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