uint16_t unix_get_simple_reply(t_conf *conf, char *buffer, uint16_t id)
{
fd_set rfds;
int retval;
struct timeval tv;
struct dns_hdr *hdr;
int len = 0;
tv.tv_sec = (time_t) conf->conn_timeout;
tv.tv_usec = 0;
hdr = (struct dns_hdr *) buffer;
FD_ZERO(&rfds);
add_socket(conf->sd_udp, &rfds, 0);
while ((retval = select(conf->sd_udp+1, &rfds, NULL, NULL, &tv)) != -1)
{
if (!retval)
{
fprintf(stderr, "No response from DNS %s\n", conf->dns_server);
return (0);
}
if ((IS_THIS_SOCKET(conf->sd_udp, conf->event_udp, &rfds, retval))
&& ((len = read(conf->sd_udp, buffer, MAX_DNS_LEN)) > 0))
{
if (hdr->id == id)
return (len);
else
queue_get_udp_data(conf, buffer, len);
}
add_socket(conf->sd_udp, &rfds, 0);
tv.tv_sec = (time_t) conf->conn_timeout;
}
MYERROR("Select error");
return (0);
}
int unix_prepare_select(t_conf *conf, fd_set *rfds, struct timeval *tv)
{
int max_fd = 0;
t_simple_list *client;
FD_ZERO(rfds);
for (client = conf->client; client; client = client->next)
{
if (socket_is_valid(client->fd_ro))
{
queue_put_nop(conf, client);
if (!(client->control.data_pending >= MAX_DATA_SIZE)
&& (!(client->control.data_pending + client->control.nop_pending >= WINDOW_SIZE)))
{
if (socket_is_valid(client->fd_ro))
max_fd = add_socket(client->fd_ro, rfds, max_fd);
}
}
}
max_fd = add_socket(conf->sd_udp, rfds, max_fd);
// f**k Windows, not queue debug
if ((!conf->use_stdin) && (debug > 1))
max_fd = add_socket(0, rfds, max_fd);
/* select only if sd_tcp is alive */
if (socket_is_valid(conf->sd_tcp))
max_fd = add_socket(conf->sd_tcp, rfds, max_fd);
tv->tv_sec = SOCKET_TIMEOUT;
tv->tv_usec = 0;
return (max_fd);
}
/**
* Create a new socket handle.
* @param family Must be {@code AF_INET}
* @param type Either SOCK_DGRAM or SOCK_STREAM
* @param protocol Either IPPROTO_UDP or IPPROTO_TCP
* @return
*/
sock_handle_t socket_create(uint8_t family, uint8_t type, uint8_t protocol, uint16_t port, network_interface_t nif)
{
if (family!=AF_INET || !((type==SOCK_DGRAM && protocol==IPPROTO_UDP) || (type==SOCK_STREAM && protocol==IPPROTO_TCP)))
return SOCKET_INVALID;
sock_handle_t result = SOCKET_INVALID;
socket_t* socket = new socket_t();
if (socket) {
wiced_result_t wiced_result;
socket->set_type((protocol==IPPROTO_UDP ? socket_t::UDP : socket_t::TCP));
if (protocol==IPPROTO_TCP) {
wiced_result = wiced_tcp_create_socket(tcp(socket), wiced_wlan_interface(nif));
}
else {
wiced_result = wiced_udp_create_socket(udp(socket), port, wiced_wlan_interface(nif));
}
if (wiced_result!=WICED_SUCCESS) {
socket->set_type(socket_t::NONE);
delete socket;
result = as_sock_result(wiced_result);
}
else {
SocketListLock lock(list_for(socket));
add_socket(socket);
result = as_sock_result(socket);
}
}
return result;
}
/*
* If your compiler can inline your callback (i.e. it is visible to it at the place of the set call and
* your compiler is good :), then the method will be fully inlined into the thunking function, making it
* as fast as a direct C callback.
*
* revents was bitset
*
* if (revents & EV_READ ) fd->revents |= fd->events & POLLIN;
* if (revents & EV_WRITE) fd->revents |= fd->events & POLLOUT;
*/
void CNetBackend::accept_cb(ev::io &w, int32 revents)
{
if ( EV_ERROR & revents ) //error
{
GERROR() << "accept_cb error:" << strerror(errno) << "\n";
w.stop();
return;
}
struct sockaddr_in socket_address;
int32 length = sizeof( socket_address );
//w.fd is m_plistenning_socket->get_listen_socket_fd()
int32 fd = accept( w.fd,(sockaddr *)&socket_address,(socklen_t *)&length );
if ( fd < 0 )
{
if ( EWOULDBLOCK == errno || EAGAIN == errno ) //无连接libev怎么会调用accept_cb
{
GERROR() << "accept_cb EWOULDBLOCK or EAGAIN found\n";
return;
}
GERROR() << "accept new connection fail:" << strerror( errno ) << "\n";
return;
}
add_socket( fd,socket_address );
}
void Gobby::GSelector::set(const net6::socket& sock, net6::io_condition cond)
{
// Lock mutex - required for connection establishment which happens
// in a different thread for the GUI to remain responsive.
// After the connection to Glib::signal_io() the main thread may be
// woken up immediately by incoming data and call GSelector::set to
// send out some data even before the assignment to the
// sigc::connection in the connecting thread has been finished!
