*
* Connection Manager
*
- * Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <stdio.h>
#include <string.h>
#include <unistd.h>
-#include <sys/errno.h>
+#include <errno.h>
#include <sys/socket.h>
#include <xtables.h>
+#include <inttypes.h>
+#include <setjmp.h>
#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
#include "connman.h"
-
-void flush_table(const char *name);
+#include "src/shared/util.h"
/*
* Some comments on how the iptables API works (some of them from the
* - ipt_entry->target_offset = Size of ipt_entry + matches
* - ipt_entry->next_offset = Size of ipt_entry + matches + target
* - IPT_SO_SET_REPLACE is used to write a table (contains the complete
- * - hook_entry and overflow mark the begining and the end of a chain, e.g
+ * - hook_entry and overflow mark the beginning and the end of a chain, e.g
* entry hook: pre/in/fwd/out/post -1/0/352/504/-1
* underflow: pre/in/fwd/out/post -1/200/352/904/-1
* means that INPUT starts at offset 0 and ends at 200 (the start offset to
* End of CHAIN
*/
+/*
+ * Values for the index values used here are defined as equal for both IPv4
+ * and IPv6 (NF_IP_* and NF_IP6_*) in Netfilter headers.
+ */
static const char *hooknames[] = {
[NF_IP_PRE_ROUTING] = "PREROUTING",
[NF_IP_LOCAL_IN] = "INPUT",
#define XT_OPTION_OFFSET_SCALE 256
-#define MIN_ALIGN (__alignof__(struct ipt_entry))
-
-#define ALIGN(s) (((s) + ((MIN_ALIGN)-1)) & ~((MIN_ALIGN)-1))
-
-struct error_target {
- struct xt_entry_target t;
- char error[IPT_TABLE_MAXNAMELEN];
-};
-
struct connman_iptables_entry {
- int offset;
+ int type;
+ unsigned int offset;
int builtin;
+ int counter_idx;
struct ipt_entry *entry;
+ struct ip6t_entry *entry6;
};
struct connman_iptables {
+ int type;
char *name;
int ipt_sock;
struct ipt_getinfo *info;
struct ipt_get_entries *blob_entries;
+ struct ip6t_getinfo *info6;
+ struct ip6t_get_entries *blob_entries6;
unsigned int num_entries;
unsigned int old_entries;
};
static GHashTable *table_hash = NULL;
-static gboolean debug_enabled = FALSE;
+static GHashTable *table_hash_ipv6 = NULL;
+static bool debug_enabled = false;
+
+struct iptables_ip {
+ int type;
+ struct ipt_ip *ip;
+ struct ip6t_ip6 *ip6;
+};
+
+struct iptables_replace {
+ int type;
+ struct ipt_replace *r;
+ struct ip6t_replace *r6;
+};
+
+static jmp_buf env_state;
+static bool jmp_set = false;
+
+static void enable_jmp()
+{
+ jmp_set = true;
+}
+
+static void disable_jmp()
+{
+ jmp_set = false;
+}
+
+static bool can_jmp()
+{
+ DBG("%s", jmp_set ? "true" : "false");
+ return jmp_set;
+}
+
+typedef int (*iterate_entries_cb_t)(struct connman_iptables_entry *entry,
+ int builtin, unsigned int hook,
+ size_t size, unsigned int offset,
+ void *user_data);
+
+static u_int16_t iptables_entry_get_next_offset(
+ struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return 0;
+
+ switch (entry->type) {
+ case AF_INET:
+ return entry->entry ? entry->entry->next_offset : 0;
+ case AF_INET6:
+ return entry->entry6 ? entry->entry6->next_offset : 0;
+ }
+
+ return 0;
+}
+
+static u_int16_t iptables_entry_get_target_offset(
+ struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return 0;
+
+ switch (entry->type) {
+ case AF_INET:
+ return entry->entry ? entry->entry->target_offset : 0;
+ case AF_INET6:
+ return entry->entry6 ? entry->entry6->target_offset : 0;
+ }
+
+ return 0;
+}
+
+static unsigned char *iptables_entry_get_elems(
+ struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return NULL;
+
+ switch (entry->type) {
+ case AF_INET:
+ return entry->entry ? entry->entry->elems : NULL;
+ case AF_INET6:
+ return entry->entry6 ? entry->entry6->elems : NULL;
+ }
+
+ return NULL;
+}
+
+static struct xt_entry_target *iptables_entry_get_target(
+ struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return NULL;
+
+ switch (entry->type) {
+ case AF_INET:
+ return entry->entry ? ipt_get_target(entry->entry) : NULL;
+ case AF_INET6:
+ return entry->entry6 ? ip6t_get_target(entry->entry6) : NULL;
+ }
+
+ return NULL;
+}
+
+static struct xt_counters *iptables_entry_get_counters(
+ struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return NULL;
+
+ switch (entry->type) {
+ case AF_INET:
+ return entry->entry ? &entry->entry->counters : NULL;
+ case AF_INET6:
+ return entry->entry6 ? &entry->entry6->counters : NULL;
+ }
+
+ return NULL;
+}
+
+static void iptables_entry_free(struct connman_iptables_entry *entry)
+{
+ if (!entry)
+ return;
+
+ g_free(entry->entry);
+ g_free(entry->entry6);
+ g_free(entry);
+}
+
+static const char *iptables_table_get_info_name(struct connman_iptables* table)
+{
+ if (!table)
+ return NULL;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->name;
+ case AF_INET6:
+ return table->info6->name;
+ }
+
+ return NULL;
+}
+
+static unsigned int iptables_table_get_info_num_entries(
+ struct connman_iptables* table)
+{
+ if (!table)
+ return 0;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->num_entries;
+ case AF_INET6:
+ return table->info6->num_entries;
+ }
+
+ return 0;
+}
+
+static unsigned int iptables_table_get_info_size(struct connman_iptables* table)
+{
+ if (!table)
+ return 0;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->size;
+ case AF_INET6:
+ return table->info6->size;
+ }
+
+ return 0;
+}
+
+static unsigned int iptables_table_get_info_valid_hooks(
+ struct connman_iptables* table)
+{
+ if (!table)
+ return 0;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->valid_hooks;
+ case AF_INET6:
+ return table->info6->valid_hooks;
+ }
+
+ return 0;
+}
+
+static unsigned int *iptables_table_get_info_hook_entry(
+ struct connman_iptables* table)
+{
+ if (!table)
+ return NULL;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->hook_entry;
+ case AF_INET6:
+ return table->info6->hook_entry;
+ }
+
+ return NULL;
+}
+
+static unsigned int *iptables_table_get_info_underflow(
+ struct connman_iptables* table)
+{
+ if (!table)
+ return NULL;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->info->underflow;
+ case AF_INET6:
+ return table->info6->underflow;
+ }
+
+ return NULL;
+}
+
+static unsigned int iptables_table_get_entries_size(
+ struct connman_iptables* table)
+{
+ if (!table)
+ return 0;
+
+ switch (table->type) {
+ case AF_INET:
+ return table->blob_entries->size;
+ case AF_INET6:
+ return table->blob_entries6->size;
+ }
+
+ return 0;
+}
-typedef int (*iterate_entries_cb_t)(struct ipt_entry *entry, int builtin,
- unsigned int hook,size_t size,
- unsigned int offset, void *user_data);
+static const char *get_error_target(int type)
+{
+ switch (type) {
+ case AF_INET:
+ return IPT_ERROR_TARGET;
+ case AF_INET6:
+ return IP6T_ERROR_TARGET;
+ default:
+ return XT_ERROR_TARGET;
+ }
+}
+
+static const char *get_standard_target(int type)
+{
+ switch (type) {
+ case AF_INET:
+ return IPT_STANDARD_TARGET;
+ case AF_INET6:
+ return IP6T_STANDARD_TARGET;
+ default:
+ return XT_STANDARD_TARGET;
+ }
+}
+
+static struct connman_iptables *hash_table_lookup(int type,
+ const char *table_name) {
+
+ switch (type) {
+ case AF_INET:
+ return g_hash_table_lookup(table_hash, table_name);
+ case AF_INET6:
+ return g_hash_table_lookup(table_hash_ipv6, table_name);
+ }
+
+ return NULL;
+}
+
+static bool hash_table_replace(int type,
+ char *table_name,
+ struct connman_iptables *table) {
+
+ switch (type) {
+ case AF_INET:
+ return g_hash_table_replace(table_hash, table_name, table);
+ case AF_INET6:
+ return g_hash_table_replace(table_hash_ipv6, table_name, table);
+ }
+
+ return false;
+}
+
+static bool hash_table_remove(int type, const char *table_name)
+{
+ switch (type) {
+ case AF_INET:
+ return g_hash_table_remove(table_hash, table_name);
+ case AF_INET6:
+ return g_hash_table_remove(table_hash_ipv6, table_name);
+ }
+
+ return false;
+}
static unsigned int next_hook_entry_index(unsigned int *valid_hooks)
{
return h;
}
-static int iterate_entries(struct ipt_entry *entries,
+static int iterate_entries(struct connman_iptables_entry *entries,
unsigned int valid_hooks,
unsigned int *hook_entry,
unsigned int *underflow,
{
unsigned int offset, h, hook;
int builtin, err;
- struct ipt_entry *entry;
+ struct connman_iptables_entry entry;
+
+ if (!entries)
+ return -EINVAL;
+
+ switch (entries->type) {
+ case AF_INET:
+ if (!entries->entry)
+ return -EINVAL;
+
+ break;
+ case AF_INET6:
+ if (!entries->entry6)
+ return -EINVAL;
+
+ break;
+ default:
+ return -EINVAL;
+ }
h = next_hook_entry_index(&valid_hooks);
hook = h;
- for (offset = 0, entry = entries; offset < size;
- offset += entry->next_offset) {
+ entry.type = entries->type;
+ entry.entry = entries->entry;
+ entry.entry6 = entries->entry6;
+
+ for (offset = 0; offset < size;
+ offset += iptables_entry_get_next_offset(&entry)) {
builtin = -1;
- entry = (void *)entries + offset;
+
+ switch (entries->type) {
+ case AF_INET:
+ entry.entry = (void* )entries->entry + offset;
+ break;
+ case AF_INET6:
+ entry.entry6 = (void* )entries->entry6 + offset;
+ break;
+ }
/*
* Updating builtin, hook and h is very tricky.
