Thu Oct 8 00:59:05 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 /* 
00029  * Define ARRAY_LEN() because I cannot
00030  * #include "asterisk/utils.h"
00031  */
00032 #define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
00033 
00034 #include "asterisk/causes.h"
00035 
00036 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id);
00037 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id);
00038 
00039 int queue_cleanup_bc(struct misdn_bchannel *bc) ;
00040 
00041 int misdn_lib_get_l2_up(struct misdn_stack *stack);
00042 
00043 struct misdn_stack* get_misdn_stack( void );
00044 
00045 static int set_chan_in_stack(struct misdn_stack *stack, int channel);
00046 
00047 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh);
00048 
00049 int misdn_lib_port_is_pri(int port)
00050 {
00051    struct misdn_stack *stack=get_misdn_stack();
00052    for ( ; stack; stack=stack->next) {
00053       if (stack->port == port) {
00054          return stack->pri;
00055       }
00056    }
00057    
00058    return -1;
00059 }
00060 
00061 static void misdn_make_dummy(struct misdn_bchannel *dummybc, int port, int l3id, int nt, int channel) 
00062 {
00063    memset (dummybc,0,sizeof(struct misdn_bchannel));
00064    dummybc->port=port;
00065    dummybc->l3_id=l3id;
00066    dummybc->nt=nt;
00067    dummybc->dummy=1;
00068    dummybc->channel=channel;
00069 }
00070 
00071 int misdn_lib_port_block(int port)
00072 {
00073    struct misdn_stack *stack=get_misdn_stack();
00074    for ( ; stack; stack=stack->next) {
00075       if (stack->port == port) {
00076          stack->blocked=1;
00077          return 0;
00078       }
00079    }
00080    return -1;
00081 
00082 }
00083 
00084 int misdn_lib_port_unblock(int port)
00085 {
00086    struct misdn_stack *stack=get_misdn_stack();
00087    for ( ; stack; stack=stack->next) {
00088       if (stack->port == port) {
00089          stack->blocked=0;
00090          return 0;
00091       }
00092    }
00093    return -1;
00094 
00095 }
00096 
00097 int misdn_lib_is_port_blocked(int port)
00098 {  
00099    struct misdn_stack *stack=get_misdn_stack();
00100    for ( ; stack; stack=stack->next) {
00101       if (stack->port == port) {
00102          return stack->blocked;
00103       }
00104    }
00105    return -1;
00106 }
00107 
00108 int misdn_lib_is_ptp(int port)
00109 {
00110    struct misdn_stack *stack=get_misdn_stack();
00111    for ( ; stack; stack=stack->next) {
00112       if (stack->port == port) return stack->ptp;
00113    }
00114    return -1;
00115 }
00116 
00117 int misdn_lib_get_maxchans(int port) 
00118 {
00119    struct misdn_stack *stack=get_misdn_stack();
00120    for ( ; stack; stack=stack->next) {
00121       if (stack->port == port) {
00122          if (stack->pri) 
00123             return 30;
00124          else
00125             return 2;
00126       }
00127    }
00128    return -1;
00129 }
00130 
00131 
00132 struct misdn_stack *get_stack_by_bc(struct misdn_bchannel *bc)
00133 {
00134    struct misdn_stack *stack = get_misdn_stack();
00135 
00136    if (!bc)
00137       return NULL;
00138    
00139    for ( ; stack; stack = stack->next) {
00140       if (bc->port == stack->port)
00141          return stack;
00142    }
00143 
00144    return NULL;
00145 }
00146 
00147 
00148 void get_show_stack_details(int port, char *buf)
00149 {
00150    struct misdn_stack *stack=get_misdn_stack();
00151    
00152    for ( ; stack; stack=stack->next) {
00153       if (stack->port == port) break;
00154    }
00155    
00156    if (stack) {
00157       sprintf(buf, "* Port %d Type %s Prot. %s L2Link %s L1Link:%s Blocked:%d",
00158          stack->port, stack->nt ? "NT" : "TE", stack->ptp ? "PTP" : "PMP",
00159          stack->l2link ? "UP" : "DOWN", stack->l1link ? "UP" : "DOWN",
00160          stack->blocked);
00161    } else {
00162       buf[0]=0;
00163    }
00164 }
00165 
00166 
00167 static int nt_err_cnt =0 ;
00168 
00169 enum global_states {
00170    MISDN_INITIALIZING,
00171    MISDN_INITIALIZED
00172 } ;
00173 
00174 static enum global_states  global_state=MISDN_INITIALIZING;
00175 
00176 
00177 #include <mISDNuser/net_l2.h>
00178 #include <mISDNuser/tone.h>
00179 #include <unistd.h>
00180 #include <semaphore.h>
00181 #include <pthread.h>
00182 #include <signal.h>
00183 
00184 #include "isdn_lib.h"
00185 
00186 
00187 struct misdn_lib {
00188    /*! \brief mISDN device handle returned by mISDN_open() */
00189    int midev;
00190    int midev_nt;  /* Not used */
00191 
00192    pthread_t event_thread;
00193    pthread_t event_handler_thread;
00194 
00195    void *user_data;
00196 
00197    msg_queue_t upqueue;
00198    msg_queue_t activatequeue; 
00199   
00200    sem_t new_msg;
00201   
00202    struct misdn_stack *stack_list;
00203 } ;
00204 
00205 #ifndef ECHOCAN_ON
00206 #define ECHOCAN_ON 123
00207 #define ECHOCAN_OFF 124
00208 #endif
00209 
00210 #define MISDN_DEBUG 0
00211 
00212 void misdn_tx_jitter(struct misdn_bchannel *bc, int len);
00213 
00214 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id);
00215 
00216 struct misdn_bchannel *find_bc_by_confid(unsigned long confid);
00217 
00218 struct misdn_bchannel *stack_holder_find_bychan(struct misdn_stack *stack, int chan);
00219 
00220 int setup_bc(struct misdn_bchannel *bc);
00221 
00222 int manager_isdn_handler(iframe_t *frm ,msg_t *msg);
00223 
00224 int misdn_lib_port_restart(int port);
00225 int misdn_lib_pid_restart(int pid);
00226 
00227 extern struct isdn_msg msgs_g[]; 
00228 
00229 #define ISDN_PID_L3_B_USER 0x430000ff
00230 #define ISDN_PID_L4_B_USER 0x440000ff
00231 
00232 /* #define MISDN_IBUF_SIZE 1024 */
00233 #define MISDN_IBUF_SIZE 512
00234 
00235 /*  Fine Tuning of Inband  Signalling time */
00236 #define TONE_ALERT_CNT 41 /*  1 Sec  */
00237 #define TONE_ALERT_SILENCE_CNT 200 /*  4 Sec */
00238 
00239 #define TONE_BUSY_CNT 20 /*  ? */
00240 #define TONE_BUSY_SILENCE_CNT 48 /*  ? */
00241 
00242 static int  entity;
00243 
00244 static struct misdn_lib *glob_mgr;
00245 
00246 char tone_425_flip[TONE_425_SIZE];
00247 char tone_silence_flip[TONE_SILENCE_SIZE];
00248 
00249 static void misdn_lib_isdn_event_catcher(void *arg);
00250 static int handle_event_nt(void *dat, void *arg);
00251 
00252 
00253 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder);
00254 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder);
00255 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id);
00256 
00257 /* from isdn_lib.h */
00258    /* user iface */
00259 int te_lib_init( void ) ; /* returns midev */
00260 void te_lib_destroy(int midev) ;
00261 struct misdn_bchannel *manager_find_bc_by_pid(int pid);
00262 struct misdn_bchannel *manager_find_bc_holded(struct misdn_bchannel* bc);
00263 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len);
00264 void manager_clean_bc(struct misdn_bchannel *bc );
00265 void manager_bchannel_setup (struct misdn_bchannel *bc);
00266 void manager_bchannel_cleanup (struct misdn_bchannel *bc);
00267 
00268 void ec_chunk( struct misdn_bchannel *bc, unsigned char *rxchunk, unsigned char *txchunk, int chunk_size);
00269    /* end */
00270 int bchdev_echocancel_activate(struct misdn_bchannel* dev);
00271 void bchdev_echocancel_deactivate(struct misdn_bchannel* dev);
00272 /* end */
00273 
00274 
00275 static char *bearer2str(int cap) {
00276    static char *bearers[]={
00277       "Speech",
00278       "Audio 3.1k",
00279       "Unres Digital",
00280       "Res Digital",
00281       "Unknown Bearer"
00282    };
00283    
00284    switch (cap) {
00285    case INFO_CAPABILITY_SPEECH:
00286       return bearers[0];
00287       break;
00288    case INFO_CAPABILITY_AUDIO_3_1K:
00289       return bearers[1];
00290       break;
00291    case INFO_CAPABILITY_DIGITAL_UNRESTRICTED:
00292       return bearers[2];
00293       break;
00294    case INFO_CAPABILITY_DIGITAL_RESTRICTED:
00295       return bearers[3];
00296       break;
00297    default:
00298       return bearers[4];
00299       break;
00300    }
00301 }
00302 
00303 
00304 static char flip_table[256];
00305 
00306 static void init_flip_bits(void)
00307 {
00308    int i,k;
00309    
00310    for (i = 0 ; i < 256 ; i++) {
00311       unsigned char sample = 0 ;
00312       for (k = 0; k<8; k++) {
00313          if ( i & 1 << k ) sample |= 0x80 >>  k;
00314       }
00315       flip_table[i] = sample;
00316    }
00317 }
00318 
00319 static char * flip_buf_bits ( char * buf , int len)
00320 {
00321    int i;
00322    char * start = buf;
00323    
00324    for (i = 0 ; i < len; i++) {
00325       buf[i] = flip_table[(unsigned char)buf[i]];
00326    }
00327    
00328    return start;
00329 }
00330 
00331 
00332 
00333 
00334 static msg_t *create_l2msg(int prim, int dinfo, int size) /* NT only */
00335 {
00336    int i = 0;
00337    msg_t *dmsg;
00338   
00339    while(i < 10)
00340    {
00341       dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00342       if (dmsg)
00343          return(dmsg);
00344       
00345       if (!i)
00346          printf("cannot allocate memory, trying again...\n");
00347       i++;
00348       usleep(300000);
00349    }
00350    printf("cannot allocate memory, system overloaded.\n");
00351    exit(-1);
00352 }
00353 
00354 
00355 
00356 msg_t *create_l3msg(int prim, int mt, int dinfo, int size, int ntmode)
00357 {
00358    int i = 0;
00359    msg_t *dmsg;
00360    Q931_info_t *qi;
00361    iframe_t *frm;
00362   
00363    if (!ntmode)
00364       size = sizeof(Q931_info_t)+2;
00365   
00366    while(i < 10) {
00367       if (ntmode) {
00368          dmsg = prep_l3data_msg(prim, dinfo, size, 256, NULL);
00369          if (dmsg) {
00370             return(dmsg);
00371          }
00372       } else {
00373          dmsg = alloc_msg(size+256+mISDN_HEADER_LEN+DEFAULT_HEADROOM);
00374          if (dmsg)
00375          {
00376             memset(msg_put(dmsg,size+mISDN_HEADER_LEN), 0, size+mISDN_HEADER_LEN);
00377             frm = (iframe_t *)dmsg->data;
00378             frm->prim = prim;
00379             frm->dinfo = dinfo;
00380             qi = (Q931_info_t *)(dmsg->data + mISDN_HEADER_LEN);
00381             qi->type = mt;
00382             return(dmsg);
00383          }
00384       }
00385     
00386       if (!i) printf("cannot allocate memory, trying again...\n");
00387       i++;
00388       usleep(300000);
00389    }
00390    printf("cannot allocate memory, system overloaded.\n");
