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-rw-r--r--arp.c1143
1 files changed, 570 insertions, 573 deletions
diff --git a/arp.c b/arp.c
index 4350d82..abfc72f 100644
--- a/arp.c
+++ b/arp.c
@@ -1,53 +1,53 @@
/*
- * arp This file contains an implementation of the command
- * that maintains the kernel's ARP cache. It is derived
- * from Berkeley UNIX arp(8), but cleaner and with sup-
- * port for devices other than Ethernet.
+ * arp This file contains an implementation of the command
+ * that maintains the kernel's ARP cache. It is derived
+ * from Berkeley UNIX arp(8), but cleaner and with sup-
+ * port for devices other than Ethernet.
*
- * NET-TOOLS A collection of programs that form the base set of the
- * NET-3 Networking Distribution for the LINUX operating
- * system.
+ * NET-TOOLS A collection of programs that form the base set of the
+ * NET-3 Networking Distribution for the LINUX operating
+ * system.
*
- * Version: arp 1.83 (1998-02-13)
+ * Version: $Id: arp.c,v 1.9 1998/11/15 20:07:31 freitag Exp $
*
- * Maintainer: Bernd 'eckes' Eckenfels, <net-tools@lina.inka.de>
+ * Maintainer: Bernd 'eckes' Eckenfels, <net-tools@lina.inka.de>
*
- * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
+ * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
*
* Changes:
- * (based on work from Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>)
- * Alan Cox : modified for NET3
- * Andrew Tridgell : proxy arp netmasks
- * Bernd Eckenfels : -n option
- * Bernd Eckenfels : Use only /proc for display
- * {1.60} Bernd Eckenfels : new arpcode (-i) for 1.3.42 but works
- * with 1.2.x, too
- * {1.61} Bernd Eckenfels : more verbose messages
- * {1.62} Bernd Eckenfels : check -t for hw adresses and try to
- * explain EINVAL (jeff)
- *970125 {1.63} Bernd Eckenfels : -a print hardwarename instead of tiltle
- *970201 {1.64} Bernd Eckenfels : net-features.h support
- *970203 {1.65} Bernd Eckenfels : "#define" in "#if",
- * -H|-A additional to -t|-p
- *970214 {1.66} Bernd Eckenfels : Fix optarg required for -H and -A
- *970412 {1.67} Bernd Eckenfels : device=""; is default
- *970514 {1.68} Bernd Eckenfels : -N and -D
- *970517 {1.69} Bernd Eckenfels : usage() fixed
- *970622 {1.70} Bernd Eckenfels : arp -d priv
- *970106 {1.80} Bernd Eckenfels : new syntax without -D and with "dev <If>",
- * ATF_MAGIC, ATF_DONTPUB support.
- * Typo fix (Debian Bug#5728 Giuliano Procida)
- *970803 {1.81} Bernd Eckenfels : removed junk comment line 1
- *970925 {1.82} Bernd Eckenfels : include fix for libc6
- *980213 (1.83) Phil Blundell: set ATF_COM on new entries
+ * (based on work from Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>)
+ * Alan Cox : modified for NET3
+ * Andrew Tridgell : proxy arp netmasks
+ * Bernd Eckenfels : -n option
+ * Bernd Eckenfels : Use only /proc for display
+ * {1.60} Bernd Eckenfels : new arpcode (-i) for 1.3.42 but works
+ * with 1.2.x, too
+ * {1.61} Bernd Eckenfels : more verbose messages
+ * {1.62} Bernd Eckenfels : check -t for hw adresses and try to
+ * explain EINVAL (jeff)
+ *970125 {1.63} Bernd Eckenfels : -a print hardwarename instead of tiltle
+ *970201 {1.64} Bernd Eckenfels : net-features.h support
+ *970203 {1.65} Bernd Eckenfels : "#define" in "#if",
+ * -H|-A additional to -t|-p
+ *970214 {1.66} Bernd Eckenfels : Fix optarg required for -H and -A
+ *970412 {1.67} Bernd Eckenfels : device=""; is default
+ *970514 {1.68} Bernd Eckenfels : -N and -D
+ *970517 {1.69} Bernd Eckenfels : usage() fixed
+ *970622 {1.70} Bernd Eckenfels : arp -d priv
+ *970106 {1.80} Bernd Eckenfels : new syntax without -D and with "dev <If>",
+ * ATF_MAGIC, ATF_DONTPUB support.
+ * Typo fix (Debian Bug#5728 Giuliano Procida)
+ *970803 {1.81} Bernd Eckenfels : removed junk comment line 1
+ *970925 {1.82} Bernd Eckenfels : include fix for libc6
+ *980213 (1.83) Phil Blundell: set ATF_COM on new entries
*980629 (1.84) Arnaldo Carvalho de Melo: gettext instead of catgets
*
*
- * 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.
+ * 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.
