1 /* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 #ifndef _TCP_LINK_H_
3 #define _TCP_LINK_H_
4 
5 #ifdef HAVE_CONFIG_H
6 #include <config.h>
7 #endif
8 
9 #ifdef _WIN32
10 #include <winsock.h>
11 #else
12 #include <netinet/in.h>
13 #endif
14 
15 #include <time.h>
16 
17 #include "icq.h"
18 #include "icqpacket.h"
19 #include "list.h"
20 
21 /* link mode bitfield values */
22 #define TCP_LINK_MODE_RAW             1
23 #define TCP_LINK_MODE_HELLOWAIT       2
24 #define TCP_LINK_MODE_LISTEN          4
25 #define TCP_LINK_MODE_CONNECTING      8
26 #define TCP_LINK_SOCKS_CONNECTING     16
27 #define TCP_LINK_SOCKS_AUTHORIZATION  32
28 #define TCP_LINK_SOCKS_AUTHSTATUS     64
29 #define TCP_LINK_SOCKS_NOAUTHSTATUS   128
30 #define TCP_LINK_SOCKS_CROSSCONNECT   256
31 #define TCP_LINK_SOCKS_CONNSTATUS     512
32 
33 /* link types */
34 #define TCP_LINK_MESSAGE              1
35 #define TCP_LINK_CHAT                 2
36 #define TCP_LINK_FILE                 3
37 
38 #define icq_TCPLinkBufferSize 4096
39 #define TCP_LINK_CONNECT_TIMEOUT 30
40 
41 typedef struct icq_TCPLink_s
42 {
43    /* icq_TCPLink ICQLINK, type, mode, and session */
44    ICQLINK *icqlink;
45    int type;
46    int mode;
47    int proxy_status;
48    void *session;
49 
50    /* socket parameters */
51    int socket;
52    struct sockaddr_in socket_address;
53    struct sockaddr_in remote_address;
54 
55    /* data buffer for receive calls */
56    char buffer[icq_TCPLinkBufferSize];
57    int buffer_count;
58 
59    /* packet queues */
60    list *received_queue;
61    list *send_queue;
62 
63    /* icq specific data, initialized by hello packet */
64    unsigned long id;
65    unsigned long remote_version;
66    unsigned long remote_uin;
67    char flags;
68 
69    /* connect timer */
70    time_t connect_time;
71 
72 } icq_TCPLink;
73 
74 icq_TCPLink *icq_TCPLinkNew(ICQLINK *link);
75 void icq_TCPLinkDelete(void *p);
76 void icq_TCPLinkClose(icq_TCPLink *p);
77 void icq_TCPLinkNodeDelete(list_node *p);
78 
79 int icq_TCPLinkConnect(icq_TCPLink *plink, DWORD uin, int port);
80 icq_TCPLink *icq_TCPLinkAccept(icq_TCPLink *plink);
81 int icq_TCPLinkListen(icq_TCPLink *plink);
82 
83 int icq_TCPLinkOnDataReceived(icq_TCPLink *plink);
84 void icq_TCPLinkOnPacketReceived(icq_TCPLink *plink, icq_Packet *p);
85 void icq_TCPLinkOnConnect(icq_TCPLink *plink);
86 
87 unsigned long icq_TCPLinkSendSeq(icq_TCPLink *plink, icq_Packet *p,
88   unsigned long sequence);
89 void icq_TCPLinkSend(icq_TCPLink *plink, icq_Packet *p);
90 
91 void icq_TCPLinkProcessReceived(icq_TCPLink *plink);
92 
93 icq_TCPLink *icq_FindTCPLink(ICQLINK *link, unsigned long uin, int type);
94 
95 void icq_ChatRusConv_n(const char to[4], char *t_in, int t_len);
96 
97 #endif /* _TCP_LINK_H_ */
98