Fri Jul 24 00:40:57 2009

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 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id);
00029 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id);
00030 
00031 int queue_cleanup_bc(struct misdn_bchannel *bc) ;
00032 
00033 int misdn_lib_get_l2_up(struct misdn_stack *stack);
00034 
00035 struct misdn_stack* get_misdn_stack( void );
00036 
00037 static int set_chan_in_stack(struct misdn_stack *stack, int channel);
00038 
00039 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh);
00040 
00041 int misdn_lib_port_is_pri(int port)
00042 {
00043    struct misdn_stack *stack=get_misdn_stack();
00044    for ( ; stack; stack=stack->next) {
00045       if (stack->port == port) {
00046          return stack->pri;
00047       }
00048    }
00049    
00050    return -1;
00051 }
00052 
00053 int misdn_lib_port_is_nt(int port)
00054 {
00055    struct misdn_stack *stack=get_misdn_stack();
00056    for ( ; stack; stack=stack->next) {
00057       if (stack->port == port) {
00058          return stack->nt;
00059       }
00060    }
00061    
00062    return -1;
00063 }
00064 
00065 void misdn_make_dummy(struct misdn_bchannel *dummybc, int port, int l3id, int nt, int channel) 
00066 {
00067    memset (dummybc,0,sizeof(struct misdn_bchannel));
00068    dummybc->port=port;
00069    if (l3id==0) 
00070       dummybc->l3_id = MISDN_ID_DUMMY;
00071    else
00072       dummybc->l3_id=l3id;
00073 
00074    dummybc->nt=nt;
00075    dummybc->dummy=1;
00076    dummybc->channel=channel;
00077 }
00078 
00079 int misdn_lib_port_block(int port)
00080 {
00081    struct misdn_stack *stack=get_misdn_stack();
00082    for ( ; stack; stack=stack->next) {
00083       if (stack->port == port) {
00084          stack->blocked=1;
00085          return 0;
00086       }
00087    }
00088    return -1;
00089 
00090 }
00091 
00092 int misdn_lib_port_unblock(int port)
00093 {
00094    struct misdn_stack *stack=get_misdn_stack();
00095    for ( ; stack; stack=stack->next) {
00096       if (stack->port == port) {
00097          stack->blocked=0;
00098          return 0;
00099       }
00100    }
00101    return -1;
00102 
00103 }
00104 
00105 int misdn_lib_is_port_blocked(int port)
00106 {  
00107    struct misdn_stack *stack=get_misdn_stack();
00108    for ( ; stack; stack=stack->next) {
00109       if (stack->port == port) {
00110          return stack->blocked;
00111       }
00112    }
00113    return -1;
00114 }
00115 
00116 int misdn_lib_is_ptp(int port)
00117 {
00118    struct misdn_stack *stack=get_misdn_stack();
00119    for ( ; stack; stack=stack->next) {
00120       if (stack->port == port) return stack->ptp;
00121    }
00122    return -1;
00123 }
00124 
00125 int misdn_lib_get_maxchans(int port) 
00126 {
00127    struct misdn_stack *stack=get_misdn_stack();
00128    for ( ; stack; stack=stack->next) {
00129       if (stack->port == port) {
00130          if (stack->pri) 
00131             return 30;
00132          else
00133             return 2;
00134       }
00135    }
00136    return -1;
00137 }
00138 
00139 
00140 struct misdn_stack* get_stack_by_bc(struct misdn_bchannel *bc)
00141 {
00142    struct misdn_stack *stack=get_misdn_stack();
00143 
00144    if (!bc) return NULL;
00145    
00146    for ( ; stack; stack=stack->next) {
00147       int i;
00148       for (i=0; i <=stack->b_num; i++) {
00149          if ( bc->port == stack->port) return stack;
00150       }
00151    }
00152 
00153    return NULL;
00154 }
00155 
00156 
00157 void get_show_stack_details(int port, char *buf)
00158 {
00159    struct misdn_stack *stack=get_misdn_stack();
00160    
00161    for ( ; stack; stack=stack->next) {
00162       if (stack->port == port) break;
00163    }
00164    
00165    if (stack) {
00166       sprintf(buf, "* Port %d Type %s Prot. %s L2Link %s L1Link:%s Blocked:%d", stack->port, stack->nt?"NT":"TE", stack->ptp?"PTP":"PMP", stack->l2link?"UP":"DOWN", stack->l1link?"UP":"DOWN",stack->blocked);
00167 
00168    } else {
00169       buf[0]=0;
00170    }
00171    
00172 }
00173 
00174 
00175 static int nt_err_cnt =0 ;
00176 
00177 enum global_states {
00178    MISDN_INITIALIZING,
00179    MISDN_INITIALIZED
00180 } ;
00181 
00182 static enum global_states  global_state=MISDN_INITIALIZING;
00183 
00184 
00185 #include <mISDNuser/net_l2.h>
00186 #include <mISDNuser/tone.h>
00187 #include <unistd.h>
00188 #include <semaphore.h>
00189 #include <pthread.h>
00190 #include <signal.h>
00191 
00192 #include "isdn_lib.h"
00193 
00194 
00195 struct misdn_lib {
00196    int midev;
00197    int midev_nt;
00198 
00199    pthread_t event_thread;
00200    pthread_t event_handler_thread;
00201 
00202    void *user_data;
00203 
00204    msg_queue_t upqueue;
00205    msg_queue_t activatequeue; 
00206   
00207    sem_t new_msg;
00208   
00209    struct misdn_stack *stack_list;
00210 } ;
00211 
00212 #ifndef ECHOCAN_ON
00213 #define ECHOCAN_ON 123
00214 #define ECHOCAN_OFF 124
00215 #endif
00216 
00217 #define MISDN_DEBUG 0
00218 
00219 void misdn_tx_jitter(struct misdn_bchannel *bc, int len);
00220 
00221 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id);
00222 
00223 struct misdn_bchannel *find_bc_by_confid(unsigned long confid);
00224 
00225 struct misdn_bchannel *stack_holder_find_bychan(struct misdn_stack *stack, int chan);
00226 
00227 int setup_bc(struct misdn_bchannel *bc);
00228 
00229 int manager_isdn_handler(iframe_t *frm ,msg_t *msg);
00230 
00231 int misdn_lib_port_restart(int port);
00232 int misdn_lib_pid_restart(int pid);
00233 
00234 extern struct isdn_msg msgs_g[]; 
00235 
00236 #define ISDN_PID_L3_B_USER 0x430000ff
00237 #define ISDN_PID_L4_B_USER 0x440000ff
00238 
00239 /* #define MISDN_IBUF_SIZE 1024 */
00240 #define MISDN_IBUF_SIZE 512
00241 
00242 /*  Fine Tuning of Inband  Signalling time */
00243 #define TONE_ALERT_CNT 41 /*  1 Sec  */
00244 #define TONE_ALERT_SILENCE_CNT 200 /*  4 Sec */
00245 
00246 #define TONE_BUSY_CNT 20 /*  ? */
00247 #define TONE_BUSY_SILENCE_CNT 48 /*  ? */
00248 
00249 static int  entity;
00250 
00251 static struct misdn_lib *glob_mgr;
00252 
00253 char tone_425_flip[TONE_425_SIZE];
00254 char tone_silence_flip[TONE_SILENCE_SIZE];
00255 
00256 static void misdn_lib_isdn_event_catcher(void *arg);
00257 static int handle_event_nt(void *dat, void *arg);
00258 
00259 
00260 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder);
00261 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder);
00262 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id);
00263 
00264 /* from isdn_lib.h */
00265 int init_bc(struct misdn_stack * stack,  struct misdn_bchannel *bc, int midev, int port, int bidx, char *msn, int firsttime);
00266 struct misdn_stack* stack_init(int midev,  int port, int ptp);
00267 void stack_destroy(struct misdn_stack* stack);
00268    /* user iface */
00269 int te_lib_init( void ) ; /* returns midev */
00270 void te_lib_destroy(int midev) ;
00271 struct misdn_bchannel *manager_find_bc_by_pid(int pid);
00272 struct misdn_bchannel *manager_find_bc_holded(struct misdn_bchannel* bc);
00273 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len);
00274 void manager_clean_bc(struct misdn_bchannel *bc );
00275 void manager_bchannel_setup (struct misdn_bchannel *bc);
00276 void manager_bchannel_cleanup (struct misdn_bchannel *bc);
00277 
00278 void ec_chunk( struct misdn_bchannel *bc, unsigned char *rxchunk, unsigned char *txchunk, int chunk_size);
00279    /* end */
00280 int bchdev_echocancel_activate(struct misdn_bchannel* dev);
00281 void bchdev_echocancel_deactivate(struct misdn_bchannel* dev);
00282 /* end */
00283 
00284 
00285 static char *bearer2str(int cap) {
00286    static char *bearers[]={
00287       "Speech",
00288       "Audio 3.1k",
00289       "Unres Digital",
00290       "Res Digital",
00291       "Unknown Bearer"
00292    };
00293    
00294    switch (cap) {
00295    case INFO_CAPABILITY_SPEECH:
00296       return bearers[0];
00297       break;
00298    case INFO_CAPABILITY_AUDIO_3_1K:
00299       return bearers[1];
00300       break;
00301    case INFO_CAPABILITY_DIGITAL_UNRESTRICTED:
00302       return bearers[2];
00303       break;
00304    case INFO_CAPABILITY_DIGITAL_RESTRICTED:
00305       return bearers[3];
00306       break;
00307    default:
00308       return bearers[4];
00309       break;
00310    }
00311 }
00312 
00313 
00314 static char flip_table[256];
00315 
00316 static void init_flip_bits(void)
00317 {
00318    int i,k;
00319    
00320    for (i = 0 ; i < 256 ; i++) {
00321       unsigned char sample = 0 ;
00322       for (k = 0; k<8; k++) {
00323          if ( i & 1 << k ) sample |= 0x80 >>  k;
00324       }
00325       flip_table[i] = sample;
00326    }
00327 }
00328 
00329 static char * flip_buf_bits ( char * buf , int len)
00330 {
00331    int i;
00332    char * start = buf;
00333    
00334    for (i = 0 ; i < len; i++) {
00335       buf[i] = flip_table[(unsigned char)buf[i]];
00336    }
00337    
00338    return start;
00339 }
00340 
00341 
00342 
00343 
00344 static msg_t *create_l2msg(int prim, int dinfo, int size) /* NT only */
00345 {
00346    int i = 0;
00347    msg_t *dmsg;
00348   
00349    while(i < 10)
00350    {
00351       dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00352       if (dmsg)
00353          return(dmsg);
00354       
00355       if (!i)
00356          printf("cannot allocate memory, trying again...\n");
00357       i++;
00358       usleep(300000);
00359    }
00360    printf("cannot allocate memory, system overloaded.\n");
00361    exit(-1);
00362 }
00363 
00364 
00365 
00366 msg_t *create_l3msg(int prim, int mt, int dinfo, int size, int ntmode)
00367 {
00368    int i = 0;
00369    msg_t *dmsg;
00370    Q931_info_t *qi;
00371    iframe_t *frm;
00372   
00373    if (!ntmode)
00374       size = sizeof(Q931_info_t)+2;
00375   
00376    while(i < 10) {
00377       if (ntmode) {
00378          dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00379          if (dmsg) {
00380             return(dmsg);
00381          }
00382       } else {
00383          dmsg = alloc_msg(size+256+mISDN_HEADER_LEN+DEFAULT_HEADROOM);
00384          if (dmsg)
00385          {
00386             memset(msg_put(dmsg,size+mISDN_HEADER_LEN), 0, size+mISDN_HEADER_LEN);
00387             frm = (iframe_t *)dmsg->data;
00388             frm->prim = prim;
00389             frm->dinfo = dinfo;
00390             qi = (Q931_info_t *)(dmsg->data + mISDN_HEADER_LEN);
00391             qi->type = mt;
00392             return(dmsg);
00393          }
00394       }
00395     
00396       if (!i) printf("cannot allocate memory, trying again...\n");
00397       i++;
00398       usleep(300000);
00399    }
00400    printf("cannot allocate memory, system overloaded.\n");
00401    exit(-1);
00402 }
00403 
00404 
00405 static int send_msg (int midev, struct misdn_bchannel *bc, msg_t *dmsg)
00406 {
00407    iframe_t *frm = (iframe_t *)dmsg->data;
00408    struct misdn_stack *stack=get_stack_by_bc(bc);
00409 
00410    if (!stack) {
00411       cb_log(0,bc->port,"send_msg: IEK!! no stack\n ");
00412       return -1;
00413    }
00414    
00415    frm->addr = (stack->upper_id | FLG_MSG_DOWN);
00416    frm->dinfo = bc->l3_id;
00417    frm->len = (dmsg->len) - mISDN_HEADER_LEN;
00418             
00419    cb_log(4,stack->port,"Sending msg, prim:%x addr:%x dinfo:%x\n",frm->prim,frm->addr,frm->dinfo);
00420 
00421    mISDN_write(midev, dmsg->data, dmsg->len, TIMEOUT_1SEC);
00422    free_msg(dmsg);
00423 
00424    return 0;
00425 }
00426 
00427 
00428 static int mypid=1;
00429 
00430 
00431 int misdn_cap_is_speech(int cap)
00432 /** Poor mans version **/
00433 {
00434    if ( (cap != INFO_CAPABILITY_DIGITAL_UNRESTRICTED) &&
00435         (cap != INFO_CAPABILITY_DIGITAL_RESTRICTED) ) return 1;
00436    return 0;
00437 }
00438 
00439 int misdn_inband_avail(struct misdn_bchannel *bc)
00440 {
00441 
00442    /*if ! early_bconnect we have never inband available*/
00443    if ( ! bc->early_bconnect ) return 0;
00444    
00445    switch (bc->progress_indicator) {
00446    case INFO_PI_INBAND_AVAILABLE:
00447    case INFO_PI_CALL_NOT_E2E_ISDN:
00448    case INFO_PI_CALLED_NOT_ISDN:
00449       return 1;
00450    default:
00451       return 0;
00452    }
00453    return 0;
00454 }
00455 
00456 
00457 static void dump_chan_list(struct misdn_stack *stack)
00458 {
00459    int i;
00460 
00461    for (i=0; i <= stack->b_num; i++) {
00462       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);
00463    }
00464 }
00465 
00466 
00467 void misdn_dump_chanlist()
00468 {
00469    struct misdn_stack *stack=get_misdn_stack();
00470    for ( ; stack; stack=stack->next) {
00471       dump_chan_list(stack);
00472    }
00473 
00474 }
00475 
00476 int set_chan_in_stack(struct misdn_stack *stack, int channel)
00477 {
00478 
00479    cb_log(4,stack->port,"set_chan_in_stack: %d\n",channel);
00480    dump_chan_list(stack);
00481    if (channel >=1 && channel <= MAX_BCHANS) {
00482       if (!stack->channels[channel-1])
00483          stack->channels[channel-1] = 1;
00484       else {
00485          cb_log(4,stack->port,"channel already in use:%d\n", channel );
00486          return -1;
00487       }
00488    } else {
00489       cb_log(0,stack->port,"couldn't set channel %d in\n", channel );
00490       return -1;
00491    }
00492   
00493    return 0;
00494 }
00495 
00496 
00497 
00498 static int find_free_chan_in_stack(struct misdn_stack *stack, struct misdn_bchannel *bc, int channel, int dec)
00499 {
00500    int i;
00501    int chan=0;
00502    int bnums = stack->pri ? stack->b_num : stack->b_num - 1;
00503 
00504    if (bc->channel_found)  
00505       return 0;
00506    
00507    bc->channel_found=1;
00508 
00509    cb_log(5,stack->port,"find_free_chan: req_chan:%d\n",channel);
00510 
00511    if (channel < 0 || channel > MAX_BCHANS) {
00512       cb_log(0, stack->port, " !! out of bound call to find_free_chan_in_stack! (ch:%d)\n", channel);
00513       return 0;
00514    }
00515    
00516    channel--;
00517 
00518    if (dec) {
00519       for (i = bnums; i >=0; i--) {
00520          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 Dchannel ;) and work with chan preselection */
00521             if (!stack->channels[i]) {
00522                cb_log (3, stack->port, " --> found chan%s: %d\n", channel>=0?" (preselected)":"", i+1);
00523                chan=i+1;
00524                break;
00525             }
00526          }
00527       }
00528    } else {
00529       for (i = 0; i <= bnums; i++) {
00530          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 Dchannel ;) 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    }
00539 
00540    if (!chan) {
00541       cb_log (1, stack->port, " !! NO FREE CHAN IN STACK\n");
00542       dump_chan_list(stack);
00543       bc->out_cause=34;
00544       return -1;
00545    }  
00546 
00547    if (set_chan_in_stack(stack, chan)<0) {
00548       cb_log (0, stack->port, "Channel Already in use:%d\n", chan);
00549       bc->out_cause=44;
00550       return -1;
00551    }
00552 
00553    bc->channel=chan;
00554    return 0;
00555 }
00556 
00557 static int empty_chan_in_stack(struct misdn_stack *stack, int channel)
00558 {
00559    if (channel<=0 || channel>MAX_BCHANS) {
00560       cb_log(0,stack?stack->port:0, "empty_chan_in_stack: cannot empty channel %d\n",channel);
00561       return -1;
00562    }
00563    
00564    cb_log (4, stack?stack->port:0, "empty_chan_in_stack: %d\n",channel); 
00565    stack->channels[channel-1] = 0;
00566    dump_chan_list(stack);
00567    return 0;
00568 }
00569 
00570 char *bc_state2str(enum bchannel_state state) {
00571    int i;
00572    
00573    struct bchan_state_s {
00574       char *n;
00575       enum bchannel_state s;
00576    } states[] = {
00577       {"BCHAN_CLEANED", BCHAN_CLEANED },
00578       {"BCHAN_EMPTY", BCHAN_EMPTY},
00579       {"BCHAN_SETUP", BCHAN_SETUP},
00580       {"BCHAN_SETUPED", BCHAN_SETUPED},
00581       {"BCHAN_ACTIVE", BCHAN_ACTIVE},
00582       {"BCHAN_ACTIVATED", BCHAN_ACTIVATED},
00583       {"BCHAN_BRIDGE",  BCHAN_BRIDGE},
00584       {"BCHAN_BRIDGED", BCHAN_BRIDGED},
00585       {"BCHAN_RELEASE", BCHAN_RELEASE},
00586       {"BCHAN_RELEASED", BCHAN_RELEASED},
00587       {"BCHAN_CLEAN", BCHAN_CLEAN},
00588       {"BCHAN_CLEAN_REQUEST", BCHAN_CLEAN_REQUEST},
00589       {"BCHAN_ERROR", BCHAN_ERROR}
00590    };
00591    
00592    for (i=0; i< sizeof(states)/sizeof(struct bchan_state_s); i++)
00593       if ( states[i].s == state)
00594          return states[i].n;
00595 
00596    return "UNKNOWN";
00597 }
00598 
00599 void bc_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00600 {
00601    cb_log(5,bc->port,"BC_STATE_CHANGE: l3id:%x from:%s to:%s\n",
00602       bc->l3_id,
00603           bc_state2str(bc->bc_state),
00604           bc_state2str(state) );
00605    
00606    switch (state) {
00607       case BCHAN_ACTIVATED:
00608          if (bc->next_bc_state ==  BCHAN_BRIDGED) {
00609             misdn_join_conf(bc, bc->conf_id);
00610             bc->next_bc_state = BCHAN_EMPTY;
00611             return;
00612          }
00613       default:
00614          bc->bc_state=state;
00615          break;
00616    }
00617 }
00618 
00619 static void bc_next_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00620 {
00621    cb_log(5,bc->port,"BC_NEXT_STATE_CHANGE: from:%s to:%s\n",
00622           bc_state2str(bc->next_bc_state),
00623           bc_state2str(state) );
00624 
00625    bc->next_bc_state=state;
00626 }
00627 
00628 
00629 static void empty_bc(struct misdn_bchannel *bc)
00630 {
00631    bc->dummy=0;
00632 
00633    bc->bframe_len=0;
00634 
00635    bc->cw= 0;
00636 
00637    bc->dec=0;
00638    bc->channel = 0;
00639 
00640    bc->sending_complete = 0;
00641 
00642    bc->restart_channel=0;
00643    
00644    bc->conf_id = 0;
00645 
00646    bc->need_more_infos = 0;