*/
#include <sys/types.h>
#include <sys/socket.h>
@@ -76,693 +76,690 @@
#define FEATURE_ARP
#include "lib/net-features.h"
-char *Release = RELEASE,
- *Version = "arp 1.84 (1998-06-29)";
-
-int opt_n = 0; /* do not resolve addresses */
-int opt_N = 0; /* use symbolic names */
-int opt_v = 0; /* debugging output flag */
-int opt_D = 0; /* HW-address is devicename */
-int opt_e = 0; /* 0=BSD output, 1=new linux */
-int opt_a = 0; /* all entries, substring match */
-struct aftype *ap; /* current address family */
-struct hwtype *hw; /* current hardware type */
-int sockfd=0; /* active socket descriptor */
-int hw_set = 0; /* flag if hw-type was set (-H) */
-char device[16]=""; /* current device */
+char *Release = RELEASE, *Version = "arp 1.84 (1998-06-29)";
+
+int opt_n = 0; /* do not resolve addresses */
+int opt_N = 0; /* use symbolic names */
+int opt_v = 0; /* debugging output flag */
+int opt_D = 0; /* HW-address is devicename */
+int opt_e = 0; /* 0=BSD output, 1=new linux */
+int opt_a = 0; /* all entries, substring match */
+struct aftype *ap; /* current address family */
+struct hwtype *hw; /* current hardware type */
+int sockfd = 0; /* active socket descriptor */
+int hw_set = 0; /* flag if hw-type was set (-H) */
+char device[16] = ""; /* current device */
static void usage(void);
/* Delete an entry from the ARP cache. */
-static int
-arp_del(char **args)
+static int arp_del(char **args)
{
- char host[128];
- struct arpreq req;
- struct sockaddr sa;
- int flags=0;
- int err;
+ char host[128];
+ struct arpreq req;
+ struct sockaddr sa;
+ int flags = 0;
+ int err;
- memset((char *) &req, 0, sizeof(req));
+ memset((char *) &req, 0, sizeof(req));
- /* Resolve the host name. */
- if (*args == NULL) {
+ /* Resolve the host name. */
+ if (*args == NULL) {
fprintf(stderr, _("arp: need host name\n"));
- return(-1);
- }
- host[(sizeof host)-1] = 0;
- strncpy(host, *args, (sizeof host)-1);
- if (ap->input(0, host, &sa) < 0) {
+ return (-1);
+ }
+ host[(sizeof host) - 1] = 0;
+ strncpy(host, *args, (sizeof host) - 1);
+ if (ap->input(0, host, &sa) < 0) {
ap->herror(host);
- return(-1);
- }
-
- /* If a host has more than one address, use the correct one! */
- memcpy((char *) &req.arp_pa, (char *) &sa, sizeof(struct sockaddr));
-
- if (hw_set)
- req.arp_ha.sa_family=hw->type;
-
- req.arp_flags=ATF_PERM;
- args++;
- while (*args != NULL) {
- if (opt_v) fprintf(stderr,"args=%s\n",*args);
- if (! strcmp(*args, "pub")) {
- flags |= 1;
- args++;
- continue;
+ return (-1);
+ }
+ /* If a host has more than one address, use the correct one! */
+ memcpy((char *) &req.arp_pa, (char *) &sa, sizeof(struct sockaddr));
+
+ if (hw_set)
+ req.arp_ha.sa_family = hw->type;
+
+ req.arp_flags = ATF_PERM;
+ args++;
+ while (*args != NULL) {
+ if (opt_v)
+ fprintf(stderr, "args=%s\n", *args);
+ if (!strcmp(*args, "pub")) {
+ flags |= 1;
+ args++;
+ continue;
}
- if (! strcmp(*args, "priv")) {
- flags |= 2;
- args++;
- continue;
+ if (!strcmp(*args, "priv")) {
+ flags |= 2;
+ args++;
+ continue;
}
- if (! strcmp(*args, "temp")) {
- req.arp_flags &= ~ATF_PERM;
- args++;
- continue;
+ if (!strcmp(*args, "temp")) {
+ req.arp_flags &= ~ATF_PERM;
+ args++;
+ continue;
}
- if (! strcmp(*args, "trail")) {
- req.arp_flags |= ATF_USETRAILERS;
- args++;
- continue;
+ if (!strcmp(*args, "trail")) {
+ req.arp_flags |= ATF_USETRAILERS;
+ args++;
+ continue;
}
- if (! strcmp(*args, "dontpub")) {
+ if (!strcmp(*args, "dontpub")) {
#ifdef HAVE_ATF_DONTPUB
- req.arp_flags |= ATF_DONTPUB;
+ req.arp_flags |= ATF_DONTPUB;
#else
- ENOSUPP("arp", "ATF_DONTPUB");
+ ENOSUPP("arp", "ATF_DONTPUB");
#endif
- args++;
- continue;
+ args++;
+ continue;
}
- if (! strcmp(*args, "auto")) {
+ if (!strcmp(*args, "auto")) {
#ifdef HAVE_ATF_MAGIC
- req.arp_flags |= ATF_MAGIC;
+ req.arp_flags |= ATF_MAGIC;
#else
- ENOSUPP("arp", "ATF_MAGIC");
+ ENOSUPP("arp", "ATF_MAGIC");
#endif
- args++;
- continue;
+ args++;
+ continue;
}
- if (! strcmp(*args, "dev")) {
