Improved port of ifconfig... smaller and with more features.
This commit is contained in:
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9
Config.h
9
Config.h
@ -287,6 +287,15 @@
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// Enable ifconfig status reporting output -- this feature adds 12k.
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// Enable ifconfig status reporting output -- this feature adds 12k.
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//#define BB_FEATURE_IFCONFIG_STATUS
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//#define BB_FEATURE_IFCONFIG_STATUS
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//
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//
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// Enable ifconfig slip-specific options "keepalive" and "outfill"
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//#define BB_FEATURE_IFCONFIG_SLIP
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//
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// Enable ifconfig options "mem_start", "io_addr", and "irq".
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//#define BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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//
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// Enable ifconfig option "hw". Currently works for only with "ether".
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//#define BB_FEATURE_IFCONFIG_HW
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//
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// Enable busybox --install [-s]
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// Enable busybox --install [-s]
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// to create links (or symlinks) for all the commands that are
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// to create links (or symlinks) for all the commands that are
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// compiled into the binary. (needs /proc filesystem)
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// compiled into the binary. (needs /proc filesystem)
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777
ifconfig.c
777
ifconfig.c
@ -15,19 +15,26 @@
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* Foundation; either version 2 of the License, or (at
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* Foundation; either version 2 of the License, or (at
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* your option) any later version.
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* your option) any later version.
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*
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*
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* $Id: ifconfig.c,v 1.4 2001/03/06 00:48:59 andersen Exp $
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* $Id: ifconfig.c,v 1.5 2001/03/08 22:57:00 mjn3 Exp $
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*
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* Majorly hacked up by Larry Doolittle <ldoolitt@recycle.lbl.gov>
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*
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*
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*/
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*/
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#include "busybox.h"
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/*
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#include <sys/types.h>
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* Heavily modified by Manuel Novoa III Mar 6, 2001
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*
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* From initial port to busybox, removed most of the redundancy by
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* converting to a table-driven approach. Added several (optional)
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* args missing from initial port.
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*
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* Still missing: media.
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h> // strcmp and friends
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#include <string.h> // strcmp and friends
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#include <ctype.h> // isdigit and friends
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#include <ctype.h> // isdigit and friends
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#include <stddef.h> /* offsetof */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <netinet/in.h>
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@ -35,397 +42,443 @@
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#include <net/if.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_arp.h>
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#include <linux/if_ether.h>
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#include <linux/if_ether.h>
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#include "busybox.h"
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static int sockfd; /* socket fd we use to manipulate stuff with */
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#ifdef BB_FEATURE_IFCONFIG_SLIP
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#include <linux/if_slip.h>
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#define TESTME 0
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#if TESTME
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#define ioctl test_ioctl
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char *saddr_to_a(struct sockaddr *s)
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{
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if (s->sa_family == ARPHRD_ETHER) {
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static char hw[18];
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sprintf(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
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s->sa_data[0], s->sa_data[1], s->sa_data[2],
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s->sa_data[3], s->sa_data[4], s->sa_data[5]);
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return hw;
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} else if (s->sa_family == AF_INET) {
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struct sockaddr_in *ss = (struct sockaddr_in *) s;
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return inet_ntoa(ss->sin_addr);
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} else {
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return NULL;
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}
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}
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int test_ioctl(int __fd, unsigned long int __request, void *param)
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{
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struct ifreq *i=(struct ifreq *)param;
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printf("ioctl fd=%d, request=%ld\n", __fd, __request);
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switch(__request) {
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case SIOCGIFFLAGS: printf(" SIOCGIFFLAGS\n"); i->ifr_flags = 0; break;
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case SIOCSIFFLAGS: printf(" SIOCSIFFLAGS, %x\n", i->ifr_flags); break;
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case SIOCSIFMETRIC: printf(" SIOCSIFMETRIC, %d\n", i->ifr_metric); break;
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case SIOCSIFMTU: printf(" SIOCSIFMTU, %d\n", i->ifr_mtu); break;
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case SIOCSIFBRDADDR: printf(" SIOCSIFBRDADDR, %s\n", saddr_to_a(&(i->ifr_broadaddr))); break;
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case SIOCSIFDSTADDR: printf(" SIOCSIFDSTADDR, %s\n", saddr_to_a(&(i->ifr_dstaddr ))); break;
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case SIOCSIFNETMASK: printf(" SIOCSIFNETMASK, %s\n", saddr_to_a(&(i->ifr_netmask ))); break;
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case SIOCSIFADDR: printf(" SIOCSIFADDR, %s\n", saddr_to_a(&(i->ifr_addr ))); break;
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case SIOCSIFHWADDR: printf(" SIOCSIFHWADDR, %s\n", saddr_to_a(&(i->ifr_hwaddr ))); break; /* broken */
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default:
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}
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return 0;
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}
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#endif
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#endif
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/* I don't know if this is needed for busybox or not. Anyone? */
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/* print usage and exit */
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#define QUESTIONABLE_ALIAS_CASE
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#define _(x) x
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/* Set a certain interface flag. */
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static int
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set_flag(char *ifname, short flag)
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{
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struct ifreq ifr;
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strcpy(ifr.ifr_name, ifname);
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if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
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perror("SIOCGIFFLAGS");
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return -1;
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}
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strcpy(ifr.ifr_name, ifname);
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ifr.ifr_flags |= flag;
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if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
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perror("SIOCSIFFLAGS");
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return -1;
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}
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return 0;
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}
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/* Clear a certain interface flag. */
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/* Defines for glibc2.0 users. */
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static int
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#ifndef SIOCSIFTXQLEN
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clr_flag(char *ifname, short flag)
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#define SIOCSIFTXQLEN 0x8943
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{
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#define SIOCGIFTXQLEN 0x8942
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struct ifreq ifr;
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#endif
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strcpy(ifr.ifr_name, ifname);
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if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
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perror("SIOCGIFFLAGS");
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return -1;
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}
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strcpy(ifr.ifr_name, ifname);
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ifr.ifr_flags &= ~flag;
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if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
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perror("SIOCSIFFLAGS");
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return -1;
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}
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return 0;
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}
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/* which element in struct ifreq to frob */
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/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
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enum frob {
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#ifndef ifr_qlen
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L_METRIC,
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#define ifr_qlen ifr_ifru.ifru_mtu
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L_MTU,
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#endif
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L_DATA,
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L_BROAD,
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L_DEST,
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L_MASK,
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L_HWAD,
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};
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#ifndef IFF_DYNAMIC
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#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
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#endif
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struct flag_map {
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/*
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char *name;
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* Here are the bit masks for the "flags" member of struct options below.
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enum frob frob;
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* N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
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int flag;
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* CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
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int sflag;
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int action;
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};
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/* action:
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* 2 set
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* 4 clear
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* 6 set/clear
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* 8 clear/set
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* 10 numeric
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* 12 address
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* 14 address/clear
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*/
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*/
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const static struct flag_map flag_table[] = {
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#define N_CLR 0x01
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{"arp", 0, IFF_NOARP, 0, 6},
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#define M_CLR 0x02
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{"trailers", 0, IFF_NOTRAILERS, 0, 6},
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#define N_SET 0x04
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{"promisc", 0, IFF_PROMISC, 0, 8},
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#define M_SET 0x08
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{"multicast", 0, IFF_MULTICAST, 0, 8},
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#define N_ARG 0x10
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{"allmulti", 0, IFF_ALLMULTI, 0, 8},
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#define M_ARG 0x20
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{"up", 0, (IFF_UP | IFF_RUNNING), 0, 2},
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{"down", 0, IFF_UP, 0, 4},
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#define M_MASK (M_CLR | M_SET | M_ARG)
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{"metric", L_METRIC, 0, SIOCSIFMETRIC, 10},
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#define N_MASK (N_CLR | N_SET | N_ARG)
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{"mtu", L_MTU, 0, SIOCSIFMTU, 10},
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#define SET_MASK (N_SET | M_SET)
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#define CLR_MASK (N_CLR | M_CLR)
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#define SET_CLR_MASK (SET_MASK | CLR_MASK)
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#define ARG_MASK (M_ARG | N_ARG)
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/*
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* Here are the bit masks for the "arg_flags" member of struct options below.