00391    exit(-1);
00392 }
00393 
00394 
00395 static int send_msg (int midev, struct misdn_bchannel *bc, msg_t *dmsg)
00396 {
00397    iframe_t *frm = (iframe_t *)dmsg->data;
00398    struct misdn_stack *stack=get_stack_by_bc(bc);
00399 
00400    if (!stack) {
00401       cb_log(0,bc->port,"send_msg: IEK!! no stack\n ");
00402       return -1;
00403    }
00404    
00405    frm->addr = (stack->upper_id | FLG_MSG_DOWN);
00406    frm->dinfo = bc->l3_id;
00407    frm->len = (dmsg->len) - mISDN_HEADER_LEN;
00408             
00409    cb_log(4,stack->port,"Sending msg, prim:%x addr:%x dinfo:%x\n",frm->prim,frm->addr,frm->dinfo);
00410 
00411    mISDN_write(midev, dmsg->data, dmsg->len, TIMEOUT_1SEC);
00412    free_msg(dmsg);
00413 
00414    return 0;
00415 }
00416 
00417 
00418 static int mypid=1;
00419 
00420 
00421 int misdn_cap_is_speech(int cap)
00422 /** Poor mans version **/
00423 {
00424    if ( (cap != INFO_CAPABILITY_DIGITAL_UNRESTRICTED) &&
00425         (cap != INFO_CAPABILITY_DIGITAL_RESTRICTED) ) return 1;
00426    return 0;
00427 }
00428 
00429 int misdn_inband_avail(struct misdn_bchannel *bc)
00430 {
00431 
00432    if (!bc->early_bconnect) {
00433       /* We have opted to never receive any available inband recorded messages */
00434       return 0;
00435    }
00436    
00437    switch (bc->progress_indicator) {
00438    case INFO_PI_INBAND_AVAILABLE:
00439    case INFO_PI_CALL_NOT_E2E_ISDN:
00440    case INFO_PI_CALLED_NOT_ISDN:
00441       return 1;
00442    default:
00443       return 0;
00444    }
00445    return 0;
00446 }
00447 
00448 
00449 static void dump_chan_list(struct misdn_stack *stack)
00450 {
00451    int i;
00452 
00453    for (i=0; i <= stack->b_num; i++) {
00454       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);
00455    }
00456 }
00457 
00458 
00459 void misdn_dump_chanlist()
00460 {
00461    struct misdn_stack *stack=get_misdn_stack();
00462    for ( ; stack; stack=stack->next) {
00463       dump_chan_list(stack);
00464    }
00465 
00466 }
00467 
00468 int set_chan_in_stack(struct misdn_stack *stack, int channel)
00469 {
00470 
00471    cb_log(4,stack->port,"set_chan_in_stack: %d\n",channel);
00472    dump_chan_list(stack);
00473    if (channel >=1 && channel <= MAX_BCHANS) {
00474       if (!stack->channels[channel-1])
00475          stack->channels[channel-1] = 1;
00476       else {
00477          cb_log(4,stack->port,"channel already in use:%d\n", channel );
00478          return -1;
00479       }
00480    } else {
00481       cb_log(0,stack->port,"couldn't set channel %d in\n", channel );
00482       return -1;
00483    }
00484   
00485    return 0;
00486 }
00487 
00488 
00489 
00490 static int find_free_chan_in_stack(struct misdn_stack *stack, struct misdn_bchannel *bc, int channel, int dec)
00491 {
00492    int i;
00493    int chan=0;
00494    int bnums = stack->pri ? stack->b_num : stack->b_num - 1;
00495 
00496    if (bc->channel_found)  
00497       return 0;
00498    
00499    bc->channel_found=1;
00500 
00501    cb_log(5,stack->port,"find_free_chan: req_chan:%d\n",channel);
00502 
00503    if (channel < 0 || channel > MAX_BCHANS) {
00504       cb_log(0, stack->port, " !! out of bound call to find_free_chan_in_stack! (ch:%d)\n", channel);
00505       return 0;
00506    }
00507    
00508    channel--;
00509 
00510    if (dec) {
00511       for (i = bnums; i >=0; i--) {
00512          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 D channel ;) and work with chan preselection */
00513             if (!stack->channels[i]) {
00514                cb_log (3, stack->port, " --> found chan%s: %d\n", channel>=0?" (preselected)":"", i+1);
00515                chan=i+1;
00516                break;
00517             }
00518          }
00519       }
00520    } else {
00521       for (i = 0; i <= bnums; i++) {
00522          if (i != 15 && (channel < 0 || i == channel)) { /* skip E1 D channel ;) and work with chan preselection */
00523             if (!stack->channels[i]) {
00524                cb_log (3, stack->port, " --> found chan%s: %d\n", channel>=0?" (preselected)":"", i+1);
00525                chan=i+1;
00526                break;
00527             }
00528          }
00529       }
00530    }
00531 
00532    if (!chan) {
00533       cb_log (1, stack->port, " !! NO FREE CHAN IN STACK\n");
00534       dump_chan_list(stack);
00535       bc->out_cause = AST_CAUSE_NORMAL_CIRCUIT_CONGESTION;
00536       return -1;
00537    }  
00538 
00539    if (set_chan_in_stack(stack, chan)<0) {
00540       cb_log (0, stack->port, "Channel Already in use:%d\n", chan);
00541       bc->out_cause = AST_CAUSE_REQUESTED_CHAN_UNAVAIL;
00542       return -1;
00543    }
00544 
00545    bc->channel=chan;
00546    return 0;
00547 }
00548 
00549 static int empty_chan_in_stack(struct misdn_stack *stack, int channel)
00550 {
00551    if (channel<=0 || channel>MAX_BCHANS) {
00552       cb_log(0,stack?stack->port:0, "empty_chan_in_stack: cannot empty channel %d\n",channel);
00553       return -1;
00554    }
00555    
00556    cb_log (4, stack?stack->port:0, "empty_chan_in_stack: %d\n",channel); 
00557    stack->channels[channel-1] = 0;
00558    dump_chan_list(stack);
00559    return 0;
00560 }
00561 
00562 char *bc_state2str(enum bchannel_state state) {
00563    int i;
00564    
00565    struct bchan_state_s {
00566       char *n;
00567       enum bchannel_state s;
00568    } states[] = {
00569       {"BCHAN_CLEANED", BCHAN_CLEANED },
00570       {"BCHAN_EMPTY", BCHAN_EMPTY},
00571       {"BCHAN_SETUP", BCHAN_SETUP},
00572       {"BCHAN_SETUPED", BCHAN_SETUPED},
00573       {"BCHAN_ACTIVE", BCHAN_ACTIVE},
00574       {"BCHAN_ACTIVATED", BCHAN_ACTIVATED},
00575       {"BCHAN_BRIDGE",  BCHAN_BRIDGE},
00576       {"BCHAN_BRIDGED", BCHAN_BRIDGED},
00577       {"BCHAN_RELEASE", BCHAN_RELEASE},
00578       {"BCHAN_RELEASED", BCHAN_RELEASED},
00579       {"BCHAN_CLEAN", BCHAN_CLEAN},
00580       {"BCHAN_CLEAN_REQUEST", BCHAN_CLEAN_REQUEST},
00581       {"BCHAN_ERROR", BCHAN_ERROR}
00582    };
00583    
00584    for (i=0; i< sizeof(states)/sizeof(struct bchan_state_s); i++)
00585       if ( states[i].s == state)
00586          return states[i].n;
00587 
00588    return "UNKNOWN";
00589 }
00590 
00591 void bc_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00592 {
00593    cb_log(5,bc->port,"BC_STATE_CHANGE: l3id:%x from:%s to:%s\n",
00594       bc->l3_id,
00595           bc_state2str(bc->bc_state),
00596           bc_state2str(state) );
00597    
00598    switch (state) {
00599       case BCHAN_ACTIVATED:
00600          if (bc->next_bc_state ==  BCHAN_BRIDGED) {
00601             misdn_join_conf(bc, bc->conf_id);
00602             bc->next_bc_state = BCHAN_EMPTY;
00603             return;
00604          }
00605       default:
00606          bc->bc_state=state;
00607          break;
00608    }
00609 }
00610 
00611 static void bc_next_state_change(struct misdn_bchannel *bc, enum bchannel_state state)
00612 {
00613    cb_log(5,bc->port,"BC_NEXT_STATE_CHANGE: from:%s to:%s\n",
00614           bc_state2str(bc->next_bc_state),
00615           bc_state2str(state) );
00616 
00617    bc->next_bc_state=state;
00618 }
00619 
00620 
00621 static void empty_bc(struct misdn_bchannel *bc)
00622 {
00623    bc->dummy=0;
00624 
00625    bc->bframe_len=0;
00626 
00627    bc->cw= 0;
00628 
00629    bc->dec=0;
00630    bc->channel = 0;
00631 
00632    bc->sending_complete = 0;
00633 
00634    bc->restart_channel=0;
00635    
00636    bc->conf_id = 0;
00637 
00638    bc->need_more_infos = 0;
00639    
00640    bc->send_dtmf=0;
00641    bc->nodsp=0;
00642    bc->nojitter=0;
00643 
00644    bc->time_usec=0;
00645    
00646    bc->rxgain=0;
00647    bc->txgain=0;
00648 
00649    bc->crypt=0;
00650    bc->curptx=0; bc->curprx=0;
00651    
00652    bc->crypt_key[0] = 0;
00653    
00654    bc->generate_tone=0;
00655    bc->tone_cnt=0;
00656   
00657    bc->dnumplan=NUMPLAN_UNKNOWN;
00658    bc->onumplan=NUMPLAN_UNKNOWN;
00659    bc->rnumplan=NUMPLAN_UNKNOWN;
00660    bc->cpnnumplan=NUMPLAN_UNKNOWN;
00661    
00662 
00663    bc->active = 0;
00664 
00665    bc->early_bconnect = 1;
00666    
00667 #ifdef MISDN_1_2
00668    *bc->pipeline = 0;
00669 #else
00670    bc->ec_enable = 0;
00671    bc->ec_deftaps = 128;
00672 #endif
00673 
00674    bc->orig=0;
00675   
00676    bc->cause = AST_CAUSE_NORMAL_CLEARING;
00677    bc->out_cause = AST_CAUSE_NORMAL_CLEARING;
00678    bc->pres = 0;  /* allowed */
00679    
00680    bc->evq=EVENT_NOTHING;
00681 
00682    bc->progress_coding=0;
00683    bc->progress_location=0;
00684    bc->progress_indicator=0;
00685    
00686 /** Set Default Bearer Caps **/
00687    bc->capability=INFO_CAPABILITY_SPEECH;
00688    bc->law=INFO_CODEC_ALAW;
00689    bc->mode=0;
00690    bc->rate=0x10;
00691    bc->user1=0;
00692    bc->urate=0;
00693    
00694    bc->hdlc=0;
00695    
00696    
00697    bc->info_dad[0] = 0;
00698    bc->display[0] = 0;
00699    bc->infos_pending[0] = 0;
00700    bc->cad[0] = 0;
00701    bc->oad[0] = 0;
00702    bc->dad[0] = 0;
00703    bc->rad[0] = 0;
00704    bc->orig_dad[0] = 0;
00705    bc->uu[0]=0;
00706    bc->uulen=0;
00707    
00708    bc->fac_in.Function = Fac_None;
00709    bc->fac_out.Function = Fac_None;
00710    
00711    bc->te_choose_channel = 0;
00712    bc->channel_found= 0;
00713 
00714    gettimeofday(&bc->last_used, NULL);
00715 }
00716 
00717 
00718 static int clean_up_bc(struct misdn_bchannel *bc)
00719 {
00720    int ret=0;
00721    unsigned char buff[32];
00722    struct misdn_stack * stack;
00723 
00724    cb_log(3, bc?bc->port:0, "$$$ CLEANUP CALLED pid:%d\n", bc?bc->pid:-1);
00725    
00726    if (!bc  ) return -1;
00727    stack=get_stack_by_bc(bc);
00728    
00729    if (!stack) return -1;
00730    
00731    switch (bc->bc_state ) {
00732    case BCHAN_CLEANED:
00733       cb_log(5, stack->port, "$$$ Already cleaned up bc with stid :%x\n", bc->b_stid);
00734       return -1;
00735       
00736    default:
00737       break;
00738    }
00739    
00740    cb_log(2, stack->port, "$$$ Cleaning up bc with stid :%x pid:%d\n", bc->b_stid, bc->pid);
00741    
00742    manager_ec_disable(bc);
00743 
00744    manager_bchannel_deactivate(bc);
00745 
00746    mISDN_write_frame(stack->midev, buff, bc->layer_id|FLG_MSG_TARGET|FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
00747    
00748    bc->b_stid = 0;
00749    bc_state_change(bc, BCHAN_CLEANED);
00750    