- if (*++args == NULL) usage();
- strncpy(device,*args,sizeof(device)-1);
- device[sizeof(device)-1]='\0';
- args++;
- continue;
+ if (!strcmp(*args, "dev")) {
+ if (*++args == NULL)
+ usage();
+ strncpy(device, *args, sizeof(device) - 1);
+ device[sizeof(device) - 1] = '\0';
+ args++;
+ continue;
}
- if (! strcmp(*args, "netmask")) {
- if (*++args == NULL) usage();
- if (strcmp(*args,"255.255.255.255") != 0) {
- strcpy(host, *args);
- if (ap->input(0, host, &sa) < 0) {
- ap->herror(host);
- return(-1);
- }
- memcpy((char *) &req.arp_netmask, (char *) &sa,
- sizeof(struct sockaddr));
- req.arp_flags |= ATF_NETMASK;
- }
- args++;
- continue;
- }
- usage();
- }
- if (flags == 0)
- flags = 3;
-
- strcpy(req.arp_dev,device);
-
- err = -1;
-
- /* Call the kernel. */
- if (flags & 2) {
- if (opt_v) fprintf(stderr,"arp: SIOCDARP(nopub)\n");
- if ((err = ioctl(sockfd, SIOCDARP, &req) < 0)) {
- if (errno == ENXIO) {
- if (flags & 1)
- goto nopub;
- printf(_("No ARP entry for %s\n"), host);
- return(-1);
- }
- perror("SIOCDARP(priv)");
- return(-1);
- }
- }
- if ((flags & 1) && (err)) {
-nopub:
- req.arp_flags |= ATF_PUBL;
- if (opt_v) fprintf(stderr,"arp: SIOCDARP(pub)\n");
- if (ioctl(sockfd, SIOCDARP, &req) < 0) {
- if (errno == ENXIO) {
- printf(_("No ARP entry for %s\n"), host);
- return(-1);
+ if (!strcmp(*args, "netmask")) {
+ if (*++args == NULL)
+ usage();
+ if (strcmp(*args, "255.255.255.255") != 0) {
+ strcpy(host, *args);
+ if (ap->input(0, host, &sa) < 0) {
+ ap->herror(host);
+ return (-1);
}
- perror("SIOCDARP(pub)");
- return(-1);
- }
- }
-
- return(0);
+ memcpy((char *) &req.arp_netmask, (char *) &sa,
+ sizeof(struct sockaddr));
+ req.arp_flags |= ATF_NETMASK;
+ }
+ args++;
+ continue;
+ }
+ usage();
+ }
+ if (flags == 0)
+ flags = 3;
+
+ strcpy(req.arp_dev, device);
+
+ err = -1;
+
+ /* Call the kernel. */
+ if (flags & 2) {
+ if (opt_v)
+ fprintf(stderr, "arp: SIOCDARP(nopub)\n");
+ if ((err = ioctl(sockfd, SIOCDARP, &req) < 0)) {
+ if (errno == ENXIO) {
+ if (flags & 1)
+ goto nopub;
+ printf(_("No ARP entry for %s\n"), host);
+ return (-1);
+ }
+ perror("SIOCDARP(priv)");
+ return (-1);
+ }
+ }
+ if ((flags & 1) && (err)) {
+ nopub:
+ req.arp_flags |= ATF_PUBL;
+ if (opt_v)
+ fprintf(stderr, "arp: SIOCDARP(pub)\n");
+ if (ioctl(sockfd, SIOCDARP, &req) < 0) {
+ if (errno == ENXIO) {
+ printf(_("No ARP entry for %s\n"), host);
+ return (-1);
+ }
+ perror("SIOCDARP(pub)");
+ return (-1);
+ }
+ }
+ return (0);
}
/* Get the hardware address to a specified interface name */
-static int
-arp_getdevhw(char *ifname, struct sockaddr *sa, struct hwtype *hw)
+static int arp_getdevhw(char *ifname, struct sockaddr *sa, struct hwtype *hw)
{
- struct ifreq ifr;
- struct hwtype *xhw;
-
- strcpy(ifr.ifr_name, ifname);
- if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) < 0) {
- fprintf(stderr,"arp: cant get HW-Address for `%s': %s.\n", ifname, strerror(errno));
- return(-1);
- }
- if (hw && (ifr.ifr_hwaddr.sa_family!=hw->type)) {
- fprintf(stderr,"arp: protocol type missmatch.\n");
- return(-1);
- }
- memcpy((char *)sa, (char *)&(ifr.ifr_hwaddr), sizeof(struct sockaddr));
-
- if (opt_v) {
- if (!(xhw = get_hwntype(ifr.ifr_hwaddr.sa_family)) || (xhw->sprint==0)) {
- xhw = get_hwntype(-1);
- }
- fprintf(stderr, "arp: device `%s' has HW address %s `%s'.\n",ifname, xhw->name, xhw->sprint(&ifr.ifr_hwaddr));
- }
- return(0);
+ struct ifreq ifr;
+ struct hwtype *xhw;
+
+ strcpy(ifr.ifr_name, ifname);
+ if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) < 0) {
+ fprintf(stderr, "arp: cant get HW-Address for `%s': %s.\n", ifname, strerror(errno));
+ return (-1);
+ }
+ if (hw && (ifr.ifr_hwaddr.sa_family != hw->type)) {
+ fprintf(stderr, "arp: protocol type missmatch.\n");
+ return (-1);
+ }
+ memcpy((char *) sa, (char *) &(ifr.ifr_hwaddr), sizeof(struct sockaddr));
+
+ if (opt_v) {
+ if (!(xhw = get_hwntype(ifr.ifr_hwaddr.sa_family)) || (xhw->sprint == 0)) {
+ xhw = get_hwntype(-1);
+ }