if (h == NF_INET_NUMHOOKS)
hook = h;
- if (h < NF_INET_NUMHOOKS && underflow[h] <= offset) {
+ if (h < NF_INET_NUMHOOKS && underflow[h] <= offset)
h = next_hook_entry_index(&valid_hooks);
- }
- err = cb(entry, builtin, hook, size, offset, user_data);
+ err = cb(&entry, builtin, hook, size, offset, user_data);
if (err < 0)
return err;
}
return 0;
}
-static int print_entry(struct ipt_entry *entry, int builtin, unsigned int hook,
- size_t size, unsigned int offset,
- void *user_data)
+static int print_entry(struct connman_iptables_entry *entry, int builtin,
+ unsigned int hook, size_t size,
+ unsigned int offset, void *user_data)
{
- iterate_entries_cb_t cb = user_data;
+ iterate_entries_cb_t cb;
+ struct xt_counters *counters;
+
+ cb = user_data;
+ counters = iptables_entry_get_counters(entry);
- DBG("entry %p hook %d offset %d size %d", entry, hook,
- offset, entry->next_offset);
+ DBG("entry %p hook %u offset %u size %u packets %"PRIu64" "
+ "bytes %"PRIu64, entry, hook, offset,
+ iptables_entry_get_next_offset(entry),
+ (uint64_t) counters->pcnt, (uint64_t) counters->bcnt);
return cb(entry, builtin, hook, size, offset, NULL);
}
return 0;
}
-static gboolean is_builtin_target(const char *target_name)
+static bool is_builtin_target(const char *target_name)
{
if (!g_strcmp0(target_name, LABEL_ACCEPT) ||
!g_strcmp0(target_name, LABEL_DROP) ||
!g_strcmp0(target_name, LABEL_QUEUE) ||
!g_strcmp0(target_name, LABEL_RETURN))
- return TRUE;
+ return true;
- return FALSE;
+ return false;
}
-static gboolean is_jump(struct connman_iptables_entry *e)
+static bool is_jump(struct connman_iptables_entry *e)
{
struct xt_entry_target *target;
- target = ipt_get_target(e->entry);
+ target = iptables_entry_get_target(e);
+
+ if (!target)
+ return false;
- if (!g_strcmp0(target->u.user.name, IPT_STANDARD_TARGET)) {
+ if (!g_strcmp0(target->u.user.name, get_standard_target(e->type))) {
struct xt_standard_target *t;
t = (struct xt_standard_target *)target;
return false;
}
-static gboolean is_fallthrough(struct connman_iptables_entry *e)
+static bool is_fallthrough(struct connman_iptables_entry *e)
{
struct xt_entry_target *target;
- target = ipt_get_target(e->entry);
- if (!g_strcmp0(target->u.user.name, IPT_STANDARD_TARGET)) {
+ target = iptables_entry_get_target(e);
+
+ if (!target)
+ return false;
+
+ if (!g_strcmp0(target->u.user.name, get_standard_target(e->type))) {
struct xt_standard_target *t;
t = (struct xt_standard_target *)target;
return false;
}
-static gboolean is_chain(struct connman_iptables *table,
+static bool is_chain(struct connman_iptables *table,
struct connman_iptables_entry *e)
{
- struct ipt_entry *entry;
struct xt_entry_target *target;
- entry = e->entry;
+ if (!e)
+ return false;
+
if (e->builtin >= 0)
- return TRUE;
+ return true;
- target = ipt_get_target(entry);
- if (!g_strcmp0(target->u.user.name, IPT_ERROR_TARGET))
- return TRUE;
+ target = iptables_entry_get_target(e);
- return FALSE;
+ if (!target)
+ return false;
+
+ if (!g_strcmp0(target->u.user.name, get_error_target(e->type)))
+ return true;
+
+ return false;
}
static GList *find_chain_head(struct connman_iptables *table,
{
GList *list;
struct connman_iptables_entry *head;
- struct ipt_entry *entry;
struct xt_entry_target *target;
int builtin;
+ switch (table->type) {
+ case AF_INET:
+ case AF_INET6:
+ break;
+ default:
+ return NULL;
+ }
+
for (list = table->entries; list; list = list->next) {
head = list->data;
- entry = head->entry;
/* Buit-in chain */
builtin = head->builtin;
+
if (builtin >= 0 && !g_strcmp0(hooknames[builtin], chain_name))
break;
/* User defined chain */
- target = ipt_get_target(entry);
- if (!g_strcmp0(target->u.user.name, IPT_ERROR_TARGET) &&
- !g_strcmp0((char *)target->data, chain_name))
+ target = iptables_entry_get_target(head);
+
+ if (!target)
+ continue;
+
+ if (!g_strcmp0(target->u.user.name,
+ get_error_target(table->type)) &&
+ !g_strcmp0((char *)target->data, chain_name))
break;
}
GList *chain_head, *list;
chain_head = find_chain_head(table, chain_name);
- if (chain_head == NULL)
+ if (!chain_head)
return NULL;
/* Then we look for the next chain */
return g_list_last(table->entries);
}
-
static void update_offsets(struct connman_iptables *table)
{
GList *list, *prev;
prev_entry = prev->data;
entry->offset = prev_entry->offset +
- prev_entry->entry->next_offset;
+ iptables_entry_get_next_offset(
+ prev_entry);
}
}
static void update_targets_reference(struct connman_iptables *table,
struct connman_iptables_entry *entry_before,
struct connman_iptables_entry *modified_entry,
- gboolean is_removing)
+ bool is_removing)
{
struct connman_iptables_entry *tmp;
struct xt_standard_target *t;
GList *list;
- int offset;
+ unsigned int offset;
- offset = modified_entry->entry->next_offset;
+ offset = iptables_entry_get_next_offset(modified_entry);
for (list = table->entries; list; list = list->next) {
tmp = list->data;
if (!is_jump(tmp))
continue;
- t = (struct xt_standard_target *)ipt_get_target(tmp->entry);
+ t = (struct xt_standard_target *)
+ iptables_entry_get_target(tmp);
+
+ if (!t)
+ continue;
- if (is_removing == TRUE) {
+ if (is_removing) {
if (t->verdict >= entry_before->offset)
t->verdict -= offset;
} else {
}
if (is_fallthrough(modified_entry)) {
- t = (struct xt_standard_target *) ipt_get_target(modified_entry->entry);
+ t = (struct xt_standard_target *)
+ iptables_entry_get_target(modified_entry);
+
+ if (!t)
+ return;
t->verdict = entry_before->offset +
- modified_entry->entry->target_offset +
- ALIGN(sizeof(struct xt_standard_target));
+ iptables_entry_get_target_offset(modified_entry) +
+ XT_ALIGN(sizeof(struct xt_standard_target));
t->target.u.target_size =
- ALIGN(sizeof(struct xt_standard_target));
+ XT_ALIGN(sizeof(struct xt_standard_target));
}
}
static int iptables_add_entry(struct connman_iptables *table,
- struct ipt_entry *entry, GList *before,
- int builtin)
+ struct connman_iptables_entry *entry,
+ GList *before, int builtin, int counter_idx)
{
struct connman_iptables_entry *e, *entry_before;
- if (table == NULL)
- return -1;
+ if (!table) {
+ return -EINVAL;
+ }
e = g_try_malloc0(sizeof(struct connman_iptables_entry));
- if (e == NULL)
- return -1;
+ if (!e)
+ return -ENOMEM;
+
+ switch (table->type) {
+ case AF_INET:
+ e->entry = entry->entry;
+ break;
+ case AF_INET6:
+ e->entry6 = entry->entry6;
+ break;
+ default:
+ g_free(e);
+ return -EINVAL;
+ }
- e->entry = entry;
+ e->type = entry->type;
e->builtin = builtin;
+ e->counter_idx = counter_idx;
table->entries = g_list_insert_before(table->entries, before, e);
table->num_entries++;
- table->size += entry->next_offset;
-
- if (before == NULL) {
- e->offset = table->size - entry->next_offset;
+ table->size += iptables_entry_get_next_offset(e);
+ if (!before) {
+ e->offset = table->size -
+ iptables_entry_get_next_offset(e);
return 0;
}
entry_before = before->data;
/*
- * We've just appended/insterted a new entry. All references
+ * We've just appended/inserted a new entry. All references
* should be bumped accordingly.
*/
- update_targets_reference(table, entry_before, e, FALSE);
+ update_targets_reference(table, entry_before, e, false);
update_offsets(table);
struct connman_iptables_entry *entry)
{
int removed = 0;
+ u_int16_t next_offset;
+ next_offset = iptables_entry_get_next_offset(entry);
table->num_entries--;
- table->size -= entry->entry->next_offset;
- removed = entry->entry->next_offset;
+
+ table->size -= next_offset;
+ removed = next_offset;
table->entries = g_list_remove(table->entries, entry);
- g_free(entry->entry);
- g_free(entry);
+ iptables_entry_free(entry);
return removed;
}
+static void delete_update_hooks(struct connman_iptables *table,
+ int builtin, GList *chain_head,
+ int removed)
+{
+ struct connman_iptables_entry *e;
+ GList *list;
+
+ e = chain_head->data;
+ e->builtin = builtin;
+
+ table->underflow[builtin] -= removed;
+
+ for (list = chain_head->next; list; list = list->next) {
+ e = list->data;
+
+ if (e->builtin < 0)
+ continue;
+
+ table->hook_entry[e->builtin] -= removed;
+ table->underflow[e->builtin] -= removed;
+ }
+}
+
static int iptables_flush_chain(struct connman_iptables *table,
const char *name)
{
DBG("table %s chain %s", table->name, name);
chain_head = find_chain_head(table, name);
- if (chain_head == NULL)
+ if (!chain_head)
return -EINVAL;
chain_tail = find_chain_tail(table, name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return -EINVAL;
entry = chain_head->data;
list = next;
}
- if (builtin >= 0) {
- struct connman_iptables_entry *e;
-
- entry = list->data;
-
- entry->builtin = builtin;
-
- table->underflow[builtin] -= removed;
-
- for (list = chain_tail; list; list = list->next) {
- e = list->data;
-
- builtin = e->builtin;
- if (builtin < 0)
- continue;
-
- table->hook_entry[builtin] -= removed;
- table->underflow[builtin] -= removed;
- }
- }
+ if (builtin >= 0)
+ delete_update_hooks(table, builtin, chain_tail->prev, removed);
update_offsets(table);
const char *name)
{
GList *last;
- struct ipt_entry *entry_head;
- struct ipt_entry *entry_return;
- struct error_target *error;
- struct ipt_standard_target *standard;
+ struct ipt_entry *entry_head = NULL;
+ struct ipt_entry *entry_return = NULL;
+ struct ip6t_entry *entry6_head = NULL;
+ struct ip6t_entry *entry6_return = NULL;
+ struct connman_iptables_entry entry = { 0 };
+ struct xt_error_target *error = NULL;
+ struct ipt_standard_target *standard = NULL;
u_int16_t entry_head_size, entry_return_size;
+ size_t entry_struct_size = 0;
+ size_t xt_error_target_size = 0;
+ size_t standard_target_size = 0;
DBG("table %s chain %s", table->name, name);
+ entry.type = table->type;
+
+ /* Do not allow to add duplicate chains */
+ if (find_chain_head(table, name))
+ return -EEXIST;
+
last = g_list_last(table->entries);
+ xt_error_target_size = XT_ALIGN(sizeof(struct xt_error_target));
+
/*
* An empty chain is composed of:
* - A head entry, with no match and an error target.
*/
/* head entry */
- entry_head_size = sizeof(struct ipt_entry) +
- sizeof(struct error_target);
- entry_head = g_try_malloc0(entry_head_size);
- if (entry_head == NULL)
- goto err_head;
+ switch (entry.type) {
+ case AF_INET:
+ entry_struct_size = XT_ALIGN(sizeof(struct ipt_entry));
+ entry_head_size = entry_struct_size + xt_error_target_size;
- memset(entry_head, 0, entry_head_size);
+ entry_head = g_try_malloc0(entry_head_size);
+ if (!entry_head)
+ goto err_head;
- entry_head->target_offset = sizeof(struct ipt_entry);
- entry_head->next_offset = entry_head_size;
+ entry_head->target_offset = entry_struct_size;
+ entry_head->next_offset = entry_head_size;
- error = (struct error_target *) entry_head->elems;
- g_stpcpy(error->t.u.user.name, IPT_ERROR_TARGET);
- error->t.u.user.target_size = ALIGN(sizeof(struct error_target));
- g_stpcpy(error->error, name);
+ error = (struct xt_error_target *) entry_head->elems;
- if (iptables_add_entry(table, entry_head, last, -1) < 0)
- goto err_head;
+ entry.entry = entry_head;
+ break;
+ case AF_INET6:
+ entry_struct_size = XT_ALIGN(sizeof(struct ip6t_entry));
+ entry_head_size = entry_struct_size + xt_error_target_size;
- /* tail entry */
- entry_return_size = sizeof(struct ipt_entry) +
- sizeof(struct ipt_standard_target);
- entry_return = g_try_malloc0(entry_return_size);
- if (entry_return == NULL)
- goto err;
+ entry6_head = g_try_malloc0(entry_head_size);
+ if (!entry6_head)
+ goto err_head;
- memset(entry_return, 0, entry_return_size);
+ entry6_head->target_offset = entry_struct_size;
+ entry6_head->next_offset = entry_head_size;
- entry_return->target_offset = sizeof(struct ipt_entry);
- entry_return->next_offset = entry_return_size;
+ error = (struct xt_error_target *) entry6_head->elems;
- standard = (struct ipt_standard_target *) entry_return->elems;
- standard->target.u.user.target_size =
- ALIGN(sizeof(struct ipt_standard_target));
- standard->verdict = XT_RETURN;
+ entry.entry6 = entry6_head;
+ break;
+ default:
+ return -EINVAL;
+ }
- if (iptables_add_entry(table, entry_return, last, -1) < 0)
- goto err;
+ g_stpcpy(error->target.u.user.name, get_error_target(entry.type));
+ error->target.u.user.target_size = xt_error_target_size;
+ g_stpcpy(error->errorname, name);
- return 0;
+ if (iptables_add_entry(table, &entry, last, -1, -1) < 0)
+ goto err_head;
+
+ standard_target_size = XT_ALIGN(sizeof(struct ipt_standard_target));
+ entry_return_size = entry_struct_size + standard_target_size;
+
+ /* tail entry */
+ switch (entry.type) {
+ case AF_INET:
+ entry_return = g_try_malloc0(entry_return_size);
+ if (!entry_return)
+ goto err;
+
+ entry_return->target_offset = entry_struct_size;
+ entry_return->next_offset = entry_return_size;
+
+ standard = (struct ipt_standard_target *) entry_return->elems;
+
+ entry.entry = entry_return;