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*/
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/*
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* cast type:
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* 00 int
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* 01 char *
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* 02 HOST_COPY in_ether
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* 03 HOST_COPY INET_resolve
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*/
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#define A_CAST_TYPE 0x03
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/*
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* map type:
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* 00 not a map type (mem_start, io_addr, irq)
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* 04 memstart (unsigned long)
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* 08 io_addr (unsigned short)
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* 0C irq (unsigned char)
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*/
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#define A_MAP_TYPE 0x0C
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#define A_ARG_REQ 0x10 /* Set if an arg is required. */
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#define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
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#define A_SET_AFTER 0x40 /* Set a flag at the end. */
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#define A_COLON_CHK 0x80 /* Is this needed? See below. */
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/*
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* These defines are for dealing with the A_CAST_TYPE field.
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*/
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#define A_CAST_CHAR_PTR 0x01
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#define A_CAST_RESOLVE 0x01
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#define A_CAST_HOST_COPY 0x02
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#define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
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#define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
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/*
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* These defines are for dealing with the A_MAP_TYPE field.
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*/
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#define A_MAP_ULONG 0x04 /* memstart */
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#define A_MAP_USHORT 0x08 /* io_addr */
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#define A_MAP_UCHAR 0x0C /* irq */
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/*
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* Define the bit masks signifying which operations to perform for each arg.
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*/
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#define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
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#define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
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#define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
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#define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
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#define ARG_IO_ADDR (A_ARG_REQ | A_MAP_USHORT)
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#define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
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#define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
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#define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
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#define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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#define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
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#define ARG_POINTOPOINT (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
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#define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
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#define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
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#define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK)
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/*
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* Set up the tables. Warning! They must have corresponding order!
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*/
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struct arg1opt {
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const char *name;
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unsigned short selector;
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unsigned short ifr_offset;
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};
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struct options {
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const char *name;
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const unsigned char flags;
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const unsigned char arg_flags;
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const unsigned short selector;
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};
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#define ifreq_offsetof(x) offsetof(struct ifreq, x)
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static const struct arg1opt Arg1Opt[] = {
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{"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)},
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{"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)},
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{"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)},
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{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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{"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
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{"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
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#ifdef BB_FEATURE_IFCONFIG_HW
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{"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
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#endif
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{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
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#ifdef SIOCSKEEPALIVE
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#ifdef SIOCSKEEPALIVE
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{"keepalive", L_DATA, 0, SIOCSKEEPALIVE, 10},
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{"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
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#endif
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#endif
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#ifdef SIOCSOUTFILL
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#ifdef SIOCSOUTFILL
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{"outfill", L_DATA, 0, SIOCSOUTFILL, 10},
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{"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
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#endif
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#endif
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{"broadcast", L_BROAD, IFF_BROADCAST, SIOCSIFBRDADDR, 14},
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#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
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{"dstaddr", L_DEST, 0, SIOCSIFDSTADDR, 12},
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{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)},
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{"netmask", L_MASK, 0, SIOCSIFNETMASK, 12},
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{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)},
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{"pointopoint", L_DEST, IFF_POINTOPOINT, SIOCSIFDSTADDR, 14},
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{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)},
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{"hw", L_HWAD, 0, SIOCSIFHWADDR, 14},
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#endif