00647    
00648    bc->send_dtmf=0;
00649    bc->nodsp=0;
00650    bc->nojitter=0;
00651 
00652    bc->time_usec=0;
00653    
00654    bc->rxgain=0;
00655    bc->txgain=0;
00656 
00657    bc->crypt=0;
00658    bc->curptx=0; bc->curprx=0;
00659    
00660    bc->crypt_key[0] = 0;
00661    
00662    bc->generate_tone=0;
00663    bc->tone_cnt=0;
00664   
00665    bc->dnumplan=NUMPLAN_UNKNOWN;
00666    bc->onumplan=NUMPLAN_UNKNOWN;
00667    bc->rnumplan=NUMPLAN_UNKNOWN;
00668    bc->cpnnumplan=NUMPLAN_UNKNOWN;
00669    
00670 
00671    bc->active = 0;
00672 
00673    bc->early_bconnect = 1;
00674    
00675 #ifdef MISDN_1_2
00676    *bc->pipeline = 0;
00677 #else
00678    bc->ec_enable = 0;
00679    bc->ec_deftaps = 128;
00680 #endif
00681 
00682    bc->AOCD_need_export = 0;
00683 
00684    bc->orig=0;
00685   
00686    bc->cause=16;
00687    bc->out_cause=16;
00688    bc->pres=0 ; /* screened */
00689    
00690    bc->evq=EVENT_NOTHING;
00691 
00692    bc->progress_coding=0;
00693    bc->progress_location=0;
00694    bc->progress_indicator=0;
00695    
00696 /** Set Default Bearer Caps **/
00697    bc->capability=INFO_CAPABILITY_SPEECH;
00698    bc->law=INFO_CODEC_ALAW;
00699    bc->mode=0;
00700    bc->rate=0x10;
00701    bc->user1=0;
00702    bc->urate=0;
00703    
00704    bc->hdlc=0;
00705    
00706    
00707    bc->info_dad[0] = 0;
00708    bc->display[0] = 0;
00709    bc->infos_pending[0] = 0;
00710    bc->cad[0] = 0;
00711    bc->oad[0] = 0;
00712    bc->dad[0] = 0;
00713    bc->rad[0] = 0;
00714    bc->orig_dad[0] = 0;
00715    bc->uu[0]=0;
00716    bc->uulen=0;
00717    
00718    bc->fac_in.Function = Fac_None;
00719    bc->fac_out.Function = Fac_None;
00720    
00721    bc->te_choose_channel = 0;
00722    bc->channel_found= 0;
00723 
00724    gettimeofday(&bc->last_used, NULL);
00725 }
00726 
00727 
00728 static int clean_up_bc(struct misdn_bchannel *bc)
00729 {
00730    int ret=0;
00731    unsigned char buff[32];
00732    struct misdn_stack * stack;
00733 
00734    cb_log(3, bc?bc->port:0, "$$$ CLEANUP CALLED pid:%d\n", bc?bc->pid:-1);
00735    
00736    if (!bc  ) return -1;
00737    stack=get_stack_by_bc(bc);
00738    
00739    if (!stack) return -1;
00740    
00741    switch (bc->bc_state ) {
00742    case BCHAN_CLEANED:
00743       cb_log(5, stack->port, "$$$ Already cleaned up bc with stid :%x\n", bc->b_stid);
00744       return -1;
00745       
00746    default:
00747       break;
00748    }
00749    
00750    cb_log(2, stack->port, "$$$ Cleaning up bc with stid :%x pid:%d\n", bc->b_stid, bc->pid);
00751    
00752    manager_ec_disable(bc);
00753 
00754    manager_bchannel_deactivate(bc);
00755 
00756    mISDN_write_frame(stack->midev, buff, bc->layer_id|FLG_MSG_TARGET|FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
00757    
00758    bc->b_stid = 0;
00759    bc_state_change(bc, BCHAN_CLEANED);
00760    
00761    return ret;
00762 }
00763 
00764 
00765 
00766 static void clear_l3(struct misdn_stack *stack)
00767 {
00768    int i;
00769 
00770    for (i=0; i<=stack->b_num; i++) {
00771       if (global_state == MISDN_INITIALIZED)  {
00772          cb_event(EVENT_CLEANUP, &stack->bc[i], NULL); 
00773          empty_chan_in_stack(stack,i+1);
00774          empty_bc(&stack->bc[i]);
00775          clean_up_bc(&stack->bc[i]);
00776          stack->bc[i].in_use = 0;
00777       }
00778       
00779    } 
00780 }
00781 
00782 static int new_te_id = 0;
00783 
00784 #define MAXPROCS 0x100
00785 
00786 static int misdn_lib_get_l1_down(struct misdn_stack *stack)
00787 {
00788    /* Pull Up L1 */ 
00789    iframe_t act;
00790    act.prim = PH_DEACTIVATE | REQUEST; 
00791    act.addr = stack->lower_id|FLG_MSG_DOWN;
00792    act.dinfo = 0;
00793    act.len = 0;
00794 
00795    cb_log(1, stack->port, "SENDING PH_DEACTIVATE | REQ\n");
00796    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00797 }
00798 
00799 
00800 static int misdn_lib_get_l2_down(struct misdn_stack *stack)
00801 {
00802    
00803    if (stack->ptp && (stack->nt) ) {
00804       msg_t *dmsg;
00805       /* L2 */
00806       dmsg = create_l2msg(DL_RELEASE| REQUEST, 0, 0);
00807       
00808       if (stack->nst.manager_l3(&stack->nst, dmsg))
00809          free_msg(dmsg);
00810       
00811    } else {
00812       iframe_t act;
00813       
00814       act.prim = DL_RELEASE| REQUEST;
00815       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00816       
00817       act.dinfo = 0;
00818       act.len = 0;
00819       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00820    }
00821    
00822    return 0;
00823 }
00824 
00825 
00826 static int misdn_lib_get_l1_up(struct misdn_stack *stack)
00827 {
00828    /* Pull Up L1 */ 
00829    iframe_t act;
00830    act.prim = PH_ACTIVATE | REQUEST; 
00831    act.addr = (stack->upper_id | FLG_MSG_DOWN)  ;
00832 
00833    
00834    act.dinfo = 0;
00835    act.len = 0;
00836 
00837    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00838 
00839 }
00840 
00841 int misdn_lib_get_l2_up(struct misdn_stack *stack)
00842 {
00843    
00844    if (stack->ptp && (stack->nt) ) {
00845       msg_t *dmsg;
00846       /* L2 */
00847       dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
00848       
00849       if (stack->nst.manager_l3(&stack->nst, dmsg))
00850          free_msg(dmsg);
00851       
00852    } else {
00853       iframe_t act;
00854       
00855       act.prim = DL_ESTABLISH | REQUEST;
00856       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00857       
00858       act.dinfo = 0;
00859       act.len = 0;
00860       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00861    }
00862    
00863    return 0;
00864 }
00865 
00866 #if 0
00867 static int misdn_lib_get_l2_te_ptp_up(struct misdn_stack *stack)
00868 {
00869    iframe_t act;
00870       
00871    act.prim = DL_ESTABLISH | REQUEST;
00872    act.addr = (stack->upper_id  & ~LAYER_ID_MASK) | 3 | FLG_MSG_DOWN;
00873       
00874    act.dinfo = 0;
00875    act.len = 0;
00876    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00877    return 0;
00878 }
00879 #endif
00880 
00881 static int misdn_lib_get_short_status(struct misdn_stack *stack)
00882 {
00883    iframe_t act;
00884    
00885    
00886    act.prim = MGR_SHORTSTATUS | REQUEST; 
00887    
00888    act.addr = (stack->upper_id | MSG_BROADCAST)  ;
00889 
00890    act.dinfo = SSTATUS_BROADCAST_BIT | SSTATUS_ALL;
00891    
00892    act.len = 0;
00893    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00894 }
00895 
00896 
00897 
00898 static int create_process(int midev, struct misdn_bchannel *bc)
00899 {
00900    iframe_t ncr;
00901    int l3_id;
00902    int proc_id;
00903    struct misdn_stack *stack;
00904 
00905    stack = get_stack_by_bc(bc);
00906    if (stack->nt) {
00907       if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, 0) < 0) {
00908          return -1;
00909       }
00910       cb_log(4, stack->port, " -->  found channel: %d\n", bc->channel);
00911 
00912       for (proc_id = 0; proc_id < MAXPROCS; ++proc_id) {
00913          if (stack->procids[proc_id] == 0) {
00914             break;
00915          }
00916       }  /* end for */
00917       if (proc_id == MAXPROCS) {
00918          cb_log(0, stack->port, "Couldnt Create New ProcId.\n");
00919          return -1;
00920       }
00921 
00922       stack->procids[proc_id] = 1;
00923 
00924       l3_id = 0xff00 | proc_id;
00925       bc->l3_id = l3_id;
00926       cb_log(3, stack->port, " --> new_l3id %x\n", l3_id);
00927    } else {
00928       if ((stack->pri && stack->ptp) || bc->te_choose_channel) {
00929          /* we know exactly which channels are in use */
00930          if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, bc->dec) < 0) {
00931             return -1;
00932          }
00933          cb_log(2, stack->port, " -->  found channel: %d\n", bc->channel);
00934       } else {
00935          /* other phones could have made a call also on this port (ptmp) */
00936          bc->channel = 0xff;
00937       }
00938 
00939       /* if we are in te-mode, we need to create a process first */
00940       if (++new_te_id > 0xffff) {
00941          new_te_id = 0x0001;
00942       }
00943 
00944       l3_id = (entity << 16) | new_te_id;
00945       bc->l3_id = l3_id;
00946       cb_log(3, stack->port, "--> new_l3id %x\n", l3_id);
00947 
00948       /* send message */
00949       ncr.prim = CC_NEW_CR | REQUEST;
00950       ncr.addr = (stack->upper_id | FLG_MSG_DOWN);
00951       ncr.dinfo = l3_id;
00952       ncr.len = 0;
00953       mISDN_write(midev, &ncr, mISDN_HEADER_LEN + ncr.len, TIMEOUT_1SEC);
00954    }
00955 
00956    return l3_id;
00957 }
00958 
00959 
00960 void misdn_lib_setup_bc(struct misdn_bchannel *bc)
00961 {
00962    clean_up_bc(bc);
00963    setup_bc(bc);
00964 }
00965 
00966 
00967 int setup_bc(struct misdn_bchannel *bc)
00968 {
00969    unsigned char buff[1025];
00970    int midev, channel, b_stid, i;
00971    mISDN_pid_t pid;
00972    int ret;
00973 
00974    struct misdn_stack *stack=get_stack_by_bc(bc);
00975 
00976    if (!stack) {
00977       cb_log(0, bc->port, "setup_bc: NO STACK FOUND!!\n");
00978       return -1;
00979    }
00980    
00981    midev = stack->midev;
00982    channel = bc->channel - 1 - (bc->channel > 16);
00983    b_stid = stack->b_stids[channel >= 0 ? channel : 0];
00984 
00985    switch (bc->bc_state) {
00986       case BCHAN_CLEANED:
00987          break;
00988       default:
00989          cb_log(4, stack->port, "$$$ bc already upsetted stid :%x (state:%s)\n", b_stid, bc_state2str(bc->bc_state) );
00990          return -1;
00991    }
00992    
00993    cb_log(5, stack->port, "$$$ Setting up bc with stid :%x\n", b_stid);
00994    
00995    /*check if the b_stid is alread initialized*/
00996    for (i=0; i <= stack->b_num; i++) {
00997       if (stack->bc[i].b_stid == b_stid) {
00998          cb_log(0, bc->port, "setup_bc: b_stid:%x already in use !!!\n", b_stid);
00999          return -1;
01000       }
01001    }
01002    
01003    if (b_stid <= 0) {
01004       cb_log(0, stack->port," -- Stid <=0 at the moment in channel:%d\n",channel);
01005       
01006       bc_state_change(bc,BCHAN_ERROR);
01007       return 1;
01008    }
01009 
01010    bc->b_stid = b_stid;
01011 
01012    {
01013       layer_info_t li;
01014       memset(&li, 0, sizeof(li));
01015     
01016       li.object_id = -1;
01017       li.extentions = 0;
01018       
01019       li.st = bc->b_stid; /*  given idx */
01020 
01021 
01022 #define MISDN_DSP
01023 #ifndef MISDN_DSP
01024       bc->nodsp=1;
01025 #endif
01026       if ( bc->hdlc || bc->nodsp) {
01027          cb_log(4, stack->port,"setup_bc: without dsp\n");
01028          { 
01029             int l = sizeof(li.name);
01030             strncpy(li.name, "B L3", l);
01031             li.name[l-1] = 0;
01032          }
01033          li.pid.layermask = ISDN_LAYER((3));
01034          li.pid.protocol[3] = ISDN_PID_L3_B_USER;
01035          
01036          bc->layer=3;
01037       } else {
01038          cb_log(4, stack->port,"setup_bc: with dsp\n");
01039          { 
01040             int l = sizeof(li.name);
01041             strncpy(li.name, "B L4", l);
01042             li.name[l-1] = 0;
01043          }
01044          li.pid.layermask = ISDN_LAYER((4));
01045          li.pid.protocol[4] = ISDN_PID_L4_B_USER
01046 ;
01047          bc->layer=4;
01048          
01049       }  
01050       
01051       ret = mISDN_new_layer(midev, &li);
01052       if (ret ) {
01053          cb_log(0, stack->port,"New Layer Err: %d %s\n",ret,strerror(errno));
01054 
01055          bc_state_change(bc,BCHAN_ERROR);
01056          return(-EINVAL);
01057       }
01058       
01059       bc->layer_id = li.id;
01060    }
01061    
01062    memset(&pid, 0, sizeof(pid));
01063    
01064    
01065    
01066    cb_log(4, stack->port," --> Channel is %d\n", bc->channel);
01067    
01068    if (bc->nodsp) {
01069       cb_log(2, stack->port," --> TRANSPARENT Mode (no DSP, no HDLC)\n");
01070       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01071       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01072       pid.protocol[3] = ISDN_PID_L3_B_USER;
01073       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3));
01074       
01075    } else if ( bc->hdlc ) {
01076       cb_log(2, stack->port," --> HDLC Mode\n");
01077       pid.protocol[1] = ISDN_PID_L1_B_64HDLC ;
01078       pid.protocol[2] = ISDN_PID_L2_B_TRANS  ;
01079       pid.protocol[3] = ISDN_PID_L3_B_USER;
01080       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) ;
01081    } else {
01082       cb_log(2, stack->port," --> TRANSPARENT Mode\n");
01083       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01084       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01085       pid.protocol[3] = ISDN_PID_L3_B_DSP;
01086       pid.protocol[4] = ISDN_PID_L4_B_USER;
01087       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) | ISDN_LAYER((4));
01088       
01089    } 
01090 
01091    ret = mISDN_set_stack(midev, bc->b_stid, &pid);
01092 
01093    if (ret){
01094       cb_log(0, stack->port,"$$$ Set Stack Err: %d %s\n",ret,strerror(errno));
01095       
01096       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01097       
01098       bc_state_change(bc,BCHAN_ERROR);
01099       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01100       return(-EINVAL);
01101    }
01102 
01103    ret = mISDN_get_setstack_ind(midev, bc->layer_id);
01104 
01105    if (ret) {
01106       cb_log(0, stack->port,"$$$ Set StackIND Err: %d %s\n",ret,strerror(errno));
01107       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01108       
01109       bc_state_change(bc,BCHAN_ERROR);
01110       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01111       return(-EINVAL);
01112    }
01113 
01114    ret = mISDN_get_layerid(midev, bc->b_stid, bc->layer) ;
01115 
01116    bc->addr = ret>0? ret : 0;
01117 
01118    if (!bc->addr) {
01119       cb_log(0, stack->port,"$$$ Get Layerid Err: %d %s\n",ret,strerror(errno));
01120       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01121       
01122       bc_state_change(bc,BCHAN_ERROR);
01123       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01124       return (-EINVAL);
01125    }
01126 
01127    manager_bchannel_activate(bc);
01128    
01129    bc_state_change(bc,BCHAN_ACTIVATED);
01130 
01131    return 0;
01132 }
01133 
01134 
01135 
01136 /** IFACE **/
01137 int init_bc(struct misdn_stack *stack,  struct misdn_bchannel *bc, int midev, int port, int bidx,  char *msn, int firsttime)
01138 {
01139    unsigned char buff[1025] = "";
01140    iframe_t *frm = (iframe_t *)buff;
01141    int ret;
01142   
01143    if (!bc) return -1;
01144   
01145    cb_log(8, port, "Init.BC %d.\n",bidx);
01146    
01147    memset(bc, 0,sizeof(struct misdn_bchannel));
01148 
01149    bc->send_lock=malloc(sizeof(struct send_lock));
01150 
01151    pthread_mutex_init(&bc->send_lock->lock, NULL);
01152    
01153    if (msn) {
01154       int l = sizeof(bc->msn);
01155       strncpy(bc->msn,msn, l);
01156       bc->msn[l-1] = 0;
01157    }
01158    
01159    
01160    empty_bc(bc);
01161    bc_state_change(bc, BCHAN_CLEANED);
01162    
01163    bc->port=stack->port;
01164    bc->nt=stack->nt?1:0;
01165    bc->pri=stack->pri;
01166    
01167    {
01168       ibuffer_t* ibuf= init_ibuffer(MISDN_IBUF_SIZE);
01169 
01170       if (!ibuf) return -1;
01171       
01172       clear_ibuffer( ibuf);
01173       
01174       ibuf->rsem=malloc(sizeof(sem_t));
01175       
01176       bc->astbuf=ibuf;
01177 
01178       if (sem_init(ibuf->rsem,1,0)<0)
01179          sem_init(ibuf->rsem,0,0);
01180       
01181    }
01182    
01183    {
01184       stack_info_t *stinf;
01185       ret = mISDN_get_stack_info(midev, stack->port, buff, sizeof(buff));
01186       if (ret < 0) {
01187          cb_log(0, port, "%s: Cannot get stack info for this port. (ret=%d)\n", __FUNCTION__, ret);
01188          return -1;
01189       }
01190     
01191       stinf = (stack_info_t *)&frm->data.p;
01192     
01193       cb_log(8, port, " --> Child %x\n",stinf->child[bidx]);
01194    }
01195   
01196    return 0;
01197 }
01198 
01199 
01200 
01201 struct misdn_stack* stack_init( int midev, int port, int ptp )
01202 {
01203    int ret;
01204    unsigned char buff[1025];
01205    iframe_t *frm = (iframe_t *)buff;
01206    stack_info_t *stinf;
01207    int i; 
01208    layer_info_t li;
01209 
01210    struct misdn_stack *stack = malloc(sizeof(struct misdn_stack));
01211    if (!stack ) return NULL;
01212 
01213 
01214    cb_log(8, port, "Init. Stack.\n");
01215   
01216    memset(stack,0,sizeof(struct misdn_stack));
01217   
01218    for (i=0; i<MAX_BCHANS + 1; i++ ) stack->channels[i]=0;
01219    
01220    stack->port=port;
01221    stack->midev=midev;
01222    stack->ptp=ptp;
01223   
01224    stack->holding=NULL;
01225    stack->pri=0;
01226   
01227    msg_queue_init(&stack->downqueue);
01228    msg_queue_init(&stack->upqueue);
01229   
01230    /* query port's requirements */
01231    ret = mISDN_get_stack_info(midev, 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(NULL);
01235    }
01236   
01237    stinf = (stack_info_t *)&frm->data.p;
01238 
01239    stack->d_stid = stinf->id;
01240    stack->b_num = stinf->childcnt;
01241 
01242    for (i=0; i<=stinf->childcnt; i++)
01243       stack->b_stids[i] = stinf->child[i];
01244   
01245    switch(stinf->pid.protocol[0] & ~ISDN_PID_FEATURE_MASK) {
01246    case ISDN_PID_L0_TE_S0:
01247       stack->nt=0;
01248       break;
01249    case ISDN_PID_L0_NT_S0:
01250       cb_log(8, port, "NT Stack\n");
01251 
01252       stack->nt=1;
01253       break;
01254    case ISDN_PID_L0_TE_E1:
01255       cb_log(8, port, "TE S2M Stack\n");
01256       stack->nt=0;
01257       stack->pri=1;
01258       break;
01259    case ISDN_PID_L0_NT_E1:
