message.h

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** Linux Call Router                                                         **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** message types and parameters                                              **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 enum { /* interface types */
  13         INFO_ITYPE_ISDN,
  14         INFO_ITYPE_ISDN_EXTENSION, /* call from internal extension */
  15         INFO_ITYPE_CHAN,
  16         INFO_ITYPE_VBOX,
  17 };
  18
  19 enum { /* number types */
  20         INFO_NTYPE_UNKNOWN,
  21         INFO_NTYPE_SUBSCRIBER,
  22         INFO_NTYPE_NATIONAL,
  23         INFO_NTYPE_INTERNATIONAL,
  24 };
  25
  26 enum { /* number presentation */
  27         INFO_PRESENT_NULL,
  28         INFO_PRESENT_ALLOWED,
  29         INFO_PRESENT_RESTRICTED,
  30         INFO_PRESENT_NOTAVAIL,
  31 };
  32
  33 enum { /* number presentation */
  34         INFO_SCREEN_USER, /* user provided */
  35         INFO_SCREEN_NETWORK, /* network provided */
  36 };
  37
  38 enum { /* redirection reason */
  39         INFO_REDIR_UNKNOWN,
  40         INFO_REDIR_BUSY,
  41         INFO_REDIR_NORESPONSE,
  42         INFO_REDIR_UNCONDITIONAL,
  43         INFO_REDIR_OUTOFORDER,
  44         INFO_REDIR_CALLDEFLECT,
  45 };
  46
  47 #define INFO_NOTIFY_NONE                        0x00
  48 #define INFO_NOTIFY_USER_SUSPENDED              0x80
  49 #define INFO_NOTIFY_USER_RESUMED                0x81
  50 #define INFO_NOTIFY_BEARER_SERVICE_CHANGED      0x82
  51 #define INFO_NOTIFY_CALL_COMPLETION_DELAY       0x83
  52 #define INFO_NOTIFY_CONFERENCE_ESTABLISHED      0xc2
  53 #define INFO_NOTIFY_CONFERENCE_DISCONNECTED     0xc3
  54 #define INFO_NOTIFY_OTHER_PARTY_ADDED           0xc4
  55 #define INFO_NOTIFY_ISOLATED                    0xc5
  56 #define INFO_NOTIFY_REATTACHED                  0xc6
  57 #define INFO_NOTIFY_OTHER_PARTY_ISOLATED        0xc7
  58 #define INFO_NOTIFY_OTHER_PARTY_REATTACHED      0xc8
  59 #define INFO_NOTIFY_OTHER_PARTY_SPLIT           0xc9
  60 #define INFO_NOTIFY_OTHER_PARTY_DISCONNECTED    0xca
  61 #define INFO_NOTIFY_CONFERENCE_FLOATING         0xcb
  62 #define INFO_NOTIFY_CONFERENCE_DISCONNECTED_P   0xcc /* preemted */
  63 #define INFO_NOTIFY_CONFERENCE_FLOATING_S_U_P   0xcf /* served user preemted */
  64 #define INFO_NOTIFY_CALL_IS_A_WAITING_CALL      0xe0
  65 #define INFO_NOTIFY_DIVERSION_ACTIVATED         0xe8
  66 #define INFO_NOTIFY_RESERVED_CT_1               0xe9
  67 #define INFO_NOTIFY_RESERVED_CT_2               0xea
  68 #define INFO_NOTIFY_REVERSE_CHARGING            0xee
  69 #define INFO_NOTIFY_REMOTE_HOLD                 0xf9
  70 #define INFO_NOTIFY_REMOTE_RETRIEVAL            0xfa
  71 #define INFO_NOTIFY_CALL_IS_DIVERTING           0xfb
  72
  73 enum { /* diversion types */
  74         INFO_DIVERSION_CFU,
  75         INFO_DIVERSION_CFNR,
  76         INFO_DIVERSION_CFB,
  77         INFO_DIVERSION_CFP,
  78 };
  79
  80 /* bearer capabilities */
  81 #define INFO_BC_SPEECH                                  0x00
  82 #define INFO_BC_DATAUNRESTRICTED                        0x08
  83 #define INFO_BC_DATARESTRICTED                          0x09
  84 #define INFO_BC_AUDIO                                   0x10
  85 #define INFO_BC_DATAUNRESTRICTED_TONES                  0x11
  86 #define INFO_BC_VIDEO                                   0x18
  87
  88 /* bearer mode */
  89 #define INFO_BMODE_CIRCUIT                              0
  90 #define INFO_BMODE_PACKET                               2
  91
  92 /* bearer user l1 */
  93 #define INFO_INFO1_NONE                                 0x00
  94 #define INFO_INFO1_V110                                 0x81
  95 #define INFO_INFO1_ULAW                                 0x82
  96 #define INFO_INFO1_ALAW                                 0x83
  97 #define INFO_INFO1_G721                                 0x84
  98 #define INFO_INFO1_H221H242                             0x85
  99 #define INFO_INFO1_NONCCITT                             0x87
 100 #define INFO_INFO1_V120                                 0x88
 101 #define INFO_INFO1_X31HDLC                              0x89
 102
 103 /* hlc */
 104 #define INFO_HLC_NONE                                   0x00
 105 #define INFO_HLC_TELEPHONY                              0x81
 106 #define INFO_HLC_FAXG2G3                                0x84
