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 struct socket_list *sockets = NULL;
35 static char buffer[BUF_SIZ];
37 static void init_sockets() {
38 sockets = malloc(sizeof(*sockets));
41 perror("malloc() failed");
48 struct ClientSocket* create_socket(char *host, int port, char *bindto, char *pass, char *nick, char *ident, char *realname) {
49 if(sockets == NULL) init_sockets();
50 struct ClientSocket *client = malloc(sizeof(*client));
53 perror("malloc() failed");
56 client->host = strdup(host);
58 client->bind = (bindto ? strdup(bindto) : NULL);
59 client->pass = (pass == NULL ? NULL : strdup(pass));
60 client->nick = strdup(nick);
61 client->ident = strdup(ident);
62 client->realname = strdup(realname);
65 client->bufferpos = 0;
66 client->traffic_in = 0;
67 client->traffic_out = 0;
68 client->connection_time = 0;
72 client->whoqueue_first = NULL;
73 client->whoqueue_last = NULL;
74 client->handleinfo_first = NULL;
75 client->handleinfo_last = NULL;
76 client->next = sockets->data;
77 sockets->data = client;
82 int connect_socket(struct ClientSocket *client) {
83 if((client->flags & SOCKET_FLAG_CONNECTED)) return 1;
86 struct addrinfo hints, *res;
87 struct sockaddr_in *ip4 = NULL;
88 struct sockaddr_in6 *ip6 = NULL;
89 memset (&hints, 0, sizeof (hints));
90 hints.ai_family = PF_UNSPEC;
91 hints.ai_socktype = SOCK_STREAM;
92 hints.ai_flags |= AI_CANONNAME;
93 if (getaddrinfo (client->host, NULL, &hints, &res)) {
97 switch (res->ai_family) {
99 ip4 = (struct sockaddr_in *) res->ai_addr;
102 ip6 = (struct sockaddr_in6 *) res->ai_addr;
109 sock = socket(AF_INET6, SOCK_STREAM, 0);
111 perror("socket() failed");
115 ip6->sin6_family = AF_INET6;
116 ip6->sin6_port = htons(client->port);
118 struct sockaddr_in6 *ip6vhost = NULL;
119 if (client->bind && !getaddrinfo(client->bind, NULL, &hints, &res)) {
121 switch (res->ai_family) {
123 ip6vhost = (struct sockaddr_in6 *) res->ai_addr;
130 ip6vhost->sin6_family = AF_INET6;
131 ip6vhost->sin6_port = htons(0);
132 bind(sock, (struct sockaddr*)ip6vhost, sizeof(*ip6vhost));
135 if (connect(sock, (struct sockaddr*)ip6, sizeof(*ip6)) == -1) {
136 perror("connect() failed");
141 sock = socket(AF_INET, SOCK_STREAM, 0);
143 perror("socket() failed");
147 ip4->sin_family = AF_INET;
148 ip4->sin_port = htons(client->port);
150 struct sockaddr_in *ip4vhost = NULL;
151 if (client->bind && !getaddrinfo(client->bind, NULL, &hints, &res)) {
153 switch (res->ai_family) {
155 ip4vhost = (struct sockaddr_in *) res->ai_addr;
162 ip4vhost->sin_family = AF_INET;
163 ip4vhost->sin_port = htons(0);
164 bind(sock, (struct sockaddr*)ip4vhost, sizeof(*ip4vhost));
167 if (connect(sock, (struct sockaddr*)ip4, sizeof(*ip4)) == -1) {
168 perror("connect() failed");
175 if(get_int_field("Sockets.NoDelay")) {
177 if(setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) == -1) {
178 perror("setsockopt() failed");
184 client->flags |= SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT;
185 client->connection_time = time(0);
187 if(client->flags & SOCKET_FLAG_SSL) {
189 client->flags |= SOCKET_FLAG_HAVE_SSL;
191 client->flags &= ~SOCKET_FLAG_HAVE_SSL;
193 //send the IRC Headers
197 if(client->pass && strcmp(client->pass, "")) {
198 len = sprintf(sendBuf, "PASS :%s\n", client->pass);
199 write_socket(client, sendBuf, len);
