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author/C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org </C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org>2007-07-24 06:49:15 +0000
committer/C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org </C=JP/ST=JP/CN=Yasuyuki Kozakai/emailAddress=yasuyuki@netfilter.org>2007-07-24 06:49:15 +0000
commit07f3b67318842d544d1b26709c75fc86efcda5f9 (patch)
treec9c7641e55a6a86eb8d8d008d27a59ae08657c12 /extensions/libip6t_multiport.c
parentb6f476c6d955f7a0e914ef701e57551a96985b12 (diff)
Unifies libip[6]t_multiport.c into libipxt_multiport.c
Diffstat (limited to 'extensions/libip6t_multiport.c')
-rw-r--r--extensions/libip6t_multiport.c464
1 files changed, 0 insertions, 464 deletions
diff --git a/extensions/libip6t_multiport.c b/extensions/libip6t_multiport.c
deleted file mode 100644
index 2ff77fe..0000000
--- a/extensions/libip6t_multiport.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/* Shared library add-on to iptables to add multiple TCP port support. */
-#include <stdio.h>
-#include <netdb.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <ip6tables.h>
-/* To ensure that iptables compiles with an old kernel */
-#include "../include/linux/netfilter_ipv6/ip6t_multiport.h"
-
-/* Function which prints out usage message. */
-static void
-help(void)
-{
- printf(
-"multiport v%s options:\n"
-" --source-ports port[,port,port...]\n"
-" --sports ...\n"
-" match source port(s)\n"
-" --destination-ports port[,port,port...]\n"
-" --dports ...\n"
-" match destination port(s)\n"
-" --ports port[,port,port]\n"
-" match both source and destination port(s)\n"
-" NOTE: this kernel does not support port ranges in multiport.\n",
-IPTABLES_VERSION);
-}
-
-static void
-help_v1(void)
-{
- printf(
-"multiport v%s options:\n"
-" --source-ports [!] port[,port:port,port...]\n"
-" --sports ...\n"
-" match source port(s)\n"
-" --destination-ports [!] port[,port:port,port...]\n"
-" --dports ...\n"
-" match destination port(s)\n"
-" --ports [!] port[,port:port,port]\n"
-" match both source and destination port(s)\n",
-IPTABLES_VERSION);
-}
-
-static struct option opts[] = {
- { "source-ports", 1, 0, '1' },
- { "sports", 1, 0, '1' }, /* synonym */
- { "destination-ports", 1, 0, '2' },
- { "dports", 1, 0, '2' }, /* synonym */
- { "ports", 1, 0, '3' },
- {0}
-};
-
-static char *
-proto_to_name(u_int8_t proto)
-{
- switch (proto) {
- case IPPROTO_TCP:
- return "tcp";
- case IPPROTO_UDP:
- return "udp";
- case IPPROTO_SCTP:
- return "sctp";
- case IPPROTO_DCCP:
- return "dccp";
- default:
- return NULL;
- }
-}
-
-static unsigned int
-parse_multi_ports(const char *portstring, u_int16_t *ports, const char *proto)
-{
- char *buffer, *cp, *next;
- unsigned int i;
-
- buffer = strdup(portstring);
- if (!buffer) exit_error(OTHER_PROBLEM, "strdup failed");
-
- for (cp=buffer, i=0; cp && i<IP6T_MULTI_PORTS; cp=next,i++)
- {
- next=strchr(cp, ',');
- if (next) *next++='\0';
- ports[i] = parse_port(cp, proto);
- }
- if (cp) exit_error(PARAMETER_PROBLEM, "too many ports specified");
- free(buffer);
- return i;
-}
-
-static void
-parse_multi_ports_v1(const char *portstring,
- struct ip6t_multiport_v1 *multiinfo,
- const char *proto)
-{
- char *buffer, *cp, *next, *range;
- unsigned int i;
- u_int16_t m;
-
- buffer = strdup(portstring);
- if (!buffer) exit_error(OTHER_PROBLEM, "strdup failed");
-
- for (i=0; i<IP6T_MULTI_PORTS; i++)
- multiinfo->pflags[i] = 0;
-
- for (cp=buffer, i=0; cp && i<IP6T_MULTI_PORTS; cp=next, i++) {
- next=strchr(cp, ',');
- if (next) *next++='\0';
- range = strchr(cp, ':');
- if (range) {
- if (i == IP6T_MULTI_PORTS-1)
- exit_error(PARAMETER_PROBLEM,
- "too many ports specified");
- *range++ = '\0';
- }
- multiinfo->ports[i] = parse_port(cp, proto);
- if (range) {