Glib::RecMutex::Lock lock(*m_mutex);
map_type::iterator iter = m_map.find(&sock);
if(cond != net6::IO_NONE)
{
if(iter == m_map.end() )
add_socket(sock, cond);
else
modify_socket(iter, cond);
}
else if(iter != m_map.end() )
{
delete_socket(iter);
}
}
int main(int argc, char** argv)
{
struct configuration cfg;
int parent, sock, got;
unsigned int pkt_num = 0;
parse_options(argc, argv, &cfg);
/* Initialise */
parent = add_socket(&cfg);
do_ioctl(&cfg, parent);
sock = parent;
if( cfg.cfg_protocol == IPPROTO_TCP )
sock = accept_child(parent);
do_ts_sockopt(sock);
/* Run forever */
while( 1 ) {
pkt_num ++;
got = do_recv(sock, pkt_num);
/* TCP can detect an exit; for UDP, zero payload packets are valid */
if ( got == 0 && cfg.cfg_protocol == IPPROTO_TCP ) {
printf( "recvmsg returned 0 - end of stream\n" );
break;
}
}
close(sock);
if( cfg.cfg_protocol == IPPROTO_TCP )
close(parent);
return 0;
}
/* Un client */
static void* repeater(void* sck)
{
int sckt = (int) sck;
char buf[MAX_BUFFER];
int nbc, i;
const char WELCOME[] = "mtcs : bienvenu\n";
pgrs_in();
write(sckt, WELCOME, strlen(WELCOME));
pgrs("enregistrement d'une socket");
add_socket(sckt);
while (1) {
pgrs("attente read");
nbc = read(sckt, buf, MAX_BUFFER);
if (nbc <= 0) {
pgrs("fin lecture client");
pgrs("desenregistrement d'une socket");
del_socket(sckt);
close(sckt);
pgrs_out();
return NULL;
}
pgrs("boucle ecriture");
for(i=0; i<MAX_CONNECTION; i++)
if (sockets[i])
write(sockets[i], buf, nbc);
pgrs("fin boucle ecriture");
}
return NULL;
}
int main()
{
RSA *keypair = RSA_generate_key(KEY_LENGTH, PUB_EXP, NULL, NULL);//генерация пары ключей
int listener;
int *sockets=calloc(MAX_CLIENTS,sizeof(int));
pthread_t thread_write[MAX_CLIENTS];
RSA *all_keys[MAX_CLIENTS];
int sock=-1;
try_connect(&listener);
listen(listener,MAX_CLIENTS);
while(1)
{
sock=accept(listener,NULL,NULL);
if(sock<0)
{
perror("Не удалось принять соединение");
return 3;
}
For_server_Thread thread_wr;
thread_wr.sock=sock;
thread_wr.sockets=sockets;
thread_wr.keypair=keypair;
thread_wr.all_keys=all_keys;
int result=add_socket(thread_wr,thread_write);
if(result==-1)
{
perror("Слишком много соединений");
}
}
}
/*
* Opening a UDP socket is a little more tricky, since
* UDP works in a way which is different from TCP...
*
* Our goal is to hide this difference for the end-user
*/
tree_cell * nasl_open_sock_udp(lex_ctxt * lexic)
{
int soc;
tree_cell * retc;
int port;
struct sockaddr_in soca;
struct arglist * script_infos = lexic->script_infos;
struct in_addr * ia;
port = get_int_var_by_num(lexic, 0, -1);
if(port < 0)
return NULL;
ia = plug_get_host_ip(script_infos);
bzero(&soca, sizeof(soca));
soca.sin_addr.s_addr = ia->s_addr;
soca.sin_port = htons(port);
soca.sin_family = AF_INET;
soc = socket(AF_INET, SOCK_DGRAM, 0);
add_socket(script_infos, soc);
set_socket_source_addr(soc, 0);
connect(soc, (struct sockaddr*)&soca, sizeof(soca));
retc = alloc_tree_cell(0, NULL);
retc->type = CONST_INT;
retc->x.i_val = soc < 0 ? 0 : soc;
return retc;
}
static bool add_client(int sock)
{
int i;
if (server.clientnum >= MAX_CLIENTS)
{
fprintf(stderr, "client limit hit\n");
return false;
}
for (i = 0; i < MAX_CLIENTS; i++)
{
Client *c = server.clients + i;
if (c->sock >= 0) continue;
c->sock = sock;
c->good = true;
c->msg = NULL;
c->bufrecved = 0;
c->expect.id = NOBODY;
server.clientnum++;
return add_socket(sock);
}
Assert(false); // should not happen
return false;
}
sock_result_t socket_create_tcp_server(uint16_t port, network_interface_t nif)
{
socket_t* socket = new socket_t();
tcp_server_t* server = new tcp_server_t();
wiced_result_t result = WICED_OUT_OF_HEAP_SPACE;
if (socket && server) {
result = wiced_tcp_server_start(server, wiced_wlan_interface(nif),
port, WICED_MAXIMUM_NUMBER_OF_SERVER_SOCKETS, server_connected, server_received, server_disconnected, NULL);
}
if (result!=WICED_SUCCESS) {
if (socket) {
delete socket;
socket = NULL;
}
if (server) {
server->close();
delete server;
server = NULL;
}
}
else {
socket->set_server(server);
SocketListLock lock(list_for(socket));
add_socket(socket);
}
return socket ? as_sock_result(socket) : as_sock_result(result);
}
static void worker_main(Datum arg)
{
WorkerConfig *cfg = (WorkerConfig *)(arg);
StateP state = (StateP)cfg->getter();
cfg->raft_config.userdata = state;
cfg->raft_config.applier = applier;
cfg->raft_config.snapshooter = snapshooter;
raft = raft_init(&cfg->raft_config);
if (raft == NULL)
elog(ERROR, "couldn't configure raft");
add_peers(cfg);
if (!start_server()) elog(ERROR, "couldn't start raftable server");
signal(SIGINT, die);
signal(SIGQUIT, die);
signal(SIGTERM, die);
sigset_t sset;
sigfillset(&sset);
sigprocmask(SIG_UNBLOCK, &sset, NULL);
server.raftsock = raft_create_udp_socket(raft);
add_socket(server.raftsock);
add_socket(server.listener);
if (server.raftsock == -1) elog(ERROR, "couldn't start raft");
mstimer_t t;
mstimer_reset(&t);
while (!stop)
{
raft_msg_t m = NULL;
int ms = mstimer_reset(&t);
raft_tick(raft, ms);
if (tick(cfg->raft_config.heartbeat_ms))
{
m = raft_recv_message(raft);
Assert(m != NULL);
raft_handle_message(raft, m);
notify();
}
}
}
/*
* Initialize short-message handling.
