+/* vi: set sw=4 ts=4: */
/*
* iproute.c "ip route".
*
- * 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 the GPL v2 or later, see the file LICENSE in this tarball.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <arpa/inet.h>
-#include <linux/in_route.h>
-
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
#include "utils.h"
-#include "ip_common.h"
-
-#include "busybox.h"
#ifndef RTAX_RTTVAR
#define RTAX_RTTVAR RTAX_HOPS
#endif
-static struct
-{
+typedef struct filter_t {
int tb;
+ int flushed;
+ char *flushb;
int flushp;
int flushe;
struct rtnl_handle *rth;
inet_prefix mdst;
inet_prefix rsrc;
inet_prefix msrc;
-} filter;
+} filter_t;
+
+#define filter (*(filter_t*)&bb_common_bufsiz1)
+
+static int flush_update(void)
+{
+ if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
+ bb_perror_msg("failed to send flush request");
+ return -1;
+ }
+ filter.flushp = 0;
+ return 0;
+}
+
+static unsigned get_hz(void)
+{
+ static unsigned hz_internal;
+ FILE *fp;
+
+ if (hz_internal)
+ return hz_internal;
+
+ fp = fopen("/proc/net/psched", "r");
+ if (fp) {
+ unsigned nom, denom;
+
+ if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
+ if (nom == 1000000)
+ hz_internal = denom;
+ fclose(fp);
+ }
+ if (!hz_internal)
+ hz_internal = sysconf(_SC_CLK_TCK);
+ return hz_internal;
+}
-int print_route(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+static int print_route(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
+ struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
struct rtmsg *r = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr * tb[RTA_MAX+1];
char abuf[256];
+ inet_prefix dst;
+ inet_prefix src;
int host_len = -1;
SPRINT_BUF(b1);
-
+
if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
fprintf(stderr, "Not a route: %08x %08x %08x\n",
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
return 0;
}
+ if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
+ return 0;
len -= NLMSG_LENGTH(sizeof(*r));
- if (len < 0) {
- error_msg("wrong nlmsg len %d", len);
- return -1;
- }
+ if (len < 0)
+ bb_error_msg_and_die("wrong nlmsg len %d", len);
if (r->rtm_family == AF_INET6)
host_len = 128;
memset(tb, 0, sizeof(tb));
parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+ if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
+ return 0;
+ if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
+ inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
+ return 0;
+
+ if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
+ return 0;
+ if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
+ inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
+ return 0;
+
+ if (filter.flushb &&
+ r->rtm_family == AF_INET6 &&
+ r->rtm_dst_len == 0 &&
+ r->rtm_type == RTN_UNREACHABLE &&
+ tb[RTA_PRIORITY] &&
+ *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
+ return 0;
+
+ if (filter.flushb) {
+ struct nlmsghdr *fn;
+ if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+ if (flush_update())
+ bb_error_msg_and_die("flush");
+ }
+ fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+ memcpy(fn, n, n->nlmsg_len);
+ fn->nlmsg_type = RTM_DELROUTE;
+ fn->nlmsg_flags = NLM_F_REQUEST;
+ fn->nlmsg_seq = ++filter.rth->seq;
+ filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
+ filter.flushed++;
+ return 0;
+ }
+
if (n->nlmsg_type == RTM_DELROUTE) {
fprintf(fp, "Deleted ");
}
fprintf(fp, "from 0/%u ", r->rtm_src_len);
}
if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
- fprintf(fp, "via %s ",
+ fprintf(fp, "via %s ",
format_host(r->rtm_family,
RTA_PAYLOAD(tb[RTA_GATEWAY]),
RTA_DATA(tb[RTA_GATEWAY]),
/* Do not use format_host(). It is our local addr
and symbolic name will not be useful.