00751    return ret;
00752 }
00753 
00754 
00755 
00756 static void clear_l3(struct misdn_stack *stack)
00757 {
00758    int i;
00759 
00760    for (i=0; i<=stack->b_num; i++) {
00761       if (global_state == MISDN_INITIALIZED)  {
00762          cb_event(EVENT_CLEANUP, &stack->bc[i], NULL); 
00763          empty_chan_in_stack(stack,i+1);
00764          empty_bc(&stack->bc[i]);
00765          clean_up_bc(&stack->bc[i]);
00766          stack->bc[i].in_use = 0;
00767       }
00768       
00769    } 
00770 }
00771 
00772 static int new_te_id = 0;
00773 
00774 #define MAXPROCS 0x100
00775 
00776 static int misdn_lib_get_l1_down(struct misdn_stack *stack)
00777 {
00778    /* Pull Up L1 */ 
00779    iframe_t act;
00780    act.prim = PH_DEACTIVATE | REQUEST; 
00781    act.addr = stack->lower_id|FLG_MSG_DOWN;
00782    act.dinfo = 0;
00783    act.len = 0;
00784 
00785    cb_log(1, stack->port, "SENDING PH_DEACTIVATE | REQ\n");
00786    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00787 }
00788 
00789 
00790 static int misdn_lib_get_l2_down(struct misdn_stack *stack)
00791 {
00792    
00793    if (stack->ptp && (stack->nt) ) {
00794       msg_t *dmsg;
00795       /* L2 */
00796       dmsg = create_l2msg(DL_RELEASE| REQUEST, 0, 0);
00797       
00798       if (stack->nst.manager_l3(&stack->nst, dmsg))
00799          free_msg(dmsg);
00800       
00801    } else {
00802       iframe_t act;
00803       
00804       act.prim = DL_RELEASE| REQUEST;
00805       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00806       
00807       act.dinfo = 0;
00808       act.len = 0;
00809       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00810    }
00811    
00812    return 0;
00813 }
00814 
00815 
00816 static int misdn_lib_get_l1_up(struct misdn_stack *stack)
00817 {
00818    /* Pull Up L1 */ 
00819    iframe_t act;
00820    act.prim = PH_ACTIVATE | REQUEST; 
00821    act.addr = (stack->upper_id | FLG_MSG_DOWN)  ;
00822 
00823    
00824    act.dinfo = 0;
00825    act.len = 0;
00826 
00827    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00828 
00829 }
00830 
00831 int misdn_lib_get_l2_up(struct misdn_stack *stack)
00832 {
00833    
00834    if (stack->ptp && (stack->nt) ) {
00835       msg_t *dmsg;
00836       /* L2 */
00837       dmsg = create_l2msg(DL_ESTABLISH | REQUEST, 0, 0);
00838       
00839       if (stack->nst.manager_l3(&stack->nst, dmsg))
00840          free_msg(dmsg);
00841       
00842    } else {
00843       iframe_t act;
00844       
00845       act.prim = DL_ESTABLISH | REQUEST;
00846       act.addr = (stack->upper_id |FLG_MSG_DOWN)  ;
00847       
00848       act.dinfo = 0;
00849       act.len = 0;
00850       return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00851    }
00852    
00853    return 0;
00854 }
00855 
00856 #if 0
00857 static int misdn_lib_get_l2_te_ptp_up(struct misdn_stack *stack)
00858 {
00859    iframe_t act;
00860       
00861    act.prim = DL_ESTABLISH | REQUEST;
00862    act.addr = (stack->upper_id  & ~LAYER_ID_MASK) | 3 | FLG_MSG_DOWN;
00863       
00864    act.dinfo = 0;
00865    act.len = 0;
00866    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00867    return 0;
00868 }
00869 #endif
00870 
00871 static int misdn_lib_get_short_status(struct misdn_stack *stack)
00872 {
00873    iframe_t act;
00874    
00875    
00876    act.prim = MGR_SHORTSTATUS | REQUEST; 
00877    
00878    act.addr = (stack->upper_id | MSG_BROADCAST)  ;
00879 
00880    act.dinfo = SSTATUS_BROADCAST_BIT | SSTATUS_ALL;
00881    
00882    act.len = 0;
00883    return mISDN_write(stack->midev, &act, mISDN_HEADER_LEN+act.len, TIMEOUT_1SEC);
00884 }
00885 
00886 
00887 
00888 static int create_process(int midev, struct misdn_bchannel *bc)
00889 {
00890    iframe_t ncr;
00891    int l3_id;
00892    int proc_id;
00893    struct misdn_stack *stack;
00894 
00895    stack = get_stack_by_bc(bc);
00896    if (stack->nt) {
00897       if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, 0) < 0) {
00898          return -1;
00899       }
00900       cb_log(4, stack->port, " -->  found channel: %d\n", bc->channel);
00901 
00902       for (proc_id = 0; proc_id < MAXPROCS; ++proc_id) {
00903          if (stack->procids[proc_id] == 0) {
00904             break;
00905          }
00906       }  /* end for */
00907       if (proc_id == MAXPROCS) {
00908          cb_log(0, stack->port, "Couldn't Create New ProcId.\n");
00909          return -1;
00910       }
00911 
00912       stack->procids[proc_id] = 1;
00913 
00914       l3_id = 0xff00 | proc_id;
00915       bc->l3_id = l3_id;
00916       cb_log(3, stack->port, " --> new_l3id %x\n", l3_id);
00917    } else {
00918       if ((stack->pri && stack->ptp) || bc->te_choose_channel) {
00919          /* we know exactly which channels are in use */
00920          if (find_free_chan_in_stack(stack, bc, bc->channel_preselected ? bc->channel : 0, bc->dec) < 0) {
00921             return -1;
00922          }
00923          cb_log(2, stack->port, " -->  found channel: %d\n", bc->channel);
00924       } else {
00925          /* other phones could have made a call also on this port (ptmp) */
00926          bc->channel = 0xff;
00927       }
00928 
00929       /* if we are in te-mode, we need to create a process first */
00930       if (++new_te_id > 0xffff) {
00931          new_te_id = 0x0001;
00932       }
00933 
00934       l3_id = (entity << 16) | new_te_id;
00935       bc->l3_id = l3_id;
00936       cb_log(3, stack->port, "--> new_l3id %x\n", l3_id);
00937 
00938       /* send message */
00939       ncr.prim = CC_NEW_CR | REQUEST;
00940       ncr.addr = (stack->upper_id | FLG_MSG_DOWN);
00941       ncr.dinfo = l3_id;
00942       ncr.len = 0;
00943       mISDN_write(midev, &ncr, mISDN_HEADER_LEN + ncr.len, TIMEOUT_1SEC);
00944    }
00945 
00946    return l3_id;
00947 }
00948 
00949 
00950 void misdn_lib_setup_bc(struct misdn_bchannel *bc)
00951 {
00952    clean_up_bc(bc);
00953    setup_bc(bc);
00954 }
00955 
00956 
00957 int setup_bc(struct misdn_bchannel *bc)
00958 {
00959    unsigned char buff[1025];
00960    int midev;
00961    int channel;
00962    int b_stid;
00963    int i;
00964    mISDN_pid_t pid;
00965    int ret;
00966 
00967    struct misdn_stack *stack=get_stack_by_bc(bc);
00968 
00969    if (!stack) {
00970       cb_log(0, bc->port, "setup_bc: NO STACK FOUND!!\n");
00971       return -1;
00972    }
00973    
00974    midev = stack->midev;
00975    channel = bc->channel - 1 - (bc->channel > 16);
00976    b_stid = stack->b_stids[channel >= 0 ? channel : 0];
00977 
00978    switch (bc->bc_state) {
00979       case BCHAN_CLEANED:
00980          break;
00981       default:
00982          cb_log(4, stack->port, "$$$ bc already setup stid :%x (state:%s)\n", b_stid, bc_state2str(bc->bc_state) );
00983          return -1;
00984    }
00985    
00986    cb_log(5, stack->port, "$$$ Setting up bc with stid :%x\n", b_stid);
00987    
00988    /*check if the b_stid is already initialized*/
00989    for (i=0; i <= stack->b_num; i++) {
00990       if (stack->bc[i].b_stid == b_stid) {
00991          cb_log(0, bc->port, "setup_bc: b_stid:%x already in use !!!\n", b_stid);
00992          return -1;
00993       }
00994    }
00995    
00996    if (b_stid <= 0) {
00997       cb_log(0, stack->port," -- Stid <=0 at the moment in channel:%d\n",channel);
00998       
00999       bc_state_change(bc,BCHAN_ERROR);
01000       return 1;
01001    }
01002 
01003    bc->b_stid = b_stid;
01004 
01005    {
01006       layer_info_t li;
01007       memset(&li, 0, sizeof(li));
01008     
01009       li.object_id = -1;
01010       li.extentions = 0;
01011       
01012       li.st = bc->b_stid; /*  given idx */
01013 
01014 
01015 #define MISDN_DSP
01016 #ifndef MISDN_DSP
01017       bc->nodsp=1;
01018 #endif
01019       if ( bc->hdlc || bc->nodsp) {
01020          cb_log(4, stack->port,"setup_bc: without dsp\n");
01021          { 
01022             int l = sizeof(li.name);
01023             strncpy(li.name, "B L3", l);
01024             li.name[l-1] = 0;
01025          }
01026          li.pid.layermask = ISDN_LAYER((3));
01027          li.pid.protocol[3] = ISDN_PID_L3_B_USER;
01028          
01029          bc->layer=3;
01030       } else {
01031          cb_log(4, stack->port,"setup_bc: with dsp\n");
01032          { 
01033             int l = sizeof(li.name);
01034             strncpy(li.name, "B L4", l);
01035             li.name[l-1] = 0;
01036          }
01037          li.pid.layermask = ISDN_LAYER((4));
01038          li.pid.protocol[4] = ISDN_PID_L4_B_USER;
01039 
01040          bc->layer=4;
01041       }  
01042       
01043       ret = mISDN_new_layer(midev, &li);
01044       if (ret ) {
01045          cb_log(0, stack->port,"New Layer Err: %d %s\n",ret,strerror(errno));
01046 
01047          bc_state_change(bc,BCHAN_ERROR);
01048          return(-EINVAL);
01049       }
01050       
01051       bc->layer_id = li.id;
01052    }
01053    
01054    memset(&pid, 0, sizeof(pid));
01055    
01056    
01057    
01058    cb_log(4, stack->port," --> Channel is %d\n", bc->channel);
01059    
01060    if (bc->nodsp) {
01061       cb_log(2, stack->port," --> TRANSPARENT Mode (no DSP, no HDLC)\n");
01062       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01063       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01064       pid.protocol[3] = ISDN_PID_L3_B_USER;
01065       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3));
01066       
01067    } else if ( bc->hdlc ) {
01068       cb_log(2, stack->port," --> HDLC Mode\n");
01069       pid.protocol[1] = ISDN_PID_L1_B_64HDLC ;
01070       pid.protocol[2] = ISDN_PID_L2_B_TRANS  ;
01071       pid.protocol[3] = ISDN_PID_L3_B_USER;
01072       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) ;
01073    } else {
01074       cb_log(2, stack->port," --> TRANSPARENT Mode\n");
01075       pid.protocol[1] = ISDN_PID_L1_B_64TRANS;
01076       pid.protocol[2] = ISDN_PID_L2_B_TRANS;
01077       pid.protocol[3] = ISDN_PID_L3_B_DSP;
01078       pid.protocol[4] = ISDN_PID_L4_B_USER;
01079       pid.layermask = ISDN_LAYER((1)) | ISDN_LAYER((2)) | ISDN_LAYER((3)) | ISDN_LAYER((4));
01080       
01081    } 
01082 
01083    ret = mISDN_set_stack(midev, bc->b_stid, &pid);
01084 
01085    if (ret){
01086       cb_log(0, stack->port,"$$$ Set Stack Err: %d %s\n",ret,strerror(errno));
01087       
01088       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01089       