* Make one or more sockets and set up to listen on them.
* This function is xxx ought-to-be ipv6-agnostic, and is even
* almost UDP/TCP-agnostic.
*/
bool
SMnet::listen_on_port(std::string port)
{
int s;
int gotasocket = 0;
struct addrinfo myhints;
struct addrinfo *myaddrs, *ap;
memset(&myhints, 0, sizeof(myhints));
myhints.ai_family = AF_UNSPEC; // Any address family eg v4/6
myhints.ai_socktype = SOCK_DGRAM; // Datagrams for now FIXME
myhints.ai_flags = AI_PASSIVE; // From anybody
s = getaddrinfo(NULL, (port.c_str()), &myhints, &myaddrs);
if (s != 0) {
cerr << "listen_on_port(" << port
<< ") can't get addr/port to listen on" << endl;
return -1;
}
for (ap = myaddrs; ap != NULL; ap = ap->ai_next) {
int fd, i;
fd = socket(ap->ai_family, ap->ai_socktype, ap->ai_protocol);
if (fd < 0)
continue; // Try another
// Set our port number & address.
i = bind(fd, ap->ai_addr, ap->ai_addrlen);
if (i < 0) {
cerr << "listen_on_port(" << port
<< ") can't bind to addr '"
<< string_addr (ap, true) << "': "
<< strerror(errno) << endl;
close(fd); // Don't leave it dangling
continue; // Try another
}
(void) fcntl(fd, F_SETFL, O_NONBLOCK); // Non-blocking I/O
#ifdef O_CLOEXEC
(void) fcntl(fd, F_SETFD, O_CLOEXEC); // Close on exec child
#endif
// Now set up our class to poll on, and use, this socket.
add_socket (fd, POLLIN|POLLPRI, ap->ai_family,
ap->ai_socktype, ap->ai_protocol, ap->ai_addr,
ap->ai_addrlen);
// Be slightly verbose here.
cerr << "Listening at address '"
<< string_addr (ap, true) << "'." << endl;
gotasocket++;
// And keep looping to make several sockets if we can!
}
freeaddrinfo(myaddrs); // Don't leak memory.
if (!gotasocket)
return false;
return true;
}
static int open_socket(unsigned int domain, unsigned int type, unsigned int protocol)
{
struct object *obj;
struct sockaddr *sa = NULL;
const struct netproto *proto;
socklen_t salen;
struct sockopt so = { 0, 0, 0, 0 };
int fd;
fd = socket(domain, type, protocol);
if (fd == -1)
return fd;
obj = add_socket(fd, domain, type, protocol);
proto = net_protocols[domain].proto;
if (proto != NULL)
if (proto->socket_setup != NULL)
proto->socket_setup(fd);
// FIXME:
// All of this needs to be broken out into child ops instead of
// special casing it all at creation time.
/* Set some random socket options. */
sso_socket(&obj->sockinfo.triplet, &so, fd);
nr_sockets++;
/* Sometimes, listen on created sockets. */
if (RAND_BOOL()) {
int ret, one = 1;
/* fake a sockaddr. */
generate_sockaddr((struct sockaddr **) &sa, (socklen_t *) &salen, domain);
ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
if (ret != -1)
goto skip_bind;
ret = bind(fd, sa, salen);
if (ret != -1)
(void) listen(fd, RAND_RANGE(1, 128));
// ret = accept4(fd, sa, &salen, SOCK_NONBLOCK);
// if (ret != -1) {
// obj = add_socket(ret, domain, type, protocol);
// nr_sockets++;
// }
}
skip_bind:
if (sa != NULL)
free(sa);
return fd;
}
/* Version stupide. Pas de creation de thread,
Le serveur ne peut plus accepter de connexion car il gère
l'interaction avec le premier client.
