static int rule_delete(struct firewall_handle *handle)
{
struct nftnl_rule *rule;
struct mnl_socket *nl;
int err;
DBG("");
rule = nftnl_rule_alloc();
if (!rule)
return -ENOMEM;
nftnl_rule_set(rule, NFTNL_RULE_TABLE, CONNMAN_TABLE);
nftnl_rule_set(rule, NFTNL_RULE_CHAIN, handle->chain);
nftnl_rule_set_u64(rule, NFTNL_RULE_HANDLE, handle->handle);
err = socket_open_and_bind(&nl);
if (err < 0) {
nftnl_rule_free(rule);
return err;
}
err = rule_cmd(nl, rule, NFT_MSG_DELRULE, NFPROTO_IPV4,
NLM_F_ACK, 0, NULL);
nftnl_rule_free(rule);
mnl_socket_close(nl);
return err;
}
int __connman_firewall_enable_nat(struct firewall_context *ctx,
char *address, unsigned char prefixlen,
char *interface)
{
struct mnl_socket *nl;
struct nftnl_rule *rule;
int err;
DBG("address %s/%d interface %s", address, (int)prefixlen, interface);
err = socket_open_and_bind(&nl);
if (err < 0)
return err;
err = build_rule_nat(address, prefixlen, interface, &rule);
if (err)
goto out;
ctx->rule.chain = CONNMAN_CHAIN_NAT_POST;
err = rule_cmd(nl, rule, NFT_MSG_NEWRULE, NFPROTO_IPV4,
NLM_F_APPEND|NLM_F_CREATE|NLM_F_ACK,
CALLBACK_RETURN_HANDLE, &ctx->rule.handle);
nftnl_rule_free(rule);
out:
mnl_socket_close(nl);
return err;
}
//Out cleanup callback, nothing interesting here
static void nt_linux_cleanup(struct neat_ctx *nc)
{
if (nc->mnl_sock)
mnl_socket_close(nc->mnl_sock);
free(nc->mnl_rcv_buf);
}
int main(void)
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
int ret;
nl = mnl_socket_open(NETLINK_ROUTE);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, RTMGRP_LINK, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, 0, 0, data_cb, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
int __connman_firewall_enable_snat(struct firewall_context *ctx,
int index, const char *ifname, const char *addr)
{
struct nftnl_rule *rule;
struct mnl_socket *nl;
int err;
DBG("");
err = socket_open_and_bind(&nl);
if (err < 0)
return err;
err = build_rule_snat(index, addr, &rule);
if (err)
goto out;
ctx->rule.chain = CONNMAN_CHAIN_NAT_POST;
err = rule_cmd(nl, rule, NFT_MSG_NEWRULE, NFPROTO_IPV4,
NLM_F_APPEND|NLM_F_CREATE|NLM_F_ACK,
CALLBACK_RETURN_HANDLE, &ctx->rule.handle);
nftnl_rule_free(rule);
out:
mnl_socket_close(nl);
return err;
}
static int cleanup_table_and_chains(void)
{
struct nftnl_table *table;
struct mnl_socket *nl;
int err;
DBG("");
err = socket_open_and_bind(&nl);
if (err < 0)
return -ENOMEM;
/*
* Cleanup everythying in one go. There is little point in
* step-by-step removal of rules and chains if you can get it
* as simple as this.
