1 | #include "globals.h"
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2 |
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3 | static int radegast_send(struct s_client * client, uchar *buf)
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4 | {
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5 | int l=buf[1]+2;
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6 | return(send(client->pfd, buf, l, 0));
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7 | }
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8 |
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9 | static int radegast_recv(struct s_client *client, uchar *buf, int l)
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10 | {
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11 | int n;
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12 | if (!client->pfd) return(-1);
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13 | if (client->typ == 'c') { // server code
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14 | if ((n=recv(client->pfd, buf, l, 0))>0)
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15 | client->last=time((time_t *) 0);
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16 | } else { // client code
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17 | if ((n=recv(client->pfd, buf, l, 0))>0) {
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18 | cs_ddump_mask(D_CLIENT, buf, n, "radegast: received %d bytes from %s", n, remote_txt());
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19 | client->last = time((time_t *) 0);
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20 |
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21 | if (buf[0] == 2) { // dcw received
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22 | if (buf[3] != 0x10) { // dcw ok
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23 | cs_log("radegast: no dcw");
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24 | n = -1;
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25 | }
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26 | }
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27 | }
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28 | }
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29 | return(n);
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30 | }
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31 |
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32 | static int radegast_recv_chk(struct s_client *client, uchar *dcw, int *rc, uchar *buf, int UNUSED(n))
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33 | {
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34 | if ((buf[0] == 2) && (buf[1] == 0x12)) {
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35 | memcpy(dcw, buf+4, 16);
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36 | cs_debug_mask(D_CLIENT, "radegast: recv chk - %s", cs_hexdump(0, dcw, 16));
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37 | *rc = 1;
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38 | return(client->reader->msg_idx);
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39 | }
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40 |
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41 | return (-1);
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42 | }
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43 |
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44 | static void radegast_auth_client(in_addr_t ip)
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45 | {
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46 | int ok;
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47 | struct s_auth *account;
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48 | struct s_ip *p_ip;
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49 |
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50 | for (ok=0, p_ip=cfg->rad_allowed; (p_ip) && (!ok); p_ip=p_ip->next)
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51 | ok=((ip>=p_ip->ip[0]) && (ip<=p_ip->ip[1]));
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52 |
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53 | if (!ok)
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54 | {
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55 | cs_auth_client(cur_client(), (struct s_auth *)0, NULL);
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56 | cs_exit(0);
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57 | }
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58 |
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59 | for (ok=0, account=cfg->account; (cfg->rad_usr[0]) && (account) && (!ok); account=account->next)
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60 | {
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61 | ok=(!strcmp(cfg->rad_usr, account->usr));
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62 | if (ok && cs_auth_client(cur_client(), account, NULL))
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63 | cs_exit(0);
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64 | }
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65 |
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66 | if (!ok)
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67 | cs_auth_client(cur_client(), (struct s_auth *)(-1), NULL);
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68 | }
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69 |
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70 | static int get_request(uchar *buf)
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71 | {
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72 | int n, rc=0;
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73 | if ((n=process_input(buf, 2, cfg->cmaxidle))==2)
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74 | {
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75 | if ((n=process_input(buf+2, buf[1], 0))>=0)
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76 | n+=2;
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77 | if (n-2==buf[1])
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78 | rc=n;
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79 | else
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80 | cs_log("WARNING: protocol error (garbage)");
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81 | }
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82 | if (n>0)
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83 | {
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84 | cs_ddump_mask(D_CLIENT, buf, n, "received %d bytes from client", n);
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85 | }
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86 | return(rc);
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87 | }
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88 |
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89 | static void radegast_send_dcw(struct s_client *client, ECM_REQUEST *er)
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90 | {
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91 | uchar mbuf[1024];
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92 | mbuf[0]=0x02; // DCW
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93 | if (er->rc<4)
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94 | {
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95 | mbuf[1]=0x12; // len (overall)
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96 | mbuf[2]=0x05; // ACCESS
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97 | mbuf[3]=0x10; // len
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98 | memcpy(mbuf+4, er->cw, 16);
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99 | }
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100 | else
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101 | {
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102 | mbuf[1]=0x02; // len (overall)
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103 | mbuf[2]=0x04; // NO ACCESS
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104 | mbuf[3]=0x00; // len
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105 | }
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106 | radegast_send(client, mbuf);
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107 | }