01260       cb_log(8, port, "TE S2M Stack\n");
01261       stack->nt=1;
01262       stack->pri=1;
01263       
01264       break;
01265    default:
01266       cb_log(0, port, "this is a unknown port type 0x%08x\n", stinf->pid.protocol[0]);
01267 
01268    }
01269 
01270    if (!stack->nt) {
01271       if (stinf->pid.protocol[2] & ISDN_PID_L2_DF_PTP ) { 
01272          stack->ptp = 1;
01273       } else {
01274          stack->ptp = 0;
01275       }
01276    }
01277    
01278    {
01279       int ret;
01280       int nt=stack->nt;
01281 
01282       cb_log(8, port, "Init. Stack.\n");
01283       
01284       memset(&li, 0, sizeof(li));
01285       {
01286          int l = sizeof(li.name);
01287          strncpy(li.name,nt?"net l2":"user l4", l);
01288          li.name[l-1] = 0;
01289       }
01290       li.object_id = -1;
01291       li.extentions = 0;
01292       li.pid.protocol[nt?2:4] = nt?ISDN_PID_L2_LAPD_NET:ISDN_PID_L4_CAPI20;
01293       li.pid.layermask = ISDN_LAYER((nt?2:4));
01294       li.st = stack->d_stid;
01295       
01296       
01297       ret = mISDN_new_layer(midev, &li);
01298       if (ret) {
01299          cb_log(0, port, "%s: Cannot add layer %d to this port.\n", __FUNCTION__, nt?2:4);
01300          return(NULL);
01301       }
01302       
01303       
01304       stack->upper_id = li.id;
01305       ret = mISDN_register_layer(midev, stack->d_stid, stack->upper_id);
01306       if (ret)
01307       {
01308          cb_log(0,port,"Cannot register layer %d of this port.\n", nt?2:4);
01309          return(NULL);
01310       }
01311       
01312       stack->lower_id = mISDN_get_layerid(midev, stack->d_stid, nt?1:3); 
01313       if (stack->lower_id < 0) {
01314          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, nt?1:3);
01315          return(NULL);
01316       }
01317       
01318       stack->upper_id = mISDN_get_layerid(midev, stack->d_stid, nt?2:4);
01319       if (stack->upper_id < 0) {
01320          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, 2);
01321          return(NULL);
01322       }
01323       
01324       cb_log(8, port, "NT Stacks upper_id %x\n",stack->upper_id);
01325       
01326       
01327       /* create nst (nt-mode only) */
01328       if (nt) {
01329          
01330          memset(&stack->nst, 0, sizeof(net_stack_t));
01331          memset(&stack->mgr, 0, sizeof(manager_t));
01332     
01333          stack->mgr.nst = &stack->nst;
01334          stack->nst.manager = &stack->mgr;
01335     
01336          stack->nst.l3_manager = handle_event_nt;
01337          stack->nst.device = midev;
01338          stack->nst.cardnr = port;
01339          stack->nst.d_stid = stack->d_stid;
01340     
01341          stack->nst.feature = FEATURE_NET_HOLD;
01342          if (stack->ptp)
01343             stack->nst.feature |= FEATURE_NET_PTP;
01344          if (stack->pri)
01345             stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
01346          
01347          stack->nst.l1_id = stack->lower_id;
01348          stack->nst.l2_id = stack->upper_id;
01349          
01350          msg_queue_init(&stack->nst.down_queue);
01351          
01352          Isdnl2Init(&stack->nst);
01353          Isdnl3Init(&stack->nst);
01354          
01355       } 
01356       
01357       if (!stack->nt) {
01358          /*assume L1 is up, we'll get DEACTIVATES soon, for non
01359           * up L1s*/
01360          stack->l1link=0;
01361       }
01362       stack->l1link=0;
01363       stack->l2link=0;
01364 #if 0 
01365       if (!stack->nt) {
01366          misdn_lib_get_short_status(stack);
01367       } else {
01368          misdn_lib_get_l1_up(stack);
01369          if (!stack->ptp) misdn_lib_get_l1_up(stack);
01370          misdn_lib_get_l2_up(stack);
01371       }
01372 #endif
01373 
01374       misdn_lib_get_short_status(stack);
01375       misdn_lib_get_l1_up(stack);
01376       misdn_lib_get_l2_up(stack); 
01377       
01378    }
01379 
01380    cb_log(8,0,"stack_init: port:%d lowerId:%x  upperId:%x\n",stack->port,stack->lower_id, stack->upper_id);
01381    
01382    return stack;
01383 }
01384 
01385 
01386 void stack_destroy(struct misdn_stack* stack)
01387 {
01388    char buf[1024];
01389    if (!stack) return;
01390 
01391    if (stack->nt) {
01392       cleanup_Isdnl2(&stack->nst);
01393       cleanup_Isdnl3(&stack->nst);
01394    }
01395   
01396    if (stack->lower_id) 
01397       mISDN_write_frame(stack->midev, buf, stack->lower_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01398 
01399    if (stack->upper_id) 
01400       mISDN_write_frame(stack->midev, buf, stack->upper_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01401 }
01402 
01403 
01404 static struct misdn_stack * find_stack_by_addr(int  addr)
01405 {
01406    struct misdn_stack *stack;
01407    
01408    for (stack=glob_mgr->stack_list;
01409         stack;
01410         stack=stack->next) {
01411       if ( (stack->upper_id&STACK_ID_MASK) == (addr&STACK_ID_MASK)) return stack;
01412 
01413    }
01414   
01415    return NULL;
01416 }
01417 
01418 
01419 static struct misdn_stack * find_stack_by_port(int port)
01420 {
01421    struct misdn_stack *stack;
01422   
01423    for (stack=glob_mgr->stack_list;
01424         stack;
01425         stack=stack->next) 
01426       if (stack->port == port) return stack;
01427   
01428    return NULL;
01429 }
01430 
01431 static struct misdn_stack * find_stack_by_mgr(manager_t* mgr_nt)
01432 {
01433    struct misdn_stack *stack;
01434   
01435    for (stack=glob_mgr->stack_list;
01436         stack;
01437         stack=stack->next) 
01438       if ( &stack->mgr == mgr_nt) return stack;
01439   
01440    return NULL;
01441 }
01442 
01443 static struct misdn_bchannel *find_bc_by_masked_l3id(struct misdn_stack *stack, unsigned long l3id, unsigned long mask)
01444 {
01445    int i;
01446    for (i=0; i<=stack->b_num; i++) {
01447       if ( (stack->bc[i].l3_id & mask)  ==  (l3id & mask)) return &stack->bc[i] ;
01448    }
01449    return stack_holder_find(stack,l3id);
01450 }
01451 
01452 
01453 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id)
01454 {
01455    int i;
01456    for (i=0; i<=stack->b_num; i++) {
01457       if (stack->bc[i].l3_id == l3id) return &stack->bc[i] ;
01458    }
01459    return stack_holder_find(stack,l3id);
01460 }
01461 
01462 static struct misdn_bchannel *find_bc_holded(struct misdn_stack *stack)
01463 {
01464    int i;
01465    for (i=0; i<=stack->b_num; i++) {
01466       if (stack->bc[i].holded ) return &stack->bc[i] ;
01467    }
01468    return NULL;
01469 }
01470 
01471 
01472 static struct misdn_bchannel *find_bc_by_addr(unsigned long addr)
01473 {
01474    struct misdn_stack* stack;
01475    int i;
01476 
01477    for (stack=glob_mgr->stack_list;
01478         stack;
01479         stack=stack->next) {
01480       for (i=0; i<=stack->b_num; i++) {
01481          if ( (stack->bc[i].addr&STACK_ID_MASK)==(addr&STACK_ID_MASK) ||  stack->bc[i].layer_id== addr ) {
01482             return &stack->bc[i];
01483          }
01484       }
01485    }
01486    
01487    return NULL;
01488 }
01489 
01490 struct misdn_bchannel *find_bc_by_confid(unsigned long confid)
01491 {
01492    struct misdn_stack* stack;
01493    int i;
01494    
01495    for (stack=glob_mgr->stack_list;
01496         stack;
01497         stack=stack->next) {
01498       for (i=0; i<=stack->b_num; i++) {
01499          if ( stack->bc[i].conf_id==confid ) {
01500             return &stack->bc[i];
01501          }
01502       }
01503    }
01504    return NULL;
01505 }
01506 
01507 
01508 static struct misdn_bchannel *find_bc_by_channel(int port, int channel)
01509 {
01510    struct misdn_stack* stack=find_stack_by_port(port);
01511    int i;
01512 
01513    if (!stack) return NULL;   
01514    
01515    for (i=0; i<=stack->b_num; i++) {
01516       if ( stack->bc[i].channel== channel ) {
01517          return &stack->bc[i];
01518       }
01519    }
01520       
01521    return NULL;
01522 }
01523 
01524 
01525 
01526 
01527 
01528 static int handle_event ( struct misdn_bchannel *bc, enum event_e event, iframe_t *frm)
01529 {
01530    struct misdn_stack *stack=get_stack_by_bc(bc);
01531    
01532    if (!stack->nt) {
01533       
01534       switch (event) {
01535 
01536       case EVENT_CONNECT_ACKNOWLEDGE:
01537          setup_bc(bc);
01538 
01539          if ( *bc->crypt_key ) {
01540             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);
01541             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01542          }
01543 
01544          if (misdn_cap_is_speech(bc->capability)) {
01545             if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
01546             manager_ec_enable(bc);
01547 
01548             if ( bc->txgain != 0 ) {
01549                cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
01550                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
01551             }
01552             if ( bc->rxgain != 0 ) {
01553                cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
01554                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
01555             }
01556          }
01557 
01558          break;
01559       case EVENT_CONNECT:
01560 
01561          if ( *bc->crypt_key ) {
01562             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);
01563             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01564          }
01565       case EVENT_ALERTING:
01566       case EVENT_PROGRESS:
01567       case EVENT_PROCEEDING:
01568       case EVENT_SETUP_ACKNOWLEDGE:
01569       case EVENT_SETUP:
01570       {
01571          if (bc->channel == 0xff || bc->channel<=0)
01572             bc->channel=0;
01573 
01574          if (find_free_chan_in_stack(stack, bc, bc->channel, 0)<0){
01575             if (!stack->pri && !stack->ptp)  {
01576                bc->cw=1;
01577                break;
01578             }
01579 
01580             if (!bc->channel)
01581                cb_log(0, stack->port, "Any Channel Requested, but we have no more!!\n");
01582             else 
01583                cb_log(0, stack->port, "Requested Channel Already in Use releasing this call with cause 34!!!!\n");
01584 
01585             /* when the channel is already in use, we can't
01586              * simply clear it, we need to make sure that 
01587              * it will still be marked as in_use in the 
01588              * available channels list.*/
01589             bc->channel=0;
01590 
01591             misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
01592             return -1;
01593          }
01594       }
01595 
01596       setup_bc(bc);
01597       break;
01598 
01599       case EVENT_RELEASE_COMPLETE:
01600       case EVENT_RELEASE:
01601          break;
01602       default:
01603          break;
01604       }
01605    } else {    /** NT MODE **/
01606       
01607    }
01608    return 0;
01609 }
01610 
01611 static int handle_cr ( struct misdn_stack *stack, iframe_t *frm)
01612 {
01613    struct misdn_bchannel *bc;
01614 
01615    if (!stack) return -1;
01616   
01617    switch (frm->prim) {
01618    case CC_NEW_CR|INDICATION:
01619       cb_log(7, stack->port, " --> lib: NEW_CR Ind with l3id:%x on this port.\n",frm->dinfo);
01620 
01621       bc = misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01622       if (!bc) {
01623          cb_log(0, stack->port, " --> !! lib: No free channel!\n");
01624          return -1;
01625       }
01626   
01627       cb_log(7, stack->port, " --> new_process: New L3Id: %x\n",frm->dinfo);
01628       bc->l3_id=frm->dinfo;
01629       return 1;
01630    case CC_NEW_CR|CONFIRM:
01631       return 1;
01632    case CC_NEW_CR|REQUEST:
01633       return 1;
01634    case CC_RELEASE_CR|REQUEST:
01635       return 1;
01636    case CC_RELEASE_CR|CONFIRM:
01637       break;
01638    case CC_RELEASE_CR|INDICATION:
01639       cb_log(4, stack->port, " --> lib: RELEASE_CR Ind with l3id:%x\n",frm->dinfo);
01640       {
01641          struct misdn_bchannel *bc=find_bc_by_l3id(stack, frm->dinfo);
01642          struct misdn_bchannel dummybc;
01643       
01644          if (!bc) {
01645             cb_log(4, stack->port, " --> Didn't found BC so temporarly creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
01646             misdn_make_dummy(&dummybc, stack->port, frm->dinfo, stack->nt, 0);
01647             
01648             bc=&dummybc; 
01649          }
01650       
01651          if (bc) {
01652             int channel = bc->channel;
01653             cb_log(4, stack->port, " --> lib: CLEANING UP l3id: %x\n",frm->dinfo);
01654 
01655             /*bc->pid = 0;*/
01656             bc->need_disconnect=0;
01657             bc->need_release=0;
01658             bc->need_release_complete=0;
01659 
01660             cb_event(EVENT_CLEANUP, bc, glob_mgr->user_data);
01661 
01662             empty_bc(bc);
01663             clean_up_bc(bc);
01664 
01665             if (channel>0)
01666                empty_chan_in_stack(stack,channel);
01667             bc->in_use=0;
01668 
01669             dump_chan_list(stack);
01670 
01671             if (bc->stack_holder) {
01672                cb_log(4,stack->port, "REMOVEING Holder\n");
01673                stack_holder_remove( stack, bc);
01674                free(bc);
01675             }
01676          }
01677          else {
01678             if (stack->nt) 
01679                cb_log(4, stack->port, "BC with dinfo: %x  not found.. (prim was %x and addr %x)\n",frm->dinfo, frm->prim, frm->addr);
01680          }
01681       
01682          return 1;
01683       }
01684       break;
01685    }
01686   
01687    return 0;
01688 }
01689 
01690 
01691 /*Emptys bc if it's reserved (no SETUP out yet)*/
01692 void misdn_lib_release(struct misdn_bchannel *bc)
01693 {
01694    struct misdn_stack *stack=get_stack_by_bc(bc);
01695 
01696    if (!stack) {
01697       cb_log(1,0,"misdn_release: No Stack found\n");
01698       return;
01699    }
01700    
01701    if (bc->channel>0) 
01702       empty_chan_in_stack(stack,bc->channel);
01703    
01704    empty_bc(bc);
01705    clean_up_bc(bc);
01706    bc->in_use=0;
01707 }
01708 
01709 
01710 
01711 
01712 int misdn_lib_get_port_up (int port) 
01713 { /* Pull Up L1 */ 
01714    struct misdn_stack *stack;
01715    
01716    for (stack=glob_mgr->stack_list;
01717         stack;
01718         stack=stack->next) {
01719       
01720       if (stack->port == port) {
01721 
01722          if (!stack->l1link)
01723             misdn_lib_get_l1_up(stack);
01724          if (!stack->l2link)
01725             misdn_lib_get_l2_up(stack);
01726          
01727          return 0;
01728       }
01729    }
01730    return 0;
01731 }
01732 
01733 
01734 int misdn_lib_get_port_down (int port) 
01735 { /* Pull Down L1 */ 
01736    struct misdn_stack *stack;
01737    for (stack=glob_mgr->stack_list;
01738         stack;
01739         stack=stack->next) {
01740       if (stack->port == port) {
01741             if (stack->l2link)
01742                misdn_lib_get_l2_down(stack);
01743             misdn_lib_get_l1_down(stack);
01744          return 0;
01745       }
01746    }
01747    return 0;
01748 }
01749 
01750 int misdn_lib_port_up(int port, int check)
01751 {
01752    struct misdn_stack *stack;
01753 
01754 
01755    for (stack=glob_mgr->stack_list;
01756         stack;
01757         stack=stack->next) {
01758       
01759       if (stack->port == port) {
01760 
01761          if (stack->blocked) {
01762             cb_log(0,port, "Port Blocked:%d L2:%d L1:%d\n", stack->blocked, stack->l2link, stack->l1link);
01763             return -1;
01764          }
01765 
01766          if (stack->ptp ) {
01767 
01768             if (stack->l1link && stack->l2link) {
01769                return 1;
01770             } else {
01771                cb_log(1,port, "Port Down L2:%d L1:%d\n",
01772                   stack->l2link, stack->l1link);
01773                return 0;
01774             }
01775          } else {
01776             if ( !check || stack->l1link )
01777                return 1;
01778             else {
01779                cb_log(1,port, "Port down PMP\n");
01780                return 0;
01781             }
01782          }
01783       }
01784    }
01785   
01786    return -1;
01787 }
01788 
01789 
01790 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh)
01791 {
01792    struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01793    struct misdn_bchannel dummybc;
01794    iframe_t frm; /* fake te frm to remove callref from global callreflist */
01795    frm.dinfo = hh->dinfo;
01796 
01797    frm.addr=stack->upper_id | FLG_MSG_DOWN;
01798 
01799    frm.prim = CC_RELEASE_CR|INDICATION;
01800    cb_log(4, stack->port, " --> CC_RELEASE_CR: Faking Realease_cr for %x l3id:%x\n",frm.addr, frm.dinfo);
01801    /** removing procid **/
01802    if (!bc) {
01803       cb_log(4, stack->port, " --> Didn't found BC so temporarly creating dummy BC (l3id:%x) on this port.\n", hh->dinfo);
01804       misdn_make_dummy(&dummybc, stack->port, hh->dinfo, stack->nt, 0);
01805       bc=&dummybc; 
01806    }
01807 
01808    if (bc) {
01809       if ( (bc->l3_id & 0xff00) == 0xff00) {
01810          cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", bc->l3_id&0xff);
01811          stack->procids[bc->l3_id&0xff] = 0 ;
01812       }
01813    }
01814    else cb_log(0, stack->port, "Couldnt find BC so I couldnt remove the Process!!!! this is a bad port.\n");
01815 
01816    if (handle_cr(stack, &frm)<0) {
01817    }
01818 
01819    return 0 ;
01820 }
01821 
01822 int
01823 handle_event_nt(void *dat, void *arg)
01824 {
01825    manager_t *mgr = (manager_t *)dat;
01826    msg_t *msg = (msg_t *)arg;
01827    mISDNuser_head_t *hh;
01828    int reject=0;
01829 
01830    struct misdn_stack *stack=find_stack_by_mgr(mgr);
