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,             /* change volume */
 122         mISDNSIGNAL_CONF,               /* joint/split conference */
 123         mISDNSIGNAL_CALLDATA,           /* data required by call instance */
 124         mISDNSIGNAL_ECHO,               /* enable/disable echoe */
 125         mISDNSIGNAL_DELAY,              /* use delay or adaptive jitter */
 126 };
 127
 128 /* call-info structure CALLER */
 129 struct caller_info {
 130         char id[32];                    /* id of caller (user number) */
 131         char extension[32];             /* internal id */
 132         char name[16];
 133         int isdn_port;                  /* internal/external port (if call is isdn) */
 134         char interface[32];             /* interface name the call was from */
 135         int itype;                      /* type of interface */
 136         int ntype;                      /* type of number */
 137         int present;                    /* presentation */
 138         int screen;                     /* who provided the number */
 139         char display[84];               /* display information */
 140 };
 141
 142 /* call-info structure DIALING */
 143 struct dialing_info {
 144         char number[256];               /* number dialing (so far) */
 145         char interfaces[128];           /* interfaces for extenal calls */
 146         int itype;                      /* type of interface */
 147         int ntype;                      /* type of number */
 148         int sending_complete;           /* end of dialing */
 149 };
 150
 151 /* call-info structure CONNECT */
 152 struct connect_info {
 153         char id[32];                    /* id of caller (user number) */
 154         char voip[64];                  /* URI of voip (or gateway) */
 155         char extension[32];             /* internal id */
 156         char name[16];
 157         int isdn_port;                  /* internal/external port (if call is isdn) */
 158         char interfaces[128];           /* interfaces for extenal calls */
 159         int itype;                      /* type of interface */
 160         int ntype;                      /* type of number */
 161         int present;                    /* presentation */
 162         int screen;                     /* who provided the number */
 163         char display[84];               /* display information */
 164 };
 165
 166 /* call-info structure DISCONNECT */
 167 struct disconnect_info {
 168         int cause;                      /* reason for disconnect */
 169         int location;                   /* disconnect location */
 170         char display[84];               /* optional display information */
 171 };
 172
 173 /* call-info structure REDIR */
 174 struct redir_info {
 175         char id[32];                    /* id of caller (user number) */
 176         char voip[64];                  /* host of voip (or gateway) */
 177         char intern[32];                /* internal id */
 178         int isdn_port;                  /* internal/external port (if call is isdn) */
 179         int itype;                      /* type of interface */
 180         int ntype;                      /* type of number */
 181         int present;                    /* presentation */
 182         int screen;                     /* who provided the number */
 183         int reason;                     /* reason for redirecing */
 184 };
 185
 186 /* call-info structure capability */
 187 struct capa_info {
 188         int bearer_capa;                /* capability */
 189         int bearer_mode;                /* circuit/packet */
 190         int bearer_info1;               /* alaw,ulaw,... */
 191         int hlc;                        /* hlc capability */
 192         int exthlc;                     /* extendet hlc */
 193 };
 194
 195 /* call-info structure NOTIFY */
 196 struct notify_info {
 197         int notify;                     /* notifications (see INFO_NOTIFY_*) */
 198         char id[32];                    /* redirection id (user number) */