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/* Last entry if for unmatched (possibly hostname) arg. */
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{"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
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};
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};
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static const struct options OptArray[] = {
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{"metric", N_ARG, ARG_METRIC, 0},
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{"mtu", N_ARG, ARG_MTU, 0},
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{"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0},
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{"dstaddr", N_ARG, ARG_DSTADDR, 0},
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{"netmask", N_ARG, ARG_NETMASK, 0},
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{"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST},
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#ifdef BB_FEATURE_IFCONFIG_HW
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{"hw", N_ARG, ARG_HW, 0},
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#endif
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{"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
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#ifdef SIOCSKEEPALIVE
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{"keepalive", N_ARG, ARG_KEEPALIVE, 0},
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#endif
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#ifdef SIOCSOUTFILL
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{"outfill", N_ARG, ARG_OUTFILL, 0},
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#endif
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#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
||||||
|
{"mem_start", N_ARG, ARG_MEM_START, 0},
|
||||||
|
{"io_addr", N_ARG, ARG_IO_ADDR, 0},
|
||||||
|
{"irq", N_ARG, ARG_IRQ, 0},
|
||||||
|
#endif
|
||||||
|
{"arp", N_CLR | M_SET, 0, IFF_NOARP},
|
||||||
|
{"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS},
|
||||||
|
{"promisc", N_SET | M_CLR, 0, IFF_PROMISC},
|
||||||
|
{"multicast", N_SET | M_CLR, 0, IFF_MULTICAST},
|
||||||
|
{"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI},
|
||||||
|
{"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC},
|
||||||
|
{"up", N_SET , 0, (IFF_UP | IFF_RUNNING)},
|
||||||
|
{"down", N_CLR , 0, IFF_UP},
|
||||||
|
{ NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)}
|
||||||
|
};
|
||||||
|
|
||||||
/* resolve XXX.YYY.ZZZ.QQQ -> binary */
|
/*
|
||||||
|
* A couple of prototypes.
|
||||||
|
*/
|
||||||
|
|
||||||
static int
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
INET_resolve(char *name, struct sockaddr_in *sin)
|
static int in_ether(char *bufp, struct sockaddr *sap);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
||||||
|
extern int display_interfaces(void);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Our main function.
|
||||||
|
*/
|
||||||
|
|
||||||
|
int ifconfig_main(int argc, char **argv)
|
||||||
{
|
{
|
||||||
sin->sin_family = AF_INET;
|
struct ifreq ifr;
|
||||||
sin->sin_port = 0;
|
struct sockaddr_in sai;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
struct sockaddr sa;
|
||||||
|
#endif
|
||||||
|
const struct arg1opt *a1op;
|
||||||
|
const struct options *op;
|
||||||
|
int sockfd; /* socket fd we use to manipulate stuff with */
|
||||||
|
int goterr;
|
||||||
|
int selector;
|
||||||
|
char *p;
|
||||||
|
char host[128];
|
||||||
|
unsigned char mask;
|
||||||
|
unsigned char did_flags;
|
||||||
|
|
||||||
/* Default is special, meaning 0.0.0.0. */
|
goterr = 0;
|
||||||
if (strcmp(name, "default")==0) {
|
did_flags = 0;
|
||||||
sin->sin_addr.s_addr = INADDR_ANY;
|
|
||||||
return 1;
|
if(argc < 2) {
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
||||||
|
return(display_interfaces());
|
||||||
|
#else
|
||||||
|
show_usage();
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
/* Look to see if it's a dotted quad. */
|
|
||||||
if (inet_aton(name, &sin->sin_addr)) {
|
/* Create a channel to the NET kernel. */
|
||||||
return 0;
|
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
|
||||||
|
perror("socket");
|
||||||
|
exit(1);
|
||||||
}
|
}
|
||||||
/* guess not.. */
|
|
||||||
errno = EINVAL;
|
/* skip argv[0] */
|
||||||
return -1;
|
argc--;
|
||||||
|
argv++;
|
||||||
|
|
||||||
|
/* get interface name */
|
||||||
|
safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
|
||||||
|
|
||||||
|
/* Process the remaining arguments. */
|
||||||
|
while (*++argv != (char *) NULL) {
|
||||||
|
p = *argv;
|
||||||
|
mask = N_MASK;
|
||||||
|
if (*p == '-') { /* If the arg starts with '-'... */
|
||||||
|
++p; /* advance past it and */
|
||||||
|
mask = M_MASK; /* set the appropriate mask. */
|
||||||
|
}
|
||||||
|
for (op = OptArray ; op->name ; op++) { /* Find table entry. */
|
||||||
|
if (!strcmp(p,op->name)) { /* If name matches... */
|
||||||
|
if ((mask &= op->flags)) { /* set the mask and go. */
|
||||||
|
goto FOUND_ARG;;
|
||||||
|
}
|
||||||
|
/* If we get here, there was a valid arg with an */
|
||||||
|
/* invalid '-' prefix. */
|
||||||
|
++goterr;
|
||||||
|
goto LOOP;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* We fell through, so treat as possible hostname. */
|
||||||
|
a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1;
|
||||||
|
mask = op->arg_flags;
|
||||||
|
goto HOSTNAME;
|
||||||
|
|
||||||
|
FOUND_ARG:
|
||||||
|
if (mask & ARG_MASK) {
|
||||||
|
mask = op->arg_flags;
|
||||||
|
a1op = Arg1Opt + (op - OptArray);
|
||||||
|
if (mask & A_NETMASK & did_flags) {
|
||||||
|
show_usage();
|
||||||
|
}
|
||||||
|
if (*++argv == NULL) {
|
||||||
|
if (mask & A_ARG_REQ) {
|
||||||
|
show_usage();
|
||||||
|
} else {
|
||||||
|
--argv;
|
||||||
|
mask &= A_SET_AFTER; /* just for broadcast */
|
||||||
|
}
|
||||||
|
} else { /* got an arg so process it */
|
||||||
|
HOSTNAME:
|
||||||
|
did_flags |= (mask & A_NETMASK);
|
||||||
|
if (mask & A_CAST_HOST_COPY) {
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
if (mask & A_CAST_RESOLVE) {
|
||||||
|
#endif
|
||||||
|
safe_strncpy(host, *argv, (sizeof host));
|
||||||
|
sai.sin_family = AF_INET;
|
||||||
|
sai.sin_port = 0;
|
||||||
|
if (!strcmp(host, "default")) {
|
||||||
|
/* Default is special, meaning 0.0.0.0. */
|
||||||
|
sai.sin_addr.s_addr = INADDR_ANY;
|
||||||
|
} else if (inet_aton(host, &sai.sin_addr) == 0) {
|
||||||
|
/* It's not a dotted quad. */
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
p = (char *) &sai;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
} else { /* A_CAST_HOST_COPY_IN_ETHER */
|
||||||
|
/* This is the "hw" arg case. */
|
||||||
|
if (strcmp("ether", *argv) || (*++argv == NULL)) {
|
||||||
|
show_usage();
|
||||||
|
}
|
||||||
|
safe_strncpy(host, *argv, (sizeof host));
|
||||||
|
if (in_ether(host, &sa)) {
|
||||||
|
fprintf(stderr, "invalid hw-addr %s\n", host);
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
p = (char *) &sa;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
memcpy((((char *)(&ifr)) + a1op->ifr_offset),
|
||||||
|
p, sizeof(struct sockaddr));
|
||||||
|
} else {
|
||||||
|
unsigned int i = strtoul(*argv,NULL,0);
|
||||||
|
p = ((char *)(&ifr)) + a1op->ifr_offset;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
||||||
|
if (mask & A_MAP_TYPE) {
|
||||||
|
if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) {
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) {
|
||||||
|
*((unsigned char *) p) = i;
|
||||||
|
} else if (mask & A_MAP_USHORT) {
|
||||||
|
*((unsigned short *) p) = i;
|
||||||
|
} else {
|
||||||
|
*((unsigned long *) p) = i;
|
||||||
|
}
|
||||||
|
} else
|
||||||
|
#endif
|
||||||
|
if (mask & A_CAST_CHAR_PTR) {
|
||||||
|
*((caddr_t *) p) = (caddr_t) i;
|
||||||
|
} else { /* A_CAST_INT */
|
||||||
|
*((int *) p) = i;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
|
||||||
|
perror(a1op->name);
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef QUESTIONABLE_ALIAS_CASE
|
||||||
|
if (mask & A_COLON_CHK) {
|
||||||
|
/*
|
||||||
|
* Don't do the set_flag() if the address is an alias with
|
||||||
|
* a - at the end, since it's deleted already! - Roman
|
||||||
|
*
|
||||||
|
* Should really use regex.h here, not sure though how well
|
||||||
|
* it'll go with the cross-platform support etc.
|
||||||
|
*/
|
||||||
|
char *ptr;
|
||||||
|
short int found_colon = 0;
|
||||||
|
for (ptr = ifr.ifr_name; *ptr; ptr++ ) {
|
||||||
|
if (*ptr == ':') {
|
||||||
|
found_colon++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (found_colon && *(ptr - 1) == '-') {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
if (!(mask & A_SET_AFTER)) {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