01831    int port;
01832 
01833    if (!msg || !mgr)
01834       return(-EINVAL);
01835 
01836    hh=(mISDNuser_head_t*)msg->data;
01837    port=stack->port;
01838    
01839    cb_log(5, stack->port, " --> lib: prim %x dinfo %x\n",hh->prim, hh->dinfo);
01840    {
01841       switch(hh->prim){
01842       case CC_RETRIEVE|INDICATION:
01843       {
01844          struct misdn_bchannel *bc, *hold_bc;
01845 
01846          iframe_t frm; /* fake te frm to add callref to global callreflist */
01847          frm.dinfo = hh->dinfo;
01848 
01849          frm.addr=stack->upper_id | FLG_MSG_DOWN;
01850 
01851          frm.prim = CC_NEW_CR|INDICATION;
01852          
01853          if (handle_cr( stack, &frm)< 0) {
01854             msg_t *dmsg;
01855             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01856             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01857             stack->nst.manager_l3(&stack->nst, dmsg);
01858             free_msg(msg);
01859             return 0;
01860          }
01861          
01862          bc = find_bc_by_l3id(stack, hh->dinfo);
01863          hold_bc = stack_holder_find(stack, bc->l3_id);
01864          cb_log(4, stack->port, "bc_l3id:%x holded_bc_l3id:%x\n",bc->l3_id, hold_bc->l3_id);
01865 
01866          if (hold_bc) {
01867             cb_log(4, stack->port, "REMOVEING Holder\n");
01868 
01869             /*swap the backup to our new channel back*/
01870             stack_holder_remove(stack, hold_bc);
01871             memcpy(bc, hold_bc, sizeof(*bc));
01872             free(hold_bc);
01873 
01874             bc->holded=0;
01875             bc->b_stid=0;
01876          }
01877          
01878       }
01879          
01880          break;
01881          
01882       case CC_SETUP|CONFIRM:
01883       {
01884          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01885          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
01886          cb_log(4, stack->port, " --> lib: Event_ind:SETUP CONFIRM [NT] : new L3ID  is %x\n",l3id );
01887    
01888          if (!bc) { cb_log(4, stack->port, "Bc Not found (after SETUP CONFIRM)\n"); return 0; }
01889          cb_log (2,bc->port,"I IND :CC_SETUP|CONFIRM: old l3id:%x new l3id:%x\n", bc->l3_id, l3id);
01890          bc->l3_id=l3id;
01891          cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
01892       }
01893       free_msg(msg);
01894       return 0;
01895       
01896       case CC_SETUP|INDICATION:
01897       {
01898          struct misdn_bchannel* bc=misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01899          if (!bc) 
01900          ERR_NO_CHANNEL:
01901          {
01902             msg_t *dmsg;
01903             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01904             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01905             stack->nst.manager_l3(&stack->nst, dmsg);
01906             free_msg(msg);
01907             return 0;
01908          }
01909   
01910          cb_log(4, stack->port, " --> new_process: New L3Id: %x\n",hh->dinfo);
01911          bc->l3_id=hh->dinfo;
01912       }
01913       break;
01914 
01915       case CC_CONNECT_ACKNOWLEDGE|INDICATION:
01916       break;
01917       
01918       case CC_ALERTING|INDICATION:
01919       case CC_PROCEEDING|INDICATION:
01920       case CC_SETUP_ACKNOWLEDGE|INDICATION:
01921          if(!stack->ptp) break;  
01922       case CC_CONNECT|INDICATION:
01923       break;
01924       case CC_DISCONNECT|INDICATION:
01925       {
01926          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01927          if (!bc) {
01928             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
01929             if (bc) { 
01930                int myprocid=bc->l3_id&0x0000ffff;
01931                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
01932                cb_log(3,stack->port,"Reject dinfo: %x cause:%d\n",hh->dinfo,bc->cause);
01933                reject=1;      
01934             }
01935          }
01936       }
01937       break;
01938       
01939       case CC_FACILITY|INDICATION:
01940       {
01941          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01942          if (!bc) {
01943             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
01944             if (bc) { 
01945                int myprocid=bc->l3_id&0x0000ffff;
01946                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
01947                cb_log(4,bc->port,"Repaired reject Bug, new dinfo: %x\n",hh->dinfo);
01948             }
01949          }
01950       }
01951       break;
01952       
01953       case CC_RELEASE_COMPLETE|INDICATION:
01954          break;
01955 
01956       case CC_SUSPEND|INDICATION:
01957       {
01958          msg_t *dmsg;
01959          cb_log(4, stack->port, " --> Got Suspend, sending Reject for now\n");
01960          dmsg = create_l3msg(CC_SUSPEND_REJECT | REQUEST,MT_SUSPEND_REJECT, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01961          stack->nst.manager_l3(&stack->nst, dmsg);
01962          free_msg(msg);
01963          return 0;
01964       }
01965       break;
01966       case CC_RESUME|INDICATION:
01967          break;
01968 
01969       case CC_RELEASE|CONFIRM:
01970          {
01971             struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01972 
01973             if (bc) { 
01974                cb_log(1, stack->port, "CC_RELEASE|CONFIRM (l3id:%x), sending RELEASE_COMPLETE\n", hh->dinfo);
01975                misdn_lib_send_event(bc, EVENT_RELEASE_COMPLETE);
01976             }
01977          }
01978          break;
01979          
01980       case CC_RELEASE|INDICATION:
01981          break;
01982 
01983       case CC_RELEASE_CR|INDICATION:
01984          release_cr(stack, hh);
01985          free_msg(msg);
01986          return 0 ;
01987       break;
01988       
01989       case CC_NEW_CR|INDICATION:
01990          /*  Got New CR for bchan, for now I handle this one in */
01991          /*  connect_ack, Need to be changed */
01992       {
01993          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01994          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
01995          if (!bc) { cb_log(0, stack->port, " --> In NEW_CR: didn't found bc ??\n"); return -1;};
01996          if (((l3id&0xff00)!=0xff00) && ((bc->l3_id&0xff00)==0xff00)) {
01997             cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", 0xff&bc->l3_id);
01998             stack->procids[bc->l3_id&0xff] = 0 ;
01999          }
02000          cb_log(4, stack->port, "lib: Event_ind:CC_NEW_CR : very new L3ID  is %x\n",l3id );
02001    
02002          bc->l3_id =l3id;
02003          cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
02004    
02005          free_msg(msg);
02006          return 0;
02007       }
02008       
02009       case DL_ESTABLISH | INDICATION:
02010       case DL_ESTABLISH | CONFIRM:
02011       {
02012          cb_log(3, stack->port, "%% GOT L2 Activate Info.\n");
02013          
02014          if (stack->ptp && stack->l2link) {
02015             cb_log(0, stack->port, "%% GOT L2 Activate Info. but we're activated already.. this l2 is faulty, blocking port\n");
02016             cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02017          }
02018 
02019          if (stack->ptp && !stack->restart_sent) {
02020             /* make sure we restart the interface of the 
02021              * other side */
02022             stack->restart_sent=1;
02023             misdn_lib_send_restart(stack->port, -1);
02024 
02025          }
02026       
02027          /* when we get the L2 UP, the L1 is UP definitely too*/
02028          stack->l2link = 1;
02029          stack->l2upcnt=0;
02030          
02031          free_msg(msg);
02032          return 0;
02033       }
02034       break;
02035 
02036 
02037       case DL_RELEASE | INDICATION:
02038       case DL_RELEASE | CONFIRM:
02039       {
02040          if (stack->ptp) {
02041             cb_log(3 , stack->port, "%% GOT L2 DeActivate Info.\n");
02042 
02043             if (stack->l2upcnt>3) {
02044                cb_log(0 , stack->port, "!!! Could not Get the L2 up after 3 Attemps!!!\n");
02045             }  else {
02046 #if 0
02047                if (stack->nt) misdn_lib_reinit_nt_stack(stack->port);
02048 #endif
02049                if (stack->l1link) {
02050                   misdn_lib_get_l2_up(stack);
02051                   stack->l2upcnt++;
02052                }
02053             }
02054             
02055          } else 
02056             cb_log(3, stack->port, "%% GOT L2 DeActivate Info.\n");
02057          
02058          stack->l2link = 0;
02059          free_msg(msg);
02060          return 0;
02061       }
02062       break;
02063       }
02064    }
02065    
02066    {
02067       /*  Parse Events and fire_up to App. */
02068       struct misdn_bchannel *bc;
02069       struct misdn_bchannel dummybc;
02070       
02071       enum event_e event = isdn_msg_get_event(msgs_g, msg, 1);
02072     
02073       bc=find_bc_by_l3id(stack, hh->dinfo);
02074     
02075       if (!bc) {
02076          cb_log(4, stack->port, " --> Didn't found BC so temporarly creating dummy BC (l3id:%x).\n", hh->dinfo);
02077          misdn_make_dummy(&dummybc, stack->port,  hh->dinfo, stack->nt, 0);
02078          bc=&dummybc; 
02079       }
02080       if (bc ) {
02081          isdn_msg_parse_event(msgs_g,msg,bc, 1);
02082 
02083          switch (event) {
02084             case EVENT_SETUP:
02085                if (bc->channel<=0 || bc->channel==0xff) 
02086                   bc->channel=0;
02087             
02088                if (find_free_chan_in_stack(stack,bc, bc->channel,0)<0) 
02089                   goto ERR_NO_CHANNEL;
02090                break;
02091             case EVENT_RELEASE:
02092             case EVENT_RELEASE_COMPLETE:
02093                {
02094                int channel=bc->channel;
02095                int tmpcause=bc->cause; 
02096                          empty_bc(bc);
02097                bc->cause=tmpcause;
02098                clean_up_bc(bc);
02099 
02100                if (channel>0)
02101                                  empty_chan_in_stack(stack,channel);
02102                bc->in_use=0;
02103                }
02104                break;
02105 
02106             default:
02107             break;
02108          }
02109          
02110          if(!isdn_get_info(msgs_g,event,1)) {
02111             cb_log(4, stack->port, "Unknown Event Ind: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02112          } else {
02113             if (reject) {
02114                switch(bc->cause){
02115                   case 17:
02116                      cb_log(1, stack->port, "Siemens Busy reject..\n");
02117 
02118                      break;
02119                   default:
02120                      break;
02121                }
02122             }
02123             cb_event(event, bc, glob_mgr->user_data);
02124          }
02125       } else {
02126          cb_log(4, stack->port, "No BC found with l3id: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02127       }
02128 
02129       free_msg(msg);
02130    }
02131 
02132 
02133    return 0;
02134 }
02135 
02136 
02137 static int handle_timers(msg_t* msg)
02138 {
02139    iframe_t *frm= (iframe_t*)msg->data;
02140    struct misdn_stack *stack; 
02141   
02142    /* Timer Stuff */
02143    switch (frm->prim) {
02144    case MGR_INITTIMER | CONFIRM:
02145    case MGR_ADDTIMER | CONFIRM:
02146    case MGR_DELTIMER | CONFIRM:
02147    case MGR_REMOVETIMER | CONFIRM:
02148       free_msg(msg);
02149       return(1);
02150    }
02151   
02152   
02153   
02154    if (frm->prim==(MGR_TIMER | INDICATION) ) {
02155       for (stack = glob_mgr->stack_list;
02156            stack;
02157            stack = stack->next) {
02158          itimer_t *it;
02159       
02160          if (!stack->nt) continue;
02161       
02162          it = stack->nst.tlist;
02163          /* find timer */
02164          for(it=stack->nst.tlist;
02165              it;
02166              it=it->next) {
02167             if (it->id == (int)frm->addr)
02168                break;
02169          }
02170          if (it) {
02171             int ret;
02172             ret = mISDN_write_frame(stack->midev, msg->data, frm->addr,
02173                      MGR_TIMER | RESPONSE, 0, 0, NULL, TIMEOUT_1SEC);
02174             test_and_clear_bit(FLG_TIMER_RUNING, (long unsigned int *)&it->Flags);
02175             ret = it->function(it->data);
02176             free_msg(msg);
02177             return 1;
02178          }
02179       }
02180     
02181       cb_log(0, 0, "Timer Msg without Timer ??\n");
02182       free_msg(msg);
02183       return 1;
02184    }
02185   
02186    return 0;
02187 }
02188 
02189 
02190 
02191 void misdn_lib_tone_generator_start(struct misdn_bchannel *bc)
02192 {
02193    bc->generate_tone=1;
02194 }
02195 
02196 void misdn_lib_tone_generator_stop(struct misdn_bchannel *bc)
02197 {
02198    bc->generate_tone=0;
02199 }
02200 
02201 
02202 static int do_tone(struct misdn_bchannel *bc, int len)
02203 {
02204    bc->tone_cnt=len;
02205    
02206    if (bc->generate_tone) {
02207       cb_event(EVENT_TONE_GENERATE, bc, glob_mgr->user_data);
02208       
02209       if ( !bc->nojitter ) {
02210          misdn_tx_jitter(bc,len);
02211       }
02212       
02213       return 1;
02214    }
02215    
02216    return 0;
02217 }
02218 
02219 
02220 #ifdef MISDN_SAVE_DATA
02221 static void misdn_save_data(int id, char *p1, int l1, char *p2, int l2) 
02222 {
02223    char n1[32],n2[32];
02224    FILE *rx, *tx;
02225 
02226    sprintf(n1,"/tmp/misdn-rx-%d.raw",id);
02227    sprintf(n2,"/tmp/misdn-tx-%d.raw",id);
02228 
02229    rx = fopen(n1,"a+"); 
02230    tx = fopen(n2,"a+");
02231 
02232    if (!rx || !tx) {
02233       cb_log(0,0,"Couldn't open files: %s\n",strerror(errno));
02234       return ;
02235    }
02236    
02237    fwrite(p1,1,l1,rx);
02238    fwrite(p2,1,l2,tx);
02239    
02240    fclose(rx);
02241    fclose(tx);
02242 
02243 }
02244 #endif
02245 
02246 void misdn_tx_jitter(struct misdn_bchannel *bc, int len)
02247 {
02248    char buf[4096 + mISDN_HEADER_LEN];
02249    char *data=&buf[mISDN_HEADER_LEN];
02250    iframe_t *txfrm= (iframe_t*)buf;
02251    int jlen, r;
02252    
02253    jlen=cb_jb_empty(bc,data,len);
02254    
02255    if (jlen) {
02256 #ifdef MISDN_SAVE_DATA
02257       misdn_save_data((bc->port*100+bc->channel), data, jlen, bc->bframe, bc->bframe_len);
02258 #endif
02259       flip_buf_bits( data, jlen);
02260       
02261       if (jlen < len) {
02262          cb_log(1, bc->port, "Jitterbuffer Underrun. Got %d of expected %d\n", jlen, len);
02263       }
02264       
02265       txfrm->prim = DL_DATA|REQUEST;
02266       
02267       txfrm->dinfo = 0;
02268       
02269       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02270       
02271       txfrm->len =jlen;
02272       cb_log(9, bc->port, "Transmitting %d samples 2 misdn\n", txfrm->len);
02273 
02274       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02275    } else {
02276 #define MISDN_GEN_SILENCE
02277 #ifdef MISDN_GEN_SILENCE
02278       int cnt=len/TONE_SILENCE_SIZE;
02279       int rest=len%TONE_SILENCE_SIZE;
02280       int i;
02281 
02282       for (i=0; i<cnt; i++) {
02283          memcpy(data, tone_silence_flip, TONE_SILENCE_SIZE );
02284          data +=TONE_SILENCE_SIZE;
02285       }
02286 
02287       if (rest) {
02288          memcpy(data, tone_silence_flip, rest);
02289       }
02290 
02291       txfrm->prim = DL_DATA|REQUEST;
02292 
02293       txfrm->dinfo = 0;
02294 
02295       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02296 
02297       txfrm->len =len;
02298       cb_log(5, bc->port, "Transmitting %d samples of silence to misdn\n", len);
02299 
02300       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02301 #else
02302       r = 0;
02303 #endif
02304    }
02305 
02306    if (r < 0) {
02307       cb_log(1, bc->port, "Error in mISDN_write (%s)\n", strerror(errno));
02308    }
02309 }
02310 
02311 static int handle_bchan(msg_t *msg)
02312 {
02313    iframe_t *frm= (iframe_t*)msg->data;
02314    struct misdn_bchannel *bc=find_bc_by_addr(frm->addr);
02315    struct misdn_stack *stack;
02316    
02317    if (!bc) {
02318       cb_log(1,0,"handle_bchan: BC not found for prim:%x with addr:%x dinfo:%x\n", frm->prim, frm->addr, frm->dinfo);
02319       return 0 ;
02320    }
02321    
02322    stack = get_stack_by_bc(bc);
02323    
02324    if (!stack) {
02325       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);
02326       return 0;
02327    }
02328    
02329    switch (frm->prim) {
02330 
02331    case MGR_SETSTACK| CONFIRM:
02332       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|CONFIRM pid:%d\n",bc->pid);
02333       break;
02334       
02335    case MGR_SETSTACK| INDICATION:
02336       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|IND pid:%d\n",bc->pid);
02337    break;
02338 #if 0
02339    AGAIN:
02340       bc->addr = mISDN_get_layerid(stack->midev, bc->b_stid, bc->layer);
02341       if (!bc->addr) {
02342 
02343          if (errno == EAGAIN) {
02344             usleep(1000);
02345             goto AGAIN;
02346          }
02347          
02348          cb_log(0,stack->port,"$$$ Get Layer (%d) Id Error: %s\n",bc->layer,strerror(errno));
02349          
02350          /* we kill the channel later, when we received some
02351             data. */
02352          bc->addr= frm->addr;
02353       } else if ( bc->addr < 0) {
02354          cb_log(0, stack->port,"$$$ bc->addr <0 Error:%s\n",strerror(errno));
02355          bc->addr=0;
02356       }
02357       
02358       cb_log(4, stack->port," --> Got Adr %x\n", bc->addr);
02359 
02360       free_msg(msg);
02361    
02362       
