Thu Apr 28 2011 16:56:47

Asterisk developer's documentation


isdn_lib.c

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00001 /*
00002  * Chan_Misdn -- Channel Driver for Asterisk
00003  *
00004  * Interface to mISDN
00005  *
00006  * Copyright (C) 2004, Christian Richter
00007  *
00008  * Christian Richter <crich@beronet.com>
00009  *
00010  * This program is free software, distributed under the terms of
00011  * the GNU General Public License
00012  */
00013 
00014 /*! \file 
00015  * \brief Interface to mISDN
00016  * \author Christian Richter <crich@beronet.com>
00017  */
00018 
00019 
00020 
00021 #include <syslog.h>
00022 #include <sys/time.h>
00023 #include <mISDNuser/isdn_debug.h>
00024 
00025 #include "isdn_lib_intern.h"
00026 #include "isdn_lib.h"
00027 
00028 enum event_response_e (*cb_event) (enum event_e event, struct misdn_bchannel *bc, void *user_data);
00029 
00030 void (*cb_log) (int level, int port, char *tmpl, ...)
00031    __attribute__ ((format (printf, 3, 4)));
00032 
00033 int (*cb_jb_empty)(struct misdn_bchannel *bc, char *buffer, int len);
00034 
00035 
00036 /* 
00037  * Define ARRAY_LEN() because I cannot
00038  * #include "asterisk/utils.h"
00039  */
00040 #define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
00041 
00042 #include "asterisk/causes.h"
00043 
00044 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id);
00045 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id);
00046 
00047 int queue_cleanup_bc(struct misdn_bchannel *bc) ;
00048 
00049 int misdn_lib_get_l2_up(struct misdn_stack *stack);
00050 
00051 struct misdn_stack* get_misdn_stack( void );
00052 
00053 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh);
00054 
00055 int misdn_lib_port_is_pri(int port)
00056 {
00057    struct misdn_stack *stack=get_misdn_stack();
00058    for ( ; stack; stack=stack->next) {
00059       if (stack->port == port) {
00060          return stack->pri;
00061       }
00062    }
00063    
00064    return -1;
00065 }
00066 
00067 int misdn_lib_port_is_nt(int port)
00068 {
00069    struct misdn_stack *stack=get_misdn_stack();
00070    for ( ; stack; stack=stack->next) {
00071       if (stack->port == port) {
00072          return stack->nt;
00073       }
00074    }
00075    
00076    return -1;
00077 }
00078 
00079 void misdn_make_dummy(struct misdn_bchannel *dummybc, int port, int l3id, int nt, int channel) 
00080 {
00081    memset (dummybc,0,sizeof(struct misdn_bchannel));
00082    dummybc->port=port;
00083    if (l3id==0) 
00084       dummybc->l3_id = MISDN_ID_DUMMY;
00085    else
00086       dummybc->l3_id=l3id;
00087 
00088    dummybc->nt=nt;
00089    dummybc->dummy=1;
00090    dummybc->channel=channel;
00091 }
00092 
00093 int misdn_lib_port_block(int port)
00094 {
00095    struct misdn_stack *stack=get_misdn_stack();
00096    for ( ; stack; stack=stack->next) {
00097       if (stack->port == port) {
00098          stack->blocked=1;
00099          return 0;
00100       }
00101    }
00102    return -1;
00103 
00104 }
00105 
00106 int misdn_lib_port_unblock(int port)
00107 {
00108    struct misdn_stack *stack=get_misdn_stack();
00109    for ( ; stack; stack=stack->next) {
00110       if (stack->port == port) {
00111          stack->blocked=0;
00112          return 0;
00113       }
00114    }
00115    return -1;
00116 
00117 }
00118 
00119 int misdn_lib_is_port_blocked(int port)
00120 {  
00121    struct misdn_stack *stack=get_misdn_stack();
00122    for ( ; stack; stack=stack->next) {
00123       if (stack->port == port) {
00124          return stack->blocked;
00125       }
00126    }
00127    return -1;
00128 }
00129 
00130 int misdn_lib_is_ptp(int port)
00131 {
00132    struct misdn_stack *stack=get_misdn_stack();
00133    for ( ; stack; stack=stack->next) {
00134       if (stack->port == port) return stack->ptp;
00135    }
00136    return -1;
00137 }
00138 
00139 int misdn_lib_get_maxchans(int port) 
00140 {
00141    struct misdn_stack *stack=get_misdn_stack();
00142    for ( ; stack; stack=stack->next) {
00143       if (stack->port == port) {
00144          if (stack->pri) 
00145             return 30;
00146          else
00147             return 2;
00148       }
00149    }
00150    return -1;
00151 }
00152 
00153 
00154 struct misdn_stack *get_stack_by_bc(struct misdn_bchannel *bc)
00155 {
00156    struct misdn_stack *stack = get_misdn_stack();
00157 
00158    if (!bc)
00159       return NULL;
00160    
00161    for ( ; stack; stack = stack->next) {
00162       if (bc->port == stack->port)
00163          return stack;
00164    }
00165 
00166    return NULL;
00167 }
00168 
00169 
00170 void get_show_stack_details(int port, char *buf)
00171 {
00172    struct misdn_stack *stack=get_misdn_stack();
00173    
00174    for ( ; stack; stack=stack->next) {
00175       if (stack->port == port) break;
00176    }
00177    
00178    if (stack) {
00179       sprintf(buf, "* Port %d Type %s Prot. %s L2Link %s L1Link:%s Blocked:%d",
00180          stack->port, stack->nt ? "NT" : "TE", stack->ptp ? "PTP" : "PMP",
00181          stack->l2link ? "UP" : "DOWN", stack->l1link ? "UP" : "DOWN",
00182          stack->blocked);
00183    } else {
00184       buf[0]=0;
00185    }
00186 }
00187 
00188 
00189 static int nt_err_cnt =0 ;
00190 
00191 enum global_states {
00192    MISDN_INITIALIZING,
00193    MISDN_INITIALIZED
00194 } ;
00195 
00196 static enum global_states  global_state=MISDN_INITIALIZING;
00197 
00198 
00199 #include <mISDNuser/net_l2.h>
00200 #include <mISDNuser/tone.h>
00201 #include <unistd.h>
00202 #include <semaphore.h>
00203 #include <pthread.h>
00204 #include <signal.h>
00205 
00206 #include "isdn_lib.h"
00207 
00208 
00209 struct misdn_lib {
00210    /*! \brief mISDN device handle returned by mISDN_open() */
00211    int midev;
00212    int midev_nt;  /* Not used */
00213 
00214    pthread_t event_thread;
00215    pthread_t event_handler_thread;
00216 
00217    void *user_data;
00218 
00219    msg_queue_t upqueue;
00220    msg_queue_t activatequeue; 
00221   
00222    sem_t new_msg;
00223   
00224    struct misdn_stack *stack_list;
00225 } ;
00226 
00227 #ifndef ECHOCAN_ON
00228 #define ECHOCAN_ON 123
00229 #define ECHOCAN_OFF 124
00230 #endif
00231 
00232 #define MISDN_DEBUG 0
00233 
00234 void misdn_tx_jitter(struct misdn_bchannel *bc, int len);
00235 
00236 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id);
00237 
00238 int setup_bc(struct misdn_bchannel *bc);
00239 
00240 int manager_isdn_handler(iframe_t *frm ,msg_t *msg);
00241 
00242 int misdn_lib_port_restart(int port);
00243 int misdn_lib_pid_restart(int pid);
00244 
00245 extern struct isdn_msg msgs_g[]; 
00246 
00247 #define ISDN_PID_L3_B_USER 0x430000ff
00248 #define ISDN_PID_L4_B_USER 0x440000ff
00249 
00250 /* #define MISDN_IBUF_SIZE 1024 */
00251 #define MISDN_IBUF_SIZE 512
00252 
00253 /*  Fine Tuning of Inband  Signalling time */
00254 #define TONE_ALERT_CNT 41 /*  1 Sec  */
00255 #define TONE_ALERT_SILENCE_CNT 200 /*  4 Sec */
00256 
00257 #define TONE_BUSY_CNT 20 /*  ? */
00258 #define TONE_BUSY_SILENCE_CNT 48 /*  ? */
00259 
00260 static int  entity;
00261 
00262 static struct misdn_lib *glob_mgr;
00263 
00264 static char tone_425_flip[TONE_425_SIZE];
00265 static char tone_silence_flip[TONE_SILENCE_SIZE];
00266 
00267 static void misdn_lib_isdn_event_catcher(void *arg);
00268 static int handle_event_nt(void *dat, void *arg);
00269 
00270 
00271 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder);
00272 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder);
00273 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id);
00274 
00275 /* from isdn_lib.h */
00276    /* user iface */
00277 int te_lib_init( void ) ; /* returns midev */
00278 void te_lib_destroy(int midev) ;
00279 struct misdn_bchannel *manager_find_bc_by_pid(int pid);
00280 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len);
00281 void manager_clean_bc(struct misdn_bchannel *bc );
00282 void manager_bchannel_setup (struct misdn_bchannel *bc);
00283 void manager_bchannel_cleanup (struct misdn_bchannel *bc);
00284 
00285 void ec_chunk( struct misdn_bchannel *bc, unsigned char *rxchunk, unsigned char *txchunk, int chunk_size);
00286    /* end */
00287 int bchdev_echocancel_activate(struct misdn_bchannel* dev);
00288 void bchdev_echocancel_deactivate(struct misdn_bchannel* dev);
00289 /* end */
00290 
00291 
00292 static char *bearer2str(int cap) {
00293    static char *bearers[]={
00294       "Speech",
00295       "Audio 3.1k",
00296       "Unres Digital",
00297       "Res Digital",
00298       "Unknown Bearer"
00299    };
00300    
00301    switch (cap) {
00302    case INFO_CAPABILITY_SPEECH:
00303       return bearers[0];
00304       break;
00305    case INFO_CAPABILITY_AUDIO_3_1K:
00306       return bearers[1];
00307       break;
00308    case INFO_CAPABILITY_DIGITAL_UNRESTRICTED:
00309       return bearers[2];
00310       break;
00311    case INFO_CAPABILITY_DIGITAL_RESTRICTED:
00312       return bearers[3];
00313       break;
00314    default:
00315       return bearers[4];
00316       break;
00317    }
00318 }
00319 
00320 
00321 static char flip_table[256];
00322 
00323 static void init_flip_bits(void)
00324 {
00325    int i,k;
00326    
00327    for (i = 0 ; i < 256 ; i++) {
00328       unsigned char sample = 0 ;
00329       for (k = 0; k<8; k++) {
00330          if ( i & 1 << k ) sample |= 0x80 >>  k;
00331       }
00332       flip_table[i] = sample;
00333    }
00334 }
00335 
00336 static char * flip_buf_bits ( char * buf , int len)
00337 {
00338    int i;
00339    char * start = buf;
00340    
00341    for (i = 0 ; i < len; i++) {
00342       buf[i] = flip_table[(unsigned char)buf[i]];
00343    }
00344    
00345    return start;
00346 }
00347 
00348 
00349 
00350 
00351 static msg_t *create_l2msg(int prim, int dinfo, int size) /* NT only */
00352 {
00353    int i = 0;
00354    msg_t *dmsg;
00355   
00356    while(i < 10)
00357    {
00358       dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00359       if (dmsg)
00360          return(dmsg);
00361       
00362       if (!i)
00363          printf("cannot allocate memory, trying again...\n");
00364       i++;
00365       usleep(300000);
00366    }
00367    printf("cannot allocate memory, system overloaded.\n");
00368    exit(-1);
00369 }
00370 
00371 
00372 
00373 msg_t *create_l3msg(int prim, int mt, int dinfo, int size, int ntmode)
00374 {
00375    int i = 0;
00376    msg_t *dmsg;
00377    Q931_info_t *qi;
00378    iframe_t *frm;
00379   
00380    if (!ntmode)
00381       size = sizeof(Q931_info_t)+2;
00382   
00383    while(i < 10) {
00384       if (ntmode) {
00385          dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00386          if (dmsg) {
00387             return(dmsg);
00388          }
00389       } else {
00390          dmsg = alloc_msg(size+256+mISDN_HEADER_LEN+DEFAULT_HEADROOM);
00391          if (dmsg)
00392          {
00393             memset(msg_put(dmsg,size+mISDN_HEADER_LEN), 0, size+mISDN_HEADER_LEN);
00394             frm = (iframe_t *)dmsg->data;
00395             frm->prim = prim;
00396             frm->dinfo = dinfo;
00397             qi = (Q931_info_t *)(dmsg->data + mISDN_HEADER_LEN);
00398             qi->type = mt;
00399             return(dmsg);
00400          }
00401       }
00402     
00403       if (!i) printf("cannot allocate memory, trying again...\n");
00404       i++;
00405       usleep(300000);
00406    }
00407    printf("cannot allocate memory, system overloaded.\n");
00408    exit(-1);
00409 }
00410 
00411 
00412 static int send_msg (int midev, struct misdn_bchannel *bc, msg_t *dmsg)
00413 {
00414    iframe_t *frm = (iframe_t *)dmsg->data;
00415    struct misdn_stack *stack=get_stack_by_bc(bc);
00416 
00417    if (!stack) {
00418       cb_log(0,bc->port,"send_msg: IEK!! no stack\n ");
00419       return -1;
00420    }
00421    
00422    frm->addr = (stack->upper_id | FLG_MSG_DOWN);
00423    frm->dinfo = bc->l3_id;
00424    frm->len = (dmsg->len) - mISDN_HEADER_LEN;
00425             
00426    cb_log(4,stack->port,"Sending msg, prim:%x addr:%x dinfo:%x\n",frm->prim,frm->addr,frm->dinfo);
00427 
00428    mISDN_write(midev, dmsg->data, dmsg->len, TIMEOUT_1SEC);
00429    free_msg(dmsg);
00430 
00431    return 0;
00432 }
00433 
00434 
00435 static int mypid=1;
00436 
00437 
00438 int misdn_cap_is_speech(int cap)
00439 /** Poor mans version **/
00440 {
00441    if ( (cap != INFO_CAPABILITY_DIGITAL_UNRESTRICTED) &&
00442         (cap != INFO_CAPABILITY_DIGITAL_RESTRICTED) ) return 1;
00443    return 0;
00444 }
00445 
00446 int misdn_inband_avail(struct misdn_bchannel *bc)
00447 {
00448 
00449    if (!bc->early_bconnect) {
00450       /* We have opted to never receive any available inband recorded messages */
00451       return 0;
00452    }
00453    
00454    switch (bc->progress_indicator) {
00455    case INFO_PI_INBAND_AVAILABLE:
00456    case INFO_PI_CALL_NOT_E2E_ISDN:
00457    case INFO_PI_CALLED_NOT_ISDN:
00458       return 1;
00459    default:
00460       return 0;
00461    }
00462    return 0;
00463 }
00464 
00465 
00466 static void dump_chan_list(struct misdn_stack *stack)
00467 {
00468    int i;
00469 
00470    for (i=0; i <= stack->b_num; i++) {
00471       cb_log(6, stack->port, "Idx:%d stack->cchan:%d in_use:%d Chan:%d\n",i,stack->channels[i], stack->bc[i].in_use, i+1);
00472    }
00473 }
00474 
00475 
00476 void misdn_dump_chanlist(void)
00477 {
00478    struct misdn_stack *stack=get_misdn_stack();
00479    for ( ; stack; stack=stack->next) {
00480       dump_chan_list(stack);
00481    }
00482 
00483 }
00484 
00485 static int set_chan_in_stack(struct misdn_stack *stack, int channel)
00486 {
00487 
00488    cb_log(4,stack->port,"set_chan_in_stack: %d\n",channel);
00489    dump_chan_list(stack);
00490    if (channel >=1 && channel <= MAX_BCHANS) {
00491       if (!stack->channels[channel-1])
00492          stack->channels[channel-1] = 1;
00493       else {
00494          cb_log(4,stack->port,"channel already in use:%d\n", channel );
00495          return -1;
00496       }
00497    } else {
00498       cb_log(0,stack->port,"couldn't set channel %d in\n", channel );
00499       return -1;
00500    }
00501   
00502    return 0;
00503 }
00504 
00505 
00506 
00507 static int find_free_chan_in_stack(struct misdn_stack *stack, struct misdn_bchannel *bc, int channel, int dec)
00508 {
00509    int i;
00510    int chan=0;
00511    int bnums = stack->pri ? stack->b_num : stack->b_num - 1;
00512 
00513    if (bc->channel_found)  
00514       return 0;
00515    
00516    bc->channel_found=1;
00517 
00518    cb_log(5,stack->port,"find_free_chan: req_chan:%d\n",channel);
00519 
00520    if (channel < 0 || channel > MAX_BCHANS) {
00521       cb_log(0, stack->port, " !! out of bound call to find_free_chan_in_stack! (ch:%d)\n", channel);
00522       return 0;
00523    }
00524    
00525    channel--;
00526 
00527    pthread_mutex_lock(&stack->st_lock);
00528    if (dec) {
00529       for (i = bnums; i >=0; i--) {
00530          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 D channel ;) and work with chan preselection */
00531             if (!stack->channels[i]) {
00532                cb_log (3, stack->port, " --> found chan%s: %d\n", channel>=0?" (preselected)":"", i+1);
00533                chan=i+1;
00534                break;
00535             }
00536          }
00537       }
00538    } else {
00539       for (i = 0; i <= bnums; i++) {
00540          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 D channel ;) and work with chan preselection */
00541             if (!stack->channels[i]) {
00542                cb_log (3, stack->port, " --> found chan%s: %d\n", channel>=0?" (preselected)":"", i+1);
00543                chan=i+1;
00544                break;
00545             }
00546          }
00547       }
00548    }
00549 
00550    if (!chan) {
00551       pthread_mutex_unlock(&stack->st_lock);
00552       cb_log (1, stack->port, " !! NO FREE CHAN IN STACK\n");
00553       dump_chan_list(stack);
00554       bc->out_cause = AST_CAUSE_NORMAL_CIRCUIT_CONGESTION;
00555       return -1;
00556    }  
00557 
00558    if (set_chan_in_stack(stack, chan)<0) {
00559       pthread_mutex_unlock(&stack->st_lock);
00560       cb_log (0, stack->port, "Channel Already in use:%d\n", chan);
00561       bc->out_cause = AST_CAUSE_REQUESTED_CHAN_UNAVAIL;
00562       return -1;
00563    }
00564    pthread_mutex_unlock(&stack->st_lock);
00565 
00566    bc->channel=chan;
00567    return 0;
00568 }
00569 
00570 /*!
00571  * \internal
00572  * \brief Release a B channel to the allocation pool.
00573  *
00574  * \param stack Which port stack B channel belongs.
00575  * \param channel B channel to release. (Range 1-MAX_BCHANS representing B1-Bn)
00576  *
00577  * \retval 0 on success.
00578  * \retval -1 on error.  i.e., The channel is out of range.
00579  *
00580  * \note
00581  * Must be called after clean_up_bc() to make sure that the media stream is
00582  * no longer connected.