*/
int
manage_cnct(int fd)
{
pthread_t thread;
int result;
pgrs_in();
result = pthread_create(&thread,NULL,repeater,(void*)fd);
add_socket(fd);
/*repeater(fd); */
pgrs_out();
return result;
}
static void* accept_callback(void *context)
{
int return_value = 0;
sensor_context *sensor = NULL;
peer *client = NULL;
sensor = (sensor_context*)context;
client = (peer*)malloc(sizeof(peer));
if(!client)
{
LOG_DEBUG(("DEBUG: Out of memory\n"));
return (NULL);
}
client->sensor = context;
client->comm_socket_fd = accept(sensor->server_socket_fd, (struct sockaddr*)NULL, NULL);
if(client->comm_socket_fd < 0)
{
LOG_ERROR(("ERROR: Accept call failed\n"));
free(client);
return NULL;
}
sensor->recv_peer[sensor->recv_peer_count] = client;
sensor->recv_peer_count++;
/* add socket to network read thread */
return_value = add_socket(sensor->network_thread, client->comm_socket_fd, (void*)client, &read_callback_peer);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: add_socket() failed\n"));
free(client);
return (NULL);
}
//client->connection_state = 1;
LOG_SCREEN(("INFO: All Peers connected successfully\n"));
if(sensor->send_peer_count == 2 && sensor->recv_peer_count == 2)
{
pthread_create(&sensor->set_value_thread, NULL, &set_value_thread, sensor);
}
return (NULL);
}
int create_gateway(gateway_handle* handle, gateway_create_params *params)
{
gateway_context *gateway = NULL;
int return_value = 0;
gateway = (gateway_context*)malloc(sizeof(gateway_context));
if(NULL == gateway)
{
LOG_ERROR(("ERROR: Out of memory\n"));
return (E_OUT_OF_MEMORY);
}
gateway->client_count = 0;
/* create network read thread */
return_value = create_network_thread(&gateway->network_thread, params->gateway_ip_address);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: Error in creating n/w read thread\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
/* create connection to server */
return_value = create_server_socket(&gateway->server_socket_fd, params->gateway_ip_address, params->gateway_port_no);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: Error in creating the socket\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
/* add socket to network read thread */
return_value = add_socket(gateway->network_thread, gateway->server_socket_fd, (void*)gateway, &accept_callback);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: add_socket() failed\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
*handle = gateway;
return (E_SUCCESS);
}
/**
* Fetch the next waiting client socket from the server
* @param sock
* @return
*/
sock_result_t socket_accept(sock_handle_t sock)
{
sock_result_t result = SOCKET_INVALID;
socket_t* socket = from_handle(sock);
if (is_open(socket) && is_server(socket)) {
std::lock_guard<socket_t> lk(*socket);
tcp_server_t* server = socket->s.tcp_server;
tcp_server_client_t* client = server->next_accept();
if (client) {
socket_t* socket = new socket_t();
socket->set_client(client);
{
SocketListLock lock(list_for(socket));
add_socket(socket);
}
result = (sock_result_t)socket;
}
}
return result;
}
int socket_callback(CURL* _easy_handle, curl_socket_t _socket, int _what, void* _curl_handler_ptr, void* _connection_ptr)
{
const auto handler = static_cast<curl_handler*>(_curl_handler_ptr);
const auto connection = static_cast<curl_handler::connection_context*>(_connection_ptr);
if (_what == CURL_POLL_REMOVE)
{
connection->free_event();
}
else if (connection == NULL)
{
add_socket(_socket, _easy_handle, _what, handler);
}
else
{
connection->update(_socket, _what);
}
return 0;
}
int main(int argc, char** argv)
{
struct configuration cfg;
int sock;
unsigned int pkt_num = 0;
parse_options(argc, argv, &cfg);
/* Initialise */
sock = add_socket(&cfg);
do_mcast(&cfg, sock);
do_ioctl(&cfg, sock);
do_ts_sockopt(&cfg, sock);
/* Run until we've got enough packets, or an error occurs */
while( (pkt_num++ < cfg.cfg_max_packets) || (cfg.cfg_max_packets == 0) )
TRY( do_echo(sock, pkt_num, cfg.cfg_templated) );
close(sock);
return 0;
}
void* accept_callback(void *context)
{
int return_value = 0;
gateway_context *gateway = NULL;
gateway_client *client = NULL;
gateway = (gateway_context*)context;
client = (gateway_client*)malloc(sizeof(gateway_client));
if(!client)
{
LOG_DEBUG(("DEBUG: Out of memory\n"));
return (NULL);
}
client->gateway = context;
client->comm_socket_fd = accept(gateway->server_socket_fd, (struct sockaddr*)NULL, NULL);
if(client->comm_socket_fd < 0)
{
LOG_ERROR(("ERROR: Accept call failed\n"));
free(client);
return NULL;
}
gateway->clients[gateway->client_count] = client;
gateway->client_count++;
/* add socket to network read thread */
