message.h

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** Linux Call Router                                                         **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** message types and parameters                                              **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #define ISDN_TRANSMIT   256 // samples
  13
  14 enum { /* interface types */
  15         INFO_ITYPE_ISDN,
  16         INFO_ITYPE_ISDN_EXTENSION, /* call from internal extension */
  17         INFO_ITYPE_CHAN,
  18         INFO_ITYPE_VBOX
  19 };
  20
  21 enum { /* number types */
  22         INFO_NTYPE_UNKNOWN = 0,
  23         INFO_NTYPE_SUBSCRIBER,
  24         INFO_NTYPE_NATIONAL,
  25         INFO_NTYPE_INTERNATIONAL
  26 };
  27
  28 enum { /* number presentation */
  29         INFO_PRESENT_NULL = 0,
  30         INFO_PRESENT_ALLOWED,
  31         INFO_PRESENT_RESTRICTED,
  32         INFO_PRESENT_NOTAVAIL
  33 };
  34
  35 enum { /* number presentation */
  36         INFO_SCREEN_USER, /* user provided */
  37         INFO_SCREEN_NETWORK /* network provided */
  38 };
  39
  40 enum { /* redirection reason */
  41         INFO_REDIR_UNKNOWN = 0,
  42         INFO_REDIR_BUSY,
  43         INFO_REDIR_NORESPONSE,
  44         INFO_REDIR_UNCONDITIONAL,
  45         INFO_REDIR_OUTOFORDER,
  46         INFO_REDIR_CALLDEFLECT
  47 };
  48
  49 #define INFO_NOTIFY_NONE                        0x00
  50 #define INFO_NOTIFY_USER_SUSPENDED              0x80
  51 #define INFO_NOTIFY_USER_RESUMED                0x81
  52 #define INFO_NOTIFY_BEARER_SERVICE_CHANGED      0x82
  53 #define INFO_NOTIFY_CALL_COMPLETION_DELAY       0x83
  54 #define INFO_NOTIFY_CONFERENCE_ESTABLISHED      0xc2
  55 #define INFO_NOTIFY_CONFERENCE_DISCONNECTED     0xc3
  56 #define INFO_NOTIFY_OTHER_PARTY_ADDED           0xc4
  57 #define INFO_NOTIFY_ISOLATED                    0xc5
  58 #define INFO_NOTIFY_REATTACHED                  0xc6
  59 #define INFO_NOTIFY_OTHER_PARTY_ISOLATED        0xc7
  60 #define INFO_NOTIFY_OTHER_PARTY_REATTACHED      0xc8
  61 #define INFO_NOTIFY_OTHER_PARTY_SPLIT           0xc9
  62 #define INFO_NOTIFY_OTHER_PARTY_DISCONNECTED    0xca
  63 #define INFO_NOTIFY_CONFERENCE_FLOATING         0xcb
  64 #define INFO_NOTIFY_CONFERENCE_DISCONNECTED_P   0xcc /* preemted */
  65 #define INFO_NOTIFY_CONFERENCE_FLOATING_S_U_P   0xcf /* served user preemted */
  66 #define INFO_NOTIFY_CALL_IS_A_WAITING_CALL      0xe0
  67 #define INFO_NOTIFY_DIVERSION_ACTIVATED         0xe8
  68 #define INFO_NOTIFY_RESERVED_CT_1               0xe9
  69 #define INFO_NOTIFY_RESERVED_CT_2               0xea
  70 #define INFO_NOTIFY_REVERSE_CHARGING            0xee
  71 #define INFO_NOTIFY_REMOTE_HOLD                 0xf9
  72 #define INFO_NOTIFY_REMOTE_RETRIEVAL            0xfa
  73 #define INFO_NOTIFY_CALL_IS_DIVERTING           0xfb
  74
  75 enum { /* diversion types */
  76         INFO_DIVERSION_CFU,
  77         INFO_DIVERSION_CFNR,
  78         INFO_DIVERSION_CFB,
  79         INFO_DIVERSION_CFP,
  80 };
  81
  82 /* bearer capabilities */
  83 #define INFO_BC_SPEECH                                  0x00
  84 #define INFO_BC_DATAUNRESTRICTED                        0x08
  85 #define INFO_BC_DATARESTRICTED                          0x09
  86 #define INFO_BC_AUDIO                                   0x10
  87 #define INFO_BC_DATAUNRESTRICTED_TONES                  0x11
  88 #define INFO_BC_VIDEO                                   0x18
  89
  90 /* bearer mode */
  91 #define INFO_BMODE_CIRCUIT                              0
  92 #define INFO_BMODE_PACKET                               2
  93
  94 /* bearer user l1 */
  95 #define INFO_INFO1_NONE                                 0x00
  96 #define INFO_INFO1_V110                                 0x81
  97 #define INFO_INFO1_ULAW                                 0x82