+ break;
+ case AF_INET6:
+ entry6_return = g_try_malloc0(entry_return_size);
+ if (!entry6_return)
+ goto err;
+
+ entry6_return->target_offset = entry_struct_size;
+ entry6_return->next_offset = entry_return_size;
+
+ standard = (struct ipt_standard_target *) entry6_return->elems;
+
+ entry.entry6 = entry6_return;
+ break;
+ }
+
+ standard->target.u.user.target_size = standard_target_size;
+ standard->verdict = XT_RETURN;
+
+ if (iptables_add_entry(table, &entry, last, -1, -1) < 0)
+ goto err;
+
+ return 0;
err:
g_free(entry_return);
+ g_free(entry6_return);
err_head:
g_free(entry_head);
+ g_free(entry6_head);
return -ENOMEM;
}
DBG("table %s chain %s", table->name, name);
chain_head = find_chain_head(table, name);
- if (chain_head == NULL)
+ if (!chain_head)
return -EINVAL;
entry = chain_head->data;
return -EINVAL;
chain_tail = find_chain_tail(table, name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return -EINVAL;
/* Chain must be flushed */
return 0;
}
-static struct ipt_entry *new_rule(struct ipt_ip *ip,
+static struct connman_iptables_entry *new_rule(struct iptables_ip *ip,
const char *target_name, struct xtables_target *xt_t,
struct xtables_rule_match *xt_rm)
{
struct xtables_rule_match *tmp_xt_rm;
- struct ipt_entry *new_entry;
+ struct connman_iptables_entry *new_entry;
size_t match_size, target_size;
+ new_entry = g_try_malloc0(sizeof(struct connman_iptables_entry));
+
+ if (!new_entry)
+ return NULL;
+
+ new_entry->type = ip->type;
+
match_size = 0;
- for (tmp_xt_rm = xt_rm; tmp_xt_rm != NULL; tmp_xt_rm = tmp_xt_rm->next)
+ for (tmp_xt_rm = xt_rm; tmp_xt_rm; tmp_xt_rm = tmp_xt_rm->next)
match_size += tmp_xt_rm->match->m->u.match_size;
if (xt_t)
- target_size = ALIGN(xt_t->t->u.target_size);
+ target_size = xt_t->t->u.target_size;
else
- target_size = ALIGN(sizeof(struct xt_standard_target));
-
- new_entry = g_try_malloc0(sizeof(struct ipt_entry) + target_size +
- match_size);
- if (new_entry == NULL)
- return NULL;
-
- memcpy(&new_entry->ip, ip, sizeof(struct ipt_ip));
-
- new_entry->target_offset = sizeof(struct ipt_entry) + match_size;
- new_entry->next_offset = sizeof(struct ipt_entry) + target_size +
- match_size;
+ target_size = XT_ALIGN(sizeof(struct xt_standard_target));
+
+ switch (ip->type) {
+ case AF_INET:
+ new_entry->entry = g_try_malloc0(
+ XT_ALIGN(sizeof(struct ipt_entry)) +
+ target_size + match_size);
+ if (!new_entry->entry)
+ goto err;
+
+ memcpy(&new_entry->entry->ip, ip->ip, sizeof(struct ipt_ip));
+
+ new_entry->entry->target_offset =
+ XT_ALIGN(sizeof(struct ipt_entry)) +
+ match_size;
+ new_entry->entry->next_offset =
+ XT_ALIGN(sizeof(struct ipt_entry)) +
+ target_size + match_size;
+ break;
+ case AF_INET6:
+ new_entry->entry6 = g_try_malloc0(
+ XT_ALIGN(sizeof(struct ip6t_entry)) +
+ target_size + match_size);
+ if (!new_entry->entry6)
+ goto err;
+
+ memcpy(&new_entry->entry6->ipv6, ip->ip6,
+ sizeof(struct ip6t_ip6));
+
+ new_entry->entry6->target_offset =
+ XT_ALIGN(sizeof(struct ip6t_entry)) +
+ match_size;
+ new_entry->entry6->next_offset =
+ XT_ALIGN(sizeof(struct ip6t_entry)) +
+ target_size + match_size;
+ break;
+ default:
+ goto err;
+ }
match_size = 0;
- for (tmp_xt_rm = xt_rm; tmp_xt_rm != NULL;
+ for (tmp_xt_rm = xt_rm; tmp_xt_rm;
tmp_xt_rm = tmp_xt_rm->next) {
- memcpy(new_entry->elems + match_size, tmp_xt_rm->match->m,
+
+ switch (new_entry->type) {
+ case AF_INET:
+ memcpy(new_entry->entry->elems + match_size,
+ tmp_xt_rm->match->m,
+ tmp_xt_rm->match->m->u.match_size);
+ break;
+ case AF_INET6:
+ memcpy(new_entry->entry6->elems + match_size,
+ tmp_xt_rm->match->m,
tmp_xt_rm->match->m->u.match_size);
+ break;
+ }
match_size += tmp_xt_rm->match->m->u.match_size;
}
if (xt_t) {
struct xt_entry_target *entry_target;
- entry_target = ipt_get_target(new_entry);
+ entry_target = iptables_entry_get_target(new_entry);
memcpy(entry_target, xt_t->t, target_size);
}
return new_entry;
+
+err:
+ g_free(new_entry);
+
+ return NULL;
}
static void update_hooks(struct connman_iptables *table, GList *chain_head,
- struct ipt_entry *entry)
+ struct connman_iptables_entry *entry)
{
GList *list;
struct connman_iptables_entry *head, *e;
int builtin;
+ u_int16_t next_offset;
- if (chain_head == NULL)
+ if (!table || !chain_head)
return;
head = chain_head->data;
if (builtin < 0)
return;
- table->underflow[builtin] += entry->next_offset;
+ next_offset = iptables_entry_get_next_offset(entry);
+
+ table->underflow[builtin] += next_offset;
for (list = chain_head->next; list; list = list->next) {
e = list->data;
if (builtin < 0)
continue;
- table->hook_entry[builtin] += entry->next_offset;
- table->underflow[builtin] += entry->next_offset;
+ table->hook_entry[builtin] += next_offset;
+ table->underflow[builtin] += next_offset;
}
}
-static struct ipt_entry *prepare_rule_inclusion(struct connman_iptables *table,
- struct ipt_ip *ip, const char *chain_name,
+static struct connman_iptables_entry *prepare_rule_inclusion(
+ struct connman_iptables *table,
+ struct iptables_ip *ip,
+ const char *chain_name,
const char *target_name,
struct xtables_target *xt_t,
- int *builtin, struct xtables_rule_match *xt_rm)
+ int *builtin,
+ struct xtables_rule_match *xt_rm,
+ bool insert)
{
GList *chain_tail, *chain_head;
- struct ipt_entry *new_entry;
struct connman_iptables_entry *head;
+ struct connman_iptables_entry *new_entry;
chain_head = find_chain_head(table, chain_name);
- if (chain_head == NULL)
+ if (!chain_head)
return NULL;
chain_tail = find_chain_tail(table, chain_name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return NULL;
new_entry = new_rule(ip, target_name, xt_t, xt_rm);
- if (new_entry == NULL)
- return NULL;
+
+ switch (new_entry->type) {
+ case AF_INET:
+ if (new_entry->entry)
+ break;
+ case AF_INET6:
+ if (new_entry->entry6)
+ break;
+ default:
+ goto err;
+ }
update_hooks(table, chain_head, new_entry);
head = chain_head->data;
if (head->builtin < 0)
*builtin = -1;
- else if (chain_head == chain_tail->prev) {
+ else if (insert || chain_head == chain_tail->prev) {
*builtin = head->builtin;
head->builtin = -1;
}
return new_entry;
+
+err:
+ g_free(new_entry);
+
+ return NULL;
}
static int iptables_append_rule(struct connman_iptables *table,
- struct ipt_ip *ip, const char *chain_name,
+ struct iptables_ip *ip,
+ const char *chain_name,
const char *target_name,
struct xtables_target *xt_t,
struct xtables_rule_match *xt_rm)
{
- struct ipt_entry *new_entry;
+ struct connman_iptables_entry *new_entry;
int builtin = -1, ret;
GList *chain_tail;
DBG("table %s chain %s", table->name, chain_name);
chain_tail = find_chain_tail(table, chain_name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return -EINVAL;
- new_entry = prepare_rule_inclusion(table, ip, chain_name,
- target_name, xt_t, &builtin, xt_rm);
- if (new_entry == NULL)
+ new_entry = prepare_rule_inclusion(table, ip, chain_name, target_name,
+ xt_t, &builtin, xt_rm, false);
+
+ if (!new_entry)
return -EINVAL;
- ret = iptables_add_entry(table, new_entry, chain_tail->prev, builtin);
+ switch (new_entry->type) {
+ case AF_INET:
+ if (new_entry->entry)
+ break;
+ case AF_INET6:
+ if (new_entry->entry6)
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = iptables_add_entry(table, new_entry, chain_tail->prev,
+ builtin, -1);
if (ret < 0)
- g_free(new_entry);
+ goto err;
+
+ /*
+ * Free only the container, not the content iptables_add_entry()
+ * allocates new containers for entries.
+ */
+ g_free(new_entry);
+
+ return ret;
+
+err:
+ iptables_entry_free(new_entry);
return ret;
}
-static gboolean is_same_ipt_entry(struct ipt_entry *i_e1,
+static int iptables_insert_rule(struct connman_iptables *table,
+ struct iptables_ip *ip,
+ const char *chain_name,
+ const char *target_name,
+ struct xtables_target *xt_t,
+ struct xtables_rule_match *xt_rm)
+{
+ struct connman_iptables_entry *new_entry;
+ int builtin = -1, ret;
+ GList *chain_head;
+
+ DBG("table %s chain %s", table->name, chain_name);
+
+ chain_head = find_chain_head(table, chain_name);
+ if (!chain_head)
+ return -EINVAL;
+
+ new_entry = prepare_rule_inclusion(table, ip, chain_name, target_name,
+ xt_t, &builtin, xt_rm, true);
+
+ if (!new_entry)
+ return -EINVAL;
+
+ switch (new_entry->type) {
+ case AF_INET:
+ if (new_entry->entry)
+ break;
+ case AF_INET6:
+ if (new_entry->entry6)
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (builtin == -1)
+ chain_head = chain_head->next;
+
+ ret = iptables_add_entry(table, new_entry, chain_head, builtin, -1);
+ if (ret < 0)
+ goto err;
+
+ /*
+ * Free only the container, not the content iptables_add_entry()
+ * allocates new containers for entries.
+ */
+ g_free(new_entry);
+
+ return ret;
+
+err:
+ iptables_entry_free(new_entry);
+
+ return ret;
+}
+
+static bool is_same_ipt_entry(struct ipt_entry *i_e1,
struct ipt_entry *i_e2)
{
if (memcmp(&i_e1->ip, &i_e2->ip, sizeof(struct ipt_ip)) != 0)
- return FALSE;
+ return false;
if (i_e1->target_offset != i_e2->target_offset)
- return FALSE;
+ return false;
if (i_e1->next_offset != i_e2->next_offset)
- return FALSE;
+ return false;
- return TRUE;
+ return true;
}
-static gboolean is_same_target(struct xt_entry_target *xt_e_t1,
+/* A copy of is_same_ipt_entry with IPv6 structures */
+static bool is_same_ip6t_entry(struct ip6t_entry *i_e1,
+ struct ip6t_entry *i_e2)
+{
+ if (memcmp(&i_e1->ipv6, &i_e2->ipv6, sizeof(struct ip6t_ip6)) != 0)
+ return false;
+
+ if (i_e1->target_offset != i_e2->target_offset)
+ return false;
+
+ if (i_e1->next_offset != i_e2->next_offset)
+ return false;
+
+ return true;
+}
+
+static bool is_same_iptables_entry(struct connman_iptables_entry *e1,
+ struct connman_iptables_entry *e2)
+{
+ if (e1->type != e2->type)
+ return false;
+
+ switch (e1->type) {
+ case AF_INET:
+ return is_same_ipt_entry(e1->entry, e2->entry);
+ case AF_INET6:
+ return is_same_ip6t_entry(e1->entry6, e2->entry6);
+ }
+
+ return false;
+}
+
+static bool is_same_target(struct xt_entry_target *xt_e_t1,
struct xt_entry_target *xt_e_t2)
{
unsigned int i;
- if (xt_e_t1 == NULL || xt_e_t2 == NULL)
- return FALSE;
+ if (!xt_e_t1 || !xt_e_t2)
+ return false;
if (g_strcmp0(xt_e_t1->u.user.name, "") == 0 &&
g_strcmp0(xt_e_t2->u.user.name, "") == 0) {
/* fallthrough */
- return TRUE;
- } else if (g_strcmp0(xt_e_t1->u.user.name, IPT_STANDARD_TARGET) == 0) {
+ return true;
+
+ /*
+ * IPT_STANDARD_TARGET and IP6T_STANDARD_TARGET are defined by
+ * XT_STANDARD_TARGET
+ */
+ } else if (g_strcmp0(xt_e_t1->u.user.name, XT_STANDARD_TARGET) == 0) {
struct xt_standard_target *xt_s_t1;
struct xt_standard_target *xt_s_t2;
xt_s_t2 = (struct xt_standard_target *) xt_e_t2;
if (xt_s_t1->verdict != xt_s_t2->verdict)
- return FALSE;
+ return false;
} else {
if (xt_e_t1->u.target_size != xt_e_t2->u.target_size)
- return FALSE;
+ return false;
if (g_strcmp0(xt_e_t1->u.user.name, xt_e_t2->u.user.name) != 0)
- return FALSE;
+ return false;
for (i = 0; i < xt_e_t1->u.target_size -
sizeof(struct xt_standard_target); i++) {
if ((xt_e_t1->data[i] ^ xt_e_t2->data[i]) != 0)
- return FALSE;
+ return false;
}
}
- return TRUE;
+ return true;
}
-static gboolean is_same_match(struct xt_entry_match *xt_e_m1,
+static bool is_same_match(struct xt_entry_match *xt_e_m1,
struct xt_entry_match *xt_e_m2)
{
unsigned int i;
- if (xt_e_m1 == NULL || xt_e_m2 == NULL)
- return FALSE;
+ if (!xt_e_m1 || !xt_e_m2)
+ return false;
if (xt_e_m1->u.match_size != xt_e_m2->u.match_size)
- return FALSE;
+ return false;
if (xt_e_m1->u.user.revision != xt_e_m2->u.user.revision)
- return FALSE;
+ return false;
if (g_strcmp0(xt_e_m1->u.user.name, xt_e_m2->u.user.name) != 0)
- return FALSE;
+ return false;
for (i = 0; i < xt_e_m1->u.match_size - sizeof(struct xt_entry_match);
i++) {
if ((xt_e_m1->data[i] ^ xt_e_m2->data[i]) != 0)
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
static GList *find_existing_rule(struct connman_iptables *table,
- struct ipt_ip *ip, const char *chain_name,
+ struct iptables_ip *ip,
+ const char *chain_name,
const char *target_name,
struct xtables_target *xt_t,
- struct xtables_match *xt_m,
+ GList *matches,
struct xtables_rule_match *xt_rm)
{
GList *chain_tail, *chain_head, *list;
struct xt_entry_target *xt_e_t = NULL;
struct xt_entry_match *xt_e_m = NULL;
struct connman_iptables_entry *entry;
- struct ipt_entry *entry_test;
+ struct connman_iptables_entry *entry_test;
int builtin;
chain_head = find_chain_head(table, chain_name);
- if (chain_head == NULL)
+ if (!chain_head)
return NULL;
chain_tail = find_chain_tail(table, chain_name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return NULL;
- if (!xt_t && !xt_m)
+ if (!xt_t && !matches)
return NULL;
entry_test = new_rule(ip, target_name, xt_t, xt_rm);
- if (entry_test == NULL)
+
+ switch (entry_test->type) {
+ case AF_INET:
+ if (!entry_test->entry) {
+#if defined TIZEN_EXT
