+/* vi: set sw=4 ts=4: */
/* route
*
* Similar to the standard Unix route, but with only the necessary
* Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* (derived from FvK's 'route.c 1.70 01/04/94')
*
- * 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.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
- * $Id: route.c,v 1.24 2004/03/10 07:42:38 mjn3 Exp $
*
* displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru>
* adjustments by Larry Doolittle <LRDoolittle@lbl.gov>
* remove ridiculous amounts of bloat.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
#include <net/route.h>
#include <net/if.h>
-#include "busybox.h"
+
+#include "libbb.h"
#include "inet_common.h"
+
#ifndef RTF_UP
/* Keep this in sync with /usr/src/linux/include/linux/route.h */
#define RTF_UP 0x0001 /* route usable */
#define RTF_REJECT 0x0200 /* Reject route */
#endif
-#if defined (SIOCADDRTOLD) || defined (RTF_IRTT) /* route */
+#if defined(SIOCADDRTOLD) || defined(RTF_IRTT) /* route */
#define HAVE_NEW_ADDRT 1
#endif
#endif
/* The RTACTION entries must agree with tbl_verb[] below! */
-#define RTACTION_ADD 1
-#define RTACTION_DEL 2
+#define RTACTION_ADD 1
+#define RTACTION_DEL 2
/* For the various tbl_*[] arrays, the 1st byte is the offset to
* the next entry and the 2nd byte is return value. */
-#define NET_FLAG 1
-#define HOST_FLAG 2
+#define NET_FLAG 1
+#define HOST_FLAG 2
/* We remap '-' to '#' to avoid problems with getopt. */
-static const char tbl_hash_net_host[] =
+static const char tbl_hash_net_host[] ALIGN1 =
"\007\001#net\0"
-/* "\010\002#host\0" */
+/* "\010\002#host\0" */
"\007\002#host" /* Since last, we can save a byte. */
;
-#define KW_TAKES_ARG 020
-#define KW_SETS_FLAG 040
+#define KW_TAKES_ARG 020
+#define KW_SETS_FLAG 040
-#define KW_IPVx_METRIC 020
-#define KW_IPVx_NETMASK 021
-#define KW_IPVx_GATEWAY 022
-#define KW_IPVx_MSS 023
-#define KW_IPVx_WINDOW 024
-#define KW_IPVx_IRTT 025
-#define KW_IPVx_DEVICE 026
+#define KW_IPVx_METRIC 020
+#define KW_IPVx_NETMASK 021
+#define KW_IPVx_GATEWAY 022
+#define KW_IPVx_MSS 023
+#define KW_IPVx_WINDOW 024
+#define KW_IPVx_IRTT 025
+#define KW_IPVx_DEVICE 026
-#define KW_IPVx_FLAG_ONLY 040
-#define KW_IPVx_REJECT 040
-#define KW_IPVx_MOD 041
-#define KW_IPVx_DYN 042
-#define KW_IPVx_REINSTATE 043
+#define KW_IPVx_FLAG_ONLY 040
+#define KW_IPVx_REJECT 040
+#define KW_IPVx_MOD 041
+#define KW_IPVx_DYN 042
+#define KW_IPVx_REINSTATE 043
-static const char tbl_ipvx[] =
+static const char tbl_ipvx[] ALIGN1 =
/* 020 is the "takes an arg" bit */
#if HAVE_NEW_ADDRT
"\011\020metric\0"
#endif
"\006\041mod\0"
"\006\042dyn\0"
-/* "\014\043reinstate\0" */
+/* "\014\043reinstate\0" */
"\013\043reinstate" /* Since last, we can save a byte. */
;
static void INET_setroute(int action, char **args)
{
struct rtentry rt;
- const char *netmask;
+ const char *netmask = NULL;
int skfd, isnet, xflag;
- assert((action == RTACTION_ADD) || (action == RTACTION_DEL));
-
