/* vi: set sw=4 ts=4: */
/*
- * iprule.c "ip rule".
- *
- * 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.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * 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.
*
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* Changes:
*
- * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
- * initially integrated into busybox by Bernhard Fischer
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ * initially integrated into busybox by Bernhard Reutner-Fischer
*/
-#include "libbb.h"
-#include <syslog.h>
-#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
#include "utils.h"
-#include "ip_common.h"
+
/*
static void usage(void) __attribute__((noreturn));
exit(-1);
}
*/
-static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
- struct nlmsghdr *n, void *arg)
+
+static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
+ struct nlmsghdr *n, void *arg UNUSED_PARAM)
{
- FILE *fp = (FILE*)arg;
struct rtmsg *r = NLMSG_DATA(n);
int len = n->nlmsg_len;
int host_len = -1;
else if (r->rtm_family == AF_IPX)
host_len = 80;
*/
- if (tb[RTA_PRIORITY])
- fprintf(fp, "%u:\t", *(unsigned*)RTA_DATA(tb[RTA_PRIORITY]));
- else
- fprintf(fp, "0:\t");
-
- fprintf(fp, "from ");
+ printf("%u:\t", tb[RTA_PRIORITY] ?
+ *(unsigned*)RTA_DATA(tb[RTA_PRIORITY])
+ : 0);
+ printf("from ");
if (tb[RTA_SRC]) {
if (r->rtm_src_len != host_len) {
- fprintf(fp, "%s/%u", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_SRC]),
- RTA_DATA(tb[RTA_SRC]),
- abuf, sizeof(abuf)),
+ printf("%s/%u", rt_addr_n2a(r->rtm_family,
+ RTA_DATA(tb[RTA_SRC]),
+ abuf, sizeof(abuf)),
r->rtm_src_len
- );
+ );
} else {
- fprintf(fp, "%s", format_host(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_SRC]),
- RTA_DATA(tb[RTA_SRC]),
- abuf, sizeof(abuf))
- );
+ fputs(format_host(r->rtm_family,
+ RTA_PAYLOAD(tb[RTA_SRC]),
+ RTA_DATA(tb[RTA_SRC]),
+ abuf, sizeof(abuf)),
+ stdout
+ );
}
} else if (r->rtm_src_len) {
- fprintf(fp, "0/%d", r->rtm_src_len);
+ printf("0/%d", r->rtm_src_len);
} else {
- fprintf(fp, "all");
+ printf("all");
}
- fprintf(fp, " ");
+ bb_putchar(' ');
if (tb[RTA_DST]) {
if (r->rtm_dst_len != host_len) {
- fprintf(fp, "to %s/%u ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_DST]),
+ printf("to %s/%u ", rt_addr_n2a(r->rtm_family,
RTA_DATA(tb[RTA_DST]),
abuf, sizeof(abuf)),
r->rtm_dst_len
);
} else {
- fprintf(fp, "to %s ", format_host(r->rtm_family,
+ printf("to %s ", format_host(r->rtm_family,
RTA_PAYLOAD(tb[RTA_DST]),
RTA_DATA(tb[RTA_DST]),
abuf, sizeof(abuf)));
}
} else if (r->rtm_dst_len) {
- fprintf(fp, "to 0/%d ", r->rtm_dst_len);
+ printf("to 0/%d ", r->rtm_dst_len);
}
if (r->rtm_tos) {
- fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
+ printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1));
}
if (tb[RTA_PROTOINFO]) {
- fprintf(fp, "fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
+ printf("fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
}
if (tb[RTA_IIF]) {
- fprintf(fp, "iif %s ", (char*)RTA_DATA(tb[RTA_IIF]));
+ printf("iif %s ", (char*)RTA_DATA(tb[RTA_IIF]));
}
if (r->rtm_table)
- fprintf(fp, "lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1)));
+ printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1));
if (tb[RTA_FLOW]) {
