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author/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org </C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org>2007-04-16 19:08:42 +0000
committer/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org </C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org>2007-04-16 19:08:42 +0000
commit5eb3bc6d5594fccfff26329a26225f999e971652 (patch)
tree242b74bb06e32ef6d9621a73a0010b1c2ab7da4a /daemon/src
parentad31f852c3454136bdbfeb7f222cb9c175f13c1c (diff)
first step forward to merge conntrackd and conntrack into the same building chain
Diffstat (limited to 'daemon/src')
-rw-r--r--daemon/src/Makefile.am22
-rw-r--r--daemon/src/alarm.c141
-rw-r--r--daemon/src/buffer.c136
-rw-r--r--daemon/src/cache.c446
-rw-r--r--daemon/src/cache_iterators.c229
-rw-r--r--daemon/src/cache_lifetime.c65
-rw-r--r--daemon/src/cache_timer.c72
-rw-r--r--daemon/src/checksum.c32
-rw-r--r--daemon/src/hash.c199
-rw-r--r--daemon/src/ignore_pool.c136
-rw-r--r--daemon/src/local.c159
-rw-r--r--daemon/src/lock.c32
-rw-r--r--daemon/src/log.c57
-rw-r--r--daemon/src/main.c302
-rw-r--r--daemon/src/mcast.c287
-rw-r--r--daemon/src/netlink.c326
-rw-r--r--daemon/src/network.c282
-rw-r--r--daemon/src/proxy.c124
-rw-r--r--daemon/src/read_config_lex.l125
-rw-r--r--daemon/src/read_config_yy.y550
-rw-r--r--daemon/src/run.c227
-rw-r--r--daemon/src/state_helper.c44
-rw-r--r--daemon/src/state_helper_tcp.c35
-rw-r--r--daemon/src/stats-mode.c151
-rw-r--r--daemon/src/sync-mode.c416
-rw-r--r--daemon/src/sync-nack.c309
-rw-r--r--daemon/src/sync-notrack.c127
-rw-r--r--daemon/src/traffic_stats.c54
28 files changed, 0 insertions, 5085 deletions
diff --git a/daemon/src/Makefile.am b/daemon/src/Makefile.am
deleted file mode 100644
index 5d1c6cb..0000000
--- a/daemon/src/Makefile.am
+++ /dev/null
@@ -1,22 +0,0 @@
-include $(top_srcdir)/Make_global.am
-
-YACC=@YACC@ -d
-
-CLEANFILES = read_config_yy.c read_config_lex.c
-
-sbin_PROGRAMS = conntrackd
-conntrackd_SOURCES = alarm.c main.c run.c hash.c buffer.c \
- local.c log.c mcast.c netlink.c proxy.c lock.c \
- ignore_pool.c \
- cache.c cache_iterators.c \
- cache_lifetime.c cache_timer.c \
- sync-mode.c sync-notrack.c sync-nack.c \
- traffic_stats.c stats-mode.c \
- network.c checksum.c \
- state_helper.c state_helper_tcp.c \
- read_config_yy.y read_config_lex.l
-
-conntrackd_LDFLAGS = $(all_libraries) -lnfnetlink -lnetfilter_conntrack \
- -lpthread
-
-EXTRA_DIST = read_config_yy.h
diff --git a/daemon/src/alarm.c b/daemon/src/alarm.c
deleted file mode 100644
index 1a465c2..0000000
--- a/daemon/src/alarm.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include "linux_list.h"
-#include "conntrackd.h"
-#include "alarm.h"
-#include "jhash.h"
-#include <pthread.h>
-#include <time.h>
-#include <errno.h>
-
-/* alarm cascade */
-#define ALARM_CASCADE_SIZE 10
-static struct list_head *alarm_cascade;
-
-/* thread stuff */
-static pthread_t alarm_thread;
-
-struct alarm_list *create_alarm()
-{
- return (struct alarm_list *) malloc(sizeof(struct alarm_list));
-}
-
-void destroy_alarm(struct alarm_list *t)
-{
- free(t);
-}
-
-void set_alarm_expiration(struct alarm_list *t, unsigned long expires)
-{
- t->expires = expires;
-}
-
-void set_alarm_function(struct alarm_list *t,
- void (*fcn)(struct alarm_list *a, void *data))
-{
- t->function = fcn;
-}
-
-void set_alarm_data(struct alarm_list *t, void *data)
-{
- t->data = data;
-}
-
-void init_alarm(struct alarm_list *t)
-{
- INIT_LIST_HEAD(&t->head);
-
- t->expires = 0;
- t->data = 0;
- t->function = NULL;
-}
-
-void add_alarm(struct alarm_list *alarm)
-{
- unsigned int pos = jhash(alarm, sizeof(alarm), 0) % ALARM_CASCADE_SIZE;
-
- list_add(&alarm->head, &alarm_cascade[pos]);
-}
-
-void del_alarm(struct alarm_list *alarm)
-{
- list_del(&alarm->head);
-}
-
-int mod_alarm(struct alarm_list *alarm, unsigned long expires)
-{
- alarm->expires = expires;
- return 0;
-}
-
-void __run_alarms()
-{
- struct list_head *i, *tmp;
- struct alarm_list *t;
- struct timespec req = {0, 1000000000 / ALARM_CASCADE_SIZE};
- struct timespec rem;
- static int step = 0;
-
-retry:
- if (nanosleep(&req, &rem) == -1) {
- /* interrupted syscall: retry with remaining time */
- if (errno == EINTR) {
- memcpy(&req, &rem, sizeof(struct timespec));
- goto retry;
- }
- }
-
- lock();
- list_for_each_safe(i, tmp, &alarm_cascade[step]) {
- t = (struct alarm_list *) i;
-
- t->expires--;
- if (t->expires == 0)
- t->function(t, t->data);
- }
- step = (step + 1) < ALARM_CASCADE_SIZE ? step + 1 : 0;
- unlock();
-}
-
-void *run_alarms(void *foo)
-{
- while(1)
- __run_alarms();
-}
-
-int create_alarm_thread()
-{
- int i;
-
- alarm_cascade = malloc(sizeof(struct list_head) * ALARM_CASCADE_SIZE);
- if (alarm_cascade == NULL)
- return -1;
-
- for (i=0; i<ALARM_CASCADE_SIZE; i++)
- INIT_LIST_HEAD(&alarm_cascade[i]);
-
- return pthread_create(&alarm_thread, NULL, run_alarms, NULL);
-}
-
-int destroy_alarm_thread()
-{
- return pthread_cancel(alarm_thread);
-}
diff --git a/daemon/src/buffer.c b/daemon/src/buffer.c
deleted file mode 100644
index fa0b859..0000000
--- a/daemon/src/buffer.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "buffer.h"
-
-struct buffer *buffer_create(size_t max_size)
-{
- struct buffer *b;
-
- b = malloc(sizeof(struct buffer));
- if (b == NULL)
- return NULL;
- memset(b, 0, sizeof(struct buffer));
-
- b->max_size = max_size;
- INIT_LIST_HEAD(&b->head);
- pthread_mutex_init(&b->lock, NULL);
-
- return b;
-}
-
-void buffer_destroy(struct buffer *b)
-{
- struct list_head *i, *tmp;
- struct buffer_node *node;
-
- pthread_mutex_lock(&b->lock);
- list_for_each_safe(i, tmp, &b->head) {
- node = (struct buffer_node *) i;
- list_del(i);
- free(node);
- }
- pthread_mutex_unlock(&b->lock);
- pthread_mutex_destroy(&b->lock);
- free(b);
-}
-
-static struct buffer_node *buffer_node_create(const void *data, size_t size)
-{
- struct buffer_node *n;
-
- n = malloc(sizeof(struct buffer_node) + size);
- if (n == NULL)
- return NULL;
-
- INIT_LIST_HEAD(&n->head);
- n->size = size;
- memcpy(n->data, data, size);
-
- return n;
-}
-
-int buffer_add(struct buffer *b, const void *data, size_t size)
-{
- int ret = 0;
- struct buffer_node *n;
-
- pthread_mutex_lock(&b->lock);
-
- /* does it fit this buffer? */
- if (size > b->max_size) {
- errno = ENOSPC;
- ret = -1;
- goto err;
- }
-
-retry:
- /* buffer is full: kill the oldest entry */
- if (b->cur_size + size > b->max_size) {
- n = (struct buffer_node *) b->head.prev;
- list_del(b->head.prev);
- b->cur_size -= n->size;
- free(n);
- goto retry;
- }
-
- n = buffer_node_create(data, size);
- if (n == NULL) {
- ret = -1;
- goto err;
- }
-
- list_add(&n->head, &b->head);
- b->cur_size += size;
-
-err:
- pthread_mutex_unlock(&b->lock);
- return ret;
-}
-
-void __buffer_del(struct buffer *b, void *data)
-{
- struct buffer_node *n = container_of(data, struct buffer_node, data);
-
- list_del(&n->head);
- b->cur_size -= n->size;
- free(n);
-}
-
-void buffer_del(struct buffer *b, void *data)
-{
- pthread_mutex_lock(&b->lock);
- buffer_del(b, data);
- pthread_mutex_unlock(&b->lock);
-}
-
-void buffer_iterate(struct buffer *b,
- void *data,
- int (*iterate)(void *data1, void *data2))
-{
- struct list_head *i, *tmp;
- struct buffer_node *n;
-
- pthread_mutex_lock(&b->lock);
- list_for_each_safe(i, tmp, &b->head) {
- n = (struct buffer_node *) i;
- if (iterate(n->data, data))
- break;
- }
- pthread_mutex_unlock(&b->lock);
-}
diff --git a/daemon/src/cache.c b/daemon/src/cache.c
deleted file mode 100644
index 6f7442b..0000000
--- a/daemon/src/cache.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "jhash.h"
-#include "hash.h"
-#include "conntrackd.h"
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include "cache.h"
-#include "debug.h"
-
-static u_int32_t hash(const void *data, struct hashtable *table)
-{
- unsigned int a, b;
- const struct us_conntrack *u = data;
- struct nf_conntrack *ct = u->ct;
-
- a = jhash(nfct_get_attr(ct, ATTR_ORIG_IPV4_SRC), sizeof(u_int32_t),
- ((nfct_get_attr_u8(ct, ATTR_ORIG_L3PROTO) << 16) |
- (nfct_get_attr_u8(ct, ATTR_ORIG_L4PROTO))));
-
- b = jhash(nfct_get_attr(ct, ATTR_ORIG_IPV4_DST), sizeof(u_int32_t),
- ((nfct_get_attr_u16(ct, ATTR_ORIG_PORT_SRC) << 16) |
- (nfct_get_attr_u16(ct, ATTR_ORIG_PORT_DST))));
-
- return jhash_2words(a, b, 0) % table->hashsize;
-}
-
-static u_int32_t hash6(const void *data, struct hashtable *table)
-{
- unsigned int a, b;
- const struct us_conntrack *u = data;
- struct nf_conntrack *ct = u->ct;
-
- a = jhash(nfct_get_attr(ct, ATTR_ORIG_IPV6_SRC), sizeof(u_int32_t),
- ((nfct_get_attr_u8(ct, ATTR_ORIG_L3PROTO) << 16) |
- (nfct_get_attr_u8(ct, ATTR_ORIG_L4PROTO))));
-
- b = jhash(nfct_get_attr(ct, ATTR_ORIG_IPV6_DST), sizeof(u_int32_t),
- ((nfct_get_attr_u16(ct, ATTR_ORIG_PORT_SRC) << 16) |
- (nfct_get_attr_u16(ct, ATTR_ORIG_PORT_DST))));
-
- return jhash_2words(a, b, 0) % table->hashsize;
-}
-
-static int __compare(const struct nf_conntrack *ct1,
- const struct nf_conntrack *ct2)
-{
- return ((nfct_get_attr_u8(ct1, ATTR_ORIG_L3PROTO) ==
- nfct_get_attr_u8(ct2, ATTR_ORIG_L3PROTO)) &&
- (nfct_get_attr_u8(ct1, ATTR_ORIG_L4PROTO) ==
- nfct_get_attr_u8(ct2, ATTR_ORIG_L4PROTO)) &&
- (nfct_get_attr_u16(ct1, ATTR_ORIG_PORT_SRC) ==
- nfct_get_attr_u16(ct2, ATTR_ORIG_PORT_SRC)) &&
- (nfct_get_attr_u16(ct1, ATTR_ORIG_PORT_DST) ==
- nfct_get_attr_u16(ct2, ATTR_ORIG_PORT_DST)) &&
- (nfct_get_attr_u16(ct1, ATTR_REPL_PORT_SRC) ==
- nfct_get_attr_u16(ct2, ATTR_REPL_PORT_SRC)) &&
- (nfct_get_attr_u16(ct1, ATTR_REPL_PORT_DST) ==
- nfct_get_attr_u16(ct2, ATTR_REPL_PORT_DST)));
-}
-
-static int compare(const void *data1, const void *data2)
-{
- const struct us_conntrack *u1 = data1;
- const struct us_conntrack *u2 = data2;
-
- return ((nfct_get_attr_u32(u1->ct, ATTR_ORIG_IPV4_SRC) ==
- nfct_get_attr_u32(u2->ct, ATTR_ORIG_IPV4_SRC)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_ORIG_IPV4_DST) ==
- nfct_get_attr_u32(u2->ct, ATTR_ORIG_IPV4_DST)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_REPL_IPV4_SRC) ==
- nfct_get_attr_u32(u2->ct, ATTR_REPL_IPV4_SRC)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_REPL_IPV4_DST) ==
- nfct_get_attr_u32(u2->ct, ATTR_REPL_IPV4_DST)) &&
- __compare(u1->ct, u2->ct));
-}
-
-static int compare6(const void *data1, const void *data2)
-{
- const struct us_conntrack *u1 = data1;
- const struct us_conntrack *u2 = data2;
-
- return ((nfct_get_attr_u32(u1->ct, ATTR_ORIG_IPV6_SRC) ==
- nfct_get_attr_u32(u2->ct, ATTR_ORIG_IPV6_SRC)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_ORIG_IPV6_DST) ==
- nfct_get_attr_u32(u2->ct, ATTR_ORIG_IPV6_DST)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_REPL_IPV6_SRC) ==
- nfct_get_attr_u32(u2->ct, ATTR_REPL_IPV6_SRC)) &&
- (nfct_get_attr_u32(u1->ct, ATTR_REPL_IPV6_DST) ==
- nfct_get_attr_u32(u2->ct, ATTR_REPL_IPV6_DST)) &&
- __compare(u1->ct, u2->ct));
-}
-
-struct cache_feature *cache_feature[CACHE_MAX_FEATURE] = {
- [TIMER_FEATURE] = &timer_feature,
- [LIFETIME_FEATURE] = &lifetime_feature,
-};
-
-struct cache *cache_create(char *name,
- unsigned int features,
- u_int8_t proto,
- struct cache_extra *extra)
-{
- size_t size = sizeof(struct us_conntrack);
- int i, j = 0;
- struct cache *c;
- struct cache_feature *feature_array[CACHE_MAX_FEATURE] = {};
- unsigned int feature_offset[CACHE_MAX_FEATURE] = {};
- unsigned int feature_type[CACHE_MAX_FEATURE] = {};
-
- c = malloc(sizeof(struct cache));
- if (!c)
- return NULL;
- memset(c, 0, sizeof(struct cache));
-
- strcpy(c->name, name);
-
- for (i = 0; i < CACHE_MAX_FEATURE; i++) {
- if ((1 << i) & features) {
- feature_array[j] = cache_feature[i];
- feature_offset[j] = size;
- feature_type[i] = j;
- size += cache_feature[i]->size;
- j++;
- }
- }
-
- memcpy(c->feature_type, feature_type, sizeof(feature_type));
-
- c->features = malloc(sizeof(struct cache_feature) * j);
- if (!c->features) {
- free(c);
- return NULL;
- }
- memcpy(c->features, feature_array, sizeof(struct cache_feature) * j);
- c->num_features = j;
-
- c->extra_offset = size;
- c->extra = extra;
- if (extra)
- size += extra->size;
-
- c->feature_offset = malloc(sizeof(unsigned int) * j);
- if (!c->feature_offset) {
- free(c->features);
- free(c);
- return NULL;
- }
- memcpy(c->feature_offset, feature_offset, sizeof(unsigned int) * j);
-
- switch(proto) {
- case AF_INET:
- c->h = hashtable_create(CONFIG(hashsize),
- CONFIG(limit),
- size,
- hash,
- compare);
- break;
- case AF_INET6:
- c->h = hashtable_create(CONFIG(hashsize),
- CONFIG(limit),
- size,
- hash6,
- compare6);
- break;
- }
-
- if (!c->h) {
- free(c->features);
- free(c->feature_offset);
- free(c);
- return NULL;
- }
-
- return c;
-}
-
-void cache_destroy(struct cache *c)
-{
- lock();
- hashtable_destroy(c->h);
- unlock();
- free(c->features);
- free(c->feature_offset);
- free(c);
-}
-
-static struct us_conntrack *__add(struct cache *c, struct nf_conntrack *ct)
-{
- int i;
- size_t size = c->h->datasize;
- char buf[size];
- struct us_conntrack *u = (struct us_conntrack *) buf;
- struct nf_conntrack *newct;
-
- memset(u, 0, size);
-
- u->cache = c;
- if ((u->ct = newct = nfct_new()) == NULL) {
- errno = ENOMEM;
- return 0;
- }
- memcpy(u->ct, ct, nfct_sizeof(ct));
-
- u = hashtable_add(c->h, u);
- if (u) {
- void *data = u->data;
-
