mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-28 14:10:34 +00:00
New applet, nameif by Nick Fedchik and myself.
This commit is contained in:
Glenn L McGrath
parent
9130c85847
commit
f03c933e47
@ -368,6 +368,9 @@
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#ifdef CONFIG_MV
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APPLET(mv, mv_main, _BB_DIR_BIN, _BB_SUID_NEVER)
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#endif
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#ifdef CONFIG_NAMEIF
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APPLET(nameif, nameif_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
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#endif
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#ifdef CONFIG_NC
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APPLET(nc, nc_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
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#endif
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@ -1453,6 +1453,19 @@
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#define mv_example_usage \
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"$ mv /tmp/foo /bin/bar\n"
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#define nameif_trivial_usage \
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"[OPTIONS] [{IFNAME MACADDR}]"
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#define nameif_full_usage \
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"Nameif renaming network interface while it in the down state.\n\n" \
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"Options:\n" \
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"\t-c FILE\t\tUse another configuration file (default is /etc/mactab)\n" \
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"\t-s\t\tUse syslog (LOCAL0 facility).\n" \
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"\tIFNAME MACADDR\tnew_interface_name interface_mac_address\n"
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#define nameif_example_usage \
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"$ nameif -s dmz0 00:A0:C9:8C:F6:3F\n" \
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" or\n" \
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"$ nameif -c /etc/my_mactab_file\n" \
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#define nc_trivial_usage \
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"[OPTIONS] [IP] [port]"
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#define nc_full_usage \
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@ -192,6 +192,20 @@ config CONFIG_IPTUNNEL
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help
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Please submit a patch to add help text for this item.
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config CONFIG_NAMEIF
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bool "nameif"
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default n
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help
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nameif used to rename network interface by its MAC address.
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Renamed interfaces MUST be in the down state.
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It is possible to use file (default: /etc/mactab)
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with list of new interface names and MACs.
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Maximum interface name length: IF_NAMESIZE = 16
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File fields are sepatated by space or tab.
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File format:
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# Comment
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new_interface_name XX:XX:XX:XX:XX:XX
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config CONFIG_NC
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bool "nc"
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default n
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@ -32,6 +32,7 @@ NETWORKING-$(CONFIG_IPADDR) += ipaddr.o
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NETWORKING-$(CONFIG_IPLINK) += iplink.o
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NETWORKING-$(CONFIG_IPROUTE) += iproute.o
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NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o
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NETWORKING-$(CONFIG_NAMEIF) += nameif.o
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NETWORKING-$(CONFIG_NC) += nc.o
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NETWORKING-$(CONFIG_NETSTAT) += netstat.o
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NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o
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217
networking/nameif.c
Normal file
217
networking/nameif.c
Normal file
@ -0,0 +1,217 @@
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/*
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* nameif.c - Naming Interfaces based on MAC address for busybox.
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*
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* Writen 2000 by Andi Kleen.
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* Busybox port 2002 by Nick Fedchik <nick@fedchik.org.ua>
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* Glenn McGrath <bug1@optushome.com.au>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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*/
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <net/if.h>
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#include <netinet/ether.h>
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#include "busybox.h"
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/* set interface name, from <linux/sockios.h> */
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#define SIOCSIFNAME 0x8923
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/* Octets in one ethernet addr, from <linux/if_ether.h> */
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#define ETH_ALEN 6
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#ifndef ifr_newname
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#define ifr_newname ifr_ifru.ifru_slave
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#endif
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typedef struct mactable_s {
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struct mactable_s *next;
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struct mactable_s **pprev;
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char *ifname;
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struct ether_addr *mac;
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} mactable_t;
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static void serror_msg_and_die(const char use_syslog, const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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if (use_syslog) {
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openlog("nameif", 0, LOG_LOCAL0);
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syslog(LOG_ERR, s, ap);
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closelog();
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} else {
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vfprintf(stderr, s, ap);
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putc('\n', stderr);
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}
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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int nameif_main(int argc, char **argv)
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{
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mactable_t *clist = NULL;
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FILE *ifh;
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char *fname = "/etc/mactab";
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char *line;
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unsigned short linenum = 0;
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unsigned char use_syslog = 0;
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int ctl_sk = -1;
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int opt;
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static struct option opts[] = {
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{"syslog", 0, NULL, 's'},
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{"configfile", 1, NULL, 'c'},
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{NULL},
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};
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while ((opt = getopt_long(argc, argv, "c:s", opts, NULL)) != -1) {
