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Commit | Line | Data |
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9de3ca7e | 1 | |
2 | /* | |
3 | * aim_conn.c | |
4 | * | |
5 | * Does all this gloriously nifty connection handling stuff... | |
6 | * | |
7 | */ | |
8 | ||
9 | #include "aim.h" | |
10 | ||
11 | void aim_connrst(void) | |
12 | { | |
13 | int i; | |
14 | for (i = 0; i < AIM_CONN_MAX; i++) | |
15 | { | |
16 | aim_conns[i].fd = -1; | |
17 | aim_conns[i].type = -1; | |
18 | aim_conns[i].status = 0; | |
19 | aim_conns[i].seqnum = 0; | |
20 | aim_conns[i].lastactivity = 0; | |
21 | aim_conns[i].forcedlatency = 0; | |
22 | aim_clearhandlers(&aim_conns[i]); | |
23 | aim_conns[i].handlerlist = NULL; | |
24 | } | |
25 | ||
26 | } | |
27 | ||
28 | struct aim_conn_t *aim_conn_getnext(void) | |
29 | { | |
30 | int i; | |
31 | for (i=0;i<AIM_CONN_MAX;i++) | |
32 | if (aim_conns[i].fd == -1) | |
33 | return &(aim_conns[i]); | |
34 | return NULL; | |
35 | } | |
36 | ||
37 | void aim_conn_close(struct aim_conn_t *deadconn) | |
38 | { | |
39 | if (deadconn->fd >= 3) | |
40 | close(deadconn->fd); | |
41 | deadconn->fd = -1; | |
42 | deadconn->type = -1; | |
43 | deadconn->seqnum = 0; | |
44 | deadconn->lastactivity = 0; | |
45 | deadconn->forcedlatency = 0; | |
46 | aim_clearhandlers(deadconn); | |
47 | deadconn->handlerlist = NULL; | |
48 | } | |
49 | ||
50 | struct aim_conn_t *aim_getconn_type(int type) | |
51 | { | |
52 | int i; | |
53 | for (i=0; i<AIM_CONN_MAX; i++) | |
54 | if (aim_conns[i].type == type) | |
55 | return &(aim_conns[i]); | |
56 | return NULL; | |
57 | } | |
58 | ||
59 | /* | |
60 | * aim_newconn(type, dest) | |
61 | * | |
62 | * Opens a new connection to the specified dest host of type type. | |
63 | * | |
64 | * TODO: fix for proxies | |
65 | * FIXME: Return errors in a more sane way. | |
66 | * | |
67 | */ | |
68 | struct aim_conn_t *aim_newconn(int type, char *dest) | |
69 | { | |
70 | struct aim_conn_t *connstruct; | |
71 | int ret; | |
72 | struct sockaddr_in sa; | |
73 | struct hostent *hp; | |
74 | u_short port = FAIM_LOGIN_PORT; | |
75 | int i=0; | |
76 | ||
77 | if (!dest || ((connstruct=aim_conn_getnext())==NULL)) | |
78 | return NULL; | |
79 | ||
80 | connstruct->type = type; | |
81 | ||
82 | /* | |
83 | * As of 23 Jul 1999, AOL now sends the port number, preceded by a | |
84 | * colon, in the BOS redirect. This fatally breaks all previous | |
85 | * libfaims. Bad, bad AOL. | |
86 | * | |
87 | * We put this here to catch every case. | |
88 | * | |
89 | */ | |
90 | ||
91 | for(i=0;(i<strlen(dest));i++) | |
92 | if (dest[i] == ':') { | |
93 | port = atoi(&(dest[i+1])); | |
94 | dest[i]=0; | |
95 | break; | |
96 | } | |
97 | ||
98 | hp = gethostbyname2(dest, AF_INET); | |
99 | if (hp == NULL) | |
100 | { | |
101 | connstruct->status = (h_errno | AIM_CONN_STATUS_RESOLVERR); | |
102 | return connstruct; | |
103 | } | |
104 | ||
105 | memset(&sa.sin_zero, 0, 8); | |
106 | sa.sin_port = htons(port); | |
107 | memcpy(&sa.sin_addr, hp->h_addr, hp->h_length); | |
108 | sa.sin_family = hp->h_addrtype; | |
109 | ||