- multiinfo->pflags[i] = 1;
- multiinfo->ports[++i] = parse_port(range, proto);
- if (multiinfo->ports[i-1] >= multiinfo->ports[i])
- exit_error(PARAMETER_PROBLEM,
- "invalid portrange specified");
- m <<= 1;
- }
- }
- multiinfo->count = i;
- if (cp) exit_error(PARAMETER_PROBLEM, "too many ports specified");
- free(buffer);
-}
-
-/* Initialize the match. */
-static void
-init(struct xt_entry_match *m, unsigned int *nfcache)
-{
-}
-
-static const char *
-check_proto(const void *e)
-{
- const struct ip6t_entry *entry = e;
- char *proto;
-
- if ((proto = proto_to_name(entry->ipv6.proto)) != NULL)
- return proto;
- else if (!entry->ipv6.proto)
- exit_error(PARAMETER_PROBLEM,
- "multiport needs `-p tcp', `-p udp', `-p sctp' or `-p dccp'");
- else
- exit_error(PARAMETER_PROBLEM,
- "multiport only works with TCP, UDP, SCTP and DCCP");
-}
-
-/* Function which parses command options; returns true if it
- ate an option */
-static int
-parse(int c, char **argv, int invert, unsigned int *flags,
- const void *e,
- unsigned int *nfcache,
- struct xt_entry_match **match)
-{
- const struct ip6t_entry *entry = e;
- const char *proto;
- struct ip6t_multiport *multiinfo
- = (struct ip6t_multiport *)(*match)->data;
-
- switch (c) {
- case '1':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- multiinfo->count = parse_multi_ports(argv[optind-1],
- multiinfo->ports, proto);
- multiinfo->flags = IP6T_MULTIPORT_SOURCE;
- break;
-
- case '2':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- multiinfo->count = parse_multi_ports(argv[optind-1],
- multiinfo->ports, proto);
- multiinfo->flags = IP6T_MULTIPORT_DESTINATION;
- break;
-
- case '3':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- multiinfo->count = parse_multi_ports(argv[optind-1],
- multiinfo->ports, proto);
- multiinfo->flags = IP6T_MULTIPORT_EITHER;
- break;
-
- default:
- return 0;
- }
-
- if (invert)
- exit_error(PARAMETER_PROBLEM,
- "multiport does not support invert");
-
- if (*flags)
- exit_error(PARAMETER_PROBLEM,
- "multiport can only have one option");
- *flags = 1;
- return 1;
-}
-
-static int
-parse_v1(int c, char **argv, int invert, unsigned int *flags,
- const void *e,
- unsigned int *nfcache,
- struct xt_entry_match **match)
-{
- const struct ip6t_entry *entry = e;
- const char *proto;
- struct ip6t_multiport_v1 *multiinfo
- = (struct ip6t_multiport_v1 *)(*match)->data;
-
- switch (c) {
- case '1':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- parse_multi_ports_v1(argv[optind-1], multiinfo, proto);
- multiinfo->flags = IP6T_MULTIPORT_SOURCE;
- break;
-
- case '2':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- parse_multi_ports_v1(argv[optind-1], multiinfo, proto);
- multiinfo->flags = IP6T_MULTIPORT_DESTINATION;
- break;
-
- case '3':
- check_inverse(argv[optind-1], &invert, &optind, 0);
- proto = check_proto(entry);
- parse_multi_ports_v1(argv[optind-1], multiinfo, proto);
- multiinfo->flags = IP6T_MULTIPORT_EITHER;
- break;
-
- default:
- return 0;
- }
-
- if (invert)
- multiinfo->invert = 1;
-
- if (*flags)
- exit_error(PARAMETER_PROBLEM,
- "multiport can only have one option");
- *flags = 1;
- return 1;
-}
-
-/* Final check; must specify something. */
-static void
-final_check(unsigned int flags)
-{
- if (!flags)
- exit_error(PARAMETER_PROBLEM, "multiport expection an option");
-}
-
-static char *
-port_to_service(int port, u_int8_t proto)
-{
- struct servent *service;
-
- if ((service = getservbyport(htons(port), proto_to_name(proto))))
- return service->s_name;
-
- return NULL;
-}
-
-static void
-print_port(u_int16_t port, u_int8_t protocol, int numeric)
-{
- char *service;
-
- if (numeric || (service = port_to_service(port, protocol)) == NULL)
- printf("%u", port);
- else
- printf("%s", service);
-}
-
-/* Prints out the matchinfo. */
-static void