02363       switch(bc->bc_state) {
02364       case BCHAN_SETUP:
02365          bc_state_change(bc,BCHAN_SETUPED);
02366       break;
02367 
02368       case BCHAN_CLEAN_REQUEST:
02369       default:
02370          cb_log(0, stack->port," --> STATE WASN'T SETUP (but %s) in SETSTACK|IND pid:%d\n",bc_state2str(bc->bc_state), bc->pid);
02371          clean_up_bc(bc);
02372       }
02373       return 1;
02374 #endif
02375 
02376    case MGR_DELLAYER| INDICATION:
02377       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|IND pid:%d\n",bc->pid);
02378       break;
02379       
02380    case MGR_DELLAYER| CONFIRM:
02381       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|CNF pid:%d\n",bc->pid);
02382       
02383       bc->pid=0;
02384       bc->addr=0;
02385       
02386       free_msg(msg);
02387       return 1;
02388       
02389    case PH_ACTIVATE | INDICATION:
02390    case DL_ESTABLISH | INDICATION:
02391       cb_log(3, stack->port, "BCHAN: ACT Ind pid:%d\n", bc->pid);
02392 
02393       free_msg(msg);
02394       return 1;    
02395 
02396    case PH_ACTIVATE | CONFIRM:
02397    case DL_ESTABLISH | CONFIRM:
02398       
02399       cb_log(3, stack->port, "BCHAN: bchan ACT Confirm pid:%d\n",bc->pid);
02400       free_msg(msg);
02401       
02402       return 1;    
02403 
02404    case DL_ESTABLISH | REQUEST:
02405       {
02406          char buf[128];
02407          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_ESTABLISH | CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02408       }
02409       free_msg(msg);
02410       return 1;
02411 
02412    case DL_RELEASE|REQUEST:
02413       {
02414          char buf[128];
02415          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_RELEASE| CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02416       }
02417       free_msg(msg);
02418       return 1;
02419       
02420    case PH_DEACTIVATE | INDICATION:
02421    case DL_RELEASE | INDICATION:
02422       cb_log (3, stack->port, "BCHAN: DeACT Ind pid:%d\n",bc->pid);
02423       
02424       free_msg(msg);
02425       return 1;
02426     
02427    case PH_DEACTIVATE | CONFIRM:
02428    case DL_RELEASE | CONFIRM:
02429       cb_log(3, stack->port, "BCHAN: DeACT Conf pid:%d\n",bc->pid);
02430       
02431       free_msg(msg);
02432       return 1;
02433     
02434    case PH_CONTROL|INDICATION:
02435    {
02436       unsigned int *cont = (unsigned int *) &frm->data.p;
02437       
02438       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);
02439 
02440       if ((*cont & ~DTMF_TONE_MASK) == DTMF_TONE_VAL) {
02441          int dtmf = *cont & DTMF_TONE_MASK;
02442          cb_log(4, stack->port, " --> DTMF TONE: %c\n",dtmf);
02443          bc->dtmf=dtmf;
02444          cb_event(EVENT_DTMF_TONE, bc, glob_mgr->user_data);
02445    
02446          free_msg(msg);
02447          return 1;
02448       }
02449       if (*cont == BF_REJECT) {
02450          cb_log(4, stack->port, " --> BF REJECT\n");
02451          free_msg(msg);
02452          return 1;
02453       }
02454       if (*cont == BF_ACCEPT) {
02455          cb_log(4, stack->port, " --> BF ACCEPT\n");
02456          free_msg(msg);
02457          return 1;
02458       }
02459    }
02460    break;
02461 
02462    case PH_DATA|REQUEST:
02463    case DL_DATA|REQUEST:
02464       cb_log(0, stack->port, "DL_DATA REQUEST \n");
02465       do_tone(bc, 64);
02466       
02467       free_msg(msg);
02468       return 1;
02469    
02470    
02471    case PH_DATA|INDICATION:
02472    case DL_DATA|INDICATION:
02473    {
02474       bc->bframe = (void*)&frm->data.i;
02475       bc->bframe_len = frm->len;
02476 
02477       /** Anyway flip the bufbits **/
02478       if ( misdn_cap_is_speech(bc->capability) ) 
02479          flip_buf_bits(bc->bframe, bc->bframe_len);
02480    
02481 
02482       if (!bc->bframe_len) {
02483          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02484          free_msg(msg);
02485          return 1;
02486       }
02487 
02488       if ( (bc->addr&STACK_ID_MASK) != (frm->addr&STACK_ID_MASK) ) {
02489          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02490          free_msg(msg);
02491          return 1;
02492       }
02493       
02494 #if MISDN_DEBUG
02495       cb_log(0, stack->port, "DL_DATA INDICATION Len %d\n", frm->len);
02496 
02497 #endif
02498       
02499       if ( (bc->bc_state == BCHAN_ACTIVATED) && frm->len > 0) {
02500          int t;
02501 
02502 #ifdef MISDN_B_DEBUG
02503          cb_log(0,bc->port,"do_tone START\n");
02504 #endif
02505          t=do_tone(bc,frm->len);
02506 
02507 #ifdef MISDN_B_DEBUG
02508          cb_log(0,bc->port,"do_tone STOP (%d)\n",t);
02509 #endif
02510          if (  !t ) {
02511             int i;
02512             
02513             if ( misdn_cap_is_speech(bc->capability)) {
02514                if ( !bc->nojitter ) {
02515 #ifdef MISDN_B_DEBUG
02516                   cb_log(0,bc->port,"tx_jitter START\n");
02517 #endif
02518                   misdn_tx_jitter(bc,frm->len);
02519 #ifdef MISDN_B_DEBUG
02520                   cb_log(0,bc->port,"tx_jitter STOP\n");
02521 #endif
02522                }
02523             }
02524 
02525 #ifdef MISDN_B_DEBUG 
02526             cb_log(0,bc->port,"EVENT_B_DATA START\n");
02527 #endif
02528             
02529             i = cb_event(EVENT_BCHAN_DATA, bc, glob_mgr->user_data);
02530 #ifdef MISDN_B_DEBUG 
02531             cb_log(0,bc->port,"EVENT_B_DATA STOP\n");
02532 #endif
02533             
02534             if (i<0) {
02535                cb_log(10,stack->port,"cb_event returned <0\n");
02536                /*clean_up_bc(bc);*/
02537             }
02538          }
02539       }
02540       free_msg(msg);
02541       return 1;
02542    }
02543 
02544 
02545    case PH_CONTROL | CONFIRM:
02546       cb_log(4, stack->port, "PH_CONTROL|CNF bc->addr:%x\n", frm->addr);
02547       free_msg(msg);
02548       return 1;
02549 
02550    case PH_DATA | CONFIRM:
02551    case DL_DATA|CONFIRM:
02552 #if MISDN_DEBUG
02553 
02554       cb_log(0, stack->port, "Data confirmed\n");
02555 
02556 #endif
02557       free_msg(msg);
02558       return 1;
02559    case DL_DATA|RESPONSE:
02560 #if MISDN_DEBUG
02561       cb_log(0, stack->port, "Data response\n");
02562 
02563 #endif
02564       break;
02565    }
02566   
02567    return 0;
02568 }
02569 
02570 
02571 
02572 static int handle_frm_nt(msg_t *msg)
02573 {
02574    iframe_t *frm= (iframe_t*)msg->data;
02575    struct misdn_stack *stack;
02576    int err=0;
02577 
02578    stack=find_stack_by_addr( frm->addr );
02579 
02580    
02581   
02582    if (!stack || !stack->nt) {
02583       return 0;
02584    }
02585 
02586    
02587    if ((err=stack->nst.l1_l2(&stack->nst,msg))) {
02588     
02589       if (nt_err_cnt > 0 ) {
02590          if (nt_err_cnt < 100) {
02591             nt_err_cnt++; 
02592             cb_log(0, stack->port, "NT Stack sends us error: %d \n", err);
02593          } else if (nt_err_cnt < 105){
02594             cb_log(0, stack->port, "NT Stack sends us error: %d over 100 times, so I'll stop this message\n", err);
02595             nt_err_cnt = - 1; 
02596          }
02597       }
02598       free_msg(msg);
02599       return 1;
02600       
02601    }
02602    
02603    return 1;
02604 }
02605 
02606 
02607 static int handle_frm(msg_t *msg)
02608 {
02609    iframe_t *frm = (iframe_t*) msg->data;
02610    
02611    struct misdn_stack *stack=find_stack_by_addr(frm->addr);
02612 
02613    if (!stack || stack->nt) {
02614       return 0;
02615    }
02616    
02617    cb_log(4,stack?stack->port:0,"handle_frm: frm->addr:%x frm->prim:%x\n",frm->addr,frm->prim);
02618 
02619    {
02620       struct misdn_bchannel dummybc;
02621       struct misdn_bchannel *bc;
02622       int ret=handle_cr(stack, frm);
02623 
02624       if (ret<0) {
02625          cb_log(3,stack?stack->port:0,"handle_frm: handle_cr <0 prim:%x addr:%x\n", frm->prim, frm->addr);
02626 
02627 
02628       }
02629 
02630       if(ret) {
02631          free_msg(msg);
02632          return 1;
02633       }
02634     
02635       bc=find_bc_by_l3id(stack, frm->dinfo);
02636 
02637       if (!bc && (frm->prim==(CC_RESTART|CONFIRM)) ) {
02638          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02639          bc=&dummybc;
02640       }
02641 
02642       if (!bc && (frm->prim==(CC_SETUP|INDICATION)) ) {
02643          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02644          dummybc.port=stack->port;
02645          dummybc.l3_id=frm->dinfo;
02646          bc=&dummybc;
02647 
02648          misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02649 
02650          free_msg(msg);
02651          return 1;
02652       }
02653 
02654     
02655 handle_frm_bc:
02656       if (bc ) {
02657          enum event_e event = isdn_msg_get_event(msgs_g, msg, 0);
02658          enum event_response_e response=RESPONSE_OK;
02659          int ret;
02660       
02661          isdn_msg_parse_event(msgs_g,msg,bc, 0);
02662          
02663          /** Preprocess some Events **/
02664          ret = handle_event(bc, event, frm);
02665          if (ret<0) {
02666             cb_log(0,stack->port,"couldn't handle event\n");
02667             free_msg(msg);
02668             return 1;
02669          }
02670          /*  shoot up event to App: */
02671          cb_log(5, stack->port, "lib Got Prim: Addr %x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02672       
02673          if(!isdn_get_info(msgs_g,event,0)) 
02674             cb_log(0, stack->port, "Unknown Event Ind: Addr:%x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02675          else
02676             response=cb_event(event, bc, glob_mgr->user_data);
02677 #if 1
02678          if (event == EVENT_SETUP) {
02679             switch (response) {
02680             case RESPONSE_IGNORE_SETUP_WITHOUT_CLOSE:
02681 
02682                cb_log(0, stack->port, "TOTALY IGNORING SETUP \n");               
02683                
02684                break;
02685             case RESPONSE_IGNORE_SETUP:
02686                /* I think we should send CC_RELEASE_CR, but am not sure*/
02687                bc->out_cause=16;
02688             
02689             case RESPONSE_RELEASE_SETUP:
02690                misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02691                if (bc->channel>0)
02692                   empty_chan_in_stack(stack, bc->channel);
02693                empty_bc(bc);
02694                bc_state_change(bc,BCHAN_CLEANED);
02695                bc->in_use=0;
02696 
02697                cb_log(0, stack->port, "GOT IGNORE SETUP\n");
02698                break;
02699             case RESPONSE_OK:
02700                cb_log(4, stack->port, "GOT SETUP OK\n");
02701 
02702                
02703                break;
02704             default:
02705                break;
02706             }
02707          }
02708 
02709          if (event == EVENT_RELEASE_COMPLETE) {
02710             /* release bchannel only after we've anounced the RELEASE_COMPLETE */
02711             int channel=bc->channel;
02712             int tmpcause=bc->cause; 
02713             int tmp_out_cause=bc->out_cause; 
02714             empty_bc(bc);
02715             bc->cause=tmpcause;
02716             bc->out_cause=tmp_out_cause;
02717             clean_up_bc(bc);
02718             
02719             if (tmpcause == 44) {
02720                cb_log(0,stack->port,"**** Received CAUSE:44, so not cleaning up channel %d\n", channel);
02721                cb_log(0,stack->port,"**** This channel is now no longer available,\nplease try to restart it with 'misdn send restart <port> <channel>'\n");
02722                set_chan_in_stack(stack, channel);
02723                bc->channel=channel;
02724                misdn_lib_send_restart(stack->port, channel);
02725             } else {
02726                if (channel>0)
02727                   empty_chan_in_stack(stack, channel);
02728             }
02729             bc->in_use=0;
02730          }
02731 
02732          if (event == EVENT_RESTART) {
02733             cb_log(0, stack->port, "**** Received RESTART_ACK channel:%d\n", bc->restart_channel);
02734             empty_chan_in_stack(stack, bc->restart_channel);
02735          }
02736 
02737          cb_log(5, stack->port, "Freeing Msg on prim:%x \n",frm->prim);
02738 
02739          
02740          free_msg(msg);
02741          return 1;
02742 #endif
02743       
02744       } else {
02745          struct misdn_bchannel dummybc;
02746          if (frm->prim!=(CC_FACILITY|INDICATION))
02747             cb_log(0, stack->port, " --> Didn't find BC so temporarly creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
02748          else
02749             cb_log(5, stack->port, " --> Using Dummy BC for FACILITy\n");
02750 
02751          memset (&dummybc,0,sizeof(dummybc));
02752          dummybc.port=stack->port;
02753          dummybc.l3_id=frm->dinfo;
02754          bc=&dummybc; 
02755          goto handle_frm_bc;
02756       }
02757    }
02758 
02759    cb_log(4, stack->port, "TE_FRM_HANDLER: Returning 0 on prim:%x \n",frm->prim);
02760    return 0;
02761 }
02762 
02763 
02764 static int handle_l1(msg_t *msg)
02765 {
02766    iframe_t *frm = (iframe_t*) msg->data;
02767    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02768    int i ;
02769    
02770    if (!stack) return 0 ;
02771 
02772    switch (frm->prim) {
02773    case PH_ACTIVATE | CONFIRM:
02774    case PH_ACTIVATE | INDICATION:
02775       cb_log (3, stack->port, "L1: PH L1Link Up!\n");
02776       stack->l1link=1;
02777       
02778       if (stack->nt) {
02779          
02780          if (stack->nst.l1_l2(&stack->nst, msg))
02781             free_msg(msg);
02782 
02783          if (stack->ptp)
02784             misdn_lib_get_l2_up(stack);
02785       } else {
02786          free_msg(msg);
02787       }
02788       
02789       for (i=0;i<=stack->b_num; i++) {
02790          if (stack->bc[i].evq != EVENT_NOTHING) {
02791             cb_log(4, stack->port, "Fireing Queued Event %s because L1 got up\n", isdn_get_info(msgs_g, stack->bc[i].evq, 0));
02792             misdn_lib_send_event(&stack->bc[i],stack->bc[i].evq);
02793             stack->bc[i].evq=EVENT_NOTHING;
02794          }
02795          
02796       }
02797       return 1;
02798 
02799    case PH_ACTIVATE | REQUEST:
02800       free_msg(msg);
02801       cb_log(3,stack->port,"L1: PH_ACTIVATE|REQUEST \n");
02802       return 1;
02803       
02804    case PH_DEACTIVATE | REQUEST:
02805       free_msg(msg);
02806       cb_log(3,stack->port,"L1: PH_DEACTIVATE|REQUEST \n");
02807       return 1;
02808       
02809    case PH_DEACTIVATE | CONFIRM:
02810    case PH_DEACTIVATE | INDICATION:
02811       cb_log (3, stack->port, "L1: PH L1Link Down! \n");
02812    
02813 #if 0
02814       for (i=0; i<=stack->b_num; i++) {
02815          if (global_state == MISDN_INITIALIZED)  {
02816             cb_event(EVENT_CLEANUP, &stack->bc[i], glob_mgr->user_data);
02817          }
02818       }
02819 #endif
02820       
02821       if (stack->nt) {
02822          if (stack->nst.l1_l2(&stack->nst, msg))
02823             free_msg(msg);
02824       } else {
02825          free_msg(msg);
02826       }
02827       
02828       stack->l1link=0;
02829       stack->l2link=0;
02830       return 1;
02831    }
02832   
02833    return 0;
02834 }
02835 
02836 static int handle_l2(msg_t *msg)
02837 {
02838    iframe_t *frm = (iframe_t*) msg->data;
02839 
02840    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02841    
02842    if (!stack) {
02843       return 0 ;
02844    }
02845    
02846    switch(frm->prim) {
02847 
02848    case DL_ESTABLISH | REQUEST:
02849       cb_log(1,stack->port,"DL_ESTABLISH|REQUEST \n");
02850       return 1;
02851    case DL_RELEASE | REQUEST:
02852       cb_log(1,stack->port,"DL_RELEASE|REQUEST \n");
02853       return 1;
02854       
02855    case DL_ESTABLISH | INDICATION:
02856    case DL_ESTABLISH | CONFIRM:
02857    {
02858       cb_log (3, stack->port, "L2: L2Link Up! \n");
02859       if (stack->ptp && stack->l2link) {
02860          cb_log (-1, stack->port, "L2: L2Link Up! but it's already UP.. must be faulty, blocking port\n"); 
02861          cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02862       }
02863       stack->l2link=1;
02864       free_msg(msg);
02865       return 1;
02866    }
02867    break;
02868     
02869    case DL_RELEASE | INDICATION:
02870    case DL_RELEASE | CONFIRM:
02871    {
02872       cb_log (3, stack->port, "L2: L2Link Down! \n");
02873       stack->l2link=0;
02874       
02875       free_msg(msg);
02876       return 1;
02877    }
02878    break;
02879    }
02880    return 0;
02881 }
02882 
02883 static int handle_mgmt(msg_t *msg)
02884 {
02885    iframe_t *frm = (iframe_t*) msg->data;
02886    struct misdn_stack *stack;
02887 
02888    if ( (frm->addr == 0) && (frm->prim == (MGR_DELLAYER|CONFIRM)) ) {
02889       cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: 0 !\n") ;
02890       free_msg(msg);
02891       return 1;
02892    }
02893    
02894    stack = find_stack_by_addr(frm->addr);
02895    
02896    if (!stack) {
02897       if (frm->prim == (MGR_DELLAYER|CONFIRM)) {
02898          cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: %x !\n",
02899                frm->addr) ;
02900          free_msg(msg);
02901          return 1;
02902       }
02903       
02904       return 0;
02905    }
02906    
02907    switch(frm->prim) {
02908    case MGR_SHORTSTATUS | INDICATION:
02909    case MGR_SHORTSTATUS | CONFIRM:
02910       cb_log(5, 0, "MGMT: Short status dinfo %x\n",frm->dinfo);
02911       
02912       switch (frm->dinfo) {
02913       case SSTATUS_L1_ACTIVATED:
02914          cb_log(3, 0, "MGMT: SSTATUS: L1_ACTIVATED \n");
02915          stack->l1link=1;
02916       
02917          break;
