[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/networking/arp.c b/ap/app/busybox/src/networking/arp.c
new file mode 100644
index 0000000..1c99987
--- /dev/null
+++ b/ap/app/busybox/src/networking/arp.c
@@ -0,0 +1,533 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * arp.c - Manipulate the system ARP cache
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Author: Fred N. van Kempen, <waltje at uwalt.nl.mugnet.org>
+ * Busybox port: Paul van Gool <pvangool at mimotech.com>
+ *
+ * modified for getopt32 by Arne Bernin <arne [at] alamut.de>
+ */
+
+//usage:#define arp_trivial_usage
+//usage: "\n[-vn] [-H HWTYPE] [-i IF] -a [HOSTNAME]"
+//usage: "\n[-v] [-i IF] -d HOSTNAME [pub]"
+//usage: "\n[-v] [-H HWTYPE] [-i IF] -s HOSTNAME HWADDR [temp]"
+//usage: "\n[-v] [-H HWTYPE] [-i IF] -s HOSTNAME HWADDR [netmask MASK] pub"
+//usage: "\n[-v] [-H HWTYPE] [-i IF] -Ds HOSTNAME IFACE [netmask MASK] pub"
+//usage:#define arp_full_usage "\n\n"
+//usage: "Manipulate ARP cache\n"
+//usage: "\n -a Display (all) hosts"
+//usage: "\n -s Set new ARP entry"
+//usage: "\n -d Delete a specified entry"
+//usage: "\n -v Verbose"
+//usage: "\n -n Don't resolve names"
+//usage: "\n -i IF Network interface"
+//usage: "\n -D Read <hwaddr> from given device"
+//usage: "\n -A,-p AF Protocol family"
+//usage: "\n -H HWTYPE Hardware address type"
+
+#include "libbb.h"
+#include "inet_common.h"
+
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <netinet/ether.h>
+#include <netpacket/packet.h>
+
+#define DEBUG 0
+
+#define DFLT_AF "inet"
+#define DFLT_HW "ether"
+
+enum {
+ ARP_OPT_A = (1 << 0),
+ ARP_OPT_p = (1 << 1),
+ ARP_OPT_H = (1 << 2),
+ ARP_OPT_t = (1 << 3),
+ ARP_OPT_i = (1 << 4),
+ ARP_OPT_a = (1 << 5),
+ ARP_OPT_d = (1 << 6),
+ ARP_OPT_n = (1 << 7), /* do not resolve addresses */
+ ARP_OPT_D = (1 << 8), /* HW-address is devicename */
+ ARP_OPT_s = (1 << 9),
+ ARP_OPT_v = (1 << 10) * DEBUG, /* debugging output flag */
+};
+
+enum {
+ sockfd = 3, /* active socket descriptor */
+};
+
+struct globals {
+ const struct aftype *ap; /* current address family */
+ const struct hwtype *hw; /* current hardware type */
+ const char *device; /* current device */
+ smallint hw_set; /* flag if hw-type was set (-H) */
+
+} FIX_ALIASING;
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define ap (G.ap )
+#define hw (G.hw )
+#define device (G.device )
+#define hw_set (G.hw_set )
+#define INIT_G() do { \
+ device = ""; \
+} while (0)
+
+
+static const char options[] ALIGN1 =
+ "pub\0"
+ "priv\0"
+ "temp\0"
+ "trail\0"
+ "dontpub\0"
+ "auto\0"
+ "dev\0"
+ "netmask\0";
+
+/* Delete an entry from the ARP cache. */
+/* Called only from main, once */
+static int arp_del(char **args)
+{
+ char *host;
+ struct arpreq req;
+ struct sockaddr sa;
+ int flags = 0;
+ int err;
+
+ memset(&req, 0, sizeof(req));
+
+ /* Resolve the host name. */
+ host = *args;
+ if (ap->input(host, &sa) < 0) {
+ bb_herror_msg_and_die("%s", host);
+ }
+
+ /* If a host has more than one address, use the correct one! */
+ memcpy(&req.arp_pa, &sa, sizeof(struct sockaddr));
+
+ if (hw_set)
+ req.arp_ha.sa_family = hw->type;
+
+ req.arp_flags = ATF_PERM;