  98 #define INFO_INFO1_ALAW                                 0x83
  99 #define INFO_INFO1_G721                                 0x84
 100 #define INFO_INFO1_H221H242                             0x85
 101 #define INFO_INFO1_NONCCITT                             0x87
 102 #define INFO_INFO1_V120                                 0x88
 103 #define INFO_INFO1_X31HDLC                              0x89
 104
 105 /* hlc */
 106 #define INFO_HLC_NONE                                   0x00
 107 #define INFO_HLC_TELEPHONY                              0x81
 108 #define INFO_HLC_FAXG2G3                                0x84
 109 #define INFO_HLC_FAXG4                                  0xa1
 110 #define INFO_HLC_TELETEX1                               0xa4
 111 #define INFO_HLC_TELETEX2                               0xa8
 112 #define INFO_HLC_TELETEX3                               0xb1
 113 #define INFO_HLC_VIDEOTEX1                              0xb2
 114 #define INFO_HLC_VIDEOTEX2                              0xb3
 115 #define INFO_HLC_TELEX                                  0xb5
 116 #define INFO_HLC_MHS                                    0xb8
 117 #define INFO_HLC_OSI                                    0xc1
 118 #define INFO_HLC_MAINTENANCE                            0xde
 119 #define INFO_HLC_MANAGEMENT                             0xdf
 120 #define INFO_HLC_AUDIOVISUAL                            0xe0
 121
 122 enum { /* isdnsignal */
 123         mISDNSIGNAL_VOLUME,             /* change volume */
 124         mISDNSIGNAL_CONF,               /* joint/split conference */
 125         mISDNSIGNAL_JOINDATA,           /* data required by join instance */
 126         mISDNSIGNAL_ECHO,               /* enable/disable echoe */
 127         mISDNSIGNAL_DELAY,              /* use delay or adaptive jitter */
 128 };
 129
 130 enum { /* bchannel assignment */
 131         BCHANNEL_REQUEST,               /* application requests bchannel */
 132         BCHANNEL_RELEASE,               /* application releases bchannel */
 133         BCHANNEL_ASSIGN,                /* bchannel assigned by LCR */
 134         BCHANNEL_ASSIGN_ACK,            /* application acknowledges */
 135         BCHANNEL_REMOVE,                /* bchannel removed by LCR */
 136         BCHANNEL_REMOVE_ACK,            /* application acknowledges */
 137 };
 138 enum {
 139         B_STATE_IDLE,           /* not open */
 140         B_STATE_ACTIVATING,     /* DL_ESTABLISH sent */
 141         B_STATE_ACTIVE,         /* channel active */
 142         B_STATE_DEACTIVATING,   /* DL_RELEASE sent */
 143         B_STATE_EXPORTING,      /* BCHANNEL_ASSIGN sent */
 144         B_STATE_REMOTE,         /* bchannel assigned to remote application */
 145         B_STATE_IMPORTING,      /* BCHANNEL_REMOVE sent */
 146 };
 147 enum {
 148         B_MODE_TRANSPARENT,     /* normal transparent audio */
 149         B_MODE_HDLC,            /* hdlc data mode */
 150 };
 151
 152 /* call-info structure CALLER */
 153 struct caller_info {
 154         char id[32];                    /* id of caller (user number) */
 155         char extension[32];             /* internal id */
 156         char name[16];
 157         int isdn_port;                  /* internal/external port (if call is isdn) */
 158         char interface[32];             /* interface name the call was from */
 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 DIALING */
 167 struct dialing_info {
 168         char id[256];                   /* number dialing (so far) */
 169         char interfaces[128];           /* interfaces for extenal calls */
 170         int itype;                      /* type of interface */
 171         int ntype;                      /* type of number */
 172         int sending_complete;           /* end of dialing */
 173         char display[84];               /* display information */
 174 };
 175