01090       bc_state_change(bc,BCHAN_ERROR);
01091       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01092       return(-EINVAL);
01093    }
01094 
01095    ret = mISDN_get_setstack_ind(midev, bc->layer_id);
01096 
01097    if (ret) {
01098       cb_log(0, stack->port,"$$$ Set StackIND Err: %d %s\n",ret,strerror(errno));
01099       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01100       
01101       bc_state_change(bc,BCHAN_ERROR);
01102       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01103       return(-EINVAL);
01104    }
01105 
01106    ret = mISDN_get_layerid(midev, bc->b_stid, bc->layer) ;
01107 
01108    bc->addr = ret>0? ret : 0;
01109 
01110    if (!bc->addr) {
01111       cb_log(0, stack->port,"$$$ Get Layerid Err: %d %s\n",ret,strerror(errno));
01112       mISDN_write_frame(midev, buff, bc->layer_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01113       
01114       bc_state_change(bc,BCHAN_ERROR);
01115       cb_event(EVENT_BCHAN_ERROR, bc, glob_mgr->user_data);
01116       return (-EINVAL);
01117    }
01118 
01119    manager_bchannel_activate(bc);
01120    
01121    bc_state_change(bc,BCHAN_ACTIVATED);
01122 
01123    return 0;
01124 }
01125 
01126 
01127 
01128 /** IFACE **/
01129 static int init_bc(struct misdn_stack *stack, struct misdn_bchannel *bc, int midev, int port, int bidx, char *msn, int firsttime)
01130 {
01131    unsigned char buff[1025] = "";
01132    iframe_t *frm = (iframe_t *)buff;
01133    int ret;
01134   
01135    if (!bc) return -1;
01136   
01137    cb_log(8, port, "Init.BC %d.\n",bidx);
01138    
01139    memset(bc, 0,sizeof(struct misdn_bchannel));
01140 
01141    bc->send_lock=malloc(sizeof(struct send_lock));
01142    if (!bc->send_lock) {
01143       return -1;
01144    }
01145    pthread_mutex_init(&bc->send_lock->lock, NULL);
01146    
01147    if (msn) {
01148       int l = sizeof(bc->msn);
01149       strncpy(bc->msn,msn, l);
01150       bc->msn[l-1] = 0;
01151    }
01152    
01153    
01154    empty_bc(bc);
01155    bc_state_change(bc, BCHAN_CLEANED);
01156    
01157    bc->port=stack->port;
01158    bc->nt=stack->nt?1:0;
01159    bc->pri=stack->pri;
01160    
01161    {
01162       ibuffer_t* ibuf= init_ibuffer(MISDN_IBUF_SIZE);
01163 
01164       if (!ibuf) return -1;
01165       
01166       clear_ibuffer( ibuf);
01167       
01168       ibuf->rsem=malloc(sizeof(sem_t));
01169       if (!ibuf->rsem) {
01170          return -1;
01171       }
01172       
01173       bc->astbuf=ibuf;
01174 
01175       if (sem_init(ibuf->rsem,1,0)<0)
01176          sem_init(ibuf->rsem,0,0);
01177       
01178    }
01179    
01180    {
01181       stack_info_t *stinf;
01182       ret = mISDN_get_stack_info(midev, stack->port, buff, sizeof(buff));
01183       if (ret < 0) {
01184          cb_log(0, port, "%s: Cannot get stack info for this port. (ret=%d)\n", __FUNCTION__, ret);
01185          return -1;
01186       }
01187     
01188       stinf = (stack_info_t *)&frm->data.p;
01189     
01190       cb_log(8, port, " --> Child %x\n",stinf->child[bidx]);
01191    }
01192   
01193    return 0;
01194 }
01195 
01196 
01197 
01198 static struct misdn_stack *stack_init(int midev, int port, int ptp)
01199 {
01200    int ret;
01201    unsigned char buff[1025];
01202    iframe_t *frm = (iframe_t *)buff;
01203    stack_info_t *stinf;
01204    int i; 
01205    layer_info_t li;
01206 
01207    struct misdn_stack *stack = malloc(sizeof(struct misdn_stack));
01208    if (!stack ) return NULL;
01209 
01210 
01211    cb_log(8, port, "Init. Stack.\n");
01212   
01213    memset(stack,0,sizeof(struct misdn_stack));
01214   
01215    for (i=0; i<MAX_BCHANS + 1; i++ ) stack->channels[i]=0;
01216    
01217    stack->port=port;
01218    stack->midev=midev;
01219    stack->ptp=ptp;
01220   
01221    stack->holding=NULL;
01222    stack->pri=0;
01223   
01224    msg_queue_init(&stack->downqueue);
01225    msg_queue_init(&stack->upqueue);
01226   
01227    /* query port's requirements */
01228    ret = mISDN_get_stack_info(midev, port, buff, sizeof(buff));
01229    if (ret < 0) {
01230       cb_log(0, port, "%s: Cannot get stack info for this port. (ret=%d)\n", __FUNCTION__, ret);
01231       return(NULL);
01232    }
01233   
01234    stinf = (stack_info_t *)&frm->data.p;
01235 
01236    stack->d_stid = stinf->id;
01237    stack->b_num = stinf->childcnt;
01238 
01239    for (i=0; i<=stinf->childcnt; i++)
01240       stack->b_stids[i] = stinf->child[i];
01241   
01242    switch(stinf->pid.protocol[0] & ~ISDN_PID_FEATURE_MASK) {
01243    case ISDN_PID_L0_TE_S0:
01244       stack->nt=0;
01245       break;
01246    case ISDN_PID_L0_NT_S0:
01247       cb_log(8, port, "NT Stack\n");
01248 
01249       stack->nt=1;
01250       break;
01251    case ISDN_PID_L0_TE_E1:
01252       cb_log(8, port, "TE S2M Stack\n");
01253       stack->nt=0;
01254       stack->pri=1;
01255       break;
01256    case ISDN_PID_L0_NT_E1:
01257       cb_log(8, port, "TE S2M Stack\n");
01258       stack->nt=1;
01259       stack->pri=1;
01260       
01261       break;
01262    default:
01263       cb_log(0, port, "this is a unknown port type 0x%08x\n", stinf->pid.protocol[0]);
01264 
01265    }
01266 
01267    if (!stack->nt) {
01268       if (stinf->pid.protocol[2] & ISDN_PID_L2_DF_PTP ) { 
01269          stack->ptp = 1;
01270       } else {
01271          stack->ptp = 0;
01272       }
01273    }
01274    
01275    {
01276       int ret;
01277       int nt=stack->nt;
01278 
01279       cb_log(8, port, "Init. Stack.\n");
01280       
01281       memset(&li, 0, sizeof(li));
01282       {
01283          int l = sizeof(li.name);
01284          strncpy(li.name,nt?"net l2":"user l4", l);
01285          li.name[l-1] = 0;
01286       }
01287       li.object_id = -1;
01288       li.extentions = 0;
01289       li.pid.protocol[nt?2:4] = nt?ISDN_PID_L2_LAPD_NET:ISDN_PID_L4_CAPI20;
01290       li.pid.layermask = ISDN_LAYER((nt?2:4));
01291       li.st = stack->d_stid;
01292       
01293       
01294       ret = mISDN_new_layer(midev, &li);
01295       if (ret) {
01296          cb_log(0, port, "%s: Cannot add layer %d to this port.\n", __FUNCTION__, nt?2:4);
01297          return(NULL);
01298       }
01299       
01300       
01301       stack->upper_id = li.id;
01302       ret = mISDN_register_layer(midev, stack->d_stid, stack->upper_id);
01303       if (ret)
01304       {
01305          cb_log(0,port,"Cannot register layer %d of this port.\n", nt?2:4);
01306          return(NULL);
01307       }
01308       
01309       stack->lower_id = mISDN_get_layerid(midev, stack->d_stid, nt?1:3); 
01310       if (stack->lower_id < 0) {
01311          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, nt?1:3);
01312          return(NULL);
01313       }
01314       
01315       stack->upper_id = mISDN_get_layerid(midev, stack->d_stid, nt?2:4);
01316       if (stack->upper_id < 0) {
01317          cb_log(0, port, "%s: Cannot get layer(%d) id of this port.\n", __FUNCTION__, 2);
01318          return(NULL);
01319       }
01320       
01321       cb_log(8, port, "NT Stacks upper_id %x\n",stack->upper_id);
01322       
01323       
01324       /* create nst (nt-mode only) */
01325       if (nt) {
01326          
01327          memset(&stack->nst, 0, sizeof(net_stack_t));
01328          memset(&stack->mgr, 0, sizeof(manager_t));
01329     
01330          stack->mgr.nst = &stack->nst;
01331          stack->nst.manager = &stack->mgr;
01332     
01333          stack->nst.l3_manager = handle_event_nt;
01334          stack->nst.device = midev;
01335          stack->nst.cardnr = port;
01336          stack->nst.d_stid = stack->d_stid;
01337     
01338          stack->nst.feature = FEATURE_NET_HOLD;
01339          if (stack->ptp)
01340             stack->nst.feature |= FEATURE_NET_PTP;
01341          if (stack->pri)
01342             stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
01343          
01344          stack->nst.l1_id = stack->lower_id;
01345          stack->nst.l2_id = stack->upper_id;
01346          
01347          msg_queue_init(&stack->nst.down_queue);
01348          
01349          Isdnl2Init(&stack->nst);
01350          Isdnl3Init(&stack->nst);
01351          
01352       } 
01353       
01354       if (!stack->nt) {
01355          /*assume L1 is up, we'll get DEACTIVATES soon, for non
01356           * up L1s*/
01357          stack->l1link=0;
01358       }
01359       stack->l1link=0;
01360       stack->l2link=0;
01361 #if 0 
01362       if (!stack->nt) {
01363          misdn_lib_get_short_status(stack);
01364       } else {
01365          misdn_lib_get_l1_up(stack);
01366          if (!stack->ptp) misdn_lib_get_l1_up(stack);
01367          misdn_lib_get_l2_up(stack);
01368       }
01369 #endif
01370 
01371       misdn_lib_get_short_status(stack);
01372       misdn_lib_get_l1_up(stack);
01373       misdn_lib_get_l2_up(stack); 
01374       
01375    }
01376 
01377    cb_log(8,0,"stack_init: port:%d lowerId:%x  upperId:%x\n",stack->port,stack->lower_id, stack->upper_id);
01378    
01379    return stack;
01380 }
01381 
01382 
01383 static void stack_destroy(struct misdn_stack *stack)
01384 {
01385    char buf[1024];
01386    if (!stack) return;
01387 
01388    if (stack->nt) {
01389       cleanup_Isdnl2(&stack->nst);
01390       cleanup_Isdnl3(&stack->nst);
01391    }
01392   
01393    if (stack->lower_id) 
01394       mISDN_write_frame(stack->midev, buf, stack->lower_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01395 
01396    if (stack->upper_id) 
01397       mISDN_write_frame(stack->midev, buf, stack->upper_id, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
01398 }
01399 
01400 
01401 static struct misdn_stack * find_stack_by_addr(int  addr)
01402 {
01403    struct misdn_stack *stack;
01404    
01405    for (stack=glob_mgr->stack_list;
01406         stack;
01407         stack=stack->next) {
01408       if ( (stack->upper_id&STACK_ID_MASK) == (addr&STACK_ID_MASK)) return stack;
01409 
01410    }
01411   
01412    return NULL;
01413 }
01414 
01415 
01416 static struct misdn_stack * find_stack_by_port(int port)
01417 {
01418    struct misdn_stack *stack;
01419   
01420    for (stack=glob_mgr->stack_list;
01421         stack;
01422         stack=stack->next) 
01423       if (stack->port == port) return stack;
01424   
01425    return NULL;
01426 }
01427 
01428 static struct misdn_stack * find_stack_by_mgr(manager_t* mgr_nt)