*/
- fprintf(fp, " src %s ",
+ fprintf(fp, " src %s ",
rt_addr_n2a(r->rtm_family,
RTA_PAYLOAD(tb[RTA_PREFSRC]),
RTA_DATA(tb[RTA_PREFSRC]),
abuf, sizeof(abuf)));
}
if (tb[RTA_PRIORITY]) {
- fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
+ fprintf(fp, " metric %d ", *(uint32_t*)RTA_DATA(tb[RTA_PRIORITY]));
}
if (r->rtm_family == AF_INET6) {
struct rta_cacheinfo *ci = NULL;
ci = RTA_DATA(tb[RTA_CACHEINFO]);
}
if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
- static int hz;
- if (!hz) {
- hz = get_hz();
- }
if (r->rtm_flags & RTM_F_CLONED) {
- fprintf(fp, "%s cache ", _SL_);
+ fprintf(fp, "%c cache ", _SL_);
}
if (ci->rta_expires) {
- fprintf(fp, " expires %dsec", ci->rta_expires/hz);
+ fprintf(fp, " expires %dsec", ci->rta_expires / get_hz());
}
if (ci->rta_error != 0) {
fprintf(fp, " error %d", ci->rta_error);
if (tb[RTA_IIF] && filter.iifmask != -1) {
fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
}
- fprintf(fp, "\n");
+ fputc('\n', fp);
fflush(fp);
return 0;
}
-int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
{
+ static const char keywords[] ALIGN1 =
+ "src\0""via\0""mtu\0""lock\0""protocol\0"USE_FEATURE_IP_RULE("table\0")
+ "dev\0""oif\0""to\0";
+ enum {
+ ARG_src,
+ ARG_via,
+ ARG_mtu, PARM_lock,
+ ARG_protocol,
+USE_FEATURE_IP_RULE(ARG_table,)
+ ARG_dev,
+ ARG_oif,
+ ARG_to
+ };
+ enum {
+ gw_ok = 1 << 0,
+ dst_ok = 1 << 1,
+ proto_ok = 1 << 2,
+ type_ok = 1 << 3
+ };
struct rtnl_handle rth;
struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
+ struct nlmsghdr n;
+ struct rtmsg r;
+ char buf[1024];
} req;
- char mxbuf[256];
+ char mxbuf[256];
struct rtattr * mxrta = (void*)mxbuf;
unsigned mxlock = 0;
- char *d = NULL;
- int gw_ok = 0;
- int dst_ok = 0;
- int proto_ok = 0;
- int type_ok = 0;
+ char *d = NULL;
+ smalluint ok = 0;
+ int arg;
memset(&req, 0, sizeof(req));
mxrta->rta_len = RTA_LENGTH(0);
while (argc > 0) {
- if (strcmp(*argv, "src") == 0) {
+ arg = index_in_substrings(keywords, *argv);
+ if (arg == ARG_src) {
inet_prefix addr;
NEXT_ARG();
get_addr(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC) {
+ if (req.r.rtm_family == AF_UNSPEC)
req.r.rtm_family = addr.family;
- }
addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
- } else if (strcmp(*argv, "via") == 0) {
+ } else if (arg == ARG_via) {
inet_prefix addr;
- gw_ok = 1;
+ ok |= gw_ok;
NEXT_ARG();
get_addr(&addr, *argv, req.r.rtm_family);
if (req.r.rtm_family == AF_UNSPEC) {
req.r.rtm_family = addr.family;
}
addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
- } else if (strcmp(*argv, "mtu") == 0) {
+ } else if (arg == ARG_mtu) {
unsigned mtu;
NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
+ if (index_in_strings(keywords, *argv) == PARM_lock) {
mxlock |= (1<<RTAX_MTU);
NEXT_ARG();
}
- if (get_unsigned(&mtu, *argv, 0)) {
- invarg("\"mtu\" value is invalid\n", *argv);
- }
+ if (get_unsigned(&mtu, *argv, 0))
+ invarg(*argv, "mtu");
rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
- } else if (matches(*argv, "protocol") == 0) {
- int prot;
+ } else if (arg == ARG_protocol) {
+ uint32_t prot;
NEXT_ARG();
if (rtnl_rtprot_a2n(&prot, *argv))
- invarg("\"protocol\" value is invalid\n", *argv);
+ invarg(*argv, "protocol");
req.r.rtm_protocol = prot;
- proto_ok =1;
- } else if (strcmp(*argv, "dev") == 0 ||
- strcmp(*argv, "oif") == 0) {
+ ok |= proto_ok;
+#if ENABLE_FEATURE_IP_RULE
+ } else if (arg == ARG_table) {
+ uint32_t tid;
+ NEXT_ARG();
+ if (rtnl_rttable_a2n(&tid, *argv))
+ invarg(*argv, "table");