+ fprintf(stderr, "arp: device `%s' has HW address %s `%s'.\n", ifname, xhw->name, xhw->sprint(&ifr.ifr_hwaddr));
+ }
+ return (0);
}
/* Set an entry in the ARP cache. */
-static int
-arp_set(char **args)
+static int arp_set(char **args)
{
- char host[128];
- struct arpreq req;
- struct sockaddr sa;
- int flags;
+ char host[128];
+ struct arpreq req;
+ struct sockaddr sa;
+ int flags;
- memset((char *) &req, 0, sizeof(req));
+ memset((char *) &req, 0, sizeof(req));
- /* Resolve the host name. */
- if (*args == NULL) {
+ /* Resolve the host name. */
+ if (*args == NULL) {
fprintf(stderr, _("arp: need host name\n"));
- return(-1);
- }
- host[(sizeof host)-1] = 0;
- strncpy(host, *args++, (sizeof host)-1);
- if (ap->input(0, host, &sa) < 0) {
+ return (-1);
+ }
+ host[(sizeof host) - 1] = 0;
+ strncpy(host, *args++, (sizeof host) - 1);
+ if (ap->input(0, host, &sa) < 0) {
ap->herror(host);
- return(-1);
- }
-
- /* If a host has more than one address, use the correct one! */
- memcpy((char *) &req.arp_pa, (char *) &sa, sizeof(struct sockaddr));
+ return (-1);
+ }
+ /* If a host has more than one address, use the correct one! */
+ memcpy((char *) &req.arp_pa, (char *) &sa, sizeof(struct sockaddr));
- /* Fetch the hardware address. */
- if (*args == NULL) {
+ /* Fetch the hardware address. */
+ if (*args == NULL) {
fprintf(stderr, _("arp: need hardware address\n"));
- return(-1);
- }
-
- if (opt_D) {
- if (arp_getdevhw(*args++, &req.arp_ha, hw_set?hw:NULL) < 0)
- return(-1);
- } else {
- if (hw->input(*args++, &req.arp_ha) < 0) {
- fprintf(stderr, _("arp: invalid hardware address\n"));
- return(-1);
+ return (-1);
}
- }
-
- /* Check out any modifiers. */
- flags = ATF_PERM | ATF_COM;
- while (*args != NULL) {
- if (! strcmp(*args, "temp")) {
- flags &= ~ATF_PERM;
- args++;
- continue;
+ if (opt_D) {
+ if (arp_getdevhw(*args++, &req.arp_ha, hw_set ? hw : NULL) < 0)
+ return (-1);
+ } else {
+ if (hw->input(*args++, &req.arp_ha) < 0) {
+ fprintf(stderr, _("arp: invalid hardware address\n"));
+ return (-1);
}
- if (! strcmp(*args, "pub")) {
- flags |= ATF_PUBL;
- args++;
- continue;
+ }
+
+ /* Check out any modifiers. */
+ flags = ATF_PERM | ATF_COM;
+ while (*args != NULL) {
+ if (!strcmp(*args, "temp")) {
+ flags &= ~ATF_PERM;
+ args++;
+ continue;
}
- if (! strcmp(*args, "priv")) {
- flags &= ~ATF_PUBL;
- args++;
- continue;
+ if (!strcmp(*args, "pub")) {
+ flags |= ATF_PUBL;
+ args++;
+ continue;
}
- if (! strcmp(*args, "trail")) {
- flags |= ATF_USETRAILERS;
- args++;
- continue;
+ if (!strcmp(*args, "priv")) {
+ flags &= ~ATF_PUBL;
+ args++;
+ continue;
+ }
+ if (!strcmp(*args, "trail")) {
+ flags |= ATF_USETRAILERS;
+ args++;
+ continue;
}
- if (! strcmp(*args, "dontpub")) {
+ if (!strcmp(*args, "dontpub")) {
#ifdef HAVE_ATF_DONTPUB
- flags |= ATF_DONTPUB;
+ flags |= ATF_DONTPUB;
#else
- ENOSUPP("arp", "ATF_DONTPUB");
+ ENOSUPP("arp", "ATF_DONTPUB");
#endif
- args++;
- continue;
+ args++;
+ continue;
}
-
- if (! strcmp(*args, "auto")) {
+ if (!strcmp(*args, "auto")) {
#ifdef HAVE_ATF_MAGIC
- flags |= ATF_MAGIC;
+ flags |= ATF_MAGIC;
#else
- ENOSUPP("arp", "ATF_MAGIC");
+ ENOSUPP("arp", "ATF_MAGIC");
#endif
- args++;
- continue;
+ args++;
+ continue;
}
- if (! strcmp(*args, "dev")) {
- if (*++args == NULL) usage();
- strncpy(device,*args,sizeof(device)-1);
- device[sizeof(device)-1]='\0';
- args++;
- continue;
+ if (!strcmp(*args, "dev")) {
+ if (*++args == NULL)
+ usage();
+ strncpy(device, *args, sizeof(device) - 1);
+ device[sizeof(device) - 1] = '\0';
+ args++;
+ continue;
}
-
- if (! strcmp(*args, "netmask")) {
- if (*++args == NULL) usage();
- if (strcmp(*args,"255.255.255.255") != 0) {
- strcpy(host, *args);
- if (ap->input(0, host, &sa) < 0) {
- ap->herror(host);
- return(-1);
- }
- memcpy((char *) &req.arp_netmask, (char *) &sa,
- sizeof(struct sockaddr));
- flags |= ATF_NETMASK;
- }
- args++;
- continue;
+ if (!strcmp(*args, "netmask")) {
+ if (*++args == NULL)
+ usage();