mask = N_SET;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
|
||||||
|
perror("SIOCGIFFLAGS");
|
||||||
|
++goterr;
|
||||||
|
} else {
|
||||||
|
selector = op->selector;
|
||||||
|
if (mask & SET_MASK) {
|
||||||
|
ifr.ifr_flags |= selector;
|
||||||
|
} else {
|
||||||
|
ifr.ifr_flags &= ~selector;
|
||||||
|
}
|
||||||
|
if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
|
||||||
|
perror("SIOCSIFFLAGS");
|
||||||
|
++goterr;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
LOOP:
|
||||||
|
} /* end of while-loop */
|
||||||
|
|
||||||
|
return goterr;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
/* Input an Ethernet address and convert to binary. */
|
/* Input an Ethernet address and convert to binary. */
|
||||||
static int
|
static int
|
||||||
in_ether(char *bufp, struct sockaddr *sap)
|
in_ether(char *bufp, struct sockaddr *sap)
|
||||||
{
|
{
|
||||||
unsigned char *ptr;
|
unsigned char *ptr;
|
||||||
char c, *orig;
|
int i, j;
|
||||||
int i;
|
unsigned char val;
|
||||||
unsigned val;
|
unsigned char c;
|
||||||
|
|
||||||
sap->sa_family = ARPHRD_ETHER;
|
sap->sa_family = ARPHRD_ETHER;
|
||||||
ptr = sap->sa_data;
|
ptr = sap->sa_data;
|
||||||
|
|
||||||
i = 0;
|
for (i = 0 ; i < ETH_ALEN ; i++) {
|
||||||
orig = bufp;
|
|
||||||
while ((*bufp != '\0') && (i < ETH_ALEN)) {
|
|
||||||
val = 0;
|
val = 0;
|
||||||
c = *bufp++;
|
|
||||||
if (isdigit(c))
|
/* We might get a semicolon here - not required. */
|
||||||
val = c - '0';
|
if (i && (*bufp == ':')) {
|
||||||
else if (c >= 'a' && c <= 'f')
|
|
||||||
val = c - 'a' + 10;
|
|
||||||
else if (c >= 'A' && c <= 'F')
|
|
||||||
val = c - 'A' + 10;
|
|
||||||
else {
|
|
||||||
#ifdef DEBUG
|
|
||||||
error_msg(
|
|
||||||
_("in_ether(%s): invalid ether address!"),
|
|
||||||
orig);
|
|
||||||
#endif
|
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
val <<= 4;
|
|
||||||
c = *bufp;
|
|
||||||
if (isdigit(c))
|
|
||||||
val |= c - '0';
|
|
||||||
else if (c >= 'a' && c <= 'f')
|
|
||||||
val |= c - 'a' + 10;
|
|
||||||
else if (c >= 'A' && c <= 'F')
|
|
||||||
val |= c - 'A' + 10;
|
|
||||||
else if (c == ':' || c == 0)
|
|
||||||
val >>= 4;
|
|
||||||
else {
|
|
||||||
#ifdef DEBUG
|
|
||||||
error_msg(
|
|
||||||
_("in_ether(%s): invalid ether address!"),
|
|
||||||
orig);
|
|
||||||
#endif
|
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
if (c != 0)
|
|
||||||
bufp++;
|
bufp++;
|
||||||
*ptr++ = (unsigned char) (val & 0377);
|
}
|
||||||
i++;
|
|
||||||
|
for (j=0 ; j<2 ; j++) {
|
||||||
/* optional colon already handled, don't swallow a second */
|
c = *bufp;
|
||||||
|
if (c >= '0' && c <= '9') {
|
||||||
|
c -= '0';
|
||||||
|
} else if (c >= 'a' && c <= 'f') {
|
||||||
|
c -= ('a' + 10);
|
||||||
|
} else if (c >= 'A' && c <= 'F') {
|
||||||
|
c -= ('A' + 10);
|
||||||
|
} else if (j && (c == ':' || c == 0)) {
|
||||||
|
break;
|
||||||
|
} else {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
++bufp;
|
||||||
|
val <<= 4;
|
||||||
|
val += c;
|
||||||
|
}
|
||||||
|
*ptr++ = val;
|
||||||
}
|
}
|
||||||
|
|
||||||
if(i != ETH_ALEN) {
|
return (int) (*bufp); /* Error if we don't end at end of string. */
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
|
||||||
extern int display_interfaces(void);
|
|
||||||
#else
|
|
||||||
int display_interfaces(void)
|
|
||||||
{
|
|
||||||
show_usage();
|
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
int ifconfig_main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
struct ifreq ifr;
|
|
||||||
struct sockaddr_in sa;
|
|
||||||
char **spp, *cmd;
|
|
||||||
int goterr = 0;
|
|
||||||
int r;
|
|
||||||
/* int didnetmask = 0; special case input error detection no longer implemented */
|
|
||||||
char host[128];
|
|
||||||
const struct flag_map *ft;
|
|
||||||
int i, sense;
|
|
||||||
int a, ecode;
|
|
||||||
struct sockaddr *d;
|
|
||||||
|
|
||||||
if(argc < 2) {
|
|
||||||
return(display_interfaces());
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Create a channel to the NET kernel. */
|
|
||||||
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
|
|
||||||
perror_msg_and_die("socket");
|
|
||||||
}
|
|
||||||
|
|
||||||
/* skip argv[0] */
|
|
||||||
|
|
||||||
argc--;
|
|
||||||
argv++;
|
|
||||||
|
|
||||||
spp = argv;
|
|
||||||
|
|
||||||
/* get interface name */
|
|
||||||
|
|
||||||
safe_strncpy(ifr.ifr_name, *spp++, IFNAMSIZ);
|
|
||||||
|
|
||||||
/* Process the remaining arguments. */
|
|
||||||
while (*spp != (char *) NULL) {
|
|
||||||
cmd = *spp;
|
|
||||||
sense=0;
|
|
||||||
if (*cmd=='-') {
|
|
||||||
sense=1;
|
|
||||||
cmd++;
|
|
||||||
}
|
|
||||||
ft = NULL;
|
|
||||||
for (i=0; i<(sizeof(flag_table)/sizeof(struct flag_map)); i++) {
|
|
||||||
if (strcmp(cmd, flag_table[i].name)==0) {
|
|
||||||
ft=flag_table+i;
|
|
||||||
spp++;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (ft) {
|
|
||||||
switch (ft->action+sense) {
|
|
||||||
case 4:
|
|
||||||
case 7:
|
|
||||||
case 8:
|
|
||||||
case 15:
|
|
||||||
goterr |= clr_flag(ifr.ifr_name, ft->flag);
|
|
||||||
break;
|
|
||||||
case 2:
|
|
||||||
case 6:
|
|
||||||
case 9:
|
|
||||||
goterr |= set_flag(ifr.ifr_name, ft->flag);
|
|
||||||
break;
|
|
||||||
case 10:
|
|
||||||
if (*spp == NULL)
|
|
||||||
show_usage();
|
|
||||||
a = atoi(*spp++);
|
|
||||||
switch (ft->frob) {
|
|
||||||
case L_METRIC: ifr.ifr_metric = a; break;
|
|
||||||
case L_MTU: ifr.ifr_mtu = a; break;
|
|
||||||
case L_DATA: ifr.ifr_data = (caddr_t) a; break;
|
|
||||||
default: error_msg_and_die("bugaboo");
|
|
||||||
}
|
|
||||||
|
|
||||||
if (ioctl(sockfd, ft->sflag, &ifr) < 0) {
|
|
||||||
perror(ft->name); /* imperfect */
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case 12:
|
|
||||||
case 14:
|
|
||||||
if (ft->action+sense==10 && *spp == NULL) {
|
|
||||||
show_usage();
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
if (*spp != NULL) {
|
|
||||||
safe_strncpy(host, *spp, (sizeof host));
|
|
||||||
spp++;
|
|
||||||
if (ft->frob == L_HWAD) {
|
|
||||||
ecode = in_ether(host, &ifr.ifr_hwaddr);
|
|
||||||
} else {
|
|
||||||
switch (ft->frob) {
|
|
||||||
case L_BROAD: d = &ifr.ifr_broadaddr; break;
|
|
||||||
case L_DEST: d = &ifr.ifr_dstaddr; break;
|
|
||||||
case L_MASK: d = &ifr.ifr_netmask; break;
|
|
||||||
default: error_msg_and_die("bugaboo");
|
|
||||||
}
|
|
||||||
ecode = INET_resolve(host, (struct sockaddr_in *) d);
|
|
||||||
}
|
|
||||||
if (ecode < 0 || ioctl(sockfd, ft->sflag, &ifr) < 0) {
|
|
||||||
perror(ft->name); /* imperfect */
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (ft->flag != 0) {
|
|
||||||
goterr |= set_flag(ifr.ifr_name, ft->flag);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
show_usage();
|
|
||||||
} /* end of switch */
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If the next argument is a valid hostname, assume OK. */
|
|
||||||
safe_strncpy(host, *spp, (sizeof host));
|
|
||||||
|
|
||||||
if (INET_resolve(host, &sa) < 0) {
|
|
||||||
show_usage();
|
|
||||||
}
|
|
||||||
memcpy((char *) &ifr.ifr_addr,
|
|
||||||
(char *) &sa, sizeof(struct sockaddr));
|
|
||||||
|
|
||||||
r = ioctl(sockfd, SIOCSIFADDR, &ifr);
|
|
||||||
|
|
||||||
if (r < 0) {
|
|
||||||
perror("SIOCSIFADDR");
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Don't do the set_flag() if the address is an alias with a - at the
|
|
||||||
* end, since it's deleted already! - Roman
|
|
||||||
*
|
|
||||||
* Should really use regex.h here, not sure though how well it'll go
|
|
||||||
* with the cross-platform support etc.
|
|
||||||
*/
|
|
||||||
{
|
|
||||||
char *ptr;
|
|
||||||
short int found_colon = 0;
|
|
||||||
for (ptr = ifr.ifr_name; *ptr; ptr++ )
|
|
||||||
if (*ptr == ':') found_colon++;
|
|
||||||
|
|
||||||
if (!(found_colon && *(ptr - 1) == '-'))
|
|
||||||
goterr |= set_flag(ifr.ifr_name, (IFF_UP | IFF_RUNNING));
|
|
||||||
}
|
|
||||||
|
|
||||||
spp++;
|
|
||||||
|
|
||||||
} /* end of while-loop */
|
|
||||||
|
|
||||||
return goterr;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
@ -15,19 +15,26 @@
|
|||||||
* Foundation; either version 2 of the License, or (at
|
* Foundation; either version 2 of the License, or (at
|
||||||
* your option) any later version.
|
* your option) any later version.
|
||||||
*
|
*
|
||||||
* $Id: ifconfig.c,v 1.4 2001/03/06 00:48:59 andersen Exp $
|
* $Id: ifconfig.c,v 1.5 2001/03/08 22:57:00 mjn3 Exp $
|
||||||
*
|
|
||||||
* Majorly hacked up by Larry Doolittle <ldoolitt@recycle.lbl.gov>
|
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include "busybox.h"
|
/*
|
||||||
#include <sys/types.h>
|
* Heavily modified by Manuel Novoa III Mar 6, 2001
|
||||||
|
*
|
||||||
|
* From initial port to busybox, removed most of the redundancy by
|
||||||
|
* converting to a table-driven approach. Added several (optional)
|
||||||
|
* args missing from initial port.
|
||||||
|
*
|
||||||
|
* Still missing: media.