+ req.r.rtm_table = tid;
+#endif
+ } else if (arg == ARG_dev || arg == ARG_oif) {
NEXT_ARG();
d = *argv;
} else {
int type;
inet_prefix dst;
- if (strcmp(*argv, "to") == 0) {
+ if (arg == ARG_to) {
NEXT_ARG();
}
- if ((**argv < '0' || **argv > '9') &&
- rtnl_rtntype_a2n(&type, *argv) == 0) {
+ if ((**argv < '0' || **argv > '9')
+ && rtnl_rtntype_a2n(&type, *argv) == 0) {
NEXT_ARG();
req.r.rtm_type = type;
- type_ok = 1;
+ ok |= type_ok;
}
- if (dst_ok) {
+ if (ok & dst_ok) {
duparg2("to", *argv);
}
get_prefix(&dst, *argv, req.r.rtm_family);
req.r.rtm_family = dst.family;
}
req.r.rtm_dst_len = dst.bitlen;
- dst_ok = 1;
+ ok |= dst_ok;
if (dst.bytelen) {
addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
}
argc--; argv++;
}
- if (rtnl_open(&rth, 0) < 0) {
- exit(1);
- }
+ xrtnl_open(&rth);
if (d) {
int idx;
ll_init_map(&rth);
if (d) {
- if ((idx = ll_name_to_index(d)) == 0) {
- error_msg("Cannot find device \"%s\"", d);
- return -1;
- }
+ idx = xll_name_to_index(d);
addattr32(&req.n, sizeof(req), RTA_OIF, idx);
}
}
addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
}
+ if (req.r.rtm_type == RTN_LOCAL || req.r.rtm_type == RTN_NAT)
+ req.r.rtm_scope = RT_SCOPE_HOST;
+ else if (req.r.rtm_type == RTN_BROADCAST ||
+ req.r.rtm_type == RTN_MULTICAST ||
+ req.r.rtm_type == RTN_ANYCAST)
+ req.r.rtm_scope = RT_SCOPE_LINK;
+ else if (req.r.rtm_type == RTN_UNICAST || req.r.rtm_type == RTN_UNSPEC) {
+ if (cmd == RTM_DELROUTE)
+ req.r.rtm_scope = RT_SCOPE_NOWHERE;
+ else if (!(ok & gw_ok))
+ req.r.rtm_scope = RT_SCOPE_LINK;
+ }
+
if (req.r.rtm_family == AF_UNSPEC) {
req.r.rtm_family = AF_INET;
}
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) {
- exit(2);
+ return 2;
}
return 0;
req.rtm.rtm_family = family;
req.rtm.rtm_flags |= RTM_F_CLONED;
- return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
+ return xsendto(rth->fd, (void*)&req, sizeof(req), (struct sockaddr*)&nladdr, sizeof(nladdr));
}
-static int iproute_list(int argc, char **argv)
+static void iproute_flush_cache(void)
+{
+ static const char fn[] ALIGN1 = "/proc/sys/net/ipv4/route/flush";
+ int flush_fd = open_or_warn(fn, O_WRONLY);
+
+ if (flush_fd < 0) {
+ return;
+ }
+
+ if (write(flush_fd, "-1", 2) < 2) {
+ bb_perror_msg("cannot flush routing cache");
+ return;
+ }
+ close(flush_fd);
+}
+
+static void iproute_reset_filter(void)
+{
+ memset(&filter, 0, sizeof(filter));
+ filter.mdst.bitlen = -1;
+ filter.msrc.bitlen = -1;
+}
+
+/* Return value becomes exitcode. It's okay to not return at all */
+static int iproute_list_or_flush(int argc, char **argv, int flush)
{
int do_ipv6 = preferred_family;
struct rtnl_handle rth;
char *id = NULL;
char *od = NULL;
-
+ static const char keywords[] ALIGN1 =
+ "protocol\0""all\0""dev\0""oif\0""iif\0""via\0""table\0""cache\0" /*all*/
+ "from\0""root\0""match\0""exact\0""to\0"/*root match exact*/;
+ enum {
+ ARG_proto, PARM_all,
+ ARG_dev,
+ ARG_oif,
+ ARG_iif,
+ ARG_via,
+ ARG_table, PARM_cache, /*PARM_all,*/
+ ARG_from, PARM_root, PARM_match, PARM_exact,
+ ARG_to /*PARM_root, PARM_match, PARM_exact*/
+ };
+ int arg, parm;
iproute_reset_filter();
filter.tb = RT_TABLE_MAIN;
+ if (flush && argc <= 0)
+ bb_error_msg_and_die(bb_msg_requires_arg, "\"ip route flush\"");
+
while (argc > 0) {
- if (matches(*argv, "protocol") == 0) {
- int prot = 0;
+ arg = index_in_substrings(keywords, *argv);
+ if (arg == ARG_proto) {
+ uint32_t prot = 0;
NEXT_ARG();
filter.protocolmask = -1;
if (rtnl_rtprot_a2n(&prot, *argv)) {
- if (strcmp(*argv, "all") != 0) {