- for (i = 0; i < c->num_features; i++) {
- c->features[i]->add(u, data);
- data += c->features[i]->size;
- }
-
- if (c->extra)
- c->extra->add(u, ((void *) u) + c->extra_offset);
-
- return u;
- }
- free(newct);
-
- return NULL;
-}
-
-struct us_conntrack *__cache_add(struct cache *c, struct nf_conntrack *ct)
-{
- struct us_conntrack *u;
-
- u = __add(c, ct);
- if (u) {
- c->add_ok++;
- return u;
- }
- c->add_fail++;
-
- return NULL;
-}
-
-struct us_conntrack *cache_add(struct cache *c, struct nf_conntrack *ct)
-{
- struct us_conntrack *u;
-
- lock();
- u = __cache_add(c, ct);
- unlock();
-
- return u;
-}
-
-static struct us_conntrack *__update(struct cache *c, struct nf_conntrack *ct)
-{
- size_t size = c->h->datasize;
- char buf[size];
- struct us_conntrack *u = (struct us_conntrack *) buf;
-
- u->ct = ct;
-
- u = (struct us_conntrack *) hashtable_test(c->h, u);
- if (u) {
- int i;
- void *data = u->data;
-
- for (i = 0; i < c->num_features; i++) {
- c->features[i]->update(u, data);
- data += c->features[i]->size;
- }
-
- if (c->extra)
- c->extra->update(u, ((void *) u) + c->extra_offset);
-
- if (nfct_attr_is_set(ct, ATTR_STATUS))
- nfct_set_attr_u32(u->ct, ATTR_STATUS,
- nfct_get_attr_u32(ct, ATTR_STATUS));
- if (nfct_attr_is_set(ct, ATTR_TCP_STATE))
- nfct_set_attr_u8(u->ct, ATTR_TCP_STATE,
- nfct_get_attr_u8(ct, ATTR_TCP_STATE));
- if (nfct_attr_is_set(ct, ATTR_TIMEOUT))
- nfct_set_attr_u32(u->ct, ATTR_TIMEOUT,
- nfct_get_attr_u32(ct, ATTR_TIMEOUT));
-
- return u;
- }
- return NULL;
-}
-
-struct us_conntrack *__cache_update(struct cache *c, struct nf_conntrack *ct)
-{
- struct us_conntrack *u;
-
- u = __update(c, ct);
- if (u) {
- c->upd_ok++;
- return u;
- }
- c->upd_fail++;
-
- return NULL;
-}
-
-struct us_conntrack *cache_update(struct cache *c, struct nf_conntrack *ct)
-{
- struct us_conntrack *u;
-
- lock();
- u = __cache_update(c, ct);
- unlock();
-
- return u;
-}
-
-struct us_conntrack *cache_update_force(struct cache *c,
- struct nf_conntrack *ct)
-{
- struct us_conntrack *u;
-
- lock();
- if ((u = __update(c, ct)) != NULL) {
- c->upd_ok++;
- unlock();
- return u;
- }
- if ((u = __add(c, ct)) != NULL) {
- c->add_ok++;
- unlock();
- return u;
- }
- c->add_fail++;
- unlock();
- return NULL;
-}
-
-int cache_test(struct cache *c, struct nf_conntrack *ct)
-{
- size_t size = c->h->datasize;
- char buf[size];
- struct us_conntrack *u = (struct us_conntrack *) buf;
- void *ret;
-
- u->ct = ct;
-
- lock();
- ret = hashtable_test(c->h, u);
- unlock();
-
- return ret != NULL;
-}
-
-static int __del(struct cache *c, struct nf_conntrack *ct)
-{
- size_t size = c->h->datasize;
- char buf[size];
- struct us_conntrack *u = (struct us_conntrack *) buf;
-
- u->ct = ct;
-
- u = (struct us_conntrack *) hashtable_test(c->h, u);
- if (u) {
- int i;
- void *data = u->data;
- struct nf_conntrack *p = u->ct;
-
- for (i = 0; i < c->num_features; i++) {
- c->features[i]->destroy(u, data);
- data += c->features[i]->size;
- }
-
- if (c->extra)
- c->extra->destroy(u, ((void *) u) + c->extra_offset);
-
- hashtable_del(c->h, u);
- free(p);
- return 1;
- }
- return 0;
-}
-
-int __cache_del(struct cache *c, struct nf_conntrack *ct)
-{
- if (__del(c, ct)) {
- c->del_ok++;
- return 1;
- }
- c->del_fail++;
-
- return 0;
-}
-
-int cache_del(struct cache *c, struct nf_conntrack *ct)
-{
- int ret;
-
- lock();
- ret = __cache_del(c, ct);
- unlock();
-
- return ret;
-}
-
-struct us_conntrack *cache_get_conntrack(struct cache *c, void *data)
-{
- return data - c->extra_offset;
-}
-
-void *cache_get_extra(struct cache *c, void *data)
-{
- return data + c->extra_offset;
-}
-
-void cache_stats(struct cache *c, int fd)
-{
- char buf[512];
- int size;
-
- lock();
- size = sprintf(buf, "cache %s:\n"
- "current active connections:\t%12u\n"
- "connections created:\t\t%12u\tfailed:\t%12u\n"
- "connections updated:\t\t%12u\tfailed:\t%12u\n"
- "connections destroyed:\t\t%12u\tfailed:\t%12u\n\n",
- c->name,
- hashtable_counter(c->h),
- c->add_ok,
- c->add_fail,
- c->upd_ok,
- c->upd_fail,
- c->del_ok,
- c->del_fail);
- unlock();
- send(fd, buf, size, 0);
-}
diff --git a/daemon/src/cache_iterators.c b/daemon/src/cache_iterators.c
deleted file mode 100644
index 5d5d22b..0000000
--- a/daemon/src/cache_iterators.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "cache.h"
-#include "jhash.h"
-#include "hash.h"
-#include "conntrackd.h"
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include "debug.h"
-
-struct __dump_container {
- int fd;
- int type;
-};
-
-static int do_dump(void *data1, void *data2)
-{
- char buf[1024];
- int size;
- struct __dump_container *container = data1;
- struct us_conntrack *u = data2;
- void *data = u->data;
- int i;
-
- memset(buf, 0, sizeof(buf));
- size = nfct_snprintf(buf,
- sizeof(buf),
- u->ct,
- NFCT_T_UNKNOWN,
- container->type,
- 0);
-
- for (i = 0; i < u->cache->num_features; i++) {
- if (u->cache->features[i]->dump) {
- size += u->cache->features[i]->dump(u,
- data,
- buf+size,
- container->type);
- data += u->cache->features[i]->size;
- }
- }
- size += sprintf(buf+size, "\n");
- if (send(container->fd, buf, size, 0) == -1) {
- if (errno != EPIPE)
- return -1;
- }
-
- return 0;
-}
-
-void cache_dump(struct cache *c, int fd, int type)
-{
- struct __dump_container tmp = {
- .fd = fd,
- .type = type
- };
-
- lock();
- hashtable_iterate(c->h, (void *) &tmp, do_dump);
- unlock();
-}
-
-static int do_commit(void *data1, void *data2)
-{
- int ret;
- struct cache *c = data1;
- struct us_conntrack *u = data2;
- struct nf_conntrack *ct;
- char buf[4096];
- struct nlmsghdr *nlh = (struct nlmsghdr *)buf;
-
- ct = nfct_clone(u->ct);
- if (ct == NULL)
- return 0;
-
- if (nfct_attr_is_set(ct, ATTR_STATUS)) {
- u_int32_t status = nfct_get_attr_u32(ct, ATTR_STATUS);
- status &= ~IPS_EXPECTED;
- nfct_set_attr_u32(ct, ATTR_STATUS, status);
- }
-
- if (nfct_getobjopt(ct, NFCT_GOPT_IS_SNAT))
- nfct_setobjopt(ct, NFCT_SOPT_UNDO_SNAT);
- if (nfct_getobjopt(ct, NFCT_GOPT_IS_DNAT))
- nfct_setobjopt(ct, NFCT_SOPT_UNDO_DNAT);
- if (nfct_getobjopt(ct, NFCT_GOPT_IS_SPAT))
- nfct_setobjopt(ct, NFCT_SOPT_UNDO_SPAT);
- if (nfct_getobjopt(ct, NFCT_GOPT_IS_DPAT))
- nfct_setobjopt(ct, NFCT_SOPT_UNDO_DPAT);
-
- /*
- * Set a reduced timeout for candidate-to-be-committed
- * conntracks that live in the external cache
- */
- nfct_set_attr_u32(ct, ATTR_TIMEOUT, CONFIG(commit_timeout));
-
- ret = nfct_build_query(STATE(subsys_sync),
- NFCT_Q_CREATE,
- ct,
- nlh,
- sizeof(buf));
-
- free(ct);
-
- if (ret == -1) {
- /* XXX: Please cleanup this debug crap, default in logfile */
- debug("--- failed to build: %s --- \n", strerror(errno));
- return 0;
- }
-
- ret = nfnl_query(STATE(sync), nlh);
- if (ret == -1) {
- switch(errno) {
- case EEXIST:
- c->commit_exist++;
- break;
- default:
- c->commit_fail++;
- break;
- }
- debug("--- failed to commit: %s --- \n", strerror(errno));
- } else {
- c->commit_ok++;
- debug("----- commit -----\n");
- }
-
- /* keep iterating even if we have found errors */
- return 0;
-}
-
-void cache_commit(struct cache *c)
-{
- unsigned int commit_ok = c->commit_ok;
- unsigned int commit_exist = c->commit_exist;
- unsigned int commit_fail = c->commit_fail;
-
- lock();
- hashtable_iterate(c->h, c, do_commit);
- unlock();
-
- /* calculate new entries committed */
- commit_ok = c->commit_ok - commit_ok;
- commit_fail = c->commit_fail - commit_fail;
- commit_exist = c->commit_exist - commit_exist;
-
- /* log results */
- dlog(STATE(log), "Committed %u new entries", commit_ok);
-
- if (commit_exist)
- dlog(STATE(log), "%u entries ignored, "
- "already exist", commit_exist);
- if (commit_fail)
- dlog(STATE(log), "%u entries can't be "
- "committed", commit_fail);
-}
-
-static int do_flush(void *data1, void *data2)
-{
- struct cache *c = data1;
- struct us_conntrack *u = data2;
- void *data = u->data;
- int i;
-
- for (i = 0; i < c->num_features; i++) {
- c->features[i]->destroy(u, data);
- data += c->features[i]->size;
- }
- free(u->ct);
-
- return 0;
-}
-
-void cache_flush(struct cache *c)
-{
- lock();
- hashtable_iterate(c->h, c, do_flush);
- hashtable_flush(c->h);
- c->flush++;
- unlock();
-}
-
-#include "sync.h"
-#include "network.h"
-
-static int do_bulk(void *data1, void *data2)
-{
- int ret;
- struct us_conntrack *u = data2;
- char buf[4096];
- struct nlnetwork *net = (struct nlnetwork *) buf;
-
- ret = build_network_msg(NFCT_Q_UPDATE,
- STATE(subsys_sync),
- u->ct,
- buf,
- sizeof(buf));
- if (ret == -1)
- debug_ct(u->ct, "failed to build");
-
- mcast_send_netmsg(STATE_SYNC(mcast_client), net);
- STATE_SYNC(mcast_sync)->post_send(net, u);
-
- /* keep iterating even if we have found errors */
- return 0;
-}
-
-void cache_bulk(struct cache *c)
-{
- lock();
- hashtable_iterate(c->h, NULL, do_bulk);
- unlock();
-}
diff --git a/daemon/src/cache_lifetime.c b/daemon/src/cache_lifetime.c
deleted file mode 100644
index ae54df2..0000000
--- a/daemon/src/cache_lifetime.c
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdio.h>
-#include "conntrackd.h"
-#include "us-conntrack.h"
-#include "cache.h"
-#include "alarm.h"
-
-static void lifetime_add(struct us_conntrack *u, void *data)
-{
- long *lifetime = data;
- struct timeval tv;
-
- gettimeofday(&tv, NULL);
-
- *lifetime = tv.tv_sec;
-}
-
-static void lifetime_update(struct us_conntrack *u, void *data)
-{
-}
-
-static void lifetime_destroy(struct us_conntrack *u, void *data)
-{
-}
-
-static int lifetime_dump(struct us_conntrack *u,
- void *data,
- char *buf,
- int type)
-{
- long *lifetime = data;
- struct timeval tv;
-
- if (type == NFCT_O_XML)
- return 0;
-
- gettimeofday(&tv, NULL);
-
- return sprintf(buf, " [active since %lds]", tv.tv_sec - *lifetime);
-}
-
-struct cache_feature lifetime_feature = {
- .size = sizeof(long),
- .add = lifetime_add,
- .update = lifetime_update,
- .destroy = lifetime_destroy,
- .dump = lifetime_dump
-};
diff --git a/daemon/src/cache_timer.c b/daemon/src/cache_timer.c
deleted file mode 100644
index 213b59a..0000000
--- a/daemon/src/cache_timer.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdio.h>
-#include "conntrackd.h"
-#include "us-conntrack.h"
-#include "cache.h"
-#include "alarm.h"
-
-static void timeout(struct alarm_list *a, void *data)
-{
- struct us_conntrack *u = data;
-
- debug_ct(u->ct, "expired timeout");
- __cache_del(u->cache, u->ct);
-}
-
-static void timer_add(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
-
- init_alarm(alarm);
- set_alarm_expiration(alarm, CONFIG(cache_timeout));
- set_alarm_data(alarm, u);
- set_alarm_function(alarm, timeout);
- add_alarm(alarm);
-}
-
-static void timer_update(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
- mod_alarm(alarm, CONFIG(cache_timeout));
-}
-
-static void timer_destroy(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
- del_alarm(alarm);
-}
-
-static int timer_dump(struct us_conntrack *u, void *data, char *buf, int type)
-{
- struct alarm_list *alarm = data;
-
- if (type == NFCT_O_XML)
- return 0;
-
- return sprintf(buf, " [expires in %ds]", alarm->expires);
-}
-
-struct cache_feature timer_feature = {
- .size = sizeof(struct alarm_list),
- .add = timer_add,
- .update = timer_update,
- .destroy = timer_destroy,
- .dump = timer_dump
-};
diff --git a/daemon/src/checksum.c b/daemon/src/checksum.c
deleted file mode 100644
index 41866ff..0000000
--- a/daemon/src/checksum.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Extracted from RFC 1071 with some minor changes to fix compilation on GCC,
- * this can probably be improved
- * --pablo 11/feb/07
- */
-
-#include <conntrackd.h>
-
-unsigned short do_csum(const void *addr, unsigned int count)
-{
- unsigned int sum = 0;
-
- /* checksumming disabled, just skip */
- if (CONFIG(flags) & DONT_CHECKSUM)
- return 0;
-
- while(count > 1) {
- /* This is the inner loop */
- sum += *((unsigned short *) addr++);
- count -= 2;
- }
-
- /* Add left-over byte, if any */
- if(count > 0)
- sum += *((unsigned char *) addr);
-
- /* Fold 32-bit sum to 16 bits */
- while (sum>>16)
- sum = (sum & 0xffff) + (sum >> 16);
-
- return ~sum;
-}
diff --git a/daemon/src/hash.c b/daemon/src/hash.c
deleted file mode 100644
index 274a140..0000000
--- a/daemon/src/hash.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: generic hash table implementation
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <string.h>
-#include "slist.h"
-#include "hash.h"
-
-
-struct hashtable_node *hashtable_alloc_node(int datasize, void *data)
-{
- struct hashtable_node *n;
- int size = sizeof(struct hashtable_node) + datasize;
-
- n = malloc(size);
- if (!n)
- return NULL;
- memset(n, 0, size);
- memcpy(n->data, data, datasize);
-
- return n;
-}
-
-void hashtable_destroy_node(struct hashtable_node *h)
-{
- free(h);
-}
-
-struct hashtable *
-hashtable_create(int hashsize, int limit, int datasize,
- u_int32_t (*hash)(const void *data, struct hashtable *table),
- int (*compare)(const void *data1, const void *data2))
-{
- int i;
- struct hashtable *h;
- struct hashtype *t;
- int size = sizeof(struct hashtable)
- + hashsize * sizeof(struct slist_head);
-
- h = (struct hashtable *) malloc(size);
- if (!h) {
- errno = ENOMEM;
- return NULL;
- }
-
- memset(h, 0, size);
- for (i=0; i<hashsize; i++)
- INIT_SLIST_HEAD(h->members[i]);
-
- h->hashsize = hashsize;
- h->limit = limit;