|
||||||
|
*/
|
||||||
|
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
#include <errno.h>
|
|
||||||
#include <string.h> // strcmp and friends
|
#include <string.h> // strcmp and friends
|
||||||
#include <ctype.h> // isdigit and friends
|
#include <ctype.h> // isdigit and friends
|
||||||
|
#include <stddef.h> /* offsetof */
|
||||||
|
#include <sys/types.h>
|
||||||
#include <sys/socket.h>
|
#include <sys/socket.h>
|
||||||
#include <sys/ioctl.h>
|
#include <sys/ioctl.h>
|
||||||
#include <netinet/in.h>
|
#include <netinet/in.h>
|
||||||
@ -35,397 +42,443 @@
|
|||||||
#include <net/if.h>
|
#include <net/if.h>
|
||||||
#include <net/if_arp.h>
|
#include <net/if_arp.h>
|
||||||
#include <linux/if_ether.h>
|
#include <linux/if_ether.h>
|
||||||
|
#include "busybox.h"
|
||||||
|
|
||||||
static int sockfd; /* socket fd we use to manipulate stuff with */
|
#ifdef BB_FEATURE_IFCONFIG_SLIP
|
||||||
|
#include <linux/if_slip.h>
|
||||||
#define TESTME 0
|
|
||||||
#if TESTME
|
|
||||||
#define ioctl test_ioctl
|
|
||||||
char *saddr_to_a(struct sockaddr *s)
|
|
||||||
{
|
|
||||||
if (s->sa_family == ARPHRD_ETHER) {
|
|
||||||
static char hw[18];
|
|
||||||
sprintf(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
|
|
||||||
s->sa_data[0], s->sa_data[1], s->sa_data[2],
|
|
||||||
s->sa_data[3], s->sa_data[4], s->sa_data[5]);
|
|
||||||
return hw;
|
|
||||||
} else if (s->sa_family == AF_INET) {
|
|
||||||
struct sockaddr_in *ss = (struct sockaddr_in *) s;
|
|
||||||
return inet_ntoa(ss->sin_addr);
|
|
||||||
} else {
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
int test_ioctl(int __fd, unsigned long int __request, void *param)
|
|
||||||
{
|
|
||||||
struct ifreq *i=(struct ifreq *)param;
|
|
||||||
printf("ioctl fd=%d, request=%ld\n", __fd, __request);
|
|
||||||
|
|
||||||
switch(__request) {
|
|
||||||
case SIOCGIFFLAGS: printf(" SIOCGIFFLAGS\n"); i->ifr_flags = 0; break;
|
|
||||||
case SIOCSIFFLAGS: printf(" SIOCSIFFLAGS, %x\n", i->ifr_flags); break;
|
|
||||||
case SIOCSIFMETRIC: printf(" SIOCSIFMETRIC, %d\n", i->ifr_metric); break;
|
|
||||||
case SIOCSIFMTU: printf(" SIOCSIFMTU, %d\n", i->ifr_mtu); break;
|
|
||||||
case SIOCSIFBRDADDR: printf(" SIOCSIFBRDADDR, %s\n", saddr_to_a(&(i->ifr_broadaddr))); break;
|
|
||||||
case SIOCSIFDSTADDR: printf(" SIOCSIFDSTADDR, %s\n", saddr_to_a(&(i->ifr_dstaddr ))); break;
|
|
||||||
case SIOCSIFNETMASK: printf(" SIOCSIFNETMASK, %s\n", saddr_to_a(&(i->ifr_netmask ))); break;
|
|
||||||
case SIOCSIFADDR: printf(" SIOCSIFADDR, %s\n", saddr_to_a(&(i->ifr_addr ))); break;
|
|
||||||
case SIOCSIFHWADDR: printf(" SIOCSIFHWADDR, %s\n", saddr_to_a(&(i->ifr_hwaddr ))); break; /* broken */
|
|
||||||
default:
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
/* I don't know if this is needed for busybox or not. Anyone? */
|
||||||
/* print usage and exit */
|
#define QUESTIONABLE_ALIAS_CASE
|
||||||
|
|
||||||
#define _(x) x
|
|
||||||
|
|
||||||
/* Set a certain interface flag. */
|
|
||||||
static int
|
|
||||||
set_flag(char *ifname, short flag)
|
|
||||||
{
|
|
||||||
struct ifreq ifr;
|
|
||||||
|
|
||||||
strcpy(ifr.ifr_name, ifname);
|
|
||||||
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
|
|
||||||
perror("SIOCGIFFLAGS");
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
strcpy(ifr.ifr_name, ifname);
|
|
||||||
ifr.ifr_flags |= flag;
|
|
||||||
if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
|
|
||||||
perror("SIOCSIFFLAGS");
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Clear a certain interface flag. */
|
/* Defines for glibc2.0 users. */
|
||||||
static int
|
#ifndef SIOCSIFTXQLEN
|
||||||
clr_flag(char *ifname, short flag)
|
#define SIOCSIFTXQLEN 0x8943
|
||||||
{
|
#define SIOCGIFTXQLEN 0x8942
|
||||||
struct ifreq ifr;
|
#endif
|
||||||
|
|
||||||
strcpy(ifr.ifr_name, ifname);
|
|
||||||
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
|
|
||||||
perror("SIOCGIFFLAGS");
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
strcpy(ifr.ifr_name, ifname);
|
|
||||||
ifr.ifr_flags &= ~flag;
|
|
||||||
if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
|
|
||||||
perror("SIOCSIFFLAGS");
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* which element in struct ifreq to frob */
|
/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
|
||||||
enum frob {
|
#ifndef ifr_qlen
|
||||||
L_METRIC,
|
#define ifr_qlen ifr_ifru.ifru_mtu
|
||||||
L_MTU,
|
#endif
|
||||||
L_DATA,
|
|
||||||
L_BROAD,
|
|
||||||
L_DEST,
|
|
||||||
L_MASK,
|
|
||||||
L_HWAD,
|
|
||||||
};
|
|
||||||
|
|
||||||
|
#ifndef IFF_DYNAMIC
|
||||||
|
#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
|
||||||
|
#endif
|
||||||
|
|
||||||
struct flag_map {
|
/*
|
||||||
char *name;
|
* Here are the bit masks for the "flags" member of struct options below.
|
||||||
enum frob frob;
|
* N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
|
||||||
int flag;
|
* CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
|
||||||
int sflag;
|
|
||||||
int action;
|
|
||||||
};
|
|
||||||
|
|
||||||
/* action:
|
|
||||||
* 2 set
|
|
||||||
* 4 clear
|
|
||||||
* 6 set/clear
|
|
||||||
* 8 clear/set
|
|
||||||
* 10 numeric
|
|
||||||
* 12 address
|
|
||||||
* 14 address/clear
|
|
||||||
*/
|
*/
|
||||||
const static struct flag_map flag_table[] = {
|
#define N_CLR 0x01
|
||||||
{"arp", 0, IFF_NOARP, 0, 6},
|
#define M_CLR 0x02
|
||||||
{"trailers", 0, IFF_NOTRAILERS, 0, 6},
|
#define N_SET 0x04
|
||||||
{"promisc", 0, IFF_PROMISC, 0, 8},
|
#define M_SET 0x08
|
||||||
{"multicast", 0, IFF_MULTICAST, 0, 8},
|
#define N_ARG 0x10
|
||||||
{"allmulti", 0, IFF_ALLMULTI, 0, 8},
|
#define M_ARG 0x20
|
||||||
{"up", 0, (IFF_UP | IFF_RUNNING), 0, 2},
|
|
||||||
{"down", 0, IFF_UP, 0, 4},
|
#define M_MASK (M_CLR | M_SET | M_ARG)
|
||||||
{"metric", L_METRIC, 0, SIOCSIFMETRIC, 10},
|
#define N_MASK (N_CLR | N_SET | N_ARG)
|
||||||
{"mtu", L_MTU, 0, SIOCSIFMTU, 10},
|
#define SET_MASK (N_SET | M_SET)
|
||||||
|
#define CLR_MASK (N_CLR | M_CLR)
|
||||||
|
#define SET_CLR_MASK (SET_MASK | CLR_MASK)
|
||||||
|
#define ARG_MASK (M_ARG | N_ARG)
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Here are the bit masks for the "arg_flags" member of struct options below.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* cast type:
|
||||||
|
* 00 int
|
||||||
|
* 01 char *
|
||||||
|
* 02 HOST_COPY in_ether
|
||||||
|
* 03 HOST_COPY INET_resolve
|
||||||
|
*/
|
||||||
|
#define A_CAST_TYPE 0x03
|
||||||
|
/*
|
||||||
|
* map type:
|
||||||
|
* 00 not a map type (mem_start, io_addr, irq)
|
||||||
|
* 04 memstart (unsigned long)
|
||||||
|
* 08 io_addr (unsigned short)
|
||||||
|
* 0C irq (unsigned char)
|
||||||
|
*/
|
||||||
|
#define A_MAP_TYPE 0x0C
|
||||||
|
#define A_ARG_REQ 0x10 /* Set if an arg is required. */
|
||||||
|
#define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
|
||||||
|
#define A_SET_AFTER 0x40 /* Set a flag at the end. */
|
||||||
|
#define A_COLON_CHK 0x80 /* Is this needed? See below. */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* These defines are for dealing with the A_CAST_TYPE field.
