source: trunk/module-radegast.c@ 3181

Last change on this file since 3181 was 3181, checked in by dingo35, 10 years ago

Adding threadsafety FIXMEs, feel free to join checking..

File size: 7.5 KB
Line 
1//FIXME Not checked on threadsafety yet; after checking please remove this line
2#include "globals.h"
3extern struct s_reader * reader;
4
5static int radegast_send(uchar *buf)
6{
7 int l=buf[1]+2;
8 return(send(client[cs_idx].pfd, buf, l, 0));
9}
10
11static int radegast_recv(uchar *buf, int l)
12{
13 int n;
14 if (!client[cs_idx].pfd) return(-1);
15 if (client[cs_idx].is_server) { // server code
16 if ((n=recv(client[cs_idx].pfd, buf, l, 0))>0)
17 client[cs_idx].last=time((time_t *) 0);
18 } else { // client code
19 if ((n=recv(client[cs_idx].pfd, buf, l, 0))>0) {
20 cs_ddump(buf, n, "radegast: received %d bytes from %s", n, remote_txt());
21 client[cs_idx].last = time((time_t *) 0);
22
23 if (buf[0] == 2) { // dcw received
24 if (buf[3] != 0x10) { // dcw ok
25 cs_log("radegast: no dcw");
26 n = -1;
27 }
28 }
29 }
30 }
31 return(n);
32}
33
34static int radegast_recv_chk(uchar *dcw, int *rc, uchar *buf)
35{
36 if ((buf[0] == 2) && (buf[1] == 0x12)) {
37 memcpy(dcw, buf+4, 16);
38 cs_debug("radegast: recv chk - %s", cs_hexdump(0, dcw, 16));
39 *rc = 1;
40 return(reader[client[cs_idx].ridx].msg_idx);
41 }
42
43 return (-1);
44}
45
46static void radegast_auth_client(in_addr_t ip)
47{
48 int ok;
49 struct s_auth *account;
50 struct s_ip *p_ip;
51
52 for (ok=0, p_ip=cfg->rad_allowed; (p_ip) && (!ok); p_ip=p_ip->next)
53 ok=((ip>=p_ip->ip[0]) && (ip<=p_ip->ip[1]));
54
55 if (!ok)
56 {
57 cs_auth_client((struct s_auth *)0, NULL);
58 cs_exit(0);
59 }
60
61 for (ok=0, account=cfg->account; (cfg->rad_usr[0]) && (account) && (!ok); account=account->next)
62 {
63 ok=(!strcmp(cfg->rad_usr, account->usr));
64 if (ok && cs_auth_client(account, NULL))
65 cs_exit(0);
66 }
67
68 if (!ok)
69 cs_auth_client((struct s_auth *)(-1), NULL);
70}
71
72static int get_request(uchar *buf)
73{
74 int n, rc=0;
75 if ((n=process_input(buf, 2, cfg->cmaxidle))==2)
76 {
77 if ((n=process_input(buf+2, buf[1], 0))>=0)
78 n+=2;
79 if (n-2==buf[1])
80 rc=n;
81 else
82 cs_log("WARNING: protocol error (garbage)");
83 }
84 if (n>0)
85 cs_ddump(buf, n, "received %d bytes from client", n);
86 return(rc);
87}
88
89static void radegast_send_dcw(ECM_REQUEST *er)
90{
91 uchar mbuf[1024];
92 mbuf[0]=0x02; // DCW
93 if (er->rc<4)
94 {
95 mbuf[1]=0x12; // len (overall)
96 mbuf[2]=0x05; // ACCESS
97 mbuf[3]=0x10; // len
98 memcpy(mbuf+4, er->cw, 16);
99 }
100 else
101 {
102 mbuf[1]=0x02; // len (overall)
103 mbuf[2]=0x04; // NO ACCESS
104 mbuf[3]=0x00; // len
105 }
106 radegast_send(mbuf);
107}
108
109static void radegast_process_ecm(uchar *buf, int l)