*/
/*
* # nft delete table connman
*/
table = build_table(CONNMAN_TABLE, NFPROTO_IPV4);
err = table_cmd(nl, table, NFT_MSG_DELTABLE, NFPROTO_IPV4, NLM_F_ACK);
mnl_socket_close(nl);
return err;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct genlmsghdr *genl;
int ret;
unsigned int seq, portid;
if (argc != 2) {
printf("%s [family name]\n", argv[0]);
exit(EXIT_FAILURE);
}
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = GENL_ID_CTRL;
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
nlh->nlmsg_seq = seq = time(NULL);
genl = mnl_nlmsg_put_extra_header(nlh, sizeof(struct genlmsghdr));
genl->cmd = CTRL_CMD_GETFAMILY;
genl->version = 1;
mnl_attr_put_u32(nlh, CTRL_ATTR_FAMILY_ID, GENL_ID_CTRL);
mnl_attr_put_strz(nlh, CTRL_ATTR_FAMILY_NAME, argv[1]);
nl = mnl_socket_open(NETLINK_GENERIC);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct rtmsg *rtm;
int ret;
unsigned int seq, portid;
if (argc != 2) {
fprintf(stderr, "Usage: %s <inet|inet6>\n", argv[0]);
exit(EXIT_FAILURE);
}
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = RTM_GETROUTE;
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
nlh->nlmsg_seq = seq = time(NULL);
rtm = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtmsg));
if (strcmp(argv[1], "inet") == 0)
rtm->rtm_family = AF_INET;
else if (strcmp(argv[1], "inet6") == 0)
rtm->rtm_family = AF_INET6;
nl = mnl_socket_open(NETLINK_ROUTE);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
if (ret <= MNL_CB_STOP)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
int nftnl_batch_is_supported(void)
{
struct mnl_socket *nl;
struct mnl_nlmsg_batch *b;
char buf[MNL_SOCKET_BUFFER_SIZE];
uint32_t seq = time(NULL), req_seq;
int ret;
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL)
return -1;
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0)
return -1;
b = mnl_nlmsg_batch_start(buf, sizeof(buf));
nftnl_batch_begin(mnl_nlmsg_batch_current(b), seq++);
mnl_nlmsg_batch_next(b);
req_seq = seq;
nftnl_set_nlmsg_build_hdr(mnl_nlmsg_batch_current(b),
NFT_MSG_NEWSET, AF_INET,
NLM_F_ACK, seq++);
mnl_nlmsg_batch_next(b);
nftnl_batch_end(mnl_nlmsg_batch_current(b), seq++);
mnl_nlmsg_batch_next(b);
ret = mnl_socket_sendto(nl, mnl_nlmsg_batch_head(b),
mnl_nlmsg_batch_size(b));
if (ret < 0)
goto err;
mnl_nlmsg_batch_stop(b);
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, req_seq, mnl_socket_get_portid(nl),
NULL, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
mnl_socket_close(nl);
/* We're sending an incomplete message to see if the kernel supports
* set messages in batches. EINVAL means that we sent an incomplete
* message with missing attributes. The kernel just ignores messages
* that we cannot include in the batch.
*/
return (ret == -1 && errno == EINVAL) ? 1 : 0;
err:
mnl_nlmsg_batch_stop(b);
return -1;
}
int main(int argc, char *argv[])
{
char buf[getpagesize()];
struct nlmsghdr *nlh;
struct genlmsghdr *genl;
struct mnl_socket *nl;
int ret;
unsigned int seq, oper, portid;
if (argc != 2) {
printf("%s <genetlink family ID>\n", argv[0]);
exit(EXIT_FAILURE);
}
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = atoi(argv[1]);
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
nlh->nlmsg_seq = seq = time(NULL);
genl = mnl_nlmsg_put_extra_header(nlh, sizeof(struct genlmsghdr));
genl->cmd = NLEX_CMD_GET;
nl = mnl_socket_open(NETLINK_GENERIC);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
ret = mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID);
if (ret == -1) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
if (ret == -1) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
ret = mnl_cb_run(buf, ret, seq, portid, cb, NULL);
if (ret == -1) {
perror("mnl_cb_run");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
printf("done\n");
return 0;
}
int main(void)
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct nfgenmsg *nfh;
uint32_t seq, portid;
int ret;
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = (NFNL_SUBSYS_CTNETLINK << 8) | IPCTNL_MSG_CT_GET;
nlh->nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP;
