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, /* call from external */
  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_NOTPRESENT = 0,
  21         INFO_NTYPE_UNKNOWN,
  22         INFO_NTYPE_SUBSCRIBER,
  23         INFO_NTYPE_NATIONAL,
  24         INFO_NTYPE_INTERNATIONAL
  25 };
  26
  27 enum { /* number presentation */
  28         INFO_PRESENT_NOTAVAIL,
  29         INFO_PRESENT_ALLOWED,
  30         INFO_PRESENT_RESTRICTED
  31 };
  32
  33 enum { /* number presentation */
  34         INFO_SCREEN_USER, /* user provided */
  35         INFO_SCREEN_USER_VERIFIED_PASSED,
  36         INFO_SCREEN_USER_VERIFIED_FAILED,
  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_ECHO,               /* enable/disable echoe */
 126         mISDNSIGNAL_DELAY,              /* use delay or adaptive jitter */
 127 };
 128
 129 enum { /* bchannel assignment */
 130         BCHANNEL_REQUEST,               /* application requests bchannel */
 131         BCHANNEL_RELEASE,               /* application releases bchannel */
 132         BCHANNEL_ASSIGN,                /* bchannel assigned by LCR */
 133         BCHANNEL_ASSIGN_ACK,            /* application acknowledges */
 134         BCHANNEL_REMOVE,                /* bchannel removed by LCR */
 135         BCHANNEL_REMOVE_ACK,            /* application acknowledges */
 136 };
 137 enum {
 138         B_STATE_IDLE,           /* not open */
 139         B_STATE_ACTIVATING,     /* DL_ESTABLISH sent */
 140         B_STATE_ACTIVE,         /* channel active */
 141         B_STATE_DEACTIVATING,   /* DL_RELEASE sent */
 142         B_STATE_EXPORTING,      /* BCHANNEL_ASSIGN sent */
 143         B_STATE_REMOTE,         /* bchannel assigned to remote application */
 144         B_STATE_IMPORTING,      /* BCHANNEL_REMOVE sent */
 145 };
 146 enum {
 147         B_MODE_TRANSPARENT,     /* normal transparent audio */
 148         B_MODE_HDLC,            /* hdlc data mode */
 149 };
 150
 151 /* rtp-info structure */
 152 struct rtp_info {
 153         int payload_type;
 154         unsigned int ip;
 155         unsigned short port;
 156 };
 157
 158 /* call-info structure CALLER */
 159 struct caller_info {
 160         char id[32];                    /* id of caller (user number) */
 161         char extension[32];             /* internal id */
 162         char name[16];
 163         int isdn_port;                  /* internal/external port (if call is isdn) */
 164         char interface[32];             /* interface name the call was from */
 165         int itype;                      /* type of interface */
 166         int ntype;                      /* type of number */
 167         int present;                    /* presentation */
 168         int screen;                     /* who provided the number */
 169         char display[84];               /* display information */
 170         char id2[32];                   /* second callerid */
 171         int ntype2;                     /* second type of number */
 172         int present2;                   /* second presentation */
 173         int screen2;                    /* second who provided the number */
 174         char imsi[16];                  /* IMSI for gsm originated calls */
 175 };
 176
 177 /* call-info structure DIALING */
 178 struct dialing_info {
 179         char id[256];                   /* number dialing (so far) */
 180         char interfaces[128];           /* interfaces for extenal calls */
 181         int itype;                      /* type of interface */
 182         int ntype;                      /* type of number */
 183         int sending_complete;           /* end of dialing */
 184         char display[84];               /* display information */
 185         char keypad[33];                /* send keypad facility */
 186 };
 187
 188 /* call-info structure CONNECT */
 189 struct connect_info {
 190         char id[32];                    /* id of caller (user number) */
 191         char extension[32];             /* internal id */
 192         char name[16];
 193         int isdn_port;                  /* internal/external port (if call is isdn) */