+ args++;
+ while (*args != NULL) {
+ switch (index_in_strings(options, *args)) {
+ case 0: /* "pub" */
+ flags |= 1;
+ args++;
+ break;
+ case 1: /* "priv" */
+ flags |= 2;
+ args++;
+ break;
+ case 2: /* "temp" */
+ req.arp_flags &= ~ATF_PERM;
+ args++;
+ break;
+ case 3: /* "trail" */
+ req.arp_flags |= ATF_USETRAILERS;
+ args++;
+ break;
+ case 4: /* "dontpub" */
+#ifdef HAVE_ATF_DONTPUB
+ req.arp_flags |= ATF_DONTPUB;
+#else
+ bb_error_msg("feature ATF_DONTPUB is not supported");
+#endif
+ args++;
+ break;
+ case 5: /* "auto" */
+#ifdef HAVE_ATF_MAGIC
+ req.arp_flags |= ATF_MAGIC;
+#else
+ bb_error_msg("feature ATF_MAGIC is not supported");
+#endif
+ args++;
+ break;
+ case 6: /* "dev" */
+ if (*++args == NULL)
+ bb_show_usage();
+ device = *args;
+ args++;
+ break;
+ case 7: /* "netmask" */
+ if (*++args == NULL)
+ bb_show_usage();
+ if (strcmp(*args, "255.255.255.255") != 0) {
+ host = *args;
+ if (ap->input(host, &sa) < 0) {
+ bb_herror_msg_and_die("%s", host);
+ }
+ memcpy(&req.arp_netmask, &sa, sizeof(struct sockaddr));
+ req.arp_flags |= ATF_NETMASK;
+ }
+ args++;
+ break;
+ default:
+ bb_show_usage();
+ break;
+ }
+ }
+ if (flags == 0)
+ flags = 3;
+
+ strncpy(req.arp_dev, device, sizeof(req.arp_dev));
+
+ err = -1;
+
+ /* Call the kernel. */
+ if (flags & 2) {
+ if (option_mask32 & ARP_OPT_v)
+ bb_error_msg("SIOCDARP(nopub)");
+ err = ioctl(sockfd, SIOCDARP, &req);
+ if (err < 0) {
+ if (errno == ENXIO) {
+ if (flags & 1)
+ goto nopub;
+ printf("No ARP entry for %s\n", host);
+ return -1;
+ }
+ bb_perror_msg_and_die("SIOCDARP(priv)");
+ }
+ }
+ if ((flags & 1) && err) {
+ nopub:
+ req.arp_flags |= ATF_PUBL;
+ if (option_mask32 & ARP_OPT_v)
+ bb_error_msg("SIOCDARP(pub)");
+ if (ioctl(sockfd, SIOCDARP, &req) < 0) {
+ if (errno == ENXIO) {
+ printf("No ARP entry for %s\n", host);
+ return -1;
+ }
+ bb_perror_msg_and_die("SIOCDARP(pub)");
+ }
+ }
+ return 0;
+}
+
+/* Get the hardware address to a specified interface name */
+static void arp_getdevhw(char *ifname, struct sockaddr *sa,
+ const struct hwtype *hwt)
+{
+ struct ifreq ifr;
+ const struct hwtype *xhw;
+
+ strcpy(ifr.ifr_name, ifname);
+ ioctl_or_perror_and_die(sockfd, SIOCGIFHWADDR, &ifr,
+ "cant get HW-Address for '%s'", ifname);
+ if (hwt && (ifr.ifr_hwaddr.sa_family != hw->type)) {
+ bb_error_msg_and_die("protocol type mismatch");
+ }
+ memcpy(sa, &(ifr.ifr_hwaddr), sizeof(struct sockaddr));
+
+ if (option_mask32 & ARP_OPT_v) {
+ xhw = get_hwntype(ifr.ifr_hwaddr.sa_family);
+ if (!xhw || !xhw->print) {
+ xhw = get_hwntype(-1);
+ }
+ bb_error_msg("device '%s' has HW address %s '%s'",
+ ifname, xhw->name,
+ xhw->print((unsigned char *) &ifr.ifr_hwaddr.sa_data));
+ }
+}
+
+/* Set an entry in the ARP cache. */
+/* Called only from main, once */
+static int arp_set(char **args)
+{
+ char *host;
+ struct arpreq req;
+ struct sockaddr sa;
+ int flags;
+
+ memset(&req, 0, sizeof(req));
+
+ host = *args++;
+ if (ap->input(host, &sa) < 0) {
+ bb_herror_msg_and_die("%s", host);
+ }
+ /* If a host has more than one address, use the correct one! */
+ memcpy(&req.arp_pa, &sa, sizeof(struct sockaddr));
+