/* Grab the -net or -host options. Remember they were transformed. */
xflag = kw_lookup(tbl_hash_net_host, &args);
}
/* Clean out the RTREQ structure. */
- memset((char *) &rt, 0, sizeof(struct rtentry));
+ memset(&rt, 0, sizeof(rt));
{
const char *target = *args++;
+ char *prefix;
+
+ /* recognize x.x.x.x/mask format. */
+ prefix = strchr(target, '/');
+ if (prefix) {
+ int prefix_len;
+ prefix_len = xatoul_range(prefix+1, 0, 32);
+ mask_in_addr(rt) = htonl( ~ (0xffffffffUL >> prefix_len));
+ *prefix = '\0';
+#if HAVE_NEW_ADDRT
+ rt.rt_genmask.sa_family = AF_INET;
+#endif
+ } else {
+ /* Default netmask. */
+ netmask = bb_str_default;
+ }
/* Prefer hostname lookup is -host flag (xflag==1) was given. */
- isnet = INET_resolve(target, (struct sockaddr_in *) &rt.rt_dst,
+ isnet = INET_resolve(target, (struct sockaddr_in *) &rt.rt_dst,
(xflag & HOST_FLAG));
if (isnet < 0) {
bb_error_msg_and_die("resolving %s", target);
}
-
+ if (prefix) {
+ /* do not destroy prefix for process args */
+ *prefix = '/';
+ }
}
if (xflag) { /* Reinit isnet if -net or -host was specified. */
/* Fill in the other fields. */
rt.rt_flags = ((isnet) ? RTF_UP : (RTF_UP | RTF_HOST));
- netmask = bb_INET_default;
-
while (*args) {
int k = kw_lookup(tbl_ipvx, &args);
const char *args_m1 = args[-1];
-
+
if (k & KW_IPVx_FLAG_ONLY) {
rt.rt_flags |= flags_ipvx[k & 3];
continue;
#if HAVE_NEW_ADDRT
if (k == KW_IPVx_METRIC) {
- rt.rt_metric = bb_xgetularg10(args_m1) + 1;
+ rt.rt_metric = xatoul(args_m1) + 1;
continue;
}
#endif
if (k == KW_IPVx_MSS) { /* Check valid MSS bounds. */
rt.rt_flags |= RTF_MSS;
- rt.rt_mss = bb_xgetularg10_bnd(args_m1, 64, 32768);
+ rt.rt_mss = xatoul_range(args_m1, 64, 32768);
continue;
}
if (k == KW_IPVx_WINDOW) { /* Check valid window bounds. */
rt.rt_flags |= RTF_WINDOW;
- rt.rt_window = bb_xgetularg10_bnd(args_m1, 128, INT_MAX);
+ rt.rt_window = xatoul_range(args_m1, 128, INT_MAX);
continue;
}
#ifdef RTF_IRTT
if (k == KW_IPVx_IRTT) {
rt.rt_flags |= RTF_IRTT;
- rt.rt_irtt = bb_xgetularg10(args_m1);
+ rt.rt_irtt = xatoul(args_m1);
rt.rt_irtt *= (sysconf(_SC_CLK_TCK) / 100); /* FIXME */
#if 0 /* FIXME: do we need to check anything of this? */
if (rt.rt_irtt < 1 || rt.rt_irtt > (120 * HZ)) {
/* Device is special in that it can be the last arg specified
* and doesn't requre the dev/device keyword in that case. */
if (!rt.rt_dev && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) {
- rt.rt_dev = (char *) args_m1;
+ /* Don't use args_m1 here since args may have changed! */
+ rt.rt_dev = args[-1];
continue;
}
#ifdef RTF_REJECT
if ((rt.rt_flags & RTF_REJECT) && !rt.rt_dev) {
- rt.rt_dev = "lo";
+ rt.rt_dev = (char*)"lo";
}
#endif
}
/* Create a socket to the INET kernel. */
- if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- bb_perror_msg_and_die("socket");
- }
+ skfd = xsocket(AF_INET, SOCK_DGRAM, 0);
- if (ioctl(skfd, ((action==RTACTION_ADD) ? SIOCADDRT : SIOCDELRT), &rt)<0) {
- bb_perror_msg_and_die("SIOC[ADD|DEL]RT");