 194         char interface[128];            /* interface for extenal calls */
 195         int itype;                      /* type of interface */
 196         int ntype;                      /* type of number */
 197         int present;                    /* presentation */
 198         int screen;                     /* who provided the number */
 199         char display[84];               /* display information */
 200         char imsi[16];                  /* IMSI for gsm terminated calls */
 201         struct rtp_info rtpinfo;        /* info about RTP peer */
 202 };
 203
 204 /* call-info structure DISCONNECT */
 205 struct disconnect_info {
 206         int cause;                      /* reason for disconnect */
 207         int location;                   /* disconnect location */
 208         char display[84];               /* optional display information */
 209         int force;                      /* special flag to release imediately */
 210 };
 211
 212 /* call-info structure REDIR */
 213 struct redir_info {
 214         char id[32];                    /* id of caller (user number) */
 215         char extension[32];             /* internal id */
 216         int isdn_port;                  /* internal/external port (if call is isdn) */
 217         int itype;                      /* type of interface */
 218         int ntype;                      /* type of number */
 219         int present;                    /* presentation */
 220         int screen;                     /* who provided the number */
 221         int reason;                     /* reason for redirecing */
 222 };
 223
 224 /* call-info structure capability */
 225 struct capa_info {
 226         int source_mode;                /* forward mode */
 227         int bearer_capa;                /* capability */
 228         int bearer_mode;                /* circuit/packet */
 229         int bearer_info1;               /* alaw,ulaw,... */
 230         int hlc;                        /* hlc capability */
 231         int exthlc;                     /* extendet hlc */
 232 };
 233
 234 /* call-info structure NOTIFY */
 235 struct notify_info {
 236         int notify;                     /* notifications (see INFO_NOTIFY_*) */
 237         char id[32];                    /* redirection id (user number) */
 238         char extension[32];             /* internal id */
 239         int isdn_port;                  /* internal/external port (if call is isdn) */
 240         int itype;                      /* type of interface */
 241         int ntype;                      /* type of number */
 242         int present;                    /* redirection presentation */
 243         char display[84];               /* display information */
 244         int local;                      /* if set, endpoints gets information about audio channel (open/close) */
 245 };
 246
 247 /* call-info structure PROGRESS */
 248 struct progress_info {
 249         int progress;                   /* progress indicator */
 250         int location;                   /* progress location */
 251         struct rtp_info rtpinfo;        /* info about RTP peer */
 252 };
 253
 254 /* call-info structure FACILITY */
 255 struct facility_info {
 256         char data[256];                 /* data info about facility */
 257         int len;                        /* length of facility content */
 258 };
 259
 260 /* call-info structure USERUSER */
 261 struct useruser_info {
 262         int protocol;
 263         int len;
 264         unsigned char data[128];        /* user-user info (not a sting!)*/
 265 };
 266
 267 /* call-info structure SETUP */
 268 struct message_setup {
 269         int isdn_port; /* card number 1...n (only on calls from isdn port) */
 270         int port_type; /* type of port (only required if message is port -> epoint) */
 271         int partyline; /* if set, call will be a conference room */
 272         int partyline_jingle; /* if set, the jingle will be played on conference join */
 273         struct caller_info callerinfo;          /* information about the caller */
