* 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>
-#define IPCALC_MSG(CMD,ALTCMD) if (mode & SILENT) {ALTCMD;} else {CMD;}
+#include "libbb.h"
#define CLASS_A_NETMASK ntohl(0xFF000000)
#define CLASS_B_NETMASK ntohl(0xFFFF0000)
int ret = 0;
netmask = htonl(netmask);
- while(msk) {
+ while (msk) {
if (netmask & msk)
ret++;
msk >>= 1;
int get_prefix(unsigned long netmask);
#endif
+
#define NETMASK 0x01
#define BROADCAST 0x02
#define NETWORK 0x04
#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'},
-#ifdef CONFIG_FEATURE_IPCALC_FANCY
- {"prefix", no_argument, NULL, 'p'},
- {"hostname", no_argument, NULL, 'h'},
- {"silent", no_argument, NULL, 's'},
-#endif
- {NULL, 0, NULL, 0}
- };
-#else
-#define long_options 0
+ static const char ipcalc_longopts[] =
+ "netmask\0" No_argument "m"
+ "broadcast\0" No_argument "b"
+ "network\0" No_argument "n"
+# if ENABLE_FEATURE_IPCALC_FANCY
+ "prefix\0" No_argument "p"
+ "hostname\0" No_argument "h"
+ "silent\0" No_argument "s"
+# endif
+ ;
#endif
-
-
+int ipcalc_main(int argc, char **argv);
int ipcalc_main(int argc, char **argv)
{
- unsigned long mode;
+ unsigned opt;
int have_netmask = 0;
in_addr_t netmask, broadcast, network, ipaddr;
struct in_addr a;
char *ipstr;
- if (ENABLE_FEATURE_IPCALC_LONG_OPTIONS)
- applet_long_options = long_options;
-
- mode = getopt32(argc, argv, "mbn" USE_FEATURE_IPCALC_FANCY("phs"));
-
+#if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
+ applet_long_options = ipcalc_longopts;
+#endif
+ opt = getopt32(argc, argv, "mbn" USE_FEATURE_IPCALC_FANCY("phs"));
argc -= optind;
argv += optind;
- if (mode & (BROADCAST | NETWORK | NETPREFIX)) {
+ if (opt & (BROADCAST | NETWORK | NETPREFIX)) {
if (argc > 2 || argc <= 0)
bb_show_usage();
} else {
if (argc != 1)
bb_show_usage();
}
+ if (opt & SILENT)
+ logmode = LOGMODE_NONE; /* Suppress error_msg() output */
ipstr = argv[0];
if (ENABLE_FEATURE_IPCALC_FANCY) {
prefixstr = ipstr;
- while(*prefixstr) {
+ while (*prefixstr) {
if (*prefixstr == '/') {
*prefixstr = (char)0;
prefixstr++;
if (*prefixstr) {
- unsigned int msk;
-
- if (safe_strtoul(prefixstr, &netprefix) || netprefix > 32) {
- IPCALC_MSG(bb_error_msg_and_die("bad IP prefix: %s", prefixstr),
- exit(EXIT_FAILURE));
- }
+ unsigned msk;
+ netprefix = xatoul_range(prefixstr, 0, 32);
netmask = 0;
msk = 0x80000000;
while (netprefix > 0) {
ipaddr = inet_aton(ipstr, &a);
if (ipaddr == 0) {
- IPCALC_MSG(bb_error_msg_and_die("bad IP address: %s", argv[0]),
- exit(EXIT_FAILURE));
+ bb_error_msg_and_die("bad IP address: %s", argv[0]);
}
ipaddr = a.s_addr;
if (argc == 2) {
if (ENABLE_FEATURE_IPCALC_FANCY && have_netmask) {
- IPCALC_MSG(bb_error_msg_and_die("Use prefix or netmask, not both"),
- exit(EXIT_FAILURE));
+ bb_error_msg_and_die("use prefix or netmask, not both");
}
netmask = inet_aton(argv[1], &a);
if (netmask == 0) {
- IPCALC_MSG(bb_error_msg_and_die("bad netmask: %s", argv[1]),
- exit(EXIT_FAILURE));
+ bb_error_msg_and_die("bad netmask: %s", argv[1]);
}
netmask = a.s_addr;
} else {
netmask = get_netmask(ipaddr);
}
- if (mode & NETMASK) {
+ if (opt & NETMASK) {
printf("NETMASK=%s\n", inet_ntoa((*(struct in_addr *) &netmask)));
}
- if (mode & BROADCAST) {
+ if (opt & BROADCAST) {
broadcast = (ipaddr & netmask) | ~netmask;
printf("BROADCAST=%s\n", inet_ntoa((*(struct in_addr *) &broadcast)));
}
- if (mode & NETWORK) {
+ if (opt & NETWORK) {
network = ipaddr & netmask;
printf("NETWORK=%s\n", inet_ntoa((*(struct in_addr *) &network)));
}
if (ENABLE_FEATURE_IPCALC_FANCY) {
- if (mode & NETPREFIX) {
+ if (opt & NETPREFIX) {
printf("PREFIX=%i\n", get_prefix(netmask));
}
- if (mode & HOSTNAME) {
+ if (opt & HOSTNAME) {
struct hostent *hostinfo;
int x;
hostinfo = gethostbyaddr((char *) &ipaddr, sizeof(ipaddr), AF_INET);
if (!hostinfo) {
- IPCALC_MSG(bb_herror_msg_and_die(
- "cannot find hostname for %s", argv[0]),);
- exit(EXIT_FAILURE);
+ 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]);