- invarg("invalid \"protocol\"\n", *argv);
- }
+ if (index_in_strings(keywords, *argv) != PARM_all)
+ invarg(*argv, "protocol");
prot = 0;
filter.protocolmask = 0;
}
filter.protocol = prot;
- } else if (strcmp(*argv, "dev") == 0 ||
- strcmp(*argv, "oif") == 0) {
+ } else if (arg == ARG_dev || arg == ARG_oif) {
NEXT_ARG();
od = *argv;
- } else if (strcmp(*argv, "iif") == 0) {
+ } else if (arg == ARG_iif) {
NEXT_ARG();
id = *argv;
- } else if (matches(*argv, "from") == 0) {
+ } else if (arg == ARG_via) {
+ NEXT_ARG();
+ get_prefix(&filter.rvia, *argv, do_ipv6);
+ } else if (arg == ARG_table) {
NEXT_ARG();
- if (matches(*argv, "root") == 0) {
+ parm = index_in_substrings(keywords, *argv);
+ if (parm == PARM_cache)
+ filter.tb = -1;
+ else if (parm == PARM_all)
+ filter.tb = 0;
+ else
+ invarg(*argv, "table");
+ } else if (arg == ARG_from) {
+ NEXT_ARG();
+ parm = index_in_substrings(keywords, *argv);
+ if (parm == PARM_root) {
NEXT_ARG();
get_prefix(&filter.rsrc, *argv, do_ipv6);
- } else if (matches(*argv, "match") == 0) {
+ } else if (parm == PARM_match) {
NEXT_ARG();
get_prefix(&filter.msrc, *argv, do_ipv6);
} else {
- if (matches(*argv, "exact") == 0) {
+ if (parm == PARM_exact)
NEXT_ARG();
- }
get_prefix(&filter.msrc, *argv, do_ipv6);
filter.rsrc = filter.msrc;
}
} else {
- if (matches(*argv, "to") == 0) {
+ /* parm = arg; // would be more plausible, we reuse arg here */
+ if (arg == ARG_to) {
NEXT_ARG();
+ arg = index_in_substrings(keywords, *argv);
}
- if (matches(*argv, "root") == 0) {
+ if (arg == PARM_root) {
NEXT_ARG();
get_prefix(&filter.rdst, *argv, do_ipv6);
- } else if (matches(*argv, "match") == 0) {
+ } else if (arg == PARM_match) {
NEXT_ARG();
get_prefix(&filter.mdst, *argv, do_ipv6);
} else {
- if (matches(*argv, "exact") == 0) {
+ if (arg == PARM_exact)
NEXT_ARG();
- }
get_prefix(&filter.mdst, *argv, do_ipv6);
filter.rdst = filter.mdst;
}
}
- argc--; argv++;
+ argc--;
+ argv++;
}
if (do_ipv6 == AF_UNSPEC && filter.tb) {
do_ipv6 = AF_INET;
}
- if (rtnl_open(&rth, 0) < 0) {
- exit(1);
- }
+ xrtnl_open(&rth);
ll_init_map(&rth);
int idx;
if (id) {
- if ((idx = ll_name_to_index(id)) == 0) {
- error_msg("Cannot find device \"%s\"", id);
- return -1;
- }
+ idx = xll_name_to_index(id);
filter.iif = idx;
filter.iifmask = -1;
}
if (od) {
- if ((idx = ll_name_to_index(od)) == 0) {
- error_msg("Cannot find device \"%s\"", od);
- }
+ idx = xll_name_to_index(od);
filter.oif = idx;
filter.oifmask = -1;
}
}
- if (filter.tb != -1) {
- if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
- perror_msg_and_die("Cannot send dump request");
+ if (flush) {
+ char flushb[4096-512];
+
+ if (filter.tb == -1) {
+ if (do_ipv6 != AF_INET6)
+ iproute_flush_cache();
+ if (do_ipv6 == AF_INET)
+ return 0;
}
- } else {
- if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
- perror_msg_and_die("Cannot send dump request");
+
+ filter.flushb = flushb;
+ filter.flushp = 0;
+ filter.flushe = sizeof(flushb);
+ filter.rth = &rth;
+
+ for (;;) {
+ xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
+ filter.flushed = 0;
+ xrtnl_dump_filter(&rth, print_route, stdout);
+ if (filter.flushed == 0)
+ return 0;
+ if (flush_update())
+ return 1;
}
}
- if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
- error_msg_and_die"Dump terminated");
+ if (filter.tb != -1) {
+ xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
+ } else if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
+ bb_perror_msg_and_die("cannot send dump request");
}
