This was merely an outdated duplicate of extensions/libarpt_mangle.c.
Signed-off-by: Phil Sutter <phil@xxxxxx>
---
extensions/libxt_mangle.c | 396 --------------------------------------
1 file changed, 396 deletions(-)
delete mode 100644 extensions/libxt_mangle.c
diff --git a/extensions/libxt_mangle.c b/extensions/libxt_mangle.c
deleted file mode 100644
index 360742b6f4a21..0000000000000
--- a/extensions/libxt_mangle.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * 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:
- * Libarptc code from: Bart De Schuymer <bdschuym@xxxxxxxxxx>
- * Port to libxtables: Tomasz Bursztyka <tomasz.bursztyka@xxxxxxxxxxxxxxx>
- */
-
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <getopt.h>
-#include <errno.h>
-#include <netinet/ether.h>
-
-#include <xtables.h>
-#include <linux/netfilter_arp/arpt_mangle.h>
-
-static void mangle_help(void)
-{
- printf(
-"mangle target options:\n"
-"--mangle-ip-s IP address\n"
-"--mangle-ip-d IP address\n"
-"--mangle-mac-s MAC address\n"
-"--mangle-mac-d MAC address\n"
-"--mangle-target target (DROP, CONTINUE or ACCEPT -- default is ACCEPT)\n"
- );
-}
-
-enum {
- MANGLE_IPS = 0,
- MANGLE_IPT = 1,
- MANGLE_DEVS = 2,
- MANGLE_DEVT = 3,
- MANGLE_TARGET = 4,
-};
-
-static const struct xt_option_entry mangle_opts[] = {
- { .name = "mangle-ip-s", .id = MANGLE_IPS, .type = XTTYPE_STRING },
- { .name = "mangle-ip-d", .id = MANGLE_IPT, .type = XTTYPE_STRING },
- { .name = "mangle-mac-s", .id = MANGLE_DEVS, .type = XTTYPE_STRING },
- { .name = "mangle-mac-d", .id = MANGLE_DEVT, .type = XTTYPE_STRING },
- { .name = "mangle-target", .id = MANGLE_TARGET,
- .type = XTTYPE_STRING },
- XTOPT_TABLEEND,
-};
-
-
-static struct in_addr *network_to_addr(const char *name)
-{
- struct netent *net;
- static struct in_addr addr;
-
- if ((net = getnetbyname(name)) != NULL) {
- if (net->n_addrtype != AF_INET)
- return (struct in_addr *) NULL;
- addr.s_addr = htonl((unsigned long) net->n_net);
- return &addr;
- }
-
- return (struct in_addr *) NULL;
-}
-
-static void inaddrcpy(struct in_addr *dst, struct in_addr *src)
-{
- dst->s_addr = src->s_addr;
-}
-
-static struct in_addr *host_to_addr(const char *name, unsigned int *naddr)
-{
- struct in_addr *addr;
- struct addrinfo hints;
- struct addrinfo *res, *p;
- int err;
- unsigned int i;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_flags = AI_CANONNAME;
- hints.ai_family = AF_INET;
- hints.ai_socktype = SOCK_RAW;
-
- *naddr = 0;
- err = getaddrinfo(name, NULL, &hints, &res);
- if (err != 0)
- return NULL;
- else {
- for (p = res; p != NULL; p = p->ai_next)
- (*naddr)++;
- addr = xtables_calloc(*naddr, sizeof(struct in_addr));
- for (i = 0, p = res; p != NULL; p = p->ai_next)
- memcpy(&addr[i++],
- &((const struct sockaddr_in *)p->ai_addr)->sin_addr,
- sizeof(struct in_addr));
- freeaddrinfo(res);
- return addr;
- }
-
- return (struct in_addr *) NULL;
-}
-
-static int string_to_number(const char *s, unsigned int min,
- unsigned int max, unsigned int *ret)
-{
- long number;
- char *end;
-
- /* Handle hex, octal, etc. */
- errno = 0;
- number = strtol(s, &end, 0);
- if (*end == '\0' && end != s) {
- /* we parsed a number, let's see if we want this */
- if (errno != ERANGE && min <= number && number <= max) {
- *ret = number;
- return 0;
- }
- }
- return -1;
-}
-
-static struct in_addr *dotted_to_addr(const char *dotted)
-{