+ iptables_entry_free(entry_test);
+#endif
+ return NULL;
+ }
+ break;
+ case AF_INET6:
+ if (!entry_test->entry6) {
+#if defined TIZEN_EXT
+ iptables_entry_free(entry_test);
+#endif
+ return NULL;
+ }
+ break;
+ default:
+#if defined TIZEN_EXT
+ iptables_entry_free(entry_test);
+#endif
return NULL;
+ }
- if (xt_t != NULL)
- xt_e_t = ipt_get_target(entry_test);
- if (xt_m != NULL)
- xt_e_m = (struct xt_entry_match *)entry_test->elems;
+ if (xt_t)
+ xt_e_t = iptables_entry_get_target(entry_test);
+ if (matches)
+ xt_e_m = (struct xt_entry_match *)
+ iptables_entry_get_elems(entry_test);
entry = chain_head->data;
builtin = entry->builtin;
for (; list != chain_tail->prev; list = list->next) {
struct connman_iptables_entry *tmp;
- struct ipt_entry *tmp_e;
tmp = list->data;
- tmp_e = tmp->entry;
- if (is_same_ipt_entry(entry_test, tmp_e) == FALSE)
+ if (!is_same_iptables_entry(entry_test, tmp))
continue;
- if (xt_t != NULL) {
- struct xt_entry_target *tmp_xt_e_t;
+ if (xt_t) {
+ struct xt_entry_target *tmp_xt_e_t = NULL;
- tmp_xt_e_t = ipt_get_target(tmp_e);
+ tmp_xt_e_t = iptables_entry_get_target(tmp);
if (!is_same_target(tmp_xt_e_t, xt_e_t))
continue;
}
- if (xt_m != NULL) {
+ if (matches) {
struct xt_entry_match *tmp_xt_e_m;
- tmp_xt_e_m = (struct xt_entry_match *)tmp_e->elems;
+ tmp_xt_e_m = (struct xt_entry_match *)
+ iptables_entry_get_elems(tmp);
if (!is_same_match(tmp_xt_e_m, xt_e_m))
continue;
break;
}
- g_free(entry_test);
+ iptables_entry_free(entry_test);
if (list != chain_tail->prev)
return list;
}
static int iptables_delete_rule(struct connman_iptables *table,
- struct ipt_ip *ip, const char *chain_name,
+ struct iptables_ip *ip,
+ const char *chain_name,
const char *target_name,
struct xtables_target *xt_t,
- struct xtables_match *xt_m,
+ GList *matches,
struct xtables_rule_match *xt_rm)
{
struct connman_iptables_entry *entry;
removed = 0;
chain_head = find_chain_head(table, chain_name);
- if (chain_head == NULL)
+ if (!chain_head)
return -EINVAL;
chain_tail = find_chain_tail(table, chain_name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return -EINVAL;
list = find_existing_rule(table, ip, chain_name, target_name,
- xt_t, xt_m, xt_rm);
- if (list == NULL)
+ xt_t, matches, xt_rm);
+
+ if (!list)
return -EINVAL;
entry = chain_head->data;
}
entry = list->data;
- if (entry == NULL)
+ if (!entry)
return -EINVAL;
/* We have deleted a rule,
* all references should be bumped accordingly */
- if (list->next != NULL)
+ if (list->next)
update_targets_reference(table, list->next->data,
- list->data, TRUE);
+ list->data, true);
removed += remove_table_entry(table, entry);
- if (builtin >= 0) {
- table->underflow[builtin] -= removed;
- for (list = chain_tail; list; list = list->next) {
- entry = list->data;
-
- builtin = entry->builtin;
- if (builtin < 0)
- continue;
-
- table->hook_entry[builtin] -= removed;
- table->underflow[builtin] -= removed;
- }
- }
+ if (builtin >= 0)
+ delete_update_hooks(table, builtin, chain_head, removed);
update_offsets(table);
}
chain_head = find_chain_head(table, chain_name);
- if (chain_head == NULL)
+ if (!chain_head)
return -EINVAL;
entry = chain_head->data;
return -EINVAL;
chain_tail = find_chain_tail(table, chain_name);
- if (chain_tail == NULL)
+ if (!chain_tail)
return -EINVAL;
entry = chain_tail->prev->data;
- target = ipt_get_target(entry->entry);
+
+ target = iptables_entry_get_target(entry);
+
+ if (!target)
+ return -EINVAL;
t = (struct xt_standard_target *)target;
+ if (t->verdict != verdict)
+ entry->counter_idx = -1;
t->verdict = verdict;
return 0;
unsigned char *entry_index;
r = g_try_malloc0(sizeof(struct ipt_replace) + table->size);
- if (r == NULL)
+ if (!r)
return NULL;
memset(r, 0, sizeof(*r) + table->size);
r->counters = g_try_malloc0(sizeof(struct xt_counters)
* table->old_entries);
- if (r->counters == NULL) {
+ if (!r->counters) {
g_free(r);
return NULL;
}
return r;
}
-static void dump_ip(struct ipt_entry *entry)
+/* A copy of iptables_blob() with IPv6 structures */
+static struct ip6t_replace *ip6tables_blob(struct connman_iptables *table)
+{
+ struct ip6t_replace *r;
+ GList *list;
+ struct connman_iptables_entry *e;
+ unsigned char *entry_index;
+
+ r = g_try_malloc0(sizeof(struct ip6t_replace) + table->size);
+ if (!r)
+ return NULL;
+
+ memset(r, 0, sizeof(*r) + table->size);
+
+ r->counters = g_try_malloc0(sizeof(struct xt_counters)
+ * table->old_entries);
+ if (!r->counters) {
+ g_free(r);
+ return NULL;
+ }
+
+ g_stpcpy(r->name, table->info6->name);
+ r->num_entries = table->num_entries;
+ r->size = table->size;
+
+ r->num_counters = table->old_entries;
+ r->valid_hooks = table->info6->valid_hooks;
+
+ memcpy(r->hook_entry, table->hook_entry, sizeof(table->hook_entry));
+ memcpy(r->underflow, table->underflow, sizeof(table->underflow));
+
+ entry_index = (unsigned char *)r->entries;
+ for (list = table->entries; list; list = list->next) {
+ e = list->data;
+
+ memcpy(entry_index, e->entry6, e->entry6->next_offset);
+ entry_index += e->entry6->next_offset;
+ }
+
+ return r;
+}
+
+static void dump_ip(struct connman_iptables_entry *entry)
{
- struct ipt_ip *ip = &entry->ip;
+ char *iniface, *outiface;
char ip_string[INET6_ADDRSTRLEN];
char ip_mask[INET6_ADDRSTRLEN];
- if (strlen(ip->iniface))
- DBG("\tin %s", ip->iniface);
+ switch (entry->type) {
+ case AF_INET:
+ iniface = entry->entry->ip.iniface;
+ outiface = entry->entry->ip.outiface;
+ break;
+ case AF_INET6:
+ iniface = entry->entry6->ipv6.iniface;
+ outiface = entry->entry6->ipv6.outiface;
+ break;
+ default:
+ return;
+ }
- if (strlen(ip->outiface))
- DBG("\tout %s", ip->outiface);
+ if (strlen(iniface))
+ DBG("\tin %s", iniface);
- if (inet_ntop(AF_INET, &ip->src, ip_string, INET6_ADDRSTRLEN) != NULL &&
- inet_ntop(AF_INET, &ip->smsk,
- ip_mask, INET6_ADDRSTRLEN) != NULL)
- DBG("\tsrc %s/%s", ip_string, ip_mask);
+ if (strlen(outiface))
+ DBG("\tout %s", outiface);
- if (inet_ntop(AF_INET, &ip->dst, ip_string, INET6_ADDRSTRLEN) != NULL &&
- inet_ntop(AF_INET, &ip->dmsk,
- ip_mask, INET6_ADDRSTRLEN) != NULL)
- DBG("\tdst %s/%s", ip_string, ip_mask);
-}
+ if (entry->type == AF_INET) {
+ if (inet_ntop(entry->type, &entry->entry->ip.src, ip_string,
+ INET6_ADDRSTRLEN) && inet_ntop(entry->type,
+ &entry->entry->ip.smsk, ip_mask,
+ INET6_ADDRSTRLEN))
+ DBG("\tsrc %s/%s", ip_string, ip_mask);
-static void dump_target(struct ipt_entry *entry)
+ if (inet_ntop(entry->type, &entry->entry->ip.dst, ip_string,
+ INET6_ADDRSTRLEN) && inet_ntop(entry->type,
+ &entry->entry->ip.dmsk, ip_mask,
+ INET6_ADDRSTRLEN))
+ DBG("\tdst %s/%s", ip_string, ip_mask);
+ }
+
+ if (entry->type == AF_INET6) {
+ if (inet_ntop(entry->type, &entry->entry6->ipv6.src, ip_string,
+ INET6_ADDRSTRLEN) && inet_ntop(entry->type,
+ &entry->entry6->ipv6.smsk, ip_mask,
+ INET6_ADDRSTRLEN))
+ DBG("\tsrc %s/%s", ip_string, ip_mask);
+
+ if (inet_ntop(entry->type, &entry->entry6->ipv6.dst, ip_string,
+ INET6_ADDRSTRLEN) && inet_ntop(entry->type,
+ &entry->entry6->ipv6.dmsk, ip_mask,
+ INET6_ADDRSTRLEN))
+ DBG("\tdst %s/%s", ip_string, ip_mask);
+ }
+}
+static void dump_target(struct connman_iptables_entry *entry)
{
struct xtables_target *xt_t;
struct xt_entry_target *target;
+ int err;
+
+ target = iptables_entry_get_target(entry);
- target = ipt_get_target(entry);
+ if (!target)
+ return;
- if (!g_strcmp0(target->u.user.name, IPT_STANDARD_TARGET)) {
+ if (!g_strcmp0(target->u.user.name, get_standard_target(entry->type))) {
struct xt_standard_target *t;
t = (struct xt_standard_target *)target;
break;
}
- xt_t = xtables_find_target(IPT_STANDARD_TARGET,
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return;
+ }
+
+ xt_t = xtables_find_target(get_standard_target(entry->type),
XTF_LOAD_MUST_SUCCEED);
- if(xt_t->print != NULL)
+ disable_jmp();
+
+ if (xt_t->print)
xt_t->print(NULL, target, 1);
} else {
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return;
+ }
+
xt_t = xtables_find_target(target->u.user.name, XTF_TRY_LOAD);
- if (xt_t == NULL) {
+
+ disable_jmp();
+
+ if (!xt_t) {
DBG("\ttarget %s", target->u.user.name);
return;
}
- if(xt_t->print != NULL) {
+ if (xt_t->print) {
DBG("\ttarget ");
xt_t->print(NULL, target, 1);
}
}
+
+ if (xt_t == xt_t->next)
+ free(xt_t);
}
-static void dump_match(struct ipt_entry *entry)
+static void dump_match(struct connman_iptables_entry *entry)
{
struct xtables_match *xt_m;
struct xt_entry_match *match;
+ u_int16_t target_offset;
+ int err;
+
+ target_offset = iptables_entry_get_target_offset(entry);
- if (entry->elems == (unsigned char *)entry + entry->target_offset)
+ switch (entry->type) {
+ case AF_INET:
+ if (entry->entry->elems == (unsigned char *)entry->entry +
+ target_offset)
+ return;
+ break;
+ case AF_INET6:
+ if (entry->entry6->elems == (unsigned char *)entry->entry6 +
+ target_offset)
+ return;
+ break;
+ default:
return;
+ }
- match = (struct xt_entry_match *) entry->elems;
+ match = (struct xt_entry_match *) iptables_entry_get_elems(entry);
if (!strlen(match->u.user.name))
return;
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return;
+ }
+
xt_m = xtables_find_match(match->u.user.name, XTF_TRY_LOAD, NULL);
- if (xt_m == NULL)
+
+ disable_jmp();
+
+ if (!xt_m)
goto out;
- if(xt_m->print != NULL) {
+ if (xt_m->print) {
DBG("\tmatch ");
xt_m->print(NULL, match, 1);
return;
}
+ if (xt_m == xt_m->next)
+ free(xt_m);
out:
DBG("\tmatch %s", match->u.user.name);
}
-static int dump_entry(struct ipt_entry *entry, int builtin,
+static int dump_entry(struct connman_iptables_entry *entry, int builtin,
unsigned int hook, size_t size, unsigned int offset,
void *user_data)
{
struct xt_entry_target *target;
+ char *char_entry;
- target = ipt_get_target(entry);
+ target = iptables_entry_get_target(entry);
- if (offset + entry->next_offset == size) {
+ if (!target)
+ return -EINVAL;
+
+ if (offset + iptables_entry_get_next_offset(entry) == size) {
DBG("\tEnd of CHAIN");
return 0;
}
+ switch (entry->type) {
+ case AF_INET:
+ char_entry = (char *)entry->entry;
+ break;
+ case AF_INET6:
+ char_entry = (char *)entry->entry6;
+ break;
+ default:
+ return 0;
+ }
+
if (!g_strcmp0(target->u.user.name, IPT_ERROR_TARGET)) {
DBG("\tUSER CHAIN (%s) match %p target %p",
- target->data, entry->elems,
- (char *)entry + entry->target_offset);
+ target->data, iptables_entry_get_elems(entry),
+ char_entry + iptables_entry_get_target_offset(entry));
return 0;
} else if (builtin >= 0) {
DBG("\tCHAIN (%s) match %p target %p",
- hooknames[builtin], entry->elems,
- (char *)entry + entry->target_offset);
+ hooknames[builtin], iptables_entry_get_elems(entry),
+ char_entry + iptables_entry_get_target_offset(entry));
} else {
DBG("\tRULE match %p target %p",
- entry->elems,
- (char *)entry + entry->target_offset);
+ iptables_entry_get_elems(entry),
+ char_entry + iptables_entry_get_target_offset(entry));
}
dump_match(entry);
static void dump_table(struct connman_iptables *table)
{
+ struct connman_iptables_entry entry = { 0 };
+ unsigned int *hook_entry;
+ unsigned int *underflow;
+ unsigned int valid_hooks;
+ unsigned int size;
+
+ hook_entry = iptables_table_get_info_hook_entry(table);
+ underflow = iptables_table_get_info_underflow(table);
+ valid_hooks = iptables_table_get_info_valid_hooks(table);
+ size = iptables_table_get_info_size(table);
+
DBG("%s valid_hooks=0x%08x, num_entries=%u, size=%u",
- table->info->name,
- table->info->valid_hooks, table->info->num_entries,
- table->info->size);
+ iptables_table_get_info_name(table),
+ valid_hooks,
+ iptables_table_get_info_num_entries(table),
+ size);
DBG("entry hook: pre/in/fwd/out/post %d/%d/%d/%d/%d",
- table->info->hook_entry[NF_IP_PRE_ROUTING],
- table->info->hook_entry[NF_IP_LOCAL_IN],
- table->info->hook_entry[NF_IP_FORWARD],
- table->info->hook_entry[NF_IP_LOCAL_OUT],
- table->info->hook_entry[NF_IP_POST_ROUTING]);
+ hook_entry[NF_IP_PRE_ROUTING],
+ hook_entry[NF_IP_LOCAL_IN],
+ hook_entry[NF_IP_FORWARD],
+ hook_entry[NF_IP_LOCAL_OUT],
+ hook_entry[NF_IP_POST_ROUTING]);
DBG("underflow: pre/in/fwd/out/post %d/%d/%d/%d/%d",
- table->info->underflow[NF_IP_PRE_ROUTING],
- table->info->underflow[NF_IP_LOCAL_IN],
- table->info->underflow[NF_IP_FORWARD],
- table->info->underflow[NF_IP_LOCAL_OUT],
- table->info->underflow[NF_IP_POST_ROUTING]);
+ underflow[NF_IP_PRE_ROUTING],
+ underflow[NF_IP_LOCAL_IN],
+ underflow[NF_IP_FORWARD],
+ underflow[NF_IP_LOCAL_OUT],
+ underflow[NF_IP_POST_ROUTING]);
+
+ entry.type = table->type;
+
+ switch (table->type) {
+ case AF_INET:
+ entry.entry = table->blob_entries->entrytable;
+ break;
+ case AF_INET6:
+ entry.entry6 = table->blob_entries6->entrytable;
+ }
+
+ iterate_entries(&entry,
+ valid_hooks,
+ hook_entry,
+ underflow,
+ size,
+ print_entry, dump_entry);
+}
+
+static const char *iptables_replace_get_name(struct iptables_replace *replace)
