This was merely an outdated duplicate of extensions/libarpt_mangle.c.

Signed-off-by: Phil Sutter <p...@nwl.cc>
---
 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 <bdsch...@pandora.be>
- *     Port to libxtables: Tomasz Bursztyka <tomasz.burszt...@linux.intel.com>
- */
-
-#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

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