nlh->nlmsg_seq = seq = time(NULL);
nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
nfh->nfgen_family = AF_INET;
nfh->version = NFNETLINK_V0;
nfh->res_id = 0;
ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
if (ret == -1) {
perror("mnl_socket_sendto");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
while (1) {
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
if (ret == -1) {
perror("mnl_cb_run");
exit(EXIT_FAILURE);
} else if (ret <= MNL_CB_STOP)
break;
}
mnl_socket_close(nl);
return 0;
}
/* method: close */
static int mnl_socket__close__meth(lua_State *L) {
int this_flags_idx1 = 0;
mnl_socket * this_idx1;
int rc_mnl_socket_close_idx1 = 0;
this_idx1 = obj_type_mnl_socket_delete(L,1,&(this_flags_idx1));
if(!(this_flags_idx1 & OBJ_UDATA_FLAG_OWN)) { return 0; }
rc_mnl_socket_close_idx1 = mnl_socket_close(this_idx1);
lua_pushinteger(L, rc_mnl_socket_close_idx1);
return 1;
}
int __connman_firewall_enable_marking(struct firewall_context *ctx,
enum connman_session_id_type id_type,
char *id, const char *src_ip,
uint32_t mark)
{
struct nftnl_rule *rule;
struct mnl_socket *nl;
struct passwd *pw;
uid_t uid;
int err;
DBG("");
if (id_type == CONNMAN_SESSION_ID_TYPE_UID) {
pw = getpwnam(id);
if (!pw)
return -EINVAL;
uid = pw->pw_uid;
}
else if (!src_ip)
return -ENOTSUP;
err = socket_open_and_bind(&nl);
if (err < 0)
return err;
if (id_type == CONNMAN_SESSION_ID_TYPE_UID) {
err = build_rule_marking(uid, mark, &rule);
if (err < 0)
goto out;
ctx->rule.chain = CONNMAN_CHAIN_ROUTE_OUTPUT;
err = rule_cmd(nl, rule, NFT_MSG_NEWRULE, NFPROTO_IPV4,
NLM_F_APPEND|NLM_F_CREATE|NLM_F_ACK,
CALLBACK_RETURN_HANDLE, &ctx->rule.handle);
nftnl_rule_free(rule);
}
if (src_ip) {
err = build_rule_src_ip(src_ip, mark, &rule);
if (err < 0)
goto out;
ctx->rule.chain = CONNMAN_CHAIN_ROUTE_OUTPUT;
err = rule_cmd(nl, rule, NFT_MSG_NEWRULE, NFPROTO_IPV4,
NLM_F_APPEND|NLM_F_CREATE|NLM_F_ACK,
CALLBACK_RETURN_HANDLE, &ctx->rule.handle);
nftnl_rule_free(rule);
}
out:
mnl_socket_close(nl);
return err;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
int ret, type;
switch (argc) {
case 1:
type = NFT_OUTPUT_DEFAULT;
break;
case 2:
if (strcmp(argv[1], "xml") == 0) {
type = NFT_OUTPUT_XML;
} else if (strcmp(argv[1], "json") == 0) {
type = NFT_OUTPUT_JSON;
} else if (strcmp(argv[1], "default") == 0) {
type = NFT_OUTPUT_DEFAULT;
} else {
fprintf(stderr, "unknown format type `%s'\n", argv[1]);
return EXIT_FAILURE;
}
break;
default:
fprintf(stderr, "%s [<default|xml|json>]\n", argv[0]);
return EXIT_FAILURE;
}
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, (1 << (NFNLGRP_NFTABLES-1)), MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, 0, 0, events_cb, &type);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
int main(void)
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct rtgenmsg *rt;
int ret;
unsigned int seq, portid;
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = RTM_GETLINK;
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
nlh->nlmsg_seq = seq = time(NULL);
rt = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtgenmsg));
rt->rtgen_family = AF_PACKET;
nl = mnl_socket_open(NETLINK_ROUTE);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
if (ret <= MNL_CB_STOP)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
static enum nurs_return_t nfq_organize(struct nurs_producer *producer)
{
struct nfq_priv *priv = nurs_producer_context(producer);
if (nfq_common_organize(producer) != NURS_RET_OK)
return NURS_RET_ERROR;
priv->fd = nurs_fd_create(mnl_socket_get_fd(priv->nl),
NURS_FD_F_READ);
if (!priv->fd)
goto fail;
return NURS_RET_OK;
fail:
#ifdef NLMMAP
mnl_socket_unmap(priv->nlr);
#endif
mnl_socket_close(priv->nl);
return NURS_RET_ERROR;
}
int main(int argc, char ** argv) {
struct mnl_socket * nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
int ret;
program = argv[0];
printf("%s: %s v%s (compiled: %s)\n", argv[0], PROGNAME, VERSION, DATE);
if(!notify_init("Netlink-Notification")) {
fprintf(stderr, "%s: Can't create notify.\n", argv[0]);