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108 |
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109 | static void radegast_process_ecm(uchar *buf, int l)
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110 | {
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111 | int i, n, sl;
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112 | ECM_REQUEST *er;
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113 |
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114 | if (!(er=get_ecmtask()))
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115 | return;
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116 | for (i=0; i<l; i+=(sl+2))
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117 | {
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118 | sl=buf[i+1];
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119 | switch(buf[i])
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120 | {
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121 | case 2: // CAID (upper byte only, oldstyle)
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122 | er->caid=buf[i+2]<<8;
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123 | break;
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124 | case 10: // CAID
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125 | er->caid=b2i(2, buf+i+2);
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126 | break;
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127 | case 3: // ECM DATA
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128 | er->l=sl;
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129 | memcpy(er->ecm, buf+i+2, er->l);
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130 | break;
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131 | case 6: // PROVID (ASCII)
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132 | n=(sl>6) ? 3 : (sl>>1);
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133 | er->prid=cs_atoi((char *) buf+i+2+sl-(n<<1), n, 0);
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134 | break;
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135 | case 7: // KEYNR (ASCII), not needed
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136 | break;
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137 | case 8: // ECM PROCESS PID ?? don't know, not needed
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138 | break;
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139 | }
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140 | }
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141 | if (l!=i)
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142 | cs_log("WARNING: ECM-request corrupt");
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143 | else
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144 | get_cw(cur_client(), er);
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145 | }
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146 |
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147 | static void radegast_process_unknown(uchar *buf)
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148 | {
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149 | uchar answer[2]={0x81, 0x00};
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150 | radegast_send(cur_client(), answer);
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151 | cs_log("unknown request %02X, len=%d", buf[0], buf[1]);
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152 | }
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153 |
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154 | static void * radegast_server(void *cli)
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155 | {
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156 | int n;
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157 | uchar mbuf[1024];
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158 |
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159 | struct s_client * client = (struct s_client *) cli;
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160 | client->thread=pthread_self();
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161 | pthread_setspecific(getclient, cli);
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162 |
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163 | radegast_auth_client(cur_client()->ip);
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164 | while ((n=get_request(mbuf))>0)
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165 | {
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166 | switch(mbuf[0])
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167 | {
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168 | case 1:
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169 | radegast_process_ecm(mbuf+2, mbuf[1]);
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170 | break;
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171 | default:
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172 | radegast_process_unknown(mbuf);
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173 | }
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174 | }
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175 | cs_disconnect_client(client);
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176 | return NULL;
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177 | }
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178 |
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179 | static int radegast_send_ecm(struct s_client *client, ECM_REQUEST *er, uchar *UNUSED(buf))
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180 | {
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181 | int n;
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182 | uchar provid_buf[8];
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183 | 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";
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184 | uchar *ecmbuf = malloc(er->l + 30);
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185 | memset(ecmbuf, 0, er->l + 30);
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186 |
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187 | ecmbuf[0] = 1;
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188 | ecmbuf[1] = er->l + 30 - 2;
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189 | memcpy(ecmbuf + 2, header, sizeof(header));
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190 | for(n = 0; n < 4; n++) {
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191 | sprintf((char*)provid_buf+(n*2), "%02X", ((uchar *)(&er->prid))[4 - 1 - n]);
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192 | }
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193 | ecmbuf[7] = provid_buf[0];
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194 | ecmbuf[8] = provid_buf[1];
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195 | ecmbuf[9] = provid_buf[2];
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196 | ecmbuf[10] = provid_buf[3];
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197 | ecmbuf[11] = provid_buf[4];
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198 | ecmbuf[12] = provid_buf[5];
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199 | ecmbuf[13] = provid_buf[6];
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200 | ecmbuf[14] = provid_buf[7];
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201 | ecmbuf[2 + sizeof(header)] = 0xa;
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202 | ecmbuf[3 + sizeof(header)] = 2;
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203 | ecmbuf[4 + sizeof(header)] = er->caid >> 8;
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204 | ecmbuf[5 + sizeof(header)] = er->caid & 0xff;
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205 | ecmbuf[6 + sizeof(header)] = 3;
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206 | ecmbuf[7 + sizeof(header)] = er->l;
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207 | memcpy(ecmbuf + 8 + sizeof(header), er->ecm, er->l);
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208 | ecmbuf[4] = er->caid >> 8;
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209 |
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210 | client->reader->msg_idx = er->idx;