+ if (strcmp(*args, "255.255.255.255") != 0) {
+ strcpy(host, *args);
+ if (ap->input(0, host, &sa) < 0) {
+ ap->herror(host);
+ return (-1);
+ }
+ memcpy((char *) &req.arp_netmask, (char *) &sa,
+ sizeof(struct sockaddr));
+ flags |= ATF_NETMASK;
+ }
+ args++;
+ continue;
}
usage();
- }
+ }
- /* Fill in the remainder of the request. */
- req.arp_flags = flags;
+ /* Fill in the remainder of the request. */
+ req.arp_flags = flags;
- strcpy(req.arp_dev,device);
+ strcpy(req.arp_dev, device);
- /* Call the kernel. */
- if (opt_v) fprintf(stderr,"arp: SIOCSARP()\n");
- if (ioctl(sockfd, SIOCSARP, &req) < 0) {
+ /* Call the kernel. */
+ if (opt_v)
+ fprintf(stderr, "arp: SIOCSARP()\n");
+ if (ioctl(sockfd, SIOCSARP, &req) < 0) {
if (errno != EINVAL) {
- perror("SIOCSARP");
- return(-1);
+ perror("SIOCSARP");
+ return (-1);
}
- }
-
- return(0);
+ }
+ return (0);
}
/* Process an EtherFile */
-static int
-arp_file(char *name)
+static int arp_file(char *name)
{
- char buff[1024];
- char *sp, *args[32];
- int linenr, argc;
- FILE *fp;
+ char buff[1024];
+ char *sp, *args[32];
+ int linenr, argc;
+ FILE *fp;
- if ((fp = fopen(name, "r")) == NULL) {
+ if ((fp = fopen(name, "r")) == NULL) {
fprintf(stderr, _("arp: cannot open etherfile %s !\n"), name);
- return(-1);
- }
-
- /* Read the lines in the file. */
- linenr = 0;
- while (fgets(buff, sizeof(buff), fp) != (char *)NULL) {
+ return (-1);
+ }
+ /* Read the lines in the file. */
+ linenr = 0;
+ while (fgets(buff, sizeof(buff), fp) != (char *) NULL) {
linenr++;
- if (opt_v == 1) fprintf(stderr, ">> %s", buff);
- if ((sp = strchr(buff, '\n')) != (char *)NULL) *sp = '\0';
- if (buff[0] == '#' || buff[0] == '\0') continue;
+ if (opt_v == 1)
+ fprintf(stderr, ">> %s", buff);
+ if ((sp = strchr(buff, '\n')) != (char *) NULL)
+ *sp = '\0';
+ if (buff[0] == '#' || buff[0] == '\0')
+ continue;
argc = getargs(buff, args);
if (argc < 2) {
- fprintf(stderr, _("arp: format error on line %u of etherfile %s !\n"),
- linenr, name);
- continue;
+ fprintf(stderr, _("arp: format error on line %u of etherfile %s !\n"),
+ linenr, name);
+ continue;
}
-
if (arp_set(args) != 0)
- fprintf(stderr, _("arp: cannot set entry on line %u of etherfile %s !\n"),
- linenr, name);
- }
+ fprintf(stderr, _("arp: cannot set entry on line %u of etherfile %s !\n"),
+ linenr, name);
+ }
- (void) fclose(fp);
- return(0);
+ (void) fclose(fp);
+ return (0);
}
/* Print the contents of an ARP request block. */
-static void
-arp_disp_2(char *name,int type,int arp_flags,char *hwa,char *mask,char *dev)
+static void arp_disp_2(char *name, int type, int arp_flags, char *hwa, char *mask, char *dev)
{
- static int title = 0;
- struct hwtype *xhw;
- char flags[10];
-
- xhw = get_hwntype(type);
- if (xhw == NULL)
- xhw = get_hwtype(DFLT_HW);
-
- if (title++ == 0) {
- printf(_("Address\t\t\tHWtype\tHWaddress\t Flags Mask\t\t Iface\n"));
- }
- /* Setup the flags. */
- flags[0] = '\0';
- if (arp_flags & ATF_COM) strcat(flags, "C");
- if (arp_flags & ATF_PERM) strcat(flags, "M");
- if (arp_flags & ATF_PUBL) strcat(flags, "P");
+ static int title = 0;
+ struct hwtype *xhw;
+ char flags[10];
+
+ xhw = get_hwntype(type);
+ if (xhw == NULL)
+ xhw = get_hwtype(DFLT_HW);
+
+ if (title++ == 0) {
+ printf(_("Address\t\t\tHWtype\tHWaddress\t Flags Mask\t\t Iface\n"));
+ }
+ /* Setup the flags. */
+ flags[0] = '\0';
+ if (arp_flags & ATF_COM)
+ strcat(flags, "C");
+ if (arp_flags & ATF_PERM)
+ strcat(flags, "M");
+ if (arp_flags & ATF_PUBL)
+ strcat(flags, "P");
#ifdef HAVE_ATF_MAGIC
- if (arp_flags & ATF_MAGIC) strcat(flags, "A");
+ if (arp_flags & ATF_MAGIC)
+ strcat(flags, "A");
#endif
#ifdef HAVE_ATF_DONTPUB
- if (arp_flags & ATF_DONTPUB) strcat(flags, "!");
+ if (arp_flags & ATF_DONTPUB)
+ strcat(flags, "!");
#endif
- if (arp_flags & ATF_USETRAILERS) strcat(flags, "T");
+ if (arp_flags & ATF_USETRAILERS)
+ strcat(flags, "T");
- if (!(arp_flags & ATF_NETMASK)) mask="";
+ if (!(arp_flags & ATF_NETMASK))
+ mask = "";
- printf("%-23.23s\t", name);