exit(EXIT_FAILURE);
}
nl = mnl_socket_open(NETLINK_ROUTE);
if (!nl) {
fprintf(stderr, "%s: Can't create netlink socket.\n", argv[0]);
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, RTMGRP_LINK, MNL_SOCKET_AUTOPID) < 0) {
fprintf(stderr, "%s: Can't bind netlink socket.\n", argv[0]);
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, 0, 0, data_cb, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
fprintf(stderr, "%s: An error occured reading from netlink socket.\n", argv[0]);
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
int main(void)
{
char buf[getpagesize()];
struct nlmsghdr *nlh;
struct mnl_socket *nl;
int ret;
unsigned int seq, portid;
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = NLEX_MSG_UPD;
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
nlh->nlmsg_seq = seq = time(NULL);
nlh->nlmsg_pid = getpid();
mnl_attr_put_u32(nlh, NLE_MYVAR, 31337);
nl = mnl_socket_open(NETLINK_EXAMPLE);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_sendto");
exit(EXIT_FAILURE);
}
ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
if (ret == -1) {
perror("mnl_cb_callback");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
static int socket_open_and_bind(struct mnl_socket **n)
{
struct mnl_socket *nl = NULL;
int err;
nl = mnl_socket_open(NETLINK_NETFILTER);
if (!nl)
return -errno;
err = mnl_socket_bind(nl, 1 << (NFNLGRP_NFTABLES-1),
MNL_SOCKET_AUTOPID);
if (err < 0) {
err = errno;
mnl_socket_close(nl);
return -err;
}
*n = nl;
return 0;
}
static int msg_recv(struct mnl_socket *nl, mnl_cb_t callback, void *data, int seq)
{
int ret;
unsigned int portid;
char buf[MNL_SOCKET_BUFFER_SIZE];
portid = mnl_socket_get_portid(nl);
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, callback, data);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1)
perror("error");
mnl_socket_close(nl);
return ret;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
int ret;
unsigned int portid, queue_num;
if (argc != 2) {
printf("Usage: %s [queue_num]\n", argv[0]);
exit(EXIT_FAILURE);
}
queue_num = atoi(argv[1]);
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
nlh = nfq_build_cfg_pf_request(buf, NFQNL_CFG_CMD_PF_UNBIND);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
nlh = nfq_build_cfg_pf_request(buf, NFQNL_CFG_CMD_PF_BIND);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
nlh = nfq_build_cfg_request(buf, NFQNL_CFG_CMD_BIND, queue_num);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
nlh = nfq_build_cfg_params(buf, NFQNL_COPY_PACKET, 0xFFFF, queue_num);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
while (ret > 0) {
uint32_t id;
ret = mnl_cb_run(buf, ret, 0, portid, queue_cb, NULL);
if (ret < 0){
perror("mnl_cb_run");
exit(EXIT_FAILURE);
}
id = ret - MNL_CB_OK;
nlh = nfq_build_verdict(buf, id, queue_num, NF_ACCEPT);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
}
mnl_socket_close(nl);
return 0;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
uint32_t portid, seq, table_seq, family;
struct nft_table *t;
struct mnl_nlmsg_batch *batch;
int ret, batching;
if (argc != 3) {
fprintf(stderr, "%s <family> <name>\n", argv[0]);
exit(EXIT_FAILURE);
}
t = table_add_parse(argc, argv);
if (t == NULL)
exit(EXIT_FAILURE);
batching = nft_batch_is_supported();
if (batching < 0) {
perror("cannot talk to nfnetlink");
exit(EXIT_FAILURE);
}
seq = time(NULL);
batch = mnl_nlmsg_batch_start(buf, sizeof(buf));
if (batching) {
nft_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
mnl_nlmsg_batch_next(batch);
}
table_seq = seq;
family = nft_table_attr_get_u32(t, NFT_TABLE_ATTR_FAMILY);
nlh = nft_table_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
NFT_MSG_NEWTABLE, family,
NLM_F_ACK, seq++);
nft_table_nlmsg_build_payload(nlh, t);
nft_table_free(t);
mnl_nlmsg_batch_next(batch);
if (batching) {
nft_batch_end(mnl_nlmsg_batch_current(batch), seq++);
mnl_nlmsg_batch_next(batch);
}
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
mnl_nlmsg_batch_size(batch)) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