01429 {
01430    struct misdn_stack *stack;
01431   
01432    for (stack=glob_mgr->stack_list;
01433         stack;
01434         stack=stack->next) 
01435       if ( &stack->mgr == mgr_nt) return stack;
01436   
01437    return NULL;
01438 }
01439 
01440 static struct misdn_bchannel *find_bc_by_masked_l3id(struct misdn_stack *stack, unsigned long l3id, unsigned long mask)
01441 {
01442    int i;
01443    for (i=0; i<=stack->b_num; i++) {
01444       if ( (stack->bc[i].l3_id & mask)  ==  (l3id & mask)) return &stack->bc[i] ;
01445    }
01446    return stack_holder_find(stack,l3id);
01447 }
01448 
01449 
01450 struct misdn_bchannel *find_bc_by_l3id(struct misdn_stack *stack, unsigned long l3id)
01451 {
01452    int i;
01453    for (i=0; i<=stack->b_num; i++) {
01454       if (stack->bc[i].l3_id == l3id) return &stack->bc[i] ;
01455    }
01456    return stack_holder_find(stack,l3id);
01457 }
01458 
01459 static struct misdn_bchannel *find_bc_holded(struct misdn_stack *stack)
01460 {
01461    int i;
01462    for (i=0; i<=stack->b_num; i++) {
01463       if (stack->bc[i].holded ) return &stack->bc[i] ;
01464    }
01465    return NULL;
01466 }
01467 
01468 
01469 static struct misdn_bchannel *find_bc_by_addr(unsigned long addr)
01470 {
01471    struct misdn_stack* stack;
01472    int i;
01473 
01474    for (stack=glob_mgr->stack_list;
01475         stack;
01476         stack=stack->next) {
01477       for (i=0; i<=stack->b_num; i++) {
01478          if ( (stack->bc[i].addr&STACK_ID_MASK)==(addr&STACK_ID_MASK) ||  stack->bc[i].layer_id== addr ) {
01479             return &stack->bc[i];
01480          }
01481       }
01482    }
01483    
01484    return NULL;
01485 }
01486 
01487 struct misdn_bchannel *find_bc_by_confid(unsigned long confid)
01488 {
01489    struct misdn_stack* stack;
01490    int i;
01491    
01492    for (stack=glob_mgr->stack_list;
01493         stack;
01494         stack=stack->next) {
01495       for (i=0; i<=stack->b_num; i++) {
01496          if ( stack->bc[i].conf_id==confid ) {
01497             return &stack->bc[i];
01498          }
01499       }
01500    }
01501    return NULL;
01502 }
01503 
01504 
01505 static struct misdn_bchannel *find_bc_by_channel(int port, int channel)
01506 {
01507    struct misdn_stack* stack=find_stack_by_port(port);
01508    int i;
01509 
01510    if (!stack) return NULL;   
01511    
01512    for (i=0; i<=stack->b_num; i++) {
01513       if ( stack->bc[i].channel== channel ) {
01514          return &stack->bc[i];
01515       }
01516    }
01517       
01518    return NULL;
01519 }
01520 
01521 
01522 
01523 
01524 
01525 static int handle_event ( struct misdn_bchannel *bc, enum event_e event, iframe_t *frm)
01526 {
01527    struct misdn_stack *stack=get_stack_by_bc(bc);
01528    
01529    if (!stack->nt) {
01530       
01531       switch (event) {
01532 
01533       case EVENT_CONNECT_ACKNOWLEDGE:
01534          setup_bc(bc);
01535 
01536          if ( *bc->crypt_key ) {
01537             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);
01538             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01539          }
01540 
01541          if (misdn_cap_is_speech(bc->capability)) {
01542             if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
01543             manager_ec_enable(bc);
01544 
01545             if ( bc->txgain != 0 ) {
01546                cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
01547                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
01548             }
01549             if ( bc->rxgain != 0 ) {
01550                cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
01551                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
01552             }
01553          }
01554 
01555          break;
01556       case EVENT_CONNECT:
01557 
01558          if ( *bc->crypt_key ) {
01559             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);
01560             manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
01561          }
01562       case EVENT_ALERTING:
01563       case EVENT_PROGRESS:
01564       case EVENT_PROCEEDING:
01565       case EVENT_SETUP_ACKNOWLEDGE:
01566       case EVENT_SETUP:
01567       {
01568          if (bc->channel == 0xff || bc->channel<=0)
01569             bc->channel=0;
01570 
01571          if (find_free_chan_in_stack(stack, bc, bc->channel, 0)<0){
01572             if (!stack->pri && !stack->ptp)  {
01573                bc->cw=1;
01574                break;
01575             }
01576 
01577             if (!bc->channel)
01578                cb_log(0, stack->port, "Any Channel Requested, but we have no more!!\n");
01579             else 
01580                cb_log(0, stack->port, "Requested Channel Already in Use releasing this call with cause 34!!!!\n");
01581 
01582             /* when the channel is already in use, we can't
01583              * simply clear it, we need to make sure that 
01584              * it will still be marked as in_use in the 
01585              * available channels list.*/
01586             bc->channel=0;
01587 
01588             misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
01589             return -1;
01590          }
01591       }
01592 
01593       setup_bc(bc);
01594       break;
01595 
01596       case EVENT_RELEASE_COMPLETE:
01597       case EVENT_RELEASE:
01598          break;
01599       default:
01600          break;
01601       }
01602    } else {    /** NT MODE **/
01603       
01604    }
01605    return 0;
01606 }
01607 
01608 static int handle_cr ( struct misdn_stack *stack, iframe_t *frm)
01609 {
01610    struct misdn_bchannel *bc;
01611 
01612    if (!stack) return -1;
01613   
01614    switch (frm->prim) {
01615    case CC_NEW_CR|INDICATION:
01616       cb_log(7, stack->port, " --> lib: NEW_CR Ind with l3id:%x on this port.\n",frm->dinfo);
01617 
01618       bc = misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01619       if (!bc) {
01620          cb_log(0, stack->port, " --> !! lib: No free channel!\n");
01621          return -1;
01622       }
01623   
01624       cb_log(7, stack->port, " --> new_process: New L3Id: %x\n",frm->dinfo);
01625       bc->l3_id=frm->dinfo;
01626       return 1;
01627    case CC_NEW_CR|CONFIRM:
01628       return 1;
01629    case CC_NEW_CR|REQUEST:
01630       return 1;
01631    case CC_RELEASE_CR|REQUEST:
01632       return 1;
01633    case CC_RELEASE_CR|CONFIRM:
01634       break;
01635    case CC_RELEASE_CR|INDICATION:
01636       cb_log(4, stack->port, " --> lib: RELEASE_CR Ind with l3id:%x\n",frm->dinfo);
01637       {
01638          struct misdn_bchannel *bc=find_bc_by_l3id(stack, frm->dinfo);
01639          struct misdn_bchannel dummybc;
01640       
01641          if (!bc) {
01642             cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
01643             misdn_make_dummy(&dummybc, stack->port, frm->dinfo, stack->nt, 0);
01644             
01645             bc=&dummybc; 
01646          }
01647       
01648          if (bc) {
01649             int channel = bc->channel;
01650             cb_log(4, stack->port, " --> lib: CLEANING UP l3id: %x\n",frm->dinfo);
01651 
01652             /*bc->pid = 0;*/
01653             bc->need_disconnect=0;
01654             bc->need_release=0;
01655             bc->need_release_complete=0;
01656 
01657             cb_event(EVENT_CLEANUP, bc, glob_mgr->user_data);
01658 
01659             empty_bc(bc);
01660             clean_up_bc(bc);
01661 
01662             if (channel>0)
01663                empty_chan_in_stack(stack,channel);
01664             bc->in_use=0;
01665 
01666             dump_chan_list(stack);
01667 
01668             if (bc->stack_holder) {
01669                cb_log(4,stack->port, "REMOVING Holder\n");
01670                stack_holder_remove( stack, bc);
01671                free(bc);
01672             }
01673          }
01674          else {
01675             if (stack->nt) 
01676                cb_log(4, stack->port, "BC with dinfo: %x  not found.. (prim was %x and addr %x)\n",frm->dinfo, frm->prim, frm->addr);
01677          }
01678       
01679          return 1;
01680       }
01681       break;
01682    }
01683   
01684    return 0;
01685 }
01686 
01687 
01688 /* Empties bc if it's reserved (no SETUP out yet) */
01689 void misdn_lib_release(struct misdn_bchannel *bc)
01690 {
01691    struct misdn_stack *stack=get_stack_by_bc(bc);
01692 
01693    if (!stack) {
01694       cb_log(1,0,"misdn_release: No Stack found\n");
01695       return;
01696    }
01697    
01698    if (bc->channel>0) 
01699       empty_chan_in_stack(stack,bc->channel);
01700    
01701    empty_bc(bc);
01702    clean_up_bc(bc);
01703    bc->in_use=0;
01704 }
01705 
01706 
01707 
01708 
01709 int misdn_lib_get_port_up (int port) 
01710 { /* Pull Up L1 */ 
01711    struct misdn_stack *stack;
01712    
01713    for (stack=glob_mgr->stack_list;
01714         stack;
01715         stack=stack->next) {
01716       
01717       if (stack->port == port) {
01718 
01719          if (!stack->l1link)
01720             misdn_lib_get_l1_up(stack);
01721          if (!stack->l2link)
01722             misdn_lib_get_l2_up(stack);
01723          
01724          return 0;
01725       }
01726    }
01727    return 0;
01728 }
01729 
01730 
01731 int misdn_lib_get_port_down (int port) 
01732 { /* Pull Down L1 */ 
01733    struct misdn_stack *stack;
01734    for (stack=glob_mgr->stack_list;
01735         stack;
01736         stack=stack->next) {
01737       if (stack->port == port) {
01738             if (stack->l2link)
01739                misdn_lib_get_l2_down(stack);
01740             misdn_lib_get_l1_down(stack);
01741          return 0;
01742       }
01743    }
01744    return 0;
01745 }
01746 
01747 int misdn_lib_port_up(int port, int check)
01748 {
01749    struct misdn_stack *stack;
01750 
01751 
01752    for (stack=glob_mgr->stack_list;
01753         stack;
01754         stack=stack->next) {
01755       
01756       if (stack->port == port) {
01757 
01758          if (stack->blocked) {
01759             cb_log(0,port, "Port Blocked:%d L2:%d L1:%d\n", stack->blocked, stack->l2link, stack->l1link);
01760             return -1;
01761          }
01762 
01763          if (stack->ptp ) {
01764 
01765             if (stack->l1link && stack->l2link) {
01766                return 1;
01767             } else {
