vbox.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** answering machine port                                                    **
   9 **                                                                           **
  10 ** this is a child of the port class, which emulates the recorder function   **
  11 ** of an answering machine                                                   **
  12 ** it will directly answer to the setup message with a connect               **
  13 **                                                                           **
  14 \*****************************************************************************/
  15
  16 #include <stdio.h>
  17 #include <string.h>
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <poll.h>
  21 #include <errno.h>
  22 #include <sys/ioctl.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <fcntl.h>
  26 #include "main.h"
  27
  28 /* note: recording log is written at endpoint */
  29
  30 /*
  31  * initialize vbox port
  32  */
  33 VBoxPort::VBoxPort(int type, struct port_settings *settings) : Port(type, "vbox", settings)
  34 {
  35         p_vbox_timeout = 0;
  36         p_vbox_announce_fh = -1;
  37         p_vbox_audio_start = 0;
  38         p_vbox_audio_transferred = 0;
  39         p_vbox_record_start = 0;
  40         p_vbox_record_limit = 0;
  41 }
  42
  43
  44 /*
  45  * destructor
  46  */
  47 VBoxPort::~VBoxPort()
  48 {
  49         if (p_vbox_announce_fh >= 0)
  50         {
  51                 close(p_vbox_announce_fh);
  52                 p_vbox_announce_fh = -1;
  53                 fhuse--;
  54         }
  55 }
  56
  57
  58 /*
  59  * handler of vbox
  60  */
  61 int VBoxPort::handler(void)
  62 {
  63         struct message  *message;
  64         unsigned long   tosend;
  65         signed short    buffer[128];
  66         time_t          currenttime;
  67         class Endpoint  *epoint;
  68         int             ret;
  69
  70         if ((ret = Port::handler()))
  71                 return(ret);
  72
  73         if (p_vbox_record_start && p_vbox_record_limit)
  74         {
  75                 time(&currenttime);
  76                 if (currenttime > (p_vbox_record_limit+p_vbox_record_start))
  77                 {
  78                         while(p_epointlist)
  79                         {
  80                                 /* send release */
  81                                 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
  82                                 message->param.disconnectinfo.cause = 16;
  83                                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
  84                                 message_put(message);
  85                                 /* remove epoint */
  86                                 free_epointlist(p_epointlist);
  87                         }
  88                         /* recording is close during destruction */
  89                         delete this;
  90                         return(-1); /* must return because port is gone */
  91                 }
  92         }
  93
  94         if (p_vbox_audio_start < 1)
  95         {
  96                 /* set time the first time */
  97                 p_vbox_audio_start = now_d;
  98         } else
  99         {
 100                 /* calculate the number of bytes */
 101                 tosend = (unsigned long)((now_d-p_vbox_audio_start)*8000) - p_vbox_audio_transferred;
 102
 103                 /* wait for more */
 104                 if (tosend < 32)
 105                         return(Port::handler());
 106
 107                 /* too many samples, so we just process 128 bytes until the next call of handler() */
 108                 if (tosend > 128)
 109                         tosend = 128;
 110
 111                 /* dummy read, to clock record buffer */
 112                 read_audio((unsigned char *)buffer, tosend, 0);
 113
 114                 /* add the number of samples elapsed */
 115                 p_vbox_audio_transferred += tosend;
 116
 117                 /* if announcement is currently played, send audio data */
 118                 if (p_vbox_announce_fh >=0)
 119                 {
 120                         tosend = read_tone(p_vbox_announce_fh, buffer, p_vbox_announce_codec, tosend, p_vbox_announce_size, &p_vbox_announce_left, 1);
 121                         if (tosend <= 0)
 122                         {
 123                                 /* end of file */
 124                                 close(p_vbox_announce_fh);
 125                                 p_vbox_announce_fh = -1;
 126                                 fhuse--;
 127
 128                                 time(&currenttime);
 129                                 p_vbox_record_start = currenttime;
 130
 131                                 /* connect if not already */
 132                                 epoint = find_epoint_id(ACTIVE_EPOINT(p_epointlist));
 133                                 if (epoint)
 134                                 {
 135                                         /* if we sent our announcement during ringing, we must now connect */
 136                                         if (p_vbox_apppbx->e_ext.vbox_free)
 137                                         {
 138                                                 /* send connect message */
 139                                                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CONNECT);
 140                                                 memcpy(&message->param.connectinfo, &p_connectinfo, sizeof(struct connect_info));
 141                                                 message_put(message);
 142                                                 new_state(PORT_STATE_CONNECT);
 143                                         }
 144                                 }
 145
 146                                 /* start recording, if not already */
 147                                 if (p_vbox_mode == VBOX_MODE_NORMAL)
 148                                 {
 149                                         /* send recording start message */
 150                                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_VBOX_RECORD);
 151                                         message_put(message);
 152                                 } else // else!!