mnl_nlmsg_batch_stop(batch);
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, table_seq, portid, NULL, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct mnl_nlmsg_batch *batch;
uint32_t portid, seq;
struct nft_rule *r = NULL;
int ret, family;
if (argc < 4 || argc > 5) {
fprintf(stderr, "Usage: %s <family> <table> <chain> [<handle>]\n",
argv[0]);
exit(EXIT_FAILURE);
}
r = nft_rule_alloc();
if (r == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
if (strcmp(argv[1], "ip") == 0)
family = NFPROTO_IPV4;
else if (strcmp(argv[1], "ip6") == 0)
family = NFPROTO_IPV6;
else if (strcmp(argv[1], "bridge") == 0)
family = NFPROTO_BRIDGE;
else if (strcmp(argv[1], "arp") == 0)
family = NFPROTO_ARP;
else {
fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
exit(EXIT_FAILURE);
}
seq = time(NULL);
nft_rule_attr_set(r, NFT_RULE_ATTR_TABLE, argv[2]);
nft_rule_attr_set(r, NFT_RULE_ATTR_CHAIN, argv[3]);
/* If no handle is specified, delete all rules in the chain */
if (argc == 5)
nft_rule_attr_set_u64(r, NFT_RULE_ATTR_HANDLE, atoi(argv[4]));
batch = mnl_nlmsg_batch_start(buf, sizeof(buf));
nft_mnl_batch_put(mnl_nlmsg_batch_current(batch),
NFNL_MSG_BATCH_BEGIN, seq++);
mnl_nlmsg_batch_next(batch);
nlh = nft_rule_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
NFT_MSG_DELRULE,
family,
NLM_F_ACK, seq++);
nft_rule_nlmsg_build_payload(nlh, r);
nft_rule_free(r);
mnl_nlmsg_batch_next(batch);
nft_mnl_batch_put(mnl_nlmsg_batch_current(batch), NFNL_MSG_BATCH_END,
seq++);
mnl_nlmsg_batch_next(batch);
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
mnl_nlmsg_batch_size(batch)) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
mnl_nlmsg_batch_stop(batch);
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, 0, portid, NULL, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
void cleanup(void) {
if(nl != 0)
mnl_socket_close(nl);
free_net_devices();
}
void *nfacct_main(void *ptr) {
if(ptr) { ; }
info("NFACCT thread created with task id %d", gettid());
if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
error("nfacct.plugin: Cannot set pthread cancel type to DEFERRED.");
if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
error("nfacct.plugin: Cannot set pthread cancel state to ENABLE.");
char buf[MNL_SOCKET_BUFFER_SIZE];
struct mnl_socket *nl = NULL;
struct nlmsghdr *nlh = NULL;
unsigned int seq = 0, portid = 0;
seq = time(NULL) - 1;
nl = mnl_socket_open(NETLINK_NETFILTER);
if(!nl) {
error("nfacct.plugin: mnl_socket_open() failed");
pthread_exit(NULL);
return NULL;
}
if(mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
mnl_socket_close(nl);
error("nfacct.plugin: mnl_socket_bind() failed");
pthread_exit(NULL);
return NULL;
}
portid = mnl_socket_get_portid(nl);
// ------------------------------------------------------------------------
struct timeval last, now;
unsigned long long usec = 0, susec = 0;
RRDSET *st = NULL;
gettimeofday(&last, NULL);
// ------------------------------------------------------------------------
while(1) {
if(unlikely(netdata_exit)) break;
seq++;
nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_GET, NLM_F_DUMP, seq);
if(!nlh) {
mnl_socket_close(nl);
error("nfacct.plugin: nfacct_nlmsg_build_hdr() failed");
pthread_exit(NULL);
return NULL;
}
if(mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
error("nfacct.plugin: mnl_socket_send");
pthread_exit(NULL);
return NULL;
}
if(nfacct_list) nfacct_list->len = 0;
int ret;
while((ret = mnl_socket_recvfrom(nl, buf, sizeof(buf))) > 0) {
if((ret = mnl_cb_run(buf, ret, seq, portid, nfacct_callback, NULL)) <= 0) break;
}
if (ret == -1) {
error("nfacct.plugin: error communicating with kernel.");
pthread_exit(NULL);
return NULL;
}
// --------------------------------------------------------------------
gettimeofday(&now, NULL);
usec = usecdiff(&now, &last) - susec;
debug(D_NFACCT_LOOP, "nfacct.plugin: last loop took %llu usec (worked for %llu, sleeped for %llu).", usec + susec, usec, susec);
if(usec < (rrd_update_every * 1000000ULL / 2ULL)) susec = (rrd_update_every * 1000000ULL) - usec;