+ /* Fetch the hardware address. */
+ if (*args == NULL) {
+ bb_error_msg_and_die("need hardware address");
+ }
+ if (option_mask32 & ARP_OPT_D) {
+ arp_getdevhw(*args++, &req.arp_ha, hw_set ? hw : NULL);
+ } else {
+ if (hw->input(*args++, &req.arp_ha) < 0) {
+ bb_error_msg_and_die("invalid hardware address");
+ }
+ }
+
+ /* Check out any modifiers. */
+ flags = ATF_PERM | ATF_COM;
+ while (*args != NULL) {
+ switch (index_in_strings(options, *args)) {
+ case 0: /* "pub" */
+ flags |= ATF_PUBL;
+ args++;
+ break;
+ case 1: /* "priv" */
+ flags &= ~ATF_PUBL;
+ args++;
+ break;
+ case 2: /* "temp" */
+ flags &= ~ATF_PERM;
+ args++;
+ break;
+ case 3: /* "trail" */
+ flags |= ATF_USETRAILERS;
+ args++;
+ break;
+ case 4: /* "dontpub" */
+#ifdef HAVE_ATF_DONTPUB
+ flags |= ATF_DONTPUB;
+#else
+ bb_error_msg("feature ATF_DONTPUB is not supported");
+#endif
+ args++;
+ break;
+ case 5: /* "auto" */
+#ifdef HAVE_ATF_MAGIC
+ flags |= ATF_MAGIC;
+#else
+ bb_error_msg("feature ATF_MAGIC is not supported");
+#endif
+ args++;
+ break;
+ case 6: /* "dev" */
+ if (*++args == NULL)
+ bb_show_usage();
+ device = *args;
+ args++;
+ break;
+ case 7: /* "netmask" */
+ if (*++args == NULL)
+ bb_show_usage();
+ if (strcmp(*args, "255.255.255.255") != 0) {
+ host = *args;
+ if (ap->input(host, &sa) < 0) {
+ bb_herror_msg_and_die("%s", host);
+ }
+ memcpy(&req.arp_netmask, &sa, sizeof(struct sockaddr));
+ flags |= ATF_NETMASK;
+ }
+ args++;
+ break;
+ default:
+ bb_show_usage();
+ break;
+ }
+ }
+
+ /* Fill in the remainder of the request. */
+ req.arp_flags = flags;
+
+ strncpy(req.arp_dev, device, sizeof(req.arp_dev));
+
+ /* Call the kernel. */
+ if (option_mask32 & ARP_OPT_v)
+ bb_error_msg("SIOCSARP()");
+ xioctl(sockfd, SIOCSARP, &req);
+ return 0;
+}
+
+
+/* Print the contents of an ARP request block. */
+static void
+arp_disp(const char *name, char *ip, int type, int arp_flags,
+ char *hwa, char *mask, char *dev)
+{
+ static const int arp_masks[] = {
+ ATF_PERM, ATF_PUBL,
+#ifdef HAVE_ATF_MAGIC
+ ATF_MAGIC,
+#endif
+#ifdef HAVE_ATF_DONTPUB
+ ATF_DONTPUB,
+#endif
+ ATF_USETRAILERS,
+ };
+ static const char arp_labels[] ALIGN1 = "PERM\0""PUP\0"
+#ifdef HAVE_ATF_MAGIC
+ "AUTO\0"
+#endif
+#ifdef HAVE_ATF_DONTPUB
+ "DONTPUB\0"
+#endif
+ "TRAIL\0"
+ ;
+
+ const struct hwtype *xhw;
+
+ xhw = get_hwntype(type);
+ if (xhw == NULL)
+ xhw = get_hwtype(DFLT_HW);
+
+ printf("%s (%s) at ", name, ip);
+
+ if (!(arp_flags & ATF_COM)) {
+ if (arp_flags & ATF_PUBL)
+ printf("* ");
+ else
+ printf("<incomplete> ");
+ } else {
+ printf("%s [%s] ", hwa, xhw->name);
+ }
+
+ if (arp_flags & ATF_NETMASK)
+ printf("netmask %s ", mask);
+
+ print_flags_separated(arp_masks, arp_labels, arp_flags, " ");
+ printf(" on %s\n", dev);
+}
+
+/* Display the contents of the ARP cache in the kernel. */
+/* Called only from main, once */
+static int arp_show(char *name)
+{
+ const char *host;
+ const char *hostname;
+ FILE *fp;
+ struct sockaddr sa;
+ int type, flags;
+ int num;
+ unsigned entries = 0, shown = 0;
+ char ip[128];
+ char hwa[128];
+ char mask[128];
+ char line[128];
+ char dev[128];
+
+ host = NULL;
+ if (name != NULL) {
+ /* Resolve the host name. */
