1 /* ClientSocket.c - NeonServ v5.3
2 * Copyright (C) 2011-2012 Philipp Kreil (pk910)
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "ClientSocket.h"
19 #include "IRCParser.h"
22 #include "WHOHandler.h"
23 #include "HandleInfoHandler.h"
25 #include "ConfigParser.h"
29 struct ClientSocket *data;
34 static pthread_mutex_t synchronized;
35 static pthread_mutex_t synchronized_recv;
39 static struct socket_list *sockets = NULL;
40 static char buffer[BUF_SIZ];
43 THREAD_MUTEX_INIT(synchronized);
44 THREAD_MUTEX_INIT(synchronized_recv);
46 sockets = malloc(sizeof(*sockets));
49 perror("malloc() failed");
56 struct ClientSocket* create_socket(char *host, int port, char *bindto, char *pass, char *nick, char *ident, char *realname) {
57 struct ClientSocket *client = malloc(sizeof(*client));
60 perror("malloc() failed");
63 client->host = strdup(host);
65 client->bind = (bindto ? strdup(bindto) : NULL);
66 client->pass = (pass == NULL ? NULL : strdup(pass));
67 client->nick = strdup(nick);
68 client->ident = strdup(ident);
69 client->realname = strdup(realname);
72 client->bufferpos = 0;
73 client->traffic_in = 0;
74 client->traffic_out = 0;
75 client->connection_time = 0;
79 client->whoqueue_first = NULL;
80 client->whoqueue_last = NULL;
81 client->handleinfo_first = NULL;
82 client->handleinfo_last = NULL;
83 SYNCHRONIZE(synchronized);
84 client->next = sockets->data;
85 sockets->data = client;
86 DESYNCHRONIZE(synchronized);
90 static int _connect_socket(struct ClientSocket *client);
92 int connect_socket(struct ClientSocket *client) {
93 SYNCHRONIZE(synchronized);
94 int ret = _connect_socket(client);
95 DESYNCHRONIZE(synchronized);
100 static int _connect_socket(struct ClientSocket *client) {
101 if((client->flags & SOCKET_FLAG_CONNECTED)) return 1;
104 struct addrinfo hints, *res;
105 struct sockaddr_in *ip4 = NULL;
106 struct sockaddr_in6 *ip6 = NULL;
107 memset (&hints, 0, sizeof (hints));
108 hints.ai_family = PF_UNSPEC;
109 hints.ai_socktype = SOCK_STREAM;
110 hints.ai_flags |= AI_CANONNAME;
111 if (getaddrinfo (client->host, NULL, &hints, &res)) {
115 switch (res->ai_family) {
117 ip4 = (struct sockaddr_in *) res->ai_addr;
120 ip6 = (struct sockaddr_in6 *) res->ai_addr;
127 sock = socket(AF_INET6, SOCK_STREAM, 0);
129 perror("socket() failed");
133 ip6->sin6_family = AF_INET6;
134 ip6->sin6_port = htons(client->port);
136 struct sockaddr_in6 *ip6vhost = NULL;
137 if (client->bind && !getaddrinfo(client->bind, NULL, &hints, &res)) {
139 switch (res->ai_family) {
141 ip6vhost = (struct sockaddr_in6 *) res->ai_addr;
148 ip6vhost->sin6_family = AF_INET6;
149 ip6vhost->sin6_port = htons(0);
150 bind(sock, (struct sockaddr*)ip6vhost, sizeof(*ip6vhost));
153 if (connect(sock, (struct sockaddr*)ip6, sizeof(*ip6)) == -1) {
154 perror("connect() failed");
159 sock = socket(AF_INET, SOCK_STREAM, 0);
161 perror("socket() failed");
165 ip4->sin_family = AF_INET;
166 ip4->sin_port = htons(client->port);
168 struct sockaddr_in *ip4vhost = NULL;
169 if (client->bind && !getaddrinfo(client->bind, NULL, &hints, &res)) {
171 switch (res->ai_family) {
173 ip4vhost = (struct sockaddr_in *) res->ai_addr;
180 ip4vhost->sin_family = AF_INET;
181 ip4vhost->sin_port = htons(0);
182 bind(sock, (struct sockaddr*)ip4vhost, sizeof(*ip4vhost));
185 if (connect(sock, (struct sockaddr*)ip4, sizeof(*ip4)) == -1) {
186 perror("connect() failed");
193 if(get_int_field("Sockets.NoDelay")) {
195 if(setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) == -1) {
196 perror("setsockopt() failed");
202 client->flags |= SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT;
203 client->connection_time = time(0);
205 if(client->flags & SOCKET_FLAG_SSL) {
207 client->flags |= SOCKET_FLAG_HAVE_SSL;
209 client->flags &= ~SOCKET_FLAG_HAVE_SSL;
211 //send the IRC Headers