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211 | n = send(client->pfd, ecmbuf, er->l + 30, 0);
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212 |
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213 | cs_log("radegast: sending ecm");
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214 | cs_ddump_mask(D_CLIENT, ecmbuf, er->l + 30, "ecm:");
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215 |
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216 | free(ecmbuf);
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217 |
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218 | return 0;
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219 | }
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220 |
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221 | int radegast_cli_init(struct s_client *cl)
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222 | {
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223 | *cl = *cl; //prevent compiler warning
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224 | struct sockaddr_in loc_sa;
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225 | struct protoent *ptrp;
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226 | int p_proto, handle;
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227 |
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228 | cur_client()->pfd=0;
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229 | if (cur_client()->reader->r_port<=0)
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230 | {
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231 | cs_log("radegast: invalid port %d for server %s", cur_client()->reader->r_port, cur_client()->reader->device);
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232 | return(1);
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233 | }
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234 | if( (ptrp=getprotobyname("tcp")) )
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235 | p_proto=ptrp->p_proto;
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236 | else
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237 | p_proto=6;
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238 |
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239 | cur_client()->ip=0;
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240 | memset((char *)&loc_sa,0,sizeof(loc_sa));
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241 | loc_sa.sin_family = AF_INET;
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242 | #ifdef LALL
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243 | if (cfg->serverip[0])
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244 | loc_sa.sin_addr.s_addr = inet_addr(cfg->serverip);
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245 | else
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246 | #endif
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247 | loc_sa.sin_addr.s_addr = INADDR_ANY;
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248 | loc_sa.sin_port = htons(cur_client()->reader->l_port);
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249 |
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250 | if ((cur_client()->udp_fd=socket(PF_INET, SOCK_STREAM, p_proto))<0)
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251 | {
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252 | cs_log("radegast: Socket creation failed (errno=%d)", errno);
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253 | cs_exit(1);
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254 | }
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255 |
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256 | #ifdef SO_PRIORITY
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257 | if (cfg->netprio)
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258 | setsockopt(cur_client()->udp_fd, SOL_SOCKET, SO_PRIORITY,
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259 | (void *)&cfg->netprio, sizeof(ulong));
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260 | #endif
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261 | if (!cur_client()->reader->tcp_ito) {
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262 | ulong keep_alive = cur_client()->reader->tcp_ito?1:0;
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263 | setsockopt(cur_client()->udp_fd, SOL_SOCKET, SO_KEEPALIVE,
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264 | (void *)&keep_alive, sizeof(ulong));
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265 | }
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266 |
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267 | memset((char *)&cur_client()->udp_sa,0,sizeof(cur_client()->udp_sa));
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268 | cur_client()->udp_sa.sin_family = AF_INET;
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269 | cur_client()->udp_sa.sin_port = htons((u_short)cur_client()->reader->r_port);
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270 |
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271 | cs_log("radegast: proxy %s:%d (fd=%d)",
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272 | cur_client()->reader->device, cur_client()->reader->r_port, cur_client()->udp_fd);
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273 |
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274 | handle = network_tcp_connection_open();
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275 | if(handle < 0) return -1;
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276 |
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277 | cur_client()->reader->tcp_connected = 2;
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278 | cur_client()->reader->card_status = CARD_INSERTED;
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279 | cur_client()->reader->last_g = cur_client()->reader->last_s = time((time_t *)0);
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280 |
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281 | cs_debug_mask(D_CLIENT, "radegast: last_s=%d, last_g=%d", cur_client()->reader->last_s, cur_client()->reader->last_g);
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282 |
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283 | cur_client()->pfd=cur_client()->udp_fd;
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284 |
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285 | return(0);
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286 | }
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287 |
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288 | void module_radegast(struct s_module *ph)
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289 | {
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290 | static PTAB ptab; //since there is always only 1 radegast server running, this is threadsafe
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291 | ptab.ports[0].s_port = cfg->rad_port;
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292 | ph->ptab = &ptab;
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293 | ph->ptab->nports = 1;
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294 |
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295 | strcpy(ph->desc, "radegast");
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296 | ph->type=MOD_CONN_TCP;
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297 | ph->multi=0;
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298 | ph->watchdog=1;
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299 | ph->s_ip=cfg->rad_srvip;
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300 | ph->s_handler=radegast_server;
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301 | ph->recv=radegast_recv;
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302 | ph->send_dcw=radegast_send_dcw;
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303 | ph->c_multi=0;
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304 | ph->c_init=radegast_cli_init;
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305 | ph->c_recv_chk=radegast_recv_chk;
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306 | ph->c_send_ecm=radegast_send_ecm;
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307 | ph->num=R_RADEGAST;
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308 | }
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