02918       case SSTATUS_L1_DEACTIVATED:
02919          cb_log(3, 0, "MGMT: SSTATUS: L1_DEACTIVATED \n");
02920          stack->l1link=0;
02921 #if 0
02922          clear_l3(stack);
02923 #endif
02924          break;
02925 
02926       case SSTATUS_L2_ESTABLISHED:
02927          cb_log(3, stack->port, "MGMT: SSTATUS: L2_ESTABLISH \n");
02928          stack->l2link=1;
02929          break;
02930          
02931       case SSTATUS_L2_RELEASED:
02932          cb_log(3, stack->port, "MGMT: SSTATUS: L2_RELEASED \n");
02933          stack->l2link=0;
02934          break;
02935       }
02936       
02937       free_msg(msg);
02938       return 1;
02939       
02940    case MGR_SETSTACK | INDICATION:
02941       cb_log(4, stack->port, "MGMT: SETSTACK|IND dinfo %x\n",frm->dinfo);
02942       free_msg(msg);
02943       return 1;
02944    case MGR_DELLAYER | CONFIRM:
02945       cb_log(4, stack->port, "MGMT: DELLAYER|CNF dinfo %x\n",frm->dinfo) ;
02946       free_msg(msg);
02947       return 1;
02948       
02949    }
02950    
02951    /*
02952    if ( (frm->prim & 0x0f0000) ==  0x0f0000) {
02953    cb_log(5, 0, "$$$ MGMT FRAME: prim %x addr %x dinfo %x\n",frm->prim, frm->addr, frm->dinfo) ;
02954    free_msg(msg);
02955    return 1;
02956    } */
02957     
02958    return 0;
02959 }
02960 
02961 
02962 static msg_t *fetch_msg(int midev) 
02963 {
02964    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
02965    int r;
02966 
02967    if (!msg) {
02968       cb_log(0, 0, "fetch_msg: alloc msg failed !!");
02969       return NULL;
02970    }
02971 
02972    AGAIN:
02973       r=mISDN_read(midev,msg->data,MAX_MSG_SIZE, TIMEOUT_10SEC);
02974       msg->len=r;
02975     
02976       if (r==0) {
02977          free_msg(msg); /* danger, cauz usualy freeing in main_loop */
02978          cb_log(6,0,"Got empty Msg..\n");
02979          return NULL;
02980       }
02981 
02982       if (r<0) {
02983          if (errno == EAGAIN) {
02984             /*we wait for mISDN here*/
02985             cb_log(4,0,"mISDN_read wants us to wait\n");
02986             usleep(5000);
02987             goto AGAIN;
02988          }
02989          
02990          cb_log(0,0,"mISDN_read returned :%d error:%s (%d)\n",r,strerror(errno),errno); 
02991       }
02992 
02993 #if 0
02994                if  (!(frm->prim == (DL_DATA|INDICATION) )|| (frm->prim == (PH_DATA|INDICATION)))
02995                        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 );
02996 #endif
02997       return msg;
02998 }
02999 
03000 void misdn_lib_isdn_l1watcher(int port)
03001 {
03002    struct misdn_stack *stack;
03003 
03004    for (stack = glob_mgr->stack_list; stack && (stack->port != port); stack = stack->next)
03005       ;
03006 
03007    if (stack) {
03008       cb_log(4, port, "Checking L1 State\n");   
03009       if (!stack->l1link) {
03010          cb_log(4, port, "L1 State Down, trying to get it up again\n"); 
03011          misdn_lib_get_short_status(stack);
03012          misdn_lib_get_l1_up(stack); 
03013          misdn_lib_get_l2_up(stack); 
03014       }
03015    }
03016 }
03017 
03018 static void misdn_lib_isdn_event_catcher(void *arg)
03019 {
03020    struct misdn_lib *mgr = arg;
03021    int zero_frm=0 , fff_frm=0 ;
03022    int midev= mgr->midev;
03023    int port=0;
03024    
03025    while (1) {
03026       msg_t *msg = fetch_msg(midev); 
03027       iframe_t *frm;
03028       
03029       
03030       if (!msg) continue;
03031       
03032       frm = (iframe_t*) msg->data;
03033       
03034       /** When we make a call from NT2Ast we get this frames **/
03035       if (frm->len == 0 && frm->addr == 0 && frm->dinfo == 0 && frm->prim == 0 ) {
03036          zero_frm++; 
03037          free_msg(msg);
03038          continue;
03039       } else {
03040          if (zero_frm) {
03041             cb_log(0, port, "*** Alert: %d zero_frms caught\n", zero_frm);
03042             zero_frm = 0 ;
03043          }
03044       }
03045       
03046       /** I get this sometimes after setup_bc **/
03047       if (frm->len == 0 &&  frm->dinfo == 0 && frm->prim == 0xffffffff ) {
03048          fff_frm++; 
03049          free_msg(msg);
03050          continue;
03051       } else {
03052          if (fff_frm) {
03053             cb_log(0, port, "*** Alert: %d fff_frms caught\n", fff_frm);
03054             fff_frm = 0 ;
03055          }
03056       }
03057       
03058       manager_isdn_handler(frm, msg);
03059    }
03060 
03061 }
03062 
03063 
03064 /** App Interface **/
03065 
03066 int te_lib_init() {
03067    char buff[1025] = "";
03068    iframe_t *frm=(iframe_t*)buff;
03069    int midev=mISDN_open();
03070    int ret;
03071 
03072    if  (midev<=0) return midev;
03073   
03074 /* create entity for layer 3 TE-mode */
03075    mISDN_write_frame(midev, buff, 0, MGR_NEWENTITY | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
03076    ret = mISDN_read_frame(midev, frm, sizeof(iframe_t), 0, MGR_NEWENTITY | CONFIRM, TIMEOUT_1SEC);
03077   
03078    if (ret < mISDN_HEADER_LEN) {
03079    noentity:
03080       fprintf(stderr, "cannot request MGR_NEWENTITY from mISDN: %s\n",strerror(errno));
03081       exit(-1);
03082    }
03083   
03084    entity = frm->dinfo & 0xffff ;
03085   
03086    if (!entity)
03087       goto noentity;
03088 
03089    return midev;
03090   
03091 }
03092 
03093 void te_lib_destroy(int midev)
03094 {
03095    char buf[1024];
03096    mISDN_write_frame(midev, buf, 0, MGR_DELENTITY | REQUEST, entity, 0, NULL, TIMEOUT_1SEC);
03097 
03098    cb_log(4, 0, "Entetity deleted\n");
03099    mISDN_close(midev);
03100    cb_log(4, 0, "midev closed\n");
03101 }
03102 
03103 
03104 
03105 void misdn_lib_transfer(struct misdn_bchannel* holded_bc)
03106 {
03107    holded_bc->holded=0;
03108 }
03109 
03110 struct misdn_bchannel *manager_find_bc_by_pid(int pid)
03111 {
03112    struct misdn_stack *stack;
03113    int i;
03114   
03115    for (stack=glob_mgr->stack_list;
03116         stack;
03117         stack=stack->next) {
03118       for (i=0; i<=stack->b_num; i++)
03119          if (stack->bc[i].pid == pid) return &stack->bc[i];
03120    }
03121   
03122    return NULL;
03123 }
03124 
03125 struct misdn_bchannel *manager_find_bc_holded(struct misdn_bchannel* bc)
03126 {
03127    struct misdn_stack *stack=get_stack_by_bc(bc);
03128    return find_bc_holded(stack);
03129 }
03130 
03131 
03132 
03133 static int test_inuse(struct misdn_bchannel *bc)
03134 {
03135    struct timeval now;
03136    gettimeofday(&now, NULL);
03137    if (!bc->in_use) {
03138       if (misdn_lib_port_is_pri(bc->port) && bc->last_used.tv_sec == now.tv_sec ) {
03139          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);
03140          return 1;
03141       }
03142       
03143 
03144       cb_log(3,bc->port, "channel with stid:%x not in use!\n", bc->b_stid);
03145       return 0;
03146    }
03147    
03148    cb_log(2,bc->port, "channel with stid:%x in use!\n", bc->b_stid);
03149    return 1;
03150 }
03151 
03152 
03153 static void prepare_bc(struct misdn_bchannel*bc, int channel)
03154 {
03155    bc->channel = channel;
03156    bc->channel_preselected = channel?1:0;
03157    bc->in_use = 1;
03158    bc->need_disconnect=1;
03159    bc->need_release=1;
03160    bc->need_release_complete=1;
03161    bc->cause=16;
03162 
03163    if (++mypid>5000) mypid=1;
03164    bc->pid=mypid;
03165 
03166 #if 0
03167    bc->addr=0;
03168    bc->b_stid=0;
03169    bc->layer_id=0;
03170 #endif
03171 }
03172 
03173 struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel, int inout, int dec)
03174 {
03175    struct misdn_stack *stack;
03176    int i;
03177    
03178    if (channel < 0 || channel > MAX_BCHANS) {
03179       cb_log(0,port,"Requested channel out of bounds (%d)\n",channel);
03180       return NULL;
03181    }
03182 
03183    usleep(1000);
03184 
03185    for (stack=glob_mgr->stack_list; stack; stack=stack->next) {
03186     
03187       if (stack->port == port) {
03188          int maxnum;
03189 
03190          if (stack->blocked) {
03191             cb_log(0,port,"Port is blocked\n");
03192             return NULL;
03193          }
03194       
03195          if (channel > 0) {
03196             if (channel <= stack->b_num) {
03197                for (i = 0; i < stack->b_num; i++) {
03198                   if ( stack->bc[i].channel == channel) {
03199                      if (test_inuse(&stack->bc[i])) { 
03200                         cb_log(0,port,"Requested channel:%d on port:%d is already in use\n",channel, port);
03201                         return NULL;
03202 
03203                      } else {
03204                         prepare_bc(&stack->bc[i], channel);
03205                         return &stack->bc[i];
03206                      }
03207                   }
03208                }
03209             } else {
03210                cb_log(0,port,"Requested channel:%d is out of bounds on port:%d\n",channel, port);
03211                return NULL;
03212             }
03213          }
03214 
03215          maxnum = inout && !stack->pri && !stack->ptp ? stack->b_num + 1 : stack->b_num;
03216 
03217          if (dec) {
03218             for (i = maxnum-1; i>=0; i--) {
03219                if (!test_inuse(&stack->bc[i])) {
03220                   /* 3. channel on bri means CW*/
03221                   if (!stack->pri && i==stack->b_num)
03222                      stack->bc[i].cw=1;
03223                      
03224                   prepare_bc(&stack->bc[i], channel);
03225                   stack->bc[i].dec=1;
03226                   return &stack->bc[i];
03227                }
03228             }
03229          } else {
03230             for (i = 0; i <maxnum; i++) {
03231                if (!test_inuse(&stack->bc[i])) {
03232                   /* 3. channel on bri means CW*/
03233                   if (!stack->pri && i==stack->b_num)
03234                      stack->bc[i].cw=1;
03235 
03236                   prepare_bc(&stack->bc[i], channel);
03237                   return &stack->bc[i];
03238                }
03239             }
03240          }
03241 
03242          cb_log(1,port,"There is no free channel on port (%d)\n",port);
03243          return NULL;
03244       }
03245    }
03246 
03247    cb_log(0,port,"Port is not configured (%d)\n",port);
03248    return NULL;
03249 }
03250 
03251 
03252 static char *fac2str (enum FacFunction func)
03253 {
03254    struct arr_el { 
03255       enum FacFunction p; 
03256       char *s ; 
03257    } arr[] = {
03258       { Fac_None, "Fac_None" },
03259       { Fac_CD, "Fac_CD"},
03260    };
03261    
03262    int i;
03263    
03264    for (i=0; i < sizeof(arr)/sizeof( struct arr_el) ; i ++)
03265       if ( arr[i].p==func) return arr[i].s;
03266    
03267    return "unknown";
03268 }
03269 
03270 void misdn_lib_log_ies(struct misdn_bchannel *bc)
03271 {
03272    struct misdn_stack *stack;
03273 
03274    if (!bc) return;
03275 
03276    stack = get_stack_by_bc(bc);
03277 
03278    if (!stack) return;
03279 
03280    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);
03281    
03282    cb_log(2, stack->port,
03283           " --> info_dad:%s onumplan:%c dnumplan:%c rnumplan:%c cpnnumplan:%c\n",
03284           bc->info_dad,
03285           bc->onumplan>=0?'0'+bc->onumplan:' ',
03286           bc->dnumplan>=0?'0'+bc->dnumplan:' ',
03287           bc->rnumplan>=0?'0'+bc->rnumplan:' ',
03288           bc->cpnnumplan>=0?'0'+bc->cpnnumplan:' '
03289       );
03290    
03291    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);
03292    cb_log(4, stack->port, " --> screen:%d --> pres:%d\n",
03293          bc->screen, bc->pres);
03294    
03295    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);
03296    
03297    cb_log(4, stack->port, " --> facility:%s out_facility:%s\n",fac2str(bc->fac_in.Function),fac2str(bc->fac_out.Function));
03298 
03299    cb_log(5, stack->port, " --> urate:%d rate:%d mode:%d user1:%d\n", bc->urate, bc->rate, bc->mode,bc->user1);
03300    
03301    cb_log(5, stack->port, " --> bc:%p h:%d sh:%d\n", bc, bc->holded, bc->stack_holder);
03302 }
03303 
03304 void misdn_send_lock(struct misdn_bchannel *bc);
03305 void misdn_send_unlock(struct misdn_bchannel *bc);
03306 
03307 #define RETURN(a,b) {retval=a; goto b;}
03308 
03309 void misdn_send_lock(struct misdn_bchannel *bc)
03310 {
03311    //cb_log(0,bc->port,"Locking bc->pid:%d\n", bc->pid);
03312    if (bc->send_lock)
03313       pthread_mutex_lock(&bc->send_lock->lock);
03314 }
03315 
03316 void misdn_send_unlock(struct misdn_bchannel *bc)
03317 {
03318    //cb_log(0,bc->port,"UnLocking bc->pid:%d\n", bc->pid);
03319    if (bc->send_lock)
03320       pthread_mutex_unlock(&bc->send_lock->lock);
03321 }
03322 
03323 int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event )
03324 {
03325    msg_t *msg; 
03326    int retval=0;
03327    struct misdn_stack *stack;
03328   
03329    if (!bc) RETURN(-1,OUT_POST_UNLOCK);
03330    
03331    stack = get_stack_by_bc(bc);
03332    
03333    if (!stack) {
03334       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);
03335       RETURN(-1,OUT);
03336    }
03337    
03338    misdn_send_lock(bc);
03339 
03340 
03341    cb_log(6,stack->port,"SENDEVENT: stack->nt:%d stack->uperid:%x\n",stack->nt, stack->upper_id);
03342 
03343    if ( stack->nt && !stack->l1link) {
03344       /** Queue Event **/
03345       bc->evq=event;
03346       cb_log(1, stack->port, "Queueing Event %s because L1 is down (btw. Activating L1)\n", isdn_get_info(msgs_g, event, 0));
03347       misdn_lib_get_l1_up(stack);
03348       RETURN(0,OUT);
03349    }
03350    
03351    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);
03352    cb_log(4, stack->port, " --> bc_state:%s\n",bc_state2str(bc->bc_state));
03353    misdn_lib_log_ies(bc);
03354    
03355    switch (event) {
03356    case EVENT_SETUP:
03357       if (create_process(glob_mgr->midev, bc)<0) {
03358          cb_log(0,  stack->port, " No free channel at the moment @ send_event\n");
03359 
03360          RETURN(-ENOCHAN,OUT);
03361       }
03362       break;
03363 
03364    case EVENT_PROGRESS:
03365    case EVENT_ALERTING:
03366    case EVENT_PROCEEDING:
03367    case EVENT_SETUP_ACKNOWLEDGE:
03368    case EVENT_CONNECT:
03369       if (!stack->nt) break;
03370 
03371    case EVENT_RETRIEVE_ACKNOWLEDGE:
03372 
03373       if (stack->nt) {
03374          if (bc->channel <=0 ) { /*  else we have the channel already */
03375             if (find_free_chan_in_stack(stack, bc, 0, 0)<0) {
03376                cb_log(0, stack->port, " No free channel at the moment\n");
03377                /*FIXME: add disconnect*/
03378                RETURN(-ENOCHAN,OUT);
03379             }
03380          }
03381          /* Its that i generate channels */
03382       }
03383 
03384       retval=setup_bc(bc);
03385       if (retval == -EINVAL) {
03386          cb_log(0,bc->port,"send_event: setup_bc failed\n");
03387       }
03388 
03389       if (misdn_cap_is_speech(bc->capability)) {
03390          if ((event==EVENT_CONNECT)||(event==EVENT_RETRIEVE_ACKNOWLEDGE)) {
03391             if ( *bc->crypt_key ) {
03392                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);
03393                
03394                manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
03395             }
03396             
03397             if (!bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03398             manager_ec_enable(bc);
03399             
03400             if (bc->txgain != 0) {
03401                cb_log(4, stack->port,  "--> Changing txgain to %d\n", bc->txgain);
03402                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03403             }
03404             
03405             if ( bc->rxgain != 0 ) {
03406                cb_log(4, stack->port,  "--> Changing rxgain to %d\n", bc->rxgain);
03407                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03408             }
03409          }
03410       }
03411       break;
03412 
03413    case EVENT_HOLD_ACKNOWLEDGE:
03414    {
03415       struct misdn_bchannel *holded_bc=malloc(sizeof(struct misdn_bchannel));
03416       if (!holded_bc) {
03417          cb_log(0,bc->port, "Could not allocate holded_bc!!!\n");
03418          RETURN(-1,OUT);
03419       }
03420 
03421       /*backup the bc*/
03422       memcpy(holded_bc,bc,sizeof(struct misdn_bchannel));
03423       holded_bc->holded=1;
03424       bc_state_change(holded_bc,BCHAN_CLEANED);
03425 
03426       stack_holder_add(stack,holded_bc);
03427    
03428       /*kill the bridge and clean the bchannel*/
03429       if (stack->nt) {
03430          int channel;
03431          if (bc->bc_state == BCHAN_BRIDGED) {
03432             struct misdn_bchannel *bc2;
03433 
03434             misdn_split_conf(bc,bc->conf_id);
03435             bc2 = find_bc_by_confid(bc->conf_id);
03436             if (!bc2) {
03437                cb_log(0,bc->port,"We have no second bc in bridge???\n");
03438             } else {
03439                misdn_split_conf(bc2,bc->conf_id);
03440             }
03441          }
03442          
03443          channel = bc->channel;
03444 
03445          empty_bc(bc);
03446          clean_up_bc(bc);
03447 
03448          if (channel>0)
03449             empty_chan_in_stack(stack,channel);
03450 
03451          bc->in_use=0;  
03452       }
03453       
03454    }
03455    break;
03456 
03457    /* finishing the channel eh ? */
03458    case EVENT_DISCONNECT:
03459       if (!bc->need_disconnect) {
03460          cb_log(0,bc->port," --> we have already send Disconnect\n");
03461          RETURN(-1,OUT);
03462       }
03463       
03464       bc->need_disconnect=0;
03465       break;
03466    case EVENT_RELEASE:
03467       if (!bc->need_release) {
03468          cb_log(0,bc->port," --> we have already send Release\n");
03469          RETURN(-1,OUT);