215 if(client->pass && strcmp(client->pass, "")) {
216 len = sprintf(sendBuf, "PASS :%s\n", client->pass);
217 write_socket(client, sendBuf, len);
219 len = sprintf(sendBuf, "USER %s 0 0 :%s\n", client->ident, client->realname);
220 write_socket(client, sendBuf, len);
221 len = sprintf(sendBuf, "NICK %s\n", client->nick);
222 write_socket(client, sendBuf, len);
227 static int connect_socket(struct ClientSocket *client) {
228 if((client->flags & SOCKET_FLAG_CONNECTED)) return 1;
229 struct hostent *host;
230 struct sockaddr_in addr;
232 addr.sin_addr.s_addr = inet_addr(client->host);
233 if (addr.sin_addr.s_addr == INADDR_NONE) {
234 host = gethostbyname(client->host);
238 memcpy(&(addr.sin_addr), host->h_addr_list[0], 4);
240 sock = socket(PF_INET, SOCK_STREAM, 0);
243 perror("socket() failed");
247 addr.sin_port = htons(client->port);
248 addr.sin_family = AF_INET;
250 if (connect(sock, (struct sockaddr*)&addr, sizeof(addr)) == -1)
252 perror("connect() failed");
257 client->flags |= SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT;
258 client->connection_time = time(0);
261 if(client->flags & SOCKET_FLAG_SSL) {
263 client->flags |= SOCKET_FLAG_HAVE_SSL;
265 client->flags &= ~SOCKET_FLAG_HAVE_SSL;
267 //send the IRC Headers
271 if(client->pass && strcmp(client->pass, "")) {
272 len = sprintf(sendBuf, "PASS :%s\n", client->pass);
273 write_socket(client, sendBuf, len);
275 len = sprintf(sendBuf, "USER %s 0 0 :%s\n", client->ident, client->realname);
276 write_socket(client, sendBuf, len);
277 len = sprintf(sendBuf, "NICK %s\n", client->nick);
278 write_socket(client, sendBuf, len);
284 int close_socket(struct ClientSocket *client) {
285 if(client == NULL) return 0;
286 if((client->flags & SOCKET_FLAG_CONNECTED)) {
287 char quitbuf[MAXLEN];
288 int quitlen = sprintf(quitbuf, "QUIT :[NeonServ %s.%d] disconnect requested.\n", NEONSERV_VERSION, patchlevel);
289 write_socket_force(client, quitbuf, quitlen);
291 client->flags &= ~(SOCKET_FLAG_READY | SOCKET_FLAG_RECONNECT);
292 client->flags |= SOCKET_FLAG_QUITTED | SOCKET_FLAG_DEAD;
296 int disconnect_socket(struct ClientSocket *client) {
297 if(client == NULL) return 0;
298 if((client->flags & SOCKET_FLAG_CONNECTED)) {
299 char quitbuf[MAXLEN];
300 int quitlen = sprintf(quitbuf, "QUIT :[NeonServ %s.%d] disconnect requested.\n", NEONSERV_VERSION, patchlevel);
301 write_socket_force(client, quitbuf, quitlen);
303 client->flags &= ~(SOCKET_FLAG_READY | SOCKET_FLAG_RECONNECT);
304 client->flags |= SOCKET_FLAG_QUITTED;
308 static void destroy_socket(struct ClientSocket *client, int free_socket) {
309 SYNCHRONIZE(synchronized);
310 if((client->flags & SOCKET_FLAG_CONNECTED)) {
312 bot_disconnect(client);
314 if(client->flags & SOCKET_FLAG_HAVE_SSL)
315 ssl_disconnect(client);
317 queue_destroy(client);
318 if(client->whoqueue_first)
319 clear_whoqueue(client);
320 if(client->handleinfo_first)
321 clear_handleinfoqueue(client);
322 client->flags &= ~(SOCKET_FLAG_CONNECTED | SOCKET_FLAG_READY | SOCKET_FLAG_HAVE_SSL);
324 struct ClientSocket *sock, *last_sock = NULL;
325 for (sock = sockets->data; sock; sock = sock->next) {
328 last_sock->next = sock->next;
330 sockets->data = sock->next;
342 } else if(client->flags & SOCKET_FLAG_FAST_JUMP) {
343 client->flags &= ~SOCKET_FLAG_FAST_JUMP;
344 connect_socket(client);
346 DESYNCHRONIZE(synchronized);
349 int write_socket_force(struct ClientSocket *client, char* msg, int len) {
350 SYNCHRONIZE(synchronized);
351 printf("[send %d] %s", len, msg);
352 if(!(client->flags & SOCKET_FLAG_HAVE_SSL) || ssl_write(client, msg, len) == -2) {
354 send(client->sock, msg, len, 0);
356 write(client->sock, msg, len);
359 client->traffic_out += len;
360 DESYNCHRONIZE(synchronized);
364 int write_socket(struct ClientSocket *client, char* msg, int len) {
365 if(!(client && (client->flags & SOCKET_FLAG_CONNECTED))) return 0;