return_value = add_socket(gateway->network_thread, client->comm_socket_fd, (void*)client, &read_callback);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: add_socket() failed\n"));
free(client);
return (NULL);
}
client->connection_state = 1;
return (NULL);
}
void select_s(t_server *s_info, fd_set *rfd, struct timeval *time)
{
int i;
int tmp;
int al;
struct sockaddr_in addr;
char buffer[BUFFER_SIZE + 1];
int res;
res = select(FD_SETSIZE, rfd, NULL, NULL, time);
al = sizeof(addr);
if (socket_com_size() <= MAX_CLIENTS && FD_ISSET(socket_s, rfd)) {
if ((tmp =
accept(socket_s, (struct sockaddr *)&addr, (socklen_t *)&al)) == -1) {
dprintf(1, "accept error\n");
exit (0);
}
add_socket(tmp, &addr, s_info);
}
i = 0;
recv_perso(rfd, s_info);
}
static PyObject*
PyEvents_CreateSocket(PyObject* unused, PyObject* args)
{
SocketObject* socket;
int fd; /* Handle of stream to watch. */
int mask; /* OR'ed combination of PyEvents_READABLE,
* PyEvents_WRITABLE, and PyEvents_EXCEPTION:
* indicates conditions under which proc
* should be called. */
PyObject* callback; /* Callback function */
if (!PyArg_ParseTuple(args, "iiO", &fd, &mask, &callback)) return NULL;
if (!PyCallable_Check(callback)) {
PyErr_SetString(PyExc_TypeError, "Callback should be callable");
return NULL;
}
Py_INCREF(callback);
socket = (SocketObject*)PyType_GenericNew(&SocketType, NULL, NULL);
socket->callback = callback;
socket->fd = fd;
socket->mask = mask;
add_socket(socket);
return (PyObject*)socket;
}
static bool start_server(void)
{
int i;
server.listener = -1;
server.raftsock = -1;
FD_ZERO(&server.all);
server.maxfd = 0;
server.clientnum = 0;
server.listener = create_listening_socket(server.host, server.port);
if (server.listener == -1)
{
return false;
}
for (i = 0; i < MAX_CLIENTS; i++)
{
server.clients[i].sock = -1;
}
return add_socket(server.listener);
}
void runserver(int numthreads, unsigned short serverport) {
//////////////////////////////////////////////////
// create your pool of threads here
//////////////////////////////////////////////////
//Initialize socket queue
socket_pool_t *mysockets = malloc(sizeof(socket_pool_t));
socket_pool_init(mysockets);
struct thread_args *myargs = malloc(sizeof(struct thread_args));
myargs->sockets = mysockets;
//myargs->weblog = fopen(NULL,"weblog.txt");
pthread_t threadpool[numthreads];
int i=0;
//for loop to initialize threads in threadpool
for (; i<numthreads; i++){
if (0 > pthread_create(&threadpool[i], NULL, (void *)consumer, myargs)){
fprintf(stderr, "Error creating thread: %s\n", strerror(errno));
}
}
int main_socket = prepare_server_socket(serverport);
if (main_socket < 0) {
exit(-1);
}
signal(SIGINT, signal_handler);
struct sockaddr_in client_address;
socklen_t addr_len;
fprintf(stderr, "Server listening on port %d. Going into request loop.\n", serverport);
while (still_running) {
struct pollfd pfd = {main_socket, POLLIN};
int prv = poll(&pfd, 1, 10000);
if (prv == 0) {
continue;
} else if (prv < 0) {
PRINT_ERROR("poll");
still_running = FALSE;
continue;
}
addr_len = sizeof(client_address);
memset(&client_address, 0, addr_len);
int new_sock = accept(main_socket, (struct sockaddr *)&client_address, &addr_len);
if (new_sock > 0) {
fprintf(stderr, "Got connection from %s:%d\n", inet_ntoa(client_address.sin_addr), ntohs(client_address.sin_port));
////////////////////////////////////////////////////////
/* You got a new connection. Hand the connection off
* to one of the threads in the pool to process the
* request.
*
* Don't forget to close the socket (in the worker thread)
* when you're done.
*/
////////////////////////////////////////////////////////
pthread_mutex_lock(&mysockets->socket_pool_lock);
add_socket(mysockets, new_sock);
pthread_mutex_unlock(&mysockets->socket_pool_lock);
get_new_socket(mysockets);
close(new_sock);
}
}
fprintf(stderr, "Server shutting down.\n");
close(main_socket);
}
static tree_cell * nasl_open_privileged_socket(lex_ctxt * lexic, int proto)
{
struct arglist * script_infos = lexic->script_infos;
int sport, current_sport = -1;
int dport;
int sock;
int e, err;
struct sockaddr_in addr, daddr;
struct in_addr * p;
int to = get_int_local_var_by_name(lexic, "timeout", lexic->recv_timeout);
tree_cell * retc;
struct timeval tv;
fd_set rd;
int opt, opt_sz;
sport = get_int_local_var_by_name(lexic, "sport", -1);
dport = get_int_local_var_by_name(lexic, "dport", -1);
if(dport <= 0)
{
nasl_perror(lexic, "open_private_socket: missing or undefined parameter dport!\n");
return NULL;
}
if(sport < 0) current_sport = 1023;
restart:
bzero(&addr, sizeof(addr));
if(proto == IPPROTO_TCP)
sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