- static struct in_addr addr;
- unsigned char *addrp;
- char *p, *q;
- unsigned int onebyte;
- int i;
- char buf[20];
-
- /* copy dotted string, because we need to modify it */
- strncpy(buf, dotted, sizeof(buf) - 1);
- addrp = (unsigned char *) &(addr.s_addr);
-
- p = buf;
- for (i = 0; i < 3; i++) {
- if ((q = strchr(p, '.')) == NULL)
- return (struct in_addr *) NULL;
-
- *q = '\0';
- if (string_to_number(p, 0, 255, &onebyte) == -1)
- return (struct in_addr *) NULL;
-
- addrp[i] = (unsigned char) onebyte;
- p = q + 1;
- }
-
- /* we've checked 3 bytes, now we check the last one */
- if (string_to_number(p, 0, 255, &onebyte) == -1)
- return (struct in_addr *) NULL;
-
- addrp[3] = (unsigned char) onebyte;
-
- return &addr;
-}
-
-static struct in_addr *parse_hostnetwork(const char *name,
- unsigned int *naddrs)
-{
- struct in_addr *addrp, *addrptmp;
-
- if ((addrptmp = dotted_to_addr(name)) != NULL ||
- (addrptmp = network_to_addr(name)) != NULL) {
- addrp = xtables_malloc(sizeof(struct in_addr));
- inaddrcpy(addrp, addrptmp);
- *naddrs = 1;
- return addrp;
- }
- if ((addrp = host_to_addr(name, naddrs)) != NULL)
- return addrp;
-
- xtables_error(PARAMETER_PROBLEM, "host/network `%s' not found", name);
-}
-
-static void mangle_parse(struct xt_option_call *cb)
-{
- const struct arpt_entry *e = cb->xt_entry;
- struct arpt_mangle *mangle = cb->data;
- struct in_addr *ipaddr;
- struct ether_addr *macaddr;
-
- /* mangle target is by default "ACCEPT". Setting it here,
- * since original arpt_mangle.c init() no longer exists*/
- mangle->target = NF_ACCEPT;
-
- xtables_option_parse(cb);
- switch (cb->entry->id) {
- case MANGLE_IPS:
-/*
- if (e->arp.arpln_mask == 0)
- xtables_error(PARAMETER_PROBLEM, "no pln defined");
-
- if (e->arp.invflags & ARPT_INV_ARPPLN)
- xtables_error(PARAMETER_PROBLEM,
- "! pln not allowed for --mangle-ip-s");
-*/
-/*
- if (e->arp.arpln != 4)
- xtables_error(PARAMETER_PROBLEM, "only pln=4 supported");
-*/
- {
- unsigned int nr;
- ipaddr = parse_hostnetwork(cb->arg, &nr);
- }
- mangle->u_s.src_ip.s_addr = ipaddr->s_addr;
- free(ipaddr);
- mangle->flags |= ARPT_MANGLE_SIP;
- break;
- case MANGLE_IPT:
-/*
- if (e->arp.arpln_mask == 0)
- xtables_error(PARAMETER_PROBLEM, "no pln defined");
-
- if (e->arp.invflags & ARPT_INV_ARPPLN)
- xtables_error(PARAMETER_PROBLEM,
- "! pln not allowed for --mangle-ip-d");
-*/
-/*
- if (e->arp.arpln != 4)
- xtables_error(PARAMETER_PROBLEM, "only pln=4 supported");
-*/
- {
- unsigned int nr;
- ipaddr = parse_hostnetwork(cb->arg, &nr);
- }
- mangle->u_t.tgt_ip.s_addr = ipaddr->s_addr;
- free(ipaddr);
- mangle->flags |= ARPT_MANGLE_TIP;
- break;
- case MANGLE_DEVS:
- if (e->arp.arhln_mask == 0)
- xtables_error(PARAMETER_PROBLEM,
- "no --h-length defined");
- if (e->arp.invflags & ARPT_INV_ARPHLN)
- xtables_error(PARAMETER_PROBLEM,
- "! --h-length not allowed for "
- "--mangle-mac-s");
- if (e->arp.arhln != 6)
- xtables_error(PARAMETER_PROBLEM,
- "only --h-length 6 supported");
- macaddr = ether_aton(cb->arg);
- if (macaddr == NULL)
- xtables_error(PARAMETER_PROBLEM, "invalid source MAC");
- memcpy(mangle->src_devaddr, macaddr, e->arp.arhln);
- mangle->flags |= ARPT_MANGLE_SDEV;
- break;
- case MANGLE_DEVT:
- if (e->arp.arhln_mask == 0)
- xtables_error(PARAMETER_PROBLEM,
- "no --h-length defined");
- if (e->arp.invflags & ARPT_INV_ARPHLN)
- xtables_error(PARAMETER_PROBLEM,