00583  */
00584 static int empty_chan_in_stack(struct misdn_stack *stack, int channel)
00585 {
00586    if (channel<=0 || channel>MAX_BCHANS) {
00587       cb_log(0,stack?stack->port:0, "empty_chan_in_stack: cannot empty channel %d\n",channel);
00588       return -1;
00589    }
00590    
00591    cb_log (4, stack?stack->port:0, "empty_chan_in_stack: %d\n",channel); 
00592    stack->channels[channel-1] = 0;
00593    dump_chan_list(stack);
00594    return 0;
00595 }
00596 
00597 char *bc_state2str(enum bchannel_state state) {
00598    int i;
00599    
00600    struct bchan_state_s {
00601       char *n;
00602       enum bchannel_state s;
00603    } states[] = {
00604       {"BCHAN_CLEANED", BCHAN_CLEANED },
00605       {"BCHAN_EMPTY", BCHAN_EMPTY},
00606       {"BCHAN_SETUP", BCHAN_SETUP},
00607       {"BCHAN_SETUPED", BCHAN_SETUPED},
00608       {"BCHAN_ACTIVE", BCHAN_ACTIVE},
00609       {"BCHAN_ACTIVATED", BCHAN_ACTIVATED},
00610       {"BCHAN_BRIDGE",  BCHAN_BRIDGE},
00611       {"BCHAN_BRIDGED", BCHAN_BRIDGED},
00612       {"BCHAN_RELEASE", BCHAN_RELEASE},
00613       {"BCHAN_RELEASED", BCHAN_RELEASED},
00614       {"BCHAN_CLEAN", BCHAN_CLEAN},
00615       {"BCHAN_CLEAN_REQUEST", BCHAN_CLEAN_REQUEST},
00616       {"BCHAN_ERROR", BCHAN_ERROR}
00617    };
00618    
00619    for (i=0; i< sizeof(states)/sizeof(struct bchan_state_s); i++)
00620       if ( states[i].s == state)
00621          return states[i].n;
00622 
00623    return "UNKNOWN";
00624 }
00625 
00626 void bc_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00627 {
00628    cb_log(5,bc->port,"BC_STATE_CHANGE: l3id:%x from:%s to:%s\n",
00629       bc->l3_id,
00630           bc_state2str(bc->bc_state),
00631           bc_state2str(state) );
00632    
00633    switch (state) {
00634       case BCHAN_ACTIVATED:
00635          if (bc->next_bc_state ==  BCHAN_BRIDGED) {
00636             misdn_join_conf(bc, bc->conf_id);
00637             bc->next_bc_state = BCHAN_EMPTY;
00638             return;
00639          }
00640       default:
00641          bc->bc_state=state;
00642          break;
00643    }
00644 }
00645 
00646 static void bc_next_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00647 {
00648    cb_log(5,bc->port,"BC_NEXT_STATE_CHANGE: from:%s to:%s\n",
00649           bc_state2str(bc->next_bc_state),
00650           bc_state2str(state) );
00651 
00652    bc->next_bc_state=state;
00653 }
00654 
00655 /*!
00656  * \internal
00657  * \brief Empty the B channel record of most call data.
00658  *
00659  * \param bc B channel record to empty of most call data.
00660  *
00661  * \return Nothing
00662  *
00663  * \note
00664  * Sets the last_used time and must be called before clearing bc->in_use.
00665  */
00666 static void empty_bc(struct misdn_bchannel *bc)
00667 {
00668    bc->dummy=0;
00669 
00670    bc->bframe_len=0;
00671 
00672    bc->cw= 0;
00673 
00674    bc->dec=0;
00675    bc->channel = 0;
00676 
00677    bc->sending_complete = 0;
00678 
00679    bc->restart_channel=0;
00680    
00681    bc->conf_id = 0;
00682 
00683    bc->need_more_infos = 0;
00684    
00685    bc->send_dtmf=0;
00686    bc->nodsp=0;
00687    bc->nojitter=0;
00688 
00689    bc->time_usec=0;
00690    
00691    bc->rxgain=0;
00692    bc->txgain=0;
00693 
00694    bc->crypt=0;
00695    bc->curptx=0; bc->curprx=0;
00696    
00697    bc->crypt_key[0] = 0;
00698    
00699    bc->generate_tone=0;
00700    bc->tone_cnt=0;
00701   
00702    bc->dnumplan=NUMPLAN_UNKNOWN;
00703    bc->onumplan=NUMPLAN_UNKNOWN;
00704    bc->rnumplan=NUMPLAN_UNKNOWN;
00705    bc->cpnnumplan=NUMPLAN_UNKNOWN;
00706    
00707 
00708    bc->active = 0;
00709 
00710    bc->early_bconnect = 1;
00711    
00712 #ifdef MISDN_1_2
00713    *bc->pipeline = 0;
00714 #else
00715    bc->ec_enable = 0;
00716    bc->ec_deftaps = 128;
00717 #endif
00718 
00719    bc->AOCD_need_export = 0;
00720 
00721    bc->orig=0;
00722   
00723    bc->cause = AST_CAUSE_NORMAL_CLEARING;
00724    bc->out_cause = AST_CAUSE_NORMAL_CLEARING;
00725    bc->pres = 0;  /* allowed */
00726    
00727    bc->evq=EVENT_NOTHING;
00728 
00729    bc->progress_coding=0;
00730    bc->progress_location=0;
00731    bc->progress_indicator=0;
00732    
00733 /** Set Default Bearer Caps **/
00734    bc->capability=INFO_CAPABILITY_SPEECH;
00735    bc->law=INFO_CODEC_ALAW;
00736    bc->mode=0;
00737    bc->rate=0x10;
00738    bc->user1=0;
00739    bc->urate=0;
00740    
00741    bc->hdlc=0;
00742    
00743    
00744    bc->info_dad[0] = 0;
00745    bc->display[0] = 0;
00746    bc->infos_pending[0] = 0;
00747    bc->cad[0] = 0;
00748    bc->oad[0] = 0;
00749    bc->dad[0] = 0;
00750    bc->rad[0] = 0;
00751    bc->orig_dad[0] = 0;
00752    bc->uu[0]=0;
00753    bc->uulen=0;
00754    
00755    bc->fac_in.Function = Fac_None;
00756    bc->fac_out.Function = Fac_None;
00757    
00758    bc->te_choose_channel = 0;
00759    bc->channel_found= 0;
00760 
00761    gettimeofday(&bc->last_used, NULL);
00762 }
00763 
00764 
00765 static int clean_up_bc(struct misdn_bchannel *bc)
00766 {
00767    int ret=0;
00768    unsigned char buff[32];
00769    struct misdn_stack * stack;
00770 
00771    cb_log(3, bc?bc->port:0, "$$$ CLEANUP CALLED pid:%d\n", bc?bc->pid:-1);
00772    
00773    if (!bc  ) return -1;
00774    stack=get_stack_by_bc(bc);
00775    
00776    if (!stack) return -1;
00777    
00778    switch (bc->bc_state ) {
00779    case BCHAN_CLEANED:
00780       cb_log(5, stack->port, "$$$ Already cleaned up bc with stid :%x\n", bc->b_stid);
00781       return -1;
00782       
00783    default:
00784       break;
00785    }
00786    
00787    cb_log(2, stack->port, "$$$ Cleaning up bc with stid :%x pid:%d\n", bc->b_stid, bc->pid);
00788    
00789    manager_ec_disable(bc);
00790 
00791    manager_bchannel_deactivate(bc);
00792 
00793    mISDN_write_frame(stack->midev, buff, bc->layer_id|FLG_MSG_TARGET|FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
00794    
00795    bc->b_stid = 0;
00796    bc_state_change(bc, BCHAN_CLEANED);
00797    
00798    return ret;
00799 }
00800 
00801 
00802 
00803 static void clear_l3(struct misdn_stack *stack)
00804 {
00805    int i;
00806 
00807    for (i=0; i<=stack->b_num; i++) {
00808       if (global_state == MISDN_INITIALIZED)  {
00809          cb_event(EVENT_CLEANUP, &stack->bc[i], NULL); 
00810          empty_bc(&stack->bc[i]);
00811          clean_up_bc(&stack->bc[i]);
00812          empty_chan_in_stack(stack, i + 1);
00813          stack->bc[i].in_use = 0;
00814       }
00815       
00816    } 
00817 }
00818 
00819 static int new_te_id = 0;
00820 
00821 #define MAXPROCS 0x100
00822 
00823 static int misdn_lib_get_l1_down(struct misdn_stack *stack)
00824 {
00825    /* Pull Up L1 */ 
00826    iframe_t act;
00827    act.prim = PH_DEACTIVATE | REQUEST; 
00828    act.addr = stack->lower_id|FLG_MSG_DOWN;
00829    act.dinfo = 0;
00830    act.len = 0;
00831 
00832    cb_log(1, stack->port, "SENDING PH_DEACTIVATE | REQ\n");
00833    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00834 }
00835 
00836 
00837 static int misdn_lib_get_l2_down(struct misdn_stack *stack)
00838 {
00839    
00840    if (stack->ptp && (stack->nt) ) {
00841       msg_t *dmsg;
00842       /* L2 */
00843       dmsg = create_l2msg(DL_RELEASE| REQUEST, 0, 0);
00844       
00845       pthread_mutex_lock(&stack->nstlock);
00846       if (stack->nst.manager_l3(&stack->nst, dmsg))
00847          free_msg(dmsg);
00848       pthread_mutex_unlock(&stack->nstlock);
00849    } else {
00850       iframe_t act;
00851       
00852       act.prim = DL_RELEASE| REQUEST;
00853       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00854       
00855       act.dinfo = 0;
00856       act.len = 0;
00857       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00858    }
00859    
00860    return 0;
00861 }
00862 
00863 
00864 static int misdn_lib_get_l1_up(struct misdn_stack *stack)
00865 {
00866    /* Pull Up L1 */ 
00867    iframe_t act;
00868    act.prim = PH_ACTIVATE | REQUEST; 
00869    act.addr = (stack->upper_id | FLG_MSG_DOWN)  ;
00870 
00871    
00872    act.dinfo = 0;
00873    act.len = 0;
00874 
00875    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00876 
00877 }
00878 
00879 int misdn_lib_get_l2_up(struct misdn_stack *stack)
00880 {
00881    
00882    if (stack->ptp && (stack->nt) ) {
00883       msg_t *dmsg;
00884       /* L2 */
00885       dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
00886       
00887       pthread_mutex_lock(&stack->nstlock);
00888       if (stack->nst.manager_l3(&stack->nst, dmsg))
00889          free_msg(dmsg);
00890       pthread_mutex_unlock(&stack->nstlock);
00891    } else {
00892       iframe_t act;
00893       
00894       act.prim = DL_ESTABLISH | REQUEST;
00895       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00896       
00897       act.dinfo = 0;
00898       act.len = 0;
00899       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00900    }
00901    
00902    return 0;
00903 }
00904 
00905 #if 0
00906 static int misdn_lib_get_l2_te_ptp_up(struct misdn_stack *stack)
00907 {
00908    iframe_t act;
00909       
00910    act.prim = DL_ESTABLISH | REQUEST;
00911    act.addr = (stack->upper_id  & ~LAYER_ID_MASK) | 3 | FLG_MSG_DOWN;
00912       
00913    act.dinfo = 0;
00914    act.len = 0;
00915    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00916    return 0;
00917 }
00918 #endif
00919 
00920 static int misdn_lib_get_short_status(struct misdn_stack *stack)
00921 {
00922    iframe_t act;
00923    
00924    
00925    act.prim = MGR_SHORTSTATUS | REQUEST; 
00926    
00927    act.addr = (stack->upper_id | MSG_BROADCAST)  ;
00928 
00929    act.dinfo = SSTATUS_BROADCAST_BIT | SSTATUS_ALL;
00930    
00931    act.len = 0;
00932    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00933 }
00934 
00935 
00936 
00937 static int create_process(int midev, struct misdn_bchannel *bc)
00938 {
00939    iframe_t ncr;
00940    int l3_id;
00941    int proc_id;
00942    struct misdn_stack *stack;
00943 
00944    stack = get_stack_by_bc(bc);
00945    if (stack->nt) {
00946       if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, 0) < 0) {
00947          return -1;
00948       }
00949       cb_log(4, stack->port, " -->  found channel: %d\n", bc->channel);
00950 
00951       for (proc_id = 0; proc_id < MAXPROCS; ++proc_id) {
00952          if (stack->procids[proc_id] == 0) {
00953             break;
00954          }
00955       }  /* end for */
00956       if (proc_id == MAXPROCS) {
00957          cb_log(0, stack->port, "Couldn't Create New ProcId.\n");
00958          return -1;
00959       }
00960 
00961       stack->procids[proc_id] = 1;
00962 
00963       l3_id = 0xff00 | proc_id;
00964       bc->l3_id = l3_id;
00965       cb_log(3, stack->port, " --> new_l3id %x\n", l3_id);
00966    } else {
00967       if ((stack->pri && stack->ptp) || bc->te_choose_channel) {
00968          /* we know exactly which channels are in use */
00969          if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, bc->dec) < 0) {
00970             return -1;
00971          }
00972          cb_log(2, stack->port, " -->  found channel: %d\n", bc->channel);
00973       } else {
00974          /* other phones could have made a call also on this port (ptmp) */
00975          bc->channel = 0xff;
00976       }
00977 
00978       /* if we are in te-mode, we need to create a process first */
00979       if (++new_te_id > 0xffff) {
00980          new_te_id = 0x0001;
00981       }
00982 
00983       l3_id = (entity << 16) | new_te_id;
00984       bc->l3_id = l3_id;
00985       cb_log(3, stack->port, "--> new_l3id %x\n", l3_id);
00986 
00987       /* send message */
00988       ncr.prim = CC_NEW_CR | REQUEST;
00989       ncr.addr = (stack->upper_id | FLG_MSG_DOWN);
00990       ncr.dinfo = l3_id;
00991       ncr.len = 0;
00992       mISDN_write(midev, &ncr, mISDN_HEADER_LEN + ncr.len, TIMEOUT_1SEC);
00993    }
00994 
00995    return l3_id;
00996 }
00997 
00998 
00999 void misdn_lib_setup_bc(struct misdn_bchannel *bc)
01000 {
01001    clean_up_bc(bc);
01002    setup_bc(bc);
01003 }
01004 
01005 
01006 int setup_bc(struct misdn_bchannel *bc)
01007 {
01008    unsigned char buff[1025];
01009    int midev;
01010    int channel;
01011    int b_stid;
01012    int i;
01013    mISDN_pid_t pid;
01014    int ret;
01015 
01016    struct misdn_stack *stack=get_stack_by_bc(bc);
01017 
01018    if (!stack) {
01019       cb_log(0, bc->port, "setup_bc: NO STACK FOUND!!\n");
01020       return -1;
01021    }
01022    
01023    midev = stack->midev;
01024    channel = bc->channel - 1 - (bc->channel > 16);
01025    b_stid = stack->b_stids[channel >= 0 ? channel : 0];
01026 
01027    switch (bc->bc_state) {
01028       case BCHAN_CLEANED:
01029          break;
01030       default:
01031          cb_log(4, stack->port, "$$$ bc already setup stid :%x (state:%s)\n", b_stid, bc_state2str(bc->bc_state) );
01032          return -1;
01033    }
01034    
01035    cb_log(5, stack->port, "$$$ Setting up bc with stid :%x\n", b_stid);
01036    
01037    /*check if the b_stid is already initialized*/
01038    for (i=0; i <= stack->b_num; i++) {
01039       if (stack->bc[i].b_stid == b_stid) {
01040          cb_log(0, bc->port, "setup_bc: b_stid:%x already in use !!!\n", b_stid);
01041          return -1;
01042       }
01043    }
01044    
01045    if (b_stid <= 0) {
01046       cb_log(0, stack->port," -- Stid <=0 at the moment in channel:%d\n",channel);
01047       
01048       bc_state_change(bc,BCHAN_ERROR);
01049       return 1;
01050    }
01051 
01052    bc->b_stid = b_stid;
01053 
01054    {
01055       layer_info_t li;
01056       memset(&li, 0, sizeof(li));
01057     
01058       li.object_id = -1;
01059       li.extentions = 0;
01060       
01061       li.st = bc->b_stid; /*  given idx */
01062 
01063 
01064 #define MISDN_DSP
01065 #ifndef MISDN_DSP
01066       bc->nodsp=1;
01067 #endif
01068       if ( bc->hdlc || bc->nodsp) {
01069          cb_log(4, stack->port,"setup_bc: without dsp\n");
01070          { 
01071             int l = sizeof(li.name);
01072             strncpy(li.name, "B L3", l);
01073             li.name[l-1] = 0;
01074          }
01075          li.pid.layermask = ISDN_LAYER((3));
01076          li.pid.protocol[3] = ISDN_PID_L3_B_USER;
01077          
01078          bc->layer=3;
01079       } else {
01080          cb_log(4, stack->port,"setup_bc: with dsp\n");
01081          { 
01082             int l = sizeof(li.name);
01083             strncpy(li.name, "B L4", l);
01084             li.name[l-1] = 0;
01085          }
01086          li.pid.layermask = ISDN_LAYER((4));
01087          li.pid.protocol[4] = ISDN_PID_L4_B_USER;
01088 
01089          bc->layer=4;
01090       }  
01091       
01092       ret = mISDN_new_layer(midev, &li);
01093       if (ret ) {
01094          cb_log(0, stack->port,"New Layer Err: %d %s\n",ret,strerror(errno));
01095 
01096          bc_state_change(bc,BCHAN_ERROR);
01097          return(-EINVAL);
01098       }
01099       
01100       bc->layer_id = li.id;
01101    }
01102    
01103    memset(&pid, 0, sizeof(pid));
01104    
01105    
01106    
01107    cb_log(4, stack->port," --> Channel is %d\n", bc->channel);
01108    
01109    if (bc->nodsp) {
01110       cb_log(2, stack->port," --> TRANSPARENT Mode (no DSP, no HDLC)\n");
01111       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01112       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01113       pid.protocol[3] = ISDN_PID_L3_B_USER;
01114       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3));
01115       
01116    } else if ( bc->hdlc ) {
01117       cb_log(2, stack->port," --> HDLC Mode\n");
01118       pid.protocol[1] = ISDN_PID_L1_B_64HDLC ;
01119       pid.protocol[2] = ISDN_PID_L2_B_TRANS  ;
01120       pid.protocol[3] = ISDN_PID_L3_B_USER;
01121       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) ;
01122    } else {
01123       cb_log(2, stack->port," --> TRANSPARENT Mode\n");
01124       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01125       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01126       pid.protocol[3] = ISDN_PID_L3_B_DSP;
01127       pid.protocol[4] = ISDN_PID_L4_B_USER;
01128       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) | ISDN_LAYER((4));
01129       
01130    } 
01131 
01132    ret = mISDN_set_stack(midev, bc->b_stid, &pid);
01133 
01134    if (ret){
01135       cb_log(0, stack->port,"$$$ Set Stack Err: %d %s\n",ret,strerror(errno));
01136       
01137       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01138       
01139       bc_state_change(bc,BCHAN_ERROR);
01140       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01141       return(-EINVAL);
01142    }
01143 
01144    ret = mISDN_get_setstack_ind(midev, bc->layer_id);
01145 
01146    if (ret) {
01147       cb_log(0, stack->port,"$$$ Set StackIND Err: %d %s\n",ret,strerror(errno));
01148       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01149       
01150       bc_state_change(bc,BCHAN_ERROR);
01151       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01152       return(-EINVAL);
01153    }
01154 
01155    ret = mISDN_get_layerid(midev, bc->b_stid, bc->layer) ;
01156 
01157    bc->addr = ret>0? ret : 0;
01158 
01159    if (!bc->addr) {
01160       cb_log(0, stack->port,"$$$ Get Layerid Err: %d %s\n",ret,strerror(errno));
01161       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01162       
01163       bc_state_change(bc,BCHAN_ERROR);
01164       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01165       return (-EINVAL);
01166    }
01167 
01168    manager_bchannel_activate(bc);
01169    
01170    bc_state_change(bc,BCHAN_ACTIVATED);
01171 
01172    return 0;
01173 }
01174 
01175 
01176 
01177 /** IFACE **/
01178 static int init_bc(struct misdn_stack *stack, struct misdn_bchannel *bc, int midev, int port, int bidx, char *msn, int firsttime)
01179 {
01180    unsigned char buff[1025] = "";
01181    iframe_t *frm = (iframe_t *)buff;
01182    int ret;
01183   
01184    if (!bc) return -1;
01185   
01186    cb_log(8, port, "Init.BC %d.\n",bidx);
01187    
01188    memset(bc, 0,sizeof(struct misdn_bchannel));
01189 
01190    bc->send_lock=malloc(sizeof(struct send_lock));
01191    if (!bc->send_lock) {
01192       return -1;
01193    }
01194    pthread_mutex_init(&bc->send_lock->lock, NULL);
01195    
01196    if (msn) {
01197       int l = sizeof(bc->msn);
01198       strncpy(bc->msn,msn, l);
01199       bc->msn[l-1] = 0;
01200    }
01201    
01202    
01203    empty_bc(bc);
01204    bc_state_change(bc, BCHAN_CLEANED);
01205    
01206    bc->port=stack->port;
01207    bc->nt=stack->nt?1:0;
01208    bc->pri=stack->pri;
01209    
01210    {
01211       ibuffer_t* ibuf= init_ibuffer(MISDN_IBUF_SIZE);
01212 
01213       if (!ibuf) return -1;
01214       
01215       clear_ibuffer( ibuf);
01216       
01217       ibuf->rsem=malloc(sizeof(sem_t));
01218       if (!ibuf->rsem) {
01219          return -1;
01220       }
01221       
01222       bc->astbuf=ibuf;
01223 
01224       if (sem_init(ibuf->rsem,1,0)<0)
01225          sem_init(ibuf->rsem,0,0);
01226       
01227    }
01228    
01229    {
01230       stack_info_t *stinf;
01231       ret = mISDN_get_stack_info(midev, stack->port, buff, sizeof(buff));
01232       if (ret < 0) {
01233          cb_log(0, port, "%s: Cannot get stack info for this port. (ret=%d)\n", __FUNCTION__, ret);
01234          return -1;
01235       }
01236     
01237       stinf = (stack_info_t *)&frm->data.p;
01238     
01239       cb_log(8, port, " --> Child %x\n",stinf->child[bidx]);
01240    }
01241   
01242    return 0;
01243 }
01244 
01245 
01246 
01247 static struct misdn_stack *stack_init(int midev, int port, int ptp)
01248 {
01249    int ret;
01250    unsigned char buff[1025];
01251    iframe_t *frm = (iframe_t *)buff;
01252    stack_info_t *stinf;
01253    int i; 
01254    layer_info_t li;
01255 
01256    struct misdn_stack *stack = malloc(sizeof(struct misdn_stack));
01257    if (!stack ) return NULL;