 176 /* call-info structure CONNECT */
 177 struct connect_info {
 178         char id[32];                    /* id of caller (user number) */
 179         char extension[32];             /* internal id */
 180         char name[16];
 181         int isdn_port;                  /* internal/external port (if call is isdn) */
 182         char interface[128];            /* interface for extenal calls */
 183         int itype;                      /* type of interface */
 184         int ntype;                      /* type of number */
 185         int present;                    /* presentation */
 186         int screen;                     /* who provided the number */
 187         char display[84];               /* display information */
 188 };
 189
 190 /* call-info structure DISCONNECT */
 191 struct disconnect_info {
 192         int cause;                      /* reason for disconnect */
 193         int location;                   /* disconnect location */
 194         char display[84];               /* optional display information */
 195 };
 196
 197 /* call-info structure REDIR */
 198 struct redir_info {
 199         char id[32];                    /* id of caller (user number) */
 200         char extension[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;                    /* presentation */
 205         int screen;                     /* who provided the number */
 206         int reason;                     /* reason for redirecing */
 207 };
 208
 209 /* call-info structure capability */
 210 struct capa_info {
 211         int source_mode;                /* forward mode */
 212         int bearer_capa;                /* capability */
 213         int bearer_mode;                /* circuit/packet */
 214         int bearer_info1;               /* alaw,ulaw,... */
 215         int hlc;                        /* hlc capability */
 216         int exthlc;                     /* extendet hlc */
 217 };
 218
 219 /* call-info structure NOTIFY */
 220 struct notify_info {
 221         int notify;                     /* notifications (see INFO_NOTIFY_*) */
 222         char id[32];                    /* redirection id (user number) */
 223         char extension[32];             /* internal id */
 224         int isdn_port;                  /* internal/external port (if call is isdn) */
 225         int itype;                      /* type of interface */
 226         int ntype;                      /* type of number */
 227         int present;                    /* redirection presentation */
 228         char display[84];               /* display information */
 229         int local;                      /* if set, endpoints gets information about audio channel (open/close) */
 230 };
 231
 232 /* call-info structure FACILITY */
 233 struct facility_info {
 234         char data[256];                 /* data info about facility */
 235         int len;                        /* length of facility content */
 236 };
 237
 238 /* call-info structure USERUSER */
 239 struct useruser_info {
 240         int protocol;
 241         int len;
 242         unsigned char data[128];        /* user-user info (not a sting!)*/
 243 };
 244
 245 /* call-info structure SETUP */
 246 struct message_setup {
 247         int isdn_port; /* card number 1...n (only on calls from isdn port) */
 248         int port_type; /* type of port (only required if message is port -> epoint) */
 249         int partyline; /* if set, call will be a conference room */
 250         int partyline_jingle; /* if set, the jingle will be played on conference join */
 251         struct caller_info callerinfo;          /* information about the caller */
 252         struct dialing_info dialinginfo;        /* information about dialing */
 253         struct redir_info redirinfo;            /* info on redirection (to the calling user) */