 274         struct dialing_info dialinginfo;        /* information about dialing */
 275         struct redir_info redirinfo;            /* info on redirection (to the calling user) */
 276         struct capa_info capainfo;              /* info on l2,l3 capability */
 277         struct useruser_info useruser;          /* user-user */
 278         struct progress_info progress;          /* info on call progress */
 279         struct rtp_info rtpinfo;                /* info about RTP peer */
 280         char context[128];                      /* asterisk context */
 281 };
 282
 283 /* call-info structure PARK */
 284 struct park_info {
 285         char callid[8];
 286         int len;
 287 };
 288
 289 struct param_play {
 290         char file[512]; /* file name */
 291         int offset; /* offset to start file at (in seconds) */
 292 };
 293
 294 struct param_tone {
 295         char dir[128]; /* directory */
 296         char name[128]; /* file name */
 297 };
 298
 299 struct param_counter {
 300         int current; /* current counter in seconds */
 301         int max; /* total size of file (0=no info) */
 302 };
 303
 304 struct param_mISDNsignal {
 305         int message;
 306         int tx_gain;
 307         int rx_gain;
 308         int conf;
 309         int tone;
 310         int echo;
 311         int delay;
 312 };
 313
 314 /* encryption control structure CRYPT */
 315 struct param_crypt {
 316         int type; /* see messages in crypt.h */
 317         int len;
 318         unsigned char data[512+32]; /* a block of 512 byte + some overhead */
 319 };
 320
 321 struct param_hello {
 322         char application[32]; /* name of remote application */
 323 };
 324
 325 struct param_bchannel {
 326         int type; /* BCHANNEL_* */
 327         unsigned int handle; /* bchannel stack/portid */
 328         int isloopback; /* in this case the application behaves like an interface, dsp should not be used */
 329         int tx_gain, rx_gain;
 330         char pipeline[256];
 331         unsigned char crypt[128];
 332         int crypt_len;
 333         int crypt_type; /* 1 = blowfish */
 334 };
 335
 336 struct param_newref {
 337         int direction; /* who requests a refe? */
 338         int mode; /* 0 = direct-mode, 1 = PBX mode */
 339 };
 340
 341 /* structure of message parameter */
 342 union parameter {
 343         struct param_tone tone; /* MESSAGE_TONE */
 344         char dtmf; /* MESSAGE_DTMF */
 345         struct message_setup setup; /* MESSAGE_SETUP */
 346         struct dialing_info information; /* MESSAGE_INFO */
 347         struct connect_info connectinfo; /* CONNECT INFO */
 348         struct disconnect_info disconnectinfo; /* DISCONNECT INFO */
 349         struct notify_info notifyinfo; /* some notifications */
 350         struct progress_info progressinfo; /* some progress */
 351         struct facility_info facilityinfo; /* some notifications */
 352         struct park_info parkinfo; /* MESSAGE_SUSPEND, MESSAGE_RESUME */
 353         int state; /* MESSAGE_TIMEOUT */
 354         int knock; /* MESSAGE_KNOCK 0=off !0=on */
 355         int audiopath; /* MESSAGE_audiopath see RELATION_CHANNEL_* (join.h) */
 356         struct param_play play; /* MESSAGE_VBOX_PLAY */
 357         int speed; /* MESSAGE_VBOX_PLAY_SPEED */
 358         struct param_counter counter; /* MESSAGE_TONE_COUNTER */
 359         struct param_mISDNsignal mISDNsignal; /* MESSAGE_mISDNSIGNAL */
 360         struct extension ext; /* tell port about extension information */
 361         struct param_crypt crypt; /* MESSAGE_CRYPT */
 362         struct param_hello hello; /* MESSAGE_HELLO */
 363         struct param_bchannel bchannel; /* MESSAGE_BCHANNEL */
 364         struct param_newref newref; /* MESSAGE_NEWREF */
 365         unsigned int bridge_id; /* MESSAGE_BRIDGE */
 366 };
 367
 368 enum { /* message flow */
 369         PORT_TO_EPOINT,
 370         EPOINT_TO_JOIN,
 371         JOIN_TO_EPOINT,
 372         EPOINT_TO_PORT,
 373 };
 374
 375 /* message structure */
 376 struct lcr_msg {
 377         struct lcr_msg *next;
 378         int type; /* type of message */
 379         int flow; /* from where to where */