- }
+ if (action == RTACTION_ADD)
+ xioctl(skfd, SIOCADDRT, &rt);
+ else
+ xioctl(skfd, SIOCDELRT, &rt);
- /* Don't bother closing, as we're exiting after we return anyway. */
- /* close(skfd); */
+ if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
}
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
static void INET6_setroute(int action, char **args)
{
int prefix_len, skfd;
const char *devname;
- assert((action == RTACTION_ADD) || (action == RTACTION_DEL));
-
- {
/* We know args isn't NULL from the check in route_main. */
const char *target = *args++;
- if (strcmp(target, "default") == 0) {
+ if (strcmp(target, bb_str_default) == 0) {
prefix_len = 0;
memset(&sa6, 0, sizeof(sa6));
} else {
char *cp;
- if ((cp = strchr(target, '/'))) { /* Yes... const to non is ok. */
- *cp = 0;
- prefix_len = bb_xgetularg10_bnd(cp+1, 0, 128);
+ cp = strchr(target, '/'); /* Yes... const to non is ok. */
+ if (cp) {
+ *cp = '\0';
+ prefix_len = xatoul_range(cp + 1, 0, 128);
} else {
prefix_len = 128;
}
bb_error_msg_and_die("resolving %s", target);
}
}
- }
/* Clean out the RTREQ structure. */
- memset((char *) &rt, 0, sizeof(struct in6_rtmsg));
+ memset(&rt, 0, sizeof(rt));
memcpy(&rt.rtmsg_dst, sa6.sin6_addr.s6_addr, sizeof(struct in6_addr));
}
if (k == KW_IPVx_METRIC) {
- rt.rtmsg_metric = bb_xgetularg10(args_m1);
+ rt.rtmsg_metric = xatoul(args_m1);
continue;
}
/* Device is special in that it can be the last arg specified
* and doesn't requre the dev/device keyword in that case. */
if (!devname && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) {
- devname = args_m1;
+ /* Don't use args_m1 here since args may have changed! */
+ devname = args[-1];
continue;
}
}
/* Create a socket to the INET6 kernel. */
- if ((skfd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- bb_perror_msg_and_die("socket");
- }
+ skfd = xsocket(AF_INET6, SOCK_DGRAM, 0);
rt.rtmsg_ifindex = 0;
if (devname) {
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, devname);
-
- if (ioctl(skfd, SIOGIFINDEX, &ifr) < 0) {
- bb_perror_msg_and_die("SIOGIFINDEX");
- }
+ strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
+ xioctl(skfd, SIOGIFINDEX, &ifr);
rt.rtmsg_ifindex = ifr.ifr_ifindex;
}
/* Tell the kernel to accept this route. */
- if (ioctl(skfd, ((action==RTACTION_ADD) ? SIOCADDRT : SIOCDELRT), &rt)<0) {
- bb_perror_msg_and_die("SIOC[ADD|DEL]RT");
- }
+ if (action == RTACTION_ADD)
+ xioctl(skfd, SIOCADDRT, &rt);
+ else
+ xioctl(skfd, SIOCDELRT, &rt);
- /* Don't bother closing, as we're exiting after we return anyway. */
- /* close(skfd); */
+ if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
}
#endif
-static const unsigned int flagvals[] = { /* Must agree with flagchars[]. */
+static const unsigned flagvals[] = { /* Must agree with flagchars[]. */
RTF_GATEWAY,
RTF_HOST,
RTF_REINSTATE,
RTF_DYNAMIC,
RTF_MODIFIED,
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
RTF_DEFAULT,
RTF_ADDRCONF,
RTF_CACHE
