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 {
 130         B_STATE_IDLE,           /* not open */
 131         B_STATE_ACTIVATING,     /* DL_ESTABLISH sent */
 132         B_STATE_ACTIVE,         /* channel active */
 133         B_STATE_DEACTIVATING,   /* DL_RELEASE sent */
 134 };
 135
 136 enum {
 137         B_MODE_TRANSPARENT,     /* normal transparent audio */
 138         B_MODE_HDLC,            /* hdlc data mode */
 139 };
 140
 141 enum {
 142         MEDIA_TYPE_ALAW = 1,
 143         MEDIA_TYPE_ULAW,
 144         MEDIA_TYPE_GSM,
 145         MEDIA_TYPE_GSM_EFR,
 146         MEDIA_TYPE_AMR,
 147         MEDIA_TYPE_GSM_HR,
 148 };
 149
 150 /* rtp-info structure */
 151 struct rtp_info {
 152         int payloads;                   /* number of payloads offered */
 153         unsigned char payload_types[32];/* rtp payload types */
 154         int media_types[32];            /* media type of given payload */
 155         unsigned int ip;                /* peer's IP */
 156         unsigned short port;            /* peer's port */
 157 };
 158
 159 /* call-info structure CALLER */
 160 struct caller_info {
 161         char id[32];                    /* id of caller (user number) */
 162         char extension[32];             /* internal id */
 163         char name[16];
 164         int isdn_port;                  /* internal/external port (if call is isdn) */
 165         char interface[32];             /* interface name the call was from */
 166         int itype;                      /* type of interface */
 167         int ntype;                      /* type of number */
 168         int present;                    /* presentation */
 169         int screen;                     /* who provided the number */
 170         char display[84];               /* display information */
 171         char id2[32];                   /* second callerid */
 172         int ntype2;                     /* second type of number */
 173         int present2;                   /* second presentation */
 174         int screen2;                    /* second who provided the number */
 175         char imsi[16];                  /* IMSI for gsm originated calls */
 176 };
 177
 178 /* call-info structure DIALING */
 179 struct dialing_info {
 180         char id[256];                   /* number dialing (so far) */
 181         char interfaces[128];           /* interfaces for extenal calls */
 182         int itype;                      /* type of interface */
 183         int ntype;                      /* type of number */
 184         int sending_complete;           /* end of dialing */
 185         char display[84];               /* display information */
 186         char keypad[33];                /* send keypad facility */
 187         char context[32];               /* asterisk context */
 188 };
 189
 190 /* call-info structure CONNECT */
 191 struct connect_info {
 192         char id[32];                    /* id of caller (user number) */
 193         char extension[32];             /* internal id */
 194         char name[16];
 195         int isdn_port;                  /* internal/external port (if call is isdn) */
 196         char interface[128];            /* interface for extenal calls */
 197         int itype;                      /* type of interface */
 198         int ntype;                      /* type of number */
 199         int present;                    /* presentation */
 200         int screen;                     /* who provided the number */
 201         char display[84];               /* display information */
 202         char imsi[16];                  /* IMSI for gsm terminated calls */
 203         struct rtp_info rtpinfo;        /* info about RTP peer */
 204 };
 205
 206 /* call-info structure DISCONNECT */
 207 struct disconnect_info {
 208         int cause;                      /* reason for disconnect */
 209         int location;                   /* disconnect location */
 210         char display[84];               /* optional display information */
 211         int force;                      /* special flag to release imediately */
 212 };
 213
 214 /* call-info structure REDIR */
 215 struct redir_info {
 216         char id[32];                    /* id of caller (user number) */
 217         char extension[32];             /* internal id */
 218         int isdn_port;                  /* internal/external port (if call is isdn) */
 219         int itype;                      /* type of interface */
 220         int ntype;                      /* type of number */
 221         int present;                    /* presentation */
 222         int screen;                     /* who provided the number */
 223         int reason;                     /* reason for redirecing */
 224 };
 225
 226 /* call-info structure capability */
 227 struct capa_info {
 228         int source_mode;                /* forward mode */
 229         int bearer_capa;                /* capability */
 230         int bearer_mode;                /* circuit/packet */
 231         int bearer_info1;               /* alaw,ulaw,... */
 232         int hlc;                        /* hlc capability */
 233         int exthlc;                     /* extendet hlc */