- h->datasize = datasize;
- h->hash = hash;
- h->compare = compare;
-
- return h;
-}
-
-void hashtable_destroy(struct hashtable *h)
-{
- hashtable_flush(h);
- free(h);
-}
-
-void *hashtable_add(struct hashtable *table, void *data)
-{
- struct slist_head *e;
- struct hashtable_node *n;
- u_int32_t id;
- int i;
-
- /* hash table is full */
- if (table->count >= table->limit) {
- errno = ENOSPC;
- return NULL;
- }
-
- id = table->hash(data, table);
-
- slist_for_each(e, &table->members[id]) {
- n = slist_entry(e, struct hashtable_node, head);
- if (table->compare(n->data, data)) {
- errno = EEXIST;
- return NULL;
- }
- }
-
- n = hashtable_alloc_node(table->datasize, data);
- if (n == NULL) {
- errno = ENOMEM;
- return NULL;
- }
-
- slist_add(&table->members[id], &n->head);
- table->count++;
-
- return n->data;
-}
-
-void *hashtable_test(struct hashtable *table, const void *data)
-{
- struct slist_head *e;
- u_int32_t id;
- struct hashtable_node *n;
- int i;
-
- id = table->hash(data, table);
-
- slist_for_each(e, &table->members[id]) {
- n = slist_entry(e, struct hashtable_node, head);
- if (table->compare(n->data, data))
- return n->data;
- }
-
- errno = ENOENT;
- return NULL;
-}
-
-int hashtable_del(struct hashtable *table, void *data)
-{
- struct slist_head *e, *next, *prev;
- u_int32_t id;
- struct hashtable_node *n;
- int i;
-
- id = table->hash(data, table);
-
- slist_for_each_safe(e, prev, next, &table->members[id]) {
- n = slist_entry(e, struct hashtable_node, head);
- if (table->compare(n->data, data)) {
- slist_del(e, prev);
- hashtable_destroy_node(n);
- table->count--;
- return 0;
- }
- }
- errno = ENOENT;
- return -1;
-}
-
-int hashtable_flush(struct hashtable *table)
-{
- int i;
- struct slist_head *e, *next, *prev;
- struct hashtable_node *n;
-
- for (i=0; i < table->hashsize; i++)
- slist_for_each_safe(e, prev, next, &table->members[i]) {
- n = slist_entry(e, struct hashtable_node, head);
- slist_del(e, prev);
- hashtable_destroy_node(n);
- }
-
- table->count = 0;
-
- return 0;
-}
-
-int hashtable_iterate(struct hashtable *table, void *data,
- int (*iterate)(void *data1, void *data2))
-{
- int i;
- struct slist_head *e, *next, *prev;
- struct hashtable_node *n;
-
- for (i=0; i < table->hashsize; i++) {
- slist_for_each_safe(e, prev, next, &table->members[i]) {
- n = slist_entry(e, struct hashtable_node, head);
- if (iterate(data, n->data) == -1)
- return -1;
- }
- }
- return 0;
-}
-
-unsigned int hashtable_counter(struct hashtable *table)
-{
- return table->count;
-}
diff --git a/daemon/src/ignore_pool.c b/daemon/src/ignore_pool.c
deleted file mode 100644
index 5946617..0000000
--- a/daemon/src/ignore_pool.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "jhash.h"
-#include "hash.h"
-#include "conntrackd.h"
-#include "ignore.h"
-#include "debug.h"
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-
-#define IGNORE_POOL_SIZE 32
-#define IGNORE_POOL_LIMIT 1024
-
-static u_int32_t hash(const void *data, struct hashtable *table)
-{
- const u_int32_t *ip = data;
-
- return jhash_1word(*ip, 0) % table->hashsize;
-}
-
-static u_int32_t hash6(const void *data, struct hashtable *table)
-{
- return jhash(data, sizeof(u_int32_t)*4, 0) % table->hashsize;
-}
-
-static int compare(const void *data1, const void *data2)
-{
- const u_int32_t *ip1 = data1;
- const u_int32_t *ip2 = data2;
-
- return *ip1 == *ip2;
-}
-
-static int compare6(const void *data1, const void *data2)
-{
- return memcmp(data1, data2, sizeof(u_int32_t)*4) == 0;
-}
-
-struct ignore_pool *ignore_pool_create(u_int8_t proto)
-{
- int i, j = 0;
- struct ignore_pool *ip;
-
- ip = malloc(sizeof(struct ignore_pool));
- if (!ip)
- return NULL;
- memset(ip, 0, sizeof(struct ignore_pool));
-
- switch(proto) {
- case AF_INET:
- ip->h = hashtable_create(IGNORE_POOL_SIZE,
- IGNORE_POOL_LIMIT,
- sizeof(u_int32_t),
- hash,
- compare);
- break;
- case AF_INET6:
- ip->h = hashtable_create(IGNORE_POOL_SIZE,
- IGNORE_POOL_LIMIT,
- sizeof(u_int32_t)*4,
- hash6,
- compare6);
- break;
- }
-
- if (!ip->h) {
- free(ip);
- return NULL;
- }
-
- return ip;
-}
-
-void ignore_pool_destroy(struct ignore_pool *ip)
-{
- hashtable_destroy(ip->h);
- free(ip);
-}
-
-int ignore_pool_add(struct ignore_pool *ip, void *data)
-{
- if (!hashtable_add(ip->h, data))
- return 0;
-
- return 1;
-}
-
-int __ignore_pool_test_ipv4(struct ignore_pool *ip, struct nf_conntrack *ct)
-{
- return (hashtable_test(ip->h, nfct_get_attr(ct, ATTR_ORIG_IPV4_SRC)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_ORIG_IPV4_DST)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_REPL_IPV4_SRC)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_REPL_IPV4_DST)));
-}
-
-int __ignore_pool_test_ipv6(struct ignore_pool *ip, struct nf_conntrack *ct)
-{
- return (hashtable_test(ip->h, nfct_get_attr(ct, ATTR_ORIG_IPV6_SRC)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_ORIG_IPV6_DST)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_REPL_IPV6_SRC)) ||
- hashtable_test(ip->h, nfct_get_attr(ct, ATTR_REPL_IPV6_DST)));
-}
-
-int ignore_pool_test(struct ignore_pool *ip, struct nf_conntrack *ct)
-{
- int ret;
-
- switch(nfct_get_attr_u8(ct, ATTR_ORIG_L3PROTO)) {
- case AF_INET:
- ret = __ignore_pool_test_ipv4(ip, ct);
- break;
- case AF_INET6:
- ret = __ignore_pool_test_ipv6(ip, ct);
- break;
- default:
- dlog(STATE(log), "unknown conntrack layer 3 protocol?");
- break;
- }
-
- return ret;
-}
diff --git a/daemon/src/local.c b/daemon/src/local.c
deleted file mode 100644
index eef70ad..0000000
--- a/daemon/src/local.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: UNIX sockets library
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-#include <errno.h>
-#include "debug.h"
-
-#include "local.h"
-
-int local_server_create(struct local_conf *conf)
-{
- int fd;
- int len;
- struct sockaddr_un local;
-
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
- debug("local_server_create:socket");
- return -1;
- }
-
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &conf->reuseaddr,
- sizeof(conf->reuseaddr)) == -1) {
- debug("local_server_create:setsockopt");
- close(fd);
- return -1;
- }
-
- local.sun_family = AF_UNIX;
- strcpy(local.sun_path, conf->path);
- len = strlen(local.sun_path) + sizeof(local.sun_family);
- unlink(conf->path);
-
- if (bind(fd, (struct sockaddr *) &local, len) == -1) {
- debug("local_server_create:bind");
- close(fd);
- return -1;
- }
-
- if (listen(fd, conf->backlog) == -1) {
- close(fd);
- debug("local_server_create:listen");
- return -1;
- }
-
- return fd;
-}
-
-void local_server_destroy(int fd)
-{
- close(fd);
-}
-
-int do_local_server_step(int fd, void *data,
- void (*process)(int fd, void *data))
-{
- int rfd;
- struct sockaddr_un local;
- size_t sin_size = sizeof(struct sockaddr_un);
-
- if ((rfd = accept(fd, (struct sockaddr *)&local, &sin_size)) == -1) {
- debug("do_local_server_step:accept");
- return -1;
- }
-
- process(rfd, data);
- close(rfd);
-
- return 0;
-}
-
-int local_client_create(struct local_conf *conf)
-{
- int len;
- struct sockaddr_un local;
- int fd;
-
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
- return -1;
-
- local.sun_family = AF_UNIX;
- strcpy(local.sun_path, conf->path);
- len = strlen(local.sun_path) + sizeof(local.sun_family);
-
- if (connect(fd, (struct sockaddr *) &local, len) == -1) {
- close(fd);
- debug("local_client_create: connect: ");
- return -1;
- }
-
- return fd;
-}
-
-void local_client_destroy(int fd)
-{
- close(fd);
-}
-
-int do_local_client_step(int fd, void (*process)(char *buf))
-{
- int numbytes;
- char buf[1024];
-
- memset(buf, 0, sizeof(buf));
- while ((numbytes = recv(fd, buf, sizeof(buf)-1, 0)) > 0) {
- buf[sizeof(buf)-1] = '\0';
- if (process)
- process(buf);
- memset(buf, 0, sizeof(buf));
- }
-
- return 0;
-}
-
-void local_step(char *buf)
-{
- printf(buf);
-}
-
-int do_local_request(int request,
- struct local_conf *conf,
- void (*step)(char *buf))
-{
- int fd, ret;
-
- fd = local_client_create(conf);
- if (fd == -1)
- return -1;
-
- ret = send(fd, &request, sizeof(int), 0);
- if (ret == -1) {
- debug("send:");
- return -1;
- }
-
- do_local_client_step(fd, step);
-
- local_client_destroy(fd);
-
- return 0;
-}
diff --git a/daemon/src/lock.c b/daemon/src/lock.c
deleted file mode 100644
index cd68baf..0000000
--- a/daemon/src/lock.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdio.h>
-#include <pthread.h>
-
-static pthread_mutex_t global_lock = PTHREAD_MUTEX_INITIALIZER;
-
-void lock()
-{
- pthread_mutex_lock(&global_lock);
-}
-
-void unlock()
-{
- pthread_mutex_unlock(&global_lock);
-}
diff --git a/daemon/src/log.c b/daemon/src/log.c
deleted file mode 100644
index 88cadea..0000000
--- a/daemon/src/log.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: Logging support for the conntrack daemon
- */
-
-#include <stdio.h>
-#include <time.h>
-#include <stdarg.h>
-#include <string.h>
-
-FILE *init_log(char *filename)
-{
- FILE *fd;
-
- fd = fopen(filename, "a+");
- if (fd == NULL) {
- fprintf(stderr, "can't open log file `%s'\n", filename);
- return NULL;
- }
-
- return fd;
-}
-
-void dlog(FILE *fd, char *format, ...)
-{
- time_t t = time(NULL);
- char *buf = ctime(&t);
- va_list args;
-
- buf[strlen(buf)-1]='\0';
- va_start(args, format);
- fprintf(fd, "[%s] (pid=%d) ", buf, getpid());
- vfprintf(fd, format, args);
- va_end(args);
- fprintf(fd, "\n");
- fflush(fd);
-}
-
-void close_log(FILE *fd)
-{
- fclose(fd);
-}
diff --git a/daemon/src/main.c b/daemon/src/main.c
deleted file mode 100644
index 1c75970..0000000
--- a/daemon/src/main.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdlib.h>
-#include "conntrackd.h"
-#include "log.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/utsname.h>
-#include <linux/capability.h>
-#include <errno.h>
-#include "hash.h"
-#include "jhash.h"
-
-struct ct_general_state st;
-union ct_state state;
-
-static const char usage_daemon_commands[] =
- "Daemon mode commands:\n"
- " -d [options]\t\tRun in daemon mode\n"
- " -S [options]\t\tRun in statistics mode\n";
-
-static const char usage_client_commands[] =
- "Client mode commands:\n"
- " -c, commit external cache to conntrack table\n"
- " -f, flush internal and external cache\n"
- " -F, flush kernel conntrack table\n"
- " -i, display content of the internal cache\n"
- " -e, display the content of the external cache\n"
- " -k, kill conntrack daemon\n"
- " -s, dump statistics\n"
- " -R, resync with kernel conntrack table\n"
- " -n, request resync with other node (only NACK mode)\n"
- " -x, dump cache in XML format (requires -i or -e)";
-
-static const char usage_options[] =
- "Options:\n"
- " -C [configfile], configuration file path\n";
-
-void show_usage(char *progname)
-{
- fprintf(stdout, "Connection tracking userspace daemon v%s\n", VERSION);
- fprintf(stdout, "Usage: %s [commands] [options]\n\n", progname);
- fprintf(stdout, "%s\n", usage_daemon_commands);
- fprintf(stdout, "%s\n", usage_client_commands);
- fprintf(stdout, "%s\n", usage_options);
-}
-
-/* These live in run.c */
-int init(int);
-void run(void);
-
-void set_operation_mode(int *current, int want, char *argv[])
-{
- if (*current == NOT_SET) {
- *current = want;
- return;
- }
- if (*current != want) {
- show_usage(argv[0]);
- fprintf(stderr, "\nError: Invalid parameters\n");
- exit(EXIT_FAILURE);
- }
-}
-
-static int check_capabilities(void)
-{
- int ret;
- cap_user_header_t hcap;
- cap_user_data_t dcap;
-
- hcap = malloc(sizeof(cap_user_header_t));
- if (!hcap)
- return -1;
-
- hcap->version = _LINUX_CAPABILITY_VERSION;
- hcap->pid = getpid();
-
- dcap = malloc(sizeof(cap_user_data_t));
- if (!dcap) {
- free(hcap);
- return -1;
- }
-
- if (capget(hcap, dcap) == -1) {
- free(hcap);
- free(dcap);
- return -1;
- }
-
- ret = dcap->permitted & (1 << CAP_NET_ADMIN);
-
- free(hcap);
- free(dcap);
-
- return ret;
-}
-
-int main(int argc, char *argv[])
-{
- int ret, i, config_set = 0, action;
- char config_file[PATH_MAX];
- int type = 0, mode = 0;
- struct utsname u;
- int version, major, minor;
-
- /* Check kernel version: it must be >= 2.6.18 */
- if (uname(&u) == -1) {
- fprintf(stderr, "Can't retrieve kernel version via uname()\n");
- exit(EXIT_FAILURE);
- }
- sscanf(u.release, "%d.%d.%d", &version, &major, &minor);
- if (version < 2 && major < 6) {
- fprintf(stderr, "Linux kernel version must be >= 2.6.18\n");
- exit(EXIT_FAILURE);
- }
-
- if (major == 6 && minor < 18) {
- fprintf(stderr, "Linux kernel version must be >= 2.6.18\n");
- exit(EXIT_FAILURE);
- }
-
- ret = check_capabilities();
- switch (ret) {
- case -1:
- fprintf(stderr, "Can't get capabilities\n");
- exit(EXIT_FAILURE);
- break;
- case 0:
- fprintf(stderr, "You require CAP_NET_ADMIN in order "
- "to run conntrackd\n");
- exit(EXIT_FAILURE);
- break;
- default:
- break;
- }
-
- for (i=1; i<argc; i++) {
- switch(argv[i][1]) {
- case 'd':
- set_operation_mode(&type, DAEMON, argv);
- break;
- case 'c':
- set_operation_mode(&type, REQUEST, argv);
- action = COMMIT;
- break;
- case 'i':
- set_operation_mode(&type, REQUEST, argv);
- action = DUMP_INTERNAL;
- break;
- case 'e':
- set_operation_mode(&type, REQUEST, argv);
- action = DUMP_EXTERNAL;
- break;
- case 'C':
- if (++i < argc) {
- strncpy(config_file, argv[i], PATH_MAX);
- if (strlen(argv[i]) >= PATH_MAX){
- config_file[PATH_MAX-1]='\0';