#define IPV4_MASK (RTF_GATEWAY|RTF_HOST|RTF_REINSTATE|RTF_DYNAMIC|RTF_MODIFIED)
#define IPV6_MASK (RTF_GATEWAY|RTF_HOST|RTF_DEFAULT|RTF_ADDRCONF|RTF_CACHE)
-static const char flagchars[] = /* Must agree with flagvals[]. */
+/* Must agree with flagvals[]. */
+static const char flagchars[] ALIGN1 =
"GHRDM"
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
"DAC"
#endif
;
-static
-#ifndef CONFIG_FEATURE_IPV6
-__inline
-#endif
-void set_flags(char *flagstr, int flags)
+static void set_flags(char *flagstr, int flags)
{
int i;
*flagstr++ = 'U';
- for (i=0 ; (*flagstr = flagchars[i]) != 0 ; i++) {
+ for (i = 0; (*flagstr = flagchars[i]) != 0; i++) {
if (flags & flagvals[i]) {
++flagstr;
}
}
}
-void displayroutes(int noresolve, int netstatfmt)
+/* also used in netstat */
+void FAST_FUNC bb_displayroutes(int noresolve, int netstatfmt)
{
- char devname[64], flags[16], sdest[16], sgw[16];
- unsigned long int d, g, m;
+ char devname[64], flags[16], *sdest, *sgw;
+ unsigned long d, g, m;
int flgs, ref, use, metric, mtu, win, ir;
struct sockaddr_in s_addr;
struct in_addr mask;
- FILE *fp = bb_xfopen("/proc/net/route", "r");
+ FILE *fp = xfopen("/proc/net/route", "r");
- bb_printf("Kernel IP routing table\n"
- "Destination Gateway Genmask"
- " Flags %s Iface\n",
- netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
+ printf("Kernel IP routing table\n"
+ "Destination Gateway Genmask Flags %s Iface\n",
+ netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */
goto ERROR; /* Empty or missing line, or read error. */
if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
break;
}
- ERROR:
+ ERROR:
bb_error_msg_and_die("fscanf");
}
memset(&s_addr, 0, sizeof(struct sockaddr_in));
s_addr.sin_family = AF_INET;
s_addr.sin_addr.s_addr = d;
- INET_rresolve(sdest, sizeof(sdest), &s_addr,
- (noresolve | 0x8000), m); /* Default instead of *. */
-
+ sdest = INET_rresolve(&s_addr, (noresolve | 0x8000), m); /* 'default' instead of '*' */
s_addr.sin_addr.s_addr = g;
- INET_rresolve(sgw, sizeof(sgw), &s_addr,
- (noresolve | 0x4000), m); /* Host instead of net. */
-
+ sgw = INET_rresolve(&s_addr, (noresolve | 0x4000), m); /* Host instead of net */
mask.s_addr = m;
- bb_printf("%-16s%-16s%-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
+ /* "%15.15s" truncates hostnames, do we really want that? */
+ printf("%-15.15s %-15.15s %-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
+ free(sdest);
+ free(sgw);
if (netstatfmt) {
- bb_printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
+ printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
} else {
- bb_printf("%-6d %-2d %7d %s\n", metric, ref, use, devname);
+ printf("%-6d %-2d %7d %s\n", metric, ref, use, devname);
}
}
}
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
-static void INET6_displayroutes(int noresolve)
+static void INET6_displayroutes(void)
{
- char addr6[128], naddr6[128];
+ char addr6[128], *naddr6;
/* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses.