03470       }
03471       bc->need_disconnect=0;
03472       bc->need_release=0;
03473       break;
03474    case EVENT_RELEASE_COMPLETE:
03475       if (!bc->need_release_complete) {
03476          cb_log(0,bc->port," --> we have already send Release_complete\n");
03477          RETURN(-1,OUT);
03478       }
03479       bc->need_disconnect=0;
03480       bc->need_release=0;
03481       bc->need_release_complete=0;
03482 
03483       if (!stack->nt) {
03484          /*create clenaup in TE*/
03485          int channel=bc->channel;
03486 
03487          int tmpcause=bc->cause; 
03488          int tmp_out_cause=bc->out_cause; 
03489          empty_bc(bc);
03490          bc->cause=tmpcause;
03491          bc->out_cause=tmp_out_cause;
03492          clean_up_bc(bc);
03493          
03494          if (channel>0)
03495             empty_chan_in_stack(stack,channel);
03496          
03497          bc->in_use=0;
03498       }
03499       break;
03500     
03501    case EVENT_CONNECT_ACKNOWLEDGE:
03502 
03503       if ( bc->nt || misdn_cap_is_speech(bc->capability)) {
03504          int retval=setup_bc(bc);
03505          if (retval == -EINVAL){
03506             cb_log(0,bc->port,"send_event: setup_bc failed\n");
03507             
03508          }
03509       }
03510       
03511       if (misdn_cap_is_speech(bc->capability)) {
03512          if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03513          manager_ec_enable(bc);
03514 
03515          if ( bc->txgain != 0 ) {
03516             cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
03517             manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03518          }
03519          if ( bc->rxgain != 0 ) {
03520             cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
03521             manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03522          }
03523       }
03524       break;
03525     
03526    default:
03527       break;
03528    }
03529   
03530    /* Later we should think about sending bchannel data directly to misdn. */
03531    msg = isdn_msg_build_event(msgs_g, bc, event, stack->nt);
03532    msg_queue_tail(&stack->downqueue, msg);
03533    sem_post(&glob_mgr->new_msg);
03534   
03535 OUT:
03536    misdn_send_unlock(bc);
03537 
03538 OUT_POST_UNLOCK:
03539    return retval; 
03540 }
03541 
03542 
03543 static int handle_err(msg_t *msg)
03544 {
03545    iframe_t *frm = (iframe_t*) msg->data;
03546 
03547 
03548    if (!frm->addr) {
03549       static int cnt=0;
03550       if (!cnt)
03551          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x\n",frm->prim,frm->dinfo);
03552       cnt++;
03553       if (cnt>100) {
03554          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x (already more than 100 of them)\n",frm->prim,frm->dinfo);
03555          cnt=0;
03556       }
03557       
03558       free_msg(msg);
03559       return 1;
03560       
03561    }
03562    
03563    switch (frm->prim) {
03564       case MGR_SETSTACK|INDICATION:
03565          return handle_bchan(msg);
03566       break;
03567 
03568       case MGR_SETSTACK|CONFIRM:
03569       case MGR_CLEARSTACK|CONFIRM:
03570          free_msg(msg) ; 
03571          return 1;
03572       break;
03573 
03574       case DL_DATA|CONFIRM:
03575          cb_log(4,0,"DL_DATA|CONFIRM\n");
03576          free_msg(msg);
03577          return 1;
03578 
03579       case PH_CONTROL|CONFIRM:
03580          cb_log(4,0,"PH_CONTROL|CONFIRM\n");
03581          free_msg(msg);
03582          return 1;
03583 
03584       case DL_DATA|INDICATION:
03585       {
03586          int port=(frm->addr&MASTER_ID_MASK) >> 8;
03587          int channel=(frm->addr&CHILD_ID_MASK) >> 16;
03588          struct misdn_bchannel *bc;
03589 
03590          /*we flush the read buffer here*/
03591          
03592          cb_log(9,0,"BCHAN DATA without BC: addr:%x port:%d channel:%d\n",frm->addr, port,channel);
03593          
03594          free_msg(msg); 
03595          return 1;
03596          
03597          
03598          bc = find_bc_by_channel(port, channel);
03599 
03600          if (!bc) {
03601             struct misdn_stack *stack = find_stack_by_port(port);
03602 
03603             if (!stack) {
03604                cb_log(0,0," --> stack not found\n");
03605                free_msg(msg);
03606                return 1;
03607             }
03608             
03609             cb_log(0,0," --> bc not found by channel\n");
03610             if (stack->l2link)
03611                misdn_lib_get_l2_down(stack);
03612 
03613             if (stack->l1link)
03614                misdn_lib_get_l1_down(stack);
03615 
03616             free_msg(msg);
03617             return 1;
03618          }
03619          
03620          cb_log(3,port," --> BC in state:%s\n", bc_state2str(bc->bc_state));
03621       }
03622    }
03623 
03624    return 0;
03625 }
03626 
03627 #if 0
03628 static int queue_l2l3(msg_t *msg)
03629 {
03630    iframe_t *frm= (iframe_t*)msg->data;
03631    struct misdn_stack *stack;
03632    stack=find_stack_by_addr( frm->addr );
03633 
03634    
03635    if (!stack) {
03636       return 0;
03637    }
03638 
03639    msg_queue_tail(&stack->upqueue, msg);
03640    sem_post(&glob_mgr->new_msg);
03641    return 1;
03642 }
03643 #endif
03644 
03645 int manager_isdn_handler(iframe_t *frm ,msg_t *msg)
03646 {  
03647 
03648    if (frm->dinfo==0xffffffff && frm->prim==(PH_DATA|CONFIRM)) {
03649       cb_log(0,0,"SERIOUS BUG, dinfo == 0xffffffff, prim == PH_DATA | CONFIRM !!!!\n");
03650    }
03651 
03652    if ( ((frm->addr | ISDN_PID_BCHANNEL_BIT )>> 28 ) == 0x5) {
03653       static int unhandled_bmsg_count=1000;
03654       if (handle_bchan(msg)) {
03655          return 0 ;
03656       }
03657          
03658       if (unhandled_bmsg_count==1000) {
03659          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);     
03660          unhandled_bmsg_count=0;
03661       }
03662 
03663       unhandled_bmsg_count++;
03664       free_msg(msg);
03665       return 0;
03666    }  
03667 
03668 #ifdef RECV_FRM_SYSLOG_DEBUG
03669    syslog(LOG_NOTICE,"mISDN recv: P(%02d): ADDR:%x PRIM:%x DINFO:%x\n",stack->port, frm->addr, frm->prim, frm->dinfo);
03670 #endif
03671 
03672    if (handle_timers(msg)) 
03673       return 0 ;
03674 
03675    
03676    if (handle_mgmt(msg)) 
03677       return 0 ; 
03678    
03679    if (handle_l2(msg)) 
03680       return 0 ;
03681 
03682    /* Its important to handle l1 AFTER l2  */
03683    if (handle_l1(msg)) 
03684       return 0 ;
03685    
03686    if (handle_frm_nt(msg)) {
03687       return 0;
03688    }
03689 
03690    if (handle_frm(msg)) {
03691       return 0;
03692    }
03693 
03694    if (handle_err(msg)) {
03695       return 0 ;
03696    }
03697 
03698    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);      
03699    free_msg(msg);
03700    
03701 
03702    return 0;
03703 }
03704 
03705 
03706 
03707 
03708 int misdn_lib_get_port_info(int port)
03709 {
03710    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03711    iframe_t *frm;
03712    struct misdn_stack *stack=find_stack_by_port(port);
03713    if (!msg) {
03714       cb_log(0, port, "misgn_lib_get_port: alloc_msg failed!\n");
03715       return -1;
03716    }
03717    frm=(iframe_t*)msg->data;
03718    if (!stack ) {
03719       cb_log(0, port, "There is no Stack for this port.\n");
03720       return -1;
03721    }
03722    /* activate bchannel */
03723    frm->prim = CC_STATUS_ENQUIRY | REQUEST;
03724 
03725    frm->addr = stack->upper_id| FLG_MSG_DOWN;
03726 
03727    frm->dinfo = 0;
03728    frm->len = 0;
03729   
03730    msg_queue_tail(&glob_mgr->activatequeue, msg);
03731    sem_post(&glob_mgr->new_msg);
03732 
03733   
03734    return 0; 
03735 }
03736 
03737 
03738 int queue_cleanup_bc(struct misdn_bchannel *bc) 
03739 {
03740    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03741    iframe_t *frm;
03742    if (!msg) {
03743       cb_log(0, bc->port, "misgn_lib_get_port: alloc_msg failed!\n");
03744       return -1;
03745    }
03746    frm=(iframe_t*)msg->data;
03747 
03748    /* activate bchannel */
03749    frm->prim = MGR_CLEARSTACK| REQUEST;
03750 
03751    frm->addr = bc->l3_id;
03752 
03753    frm->dinfo = bc->port;
03754    frm->len = 0;
03755   
03756    msg_queue_tail(&glob_mgr->activatequeue, msg);
03757    sem_post(&glob_mgr->new_msg);
03758 
03759    return 0; 
03760 
03761 }
03762 
03763 int misdn_lib_pid_restart(int pid) 
03764 {
03765    struct misdn_bchannel *bc=manager_find_bc_by_pid(pid);
03766 
03767    if (bc) {
03768       manager_clean_bc(bc);
03769    }
03770    return 0;
03771 }
03772 
03773 /*Sends Restart message for every bchnanel*/
03774 int misdn_lib_send_restart(int port, int channel)
03775 {
03776    struct misdn_stack *stack=find_stack_by_port(port);
03777    struct misdn_bchannel dummybc;
03778    /*default is all channels*/
03779    cb_log(0, port, "Sending Restarts on this port.\n");
03780    
03781    misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
03782 
03783    /*default is all channels*/
03784    if (channel <0) {
03785       dummybc.channel=-1;
03786       cb_log(0, port, "Restarting and all Interfaces\n");
03787       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03788 
03789       return 0;
03790    }
03791 
03792    /*if a channel is specified we restart only this one*/
03793    if (channel >0) {
03794       int cnt;
03795       dummybc.channel=channel;
03796       cb_log(0, port, "Restarting and cleaning channel %d\n",channel);
03797       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03798       /* clean up chan in stack, to be sure we don't think it's
03799        * in use anymore */
03800       for (cnt=0; cnt<=stack->b_num; cnt++) {
03801          if (stack->bc[cnt].channel == channel) {
03802             empty_bc(&stack->bc[cnt]);
03803             clean_up_bc(&stack->bc[cnt]);
03804             stack->bc[cnt].in_use=0;
03805          }
03806       }
03807    }
03808 
03809    return 0;
03810 }
03811 
03812 /*reinitializes the L2/L3*/
03813 int misdn_lib_port_restart(int port)
03814 {
03815    struct misdn_stack *stack=find_stack_by_port(port);
03816  
03817    cb_log(0, port, "Restarting this port.\n");
03818    if (stack) {
03819       cb_log(0, port, "Stack:%p\n",stack);
03820          
03821       clear_l3(stack);
03822       {
03823          msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03824          iframe_t *frm;
03825 
03826          if (!msg) {
03827             cb_log(0, port, "port_restart: alloc_msg failed\n");
03828             return -1;
03829          }
03830          
03831          frm=(iframe_t*)msg->data;
03832          /* we must activate if we are deactivated */
03833          /* activate bchannel */
03834          frm->prim = DL_RELEASE | REQUEST;
03835          frm->addr = stack->upper_id | FLG_MSG_DOWN;
03836 
03837          frm->dinfo = 0;
03838          frm->len = 0;
03839          msg_queue_tail(&glob_mgr->activatequeue, msg);
03840          sem_post(&glob_mgr->new_msg);
03841       }
03842 
03843       if (stack->nt)
03844          misdn_lib_reinit_nt_stack(stack->port);
03845     
03846    }
03847 
03848    return 0;
03849 }
03850 
03851 
03852 
03853 sem_t handler_started; 
03854 
03855 static void manager_event_handler(void *arg)
03856 {
03857    sem_post(&handler_started); 
03858    while (1) {
03859       struct misdn_stack *stack;
03860       msg_t *msg;
03861     
03862       /** wait for events **/
03863       sem_wait(&glob_mgr->new_msg);
03864     
03865       for (msg=msg_dequeue(&glob_mgr->activatequeue);
03866            msg;
03867            msg=msg_dequeue(&glob_mgr->activatequeue)
03868          )
03869       {
03870    
03871          iframe_t *frm =  (iframe_t*) msg->data ;
03872 
03873          switch ( frm->prim) {
03874 
03875          case MGR_CLEARSTACK | REQUEST:
03876             /*a queued bchannel cleanup*/
03877             {
03878                struct misdn_stack *stack=find_stack_by_port(frm->dinfo);
03879                struct misdn_bchannel *bc;
03880                if (!stack) {
03881                   cb_log(0,0,"no stack found with port [%d]!! so we cannot cleanup the bc\n",frm->dinfo);
03882                   free_msg(msg);
03883                   break;
03884                }
03885                
03886                bc = find_bc_by_l3id(stack, frm->addr);
03887                if (bc) {
03888                   cb_log(1,bc->port,"CLEARSTACK queued, cleaning up\n");
03889                   clean_up_bc(bc);
03890                } else {
03891                   cb_log(0,stack->port,"bc could not be cleaned correctly !! addr [%x]\n",frm->addr);
03892                }
03893             }
03894             free_msg(msg); 
03895             break;
03896          case MGR_SETSTACK | REQUEST :
03897             break;
03898          default:
03899             mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
03900             free_msg(msg);
03901          }
03902       }
03903 
03904       for (stack=glob_mgr->stack_list;
03905            stack;
03906            stack=stack->next ) { 
03907 
03908          while ( (msg=msg_dequeue(&stack->upqueue)) ) {
03909             /** Handle L2/3 Signalling after bchans **/ 
03910             if (!handle_frm_nt(msg)) {
03911                /* Maybe it's TE */
03912                if (!handle_frm(msg)) {
03913                   /* wow none! */
03914                   cb_log(0,stack->port,"Wow we've got a strange issue while dequeueing a Frame\n");
03915                }
03916             }
03917          }
03918 
03919          /* Here we should check if we really want to 
03920             send all the messages we've queued, lets 
03921             assume we've queued a Disconnect, but 
03922             received it already from the other side!*/
03923            
03924          while ( (msg=msg_dequeue(&stack->downqueue)) ) {
03925             if (stack->nt ) {
03926                if (stack->nst.manager_l3(&stack->nst, msg))
03927                   cb_log(0, stack->port, "Error@ Sending Message in NT-Stack.\n");
03928      
03929             } else {
03930                iframe_t *frm = (iframe_t *)msg->data;
03931                struct misdn_bchannel *bc = find_bc_by_l3id(stack, frm->dinfo);
03932                if (bc) 
03933                   send_msg(glob_mgr->midev, bc, msg);
03934                else  {
03935                   if (frm->dinfo == MISDN_ID_GLOBAL || frm->dinfo == MISDN_ID_DUMMY ) {
03936                      struct misdn_bchannel dummybc;
03937                      cb_log(5,0," --> GLOBAL/DUMMY\n");
03938                      misdn_make_dummy(&dummybc, stack->port, frm->dinfo, stack->nt, 0);
03939                      send_msg(glob_mgr->midev, &dummybc, msg);
03940                   } else {
03941                      cb_log(0,0,"No bc for Message\n");
03942                   }
03943                }
03944             }
03945          }
03946       }
03947    }
03948 }
03949 
03950 
03951 int misdn_lib_maxports_get() { /** BE AWARE WE HAVE NO CB_LOG HERE! **/
03952    
03953    int i = mISDN_open();
03954    int max=0;
03955    
03956    if (i<0)
03957       return -1;
03958 
03959    max = mISDN_get_stack_count(i);
03960    
03961    mISDN_close(i);
03962    
03963    return max;
03964 }
03965 
03966 
03967 void misdn_lib_nt_keepcalls( int kc)
03968 {
03969 #ifdef FEATURE_NET_KEEPCALLS
03970    if (kc) {
03971       struct misdn_stack *stack=get_misdn_stack();
03972       for ( ; stack; stack=stack->next) {
03973          stack->nst.feature |= FEATURE_NET_KEEPCALLS;
03974       }
03975    }
03976 #endif
03977 }
03978 
03979 void misdn_lib_nt_debug_init( int flags, char *file ) 
03980 {
03981    static int init=0;
03982    char *f;
03983    
03984    if (!flags) 
03985       f=NULL;
03986    else
03987       f=file;
03988 
03989    if (!init) {
03990       debug_init( flags , f, f, f);
03991       init=1;
03992    } else {
03993       debug_close();
03994       debug_init( flags , f, f, f);
03995    }
03996 }
03997 
03998 
03999 int misdn_lib_init(char *portlist, struct misdn_lib_iface *iface, void *user_data)
04000 {
04001    struct misdn_lib *mgr=calloc(1, sizeof(struct misdn_lib));
04002    char *tok, *tokb;
04003    char plist[1024];
04004    int midev;
04005    int port_count=0;
04006  
04007    cb_log = iface->cb_log;
04008    cb_event = iface->cb_event;
04009    cb_jb_empty = iface->cb_jb_empty;
04010    
04011    glob_mgr = mgr;
04012   
04013    msg_init();
04014 
04015    misdn_lib_nt_debug_init(0,NULL);
04016    
04017    if (!portlist || (*portlist == 0) ) return 1;
04018    
04019    init_flip_bits();
04020    
04021    {
04022       strncpy(plist,portlist, 1024);
04023       plist[1023] = 0;
04024    }
04025   
04026    memcpy(tone_425_flip,tone_425,TONE_425_SIZE);
04027    flip_buf_bits(tone_425_flip,TONE_425_SIZE);
04028 
04029    memcpy(tone_silence_flip,tone_SILENCE,TONE_SILENCE_SIZE);
04030    flip_buf_bits(tone_silence_flip,TONE_SILENCE_SIZE);
04031   
04032    midev=te_lib_init();
04033    mgr->midev=midev;
04034 
04035    port_count=mISDN_get_stack_count(midev);
04036   
04037    msg_queue_init(&mgr->activatequeue);
04038   
04039    if (sem_init(&mgr->new_msg, 1, 0)<0)
04040       sem_init(&mgr->new_msg, 0, 0);
04041  
04042    for (tok=strtok_r(plist," ,",&tokb );
04043         tok; 
04044         tok=strtok_r(NULL," ,",&tokb)) {
04045       int port = atoi(tok);
04046       struct misdn_stack *stack;
04047       static int first=1;
04048       int ptp=0;
04049     
04050       if (strstr(tok, "ptp"))
04051          ptp=1;
04052 
04053       if (port > port_count) {
04054          cb_log(0, port, "Couldn't Initialize this port since we have only %d ports\n", port_count);
04055          exit(1);
04056       }
04057       stack=stack_init(midev, port, ptp);