+ printf("%-23.23s\t", name);
- if (!(arp_flags & ATF_COM)) {
+ if (!(arp_flags & ATF_COM)) {
if (arp_flags & ATF_PUBL)
- printf("%-8.8s%-20.20s","*","*");
+ printf("%-8.8s%-20.20s", "*", "*");
else
- printf("%-8.8s%-20.20s","","(incomplete)");
- } else {
+ printf("%-8.8s%-20.20s", "", "(incomplete)");
+ } else {
printf("%-8.8s%-20.20s", xhw->name, hwa);
- }
+ }
- printf("%-6.6s%-15.15s %s\n", flags,mask,dev);
+ printf("%-6.6s%-15.15s %s\n", flags, mask, dev);
}
/* Print the contents of an ARP request block. */
-static void
-arp_disp(char *name, char *ip, int type,int arp_flags,char *hwa,char *mask,char *dev)
+static void arp_disp(char *name, char *ip, int type, int arp_flags, char *hwa, char *mask, char *dev)
{
- struct hwtype *xhw;
-
- xhw = get_hwntype(type);
- if (xhw == NULL)
- xhw = get_hwtype(DFLT_HW);
-
+ struct hwtype *xhw;
+ xhw = get_hwntype(type);
+ if (xhw == NULL)
+ xhw = get_hwtype(DFLT_HW);
- printf("%s (%s) at ", name, ip);
+ printf("%s (%s) at ", name, ip);
- if (!(arp_flags & ATF_COM)) {
+ if (!(arp_flags & ATF_COM)) {
if (arp_flags & ATF_PUBL)
- printf("* ");
+ printf("* ");
else
- printf("<incomplete> ");
- } else {
+ printf("<incomplete> ");
+ } else {
printf("%s [%s] ", hwa, xhw->name);
- }
-
- if (arp_flags & ATF_NETMASK)
+ }
+
+ if (arp_flags & ATF_NETMASK)
printf("netmask %s ", mask);
-
- if (arp_flags & ATF_PERM) printf("PERM ");
- if (arp_flags & ATF_PUBL) printf("PUP ");
+
+ if (arp_flags & ATF_PERM)
+ printf("PERM ");
+ if (arp_flags & ATF_PUBL)
+ printf("PUP ");
#ifdef HAVE_ATF_MAGIC
- if (arp_flags & ATF_MAGIC) printf("AUTO ");
+ if (arp_flags & ATF_MAGIC)
+ printf("AUTO ");
#endif
#ifdef HAVE_ATF_DONTPUB
- if (arp_flags & ATF_DONTPUB) printf("DONTPUB ");
+ if (arp_flags & ATF_DONTPUB)
+ printf("DONTPUB ");
#endif
- if (arp_flags & ATF_USETRAILERS) printf("TRAIL ");
+ if (arp_flags & ATF_USETRAILERS)
+ printf("TRAIL ");
- printf("on %s\n", dev);
+ printf("on %s\n", dev);
}
/* Display the contents of the ARP cache in the kernel. */
-static int
-arp_show(char *name)
+static int arp_show(char *name)
{
- char host[100];
- struct sockaddr sa;
- char ip[100];
- char hwa[100];
- char mask[100];
- char line[200];
- char dev[100];
- int type,flags;
- FILE *fp;
- char *hostname;
- int num,entries=0,showed=0;
-
- host[0]='\0';
-
- if (name != NULL) {
- /* Resolve the host name. */
- host[(sizeof host)-1] = 0;
- strncpy(host, name, (sizeof host)-1);
- if (ap->input(0, host, &sa) < 0) {
- ap->herror(host);
- return(-1);
- }
- strcpy(host,ap->sprint(&sa, 1));
- }
-
- /* Open the PROCps kernel table. */
- if ((fp = fopen(_PATH_PROCNET_ARP, "r")) == NULL) {
+ char host[100];
+ struct sockaddr sa;
+ char ip[100];
+ char hwa[100];
+ char mask[100];
+ char line[200];
+ char dev[100];
+ int type, flags;
+ FILE *fp;
+ char *hostname;
+ int num, entries = 0, showed = 0;
+
+ host[0] = '\0';
+
+ if (name != NULL) {
+ /* Resolve the host name. */
+ host[(sizeof host) - 1] = 0;
+ strncpy(host, name, (sizeof host) - 1);
+ if (ap->input(0, host, &sa) < 0) {
+ ap->herror(host);
+ return (-1);
+ }
+ strcpy(host, ap->sprint(&sa, 1));
+ }
+ /* Open the PROCps kernel table. */
+ if ((fp = fopen(_PATH_PROCNET_ARP, "r")) == NULL) {
perror(_PATH_PROCNET_ARP);
- return(-1);
- }
-
- /* Bypass header -- read until newline */
- if (fgets(line, sizeof(line), fp) != (char *)NULL) {
- strcpy(mask,"-");
- strcpy(dev,"-");
+ return (-1);
+ }
+ /* Bypass header -- read until newline */
+ if (fgets(line, sizeof(line), fp) != (char *) NULL) {
+ strcpy(mask, "-");
+ strcpy(dev, "-");
/* Read the ARP cache entries. */
- for(;fgets(line,sizeof(line),fp);)
- {
- num=sscanf(line,"%s 0x%x 0x%x %100s %100s %100s\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[0] && strcmp(ip,host))
- continue;
-
- /* if the user specified device differs, skip it */
- if (device[0] && strcmp(dev,device))
- continue;
-
- showed++;
- /* This IS ugly but it works -be */
- if (opt_n)
- hostname="?";
- else {