 254         struct capa_info capainfo;              /* info on l2,l3 capability */
 255         struct useruser_info useruser;          /* user-user */
 256         char context[128];                      /* asterisk context */
 257 };
 258
 259 /* call-info structure PARK */
 260 struct park_info {
 261         char callid[8];
 262         int len;
 263 };
 264
 265 /* DATA */
 266 struct param_data {
 267         unsigned char data[ISDN_TRANSMIT]; /* audio/hdlc data */
 268         int len; /* audio/hdlc data */
 269 };
 270
 271 struct param_play {
 272         char file[512]; /* file name */
 273         int offset; /* offset to start file at (in seconds) */
 274 };
 275
 276 struct param_tone {
 277         char dir[128]; /* directory */
 278         char name[128]; /* file name */
 279 };
 280
 281 struct param_counter {
 282         int current; /* current counter in seconds */
 283         int max; /* total size of file (0=no info) */
 284 };
 285
 286 struct param_mISDNsignal {
 287         int message;
 288         int tx_gain;
 289         int rx_gain;
 290         int conf;
 291         int joindata;
 292         int tone;
 293         int echo;
 294         int delay;
 295 };
 296
 297 /* encryption control structure CRYPT */
 298 struct param_crypt {
 299         int type; /* see messages in crypt.h */
 300         int len;
 301         unsigned char data[512+32]; /* a block of 512 byte + some overhead */
 302 };
 303
 304 struct param_hello {
 305         char application[32]; /* name of remote application */
 306 };
 307
 308 struct param_bchannel {
 309         int type; /* BCHANNEL_* */
 310         unsigned int handle; /* bchannel stack/portid */
 311         int tx_gain, rx_gain;
 312         char pipeline[256];
 313         unsigned char crypt[128];
 314         int crypt_len;
 315         int crypt_type; /* 1 = blowfish */
 316 };
 317
 318 /* structure of message parameter */
 319 union parameter {
 320         struct param_tone tone; /* MESSAGE_TONE */
 321         char dtmf; /* MESSAGE_DTMF */
 322         struct message_setup setup; /* MESSAGE_SETUP */
 323         struct dialing_info information; /* MESSAGE_INFO */
 324         struct connect_info connectinfo; /* CONNECT INFO */
 325         struct disconnect_info disconnectinfo; /* DISCONNECT INFO */
 326         struct notify_info notifyinfo; /* some notifications */
 327         struct facility_info facilityinfo; /* some notifications */
 328         struct park_info parkinfo; /* MESSAGE_SUSPEND, MESSAGE_RESUME */
 329         int state; /* MESSAGE_TIMEOUT */
 330         int knock; /* MESSAGE_KNOCK 0=off !0=on */
 331         int audiopath; /* MESSAGE_audiopath see RELATION_CHANNEL_* (join.h) */
 332         struct param_data data; /* MESSAGE_DATA */
 333         struct param_play play; /* MESSAGE_VBOX_PLAY */
 334         int speed; /* MESSAGE_VBOX_PLAY_SPEED */
 335         struct param_counter counter; /* MESSAGE_TONE_COUNTER */
 336         struct param_mISDNsignal mISDNsignal; /* MESSAGE_mISDNSIGNAL */
 337         struct extension ext; /* tell port about extension information */
 338         struct param_crypt crypt; /* MESSAGE_CRYPT */
 339         struct param_hello hello; /* MESSAGE_HELLO */
 340         struct param_bchannel bchannel; /* MESSAGE_BCHANNEL */
 341         int direction; /* MESSAGE_NEWREF */
 342 };
 343
 344 enum { /* message flow */
 345         PORT_TO_EPOINT,
 346         EPOINT_TO_JOIN,
 347         JOIN_TO_EPOINT,
 348         EPOINT_TO_PORT,
 349 };
 350
 351 /* message structure */
 352 struct lcr_msg {
 353         struct lcr_msg *next;
 354         int type; /* type of message */
 355         int flow; /* from where to where */
 356         unsigned int id_from; /* in case of flow==PORT_TO_EPOINT: id_from is the port's serial, id_to is the epoint's serial */
 357         unsigned int id_to;
 358         int keep;