else
sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
/*
* We will bind to a privileged port. Let's declare
* our socket ready for reuse
*/
if(sock < 0)
return NULL;
add_socket(script_infos, sock);
tryagain :
if ( current_sport < 128 ) return NULL;
e = set_socket_source_addr(sock, sport > 0 ? sport : current_sport--);
/*
* bind() failed - try again on a lower port
*/
if(e < 0)
{
closesocket ( sock );
if(sport > 0)
return NULL;
else
goto tryagain;
}
/*
* Connect to the other end
*/
p = plug_get_host_ip(script_infos);
bzero(&daddr, sizeof(daddr));
daddr.sin_addr = *p;
daddr.sin_port = htons(dport);
daddr.sin_family = AF_INET;
unblock_socket(sock);
e = connect(sock, (struct sockaddr*)&daddr, sizeof(daddr));
if ( e < 0 )
{
err = WSAGetLastError();
if ( err == WSAEADDRINUSE || err == WSAEADDRNOTAVAIL )
{
closesocket(sock);
if ( sport < 0 )
goto restart;
else
return NULL;
}
}
do {
tv.tv_sec = to;
tv.tv_usec = 0;
FD_ZERO(&rd);
FD_SET(sock, &rd);
e = select(sock + 1, NULL, &rd, NULL, to > 0 ? &tv:NULL);
err = WSAGetLastError();
} while ( e < 0 && err == WSAEINTR );
block_socket(sock);
opt_sz = sizeof(opt);
if ( getsockopt(sock, SOL_SOCKET, SO_ERROR, &opt, &opt_sz) < 0 )
{
fprintf(stderr, "[%d] open_priv_sock()->getsockopt() failed : %s\n", getpid(), strerror(errno));
closesocket(sock);
return NULL;
}
switch ( opt )
{
case WSAEADDRINUSE:
case WSAEADDRNOTAVAIL:
closesocket ( sock );
if ( sport < 0 )
goto restart;
else
return FAKE_CELL;
case 0:
break;
default:
closesocket ( sock );
return FAKE_CELL;
break;
}
if(proto == IPPROTO_TCP)
sock = nessus_register_connection(sock, NULL);
retc = alloc_tree_cell(0, NULL);
retc->type = CONST_INT;
retc->x.i_val = sock < 0 ? 0 : sock;
return retc;
}
static int call0 (FTN_NODE *node, BINKD_CONFIG *config)
{
int sockfd = INVALID_SOCKET;
int sock_out;
char szDestAddr[FTN_ADDR_SZ + 1];
int i, rc, pid = -1;
char host[BINKD_FQDNLEN + 5 + 1]; /* current host/port */
char addrbuf[BINKD_FQDNLEN + 1];
char servbuf[MAXSERVNAME + 1];
char *hosts;
char *port;
char *dst_host = host;
const char *save_err;
#ifdef HTTPS
int use_proxy;
char *proxy, *socks;
struct addrinfo *aiProxyHead;
#endif
struct addrinfo *ai, *aiNodeHead, *aiHead, hints;
int aiErr;
/* setup hints for getaddrinfo */
memset((void *)&hints, 0, sizeof(hints));
hints.ai_family = node->IP_afamily;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
#ifdef WITH_PERL
hosts = xstrdup(node->hosts);
#ifdef HTTPS
proxy = xstrdup(config->proxy);
socks = xstrdup(config->socks);
#endif
if (!perl_on_call(node, config, &hosts
#ifdef HTTPS
, &proxy, &socks
#endif
)) {
Log(1, "call aborted by Perl on_call()");
return 0;
}
#else
hosts = node->hosts;
#ifdef HTTPS
proxy = config->proxy;
socks = config->socks;
#endif
#endif
ftnaddress_to_str (szDestAddr, &node->fa);
Log (2, "call to %s", szDestAddr);
setproctitle ("call to %s", szDestAddr);
#ifdef HTTPS
use_proxy = (node->NP_flag != NP_ON) && (!node->pipe || !node->pipe[0]) && (proxy[0] || socks[0]);
if (use_proxy)
{
char *sp, *sport;
strncpy(host, proxy[0] ? proxy : socks, sizeof(host));
if ((sp=strchr(host, ':')) != NULL)
{
*sp++ = '\0';
sport = sp;
if ((sp=strchr(sp, '/')) != NULL)
*sp++ = '\0';
}
else
{
if ((sp=strchr(host, '/')) != NULL)
*sp++ = '\0';
sport = proxy[0] ? "squid" : "socks"; /* default port */
}
/* resolve proxy host */
if ( (aiErr = srv_getaddrinfo(host, sport, &hints, &aiProxyHead)) != 0)
{
Log(2, "Port %s not found, try default %d", sp, proxy[0] ? 3128 : 1080);
aiErr = getaddrinfo(host, proxy[0] ? "3128" : "1080", &hints, &aiProxyHead);
}
if (aiErr != 0)
{
Log(1, "%s host %s not found", proxy[0] ? "Proxy" : "Socks", host);
#ifdef WITH_PERL
xfree(hosts);
#ifdef HTTPS
xfree(proxy);
xfree(socks);
#endif
#endif
return 0;
}
}
#endif
for (i = 1; sockfd == INVALID_SOCKET
&& (rc = get_host_and_port
(i, host, &port, hosts, &node->fa, config)) != -1; ++i)
{
if (rc == 0)
{
Log (1, "%s: %i: error parsing host list", hosts, i);
continue;
}
pid = -1;
if (node->pipe && node->pipe[0])
{
char *cmdline = strdup(node->pipe);
cmdline = ed(cmdline, "*H", host, NULL);
cmdline = ed(cmdline, "*I", port, NULL);
pid = run3(cmdline, &sock_out, &sockfd, NULL);
free(cmdline);
if (pid != -1)
{
Log (4, "connected");
add_socket(sock_out);
break;
}
if (!binkd_exit)
{
Log (1, "connection to %s failed");
/* bad_try (&node->fa, "exec error", BAD_CALL, config); */
}
sockfd = INVALID_SOCKET;
continue;
}
#ifdef HTTPS
if (use_proxy)
aiHead = aiProxyHead;
else /* don't resolve if proxy or socks specified */
#endif
{
aiErr = srv_getaddrinfo(host, port, &hints, &aiNodeHead);
if (aiErr != 0)
{
