-----------
+Emanuele Aina <emanuele.aina@tiscali.it>
+ run-parts
+
Erik Andersen <andersen@codepoet.org>, <andersee@debian.org>
Tons of new stuff, major rewrite of most of the
core apps, tons of new apps as noted in header files.
more(v2), makedevs, dutmp, modularization, auto links file,
various fixes, Linux Router Project maintenance
+Jordan Crouse <jordan@cosmicpenguin.net>
+ ipcalc
+
Magnus Damm <damm@opensource.se>
tftp client
insmod powerpc support
Matt Kraai <kraai@alumni.cmu.edu>
documentation, bugfixes, test suite
+Stephan Linz <linz@li-pro.net>
+ ipcalc, Red Hat equivalence
+
John Lombardo <john@deltanet.com>
dirname, tr
Enrique Zanardi <ezanardi@ull.es>
tarcat (since removed), loadkmap, various fixes, Debian maintenance
-
-Emanuele Aina <emanuele.aina@tiscali.it>
- run-parts
-
#define ip_full_usage \
"not written yet"
+#ifndef CONFIG_FEATURE_IPCALC_FANCY
+#define ipcalc_trivial_usage \
+ "[--broadcast] [--netmask] [--network] ipaddr <netmask>"
+
+#define ipcalc_full_usage \
+ "Calculate IP network settings from a IP address\n\n" \
+ "Options:\n" \
+ "\t-b\t--broadcast\tDisplay calculated broadcast address.\n" \
+ "\t-n\t--netmask\tDisplay default netmask for IP.\n" \
+ "\t-w\t--network\tDisplay calculated network address."
+#else
+#define ipcalc_trivial_usage \
+ "[OPTION]... ipaddr <netmask>"
+
+#define ipcalc_full_usage \
+ "Calculate IP network settings from a IP address\n\n" \
+ "Options:\n" \
+ "\t-b\t--broadcast\tDisplay calculated broadcast address.\n" \
+ "\t-n\t--netmask\tDisplay default netmask for IP.\n" \
+ "\t-w\t--network\tDisplay calculated network address.\n" \
+ "\t-h\t--hostname\tDisplay first resolved host name.\n" \
+ "\t-s\t--silent\tDon't ever display error messages."
+#endif
+
+#define ipcalc_notes_usage \
+ "ipcalc provides a simple way to calculate IP information for\n" \
+ "a host. The various options specify what information ipcalc\n" \
+ "should display on standard out. Multiple options may be\n" \
+ "specified.\n"
+
#define kill_trivial_usage \
"[-signal] process-id [process-id ...]"
#define kill_full_usage \
--- /dev/null
+/* vi: set sw=4 ts=4 ai: */
+/*
+ * Mini ipcalc implementation for busybox
+ *
+ * By Jordan Crouse <jordan@cosmicpenguin.net>
+ * Stephan Linz <linz@li-pro.net>
+ *
+ * This is a complete reimplentation of the ipcalc program
+ * from Redhat. I didn't look at their source code, but there
+ * is no denying that this is a loving reimplementation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <getopt.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "busybox.h"
+
+#define IPCALC_MSG(CMD,ALTCMD) if (mode & SILENT) {ALTCMD;} else {CMD;}
+
+static unsigned long get_netmask(unsigned long ipaddr)
+{
+ if (ipaddr & 0xC0) {
+ return 0x00FFFFFF; /* Class C */
+ }
+ if (ipaddr & 0x10) {
+ return 0x0000FFFF; /* Class B */
+ }
+ return 0x000000FF; /* Class A */
+}
+
+#define NETMASK 0x01
+#define BROADCAST 0x02
+#define NETWORK 0x04
+#define HOSTNAME 0x08
+#define SILENT 0x80
+
+int ipcalc_main(int argc, char **argv)
+{
+ unsigned char mode = 0;
+
+ unsigned long netmask = 0;
+ unsigned long broadcast = 0;
+ unsigned long network = 0;
+ unsigned long ipaddr = 0;
+
+ int opt = 0;
+
+ struct option long_options[] = {
+ {"netmask", no_argument, NULL, 'n'},
+ {"broadcast", no_argument, NULL, 'b'},
+ {"network", no_argument, NULL, 'w'},
+#ifdef CONFIG_FEATURE_IPCALC_FANCY
+ {"hostname", no_argument, NULL, 'h'},
+ {"silent", no_argument, NULL, 's'},
+#endif
+ {NULL, 0, NULL, 0}
+ };
+
+
+ while ((opt = getopt_long(argc, argv,
+#ifdef CONFIG_FEATURE_IPCALC_FANCY
+ "nbwhs",
+#else
+ "nbw",
+#endif
+ long_options, NULL)) != EOF) {
+ if (opt == 'n')
+ mode |= NETMASK;
+ else if (opt == 'b')
+ mode |= BROADCAST;
+ else if (opt == 'w')
+ mode |= NETWORK;
+#ifdef CONFIG_FEATURE_IPCALC_FANCY
+ else if (opt == 'h')
+ mode |= HOSTNAME;
+ else if (opt == 's')
+ mode |= SILENT;
+#endif
+ else {
+ show_usage();
+ }
+ }
+
+ if (mode & (BROADCAST | NETWORK)) {
+ if (argc - optind > 2) {
+ show_usage();
+ }
+ } else {
+ if (argc - optind != 1) {
+ show_usage();
+ }
+ }
+
+ ipaddr = inet_addr(argv[optind]);
+
+ if (ipaddr == INADDR_NONE) {
+ IPCALC_MSG(error_msg_and_die("bad IP address: %s\n", argv[optind]),
+ exit(EXIT_FAILURE));
+ }
+
+
+ if (argc - optind == 2) {
+ netmask = inet_addr(argv[optind + 1]);
+ }
+
+ if (ipaddr == INADDR_NONE) {
+ IPCALC_MSG(error_msg_and_die("bad netmask: %s\n", argv[optind + 1]),
+ exit(EXIT_FAILURE));
+ }
+
+ /* JHC - If the netmask wasn't provided then calculate it */
+ if (!netmask) {
+ netmask = get_netmask(ipaddr);
+ }
+
+ if (mode & NETMASK) {
+ printf("NETMASK=%s\n", inet_ntoa((*(struct in_addr *) &netmask)));
+ }
+
+ if (mode & BROADCAST) {
+ broadcast = (ipaddr & netmask) | ~netmask;
+ printf("BROADCAST=%s\n", inet_ntoa((*(struct in_addr *) &broadcast)));
+ }
+
+ if (mode & NETWORK) {
+ network = ipaddr & netmask;
+ printf("NETWORK=%s\n", inet_ntoa((*(struct in_addr *) &network)));
+ }
+#ifdef CONFIG_FEATURE_IPCALC_FANCY
+ if (mode & HOSTNAME) {
+ struct hostent *hostinfo;
+ int x;
+
+ hostinfo = gethostbyaddr((char *) &ipaddr, sizeof(ipaddr), AF_INET);
+ if (!hostinfo) {
+ IPCALC_MSG(error_msg("cannot find hostname for %s", argv[optind]);
+ herror(NULL);
+ putc('\n', stderr);,);
+ exit(EXIT_FAILURE);
+ }
+ for (x = 0; hostinfo->h_name[x]; x++) {
+ hostinfo->h_name[x] = tolower(hostinfo->h_name[x]);
+ }
+
+ printf("HOSTNAME=%s\n", hostinfo->h_name);
+ }
+#endif
+
+ return EXIT_SUCCESS;
+}
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / commitdiff