- if (ap->input(0, ip,&sa) < 0)
- hostname=ip;
- else
- hostname = ap->sprint(&sa, opt_n | 0x8000);
- if (strcmp(hostname, ip)==0)
- hostname="?";
- }
+ for (; fgets(line, sizeof(line), fp);) {
+ num = sscanf(line, "%s 0x%x 0x%x %100s %100s %100s\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[0] && strcmp(ip, host))
+ continue;
- if (opt_e)
- arp_disp_2(hostname[0]=='?'?ip:hostname,type,flags,hwa,mask,dev);
+ /* if the user specified device differs, skip it */
+ if (device[0] && strcmp(dev, device))
+ continue;
+
+ showed++;
+ /* This IS ugly but it works -be */
+ if (opt_n)
+ hostname = "?";
+ else {
+ if (ap->input(0, ip, &sa) < 0)
+ hostname = ip;
else
- arp_disp(hostname,ip,type,flags,hwa,mask,dev);
+ hostname = ap->sprint(&sa, opt_n | 0x8000);
+ if (strcmp(hostname, ip) == 0)
+ hostname = "?";
+ }
+
+ if (opt_e)
+ arp_disp_2(hostname[0] == '?' ? ip : hostname, type, flags, hwa, mask, dev);
+ else
+ arp_disp(hostname, ip, type, flags, hwa, mask, dev);
+ }
+ }
+ if (opt_v)
+ printf(_("Entries: %d\tSkipped: %d\tFound: %d\n"), entries, entries - showed, showed);
+
+ if (!showed) {
+ if (host[0] && !opt_a)
+ printf("%s (%s) -- no entry\n", name, host);
+ else if (hw_set || host[0] || device[0]) {
+ printf(_("arp: in %d entries no match found.\n"), entries);
}
- }
- if (opt_v)
- printf(_("Entries: %d\tSkipped: %d\tFound: %d\n"),entries,entries-showed,showed);
-
- if (!showed) {
- if (host[0] && !opt_a)
- printf("%s (%s) -- no entry\n", name, host);
- else if (hw_set || host[0] || device[0]) {
- printf(_("arp: in %d entries no match found.\n"),entries);
- }
- }
- (void) fclose(fp);
- return(0);
+ }
+ (void) fclose(fp);
+ return (0);
}
-static void
-version(void)
+static void version(void)
{
- fprintf(stderr, "%s\n%s\n%s\n",Release,Version,Features);
- exit(-1);
+ fprintf(stderr, "%s\n%s\n%s\n", Release, Version, Features);
+ exit(-1);
}
-static void
-usage(void)
+static void usage(void)
{
- fprintf(stderr, _("Usage: arp [-vn] [-H type] [-i if] -a [hostname]\n"));
- fprintf(stderr, _(" arp [-v] [-i if] -d hostname [pub][nopub]\n"));
- fprintf(stderr, _(" arp [-v] [-H type] [-i if] -s hostname hw_addr [temp][nopub]\n"));
- fprintf(stderr, _(" arp [-v] [-H type] [-i if] -s hostname hw_addr [netmask nm] pub\n"));
- fprintf(stderr, _(" arp [-v] [-H type] [-i if] -Ds hostname if [netmask nm] pub\n"));
- fprintf(stderr, _(" arp [-vnD] [-H type] [-i if] -f filename\n"));
- exit(-1);
+ fprintf(stderr, _("Usage: arp [-vn] [-H type] [-i if] -a [hostname]\n"));
+ fprintf(stderr, _(" arp [-v] [-i if] -d hostname [pub][nopub]\n"));
+ fprintf(stderr, _(" arp [-v] [-H type] [-i if] -s hostname hw_addr [temp][nopub]\n"));
+ fprintf(stderr, _(" arp [-v] [-H type] [-i if] -s hostname hw_addr [netmask nm] pub\n"));
+ fprintf(stderr, _(" arp [-v] [-H type] [-i if] -Ds hostname if [netmask nm] pub\n"));
+ fprintf(stderr, _(" arp [-vnD] [-H type] [-i if] -f filename\n"));
+ exit(-1);
}
-int
-main(int argc, char **argv)
+int main(int argc, char **argv)
{
- int i, lop, what;
- struct option longopts[]=
- {
- {"verbose", 0, 0, 'v'},
- {"version", 0, 0, 'V'},
- {"all", 0, 0, 'a'},
- {"delete", 0, 0, 'd'},
- {"file", 0, 0, 'f'},
- {"numeric", 0, 0, 'n'},
- {"set", 0, 0, 's'},
- {"protocol", 1, 0, 'A'},
- {"hw-type", 1, 0, 'H'},
- {"device", 0, 0, 'i'},
- {"help", 0, 0, 'h'},
- {"use-device", 0, 0, 'D'},
- {"symbolic", 0, 0, 'N'},
- {NULL, 0, 0, 0}
- };
-
+ int i, lop, what;
+ struct option longopts[] =
+ {
+ {"verbose", 0, 0, 'v'},
+ {"version", 0, 0, 'V'},
+ {"all", 0, 0, 'a'},
+ {"delete", 0, 0, 'd'},
+ {"file", 0, 0, 'f'},
+ {"numeric", 0, 0, 'n'},
+ {"set", 0, 0, 's'},
+ {"protocol", 1, 0, 'A'},
+ {"hw-type", 1, 0, 'H'},
+ {"device", 0, 0, 'i'},
+ {"help", 0, 0, 'h'},
+ {"use-device", 0, 0, 'D'},
+ {"symbolic", 0, 0, 'N'},
+ {NULL, 0, 0, 0}
+ };
+
#if I18N
- bindtextdomain("net-tools", "/usr/share/locale");
- textdomain("net-tools");
+ bindtextdomain("net-tools", "/usr/share/locale");
+ textdomain("net-tools");
#endif