 107 #define INFO_HLC_FAXG4                                  0xa1
 108 #define INFO_HLC_TELETEX1                               0xa4
 109 #define INFO_HLC_TELETEX2                               0xa8
 110 #define INFO_HLC_TELETEX3                               0xb1
 111 #define INFO_HLC_VIDEOTEX1                              0xb2
 112 #define INFO_HLC_VIDEOTEX2                              0xb3
 113 #define INFO_HLC_TELEX                                  0xb5
 114 #define INFO_HLC_MHS                                    0xb8
 115 #define INFO_HLC_OSI                                    0xc1
 116 #define INFO_HLC_MAINTENANCE                            0xde
 117 #define INFO_HLC_MANAGEMENT                             0xdf
 118 #define INFO_HLC_AUDIOVISUAL                            0xe0
 119
 120 enum { /* isdnsignal */
 121         mISDNSIGNAL_VOLUME,
 122         mISDNSIGNAL_CONF,
 123         mISDNSIGNAL_NODATA,             /* no data required */
 124         mISDNSIGNAL_ECHO,
 125 };
 126
 127 /* call-info structure CALLER */
 128 struct caller_info {
 129         char id[32];                    /* id of caller (user number) */
 130         char extension[32];             /* internal id */
 131         char name[16];
 132         int isdn_port;                  /* internal/external port (if call is isdn) */
 133         char interface[32];             /* interface name the call was from */
 134         int itype;                      /* type of interface */
 135         int ntype;                      /* type of number */
 136         int present;                    /* presentation */
 137         int screen;                     /* who provided the number */
 138         char display[84];               /* display information */
 139 };
 140
 141 /* call-info structure DIALING */
 142 struct dialing_info {
 143         char number[256];               /* number dialing (so far) */
 144         char interfaces[128];           /* interfaces for extenal calls */
 145         int itype;                      /* type of interface */
 146         int ntype;                      /* type of number */
 147         int sending_complete;           /* end of dialing */
 148 };
 149
 150 /* call-info structure CONNECT */
 151 struct connect_info {
 152         char id[32];                    /* id of caller (user number) */
 153         char voip[64];                  /* URI of voip (or gateway) */
 154         char intern[32];                /* internal id */
 155         char name[16];
 156         int isdn_port;                  /* internal/external port (if call is isdn) */
 157         char interfaces[128];           /* interfaces for extenal calls */
 158         int itype;                      /* type of interface */
 159         int ntype;                      /* type of number */
 160         int present;                    /* presentation */
 161         int screen;                     /* who provided the number */
 162         char display[84];               /* display information */
 163 };
 164
 165 /* call-info structure DISCONNECT */
 166 struct disconnect_info {
 167         int cause;                      /* reason for disconnect */
 168         int location;                   /* disconnect location */
 169         char display[84];               /* optional display information */
 170 };
 171
 172 /* call-info structure REDIR */
 173 struct redir_info {
 174         char id[32];                    /* id of caller (user number) */
 175         char voip[64];                  /* host of voip (or gateway) */
 176         char intern[32];                /* internal id */
 177         int isdn_port;                  /* internal/external port (if call is isdn) */
 178         int itype;                      /* type of interface */
 179         int ntype;                      /* type of number */
 180         int present;                    /* presentation */
 181         int screen;                     /* who provided the number */
 182         int reason;                     /* reason for redirecing */
 183 };
 184
 185 /* call-info structure capability */
 186 struct capa_info {
 187         int bearer_capa;                /* capability */
 188         int bearer_mode;                /* circuit/packet */
 189         int bearer_info1;               /* alaw,ulaw,... */
 190         int hlc;                        /* hlc capability */