|
||||||
|
*/
|
||||||
|
#define A_CAST_CHAR_PTR 0x01
|
||||||
|
#define A_CAST_RESOLVE 0x01
|
||||||
|
#define A_CAST_HOST_COPY 0x02
|
||||||
|
#define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
|
||||||
|
#define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
|
||||||
|
|
||||||
|
/*
|
||||||
|
* These defines are for dealing with the A_MAP_TYPE field.
|
||||||
|
*/
|
||||||
|
#define A_MAP_ULONG 0x04 /* memstart */
|
||||||
|
#define A_MAP_USHORT 0x08 /* io_addr */
|
||||||
|
#define A_MAP_UCHAR 0x0C /* irq */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Define the bit masks signifying which operations to perform for each arg.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
|
||||||
|
#define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
|
||||||
|
#define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
|
||||||
|
#define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
|
||||||
|
#define ARG_IO_ADDR (A_ARG_REQ | A_MAP_USHORT)
|
||||||
|
#define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
|
||||||
|
#define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
|
||||||
|
#define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
|
||||||
|
#define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
|
||||||
|
#define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
|
||||||
|
#define ARG_POINTOPOINT (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
|
||||||
|
#define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
|
||||||
|
#define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
|
||||||
|
#define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK)
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Set up the tables. Warning! They must have corresponding order!
|
||||||
|
*/
|
||||||
|
|
||||||
|
struct arg1opt {
|
||||||
|
const char *name;
|
||||||
|
unsigned short selector;
|
||||||
|
unsigned short ifr_offset;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct options {
|
||||||
|
const char *name;
|
||||||
|
const unsigned char flags;
|
||||||
|
const unsigned char arg_flags;
|
||||||
|
const unsigned short selector;
|
||||||
|
};
|
||||||
|
|
||||||
|
#define ifreq_offsetof(x) offsetof(struct ifreq, x)
|
||||||
|
|
||||||
|
static const struct arg1opt Arg1Opt[] = {
|
||||||
|
{"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)},
|
||||||
|
{"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)},
|
||||||
|
{"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)},
|
||||||
|
{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
|
||||||
|
{"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
|
||||||
|
{"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
{"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
|
||||||
|
#endif
|
||||||
|
{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
|
||||||
#ifdef SIOCSKEEPALIVE
|
#ifdef SIOCSKEEPALIVE
|
||||||
{"keepalive", L_DATA, 0, SIOCSKEEPALIVE, 10},
|
{"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
|
||||||
#endif
|
#endif
|
||||||
#ifdef SIOCSOUTFILL
|
#ifdef SIOCSOUTFILL
|
||||||
{"outfill", L_DATA, 0, SIOCSOUTFILL, 10},
|
{"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
|
||||||
#endif
|
#endif
|
||||||
{"broadcast", L_BROAD, IFF_BROADCAST, SIOCSIFBRDADDR, 14},
|
#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
||||||
{"dstaddr", L_DEST, 0, SIOCSIFDSTADDR, 12},
|
{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)},
|
||||||
{"netmask", L_MASK, 0, SIOCSIFNETMASK, 12},
|
{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)},
|
||||||
{"pointopoint", L_DEST, IFF_POINTOPOINT, SIOCSIFDSTADDR, 14},
|
{"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)},
|
||||||
{"hw", L_HWAD, 0, SIOCSIFHWADDR, 14},
|
#endif
|
||||||
|
/* Last entry if for unmatched (possibly hostname) arg. */
|
||||||
|
{"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
|
||||||
};
|
};
|
||||||
|
|
||||||
|
static const struct options OptArray[] = {
|
||||||
|
{"metric", N_ARG, ARG_METRIC, 0},
|
||||||
|
{"mtu", N_ARG, ARG_MTU, 0},
|
||||||
|
{"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0},
|
||||||
|
{"dstaddr", N_ARG, ARG_DSTADDR, 0},
|
||||||
|
{"netmask", N_ARG, ARG_NETMASK, 0},
|
||||||
|
{"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST},
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
{"hw", N_ARG, ARG_HW, 0},
|
||||||
|
#endif
|
||||||
|
{"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
|
||||||
|
#ifdef SIOCSKEEPALIVE
|
||||||
|
{"keepalive", N_ARG, ARG_KEEPALIVE, 0},
|
||||||
|
#endif
|
||||||
|
#ifdef SIOCSOUTFILL
|
||||||
|
{"outfill", N_ARG, ARG_OUTFILL, 0},
|
||||||
|
#endif
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
||||||
|
{"mem_start", N_ARG, ARG_MEM_START, 0},
|
||||||
|
{"io_addr", N_ARG, ARG_IO_ADDR, 0},
|
||||||
|
{"irq", N_ARG, ARG_IRQ, 0},
|
||||||
|
#endif
|
||||||
|
{"arp", N_CLR | M_SET, 0, IFF_NOARP},
|
||||||
|
{"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS},
|
||||||
|
{"promisc", N_SET | M_CLR, 0, IFF_PROMISC},
|
||||||
|
{"multicast", N_SET | M_CLR, 0, IFF_MULTICAST},
|
||||||
|
{"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI},
|
||||||
|
{"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC},
|
||||||
|
{"up", N_SET , 0, (IFF_UP | IFF_RUNNING)},
|
||||||
|
{"down", N_CLR , 0, IFF_UP},
|
||||||
|
{ NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)}
|
||||||
|
};
|
||||||
|
|
||||||
/* resolve XXX.YYY.ZZZ.QQQ -> binary */
|
/*
|
||||||
|
* A couple of prototypes.
|
||||||
|
*/
|
||||||
|
|
||||||
static int
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
INET_resolve(char *name, struct sockaddr_in *sin)
|
static int in_ether(char *bufp, struct sockaddr *sap);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
||||||
|
extern int display_interfaces(void);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Our main function.