+ if (ap->input(name, &sa) < 0) {
+ bb_herror_msg_and_die("%s", name);
+ }
+ host = xstrdup(ap->sprint(&sa, 1));
+ }
+ fp = xfopen_for_read("/proc/net/arp");
+ /* Bypass header -- read one line */
+ fgets(line, sizeof(line), fp);
+
+ /* Read the ARP cache entries. */
+ while (fgets(line, sizeof(line), fp)) {
+
+ mask[0] = '-'; mask[1] = '\0';
+ dev[0] = '-'; dev[1] = '\0';
+ /* All these strings can't overflow
+ * because fgets above reads limited amount of data */
+ num = sscanf(line, "%s 0x%x 0x%x %s %s %s\n",
+ ip, &type, &flags, hwa, mask, dev);
+ if (num < 4)
+ break;
+
+ entries++;
+ /* if the user specified hw-type differs, skip it */
+ if (hw_set && (type != hw->type))
+ continue;
+
+ /* if the user specified address differs, skip it */
+ if (host && strcmp(ip, host) != 0)
+ continue;
+
+ /* if the user specified device differs, skip it */
+ if (device[0] && strcmp(dev, device) != 0)
+ continue;
+
+ shown++;
+ /* This IS ugly but it works -be */
+ hostname = "?";
+ if (!(option_mask32 & ARP_OPT_n)) {
+ if (ap->input(ip, &sa) < 0)
+ hostname = ip;
+ else
+ hostname = ap->sprint(&sa, (option_mask32 & ARP_OPT_n) | 0x8000);
+ if (strcmp(hostname, ip) == 0)
+ hostname = "?";
+ }
+
+ arp_disp(hostname, ip, type, flags, hwa, mask, dev);
+ }
+ if (option_mask32 & ARP_OPT_v)
+ printf("Entries: %d\tSkipped: %d\tFound: %d\n",
+ entries, entries - shown, shown);
+
+ if (!shown) {
+ if (hw_set || host || device[0])
+ printf("No match found in %d entries\n", entries);
+ }
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ free((char*)host);
+ fclose(fp);
+ }
+ return 0;
+}
+
+int arp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int arp_main(int argc UNUSED_PARAM, char **argv)
+{
+ const char *hw_type = "ether";
+ const char *protocol;
+ unsigned opts;
+
+ INIT_G();
+
+ xmove_fd(xsocket(AF_INET, SOCK_DGRAM, 0), sockfd);
+ ap = get_aftype(DFLT_AF);
+ if (!ap)
+ bb_error_msg_and_die("%s: %s not supported", DFLT_AF, "address family");
+
+ opts = getopt32(argv, "A:p:H:t:i:adnDsv", &protocol, &protocol,
+ &hw_type, &hw_type, &device);
+ argv += optind;
+ if (opts & (ARP_OPT_A | ARP_OPT_p)) {
+ ap = get_aftype(protocol);
+ if (ap == NULL)
+ bb_error_msg_and_die("%s: unknown %s", protocol, "address family");
+ }
+ if (opts & (ARP_OPT_A | ARP_OPT_p)) {
+ hw = get_hwtype(hw_type);
+ if (hw == NULL)
+ bb_error_msg_and_die("%s: unknown %s", hw_type, "hardware type");
+ hw_set = 1;
+ }
+ //if (opts & ARP_OPT_i)... -i
+
+ if (ap->af != AF_INET) {
+ bb_error_msg_and_die("%s: kernel only supports 'inet'", ap->name);
+ }
+
+ /* If no hw type specified get default */
+ if (!hw) {
+ hw = get_hwtype(DFLT_HW);
+ if (!hw)
+ bb_error_msg_and_die("%s: %s not supported", DFLT_HW, "hardware type");
+ }
+
+ if (hw->alen <= 0) {
+ bb_error_msg_and_die("%s: %s without ARP support",
+ hw->name, "hardware type");
+ }
+
+ /* Now see what we have to do here... */
+ if (opts & (ARP_OPT_d | ARP_OPT_s)) {
+ if (argv[0] == NULL)
+ bb_error_msg_and_die("need host name");
+ if (opts & ARP_OPT_s)
+ return arp_set(argv);
+ return arp_del(argv);
+ }
+ //if (opts & ARP_OPT_a) - default
+ return arp_show(argv[0]);
+}