110 | connstruct->fd = socket(hp->h_addrtype, SOCK_STREAM, 0); | |
111 | ret = connect(connstruct->fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)); | |
112 | if( ret < 0) | |
113 | { | |
114 | connstruct->fd = -1; | |
115 | connstruct->status = (errno | AIM_CONN_STATUS_CONNERR); | |
116 | return connstruct; | |
117 | } | |
118 | ||
119 | return connstruct; | |
120 | } | |
121 | ||
122 | int aim_conngetmaxfd(void) | |
123 | { | |
124 | int i,j; | |
125 | j=0; | |
126 | for (i=0;i<AIM_CONN_MAX;i++) | |
127 | if(aim_conns[i].fd > j) | |
128 | j = aim_conns[i].fd; | |
129 | return j; | |
130 | } | |
131 | ||
132 | int aim_countconn(void) | |
133 | { | |
134 | int i,cnt; | |
135 | cnt = 0; | |
136 | for (i=0;i<AIM_CONN_MAX;i++) | |
137 | if (aim_conns[i].fd > -1) | |
138 | cnt++; | |
139 | return cnt; | |
140 | } | |
141 | ||
142 | /* | |
143 | * aim_select(timeout) | |
144 | * | |
145 | * Waits for a socket with data or for timeout, whichever comes first. | |
146 | * See select(2). | |
147 | * | |
148 | */ | |
149 | struct aim_conn_t *aim_select(struct timeval *timeout) | |
150 | { | |
151 | fd_set fds; | |
152 | fd_set errfds; | |
153 | int i; | |
154 | ||
155 | if (aim_countconn() <= 0) | |
156 | return 0; | |
157 | ||
158 | /* | |
159 | * If we have data waiting to be sent, return immediatly | |
160 | */ | |
161 | if (aim_queue_outgoing) | |
162 | return (struct aim_conn_t *)1; | |
163 | ||
164 | FD_ZERO(&fds); | |
165 | FD_ZERO(&errfds); | |
166 | ||
167 | for(i=0;i<AIM_CONN_MAX;i++) | |
168 | if (aim_conns[i].fd>-1) | |
169 | { | |
170 | FD_SET(aim_conns[i].fd, &fds); | |
171 | FD_SET(aim_conns[i].fd, &errfds); | |
172 | } | |
173 | ||
174 | i = select(aim_conngetmaxfd()+1, &fds, NULL, &errfds, timeout); | |
175 | if (i>=1) | |
176 | { | |
177 | int j; | |
178 | for (j=0;j<AIM_CONN_MAX;j++) | |
179 | { | |
180 | if (aim_conns[j].fd > -1) | |
181 | { | |
182 | if ((FD_ISSET(aim_conns[j].fd, &errfds))) | |
183 | { | |
184 | /* got an exception; close whats left of it up */ | |
185 | aim_conn_close(&(aim_conns[j])); | |
186 | return (struct aim_conn_t *)-1; | |
187 | } | |
188 | else if ((FD_ISSET(aim_conns[j].fd, &fds))) | |
189 | return &(aim_conns[j]); /* return the first waiting struct */ | |
190 | } | |
191 | } | |
192 | /* should never get here */ | |
193 | } | |
194 | else | |
195 | return (struct aim_conn_t *)i; /* no waiting or error, return -- FIXME: return type funnies */ | |
196 | return NULL; /* NO REACH */ | |
197 | } | |
198 | ||
199 | int aim_conn_isready(struct aim_conn_t *conn) | |
200 | { | |
201 | if (conn) | |
202 | return (conn->status & 0x0001); | |
203 | else | |
204 | return -1; | |
205 | } | |
206 | ||
207 | int aim_conn_setstatus(struct aim_conn_t *conn, int status) | |
208 | { | |
209 | if (conn) | |
210 | return (conn->status ^= status); | |
211 | else | |
212 | return -1; | |
213 | } | |
214 | ||
215 | int aim_conn_setlatency(struct aim_conn_t *conn, int newval) | |
216 | { | |
217 | if (!conn) | |
218 | return -1; | |
219 | ||
220 | conn->forcedlatency = newval; | |
221 | conn->lastactivity = 0; /* reset this just to make sure */ | |
222 | ||
223 | return 0; | |
224 | } |