1 /* IOSockets.h - IOMultiplexer v2
2 * Copyright (C) 2014 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/>.
21 #include "IODNSAddress.struct.h"
23 struct IOSocketBuffer {
25 size_t bufpos, buflen;
28 #ifndef _IOHandler_internals
29 #include "IOHandler.h"
34 struct IOSocketBuffer;
35 struct IOSSLDescriptor;
42 void (*add)(struct _IOSocket *iosock);
43 void (*remove)(struct _IOSocket *iosock);
44 void (*update)(struct _IOSocket *iosock);
45 void (*loop)(struct timeval *timeout);
46 void (*cleanup)(void);
50 extern struct IOEngine engine_select; /* select system call (should always be useable) */
51 extern struct IOEngine engine_kevent;
52 extern struct IOEngine engine_epoll;
53 extern struct IOEngine engine_win32;
56 /* _IOSocket linked list */
57 extern struct _IOSocket *iosocket_first;
58 extern struct _IOSocket *iosocket_last;
60 /* _IOSocket socket_flags */
61 #define IOSOCKETFLAG_ACTIVE 0x0001
62 #define IOSOCKETFLAG_LISTENING 0x0002
63 #define IOSOCKETFLAG_PENDING_BINDDNS 0x0004
64 #define IOSOCKETFLAG_PENDING_DESTDNS 0x0008
65 #define IOSOCKETFLAG_DNSDONE_BINDDNS 0x0010
66 #define IOSOCKETFLAG_DNSDONE_DESTDNS 0x0020
67 #define IOSOCKETFLAG_DNSERROR 0x0040
68 #define IOSOCKETFLAG_IPV6SOCKET 0x0080
69 #define IOSOCKETFLAG_PARENT_PUBLIC 0x0100
70 #define IOSOCKETFLAG_PARENT_DNSENGINE 0x0200
71 #define IOSOCKETFLAG_SSLSOCKET 0x0400 /* use ssl after connecting */
72 #define IOSOCKETFLAG_SSL_HANDSHAKE 0x0800 /* SSL Handshake in progress */
73 #define IOSOCKETFLAG_SSL_WANTWRITE 0x1000
\r
74 #define IOSOCKETFLAG_SSL_READHS 0x2000 /* ssl read rehandshake */
\r
75 #define IOSOCKETFLAG_SSL_WRITEHS 0x4000 /* ssl write rehandshake */
76 #define IOSOCKETFLAG_SSL_ESTABLISHED 0x8000
77 #define IOSOCKETFLAG_SHUTDOWN 0x10000 /* disconnect pending */
78 #define IOSOCKETFLAG_CONNECTING 0x20000
79 #define IOSOCKETFLAG_INCOMING 0x40000 /* incoming (accepted) connection */
80 #define IOSOCKETFLAG_DEAD 0x80000
81 #define IOSOCKETFLAG_RECONNECT_IPV4 0x100000 /* possible fallback to ipv4 connect if ipv6 fails */
83 struct IOSocketDNSLookup {
84 unsigned int bindlookup : 1;
86 struct _IOSocket *iosocket;
87 struct _IODNSQuery *query;
88 struct IODNSResult *result;
94 unsigned int socket_flags : 24;
97 struct IODNSAddress addr;
98 struct IOSocketDNSLookup *addrlookup;
101 struct IODNSAddress addr;
102 struct IOSocketDNSLookup *addrlookup;
105 unsigned int port : 16;
107 struct IOSocketBuffer readbuf;
108 struct IOSocketBuffer writebuf;
110 struct IOSSLDescriptor *sslnode;
114 struct _IOSocket *next, *prev;
117 void _init_sockets();
118 void iosocket_loop(int usec);
119 void iosocket_lookup_callback(struct IOSocketDNSLookup *lookup, struct IODNSEvent *event);
120 void iosocket_events_callback(struct _IOSocket *iosock, int readable, int writeable);
122 #define iosocket_wants_writes(IOSOCK) ((IOSOCK->writebuf.bufpos && !(IOSOCK->socket_flags & (IOSOCKETFLAG_SSL_READHS | IOSOCKETFLAG_SSL_WRITEHS))) || (IOSOCK->socket_flags & (IOSOCKETFLAG_CONNECTING | IOSOCKETFLAG_SSL_WANTWRITE)))
126 struct IOSocketEvent;
128 #define IOSOCKET_CALLBACK(NAME) void NAME(struct IOSocketEvent *event)
129 typedef IOSOCKET_CALLBACK(iosocket_callback);
131 enum IOSocketStatus {
132 IOSOCKET_CLOSED, /* descriptor is dead (socket waiting for removal or timer) */
133 IOSOCKET_LISTENING, /* descriptor is waiting for connections (server socket) */
134 IOSOCKET_CONNECTING, /* descriptor is waiting for connection approval (connecting client socket) */
135 IOSOCKET_CONNECTED, /* descriptor is connected (connected client socket) */
136 IOSOCKET_SSLHANDSHAKE /* descriptor is waiting for ssl (handshake) */
139 enum IOSocketEventType {
140 IOSOCKETEVENT_IGNORE,
141 IOSOCKETEVENT_RECV, /* client socket received something (read_lines == 1 => recv_str valid; read_lines == 0 => recv_buf valid) */
142 IOSOCKETEVENT_CONNECTED, /* client socket connected successful */
143 IOSOCKETEVENT_NOTCONNECTED, /* client socket could not connect (errid valid) */
144 IOSOCKETEVENT_CLOSED, /* client socket lost connection (errid valid) */
145 IOSOCKETEVENT_ACCEPT, /* server socket accepted new connection (accept_socket valid) */
146 IOSOCKETEVENT_DNSFAILED /* failed to lookup DNS information (recv_str contains error message) */
152 enum IOSocketStatus status;
155 int parse_delimiter : 1;
156 int parse_empty : 1; /* parse "empty" lines (only if parse_delimiter is set) */
157 unsigned char delimiters[IOSOCKET_PARSE_DELIMITERS_COUNT];
160 iosocket_callback *callback;
163 struct IOSocketEvent {
164 enum IOSocketEventType type;
165 struct IOSocket *socket;
168 struct IOSocketBuffer *recv_buf;
170 struct IOSocket *accept_socket;
175 #define IOSOCKET_ADDR_IPV4 0x01
176 #define IOSOCKET_ADDR_IPV6 0x02 /* overrides IOSOCKET_ADDR_IPV4 */
177 #define IOSOCKET_PROTO_UDP 0x04
179 struct IOSocket *iosocket_connect(const char *hostname, unsigned int port, int ssl, const char *bindhost, iosocket_callback *callback);
180 struct IOSocket *iosocket_connect_flags(const char *hostname, unsigned int port, int ssl, const char *bindhost, iosocket_callback *callback, int flags);
181 struct IOSocket *iosocket_listen(const char *hostname, unsigned int port, iosocket_callback *callback);
182 struct IOSocket *iosocket_listen_flags(const char *hostname, unsigned int port, iosocket_callback *callback, int flags);
183 struct IOSocket *iosocket_listen_ssl(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iosocket_callback *callback);
184 struct IOSocket *iosocket_listen_ssl_flags(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iosocket_callback *callback, int flags);
185 void iosocket_write(struct IOSocket *iosocket, const char *line);
186 void iosocket_send(struct IOSocket *iosocket, const char *data, size_t datalen);
187 void iosocket_printf(struct IOSocket *iosocket, const char *text, ...);
188 void iosocket_close(struct IOSocket *iosocket);