01768                cb_log(1,port, "Port Down L2:%d L1:%d\n",
01769                   stack->l2link, stack->l1link);
01770                return 0;
01771             }
01772          } else {
01773             if ( !check || stack->l1link )
01774                return 1;
01775             else {
01776                cb_log(1,port, "Port down PMP\n");
01777                return 0;
01778             }
01779          }
01780       }
01781    }
01782   
01783    return -1;
01784 }
01785 
01786 
01787 int release_cr(struct misdn_stack *stack, mISDNuser_head_t *hh)
01788 {
01789    struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01790    struct misdn_bchannel dummybc;
01791    iframe_t frm; /* fake te frm to remove callref from global callreflist */
01792    frm.dinfo = hh->dinfo;
01793 
01794    frm.addr=stack->upper_id | FLG_MSG_DOWN;
01795 
01796    frm.prim = CC_RELEASE_CR|INDICATION;
01797    cb_log(4, stack->port, " --> CC_RELEASE_CR: Faking Release_cr for %x l3id:%x\n",frm.addr, frm.dinfo);
01798    /** removing procid **/
01799    if (!bc) {
01800       cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", hh->dinfo);
01801       misdn_make_dummy(&dummybc, stack->port, hh->dinfo, stack->nt, 0);
01802       bc=&dummybc; 
01803    }
01804 
01805    if (bc) {
01806       if ( (bc->l3_id & 0xff00) == 0xff00) {
01807          cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", bc->l3_id&0xff);
01808          stack->procids[bc->l3_id&0xff] = 0 ;
01809       }
01810    }
01811    else cb_log(0, stack->port, "Couldn't find BC so I couldn't remove the Process!!!! this is a bad port.\n");
01812 
01813    if (handle_cr(stack, &frm)<0) {
01814    }
01815 
01816    return 0 ;
01817 }
01818 
01819 int
01820 handle_event_nt(void *dat, void *arg)
01821 {
01822    manager_t *mgr = (manager_t *)dat;
01823    msg_t *msg = (msg_t *)arg;
01824    mISDNuser_head_t *hh;
01825    int reject=0;
01826 
01827    struct misdn_stack *stack=find_stack_by_mgr(mgr);
01828    int port;
01829 
01830    if (!msg || !mgr)
01831       return(-EINVAL);
01832 
01833    hh=(mISDNuser_head_t*)msg->data;
01834    port=stack->port;
01835    
01836    cb_log(5, stack->port, " --> lib: prim %x dinfo %x\n",hh->prim, hh->dinfo);
01837    {
01838       switch(hh->prim){
01839       case CC_RETRIEVE|INDICATION:
01840       {
01841          struct misdn_bchannel *bc;
01842          struct misdn_bchannel *hold_bc;
01843 
01844          iframe_t frm; /* fake te frm to add callref to global callreflist */
01845          frm.dinfo = hh->dinfo;
01846 
01847          frm.addr=stack->upper_id | FLG_MSG_DOWN;
01848 
01849          frm.prim = CC_NEW_CR|INDICATION;
01850          
01851          if (handle_cr( stack, &frm)< 0) {
01852             msg_t *dmsg;
01853             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01854             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01855             stack->nst.manager_l3(&stack->nst, dmsg);
01856             free_msg(msg);
01857             return 0;
01858          }
01859          
01860          bc = find_bc_by_l3id(stack, hh->dinfo);
01861          hold_bc = stack_holder_find(stack, bc->l3_id);
01862          cb_log(4, stack->port, "bc_l3id:%x holded_bc_l3id:%x\n",bc->l3_id, hold_bc->l3_id);
01863 
01864          if (hold_bc) {
01865             cb_log(4, stack->port, "REMOVING Holder\n");
01866 
01867             /*swap the backup to our new channel back*/
01868             stack_holder_remove(stack, hold_bc);
01869             memcpy(bc, hold_bc, sizeof(struct misdn_bchannel));
01870             free(hold_bc);
01871 
01872             bc->holded=0;
01873             bc->b_stid=0;
01874          }
01875          
01876       }
01877          
01878          break;
01879          
01880       case CC_SETUP|CONFIRM:
01881       {
01882          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01883          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
01884          cb_log(4, stack->port, " --> lib: Event_ind:SETUP CONFIRM [NT] : new L3ID  is %x\n",l3id );
01885    
01886          if (!bc) { cb_log(4, stack->port, "Bc Not found (after SETUP CONFIRM)\n"); return 0; }
01887          cb_log (2,bc->port,"I IND :CC_SETUP|CONFIRM: old l3id:%x new l3id:%x\n", bc->l3_id, l3id);
01888          bc->l3_id=l3id;
01889          cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
01890       }
01891       free_msg(msg);
01892       return 0;
01893       
01894       case CC_SETUP|INDICATION:
01895       {
01896          struct misdn_bchannel* bc=misdn_lib_get_free_bc(stack->port, 0, 1, 0);
01897          if (!bc) 
01898          ERR_NO_CHANNEL:
01899          {
01900             msg_t *dmsg;
01901             cb_log(4, stack->port, "Patch from MEIDANIS:Sending RELEASE_COMPLETE %x (No free Chan for you..)\n", hh->dinfo);
01902             dmsg = create_l3msg(CC_RELEASE_COMPLETE | REQUEST,MT_RELEASE_COMPLETE, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01903             stack->nst.manager_l3(&stack->nst, dmsg);
01904             free_msg(msg);
01905             return 0;
01906          }
01907   
01908          cb_log(4, stack->port, " --> new_process: New L3Id: %x\n",hh->dinfo);
01909          bc->l3_id=hh->dinfo;
01910       }
01911       break;
01912 
01913       case CC_CONNECT_ACKNOWLEDGE|INDICATION:
01914       break;
01915       
01916       case CC_ALERTING|INDICATION:
01917       case CC_PROCEEDING|INDICATION:
01918       case CC_SETUP_ACKNOWLEDGE|INDICATION:
01919          if(!stack->ptp) break;  
01920       case CC_CONNECT|INDICATION:
01921       break;
01922       case CC_DISCONNECT|INDICATION:
01923       {
01924          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01925          if (!bc) {
01926             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
01927             if (bc) { 
01928                int myprocid=bc->l3_id&0x0000ffff;
01929                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
01930                cb_log(3,stack->port,"Reject dinfo: %x cause:%d\n",hh->dinfo,bc->cause);
01931                reject=1;      
01932             }
01933          }
01934       }
01935       break;
01936       
01937       case CC_FACILITY|INDICATION:
01938       {
01939          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01940          if (!bc) {
01941             bc=find_bc_by_masked_l3id(stack, hh->dinfo, 0xffff0000);
01942             if (bc) { 
01943                int myprocid=bc->l3_id&0x0000ffff;
01944                hh->dinfo=(hh->dinfo&0xffff0000)|myprocid;
01945                cb_log(4,bc->port,"Repaired reject Bug, new dinfo: %x\n",hh->dinfo);
01946             }
01947          }
01948       }
01949       break;
01950       
01951       case CC_RELEASE_COMPLETE|INDICATION:
01952          break;
01953 
01954       case CC_SUSPEND|INDICATION:
01955       {
01956          msg_t *dmsg;
01957          cb_log(4, stack->port, " --> Got Suspend, sending Reject for now\n");
01958          dmsg = create_l3msg(CC_SUSPEND_REJECT | REQUEST,MT_SUSPEND_REJECT, hh->dinfo,sizeof(RELEASE_COMPLETE_t), 1);
01959          stack->nst.manager_l3(&stack->nst, dmsg);
01960          free_msg(msg);
01961          return 0;
01962       }
01963       break;
01964       case CC_RESUME|INDICATION:
01965          break;
01966 
01967       case CC_RELEASE|CONFIRM:
01968          {
01969             struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01970 
01971             if (bc) { 
01972                cb_log(1, stack->port, "CC_RELEASE|CONFIRM (l3id:%x), sending RELEASE_COMPLETE\n", hh->dinfo);
01973                misdn_lib_send_event(bc, EVENT_RELEASE_COMPLETE);
01974             }
01975          }
01976          break;
01977          
01978       case CC_RELEASE|INDICATION:
01979          break;
01980 
01981       case CC_RELEASE_CR|INDICATION:
01982          release_cr(stack, hh);
01983          free_msg(msg);
01984          return 0 ;
01985       break;
01986       
01987       case CC_NEW_CR|INDICATION:
01988          /*  Got New CR for bchan, for now I handle this one in */
01989          /*  connect_ack, Need to be changed */
01990       {
01991          struct misdn_bchannel *bc=find_bc_by_l3id(stack, hh->dinfo);
01992          int l3id = *((int *)(((u_char *)msg->data)+ mISDNUSER_HEAD_SIZE));
01993          if (!bc) { cb_log(0, stack->port, " --> In NEW_CR: didn't found bc ??\n"); return -1;};
01994          if (((l3id&0xff00)!=0xff00) && ((bc->l3_id&0xff00)==0xff00)) {
01995             cb_log(4, stack->port, " --> Removing Process Id:%x on this port.\n", 0xff&bc->l3_id);
01996             stack->procids[bc->l3_id&0xff] = 0 ;
01997          }
01998          cb_log(4, stack->port, "lib: Event_ind:CC_NEW_CR : very new L3ID  is %x\n",l3id );
01999    
02000          bc->l3_id =l3id;
02001          cb_event(EVENT_NEW_L3ID, bc, glob_mgr->user_data);
02002    
02003          free_msg(msg);
02004          return 0;
02005       }
02006       
02007       case DL_ESTABLISH | INDICATION:
02008       case DL_ESTABLISH | CONFIRM:
02009       {
02010          cb_log(3, stack->port, "%% GOT L2 Activate Info.\n");
02011          
02012          if (stack->ptp && stack->l2link) {
02013             cb_log(0, stack->port, "%% GOT L2 Activate Info. but we're activated already.. this l2 is faulty, blocking port\n");
02014             cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02015          }
02016 
02017          if (stack->ptp && !stack->restart_sent) {
02018             /* make sure we restart the interface of the 
02019              * other side */
02020             stack->restart_sent=1;
02021             misdn_lib_send_restart(stack->port, -1);
02022 
02023          }
02024       
02025          /* when we get the L2 UP, the L1 is UP definitely too*/
02026          stack->l1link = 1;
02027          stack->l2link = 1;
02028          stack->l2upcnt=0;
02029          
02030          free_msg(msg);
02031          return 0;
02032       }
02033       break;
02034 
02035 
02036       case DL_RELEASE | INDICATION:
02037       case DL_RELEASE | CONFIRM:
02038       {
02039          if (stack->ptp) {
02040             cb_log(3 , stack->port, "%% GOT L2 DeActivate Info.\n");
02041 
02042             if (stack->l2upcnt>3) {
02043                cb_log(0 , stack->port, "!!! Could not Get the L2 up after 3 Attempts!!!\n");
02044             }  else {