- fprintf(stderr, "Path to config file "
- "to long. Cutting it "
- "down to %d characters",
- PATH_MAX);
- }
- config_set = 1;
- break;
- }
- show_usage(argv[0]);
- fprintf(stderr, "Missing config filename\n");
- break;
- case 'F':
- set_operation_mode(&type, REQUEST, argv);
- action = FLUSH_MASTER;
- case 'f':
- set_operation_mode(&type, REQUEST, argv);
- action = FLUSH_CACHE;
- break;
- case 'R':
- set_operation_mode(&type, REQUEST, argv);
- action = RESYNC_MASTER;
- break;
- case 'B':
- set_operation_mode(&type, REQUEST, argv);
- action = SEND_BULK;
- break;
- case 'k':
- set_operation_mode(&type, REQUEST, argv);
- action = KILL;
- break;
- case 's':
- set_operation_mode(&type, REQUEST, argv);
- action = STATS;
- break;
- case 'S':
- set_operation_mode(&mode, STATS_MODE, argv);
- break;
- case 'n':
- set_operation_mode(&type, REQUEST, argv);
- action = REQUEST_DUMP;
- break;
- case 'x':
- if (action == DUMP_INTERNAL)
- action = DUMP_INT_XML;
- else if (action == DUMP_EXTERNAL)
- action = DUMP_EXT_XML;
- else {
- show_usage(argv[0]);
- fprintf(stderr, "Error: Invalid parameters\n");
- exit(EXIT_FAILURE);
-
- }
- break;
- default:
- show_usage(argv[0]);
- fprintf(stderr, "Unknown option: %s\n", argv[i]);
- return 0;
- break;
- }
- }
-
- if (config_set == 0)
- strcpy(config_file, DEFAULT_CONFIGFILE);
-
- if ((ret = init_config(config_file)) == -1) {
- fprintf(stderr, "can't open config file `%s'\n", config_file);
- exit(EXIT_FAILURE);
- }
-
- /*
- * Setting up logfile
- */
- STATE(log) = init_log(CONFIG(logfile));
- if (!STATE(log)) {
- fprintf(stdout, "can't open logfile `%s\n'", CONFIG(logfile));
- exit(EXIT_FAILURE);
- }
-
- if (type == REQUEST) {
- if (do_local_request(action, &conf.local, local_step) == -1)
- fprintf(stderr, "can't connect: is conntrackd "
- "running? appropiate permissions?\n");
- exit(EXIT_SUCCESS);
- }
-
- /*
- * lock file
- */
- if ((ret = open(CONFIG(lockfile), O_CREAT | O_EXCL | O_TRUNC)) == -1) {
- fprintf(stderr, "lockfile `%s' exists, perhaps conntrackd "
- "already running?\n", CONFIG(lockfile));
- exit(EXIT_FAILURE);
- }
- close(ret);
-
- /* Daemonize conntrackd */
- if (type == DAEMON) {
- pid_t pid;
-
- if ((pid = fork()) == -1) {
- dlog(STATE(log), "fork() failed: "
- "%s", strerror(errno));
- exit(EXIT_FAILURE);
- } else if (pid)
- exit(EXIT_SUCCESS);
-
- dlog(STATE(log), "--- starting in daemon mode ---");
- } else
- dlog(STATE(log), "--- starting in console mode ---");
-
- /*
- * initialization process
- */
-
- if (init(mode) == -1) {
- close_log(STATE(log));
- fprintf(stderr, "ERROR: conntrackd cannot start, please "
- "check the logfile for more info\n");
- unlink(CONFIG(lockfile));
- exit(EXIT_FAILURE);
- }
-
- /*
- * run main process
- */
- run();
-}
diff --git a/daemon/src/mcast.c b/daemon/src/mcast.c
deleted file mode 100644
index 9904544..0000000
--- a/daemon/src/mcast.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: multicast socket library
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <string.h>
-#include "mcast.h"
-#include "debug.h"
-
-struct mcast_sock *mcast_server_create(struct mcast_conf *conf)
-{
- int yes = 1;
- union {
- struct ip_mreq ipv4;
- struct ipv6_mreq ipv6;
- } mreq;
- struct mcast_sock *m;
-
- m = (struct mcast_sock *) malloc(sizeof(struct mcast_sock));
- if (!m)
- return NULL;
- memset(m, 0, sizeof(struct mcast_sock));
-
- switch(conf->ipproto) {
- case AF_INET:
- mreq.ipv4.imr_multiaddr.s_addr = conf->in.inet_addr.s_addr;
- mreq.ipv4.imr_interface.s_addr =conf->ifa.interface_addr.s_addr;
-
- m->addr.ipv4.sin_family = AF_INET;
- m->addr.ipv4.sin_port = htons(conf->port);
- m->addr.ipv4.sin_addr.s_addr = htonl(INADDR_ANY);
- break;
-
- case AF_INET6:
- memcpy(&mreq.ipv6.ipv6mr_multiaddr, &conf->in.inet_addr6,
- sizeof(u_int32_t) * 4);
- memcpy(&mreq.ipv6.ipv6mr_interface, &conf->ifa.interface_addr6,
- sizeof(u_int32_t) * 4);
-
- m->addr.ipv6.sin6_family = AF_INET6;
- m->addr.ipv6.sin6_port = htons(conf->port);
- m->addr.ipv6.sin6_addr = in6addr_any;
- break;
- }
-
- if ((m->fd = socket(conf->ipproto, SOCK_DGRAM, 0)) == -1) {
- debug("mcast_sock_server_create:socket");
- free(m);
- return NULL;
- }
-
- if (setsockopt(m->fd, SOL_SOCKET, SO_REUSEADDR, &yes,
- sizeof(int)) == -1) {
- debug("mcast_sock_server_create:setsockopt1");
- close(m->fd);
- free(m);
- return NULL;
- }
-
- if (bind(m->fd, (struct sockaddr *) &m->addr,
- sizeof(struct sockaddr)) == -1) {
- debug("mcast_sock_server_create:bind");
- close(m->fd);
- free(m);
- return NULL;
- }
-
-
- switch(conf->ipproto) {
- case AF_INET:
- if (setsockopt(m->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- &mreq.ipv4, sizeof(mreq.ipv4)) < 0) {
- debug("mcast_sock_server_create:setsockopt2");
- close(m->fd);
- free(m);
- return NULL;
- }
- break;
- case AF_INET6:
- if (setsockopt(m->fd, IPPROTO_IPV6, IPV6_JOIN_GROUP,
- &mreq.ipv6, sizeof(mreq.ipv6)) < 0) {
- debug("mcast_sock_server_create:setsockopt2");
- close(m->fd);
- free(m);
- return NULL;
- }
- break;
- }
-
- return m;
-}
-
-void mcast_server_destroy(struct mcast_sock *m)
-{
- close(m->fd);
- free(m);
-}
-
-static int
-__mcast_client_create_ipv4(struct mcast_sock *m, struct mcast_conf *conf)
-{
- int no = 0;
-
- m->addr.ipv4.sin_family = AF_INET;
- m->addr.ipv4.sin_port = htons(conf->port);
- m->addr.ipv4.sin_addr = conf->in.inet_addr;
-
- if (setsockopt(m->fd, IPPROTO_IP, IP_MULTICAST_LOOP, &no,
- sizeof(int)) < 0) {
- debug("mcast_sock_client_create:setsockopt2");
- close(m->fd);
- return -1;
- }
-
- if (setsockopt(m->fd, IPPROTO_IP, IP_MULTICAST_IF,
- &conf->ifa.interface_addr,
- sizeof(struct in_addr)) == -1) {
- debug("mcast_sock_client_create:setsockopt3");
- close(m->fd);
- free(m);
- return -1;
- }
-
- return 0;
-}
-
-static int
-__mcast_client_create_ipv6(struct mcast_sock *m, struct mcast_conf *conf)
-{
- int no = 0;
-
- m->addr.ipv6.sin6_family = AF_INET6;
- m->addr.ipv6.sin6_port = htons(conf->port);
- memcpy(&m->addr.ipv6.sin6_addr,
- &conf->in.inet_addr6,
- sizeof(struct in6_addr));
-
- if (setsockopt(m->fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &no,
- sizeof(int)) < 0) {
- debug("mcast_sock_client_create:setsockopt2");
- close(m->fd);
- return -1;
- }
-
- if (setsockopt(m->fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
- &conf->ifa.interface_addr,
- sizeof(struct in_addr)) == -1) {
- debug("mcast_sock_client_create:setsockopt3");
- close(m->fd);
- free(m);
- return -1;
- }
-
- return 0;
-}
-
-struct mcast_sock *mcast_client_create(struct mcast_conf *conf)
-{
- int ret = 0;
- struct sockaddr_in addr;
- struct mcast_sock *m;
-
- m = (struct mcast_sock *) malloc(sizeof(struct mcast_sock));
- if (!m)
- return NULL;
- memset(m, 0, sizeof(struct mcast_sock));
-
- if ((m->fd = socket(conf->ipproto, SOCK_DGRAM, 0)) == -1) {
- debug("mcast_sock_client_create:socket");
- return NULL;
- }
-
- switch(conf->ipproto) {
- case AF_INET:
- ret = __mcast_client_create_ipv4(m, conf);
- break;
- case AF_INET6:
- ret = __mcast_client_create_ipv6(m, conf);
- break;
- default:
- break;
- }
-
- if (ret == -1) {
- free(m);
- m = NULL;
- }
-
- return m;
-}
-
-void mcast_client_destroy(struct mcast_sock *m)
-{
- close(m->fd);
- free(m);
-}
-
-int mcast_send(struct mcast_sock *m, void *data, int size)
-{
- int ret;
-
- ret = sendto(m->fd,
- data,
- size,
- 0,
- (struct sockaddr *) &m->addr,
- sizeof(struct sockaddr));
- if (ret == -1) {
- debug("mcast_sock_send");
- m->stats.error++;
- return ret;
- }
-
- m->stats.bytes += ret;
- m->stats.messages++;
-
- return ret;
-}
-
-int mcast_recv(struct mcast_sock *m, void *data, int size)
-{
- int ret;
- socklen_t sin_size = sizeof(struct sockaddr_in);
-
- ret = recvfrom(m->fd,
- data,
- size,
- 0,
- (struct sockaddr *)&m->addr,
- &sin_size);
- if (ret == -1) {
- debug("mcast_sock_recv");
- m->stats.error++;
- return ret;
- }
-
- m->stats.bytes += ret;
- m->stats.messages++;
-
- return ret;
-}
-
-struct mcast_stats *mcast_get_stats(struct mcast_sock *m)
-{
- return &m->stats;
-}
-
-void mcast_dump_stats(int fd, struct mcast_sock *s, struct mcast_sock *r)
-{
- char buf[512];
- int size;
-
- size = sprintf(buf, "multicast traffic:\n"
- "%20llu Bytes sent "
- "%20llu Bytes recv\n"
- "%20llu Pckts sent "
- "%20llu Pckts recv\n"
- "%20llu Error send "
- "%20llu Error recv\n\n",
- s->stats.bytes, r->stats.bytes,
- s->stats.messages, r->stats.messages,
- s->stats.error, r->stats.error);
-
- send(fd, buf, size, 0);
-}
diff --git a/daemon/src/netlink.c b/daemon/src/netlink.c
deleted file mode 100644
index 0bde632..0000000
--- a/daemon/src/netlink.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "conntrackd.h"
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include <signal.h>
-#include <stdlib.h>
-#include "network.h"
-
-static int ignore_conntrack(struct nf_conntrack *ct)
-{
- /* ignore a certain protocol */
- if (CONFIG(ignore_protocol)[nfct_get_attr_u8(ct, ATTR_ORIG_L4PROTO)])
- return 1;
-
- /* Accept DNAT'ed traffic: not really coming to the local machine */
- if ((CONFIG(flags) & STRIP_NAT) &&
- nfct_getobjopt(ct, NFCT_GOPT_IS_DNAT)) {
- debug_ct(ct, "DNAT");
- return 0;
- }
-
- /* Accept SNAT'ed traffic: not really coming to the local machine */
- if ((CONFIG(flags) & STRIP_NAT) &&
- nfct_getobjopt(ct, NFCT_GOPT_IS_SNAT)) {
- debug_ct(ct, "SNAT");
- return 0;
- }
-
- /* Ignore traffic */
- if (ignore_pool_test(STATE(ignore_pool), ct)) {
- debug_ct(ct, "ignore traffic");
- return 1;
- }
-
- return 0;
-}
-
-static int nl_event_handler(struct nlmsghdr *nlh,
- struct nfattr *nfa[],
- void *data)
-{
- char tmp[1024];
- struct nf_conntrack *ct = (struct nf_conntrack *) tmp;
- int type;
-
- memset(tmp, 0, sizeof(tmp));
-
- if ((type = nfct_parse_conntrack(NFCT_T_ALL, nlh, ct)) == NFCT_T_ERROR)
- return NFCT_CB_STOP;
-
- /*
- * Ignore this conntrack: it talks about a
- * connection that is not interesting for us.
- */
- if (ignore_conntrack(ct))
- return NFCT_CB_STOP;
-
- switch(type) {
- case NFCT_T_NEW:
- STATE(mode)->event_new(ct, nlh);
- break;
- case NFCT_T_UPDATE:
- STATE(mode)->event_upd(ct, nlh);
- break;
- case NFCT_T_DESTROY:
- if (STATE(mode)->event_dst(ct, nlh))
- update_traffic_stats(ct);
- break;
- default:
- dlog(STATE(log), "received unknown msg from ctnetlink\n");
- break;
- }
-
- return NFCT_CB_STOP;
-}
-
-int nl_init_event_handler(void)
-{
- struct nfnl_callback cb_events = {
- .call = nl_event_handler,
- .attr_count = CTA_MAX
- };
-
- /* open event netlink socket */
- STATE(event) = nfnl_open();
- if (!STATE(event))
- return -1;
-
- /* set up socket buffer size */
- if (CONFIG(netlink_buffer_size))
- nfnl_rcvbufsiz(STATE(event), CONFIG(netlink_buffer_size));
- else {
- socklen_t socklen = sizeof(unsigned int);
- unsigned int read_size;
-
- /* get current buffer size */
- getsockopt(nfnl_fd(STATE(event)), SOL_SOCKET,
- SO_RCVBUF, &read_size, &socklen);
-
- CONFIG(netlink_buffer_size) = read_size;
- }
-
- /* ensure that maximum grown size is >= than maximum size */
- if (CONFIG(netlink_buffer_size_max_grown) < CONFIG(netlink_buffer_size))
- CONFIG(netlink_buffer_size_max_grown) =
- CONFIG(netlink_buffer_size);
-
- /* open event subsystem */
- STATE(subsys_event) = nfnl_subsys_open(STATE(event),
- NFNL_SUBSYS_CTNETLINK,
- IPCTNL_MSG_MAX,
- NFCT_ALL_CT_GROUPS);
- if (STATE(subsys_event) == NULL)
- return -1;
-
- /* register callback for new and update events */
- nfnl_callback_register(STATE(subsys_event),
- IPCTNL_MSG_CT_NEW,
- &cb_events);
-
- /* register callback for delete events */
- nfnl_callback_register(STATE(subsys_event),
- IPCTNL_MSG_CT_DELETE,
- &cb_events);
-
- return 0;
-}
-
-static int nl_dump_handler(struct nlmsghdr *nlh,
- struct nfattr *nfa[],
- void *data)
-{
- char buf[1024];
- struct nf_conntrack *ct = (struct nf_conntrack *) buf;
- int type;
-
- memset(buf, 0, sizeof(buf));
-
- if ((type = nfct_parse_conntrack(NFCT_T_ALL, nlh, ct)) == NFCT_T_ERROR)
- return NFCT_CB_CONTINUE;
-
- /*
- * Ignore this conntrack: it talks about a
- * connection that is not interesting for us.
- */
- if (ignore_conntrack(ct))
- return NFCT_CB_CONTINUE;
-
- switch(type) {
- case NFCT_T_UPDATE:
- STATE(mode)->dump(ct, nlh);
- break;
- default:
- dlog(STATE(log), "received unknown msg from ctnetlink");
- break;
- }
- return NFCT_CB_CONTINUE;
-}
-
-int nl_init_dump_handler(void)
-{
- struct nfnl_callback cb_dump = {
- .call = nl_dump_handler,
- .attr_count = CTA_MAX
- };
-
- /* open dump netlink socket */
- STATE(dump) = nfnl_open();
- if (!STATE(dump))
- return -1;
-
- /* open dump subsystem */
- STATE(subsys_dump) = nfnl_subsys_open(STATE(dump),
- NFNL_SUBSYS_CTNETLINK,
- IPCTNL_MSG_MAX,
- 0);
- if (STATE(subsys_dump) == NULL)
- return -1;
-
- /* register callback for dumped entries */
- nfnl_callback_register(STATE(subsys_dump),
- IPCTNL_MSG_CT_NEW,
- &cb_dump);
-
- if (nl_dump_conntrack_table(STATE(dump), STATE(subsys_dump)) == -1)
- return -1;
-
- return 0;
-}
-
-static int nl_overrun_handler(struct nlmsghdr *nlh,
- struct nfattr *nfa[],
- void *data)
-{
- char buf[1024];
- struct nf_conntrack *ct = (struct nf_conntrack *) buf;
- int type;
-
- memset(buf, 0, sizeof(buf));
-
- if ((type = nfct_parse_conntrack(NFCT_T_ALL, nlh, ct)) == NFCT_T_ERROR)
- return NFCT_CB_CONTINUE;
-
- /*
- * Ignore this conntrack: it talks about a
- * connection that is not interesting for us.