 191         int exthlc;                     /* extendet hlc */
 192 };
 193
 194 /* call-info structure NOTIFY */
 195 struct notify_info {
 196         int notify;                     /* notifications (see INFO_NOTIFY_*) */
 197         char id[32];                    /* redirection id (user number) */
 198         char voip[64];                  /* host of voip (or gateway) */
 199         char intern[32];                /* internal id */
 200         int isdn_port;                  /* internal/external port (if call is isdn) */
 201         int itype;                      /* type of interface */
 202         int ntype;                      /* type of number */
 203         int present;                    /* redirection presentation */
 204         char display[84];               /* display information */
 205         int local;                      /* if set, endpoints gets information about audio channel (open/close) */
 206 };
 207
 208 /* call-info structure FACILITY */
 209 struct facility_info {
 210         char data[256];                 /* data info about facility */
 211         int len;                        /* length of facility content */
 212 };
 213
 214 /* call-info structure USERUSER */
 215 struct useruser_info {
 216         int protocol;
 217         int len;
 218         unsigned char data[128];        /* user-user info (not a sting!)*/
 219 };
 220
 221 /* call-info structure SETUP */
 222 struct message_setup {
 223         int isdn_port; /* card number 1...n (only on calls from isdn port) */
 224         int port_type; /* type of port (only required if message is port -> epoint) */
 225         int dtmf; /* used to enabled dtmf dialing at setup state */
 226         int partyline; /* if set, call will be a conference room */
 227         struct caller_info callerinfo;          /* information about the caller */
 228         struct dialing_info dialinginfo;        /* information about dialing */
 229         struct redir_info redirinfo;            /* info on redirection (to the calling user) */
 230         struct capa_info capainfo;              /* info on l2,l3 capability */
 231         struct useruser_info useruser;          /* user-user */
 232 };
 233
 234 /* call-info structure PARK */
 235 struct park_info {
 236         char callid[8];
 237         int len;
 238 };
 239
 240 /* DATA */
 241 struct param_data {
 242         unsigned char data[512]; /* audio/hdlc data */
 243         int len; /* audio/hdlc data */
 244         int compressed; /* 0 for law-data, 1 for 16-bit data */
 245         unsigned long port_id; /* to identify the source of this data */
 246         int port_type; /* type of the source's port  */
 247 };
 248
 249 struct param_play {
 250         char file[512]; /* file name */
 251         int offset; /* offset to start file at (in seconds) */
 252 };
 253
 254 struct param_tone {
 255         char dir[128]; /* directory */
 256         char name[128]; /* file name */
 257 };
 258
 259 struct param_counter {
 260         int current; /* current counter in seconds */
 261         int max; /* total size of file (0=no info) */
 262 };
 263
 264 struct param_mISDNsignal {
 265         int message;
 266         int rxvol;
 267         int txvol;
 268         int conf;
 269         int nodata;
 270         int tone;
 271         int echo;
 272 };
 273
 274 /* encryption control structure CRYPT */
 275 struct param_crypt {
 276         int type; /* see messages in crypt.h */
 277         int len;
 278         unsigned char data[512+32]; /* a block of 512 byte + some overhead */
 279 };
 280
 281 /* structure of message parameter */
 282 union parameter {
 283         struct param_tone tone; /* MESSAGE_TONE */
 284         char dtmf; /* MESSAGE_DTMF */
 285         struct message_setup setup; /* MESSAGE_SETUP */
 286         struct dialing_info information; /* MESSAGE_INFO */
 287         struct connect_info connectinfo; /* CONNECT INFO */
 288         struct disconnect_info disconnectinfo; /* DISCONNECT INFO */
 289         struct notify_info notifyinfo; /* some notifications */
 290         struct facility_info facilityinfo; /* some notifications */
 291         struct park_info parkinfo; /* MESSAGE_SUSPEND, MESSAGE_RESUME */
 292         int state; /* MESSAGE_TIMEOUT */
 293         int knock; /* MESSAGE_KNOCK 0=off !0=on */
 294         int channel; /* MESSAGE_CHANNEL see RELATION_CHANNEL_* (call.h) */