110{
111 int i, n, sl;
112 ECM_REQUEST *er;
113
114 if (!(er=get_ecmtask()))
115 return;
116 for (i=0; i<l; i+=(sl+2))
117 {
118 sl=buf[i+1];
119 switch(buf[i])
120 {
121 case 2: // CAID (upper byte only, oldstyle)
122 er->caid=buf[i+2]<<8;
123 break;
124 case 10: // CAID
125 er->caid=b2i(2, buf+i+2);
126 break;
127 case 3: // ECM DATA
128 er->l=sl;
129 memcpy(er->ecm, buf+i+2, er->l);
130 break;
131 case 6: // PROVID (ASCII)
132 n=(sl>6) ? 3 : (sl>>1);
133 er->prid=cs_atoi((char *) buf+i+2+sl-(n<<1), n, 0);
134 break;
135 case 7: // KEYNR (ASCII), not needed
136 break;
137 case 8: // ECM PROCESS PID ?? don't know, not needed
138 break;
139 }
140 }
141 if (l!=i)
142 cs_log("WARNING: ECM-request corrupt");
143 else
144 get_cw(er);
145}
146
147static void radegast_process_unknown(uchar *buf)
148{
149 uchar answer[2]={0x81, 0x00};
150 radegast_send(answer);
151 cs_log("unknown request %02X, len=%d", buf[0], buf[1]);
152}
153
154static void radegast_server(void *idx)
155{
156 int n;
157 uchar mbuf[1024];
158
159 int cidx=(int)idx;
160 client[cidx].thread=pthread_self();
161
162 radegast_auth_client(client[cs_idx].ip);
163 while ((n=get_request(mbuf))>0)
164 {
165 switch(mbuf[0])
166 {
167 case 1:
168 radegast_process_ecm(mbuf+2, mbuf[1]);
169 break;
170 default:
171 radegast_process_unknown(mbuf);
172 }
173 }
174 cs_disconnect_client();
175}
176
177static int radegast_send_ecm(ECM_REQUEST *er)
178{
179 int n;
180 uchar provid_buf[8];
181 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";
182 uchar *ecmbuf = malloc(er->l + 30);
183 memset(ecmbuf, 0, er->l + 30);
184
185 ecmbuf[0] = 1;
186 ecmbuf[1] = er->l + 30 - 2;
187 memcpy(ecmbuf + 2, header, sizeof(header));
188 for(n = 0; n < 4; n++) {
189 sprintf((char*)provid_buf+(n*2), "%02X", ((uchar *)(&er->prid))[4 - 1 - n]);
190 }
191 ecmbuf[7] = provid_buf[0];
192 ecmbuf[8] = provid_buf[1];
193 ecmbuf[9] = provid_buf[2];
194 ecmbuf[10] = provid_buf[3];
195 ecmbuf[11] = provid_buf[4];
196 ecmbuf[12] = provid_buf[5];
197 ecmbuf[13] = provid_buf[6];
198 ecmbuf[14] = provid_buf[7];
199 ecmbuf[2 + sizeof(header)] = 0xa;
200 ecmbuf[3 + sizeof(header)] = 2;
201 ecmbuf[4 + sizeof(header)] = er->caid >> 8;
202 ecmbuf[5 + sizeof(header)] = er->caid & 0xff;
203 ecmbuf[6 + sizeof(header)] = 3;
204 ecmbuf[7 + sizeof(header)] = er->l;
205 memcpy(ecmbuf + 8 + sizeof(header), er->ecm, er->l);
206 ecmbuf[4] = er->caid >> 8;
207
208 reader[client[cs_idx].ridx].msg_idx = er->idx;
209 n = send(client[cs_idx].pfd, ecmbuf, er->l + 30, 0);
210
211 cs_log("radegast: sending ecm");
212 cs_ddump(ecmbuf, er->l + 30, "ecm:");
213
214 free(ecmbuf);
215
216 return 0;
217}
218
219int radegast_cli_init(void)
220{
221 static struct sockaddr_in loc_sa;