02045 #if 0
02046                if (stack->nt) misdn_lib_reinit_nt_stack(stack->port);
02047 #endif
02048                if (stack->l1link) {
02049                   misdn_lib_get_l2_up(stack);
02050                   stack->l2upcnt++;
02051                }
02052             }
02053             
02054          } else 
02055             cb_log(3, stack->port, "%% GOT L2 DeActivate Info.\n");
02056          
02057          stack->l2link = 0;
02058          free_msg(msg);
02059          return 0;
02060       }
02061       break;
02062       }
02063    }
02064    
02065    {
02066       /*  Parse Events and fire_up to App. */
02067       struct misdn_bchannel *bc;
02068       struct misdn_bchannel dummybc;
02069       
02070       enum event_e event = isdn_msg_get_event(msgs_g, msg, 1);
02071     
02072       bc=find_bc_by_l3id(stack, hh->dinfo);
02073     
02074       if (!bc) {
02075          cb_log(4, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x).\n", hh->dinfo);
02076          misdn_make_dummy(&dummybc, stack->port,  hh->dinfo, stack->nt, 0);
02077          bc=&dummybc; 
02078       }
02079       if (bc ) {
02080          isdn_msg_parse_event(msgs_g,msg,bc, 1);
02081 
02082          switch (event) {
02083             case EVENT_SETUP:
02084                if (bc->channel<=0 || bc->channel==0xff) 
02085                   bc->channel=0;
02086             
02087                if (find_free_chan_in_stack(stack,bc, bc->channel,0)<0) 
02088                   goto ERR_NO_CHANNEL;
02089                break;
02090             case EVENT_RELEASE:
02091             case EVENT_RELEASE_COMPLETE:
02092                {
02093                int channel=bc->channel;
02094                int tmpcause=bc->cause; 
02095                          empty_bc(bc);
02096                bc->cause=tmpcause;
02097                clean_up_bc(bc);
02098 
02099                if (channel>0)
02100                                  empty_chan_in_stack(stack,channel);
02101                bc->in_use=0;
02102                }
02103                break;
02104 
02105             default:
02106             break;
02107          }
02108          
02109          if(!isdn_get_info(msgs_g,event,1)) {
02110             cb_log(4, stack->port, "Unknown Event Ind: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02111          } else {
02112             if (reject) {
02113                switch(bc->cause){
02114                   case AST_CAUSE_USER_BUSY:
02115                      cb_log(1, stack->port, "Siemens Busy reject..\n");
02116 
02117                      break;
02118                   default:
02119                      break;
02120                }
02121             }
02122             cb_event(event, bc, glob_mgr->user_data);
02123          }
02124       } else {
02125          cb_log(4, stack->port, "No BC found with l3id: prim %x dinfo %x\n",hh->prim, hh->dinfo);
02126       }
02127 
02128       free_msg(msg);
02129    }
02130 
02131 
02132    return 0;
02133 }
02134 
02135 
02136 static int handle_timers(msg_t* msg)
02137 {
02138    iframe_t *frm= (iframe_t*)msg->data;
02139    struct misdn_stack *stack; 
02140   
02141    /* Timer Stuff */
02142    switch (frm->prim) {
02143    case MGR_INITTIMER | CONFIRM:
02144    case MGR_ADDTIMER | CONFIRM:
02145    case MGR_DELTIMER | CONFIRM:
02146    case MGR_REMOVETIMER | CONFIRM:
02147       free_msg(msg);
02148       return(1);
02149    }
02150   
02151   
02152   
02153    if (frm->prim==(MGR_TIMER | INDICATION) ) {
02154       for (stack = glob_mgr->stack_list;
02155            stack;
02156            stack = stack->next) {
02157          itimer_t *it;
02158       
02159          if (!stack->nt) continue;
02160       
02161          it = stack->nst.tlist;
02162          /* find timer */
02163          for(it=stack->nst.tlist;
02164              it;
02165              it=it->next) {
02166             if (it->id == (int)frm->addr)
02167                break;
02168          }
02169          if (it) {
02170             int ret;
02171             ret = mISDN_write_frame(stack->midev, msg->data, frm->addr,
02172                      MGR_TIMER | RESPONSE, 0, 0, NULL, TIMEOUT_1SEC);
02173             test_and_clear_bit(FLG_TIMER_RUNING, (long unsigned int *)&it->Flags);
02174             ret = it->function(it->data);
02175             free_msg(msg);
02176             return 1;
02177          }
02178       }
02179     
02180       cb_log(0, 0, "Timer Msg without Timer ??\n");
02181       free_msg(msg);
02182       return 1;
02183    }
02184   
02185    return 0;
02186 }
02187 
02188 
02189 
02190 void misdn_lib_tone_generator_start(struct misdn_bchannel *bc)
02191 {
02192    bc->generate_tone=1;
02193 }
02194 
02195 void misdn_lib_tone_generator_stop(struct misdn_bchannel *bc)
02196 {
02197    bc->generate_tone=0;
02198 }
02199 
02200 
02201 static int do_tone(struct misdn_bchannel *bc, int len)
02202 {
02203    bc->tone_cnt=len;
02204    
02205    if (bc->generate_tone) {
02206       cb_event(EVENT_TONE_GENERATE, bc, glob_mgr->user_data);
02207       
02208       if ( !bc->nojitter ) {
02209          misdn_tx_jitter(bc,len);
02210       }
02211       
02212       return 1;
02213    }
02214    
02215    return 0;
02216 }
02217 
02218 
02219 #ifdef MISDN_SAVE_DATA
02220 static void misdn_save_data(int id, char *p1, int l1, char *p2, int l2) 
02221 {
02222    char n1[32],n2[32];
02223    FILE *rx, *tx;
02224 
02225    sprintf(n1,"/tmp/misdn-rx-%d.raw",id);
02226    sprintf(n2,"/tmp/misdn-tx-%d.raw",id);
02227 
02228    rx = fopen(n1,"a+"); 
02229    tx = fopen(n2,"a+");
02230 
02231    if (!rx || !tx) {
02232       cb_log(0,0,"Couldn't open files: %s\n",strerror(errno));
02233       return ;
02234    }
02235    
02236    fwrite(p1,1,l1,rx);
02237    fwrite(p2,1,l2,tx);
02238    
02239    fclose(rx);
02240    fclose(tx);
02241 
02242 }
02243 #endif
02244 
02245 void misdn_tx_jitter(struct misdn_bchannel *bc, int len)
02246 {
02247    char buf[4096 + mISDN_HEADER_LEN];
02248    char *data=&buf[mISDN_HEADER_LEN];
02249    iframe_t *txfrm= (iframe_t*)buf;
02250    int jlen, r;
02251    
02252    jlen=cb_jb_empty(bc,data,len);
02253    
02254    if (jlen) {
02255 #ifdef MISDN_SAVE_DATA
02256       misdn_save_data((bc->port*100+bc->channel), data, jlen, bc->bframe, bc->bframe_len);
02257 #endif
02258       flip_buf_bits( data, jlen);
02259       
02260       if (jlen < len) {
02261          cb_log(1, bc->port, "Jitterbuffer Underrun. Got %d of expected %d\n", jlen, len);
02262       }
02263       
02264       txfrm->prim = DL_DATA|REQUEST;
02265       
02266       txfrm->dinfo = 0;
02267       
02268       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02269       
02270       txfrm->len =jlen;
02271       cb_log(9, bc->port, "Transmitting %d samples 2 misdn\n", txfrm->len);
02272 
02273       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02274    } else {
02275 #define MISDN_GEN_SILENCE
02276 #ifdef MISDN_GEN_SILENCE
02277       int cnt=len/TONE_SILENCE_SIZE;
02278       int rest=len%TONE_SILENCE_SIZE;
02279       int i;
02280 
02281       for (i=0; i<cnt; i++) {
02282          memcpy(data, tone_silence_flip, TONE_SILENCE_SIZE );
02283          data +=TONE_SILENCE_SIZE;
02284       }
02285 
02286       if (rest) {
02287          memcpy(data, tone_silence_flip, rest);
02288       }
02289 
02290       txfrm->prim = DL_DATA|REQUEST;
02291 
02292       txfrm->dinfo = 0;
02293 
02294       txfrm->addr = bc->addr|FLG_MSG_DOWN; /*  | IF_DOWN; */
02295 
02296       txfrm->len =len;
02297       cb_log(5, bc->port, "Transmitting %d samples of silence to misdn\n", len);
02298 
02299       r=mISDN_write( glob_mgr->midev, buf, txfrm->len + mISDN_HEADER_LEN, 8000 );
02300 #else
02301       r = 0;
02302 #endif
02303    }
02304 
02305    if (r < 0) {
02306       cb_log(1, bc->port, "Error in mISDN_write (%s)\n", strerror(errno));
02307    }
02308 }
02309 
02310 static int handle_bchan(msg_t *msg)
02311 {
02312    iframe_t *frm= (iframe_t*)msg->data;
02313    struct misdn_bchannel *bc=find_bc_by_addr(frm->addr);
02314    struct misdn_stack *stack;
02315    
02316    if (!bc) {
02317       cb_log(1,0,"handle_bchan: BC not found for prim:%x with addr:%x dinfo:%x\n", frm->prim, frm->addr, frm->dinfo);
02318       return 0 ;
02319    }
02320    
02321    stack = get_stack_by_bc(bc);
02322    
02323    if (!stack) {
02324       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);
02325       return 0;
02326    }
02327    
02328    switch (frm->prim) {
02329 
02330    case MGR_SETSTACK| CONFIRM:
02331       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|CONFIRM pid:%d\n",bc->pid);
02332       break;
02333       
02334    case MGR_SETSTACK| INDICATION:
02335       cb_log(3, stack->port, "BCHAN: MGR_SETSTACK|IND pid:%d\n",bc->pid);
02336    break;
02337 #if 0
02338    AGAIN:
02339       bc->addr = mISDN_get_layerid(stack->midev, bc->b_stid, bc->layer);
02340       if (!bc->addr) {
02341 
02342          if (errno == EAGAIN) {
02343             usleep(1000);
02344             goto AGAIN;
02345          }
02346          
02347          cb_log(0,stack->port,"$$$ Get Layer (%d) Id Error: %s\n",bc->layer,strerror(errno));
02348          
02349          /* we kill the channel later, when we received some
02350             data. */
02351          bc->addr= frm->addr;
02352       } else if ( bc->addr < 0) {
02353          cb_log(0, stack->port,"$$$ bc->addr <0 Error:%s\n",strerror(errno));
02354          bc->addr=0;
02355       }
02356       
02357       cb_log(4, stack->port," --> Got Adr %x\n", bc->addr);
02358 
02359       free_msg(msg);
02360    
02361       
02362       switch(bc->bc_state) {
02363       case BCHAN_SETUP:
02364          bc_state_change(bc,BCHAN_SETUPED);
02365       break;
02366 
02367       case BCHAN_CLEAN_REQUEST:
02368       default:
02369          cb_log(0, stack->port," --> STATE WASN'T SETUP (but %s) in SETSTACK|IND pid:%d\n",bc_state2str(bc->bc_state), bc->pid);
02370          clean_up_bc(bc);
02371       }
02372       return 1;
02373 #endif
02374 
02375    case MGR_DELLAYER| INDICATION:
02376       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|IND pid:%d\n",bc->pid);
02377       break;
02378       
02379    case MGR_DELLAYER| CONFIRM:
02380       cb_log(3, stack->port, "BCHAN: MGR_DELLAYER|CNF pid:%d\n",bc->pid);
02381       
02382       bc->pid=0;
02383       bc->addr=0;