uint32_t to = *(uint32_t*)RTA_DATA(tb[RTA_FLOW]);
uint32_t from = to>>16;
to &= 0xFFFF;
if (from) {
- fprintf(fp, "realms %s/",
- rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
+ printf("realms %s/",
+ rtnl_rtrealm_n2a(from, b1));
}
- fprintf(fp, "%s ",
- rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
+ printf("%s ",
+ rtnl_rtrealm_n2a(to, b1));
}
if (r->rtm_type == RTN_NAT) {
if (tb[RTA_GATEWAY]) {
- fprintf(fp, "map-to %s ",
+ printf("map-to %s ",
format_host(r->rtm_family,
RTA_PAYLOAD(tb[RTA_GATEWAY]),
RTA_DATA(tb[RTA_GATEWAY]),
abuf, sizeof(abuf)));
} else
- fprintf(fp, "masquerade");
+ printf("masquerade");
} else if (r->rtm_type != RTN_UNICAST)
- fprintf(fp, "%s", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
+ fputs(rtnl_rtntype_n2a(r->rtm_type, b1), stdout);
- fprintf(fp, "\n");
- fflush(fp);
+ bb_putchar('\n');
+ /*fflush_all();*/
return 0;
}
-static int iprule_list(int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+static int iprule_list(char **argv)
{
struct rtnl_handle rth;
int af = preferred_family;
if (af == AF_UNSPEC)
af = AF_INET;
- if (argc > 0) {
+ if (*argv) {
//bb_error_msg("\"rule show\" needs no arguments");
- bb_warn_ignoring_args(argc);
+ bb_warn_ignoring_args(*argv);
return -1;
}
- if (rtnl_open(&rth, 0) < 0)
- return 1;
-
- if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
- bb_perror_msg("Cannot send dump request");
- return 1;
- }
+ xrtnl_open(&rth);
- if (rtnl_dump_filter(&rth, print_rule, stdout, NULL, NULL) < 0) {
- bb_error_msg("Dump terminated");
- return 1;
- }
+ xrtnl_wilddump_request(&rth, af, RTM_GETRULE);
+ xrtnl_dump_filter(&rth, print_rule, NULL);
return 0;
}
-
-static int iprule_modify(int cmd, int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+static int iprule_modify(int cmd, char **argv)
{
- int table_ok = 0;
+ static const char keywords[] ALIGN1 =
+ "from\0""to\0""preference\0""order\0""priority\0"
+ "tos\0""fwmark\0""realms\0""table\0""lookup\0""dev\0"
+ "iif\0""nat\0""map-to\0""type\0""help\0";
+ enum {
+ ARG_from = 1, ARG_to, ARG_preference, ARG_order, ARG_priority,
+ ARG_tos, ARG_fwmark, ARG_realms, ARG_table, ARG_lookup, ARG_dev,
+ ARG_iif, ARG_nat, ARG_map_to, ARG_type, ARG_help
+ };
+ bool table_ok = 0;
struct rtnl_handle rth;
struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
+ struct nlmsghdr n;
+ struct rtmsg r;
+ char buf[1024];
} req;
+ smalluint key;
memset(&req, 0, sizeof(req));
req.r.rtm_type = RTN_UNICAST;
}
- while (argc > 0) {
- if (strcmp(*argv, "from") == 0) {
+ while (*argv) {
+ key = index_in_substrings(keywords, *argv) + 1;
+ if (key == 0) /* no match found in keywords array, bail out. */
+ invarg(*argv, applet_name);
+ if (key == ARG_from) {
inet_prefix dst;
NEXT_ARG();
get_prefix(&dst, *argv, req.r.rtm_family);
req.r.rtm_src_len = dst.bitlen;
addattr_l(&req.n, sizeof(req), RTA_SRC, &dst.data, dst.bytelen);
- } else if (strcmp(*argv, "to") == 0) {
+ } else if (key == ARG_to) {
inet_prefix dst;
NEXT_ARG();
get_prefix(&dst, *argv, req.r.rtm_family);
req.r.rtm_dst_len = dst.bitlen;
addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
- } else if (matches(*argv, "preference") == 0 ||
- matches(*argv, "order") == 0 ||
- matches(*argv, "priority") == 0) {
+ } else if (key == ARG_preference ||
+ key == ARG_order ||