 199         char voip[64];                  /* host of voip (or gateway) */
 200         char intern[32];                /* internal id */
 201         int isdn_port;                  /* internal/external port (if call is isdn) */
 202         int itype;                      /* type of interface */
 203         int ntype;                      /* type of number */
 204         int present;                    /* redirection presentation */
 205         char display[84];               /* display information */
 206         int local;                      /* if set, endpoints gets information about audio channel (open/close) */
 207 };
 208
 209 /* call-info structure FACILITY */
 210 struct facility_info {
 211         char data[256];                 /* data info about facility */
 212         int len;                        /* length of facility content */
 213 };
 214
 215 /* call-info structure USERUSER */
 216 struct useruser_info {
 217         int protocol;
 218         int len;
 219         unsigned char data[128];        /* user-user info (not a sting!)*/
 220 };
 221
 222 /* call-info structure SETUP */
 223 struct message_setup {
 224         int isdn_port; /* card number 1...n (only on calls from isdn port) */
 225         int port_type; /* type of port (only required if message is port -> epoint) */
 226         int dtmf; /* used to enabled dtmf dialing at setup state */
 227         int partyline; /* if set, call will be a conference room */
 228         struct caller_info callerinfo;          /* information about the caller */
 229         struct dialing_info dialinginfo;        /* information about dialing */
 230         struct redir_info redirinfo;            /* info on redirection (to the calling user) */
 231         struct capa_info capainfo;              /* info on l2,l3 capability */
 232         struct useruser_info useruser;          /* user-user */
 233 };
 234
 235 /* call-info structure PARK */
 236 struct park_info {
 237         char callid[8];
 238         int len;
 239 };
 240
 241 /* DATA */
 242 struct param_data {
 243         unsigned char data[512]; /* audio/hdlc data */
 244         int len; /* audio/hdlc data */
 245 };
 246
 247 struct param_play {
 248         char file[512]; /* file name */
 249         int offset; /* offset to start file at (in seconds) */
 250 };
 251
 252 struct param_tone {
 253         char dir[128]; /* directory */
 254         char name[128]; /* file name */
 255 };
 256
 257 struct param_counter {
 258         int current; /* current counter in seconds */
 259         int max; /* total size of file (0=no info) */
 260 };
 261
 262 struct param_mISDNsignal {
 263         int message;
 264         int rxvol;
 265         int txvol;
 266         int conf;
 267         int calldata;
 268         int tone;
 269         int echo;
 270         int delay;
 271 };
 272
 273 /* encryption control structure CRYPT */
 274 struct param_crypt {
 275         int type; /* see messages in crypt.h */
 276         int len;
 277         unsigned char data[512+32]; /* a block of 512 byte + some overhead */
 278 };
 279
 280 /* structure of message parameter */
 281 union parameter {
 282         struct param_tone tone; /* MESSAGE_TONE */
 283         char dtmf; /* MESSAGE_DTMF */
 284         struct message_setup setup; /* MESSAGE_SETUP */
 285         struct dialing_info information; /* MESSAGE_INFO */
 286         struct connect_info connectinfo; /* CONNECT INFO */
 287         struct disconnect_info disconnectinfo; /* DISCONNECT INFO */
 288         struct notify_info notifyinfo; /* some notifications */
 289         struct facility_info facilityinfo; /* some notifications */
 290         struct park_info parkinfo; /* MESSAGE_SUSPEND, MESSAGE_RESUME */
 291         int state; /* MESSAGE_TIMEOUT */
 292         int knock; /* MESSAGE_KNOCK 0=off !0=on */
 293         int channel; /* MESSAGE_CHANNEL see RELATION_CHANNEL_* (call.h) */
 294         struct param_data data; /* MESSAGE_DATA */
 295         struct param_play play; /* MESSAGE_VBOX_PLAY */
 296         int speed; /* MESSAGE_VBOX_PLAY_SPEED */