* We read the non-delimited strings into the tail of the buffer
* using fscanf and then modify the buffer by shifting forward
int iflags, metric, refcnt, use, prefix_len, slen;
struct sockaddr_in6 snaddr6;
- FILE *fp = bb_xfopen("/proc/net/ipv6_route", "r");
+ FILE *fp = xfopen("/proc/net/ipv6_route", "r");
- bb_printf("Kernel IPv6 routing table\n%-44s%-40s"
+ printf("Kernel IPv6 routing table\n%-44s%-40s"
"Flags Metric Ref Use Iface\n",
"Destination", "Next Hop");
if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
break;
}
- ERROR:
+ ERROR:
bb_error_msg_and_die("fscanf");
}
do {
if (!*p) {
- if (i==40) { /* nul terminator for 1st address? */
+ if (i == 40) { /* nul terminator for 1st address? */
addr6x[39] = 0; /* Fixup... need 0 instead of ':'. */
++p; /* Skip and continue. */
continue;
goto ERROR;
}
addr6x[i++] = *p++;
- if (!((i+1)%5)) {
+ if (!((i+1) % 5)) {
addr6x[i++] = ':';
}
} while (i < 40+28+7);
inet_pton(AF_INET6, addr6x + r,
(struct sockaddr *) &snaddr6.sin6_addr);
snaddr6.sin6_family = AF_INET6;
- INET6_rresolve(naddr6, sizeof(naddr6),
- (struct sockaddr_in6 *) &snaddr6,
-#if 0
- (noresolve | 0x8000) /* Default instead of *. */
-#else
+ naddr6 = INET6_rresolve((struct sockaddr_in6 *) &snaddr6,
0x0fff /* Apparently, upstream never resolves. */
-#endif
);
if (!r) { /* 1st pass */
snprintf(addr6, sizeof(addr6), "%s/%d", naddr6, prefix_len);
r += 40;
+ free(naddr6);
} else { /* 2nd pass */
/* Print the info. */
- bb_printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n",
- addr6, naddr6, flags, metric, refcnt, use, iface);
+ printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n",
+ addr6, naddr6, flags, metric, refcnt, use, iface);
+ free(naddr6);
break;
}
} while (1);
#endif
-#define ROUTE_OPT_A 0x01
-#define ROUTE_OPT_n 0x02
-#define ROUTE_OPT_e 0x04
-#define ROUTE_OPT_INET6 0x08 /* Not an actual option. See below. */
+#define ROUTE_OPT_A 0x01
+#define ROUTE_OPT_n 0x02
+#define ROUTE_OPT_e 0x04
+#define ROUTE_OPT_INET6 0x08 /* Not an actual option. See below. */
/* 1st byte is offset to next entry offset. 2nd byte is return value. */
-static const char tbl_verb[] = /* 2nd byte matches RTACTION_* code */
+/* 2nd byte matches RTACTION_* code */
+static const char tbl_verb[] ALIGN1 =
"\006\001add\0"
"\006\002del\0"
-/* "\011\002delete\0" */
- "\010\002delete" /* Since last, we can save a byte. */
+/* "\011\002delete\0" */
+ "\010\002delete" /* Since it's last, we can save a byte. */
;
-int route_main(int argc, char **argv)
+int route_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int route_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
- unsigned long opt;
+ unsigned opt;
int what;
char *family;
+ char **p;
/* First, remap '-net' and '-host' to avoid getopt problems. */
- {
- char **p = argv;
-
- while (*++p) {
- if ((strcmp(*p, "-net") == 0) || (strcmp(*p, "-host") == 0)) {
- p[0][0] = '#';
- }
+ p = argv;
+ while (*++p) {
+ if (strcmp(*p, "-net") == 0 || strcmp(*p, "-host") == 0) {
+ p[0][0] = '#';
}
- }
+ }
- opt = bb_getopt_ulflags(argc, argv, "A:ne", &family);
+ opt = getopt32(argv, "A:ne", &family);
- if ((opt & ROUTE_OPT_A) && strcmp(family, "inet")) {
-#ifdef CONFIG_FEATURE_IPV6
+ if ((opt & ROUTE_OPT_A) && strcmp(family, "inet") != 0) {
+#if ENABLE_FEATURE_IPV6
if (strcmp(family, "inet6") == 0) {
opt |= ROUTE_OPT_INET6; /* Set flag for ipv6. */
} else
/* No more args means display the routing table. */
if (!*argv) {
int noresolve = (opt & ROUTE_OPT_n) ? 0x0fff : 0;
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
if (opt & ROUTE_OPT_INET6)
- INET6_displayroutes(noresolve);
+ INET6_displayroutes();
else
#endif
- displayroutes(noresolve, opt & ROUTE_OPT_e);
+ bb_displayroutes(noresolve, opt & ROUTE_OPT_e);
- bb_xferror_stdout();
- bb_fflush_stdout_and_exit(EXIT_SUCCESS);
+ fflush_stdout_and_exit(EXIT_SUCCESS);
}
/* Check verb. At the moment, must be add, del, or delete. */
bb_show_usage();
}
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
if (opt & ROUTE_OPT_INET6)
INET6_setroute(what, argv);
else
projects / oweals / busybox.git / blobdiff