source: trunk/module-radegast.c@ 1673

Last change on this file since 1673 was 1673, checked in by merek, 11 years ago

Fix logging message in module-radegast

File size: 7.1 KB
Line 
1#include "globals.h"
2
3static int radegast_send(uchar *buf)
4{
5 int l=buf[1]+2;
6 return(send(pfd, buf, l, 0));
7}
8
9static int radegast_recv(uchar *buf, int l)
10{
11 int n;
12 if (!pfd) return(-1);
13 if (is_server) { // server code
14 if ((n=recv(pfd, buf, l, 0))>0)
15 client[cs_idx].last=time((time_t *) 0);
16 } else { // client code
17 if ((n=recv(pfd, buf, l, 0))>0) {
18 cs_ddump(buf, n, "radegast: received %d bytes from %s", n, remote_txt());
19 client[cs_idx].last = time((time_t *) 0);
20
21 if (buf[0] == 2) { // dcw received
22 if (buf[3] != 0x10) { // dcw ok
23 cs_log("radegast: no dcw");
24 n = -1;
25 }
26 }
27 }
28 }
29 return(n);
30}
31
32static int radegast_recv_chk(uchar *dcw, int *rc, uchar *buf)
33{
34 if ((buf[0] == 2) && (buf[1] == 0x12)) {
35 memcpy(dcw, buf+4, 16);
36 cs_debug("radegast: recv chk - %s", cs_hexdump(0, dcw, 16));
37 *rc = 1;
38 return(reader[ridx].msg_idx);
39 }
40
41 return (-1);
42}
43
44static void radegast_auth_client(in_addr_t ip)
45{
46 int ok;
47 struct s_auth *account;
48 struct s_ip *p_ip;
49
50 for (ok=0, p_ip=cfg->rad_allowed; (p_ip) && (!ok); p_ip=p_ip->next)
51 ok=((ip>=p_ip->ip[0]) && (ip<=p_ip->ip[1]));
52
53 if (!ok)
54 {
55 cs_auth_client((struct s_auth *)0, NULL);
56 cs_exit(0);
57 }
58
59 for (ok=0, account=cfg->account; (cfg->rad_usr[0]) && (account) && (!ok); account=account->next)
60 {
61 ok=(!strcmp(cfg->rad_usr, account->usr));
62 if (ok && cs_auth_client(account, NULL))
63 cs_exit(0);
64 }
65
66 if (!ok)
67 cs_auth_client((struct s_auth *)(-1), NULL);
68}
69
70static int get_request(uchar *buf)
71{
72 int n, rc=0;
73 if ((n=process_input(buf, 2, cfg->cmaxidle))==2)
74 {
75 if ((n=process_input(buf+2, buf[1], 0))>=0)
76 n+=2;
77 if (n-2==buf[1])
78 rc=n;
79 else
80 cs_log("WARNING: protocol error (garbage)");
81 }
82 if (n>0)
83 cs_ddump(buf, n, "received %d bytes from client", n);
84 return(rc);
85}
86
87static void radegast_send_dcw(ECM_REQUEST *er)
88{
89 mbuf[0]=0x02; // DCW
90 if (er->rc<4)
91 {
92 mbuf[1]=0x12; // len (overall)
93 mbuf[2]=0x05; // ACCESS
94 mbuf[3]=0x10; // len
95 memcpy(mbuf+4, er->cw, 16);
96 }
97 else
98 {
99 mbuf[1]=0x02; // len (overall)
100 mbuf[2]=0x04; // NO ACCESS
101 mbuf[3]=0x00; // len
102 }
103 radegast_send(mbuf);
104}
105
106static void radegast_process_ecm(uchar *buf, int l)
107{
108 int i, n, sl;
109 ECM_REQUEST *er;
110
111 if (!(er=get_ecmtask()))
112 return;
113 for (i=0; i<l; i+=(sl+2))
114 {
115 sl=buf[i+1];
116 switch(buf[i])
117 {
118 case 2: // CAID (upper byte only, oldstyle)
119 er->caid=buf[i+2]<<8;
120 break;
121 case 10: // CAID
122 er->caid=b2i(2, buf+i+2);
123 break;
124 case 3: // ECM DATA
125 er->l=sl;
126 memcpy(er->ecm, buf+i+2, er->l);
127 break;
128 case 6: // PROVID (ASCII)
129 n=(sl>6) ? 3 : (sl>>1);
130 er->prid=cs_atoi((char *) buf+i+2+sl-(n<<1), n, 0);
131 break;
132 case 7: // KEYNR (ASCII), not needed
133 break;
134 case 8: // ECM PROCESS PID ?? don't know, not needed
135 break;
136 }
137 }
138 if (l!=i)
139 cs_log("WARNING: ECM-request corrupt");
140 else
141 get_cw(er);
142}
143
144static void radegast_process_unknown(uchar *buf)
145{
146 uchar answer[2]={0x81, 0x00};
147 radegast_send(answer);
148 cs_log("unknown request %02X, len=%d", buf[0], buf[1]);
149}
150
151static void radegast_server()
152{
153 int n;
154
155 radegast_auth_client(client[cs_idx].ip);
156 while ((n=get_request(mbuf))>0)
157 {
158 switch(mbuf[0])
159 {
160 case 1:
161 radegast_process_ecm(mbuf+2, mbuf[1]);
162 break;
163 default:
164 radegast_process_unknown(mbuf);
165 }
166 }
167 cs_disconnect_client();
168}
169
170static int radegast_send_ecm(ECM_REQUEST *er)
171{
172 int n;
173 uchar provid_buf[8];