else susec = rrd_update_every * 1000000ULL / 2ULL;
// --------------------------------------------------------------------
if(nfacct_list && nfacct_list->len) {
int i;
st = rrdset_find_bytype("netfilter", "nfacct_packets");
if(!st) {
st = rrdset_create("netfilter", "nfacct_packets", NULL, "nfacct", NULL, "Netfilter Accounting Packets", "packets/s", 1006, rrd_update_every, RRDSET_TYPE_STACKED);
for(i = 0; i < nfacct_list->len ; i++)
rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
for(i = 0; i < nfacct_list->len ; i++) {
RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);
if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);
if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].pkts);
}
rrdset_done(st);
// ----------------------------------------------------------------
st = rrdset_find_bytype("netfilter", "nfacct_bytes");
if(!st) {
st = rrdset_create("netfilter", "nfacct_bytes", NULL, "nfacct", NULL, "Netfilter Accounting Bandwidth", "kilobytes/s", 1007, rrd_update_every, RRDSET_TYPE_STACKED);
for(i = 0; i < nfacct_list->len ; i++)
rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
for(i = 0; i < nfacct_list->len ; i++) {
RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);
if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);
if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].bytes);
}
rrdset_done(st);
}
// --------------------------------------------------------------------
usleep(susec);
// copy current to last
bcopy(&now, &last, sizeof(struct timeval));
}
mnl_socket_close(nl);
pthread_exit(NULL);
return NULL;
}
static int create_table_and_chains(struct nftables_info *nft_info)
{
struct mnl_socket *nl;
struct nftnl_table *table;
struct nftnl_chain *chain;
int err;
DBG("");
err = socket_open_and_bind(&nl);
if (err < 0)
return err;
/*
* Add table
* http://wiki.nftables.org/wiki-nftables/index.php/Configuring_tables
*/
/*
* # nft add table connman
*/
table = build_table(CONNMAN_TABLE, NFPROTO_IPV4);
if (!table) {
err = -ENOMEM;
goto out;
}
err = table_cmd(nl, table, NFT_MSG_NEWTABLE, NFPROTO_IPV4,
NLM_F_CREATE|NLM_F_ACK);
if (err < 0)
goto out;
/*
* Add basic chains
* http://wiki.nftables.org/wiki-nftables/index.php/Configuring_chains
*/
/*
* # nft add chain connman nat-prerouting \
* { type nat hook prerouting priority 0 ; }
*/
chain = build_chain(CONNMAN_CHAIN_NAT_PRE, CONNMAN_TABLE,
"nat", NF_INET_PRE_ROUTING, 0);
if (!chain) {
err = -ENOMEM;
goto out;
}
err = chain_cmd(nl, chain, NFT_MSG_NEWCHAIN,
NFPROTO_IPV4, NLM_F_CREATE | NLM_F_ACK,
CALLBACK_RETURN_NONE, NULL);
if (err < 0)
goto out;
/*
* # nft add chain connman nat-postrouting \
* { type nat hook postrouting priority 0 ; }
*/
chain = build_chain(CONNMAN_CHAIN_NAT_POST, CONNMAN_TABLE,
"nat", NF_INET_POST_ROUTING, 0);
if (!chain) {
err = -ENOMEM;
goto out;
}
err = chain_cmd(nl, chain, NFT_MSG_NEWCHAIN,
NFPROTO_IPV4, NLM_F_CREATE | NLM_F_ACK,
CALLBACK_RETURN_NONE, NULL);
if (err < 0)
goto out;
/*
* # nft add chain connman route-output \
* { type route hook output priority 0 ; }
*/
chain = build_chain(CONNMAN_CHAIN_ROUTE_OUTPUT, CONNMAN_TABLE,
"route", NF_INET_LOCAL_OUT, 0);
if (!chain) {
err = -ENOMEM;
goto out;
}
err = chain_cmd(nl, chain, NFT_MSG_NEWCHAIN,
NFPROTO_IPV4, NLM_F_CREATE | NLM_F_ACK,
CALLBACK_RETURN_NONE, NULL);
if (err < 0)
goto out;
out:
if (err)
connman_warn("Failed to create basic chains: %s",
strerror(-err));
mnl_socket_close(nl);
return err;
}
int main(void)
{
struct mnl_socket *nl;
struct nlmsghdr *nlh;
struct nfgenmsg *nfh;
char buf[MNL_SOCKET_BUFFER_SIZE];
unsigned int seq, portid;
struct nf_conntrack *ct;
int ret;
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = (NFNL_SUBSYS_CTNETLINK << 8) | IPCTNL_MSG_CT_DELETE;
nlh->nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
nlh->nlmsg_seq = seq = time(NULL);
nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
nfh->nfgen_family = AF_INET;
nfh->version = NFNETLINK_V0;
nfh->res_id = 0;
ct = nfct_new();
if (ct == NULL) {
perror("nfct_new");
return 0;
}