 153                                 if (p_vbox_mode == VBOX_MODE_ANNOUNCEMENT)
 154                                 {
 155                                         /* send release */
 156                                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
 157                                         message->param.disconnectinfo.cause = 16;
 158                                         message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 159                                         message_put(message);
 160                                         /* recording is close during destruction */
 161                                         delete this;
 162                                         return(-1); /* must return because port is gone */
 163                                 }
 164                         } else
 165                         {
 166                                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_DATA);
 167                                 message->param.data.port_type = p_type;
 168                                 message->param.data.port_id = p_serial;
 169                                 message->param.data.len = tosend;
 170                                 memcpy(message->param.data.data, buffer, tosend);
 171                                 message_put(message);
 172                         }
 173                 }
 174
 175         }
 176         return(1);
 177 }
 178
 179
 180 /*
 181  * endpoint sends messages to the vbox port
 182  */
 183 int VBoxPort::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
 184 {
 185         struct message *message;
 186         class Endpoint *epoint;
 187         char filename[256], *c;
 188         class EndpointAppPBX *eapp;
 189
 190         if (Port::message_epoint(epoint_id, message_id, param))
 191                 return(1);
 192
 193         epoint = find_epoint_id(epoint_id);
 194         if (!epoint)
 195         {
 196                 PDEBUG(DEBUG_EPOINT|DEBUG_VBOX, "PORT(%s) no endpoint object found where the message is from.\n", p_name);
 197                 return(0);
 198         }
 199
 200         switch(message_id)
 201         {
 202                 case MESSAGE_DISCONNECT: /* call has been disconnected */
 203                 PDEBUG(DEBUG_VBOX, "PORT(%s) vbox port with (caller id %s) received disconnect cause=%d\n", p_name, p_callerinfo.id, param->disconnectinfo.cause);
 204
 205                 new_state(PORT_STATE_OUT_DISCONNECT);
 206
 207                 while(p_epointlist)
 208                 {
 209                         message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 210                         message->param.disconnectinfo.cause = CAUSE_NORMAL;
 211                         message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 212                         message_put(message);
 213                         /* remove epoint */
 214                         free_epointlist(p_epointlist);
 215                 }
 216                 /* recording is close during destruction */
 217                 delete this;
 218                 return(-1); /* must return because port is gone */
 219                 break;
 220
 221                 case MESSAGE_RELEASE: /* release vbox port */
 222                 PDEBUG(DEBUG_VBOX, "PORT(%s) vbox port with (caller id %s) received release\n", p_name, p_callerinfo.id);
 223
 224                 /* we are done */
 225                 /* recording is close during destruction */
 226                 delete this;
 227                 return(-1); /* must return because port is gone */
 228                 break;
 229
 230                 case MESSAGE_SETUP: /* dial-out command received from epoint, answer with connect */
 231                 /* get apppbx */
 232                 eapp = (class EndpointAppPBX *)(epoint->ep_app);
 233                 p_vbox_apppbx = eapp;
 234                 /* extract optional announcement file */
 235                 if ((c = strchr(param->setup.dialinginfo.number, ',')))
 236                 {
 237                         if (c[1] == '/')
 238                                 SPRINT(filename, c+1);