174 uchar header[22] = "\x02\x01\x00\x06\x08\x30\x30\x30\x30\x30\x30\x30\x30\x07\x04\x30\x30\x30\x38\x08\x01\x02";
175 uchar *ecmbuf = malloc(er->l + 30);
176 memset(ecmbuf, 0, er->l + 30);
177
178 ecmbuf[0] = 1;
179 ecmbuf[1] = er->l + 30 - 2;
180 memcpy(ecmbuf + 2, header, sizeof(header));
181 for(n = 0; n < 4; n++) {
182 sprintf((char*)provid_buf+(n*2), "%02X", ((uchar *)(&er->prid))[4 - 1 - n]);
183 }
184 ecmbuf[7] = provid_buf[0];
185 ecmbuf[8] = provid_buf[1];
186 ecmbuf[9] = provid_buf[2];
187 ecmbuf[10] = provid_buf[3];
188 ecmbuf[11] = provid_buf[4];
189 ecmbuf[12] = provid_buf[5];
190 ecmbuf[13] = provid_buf[6];
191 ecmbuf[14] = provid_buf[7];
192 ecmbuf[2 + sizeof(header)] = 0xa;
193 ecmbuf[3 + sizeof(header)] = 2;
194 ecmbuf[4 + sizeof(header)] = er->caid >> 8;
195 ecmbuf[5 + sizeof(header)] = er->caid & 0xff;
196 ecmbuf[6 + sizeof(header)] = 3;
197 ecmbuf[7 + sizeof(header)] = er->l;
198 memcpy(ecmbuf + 8 + sizeof(header), er->ecm, er->l);
199 ecmbuf[4] = er->caid >> 8;
200
201 reader[ridx].msg_idx = er->idx;
202 n = send(pfd, ecmbuf, er->l + 30, 0);
203
204 cs_log("radegast: sending ecm");
205 cs_ddump(ecmbuf, er->l + 30, "ecm:");
206
207 free(ecmbuf);
208
209 return 0;
210}
211
212int radegast_cli_init(void)
213{
214 static struct sockaddr_in loc_sa;
215 struct protoent *ptrp;
216 int p_proto, handle;
217
218 pfd=0;
219 if (reader[ridx].r_port<=0)
220 {
221 cs_log("radegast: invalid port %d for server %s", reader[ridx].r_port, reader[ridx].device);
222 return(1);
223 }
224 if( (ptrp=getprotobyname("tcp")) )
225 p_proto=ptrp->p_proto;
226 else
227 p_proto=6;
228
229 client[cs_idx].ip=0;
230 memset((char *)&loc_sa,0,sizeof(loc_sa));
231 loc_sa.sin_family = AF_INET;
232#ifdef LALL
233 if (cfg->serverip[0])
234 loc_sa.sin_addr.s_addr = inet_addr(cfg->serverip);
235 else
236#endif
237 loc_sa.sin_addr.s_addr = INADDR_ANY;
238 loc_sa.sin_port = htons(reader[ridx].l_port);
239
240 if ((client[cs_idx].udp_fd=socket(PF_INET, SOCK_STREAM, p_proto))<0)
241 {
242 cs_log("radegast: Socket creation failed (errno=%d)", errno);
243 cs_exit(1);
244 }
245
246#ifdef SO_PRIORITY
247 if (cfg->netprio)
248 setsockopt(client[cs_idx].udp_fd, SOL_SOCKET, SO_PRIORITY,
249 (void *)&cfg->netprio, sizeof(ulong));
250#endif
251 if (!reader[ridx].tcp_ito) {
252 ulong keep_alive = reader[ridx].tcp_ito?1:0;
253 setsockopt(client[cs_idx].udp_fd, SOL_SOCKET, SO_KEEPALIVE,
254 (void *)&keep_alive, sizeof(ulong));
255 }
256
257 memset((char *)&client[cs_idx].udp_sa,0,sizeof(client[cs_idx].udp_sa));
258 client[cs_idx].udp_sa.sin_family = AF_INET;
259 client[cs_idx].udp_sa.sin_port = htons((u_short)reader[ridx].r_port);
260
261 struct hostent *server;
262 server = gethostbyname(reader[ridx].device);
263 memmove((char *)&client[cs_idx].udp_sa.sin_addr.s_addr, (char *)server->h_addr, server->h_length);
264
265 cs_log("radegast: proxy %s:%d (fd=%d)",
266 reader[ridx].device, reader[ridx].r_port, client[cs_idx].udp_fd);
267
268 handle = network_tcp_connection_open();
269 if(handle < 0) return -1;
270
271 reader[ridx].tcp_connected = 1;
272 reader[ridx].last_g = reader[ridx].last_s = time((time_t *)0);
273
274 cs_debug("radegast: last_s=%d, last_g=%d", reader[ridx].last_s, reader[ridx].last_g);
275
276 pfd=client[cs_idx].udp_fd;
277
278 return(0);
279}
280
281void module_radegast(struct s_module *ph)
282{
283 static PTAB ptab;
284 ptab.ports[0].s_port = cfg->rad_port;
285 ph->ptab = &ptab;
286 ph->ptab->nports = 1;
287
288 strcpy(ph->desc, "radegast");
289 ph->type=MOD_CONN_TCP;
290 ph->multi=0;
291 ph->watchdog=1;
292 ph->s_ip=cfg->rad_srvip;
293 ph->s_handler=radegast_server;
294 ph->recv=radegast_recv;
295 ph->send_dcw=radegast_send_dcw;
296 ph->c_multi=0;
297 ph->c_init=radegast_cli_init;
298 ph->c_recv_chk=radegast_recv_chk;
299 ph->c_send_ecm=radegast_send_ecm;
300}
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