nfct_set_attr_u8(ct, ATTR_L3PROTO, AF_INET);
nfct_set_attr_u32(ct, ATTR_IPV4_SRC, inet_addr("1.1.1.1"));
nfct_set_attr_u32(ct, ATTR_IPV4_DST, inet_addr("2.2.2.2"));
nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP);
nfct_set_attr_u16(ct, ATTR_PORT_SRC, htons(20));
nfct_set_attr_u16(ct, ATTR_PORT_DST, htons(10));
nfct_nlmsg_build(nlh, ct);
ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
if (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
if (ret <= MNL_CB_STOP)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("mnl_socket_recvfrom");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return 0;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
uint32_t portid, seq, family, data;
struct nft_set *s;
struct nft_set_elem *e;
int ret;
if (argc != 4) {
fprintf(stderr, "%s <family> <table> <set>\n", argv[0]);
exit(EXIT_FAILURE);
}
s = nft_set_alloc();
if (s == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
seq = time(NULL);
if (strcmp(argv[1], "ip") == 0)
family = NFPROTO_IPV4;
else if (strcmp(argv[1], "ip6") == 0)
family = NFPROTO_IPV6;
else if (strcmp(argv[1], "bridge") == 0)
family = NFPROTO_BRIDGE;
else if (strcmp(argv[1], "arp") == 0)
family = NFPROTO_ARP;
else {
fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
exit(EXIT_FAILURE);
}
nft_set_attr_set(s, NFT_SET_ATTR_TABLE, argv[2]);
nft_set_attr_set(s, NFT_SET_ATTR_NAME, argv[3]);
/* Add to dummy elements to set */
e = nft_set_elem_alloc();
if (e == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
data = 0x1;
nft_set_elem_attr_set(e, NFT_SET_ELEM_ATTR_KEY, &data, sizeof(data));
nft_set_elem_add(s, e);
e = nft_set_elem_alloc();
if (e == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
data = 0x2;
nft_set_elem_attr_set(e, NFT_SET_ELEM_ATTR_KEY, &data, sizeof(data));
nft_set_elem_add(s, e);
nlh = nft_set_nlmsg_build_hdr(buf, NFT_MSG_NEWSETELEM, family,
NLM_F_CREATE|NLM_F_EXCL|NLM_F_ACK, seq);
nft_set_elems_nlmsg_build_payload(nlh, s);
nft_set_free(s);
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
uint32_t portid, seq, family;
uint32_t type = NFT_OUTPUT_DEFAULT;
struct nft_set *t = NULL;
int ret;
if (argc < 4 || argc > 5) {
fprintf(stderr, "%s <family> <table> <set> [<json|xml>]\n",
argv[0]);
return EXIT_FAILURE;
}
t = nft_set_alloc();
if (t == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
seq = time(NULL);
if (strcmp(argv[1], "ip") == 0)
family = NFPROTO_IPV4;
else if (strcmp(argv[1], "ip6") == 0)
family = NFPROTO_IPV6;
else if (strcmp(argv[1], "bridge") == 0)
family = NFPROTO_BRIDGE;
else if (strcmp(argv[1], "arp") == 0)
family = NFPROTO_ARP;
else {
fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
exit(EXIT_FAILURE);
}
if (argc == 5 && strcmp(argv[4], "json") == 0 )
type = NFT_OUTPUT_JSON;
else if (argc == 5 && strcmp(argv[4], "xml") == 0)
type = NFT_OUTPUT_XML;
nlh = nft_set_nlmsg_build_hdr(buf, NFT_MSG_GETSETELEM, family,
NLM_F_DUMP|NLM_F_ACK, seq);
nft_set_attr_set(t, NFT_SET_ATTR_NAME, argv[3]);
nft_set_attr_set(t, NFT_SET_ATTR_TABLE, argv[2]);
nft_set_elems_nlmsg_build_payload(nlh, t);
nft_set_free(t);
nl = mnl_socket_open(NETLINK_NETFILTER);
if (nl == NULL) {
perror("mnl_socket_open");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
while (ret > 0) {
ret = mnl_cb_run(buf, ret, seq, portid, set_cb, &type);
if (ret <= 0)
break;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
}
if (ret == -1) {
perror("error");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
return EXIT_SUCCESS;
}
static int32_t multi_link_event_loop(struct multi_config *mc){
struct multi_link_info *li;
pthread_attr_t detach_attr;
uint8_t buf[MAX_PIPE_MSG_LEN];
uint8_t mnl_buf[MNL_SOCKET_BUFFER_SIZE];
int32_t retval, numbytes;
uint32_t i;
int32_t mnl_sock_event, mnl_sock_set, mnl_sock_get;
fd_set masterfds, readfds;
int fdmax = 0;
struct timeval tv;
FD_ZERO(&masterfds);
FD_ZERO(&readfds);
//NETLINK_ROUTE is where I want to hook into the kernel
if(!(multi_link_nl_request = mnl_socket_open(NETLINK_ROUTE))){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not create mnl socket (request)\n");