+ key == ARG_priority
+ ) {
uint32_t pref;
NEXT_ARG();
- if (get_u32(&pref, *argv, 0))
- invarg("preference value", *argv);
+ pref = get_u32(*argv, "preference");
addattr32(&req.n, sizeof(req), RTA_PRIORITY, pref);
- } else if (strcmp(*argv, "tos") == 0) {
+ } else if (key == ARG_tos) {
uint32_t tos;
NEXT_ARG();
if (rtnl_dsfield_a2n(&tos, *argv))
- invarg("TOS value", *argv);
+ invarg(*argv, "TOS");
req.r.rtm_tos = tos;
- } else if (strcmp(*argv, "fwmark") == 0) {
+ } else if (key == ARG_fwmark) {
uint32_t fwmark;
NEXT_ARG();
- if (get_u32(&fwmark, *argv, 0))
- invarg("fwmark value", *argv);
+ fwmark = get_u32(*argv, "fwmark");
addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
- } else if (matches(*argv, "realms") == 0) {
+ } else if (key == ARG_realms) {
uint32_t realm;
NEXT_ARG();
if (get_rt_realms(&realm, *argv))
- invarg("realms", *argv);
+ invarg(*argv, "realms");
addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
- } else if (matches(*argv, "table") == 0 ||
- strcmp(*argv, "lookup") == 0) {
+ } else if (key == ARG_table ||
+ key == ARG_lookup
+ ) {
uint32_t tid;
NEXT_ARG();
if (rtnl_rttable_a2n(&tid, *argv))
- invarg("table ID", *argv);
+ invarg(*argv, "table ID");
req.r.rtm_table = tid;
table_ok = 1;
- } else if (strcmp(*argv, "dev") == 0 ||
- strcmp(*argv, "iif") == 0) {
+ } else if (key == ARG_dev ||
+ key == ARG_iif
+ ) {
NEXT_ARG();
addattr_l(&req.n, sizeof(req), RTA_IIF, *argv, strlen(*argv)+1);
- } else if (strcmp(*argv, "nat") == 0 ||
- matches(*argv, "map-to") == 0) {
+ } else if (key == ARG_nat ||
+ key == ARG_map_to
+ ) {
NEXT_ARG();
addattr32(&req.n, sizeof(req), RTA_GATEWAY, get_addr32(*argv));
req.r.rtm_type = RTN_NAT;
} else {
int type;
- if (strcmp(*argv, "type") == 0) {
+ if (key == ARG_type) {
NEXT_ARG();
}
- if (matches(*argv, "help") == 0)
+ if (key == ARG_help)
bb_show_usage();
if (rtnl_rtntype_a2n(&type, *argv))
- invarg("Failed to parse rule type", *argv);
+ invarg(*argv, "type");
req.r.rtm_type = type;
}
- argc--;
argv++;
}
if (!table_ok && cmd == RTM_NEWRULE)
req.r.rtm_table = RT_TABLE_MAIN;
- if (rtnl_open(&rth, 0) < 0)
- return 1;
+ xrtnl_open(&rth);
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
return 2;
return 0;
}
-int do_iprule(int argc, char **argv)
+/* Return value becomes exitcode. It's okay to not return at all */
+int FAST_FUNC do_iprule(char **argv)
{
- static const char * const ip_rule_commands[] =
- {"add", "delete", "list", "show", 0};
- int cmd = 2; /* list */
-
- if (argc < 1)
- return iprule_list(0, NULL);
- if (*argv)
- cmd = index_in_substr_array(ip_rule_commands, *argv);
-
- switch (cmd) {
- case 0: /* add */
- cmd = RTM_NEWRULE;
- break;
- case 1: /* delete */
- cmd = RTM_DELRULE;
- break;
- case 2: /* list */
- case 3: /* show */
- return iprule_list(argc-1, argv+1);
- break;
- default:
- bb_error_msg_and_die("unknown command %s", *argv);
+ static const char ip_rule_commands[] ALIGN1 =
+ "add\0""delete\0""list\0""show\0";
+ if (*argv) {
+ int cmd = index_in_substrings(ip_rule_commands, *argv);
+ if (cmd < 0)
+ invarg(*argv, applet_name);
+ argv++;
+ if (cmd < 2)
+ return iprule_modify((cmd == 0) ? RTM_NEWRULE : RTM_DELRULE, argv);
}
- return iprule_modify(cmd, argc-1, argv+1);
+ return iprule_list(argv);
}
-
projects / oweals / busybox.git / blobdiff