remote.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** LCR                                                                       **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** mISDN remote                                                              **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13
  14 unsigned int new_remote = 1000;
  15
  16 /*
  17  * constructor
  18  */
  19 Premote::Premote(int type, char *portname, struct port_settings *settings, struct interface *interface, int remote_id) : Port(type, portname, settings, interface)
  20 {
  21         union parameter param;
  22
  23         p_callerinfo.itype = (interface->extension)?INFO_ITYPE_ISDN_EXTENSION:INFO_ITYPE_ISDN;
  24         p_r_ref = new_remote++;
  25         SCPY(p_r_remote_app, interface->remote_app);
  26         p_r_tones = (interface->is_tones == IS_YES);
  27
  28         /* send new ref to remote socket */
  29         memset(&param, 0, sizeof(union parameter));
  30         if (type == PORT_TYPE_REMOTE_OUT)
  31                 param.newref.direction = 1; /* new ref from lcr */
  32         p_r_remote_id = remote_id;
  33         if (admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_NEWREF, &param) < 0)
  34                 FATAL("No socket with remote application '%s' found, this shall not happen. because we already created one.\n", p_r_remote_app);
  35
  36         PDEBUG(DEBUG_PORT, "Created new RemotePort(%s).\n", portname);
  37
  38 }
  39
  40 /*
  41  * destructor
  42  */
  43 Premote::~Premote()
  44 {
  45         PDEBUG(DEBUG_PORT, "Destroyed Remote process(%s).\n", p_name);
  46 }
  47
  48 /*
  49  * endpoint sends messages to the port
  50  */
  51 int Premote::message_epoint(unsigned int epoint_id, int message_type, union parameter *param)
  52 {
  53         struct epoint_list *epointlist;
  54
  55         if (Port::message_epoint(epoint_id, message_type, param))
  56                 return 1;
  57
  58         switch (message_type) {
  59         case MESSAGE_SETUP:
  60                 struct interface *interface;
  61                 interface = getinterfacebyname(p_interface_name);
  62                 if (!interface) {
  63                         PERROR("Cannot find interface %s.\n", p_interface_name);
  64                         return 0;
  65                 }
  66                 /* attach only if not already */
  67                 epointlist = p_epointlist;
  68                 while(epointlist) {
  69                         if (epointlist->epoint_id == epoint_id)
  70                                 break;
  71                         epointlist = epointlist->next;
  72                 }
  73                 if (!epointlist)
  74                         epointlist_new(epoint_id);
  75
  76                 /* set context to pbx */
  77                 if (!param->setup.dialinginfo.context[0]) {
  78                         if (interface->remote_context[0])
  79                                 SCPY(param->setup.dialinginfo.context, interface->remote_context);
  80                         else
  81                                 SCPY(param->setup.dialinginfo.context, "lcr");
  82                 }
  83                 /* screen */
  84                 memcpy(&p_callerinfo, &param->setup.callerinfo, sizeof(p_callerinfo));
  85                 memcpy(&p_redirinfo, &param->setup.redirinfo, sizeof(p_redirinfo));
  86                 do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_interface_name);
  87                 do_screen(1, p_callerinfo.id2, sizeof(p_callerinfo.id2), &p_callerinfo.ntype2, &p_callerinfo.present2, p_interface_name);
  88                 do_screen(1, p_redirinfo.id, sizeof(p_redirinfo.id), &p_redirinfo.ntype, &p_redirinfo.present, p_interface_name);
  89                 memcpy(&param->setup.callerinfo, &p_callerinfo, sizeof(p_callerinfo));
  90                 memcpy(&param->setup.redirinfo, &p_redirinfo, sizeof(p_redirinfo));
  91
  92                 new_state(PORT_STATE_OUT_SETUP);
  93                 break;
  94
  95         case MESSAGE_PROCEEDING:
  96                 new_state(PORT_STATE_IN_PROCEEDING);
  97                 break;
  98
  99         case MESSAGE_ALERTING:
 100                 new_state(PORT_STATE_IN_ALERTING);
 101                 break;
 102
 103         case MESSAGE_CONNECT:
 104                 new_state(PORT_STATE_CONNECT);
 105                 break;
 106
 107         case MESSAGE_DISCONNECT:
 108                 new_state(PORT_STATE_OUT_DISCONNECT);
 109                 break;
 110
 111         case MESSAGE_RELEASE:
 112                 new_state(PORT_STATE_RELEASE);
 113                 break;
 114         }
 115
 116         /* look for Remote's interface */
 117         if (admin_message_from_lcr(p_r_remote_id, p_r_ref, message_type, param)<0) {
