emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ipcalc applet by Stephan Linz and Jordan Crouse

Browse Source
This commit is contained in:
Glenn L McGrath 2002-11-10 23:42:27 +00:00
parent 912d8f4cbc
commit c11986d89e
6 changed files with 211 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
AUTHORS
View File

@ -8,6 +8,9 @@ incorect, _please_ let me know.
-----------
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.
@ -28,6 +31,9 @@ Dave Cinege <dcinege@psychosis.com>
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
@ -48,6 +54,9 @@ Daniel Jacobowitz <dan@debian.org>
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
@ -89,7 +98,3 @@ Charles P. Wright <cpwright@villagenet.com>
Enrique Zanardi <ezanardi@ull.es>
tarcat (since removed), loadkmap, various fixes, Debian maintenance
Emanuele Aina <emanuele.aina@tiscali.it>
run-parts

3
include/applets.h
View File

@ -254,6 +254,9 @@
#ifdef CONFIG_IP
APPLET(ip, ip_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif
#ifdef CONFIG_IPCALC
APPLET(ipcalc, ipcalc_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif
#ifdef CONFIG_KILL
APPLET(kill, kill_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif

30
include/usage.h
View File

@ -982,6 +982,36 @@
#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 \

1
networking/Makefile.in
View File

@ -27,6 +27,7 @@ NETWORKING-$(CONFIG_HOSTNAME) += hostname.o
NETWORKING-$(CONFIG_IFCONFIG) += ifconfig.o
NETWORKING-$(CONFIG_IFUPDOWN) += ifupdown.o
NETWORKING-$(CONFIG_IP) += ip.o
NETWORKING-$(CONFIG_IPCALC) += ipcalc.o
NETWORKING-$(CONFIG_NC) += nc.o
NETWORKING-$(CONFIG_NETSTAT) += netstat.o
NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o

4
networking/config.in
View File

@ -30,6 +30,10 @@ if [ "$CONFIG_IP" = "y" ]; then
bool ' route' CONFIG_FEATURE_IP_ROUTE
bool ' tunnel' CONFIG_FEATURE_IP_TUNNEL
fi
bool 'ipcalc' CONFIG_IPCALC
if [ "$CONFIG_IPCALC" = "y" ]; then
bool ' Fancy IPCALC, more options, adds 300 bytes' CONFIG_FEATURE_IPCALC_FANCY
fi
bool 'nc' CONFIG_NC
bool 'netstat' CONFIG_NETSTAT
bool 'nslookup' CONFIG_NSLOOKUP

164
networking/ipcalc.c Normal file
View File

@ -0,0 +1,164 @@
/* 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:
*/