- */
- if (ignore_conntrack(ct))
- return NFCT_CB_CONTINUE;
-
- switch(type) {
- case NFCT_T_UPDATE:
- if (STATE(mode)->overrun)
- STATE(mode)->overrun(ct, nlh);
- break;
- default:
- dlog(STATE(log), "received unknown msg from ctnetlink");
- break;
- }
- return NFCT_CB_CONTINUE;
-}
-
-int nl_init_overrun_handler(void)
-{
- struct nfnl_callback cb_sync = {
- .call = nl_overrun_handler,
- .attr_count = CTA_MAX
- };
-
- /* open sync netlink socket */
- STATE(sync) = nfnl_open();
- if (!STATE(sync))
- return -1;
-
- /* open synchronizer subsystem */
- STATE(subsys_sync) = nfnl_subsys_open(STATE(sync),
- NFNL_SUBSYS_CTNETLINK,
- IPCTNL_MSG_MAX,
- 0);
- if (STATE(subsys_sync) == NULL)
- return -1;
-
- /* register callback for dumped entries */
- nfnl_callback_register(STATE(subsys_sync),
- IPCTNL_MSG_CT_NEW,
- &cb_sync);
-
- return 0;
-}
-
-static int warned = 0;
-
-void nl_resize_socket_buffer(struct nfnl_handle *h)
-{
- unsigned int s = CONFIG(netlink_buffer_size) * 2;
-
- /* already warned that we have reached the maximum buffer size */
- if (warned)
- return;
-
- if (s > CONFIG(netlink_buffer_size_max_grown)) {
- dlog(STATE(log), "maximum netlink socket buffer size reached");
- s = CONFIG(netlink_buffer_size_max_grown);
- warned = 1;
- }
-
- CONFIG(netlink_buffer_size) = nfnl_rcvbufsiz(h, s);
-
- /* notify the sysadmin */
- dlog(STATE(log), "netlink socket buffer size has been set to %u bytes",
- CONFIG(netlink_buffer_size));
-}
-
-int nl_dump_conntrack_table(struct nfnl_handle *h,
- struct nfnl_subsys_handle *subsys)
-{
- struct nfnlhdr req;
-
- memset(&req, 0, sizeof(req));
- nfct_build_query(subsys,
- NFCT_Q_DUMP,
- &CONFIG(family),
- &req,
- sizeof(req));
-
- if (nfnl_query(h, &req.nlh) == -1)
- return -1;
-
- return 0;
-}
-
-int nl_flush_master_conntrack_table(void)
-{
- struct nfnlhdr req;
-
- memset(&req, 0, sizeof(req));
- nfct_build_query(STATE(subsys_sync),
- NFCT_Q_FLUSH,
- &CONFIG(family),
- &req,
- sizeof(req));
-
- if (nfnl_query(STATE(sync), &req.nlh) == -1)
- return -1;
-
- return 0;
-}
diff --git a/daemon/src/network.c b/daemon/src/network.c
deleted file mode 100644
index b9be318..0000000
--- a/daemon/src/network.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "conntrackd.h"
-#include "network.h"
-
-#if 0
-#define _TEST_DROP
-#else
-#undef _TEST_DROP
-#endif
-
-static int drop = 0; /* debugging purposes */
-static unsigned int seq_set, cur_seq;
-
-static int send_netmsg(struct mcast_sock *m, void *data, unsigned int len)
-{
- struct nlnetwork *net = data;
-
-#ifdef _TEST_DROP
- if (++drop > 10) {
- drop = 0;
- printf("dropping resend (seq=%u)\n", ntohl(net->seq));
- return 0;
- }
-#endif
- return mcast_send(m, net, len);
-}
-
-int mcast_send_netmsg(struct mcast_sock *m, void *data)
-{
- struct nlmsghdr *nlh = data + sizeof(struct nlnetwork);
- unsigned int len = nlh->nlmsg_len + sizeof(struct nlnetwork);
- struct nlnetwork *net = data;
-
- if (!seq_set) {
- seq_set = 1;
- cur_seq = time(NULL);
- net->flags |= NET_HELLO;
- }
-
- net->flags = htons(net->flags);
- net->seq = htonl(cur_seq++);
-
- if (nlh_host2network(nlh) == -1)
- return -1;
-
- net->checksum = 0;
- net->checksum = ntohs(do_csum(data, len));
-
- return send_netmsg(m, data, len);
-}
-
-int mcast_resend_netmsg(struct mcast_sock *m, void *data)
-{
- struct nlnetwork *net = data;
- struct nlmsghdr *nlh = data + sizeof(struct nlnetwork);
- unsigned int len = htonl(nlh->nlmsg_len) + sizeof(struct nlnetwork);
-
- net->flags = ntohs(net->flags);
-
- if (!seq_set) {
- seq_set = 1;
- cur_seq = time(NULL);
- net->flags |= NET_HELLO;
- }
-
- if (net->flags & NET_NACK || net->flags & NET_ACK) {
- struct nlnetwork_ack *nack = (struct nlnetwork_ack *) net;
- len = sizeof(struct nlnetwork_ack);
- }
-
- net->flags = htons(net->flags);
- net->seq = htonl(cur_seq++);
- net->checksum = 0;
- net->checksum = ntohs(do_csum(data, len));
-
- return send_netmsg(m, data, len);
-}
-
-int mcast_send_error(struct mcast_sock *m, void *data)
-{
- struct nlnetwork *net = data;
- unsigned int len = sizeof(struct nlnetwork);
-
- if (!seq_set) {
- seq_set = 1;
- cur_seq = time(NULL);
- net->flags |= NET_HELLO;
- }
-
- if (net->flags & NET_NACK || net->flags & NET_ACK) {
- struct nlnetwork_ack *nack = (struct nlnetwork_ack *) net;
- nack->from = htonl(nack->from);
- nack->to = htonl(nack->to);
- len = sizeof(struct nlnetwork_ack);
- }
-
- net->flags = htons(net->flags);
- net->seq = htonl(cur_seq++);
- net->checksum = 0;
- net->checksum = ntohs(do_csum(data, len));
-
- return send_netmsg(m, data, len);
-}
-
-static int valid_checksum(void *data, unsigned int len)
-{
- struct nlnetwork *net = data;
- unsigned short checksum, tmp;
-
- checksum = ntohs(net->checksum);
-
- /* no checksum, skip */
- if (!checksum)
- return 1;
-
- net->checksum = 0;
- tmp = do_csum(data, len);
-
- return tmp == checksum;
-}
-
-int mcast_recv_netmsg(struct mcast_sock *m, void *data, int len)
-{
- int ret;
- struct nlnetwork *net = data;
- struct nlmsghdr *nlh = data + sizeof(struct nlnetwork);
- struct nfgenmsg *nfhdr;
-
- ret = mcast_recv(m, net, len);
- if (ret <= 0)
- return ret;
-
- if (ret < sizeof(struct nlnetwork))
- return -1;
-
- if (!valid_checksum(data, ret))
- return -1;
-
- net->flags = ntohs(net->flags);
- net->seq = ntohl(net->seq);
-
- if (net->flags & NET_HELLO)
- STATE_SYNC(last_seq_recv) = net->seq-1;
-
- if (net->flags & NET_NACK || net->flags & NET_ACK) {
- struct nlnetwork_ack *nack = (struct nlnetwork_ack *) net;
-
- if (ret < sizeof(struct nlnetwork_ack))
- return -1;
-
- nack->from = ntohl(nack->from);
- nack->to = ntohl(nack->to);
-
- return ret;
- }
-
- if (net->flags & NET_RESYNC)
- return ret;
-
- /* information received is too small */
- if (ret < NLMSG_SPACE(sizeof(struct nfgenmsg)))
- return -1;
-
- /* information received and message length does not match */
- if (ret != ntohl(nlh->nlmsg_len) + sizeof(struct nlnetwork))
- return -1;
-
- /* this message does not come from ctnetlink */
- if (NFNL_SUBSYS_ID(ntohs(nlh->nlmsg_type)) != NFNL_SUBSYS_CTNETLINK)
- return -1;
-
- nfhdr = NLMSG_DATA(nlh);
-
- /* only AF_INET and AF_INET6 are supported */
- if (nfhdr->nfgen_family != AF_INET &&
- nfhdr->nfgen_family != AF_INET6)
- return -1;
-
- /* only process message coming from nfnetlink v0 */
- if (nfhdr->version != NFNETLINK_V0)
- return -1;
-
- if (nlh_network2host(nlh) == -1)
- return -1;
-
- return ret;
-}
-
-int mcast_track_seq(u_int32_t seq, u_int32_t *exp_seq)
-{
- static int seq_set = 0;
- int ret = 1;
-
- /* netlink sequence tracking initialization */
- if (!seq_set) {
- seq_set = 1;
- goto out;
- }
-
- /* fast path: we received the correct sequence */
- if (seq == STATE_SYNC(last_seq_recv)+1)
- goto out;
-
- /* out of sequence: some messages got lost */
- if (seq > STATE_SYNC(last_seq_recv)+1) {
- STATE_SYNC(packets_lost) += seq-STATE_SYNC(last_seq_recv)+1;
- ret = 0;
- goto out;
- }
-
- /* out of sequence: replayed or sequence wrapped around issues */
- if (seq < STATE_SYNC(last_seq_recv)+1) {
- /*
- * Check if the sequence has wrapped around.
- * Perhaps it can be a replayed packet.
- */
- if (STATE_SYNC(last_seq_recv)+1-seq > ~0U/2) {
- /*
- * Indeed, it is a wrapped around
- */
- STATE_SYNC(packets_lost) +=
- ~0U-STATE_SYNC(last_seq_recv)+1+seq;
- } else {
- /*
- * It is a delayed packet
- */
- dlog(STATE(log), "delayed packet? exp=%u rcv=%u",
- STATE_SYNC(last_seq_recv)+1, seq);
- }
- ret = 0;
- }
-
-out:
- *exp_seq = STATE_SYNC(last_seq_recv)+1;
- /* update expected sequence */
- STATE_SYNC(last_seq_recv) = seq;
-
- return ret;
-}
-
-int build_network_msg(const int msg_type,
- struct nfnl_subsys_handle *ssh,
- struct nf_conntrack *ct,
- void *buffer,
- unsigned int size)
-{
- memset(buffer, 0, size);
- buffer += sizeof(struct nlnetwork);
- return nfct_build_query(ssh, msg_type, ct, buffer, size);
-}
-
-unsigned int parse_network_msg(struct nf_conntrack *ct,
- const struct nlmsghdr *nlh)
-{
- /*
- * The parsing of netlink messages going through network is
- * similar to the one that is done for messages coming from
- * kernel, therefore do not replicate more code and use the
- * function provided in the libraries.
- *
- * Yup, this is a hack 8)
- */
- return nfct_parse_conntrack(NFCT_T_ALL, nlh, ct);
-}
-
diff --git a/daemon/src/proxy.c b/daemon/src/proxy.c
deleted file mode 100644
index b9bb04e..0000000
--- a/daemon/src/proxy.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-
-#if 0
-#define dprintf printf
-#else
-#define dprintf
-#endif
-
-int nlh_payload_host2network(struct nfattr *nfa, int len)
-{
- struct nfattr *__nfa;
-
- while (NFA_OK(nfa, len)) {
-
- dprintf("type=%d nfalen=%d len=%d [%s]\n",
- nfa->nfa_type & 0x7fff,
- nfa->nfa_len, len,
- nfa->nfa_type & NFNL_NFA_NEST ? "NEST":"");
-
- if (nfa->nfa_type & NFNL_NFA_NEST) {
- if (NFA_PAYLOAD(nfa) > len)
- return -1;
-
- if (nlh_payload_host2network(NFA_DATA(nfa),
- NFA_PAYLOAD(nfa)) == -1)
- return -1;
- }
-
- __nfa = NFA_NEXT(nfa, len);
-
- nfa->nfa_type = htons(nfa->nfa_type);
- nfa->nfa_len = htons(nfa->nfa_len);
-
- nfa = __nfa;
- }
- return 0;
-}
-
-int nlh_host2network(struct nlmsghdr *nlh)
-{
- struct nfgenmsg *nfhdr = NLMSG_DATA(nlh);
- struct nfattr *cda[CTA_MAX];
- unsigned int min_len = NLMSG_SPACE(sizeof(struct nfgenmsg));
- unsigned int len = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
-
- nlh->nlmsg_len = htonl(nlh->nlmsg_len);
- nlh->nlmsg_type = htons(nlh->nlmsg_type);
- nlh->nlmsg_flags = htons(nlh->nlmsg_flags);
- nlh->nlmsg_seq = htonl(nlh->nlmsg_seq);
- nlh->nlmsg_pid = htonl(nlh->nlmsg_pid);
-
- nfhdr->res_id = htons(nfhdr->res_id);
-
- return nlh_payload_host2network(NFM_NFA(NLMSG_DATA(nlh)), len);
-}
-
-int nlh_payload_network2host(struct nfattr *nfa, int len)
-{
- nfa->nfa_type = ntohs(nfa->nfa_type);
- nfa->nfa_len = ntohs(nfa->nfa_len);
-
- while(NFA_OK(nfa, len)) {
-
- dprintf("type=%d nfalen=%d len=%d [%s]\n",
- nfa->nfa_type & 0x7fff,
- nfa->nfa_len, len,
- nfa->nfa_type & NFNL_NFA_NEST ? "NEST":"");
-
- if (nfa->nfa_type & NFNL_NFA_NEST) {
- if (NFA_PAYLOAD(nfa) > len)
- return -1;
-
- if (nlh_payload_network2host(NFA_DATA(nfa),
- NFA_PAYLOAD(nfa)) == -1)
- return -1;
- }
-
- nfa = NFA_NEXT(nfa,len);
-
- if (len < NFA_LENGTH(0))
- break;
-
- nfa->nfa_type = ntohs(nfa->nfa_type);
- nfa->nfa_len = ntohs(nfa->nfa_len);
- }
- return 0;
-}
-
-int nlh_network2host(struct nlmsghdr *nlh)
-{
- struct nfgenmsg *nfhdr = NLMSG_DATA(nlh);
- struct nfattr *cda[CTA_MAX];
- unsigned int min_len = NLMSG_SPACE(sizeof(struct nfgenmsg));
- unsigned int len = ntohl(nlh->nlmsg_len) - NLMSG_ALIGN(min_len);
-
- nlh->nlmsg_len = ntohl(nlh->nlmsg_len);
- nlh->nlmsg_type = ntohs(nlh->nlmsg_type);
- nlh->nlmsg_flags = ntohs(nlh->nlmsg_flags);
- nlh->nlmsg_seq = ntohl(nlh->nlmsg_seq);
- nlh->nlmsg_pid = ntohl(nlh->nlmsg_pid);
-
- nfhdr->res_id = ntohs(nfhdr->res_id);
-
- return nlh_payload_network2host(NFM_NFA(NLMSG_DATA(nlh)), len);
-}
diff --git a/daemon/src/read_config_lex.l b/daemon/src/read_config_lex.l
deleted file mode 100644
index dee90c9..0000000
--- a/daemon/src/read_config_lex.l
+++ /dev/null
@@ -1,125 +0,0 @@
-%{
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: configuration file syntax
- */
-
-#include "read_config_yy.h"
-#include "conntrackd.h"
-%}
-
-%option yylineno
-%option nounput
-
-ws [ \t]+
-comment #.*$
-nl [\n\r]
-
-is_on [o|O][n|N]
-is_off [o|O][f|F][f|F]
-integer [0-9]+
-path \/[^\"\n ]*
-ip4_end [0-9]*[0-9]+
-ip4_part [0-2]*{ip4_end}
-ip4 {ip4_part}\.{ip4_part}\.{ip4_part}\.{ip4_part}
-hex_255 [0-9a-fA-F]{1,4}
-ip6_part {hex_255}":"?