-print(const void *ip_void,
- const struct xt_entry_match *match,
- int numeric)
-{
- const struct ip6t_ip6 *ip = ip_void;
- const struct ip6t_multiport *multiinfo
- = (const struct ip6t_multiport *)match->data;
- unsigned int i;
-
- printf("multiport ");
-
- switch (multiinfo->flags) {
- case IP6T_MULTIPORT_SOURCE:
- printf("sports ");
- break;
-
- case IP6T_MULTIPORT_DESTINATION:
- printf("dports ");
- break;
-
- case IP6T_MULTIPORT_EITHER:
- printf("ports ");
- break;
-
- default:
- printf("ERROR ");
- break;
- }
-
- for (i=0; i < multiinfo->count; i++) {
- printf("%s", i ? "," : "");
- print_port(multiinfo->ports[i], ip->proto, numeric);
- }
- printf(" ");
-}
-
-static void
-print_v1(const void *ip_void,
- const struct xt_entry_match *match,
- int numeric)
-{
- const struct ip6t_ip6 *ip = ip_void;
- const struct ip6t_multiport_v1 *multiinfo
- = (const struct ip6t_multiport_v1 *)match->data;
- unsigned int i;
-
- printf("multiport ");
-
- switch (multiinfo->flags) {
- case IP6T_MULTIPORT_SOURCE:
- printf("sports ");
- break;
-
- case IP6T_MULTIPORT_DESTINATION:
- printf("dports ");
- break;
-
- case IP6T_MULTIPORT_EITHER:
- printf("ports ");
- break;
-
- default:
- printf("ERROR ");
- break;
- }
-
- if (multiinfo->invert)
- printf("! ");
-
- for (i=0; i < multiinfo->count; i++) {
- printf("%s", i ? "," : "");
- print_port(multiinfo->ports[i], ip->proto, numeric);
- if (multiinfo->pflags[i]) {
- printf(":");
- print_port(multiinfo->ports[++i], ip->proto, numeric);
- }
- }
- printf(" ");
-}
-
-/* Saves the union ip6t_matchinfo in parsable form to stdout. */
-static void save(const void *ip_void, const struct xt_entry_match *match)
-{
- const struct ip6t_ip6 *ip = ip_void;
- const struct ip6t_multiport *multiinfo
- = (const struct ip6t_multiport *)match->data;
- unsigned int i;
-
- switch (multiinfo->flags) {
- case IP6T_MULTIPORT_SOURCE:
- printf("--sports ");
- break;
-
- case IP6T_MULTIPORT_DESTINATION:
- printf("--dports ");
- break;
-
- case IP6T_MULTIPORT_EITHER:
- printf("--ports ");
- break;
- }
-
- for (i=0; i < multiinfo->count; i++) {
- printf("%s", i ? "," : "");
- print_port(multiinfo->ports[i], ip->proto, 1);
- }
- printf(" ");
-}
-
-static void save_v1(const void *ip_void, const struct xt_entry_match *match)
-{
- const struct ip6t_ip6 *ip = ip_void;
- const struct ip6t_multiport_v1 *multiinfo
- = (const struct ip6t_multiport_v1 *)match->data;
- unsigned int i;
-
- switch (multiinfo->flags) {
- case IP6T_MULTIPORT_SOURCE:
- printf("--sports ");
- break;
-
- case IP6T_MULTIPORT_DESTINATION:
- printf("--dports ");
- break;
-
- case IP6T_MULTIPORT_EITHER:
- printf("--ports ");
- break;
- }
-
- if (multiinfo->invert)
- printf("! ");
-
- for (i=0; i < multiinfo->count; i++) {
- printf("%s", i ? "," : "");
- print_port(multiinfo->ports[i], ip->proto, 1);
- if (multiinfo->pflags[i]) {
- printf(":");
- print_port(multiinfo->ports[++i], ip->proto, 1);
- }
- }
- printf(" ");
-}
-
-static struct ip6tables_match multiport = {
- .name = "multiport",
- .version = IPTABLES_VERSION,
- .size = IP6T_ALIGN(sizeof(struct ip6t_multiport)),
- .userspacesize = IP6T_ALIGN(sizeof(struct ip6t_multiport)),
- .help = &help,
- .init = &init,
- .parse = &parse,
- .final_check = &final_check,
- .print = &print,
- .save = &save,
- .extra_opts = opts,
-};
-
-static struct ip6tables_match multiport_v1 = {
- .next = NULL,
- .name = "multiport",
- .revision = 1,
- .version = IPTABLES_VERSION,
- .size = IP6T_ALIGN(sizeof(struct ip6t_multiport_v1)),
- .userspacesize = IP6T_ALIGN(sizeof(struct ip6t_multiport_v1)),
- .help = &help_v1,
- .init = &init,
- .parse = &parse_v1,
- .final_check = &final_check,
- .print = &print_v1,
- .save = &save_v1,
- .extra_opts = opts
-};
-
-void
-_init(void)
-{
- register_match6(&multiport);
- register_match6(&multiport_v1);
-}