222 struct protoent *ptrp;
223 int p_proto, handle;
224
225 client[cs_idx].pfd=0;
226 if (reader[client[cs_idx].ridx].r_port<=0)
227 {
228 cs_log("radegast: invalid port %d for server %s", reader[client[cs_idx].ridx].r_port, reader[client[cs_idx].ridx].device);
229 return(1);
230 }
231 if( (ptrp=getprotobyname("tcp")) )
232 p_proto=ptrp->p_proto;
233 else
234 p_proto=6;
235
236 client[cs_idx].ip=0;
237 memset((char *)&loc_sa,0,sizeof(loc_sa));
238 loc_sa.sin_family = AF_INET;
239#ifdef LALL
240 if (cfg->serverip[0])
241 loc_sa.sin_addr.s_addr = inet_addr(cfg->serverip);
242 else
243#endif
244 loc_sa.sin_addr.s_addr = INADDR_ANY;
245 loc_sa.sin_port = htons(reader[client[cs_idx].ridx].l_port);
246
247 if ((client[cs_idx].udp_fd=socket(PF_INET, SOCK_STREAM, p_proto))<0)
248 {
249 cs_log("radegast: Socket creation failed (errno=%d)", errno);
250 cs_exit(1);
251 }
252
253#ifdef SO_PRIORITY
254 if (cfg->netprio)
255 setsockopt(client[cs_idx].udp_fd, SOL_SOCKET, SO_PRIORITY,
256 (void *)&cfg->netprio, sizeof(ulong));
257#endif
258 if (!reader[client[cs_idx].ridx].tcp_ito) {
259 ulong keep_alive = reader[client[cs_idx].ridx].tcp_ito?1:0;
260 setsockopt(client[cs_idx].udp_fd, SOL_SOCKET, SO_KEEPALIVE,
261 (void *)&keep_alive, sizeof(ulong));
262 }
263
264 memset((char *)&client[cs_idx].udp_sa,0,sizeof(client[cs_idx].udp_sa));
265 client[cs_idx].udp_sa.sin_family = AF_INET;
266 client[cs_idx].udp_sa.sin_port = htons((u_short)reader[client[cs_idx].ridx].r_port);
267
268 cs_log("radegast: proxy %s:%d (fd=%d)",
269 reader[client[cs_idx].ridx].device, reader[client[cs_idx].ridx].r_port, client[cs_idx].udp_fd);
270
271 handle = network_tcp_connection_open();
272 if(handle < 0) return -1;
273
274 reader[client[cs_idx].ridx].tcp_connected = 2;
275 reader[client[cs_idx].ridx].card_status = CARD_INSERTED;
276 reader[client[cs_idx].ridx].last_g = reader[client[cs_idx].ridx].last_s = time((time_t *)0);
277
278 cs_debug("radegast: last_s=%d, last_g=%d", reader[client[cs_idx].ridx].last_s, reader[client[cs_idx].ridx].last_g);
279
280 client[cs_idx].pfd=client[cs_idx].udp_fd;
281
282 return(0);
283}
284
285void module_radegast(struct s_module *ph)
286{
287 static PTAB ptab;
288 ptab.ports[0].s_port = cfg->rad_port;
289 ph->ptab = &ptab;
290 ph->ptab->nports = 1;
291
292 strcpy(ph->desc, "radegast");
293 ph->type=MOD_CONN_TCP;
294 ph->multi=0;
295 ph->watchdog=1;
296 ph->s_ip=cfg->rad_srvip;
297 ph->s_handler=radegast_server;
298 ph->recv=radegast_recv;
299 ph->send_dcw=radegast_send_dcw;
300 ph->c_multi=0;
301 ph->c_init=radegast_cli_init;
302 ph->c_recv_chk=radegast_recv_chk;
303 ph->c_send_ecm=radegast_send_ecm;
304 ph->num=R_RADEGAST;
305}
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