- /* Initialize variables... */
- if ((hw = get_hwtype(DFLT_HW)) == NULL) {
+ /* Initialize variables... */
+ if ((hw = get_hwtype(DFLT_HW)) == NULL) {
fprintf(stderr, _("%s: hardware type not supported!\n"), DFLT_HW);
- return(-1);
- }
- if ((ap = get_aftype(DFLT_AF)) == NULL) {
+ return (-1);
+ }
+ if ((ap = get_aftype(DFLT_AF)) == NULL) {
fprintf(stderr, _("%s: address family not supported!\n"), DFLT_AF);
- return(-1);
- }
- what = 0;
+ return (-1);
+ }
+ what = 0;
- /* Fetch the command-line arguments. */
- /* opterr = 0; */
- while ((i = getopt_long(argc, argv, "A:H:adfp:nsei:t:vh?DNV",longopts, &lop)) != EOF) switch(i) {
+ /* Fetch the command-line arguments. */
+ /* opterr = 0; */
+ while ((i = getopt_long(argc, argv, "A:H:adfp:nsei:t:vh?DNV", longopts, &lop)) != EOF)
+ switch (i) {
case 'a':
- what = 1;
- opt_a = 1;
- break;
+ what = 1;
+ opt_a = 1;
+ break;
case 'f':
- what = 2;
- break;
+ what = 2;
+ break;
case 'd':
- what = 3;
- break;
+ what = 3;
+ break;
case 's':
- what = 4;
- break;
+ what = 4;
+ break;
case 'e':
- opt_e = 1;
- break;
+ opt_e = 1;
+ break;
case 'n':
- opt_n = FLAG_NUM;
- break;
+ opt_n = FLAG_NUM;
+ break;
case 'D':
- opt_D = 1;
- break;
+ opt_D = 1;
+ break;
case 'N':
- opt_N = FLAG_SYM;
- fprintf(stderr,"arp: -N not yet supported.\n");
- break;
+ opt_N = FLAG_SYM;
+ fprintf(stderr, "arp: -N not yet supported.\n");
+ break;
case 'v':
- opt_v = 1;
- break;
+ opt_v = 1;
+ break;
case 'A':
case 'p':
- ap = get_aftype(optarg);
- if (ap == NULL) {
- fprintf(stderr, _("arp: %s: unknown address family.\n"),
- optarg);
- exit(-1);
- }
- break;
+ ap = get_aftype(optarg);
+ if (ap == NULL) {
+ fprintf(stderr, _("arp: %s: unknown address family.\n"),
+ optarg);
+ exit(-1);
+ }
+ break;
case 'H':
case 't':
- hw = get_hwtype(optarg);
- if (hw == NULL) {
- fprintf(stderr, _("arp: %s: unknown hardware type.\n"),
- optarg);
- exit(-1);
- }
- hw_set = 1;
- break;
+ hw = get_hwtype(optarg);
+ if (hw == NULL) {
+ fprintf(stderr, _("arp: %s: unknown hardware type.\n"),
+ optarg);
+ exit(-1);
+ }
+ hw_set = 1;
+ break;
case 'i':
- strncpy(device,optarg,sizeof(device)-1);
- device[sizeof(device)-1]='\0';
- break;
+ strncpy(device, optarg, sizeof(device) - 1);
+ device[sizeof(device) - 1] = '\0';
+ break;
case 'V':
- version();
+ version();
case '?':
case 'h':
default:
- usage();
- }
+ usage();
+ }
- if (ap->af != AF_INET) {
+ if (ap->af != AF_INET) {
fprintf(stderr, _("arp: %s: kernel only supports 'inet'.\n"),
- ap->name);
+ ap->name);
exit(-1);
- }
- if (hw->alen <= 0) {
+ }
+ if (hw->alen <= 0) {
fprintf(stderr, _("arp: %s: hardware type without ARP support.\n"),
- hw->name);
+ hw->name);
exit(-1);
- }
- if ((sockfd = socket(AF_INET,SOCK_DGRAM,0)) <0)
- {
- perror("socket");
- exit(-1);
- }
-
- /* Now see what we have to do here... */
- switch(what) {
- case 0:
- opt_e = 1;
- what = arp_show(argv[optind]);
- break;
-
- case 1: /* show an ARP entry in the cache */
- what = arp_show(argv[optind]);
- break;
-
- case 2: /* process an EtherFile */
- what = arp_file(argv[optind]);
- break;
-
- case 3: /* delete an ARP entry from the cache */
- what = arp_del(&argv[optind]);
- break;
-
- case 4: /* set an ARP entry in the cache */
- what = arp_set(&argv[optind]);
- break;
-
- default:
- usage();
- }
+ }
+ if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ perror("socket");
+ exit(-1);
+ }
+ /* Now see what we have to do here... */
+ switch (what) {
+ case 0:
+ opt_e = 1;
+ what = arp_show(argv[optind]);
+ break;
+
+ case 1: /* show an ARP entry in the cache */
+ what = arp_show(argv[optind]);
+ break;
+
+ case 2: /* process an EtherFile */
+ what = arp_file(argv[optind]);
+ break;
+
+ case 3: /* delete an ARP entry from the cache */
+ what = arp_del(&argv[optind]);
+ break;
+
+ case 4: /* set an ARP entry in the cache */
+ what = arp_set(&argv[optind]);
+ break;
+
+ default:
+ usage();
+ }
- exit(what);
+ exit(what);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 02:00:29 +0000