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switch (opt) {
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case 'c':
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fname = optarg;
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break;
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case 's':
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use_syslog = 1;
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break;
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default:
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show_usage();
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}
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}
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if ((argc - optind) & 1) {
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show_usage();
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}
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if (optind < argc) {
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while (optind < argc) {
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struct ether_addr *mac;
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mactable_t *ch;
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if (strlen(argv[optind]) > IF_NAMESIZE) {
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serror_msg_and_die(use_syslog, "interface name `%s' too long", argv[optind]);
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}
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optind++;
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mac = ether_aton(argv[optind]);
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if (mac == NULL) {
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serror_msg_and_die(use_syslog, "cannot parse MAC %s", argv[optind]);
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}
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ch = xcalloc(1, sizeof(mactable_t));
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ch->ifname = strdup(argv[optind - 1]);
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ch->mac = xcalloc(1, ETH_ALEN);
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memcpy(ch->mac, &mac, ETH_ALEN);
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optind++;
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if (clist)
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clist->pprev = &ch->next;
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ch->next = clist;
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ch->pprev = &clist;
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clist = ch;
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}
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} else {
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ifh = xfopen(fname, "r");
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while ((line = get_line_from_file(ifh)) != NULL) {
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struct ether_addr *mac;
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mactable_t *ch;
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char *line_ptr;
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unsigned short name_length;
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line_ptr = line + strspn(line, " \t");
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if ((line_ptr[0] == '#') || (line_ptr[0] == '\n'))
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continue;
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name_length = strcspn(line_ptr, " \t");
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if (name_length > IF_NAMESIZE) {
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serror_msg_and_die(use_syslog, "interface name `%s' too long", argv[optind]);
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}
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ch = xcalloc(1, sizeof(mactable_t));
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ch->ifname = strndup(line_ptr, name_length);
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line_ptr += name_length;
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line_ptr += strspn(line_ptr, " \t");
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name_length = strspn(line_ptr, "0123456789ABCDEFabcdef:");
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line_ptr[name_length] = '\0';
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mac = ether_aton(line_ptr);
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if (mac == NULL) {
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serror_msg_and_die(use_syslog, "cannot parse MAC %s", argv[optind]);
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}
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ch->mac = xcalloc(1, ETH_ALEN);
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memcpy(ch->mac, mac, ETH_ALEN);
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if (clist)
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clist->pprev = &ch->next;
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ch->next = clist;
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ch->pprev = &clist;
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clist = ch;
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free(line);
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}
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fclose(ifh);
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}
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ifh = xfopen("/proc/net/dev", "r");
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while ((line = get_line_from_file(ifh)) != NULL) {
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char *line_ptr;
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unsigned short iface_name_length;
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struct ifreq ifr;
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mactable_t *ch = NULL;
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linenum++;
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if (linenum < 3)
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continue;
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line_ptr = line + strspn(line, " \t");
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if (line_ptr[0] == '\n')
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continue;
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iface_name_length = strcspn(line_ptr, ":");
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if (ctl_sk < 0)
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ctl_sk = socket(PF_INET, SOCK_DGRAM, 0);
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memset(&ifr, 0, sizeof(struct ifreq));
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strncpy(ifr.ifr_name, line_ptr, iface_name_length);
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if (ioctl(ctl_sk, SIOCGIFHWADDR, &ifr) < 0) {
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serror_msg_and_die(use_syslog, "cannot change name of %s to %s: %s", ifr.ifr_name, ch->ifname, strerror(errno));
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}
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for (ch = clist; ch; ch = ch->next)
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if (!memcmp(ch->mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN))
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break;
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if (ch == NULL) {
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continue;
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}
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strcpy(ifr.ifr_newname, ch->ifname);
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if (ioctl(ctl_sk, SIOCSIFNAME, &ifr) < 0) {;
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serror_msg_and_die(use_syslog, "cannot change name of %s to %s: %s", ifr.ifr_name, ch->ifname, strerror(errno));
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}
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*ch->pprev = ch->next;
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free(ch);
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free(line);
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}
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fclose(ifh);
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while (clist) {
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mactable_t *ch;
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ch = clist;
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clist = clist->next;
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free(ch);
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}
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return 0;
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}
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