+{
+ if (!replace)
+ return NULL;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->name;
+ case AF_INET6:
+ return replace->r6->name;
+ }
- iterate_entries(table->blob_entries->entrytable,
- table->info->valid_hooks,
- table->info->hook_entry,
- table->info->underflow,
- table->blob_entries->size,
- print_entry, dump_entry);
+ return NULL;
+}
+
+static unsigned int iptables_replace_get_valid_hooks(
+ struct iptables_replace *replace)
+{
+ if (!replace)
+ return 0;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->valid_hooks;
+ case AF_INET6:
+ return replace->r6->valid_hooks;
+ }
+
+ return 0;
+}
+
+static unsigned int iptables_replace_get_num_entries(
+ struct iptables_replace *replace)
+{
+ if (!replace)
+ return 0;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->num_entries;
+ case AF_INET6:
+ return replace->r6->num_entries;
+ }
+
+ return 0;
+}
+
+static unsigned int *iptables_replace_get_hook_entry(
+ struct iptables_replace *replace)
+{
+ if (!replace)
+ return NULL;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->hook_entry;
+ case AF_INET6:
+ return replace->r6->hook_entry;
+ }
+
+ return NULL;
+}
+
+static unsigned int *iptables_replace_get_underflow(
+ struct iptables_replace *replace)
+{
+ if (!replace)
+ return NULL;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->underflow;
+ case AF_INET6:
+ return replace->r6->underflow;
+ }
+
+ return NULL;
}
-static void dump_ipt_replace(struct ipt_replace *repl)
+static unsigned int iptables_replace_get_size(struct iptables_replace *replace)
{
+ if (!replace)
+ return 0;
+
+ switch (replace->type) {
+ case AF_INET:
+ return replace->r->size;
+ case AF_INET6:
+ return replace->r6->size;
+ }
+
+ return 0;
+}
+
+static void dump_replace(struct iptables_replace *repl)
+{
+ struct connman_iptables_entry entry = { 0 };
+ unsigned int *hook_entry;
+ unsigned int *underflow;
+ unsigned int valid_hooks;
+ unsigned int size;
+
+ hook_entry = iptables_replace_get_hook_entry(repl);
+ underflow = iptables_replace_get_underflow(repl);
+ valid_hooks = iptables_replace_get_valid_hooks(repl);
+ size = iptables_replace_get_size(repl);
+
+ switch (repl->type) {
+ case AF_INET:
+ entry.entry = repl->r->entries;
+ break;
+ case AF_INET6:
+ entry.entry6 = repl->r6->entries;
+ break;
+ default:
+ return;
+ }
+
DBG("%s valid_hooks 0x%08x num_entries %u size %u",
- repl->name, repl->valid_hooks, repl->num_entries,
- repl->size);
+ iptables_replace_get_name(repl),
+ valid_hooks,
+ iptables_replace_get_num_entries(repl), size);
DBG("entry hook: pre/in/fwd/out/post %d/%d/%d/%d/%d",
- repl->hook_entry[NF_IP_PRE_ROUTING],
- repl->hook_entry[NF_IP_LOCAL_IN],
- repl->hook_entry[NF_IP_FORWARD],
- repl->hook_entry[NF_IP_LOCAL_OUT],
- repl->hook_entry[NF_IP_POST_ROUTING]);
+ hook_entry[NF_IP_PRE_ROUTING],
+ hook_entry[NF_IP_LOCAL_IN],
+ hook_entry[NF_IP_FORWARD],
+ hook_entry[NF_IP_LOCAL_OUT],
+ hook_entry[NF_IP_POST_ROUTING]);
DBG("underflow: pre/in/fwd/out/post %d/%d/%d/%d/%d",
- repl->underflow[NF_IP_PRE_ROUTING],
- repl->underflow[NF_IP_LOCAL_IN],
- repl->underflow[NF_IP_FORWARD],
- repl->underflow[NF_IP_LOCAL_OUT],
- repl->underflow[NF_IP_POST_ROUTING]);
-
- iterate_entries(repl->entries, repl->valid_hooks,
- repl->hook_entry, repl->underflow,
- repl->size, print_entry, dump_entry);
+ underflow[NF_IP_PRE_ROUTING],
+ underflow[NF_IP_LOCAL_IN],
+ underflow[NF_IP_FORWARD],
+ underflow[NF_IP_LOCAL_OUT],
+ underflow[NF_IP_POST_ROUTING]);
+
+ iterate_entries(&entry, valid_hooks, hook_entry, underflow,
+ size, print_entry, dump_entry);
}
static int iptables_get_entries(struct connman_iptables *table)
{
socklen_t entry_size;
+ int err;
- entry_size = sizeof(struct ipt_get_entries) + table->info->size;
+ switch (table->type) {
+ case AF_INET:
+ entry_size = sizeof(struct ipt_get_entries) + table->info->size;
- return getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_ENTRIES,
- table->blob_entries, &entry_size);
+ err = getsockopt(table->ipt_sock, IPPROTO_IP,
+ IPT_SO_GET_ENTRIES, table->blob_entries,
+ &entry_size);
+ break;
+ case AF_INET6:
+ entry_size = sizeof(struct ip6t_get_entries) +
+ table->info6->size;
+
+ err = getsockopt(table->ipt_sock, IPPROTO_IPV6,
+ IP6T_SO_GET_ENTRIES, table->blob_entries6,
+ &entry_size);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (err < 0)
+ return -errno;
+
+ return 0;
}
static int iptables_replace(struct connman_iptables *table,
- struct ipt_replace *r)
+ struct iptables_replace *r)
{
- return setsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_SET_REPLACE, r,
- sizeof(*r) + r->size);
+ int err;
+
+ switch (r->type) {
+ case AF_INET:
+ if (!r->r)
+ return -EINVAL;
+
+ err = setsockopt(table->ipt_sock, IPPROTO_IP,
+ IPT_SO_SET_REPLACE, r->r,
+ sizeof(*r->r) + r->r->size);
+ break;
+ case AF_INET6:
+ if (!r->r6)
+ return -EINVAL;
+
+ err = setsockopt(table->ipt_sock, IPPROTO_IPV6,
+ IP6T_SO_SET_REPLACE, r->r6,
+ sizeof(*r->r6) + r->r6->size);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (err < 0)
+ return -errno;
+
+ return 0;
}
-static int add_entry(struct ipt_entry *entry, int builtin, unsigned int hook,
- size_t size, unsigned offset, void *user_data)
+static int iptables_add_counters(struct connman_iptables *table,
+ struct xt_counters_info *c)
+{
+ int err;
+ int level;
+ int optname;
+
+ switch (table->type) {
+ case AF_INET:
+ level = IPPROTO_IP;
+ optname = IPT_SO_SET_ADD_COUNTERS;
+ break;
+ case AF_INET6:
+ level = IPPROTO_IPV6;
+ optname = IP6T_SO_SET_ADD_COUNTERS;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = setsockopt(table->ipt_sock, level, optname, c,
+ sizeof(*c) + sizeof(struct xt_counters) * c->num_counters);
+
+ if (err < 0)
+ return -errno;
+
+ return 0;
+}
+
+static int add_entry(struct connman_iptables_entry *entry, int builtin,
+ unsigned int hook, size_t size, unsigned offset,
+ void *user_data)
{
struct connman_iptables *table = user_data;
- struct ipt_entry *new_entry;
+ struct connman_iptables_entry new_entry = { 0 };
+ u_int16_t next_offset;
- new_entry = g_try_malloc0(entry->next_offset);
- if (new_entry == NULL)
- return -ENOMEM;
+ new_entry.type = entry->type;
+ next_offset = iptables_entry_get_next_offset(entry);
- memcpy(new_entry, entry, entry->next_offset);
+ switch (entry->type) {
+ case AF_INET:
+ new_entry.entry = g_try_malloc0(next_offset);
+ if (!new_entry.entry)
+ return -ENOMEM;
+
+ memcpy(new_entry.entry, entry->entry, next_offset);
+ break;
+ case AF_INET6:
+ new_entry.entry6 = g_try_malloc0(next_offset);
+ if (!new_entry.entry6)
+ return -ENOMEM;
- return iptables_add_entry(table, new_entry, NULL, builtin);
+ memcpy(new_entry.entry6, entry->entry6, next_offset);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return iptables_add_entry(table, &new_entry, NULL, builtin,
+ table->num_entries);
}
static void table_cleanup(struct connman_iptables *table)
GList *list;
struct connman_iptables_entry *entry;
- if (table == NULL)
+ if (!table)
return;
if (table->ipt_sock >= 0)
for (list = table->entries; list; list = list->next) {
entry = list->data;
- g_free(entry->entry);
- g_free(entry);
+ iptables_entry_free(entry);
}
g_list_free(table->entries);
g_free(table->name);
- g_free(table->info);
- g_free(table->blob_entries);
+
+ if (table->type == AF_INET) {
+ g_free(table->info);
+ g_free(table->blob_entries);
+ }
+
+ if (table->type == AF_INET6) {
+ g_free(table->info6);
+ g_free(table->blob_entries6);
+ }
+
g_free(table);
}
-static struct connman_iptables *iptables_init(const char *table_name)
+static int setup_xtables(int type);
+static void reset_xtables();
+
+static struct connman_iptables *iptables_init(int type, const char *table_name)
{
struct connman_iptables *table = NULL;
+ struct connman_iptables_entry entry = { 0 };
+ char *iptables_mod = NULL;
char *module = NULL;
socklen_t s;
- DBG("%s", table_name);
+ switch(type) {
+ case AF_INET:
+ iptables_mod = g_strdup("ip_tables");
+ module = g_strconcat("iptable_", table_name, NULL);
+ break;
+ case AF_INET6:
+ iptables_mod = g_strdup("ip6_tables");
+ module = g_strconcat("ip6table_", table_name, NULL);
+ break;
+ default:
+ return NULL;
+ }
- if (xtables_insmod("ip_tables", NULL, TRUE) != 0)
- DBG("ip_tables module loading gives error but trying anyway");
+ DBG("%d %s", type, table_name);
- module = g_strconcat("iptable_", table_name, NULL);
- if (module == NULL)
+ if (setup_xtables(type)) {
+#if defined TIZEN_EXT
+ g_free(iptables_mod);
+ g_free(module);
+#endif
return NULL;
+ }
+
+ if (xtables_insmod(iptables_mod, NULL, TRUE) != 0)
+ DBG("%s module loading gives error but trying anyway",
+ iptables_mod);
+
+ g_free(iptables_mod);
if (xtables_insmod(module, NULL, TRUE) != 0)
DBG("%s module loading gives error but trying anyway", module);
g_free(module);
table = g_try_new0(struct connman_iptables, 1);
- if (table == NULL)
+ if (!table)
return NULL;
- table->info = g_try_new0(struct ipt_getinfo, 1);
- if (table->info == NULL)
- goto err;
+ table->type = entry.type = type;
- table->ipt_sock = socket(AF_INET, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_RAW);
+ table->ipt_sock = socket(type, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_RAW);
if (table->ipt_sock < 0)
goto err;
- s = sizeof(*table->info);
- g_stpcpy(table->info->name, table_name);
- if (getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_INFO,
- table->info, &s) < 0) {
- connman_error("iptables support missing error %d (%s)", errno,
- strerror(errno));
- goto err;
- }
+ switch (type) {
+ case AF_INET:
+ table->info = g_try_new0(struct ipt_getinfo, 1);
+ if (!table->info)
+ goto err;
- table->blob_entries = g_try_malloc0(sizeof(struct ipt_get_entries) +
- table->info->size);
- if (table->blob_entries == NULL)
- goto err;
+ s = sizeof(*table->info);
+ g_stpcpy(table->info->name, table_name);
+
+ if (getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_INFO,
+ table->info, &s) < 0) {
+ connman_error("iptables support missing error %d (%s)",
+ errno, strerror(errno));
+ goto err;
+ }
+
+ table->blob_entries = g_try_malloc0(
+ sizeof(struct ipt_get_entries) +
+ table->info->size);
+ if (!table->blob_entries)
+ goto err;
+
+ g_stpcpy(table->blob_entries->name, table_name);
+ table->blob_entries->size = table->info->size;
+
+ break;
+ case AF_INET6:
+ table->info6 = g_try_new0(struct ip6t_getinfo, 1);
+ if (!table->info6)
+ goto err;
+
+ s = sizeof(*table->info6);
+ g_stpcpy(table->info6->name, table_name);
+
+ if (getsockopt(table->ipt_sock, IPPROTO_IPV6, IP6T_SO_GET_INFO,
+ table->info6, &s) < 0) {
+ connman_error("ip6tables support missing error %d (%s)",
+ errno, strerror(errno));
+ goto err;
+ }
- g_stpcpy(table->blob_entries->name, table_name);
- table->blob_entries->size = table->info->size;
+ table->blob_entries6 = g_try_malloc0(
+ sizeof(struct ip6t_get_entries) +
+ table->info6->size);
+ if (!table->blob_entries6)
+ goto err;
+
+ g_stpcpy(table->blob_entries6->name, table_name);
+ table->blob_entries6->size = table->info6->size;
+
+ break;
+ }
if (iptables_get_entries(table) < 0)
goto err;
table->num_entries = 0;
- table->old_entries = table->info->num_entries;
table->size = 0;
- memcpy(table->underflow, table->info->underflow,
- sizeof(table->info->underflow));
- memcpy(table->hook_entry, table->info->hook_entry,
- sizeof(table->info->hook_entry));
+ switch (type) {
+ case AF_INET:
+ table->old_entries = table->info->num_entries;
+
+ memcpy(table->underflow, table->info->underflow,
+ sizeof(table->info->underflow));
+ memcpy(table->hook_entry, table->info->hook_entry,
+ sizeof(table->info->hook_entry));
+
+ entry.entry = table->blob_entries->entrytable;
+ break;
+ case AF_INET6:
+ table->old_entries = table->info6->num_entries;
+
+ memcpy(table->underflow, table->info6->underflow,
+ sizeof(table->info6->underflow));
+ memcpy(table->hook_entry, table->info6->hook_entry,
+ sizeof(table->info6->hook_entry));
+
+ entry.entry6 = table->blob_entries6->entrytable;
+ break;
+ }
- iterate_entries(table->blob_entries->entrytable,
- table->info->valid_hooks, table->info->hook_entry,
- table->info->underflow, table->blob_entries->size,
- add_entry, table);
+ iterate_entries(&entry,
+ iptables_table_get_info_valid_hooks(table),
+ iptables_table_get_info_hook_entry(table),
+ iptables_table_get_info_underflow(table),
+ iptables_table_get_entries_size(table),
+ add_entry,
+ table);
- if (debug_enabled == TRUE)
+ if (debug_enabled)
dump_table(table);
+ reset_xtables();
+
return table;
err:
table_cleanup(table);
+ reset_xtables();
return NULL;
}
{.name = "out-interface", .has_arg = 1, .val = 'o'},
{.name = "source", .has_arg = 1, .val = 's'},
{.name = "table", .has_arg = 1, .val = 't'},
+ {.name = "protocol", .has_arg = 1, .val = 'p'},
{NULL},
};
+void iptables_exit(enum xtables_exittype status, const char *msg, ...)