 297         struct param_counter counter; /* MESSAGE_TONE_COUNTER */
 298         struct param_mISDNsignal mISDNsignal; /* MESSAGE_mISDNSIGNAL */
 299         struct extension ext; /* tell port about extension information */
 300         struct param_crypt crypt; /* MESSAGE_CRYPT */
 301 };
 302
 303 enum { /* message flow */
 304         PORT_TO_EPOINT,
 305         EPOINT_TO_CALL,
 306         CALL_TO_EPOINT,
 307         EPOINT_TO_PORT,
 308 };
 309
 310 /* message structure */
 311 struct message {
 312         struct message *next;
 313         int type; /* type of message */
 314         int flow; /* from where to where */
 315         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 */
 316         unsigned long id_to;
 317         union parameter param;
 318 };
 319
 320 enum { /* messages between entities */
 321         MESSAGE_NONE,           /* no message */
 322         MESSAGE_TONE,           /* set information tone (to isdn port) */
 323         MESSAGE_DTMF,           /* dtmf digit (from isdn port) */
 324         MESSAGE_mISDNSIGNAL,    /* special mixer command (down to isdn port) */
 325
 326         MESSAGE_SETUP,          /* setup message */
 327         MESSAGE_INFORMATION,    /* additional digit information */
 328         MESSAGE_OVERLAP,        /* call accepted, send more information */
 329         MESSAGE_PROCEEDING,     /* proceeding */
 330         MESSAGE_ALERTING,       /* ringing */
 331         MESSAGE_CONNECT,        /* connect */
 332         MESSAGE_DISCONNECT,     /* disconnect with cause */
 333         MESSAGE_RELEASE,        /* release with cause */
 334         MESSAGE_TIMEOUT,        /* protocol state has timed out (port->epoint) */
 335         MESSAGE_NOTIFY,         /* used to send progress and notify infos */
 336         MESSAGE_FACILITY,       /* used to facility infos, like aocd */
 337
 338         MESSAGE_SUSPEND,        /* suspend port */
 339         MESSAGE_RESUME,         /* resume port */
 340
 341         MESSAGE_CHANNEL,        /* set status of audio path to endpoint (to call, audio is also set) */
 342 //      MESSAGE_REMOTE_AUDIO,   /* tell remote to set audio status */
 343         MESSAGE_PATTERN,        /* pattern information tones available */
 344         MESSAGE_NOPATTERN,      /* pattern information tones unavailable */
 345         MESSAGE_CRYPT,          /* encryption message */
 346
 347         MESSAGE_DATA,           /* audio/hdlc data */
 348
 349         MESSAGE_VBOX_PLAY,      /* play recorded file */
 350         MESSAGE_VBOX_PLAY_SPEED,/* change speed of file */
 351         MESSAGE_VBOX_TONE,      /* set answering VBOX tone */
 352         MESSAGE_TONE_COUNTER,   /* tone counter (for VBOX tone use) */
 353         MESSAGE_TONE_EOF,       /* tone is end of file */
 354 };
 355
 356 #define MESSAGES static const char *messages_txt[] = { \
 357         "MESSAGE_NONE", \
 358         "MESSAGE_TONE", \
 359         "MESSAGE_DTMF", \
 360         "MESSAGE_mISDNSIGNAL", \
 361         "MESSAGE_SETUP", \
 362         "MESSAGE_INFORMATION", \
 363         "MESSAGE_OVERLAP", \
 364         "MESSAGE_PROCEEDING", \
 365         "MESSAGE_ALERTING", \
 366         "MESSAGE_CONNECT", \
 367         "MESSAGE_DISCONNECT", \
 368         "MESSAGE_RELEASE", \
 369         "MESSAGE_TIMEOUT", \
 370         "MESSAGE_NOTIFY", \
 371         "MESSAGE_FACILITY", \
 372         "MESSAGE_SUSPEND", \
 373         "MESSAGE_RESUME", \
 374         "MESSAGE_CHANNEL", \
 375 /*      "MESSAGE_REMOTE_AUDIO",*/ \
 376         "MESSAGE_PATTERN", \
 377         "MESSAGE_NOPATTERN", \
 378         "MESSAGE_CRYPT", \
 379         "MESSAGE_DATA", \
 380         "MESSAGE_VBOX_PLAY", \
 381         "MESSAGE_VBOX_PLAY_SPEED", \
 382         "MESSAGE_VBOX_TONE", \
 383         "MESSAGE_TONE_COUNTER", \
 384         "MESSAGE_TONE_EOF", \
 385 };
 386
 387
 388 struct message *message_create(int id_from, int id_to, int flow, int type);
 389 void message_put(struct message *message);
 390 struct message *message_get(void);
 391 void message_free(struct message *message);
 392
 393
 394