01258 
01259 
01260    cb_log(8, port, "Init. Stack.\n");
01261   
01262    memset(stack,0,sizeof(struct misdn_stack));
01263   
01264    for (i=0; i<MAX_BCHANS + 1; i++ ) stack->channels[i]=0;
01265    
01266    stack->port=port;
01267    stack->midev=midev;
01268    stack->ptp=ptp;
01269   
01270    stack->holding=NULL;
01271    stack->pri=0;
01272   
01273    msg_queue_init(&stack->downqueue);
01274    msg_queue_init(&stack->upqueue);
01275 
01276    pthread_mutex_init(&stack->st_lock, NULL);
01277   
01278    /* query port's requirements */
01279    ret = mISDN_get_stack_info(midev, port, buff, sizeof(buff));
01280    if (ret < 0) {
01281       cb_log(0, port, "%s: Cannot get stack info for this port. (ret=%d)\n", __FUNCTION__, ret);
01282       return(NULL);
01283    }
01284   
01285    stinf = (stack_info_t *)&frm->data.p;
01286 
01287    stack->d_stid = stinf->id;
01288    stack->b_num = stinf->childcnt;
01289 
01290    for (i=0; i<=stinf->childcnt; i++)
01291       stack->b_stids[i] = stinf->child[i];
01292   
01293    switch(stinf->pid.protocol[0] & ~ISDN_PID_FEATURE_MASK) {
01294    case ISDN_PID_L0_TE_S0:
01295       stack->nt=0;
01296       break;
01297    case ISDN_PID_L0_NT_S0:
01298       cb_log(8, port, "NT Stack\n");
01299 
01300       stack->nt=1;
01301       break;
01302    case ISDN_PID_L0_TE_E1:
01303       cb_log(8, port, "TE S2M Stack\n");
01304       stack->nt=0;
01305       stack->pri=1;
01306       break;
01307    case ISDN_PID_L0_NT_E1:
01308       cb_log(8, port, "TE S2M Stack\n");
01309       stack->nt=1;
01310       stack->pri=1;
01311       
01312       break;
01313    default:
01314       cb_log(0, port, "this is a unknown port type 0x%08x\n", stinf->pid.protocol[0]);
01315 
01316    }
01317 
01318    if (!stack->nt) {
01319       if (stinf->pid.protocol[2] & ISDN_PID_L2_DF_PTP ) { 
01320          stack->ptp = 1;
01321       } else {
01322          stack->ptp = 0;
01323       }
01324    }
01325    
01326    {
01327       int ret;
01328       int nt=stack->nt;
01329 
01330       cb_log(8, port, "Init. Stack.\n");
01331       
01332       memset(&li, 0, sizeof(li));
01333       {
01334          int l = sizeof(li.name);
01335          strncpy(li.name,nt?"net l2":"user l4", l);
01336          li.name[l-1] = 0;
01337       }
01338       li.object_id = -1;
01339       li.extentions = 0;
01340       li.pid.protocol[nt?2:4] = nt?ISDN_PID_L2_LAPD_NET:ISDN_PID_L4_CAPI20;
01341       li.pid.layermask = ISDN_LAYER((nt?2:4));
01342       li.st = stack->d_stid;
01343       
01344       
01345       ret = mISDN_new_layer(midev, &li);
01346       if (ret) {
01347          cb_log(0, port, "%s: Cannot add layer %d to this port.\n", __FUNCTION__, nt?2:4);
01348          return(NULL);
01349       }
01350       
01351       
01352       stack->upper_id = li.id;
01353       ret = mISDN_register_layer(midev, stack->d_stid, stack->upper_id);
01354       if (ret)
01355       {
01356          cb_log(0,port,"Cannot register layer %d of this port.\n", nt?2:4);
01357          return(NULL);
01358       }
01359       
01360       stack->lower_id = mISDN_get_layerid(midev, stack->d_stid, nt?1:3); 
01361       if (stack->lower_id < 0) {
01362          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, nt?1:3);
01363          return(NULL);
01364       }
01365       
01366       stack->upper_id = mISDN_get_layerid(midev, stack->d_stid, nt?2:4);
01367       if (stack->upper_id < 0) {
01368          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, 2);
01369          return(NULL);
01370       }
01371       
01372       cb_log(8, port, "NT Stacks upper_id %x\n",stack->upper_id);
01373       
01374       
01375       /* create nst (nt-mode only) */
01376       if (nt) {
01377          
01378          memset(&stack->nst, 0, sizeof(net_stack_t));
01379          memset(&stack->mgr, 0, sizeof(manager_t));
01380     
01381          stack->mgr.nst = &stack->nst;
01382          stack->nst.manager = &stack->mgr;
01383     
01384          stack->nst.l3_manager = handle_event_nt;
01385          stack->nst.device = midev;
01386          stack->nst.cardnr = port;
01387          stack->nst.d_stid = stack->d_stid;
01388     
01389          stack->nst.feature = FEATURE_NET_HOLD;
01390          if (stack->ptp)
01391             stack->nst.feature |= FEATURE_NET_PTP;
01392          if (stack->pri)
01393             stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
01394          
01395          stack->nst.l1_id = stack->lower_id;
01396          stack->nst.l2_id = stack->upper_id;
01397          
01398          msg_queue_init(&stack->nst.down_queue);
01399          pthread_mutex_init(&stack->nstlock, NULL);
01400          
01401          Isdnl2Init(&stack->nst);
01402          Isdnl3Init(&stack->nst);
01403          
01404       } 
01405       
01406       if (!stack->nt) {
01407          /*assume L1 is up, we'll get DEACTIVATES soon, for non
01408           * up L1s*/
01409          stack->l1link=0;
01410       }
01411       stack->l1link=0;
01412       stack->l2link=0;
01413 #if 0 
01414       if (!stack->nt) {
01415          misdn_lib_get_short_status(stack);
01416       } else {
01417          misdn_lib_get_l1_up(stack);
01418          if (!stack->ptp) misdn_lib_get_l1_up(stack);
01419          misdn_lib_get_l2_up(stack);
01420       }
01421 #endif
01422 
01423       misdn_lib_get_short_status(stack);
01424       misdn_lib_get_l1_up(stack);
01425       misdn_lib_get_l2_up(stack); 
01426       
01427    }
01428 
01429    cb_log(8,0,"stack_init: port:%d lowerId:%x  upperId:%x\n",stack->port,stack->lower_id, stack->upper_id);
01430    
01431    return stack;
01432 }
01433 
01434 
01435 static void stack_destroy(struct misdn_stack *stack)
01436 {
01437    char buf[1024];
01438    if (!stack) return;
01439 
01440    if (stack->nt) {
01441       pthread_mutex_destroy(&stack->nstlock);
01442       cleanup_Isdnl2(&stack->nst);
01443       cleanup_Isdnl3(&stack->nst);
01444    }
01445   
01446    if (stack->lower_id) 
01447       mISDN_write_frame(stack->midev, buf, stack->lower_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01448 
01449    if (stack->upper_id) 
01450       mISDN_write_frame(stack->midev, buf, stack->upper_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01451 
01452    pthread_mutex_destroy(&stack->st_lock);
01453 }
01454 
01455 
01456 static struct misdn_stack * find_stack_by_addr(int  addr)
01457 {
01458    struct misdn_stack *stack;
01459    
01460    for (stack=glob_mgr->stack_list;
01461         stack;
01462         stack=stack->next) {
01463       if ( (stack->upper_id&STACK_ID_MASK) == (addr&STACK_ID_MASK)) return stack;
01464 
01465    }
01466   
01467    return NULL;
01468 }
01469 
01470 
01471 static struct misdn_stack * find_stack_by_port(int port)
01472 {
01473    struct misdn_stack *stack;
01474   
01475    for (stack=glob_mgr->stack_list;
01476         stack;
01477         stack=stack->next) 
01478       if (stack->port == port) return stack;
01479   
01480    return NULL;
01481 }
01482 
01483 static struct misdn_stack * find_stack_by_mgr(manager_t* mgr_nt)
01484 {
01485    struct misdn_stack *stack;
01486   
01487    for (stack=glob_mgr->stack_list;
01488         stack;
01489         stack=stack->next) 
01490       if ( &stack->mgr == mgr_nt) return stack;
01491   
01492    return NULL;
01493 }
01494 
01495 static struct misdn_bchannel *find_bc_by_masked_l3id(struct misdn_stack *stack, unsigned long l3id, unsigned long mask)
01496 {
01497    int i;
01498 
01499    for (i = 0; i <= stack->b_num; i++) {
01500       if (stack->bc[i].in_use && (stack->bc[i].l3_id & mask) == (l3id & mask)) {
01501          return &stack->bc[i];
01502       }
01503    }
01504    return stack_holder_find(stack,l3id);
01505 }
01506 
01507 
01508 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id)
01509 {
01510    int i;
01511 
01512    for (i = 0; i <= stack->b_num; i++) {
01513       if (stack->bc[i].in_use && stack->bc[i].l3_id == l3id) {
01514          return &stack->bc[i];
01515       }
01516    }
01517    return stack_holder_find(stack,l3id);
01518 }
01519 
01520 static struct misdn_bchannel *find_bc_by_addr(unsigned long addr)
01521 {
01522    struct misdn_stack *stack;
01523    int i;
01524 
01525    for (stack = glob_mgr->stack_list; stack; stack = stack->next) {
01526       for (i = 0; i <= stack->b_num; i++) {
01527          if (stack->bc[i].in_use
01528             && ((stack->bc[i].addr & STACK_ID_MASK) == (addr & STACK_ID_MASK)
01529                || stack->bc[i].layer_id == addr)) {
01530             return &stack->bc[i];
01531          }
01532       }
01533    }
01534    
01535    return NULL;
01536 }
01537 
01538 static struct misdn_bchannel *find_bc_by_confid(unsigned long confid)
01539 {
01540    struct misdn_stack *stack;
01541    int i;
01542    
01543    for (stack = glob_mgr->stack_list; stack; stack = stack->next) {
01544       for (i = 0; i <= stack->b_num; i++) {
01545          if (stack->bc[i].in_use && stack->bc[i].conf_id == confid) {
01546             return &stack->bc[i];
01547          }
01548       }
01549    }
01550    return NULL;
01551 }
01552 
01553 
01554 static struct misdn_bchannel *find_bc_by_channel(int port, int channel)
01555 {
01556    struct misdn_stack *stack = find_stack_by_port(port);
01557    int i;
01558 
01559    if (!stack) {
01560       return NULL;
01561    }
01562    
01563    for (i = 0; i <= stack->b_num; i++) {
01564       if (stack->bc[i].in_use && stack->bc[i].channel == channel) {
01565          return &stack->bc[i];
01566       }
01567    }
01568       
01569    return NULL;
01570 }
01571 
01572 
01573 
01574 
01575 
01576 static int handle_event ( struct misdn_bchannel *bc, enum event_e event, iframe_t *frm)
01577 {
01578    struct misdn_stack *stack=get_stack_by_bc(bc);
01579    
01580    if (!stack->nt) {
01581       
01582       switch (event) {
01583 
01584       case EVENT_CONNECT_ACKNOWLEDGE:
01585          setup_bc(bc);
01586 
01587          if ( *bc->crypt_key ) {
01588             cb_log(4, stack->port, "ENABLING BLOWFISH channel:%d oad%d:%s dad%d:%s\n", bc->channel, bc->onumplan,bc->oad, bc->dnumplan,bc->dad);
01589             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01590          }
01591 
01592          if (misdn_cap_is_speech(bc->capability)) {
01593             if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
01594             manager_ec_enable(bc);
01595 
01596             if ( bc->txgain != 0 ) {
01597                cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
01598                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
01599             }
01600             if ( bc->rxgain != 0 ) {
01601                cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
01602                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
01603             }
01604          }
01605 
01606          break;
01607       case EVENT_CONNECT:
01608 
01609          if ( *bc->crypt_key ) {
01610             cb_log(4, stack->port, "ENABLING BLOWFISH channel:%d oad%d:%s dad%d:%s\n", bc->channel, bc->onumplan,bc->oad, bc->dnumplan,bc->dad);
01611             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01612          }
01613       case EVENT_ALERTING:
01614       case EVENT_PROGRESS:
01615       case EVENT_PROCEEDING:
01616       case EVENT_SETUP_ACKNOWLEDGE:
01617       case EVENT_SETUP:
01618       {
01619          if (bc->channel == 0xff || bc->channel<=0)
01620             bc->channel=0;
01621 
01622          if (find_free_chan_in_stack(stack, bc, bc->channel, 0)<0){
01623             if (!stack->pri && !stack->ptp)  {
01624                bc->cw=1;
01625                break;
01626             }
01627 
01628             if (!bc->channel)
01629                cb_log(0, stack->port, "Any Channel Requested, but we have no more!!\n");
01630             else 
01631                cb_log(0, stack->port,
01632                   "Requested Channel Already in Use releasing this call with cause %d!!!!\n",
01633                   bc->out_cause);
01634 
01635             /* when the channel is already in use, we can't
01636              * simply clear it, we need to make sure that 
01637              * it will still be marked as in_use in the 
01638              * available channels list.*/
01639             bc->channel=0;
01640 
01641             misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
01642             return -1;
01643          }
01644       }
01645 
01646       setup_bc(bc);
01647       break;
01648 
01649       case EVENT_RELEASE_COMPLETE:
01650       case EVENT_RELEASE:
01651          break;
01652       default:
01653          break;
01654       }
01655    } else {    /** NT MODE **/
01656       
01657    }
01658    return 0;
01659 }
01660 
01661 static int handle_cr ( struct misdn_stack *stack, iframe_t *frm)
01662 {
01663    struct misdn_bchannel *bc;
01664 
01665    if (!stack) return -1;
01666   
01667    switch (frm->prim) {
01668    case CC_NEW_CR|INDICATION:
01669       cb_log(7, stack->port, " --> lib: NEW_CR Ind with l3id:%x on this port.\n",frm->dinfo);
01670 
01671       bc = misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01672       if (!bc) {
01673          cb_log(0, stack->port, " --> !! lib: No free channel!\n");
01674          return -1;
01675       }
01676   
01677       cb_log(7, stack->port, " --> new_process: New L3Id: %x\n",frm->dinfo);
01678       bc->l3_id=frm->dinfo;
01679       return 1;
01680    case CC_NEW_CR|CONFIRM:
01681       return 1;
01682    case CC_NEW_CR|REQUEST:
01683       return 1;
01684    case CC_RELEASE_CR|REQUEST:
01685       return 1;
01686    case CC_RELEASE_CR|CONFIRM:
01687       break;
01688    case CC_RELEASE_CR|INDICATION:
01689       cb_log(4, stack->port, " --> lib: RELEASE_CR Ind with l3id:%x\n",frm->dinfo);
01690       {
01691          struct misdn_bchannel *bc=find_bc_by_l3id(stack, frm->dinfo);
01692          struct misdn_bchannel dummybc;
01693       
01694          if (!bc) {
01695             cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
01696             misdn_make_dummy(&dummybc, stack->port, frm->dinfo, stack->nt, 0);
01697             
01698             bc=&dummybc; 
01699          }
01700       
01701          if (bc) {
01702             int channel = bc->channel;
01703             cb_log(4, stack->port, " --> lib: CLEANING UP l3id: %x\n",frm->dinfo);
01704 
01705             /*bc->pid = 0;*/
01706             bc->need_disconnect=0;
01707             bc->need_release=0;
01708             bc->need_release_complete=0;
01709 
01710             cb_event(EVENT_CLEANUP, bc, glob_mgr->user_data);
01711 
01712             empty_bc(bc);
01713             clean_up_bc(bc);
01714 
01715             if (channel>0)
01716                empty_chan_in_stack(stack,channel);
01717             bc->in_use=0;
01718 
01719             dump_chan_list(stack);
01720 
01721             if (bc->stack_holder) {
01722                cb_log(4,stack->port, "REMOVING Holder\n");
01723                stack_holder_remove( stack, bc);
01724                free(bc);
01725             }
01726          }
01727          else {
01728             if (stack->nt) 
01729                cb_log(4, stack->port, "BC with dinfo: %x  not found.. (prim was %x and addr %x)\n",frm->dinfo, frm->prim, frm->addr);
01730          }
01731       
01732          return 1;
01733       }
01734       break;
01735    }
01736   
01737    return 0;
01738 }
01739 
01740 
01741 /* Empties bc if it's reserved (no SETUP out yet) */
01742 void misdn_lib_release(struct misdn_bchannel *bc)
01743 {
01744    int channel;
01745    struct misdn_stack *stack=get_stack_by_bc(bc);
01746 
01747    if (!stack) {
01748       cb_log(1,0,"misdn_release: No Stack found\n");
01749       return;
01750    }
01751    
01752    channel = bc->channel;
01753    empty_bc(bc);
01754    clean_up_bc(bc);
01755    if (channel > 0) {
01756       empty_chan_in_stack(stack, channel);
01757    }
01758    bc->in_use=0;
01759 }
01760 
01761 
01762 
01763 
01764 int misdn_lib_get_port_up (int port) 
01765 { /* Pull Up L1 */ 
01766    struct misdn_stack *stack;
01767    
01768    for (stack=glob_mgr->stack_list;
01769         stack;
01770         stack=stack->next) {
01771       
01772       if (stack->port == port) {
01773 
01774          if (!stack->l1link)
01775             misdn_lib_get_l1_up(stack);
01776          if (!stack->l2link)
01777             misdn_lib_get_l2_up(stack);
01778          
01779          return 0;
01780       }
01781    }
01782    return 0;
01783 }
01784 
01785 
01786 int misdn_lib_get_port_down (int port) 
01787 { /* Pull Down L1 */ 
01788    struct misdn_stack *stack;
01789    for (stack=glob_mgr->stack_list;
01790         stack;
01791         stack=stack->next) {
01792       if (stack->port == port) {
01793             if (stack->l2link)
01794                misdn_lib_get_l2_down(stack);
01795             misdn_lib_get_l1_down(stack);
01796          return 0;
01797       }
01798    }
01799    return 0;
01800 }
01801 
01802 int misdn_lib_port_up(int port, int check)
01803 {
01804    struct misdn_stack *stack;
01805 
01806 
01807    for (stack=glob_mgr->stack_list;
01808         stack;
01809         stack=stack->next) {
01810       
01811       if (stack->port == port) {
01812 
01813          if (stack->blocked) {
01814             cb_log(0,port, "Port Blocked:%d L2:%d L1:%d\n", stack->blocked, stack->l2link, stack->l1link);
01815             return -1;
01816          }
01817 
01818          if (stack->ptp ) {
01819 
01820             if (stack->l1link && stack->l2link) {
01821                return 1;
01822             } else {
01823                cb_log(1,port, "Port Down L2:%d L1:%d\n",
01824                   stack->l2link, stack->l1link);
01825                return 0;
01826             }
01827          } else {
01828             if ( !check || stack->l1link )
01829                return 1;
01830             else {
01831                cb_log(1,port, "Port down PMP\n");
01832                return 0;
01833             }
01834          }
01835       }
01836    }
01837   
01838    return -1;
01839 }
01840 
01841 
01842 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh)
01843 {
01844    struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01845    struct misdn_bchannel dummybc;
01846    iframe_t frm; /* fake te frm to remove callref from global callreflist */
01847    frm.dinfo = hh->dinfo;
01848 
01849    frm.addr=stack->upper_id | FLG_MSG_DOWN;
01850 
01851    frm.prim = CC_RELEASE_CR|INDICATION;
01852    cb_log(4, stack->port, " --> CC_RELEASE_CR: Faking Release_cr for %x l3id:%x\n",frm.addr, frm.dinfo);
01853    /** removing procid **/
01854    if (!bc) {
01855       cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", hh->dinfo);
01856       misdn_make_dummy(&dummybc, stack->port, hh->dinfo, stack->nt, 0);
01857       bc=&dummybc; 
01858    }
01859 
01860    if (bc) {
01861       if ( (bc->l3_id & 0xff00) == 0xff00) {
01862          cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", bc->l3_id&0xff);
01863          stack->procids[bc->l3_id&0xff] = 0 ;
01864       }
01865    }
01866    else cb_log(0, stack->port, "Couldn't find BC so I couldn't remove the Process!!!! this is a bad port.\n");
01867 
01868    if (handle_cr(stack, &frm)<0) {
01869    }
01870 
01871    return 0 ;
01872 }
01873 
01874 static int
01875 handle_event_nt(void *dat, void *arg)
01876 {
01877    manager_t *mgr = (manager_t *)dat;
01878    msg_t *msg = (msg_t *)arg;
01879    mISDNuser_head_t *hh;
01880    struct misdn_stack *stack;
01881    int reject=0;
01882 
01883    if (!msg || !mgr)
01884       return(-EINVAL);
01885 
01886    stack = find_stack_by_mgr(mgr);
01887    hh=(mISDNuser_head_t*)msg->data;
01888 
01889    /*
01890     * When we are called from the mISDNuser lib, the nstlock is held and it
01891     * must be held when we return.  We unlock here because the lib may be
01892     * entered again recursively.