-ip6_form1 {ip6_part}{0,16}"::"{ip6_part}{0,16}
-ip6_form2 ({hex_255}":"){16}{hex_255}
-ip6 {ip6_form1}|{ip6_form2}
-string [a-zA-Z]*
-persistent [P|p][E|e][R|r][S|s][I|i][S|s][T|t][E|e][N|n][T|T]
-nack [N|n][A|a][C|c][K|k]
-
-%%
-"UNIX" { return T_UNIX; }
-"IPv4_address" { return T_IPV4_ADDR; }
-"IPv6_address" { return T_IPV6_ADDR; }
-"IPv4_interface" { return T_IPV4_IFACE; }
-"IPv6_interface" { return T_IPV6_IFACE; }
-"Port" { return T_PORT; }
-"Multicast" { return T_MULTICAST; }
-"HashSize" { return T_HASHSIZE; }
-"RefreshTime" { return T_REFRESH; }
-"CacheTimeout" { return T_EXPIRE; }
-"CommitTimeout" { return T_TIMEOUT; }
-"DelayDestroyMessages" { return T_DELAY; }
-"HashLimit" { return T_HASHLIMIT; }
-"Path" { return T_PATH; }
-"IgnoreProtocol" { return T_IGNORE_PROTOCOL; }
-"UDP" { return T_UDP; }
-"ICMP" { return T_ICMP; }
-"VRRP" { return T_VRRP; }
-"IGMP" { return T_IGMP; }
-"TCP" { return T_TCP; }
-"IgnoreTrafficFor" { return T_IGNORE_TRAFFIC; }
-"StripNAT" { return T_STRIP_NAT; }
-"Backlog" { return T_BACKLOG; }
-"Group" { return T_GROUP; }
-"LogFile" { return T_LOG; }
-"LockFile" { return T_LOCK; }
-"General" { return T_GENERAL; }
-"Sync" { return T_SYNC; }
-"Stats" { return T_STATS; }
-"RelaxTransitions" { return T_RELAX_TRANSITIONS; }
-"SocketBufferSize" { return T_BUFFER_SIZE; }
-"SocketBufferSizeMaxGrown" { return T_BUFFER_SIZE_MAX_GROWN; }
-"SocketBufferSizeMaxGrowth" { return T_BUFFER_SIZE_MAX_GROWN; }
-"Mode" { return T_SYNC_MODE; }
-"ListenTo" { return T_LISTEN_TO; }
-"Family" { return T_FAMILY; }
-"ResendBufferSize" { return T_RESEND_BUFFER_SIZE; }
-"Checksum" { return T_CHECKSUM; }
-"ACKWindowSize" { return T_WINDOWSIZE; }
-"Replicate" { return T_REPLICATE; }
-"for" { return T_FOR; }
-"SYN_SENT" { return T_SYN_SENT; }
-"SYN_RECV" { return T_SYN_RECV; }
-"ESTABLISHED" { return T_ESTABLISHED; }
-"FIN_WAIT" { return T_FIN_WAIT; }
-"CLOSE_WAIT" { return T_CLOSE_WAIT; }
-"LAST_ACK" { return T_LAST_ACK; }
-"TIME_WAIT" { return T_TIME_WAIT; }
-"CLOSE" { return T_CLOSE; }
-"LISTEN" { return T_LISTEN; }
-
-{is_on} { return T_ON; }
-{is_off} { return T_OFF; }
-{integer} { yylval.val = atoi(yytext); return T_NUMBER; }
-{ip4} { yylval.string = strdup(yytext); return T_IP; }
-{ip6} { yylval.string = strdup(yytext); return T_IP; }
-{path} { yylval.string = strdup(yytext); return T_PATH_VAL; }
-{persistent} { return T_PERSISTENT; }
-{nack} { return T_NACK; }
-{string} { yylval.string = strdup(yytext); return T_STRING; }
-
-{comment} ;
-{ws} ;
-{nl} ;
-
-<<EOF>> { yyterminate(); }
-
-. { return yytext[0]; }
-
-%%
-
-int
-yywrap()
-{
- return 1;
-}
diff --git a/daemon/src/read_config_yy.y b/daemon/src/read_config_yy.y
deleted file mode 100644
index 1668919..0000000
--- a/daemon/src/read_config_yy.y
+++ /dev/null
@@ -1,550 +0,0 @@
-%{
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: configuration file abstract grammar
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include "conntrackd.h"
-#include "ignore.h"
-
-extern char *yytext;
-extern int yylineno;
-
-struct ct_conf conf;
-%}
-
-%union {
- int val;
- char *string;
-}
-
-%token T_IPV4_ADDR T_IPV4_IFACE T_PORT T_HASHSIZE T_HASHLIMIT T_MULTICAST
-%token T_PATH T_UNIX T_REFRESH T_IPV6_ADDR T_IPV6_IFACE
-%token T_IGNORE_UDP T_IGNORE_ICMP T_IGNORE_TRAFFIC T_BACKLOG T_GROUP
-%token T_LOG T_UDP T_ICMP T_IGMP T_VRRP T_TCP T_IGNORE_PROTOCOL
-%token T_LOCK T_STRIP_NAT T_BUFFER_SIZE_MAX_GROWN T_EXPIRE T_TIMEOUT
-%token T_GENERAL T_SYNC T_STATS T_RELAX_TRANSITIONS T_BUFFER_SIZE T_DELAY
-%token T_SYNC_MODE T_LISTEN_TO T_FAMILY T_RESEND_BUFFER_SIZE
-%token T_PERSISTENT T_NACK T_CHECKSUM T_WINDOWSIZE T_ON T_OFF
-%token T_REPLICATE T_FOR
-%token T_ESTABLISHED T_SYN_SENT T_SYN_RECV T_FIN_WAIT
-%token T_CLOSE_WAIT T_LAST_ACK T_TIME_WAIT T_CLOSE T_LISTEN
-
-
-%token <string> T_IP T_PATH_VAL
-%token <val> T_NUMBER
-%token <string> T_STRING
-
-%%
-
-configfile :
- | lines
- ;
-
-lines : line
- | lines line
- ;
-
-line : ignore_protocol
- | ignore_traffic
- | strip_nat
- | general
- | sync
- | stats
- ;
-
-log : T_LOG T_PATH_VAL
-{
- strncpy(conf.logfile, $2, FILENAME_MAXLEN);
-};
-
-lock : T_LOCK T_PATH_VAL
-{
- strncpy(conf.lockfile, $2, FILENAME_MAXLEN);
-};
-
-strip_nat: T_STRIP_NAT
-{
- conf.flags |= STRIP_NAT;
-};
-
-refreshtime : T_REFRESH T_NUMBER
-{
- conf.refresh = $2;
-};
-
-expiretime: T_EXPIRE T_NUMBER
-{
- conf.cache_timeout = $2;
-};
-
-timeout: T_TIMEOUT T_NUMBER
-{
- conf.commit_timeout = $2;
-};
-
-checksum: T_CHECKSUM T_ON
-{
-};
-
-checksum: T_CHECKSUM T_OFF
-{
- conf.flags |= DONT_CHECKSUM;
-};
-
-ignore_traffic : T_IGNORE_TRAFFIC '{' ignore_traffic_options '}';
-
-ignore_traffic_options :
- | ignore_traffic_options ignore_traffic_option;
-
-ignore_traffic_option : T_IPV4_ADDR T_IP
-{
- union inet_address ip;
- int family = 0;
-
- memset(&ip, 0, sizeof(union inet_address));
-
- if (inet_aton($2, &ip.ipv4))
- family = AF_INET;
-#ifdef HAVE_INET_PTON_IPV6
- else if (inet_pton(AF_INET6, $2, &ip.ipv6) > 0)
- family = AF_INET6;
-#endif
-
- if (!family) {
- fprintf(stdout, "%s is not a valid IP, ignoring", $2);
- return;
- }
-
- if (!STATE(ignore_pool)) {
- STATE(ignore_pool) = ignore_pool_create(family);
- if (!STATE(ignore_pool)) {
- fprintf(stdout, "Can't create ignore pool!\n");
- exit(EXIT_FAILURE);
- }
- }
-
- if (!ignore_pool_add(STATE(ignore_pool), &ip)) {
- if (errno == EEXIST)
- fprintf(stdout, "IP %s is repeated "
- "in the ignore pool\n", $2);
- if (errno == ENOSPC)
- fprintf(stdout, "Too many IP in the ignore pool!\n");
- }
-};
-
-multicast_line : T_MULTICAST '{' multicast_options '}';
-
-multicast_options :
- | multicast_options multicast_option;
-
-multicast_option : T_IPV4_ADDR T_IP
-{
- if (!inet_aton($2, &conf.mcast.in)) {
- fprintf(stderr, "%s is not a valid IPv4 address\n");
- return;
- }
-
- if (conf.mcast.ipproto == AF_INET6) {
- fprintf(stderr, "Your multicast address is IPv4 but "
- "is binded to an IPv6 interface? Surely "
- "this is not what you want\n");
- return;
- }
-
- conf.mcast.ipproto = AF_INET;
-};
-
-multicast_option : T_IPV6_ADDR T_IP
-{
-#ifdef HAVE_INET_PTON_IPV6
- if (inet_pton(AF_INET6, $2, &conf.mcast.in) <= 0)
- fprintf(stderr, "%s is not a valid IPv6 address\n", $2);
-#endif
-
- if (conf.mcast.ipproto == AF_INET) {
- fprintf(stderr, "Your multicast address is IPv6 but "
- "is binded to an IPv4 interface? Surely "
- "this is not what you want\n");
- return;
- }
-
- conf.mcast.ipproto = AF_INET6;
-};
-
-multicast_option : T_IPV4_IFACE T_IP
-{
- if (!inet_aton($2, &conf.mcast.ifa)) {
- fprintf(stderr, "%s is not a valid IPv4 address\n");
- return;
- }
-
- if (conf.mcast.ipproto == AF_INET6) {
- fprintf(stderr, "Your multicast interface is IPv4 but "
- "is binded to an IPv6 interface? Surely "
- "this is not what you want\n");
- return;
- }
-
- conf.mcast.ipproto = AF_INET;
-};
-
-multicast_option : T_IPV6_IFACE T_IP
-{
-#ifdef HAVE_INET_PTON_IPV6
- if (inet_pton(AF_INET6, $2, &conf.mcast.ifa) <= 0)
- fprintf(stderr, "%s is not a valid IPv6 address\n", $2);
-#endif
-
- if (conf.mcast.ipproto == AF_INET) {
- fprintf(stderr, "Your multicast interface is IPv6 but "
- "is binded to an IPv4 interface? Surely "
- "this is not what you want\n");
- return;
- }
-
- conf.mcast.ipproto = AF_INET6;
-};
-
-multicast_option : T_BACKLOG T_NUMBER
-{
- conf.mcast.backlog = $2;
-};
-
-multicast_option : T_GROUP T_NUMBER
-{
- conf.mcast.port = $2;
-};
-
-hashsize : T_HASHSIZE T_NUMBER
-{
- conf.hashsize = $2;
-};
-
-hashlimit: T_HASHLIMIT T_NUMBER
-{
- conf.limit = $2;
-};
-
-unix_line: T_UNIX '{' unix_options '}';
-
-unix_options:
- | unix_options unix_option
- ;
-
-unix_option : T_PATH T_PATH_VAL
-{
- strcpy(conf.local.path, $2);
-};
-
-unix_option : T_BACKLOG T_NUMBER
-{
- conf.local.backlog = $2;
-};
-
-ignore_protocol: T_IGNORE_PROTOCOL '{' ignore_proto_list '}';
-
-ignore_proto_list:
- | ignore_proto_list ignore_proto
- ;
-
-ignore_proto: T_NUMBER
-{
- if ($1 < IPPROTO_MAX)
- conf.ignore_protocol[$1] = 1;
- else
- fprintf(stdout, "Protocol number `%d' is freak\n", $1);
-};
-
-ignore_proto: T_UDP
-{
- conf.ignore_protocol[IPPROTO_UDP] = 1;
-};
-
-ignore_proto: T_ICMP
-{
- conf.ignore_protocol[IPPROTO_ICMP] = 1;
-};
-
-ignore_proto: T_VRRP
-{
- conf.ignore_protocol[IPPROTO_VRRP] = 1;
-};
-
-ignore_proto: T_IGMP
-{
- conf.ignore_protocol[IPPROTO_IGMP] = 1;
-};
-
-sync: T_SYNC '{' sync_list '}';
-
-sync_list:
- | sync_list sync_line;
-
-sync_line: refreshtime
- | expiretime
- | timeout
- | checksum
- | multicast_line
- | relax_transitions
- | delay_destroy_msgs
- | sync_mode_persistent
- | sync_mode_nack
- | listen_to
- | state_replication
- ;
-
-sync_mode_persistent: T_SYNC_MODE T_PERSISTENT '{' sync_mode_persistent_list '}'
-{
- conf.flags |= SYNC_MODE_PERSISTENT;
-};
-
-sync_mode_nack: T_SYNC_MODE T_NACK '{' sync_mode_nack_list '}'
-{
- conf.flags |= SYNC_MODE_NACK;
-};
-
-sync_mode_persistent_list:
- | sync_mode_persistent_list sync_mode_persistent_line;
-
-sync_mode_persistent_line: refreshtime
- | expiretime
- | timeout
- | relax_transitions
- | delay_destroy_msgs
- ;
-
-sync_mode_nack_list:
- | sync_mode_nack_list sync_mode_nack_line;
-
-sync_mode_nack_line: resend_buffer_size
- | timeout
- | window_size
- ;
-
-resend_buffer_size: T_RESEND_BUFFER_SIZE T_NUMBER
-{
- conf.resend_buffer_size = $2;
-};
-
-window_size: T_WINDOWSIZE T_NUMBER
-{
- conf.window_size = $2;
-};
-
-relax_transitions: T_RELAX_TRANSITIONS
-{
- conf.flags |= RELAX_TRANSITIONS;
-};
-
-delay_destroy_msgs: T_DELAY
-{
- conf.flags |= DELAY_DESTROY_MSG;
-};
-
-listen_to: T_LISTEN_TO T_IP
-{
- union inet_address addr;
-
-#ifdef HAVE_INET_PTON_IPV6
- if (inet_pton(AF_INET6, $2, &addr.ipv6) <= 0)
-#endif
- if (inet_aton($2, &addr.ipv4) <= 0) {
- fprintf(stderr, "%s is not a valid IP address\n", $2);
- exit(EXIT_FAILURE);
- }
-
- if (CONFIG(listen_to_len) == 0 || CONFIG(listen_to_len) % 16) {
- CONFIG(listen_to) = realloc(CONFIG(listen_to),
- sizeof(union inet_address) *
- (CONFIG(listen_to_len) + 16));
- if (CONFIG(listen_to) == NULL) {
- fprintf(stderr, "cannot init listen_to array\n");
- exit(EXIT_FAILURE);
- }
-
- memset(CONFIG(listen_to) +
- (CONFIG(listen_to_len) * sizeof(union inet_address)),
- 0, sizeof(union inet_address) * 16);
-
- }
-};
-
-state_replication: T_REPLICATE states T_FOR state_proto;
-
-states:
- | states state;
-
-state_proto: T_TCP;
-state: tcp_state;
-
-tcp_state: T_SYN_SENT
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_SYN_SENT);
-};
-tcp_state: T_SYN_RECV
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_SYN_RECV);
-};
-tcp_state: T_ESTABLISHED
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_ESTABLISHED);
-};
-tcp_state: T_FIN_WAIT
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_FIN_WAIT);
-};
-tcp_state: T_CLOSE_WAIT
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_CLOSE_WAIT);
-};
-tcp_state: T_LAST_ACK
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_LAST_ACK);
-};
-tcp_state: T_TIME_WAIT
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_TIME_WAIT);
-};
-tcp_state: T_CLOSE
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_CLOSE);
-};
-tcp_state: T_LISTEN
-{
- extern struct state_replication_helper tcp_state_helper;
- state_helper_register(&tcp_state_helper, TCP_CONNTRACK_LISTEN);
-};
-
-general: T_GENERAL '{' general_list '}';
-
-general_list:
- | general_list general_line
- ;
-
-general_line: hashsize
- | hashlimit
- | log
- | lock
- | unix_line
- | netlink_buffer_size
- | netlink_buffer_size_max_grown
- | family
- ;
-
-netlink_buffer_size: T_BUFFER_SIZE T_NUMBER
-{
- conf.netlink_buffer_size = $2;
-};
-
-netlink_buffer_size_max_grown : T_BUFFER_SIZE_MAX_GROWN T_NUMBER
-{
- conf.netlink_buffer_size_max_grown = $2;
-};
-
-family : T_FAMILY T_STRING
-{
- if (strncmp($2, "IPv6", strlen("IPv6")) == 0)
- conf.family = AF_INET6;
- else
- conf.family = AF_INET;
-};
-
-stats: T_SYNC '{' stats_list '}';
-
-stats_list:
- | stats_list stat_line
- ;
-
-stat_line:
- |
- ;
-
-%%
-
-int
-yyerror(char *msg)
-{
- printf("Error parsing config file: ");
- printf("line (%d), symbol '%s': %s\n", yylineno, yytext, msg);
- exit(EXIT_FAILURE);
-}
-
-int
-init_config(char *filename)
-{
- FILE *fp;
-
- fp = fopen(filename, "r");
- if (!fp)
- return -1;
-
- yyrestart(fp);
- yyparse();
- fclose(fp);
-
- /* default to IPv4 */
- if (CONFIG(family) == 0)
- CONFIG(family) = AF_INET;
-
- /* set to default is not specified */
- if (strcmp(CONFIG(lockfile), "") == 0)
- strncpy(CONFIG(lockfile), DEFAULT_LOCKFILE, FILENAME_MAXLEN);
-
- /* default to 180 seconds of expiration time: cache entries */
- if (CONFIG(cache_timeout) == 0)
- CONFIG(cache_timeout) = 180;
-
- /* default to 180 seconds: committed entries */
- if (CONFIG(commit_timeout) == 0)
- CONFIG(commit_timeout) = 180;
-
- /* default to 60 seconds of refresh time */
- if (CONFIG(refresh) == 0)
- CONFIG(refresh) = 60;
-
- if (CONFIG(resend_buffer_size) == 0)
- CONFIG(resend_buffer_size) = 262144;
-
- /* create empty pool */
- if (!STATE(ignore_pool)) {
- STATE(ignore_pool) = ignore_pool_create(CONFIG(family));
- if (!STATE(ignore_pool)) {
- fprintf(stdout, "Can't create ignore pool!\n");
- exit(EXIT_FAILURE);
- }
- }
-
- /* default to a window size of 20 packets */
- if (CONFIG(window_size) == 0)
- CONFIG(window_size) = 20;
-
- return 0;
-}
diff --git a/daemon/src/run.c b/daemon/src/run.c
deleted file mode 100644
index 67437d8..0000000
--- a/daemon/src/run.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Description: run and init functions
- */
-
-#include "conntrackd.h"
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include <signal.h>
-#include <stdlib.h>
-
-void killer(int foo)
-{
- /* no signals while handling signals */
- sigprocmask(SIG_BLOCK, &STATE(block), NULL);
-
- nfnl_subsys_close(STATE(subsys_event));
- nfnl_subsys_close(STATE(subsys_dump));
- nfnl_subsys_close(STATE(subsys_sync));
- nfnl_close(STATE(event));
- nfnl_close(STATE(dump));
- nfnl_close(STATE(sync));
-
- ignore_pool_destroy(STATE(ignore_pool));
- local_server_destroy(STATE(local));
- STATE(mode)->kill();
- unlink(CONFIG(lockfile));
- dlog(STATE(log), "------- shutdown received ----");
- close_log(STATE(log));
-
- sigprocmask(SIG_UNBLOCK, &STATE(block), NULL);
-
- exit(0);
-}
-
-void local_handler(int fd, void *data)
-{
- int ret;
- int type;
-
- ret = read(fd, &type, sizeof(type));
- if (ret == -1) {
- dlog(STATE(log), "can't read from unix socket\n");
- return;
- }
- if (ret == 0) {
- debug("nothing to process\n");
- return;
- }
-
- switch(type) {
- case FLUSH_MASTER:
- dlog(STATE(log), "[REQ] flushing master table");
- nl_flush_master_conntrack_table();
- return;
- case RESYNC_MASTER:
- dlog(STATE(log), "[REQ] resync with master table");
- nl_dump_conntrack_table(STATE(dump), STATE(subsys_dump));
- return;
- }
-
- if (!STATE(mode)->local(fd, type, data))
- dlog(STATE(log), "[FAIL] unknown local request %d", type);
-}
-
-int init(int mode)
-{
- switch(mode) {
- case STATS_MODE:
- STATE(mode) = &stats_mode;
- break;
- case SYNC_MODE:
- STATE(mode) = &sync_mode;
- break;
- default:
- fprintf(stderr, "Unknown running mode! default "
- "to synchronization mode\n");
- STATE(mode) = &sync_mode;
- break;
- }
-
- /* Initialization */
- if (STATE(mode)->init() == -1) {
- dlog(STATE(log), "[FAIL] initialization failed");
- return -1;
- }
-
- /* local UNIX socket */
- STATE(local) = local_server_create(&CONFIG(local));
- if (!STATE(local)) {
- dlog(STATE(log), "[FAIL] can't open unix socket!");
- return -1;
- }
-
- if (nl_init_event_handler() == -1) {
- dlog(STATE(log), "[FAIL] can't open netlink handler! "
- "no ctnetlink kernel support?");
- return -1;
- }
-
- if (nl_init_dump_handler() == -1) {
- dlog(STATE(log), "[FAIL] can't open netlink handler! "
- "no ctnetlink kernel support?");
- return -1;
- }
-
- if (nl_init_overrun_handler() == -1) {
- dlog(STATE(log), "[FAIL] can't open netlink handler! "
- "no ctnetlink kernel support?");
- return -1;
- }
-
- /* Signals handling */
- sigemptyset(&STATE(block));
- sigaddset(&STATE(block), SIGTERM);
- sigaddset(&STATE(block), SIGINT);
-
- if (signal(SIGINT, killer) == SIG_ERR)
- return -1;
-
- if (signal(SIGTERM, killer) == SIG_ERR)
- return -1;
-
- /* ignore connection reset by peer */
- if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
- return -1;
-
- dlog(STATE(log), "[OK] initialization completed");
-
- return 0;
-}
-
-#define POLL_NSECS 1
-
-static void __run(void)
-{
- int max, ret;
- fd_set readfds;
- struct timeval tv = {
- .tv_sec = POLL_NSECS,
- .tv_usec = 0
- };
-
- FD_ZERO(&readfds);
- FD_SET(STATE(local), &readfds);
- FD_SET(nfnl_fd(STATE(event)), &readfds);
-
- max = MAX(STATE(local), nfnl_fd(STATE(event)));
-
- if (STATE(mode)->add_fds_to_set)
- max = MAX(max, STATE(mode)->add_fds_to_set(&readfds));
-
- ret = select(max+1, &readfds, NULL, NULL, &tv);
- if (ret == -1) {
- /* interrupted syscall, retry */
- if (errno == EINTR)
- return;
-
- dlog(STATE(log), "select() failed: %s", strerror(errno));
- return;
- }
-
- /* signals are racy */
- sigprocmask(SIG_BLOCK, &STATE(block), NULL);
-
- /* order received via UNIX socket */
- if (FD_ISSET(STATE(local), &readfds))
- do_local_server_step(STATE(local), NULL, local_handler);
-
- /* conntrack event has happened */
- if (FD_ISSET(nfnl_fd(STATE(event)), &readfds)) {
- ret = nfnl_catch(STATE(event));
- if (ret == -1) {
- switch(errno) {
- case ENOBUFS:
- /*
- * It seems that ctnetlink can't back off,
- * it's likely that we're losing events.