 359         union parameter param;
 360 };
 361
 362 enum { /* messages between entities */
 363         MESSAGE_NONE,           /* no message */
 364         MESSAGE_TONE,           /* set information tone (to isdn port) */
 365         MESSAGE_DTMF,           /* dtmf digit (from isdn port) */
 366         MESSAGE_ENABLEKEYPAD,   /* remote application requests keypad/dtmf */
 367         MESSAGE_mISDNSIGNAL,    /* special mixer command (down to isdn port) */
 368         MESSAGE_SETUP,          /* setup message */
 369         MESSAGE_INFORMATION,    /* additional digit information */
 370         MESSAGE_OVERLAP,        /* call accepted, send more information */
 371         MESSAGE_PROCEEDING,     /* proceeding */
 372         MESSAGE_ALERTING,       /* ringing */
 373         MESSAGE_CONNECT,        /* connect */
 374         MESSAGE_DISCONNECT,     /* disconnect with cause */
 375         MESSAGE_RELEASE,        /* release with cause */
 376         MESSAGE_TIMEOUT,        /* protocol state has timed out (port->epoint) */
 377         MESSAGE_NOTIFY,         /* used to send progress and notify infos */
 378         MESSAGE_FACILITY,       /* used to facility infos, like aocd */
 379         MESSAGE_SUSPEND,        /* suspend port */
 380         MESSAGE_RESUME,         /* resume port */
 381         MESSAGE_AUDIOPATH,      /* set status of audio path to endpoint (to call, audio is also set) */
 382 //      MESSAGE_REMOTE_AUDIO,   /* tell remote to set audio status */
 383         MESSAGE_PATTERN,        /* pattern information tones available */
 384         MESSAGE_NOPATTERN,      /* pattern information tones unavailable */
 385         MESSAGE_CRYPT,          /* encryption message */
 386         MESSAGE_DATA,           /* audio/hdlc data */
 387         MESSAGE_VBOX_PLAY,      /* play recorded file */
 388         MESSAGE_VBOX_PLAY_SPEED,/* change speed of file */
 389         MESSAGE_VBOX_TONE,      /* set answering VBOX tone */
 390         MESSAGE_TONE_COUNTER,   /* tone counter (for VBOX tone use) */
 391         MESSAGE_TONE_EOF,       /* tone is end of file */
 392         MESSAGE_BCHANNEL,       /* request/assign/remove bchannel */
 393         MESSAGE_HELLO,          /* hello message for remote application */
 394         MESSAGE_NEWREF,         /* special message to create and inform ref */
 395 };
 396
 397 #define MESSAGES static const char *messages_txt[] = { \
 398         "MESSAGE_NONE", \
 399         "MESSAGE_TONE", \
 400         "MESSAGE_DTMF", \
 401         "MESSAGE_ENABLEKEYPAD", \
 402         "MESSAGE_mISDNSIGNAL", \
 403         "MESSAGE_SETUP", \
 404         "MESSAGE_INFORMATION", \
 405         "MESSAGE_OVERLAP", \
 406         "MESSAGE_PROCEEDING", \
 407         "MESSAGE_ALERTING", \
 408         "MESSAGE_CONNECT", \
 409         "MESSAGE_DISCONNECT", \
 410         "MESSAGE_RELEASE", \
 411         "MESSAGE_TIMEOUT", \
 412         "MESSAGE_NOTIFY", \
 413         "MESSAGE_FACILITY", \
 414         "MESSAGE_SUSPEND", \
 415         "MESSAGE_RESUME", \
 416         "MESSAGE_AUDIOPATH", \
 417 /*      "MESSAGE_REMOTE_AUDIO",*/ \
 418         "MESSAGE_PATTERN", \
 419         "MESSAGE_NOPATTERN", \
 420         "MESSAGE_CRYPT", \
 421         "MESSAGE_DATA", \
 422         "MESSAGE_VBOX_PLAY", \
 423         "MESSAGE_VBOX_PLAY_SPEED", \
 424         "MESSAGE_VBOX_TONE", \
 425         "MESSAGE_TONE_COUNTER", \
 426         "MESSAGE_TONE_EOF", \
 427         "MESSAGE_BCHANNEL", \
 428         "MESSAGE_HELLO", \
 429         "MESSAGE_NEWREF", \
 430 };
 431
 432
 433 struct lcr_msg *message_create(int id_from, int id_to, int flow, int type);
 434 void message_put(struct lcr_msg *message);
 435 struct lcr_msg *message_forward(int id_from, int id_to, int flow, union parameter *param);
 436 struct lcr_msg *message_get(void);
 437 void message_free(struct lcr_msg *message);
 438
 439
 440