed, 73 insertions, 1 deletions
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; +} |