return EXIT_FAILURE;
}
if(!(multi_link_nl_set = mnl_socket_open(NETLINK_ROUTE))){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not create mnl socket (set)\n");
return EXIT_FAILURE;
}
if(!(multi_link_nl_event = mnl_socket_open(NETLINK_ROUTE))){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not create mnl socket (event)\n");
return EXIT_FAILURE;
}
if(mnl_socket_bind(multi_link_nl_request, 0, MNL_SOCKET_AUTOPID) < 0){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not bind mnl event socket\n");
mnl_socket_close(multi_link_nl_event);
return EXIT_FAILURE;
}
if(mnl_socket_bind(multi_link_nl_set, 0, MNL_SOCKET_AUTOPID) < 0){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not bind mnl event socket\n");
mnl_socket_close(multi_link_nl_event);
return EXIT_FAILURE;
}
if(mnl_socket_bind(multi_link_nl_event, 1 << (RTNLGRP_LINK - 1), MNL_SOCKET_AUTOPID)
< 0){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Could not bind mnl event socket\n");
mnl_socket_close(multi_link_nl_event);
return EXIT_FAILURE;
}
if(pipe(multi_link_dhcp_pipes) < 0){
//perror("Pipe failed\n");
MULTI_DEBUG_PRINT_SYSLOG(stderr,"Pipe failed\n");
return EXIT_FAILURE;
}
/* Find interfaces that are already up, removes info and then reruns
* DHCP (need config) */
multi_link_populate_links_list();
/* Check if I have any PPP links. */
//TODO: Give this one a better name since it is not only for PPP any more
LIST_FOREACH_CB(&multi_link_links_2, next, multi_link_check_ppp, li, NULL);
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Done populating links list!\n");
if(multi_link_flush_links() == EXIT_FAILURE)
return EXIT_FAILURE;
//Go through already seen interfaces and start DHCP as needed
if(multi_link_num_links > 0){
pthread_attr_init(&detach_attr);
pthread_attr_setdetachstate(&detach_attr, PTHREAD_CREATE_DETACHED);
for(li = multi_link_links_2.lh_first; li != NULL;
li = li->next.le_next){
/* Start DHCP */
if(li->state == WAITING_FOR_DHCP){
MULTI_DEBUG_PRINT_SYSLOG(stderr, "Starting DHCP for existing "
"interface %s\n", li->dev_name);
pthread_create(&(li->dhcp_thread), &detach_attr,
multi_dhcp_main, (void *) li);
}
}
}
/* Do a scan of the list here to check for links with static IP/PPP */
LIST_FOREACH_CB(&multi_link_links_2, next, multi_link_check_link, li, mc);
mnl_sock_event = mnl_socket_get_fd(multi_link_nl_event);
mnl_sock_set = mnl_socket_get_fd(multi_link_nl_set);
mnl_sock_get = mnl_socket_get_fd(multi_link_nl_request);
FD_SET(mnl_sock_event, &masterfds);
fdmax = fdmax > mnl_sock_event ? fdmax : mnl_sock_event;
FD_SET(mnl_sock_get, &masterfds);
fdmax = fdmax > mnl_sock_get ? fdmax : mnl_sock_get;
FD_SET(mnl_sock_set, &masterfds);
fdmax = fdmax > mnl_sock_set ? fdmax : mnl_sock_set;
FD_SET(multi_link_dhcp_pipes[0], &masterfds);
fdmax = fdmax > multi_link_dhcp_pipes[0] ? fdmax : multi_link_dhcp_pipes[0];
tv.tv_sec = 5;
tv.tv_usec = 0;
while(1){
readfds = masterfds;
retval = select(fdmax+1, &readfds, NULL, NULL, &tv);
if(retval == 0){
//Check for any PPP that is marked as down
LIST_FOREACH_CB(&multi_link_links_2, next, multi_link_check_ppp,
li, NULL);
LIST_FOREACH_CB(&multi_link_links_2, next, multi_link_check_link,
li, mc);
tv.tv_sec = 5;
tv.tv_usec = 0;
continue;
}
//TODO: Rewrite this so I only call the callbacks at the end, not per
//message
for(i=0; i<=fdmax; i++){
if(FD_ISSET(i, &readfds)){
if (i == mnl_sock_event){
numbytes = mnl_socket_recvfrom(multi_link_nl_event,
mnl_buf, sizeof(mnl_buf));
mnl_cb_run(mnl_buf, numbytes, 0, 0,
multi_link_parse_netlink, mc);
LIST_FOREACH_CB(&multi_link_links_2, next,
multi_link_check_link, li, mc);
} else if (i == mnl_sock_set){
numbytes = mnl_socket_recvfrom(multi_link_nl_set, mnl_buf,
sizeof(mnl_buf));
} else if (i == mnl_sock_get){
numbytes = mnl_socket_recvfrom(multi_link_nl_request,
mnl_buf, sizeof(mnl_buf));
} else if (i == multi_link_dhcp_pipes[0]){
numbytes = read(i, buf, MAX_PIPE_MSG_LEN);
LIST_FOREACH_CB(&multi_link_links_2, next,
multi_link_check_link, li, mc);
multi_link_clean_links();
}
}
}
}
}