+ __attribute__((noreturn, format(printf,2,3)));
+
+void iptables_exit(enum xtables_exittype status, const char *msg, ...)
+{
+ va_list args;
+ gchar str[256] = { 0 };
+
+ switch (status) {
+ case OTHER_PROBLEM:
+ DBG("OTHER_PROBLEM");
+ break;
+ case PARAMETER_PROBLEM:
+ DBG("PARAMETER_PROBLEM");
+ break;
+ case VERSION_PROBLEM:
+ DBG("VERSION_PROBLEM");
+ break;
+ case RESOURCE_PROBLEM:
+ DBG("RESOURCE_PROBLEM");
+ break;
+ case XTF_ONLY_ONCE:
+ DBG("XTF_ONLY_ONCE");
+ break;
+ case XTF_NO_INVERT:
+ DBG("XTF_NO_INVERT");
+ break;
+ case XTF_BAD_VALUE:
+ DBG("XTF_BAD_VALUE");
+ break;
+ case XTF_ONE_ACTION:
+ DBG("XTF_ONE_ACTION");
+ break;
+ }
+
+ va_start(args, msg);
+ vsnprintf(str, 256, msg, args);
+ va_end(args);
+
+ connman_error("iptables rule error: %s", str);
+
+ if (can_jmp()) {
+ DBG("calling longjmp()");
+ /* enum xtables_exittype begins from 1 */
+ longjmp(env_state, status);
+ }
+
+ connman_error("exit because of iptables error");
+
+ exit(status);
+}
+
struct xtables_globals iptables_globals = {
.option_offset = 0,
.opts = iptables_opts,
.orig_opts = iptables_opts,
+ .exit_err = iptables_exit,
+#if XTABLES_VERSION_CODE > 10
+ .compat_rev = xtables_compatible_revision,
+#endif
+};
+
+struct xtables_globals ip6tables_globals = {
+ .option_offset = 0,
+ .opts = iptables_opts,
+ .orig_opts = iptables_opts,
+ .exit_err = iptables_exit,
+#if XTABLES_VERSION_CODE > 10
+ .compat_rev = xtables_compatible_revision,
+#endif
};
static struct xtables_target *prepare_target(struct connman_iptables *table,
const char *target_name)
{
struct xtables_target *xt_t = NULL;
- gboolean is_builtin, is_user_defined;
+ bool is_builtin, is_user_defined;
GList *chain_head = NULL;
size_t target_size;
+ int err;
+
+ is_builtin = false;
+ is_user_defined = false;
- is_builtin = FALSE;
- is_user_defined = FALSE;
+ DBG("target %s", target_name);
+
+ if (!table)
+ return NULL;
if (is_builtin_target(target_name))
- is_builtin = TRUE;
+ is_builtin = true;
else {
chain_head = find_chain_head(table, target_name);
- if (chain_head != NULL && chain_head->next != NULL)
- is_user_defined = TRUE;
+ if (chain_head && chain_head->next)
+ is_user_defined = true;
+ }
+
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return NULL;
}
if (is_builtin || is_user_defined)
- xt_t = xtables_find_target(IPT_STANDARD_TARGET,
+ xt_t = xtables_find_target(get_standard_target(table->type),
XTF_LOAD_MUST_SUCCEED);
else
xt_t = xtables_find_target(target_name, XTF_TRY_LOAD);
- if (xt_t == NULL)
+ disable_jmp();
+
+ if (!xt_t)
return NULL;
- target_size = ALIGN(sizeof(struct ipt_entry_target)) + xt_t->size;
+ switch (table->type) {
+ case AF_INET:
+ target_size = XT_ALIGN(sizeof(struct ipt_entry_target)) +
+ xt_t->size;
+ break;
+ case AF_INET6:
+ target_size = XT_ALIGN(sizeof(struct ip6t_entry_target)) +
+ xt_t->size;
+ break;
+ default:
+ return NULL;
+ }
xt_t->t = g_try_malloc0(target_size);
- if (xt_t->t == NULL)
+ if (!xt_t->t)
return NULL;
xt_t->t->u.target_size = target_size;
struct xt_standard_target *target;
target = (struct xt_standard_target *)(xt_t->t);
- g_stpcpy(target->target.u.user.name, IPT_STANDARD_TARGET);
+ g_stpcpy(target->target.u.user.name,
+ get_standard_target(table->type));
- if (is_builtin == TRUE)
+ if (is_builtin)
target->verdict = target_to_verdict(target_name);
- else if (is_user_defined == TRUE) {
+ else if (is_user_defined) {
struct connman_iptables_entry *target_rule;
- if (chain_head == NULL) {
- g_free(xt_t->t);
- return NULL;
- }
-
target_rule = chain_head->next->data;
target->verdict = target_rule->offset;
}
} else {
g_stpcpy(xt_t->t->u.user.name, target_name);
xt_t->t->u.user.revision = xt_t->revision;
- if (xt_t->init != NULL)
+ if (xt_t->init)
xt_t->init(xt_t->t);
}
- if (xt_t->x6_options != NULL)
- iptables_globals.opts =
- xtables_options_xfrm(
- iptables_globals.orig_opts,
- iptables_globals.opts,
- xt_t->x6_options,
- &xt_t->option_offset);
- else
- iptables_globals.opts =
- xtables_merge_options(
- iptables_globals.orig_opts,
- iptables_globals.opts,
- xt_t->extra_opts,
- &xt_t->option_offset);
+ switch (table->type) {
+ case AF_INET:
+ if (xt_t->x6_options)
+ iptables_globals.opts =
+ xtables_options_xfrm(
+ iptables_globals.orig_opts,
+ iptables_globals.opts,
+ xt_t->x6_options,
+ &xt_t->option_offset);
+ else
+ iptables_globals.opts =
+ xtables_merge_options(
+ iptables_globals.orig_opts,
+ iptables_globals.opts,
+ xt_t->extra_opts,
+ &xt_t->option_offset);
+
+ if (!iptables_globals.opts) {
+ g_free(xt_t->t);
+ xt_t = NULL;
+ }
- if (iptables_globals.opts == NULL) {
- g_free(xt_t->t);
- xt_t = NULL;
+ break;
+ case AF_INET6:
+ if (xt_t->x6_options)
+ ip6tables_globals.opts =
+ xtables_options_xfrm(
+ ip6tables_globals.orig_opts,
+ ip6tables_globals.opts,
+ xt_t->x6_options,
+ &xt_t->option_offset);
+ else
+ ip6tables_globals.opts =
+ xtables_merge_options(
+ ip6tables_globals.orig_opts,
+ ip6tables_globals.opts,
+ xt_t->extra_opts,
+ &xt_t->option_offset);
+
+ if (!ip6tables_globals.opts) {
+ g_free(xt_t->t);
+ xt_t = NULL;
+ }
+
+ break;
}
return xt_t;
{
struct xtables_match *xt_m;
size_t match_size;
+ int err;
+
+ if (!table || !match_name)
+ return NULL;
+
+ enable_jmp();
- if (match_name == NULL)
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
return NULL;
+ }
xt_m = xtables_find_match(match_name, XTF_LOAD_MUST_SUCCEED, xt_rm);
- match_size = ALIGN(sizeof(struct ipt_entry_match)) + xt_m->size;
+
+ disable_jmp();
+
+ switch (table->type) {
+ case AF_INET:
+ match_size = XT_ALIGN(sizeof(struct ipt_entry_match)) +
+ xt_m->size;
+ break;
+ case AF_INET6:
+ match_size = XT_ALIGN(sizeof(struct ip6t_entry_match)) +
+ xt_m->size;
+ break;
+ default:
+ return NULL;
+ }
xt_m->m = g_try_malloc0(match_size);
- if (xt_m->m == NULL)
+ if (!xt_m->m)
return NULL;
xt_m->m->u.match_size = match_size;
g_stpcpy(xt_m->m->u.user.name, xt_m->name);
xt_m->m->u.user.revision = xt_m->revision;
- if (xt_m->init != NULL)
+ if (xt_m->init)
xt_m->init(xt_m->m);
- if (xt_m->x6_options != NULL)
- iptables_globals.opts =
- xtables_options_xfrm(
- iptables_globals.orig_opts,
- iptables_globals.opts,
- xt_m->x6_options,
- &xt_m->option_offset);
- else
+ switch (table->type) {
+ case AF_INET:
+ if (xt_m->x6_options)
+ iptables_globals.opts =
+ xtables_options_xfrm(
+ iptables_globals.orig_opts,
+ iptables_globals.opts,
+ xt_m->x6_options,
+ &xt_m->option_offset);
+ else
iptables_globals.opts =
- xtables_merge_options(
- iptables_globals.orig_opts,
- iptables_globals.opts,
- xt_m->extra_opts,
- &xt_m->option_offset);
+ xtables_merge_options(
+ iptables_globals.orig_opts,
+ iptables_globals.opts,
+ xt_m->extra_opts,
+ &xt_m->option_offset);
- if (iptables_globals.opts == NULL) {
- g_free(xt_m->m);
- xt_m = NULL;
+ if (!iptables_globals.opts) {
+ g_free(xt_m->m);
+
+ if (xt_m == xt_m->next)
+ free(xt_m);
+
+ xt_m = NULL;
+ }
+
+ break;
+ case AF_INET6:
+ if (xt_m->x6_options)
+ ip6tables_globals.opts =
+ xtables_options_xfrm(
+ ip6tables_globals.orig_opts,
+ ip6tables_globals.opts,
+ xt_m->x6_options,
+ &xt_m->option_offset);
+ else
+ ip6tables_globals.opts =
+ xtables_merge_options(
+ ip6tables_globals.orig_opts,
+ ip6tables_globals.opts,
+ xt_m->extra_opts,
+ &xt_m->option_offset);
+
+ if (!ip6tables_globals.opts) {
+ g_free(xt_m->m);
+
+ if (xt_m == xt_m->next)
+ free(xt_m);
+
+ xt_m = NULL;
+ }
+
+ break;
+ }
+
+ return xt_m;
+}
+
+static int parse_ip_and_mask(const char *str, struct in_addr *ip,
+ struct in_addr *mask)
+{
+ char **tokens;
+ uint32_t prefixlength;
+ uint32_t tmp;
+ int err;
+
+ tokens = g_strsplit(str, "/", 2);
+ if (!tokens)
+ return -1;
+
+ if (inet_pton(AF_INET, tokens[0], ip) != 1) {
+ err = -1;
+ goto out;
+ }
+
+ if (tokens[1]) {
+ prefixlength = strtol(tokens[1], NULL, 10);
+ if (prefixlength > 32) {
+ err = -1;
+ goto out;
+ } else if (prefixlength == 32) {
+ tmp = 0xffffffff;
+ } else {
+ tmp = ~(0xffffffff >> prefixlength);
+ }
+ } else {
+ tmp = 0xffffffff;
}
- return xt_m;
+ mask->s_addr = htonl(tmp);
+ ip->s_addr = ip->s_addr & mask->s_addr;
+ err = 0;
+out:
+ g_strfreev(tokens);
+
+ return err;
}
-static int parse_ip_and_mask(const char *str, struct in_addr *ip, struct in_addr *mask)
+static int parse_ipv6_and_mask(const char *str, struct in6_addr *ip,
+ struct in6_addr *mask)
{
char **tokens;
uint32_t prefixlength;
- uint32_t tmp;
+ struct in6_addr in6;
+ int i, j;
int err;
tokens = g_strsplit(str, "/", 2);
- if (tokens == NULL)
+ if (!tokens)
return -1;
- if (!inet_pton(AF_INET, tokens[0], ip)) {
+ if (inet_pton(AF_INET6, tokens[0], ip) != 1) {
err = -1;
goto out;
}
- if (tokens[1] != NULL) {
+ if (tokens[1]) {
prefixlength = strtol(tokens[1], NULL, 10);
- if (prefixlength > 31) {
+ if (prefixlength > 128) {
err = -1;
goto out;
}
-
- tmp = ~(0xffffffff >> prefixlength);
} else {
- tmp = 0xffffffff;
+ prefixlength = 128;
}
- mask->s_addr = htonl(tmp);
- ip->s_addr = ip->s_addr & mask->s_addr;
+ /*
+ * This part was adapted from (no need to re-invent the wheel):
+ * https://gitlab.com/ipcalc/ipcalc/blob/master/ipcalc.c#L733
+ */
+ memset(&in6, 0, sizeof(struct in6_addr));
+
+ for (i = prefixlength, j = 0; i > 0; i -= 8, j++) {
+ if (i >= 8)
+ in6.s6_addr[j] = 0xff;
+ else
+ in6.s6_addr[j] = (unsigned long)(0xffU << (8 - i));
+ }
+
+ memcpy(mask, &in6, sizeof(struct in6_addr));
+
+ for (i = 0; i < 16 ; i++)
+ ip->s6_addr[i] = ip->s6_addr[i] & mask->s6_addr[i];
+
err = 0;
out:
g_strfreev(tokens);
return err;
}
-static struct connman_iptables *get_table(const char *table_name)
+static struct connman_iptables *get_table(int type, const char *table_name)
{
- struct connman_iptables *table;
+ struct connman_iptables *table = NULL;