 118                 PERROR("No socket with remote application '%s' found, this shall not happen. Closing socket shall cause release of all remote ports.\n", p_r_remote_app);
 119                 return 0;
 120         }
 121
 122         if (message_type == MESSAGE_RELEASE) {
 123                 new_state(PORT_STATE_RELEASE);
 124                 delete this;
 125                 return 0;
 126         }
 127
 128         return 0;
 129 }
 130
 131 void Premote::message_remote(int message_type, union parameter *param)
 132 {
 133         class Endpoint *epoint;
 134         struct lcr_msg *message;
 135         struct interface *interface;
 136
 137         switch (message_type) {
 138         case MESSAGE_TRAFFIC:
 139                 bridge_tx(param->traffic.data, param->traffic.len);
 140                 if (p_tone_name[0]) {
 141                         read_audio(param->traffic.data, param->traffic.len);
 142                         admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_TRAFFIC, param);
 143                 }
 144                 break;
 145
 146         case MESSAGE_SETUP:
 147                 interface = getinterfacebyname(p_interface_name);
 148                 if (!interface) {
 149                         PERROR("Cannot find interface %s.\n", p_interface_name);
 150                         return;
 151                 }
 152
 153                 /* enable audio path */
 154                 if (interface->is_tones == IS_YES) {
 155                         union parameter newparam;
 156                         memset(&newparam, 0, sizeof(union parameter));
 157                         admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_PATTERN, &newparam);
 158                         newparam.audiopath = 1;
 159                         admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_AUDIOPATH, &newparam);
 160                 }
 161
 162                 /* set source interface */
 163                 param->setup.callerinfo.itype = p_callerinfo.itype;
 164                 SCPY(param->setup.callerinfo.interface, interface->name);
 165
 166                 /* create endpoint */
 167                 if (p_epointlist)
 168                         FATAL("Incoming call but already got an endpoint.\n");
 169                 if (!(epoint = new Endpoint(p_serial, 0)))
 170                         FATAL("No memory for Endpoint instance\n");
 171                 epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
 172
 173                 epointlist_new(epoint->ep_serial);
 174
 175                 new_state(PORT_STATE_IN_SETUP);
 176                 break;
 177
 178         case MESSAGE_PROCEEDING:
 179                 new_state(PORT_STATE_OUT_PROCEEDING);
 180                 break;
 181
 182         case MESSAGE_ALERTING:
 183                 new_state(PORT_STATE_OUT_ALERTING);
 184                 break;
 185
 186         case MESSAGE_CONNECT:
 187                 new_state(PORT_STATE_CONNECT);
 188                 break;
 189
 190         case MESSAGE_DISCONNECT:
 191                 new_state(PORT_STATE_IN_DISCONNECT);
 192                 break;
 193
 194         case MESSAGE_RELEASE:
 195                 new_state(PORT_STATE_RELEASE);
 196                 break;
 197         }
 198
 199         /* cannot just forward, because param is not of container "struct lcr_msg" */
 200         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, message_type);
 201         memcpy(&message->param, param, sizeof(message->param));
 202         message_put(message);
 203
 204         if (message_type == MESSAGE_RELEASE) {
 205                 new_state(PORT_STATE_RELEASE);
 206                 delete this;
 207                 return;
 208         }
 209 }
 210
 211 /* receive from remote Port instance */
 212 int Premote::bridge_rx(unsigned char *data, int len)
 213 {
 214         union parameter newparam;
 215         int l;
 216
 217         /* don't send tones, if not enabled or not connected */
 218         if (!p_r_tones
 219          && p_state != PORT_STATE_CONNECT)
 220                 return 0;
 221
 222         if (p_tone_name[0])
 223                 return 0;
 224
 225         memset(&newparam, 0, sizeof(union parameter));
 226         /* split, if exeeds data size */
 227         while(len) {
 228                 l = (len > (int)sizeof(newparam.traffic.data)) ? sizeof(newparam.traffic.data) : len;
 229                 newparam.traffic.len = l;
 230                 len -= l;
 231                 memcpy(newparam.traffic.data, data, l);
 232                 data += l;
 233                 admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_TRAFFIC, &newparam);
 234         }
 235
 236         return 0;
 237 }
 238
 239