|
||||||
|
*/
|
||||||
|
|
||||||
|
int ifconfig_main(int argc, char **argv)
|
||||||
{
|
{
|
||||||
sin->sin_family = AF_INET;
|
struct ifreq ifr;
|
||||||
sin->sin_port = 0;
|
struct sockaddr_in sai;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
struct sockaddr sa;
|
||||||
|
#endif
|
||||||
|
const struct arg1opt *a1op;
|
||||||
|
const struct options *op;
|
||||||
|
int sockfd; /* socket fd we use to manipulate stuff with */
|
||||||
|
int goterr;
|
||||||
|
int selector;
|
||||||
|
char *p;
|
||||||
|
char host[128];
|
||||||
|
unsigned char mask;
|
||||||
|
unsigned char did_flags;
|
||||||
|
|
||||||
/* Default is special, meaning 0.0.0.0. */
|
goterr = 0;
|
||||||
if (strcmp(name, "default")==0) {
|
did_flags = 0;
|
||||||
sin->sin_addr.s_addr = INADDR_ANY;
|
|
||||||
return 1;
|
if(argc < 2) {
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
||||||
|
return(display_interfaces());
|
||||||
|
#else
|
||||||
|
show_usage();
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
/* Look to see if it's a dotted quad. */
|
|
||||||
if (inet_aton(name, &sin->sin_addr)) {
|
/* Create a channel to the NET kernel. */
|
||||||
return 0;
|
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
|
||||||
|
perror("socket");
|
||||||
|
exit(1);
|
||||||
}
|
}
|
||||||
/* guess not.. */
|
|
||||||
errno = EINVAL;
|
/* skip argv[0] */
|
||||||
return -1;
|
argc--;
|
||||||
|
argv++;
|
||||||
|
|
||||||
|
/* get interface name */
|
||||||
|
safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
|
||||||
|
|
||||||
|
/* Process the remaining arguments. */
|
||||||
|
while (*++argv != (char *) NULL) {
|
||||||
|
p = *argv;
|
||||||
|
mask = N_MASK;
|
||||||
|
if (*p == '-') { /* If the arg starts with '-'... */
|
||||||
|
++p; /* advance past it and */
|
||||||
|
mask = M_MASK; /* set the appropriate mask. */
|
||||||
|
}
|
||||||
|
for (op = OptArray ; op->name ; op++) { /* Find table entry. */
|
||||||
|
if (!strcmp(p,op->name)) { /* If name matches... */
|
||||||
|
if ((mask &= op->flags)) { /* set the mask and go. */
|
||||||
|
goto FOUND_ARG;;
|
||||||
|
}
|
||||||
|
/* If we get here, there was a valid arg with an */
|
||||||
|
/* invalid '-' prefix. */
|
||||||
|
++goterr;
|
||||||
|
goto LOOP;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* We fell through, so treat as possible hostname. */
|
||||||
|
a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1;
|
||||||
|
mask = op->arg_flags;
|
||||||
|
goto HOSTNAME;
|
||||||
|
|
||||||
|
FOUND_ARG:
|
||||||
|
if (mask & ARG_MASK) {
|
||||||
|
mask = op->arg_flags;
|
||||||
|
a1op = Arg1Opt + (op - OptArray);
|
||||||
|
if (mask & A_NETMASK & did_flags) {
|
||||||
|
show_usage();
|
||||||
|
}
|
||||||
|
if (*++argv == NULL) {
|
||||||
|
if (mask & A_ARG_REQ) {
|
||||||
|
show_usage();
|
||||||
|
} else {
|
||||||
|
--argv;
|
||||||
|
mask &= A_SET_AFTER; /* just for broadcast */
|
||||||
|
}
|
||||||
|
} else { /* got an arg so process it */
|
||||||
|
HOSTNAME:
|
||||||
|
did_flags |= (mask & A_NETMASK);
|
||||||
|
if (mask & A_CAST_HOST_COPY) {
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
if (mask & A_CAST_RESOLVE) {
|
||||||
|
#endif
|
||||||
|
safe_strncpy(host, *argv, (sizeof host));
|
||||||
|
sai.sin_family = AF_INET;
|
||||||
|
sai.sin_port = 0;
|
||||||
|
if (!strcmp(host, "default")) {
|
||||||
|
/* Default is special, meaning 0.0.0.0. */
|
||||||
|
sai.sin_addr.s_addr = INADDR_ANY;
|
||||||
|
} else if (inet_aton(host, &sai.sin_addr) == 0) {
|
||||||
|
/* It's not a dotted quad. */
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
p = (char *) &sai;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
|
} else { /* A_CAST_HOST_COPY_IN_ETHER */
|
||||||
|
/* This is the "hw" arg case. */
|
||||||
|
if (strcmp("ether", *argv) || (*++argv == NULL)) {
|
||||||
|
show_usage();
|
||||||
|
}
|
||||||
|
safe_strncpy(host, *argv, (sizeof host));
|
||||||
|
if (in_ether(host, &sa)) {
|
||||||
|
fprintf(stderr, "invalid hw-addr %s\n", host);
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
p = (char *) &sa;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
memcpy((((char *)(&ifr)) + a1op->ifr_offset),
|
||||||
|
p, sizeof(struct sockaddr));
|
||||||
|
} else {
|
||||||
|
unsigned int i = strtoul(*argv,NULL,0);
|
||||||
|
p = ((char *)(&ifr)) + a1op->ifr_offset;
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
|
||||||
|
if (mask & A_MAP_TYPE) {
|
||||||
|
if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) {
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) {
|
||||||
|
*((unsigned char *) p) = i;
|
||||||
|
} else if (mask & A_MAP_USHORT) {
|
||||||
|
*((unsigned short *) p) = i;
|
||||||
|
} else {
|
||||||
|
*((unsigned long *) p) = i;
|
||||||
|
}
|
||||||
|
} else
|
||||||
|
#endif
|
||||||
|
if (mask & A_CAST_CHAR_PTR) {
|
||||||
|
*((caddr_t *) p) = (caddr_t) i;
|
||||||
|
} else { /* A_CAST_INT */
|
||||||
|
*((int *) p) = i;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
|
||||||
|
perror(a1op->name);
|
||||||
|
++goterr;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef QUESTIONABLE_ALIAS_CASE
|
||||||
|
if (mask & A_COLON_CHK) {
|
||||||
|
/*
|
||||||
|
* Don't do the set_flag() if the address is an alias with
|
||||||
|
* a - at the end, since it's deleted already! - Roman
|
||||||
|
*
|
||||||
|
* Should really use regex.h here, not sure though how well
|
||||||
|
* it'll go with the cross-platform support etc.
|
||||||
|
*/
|
||||||
|
char *ptr;
|
||||||
|
short int found_colon = 0;
|
||||||
|
for (ptr = ifr.ifr_name; *ptr; ptr++ ) {
|
||||||
|
if (*ptr == ':') {
|
||||||
|
found_colon++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (found_colon && *(ptr - 1) == '-') {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
if (!(mask & A_SET_AFTER)) {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
mask = N_SET;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
|
||||||
|
perror("SIOCGIFFLAGS");
|
||||||
|
++goterr;
|
||||||
|
} else {
|
||||||
|
selector = op->selector;
|
||||||
|
if (mask & SET_MASK) {
|
||||||
|
ifr.ifr_flags |= selector;
|
||||||
|
} else {
|
||||||
|
ifr.ifr_flags &= ~selector;
|
||||||
|
}
|
||||||
|
if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
|
||||||
|
perror("SIOCSIFFLAGS");
|
||||||
|
++goterr;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
LOOP:
|
||||||
|
} /* end of while-loop */
|
||||||
|
|
||||||
|
return goterr;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#ifdef BB_FEATURE_IFCONFIG_HW
|
||||||
/* Input an Ethernet address and convert to binary. */
|
/* Input an Ethernet address and convert to binary. */
|
||||||
static int
|
static int
|
||||||
in_ether(char *bufp, struct sockaddr *sap)
|
in_ether(char *bufp, struct sockaddr *sap)
|
||||||
{
|
{
|
||||||
unsigned char *ptr;
|
unsigned char *ptr;
|
||||||
char c, *orig;
|
int i, j;
|
||||||
int i;
|
unsigned char val;
|
||||||
unsigned val;
|
unsigned char c;
|
||||||
|
|
||||||
sap->sa_family = ARPHRD_ETHER;
|