bad_try(&node->fa, "Cannot getaddrinfo", BAD_CALL, config);
continue;
}
aiHead = aiNodeHead;
}
/* Trying... */
for (ai = aiHead; ai != NULL && sockfd == INVALID_SOCKET; ai = ai->ai_next)
{
if ((sockfd = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol)) == INVALID_SOCKET)
{
Log (1, "socket: %s", TCPERR ());
/* as long as there are more addresses, try those */
if (ai != NULL)
continue;
else
{
#ifdef WITH_PERL
xfree(hosts);
#ifdef HTTPS
xfree(proxy);
xfree(socks);
#endif
#endif
freeaddrinfo(aiHead);
return 0;
}
}
add_socket(sockfd);
/* Was the socket created after close_sockets loop in exitfunc()? */
if (binkd_exit)
{
#ifdef WITH_PERL
xfree(hosts);
#ifdef HTTPS
xfree(proxy);
xfree(socks);
#endif
#endif
freeaddrinfo(aiHead);
return 0;
}
rc = getnameinfo(ai->ai_addr, ai->ai_addrlen, addrbuf, sizeof(addrbuf),
servbuf, sizeof(servbuf), NI_NUMERICHOST | NI_NUMERICSERV);
if (rc != 0) {
Log (2, "Error in getnameinfo(): %s (%d)", gai_strerror(rc), rc);
snprintf(addrbuf, BINKD_FQDNLEN, "invalid");
*servbuf = '\0';
}
#ifdef HTTPS
if (use_proxy)
{
char *sp = strchr(host, ':');
if (sp) *sp = '\0';
if (port == config->oport)
Log (4, "trying %s via %s %s:%s...", host,
proxy[0] ? "proxy" : "socks", addrbuf, servbuf);
else
Log (4, "trying %s:%s via %s %s:%s...", host, port,
proxy[0] ? "proxy" : "socks", addrbuf, servbuf);
sprintf(host+strlen(host), ":%s", port);
}
else
#endif
{
if (port == config->oport)
Log (4, "trying %s [%s]...", host, addrbuf);
else
Log (4, "trying %s [%s]:%s...", host, addrbuf, servbuf);
}
/* find bind addr with matching address family */
if (config->bindaddr[0])
{
struct addrinfo *src_ai, src_hints;
memset((void *)&src_hints, 0, sizeof(src_hints));
src_hints.ai_socktype = SOCK_STREAM;
src_hints.ai_family = ai->ai_family;
src_hints.ai_protocol = IPPROTO_TCP;
if ((aiErr = getaddrinfo(config->bindaddr, NULL, &src_hints, &src_ai)) == 0)
{
if (bind(sockfd, src_ai->ai_addr, src_ai->ai_addrlen))
Log(4, "bind: %s", TCPERR());
freeaddrinfo(src_ai);
}
else
if (aiErr == EAI_FAMILY)
/* address family of target and bind address don't match */
continue;
else
/* otherwise just warn and don't bind() */
Log(2, "bind -- getaddrinfo: %s (%d)", gai_strerror(aiErr), aiErr);
}
#ifdef HAVE_FORK
if (config->connect_timeout)
{
signal(SIGALRM, alrm);
alarm(config->connect_timeout);
}
#endif
if (connect (sockfd, ai->ai_addr, ai->ai_addrlen) == 0)
{
#ifdef HAVE_FORK
alarm(0);
#endif
Log (4, "connected");
sock_out = sockfd;
dst_host = addrbuf;
break;
}
#ifdef HAVE_FORK
if (errno == EINTR && config->connect_timeout)
save_err = strerror (ETIMEDOUT);
else
save_err = TCPERR ();
alarm(0);
#else
save_err = TCPERR ();
#endif
if (!binkd_exit)
{
Log (1, "connection to %s failed: %s", szDestAddr, save_err);
bad_try (&node->fa, save_err, BAD_CALL, config);
}
del_socket(sockfd);
soclose (sockfd);
sockfd = INVALID_SOCKET;
}
#ifdef HTTPS
if (!use_proxy)
#endif
freeaddrinfo(aiNodeHead);
#ifdef HTTPS
if (sockfd != INVALID_SOCKET && use_proxy) {
if (h_connect(sockfd, host, config, proxy, socks) != 0) {
if (!binkd_exit)
bad_try (&node->fa, TCPERR (), BAD_CALL, config);
del_socket(sockfd);
soclose (sockfd);
sockfd = INVALID_SOCKET;
}
else if (port == config->oport) {
char *pp;
if( (pp = strchr(host, ':')) ){
*pp = '\0';
}
}
}
#endif
}
#ifdef HTTPS
if (use_proxy)
freeaddrinfo(aiProxyHead);
#endif
#ifdef WITH_PERL
xfree(hosts);
#ifdef HTTPS
xfree(proxy);
xfree(socks);
#endif
#endif
if (sockfd == INVALID_SOCKET)
return 0;
protocol (sockfd, sock_out, node, NULL, dst_host, config);
if (pid != -1)
{
del_socket(sock_out);
close(sock_out);
#ifdef HAVE_WAITPID
if (waitpid (pid, &rc, 0) == -1)
{
Log (1, "waitpid(%u) error: %s", pid, strerror(errno));
}
else
{
if (WIFSIGNALED(rc))
Log (2, "process %u exited by signal %u", pid, WTERMSIG(rc));
else
Log (4, "rc(%u)=%u", pid, WEXITSTATUS(rc));
}
#endif
close(sockfd);
}
else
{
del_socket(sockfd);
soclose (sockfd);
}
return 1;
}
void IO::OutputScheduler::ScheduleWrite(const IO::Socket& sock,
const std::string& data) {
Log::i("scheduling write on fd = " + std::to_string(sock.get_fd()));
volatile std::lock_guard<std::mutex> schedule_lock(_scheduling_mutex);
add_socket(sock, data);
}
int create_gateway(gateway_handle* handle, gateway_create_params *params)
{
gateway_context *gateway = NULL;
int return_value = 0;
gateway = (gateway_context*)malloc(sizeof(gateway_context));
if(NULL == gateway)
{
LOG_ERROR(("ERROR: Out of memory\n"));
return (E_OUT_OF_MEMORY);
}
memset(gateway, 0, sizeof(gateway_context));
gateway->client_count = 0;
gateway->storage_file_pointer = fopen(params->storage_file_name, "w");
if(!gateway->storage_file_pointer)
{