01893     */
01894    pthread_mutex_unlock(&stack->nstlock);
01895 
01896    cb_log(5, stack->port, " --> lib: prim %x dinfo %x\n",hh->prim, hh->dinfo);
01897    {
01898       switch(hh->prim){
01899       case CC_RETRIEVE|INDICATION:
01900       {
01901          struct misdn_bchannel *bc;
01902          struct misdn_bchannel *hold_bc;
01903 
01904          iframe_t frm; /* fake te frm to add callref to global callreflist */
01905          frm.dinfo = hh->dinfo;
01906 
01907          frm.addr=stack->upper_id | FLG_MSG_DOWN;
01908 
01909          frm.prim = CC_NEW_CR|INDICATION;
01910          
01911          if (handle_cr( stack, &frm)< 0) {
01912             msg_t *dmsg;
01913             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01914             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01915             pthread_mutex_lock(&stack->nstlock);
01916             stack->nst.manager_l3(&stack->nst, dmsg);
01917             free_msg(msg);
01918             return 0;
01919          }
01920          
01921          bc = find_bc_by_l3id(stack, hh->dinfo);
01922          hold_bc = stack_holder_find(stack, bc->l3_id);
01923          cb_log(4, stack->port, "bc_l3id:%x holded_bc_l3id:%x\n",bc->l3_id, hold_bc->l3_id);
01924 
01925          if (hold_bc) {
01926             cb_log(4, stack->port, "REMOVING Holder\n");
01927 
01928             /*swap the backup to our new channel back*/
01929             stack_holder_remove(stack, hold_bc);
01930             memcpy(bc, hold_bc, sizeof(*bc));
01931             free(hold_bc);
01932 
01933             bc->holded=0;
01934             bc->b_stid=0;
01935          }
01936          
01937       }
01938          
01939          break;
01940          
01941       case CC_SETUP|CONFIRM:
01942       {
01943          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01944          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
01945          cb_log(4, stack->port, " --> lib: Event_ind:SETUP CONFIRM [NT] : new L3ID  is %x\n",l3id );
01946    
01947          if (bc) {
01948             cb_log (2, bc->port, "I IND :CC_SETUP|CONFIRM: old l3id:%x new l3id:%x\n", bc->l3_id, l3id);
01949             bc->l3_id = l3id;
01950             cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
01951          } else {
01952             cb_log(4, stack->port, "Bc Not found (after SETUP CONFIRM)\n");
01953          }
01954       }
01955       free_msg(msg);
01956       pthread_mutex_lock(&stack->nstlock);
01957       return 0;
01958       
01959       case CC_SETUP|INDICATION:
01960       {
01961          struct misdn_bchannel* bc=misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01962          if (!bc) {
01963             msg_t *dmsg;
01964             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01965             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01966             pthread_mutex_lock(&stack->nstlock);
01967             stack->nst.manager_l3(&stack->nst, dmsg);
01968             free_msg(msg);
01969             return 0;
01970          }
01971   
01972          cb_log(4, stack->port, " --> new_process: New L3Id: %x\n",hh->dinfo);
01973          bc->l3_id=hh->dinfo;
01974       }
01975       break;
01976 
01977       case CC_CONNECT_ACKNOWLEDGE|INDICATION:
01978       break;
01979       
01980       case CC_ALERTING|INDICATION:
01981       case CC_PROCEEDING|INDICATION:
01982       case CC_SETUP_ACKNOWLEDGE|INDICATION:
01983          if(!stack->ptp) break;  
01984       case CC_CONNECT|INDICATION:
01985       break;
01986       case CC_DISCONNECT|INDICATION:
01987       {
01988          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01989          if (!bc) {
01990             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
01991             if (bc) { 
01992                int myprocid=bc->l3_id&0x0000ffff;
01993                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
01994                cb_log(3,stack->port,"Reject dinfo: %x cause:%d\n",hh->dinfo,bc->cause);
01995                reject=1;      
01996             }
01997          }
01998       }
01999       break;
02000       
02001       case CC_FACILITY|INDICATION:
02002       {
02003          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
02004          if (!bc) {
02005             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
02006             if (bc) { 
02007                int myprocid=bc->l3_id&0x0000ffff;
02008                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
02009                cb_log(4,bc->port,"Repaired reject Bug, new dinfo: %x\n",hh->dinfo);
02010             }
02011          }
02012       }
02013       break;
02014       
02015       case CC_RELEASE_COMPLETE|INDICATION:
02016          break;
02017 
02018       case CC_SUSPEND|INDICATION:
02019       {
02020          msg_t *dmsg;
02021          cb_log(4, stack->port, " --> Got Suspend, sending Reject for now\n");
02022          dmsg = create_l3msg(CC_SUSPEND_REJECT | REQUEST,MT_SUSPEND_REJECT, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
02023          pthread_mutex_lock(&stack->nstlock);
02024          stack->nst.manager_l3(&stack->nst, dmsg);
02025          free_msg(msg);
02026          return 0;
02027       }
02028       break;
02029       case CC_RESUME|INDICATION:
02030          break;
02031 
02032       case CC_RELEASE|CONFIRM:
02033          {
02034             struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
02035 
02036             if (bc) { 
02037                cb_log(1, stack->port, "CC_RELEASE|CONFIRM (l3id:%x), sending RELEASE_COMPLETE\n", hh->dinfo);
02038                misdn_lib_send_event(bc, EVENT_RELEASE_COMPLETE);
02039             }
02040          }
02041          break;
02042          
02043       case CC_RELEASE|INDICATION:
02044          break;
02045 
02046       case CC_RELEASE_CR|INDICATION:
02047          release_cr(stack, hh);
02048          free_msg(msg);
02049          pthread_mutex_lock(&stack->nstlock);
02050          return 0 ;
02051       break;
02052       
02053       case CC_NEW_CR|INDICATION:
02054          /*  Got New CR for bchan, for now I handle this one in */
02055          /*  connect_ack, Need to be changed */
02056       {
02057          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
02058          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
02059          if (!bc) {
02060             cb_log(0, stack->port, " --> In NEW_CR: didn't found bc ??\n");
02061             pthread_mutex_lock(&stack->nstlock);
02062             return -1;
02063          }
02064          if (((l3id&0xff00)!=0xff00) && ((bc->l3_id&0xff00)==0xff00)) {
02065             cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", 0xff&bc->l3_id);
02066             stack->procids[bc->l3_id&0xff] = 0 ;
02067          }
02068          cb_log(4, stack->port, "lib: Event_ind:CC_NEW_CR : very new L3ID  is %x\n",l3id );
02069    
02070          bc->l3_id =l3id;
02071          cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
02072    
02073          free_msg(msg);
02074          pthread_mutex_lock(&stack->nstlock);
02075          return 0;
02076       }
02077       
02078       case DL_ESTABLISH | INDICATION:
02079       case DL_ESTABLISH | CONFIRM:
02080       {
02081          cb_log(3, stack->port, "%% GOT L2 Activate Info.\n");
02082          
02083          if (stack->ptp && stack->l2link) {
02084             cb_log(0, stack->port, "%% GOT L2 Activate Info. but we're activated already.. this l2 is faulty, blocking port\n");
02085             cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02086          }
02087 
02088          if (stack->ptp && !stack->restart_sent) {
02089             /* make sure we restart the interface of the 
02090              * other side */
02091             stack->restart_sent=1;
02092             misdn_lib_send_restart(stack->port, -1);
02093 
02094          }
02095       
02096          /* when we get the L2 UP, the L1 is UP definitely too*/
02097          stack->l2link = 1;
02098          stack->l2upcnt=0;
02099          
02100          free_msg(msg);
02101          pthread_mutex_lock(&stack->nstlock);
02102          return 0;
02103       }
02104       break;
02105 
02106 
02107       case DL_RELEASE | INDICATION:
02108       case DL_RELEASE | CONFIRM:
02109       {
02110          if (stack->ptp) {
02111             cb_log(3 , stack->port, "%% GOT L2 DeActivate Info.\n");
02112 
02113             if (stack->l2upcnt>3) {
02114                cb_log(0 , stack->port, "!!! Could not Get the L2 up after 3 Attempts!!!\n");
02115             }  else {
02116 #if 0
02117                if (stack->nt) misdn_lib_reinit_nt_stack(stack->port);
02118 #endif
02119                if (stack->l1link) {
02120                   misdn_lib_get_l2_up(stack);
02121                   stack->l2upcnt++;
02122                }
02123             }
02124             
02125          } else 
02126             cb_log(3, stack->port, "%% GOT L2 DeActivate Info.\n");
02127          
02128          stack->l2link = 0;
02129          free_msg(msg);
02130          pthread_mutex_lock(&stack->nstlock);
02131          return 0;
02132       }
02133       break;
02134       }
02135    }
02136    
02137    {
02138       /*  Parse Events and fire_up to App. */
02139       struct misdn_bchannel *bc;
02140       struct misdn_bchannel dummybc;
02141       
02142       enum event_e event = isdn_msg_get_event(msgs_g, msg, 1);
02143     
02144       bc=find_bc_by_l3id(stack, hh->dinfo);
02145     
02146       if (!bc) {
02147          cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x).\n", hh->dinfo);
02148          misdn_make_dummy(&dummybc, stack->port,  hh->dinfo, stack->nt, 0);
02149          bc=&dummybc; 
02150       }
02151       if (bc ) {
02152          isdn_msg_parse_event(msgs_g,msg,bc, 1);
02153 
02154          switch (event) {
02155             case EVENT_SETUP:
02156                if (bc->channel<=0 || bc->channel==0xff) 
02157                   bc->channel=0;
02158             
02159                if (find_free_chan_in_stack(stack,bc, bc->channel,0)<0) {
02160                   msg_t *dmsg;
02161                   cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
02162                   dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
02163                   pthread_mutex_lock(&stack->nstlock);
02164                   stack->nst.manager_l3(&stack->nst, dmsg);
02165                   free_msg(msg);
02166                   return 0;
02167                }
02168                break;
02169             case EVENT_RELEASE:
02170             case EVENT_RELEASE_COMPLETE:
02171                {
02172                int channel=bc->channel;
02173                int tmpcause=bc->cause; 
02174                          empty_bc(bc);
02175                bc->cause=tmpcause;
02176                clean_up_bc(bc);
02177 
02178                if (channel>0)
02179                                  empty_chan_in_stack(stack,channel);
02180                bc->in_use=0;
02181                }
02182                break;
02183 
02184             default:
02185             break;
02186          }
02187          
02188          if(!isdn_get_info(msgs_g,event,1)) {
02189             cb_log(4, stack->port, "Unknown Event Ind: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02190          } else {
02191             if (reject) {
02192                switch(bc->cause){
02193                   case AST_CAUSE_USER_BUSY:
02194                      cb_log(1, stack->port, "Siemens Busy reject..\n");
02195 
02196                      break;
02197                   default:
02198                      break;
02199                }
02200             }
02201             cb_event(event, bc, glob_mgr->user_data);
02202          }
02203       } else {
02204          cb_log(4, stack->port, "No BC found with l3id: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02205       }
02206 
02207       free_msg(msg);
02208    }
02209 
02210 
02211    pthread_mutex_lock(&stack->nstlock);
02212    return 0;
02213 }
02214 
02215 
02216 static int handle_timers(msg_t* msg)
02217 {
02218    iframe_t *frm= (iframe_t*)msg->data;
02219    struct misdn_stack *stack; 
02220   
02221    /* Timer Stuff */
02222    switch (frm->prim) {
02223    case MGR_INITTIMER | CONFIRM:
02224    case MGR_ADDTIMER | CONFIRM:
02225    case MGR_DELTIMER | CONFIRM:
02226    case MGR_REMOVETIMER | CONFIRM:
02227       free_msg(msg);
02228       return(1);
02229    }
02230   
02231   
02232   
02233    if (frm->prim==(MGR_TIMER | INDICATION) ) {
02234       for (stack = glob_mgr->stack_list;
02235            stack;
02236            stack = stack->next) {
02237          itimer_t *it;
02238       
02239          if (!stack->nt) continue;
02240       
02241          it = stack->nst.tlist;
02242          /* find timer */
02243          for(it=stack->nst.tlist;
02244              it;
02245              it=it->next) {
02246             if (it->id == (int)frm->addr)
02247                break;
02248          }
02249          if (it) {
02250             int ret;
02251             ret = mISDN_write_frame(stack->midev, msg->data, frm->addr,
02252                      MGR_TIMER | RESPONSE, 0, 0, NULL, TIMEOUT_1SEC);
02253             test_and_clear_bit(FLG_TIMER_RUNING, (long unsigned int *)&it->Flags);
02254             pthread_mutex_lock(&stack->nstlock);
02255             ret = it->function(it->data);
02256             pthread_mutex_unlock(&stack->nstlock);
02257             free_msg(msg);
02258             return 1;
02259          }
02260       }
02261     
02262       cb_log(0, 0, "Timer Msg without Timer ??\n");
02263       free_msg(msg);
02264       return 1;
02265    }
02266   
02267    return 0;
02268 }
02269 
02270 
02271 
02272 void misdn_lib_tone_generator_start(struct misdn_bchannel *bc)
02273 {
02274    bc->generate_tone=1;
02275 }
02276 
02277 void misdn_lib_tone_generator_stop(struct misdn_bchannel *bc)
02278 {
02279    bc->generate_tone=0;
02280 }
02281 
02282 
02283 static int do_tone(struct misdn_bchannel *bc, int len)
02284 {
02285    bc->tone_cnt=len;
02286    
02287    if (bc->generate_tone) {
02288       cb_event(EVENT_TONE_GENERATE, bc, glob_mgr->user_data);
02289       
02290       if ( !bc->nojitter ) {
02291          misdn_tx_jitter(bc,len);
02292       }
02293       
02294       return 1;
02295    }
02296    
02297    return 0;
02298 }
02299 
02300 
02301 #ifdef MISDN_SAVE_DATA
02302 static void misdn_save_data(int id, char *p1, int l1, char *p2, int l2) 
02303 {
02304    char n1[32],n2[32];
02305    FILE *rx, *tx;
02306 
02307    sprintf(n1,"/tmp/misdn-rx-%d.raw",id);
02308    sprintf(n2,"/tmp/misdn-tx-%d.raw",id);
02309 
02310    rx = fopen(n1,"a+"); 
02311    tx = fopen(n2,"a+");
02312 
02313    if (!rx || !tx) {
02314       cb_log(0,0,"Couldn't open files: %s\n",strerror(errno));
02315       if (rx)
02316          fclose(rx);
02317       if (tx)
02318          fclose(tx);
02319       return ;
02320    }
02321    
02322    fwrite(p1,1,l1,rx);
02323    fwrite(p2,1,l2,tx);
02324    
02325    fclose(rx);
02326    fclose(tx);
02327 
02328 }
02329 #endif
02330 
02331 void misdn_tx_jitter(struct misdn_bchannel *bc, int len)
02332 {
02333    char buf[4096 + mISDN_HEADER_LEN];
02334    char *data=&buf[mISDN_HEADER_LEN];
02335    iframe_t *txfrm= (iframe_t*)buf;
02336    int jlen, r;
02337    
02338    jlen=cb_jb_empty(bc,data,len);
02339    
02340    if (jlen) {
02341 #ifdef MISDN_SAVE_DATA
02342       misdn_save_data((bc->port*100+bc->channel), data, jlen, bc->bframe, bc->bframe_len);
02343 #endif
02344       flip_buf_bits( data, jlen);
02345       
02346       if (jlen < len) {
02347          cb_log(1, bc->port, "Jitterbuffer Underrun. Got %d of expected %d\n", jlen, len);
02348       }
02349       
02350       txfrm->prim = DL_DATA|REQUEST;
02351       
02352       txfrm->dinfo = 0;
02353       
02354       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02355       
02356       txfrm->len =jlen;
02357       cb_log(9, bc->port, "Transmitting %d samples 2 misdn\n", txfrm->len);
02358 
02359       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02360    } else {
02361 #define MISDN_GEN_SILENCE
02362 #ifdef MISDN_GEN_SILENCE
02363       int cnt=len/TONE_SILENCE_SIZE;
02364       int rest=len%TONE_SILENCE_SIZE;
02365       int i;
02366 
02367       for (i=0; i<cnt; i++) {
02368          memcpy(data, tone_silence_flip, TONE_SILENCE_SIZE );
02369          data +=TONE_SILENCE_SIZE;
02370       }
02371 
02372       if (rest) {
02373          memcpy(data, tone_silence_flip, rest);
02374       }
02375 
02376       txfrm->prim = DL_DATA|REQUEST;
02377 
02378       txfrm->dinfo = 0;
02379 
02380       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02381 
02382       txfrm->len =len;
02383       cb_log(5, bc->port, "Transmitting %d samples of silence to misdn\n", len);
02384 
02385       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02386 #else
02387       r = 0;
02388 #endif
02389    }
02390 
02391    if (r < 0) {
02392       cb_log(1, bc->port, "Error in mISDN_write (%s)\n", strerror(errno));
02393    }
02394 }
02395 
02396 static int handle_bchan(msg_t *msg)
02397 {
02398    iframe_t *frm= (iframe_t*)msg->data;
02399    struct misdn_bchannel *bc=find_bc_by_addr(frm->addr);
02400    struct misdn_stack *stack;
02401    
02402    if (!bc) {
02403       cb_log(1,0,"handle_bchan: BC not found for prim:%x with addr:%x dinfo:%x\n", frm->prim, frm->addr, frm->dinfo);
02404       return 0 ;
02405    }
02406    
02407    stack = get_stack_by_bc(bc);
02408    
02409    if (!stack) {
02410       cb_log(0, bc->port,"handle_bchan: STACK not found for prim:%x with addr:%x dinfo:%x\n", frm->prim, frm->addr, frm->dinfo);
02411       return 0;
02412    }
02413    
02414    switch (frm->prim) {
02415 
02416    case MGR_SETSTACK| CONFIRM:
02417       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|CONFIRM pid:%d\n",bc->pid);
02418       break;
02419       
02420    case MGR_SETSTACK| INDICATION:
02421       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|IND pid:%d\n",bc->pid);
02422    break;
02423 #if 0
02424    AGAIN:
02425       bc->addr = mISDN_get_layerid(stack->midev, bc->b_stid, bc->layer);
02426       if (!bc->addr) {
02427 
02428          if (errno == EAGAIN) {
02429             usleep(1000);
02430             goto AGAIN;
02431          }
02432          
02433          cb_log(0,stack->port,"$$$ Get Layer (%d) Id Error: %s\n",bc->layer,strerror(errno));