+ xrtnl_dump_filter(&rth, print_route, stdout);
- exit(0);
+ return 0;
}
-int iproute_get(int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+static int iproute_get(int argc, char **argv)
{
struct rtnl_handle rth;
struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
+ struct nlmsghdr n;
+ struct rtmsg r;
+ char buf[1024];
} req;
- char *idev = NULL;
- char *odev = NULL;
- int connected = 0;
- int from_ok = 0;
+ char *idev = NULL;
+ char *odev = NULL;
+ bool connected = 0;
+ bool from_ok = 0;
+ static const char options[] ALIGN1 =
+ "from\0""iif\0""oif\0""dev\0""notify\0""connected\0""to\0";
memset(&req, 0, sizeof(req));
req.r.rtm_src_len = 0;
req.r.rtm_dst_len = 0;
req.r.rtm_tos = 0;
-
+
while (argc > 0) {
- if (matches(*argv, "from") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- from_ok = 1;
- get_prefix(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- if (addr.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
- req.r.rtm_src_len = addr.bitlen;
- } else if (matches(*argv, "iif") == 0) {
- NEXT_ARG();
- idev = *argv;
- } else if (matches(*argv, "oif") == 0 ||
- strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- odev = *argv;
- } else if (matches(*argv, "notify") == 0) {
- req.r.rtm_flags |= RTM_F_NOTIFY;
- } else if (matches(*argv, "connected") == 0) {
- connected = 1;
- } else {
- inet_prefix addr;
- if (strcmp(*argv, "to") == 0) {
+ switch (index_in_strings(options, *argv)) {
+ case 0: /* from */
+ {
+ inet_prefix addr;
NEXT_ARG();
+ from_ok = 1;
+ get_prefix(&addr, *argv, req.r.rtm_family);
+ if (req.r.rtm_family == AF_UNSPEC) {
+ req.r.rtm_family = addr.family;
+ }
+ if (addr.bytelen) {
+ addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
+ }
+ req.r.rtm_src_len = addr.bitlen;
+ break;
}
- get_prefix(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- if (addr.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
- req.r.rtm_dst_len = addr.bitlen;
+ case 1: /* iif */
+ NEXT_ARG();
+ idev = *argv;
+ break;
+ case 2: /* oif */
+ case 3: /* dev */
+ NEXT_ARG();
+ odev = *argv;
+ break;
+ case 4: /* notify */
+ req.r.rtm_flags |= RTM_F_NOTIFY;
+ break;
+ case 5: /* connected */
+ connected = 1;
+ break;
+ case 6: /* to */
+ NEXT_ARG();
+ default:
+ {
+ inet_prefix addr;
+ get_prefix(&addr, *argv, req.r.rtm_family);
+ if (req.r.rtm_family == AF_UNSPEC) {
+ req.r.rtm_family = addr.family;
+ }
+ if (addr.bytelen) {
+ addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
+ }
+ req.r.rtm_dst_len = addr.bitlen;
+ }
+ argc--; argv++;
}
- argc--; argv++;
}
if (req.r.rtm_dst_len == 0) {
- error_msg_and_die("need at least destination address");
+ bb_error_msg_and_die("need at least destination address");
}
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
+ xrtnl_open(&rth);
ll_init_map(&rth);
int idx;
if (idev) {
- if ((idx = ll_name_to_index(idev)) == 0) {
- error_msg("Cannot find device \"%s\"", idev);
- return -1;
- }
+ idx = xll_name_to_index(idev);
addattr32(&req.n, sizeof(req), RTA_IIF, idx);
}
if (odev) {
- if ((idx = ll_name_to_index(odev)) == 0) {
- error_msg("Cannot find device \"%s\"", odev);
- return -1;
- }
+ idx = xll_name_to_index(odev);
addattr32(&req.n, sizeof(req), RTA_OIF, idx);
}
}
}
if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) {
- exit(2);
+ return 2;
}
if (connected && !from_ok) {
int len = req.n.nlmsg_len;
struct rtattr * tb[RTA_MAX+1];
- if (print_route(NULL, &req.n, (void*)stdout) < 0) {
- error_msg_and_die("An error :-)");
- }
+ print_route(NULL, &req.n, (void*)stdout);