 234 };
 235
 236 /* call-info structure NOTIFY */
 237 struct notify_info {
 238         int notify;                     /* notifications (see INFO_NOTIFY_*) */
 239         char id[32];                    /* redirection id (user number) */
 240         char extension[32];             /* internal id */
 241         int isdn_port;                  /* internal/external port (if call is isdn) */
 242         int itype;                      /* type of interface */
 243         int ntype;                      /* type of number */
 244         int present;                    /* redirection presentation */
 245         char display[84];               /* display information */
 246         int local;                      /* if set, endpoints gets information about audio channel (open/close) */
 247 };
 248
 249 /* call-info structure PROGRESS */
 250 struct progress_info {
 251         int progress;                   /* progress indicator */
 252         int location;                   /* progress location */
 253         struct rtp_info rtpinfo;        /* info about RTP peer */
 254 };
 255
 256 /* call-info structure FACILITY */
 257 struct facility_info {
 258         char data[256];                 /* data info about facility */
 259         int len;                        /* length of facility content */
 260 };
 261
 262 /* call-info structure USERUSER */
 263 struct useruser_info {
 264         int protocol;
 265         int len;
 266         unsigned char data[128];        /* user-user info (not a sting!)*/
 267 };
 268
 269 /* call-info structure SETUP */
 270 struct message_setup {
 271         int isdn_port; /* card number 1...n (only on calls from isdn port) */
 272         int port_type; /* type of port (only required if message is port -> epoint) */
 273         int partyline; /* if set, call will be a conference room */
 274         int partyline_jingle; /* if set, the jingle will be played on conference join */
 275         struct caller_info callerinfo;          /* information about the caller */
 276         struct dialing_info dialinginfo;        /* information about dialing */
 277         struct redir_info redirinfo;            /* info on redirection (to the calling user) */
 278         struct capa_info capainfo;              /* info on l2,l3 capability */
 279         struct useruser_info useruser;          /* user-user */
 280         struct progress_info progress;          /* info on call progress */
 281         struct rtp_info rtpinfo;                /* info about RTP peer */
 282 };
 283
 284 /* call-info structure PARK */
 285 struct park_info {
 286         char callid[8];
 287         int len;
 288 };
 289
 290 struct param_play {
 291         char file[512]; /* file name */
 292         int offset; /* offset to start file at (in seconds) */
 293 };
 294
 295 struct param_tone {
 296         char dir[128]; /* directory */
 297         char name[128]; /* file name */
 298 };
 299
 300 struct param_counter {
 301         int current; /* current counter in seconds */
 302         int max; /* total size of file (0=no info) */
 303 };
 304
 305 struct param_mISDNsignal {
 306         int message;
 307         int tx_gain;
 308         int rx_gain;
 309         int conf;
 310         int tone;
 311         int echo;
 312         int delay;
 313 };
 314
 315 /* encryption control structure CRYPT */
 316 struct param_crypt {
 317         int type; /* see messages in crypt.h */
 318         int len;
 319         unsigned char data[512+32]; /* a block of 512 byte + some overhead */
 320 };
 321
 322 struct param_hello {
 323         char application[32]; /* name of remote application */
 324 };
 325
 326 struct param_bchannel {
 327         int type; /* BCHANNEL_* */
 328         unsigned int handle; /* bchannel stack/portid */
 329         int isloopback; /* in this case the application behaves like an interface, dsp should not be used */
 330         int tx_gain, rx_gain;
 331         char pipeline[256];
 332         unsigned char crypt[128];
 333         int crypt_len;
 334         int crypt_type; /* 1 = blowfish */
 335 };
 336
 337 struct param_newref {
 338         int direction; /* who requests a refe? */
 339 };
 340
 341 struct param_traffic {
 342         int len;        /* how much data */
 343         unsigned char data[160];        /* 20ms */
 344 };
 345
 346 /* structure of message parameter */
 347 union parameter {
 348         struct param_tone tone; /* MESSAGE_TONE */
 349         char dtmf; /* MESSAGE_DTMF */
 350         struct message_setup setup; /* MESSAGE_SETUP */
 351         struct dialing_info information; /* MESSAGE_INFO */
 352         struct connect_info connectinfo; /* CONNECT INFO */
 353         struct disconnect_info disconnectinfo; /* DISCONNECT INFO */
 354         struct notify_info notifyinfo; /* some notifications */
 355         struct progress_info progressinfo; /* some progress */
 356         struct facility_info facilityinfo; /* some notifications */
 357         struct park_info parkinfo; /* MESSAGE_SUSPEND, MESSAGE_RESUME */
 358         int state; /* MESSAGE_TIMEOUT */
 359         int knock; /* MESSAGE_KNOCK 0=off !0=on */
 360         int audiopath; /* MESSAGE_audiopath see RELATION_CHANNEL_* (join.h) */