201 len = sprintf(sendBuf, "USER %s 0 0 :%s\n", client->ident, client->realname);
202 write_socket(client, sendBuf, len);
203 len = sprintf(sendBuf, "NICK %s\n", client->nick);
204 write_socket(client, sendBuf, len);
209 int connect_socket(struct ClientSocket *client) {
210 if((client->flags & SOCKET_FLAG_CONNECTED)) return 1;
211 struct hostent *host;
212 struct sockaddr_in addr;
214 addr.sin_addr.s_addr = inet_addr(client->host);
215 if (addr.sin_addr.s_addr == INADDR_NONE) {
216 host = gethostbyname(client->host);
220 memcpy(&(addr.sin_addr), host->h_addr_list[0], 4);
222 sock = socket(PF_INET, SOCK_STREAM, 0);
225 perror("socket() failed");
229 addr.sin_port = htons(client->port);
230 addr.sin_family = AF_INET;
232 if (connect(sock, (struct sockaddr*)&addr, sizeof(addr)) == -1)
234 perror("connect() failed");
239 client->flags |= SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT;
240 client->connection_time = time(0);
243 if(client->flags & SOCKET_FLAG_SSL) {
245 client->flags |= SOCKET_FLAG_HAVE_SSL;
247 client->flags &= ~SOCKET_FLAG_HAVE_SSL;
249 //send the IRC Headers
253 if(client->pass && strcmp(client->pass, "")) {
254 len = sprintf(sendBuf, "PASS :%s\n", client->pass);
255 write_socket(client, sendBuf, len);
257 len = sprintf(sendBuf, "USER %s 0 0 :%s\n", client->ident, client->realname);
258 write_socket(client, sendBuf, len);
259 len = sprintf(sendBuf, "NICK %s\n", client->nick);
260 write_socket(client, sendBuf, len);
266 int close_socket(struct ClientSocket *client) {
267 if(client == NULL) return 0;
268 if((client->flags & SOCKET_FLAG_CONNECTED)) {
269 char quitbuf[MAXLEN];
270 int quitlen = sprintf(quitbuf, "QUIT :[NeonServ %s.%d] disconnect requested.\n", NEONSERV_VERSION, patchlevel);
271 write_socket_force(client, quitbuf, quitlen);
273 client->flags &= ~(SOCKET_FLAG_READY | SOCKET_FLAG_RECONNECT);
274 client->flags |= SOCKET_FLAG_QUITTED | SOCKET_FLAG_DEAD;
278 int disconnect_socket(struct ClientSocket *client) {
279 if(client == NULL) return 0;
280 if((client->flags & SOCKET_FLAG_CONNECTED)) {
281 char quitbuf[MAXLEN];
282 int quitlen = sprintf(quitbuf, "QUIT :[NeonServ %s.%d] disconnect requested.\n", NEONSERV_VERSION, patchlevel);
283 write_socket_force(client, quitbuf, quitlen);
285 client->flags &= ~(SOCKET_FLAG_READY | SOCKET_FLAG_RECONNECT);
286 client->flags |= SOCKET_FLAG_QUITTED;
290 static void destroy_socket(struct ClientSocket *client, int free_socket) {
291 if((client->flags & SOCKET_FLAG_CONNECTED)) {
293 bot_disconnect(client);
295 if(client->flags & SOCKET_FLAG_HAVE_SSL)
296 ssl_disconnect(client);
298 queue_destroy(client);
299 if(client->whoqueue_first)
300 clear_whoqueue(client);
301 if(client->handleinfo_first)
302 clear_handleinfoqueue(client);
303 client->flags &= ~(SOCKET_FLAG_CONNECTED | SOCKET_FLAG_READY | SOCKET_FLAG_HAVE_SSL);
305 struct ClientSocket *sock, *last_sock = NULL;
306 for (sock = sockets->data; sock; sock = sock->next) {
309 last_sock->next = sock->next;
311 sockets->data = sock->next;
323 } else if(client->flags & SOCKET_FLAG_FAST_JUMP) {
324 client->flags &= ~SOCKET_FLAG_FAST_JUMP;
325 connect_socket(client);
329 int write_socket_force(struct ClientSocket *client, char* msg, int len) {
330 printf("[send %d] %s", len, msg);
331 if(!(client->flags & SOCKET_FLAG_HAVE_SSL) || ssl_write(client, msg, len) == -2) {