366 if(client->flags & SOCKET_FLAG_USE_QUEUE)
367 return queue_add(client, msg, len);
369 return write_socket_force(client, msg, len);
372 void socket_loop(int timeout_seconds) {
373 if(sockets == NULL) return;
374 int is_synchronized = 1;
375 SYNCHRONIZE(synchronized_recv);
377 struct timeval timeout;
378 struct ClientSocket *sock, *next;
379 int ret = 0, bytes, i;
382 for (sock = sockets->data; sock; sock = sock->next) {
383 if(!(sock->flags & SOCKET_FLAG_CONNECTED)) continue; //skip disconnected sockets
384 FD_SET(sock->sock, &fds);
388 timeout.tv_sec = timeout_seconds;
390 ret = select(ret + 1, &fds, NULL, NULL, &timeout);
392 DESYNCHRONIZE(synchronized_recv);
395 for (sock = sockets->data; sock; sock = next) {
397 if((sock->flags & (SOCKET_FLAG_CONNECTED | SOCKET_FLAG_QUITTED)) == SOCKET_FLAG_CONNECTED && FD_ISSET(sock->sock, &fds)) {
398 if(sock->bufferpos != 0) {
399 if(!(sock->flags & SOCKET_FLAG_HAVE_SSL) || (bytes = ssl_read(sock, buffer, sizeof(buffer))) == -2) {
401 bytes = recv(sock->sock, buffer, sizeof(buffer), 0);
403 bytes = read(sock->sock, buffer, sizeof(buffer));
407 for(i = 0; i < bytes; i++) {
408 if(sock->bufferpos + i == BUF_SIZ*2) break; //buffer overflow
409 sock->buffer[sock->bufferpos + i] = buffer[i];
411 sock->bufferpos += i;
414 if(!(sock->flags & SOCKET_FLAG_HAVE_SSL) || (bytes = ssl_read(sock, sock->buffer, sizeof(sock->buffer))) == -2) {
416 bytes = recv(sock->sock, sock->buffer, sizeof(sock->buffer), 0);
418 bytes = read(sock->sock, sock->buffer, sizeof(sock->buffer));
422 sock->bufferpos = bytes;
426 sock->flags |= SOCKET_FLAG_QUITTED;
428 sock->traffic_in += bytes;
430 char linesbuf[BUF_SIZ*2];
431 strcpy(linesbuf, sock->buffer);
433 for(i = 0; i < sock->bufferpos; i++) {
434 if(sock->buffer[i] == '\n') {
438 if(used == sock->bufferpos + 1) {
439 //used all bytes so just reset the bufferpos
442 for(i = 0; i < sock->bufferpos - used; i++) {
443 sock->buffer[i] = sock->buffer[i+used];
445 sock->bufferpos -= used;
448 DESYNCHRONIZE(synchronized_recv);
449 parse_lines(sock, linesbuf, used);
451 int used = parse_lines(sock, sock->buffer, sock->bufferpos);
452 if(used == sock->bufferpos + 1) {
453 //used all bytes so just reset the bufferpos
456 for(i = 0; i < sock->bufferpos - used; i++) {
457 sock->buffer[i] = sock->buffer[i+used];
459 sock->bufferpos -= used;
462 DESYNCHRONIZE(synchronized_recv);
465 FD_ZERO(&fds); //zero out all other pending sockets here (we have other threads receiving from them)
468 } else if((sock->flags & (SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT)) == SOCKET_FLAG_RECONNECT) {
469 if(time(0) - sock->connection_time >= SOCKET_RECONNECT_TIME) {
470 connect_socket(sock);
473 if((sock->flags & SOCKET_FLAG_QUITTED)) {
474 sock->flags &= ~SOCKET_FLAG_QUITTED;
475 destroy_socket(sock, (sock->flags & SOCKET_FLAG_DEAD));
478 if(is_synchronized) {
479 DESYNCHRONIZE(synchronized_recv);
484 putsock(struct ClientSocket *client, const char *text, ...)
487 char sendBuf[MAXLEN];
489 if (!(client && (client->flags & SOCKET_FLAG_CONNECTED))) return;
491 va_start(arg_list, text);
492 pos = vsnprintf(sendBuf, MAXLEN - 2, text, arg_list);
494 if (pos < 0 || pos > (MAXLEN - 2)) pos = MAXLEN - 2;
496 sendBuf[pos+1] = '\0';
497 write_socket(client, sendBuf, pos+1);
500 struct ClientSocket* getBots(int flags, struct ClientSocket* last_bot) {
501 struct ClientSocket *sock = (last_bot ? last_bot->next : sockets->data);
502 if(sock == NULL) return NULL;
503 for (; sock; sock = sock->next) {
504 if(!flags || (sock->flags & flags) == flags)
510 void free_sockets() {
512 struct ClientSocket *client, *next;
513 for (client = sockets->data; client; client = next) {
515 if((client->flags & SOCKET_FLAG_CONNECTED))
517 if(client->flags & SOCKET_FLAG_HAVE_SSL)
518 ssl_disconnect(client);
520 queue_destroy(client);