 361         struct param_play play; /* MESSAGE_VBOX_PLAY */
 362         int speed; /* MESSAGE_VBOX_PLAY_SPEED */
 363         struct param_counter counter; /* MESSAGE_TONE_COUNTER */
 364         struct param_mISDNsignal mISDNsignal; /* MESSAGE_mISDNSIGNAL */
 365         struct extension ext; /* tell port about extension information */
 366         struct param_crypt crypt; /* MESSAGE_CRYPT */
 367         struct param_hello hello; /* MESSAGE_HELLO */
 368         struct param_bchannel bchannel; /* MESSAGE_BCHANNEL */
 369         struct param_newref newref; /* MESSAGE_NEWREF */
 370         unsigned int bridge_id; /* MESSAGE_BRIDGE */
 371         struct param_traffic traffic; /* MESSAGE_TRAFFIC */
 372 };
 373
 374 enum { /* message flow */
 375         PORT_TO_EPOINT,
 376         EPOINT_TO_JOIN,
 377         JOIN_TO_EPOINT,
 378         EPOINT_TO_PORT,
 379 };
 380
 381 /* message structure */
 382 struct lcr_msg {
 383         struct lcr_msg *next;
 384         int type; /* type of message */
 385         int flow; /* from where to where */
 386         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 */
 387         unsigned int id_to;
 388         int keep;
 389         union parameter param;
 390 };
 391
 392 enum { /* messages between entities */
 393         MESSAGE_NONE,           /* no message */
 394         MESSAGE_TONE,           /* set information tone (to isdn port) */
 395         MESSAGE_DTMF,           /* dtmf digit (from isdn port) */
 396         MESSAGE_ENABLEKEYPAD,   /* remote application requests keypad/dtmf */
 397         MESSAGE_mISDNSIGNAL,    /* special mixer command (down to isdn port) */
 398         MESSAGE_SETUP,          /* setup message */
 399         MESSAGE_INFORMATION,    /* additional digit information */
 400         MESSAGE_OVERLAP,        /* call accepted, send more information */
 401         MESSAGE_PROCEEDING,     /* proceeding */
 402         MESSAGE_ALERTING,       /* ringing */
 403         MESSAGE_CONNECT,        /* connect */
 404         MESSAGE_DISCONNECT,     /* disconnect with cause */
 405         MESSAGE_RELEASE,        /* release with cause */
 406         MESSAGE_TIMEOUT,        /* protocol state has timed out (port->epoint) */
 407         MESSAGE_NOTIFY,         /* used to send notify info */
 408         MESSAGE_PROGRESS,       /* used to send progress info */
 409         MESSAGE_FACILITY,       /* used to facility infos, like aocd */
 410         MESSAGE_SUSPEND,        /* suspend port */
 411         MESSAGE_RESUME,         /* resume port */
 412         MESSAGE_AUDIOPATH,      /* set status of audio path to endpoint (to call, audio is also set) */
 413         MESSAGE_PATTERN,        /* pattern information tones available */
 414         MESSAGE_NOPATTERN,      /* pattern information tones unavailable */
 415         MESSAGE_CRYPT,          /* encryption message */
 416         MESSAGE_VBOX_PLAY,      /* play recorded file */
 417         MESSAGE_VBOX_PLAY_SPEED,/* change speed of file */
 418         MESSAGE_VBOX_TONE,      /* set answering VBOX tone */
 419         MESSAGE_TONE_COUNTER,   /* tone counter (for VBOX tone use) */
 420         MESSAGE_TONE_EOF,       /* tone is end of file */
 421         MESSAGE_BCHANNEL,       /* request/assign/remove bchannel */
 422         MESSAGE_HELLO,          /* hello message for remote application */
 423         MESSAGE_NEWREF,         /* special message to create and inform ref */
 424         MESSAGE_BRIDGE,         /* control port bridge */
 425         MESSAGE_TRAFFIC,        /* exchange bchannel traffic */
 426 };
 427
 428 #define MESSAGES static const char *messages_txt[] = { \
 429         "MESSAGE_NONE", \
 430         "MESSAGE_TONE", \
 431         "MESSAGE_DTMF", \
 432         "MESSAGE_ENABLEKEYPAD", \
 433         "MESSAGE_mISDNSIGNAL", \
 434         "MESSAGE_SETUP", \
 435         "MESSAGE_INFORMATION", \
 436         "MESSAGE_OVERLAP", \
 437         "MESSAGE_PROCEEDING", \
 438         "MESSAGE_ALERTING", \
 439         "MESSAGE_CONNECT", \
 440         "MESSAGE_DISCONNECT", \
 441         "MESSAGE_RELEASE", \
 442         "MESSAGE_TIMEOUT", \
 443         "MESSAGE_NOTIFY", \
 444         "MESSAGE_PROGRESS", \
 445         "MESSAGE_FACILITY", \
 446         "MESSAGE_SUSPEND", \
 447         "MESSAGE_RESUME", \
 448         "MESSAGE_AUDIOPATH", \
 449         "MESSAGE_PATTERN", \
 450         "MESSAGE_NOPATTERN", \
 451         "MESSAGE_CRYPT", \
 452         "MESSAGE_VBOX_PLAY", \
 453         "MESSAGE_VBOX_PLAY_SPEED", \
 454         "MESSAGE_VBOX_TONE", \
 455         "MESSAGE_TONE_COUNTER", \
 456         "MESSAGE_TONE_EOF", \
 457         "MESSAGE_BCHANNEL", \
 458         "MESSAGE_HELLO", \
 459         "MESSAGE_NEWREF", \
 460         "MESSAGE_BRIDGE", \
 461         "MESSAGE_TRAFFIC", \
 462 };
 463
 464
 465 struct lcr_msg *message_create(int id_from, int id_to, int flow, int type);
 466 #define message_put(m) _message_put(m, __FILE__, __LINE__)
 467 void _message_put(struct lcr_msg *message, const char *file, int line);
 468 struct lcr_msg *message_forward(int id_from, int id_to, int flow, union parameter *param);
 469 struct lcr_msg *message_get(void);
 470 void message_free(struct lcr_msg *message);
 471 void init_message(void);
 472 void cleanup_message(void);
 473
 474