- * Solution: duplicate the socket buffer
- * size and resync with master conntrack table.
- */
- nl_resize_socket_buffer(STATE(event));
- nl_dump_conntrack_table(STATE(sync),
- STATE(subsys_sync));
- break;
- case ENOENT:
- /*
- * We received a message from another
- * netfilter subsystem that we are not
- * interested in. Just ignore it.
- */
- break;
- default:
- dlog(STATE(log), "event catch says: %s",
- strerror(errno));
- break;
- }
- }
- }
-
- if (STATE(mode)->step)
- STATE(mode)->step(&readfds);
-
- sigprocmask(SIG_UNBLOCK, &STATE(block), NULL);
-}
-
-void run(void)
-{
- while(1)
- __run();
-}
diff --git a/daemon/src/state_helper.c b/daemon/src/state_helper.c
deleted file mode 100644
index 81b0d09..0000000
--- a/daemon/src/state_helper.c
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "conntrackd.h"
-#include "state_helper.h"
-
-static struct state_replication_helper *helper[IPPROTO_MAX];
-
-int state_helper_verdict(int type, struct nf_conntrack *ct)
-{
- u_int8_t l4proto;
-
- if (type == NFCT_T_DESTROY)
- return ST_H_REPLICATE;
-
- l4proto = nfct_get_attr_u8(ct, ATTR_ORIG_L4PROTO);
- if (helper[l4proto])
- return helper[l4proto]->verdict(helper[l4proto], ct);
-
- return ST_H_REPLICATE;
-}
-
-void state_helper_register(struct state_replication_helper *h, int state)
-{
- if (helper[h->proto] == NULL)
- helper[h->proto] = h;
-
- helper[h->proto]->state |= (1 << state);
-}
diff --git a/daemon/src/state_helper_tcp.c b/daemon/src/state_helper_tcp.c
deleted file mode 100644
index af714dc..0000000
--- a/daemon/src/state_helper_tcp.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "conntrackd.h"
-#include "state_helper.h"
-
-static int tcp_verdict(const struct state_replication_helper *h,
- const struct nf_conntrack *ct)
-{
- u_int8_t state = nfct_get_attr_u8(ct, ATTR_TCP_STATE);
- if (h->state & (1 << state))
- return ST_H_REPLICATE;
-
- return ST_H_SKIP;
-}
-
-struct state_replication_helper tcp_state_helper = {
- .proto = IPPROTO_TCP,
- .verdict = tcp_verdict,
-};
diff --git a/daemon/src/stats-mode.c b/daemon/src/stats-mode.c
deleted file mode 100644
index 9647bbf..0000000
--- a/daemon/src/stats-mode.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdlib.h>
-#include "cache.h"
-#include "conntrackd.h"
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include <signal.h>
-#include <sys/select.h>
-
-static int init_stats(void)
-{
- int ret;
-
- state.stats = malloc(sizeof(struct ct_stats_state));
- if (!state.stats) {
- dlog(STATE(log), "[FAIL] can't allocate memory for stats sync");
- return -1;
- }
- memset(state.stats, 0, sizeof(struct ct_stats_state));
-
- STATE_STATS(cache) = cache_create("stats",
- LIFETIME,
- CONFIG(family),
- NULL);
- if (!STATE_STATS(cache)) {
- dlog(STATE(log), "[FAIL] can't allocate memory for the "
- "external cache");
- return -1;
- }
-
- return 0;
-}
-
-static void kill_stats()
-{
- cache_destroy(STATE_STATS(cache));
-}
-
-/* handler for requests coming via UNIX socket */
-static int local_handler_stats(int fd, int type, void *data)
-{
- int ret = 1;
-
- switch(type) {
- case DUMP_INTERNAL:
- cache_dump(STATE_STATS(cache), fd, NFCT_O_PLAIN);
- break;
- case DUMP_INT_XML:
- cache_dump(STATE_SYNC(internal), fd, NFCT_O_XML);
- break;
- case FLUSH_CACHE:
- dlog(STATE(log), "[REQ] flushing caches");
- cache_flush(STATE_STATS(cache));
- break;
- case KILL:
- killer();
- break;
- case STATS:
- cache_stats(STATE_STATS(cache), fd);
- dump_traffic_stats(fd);
- break;
- default:
- ret = 0;
- break;
- }
-
- return ret;
-}
-
-static void dump_stats(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- if (cache_update_force(STATE_STATS(cache), ct))
- debug_ct(ct, "resync entry");
-}
-
-static void event_new_stats(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- debug_ct(ct, "debug event");
- if (cache_add(STATE_STATS(cache), ct)) {
- debug_ct(ct, "cache new");
- } else {
- dlog(STATE(log), "can't add to cache cache: "
- "%s\n", strerror(errno));
- debug_ct(ct, "can't add");
- }
-}
-
-static void event_update_stats(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- debug_ct(ct, "update");
-
- if (!cache_update(STATE_STATS(cache), ct)) {
- /*
- * Perhaps we are losing events. If we are working
- * in relax mode then add a new entry to the cache.
- *
- * FIXME: relax transitions not implemented yet
- */
- if ((CONFIG(flags) & RELAX_TRANSITIONS)
- && cache_add(STATE_STATS(cache), ct)) {
- debug_ct(ct, "forcing cache update");
- } else {
- debug_ct(ct, "can't update");
- return;
- }
- }
- debug_ct(ct, "update");
-}
-
-static int event_destroy_stats(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- if (cache_del(STATE_STATS(cache), ct)) {
- debug_ct(ct, "cache destroy");
- return 1;
- } else {
- debug_ct(ct, "can't destroy!");
- return 0;
- }
-}
-
-struct ct_mode stats_mode = {
- .init = init_stats,
- .add_fds_to_set = NULL,
- .step = NULL,
- .local = local_handler_stats,
- .kill = kill_stats,
- .dump = dump_stats,
- .overrun = dump_stats,
- .event_new = event_new_stats,
- .event_upd = event_update_stats,
- .event_dst = event_destroy_stats
-};
diff --git a/daemon/src/sync-mode.c b/daemon/src/sync-mode.c
deleted file mode 100644
index b32bef7..0000000
--- a/daemon/src/sync-mode.c
+++ /dev/null
@@ -1,416 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdlib.h>
-#include "cache.h"
-#include "conntrackd.h"
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include <signal.h>
-#include <sys/select.h>
-#include "sync.h"
-#include "network.h"
-
-/* handler for multicast messages received */
-static void mcast_handler()
-{
- int ret;
- char buf[4096], tmp[256];
- struct mcast_sock *m = STATE_SYNC(mcast_server);
- unsigned int type;
- struct nlnetwork *net = (struct nlnetwork *) buf;
- unsigned int size = sizeof(struct nlnetwork);
- struct nlmsghdr *nlh = (struct nlmsghdr *) (buf + size);
- struct nf_conntrack *ct = (struct nf_conntrack *) tmp;
- struct us_conntrack *u = NULL;
-
- memset(tmp, 0, sizeof(tmp));
-
- ret = mcast_recv_netmsg(m, buf, sizeof(buf));
- if (ret <= 0) {
- STATE(malformed)++;
- return;
- }
-
- if (STATE_SYNC(mcast_sync)->pre_recv(net))
- return;
-
- if ((type = parse_network_msg(ct, nlh)) == NFCT_T_ERROR) {
- STATE(malformed)++;
- return;
- }
-
- nfct_attr_unset(ct, ATTR_TIMEOUT);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
-
- switch(type) {
- case NFCT_T_NEW:
-retry:
- if ((u = cache_add(STATE_SYNC(external), ct))) {
- debug_ct(u->ct, "external new");
- } else {
- /*
- * One certain connection A arrives to the cache but
- * another existing connection B in the cache has
- * the same configuration, therefore B clashes with A.
- */
- if (errno == EEXIST) {
- cache_del(STATE_SYNC(external), ct);
- goto retry;
- }
- debug_ct(ct, "can't add");
- }
- break;
- case NFCT_T_UPDATE:
- if ((u = cache_update_force(STATE_SYNC(external), ct))) {
- debug_ct(u->ct, "external update");
- } else
- debug_ct(ct, "can't update");
- break;
- case NFCT_T_DESTROY:
- if (cache_del(STATE_SYNC(external), ct))
- debug_ct(ct, "external destroy");
- else
- debug_ct(ct, "can't destroy");
- break;
- default:
- debug("unknown type %d\n", type);
- break;
- }
-}
-
-static int init_sync(void)
-{
- int ret;
-
- state.sync = malloc(sizeof(struct ct_sync_state));
- if (!state.sync) {
- dlog(STATE(log), "[FAIL] can't allocate memory for state sync");
- return -1;
- }
- memset(state.sync, 0, sizeof(struct ct_sync_state));
-
- if (CONFIG(flags) & SYNC_MODE_NACK)
- STATE_SYNC(mcast_sync) = &nack;
- else
- /* default to persistent mode */
- STATE_SYNC(mcast_sync) = &notrack;
-
- if (STATE_SYNC(mcast_sync)->init)
- STATE_SYNC(mcast_sync)->init();
-
- STATE_SYNC(internal) =
- cache_create("internal",
- STATE_SYNC(mcast_sync)->internal_cache_flags,
- CONFIG(family),
- STATE_SYNC(mcast_sync)->internal_cache_extra);
-
- if (!STATE_SYNC(internal)) {
- dlog(STATE(log), "[FAIL] can't allocate memory for "
- "the internal cache");
- return -1;
- }
-
- STATE_SYNC(external) =
- cache_create("external",
- STATE_SYNC(mcast_sync)->external_cache_flags,
- CONFIG(family),
- NULL);
-
- if (!STATE_SYNC(external)) {
- dlog(STATE(log), "[FAIL] can't allocate memory for the "
- "external cache");
- return -1;
- }
-
- /* multicast server to receive events from the wire */
- STATE_SYNC(mcast_server) = mcast_server_create(&CONFIG(mcast));
- if (STATE_SYNC(mcast_server) == NULL) {
- dlog(STATE(log), "[FAIL] can't open multicast server!");
- return -1;
- }
-
- /* multicast client to send events on the wire */
- STATE_SYNC(mcast_client) = mcast_client_create(&CONFIG(mcast));
- if (STATE_SYNC(mcast_client) == NULL) {
- dlog(STATE(log), "[FAIL] can't open client multicast socket!");
- return -1;
- }
-
- /* initialization of multicast sequence generation */
- STATE_SYNC(last_seq_sent) = time(NULL);
-
- if (create_alarm_thread() == -1) {
- dlog(STATE(log), "[FAIL] can't initialize alarm thread");
- return -1;
- }
-
- return 0;
-}
-
-static int add_fds_to_set_sync(fd_set *readfds)
-{
- FD_SET(STATE_SYNC(mcast_server->fd), readfds);
-
- return STATE_SYNC(mcast_server->fd);
-}
-
-static void step_sync(fd_set *readfds)
-{
- /* multicast packet has been received */
- if (FD_ISSET(STATE_SYNC(mcast_server->fd), readfds))
- mcast_handler();
-}
-
-static void kill_sync()
-{
- cache_destroy(STATE_SYNC(internal));
- cache_destroy(STATE_SYNC(external));
-
- mcast_server_destroy(STATE_SYNC(mcast_server));
- mcast_client_destroy(STATE_SYNC(mcast_client));
-
- destroy_alarm_thread();
-
- if (STATE_SYNC(mcast_sync)->kill)
- STATE_SYNC(mcast_sync)->kill();
-}
-
-static dump_stats_sync(int fd)
-{
- char buf[512];
- int size;
-
- size = sprintf(buf, "multicast sequence tracking:\n"
- "%20llu Pckts mfrm "
- "%20llu Pckts lost\n\n",
- STATE(malformed),
- STATE_SYNC(packets_lost));
-
- send(fd, buf, size, 0);
-}
-
-/* handler for requests coming via UNIX socket */
-static int local_handler_sync(int fd, int type, void *data)
-{
- int ret = 1;
-
- switch(type) {
- case DUMP_INTERNAL:
- cache_dump(STATE_SYNC(internal), fd, NFCT_O_PLAIN);
- break;
- case DUMP_EXTERNAL:
- cache_dump(STATE_SYNC(external), fd, NFCT_O_PLAIN);
- break;
- case DUMP_INT_XML:
- cache_dump(STATE_SYNC(internal), fd, NFCT_O_XML);
- break;
- case DUMP_EXT_XML:
- cache_dump(STATE_SYNC(external), fd, NFCT_O_XML);
- break;
- case COMMIT:
- dlog(STATE(log), "[REQ] commit external cache to master table");
- cache_commit(STATE_SYNC(external));
- break;
- case FLUSH_CACHE:
- dlog(STATE(log), "[REQ] flushing caches");
- cache_flush(STATE_SYNC(internal));
- cache_flush(STATE_SYNC(external));
- break;
- case KILL:
- killer();
- break;
- case STATS:
- cache_stats(STATE_SYNC(internal), fd);
- cache_stats(STATE_SYNC(external), fd);
- dump_traffic_stats(fd);
- mcast_dump_stats(fd, STATE_SYNC(mcast_client),
- STATE_SYNC(mcast_server));
- dump_stats_sync(fd);
- break;
- case SEND_BULK:
- dlog(STATE(log), "[REQ] sending bulk update");
- cache_bulk(STATE_SYNC(internal));
- break;
- default:
- if (STATE_SYNC(mcast_sync)->local)
- ret = STATE_SYNC(mcast_sync)->local(fd, type, data);
- break;
- }
-
- return ret;
-}
-
-static void dump_sync(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- /* This is required by kernels < 2.6.20 */
- nfct_attr_unset(ct, ATTR_TIMEOUT);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_USE);
-
- if (cache_update_force(STATE_SYNC(internal), ct))
- debug_ct(ct, "resync");
-}
-
-static void mcast_send_sync(struct nlmsghdr *nlh,
- struct us_conntrack *u,
- struct nf_conntrack *ct,
- int type)
-{
- char buf[4096];
- struct nlnetwork *net = (struct nlnetwork *) buf;
- int mangled = 0;
-
- memset(buf, 0, sizeof(buf));
-
- if (!state_helper_verdict(type, ct))
- return;
-
- if (!mangled)
- memcpy(buf + sizeof(struct nlnetwork), nlh, nlh->nlmsg_len);
-
- mcast_send_netmsg(STATE_SYNC(mcast_client), net);
- STATE_SYNC(mcast_sync)->post_send(net, u);
-}
-
-static void overrun_sync(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- struct us_conntrack *u;
-
- /* This is required by kernels < 2.6.20 */
- nfct_attr_unset(ct, ATTR_TIMEOUT);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_USE);
-
- if (!cache_test(STATE_SYNC(internal), ct)) {
- if ((u = cache_update_force(STATE_SYNC(internal), ct))) {
- debug_ct(ct, "overrun resync");
- mcast_send_sync(nlh, u, ct, NFCT_T_UPDATE);
- }
- }
-}
-
-static void event_new_sync(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- struct us_conntrack *u;
-
- /* required by linux kernel <= 2.6.20 */
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
- nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
- nfct_attr_unset(ct, ATTR_TIMEOUT);
-retry:
- if ((u = cache_add(STATE_SYNC(internal), ct))) {
- mcast_send_sync(nlh, u, ct, NFCT_T_NEW);
- debug_ct(u->ct, "internal new");
- } else {
- if (errno == EEXIST) {
- char buf[4096];
- struct nlmsghdr *nlh = (struct nlmsghdr *) buf;
-
- int ret = build_network_msg(NFCT_Q_DESTROY,
- STATE(subsys_event),
- ct,
- buf,
- sizeof(buf));
- if (ret == -1)
- return;
-
- cache_del(STATE_SYNC(internal), ct);
- mcast_send_sync(nlh, NULL, ct, NFCT_T_NEW);
- goto retry;
- }
- dlog(STATE(log), "can't add to internal cache: "
- "%s\n", strerror(errno));
- debug_ct(ct, "can't add");
- }
-}
-
-static void event_update_sync(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- struct us_conntrack *u;
-
- nfct_attr_unset(ct, ATTR_TIMEOUT);
-
- if ((u = cache_update(STATE_SYNC(internal), ct)) == NULL) {
- /*
- * Perhaps we are losing events. If we are working
- * in relax mode then add a new entry to the cache.