if (req.n.nlmsg_type != RTM_NEWROUTE) {
- error_msg("Not a route?");
- return -1;
+ bb_error_msg_and_die("not a route?");
}
len -= NLMSG_LENGTH(sizeof(*r));
if (len < 0) {
- error_msg("Wrong len %d", len);
- return -1;
+ bb_error_msg_and_die("wrong len %d", len);
}
memset(tb, 0, sizeof(tb));
tb[RTA_PREFSRC]->rta_type = RTA_SRC;
r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
} else if (!tb[RTA_SRC]) {
- error_msg("Failed to connect the route");
- return -1;
+ bb_error_msg_and_die("failed to connect the route");
}
if (!odev && tb[RTA_OIF]) {
tb[RTA_OIF]->rta_type = 0;
req.n.nlmsg_type = RTM_GETROUTE;
if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) {
- exit(2);
+ return 2;
}
}
-
- if (print_route(NULL, &req.n, (void*)stdout) < 0) {
- error_msg_and_die("An error :-)");
- }
-
- exit(0);
-}
-
-void iproute_reset_filter()
-{
- memset(&filter, 0, sizeof(filter));
- filter.mdst.bitlen = -1;
- filter.msrc.bitlen = -1;
+ print_route(NULL, &req.n, (void*)stdout);
+ return 0;
}
+/* Return value becomes exitcode. It's okay to not return at all */
int do_iproute(int argc, char **argv)
{
- if (argc < 1) {
- return iproute_list(0, NULL);
- }
-
- if (matches(*argv, "add") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
- argc-1, argv+1);
- }
- if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
- argc-1, argv+1);
- }
- if (matches(*argv, "replace") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
- argc-1, argv+1);
- }
- if (matches(*argv, "prepend") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
- argc-1, argv+1);
- }
- if (matches(*argv, "append") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
- argc-1, argv+1);
- }
- if (matches(*argv, "test") == 0) {
- return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
- argc-1, argv+1);
- }
- if (matches(*argv, "delete") == 0) {
- return iproute_modify(RTM_DELROUTE, 0,
- argc-1, argv+1);
- }
- if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
- || matches(*argv, "lst") == 0) {
- return iproute_list(argc-1, argv+1);
- }
- if (matches(*argv, "get") == 0) {
- return iproute_get(argc-1, argv+1);
- }
- error_msg_and_die("Command \"%s\" is unknown, try \"ip route help\".", *argv);
+ static const char ip_route_commands[] ALIGN1 =
+ /*0-3*/ "add\0""append\0""change\0""chg\0"
+ /*4-7*/ "delete\0""get\0""list\0""show\0"
+ /*8..*/ "prepend\0""replace\0""test\0""flush\0";
+ int command_num = 6;
+ unsigned flags = 0;
+ int cmd = RTM_NEWROUTE;
+
+ /* "Standard" 'ip r a' treats 'a' as 'add', not 'append' */
+ /* It probably means that it is using "first match" rule */
+ if (*argv) {
+ command_num = index_in_substrings(ip_route_commands, *argv);
+ }
+ switch (command_num) {
+ case 0: /* add */
+ flags = NLM_F_CREATE|NLM_F_EXCL;
+ break;
+ case 1: /* append */
+ flags = NLM_F_CREATE|NLM_F_APPEND;
+ break;
+ case 2: /* change */
+ case 3: /* chg */
+ flags = NLM_F_REPLACE;
+ break;
+ case 4: /* delete */
+ cmd = RTM_DELROUTE;
+ break;
+ case 5: /* get */
+ return iproute_get(argc-1, argv+1);
+ case 6: /* list */
+ case 7: /* show */
+ return iproute_list_or_flush(argc-1, argv+1, 0);
+ case 8: /* prepend */
+ flags = NLM_F_CREATE;
+ case 9: /* replace */
+ flags = NLM_F_CREATE|NLM_F_REPLACE;
+ case 10: /* test */
+ flags = NLM_F_EXCL;
+ case 11: /* flush */
+ return iproute_list_or_flush(argc-1, argv+1, 1);
+ default:
+ bb_error_msg_and_die("unknown command %s", *argv);
+ }
+
+ return iproute_modify(cmd, flags, argc-1, argv+1);
}
-
projects / oweals / busybox.git / blobdiff