- if (table_name == NULL)
+ if (!table_name)
table_name = "filter";
- table = g_hash_table_lookup(table_hash, table_name);
- if (table != NULL)
+ table = hash_table_lookup(type, table_name);
+
+ if (table)
return table;
- table = iptables_init(table_name);
- if (table == NULL)
+ table = iptables_init(type, table_name);
+
+ if (!table)
return NULL;
+ if (table->name)
+ g_free(table->name);
+
table->name = g_strdup(table_name);
- g_hash_table_replace(table_hash, table->name, table);
+
+ hash_table_replace(type, table->name, table);
return table;
}
struct parse_context {
+ int type;
int argc;
char **argv;
struct ipt_ip *ip;
+ struct ip6t_ip6 *ipv6;
struct xtables_target *xt_t;
- struct xtables_match *xt_m;
+ GList *xt_m;
struct xtables_rule_match *xt_rm;
+ uint16_t proto;
};
static int prepare_getopt_args(const char *str, struct parse_context *ctx)
/* Don't forget the last NULL entry */
ctx->argv = g_try_malloc0((ctx->argc + 1) * sizeof(char *));
- if (ctx->argv == NULL) {
+ if (!ctx->argv) {
g_strfreev(tokens);
return -ENOMEM;
}
return 0;
}
-static int parse_xt_modules(int c, connman_bool_t invert,
+static int parse_xt_modules(int c, bool invert,
struct parse_context *ctx)
{
struct xtables_match *m;
struct xtables_rule_match *rm;
+ struct ipt_entry fw;
+ struct ip6t_entry fw6;
+ int err;
+
+ switch (ctx->type) {
+ case AF_INET:
+ memset(&fw, 0, sizeof(fw));
+
+ /* The SNAT parser wants to know the protocol. */
+ if (ctx->proto == 0)
+ ctx->proto = IPPROTO_IP;
+
+ fw.ip.proto = ctx->proto;
+ break;
+ case AF_INET6:
+ memset(&fw6, 0, sizeof(fw6));
- for (rm = ctx->xt_rm; rm != NULL; rm = rm->next) {
+ if (ctx->proto == 0)
+ ctx->proto = IPPROTO_IPV6;
+
+ fw6.ipv6.proto = ctx->proto;
+
+ /* Flags must be set for IPv6 if protocol is set. */
+ fw6.ipv6.flags |= IP6T_F_PROTO;
+
+ break;
+ default:
+ return 0;
+ }
+
+ for (rm = ctx->xt_rm; rm; rm = rm->next) {
if (rm->completed != 0)
continue;
m = rm->match;
- if (m->x6_parse == NULL && m->parse == NULL)
+ if (!m->x6_parse && !m->parse)
continue;
if (c < (int) m->option_offset ||
+ XT_OPTION_OFFSET_SCALE)
continue;
- xtables_option_mpcall(c, ctx->argv, invert, m, NULL);
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return -EINVAL;
+ }
+
+ switch (ctx->type) {
+ case AF_INET:
+ xtables_option_mpcall(c, ctx->argv, invert, m, &fw);
+ break;
+ case AF_INET6:
+ xtables_option_mpcall(c, ctx->argv, invert, m, &fw6);
+ break;
+ }
+
+ disable_jmp();
}
- if (ctx->xt_t == NULL)
+ if (!ctx->xt_t)
return 0;
- if (ctx->xt_t->x6_parse == NULL && ctx->xt_t->parse == NULL)
+ if (!ctx->xt_t->x6_parse && !ctx->xt_t->parse)
return 0;
if (c < (int) ctx->xt_t->option_offset ||
+ XT_OPTION_OFFSET_SCALE)
return 0;
- xtables_option_tpcall(c, ctx->argv, invert, ctx->xt_t, NULL);
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return -EINVAL;
+ }
+
+ switch (ctx->type) {
+ case AF_INET:
+ xtables_option_tpcall(c, ctx->argv, invert, ctx->xt_t, &fw);
+ break;
+ case AF_INET6:
+ xtables_option_tpcall(c, ctx->argv, invert, ctx->xt_t, &fw6);
+ break;
+ }
+
+ disable_jmp();
return 0;
}
static int final_check_xt_modules(struct parse_context *ctx)
{
struct xtables_rule_match *rm;
+ int err;
+
+ for (rm = ctx->xt_rm; rm; rm = rm->next) {
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return -EINVAL;
+ }
- for (rm = ctx->xt_rm; rm != NULL; rm = rm->next)
xtables_option_mfcall(rm->match);
- if (ctx->xt_t != NULL)
+ disable_jmp();
+ }
+
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value %d", err);
+ disable_jmp();
+ return -EINVAL;
+ }
+
+ if (ctx->xt_t)
xtables_option_tfcall(ctx->xt_t);
+ disable_jmp();
+
return 0;
}
* - if '!' is found, set the invert flag to true and
* removes the '!' from the optarg string and jumps
* back to getopt to reparse the current optarg string.
- * After reparsing the invert flag is reseted to false.
+ * After reparsing the invert flag is reset to false.
* - If 'm' or 'j' is found then call either
* prepare_matches() or prepare_target(). Those function
* will modify (extend) the longopts for getopt_long.
* xtables_option_mpcall() depending on which version
* of libxtables is found.
*/
- connman_bool_t invert = FALSE;
+ struct xtables_match *xt_m;
+ bool invert = false;
int len, c, err;
- ctx->ip = g_try_new0(struct ipt_ip, 1);
- if (ctx->ip == NULL)
- return -ENOMEM;
+ if (ctx->type != table->type) {
+ DBG("ctx->type %d does not match table->type %d", ctx->type,
+ table->type);
+ return -EINVAL;
+ }
+
+ switch (ctx->type) {
+ case AF_INET:
+ ctx->ip = g_try_new0(struct ipt_ip, 1);
+ if (!ctx->ip)
+ return -ENOMEM;
+
+ break;
+ case AF_INET6:
+ ctx->ipv6 = g_try_new0(struct ip6t_ip6, 1);
+ if (!ctx->ipv6)
+ return -ENOMEM;
+
+ break;
+ default:
+ return -EINVAL;
+ }
/*
* Tell getopt_long not to generate error messages for unknown
optind = 0;
while ((c = getopt_long(ctx->argc, ctx->argv,
- "-:d:i:o:s:m:j:",
- iptables_globals.opts, NULL)) != -1) {
+ "-:d:i:o:s:m:j:p:",
+ ctx->type == AF_INET ?
+ iptables_globals.opts :
+ ip6tables_globals.opts,
+ NULL)) != -1) {
switch (c) {
case 's':
- /* Source specification */
- if (!parse_ip_and_mask(optarg,
- &ctx->ip->src,
- &ctx->ip->smsk))
- break;
+ if (ctx->type == AF_INET) {
+ /* Source specification */
+ if (!parse_ip_and_mask(optarg,
+ &ctx->ip->src,
+ &ctx->ip->smsk))
+ break;
+
+ if (invert)
+ ctx->ip->invflags |= IPT_INV_SRCIP;
+ }
- if (invert)
- ctx->ip->invflags |= IPT_INV_SRCIP;
+ if (ctx->type == AF_INET6) {
+ if (!parse_ipv6_and_mask(optarg,
+ &ctx->ipv6->src,
+ &ctx->ipv6->smsk))
+ break;
+
+ if (invert)
+ ctx->ipv6->invflags |= IP6T_INV_SRCIP;
+ }
break;
case 'd':
- /* Destination specification */
- if (!parse_ip_and_mask(optarg,
- &ctx->ip->dst,
- &ctx->ip->dmsk))
- break;
+ if (ctx->type == AF_INET) {
+ /* Destination specification */
+ if (!parse_ip_and_mask(optarg,
+ &ctx->ip->dst,
+ &ctx->ip->dmsk))
+ break;
+
+ if (invert)
+ ctx->ip->invflags |= IPT_INV_DSTIP;
+ }
+
+ if (ctx->type == AF_INET6) {
+ /* Destination specification */
+ if (!parse_ipv6_and_mask(optarg,
+ &ctx->ipv6->dst,
+ &ctx->ipv6->dmsk))
+ break;
+
+ if (invert)
+ ctx->ipv6->invflags |= IP6T_INV_DSTIP;
+ }
- if (invert)
- ctx->ip->invflags |= IPT_INV_DSTIP;
break;
case 'i':
/* In interface specification */
if (len + 1 > IFNAMSIZ)
break;
- g_stpcpy(ctx->ip->iniface, optarg);
- memset(ctx->ip->iniface_mask, 0xff, len + 1);
+ if (ctx->type == AF_INET) {
+ g_stpcpy(ctx->ip->iniface, optarg);
+ memset(ctx->ip->iniface_mask, 0xff, len + 1);
+
+ if (invert)
+ ctx->ip->invflags |= IPT_INV_VIA_IN;
+ }
+
+ if (ctx->type == AF_INET6) {
+ g_stpcpy(ctx->ipv6->iniface, optarg);
+ memset(ctx->ipv6->iniface_mask, 0xff, len + 1);
- if (invert)
- ctx->ip->invflags |= IPT_INV_VIA_IN;
+ if (invert)
+ ctx->ipv6->invflags |= IP6T_INV_VIA_IN;
+ }
break;
case 'o':
if (len + 1 > IFNAMSIZ)
break;
- g_stpcpy(ctx->ip->outiface, optarg);
- memset(ctx->ip->outiface_mask, 0xff, len + 1);
+ if (ctx->type == AF_INET) {
+ g_stpcpy(ctx->ip->outiface, optarg);
+ memset(ctx->ip->outiface_mask, 0xff, len + 1);
+
+ if (invert)
+ ctx->ip->invflags |= IPT_INV_VIA_OUT;
+ }
+
+ if (ctx->type == AF_INET6) {
+ g_stpcpy(ctx->ipv6->outiface, optarg);
+ memset(ctx->ipv6->outiface_mask, 0xff, len + 1);
- if (invert)
- ctx->ip->invflags |= IPT_INV_VIA_OUT;
+ if (invert)
+ ctx->ipv6->invflags |= IP6T_INV_VIA_OUT;
+ }
break;
case 'm':
/* Matches */
- ctx->xt_m = prepare_matches(table, &ctx->xt_rm, optarg);
- if (ctx->xt_m == NULL) {
+ xt_m = prepare_matches(table, &ctx->xt_rm, optarg);
+ if (!xt_m) {
+ err = -EINVAL;
+ goto out;
+ }
+ ctx->xt_m = g_list_append(ctx->xt_m, xt_m);
+
+ break;
+ case 'p':
+ enable_jmp();
+
+ if ((err = setjmp(env_state)) != 0) {
+ DBG("setjmp() called by longjmp() with value "
+ "%d", err);
+ disable_jmp();
+
+ /* Errors from parse_rule_spec are negative */
err = -EINVAL;
goto out;
}
+ ctx->proto = xtables_parse_protocol(optarg);
+
+ disable_jmp();
+
+ /*
+ * If protocol was set add it to ipt_ip.
+ * xtables_parse_protocol() returns 0 or
+ * UINT16_MAX (-1) on error
+ */
+ if (ctx->proto > 0 && ctx->proto < UINT16_MAX) {
+ if (ctx->type == AF_INET)
+ ctx->ip->proto = ctx->proto;
+
+ if (ctx->type == AF_INET6) {
+ ctx->ipv6->proto = ctx->proto;
+
+ /*
+ * Flags must be set for IPv6 if
+ * protocol is set.
+ */
+ ctx->ipv6->flags |= IP6T_F_PROTO;
+ }
+ }
break;
case 'j':
/* Target */
ctx->xt_t = prepare_target(table, optarg);
- if (ctx->xt_t == NULL) {
+ if (!ctx->xt_t) {
err = -EINVAL;
goto out;
}
break;
case 1:
if (optarg[0] == '!' && optarg[1] == '\0') {
- invert = TRUE;
+ invert = true;
/* Remove the '!' from the optarg */
optarg[0] = '\0';
/*
- * And recall getopt_long without reseting
+ * And recall getopt_long without resetting
* invert.
*/
continue;
err = parse_xt_modules(c, invert, ctx);
if (err == 1)
continue;
+ else if (err == -EINVAL)
+ goto out;
break;
}
- invert = FALSE;
+ invert = false;
}
err = final_check_xt_modules(ctx);
return err;
}
+static int current_type = -1;
+
+static int setup_xtables(int type)
+{
+ int err;
+
+ DBG("%d", type);
+
+ if (type == current_type)
+ return 0;
+
+ if (current_type != -1)
+ reset_xtables();
+
+ switch (type) {
+ case AF_INET:
+ err = xtables_init_all(&iptables_globals, NFPROTO_IPV4);
+ break;
+ case AF_INET6:
+ err = xtables_init_all(&ip6tables_globals, NFPROTO_IPV6);
+ break;
+ default:
+ return -1;
+ }
+
+ if (!err) {
+ current_type = type;
+ } else {
+ connman_error("error initializing xtables");
+ current_type = -1;
+ reset_xtables();
+ }
+
+ return err;
+}
+
static void reset_xtables(void)
{
struct xtables_match *xt_m;
* Clear all flags because the flags are only valid
* for one rule.