LOG_ERROR(("ERROR: Unable to open persistent storage file\n"));
delete_gateway((gateway_handle)gateway);
return E_FAILURE;
}
/* create network read thread */
return_value = create_network_thread(&gateway->network_thread, params->gateway_ip_address);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: Error in creating n/w read thread\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
/* create connection to server */
return_value = create_socket(&gateway->server_socket_fd, params->gateway_ip_address, params->gateway_port_no);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: Error in creating the socket\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
/* add socket to network read thread */
return_value = add_socket(gateway->network_thread, gateway->server_socket_fd, (void*)gateway, &read_callback);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: add_socket() failed\n"));
delete_gateway((gateway_handle)gateway);
return (return_value);
}
message msg;
/* register device with gateway */
msg.type = REGISTER;
msg.u.s.type = BACK_TIER_GATEWAY;
msg.u.s.ip_address = params->gateway_ip_address;
msg.u.s.port_no = params->gateway_port_no;
msg.u.s.area_id = "0";
return_value = write_message(gateway->server_socket_fd, gateway->logical_clock, &msg);
if(E_SUCCESS != return_value)
{
LOG_ERROR(("ERROR: Error in registering device\n"));
return (E_FAILURE);
}
*handle = gateway;
return (E_SUCCESS);
}
/*
open the ldap server sockets
*/
static void ldapsrv_task_init(struct task_server *task)
{
char *ldapi_path;
#ifdef WITH_LDAPI_PRIV_SOCKET
char *priv_dir;
#endif
struct ldapsrv_service *ldap_service;
NTSTATUS status;
const struct model_ops *model_ops;
switch (lp_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
task_server_terminate(task, "ldap_server: no LDAP server required in standalone configuration",
false);
return;
case ROLE_DOMAIN_MEMBER:
task_server_terminate(task, "ldap_server: no LDAP server required in member server configuration",
false);
return;
case ROLE_DOMAIN_CONTROLLER:
/* Yes, we want an LDAP server */
break;
}
task_server_set_title(task, "task[ldapsrv]");
/* run the ldap server as a single process */
model_ops = process_model_startup(task->event_ctx, "single");
if (!model_ops) goto failed;
ldap_service = talloc_zero(task, struct ldapsrv_service);
if (ldap_service == NULL) goto failed;
ldap_service->task = task;
ldap_service->tls_params = tls_initialise(ldap_service, task->lp_ctx);
if (ldap_service->tls_params == NULL) goto failed;
if (lp_interfaces(task->lp_ctx) && lp_bind_interfaces_only(task->lp_ctx)) {
struct interface *ifaces;
int num_interfaces;
int i;
load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
num_interfaces = iface_count(ifaces);
/* We have been given an interfaces line, and been
told to only bind to those interfaces. Create a
socket per interface and bind to only these.
*/
for(i = 0; i < num_interfaces; i++) {
const char *address = iface_n_ip(ifaces, i);
status = add_socket(task->event_ctx, task->lp_ctx, model_ops, address, ldap_service);
if (!NT_STATUS_IS_OK(status)) goto failed;
}
} else {
status = add_socket(task->event_ctx, task->lp_ctx, model_ops,
lp_socket_address(task->lp_ctx), ldap_service);
if (!NT_STATUS_IS_OK(status)) goto failed;
}
ldapi_path = private_path(ldap_service, task->lp_ctx, "ldapi");
if (!ldapi_path) {
goto failed;
}
status = stream_setup_socket(task->event_ctx, task->lp_ctx,
model_ops, &ldap_stream_nonpriv_ops,
"unix", ldapi_path, NULL,
lp_socket_options(task->lp_ctx),
ldap_service);
talloc_free(ldapi_path);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("ldapsrv failed to bind to %s - %s\n",
ldapi_path, nt_errstr(status)));
}
#ifdef WITH_LDAPI_PRIV_SOCKET
priv_dir = private_path(ldap_service, task->lp_ctx, "ldap_priv");
if (priv_dir == NULL) {
goto failed;
}
/*
* Make sure the directory for the privileged ldapi socket exists, and
* is of the correct permissions
*/
if (!directory_create_or_exist(priv_dir, geteuid(), 0750)) {
task_server_terminate(task, "Cannot create ldap "
"privileged ldapi directory", true);
return;
}
ldapi_path = talloc_asprintf(ldap_service, "%s/ldapi", priv_dir);
talloc_free(priv_dir);
if (ldapi_path == NULL) {
goto failed;
}
status = stream_setup_socket(task->event_ctx, task->lp_ctx,
model_ops, &ldap_stream_priv_ops,
"unix", ldapi_path, NULL,
lp_socket_options(task->lp_ctx),
ldap_service);
talloc_free(ldapi_path);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("ldapsrv failed to bind to %s - %s\n",
ldapi_path, nt_errstr(status)));
}
#endif
return;
failed:
task_server_terminate(task, "Failed to startup ldap server task", true);
}