 380         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 */
 381         unsigned int id_to;
 382         int keep;
 383         union parameter param;
 384 };
 385
 386 enum { /* messages between entities */
 387         MESSAGE_NONE,           /* no message */
 388         MESSAGE_TONE,           /* set information tone (to isdn port) */
 389         MESSAGE_DTMF,           /* dtmf digit (from isdn port) */
 390         MESSAGE_ENABLEKEYPAD,   /* remote application requests keypad/dtmf */
 391         MESSAGE_mISDNSIGNAL,    /* special mixer command (down to isdn port) */
 392         MESSAGE_SETUP,          /* setup message */
 393         MESSAGE_INFORMATION,    /* additional digit information */
 394         MESSAGE_OVERLAP,        /* call accepted, send more information */
 395         MESSAGE_PROCEEDING,     /* proceeding */
 396         MESSAGE_ALERTING,       /* ringing */
 397         MESSAGE_CONNECT,        /* connect */
 398         MESSAGE_DISCONNECT,     /* disconnect with cause */
 399         MESSAGE_RELEASE,        /* release with cause */
 400         MESSAGE_TIMEOUT,        /* protocol state has timed out (port->epoint) */
 401         MESSAGE_NOTIFY,         /* used to send notify info */
 402         MESSAGE_PROGRESS,       /* used to send progress info */
 403         MESSAGE_FACILITY,       /* used to facility infos, like aocd */
 404         MESSAGE_SUSPEND,        /* suspend port */
 405         MESSAGE_RESUME,         /* resume port */
 406         MESSAGE_AUDIOPATH,      /* set status of audio path to endpoint (to call, audio is also set) */
 407         MESSAGE_PATTERN,        /* pattern information tones available */
 408         MESSAGE_NOPATTERN,      /* pattern information tones unavailable */
 409         MESSAGE_CRYPT,          /* encryption message */
 410         MESSAGE_VBOX_PLAY,      /* play recorded file */
 411         MESSAGE_VBOX_PLAY_SPEED,/* change speed of file */
 412         MESSAGE_VBOX_TONE,      /* set answering VBOX tone */
 413         MESSAGE_TONE_COUNTER,   /* tone counter (for VBOX tone use) */
 414         MESSAGE_TONE_EOF,       /* tone is end of file */
 415         MESSAGE_BCHANNEL,       /* request/assign/remove bchannel */
 416         MESSAGE_HELLO,          /* hello message for remote application */
 417         MESSAGE_NEWREF,         /* special message to create and inform ref */
 418         MESSAGE_BRIDGE,         /* control port bridge */
 419 };
 420
 421 #define MESSAGES static const char *messages_txt[] = { \
 422         "MESSAGE_NONE", \
 423         "MESSAGE_TONE", \
 424         "MESSAGE_DTMF", \
 425         "MESSAGE_ENABLEKEYPAD", \
 426         "MESSAGE_mISDNSIGNAL", \
 427         "MESSAGE_SETUP", \
 428         "MESSAGE_INFORMATION", \
 429         "MESSAGE_OVERLAP", \
 430         "MESSAGE_PROCEEDING", \
 431         "MESSAGE_ALERTING", \
 432         "MESSAGE_CONNECT", \
 433         "MESSAGE_DISCONNECT", \
 434         "MESSAGE_RELEASE", \
 435         "MESSAGE_TIMEOUT", \
 436         "MESSAGE_NOTIFY", \
 437         "MESSAGE_PROGRESS", \
 438         "MESSAGE_FACILITY", \
 439         "MESSAGE_SUSPEND", \
 440         "MESSAGE_RESUME", \
 441         "MESSAGE_AUDIOPATH", \
 442         "MESSAGE_PATTERN", \
 443         "MESSAGE_NOPATTERN", \
 444         "MESSAGE_CRYPT", \
 445         "MESSAGE_VBOX_PLAY", \
 446         "MESSAGE_VBOX_PLAY_SPEED", \
 447         "MESSAGE_VBOX_TONE", \
 448         "MESSAGE_TONE_COUNTER", \
 449         "MESSAGE_TONE_EOF", \
 450         "MESSAGE_BCHANNEL", \
 451         "MESSAGE_HELLO", \
 452         "MESSAGE_NEWREF", \
 453         "MESSAGE_BRIDGE", \
 454 };
 455
 456
 457 struct lcr_msg *message_create(int id_from, int id_to, int flow, int type);
 458 #define message_put(m) _message_put(m, __FILE__, __LINE__)
 459 void _message_put(struct lcr_msg *message, const char *file, int line);
 460 struct lcr_msg *message_forward(int id_from, int id_to, int flow, union parameter *param);
 461 struct lcr_msg *message_get(void);
 462 void message_free(struct lcr_msg *message);
 463 void init_message(void);
 464 void cleanup_message(void);
 465
 466