02434          
02435          /* we kill the channel later, when we received some
02436             data. */
02437          bc->addr= frm->addr;
02438       } else if ( bc->addr < 0) {
02439          cb_log(0, stack->port,"$$$ bc->addr <0 Error:%s\n",strerror(errno));
02440          bc->addr=0;
02441       }
02442       
02443       cb_log(4, stack->port," --> Got Adr %x\n", bc->addr);
02444 
02445       free_msg(msg);
02446    
02447       
02448       switch(bc->bc_state) {
02449       case BCHAN_SETUP:
02450          bc_state_change(bc,BCHAN_SETUPED);
02451       break;
02452 
02453       case BCHAN_CLEAN_REQUEST:
02454       default:
02455          cb_log(0, stack->port," --> STATE WASN'T SETUP (but %s) in SETSTACK|IND pid:%d\n",bc_state2str(bc->bc_state), bc->pid);
02456          clean_up_bc(bc);
02457       }
02458       return 1;
02459 #endif
02460 
02461    case MGR_DELLAYER| INDICATION:
02462       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|IND pid:%d\n",bc->pid);
02463       break;
02464       
02465    case MGR_DELLAYER| CONFIRM:
02466       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|CNF pid:%d\n",bc->pid);
02467       
02468       bc->pid=0;
02469       bc->addr=0;
02470       
02471       free_msg(msg);
02472       return 1;
02473       
02474    case PH_ACTIVATE | INDICATION:
02475    case DL_ESTABLISH | INDICATION:
02476       cb_log(3, stack->port, "BCHAN: ACT Ind pid:%d\n", bc->pid);
02477 
02478       free_msg(msg);
02479       return 1;    
02480 
02481    case PH_ACTIVATE | CONFIRM:
02482    case DL_ESTABLISH | CONFIRM:
02483       
02484       cb_log(3, stack->port, "BCHAN: bchan ACT Confirm pid:%d\n",bc->pid);
02485       free_msg(msg);
02486       
02487       return 1;    
02488 
02489    case DL_ESTABLISH | REQUEST:
02490       {
02491          char buf[128];
02492          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_ESTABLISH | CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02493       }
02494       free_msg(msg);
02495       return 1;
02496 
02497    case DL_RELEASE|REQUEST:
02498       {
02499          char buf[128];
02500          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_RELEASE| CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02501       }
02502       free_msg(msg);
02503       return 1;
02504       
02505    case PH_DEACTIVATE | INDICATION:
02506    case DL_RELEASE | INDICATION:
02507       cb_log (3, stack->port, "BCHAN: DeACT Ind pid:%d\n",bc->pid);
02508       
02509       free_msg(msg);
02510       return 1;
02511     
02512    case PH_DEACTIVATE | CONFIRM:
02513    case DL_RELEASE | CONFIRM:
02514       cb_log(3, stack->port, "BCHAN: DeACT Conf pid:%d\n",bc->pid);
02515       
02516       free_msg(msg);
02517       return 1;
02518     
02519    case PH_CONTROL|INDICATION:
02520    {
02521       unsigned int *cont = (unsigned int *) &frm->data.p;
02522       
02523       cb_log(4, stack->port, "PH_CONTROL: channel:%d oad%d:%s dad%d:%s \n", bc->channel, bc->onumplan,bc->oad, bc->dnumplan,bc->dad);
02524 
02525       if ((*cont & ~DTMF_TONE_MASK) == DTMF_TONE_VAL) {
02526          int dtmf = *cont & DTMF_TONE_MASK;
02527          cb_log(4, stack->port, " --> DTMF TONE: %c\n",dtmf);
02528          bc->dtmf=dtmf;
02529          cb_event(EVENT_DTMF_TONE, bc, glob_mgr->user_data);
02530    
02531          free_msg(msg);
02532          return 1;
02533       }
02534       if (*cont == BF_REJECT) {
02535          cb_log(4, stack->port, " --> BF REJECT\n");
02536          free_msg(msg);
02537          return 1;
02538       }
02539       if (*cont == BF_ACCEPT) {
02540          cb_log(4, stack->port, " --> BF ACCEPT\n");
02541          free_msg(msg);
02542          return 1;
02543       }
02544    }
02545    break;
02546 
02547    case PH_DATA|REQUEST:
02548    case DL_DATA|REQUEST:
02549       cb_log(0, stack->port, "DL_DATA REQUEST \n");
02550       do_tone(bc, 64);
02551       
02552       free_msg(msg);
02553       return 1;
02554    
02555    
02556    case PH_DATA|INDICATION:
02557    case DL_DATA|INDICATION:
02558    {
02559       bc->bframe = (void*)&frm->data.i;
02560       bc->bframe_len = frm->len;
02561 
02562       /** Anyway flip the bufbits **/
02563       if ( misdn_cap_is_speech(bc->capability) ) 
02564          flip_buf_bits(bc->bframe, bc->bframe_len);
02565    
02566 
02567       if (!bc->bframe_len) {
02568          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02569          free_msg(msg);
02570          return 1;
02571       }
02572 
02573       if ( (bc->addr&STACK_ID_MASK) != (frm->addr&STACK_ID_MASK) ) {
02574          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02575          free_msg(msg);
02576          return 1;
02577       }
02578       
02579 #if MISDN_DEBUG
02580       cb_log(0, stack->port, "DL_DATA INDICATION Len %d\n", frm->len);
02581 
02582 #endif
02583       
02584       if ( (bc->bc_state == BCHAN_ACTIVATED) && frm->len > 0) {
02585          int t;
02586 
02587 #ifdef MISDN_B_DEBUG
02588          cb_log(0,bc->port,"do_tone START\n");
02589 #endif
02590          t=do_tone(bc,frm->len);
02591 
02592 #ifdef MISDN_B_DEBUG
02593          cb_log(0,bc->port,"do_tone STOP (%d)\n",t);
02594 #endif
02595          if (  !t ) {
02596             int i;
02597             
02598             if ( misdn_cap_is_speech(bc->capability)) {
02599                if ( !bc->nojitter ) {
02600 #ifdef MISDN_B_DEBUG
02601                   cb_log(0,bc->port,"tx_jitter START\n");
02602 #endif
02603                   misdn_tx_jitter(bc,frm->len);
02604 #ifdef MISDN_B_DEBUG
02605                   cb_log(0,bc->port,"tx_jitter STOP\n");
02606 #endif
02607                }
02608             }
02609 
02610 #ifdef MISDN_B_DEBUG 
02611             cb_log(0,bc->port,"EVENT_B_DATA START\n");
02612 #endif
02613             
02614             i = cb_event(EVENT_BCHAN_DATA, bc, glob_mgr->user_data);
02615 #ifdef MISDN_B_DEBUG 
02616             cb_log(0,bc->port,"EVENT_B_DATA STOP\n");
02617 #endif
02618             
02619             if (i<0) {
02620                cb_log(10,stack->port,"cb_event returned <0\n");
02621                /*clean_up_bc(bc);*/
02622             }
02623          }
02624       }
02625       free_msg(msg);
02626       return 1;
02627    }
02628 
02629 
02630    case PH_CONTROL | CONFIRM:
02631       cb_log(4, stack->port, "PH_CONTROL|CNF bc->addr:%x\n", frm->addr);
02632       free_msg(msg);
02633       return 1;
02634 
02635    case PH_DATA | CONFIRM:
02636    case DL_DATA|CONFIRM:
02637 #if MISDN_DEBUG
02638 
02639       cb_log(0, stack->port, "Data confirmed\n");
02640 
02641 #endif
02642       free_msg(msg);
02643       return 1;
02644    case DL_DATA|RESPONSE:
02645 #if MISDN_DEBUG
02646       cb_log(0, stack->port, "Data response\n");
02647 
02648 #endif
02649       break;
02650    }
02651   
02652    return 0;
02653 }
02654 
02655 
02656 
02657 static int handle_frm_nt(msg_t *msg)
02658 {
02659    iframe_t *frm= (iframe_t*)msg->data;
02660    struct misdn_stack *stack;
02661    int err=0;
02662 
02663    stack=find_stack_by_addr( frm->addr );
02664 
02665    
02666   
02667    if (!stack || !stack->nt) {
02668       return 0;
02669    }
02670 
02671    
02672    pthread_mutex_lock(&stack->nstlock);
02673    if ((err=stack->nst.l1_l2(&stack->nst,msg))) {
02674       pthread_mutex_unlock(&stack->nstlock);
02675       if (nt_err_cnt > 0 ) {
02676          if (nt_err_cnt < 100) {
02677             nt_err_cnt++; 
02678             cb_log(0, stack->port, "NT Stack sends us error: %d \n", err);
02679          } else if (nt_err_cnt < 105){
02680             cb_log(0, stack->port, "NT Stack sends us error: %d over 100 times, so I'll stop this message\n", err);
02681             nt_err_cnt = - 1; 
02682          }
02683       }
02684       free_msg(msg);
02685       return 1;
02686    }
02687    pthread_mutex_unlock(&stack->nstlock);
02688    return 1;
02689 }
02690 
02691 
02692 static int handle_frm(msg_t *msg)
02693 {
02694    iframe_t *frm = (iframe_t*) msg->data;
02695    
02696    struct misdn_stack *stack=find_stack_by_addr(frm->addr);
02697 
02698    if (!stack || stack->nt) {
02699       return 0;
02700    }
02701    
02702    cb_log(4,stack?stack->port:0,"handle_frm: frm->addr:%x frm->prim:%x\n",frm->addr,frm->prim);
02703 
02704    {
02705       struct misdn_bchannel dummybc;
02706       struct misdn_bchannel *bc;
02707       int ret=handle_cr(stack, frm);
02708 
02709       if (ret<0) {
02710          cb_log(3,stack?stack->port:0,"handle_frm: handle_cr <0 prim:%x addr:%x\n", frm->prim, frm->addr);
02711 
02712 
02713       }
02714 
02715       if(ret) {
02716          free_msg(msg);
02717          return 1;
02718       }
02719     
02720       bc=find_bc_by_l3id(stack, frm->dinfo);
02721 
02722       if (!bc && (frm->prim==(CC_RESTART|CONFIRM)) ) {
02723          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02724          bc=&dummybc;
02725       }
02726 
02727       if (!bc && (frm->prim==(CC_SETUP|INDICATION)) ) {
02728          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02729          dummybc.port=stack->port;
02730          dummybc.l3_id=frm->dinfo;
02731          bc=&dummybc;
02732 
02733          misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02734 
02735          free_msg(msg);
02736          return 1;
02737       }
02738 
02739     
02740 handle_frm_bc:
02741       if (bc ) {
02742          enum event_e event = isdn_msg_get_event(msgs_g, msg, 0);
02743          enum event_response_e response=RESPONSE_OK;
02744          int ret;
02745       
02746          isdn_msg_parse_event(msgs_g,msg,bc, 0);
02747          
02748          /** Preprocess some Events **/
02749          ret = handle_event(bc, event, frm);
02750          if (ret<0) {
02751             cb_log(0,stack->port,"couldn't handle event\n");
02752             free_msg(msg);
02753             return 1;
02754          }
02755          /*  shoot up event to App: */
02756          cb_log(5, stack->port, "lib Got Prim: Addr %x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02757       
02758          if(!isdn_get_info(msgs_g,event,0)) 
02759             cb_log(0, stack->port, "Unknown Event Ind: Addr:%x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02760          else
02761             response=cb_event(event, bc, glob_mgr->user_data);
02762 #if 1
02763          if (event == EVENT_SETUP) {
02764             switch (response) {
02765             case RESPONSE_IGNORE_SETUP_WITHOUT_CLOSE:
02766 
02767                cb_log(0, stack->port, "TOTALLY IGNORING SETUP\n");               
02768                
02769                break;
02770             case RESPONSE_IGNORE_SETUP:
02771                /* I think we should send CC_RELEASE_CR, but am not sure*/
02772                bc->out_cause = AST_CAUSE_NORMAL_CLEARING;
02773             
02774             case RESPONSE_RELEASE_SETUP:
02775                misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02776                if (bc->channel>0)
02777                   empty_chan_in_stack(stack, bc->channel);
02778                empty_bc(bc);
02779                bc_state_change(bc,BCHAN_CLEANED);
02780                bc->in_use=0;
02781 
02782                cb_log(0, stack->port, "GOT IGNORE SETUP\n");
02783                break;
02784             case RESPONSE_OK:
02785                cb_log(4, stack->port, "GOT SETUP OK\n");
02786 
02787                
02788                break;
02789             default:
02790                break;
02791             }
02792          }
02793 
02794          if (event == EVENT_RELEASE_COMPLETE) {
02795             /* release bchannel only after we've announced the RELEASE_COMPLETE */
02796             int channel=bc->channel;
02797             int tmpcause=bc->cause; 
02798             int tmp_out_cause=bc->out_cause; 
02799             empty_bc(bc);
02800             bc->cause=tmpcause;
02801             bc->out_cause=tmp_out_cause;
02802             clean_up_bc(bc);
02803             bc->in_use = 0;
02804             
02805             if (tmpcause == AST_CAUSE_REQUESTED_CHAN_UNAVAIL) {
02806                cb_log(0, stack->port, "**** Received CAUSE:%d, restarting channel %d\n", AST_CAUSE_REQUESTED_CHAN_UNAVAIL, channel);
02807                misdn_lib_send_restart(stack->port, channel);
02808             }
02809             if (channel > 0) {
02810                empty_chan_in_stack(stack, channel);
02811             }
02812          }
02813 
02814          if (event == EVENT_RESTART) {
02815             cb_log(0, stack->port, "**** Received RESTART channel:%d\n", bc->restart_channel);
02816             empty_chan_in_stack(stack, bc->restart_channel);
02817          }
02818 
02819          cb_log(5, stack->port, "Freeing Msg on prim:%x \n",frm->prim);
02820 
02821          
02822          free_msg(msg);
02823          return 1;
02824 #endif
02825       
02826       } else {
02827          struct misdn_bchannel dummybc;
02828          if (frm->prim!=(CC_FACILITY|INDICATION))
02829             cb_log(0, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
02830          else
02831             cb_log(5, stack->port, " --> Using Dummy BC for FACILITY\n");
02832 
02833          memset (&dummybc,0,sizeof(dummybc));
02834          dummybc.port=stack->port;
02835          dummybc.l3_id=frm->dinfo;
02836          bc=&dummybc; 
02837          goto handle_frm_bc;
02838       }
02839    }
02840 
02841    cb_log(4, stack->port, "TE_FRM_HANDLER: Returning 0 on prim:%x \n",frm->prim);
02842    return 0;
02843 }
02844 
02845 
02846 static int handle_l1(msg_t *msg)
02847 {
02848    iframe_t *frm = (iframe_t*) msg->data;
02849    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02850    int i ;
02851    
02852    if (!stack) return 0 ;
02853 
02854    switch (frm->prim) {
02855    case PH_ACTIVATE | CONFIRM:
02856    case PH_ACTIVATE | INDICATION:
02857       cb_log (3, stack->port, "L1: PH L1Link Up!\n");
02858       stack->l1link=1;
02859       
02860       if (stack->nt) {
02861          
02862          pthread_mutex_lock(&stack->nstlock);
02863          if (stack->nst.l1_l2(&stack->nst, msg))
02864             free_msg(msg);
02865          pthread_mutex_unlock(&stack->nstlock);
02866 
02867          if (stack->ptp)
02868             misdn_lib_get_l2_up(stack);
02869       } else {
02870          free_msg(msg);
02871       }
02872       
02873       for (i=0;i<=stack->b_num; i++) {
02874          if (stack->bc[i].evq != EVENT_NOTHING) {
02875             cb_log(4, stack->port, "Firing Queued Event %s because L1 got up\n", isdn_get_info(msgs_g, stack->bc[i].evq, 0));
02876             misdn_lib_send_event(&stack->bc[i],stack->bc[i].evq);
02877             stack->bc[i].evq=EVENT_NOTHING;
02878          }
02879          
02880       }
02881       return 1;
02882 
02883    case PH_ACTIVATE | REQUEST:
02884       free_msg(msg);
02885       cb_log(3,stack->port,"L1: PH_ACTIVATE|REQUEST \n");
02886       return 1;
02887       
02888    case PH_DEACTIVATE | REQUEST:
02889       free_msg(msg);
02890       cb_log(3,stack->port,"L1: PH_DEACTIVATE|REQUEST \n");
02891       return 1;
02892       
02893    case PH_DEACTIVATE | CONFIRM:
02894    case PH_DEACTIVATE | INDICATION:
02895       cb_log (3, stack->port, "L1: PH L1Link Down! \n");
02896    
02897 #if 0
02898       for (i=0; i<=stack->b_num; i++) {
02899          if (global_state == MISDN_INITIALIZED)  {
02900             cb_event(EVENT_CLEANUP, &stack->bc[i], glob_mgr->user_data);
02901          }
02902       }
02903 #endif
02904       
02905       if (stack->nt) {
02906          pthread_mutex_lock(&stack->nstlock);
02907          if (stack->nst.l1_l2(&stack->nst, msg))
02908             free_msg(msg);
02909          pthread_mutex_unlock(&stack->nstlock);
02910       } else {
02911          free_msg(msg);
02912       }
02913       
02914       stack->l1link=0;
02915       stack->l2link=0;
02916       return 1;
02917    }
02918   
02919    return 0;
02920 }
02921 
02922 static int handle_l2(msg_t *msg)
02923 {
02924    iframe_t *frm = (iframe_t*) msg->data;
02925 
02926    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02927    
02928    if (!stack) {
02929       return 0 ;
02930    }
02931    
02932    switch(frm->prim) {
02933 
02934    case DL_ESTABLISH | REQUEST:
02935       cb_log(1,stack->port,"DL_ESTABLISH|REQUEST \n");
02936       free_msg(msg);
02937       return 1;
02938    case DL_RELEASE | REQUEST:
02939       cb_log(1,stack->port,"DL_RELEASE|REQUEST \n");
02940       free_msg(msg);
02941       return 1;
02942       
02943    case DL_ESTABLISH | INDICATION:
02944    case DL_ESTABLISH | CONFIRM:
02945    {
02946       cb_log (3, stack->port, "L2: L2Link Up! \n");
02947       if (stack->ptp && stack->l2link) {
02948          cb_log (-1, stack->port, "L2: L2Link Up! but it's already UP.. must be faulty, blocking port\n"); 
02949          cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02950       }
02951       stack->l2link=1;
02952       free_msg(msg);
02953       return 1;
02954    }
02955    break;
02956     
02957    case DL_RELEASE | INDICATION:
02958    case DL_RELEASE | CONFIRM:
02959    {
02960       cb_log (3, stack->port, "L2: L2Link Down! \n");
02961       stack->l2link=0;
02962       
02963       free_msg(msg);
02964       return 1;
02965    }
02966    break;
02967    }
02968    return 0;
02969 }
02970 
02971 static int handle_mgmt(msg_t *msg)
02972 {
02973    iframe_t *frm = (iframe_t*) msg->data;
02974    struct misdn_stack *stack;
02975 
02976    if ( (frm->addr == 0) && (frm->prim == (MGR_DELLAYER|CONFIRM)) ) {
02977       cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: 0 !\n") ;
02978       free_msg(msg);
02979       return 1;
02980    }
02981    
02982    stack = find_stack_by_addr(frm->addr);
02983    
02984    if (!stack) {
02985       if (frm->prim == (MGR_DELLAYER|CONFIRM)) {
02986          cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: %x !\n",
02987                frm->addr) ;
02988          free_msg(msg);
02989          return 1;
02990       }
02991       
02992       return 0;
02993    }
02994    
02995    switch(frm->prim) {
02996    case MGR_SHORTSTATUS | INDICATION:
02997    case MGR_SHORTSTATUS | CONFIRM:
02998       cb_log(5, stack->port, "MGMT: Short status dinfo %x\n",frm->dinfo);
02999       
03000       switch (frm->dinfo) {
03001       case SSTATUS_L1_ACTIVATED:
03002          cb_log(3, stack->port, "MGMT: SSTATUS: L1_ACTIVATED \n");
03003          stack->l1link=1;
03004       