333 send(client->sock, msg, len, 0);
335 write(client->sock, msg, len);
338 client->traffic_out += len;
342 int write_socket(struct ClientSocket *client, char* msg, int len) {
343 if(!(client && (client->flags & SOCKET_FLAG_CONNECTED))) return 0;
344 if(client->flags & SOCKET_FLAG_USE_QUEUE)
345 return queue_add(client, msg, len);
347 return write_socket_force(client, msg, len);
350 void socket_loop(int timeout_seconds) {
351 if(sockets == NULL) return;
353 struct timeval timeout;
354 struct ClientSocket *sock, *next;
355 int ret = 0, bytes, i;
358 for (sock = sockets->data; sock; sock = sock->next) {
359 if(!(sock->flags & SOCKET_FLAG_CONNECTED)) continue; //skip disconnected sockets
360 FD_SET(sock->sock, &fds);
364 timeout.tv_sec = timeout_seconds;
366 ret = select(ret + 1, &fds, NULL, NULL, &timeout);
368 for (sock = sockets->data; sock; sock = next) {
370 if((sock->flags & (SOCKET_FLAG_CONNECTED | SOCKET_FLAG_QUITTED)) == SOCKET_FLAG_CONNECTED && FD_ISSET(sock->sock, &fds)) {
371 if(sock->bufferpos != 0) {
372 if(!(sock->flags & SOCKET_FLAG_HAVE_SSL) || (bytes = ssl_read(sock, buffer, sizeof(buffer))) == -2) {
374 bytes = recv(sock->sock, buffer, sizeof(buffer), 0);
376 bytes = read(sock->sock, buffer, sizeof(buffer));
380 for(i = 0; i < bytes; i++) {
381 if(sock->bufferpos + i == BUF_SIZ*2) break; //buffer overflow
382 sock->buffer[sock->bufferpos + i] = buffer[i];
384 sock->bufferpos += i;
387 if(!(sock->flags & SOCKET_FLAG_HAVE_SSL) || (bytes = ssl_read(sock, sock->buffer, sizeof(sock->buffer))) == -2) {
389 bytes = recv(sock->sock, sock->buffer, sizeof(sock->buffer), 0);
391 bytes = read(sock->sock, sock->buffer, sizeof(sock->buffer));
395 sock->bufferpos = bytes;
399 sock->flags |= SOCKET_FLAG_QUITTED;
401 sock->traffic_in += bytes;
402 int used = parse_lines(sock, sock->buffer, sock->bufferpos);
403 if(used == sock->bufferpos + 1) {
404 //used all bytes so just reset the bufferpos
407 for(i = 0; i < sock->bufferpos - used; i++) {
408 sock->buffer[i] = sock->buffer[i+used];
410 sock->bufferpos -= used;
413 } else if((sock->flags & (SOCKET_FLAG_CONNECTED | SOCKET_FLAG_RECONNECT)) == SOCKET_FLAG_RECONNECT) {
414 if(time(0) - sock->connection_time >= SOCKET_RECONNECT_TIME) {
415 connect_socket(sock);
418 if((sock->flags & SOCKET_FLAG_QUITTED)) {
419 sock->flags &= ~SOCKET_FLAG_QUITTED;
420 destroy_socket(sock, (sock->flags & SOCKET_FLAG_DEAD));
426 putsock(struct ClientSocket *client, const char *text, ...)
429 char sendBuf[MAXLEN];
431 if (!(client && (client->flags & SOCKET_FLAG_CONNECTED))) return;
433 va_start(arg_list, text);
434 pos = vsnprintf(sendBuf, MAXLEN - 2, text, arg_list);
436 if (pos < 0 || pos > (MAXLEN - 2)) pos = MAXLEN - 2;
438 sendBuf[pos+1] = '\0';
439 write_socket(client, sendBuf, pos+1);
442 struct ClientSocket* getBots(int flags, struct ClientSocket* last_bot) {
443 struct ClientSocket *sock = (last_bot ? last_bot->next : sockets->data);
444 if(sock == NULL) return NULL;
445 for (; sock; sock = sock->next) {
446 if(!flags || (sock->flags & flags) == flags)
452 void free_sockets() {
454 struct ClientSocket *client, *next;
455 for (client = sockets->data; client; client = next) {
457 if((client->flags & SOCKET_FLAG_CONNECTED))
459 if(client->flags & SOCKET_FLAG_HAVE_SSL)
460 ssl_disconnect(client);
462 queue_destroy(client);