X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fipcalc.c;h=18abc12eb405a07d8ae6aae342cab8d62a99d5fb;hb=d7171c114028815df4e92f9c26875f1d60c6af2a;hp=0ee9646c2476ceb22421f87c83d23e23dd6c7e8f;hpb=c61852a02bd2d61682235ba3185173f527313827;p=oweals%2Fbusybox.git

diff --git a/networking/ipcalc.c b/networking/ipcalc.c
index 0ee9646c2..18abc12eb 100644
--- a/networking/ipcalc.c
+++ b/networking/ipcalc.c
@@ -12,12 +12,11 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include "busybox.h"
-#include <ctype.h>
-#include <getopt.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
 
+#include "libbb.h"
+
 #define CLASS_A_NETMASK	ntohl(0xFF000000)
 #define CLASS_B_NETMASK	ntohl(0xFFFF0000)
 #define CLASS_C_NETMASK	ntohl(0xFFFFFF00)
@@ -36,14 +35,14 @@ static unsigned long get_netmask(unsigned long ipaddr)
 		return 0;
 }
 
-#ifdef CONFIG_FEATURE_IPCALC_FANCY
+#if ENABLE_FEATURE_IPCALC_FANCY
 static int get_prefix(unsigned long netmask)
 {
 	unsigned long msk = 0x80000000;
 	int ret = 0;
 
 	netmask = htonl(netmask);
-	while(msk) {
+	while (msk) {
 		if (netmask & msk)
 			ret++;
 		msk >>= 1;
@@ -63,19 +62,19 @@ int get_prefix(unsigned long netmask);
 #define SILENT    0x20
 
 #if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
-	static const struct option long_options[] = {
-		{ "netmask",     no_argument, NULL, 'm' },
-		{ "broadcast",   no_argument, NULL, 'b' },
-		{ "network",     no_argument, NULL, 'n' },
+	static const char ipcalc_longopts[] ALIGN1 =
+		"netmask\0"   No_argument "m"
+		"broadcast\0" No_argument "b"
+		"network\0"   No_argument "n"
 # if ENABLE_FEATURE_IPCALC_FANCY
-		{ "prefix",      no_argument, NULL, 'p' },
-		{ "hostname",	 no_argument, NULL, 'h' },
-		{ "silent",      no_argument, NULL, 's' },
+		"prefix\0"    No_argument "p"
+		"hostname\0"  No_argument "h"
+		"silent\0"    No_argument "s"
 # endif
-		{ NULL, 0, NULL, 0 }
-	};
+		;
 #endif
 
+int ipcalc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ipcalc_main(int argc, char **argv)
 {
 	unsigned opt;
@@ -85,9 +84,9 @@ int ipcalc_main(int argc, char **argv)
 	char *ipstr;
 
 #if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
-	applet_long_options = long_options;
+	applet_long_options = ipcalc_longopts;
 #endif
-	opt = getopt32(argc, argv, "mbn" USE_FEATURE_IPCALC_FANCY("phs"));
+	opt = getopt32(argv, "mbn" IF_FEATURE_IPCALC_FANCY("phs"));
 	argc -= optind;
 	argv += optind;
 	if (opt & (BROADCAST | NETWORK | NETPREFIX)) {
@@ -176,15 +175,12 @@ int ipcalc_main(int argc, char **argv)
 
 		if (opt & HOSTNAME) {
 			struct hostent *hostinfo;
-			int x;
 
 			hostinfo = gethostbyaddr((char *) &ipaddr, sizeof(ipaddr), AF_INET);
 			if (!hostinfo) {
-				bb_herror_msg_and_die("cannot find hostname for %s", argv[0]);
-			}
-			for (x = 0; hostinfo->h_name[x]; x++) {
-				hostinfo->h_name[x] = tolower(hostinfo->h_name[x]);
+				bb_herror_msg_and_die("can't find hostname for %s", argv[0]);
 			}
+			str_tolower(hostinfo->h_name);
 
 			printf("HOSTNAME=%s\n", hostinfo->h_name);
 		}