03005          break;
03006       case SSTATUS_L1_DEACTIVATED:
03007          cb_log(3, stack->port, "MGMT: SSTATUS: L1_DEACTIVATED \n");
03008          stack->l1link=0;
03009 #if 0
03010          clear_l3(stack);
03011 #endif
03012          break;
03013 
03014       case SSTATUS_L2_ESTABLISHED:
03015          cb_log(3, stack->port, "MGMT: SSTATUS: L2_ESTABLISH \n");
03016          stack->l2link=1;
03017          break;
03018          
03019       case SSTATUS_L2_RELEASED:
03020          cb_log(3, stack->port, "MGMT: SSTATUS: L2_RELEASED \n");
03021          stack->l2link=0;
03022          break;
03023       }
03024       
03025       free_msg(msg);
03026       return 1;
03027       
03028    case MGR_SETSTACK | INDICATION:
03029       cb_log(4, stack->port, "MGMT: SETSTACK|IND dinfo %x\n",frm->dinfo);
03030       free_msg(msg);
03031       return 1;
03032    case MGR_DELLAYER | CONFIRM:
03033       cb_log(4, stack->port, "MGMT: DELLAYER|CNF dinfo %x\n",frm->dinfo) ;
03034       free_msg(msg);
03035       return 1;
03036       
03037    }
03038    
03039    /*
03040    if ( (frm->prim & 0x0f0000) ==  0x0f0000) {
03041    cb_log(5, 0, "$$$ MGMT FRAME: prim %x addr %x dinfo %x\n",frm->prim, frm->addr, frm->dinfo) ;
03042    free_msg(msg);
03043    return 1;
03044    } */
03045     
03046    return 0;
03047 }
03048 
03049 
03050 static msg_t *fetch_msg(int midev) 
03051 {
03052    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03053    int r;
03054 
03055    if (!msg) {
03056       cb_log(0, 0, "fetch_msg: alloc msg failed !!");
03057       return NULL;
03058    }
03059 
03060    AGAIN:
03061       r=mISDN_read(midev,msg->data,MAX_MSG_SIZE, TIMEOUT_10SEC);
03062       msg->len=r;
03063     
03064       if (r==0) {
03065          free_msg(msg); /* danger, cause usually freeing in main_loop */
03066          cb_log(6,0,"Got empty Msg..\n");
03067          return NULL;
03068       }
03069 
03070       if (r<0) {
03071          if (errno == EAGAIN) {
03072             /*we wait for mISDN here*/
03073             cb_log(4,0,"mISDN_read wants us to wait\n");
03074             usleep(5000);
03075             goto AGAIN;
03076          }
03077          
03078          cb_log(0,0,"mISDN_read returned :%d error:%s (%d)\n",r,strerror(errno),errno); 
03079       }
03080 
03081 #if 0
03082                if  (!(frm->prim == (DL_DATA|INDICATION) )|| (frm->prim == (PH_DATA|INDICATION)))
03083                        cb_log(0,0,"prim: %x dinfo:%x addr:%x msglen:%d frm->len:%d\n",frm->prim, frm->dinfo, frm->addr, msg->len,frm->len );
03084 #endif
03085       return msg;
03086 }
03087 
03088 void misdn_lib_isdn_l1watcher(int port)
03089 {
03090    struct misdn_stack *stack;
03091 
03092    for (stack = glob_mgr->stack_list; stack && (stack->port != port); stack = stack->next)
03093       ;
03094 
03095    if (stack) {
03096       cb_log(4, port, "Checking L1 State\n");   
03097       if (!stack->l1link) {
03098          cb_log(4, port, "L1 State Down, trying to get it up again\n"); 
03099          misdn_lib_get_short_status(stack);
03100          misdn_lib_get_l1_up(stack); 
03101          misdn_lib_get_l2_up(stack); 
03102       }
03103    }
03104 }
03105 
03106 /* This is a thread */
03107 static void misdn_lib_isdn_event_catcher(void *arg)
03108 {
03109    struct misdn_lib *mgr = arg;
03110    int zero_frm=0 , fff_frm=0 ;
03111    int midev= mgr->midev;
03112    int port=0;
03113    
03114    while (1) {
03115       msg_t *msg = fetch_msg(midev); 
03116       iframe_t *frm;
03117       
03118       
03119       if (!msg) continue;
03120       
03121       frm = (iframe_t*) msg->data;
03122       
03123       /** When we make a call from NT2Ast we get these frames **/
03124       if (frm->len == 0 && frm->addr == 0 && frm->dinfo == 0 && frm->prim == 0 ) {
03125          zero_frm++; 
03126          free_msg(msg);
03127          continue;
03128       } else {
03129          if (zero_frm) {
03130             cb_log(0, port, "*** Alert: %d zero_frms caught\n", zero_frm);
03131             zero_frm = 0 ;
03132          }
03133       }
03134       
03135       /** I get this sometimes after setup_bc **/
03136       if (frm->len == 0 &&  frm->dinfo == 0 && frm->prim == 0xffffffff ) {
03137          fff_frm++; 
03138          free_msg(msg);
03139          continue;
03140       } else {
03141          if (fff_frm) {
03142             cb_log(0, port, "*** Alert: %d fff_frms caught\n", fff_frm);
03143             fff_frm = 0 ;
03144          }
03145       }
03146       
03147       manager_isdn_handler(frm, msg);
03148    }
03149 
03150 }
03151 
03152 
03153 /** App Interface **/
03154 
03155 int te_lib_init(void) {
03156    char buff[1025] = "";
03157    iframe_t *frm=(iframe_t*)buff;
03158    int midev=mISDN_open();
03159    int ret;
03160 
03161    if  (midev<=0) return midev;
03162   
03163 /* create entity for layer 3 TE-mode */
03164    mISDN_write_frame(midev, buff, 0, MGR_NEWENTITY | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
03165    ret = mISDN_read_frame(midev, frm, sizeof(iframe_t), 0, MGR_NEWENTITY | CONFIRM, TIMEOUT_1SEC);
03166   
03167    if (ret < mISDN_HEADER_LEN) {
03168    noentity:
03169       fprintf(stderr, "cannot request MGR_NEWENTITY from mISDN: %s\n",strerror(errno));
03170       exit(-1);
03171    }
03172   
03173    entity = frm->dinfo & 0xffff ;
03174   
03175    if (!entity)
03176       goto noentity;
03177 
03178    return midev;
03179   
03180 }
03181 
03182 void te_lib_destroy(int midev)
03183 {
03184    char buf[1024];
03185    mISDN_write_frame(midev, buf, 0, MGR_DELENTITY | REQUEST, entity, 0, NULL, TIMEOUT_1SEC);
03186 
03187    cb_log(4, 0, "Entity deleted\n");
03188    mISDN_close(midev);
03189    cb_log(4, 0, "midev closed\n");
03190 }
03191 
03192 struct misdn_bchannel *manager_find_bc_by_pid(int pid)
03193 {
03194    struct misdn_stack *stack;
03195    int i;
03196   
03197    for (stack = glob_mgr->stack_list; stack; stack = stack->next) {
03198       for (i = 0; i <= stack->b_num; i++) {
03199          if (stack->bc[i].in_use && stack->bc[i].pid == pid) {
03200             return &stack->bc[i];
03201          }
03202       }
03203    }
03204   
03205    return NULL;
03206 }
03207 
03208 static int test_inuse(struct misdn_bchannel *bc)
03209 {
03210    struct timeval now;
03211    gettimeofday(&now, NULL);
03212    if (!bc->in_use) {
03213       if (misdn_lib_port_is_pri(bc->port) && bc->last_used.tv_sec == now.tv_sec ) {
03214          cb_log(2,bc->port, "channel with stid:%x for one second still in use! (n:%d lu:%d)\n", bc->b_stid, (int) now.tv_sec, (int) bc->last_used.tv_sec);
03215          return 1;
03216       }
03217       
03218 
03219       cb_log(3,bc->port, "channel with stid:%x not in use!\n", bc->b_stid);
03220       return 0;
03221    }
03222    
03223    cb_log(2,bc->port, "channel with stid:%x in use!\n", bc->b_stid);
03224    return 1;
03225 }
03226 
03227 
03228 static void prepare_bc(struct misdn_bchannel*bc, int channel)
03229 {
03230    bc->channel = channel;
03231    bc->channel_preselected = channel?1:0;
03232    bc->need_disconnect=1;
03233    bc->need_release=1;
03234    bc->need_release_complete=1;
03235    bc->cause = AST_CAUSE_NORMAL_CLEARING;
03236 
03237    if (++mypid>5000) mypid=1;
03238    bc->pid=mypid;
03239 
03240 #if 0
03241    bc->addr=0;
03242    bc->b_stid=0;
03243    bc->layer_id=0;
03244 #endif
03245 
03246    bc->in_use = 1;
03247 }
03248 
03249 struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel, int inout, int dec)
03250 {
03251    struct misdn_stack *stack;
03252    int i;
03253    
03254    if (channel < 0 || channel > MAX_BCHANS) {
03255       cb_log(0,port,"Requested channel out of bounds (%d)\n",channel);
03256       return NULL;
03257    }
03258 
03259    for (stack=glob_mgr->stack_list; stack; stack=stack->next) {
03260     
03261       if (stack->port == port) {
03262          int maxnum;
03263 
03264          if (stack->blocked) {
03265             cb_log(0,port,"Port is blocked\n");
03266             return NULL;
03267          }
03268       
03269          pthread_mutex_lock(&stack->st_lock);
03270          if (channel > 0) {
03271             if (channel <= stack->b_num) {
03272                for (i = 0; i < stack->b_num; i++) {
03273                   if ( stack->bc[i].channel == channel) {
03274                      if (test_inuse(&stack->bc[i])) { 
03275                         pthread_mutex_unlock(&stack->st_lock);
03276                         cb_log(0,port,"Requested channel:%d on port:%d is already in use\n",channel, port);
03277                         return NULL;
03278 
03279                      } else {
03280                         prepare_bc(&stack->bc[i], channel);
03281                         pthread_mutex_unlock(&stack->st_lock);
03282                         return &stack->bc[i];
03283                      }
03284                   }
03285                }
03286             } else {
03287                pthread_mutex_unlock(&stack->st_lock);
03288                cb_log(0,port,"Requested channel:%d is out of bounds on port:%d\n",channel, port);
03289                return NULL;
03290             }
03291          }
03292 
03293          maxnum = inout && !stack->pri && !stack->ptp ? stack->b_num + 1 : stack->b_num;
03294 
03295          if (dec) {
03296             for (i = maxnum-1; i>=0; i--) {
03297                if (!test_inuse(&stack->bc[i])) {
03298                   /* 3. channel on bri means CW*/
03299                   if (!stack->pri && i==stack->b_num)
03300                      stack->bc[i].cw=1;
03301                      
03302                   prepare_bc(&stack->bc[i], channel);
03303                   stack->bc[i].dec=1;
03304                   pthread_mutex_unlock(&stack->st_lock);
03305                   return &stack->bc[i];
03306                }
03307             }
03308          } else {
03309             for (i = 0; i <maxnum; i++) {
03310                if (!test_inuse(&stack->bc[i])) {
03311                   /* 3. channel on bri means CW*/
03312                   if (!stack->pri && i==stack->b_num)
03313                      stack->bc[i].cw=1;
03314 
03315                   prepare_bc(&stack->bc[i], channel);
03316                   pthread_mutex_unlock(&stack->st_lock);
03317                   return &stack->bc[i];
03318                }
03319             }
03320          }
03321          pthread_mutex_unlock(&stack->st_lock);
03322 
03323          cb_log(1,port,"There is no free channel on port (%d)\n",port);
03324          return NULL;
03325       }
03326    }
03327 
03328    cb_log(0,port,"Port is not configured (%d)\n",port);
03329    return NULL;
03330 }
03331 
03332 /*!
03333  * \internal
03334  * \brief Convert the facility function enum value into a string.
03335  *
03336  * \return String version of the enum value
03337  */
03338 static const char *fac2str(enum FacFunction facility)
03339 {
03340    static const struct { 
03341       enum FacFunction facility; 
03342       char *name;
03343    } arr[] = {
03344 /* *INDENT-OFF* */
03345       { Fac_None, "Fac_None" },
03346       { Fac_GetSupportedServices, "Fac_GetSupportedServices" },
03347       { Fac_Listen, "Fac_Listen" },
03348       { Fac_Suspend, "Fac_Suspend" },
03349       { Fac_Resume, "Fac_Resume" },
03350       { Fac_CFActivate, "Fac_CFActivate" },
03351       { Fac_CFDeactivate, "Fac_CFDeactivate" },
03352       { Fac_CFInterrogateParameters, "Fac_CFInterrogateParameters" },
03353       { Fac_CFInterrogateNumbers, "Fac_CFInterrogateNumbers" },
03354       { Fac_CD, "Fac_CD" },
03355       { Fac_AOCDCurrency, "Fac_AOCDCurrency" },
03356       { Fac_AOCDChargingUnit, "Fac_AOCDChargingUnit" },
03357 /* *INDENT-ON* */
03358    };
03359    
03360    unsigned index;
03361    
03362    for (index = 0; index < ARRAY_LEN(arr); ++index) {
03363       if (arr[index].facility == facility) {
03364          return arr[index].name;
03365       }
03366    }
03367 
03368    return "unknown";
03369 }
03370 
03371 void misdn_lib_log_ies(struct misdn_bchannel *bc)
03372 {
03373    struct misdn_stack *stack;
03374 
03375    if (!bc) return;
03376 
03377    stack = get_stack_by_bc(bc);
03378 
03379    if (!stack) return;
03380 
03381    cb_log(2, stack->port, " --> channel:%d mode:%s cause:%d ocause:%d rad:%s cad:%s\n", bc->channel, stack->nt?"NT":"TE", bc->cause, bc->out_cause, bc->rad, bc->cad);
03382    
03383    cb_log(2, stack->port,
03384           " --> info_dad:%s onumplan:%c dnumplan:%c rnumplan:%c cpnnumplan:%c\n",
03385           bc->info_dad,
03386           bc->onumplan>=0?'0'+bc->onumplan:' ',
03387           bc->dnumplan>=0?'0'+bc->dnumplan:' ',
03388           bc->rnumplan>=0?'0'+bc->rnumplan:' ',
03389           bc->cpnnumplan>=0?'0'+bc->cpnnumplan:' '
03390       );
03391    
03392    cb_log(3, stack->port, " --> caps:%s pi:%x keypad:%s sending_complete:%d\n", bearer2str(bc->capability),bc->progress_indicator, bc->keypad, bc->sending_complete);
03393    cb_log(4, stack->port, " --> screen:%d --> pres:%d\n",
03394          bc->screen, bc->pres);
03395    
03396    cb_log(4, stack->port, " --> addr:%x l3id:%x b_stid:%x layer_id:%x\n", bc->addr, bc->l3_id, bc->b_stid, bc->layer_id);
03397    
03398    cb_log(4, stack->port, " --> facility:%s out_facility:%s\n",fac2str(bc->fac_in.Function),fac2str(bc->fac_out.Function));
03399 
03400    cb_log(5, stack->port, " --> urate:%d rate:%d mode:%d user1:%d\n", bc->urate, bc->rate, bc->mode,bc->user1);
03401    
03402    cb_log(5, stack->port, " --> bc:%p h:%d sh:%d\n", bc, bc->holded, bc->stack_holder);
03403 }
03404 
03405 
03406 #define RETURN(a,b) {retval=a; goto b;}
03407 
03408 static void misdn_send_lock(struct misdn_bchannel *bc)
03409 {
03410    //cb_log(0,bc->port,"Locking bc->pid:%d\n", bc->pid);
03411    if (bc->send_lock)
03412       pthread_mutex_lock(&bc->send_lock->lock);
03413 }
03414 
03415 static void misdn_send_unlock(struct misdn_bchannel *bc)
03416 {
03417    //cb_log(0,bc->port,"UnLocking bc->pid:%d\n", bc->pid);
03418    if (bc->send_lock)
03419       pthread_mutex_unlock(&bc->send_lock->lock);
03420 }
03421 
03422 int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event )
03423 {
03424    msg_t *msg; 
03425    int retval=0;
03426    struct misdn_stack *stack;
03427    struct misdn_bchannel *held_bc;
03428   
03429    if (!bc) RETURN(-1,OUT_POST_UNLOCK);
03430    
03431    stack = get_stack_by_bc(bc);
03432    
03433    if (!stack) {
03434       cb_log(0,bc->port,"SENDEVENT: no Stack for event:%s oad:%s dad:%s \n", isdn_get_info(msgs_g, event, 0), bc->oad, bc->dad);
03435       RETURN(-1,OUT);
03436    }
03437    
03438    misdn_send_lock(bc);
03439 
03440 
03441    cb_log(6,stack->port,"SENDEVENT: stack->nt:%d stack->upperid:%x\n",stack->nt, stack->upper_id);
03442 
03443    if ( stack->nt && !stack->l1link) {
03444       /** Queue Event **/
03445       bc->evq=event;
03446       cb_log(1, stack->port, "Queueing Event %s because L1 is down (btw. Activating L1)\n", isdn_get_info(msgs_g, event, 0));
03447       misdn_lib_get_l1_up(stack);
03448       RETURN(0,OUT);
03449    }
03450    
03451    cb_log(1, stack->port, "I SEND:%s oad:%s dad:%s pid:%d\n", isdn_get_info(msgs_g, event, 0), bc->oad, bc->dad, bc->pid);
03452    cb_log(4, stack->port, " --> bc_state:%s\n",bc_state2str(bc->bc_state));
03453    misdn_lib_log_ies(bc);
03454    
03455    switch (event) {
03456    case EVENT_SETUP:
03457       if (create_process(glob_mgr->midev, bc)<0) {
03458          cb_log(0,  stack->port, " No free channel at the moment @ send_event\n");
03459 
03460          RETURN(-ENOCHAN,OUT);
03461       }
03462       break;
03463 
03464    case EVENT_PROGRESS:
03465    case EVENT_ALERTING:
03466    case EVENT_PROCEEDING:
03467    case EVENT_SETUP_ACKNOWLEDGE:
03468    case EVENT_CONNECT:
03469       if (!stack->nt) break;
03470 
03471    case EVENT_RETRIEVE_ACKNOWLEDGE:
03472 
03473       if (stack->nt) {
03474          if (bc->channel <=0 ) { /*  else we have the channel already */
03475             if (find_free_chan_in_stack(stack, bc, 0, 0)<0) {
03476                cb_log(0, stack->port, " No free channel at the moment\n");
03477                /*FIXME: add disconnect*/
03478                RETURN(-ENOCHAN,OUT);
03479             }
03480          }
03481          /* Its that i generate channels */
03482       }
03483 
03484       retval=setup_bc(bc);
03485       if (retval == -EINVAL) {
03486          cb_log(0,bc->port,"send_event: setup_bc failed\n");
03487       }
03488 
03489       if (misdn_cap_is_speech(bc->capability)) {
03490          if ((event==EVENT_CONNECT)||(event==EVENT_RETRIEVE_ACKNOWLEDGE)) {
03491             if ( *bc->crypt_key ) {
03492                cb_log(4, stack->port,  " --> ENABLING BLOWFISH channel:%d oad%d:%s dad%d:%s \n", bc->channel, bc->onumplan,bc->oad, bc->dnumplan,bc->dad);
03493                
03494                manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
03495             }
03496             
03497             if (!bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03498             manager_ec_enable(bc);
03499             
03500             if (bc->txgain != 0) {
03501                cb_log(4, stack->port,  "--> Changing txgain to %d\n", bc->txgain);
03502                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03503             }
03504             
03505             if ( bc->rxgain != 0 ) {
03506                cb_log(4, stack->port,  "--> Changing rxgain to %d\n", bc->rxgain);
03507                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03508             }
03509          }
03510       }
03511       break;
03512 
03513    case EVENT_HOLD_ACKNOWLEDGE:
03514       held_bc = malloc(sizeof(struct misdn_bchannel));
03515       if (!held_bc) {
03516          cb_log(0, bc->port, "Could not allocate held_bc!!!\n");
03517          RETURN(-1,OUT);
03518       }
03519 
03520       /* backup the bc and put it in storage */
03521       *held_bc = *bc;
03522       held_bc->holded = 1;
03523       held_bc->channel = 0;/* A held call does not have a channel anymore. */
03524       held_bc->channel_preselected = 0;
03525       held_bc->channel_found = 0;
03526       bc_state_change(held_bc, BCHAN_CLEANED);
03527       stack_holder_add(stack, held_bc);
03528    
03529       /* kill the bridge and clean the real b-channel record */
03530       if (stack->nt) {
03531          int channel;
03532          if (bc->bc_state == BCHAN_BRIDGED) {
03533             struct misdn_bchannel *bc2;
03534 