sap->sa_family = ARPHRD_ETHER;
|
||||||
ptr = sap->sa_data;
|
ptr = sap->sa_data;
|
||||||
|
|
||||||
i = 0;
|
for (i = 0 ; i < ETH_ALEN ; i++) {
|
||||||
orig = bufp;
|
|
||||||
while ((*bufp != '\0') && (i < ETH_ALEN)) {
|
|
||||||
val = 0;
|
val = 0;
|
||||||
c = *bufp++;
|
|
||||||
if (isdigit(c))
|
/* We might get a semicolon here - not required. */
|
||||||
val = c - '0';
|
if (i && (*bufp == ':')) {
|
||||||
else if (c >= 'a' && c <= 'f')
|
|
||||||
val = c - 'a' + 10;
|
|
||||||
else if (c >= 'A' && c <= 'F')
|
|
||||||
val = c - 'A' + 10;
|
|
||||||
else {
|
|
||||||
#ifdef DEBUG
|
|
||||||
error_msg(
|
|
||||||
_("in_ether(%s): invalid ether address!"),
|
|
||||||
orig);
|
|
||||||
#endif
|
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
val <<= 4;
|
|
||||||
c = *bufp;
|
|
||||||
if (isdigit(c))
|
|
||||||
val |= c - '0';
|
|
||||||
else if (c >= 'a' && c <= 'f')
|
|
||||||
val |= c - 'a' + 10;
|
|
||||||
else if (c >= 'A' && c <= 'F')
|
|
||||||
val |= c - 'A' + 10;
|
|
||||||
else if (c == ':' || c == 0)
|
|
||||||
val >>= 4;
|
|
||||||
else {
|
|
||||||
#ifdef DEBUG
|
|
||||||
error_msg(
|
|
||||||
_("in_ether(%s): invalid ether address!"),
|
|
||||||
orig);
|
|
||||||
#endif
|
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
if (c != 0)
|
|
||||||
bufp++;
|
bufp++;
|
||||||
*ptr++ = (unsigned char) (val & 0377);
|
}
|
||||||
i++;
|
|
||||||
|
for (j=0 ; j<2 ; j++) {
|
||||||
/* optional colon already handled, don't swallow a second */
|
c = *bufp;
|
||||||
|
if (c >= '0' && c <= '9') {
|
||||||
|
c -= '0';
|
||||||
|
} else if (c >= 'a' && c <= 'f') {
|
||||||
|
c -= ('a' + 10);
|
||||||
|
} else if (c >= 'A' && c <= 'F') {
|
||||||
|
c -= ('A' + 10);
|
||||||
|
} else if (j && (c == ':' || c == 0)) {
|
||||||
|
break;
|
||||||
|
} else {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
++bufp;
|
||||||
|
val <<= 4;
|
||||||
|
val += c;
|
||||||
|
}
|
||||||
|
*ptr++ = val;
|
||||||
}
|
}
|
||||||
|
|
||||||
if(i != ETH_ALEN) {
|
return (int) (*bufp); /* Error if we don't end at end of string. */
|
||||||
errno = EINVAL;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef BB_FEATURE_IFCONFIG_STATUS
|
|
||||||
extern int display_interfaces(void);
|
|
||||||
#else
|
|
||||||
int display_interfaces(void)
|
|
||||||
{
|
|
||||||
show_usage();
|
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
int ifconfig_main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
struct ifreq ifr;
|
|
||||||
struct sockaddr_in sa;
|
|
||||||
char **spp, *cmd;
|
|
||||||
int goterr = 0;
|
|
||||||
int r;
|
|
||||||
/* int didnetmask = 0; special case input error detection no longer implemented */
|
|
||||||
char host[128];
|
|
||||||
const struct flag_map *ft;
|
|
||||||
int i, sense;
|
|
||||||
int a, ecode;
|
|
||||||
struct sockaddr *d;
|
|
||||||
|
|
||||||
if(argc < 2) {
|
|
||||||
return(display_interfaces());
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Create a channel to the NET kernel. */
|
|
||||||
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
|
|
||||||
perror_msg_and_die("socket");
|
|
||||||
}
|
|
||||||
|
|
||||||
/* skip argv[0] */
|
|
||||||
|
|
||||||
argc--;
|
|
||||||
argv++;
|
|
||||||
|
|
||||||
spp = argv;
|
|
||||||
|
|
||||||
/* get interface name */
|
|
||||||
|
|
||||||
safe_strncpy(ifr.ifr_name, *spp++, IFNAMSIZ);
|
|
||||||
|
|
||||||
/* Process the remaining arguments. */
|
|
||||||
while (*spp != (char *) NULL) {
|
|
||||||
cmd = *spp;
|
|
||||||
sense=0;
|
|
||||||
if (*cmd=='-') {
|
|
||||||
sense=1;
|
|
||||||
cmd++;
|
|
||||||
}
|
|
||||||
ft = NULL;
|
|
||||||
for (i=0; i<(sizeof(flag_table)/sizeof(struct flag_map)); i++) {
|
|
||||||
if (strcmp(cmd, flag_table[i].name)==0) {
|
|
||||||
ft=flag_table+i;
|
|
||||||
spp++;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (ft) {
|
|
||||||
switch (ft->action+sense) {
|
|
||||||
case 4:
|
|
||||||
case 7:
|
|
||||||
case 8:
|
|
||||||
case 15:
|
|
||||||
goterr |= clr_flag(ifr.ifr_name, ft->flag);
|
|
||||||
break;
|
|
||||||
case 2:
|
|
||||||
case 6:
|
|
||||||
case 9:
|
|
||||||
goterr |= set_flag(ifr.ifr_name, ft->flag);
|
|
||||||
break;
|
|
||||||
case 10:
|
|
||||||
if (*spp == NULL)
|
|
||||||
show_usage();
|
|
||||||
a = atoi(*spp++);
|
|
||||||
switch (ft->frob) {
|
|
||||||
case L_METRIC: ifr.ifr_metric = a; break;
|
|
||||||
case L_MTU: ifr.ifr_mtu = a; break;
|
|
||||||
case L_DATA: ifr.ifr_data = (caddr_t) a; break;
|
|
||||||
default: error_msg_and_die("bugaboo");
|
|
||||||
}
|
|
||||||
|
|
||||||
if (ioctl(sockfd, ft->sflag, &ifr) < 0) {
|
|
||||||
perror(ft->name); /* imperfect */
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case 12:
|
|
||||||
case 14:
|
|
||||||
if (ft->action+sense==10 && *spp == NULL) {
|
|
||||||
show_usage();
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
if (*spp != NULL) {
|
|
||||||
safe_strncpy(host, *spp, (sizeof host));
|
|
||||||
spp++;
|
|
||||||
if (ft->frob == L_HWAD) {
|
|
||||||
ecode = in_ether(host, &ifr.ifr_hwaddr);
|
|
||||||
} else {
|
|
||||||
switch (ft->frob) {
|
|
||||||
case L_BROAD: d = &ifr.ifr_broadaddr; break;
|
|
||||||
case L_DEST: d = &ifr.ifr_dstaddr; break;
|
|
||||||
case L_MASK: d = &ifr.ifr_netmask; break;
|
|
||||||
default: error_msg_and_die("bugaboo");
|
|
||||||
}
|
|
||||||
ecode = INET_resolve(host, (struct sockaddr_in *) d);
|
|
||||||
}
|
|
||||||
if (ecode < 0 || ioctl(sockfd, ft->sflag, &ifr) < 0) {
|
|
||||||
perror(ft->name); /* imperfect */
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (ft->flag != 0) {
|
|
||||||
goterr |= set_flag(ifr.ifr_name, ft->flag);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
show_usage();
|
|
||||||
} /* end of switch */
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If the next argument is a valid hostname, assume OK. */
|
|
||||||
safe_strncpy(host, *spp, (sizeof host));
|
|
||||||
|
|
||||||
if (INET_resolve(host, &sa) < 0) {
|
|
||||||
show_usage();
|
|
||||||
}
|
|
||||||
memcpy((char *) &ifr.ifr_addr,
|
|
||||||
(char *) &sa, sizeof(struct sockaddr));
|
|
||||||
|
|
||||||
r = ioctl(sockfd, SIOCSIFADDR, &ifr);
|
|
||||||
|
|
||||||
if (r < 0) {
|
|
||||||
perror("SIOCSIFADDR");
|
|
||||||
goterr++;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Don't do the set_flag() if the address is an alias with a - at the
|
|
||||||
* end, since it's deleted already! - Roman
|
|
||||||
*
|
|
||||||
* Should really use regex.h here, not sure though how well it'll go
|
|
||||||
* with the cross-platform support etc.
|
|
||||||
*/
|
|
||||||
{
|
|
||||||
char *ptr;
|
|
||||||
short int found_colon = 0;
|
|
||||||
for (ptr = ifr.ifr_name; *ptr; ptr++ )
|
|
||||||
if (*ptr == ':') found_colon++;
|
|
||||||
|
|
||||||
if (!(found_colon && *(ptr - 1) == '-'))
|
|
||||||
goterr |= set_flag(ifr.ifr_name, (IFF_UP | IFF_RUNNING));
|
|
||||||
}
|
|
||||||
|
|
||||||
spp++;
|
|
||||||
|
|
||||||
} /* end of while-loop */
|
|
||||||
|
|
||||||
return goterr;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user