- *
- * FIXME: relax transitions not implemented yet
- */
- if ((CONFIG(flags) & RELAX_TRANSITIONS)
- && (u = cache_add(STATE_SYNC(internal), ct))) {
- debug_ct(u->ct, "forcing internal update");
- } else {
- debug_ct(ct, "can't update");
- return;
- }
- }
- debug_ct(u->ct, "internal update");
- mcast_send_sync(nlh, u, ct, NFCT_T_UPDATE);
-}
-
-static int event_destroy_sync(struct nf_conntrack *ct, struct nlmsghdr *nlh)
-{
- nfct_attr_unset(ct, ATTR_TIMEOUT);
-
- if (CONFIG(flags) & DELAY_DESTROY_MSG) {
-
- nfct_set_attr_u32(ct, ATTR_STATUS, IPS_DYING);
-
- if (cache_update(STATE_SYNC(internal), ct)) {
- debug_ct(ct, "delay internal destroy");
- return 1;
- } else {
- debug_ct(ct, "can't delay destroy!");
- return 0;
- }
- } else {
- if (cache_del(STATE_SYNC(internal), ct)) {
- mcast_send_sync(nlh, NULL, ct, NFCT_T_DESTROY);
- debug_ct(ct, "internal destroy");
- } else
- debug_ct(ct, "can't destroy");
- }
-}
-
-struct ct_mode sync_mode = {
- .init = init_sync,
- .add_fds_to_set = add_fds_to_set_sync,
- .step = step_sync,
- .local = local_handler_sync,
- .kill = kill_sync,
- .dump = dump_sync,
- .overrun = overrun_sync,
- .event_new = event_new_sync,
- .event_upd = event_update_sync,
- .event_dst = event_destroy_sync
-};
diff --git a/daemon/src/sync-nack.c b/daemon/src/sync-nack.c
deleted file mode 100644
index 288dba4..0000000
--- a/daemon/src/sync-nack.c
+++ /dev/null
@@ -1,309 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <errno.h>
-#include "conntrackd.h"
-#include "sync.h"
-#include "linux_list.h"
-#include "us-conntrack.h"
-#include "buffer.h"
-#include "debug.h"
-#include "network.h"
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-
-#if 0
-#define dp printf
-#else
-#define dp
-#endif
-
-static LIST_HEAD(queue);
-
-struct cache_nack {
- struct list_head head;
- u_int32_t seq;
-};
-
-static void cache_nack_add(struct us_conntrack *u, void *data)
-{
- struct cache_nack *cn = data;
-
- INIT_LIST_HEAD(&cn->head);
- list_add(&cn->head, &queue);
-}
-
-static void cache_nack_update(struct us_conntrack *u, void *data)
-{
- struct cache_nack *cn = data;
-
- if (cn->head.next != LIST_POISON1 &&
- cn->head.prev != LIST_POISON2)
- list_del(&cn->head);
-
- INIT_LIST_HEAD(&cn->head);
- list_add(&cn->head, &queue);
-}
-
-static void cache_nack_destroy(struct us_conntrack *u, void *data)
-{
- struct cache_nack *cn = data;
-
- if (cn->head.next != LIST_POISON1 &&
- cn->head.prev != LIST_POISON2)
- list_del(&cn->head);
-}
-
-static struct cache_extra cache_nack_extra = {
- .size = sizeof(struct cache_nack),
- .add = cache_nack_add,
- .update = cache_nack_update,
- .destroy = cache_nack_destroy
-};
-
-static int nack_init()
-{
- STATE_SYNC(buffer) = buffer_create(CONFIG(resend_buffer_size));
- if (STATE_SYNC(buffer) == NULL)
- return -1;
-
- return 0;
-}
-
-static void nack_kill()
-{
- buffer_destroy(STATE_SYNC(buffer));
-}
-
-static void mcast_send_nack(u_int32_t expt_seq, u_int32_t recv_seq)
-{
- struct nlnetwork_ack nack = {
- .flags = NET_NACK,
- .from = expt_seq,
- .to = recv_seq,
- };
-
- mcast_send_error(STATE_SYNC(mcast_client), &nack);
- buffer_add(STATE_SYNC(buffer), &nack, sizeof(struct nlnetwork_ack));
-}
-
-static void mcast_send_ack(u_int32_t from, u_int32_t to)
-{
- struct nlnetwork_ack ack = {
- .flags = NET_ACK,
- .from = from,
- .to = to,
- };
-
- mcast_send_error(STATE_SYNC(mcast_client), &ack);
- buffer_add(STATE_SYNC(buffer), &ack, sizeof(struct nlnetwork_ack));
-}
-
-static void mcast_send_resync()
-{
- struct nlnetwork net = {
- .flags = NET_RESYNC,
- };
-
- mcast_send_error(STATE_SYNC(mcast_client), &net);
- buffer_add(STATE_SYNC(buffer), &net, sizeof(struct nlnetwork));
-}
-
-int nack_local(int fd, int type, void *data)
-{
- int ret = 1;
-
- switch(type) {
- case REQUEST_DUMP:
- mcast_send_resync();
- dlog(STATE(log), "[REQ] request resync");
- break;
- default:
- ret = 0;
- break;
- }
-
- return ret;
-}
-
-static int buffer_compare(void *data1, void *data2)
-{
- struct nlnetwork *net = data1;
- struct nlnetwork_ack *nack = data2;
- struct nlmsghdr *nlh = data1 + sizeof(struct nlnetwork);
-
- unsigned old_seq = ntohl(net->seq);
-
- if (ntohl(net->seq) >= nack->from && ntohl(net->seq) <= nack->to) {
- if (mcast_resend_netmsg(STATE_SYNC(mcast_client), net))
- dp("resend destroy (old seq=%u) (seq=%u)\n",
- old_seq, ntohl(net->seq));
- }
- return 0;
-}
-
-static int buffer_remove(void *data1, void *data2)
-{
- struct nlnetwork *net = data1;
- struct nlnetwork_ack *h = data2;
-
- if (ntohl(net->seq) >= h->from && ntohl(net->seq) <= h->to) {
- dp("remove from buffer (seq=%u)\n", ntohl(net->seq));
- __buffer_del(STATE_SYNC(buffer), data1);
- }
- return 0;
-}
-
-static void queue_resend(struct cache *c, unsigned int from, unsigned int to)
-{
- struct list_head *n;
- struct us_conntrack *u;
- unsigned int *seq;
-
- lock();
- list_for_each(n, &queue) {
- struct cache_nack *cn = (struct cache_nack *) n;
- struct us_conntrack *u;
-
- u = cache_get_conntrack(STATE_SYNC(internal), cn);
-
- if (cn->seq >= from && cn->seq <= to) {
- debug_ct(u->ct, "resend nack");
- dp("resending nack'ed (oldseq=%u) ", cn->seq);
-
- char buf[4096];
- struct nlnetwork *net = (struct nlnetwork *) buf;
-
- int ret = build_network_msg(NFCT_Q_UPDATE,
- STATE(subsys_event),
- u->ct,
- buf,
- sizeof(buf));
- if (ret == -1) {
- unlock();
- break;
- }
-
- mcast_send_netmsg(STATE_SYNC(mcast_client), buf);
- STATE_SYNC(mcast_sync)->post_send(net, u);
- dp("(newseq=%u)\n", *seq);
- }
- }
- unlock();
-}
-
-static void queue_empty(struct cache *c, unsigned int from, unsigned int to)
-{
- struct list_head *n, *tmp;
- struct us_conntrack *u;
- unsigned int *seq;
-
- lock();
- dp("ACK from %u to %u\n", from, to);
- list_for_each_safe(n, tmp, &queue) {
- struct cache_nack *cn = (struct cache_nack *) n;
-
- u = cache_get_conntrack(STATE_SYNC(internal), cn);
- if (cn->seq >= from && cn->seq <= to) {
- dp("remove %u\n", cn->seq);
- debug_ct(u->ct, "ack received: empty queue");
- dp("queue: deleting from queue (seq=%u)\n", cn->seq);
- list_del(&cn->head);
- }
- }
- unlock();
-}
-
-static int nack_pre_recv(const struct nlnetwork *net)
-{
- static unsigned int window = 0;
- unsigned int exp_seq;
-
- if (window == 0)
- window = CONFIG(window_size);
-
- if (!mcast_track_seq(net->seq, &exp_seq)) {
- dp("OOS: sending nack (seq=%u)\n", exp_seq);
- mcast_send_nack(exp_seq, net->seq - 1);
- window = CONFIG(window_size);
- } else {
- /* received a window, send an acknowledgement */
- if (--window == 0) {
- dp("sending ack (seq=%u)\n", net->seq);
- mcast_send_ack(net->seq-CONFIG(window_size), net->seq);
- }
- }
-
- if (net->flags & NET_NACK) {
- struct nlnetwork_ack *nack = (struct nlnetwork_ack *) net;
-
- dp("NACK: from seq=%u to seq=%u\n", nack->from, nack->to);
- queue_resend(STATE_SYNC(internal), nack->from, nack->to);
- buffer_iterate(STATE_SYNC(buffer), nack, buffer_compare);
- return 1;
- } else if (net->flags & NET_RESYNC) {
- dp("RESYNC ALL\n");
- cache_bulk(STATE_SYNC(internal));
- return 1;
- } else if (net->flags & NET_ACK) {
- struct nlnetwork_ack *h = (struct nlnetwork_ack *) net;
-
- dp("ACK: from seq=%u to seq=%u\n", h->from, h->to);
- queue_empty(STATE_SYNC(internal), h->from, h->to);
- buffer_iterate(STATE_SYNC(buffer), h, buffer_remove);
- return 1;
- }
-
- return 0;
-}
-
-static void nack_post_send(const struct nlnetwork *net, struct us_conntrack *u)
-{
- unsigned int size = sizeof(struct nlnetwork);
- struct nlmsghdr *nlh = (struct nlmsghdr *) ((void *) net + size);
-
- if (NFNL_MSG_TYPE(ntohs(nlh->nlmsg_type)) == IPCTNL_MSG_CT_DELETE) {
- buffer_add(STATE_SYNC(buffer), net,
- ntohl(nlh->nlmsg_len) + size);
- } else if (u != NULL) {
- unsigned int *seq;
- struct list_head *n;
- struct cache_nack *cn;
-
- cn = (struct cache_nack *)
- cache_get_extra(STATE_SYNC(internal), u);
- cn->seq = ntohl(net->seq);
- if (cn->head.next != LIST_POISON1 &&
- cn->head.prev != LIST_POISON2)
- list_del(&cn->head);
-
- INIT_LIST_HEAD(&cn->head);
- list_add(&cn->head, &queue);
- }
-}
-
-struct sync_mode nack = {
- .internal_cache_flags = LIFETIME,
- .external_cache_flags = LIFETIME,
- .internal_cache_extra = &cache_nack_extra,
- .init = nack_init,
- .kill = nack_kill,
- .local = nack_local,
- .pre_recv = nack_pre_recv,
- .post_send = nack_post_send,
-};
diff --git a/daemon/src/sync-notrack.c b/daemon/src/sync-notrack.c
deleted file mode 100644
index 2b5ae38..0000000
--- a/daemon/src/sync-notrack.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "conntrackd.h"
-#include "sync.h"
-#include "network.h"
-#include "us-conntrack.h"
-#include "alarm.h"
-
-static void refresher(struct alarm_list *a, void *data)
-{
- struct us_conntrack *u = data;
- char buf[8192];
- int size;
-
- if (nfct_get_attr_u32(u->ct, ATTR_STATUS) & IPS_DYING) {
-
- debug_ct(u->ct, "persistence destroy");
-
- size = build_network_msg(NFCT_Q_DESTROY,
- STATE(subsys_event),
- u->ct,
- buf,
- sizeof(buf));
-
- __cache_del(u->cache, u->ct);
- mcast_send_netmsg(STATE_SYNC(mcast_client), buf);
- } else {
-
- debug_ct(u->ct, "persistence update");
-
- a->expires = random() % CONFIG(refresh) + 1;
- size = build_network_msg(NFCT_Q_UPDATE,
- STATE(subsys_event),
- u->ct,
- buf,
- sizeof(buf));
- mcast_send_netmsg(STATE_SYNC(mcast_client), buf);
- }
-}
-
-static void cache_notrack_add(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
-
- init_alarm(alarm);
- set_alarm_expiration(alarm, (random() % conf.refresh) + 1);
- set_alarm_data(alarm, u);
- set_alarm_function(alarm, refresher);
- add_alarm(alarm);
-}
-
-static void cache_notrack_update(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
- mod_alarm(alarm, (random() % conf.refresh) + 1);
-}
-
-static void cache_notrack_destroy(struct us_conntrack *u, void *data)
-{
- struct alarm_list *alarm = data;
- del_alarm(alarm);
-}
-
-static struct cache_extra cache_notrack_extra = {
- .size = sizeof(struct alarm_list),
- .add = cache_notrack_add,
- .update = cache_notrack_update,
- .destroy = cache_notrack_destroy
-};
-
-static int notrack_pre_recv(const struct nlnetwork *net)
-{
- unsigned int exp_seq;
-
- /*
- * Ignore error messages: Although this message type is not ever
- * generated in notrack mode, we don't want to crash the daemon
- * if someone nuts mixes nack and notrack.
- */
- if (net->flags & (NET_RESYNC | NET_NACK))
- return 1;
-
- /*
- * Multicast sequence tracking: we keep track of multicast messages
- * although we don't do any explicit message recovery. So, why do
- * we do sequence tracking? Just to let know the sysadmin.
- *
- * Let t be 1 < t < RefreshTime. To ensure consistency, conntrackd
- * retransmit every t seconds a message with the state of a certain
- * entry even if such entry did not change. This mechanism also
- * provides passive resynchronization, in other words, there is
- * no facility to request a full synchronization from new nodes that
- * just joined the cluster, instead they just get resynchronized in
- * RefreshTime seconds at worst case.
- */
- mcast_track_seq(net->seq, &exp_seq);
-
- return 0;
-}
-
-static void notrack_post_send(const struct nlnetwork *n, struct us_conntrack *u)
-{
-}
-
-struct sync_mode notrack = {
- .internal_cache_flags = LIFETIME,
- .external_cache_flags = TIMER | LIFETIME,
- .internal_cache_extra = &cache_notrack_extra,
- .pre_recv = notrack_pre_recv,
- .post_send = notrack_post_send,
-};
diff --git a/daemon/src/traffic_stats.c b/daemon/src/traffic_stats.c
deleted file mode 100644
index b510b77..0000000
--- a/daemon/src/traffic_stats.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "cache.h"
-#include "hash.h"
-#include "conntrackd.h"
-#include <libnfnetlink/libnfnetlink.h>
-#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
-#include <errno.h>
-#include "us-conntrack.h"
-#include <signal.h>
-
-void update_traffic_stats(struct nf_conntrack *ct)
-{
- STATE(bytes)[NFCT_DIR_ORIGINAL] +=
- nfct_get_attr_u32(ct, ATTR_ORIG_COUNTER_BYTES);
- STATE(bytes)[NFCT_DIR_REPLY] +=
- nfct_get_attr_u32(ct, ATTR_REPL_COUNTER_BYTES);
- STATE(packets)[NFCT_DIR_ORIGINAL] +=
- nfct_get_attr_u32(ct, ATTR_ORIG_COUNTER_PACKETS);
- STATE(packets)[NFCT_DIR_REPLY] +=
- nfct_get_attr_u32(ct, ATTR_REPL_COUNTER_PACKETS);
-}
-
-void dump_traffic_stats(int fd)
-{
- char buf[512];
- int size;
- u_int64_t bytes = STATE(bytes)[NFCT_DIR_ORIGINAL] +
- STATE(bytes)[NFCT_DIR_REPLY];
- u_int64_t packets = STATE(packets)[NFCT_DIR_ORIGINAL] +
- STATE(packets)[NFCT_DIR_REPLY];
-
- size = sprintf(buf, "traffic processed:\n");
- size += sprintf(buf+size, "%20llu Bytes ", bytes);
- size += sprintf(buf+size, "%20llu Pckts\n\n", packets);
-
- send(fd, buf, size, 0);
-}