*/
- for (xt_m = xtables_matches; xt_m != NULL; xt_m = xt_m->next)
+ for (xt_m = xtables_matches; xt_m; xt_m = xt_m->next)
xt_m->mflags = 0;
- for (xt_t = xtables_targets; xt_t != NULL; xt_t = xt_t->next) {
+ for (xt_t = xtables_targets; xt_t; xt_t = xt_t->next) {
xt_t->tflags = 0;
xt_t->used = 0;
}
static void cleanup_parse_context(struct parse_context *ctx)
{
struct xtables_rule_match *rm, *tmp;
+ GList *list;
g_strfreev(ctx->argv);
+
g_free(ctx->ip);
- if (ctx->xt_t != NULL) {
+ g_free(ctx->ipv6);
+
+ if (ctx->xt_t) {
g_free(ctx->xt_t->t);
ctx->xt_t->t = NULL;
}
- if (ctx->xt_m != NULL) {
- g_free(ctx->xt_m->m);
- ctx->xt_m->m = NULL;
+
+ for (list = ctx->xt_m; list; list = list->next) {
+ struct xtables_match *xt_m = list->data;
+
+ g_free(xt_m->m);
+
+ if (xt_m != xt_m->next)
+ continue;
+
+ g_free(xt_m);
}
- for (tmp = NULL, rm = ctx->xt_rm; rm != NULL; rm = rm->next) {
- if (tmp != NULL)
+ g_list_free(ctx->xt_m);
+
+ for (tmp = NULL, rm = ctx->xt_rm; rm; rm = rm->next) {
+ if (tmp)
g_free(tmp);
tmp = rm;
}
g_free(ctx);
}
-int __connman_iptables_dump(const char *table_name)
+int __connman_iptables_dump(int type, const char *table_name)
{
struct connman_iptables *table;
- DBG("-t %s -L", table_name);
+ DBG("%d -t %s -L", type, table_name);
- table = get_table(table_name);
- if (table == NULL)
+ table = get_table(type, table_name);
+ if (!table)
return -EINVAL;
dump_table(table);
return 0;
}
-int __connman_iptables_new_chain(const char *table_name,
+int __connman_iptables_new_chain(int type,
+ const char *table_name,
const char *chain)
{
struct connman_iptables *table;
- DBG("-t %s -N %s", table_name, chain);
+ DBG("%d -t %s -N %s", type, table_name, chain);
- table = get_table(table_name);
- if (table == NULL)
+ table = get_table(type, table_name);
+ if (!table) {
return -EINVAL;
+ }
+
+ switch (type) {
+ case AF_INET:
+ case AF_INET6:
+ return iptables_add_chain(table, chain);
+ }
- return iptables_add_chain(table, chain);
+ return -EINVAL;
}
-int __connman_iptables_delete_chain(const char *table_name,
+int __connman_iptables_delete_chain(int type,
+ const char *table_name,
const char *chain)
{
struct connman_iptables *table;
- DBG("-t %s -X %s", table_name, chain);
+ DBG("%d -t %s -X %s", type, table_name, chain);
- table = get_table(table_name);
- if (table == NULL)
+ table = get_table(type, table_name);
+ if (!table)
return -EINVAL;
return iptables_delete_chain(table, chain);
}
-int __connman_iptables_flush_chain(const char *table_name,
+int __connman_iptables_flush_chain(int type,
+ const char *table_name,
const char *chain)
{
struct connman_iptables *table;
- DBG("-t %s -F %s", table_name, chain);
+ DBG("%d -t %s -F %s", type, table_name, chain);
- table = get_table(table_name);
- if (table == NULL)
+ table = get_table(type, table_name);
+ if (!table)
return -EINVAL;
return iptables_flush_chain(table, chain);
}
-int __connman_iptables_change_policy(const char *table_name,
+int __connman_iptables_find_chain(int type,
+ const char *table_name,
+ const char *chain)
+{
+ struct connman_iptables *table;
+
+ DBG("%d -t %s -F %s", type, table_name, chain);
+
+ table = get_table(type, table_name);
+ if (!table)
+ return -EINVAL;
+
+ if(!find_chain_head(table, chain))
+ return -ENOENT; // Not Found
+
+ return 0; // Found
+}
+
+int __connman_iptables_change_policy(int type,
+ const char *table_name,
const char *chain,
const char *policy)
{
struct connman_iptables *table;
- DBG("-t %s -F %s", table_name, chain);
+ DBG("%d -t %s -F %s", type, table_name, chain);
- table = get_table(table_name);
- if (table == NULL)
+ table = get_table(type, table_name);
+ if (!table)
return -EINVAL;
return iptables_change_policy(table, chain, policy);
}
-int __connman_iptables_append(const char *table_name,
+static void iptables_ip_setup(struct iptables_ip *ip, struct parse_context *ctx)
+{
+ if (!ip || !ctx)
+ return;
+
+ ip->type = ctx->type;
+ ip->ip = ctx->ip;
+ ip->ip6 = ctx->ipv6;
+}
+
+int __connman_iptables_append(int type,
+ const char *table_name,
+ const char *chain,
+ const char *rule_spec)
+{
+ struct connman_iptables *table;
+ struct parse_context *ctx;
+ struct iptables_ip ip = { 0 };
+ const char *target_name;
+ int err;
+
+ err = setup_xtables(type);
+
+ if (err < 0)
+ return err;
+
+ ctx = g_try_new0(struct parse_context, 1);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->type = type;
+
+ DBG("%d -t %s -A %s %s", type, table_name, chain, rule_spec);
+
+ err = prepare_getopt_args(rule_spec, ctx);
+ if (err < 0)
+ goto out;
+
+ table = get_table(type, table_name);
+ if (!table) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = parse_rule_spec(table, ctx);
+ if (err < 0)
+ goto out;
+
+ if (!ctx->xt_t)
+ target_name = NULL;
+ else
+ target_name = ctx->xt_t->name;
+
+ iptables_ip_setup(&ip, ctx);
+
+ err = iptables_append_rule(table, &ip, chain, target_name, ctx->xt_t,
+ ctx->xt_rm);
+out:
+ cleanup_parse_context(ctx);
+ reset_xtables();
+
+ return err;
+}
+
+int __connman_iptables_insert(int type,
+ const char *table_name,
const char *chain,
const char *rule_spec)
{
struct connman_iptables *table;
struct parse_context *ctx;
+ struct iptables_ip ip = { 0 };
const char *target_name;
int err;
+ err = setup_xtables(type);
+
+ if (err < 0)
+ return err;
+
ctx = g_try_new0(struct parse_context, 1);
- if (ctx == NULL)
+ if (!ctx)
return -ENOMEM;
- DBG("-t %s -A %s %s", table_name, chain, rule_spec);
+ ctx->type = type;
+
+ DBG("%d -t %s -I %s %s", type, table_name, chain, rule_spec);
err = prepare_getopt_args(rule_spec, ctx);
if (err < 0)
goto out;
- table = get_table(table_name);
- if (table == NULL) {
+ table = get_table(type, table_name);
+ if (!table) {
err = -EINVAL;
goto out;
}
if (err < 0)
goto out;
- if (ctx->xt_t == NULL)
+ if (!ctx->xt_t)
target_name = NULL;
else
target_name = ctx->xt_t->name;
- err = iptables_append_rule(table, ctx->ip, chain,
- target_name, ctx->xt_t, ctx->xt_rm);
+ iptables_ip_setup(&ip, ctx);
+
+ err = iptables_insert_rule(table, &ip, chain, target_name, ctx->xt_t,
+ ctx->xt_rm);
out:
cleanup_parse_context(ctx);
reset_xtables();
return err;
}
-int __connman_iptables_delete(const char *table_name,
+int __connman_iptables_delete(int type,
+ const char *table_name,
const char *chain,
const char *rule_spec)
{
struct connman_iptables *table;
struct parse_context *ctx;
+ struct iptables_ip ip = { 0 };
const char *target_name;
int err;
+ err = setup_xtables(type);
+
+ if (err < 0)
+ return err;
+
ctx = g_try_new0(struct parse_context, 1);
- if (ctx == NULL)
+ if (!ctx)
return -ENOMEM;
- DBG("-t %s -D %s %s", table_name, chain, rule_spec);
+ ctx->type = type;
+
+ DBG("%d -t %s -D %s %s", type, table_name, chain, rule_spec);
err = prepare_getopt_args(rule_spec, ctx);
if (err < 0)
goto out;
- table = get_table(table_name);
- if (table == NULL) {
+ table = get_table(type, table_name);
+ if (!table) {
err = -EINVAL;
goto out;
}
if (err < 0)
goto out;
- if (ctx->xt_t == NULL)
+ if (!ctx->xt_t)
target_name = NULL;
else
target_name = ctx->xt_t->name;
- err = iptables_delete_rule(table, ctx->ip, chain,
- target_name, ctx->xt_t, ctx->xt_m,
- ctx->xt_rm);
+ iptables_ip_setup(&ip, ctx);
+
+ err = iptables_delete_rule(table, &ip, chain, target_name, ctx->xt_t,
+ ctx->xt_m, ctx->xt_rm);
out:
cleanup_parse_context(ctx);
reset_xtables();
return err;
}
-int __connman_iptables_commit(const char *table_name)
+int __connman_iptables_commit(int type, const char *table_name)
{
struct connman_iptables *table;
- struct ipt_replace *repl;
+ struct iptables_replace repl = { 0 };
int err;
+ struct xt_counters_info *counters;
+ struct connman_iptables_entry *e;
+ GList *list;
+ unsigned int cnt;
- DBG("%s", table_name);
+ err = setup_xtables(type);
- table = g_hash_table_lookup(table_hash, table_name);
- if (table == NULL)
+ if (err < 0)
+ return err;
+
+ DBG("%d %s", type, table_name);
+
+ repl.type = type;
+
+ table = hash_table_lookup(type, table_name);
+ if (!table)
return -EINVAL;
- repl = iptables_blob(table);
+ switch (type) {
+ case AF_INET:
+ repl.r = iptables_blob(table);
+ if (!repl.r)
+ return -ENOMEM;
- if (debug_enabled == TRUE)
- dump_ipt_replace(repl);
+ break;
+ case AF_INET6:
+ repl.r6 = ip6tables_blob(table);
+ if (!repl.r6)
+ return -ENOMEM;
+ }
- err = iptables_replace(table, repl);
+ if (debug_enabled)
+ dump_replace(&repl);
- g_free(repl->counters);
- g_free(repl);
+ err = iptables_replace(table, &repl);
if (err < 0)
- return err;
+ goto out_free;
+
+ counters = g_try_malloc0(sizeof(*counters) +
+ sizeof(struct xt_counters) * table->num_entries);
+ if (!counters) {
+ err = -ENOMEM;
+ goto out_hash_remove;
+ }
+ g_stpcpy(counters->name, iptables_table_get_info_name(table));
+ counters->num_counters = table->num_entries;
+ for (list = table->entries, cnt = 0; list; list = list->next, cnt++) {
+ e = list->data;
+ if (e->counter_idx >= 0) {
- g_hash_table_remove(table_hash, table_name);
+ switch (type) {
+ case AF_INET:
+ counters->counters[cnt] =
+ repl.r->counters[e->counter_idx];
+ break;
+ case AF_INET6:
+ counters->counters[cnt] =
+ repl.r6->counters[e->counter_idx];
+ break;
+ }
+ }
+ }
+ err = iptables_add_counters(table, counters);
+ g_free(counters);
- return 0;
+ if (err < 0)
+ goto out_hash_remove;
+
+ err = 0;
+
+out_hash_remove:
+ hash_table_remove(type, table_name);
+out_free:
+ if (type == AF_INET && repl.r)
+ g_free(repl.r->counters);
+
+ if (type == AF_INET6 && repl.r6)
+ g_free(repl.r6->counters);
+
+ g_free(repl.r);
+ g_free(repl.r6);
+
+ reset_xtables();
+
+ return err;
}
static void remove_table(gpointer user_data)
table_cleanup(table);
}
-static int flush_table_cb(struct ipt_entry *entry, int builtin,
+static int iterate_chains_cb(struct connman_iptables_entry *entry, int builtin,
unsigned int hook, size_t size,
unsigned int offset, void *user_data)
{
- GSList **chains = user_data;
+ struct cb_data *cbd = user_data;
+ connman_iptables_iterate_chains_cb_t cb = cbd->cb;
struct xt_entry_target *target;
- char *name;
- if (offset + entry->next_offset == size)
+ if (offset + iptables_entry_get_next_offset(entry) == size)
return 0;
- target = ipt_get_target(entry);
-
- if (!g_strcmp0(target->u.user.name, IPT_ERROR_TARGET))
- name = g_strdup((const char*)target->data);
- else if (builtin >= 0)
- name = g_strdup(hooknames[builtin]);
- else
- return 0;
+ target = iptables_entry_get_target(entry);
- *chains = g_slist_prepend(*chains, name);
+ if (!g_strcmp0(target->u.user.name, get_error_target(entry->type))) {
+ (*cb)((const char *)target->data, cbd->user_data);
+ } else if (builtin >= 0) {
+ (*cb)(hooknames[builtin], cbd->user_data);
+ }
return 0;
}
-void flush_table(const char *name)
+int __connman_iptables_iterate_chains(int type, const char *table_name,
+ connman_iptables_iterate_chains_cb_t cb,
+ void *user_data)
{
- GSList *chains = NULL, *list;
+ struct cb_data *cbd = cb_data_new(cb, user_data);
struct connman_iptables *table;
+ struct connman_iptables_entry entry = { 0 };
+ int err;
- table = get_table(name);
- if (table == NULL)
- return;
+ err = setup_xtables(type);
+#if defined TIZEN_EXT
+ if (err < 0) {
+ g_free(cbd);
+ return err;
+ }
+#else
+ if (err < 0)
+ return err;
+#endif
- iterate_entries(table->blob_entries->entrytable,
- table->info->valid_hooks,
- table->info->hook_entry,
- table->info->underflow,
- table->blob_entries->size,
- flush_table_cb, &chains);
+ table = get_table(type, table_name);
+ if (!table) {
+ g_free(cbd);
+ return -EINVAL;
+ }
+ entry.type = type;
- /*
- * The offset update code is fragile and it works
- * only safe if we remove elements and move forwards
- * in the table.
- */
- chains = g_slist_reverse(chains);
+ if (type == AF_INET)
+ entry.entry = table->blob_entries->entrytable;
- for (list = chains; list != NULL; list = list->next) {
- char *chain = list->data;
+ if (type == AF_INET6)
+ entry.entry6 = table->blob_entries6->entrytable;
- DBG("chain %s", chain);
- iptables_flush_chain(table, chain);
- }
+ iterate_entries(&entry,
+ iptables_table_get_info_valid_hooks(table),
+ iptables_table_get_info_hook_entry(table),
+ iptables_table_get_info_underflow(table),
+ iptables_table_get_entries_size(table),
+ iterate_chains_cb, cbd);
+
+ g_free(cbd);
+
+ reset_xtables();
- __connman_iptables_commit(name);
- g_slist_free_full(chains, g_free);
+ return 0;
}
int __connman_iptables_init(void)
DBG("");
if (getenv("CONNMAN_IPTABLES_DEBUG"))
- debug_enabled = TRUE;
+ debug_enabled = true;
table_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
NULL, remove_table);
- xtables_init_all(&iptables_globals, NFPROTO_IPV4);
+ table_hash_ipv6 = g_hash_table_new_full(g_str_hash, g_str_equal,
+ NULL, remove_table);
return 0;
}
DBG("");
g_hash_table_destroy(table_hash);
+ g_hash_table_destroy(table_hash_ipv6);
}
+
projects / platform / upstream / connman.git / blobdiff