 239                         else
 240                                 SPRINT(filename, "%s/%s/%s/vbox/%s", INSTALL_DATA, options.extensions_dir, p_vbox_apppbx->e_terminal);
 241                         *c = '\0';
 242                 } else
 243                 {
 244                         SPRINT(filename, "%s/%s/%s/vbox/announcement", INSTALL_DATA, options.extensions_dir, p_vbox_apppbx->e_terminal);
 245                 }
 246                 PDEBUG(DEBUG_VBOX, "PORT(%s) vbox port received setup from '%s' to '%s'\n", p_name, param->setup.callerinfo.id, param->setup.dialinginfo.number);
 247                 memcpy(&p_callerinfo, &param->setup.callerinfo, sizeof(p_callerinfo));
 248                 memcpy(&p_redirinfo, &param->setup.redirinfo, sizeof(p_redirinfo));
 249                 /* link relation */
 250                 if (p_epointlist)
 251                 {
 252                         PERROR("PORT(%s) software error: epoint pointer is set in idle state, how bad!! exitting.\n", p_name);
 253                         exit(-1);
 254                 }
 255                 if (!(epointlist_new(epoint_id)))
 256                 {
 257                         PERROR("no memory for epointlist\n");
 258                         exit(-1);
 259                 }
 260
 261                 /* copy setup infos to port */
 262                 SCPY(p_vbox_extension, param->setup.dialinginfo.number);
 263
 264                 /* create connect info */
 265                 SCPY(p_connectinfo.id, p_vbox_extension);
 266                 p_connectinfo.itype = INFO_ITYPE_VBOX;
 267                 p_connectinfo.present = INFO_PRESENT_ALLOWED;
 268                 p_connectinfo.screen = INFO_SCREEN_NETWORK;
 269
 270                 /* connect unless we can send announcement while ringing */
 271                 if (!p_vbox_apppbx->e_ext.vbox_free)
 272                 {
 273                         /* send connect message */
 274                         message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_CONNECT);
 275                         memcpy(&message->param.connectinfo, &p_connectinfo, sizeof(struct connect_info));
 276                         message_put(message);
 277                         new_state(PORT_STATE_CONNECT);
 278                 } else
 279                 {
 280                         /* send alerting message */
 281                         message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_ALERTING);
 282                         message_put(message);
 283                         new_state(PORT_STATE_IN_ALERTING);
 284                 }
 285
 286                 /* start recording during announcement */
 287                 /* start parallel recording if desired */
 288                 p_vbox_mode = p_vbox_apppbx->e_ext.vbox_mode;
 289                 p_vbox_record_limit = p_vbox_apppbx->e_ext.vbox_time;
 290                 if (p_vbox_mode == VBOX_MODE_PARALLEL)
 291                 {
 292                         /* send recording start message */
 293                         message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_VBOX_RECORD);
 294                         message_put(message);
 295                 }
 296                 /* play the announcement */
 297                 if ((p_vbox_announce_fh = open_tone(filename, &p_vbox_announce_codec, &p_vbox_announce_size, &p_vbox_announce_left)) >= 0)
 298                 {
 299                         fhuse++;
 300                 } else
 301                 {
 302                         PDEBUG(DEBUG_VBOX, "PORT(%s) no announcement found at: '%s' so we start recording now.\n", p_name, filename);
 303                         /* send recording start message */
 304                         message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_VBOX_RECORD);
 305                         message_put(message);
 306                 }
 307                 break;
 308
 309                 default:
 310                 PDEBUG(DEBUG_VBOX, "PORT(%s) vbox port with (caller id %s) received an unsupported message: %d\n", p_name, p_callerinfo.id, message_id);
 311         }
 312
 313         return(0);
 314 }
 315
 316