 295         struct param_data data; /* MESSAGE_DATA */
 296         struct param_play play; /* MESSAGE_VBOX_PLAY */
 297         int speed; /* MESSAGE_VBOX_PLAY_SPEED */
 298         struct param_counter counter; /* MESSAGE_TONE_COUNTER */
 299         struct param_mISDNsignal mISDNsignal; /* MESSAGE_mISDNSIGNAL */
 300         struct extension ext; /* tell port about extension information */
 301         struct param_crypt crypt; /* MESSAGE_CRYPT */
 302 };
 303
 304 enum { /* message flow */
 305         PORT_TO_EPOINT,
 306         EPOINT_TO_CALL,
 307         CALL_TO_EPOINT,
 308         EPOINT_TO_PORT,
 309 };
 310
 311 /* message structure */
 312 struct message {
 313         struct message *next;
 314         int type; /* type of message */
 315         int flow; /* from where to where */
 316         unsigned long id_from; /* in case of flow==PORT_TO_EPOINT: id_from is the port's serial, id_to is the epoint's serial */
 317         unsigned long id_to;
 318         union parameter param;
 319 };
 320
 321 enum { /* messages between entities */
 322         MESSAGE_NONE,           /* no message */
 323         MESSAGE_TONE,           /* set information tone (to isdn port) */
 324         MESSAGE_DTMF,           /* dtmf digit (from isdn port) */
 325         MESSAGE_mISDNSIGNAL,    /* special mixer command (down to isdn port) */
 326
 327         MESSAGE_SETUP,          /* setup message */
 328         MESSAGE_INFORMATION,    /* additional digit information */
 329         MESSAGE_OVERLAP,        /* call accepted, send more information */
 330         MESSAGE_PROCEEDING,     /* proceeding */
 331         MESSAGE_ALERTING,       /* ringing */
 332         MESSAGE_CONNECT,        /* connect */
 333         MESSAGE_DISCONNECT,     /* disconnect with cause */
 334         MESSAGE_RELEASE,        /* release with cause */
 335         MESSAGE_TIMEOUT,        /* protocol state has timed out (port->epoint) */
 336         MESSAGE_NOTIFY,         /* used to send progress and notify infos */
 337         MESSAGE_FACILITY,       /* used to facility infos, like aocd */
 338
 339         MESSAGE_SUSPEND,        /* suspend port */
 340         MESSAGE_RESUME,         /* resume port */
 341
 342         MESSAGE_CHANNEL,        /* set status of audio path to endpoint (to call, audio is also set) */
 343 //      MESSAGE_REMOTE_AUDIO,   /* tell remote to set audio status */
 344         MESSAGE_PATTERN,        /* pattern information tones available */
 345         MESSAGE_NOPATTERN,      /* pattern information tones unavailable */
 346         MESSAGE_CRYPT,          /* encryption message */
 347
 348         MESSAGE_DATA,           /* audio/hdlc data */
 349
 350         MESSAGE_VBOX_PLAY,      /* play recorded file */
 351         MESSAGE_VBOX_PLAY_SPEED,/* change speed of file */
 352         MESSAGE_VBOX_TONE,      /* set answering VBOX tone */
 353         MESSAGE_TONE_COUNTER,   /* tone counter (for VBOX tone use) */
 354         MESSAGE_TONE_EOF,       /* tone is end of file */
 355         MESSAGE_VBOX_RECORD,    /* tell endpoint to start recording */
 356 };
 357
 358 #define MESSAGES static const char *messages_txt[] = { \
 359         "MESSAGE_NONE", \
 360         "MESSAGE_TONE", \
 361         "MESSAGE_DTMF", \
 362         "MESSAGE_mISDNSIGNAL", \
 363         "MESSAGE_SETUP", \
 364         "MESSAGE_INFORMATION", \
 365         "MESSAGE_OVERLAP", \
 366         "MESSAGE_PROCEEDING", \
 367         "MESSAGE_ALERTING", \
 368         "MESSAGE_CONNECT", \
 369         "MESSAGE_DISCONNECT", \
 370         "MESSAGE_RELEASE", \
 371         "MESSAGE_TIMEOUT", \
 372         "MESSAGE_NOTIFY", \
 373         "MESSAGE_FACILITY", \
 374         "MESSAGE_SUSPEND", \
 375         "MESSAGE_RESUME", \
 376         "MESSAGE_CHANNEL", \
 377 /*      "MESSAGE_REMOTE_AUDIO",*/ \
 378         "MESSAGE_PATTERN", \
 379         "MESSAGE_NOPATTERN", \
 380         "MESSAGE_CRYPT", \
 381         "MESSAGE_DATA", \
 382         "MESSAGE_VBOX_PLAY", \
 383         "MESSAGE_VBOX_PLAY_SPEED", \
 384         "MESSAGE_VBOX_TONE", \
 385         "MESSAGE_TONE_COUNTER", \
 386         "MESSAGE_TONE_EOF", \
 387         "MESSAGE_VBOX_RECORD", \
 388 };
 389
 390
 391 struct message *message_create(int id_from, int id_to, int flow, int type);
 392 void message_put(struct message *message);
 393 struct message *message_get(void);
 394 void message_free(struct message *message);
 395
 396
 397