03535             misdn_split_conf(bc,bc->conf_id);
03536             bc2 = find_bc_by_confid(bc->conf_id);
03537             if (!bc2) {
03538                cb_log(0,bc->port,"We have no second bc in bridge???\n");
03539             } else {
03540                misdn_split_conf(bc2,bc->conf_id);
03541             }
03542          }
03543          
03544          channel = bc->channel;
03545 
03546          empty_bc(bc);
03547          clean_up_bc(bc);
03548 
03549          if (channel>0)
03550             empty_chan_in_stack(stack,channel);
03551 
03552          bc->in_use=0;  
03553       }
03554       break;
03555 
03556    /* finishing the channel eh ? */
03557    case EVENT_DISCONNECT:
03558       if (!bc->need_disconnect) {
03559          cb_log(0,bc->port," --> we have already send Disconnect\n");
03560          RETURN(-1,OUT);
03561       }
03562       
03563       bc->need_disconnect=0;
03564       break;
03565    case EVENT_RELEASE:
03566       if (!bc->need_release) {
03567          cb_log(0,bc->port," --> we have already send Release\n");
03568          RETURN(-1,OUT);
03569       }
03570       bc->need_disconnect=0;
03571       bc->need_release=0;
03572       break;
03573    case EVENT_RELEASE_COMPLETE:
03574       if (!bc->need_release_complete) {
03575          cb_log(0,bc->port," --> we have already send Release_complete\n");
03576          RETURN(-1,OUT);
03577       }
03578       bc->need_disconnect=0;
03579       bc->need_release=0;
03580       bc->need_release_complete=0;
03581 
03582       if (!stack->nt) {
03583          /*create cleanup in TE*/
03584          int channel=bc->channel;
03585 
03586          int tmpcause=bc->cause; 
03587          int tmp_out_cause=bc->out_cause; 
03588          empty_bc(bc);
03589          bc->cause=tmpcause;
03590          bc->out_cause=tmp_out_cause;
03591          clean_up_bc(bc);
03592          
03593          if (channel>0)
03594             empty_chan_in_stack(stack,channel);
03595          
03596          bc->in_use=0;
03597       }
03598       break;
03599     
03600    case EVENT_CONNECT_ACKNOWLEDGE:
03601 
03602       if ( bc->nt || misdn_cap_is_speech(bc->capability)) {
03603          int retval=setup_bc(bc);
03604          if (retval == -EINVAL){
03605             cb_log(0,bc->port,"send_event: setup_bc failed\n");
03606             
03607          }
03608       }
03609       
03610       if (misdn_cap_is_speech(bc->capability)) {
03611          if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03612          manager_ec_enable(bc);
03613 
03614          if ( bc->txgain != 0 ) {
03615             cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
03616             manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03617          }
03618          if ( bc->rxgain != 0 ) {
03619             cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
03620             manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03621          }
03622       }
03623       break;
03624     
03625    default:
03626       break;
03627    }
03628   
03629    /* Later we should think about sending bchannel data directly to misdn. */
03630    msg = isdn_msg_build_event(msgs_g, bc, event, stack->nt);
03631    msg_queue_tail(&stack->downqueue, msg);
03632    sem_post(&glob_mgr->new_msg);
03633   
03634 OUT:
03635    misdn_send_unlock(bc);
03636 
03637 OUT_POST_UNLOCK:
03638    return retval; 
03639 }
03640 
03641 
03642 static int handle_err(msg_t *msg)
03643 {
03644    iframe_t *frm = (iframe_t*) msg->data;
03645 
03646 
03647    if (!frm->addr) {
03648       static int cnt=0;
03649       if (!cnt)
03650          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x\n",frm->prim,frm->dinfo);
03651       cnt++;
03652       if (cnt>100) {
03653          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x (already more than 100 of them)\n",frm->prim,frm->dinfo);
03654          cnt=0;
03655       }
03656       
03657       free_msg(msg);
03658       return 1;
03659       
03660    }
03661    
03662    switch (frm->prim) {
03663       case MGR_SETSTACK|INDICATION:
03664          return handle_bchan(msg);
03665       break;
03666 
03667       case MGR_SETSTACK|CONFIRM:
03668       case MGR_CLEARSTACK|CONFIRM:
03669          free_msg(msg) ; 
03670          return 1;
03671       break;
03672 
03673       case DL_DATA|CONFIRM:
03674          cb_log(4,0,"DL_DATA|CONFIRM\n");
03675          free_msg(msg);
03676          return 1;
03677 
03678       case PH_CONTROL|CONFIRM:
03679          cb_log(4,0,"PH_CONTROL|CONFIRM\n");
03680          free_msg(msg);
03681          return 1;
03682 
03683       case DL_DATA|INDICATION:
03684       {
03685          int port=(frm->addr&MASTER_ID_MASK) >> 8;
03686          int channel=(frm->addr&CHILD_ID_MASK) >> 16;
03687          struct misdn_bchannel *bc;
03688 
03689          /*we flush the read buffer here*/
03690          
03691          cb_log(9,0,"BCHAN DATA without BC: addr:%x port:%d channel:%d\n",frm->addr, port,channel);
03692          
03693          free_msg(msg); 
03694          return 1;
03695          
03696          
03697          bc = find_bc_by_channel(port, channel);
03698 
03699          if (!bc) {
03700             struct misdn_stack *stack = find_stack_by_port(port);
03701 
03702             if (!stack) {
03703                cb_log(0,0," --> stack not found\n");
03704                free_msg(msg);
03705                return 1;
03706             }
03707             
03708             cb_log(0,0," --> bc not found by channel\n");
03709             if (stack->l2link)
03710                misdn_lib_get_l2_down(stack);
03711 
03712             if (stack->l1link)
03713                misdn_lib_get_l1_down(stack);
03714 
03715             free_msg(msg);
03716             return 1;
03717          }
03718          
03719          cb_log(3,port," --> BC in state:%s\n", bc_state2str(bc->bc_state));
03720       }
03721    }
03722 
03723    return 0;
03724 }
03725 
03726 #if 0
03727 static int queue_l2l3(msg_t *msg)
03728 {
03729    iframe_t *frm= (iframe_t*)msg->data;
03730    struct misdn_stack *stack;
03731    stack=find_stack_by_addr( frm->addr );
03732 
03733    
03734    if (!stack) {
03735       return 0;
03736    }
03737 
03738    msg_queue_tail(&stack->upqueue, msg);
03739    sem_post(&glob_mgr->new_msg);
03740    return 1;
03741 }
03742 #endif
03743 
03744 int manager_isdn_handler(iframe_t *frm ,msg_t *msg)
03745 {  
03746 
03747    if (frm->dinfo==0xffffffff && frm->prim==(PH_DATA|CONFIRM)) {
03748       cb_log(0,0,"SERIOUS BUG, dinfo == 0xffffffff, prim == PH_DATA | CONFIRM !!!!\n");
03749    }
03750 
03751    if ( ((frm->addr | ISDN_PID_BCHANNEL_BIT )>> 28 ) == 0x5) {
03752       static int unhandled_bmsg_count=1000;
03753       if (handle_bchan(msg)) {
03754          return 0 ;
03755       }
03756          
03757       if (unhandled_bmsg_count==1000) {
03758          cb_log(0, 0, "received 1k Unhandled Bchannel Messages: prim %x len %d from addr %x, dinfo %x on this port.\n",frm->prim, frm->len, frm->addr, frm->dinfo);     
03759          unhandled_bmsg_count=0;
03760       }
03761 
03762       unhandled_bmsg_count++;
03763       free_msg(msg);
03764       return 0;
03765    }  
03766 
03767 #ifdef RECV_FRM_SYSLOG_DEBUG
03768    syslog(LOG_NOTICE,"mISDN recv: P(%02d): ADDR:%x PRIM:%x DINFO:%x\n",stack->port, frm->addr, frm->prim, frm->dinfo);
03769 #endif
03770 
03771    if (handle_timers(msg)) 
03772       return 0 ;
03773 
03774    
03775    if (handle_mgmt(msg)) 
03776       return 0 ; 
03777    
03778    if (handle_l2(msg)) 
03779       return 0 ;
03780 
03781    /* Its important to handle l1 AFTER l2  */
03782    if (handle_l1(msg)) 
03783       return 0 ;
03784    
03785    if (handle_frm_nt(msg)) {
03786       return 0;
03787    }
03788 
03789    if (handle_frm(msg)) {
03790       return 0;
03791    }
03792 
03793    if (handle_err(msg)) {
03794       return 0 ;
03795    }
03796 
03797    cb_log(0, 0, "Unhandled Message: prim %x len %d from addr %x, dinfo %x on this port.\n",frm->prim, frm->len, frm->addr, frm->dinfo);      
03798    free_msg(msg);
03799    
03800 
03801    return 0;
03802 }
03803 
03804 
03805 
03806 
03807 int misdn_lib_get_port_info(int port)
03808 {
03809    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03810    iframe_t *frm;
03811    struct misdn_stack *stack=find_stack_by_port(port);
03812    if (!msg) {
03813       cb_log(0, port, "misdn_lib_get_port_info: alloc_msg failed!\n");
03814       return -1;
03815    }
03816    frm=(iframe_t*)msg->data;
03817    if (!stack ) {
03818       cb_log(0, port, "There is no Stack for this port.\n");
03819       return -1;
03820    }
03821    /* activate bchannel */
03822    frm->prim = CC_STATUS_ENQUIRY | REQUEST;
03823 
03824    frm->addr = stack->upper_id| FLG_MSG_DOWN;
03825 
03826    frm->dinfo = 0;
03827    frm->len = 0;
03828   
03829    msg_queue_tail(&glob_mgr->activatequeue, msg);
03830    sem_post(&glob_mgr->new_msg);
03831 
03832   
03833    return 0; 
03834 }
03835 
03836 
03837 int queue_cleanup_bc(struct misdn_bchannel *bc) 
03838 {
03839    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03840    iframe_t *frm;
03841    if (!msg) {
03842       cb_log(0, bc->port, "queue_cleanup_bc: alloc_msg failed!\n");
03843       return -1;
03844    }
03845    frm=(iframe_t*)msg->data;
03846 
03847    /* activate bchannel */
03848    frm->prim = MGR_CLEARSTACK| REQUEST;
03849 
03850    frm->addr = bc->l3_id;
03851 
03852    frm->dinfo = bc->port;
03853    frm->len = 0;
03854   
03855    msg_queue_tail(&glob_mgr->activatequeue, msg);
03856    sem_post(&glob_mgr->new_msg);
03857 
03858    return 0; 
03859 
03860 }
03861 
03862 int misdn_lib_pid_restart(int pid) 
03863 {
03864    struct misdn_bchannel *bc=manager_find_bc_by_pid(pid);
03865 
03866    if (bc) {
03867       manager_clean_bc(bc);
03868    }
03869    return 0;
03870 }
03871 
03872 /*Sends Restart message for every bchannel*/
03873 int misdn_lib_send_restart(int port, int channel)
03874 {
03875    struct misdn_stack *stack=find_stack_by_port(port);
03876    struct misdn_bchannel dummybc;
03877    /*default is all channels*/
03878    cb_log(0, port, "Sending Restarts on this port.\n");
03879    
03880    misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
03881 
03882    /*default is all channels*/
03883    if (channel <0) {
03884       dummybc.channel=-1;
03885       cb_log(0, port, "Restarting and all Interfaces\n");
03886       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03887 
03888       return 0;
03889    }
03890 
03891    /*if a channel is specified we restart only this one*/
03892    if (channel >0) {
03893       int cnt;
03894       dummybc.channel=channel;
03895       cb_log(0, port, "Restarting and cleaning channel %d\n",channel);
03896       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03897       /* clean up chan in stack, to be sure we don't think it's
03898        * in use anymore */
03899       for (cnt=0; cnt<=stack->b_num; cnt++) {
03900          if (stack->bc[cnt].in_use && stack->bc[cnt].channel == channel) {
03901             empty_bc(&stack->bc[cnt]);
03902             clean_up_bc(&stack->bc[cnt]);
03903             stack->bc[cnt].in_use=0;
03904          }
03905       }
03906    }
03907 
03908    return 0;
03909 }
03910 
03911 /*reinitializes the L2/L3*/
03912 int misdn_lib_port_restart(int port)
03913 {
03914    struct misdn_stack *stack=find_stack_by_port(port);
03915  
03916    cb_log(0, port, "Restarting this port.\n");
03917    if (stack) {
03918       cb_log(0, port, "Stack:%p\n",stack);
03919          
03920       clear_l3(stack);
03921       {
03922          msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03923          iframe_t *frm;
03924 
03925          if (!msg) {
03926             cb_log(0, port, "port_restart: alloc_msg failed\n");
03927             return -1;
03928          }
03929          
03930          frm=(iframe_t*)msg->data;
03931          /* we must activate if we are deactivated */
03932          /* activate bchannel */
03933          frm->prim = DL_RELEASE | REQUEST;
03934          frm->addr = stack->upper_id | FLG_MSG_DOWN;
03935 
03936          frm->dinfo = 0;
03937          frm->len = 0;
03938          msg_queue_tail(&glob_mgr->activatequeue, msg);
03939          sem_post(&glob_mgr->new_msg);
03940       }
03941 
03942       if (stack->nt)
03943          misdn_lib_reinit_nt_stack(stack->port);
03944     
03945    }
03946 
03947    return 0;
03948 }
03949 
03950 
03951 
03952 static sem_t handler_started; 
03953 
03954 /* This is a thread */
03955 static void manager_event_handler(void *arg)
03956 {
03957    sem_post(&handler_started); 
03958    while (1) {
03959       struct misdn_stack *stack;
03960       msg_t *msg;
03961     
03962       /** wait for events **/
03963       sem_wait(&glob_mgr->new_msg);
03964     
03965       for (msg=msg_dequeue(&glob_mgr->activatequeue);
03966            msg;
03967            msg=msg_dequeue(&glob_mgr->activatequeue)
03968          )
03969       {
03970    
03971          iframe_t *frm =  (iframe_t*) msg->data ;
03972 
03973          switch ( frm->prim) {
03974 
03975          case MGR_CLEARSTACK | REQUEST:
03976             /*a queued bchannel cleanup*/
03977             {
03978                struct misdn_stack *stack=find_stack_by_port(frm->dinfo);
03979                struct misdn_bchannel *bc;
03980                if (!stack) {
03981                   cb_log(0,0,"no stack found with port [%d]!! so we cannot cleanup the bc\n",frm->dinfo);
03982                   free_msg(msg);
03983                   break;
03984                }
03985                
03986                bc = find_bc_by_l3id(stack, frm->addr);
03987                if (bc) {
03988                   cb_log(1,bc->port,"CLEARSTACK queued, cleaning up\n");
03989                   clean_up_bc(bc);
03990                } else {
03991                   cb_log(0,stack->port,"bc could not be cleaned correctly !! addr [%x]\n",frm->addr);
03992                }
03993             }
03994             free_msg(msg); 
03995             break;
03996          case MGR_SETSTACK | REQUEST :
03997             free_msg(msg);
03998             break;
03999          default:
04000             mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
04001             free_msg(msg);
04002          }
04003       }
04004 
04005       for (stack=glob_mgr->stack_list;
04006            stack;
04007            stack=stack->next ) { 
04008 
04009          while ( (msg=msg_dequeue(&stack->upqueue)) ) {
04010             /** Handle L2/3 Signalling after bchans **/ 
04011             if (!handle_frm_nt(msg)) {
04012                /* Maybe it's TE */
04013                if (!handle_frm(msg)) {
04014                   /* wow none! */
04015                   cb_log(0,stack->port,"Wow we've got a strange issue while dequeueing a Frame\n");
04016                }
04017             }
04018          }
04019 
04020          /* Here we should check if we really want to 
04021             send all the messages we've queued, lets 
04022             assume we've queued a Disconnect, but 
04023             received it already from the other side!*/
04024            
04025          while ( (msg=msg_dequeue(&stack->downqueue)) ) {
04026             if (stack->nt ) {
04027                pthread_mutex_lock(&stack->nstlock);
04028                if (stack->nst.manager_l3(&stack->nst, msg))
04029                   cb_log(0, stack->port, "Error@ Sending Message in NT-Stack.\n");
04030                pthread_mutex_unlock(&stack->nstlock);
04031             } else {
04032                iframe_t *frm = (iframe_t *)msg->data;
04033                struct misdn_bchannel *bc = find_bc_by_l3id(stack, frm->dinfo);
04034                if (bc)
04035                   send_msg(glob_mgr->midev, bc, msg);
04036                else  {
04037                   if (frm->dinfo == MISDN_ID_GLOBAL || frm->dinfo == MISDN_ID_DUMMY ) {
04038                      struct misdn_bchannel dummybc;
04039                      cb_log(5,0," --> GLOBAL/DUMMY\n");
04040                      misdn_make_dummy(&dummybc, stack->port, frm->dinfo, stack->nt, 0);
04041                      send_msg(glob_mgr->midev, &dummybc, msg);
04042                   } else {
04043                      cb_log(0,0,"No bc for Message\n");
04044                   }
04045                }
04046             }
04047          }
04048       }
04049    }
04050 }
04051 
04052 
04053 int misdn_lib_maxports_get(void)
04054 {
04055    /* BE AWARE WE HAVE NO cb_log() HERE! */
04056 
04057    int i = mISDN_open();
04058    int max=0;
04059    
04060    if (i<0)
04061       return -1;
04062 
04063    max = mISDN_get_stack_count(i);
04064    
04065    mISDN_close(i);
04066    
04067    return max;
04068 }
04069 
04070 
04071 void misdn_lib_nt_keepcalls( int kc)
04072 {
04073 #ifdef FEATURE_NET_KEEPCALLS
04074    if (kc) {
04075       struct misdn_stack *stack=get_misdn_stack();
04076       for ( ; stack; stack=stack->next) {
04077          stack->nst.feature |= FEATURE_NET_KEEPCALLS;
04078       }
04079    }
04080 #endif
04081 }
04082 
04083 void misdn_lib_nt_debug_init( int flags, char *file ) 
04084 {
04085    static int init=0;
04086    char *f;
04087    
04088    if (!flags) 
04089       f=NULL;
04090    else
04091       f=file;
04092 
04093    if (!init) {
04094       debug_init( flags , f, f, f);
04095       init=1;
04096    } else {
04097       debug_close();
04098       debug_init( flags , f, f, f);
04099    }
04100 }
04101 
04102 int misdn_lib_init(char *portlist, struct misdn_lib_iface *iface, void *user_data)
04103 {
04104    struct misdn_lib *mgr=calloc(1, sizeof(struct misdn_lib));
04105    char *tok, *tokb;
04106    char plist[1024];
04107    int midev;
04108    int port_count=0;
04109  
04110    cb_log = iface->cb_log;
04111    cb_event = iface->cb_event;
04112    cb_jb_empty = iface->cb_jb_empty;
04113    
04114    glob_mgr = mgr;
04115   
04116    msg_init();
04117 
04118    misdn_lib_nt_debug_init(0,NULL);
04119    
04120    if (!portlist || (*portlist == 0) ) return 1;
04121    
04122    init_flip_bits();
04123    
04124    {
04125       strncpy(plist,portlist, 1024);
04126       plist[1023] = 0;
04127    }
04128   
04129    memcpy(tone_425_flip,tone_425,TONE_425_SIZE);
04130    flip_buf_bits(tone_425_flip,TONE_425_SIZE);
04131 
04132    memcpy(tone_silence_flip,tone_SILENCE,TONE_SILENCE_SIZE);
04133    flip_buf_bits(tone_silence_flip,TONE_SILENCE_SIZE);
04134   
04135    midev=te_lib_init();
