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
  84                 new_state(PORT_STATE_OUT_SETUP);
  85                 break;
  86
  87         case MESSAGE_PROCEEDING:
  88                 new_state(PORT_STATE_IN_PROCEEDING);
  89                 break;
  90
  91         case MESSAGE_ALERTING:
  92                 new_state(PORT_STATE_IN_ALERTING);
  93                 break;
  94
  95         case MESSAGE_CONNECT:
  96                 new_state(PORT_STATE_CONNECT);
  97                 break;
  98
  99         case MESSAGE_DISCONNECT:
 100                 new_state(PORT_STATE_OUT_DISCONNECT);
 101                 break;
 102
 103         case MESSAGE_RELEASE:
 104                 new_state(PORT_STATE_RELEASE);
 105                 break;
 106         }
 107
 108         /* look for Remote's interface */
 109         if (admin_message_from_lcr(p_r_remote_id, p_r_ref, message_type, param)<0) {
 110                 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);
 111                 return 0;
 112         }
 113
 114         if (message_type == MESSAGE_RELEASE) {
 115                 new_state(PORT_STATE_RELEASE);
 116                 delete this;
 117                 return 0;
 118         }
 119
 120         return 0;
 121 }
 122
 123 void Premote::message_remote(int message_type, union parameter *param)
 124 {
 125         class Endpoint *epoint;
 126         struct lcr_msg *message;
 127         struct interface *interface;
 128
 129         switch (message_type) {
 130         case MESSAGE_TRAFFIC:
 131                 bridge_tx(param->traffic.data, param->traffic.len);
 132                 break;
 133
 134         case MESSAGE_SETUP:
 135                 interface = getinterfacebyname(p_interface_name);
 136                 if (!interface) {
 137                         PERROR("Cannot find interface %s.\n", p_interface_name);
 138                         return;
 139                 }
 140
 141                 /* enable audio path */
 142                 if (interface->is_tones == IS_YES) {
 143                         union parameter newparam;
 144                         memset(&newparam, 0, sizeof(union parameter));
 145                         admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_PATTERN, &newparam);
 146                         newparam.audiopath = 1;
 147                         admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_AUDIOPATH, &newparam);
 148                 }
 149
 150                 /* set source interface */
 151                 param->setup.callerinfo.itype = p_callerinfo.itype;
 152                 SCPY(param->setup.callerinfo.interface, interface->name);
 153
 154                 /* create endpoint */
 155                 if (p_epointlist)
 156                         FATAL("Incoming call but already got an endpoint.\n");
 157                 if (!(epoint = new Endpoint(p_serial, 0)))
 158                         FATAL("No memory for Endpoint instance\n");
 159                 epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
 160
 161                 epointlist_new(epoint->ep_serial);
 162
 163                 new_state(PORT_STATE_IN_SETUP);
 164                 break;
 165
 166         case MESSAGE_PROCEEDING:
 167                 new_state(PORT_STATE_OUT_PROCEEDING);
 168                 break;
 169
 170         case MESSAGE_ALERTING:
 171                 new_state(PORT_STATE_OUT_ALERTING);
 172                 break;
 173
 174         case MESSAGE_CONNECT:
 175                 new_state(PORT_STATE_CONNECT);
 176                 break;
 177
 178         case MESSAGE_DISCONNECT:
 179                 new_state(PORT_STATE_IN_DISCONNECT);
 180                 break;
 181
 182         case MESSAGE_RELEASE:
 183                 new_state(PORT_STATE_RELEASE);
 184                 break;
 185         }
 186
 187         /* cannot just forward, because param is not of container "struct lcr_msg" */
 188         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, message_type);
 189         memcpy(&message->param, param, sizeof(message->param));
 190         message_put(message);
 191
 192         if (message_type == MESSAGE_RELEASE) {
 193                 new_state(PORT_STATE_RELEASE);
 194                 delete this;
 195                 return;
 196         }
 197 }
 198
 199 /* receive from remote Port instance */
 200 int Premote::bridge_rx(unsigned char *data, int len)
 201 {
 202         union parameter newparam;
 203         int l;
 204
 205         /* don't send tones, if not enabled or not connected */
 206         if (!p_r_tones
 207          && p_state != PORT_STATE_CONNECT)
 208                 return 0;
 209
 210         memset(&newparam, 0, sizeof(union parameter));
 211         /* split, if exeeds data size */
 212         while(len) {
 213                 l = (len > (int)sizeof(newparam.traffic.data)) ? sizeof(newparam.traffic.data) : len;
 214                 newparam.traffic.len = l;
 215                 len -= l;
 216                 memcpy(newparam.traffic.data, data, l);
 217                 data += l;
 218                 admin_message_from_lcr(p_r_remote_id, p_r_ref, MESSAGE_TRAFFIC, &newparam);
 219         }
 220
 221         return 0;
 222 }
 223
 224