04058     
04059       if (!stack) {
04060          perror("init_stack");
04061          exit(1);
04062       }
04063     
04064       {
04065          int i;
04066          for(i=0;i<=stack->b_num; i++) {
04067             int r;
04068             if ((r=init_bc(stack, &stack->bc[i], stack->midev,port,i, "", 1))<0) {
04069                cb_log(0, port, "Got Err @ init_bc :%d\n",r);
04070                exit(1);
04071             }
04072          }
04073       }
04074 
04075       if (stack && first) {
04076          mgr->stack_list=stack;
04077          first=0;
04078          continue;
04079       }
04080     
04081       if (stack) {
04082          struct misdn_stack * help;
04083          for ( help=mgr->stack_list; help; help=help->next ) 
04084             if (help->next == NULL) break;
04085          help->next=stack;
04086       }
04087     
04088    }
04089   
04090    if (sem_init(&handler_started, 1, 0)<0)
04091       sem_init(&handler_started, 0, 0);
04092   
04093    cb_log(8, 0, "Starting Event Handler\n");
04094    pthread_create( &mgr->event_handler_thread, NULL,(void*)manager_event_handler, mgr);
04095   
04096    sem_wait(&handler_started) ;
04097    cb_log(8, 0, "Starting Event Catcher\n");
04098    pthread_create( &mgr->event_thread, NULL, (void*)misdn_lib_isdn_event_catcher, mgr);
04099   
04100    cb_log(8, 0, "Event Catcher started\n");
04101 
04102    global_state= MISDN_INITIALIZED; 
04103   
04104    return (mgr == NULL);
04105 }
04106 
04107 void misdn_lib_destroy()
04108 {
04109    struct misdn_stack *help;
04110    int i;
04111   
04112    for ( help=glob_mgr->stack_list; help; help=help->next ) {
04113       for(i=0;i<=help->b_num; i++) {
04114          char buf[1024];
04115          mISDN_write_frame(help->midev, buf, help->bc[i].addr, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
04116          help->bc[i].addr = 0;
04117       }
04118       cb_log (1, help->port, "Destroying this port.\n");
04119       stack_destroy(help);
04120    }
04121    
04122    if (global_state == MISDN_INITIALIZED) {
04123       cb_log(4, 0, "Killing Handler Thread\n");
04124       if ( pthread_cancel(glob_mgr->event_handler_thread) == 0 ) {
04125          cb_log(4, 0, "Joining Handler Thread\n");
04126          pthread_join(glob_mgr->event_handler_thread, NULL);
04127       }
04128      
04129       cb_log(4, 0, "Killing Main Thread\n");
04130       if ( pthread_cancel(glob_mgr->event_thread) == 0 ) {
04131          cb_log(4, 0, "Joining Main Thread\n");
04132          pthread_join(glob_mgr->event_thread, NULL);
04133       }
04134    }
04135   
04136    cb_log(1, 0, "Closing mISDN device\n");
04137    te_lib_destroy(glob_mgr->midev);
04138 }
04139 
04140 char *manager_isdn_get_info(enum event_e event)
04141 {
04142    return isdn_get_info(msgs_g , event, 0);
04143 }
04144 
04145 void manager_bchannel_activate(struct misdn_bchannel *bc)
04146 {
04147    char buf[128];
04148 
04149    struct misdn_stack *stack=get_stack_by_bc(bc);
04150 
04151    if (!stack) {
04152       cb_log(0, bc->port, "bchannel_activate: Stack not found !");
04153       return ;
04154    }
04155    
04156    /* we must activate if we are deactivated */
04157    clear_ibuffer(bc->astbuf);
04158    
04159    cb_log(5, stack->port, "$$$ Bchan Activated addr %x\n", bc->addr);
04160    
04161    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN,  DL_ESTABLISH | REQUEST, 0,0, NULL, TIMEOUT_1SEC);
04162 
04163    return ;
04164 }
04165 
04166 
04167 void manager_bchannel_deactivate(struct misdn_bchannel * bc)
04168 {
04169 
04170    struct misdn_stack *stack=get_stack_by_bc(bc);
04171    iframe_t dact;
04172    char buf[128]; 
04173 
04174    switch (bc->bc_state) {
04175       case BCHAN_ACTIVATED:
04176          break;
04177       case BCHAN_BRIDGED:
04178          misdn_split_conf(bc,bc->conf_id);
04179          break;
04180       default:
04181          cb_log( 4, bc->port,"bchan_deactivate: called but not activated\n");
04182          return ;
04183 
04184    }
04185    
04186    cb_log(5, stack->port, "$$$ Bchan deActivated addr %x\n", bc->addr);
04187    
04188    bc->generate_tone=0;
04189    
04190    dact.prim = DL_RELEASE | REQUEST;
04191    dact.addr = bc->addr | FLG_MSG_DOWN;
04192    dact.dinfo = 0;
04193    dact.len = 0;
04194    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN, DL_RELEASE|REQUEST,0,0,NULL, TIMEOUT_1SEC);
04195 
04196    clear_ibuffer(bc->astbuf);
04197    
04198    bc_state_change(bc,BCHAN_RELEASE);
04199   
04200    return;
04201 }
04202 
04203 
04204 int misdn_lib_tx2misdn_frm(struct misdn_bchannel *bc, void *data, int len)
04205 {
04206    struct misdn_stack *stack=get_stack_by_bc(bc);
04207    char buf[4096 + mISDN_HEADER_LEN];
04208    iframe_t *frm = (iframe_t*)buf;
04209    int r;
04210 
04211    switch (bc->bc_state) {
04212       case BCHAN_ACTIVATED:
04213       case BCHAN_BRIDGED:
04214          break;
04215       default:
04216          cb_log(3, bc->port, "BC not yet activated (state:%s)\n",bc_state2str(bc->bc_state));
04217          return -1;
04218    }
04219    
04220    frm->prim = DL_DATA|REQUEST;
04221    frm->dinfo = 0;
04222    frm->addr = bc->addr | FLG_MSG_DOWN ;
04223    
04224    frm->len = len;
04225    memcpy(&buf[mISDN_HEADER_LEN], data,len);
04226       
04227    if ( misdn_cap_is_speech(bc->capability) ) 
04228       flip_buf_bits( &buf[mISDN_HEADER_LEN], len);
04229    else
04230       cb_log(6, stack->port, "Writing %d data bytes\n",len);
04231    
04232    cb_log(9, stack->port, "Writing %d bytes 2 mISDN\n",len);
04233    r=mISDN_write(stack->midev, buf, frm->len + mISDN_HEADER_LEN, TIMEOUT_INFINIT);
04234    return 0;
04235 }
04236 
04237 
04238 
04239 /*
04240  * send control information to the channel (dsp-module)
04241  */
04242 void manager_ph_control(struct misdn_bchannel *bc, int c1, int c2)
04243 {
04244    unsigned char buffer[mISDN_HEADER_LEN+2*sizeof(int)];
04245    iframe_t *ctrl = (iframe_t *)buffer; /* preload data */
04246    unsigned int *d = (unsigned int*)&ctrl->data.p;
04247    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04248    
04249    cb_log(4,bc->port,"ph_control: c1:%x c2:%x\n",c1,c2);
04250    
04251    ctrl->prim = PH_CONTROL | REQUEST;
04252    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04253    ctrl->dinfo = 0;
04254    ctrl->len = sizeof(unsigned int)*2;
04255    *d++ = c1;
04256    *d++ = c2;
04257    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04258 }
04259 
04260 /*
04261  * allow live control of channel parameters
04262  */
04263 void isdn_lib_update_rxgain (struct misdn_bchannel *bc)
04264 {
04265    manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
04266 }
04267 
04268 void isdn_lib_update_txgain (struct misdn_bchannel *bc)
04269 {
04270    manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
04271 }
04272 
04273 void isdn_lib_update_ec (struct misdn_bchannel *bc)
04274 {
04275 #ifdef MISDN_1_2
04276    if (*bc->pipeline)
04277 #else
04278    if (bc->ec_enable)
04279 #endif
04280       manager_ec_enable(bc);
04281    else
04282       manager_ec_disable(bc);
04283 }
04284 
04285 void isdn_lib_stop_dtmf (struct misdn_bchannel *bc)
04286 {
04287    manager_ph_control(bc, DTMF_TONE_STOP, 0);
04288 }
04289 
04290 /*
04291  * send control information to the channel (dsp-module)
04292  */
04293 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len)
04294 {
04295    unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
04296    iframe_t *ctrl = (iframe_t *)buffer;
04297    unsigned int *d = (unsigned int *)&ctrl->data.p;
04298    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04299    
04300    ctrl->prim = PH_CONTROL | REQUEST;
04301    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04302    ctrl->dinfo = 0;
04303    ctrl->len = sizeof(unsigned int) + c2_len;
04304    *d++ = c1;
04305    memcpy(d, c2, c2_len);
04306    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04307 }
04308 
04309 
04310 
04311 
04312 void manager_clean_bc(struct misdn_bchannel *bc )
04313 {
04314    struct misdn_stack *stack=get_stack_by_bc(bc);
04315    
04316    if (bc->channel>0)
04317       empty_chan_in_stack(stack, bc->channel);
04318    empty_bc(bc);
04319    bc->in_use=0;
04320 
04321    cb_event(EVENT_CLEANUP, bc, NULL); 
04322 }
04323 
04324 
04325 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder)
04326 {
04327    struct misdn_bchannel *help;
04328    cb_log(4,stack->port, "*HOLDER: add %x\n",holder->l3_id);
04329    
04330    holder->stack_holder=1;
04331 
04332    if (!stack ) return ;
04333    
04334    holder->next=NULL;
04335    
04336    if (!stack->holding) {
04337       stack->holding = holder;
04338       return;
04339    }
04340   
04341    for (help=stack->holding;
04342         help;
04343         help=help->next) {
04344       if (!help->next) {
04345          help->next=holder;
04346          break;
04347       }
04348    }
04349   
04350 }
04351 
04352 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder)
04353 {
04354    struct misdn_bchannel *h1;
04355 
04356    if (!holder->stack_holder) return;
04357    
04358    holder->stack_holder=0;
04359    
04360    cb_log(4,stack->port, "*HOLDER: remove %x\n",holder->l3_id);
04361    if (!stack || ! stack->holding) return;
04362   
04363    if (holder == stack->holding) {
04364       stack->holding = stack->holding->next;
04365       return;
04366    }
04367    
04368    for (h1=stack->holding;
04369         h1;
04370         h1=h1->next) {
04371       if (h1->next == holder) {
04372          h1->next=h1->next->next;
04373          return ;
04374       }
04375    }
04376 }
04377 
04378 struct misdn_bchannel *stack_holder_find_bychan(struct misdn_stack *stack, int chan)
04379 {
04380    struct misdn_bchannel *help;
04381 
04382    cb_log(4,stack?stack->port:0, "*HOLDER: find_bychan %c\n", chan);
04383    
04384    if (!stack) return NULL;
04385    
04386    for (help=stack->holding;
04387         help;
04388         help=help->next) {
04389       if (help->channel == chan) {
04390          cb_log(4,stack->port, "*HOLDER: found_bychan bc\n");
04391          return help;
04392       }
04393    }
04394 
04395    cb_log(4,stack->port, "*HOLDER: find_bychan nothing\n");
04396    return NULL;
04397 
04398 }
04399 
04400 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id)
04401 {
04402    struct misdn_bchannel *help;
04403 
04404    cb_log(4,stack?stack->port:0, "*HOLDER: find %lx\n",l3id);
04405    
04406    if (!stack) return NULL;
04407    
04408    for (help=stack->holding;
04409         help;
04410         help=help->next) {
04411       if (help->l3_id == l3id) {
04412          cb_log(4,stack->port, "*HOLDER: found bc\n");
04413          return help;
04414       }
04415    }
04416 
04417    cb_log(4,stack->port, "*HOLDER: find nothing\n");
04418    return NULL;
04419 }
04420 
04421 
04422 
04423 void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone) 
04424 {
04425    char buf[mISDN_HEADER_LEN + 128] = "";
04426    iframe_t *frm = (iframe_t*)buf;
04427 
04428    switch(tone) {
04429    case TONE_DIAL:
04430       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_DIALTONE); 
04431    break;
04432    
04433    case TONE_ALERTING:
04434       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_RINGING);  
04435    break;
04436    
04437    case TONE_HANGUP:
04438       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_HANGUP);   
04439    break;
04440 
04441    case TONE_NONE:
04442    default:
04443       manager_ph_control(bc, TONE_PATT_OFF, TONE_GERMAN_HANGUP);  
04444    }
04445 
04446    frm->prim=DL_DATA|REQUEST;
04447    frm->addr=bc->addr|FLG_MSG_DOWN;
04448    frm->dinfo=0;
04449    frm->len=128;
04450    
04451    mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
04452 }
04453 
04454 
04455 void manager_ec_enable(struct misdn_bchannel *bc)
04456 {
04457    struct misdn_stack *stack=get_stack_by_bc(bc);
04458    
04459    cb_log(4, stack?stack->port:0,"ec_enable\n");
04460 
04461    if (!misdn_cap_is_speech(bc->capability)) {
04462       cb_log(1, stack?stack->port:0, " --> no speech? cannot enable EC\n");
04463    } else {
04464 
04465 #ifdef MISDN_1_2
04466    if (*bc->pipeline) {
04467       cb_log(3, stack?stack->port:0,"Sending Control PIPELINE_CFG %s\n",bc->pipeline);
04468       manager_ph_control_block(bc, PIPELINE_CFG, bc->pipeline, strlen(bc->pipeline) + 1);
04469    }
04470 #else
04471    int ec_arr[2];
04472 
04473    if (bc->ec_enable) {
04474       cb_log(3, stack?stack->port:0,"Sending Control ECHOCAN_ON taps:%d\n",bc->ec_deftaps);
04475    
04476       switch (bc->ec_deftaps) {
04477       case 4:
04478       case 8:
04479       case 16:
04480       case 32:
04481       case 64:
04482       case 128:
04483       case 256:
04484       case 512:
04485       case 1024:
04486          cb_log(4, stack->port, "Taps is %d\n",bc->ec_deftaps);
04487          break;
04488       default:
04489          cb_log(0, stack->port, "Taps should be power of 2\n");
04490          bc->ec_deftaps=128;
04491       }
04492    
04493       ec_arr[0]=bc->ec_deftaps;
04494       ec_arr[1]=0;
04495       
04496       manager_ph_control_block(bc,  ECHOCAN_ON,  ec_arr, sizeof(ec_arr));
04497    }
04498 #endif
04499    }
04500 }
04501 
04502 
04503 
04504 void manager_ec_disable(struct misdn_bchannel *bc)
04505 {
04506    struct misdn_stack *stack=get_stack_by_bc(bc);
04507    
04508    cb_log(4, stack?stack->port:0," --> ec_disable\n");
04509 
04510    if (!misdn_cap_is_speech(bc->capability)) {
04511       cb_log(1, stack?stack->port:0, " --> no speech? cannot disable EC\n");
04512       return;
04513    }
04514 
04515 #ifdef MISDN_1_2
04516    manager_ph_control_block(bc, PIPELINE_CFG, "", 0);
04517 #else
04518    if ( ! bc->ec_enable) {
04519       cb_log(3, stack?stack->port:0, "Sending Control ECHOCAN_OFF\n");
04520       manager_ph_control(bc,  ECHOCAN_OFF, 0);
04521    }
04522 #endif
04523 }
04524 
04525 struct misdn_stack* get_misdn_stack() {
04526    return glob_mgr->stack_list;
04527 }
04528 
04529 
04530 
04531 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id)
04532 {
04533    char data[16] = "";
04534 
04535    bc_state_change(bc,BCHAN_BRIDGED);
04536    manager_ph_control(bc, CMX_RECEIVE_OFF, 0);
04537    manager_ph_control(bc, CMX_CONF_JOIN, conf_id);
04538 
04539    cb_log(3,bc->port, "Joining bc:%x in conf:%d\n",bc->addr,conf_id);
04540 
04541    misdn_lib_tx2misdn_frm(bc, data, sizeof(data) - 1);
04542 }
04543 
04544 
04545 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id)
04546 {
04547    bc_state_change(bc,BCHAN_ACTIVATED);
04548    manager_ph_control(bc, CMX_RECEIVE_ON, 0);
04549    manager_ph_control(bc, CMX_CONF_SPLIT, conf_id);
04550 
04551    cb_log(4,bc->port, "Splitting bc:%x in conf:%d\n",bc->addr,conf_id);
04552 }
04553 
04554 void misdn_lib_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2) {
04555    int conf_id = bc1->pid + 1;
04556    struct misdn_bchannel *bc_list[] = { bc1, bc2, NULL };
04557    struct misdn_bchannel **bc;
04558 
04559    cb_log(4, bc1->port, "I Send: BRIDGE from:%d to:%d\n",bc1->port,bc2->port);
04560 
04561    for (bc=bc_list; *bc;  bc++) { 
04562       (*bc)->conf_id=conf_id;
04563       cb_log(4, (*bc)->port, " --> bc_addr:%x\n",(*bc)->addr);
04564    
04565       switch((*bc)->bc_state) {
04566          case BCHAN_ACTIVATED:
04567             misdn_join_conf(*bc,conf_id);
04568             break;
04569          default:
04570             bc_next_state_change(*bc,BCHAN_BRIDGED);
04571             break;
04572       }
04573    }
04574 }
04575 
04576 void misdn_lib_split_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2)
04577 {
04578 
04579    struct misdn_bchannel *bc_list[]={
04580       bc1,bc2,NULL
04581    };
04582    struct misdn_bchannel **bc;
04583       
04584    for (bc=bc_list; *bc;  bc++) { 
04585       if ( (*bc)->bc_state == BCHAN_BRIDGED){
04586          misdn_split_conf( *bc, (*bc)->conf_id);
04587       } else {
04588          cb_log( 2, (*bc)->port, "BC not bridged (state:%s) so not splitting it\n",bc_state2str((*bc)->bc_state));
04589       }
04590    }
04591    
04592 }
04593 
04594 
04595 
04596 void misdn_lib_echo(struct misdn_bchannel *bc, int onoff)
04597 {
04598    cb_log(3,bc->port, " --> ECHO %s\n", onoff?"ON":"OFF");
04599    manager_ph_control(bc, onoff?CMX_ECHO_ON:CMX_ECHO_OFF, 0);
04600 }
04601 
04602 
04603 
04604 void misdn_lib_reinit_nt_stack(int port)
04605 {
04606    struct misdn_stack *stack=find_stack_by_port(port);
04607    
04608    if (stack) {
04609       stack->l2link=0;
04610       stack->blocked=0;
04611    
04612       cleanup_Isdnl3(&stack->nst);
04613       cleanup_Isdnl2(&stack->nst);
04614 
04615 
04616       memset(&stack->nst, 0, sizeof(net_stack_t));
04617       memset(&stack->mgr, 0, sizeof(manager_t));
04618    
04619       stack->mgr.nst = &stack->nst;
04620       stack->nst.manager = &stack->mgr;
04621     
04622       stack->nst.l3_manager = handle_event_nt;
04623       stack->nst.device = glob_mgr->midev;
04624       stack->nst.cardnr = port;
04625       stack->nst.d_stid = stack->d_stid;
04626    
04627       stack->nst.feature = FEATURE_NET_HOLD;
04628       if (stack->ptp)
04629          stack->nst.feature |= FEATURE_NET_PTP;
04630       if (stack->pri)
04631          stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
04632       
04633       stack->nst.l1_id = stack->lower_id;
04634       stack->nst.l2_id = stack->upper_id;
04635       
04636       msg_queue_init(&stack->nst.down_queue);
04637    
04638       Isdnl2Init(&stack->nst);
04639       Isdnl3Init(&stack->nst);
04640 
04641       if (!stack->ptp)
04642          misdn_lib_get_l1_up(stack);
04643       misdn_lib_get_l2_up(stack);
04644    }
04645 }
04646 
04647 

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