04136    mgr->midev=midev;
04137 
04138    port_count=mISDN_get_stack_count(midev);
04139   
04140    msg_queue_init(&mgr->activatequeue);
04141   
04142    if (sem_init(&mgr->new_msg, 1, 0)<0)
04143       sem_init(&mgr->new_msg, 0, 0);
04144  
04145    for (tok=strtok_r(plist," ,",&tokb );
04146         tok; 
04147         tok=strtok_r(NULL," ,",&tokb)) {
04148       int port = atoi(tok);
04149       struct misdn_stack *stack;
04150       static int first=1;
04151       int ptp=0;
04152     
04153       if (strstr(tok, "ptp"))
04154          ptp=1;
04155 
04156       if (port > port_count) {
04157          cb_log(0, port, "Couldn't Initialize this port since we have only %d ports\n", port_count);
04158          exit(1);
04159       }
04160       stack=stack_init(midev, port, ptp);
04161     
04162       if (!stack) {
04163          perror("stack_init");
04164          exit(1);
04165       }
04166     
04167       {
04168          int i;
04169          for(i=0;i<=stack->b_num; i++) {
04170             int r;
04171             if ((r=init_bc(stack, &stack->bc[i], stack->midev,port,i, "", 1))<0) {
04172                cb_log(0, port, "Got Err @ init_bc :%d\n",r);
04173                exit(1);
04174             }
04175          }
04176       }
04177 
04178       if (stack && first) {
04179          mgr->stack_list=stack;
04180          first=0;
04181          continue;
04182       }
04183     
04184       if (stack) {
04185          struct misdn_stack * help;
04186          for ( help=mgr->stack_list; help; help=help->next ) 
04187             if (help->next == NULL) break;
04188          help->next=stack;
04189       }
04190     
04191    }
04192   
04193    if (sem_init(&handler_started, 1, 0)<0)
04194       sem_init(&handler_started, 0, 0);
04195   
04196    cb_log(8, 0, "Starting Event Handler\n");
04197    pthread_create( &mgr->event_handler_thread, NULL,(void*)manager_event_handler, mgr);
04198   
04199    sem_wait(&handler_started) ;
04200    cb_log(8, 0, "Starting Event Catcher\n");
04201    pthread_create( &mgr->event_thread, NULL, (void*)misdn_lib_isdn_event_catcher, mgr);
04202   
04203    cb_log(8, 0, "Event Catcher started\n");
04204 
04205    global_state= MISDN_INITIALIZED; 
04206   
04207    return (mgr == NULL);
04208 }
04209 
04210 void misdn_lib_destroy(void)
04211 {
04212    struct misdn_stack *help;
04213    int i;
04214   
04215    for ( help=glob_mgr->stack_list; help; help=help->next ) {
04216       for(i=0;i<=help->b_num; i++) {
04217          char buf[1024];
04218          mISDN_write_frame(help->midev, buf, help->bc[i].addr, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
04219          help->bc[i].addr = 0;
04220       }
04221       cb_log (1, help->port, "Destroying this port.\n");
04222       stack_destroy(help);
04223    }
04224    
04225    if (global_state == MISDN_INITIALIZED) {
04226       cb_log(4, 0, "Killing Handler Thread\n");
04227       if ( pthread_cancel(glob_mgr->event_handler_thread) == 0 ) {
04228          cb_log(4, 0, "Joining Handler Thread\n");
04229          pthread_join(glob_mgr->event_handler_thread, NULL);
04230       }
04231      
04232       cb_log(4, 0, "Killing Main Thread\n");
04233       if ( pthread_cancel(glob_mgr->event_thread) == 0 ) {
04234          cb_log(4, 0, "Joining Main Thread\n");
04235          pthread_join(glob_mgr->event_thread, NULL);
04236       }
04237    }
04238   
04239    cb_log(1, 0, "Closing mISDN device\n");
04240    te_lib_destroy(glob_mgr->midev);
04241 }
04242 
04243 char *manager_isdn_get_info(enum event_e event)
04244 {
04245    return isdn_get_info(msgs_g , event, 0);
04246 }
04247 
04248 void manager_bchannel_activate(struct misdn_bchannel *bc)
04249 {
04250    char buf[128];
04251 
04252    struct misdn_stack *stack=get_stack_by_bc(bc);
04253 
04254    if (!stack) {
04255       cb_log(0, bc->port, "bchannel_activate: Stack not found !");
04256       return ;
04257    }
04258    
04259    /* we must activate if we are deactivated */
04260    clear_ibuffer(bc->astbuf);
04261    
04262    cb_log(5, stack->port, "$$$ Bchan Activated addr %x\n", bc->addr);
04263    
04264    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN,  DL_ESTABLISH | REQUEST, 0,0, NULL, TIMEOUT_1SEC);
04265 
04266    return ;
04267 }
04268 
04269 
04270 void manager_bchannel_deactivate(struct misdn_bchannel * bc)
04271 {
04272    struct misdn_stack *stack=get_stack_by_bc(bc);
04273    iframe_t dact;
04274    char buf[128]; 
04275 
04276    switch (bc->bc_state) {
04277       case BCHAN_ACTIVATED:
04278          break;
04279       case BCHAN_BRIDGED:
04280          misdn_split_conf(bc,bc->conf_id);
04281          break;
04282       default:
04283          cb_log( 4, bc->port,"bchan_deactivate: called but not activated\n");
04284          return ;
04285 
04286    }
04287    
04288    cb_log(5, stack->port, "$$$ Bchan deActivated addr %x\n", bc->addr);
04289    
04290    bc->generate_tone=0;
04291    
04292    dact.prim = DL_RELEASE | REQUEST;
04293    dact.addr = bc->addr | FLG_MSG_DOWN;
04294    dact.dinfo = 0;
04295    dact.len = 0;
04296    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN, DL_RELEASE|REQUEST,0,0,NULL, TIMEOUT_1SEC);
04297 
04298    clear_ibuffer(bc->astbuf);
04299    
04300    bc_state_change(bc,BCHAN_RELEASE);
04301   
04302    return;
04303 }
04304 
04305 
04306 int misdn_lib_tx2misdn_frm(struct misdn_bchannel *bc, void *data, int len)
04307 {
04308    struct misdn_stack *stack=get_stack_by_bc(bc);
04309    char buf[4096 + mISDN_HEADER_LEN];
04310    iframe_t *frm = (iframe_t*)buf;
04311    int r;
04312 
04313    switch (bc->bc_state) {
04314       case BCHAN_ACTIVATED:
04315       case BCHAN_BRIDGED:
04316          break;
04317       default:
04318          cb_log(3, bc->port, "BC not yet activated (state:%s)\n",bc_state2str(bc->bc_state));
04319          return -1;
04320    }
04321    
04322    frm->prim = DL_DATA|REQUEST;
04323    frm->dinfo = 0;
04324    frm->addr = bc->addr | FLG_MSG_DOWN ;
04325    
04326    frm->len = len;
04327    memcpy(&buf[mISDN_HEADER_LEN], data,len);
04328       
04329    if ( misdn_cap_is_speech(bc->capability) ) 
04330       flip_buf_bits( &buf[mISDN_HEADER_LEN], len);
04331    else
04332       cb_log(6, stack->port, "Writing %d data bytes\n",len);
04333    
04334    cb_log(9, stack->port, "Writing %d bytes 2 mISDN\n",len);
04335    r=mISDN_write(stack->midev, buf, frm->len + mISDN_HEADER_LEN, TIMEOUT_INFINIT);
04336    return 0;
04337 }
04338 
04339 
04340 
04341 /*
04342  * send control information to the channel (dsp-module)
04343  */
04344 void manager_ph_control(struct misdn_bchannel *bc, int c1, int c2)
04345 {
04346    unsigned char buffer[mISDN_HEADER_LEN+2*sizeof(int)];
04347    iframe_t *ctrl = (iframe_t *)buffer; /* preload data */
04348    unsigned int *d = (unsigned int*)&ctrl->data.p;
04349    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04350    
04351    cb_log(4,bc->port,"ph_control: c1:%x c2:%x\n",c1,c2);
04352    
04353    ctrl->prim = PH_CONTROL | REQUEST;
04354    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04355    ctrl->dinfo = 0;
04356    ctrl->len = sizeof(unsigned int)*2;
04357    *d++ = c1;
04358    *d++ = c2;
04359    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04360 }
04361 
04362 /*
04363  * allow live control of channel parameters
04364  */
04365 void isdn_lib_update_rxgain (struct misdn_bchannel *bc)
04366 {
04367    manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
04368 }
04369 
04370 void isdn_lib_update_txgain (struct misdn_bchannel *bc)
04371 {
04372    manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
04373 }
04374 
04375 void isdn_lib_update_ec (struct misdn_bchannel *bc)
04376 {
04377 #ifdef MISDN_1_2
04378    if (*bc->pipeline)
04379 #else
04380    if (bc->ec_enable)
04381 #endif
04382       manager_ec_enable(bc);
04383    else
04384       manager_ec_disable(bc);
04385 }
04386 
04387 void isdn_lib_stop_dtmf (struct misdn_bchannel *bc)
04388 {
04389    manager_ph_control(bc, DTMF_TONE_STOP, 0);
04390 }
04391 
04392 /*
04393  * send control information to the channel (dsp-module)
04394  */
04395 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len)
04396 {
04397    unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
04398    iframe_t *ctrl = (iframe_t *)buffer;
04399    unsigned int *d = (unsigned int *)&ctrl->data.p;
04400    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04401    
04402    ctrl->prim = PH_CONTROL | REQUEST;
04403    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04404    ctrl->dinfo = 0;
04405    ctrl->len = sizeof(unsigned int) + c2_len;
04406    *d++ = c1;
04407    memcpy(d, c2, c2_len);
04408    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04409 }
04410 
04411 
04412 
04413 
04414 void manager_clean_bc(struct misdn_bchannel *bc )
04415 {
04416    struct misdn_stack *stack=get_stack_by_bc(bc);
04417    
04418    if (bc->channel>0)
04419       empty_chan_in_stack(stack, bc->channel);
04420    empty_bc(bc);
04421    bc->in_use=0;
04422 
04423    cb_event(EVENT_CLEANUP, bc, NULL); 
04424 }
04425 
04426 
04427 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder)
04428 {
04429    struct misdn_bchannel *help;
04430    cb_log(4,stack->port, "*HOLDER: add %x\n",holder->l3_id);
04431    
04432    holder->stack_holder=1;
04433    holder->next=NULL;
04434    
04435    if (!stack->holding) {
04436       stack->holding = holder;
04437       return;
04438    }
04439   
04440    for (help=stack->holding;
04441         help;
04442         help=help->next) {
04443       if (!help->next) {
04444          help->next=holder;
04445          break;
04446       }
04447    }
04448   
04449 }
04450 
04451 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder)
04452 {
04453    struct misdn_bchannel *h1;
04454 
04455    if (!holder->stack_holder) return;
04456    
04457    holder->stack_holder=0;
04458    
04459    cb_log(4,stack->port, "*HOLDER: remove %x\n",holder->l3_id);
04460    if (!stack || ! stack->holding) return;
04461   
04462    if (holder == stack->holding) {
04463       stack->holding = stack->holding->next;
04464       return;
04465    }
04466    
04467    for (h1=stack->holding;
04468         h1;
04469         h1=h1->next) {
04470       if (h1->next == holder) {
04471          h1->next=h1->next->next;
04472          return ;
04473       }
04474    }
04475 }
04476 
04477 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id)
04478 {
04479    struct misdn_bchannel *help;
04480 
04481    cb_log(4,stack?stack->port:0, "*HOLDER: find %lx\n",l3id);
04482    
04483    if (!stack) return NULL;
04484    
04485    for (help=stack->holding;
04486         help;
04487         help=help->next) {
04488       if (help->l3_id == l3id) {
04489          cb_log(4,stack->port, "*HOLDER: found bc\n");
04490          return help;
04491       }
04492    }
04493 
04494    cb_log(4,stack->port, "*HOLDER: find nothing\n");
04495    return NULL;
04496 }
04497 
04498 /*!
04499  * \brief Find a held call's B channel record.
04500  *
04501  * \param port Port the call is on.
04502  * \param l3_id mISDN Layer 3 ID of held call.
04503  *
04504  * \return Found bc-record or NULL.
04505  */
04506 struct misdn_bchannel *misdn_lib_find_held_bc(int port, int l3_id)
04507 {
04508    struct misdn_bchannel *bc;
04509    struct misdn_stack *stack;
04510 
04511    bc = NULL;
04512    for (stack = get_misdn_stack(); stack; stack = stack->next) {
04513       if (stack->port == port) {
04514          bc = stack_holder_find(stack, l3_id);
04515          break;
04516       }
04517    }
04518 
04519    return bc;
04520 }
04521 
04522 void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone) 
04523 {
04524    char buf[mISDN_HEADER_LEN + 128] = "";
04525    iframe_t *frm = (iframe_t*)buf;
04526 
04527    switch(tone) {
04528    case TONE_DIAL:
04529       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_DIALTONE); 
04530    break;
04531    
04532    case TONE_ALERTING:
04533       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_RINGING);  
04534    break;
04535    
04536    case TONE_HANGUP:
04537       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_HANGUP);   
04538    break;
04539 
04540    case TONE_NONE:
04541    default:
04542       manager_ph_control(bc, TONE_PATT_OFF, TONE_GERMAN_HANGUP);  
04543    }
04544 
04545    frm->prim=DL_DATA|REQUEST;
04546    frm->addr=bc->addr|FLG_MSG_DOWN;
04547    frm->dinfo=0;
04548    frm->len=128;
04549    
04550    mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
04551 }
04552 
04553 
04554 void manager_ec_enable(struct misdn_bchannel *bc)
04555 {
04556    struct misdn_stack *stack=get_stack_by_bc(bc);
04557    
04558    cb_log(4, stack?stack->port:0,"ec_enable\n");
04559 
04560    if (!misdn_cap_is_speech(bc->capability)) {
04561       cb_log(1, stack?stack->port:0, " --> no speech? cannot enable EC\n");
04562    } else {
04563 
04564 #ifdef MISDN_1_2
04565    if (*bc->pipeline) {
04566       cb_log(3, stack?stack->port:0,"Sending Control PIPELINE_CFG %s\n",bc->pipeline);
04567       manager_ph_control_block(bc, PIPELINE_CFG, bc->pipeline, strlen(bc->pipeline) + 1);
04568    }
04569 #else
04570    int ec_arr[2];
04571 
04572    if (bc->ec_enable) {
04573       cb_log(3, stack?stack->port:0,"Sending Control ECHOCAN_ON taps:%d\n",bc->ec_deftaps);
04574    
04575       switch (bc->ec_deftaps) {
04576       case 4:
04577       case 8:
04578       case 16:
04579       case 32:
04580       case 64:
04581       case 128:
04582       case 256:
04583       case 512:
04584       case 1024:
04585          cb_log(4, stack->port, "Taps is %d\n",bc->ec_deftaps);
04586          break;
04587       default:
04588          cb_log(0, stack->port, "Taps should be power of 2\n");
04589          bc->ec_deftaps=128;
04590       }
04591    
04592       ec_arr[0]=bc->ec_deftaps;
04593       ec_arr[1]=0;
04594       
04595       manager_ph_control_block(bc,  ECHOCAN_ON,  ec_arr, sizeof(ec_arr));
04596    }
04597 #endif
04598    }
04599 }
04600 
04601 
04602 
04603 void manager_ec_disable(struct misdn_bchannel *bc)
04604 {
04605    struct misdn_stack *stack=get_stack_by_bc(bc);
04606    
04607    cb_log(4, stack?stack->port:0," --> ec_disable\n");
04608 
04609    if (!misdn_cap_is_speech(bc->capability)) {
04610       cb_log(1, stack?stack->port:0, " --> no speech? cannot disable EC\n");
04611       return;
04612    }
04613 
04614 #ifdef MISDN_1_2
04615    manager_ph_control_block(bc, PIPELINE_CFG, "", 0);
04616 #else
04617    if ( ! bc->ec_enable) {
04618       cb_log(3, stack?stack->port:0, "Sending Control ECHOCAN_OFF\n");
04619       manager_ph_control(bc,  ECHOCAN_OFF, 0);
04620    }
04621 #endif
04622 }
04623 
04624 struct misdn_stack* get_misdn_stack(void) {
04625    return glob_mgr->stack_list;
04626 }
04627 
04628 
04629 
04630 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id)
04631 {
04632    char data[16] = "";
04633 
04634    bc_state_change(bc,BCHAN_BRIDGED);
04635    manager_ph_control(bc, CMX_RECEIVE_OFF, 0);
04636    manager_ph_control(bc, CMX_CONF_JOIN, conf_id);
04637 
04638    cb_log(3,bc->port, "Joining bc:%x in conf:%d\n",bc->addr,conf_id);
04639 
04640    misdn_lib_tx2misdn_frm(bc, data, sizeof(data) - 1);
04641 }
04642 
04643 
04644 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id)
04645 {
04646    bc_state_change(bc,BCHAN_ACTIVATED);
04647    manager_ph_control(bc, CMX_RECEIVE_ON, 0);
04648    manager_ph_control(bc, CMX_CONF_SPLIT, conf_id);
04649 
04650    cb_log(4,bc->port, "Splitting bc:%x in conf:%d\n",bc->addr,conf_id);
04651 }
04652 
04653 void misdn_lib_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2)
04654 {
04655    int conf_id = bc1->pid + 1;
04656    struct misdn_bchannel *bc_list[] = { bc1, bc2, NULL };
04657    struct misdn_bchannel **bc;
04658 
04659    cb_log(4, bc1->port, "I Send: BRIDGE from:%d to:%d\n",bc1->port,bc2->port);
04660 
04661    for (bc=bc_list; *bc;  bc++) { 
04662       (*bc)->conf_id=conf_id;
04663       cb_log(4, (*bc)->port, " --> bc_addr:%x\n",(*bc)->addr);
04664    
04665       switch((*bc)->bc_state) {
04666          case BCHAN_ACTIVATED:
04667             misdn_join_conf(*bc,conf_id);
04668             break;
04669          default:
04670             bc_next_state_change(*bc,BCHAN_BRIDGED);
04671             break;
04672       }
04673    }
04674 }
04675 
04676 void misdn_lib_split_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2)
04677 {
04678 
04679    struct misdn_bchannel *bc_list[]={
04680       bc1,bc2,NULL
04681    };
04682    struct misdn_bchannel **bc;
04683       
04684    for (bc=bc_list; *bc;  bc++) { 
04685       if ( (*bc)->bc_state == BCHAN_BRIDGED){
04686          misdn_split_conf( *bc, (*bc)->conf_id);
04687       } else {
04688          cb_log( 2, (*bc)->port, "BC not bridged (state:%s) so not splitting it\n",bc_state2str((*bc)->bc_state));
04689       }
04690    }
04691    
04692 }
04693 
04694 
04695 
04696 void misdn_lib_echo(struct misdn_bchannel *bc, int onoff)
04697 {
04698    cb_log(3,bc->port, " --> ECHO %s\n", onoff?"ON":"OFF");
04699    manager_ph_control(bc, onoff?CMX_ECHO_ON:CMX_ECHO_OFF, 0);
04700 }
04701 
04702 
04703 
04704 void misdn_lib_reinit_nt_stack(int port)
04705 {
04706    struct misdn_stack *stack=find_stack_by_port(port);
04707    
04708    if (stack) {
04709       stack->l2link=0;
04710       stack->blocked=0;
04711    
04712       cleanup_Isdnl3(&stack->nst);
04713       cleanup_Isdnl2(&stack->nst);
04714 
04715 
04716       memset(&stack->nst, 0, sizeof(net_stack_t));
04717       memset(&stack->mgr, 0, sizeof(manager_t));
04718    
04719       stack->mgr.nst = &stack->nst;
04720       stack->nst.manager = &stack->mgr;
04721     
04722       stack->nst.l3_manager = handle_event_nt;
04723       stack->nst.device = glob_mgr->midev;
04724       stack->nst.cardnr = port;
04725       stack->nst.d_stid = stack->d_stid;
04726    
04727       stack->nst.feature = FEATURE_NET_HOLD;
04728       if (stack->ptp)
04729          stack->nst.feature |= FEATURE_NET_PTP;
04730       if (stack->pri)
04731          stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
04732       
04733       stack->nst.l1_id = stack->lower_id;
04734       stack->nst.l2_id = stack->upper_id;
04735       
04736       msg_queue_init(&stack->nst.down_queue);
04737    
04738       Isdnl2Init(&stack->nst);
04739       Isdnl3Init(&stack->nst);
04740 
04741       if (!stack->ptp)
04742          misdn_lib_get_l1_up(stack);
04743       misdn_lib_get_l2_up(stack);
04744    }
04745 }
04746 
04747