- "! hln not allowed for --mangle-mac-d");
- if (e->arp.arhln != 6)
- xtables_error(PARAMETER_PROBLEM,
- "only --h-length 6 supported");
- macaddr = ether_aton(cb->arg);
- if (macaddr == NULL)
- xtables_error(PARAMETER_PROBLEM, "invalid target MAC");
- memcpy(mangle->tgt_devaddr, macaddr, e->arp.arhln);
- mangle->flags |= ARPT_MANGLE_TDEV;
- break;
- case MANGLE_TARGET:
- if (!strcmp(cb->arg, "DROP"))
- mangle->target = NF_DROP;
- else if (!strcmp(cb->arg, "ACCEPT"))
- mangle->target = NF_ACCEPT;
- else if (!strcmp(cb->arg, "CONTINUE"))
- mangle->target = ARPT_CONTINUE;
- else
- xtables_error(PARAMETER_PROBLEM,
- "bad target for --mangle-target");
- break;
- }
-}
-
-static void mangle_fcheck(struct xt_fcheck_call *cb)
-{
-}
-
-static char *addr_to_dotted(const struct in_addr *addrp)
-{
- static char buf[20];
- const unsigned char *bytep;
-
- bytep = (const unsigned char *) &(addrp->s_addr);
- sprintf(buf, "%d.%d.%d.%d", bytep[0], bytep[1], bytep[2], bytep[3]);
- return buf;
-}
-
-static char *addr_to_host(const struct in_addr *addr)
-{
- struct hostent *host;
-
- if ((host = gethostbyaddr((char *) addr,
- sizeof(struct in_addr), AF_INET)) != NULL)
- return (char *) host->h_name;
-
- return (char *) NULL;
-}
-
-static char *addr_to_network(const struct in_addr *addr)
-{
- struct netent *net;
-
- if ((net = getnetbyaddr((long) ntohl(addr->s_addr), AF_INET)) != NULL)
- return (char *) net->n_name;
-
- return (char *) NULL;
-}
-
-static char *addr_to_anyname(const struct in_addr *addr)
-{
- char *name;
-
- if ((name = addr_to_host(addr)) != NULL ||
- (name = addr_to_network(addr)) != NULL)
- return name;
-
- return addr_to_dotted(addr);
-}
-
-static void print_mac(const unsigned char *mac, int l)
-{
- int j;
-
- for (j = 0; j < l; j++)
- printf("%02x%s", mac[j],
- (j==l-1) ? "" : ":");
-}
-
-static void mangle_print(const void *ip, const struct xt_entry_target *target,
- int numeric)
-{
- const struct arpt_mangle *m = (const void *)target;
- char buf[100];
-
- if (m->flags & ARPT_MANGLE_SIP) {
- if (numeric)
- sprintf(buf, "%s", addr_to_dotted(&(m->u_s.src_ip)));
- else
- sprintf(buf, "%s", addr_to_anyname(&(m->u_s.src_ip)));
- printf("--mangle-ip-s %s ", buf);
- }
- if (m->flags & ARPT_MANGLE_SDEV) {
- printf("--mangle-mac-s ");
- print_mac((unsigned char *)m->src_devaddr, 6);
- printf(" ");
- }
- if (m->flags & ARPT_MANGLE_TIP) {
- if (numeric)
- sprintf(buf, "%s", addr_to_dotted(&(m->u_t.tgt_ip)));
- else
- sprintf(buf, "%s", addr_to_anyname(&(m->u_t.tgt_ip)));
- printf("--mangle-ip-d %s ", buf);
- }
- if (m->flags & ARPT_MANGLE_TDEV) {
- printf("--mangle-mac-d ");
- print_mac((unsigned char *)m->tgt_devaddr, 6);
- printf(" ");
- }
- if (m->target != NF_ACCEPT) {
- printf("--mangle-target ");
- if (m->target == NF_DROP)
- printf("DROP ");
- else
- printf("CONTINUE ");
- }
-}
-
-static void mangle_save(const void *ip, const struct xt_entry_target *target)
-{
-}
-
-static struct xtables_target mangle_tg_reg = {
- .family = NFPROTO_ARP,
- .name = "mangle",
- .version = XTABLES_VERSION,
- .size = XT_ALIGN(sizeof(struct arpt_mangle)),
- .userspacesize = XT_ALIGN(sizeof(struct arpt_mangle)),
- .help = mangle_help,
- .x6_parse = mangle_parse,
- .x6_fcheck = mangle_fcheck,
- .print = mangle_print,
- .save = mangle_save,
- .x6_options = mangle_opts,
-};
-
-void _init(void)
-{
- xtables_register_target(&mangle_tg_reg);
-}
--
2.18.0