02384       
02385       free_msg(msg);
02386       return 1;
02387       
02388    case PH_ACTIVATE | INDICATION:
02389    case DL_ESTABLISH | INDICATION:
02390       cb_log(3, stack->port, "BCHAN: ACT Ind pid:%d\n", bc->pid);
02391 
02392       free_msg(msg);
02393       return 1;    
02394 
02395    case PH_ACTIVATE | CONFIRM:
02396    case DL_ESTABLISH | CONFIRM:
02397       
02398       cb_log(3, stack->port, "BCHAN: bchan ACT Confirm pid:%d\n",bc->pid);
02399       free_msg(msg);
02400       
02401       return 1;    
02402 
02403    case DL_ESTABLISH | REQUEST:
02404       {
02405          char buf[128];
02406          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_ESTABLISH | CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02407       }
02408       free_msg(msg);
02409       return 1;
02410 
02411    case DL_RELEASE|REQUEST:
02412       {
02413          char buf[128];
02414          mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_TARGET | FLG_MSG_DOWN,  DL_RELEASE| CONFIRM, 0,0, NULL, TIMEOUT_1SEC);
02415       }
02416       free_msg(msg);
02417       return 1;
02418       
02419    case PH_DEACTIVATE | INDICATION:
02420    case DL_RELEASE | INDICATION:
02421       cb_log (3, stack->port, "BCHAN: DeACT Ind pid:%d\n",bc->pid);
02422       
02423       free_msg(msg);
02424       return 1;
02425     
02426    case PH_DEACTIVATE | CONFIRM:
02427    case DL_RELEASE | CONFIRM:
02428       cb_log(3, stack->port, "BCHAN: DeACT Conf pid:%d\n",bc->pid);
02429       
02430       free_msg(msg);
02431       return 1;
02432     
02433    case PH_CONTROL|INDICATION:
02434    {
02435       unsigned int *cont = (unsigned int *) &frm->data.p;
02436       
02437       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);
02438 
02439       if ((*cont & ~DTMF_TONE_MASK) == DTMF_TONE_VAL) {
02440          int dtmf = *cont & DTMF_TONE_MASK;
02441          cb_log(4, stack->port, " --> DTMF TONE: %c\n",dtmf);
02442          bc->dtmf=dtmf;
02443          cb_event(EVENT_DTMF_TONE, bc, glob_mgr->user_data);
02444    
02445          free_msg(msg);
02446          return 1;
02447       }
02448       if (*cont == BF_REJECT) {
02449          cb_log(4, stack->port, " --> BF REJECT\n");
02450          free_msg(msg);
02451          return 1;
02452       }
02453       if (*cont == BF_ACCEPT) {
02454          cb_log(4, stack->port, " --> BF ACCEPT\n");
02455          free_msg(msg);
02456          return 1;
02457       }
02458    }
02459    break;
02460 
02461    case PH_DATA|REQUEST:
02462    case DL_DATA|REQUEST:
02463       cb_log(0, stack->port, "DL_DATA REQUEST \n");
02464       do_tone(bc, 64);
02465       
02466       free_msg(msg);
02467       return 1;
02468    
02469    
02470    case PH_DATA|INDICATION:
02471    case DL_DATA|INDICATION:
02472    {
02473       bc->bframe = (void*)&frm->data.i;
02474       bc->bframe_len = frm->len;
02475 
02476       /** Anyway flip the bufbits **/
02477       if ( misdn_cap_is_speech(bc->capability) ) 
02478          flip_buf_bits(bc->bframe, bc->bframe_len);
02479    
02480 
02481       if (!bc->bframe_len) {
02482          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02483          free_msg(msg);
02484          return 1;
02485       }
02486 
02487       if ( (bc->addr&STACK_ID_MASK) != (frm->addr&STACK_ID_MASK) ) {
02488          cb_log(2, stack->port, "DL_DATA INDICATION bc->addr:%x frm->addr:%x\n", bc->addr, frm->addr);
02489          free_msg(msg);
02490          return 1;
02491       }
02492       
02493 #if MISDN_DEBUG
02494       cb_log(0, stack->port, "DL_DATA INDICATION Len %d\n", frm->len);
02495 
02496 #endif
02497       
02498       if ( (bc->bc_state == BCHAN_ACTIVATED) && frm->len > 0) {
02499          int t;
02500 
02501 #ifdef MISDN_B_DEBUG
02502          cb_log(0,bc->port,"do_tone START\n");
02503 #endif
02504          t=do_tone(bc,frm->len);
02505 
02506 #ifdef MISDN_B_DEBUG
02507          cb_log(0,bc->port,"do_tone STOP (%d)\n",t);
02508 #endif
02509          if (  !t ) {
02510             int i;
02511             
02512             if ( misdn_cap_is_speech(bc->capability)) {
02513                if ( !bc->nojitter ) {
02514 #ifdef MISDN_B_DEBUG
02515                   cb_log(0,bc->port,"tx_jitter START\n");
02516 #endif
02517                   misdn_tx_jitter(bc,frm->len);
02518 #ifdef MISDN_B_DEBUG
02519                   cb_log(0,bc->port,"tx_jitter STOP\n");
02520 #endif
02521                }
02522             }
02523 
02524 #ifdef MISDN_B_DEBUG 
02525             cb_log(0,bc->port,"EVENT_B_DATA START\n");
02526 #endif
02527             
02528             i = cb_event(EVENT_BCHAN_DATA, bc, glob_mgr->user_data);
02529 #ifdef MISDN_B_DEBUG 
02530             cb_log(0,bc->port,"EVENT_B_DATA STOP\n");
02531 #endif
02532             
02533             if (i<0) {
02534                cb_log(10,stack->port,"cb_event returned <0\n");
02535                /*clean_up_bc(bc);*/
02536             }
02537          }
02538       }
02539       free_msg(msg);
02540       return 1;
02541    }
02542 
02543 
02544    case PH_CONTROL | CONFIRM:
02545       cb_log(4, stack->port, "PH_CONTROL|CNF bc->addr:%x\n", frm->addr);
02546       free_msg(msg);
02547       return 1;
02548 
02549    case PH_DATA | CONFIRM:
02550    case DL_DATA|CONFIRM:
02551 #if MISDN_DEBUG
02552 
02553       cb_log(0, stack->port, "Data confirmed\n");
02554 
02555 #endif
02556       free_msg(msg);
02557       return 1;
02558    case DL_DATA|RESPONSE:
02559 #if MISDN_DEBUG
02560       cb_log(0, stack->port, "Data response\n");
02561 
02562 #endif
02563       break;
02564    }
02565   
02566    return 0;
02567 }
02568 
02569 
02570 
02571 static int handle_frm_nt(msg_t *msg)
02572 {
02573    iframe_t *frm= (iframe_t*)msg->data;
02574    struct misdn_stack *stack;
02575    int err=0;
02576 
02577    stack=find_stack_by_addr( frm->addr );
02578 
02579    
02580   
02581    if (!stack || !stack->nt) {
02582       return 0;
02583    }
02584 
02585    
02586    if ((err=stack->nst.l1_l2(&stack->nst,msg))) {
02587     
02588       if (nt_err_cnt > 0 ) {
02589          if (nt_err_cnt < 100) {
02590             nt_err_cnt++; 
02591             cb_log(0, stack->port, "NT Stack sends us error: %d \n", err);
02592          } else if (nt_err_cnt < 105){
02593             cb_log(0, stack->port, "NT Stack sends us error: %d over 100 times, so I'll stop this message\n", err);
02594             nt_err_cnt = - 1; 
02595          }
02596       }
02597       free_msg(msg);
02598       return 1;
02599       
02600    }
02601    
02602    return 1;
02603 }
02604 
02605 
02606 static int handle_frm(msg_t *msg)
02607 {
02608    iframe_t *frm = (iframe_t*) msg->data;
02609    
02610    struct misdn_stack *stack=find_stack_by_addr(frm->addr);
02611 
02612    if (!stack || stack->nt) {
02613       return 0;
02614    }
02615    
02616    cb_log(4,stack?stack->port:0,"handle_frm: frm->addr:%x frm->prim:%x\n",frm->addr,frm->prim);
02617 
02618    {
02619       struct misdn_bchannel dummybc;
02620       struct misdn_bchannel *bc;
02621       int ret=handle_cr(stack, frm);
02622 
02623       if (ret<0) {
02624          cb_log(3,stack?stack->port:0,"handle_frm: handle_cr <0 prim:%x addr:%x\n", frm->prim, frm->addr);
02625 
02626 
02627       }
02628 
02629       if(ret) {
02630          free_msg(msg);
02631          return 1;
02632       }
02633     
02634       bc=find_bc_by_l3id(stack, frm->dinfo);
02635 
02636       if (!bc && (frm->prim==(CC_RESTART|CONFIRM)) ) {
02637          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02638          bc=&dummybc;
02639       }
02640 
02641       if (!bc && (frm->prim==(CC_SETUP|INDICATION)) ) {
02642          misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
02643          dummybc.port=stack->port;
02644          dummybc.l3_id=frm->dinfo;
02645          bc=&dummybc;
02646 
02647          misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02648 
02649          free_msg(msg);
02650          return 1;
02651       }
02652 
02653     
02654 handle_frm_bc:
02655       if (bc ) {
02656          enum event_e event = isdn_msg_get_event(msgs_g, msg, 0);
02657          enum event_response_e response=RESPONSE_OK;
02658          int ret;
02659       
02660          isdn_msg_parse_event(msgs_g,msg,bc, 0);
02661          
02662          /** Preprocess some Events **/
02663          ret = handle_event(bc, event, frm);
02664          if (ret<0) {
02665             cb_log(0,stack->port,"couldn't handle event\n");
02666             free_msg(msg);
02667             return 1;
02668          }
02669          /*  shoot up event to App: */
02670          cb_log(5, stack->port, "lib Got Prim: Addr %x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02671       
02672          if(!isdn_get_info(msgs_g,event,0)) 
02673             cb_log(0, stack->port, "Unknown Event Ind: Addr:%x prim %x dinfo %x\n",frm->addr, frm->prim, frm->dinfo);
02674          else
02675             response=cb_event(event, bc, glob_mgr->user_data);
02676 #if 1
02677          if (event == EVENT_SETUP) {
02678             switch (response) {
02679             case RESPONSE_IGNORE_SETUP_WITHOUT_CLOSE:
02680 
02681                cb_log(0, stack->port, "TOTALLY IGNORING SETUP\n");               
02682                
02683                break;
02684             case RESPONSE_IGNORE_SETUP:
02685                /* I think we should send CC_RELEASE_CR, but am not sure*/
02686                bc->out_cause = AST_CAUSE_NORMAL_CLEARING;
02687             
02688             case RESPONSE_RELEASE_SETUP:
02689                misdn_lib_send_event(bc,EVENT_RELEASE_COMPLETE);
02690                if (bc->channel>0)
02691                   empty_chan_in_stack(stack, bc->channel);
02692                empty_bc(bc);
02693                bc_state_change(bc,BCHAN_CLEANED);
02694                bc->in_use=0;
02695 
02696                cb_log(0, stack->port, "GOT IGNORE SETUP\n");
02697                break;
02698             case RESPONSE_OK:
02699                cb_log(4, stack->port, "GOT SETUP OK\n");
02700 
02701                
02702                break;
02703             default:
02704                break;
02705             }
02706          }
02707 
02708          if (event == EVENT_RELEASE_COMPLETE) {
02709             /* release bchannel only after we've announced the RELEASE_COMPLETE */
02710             int channel=bc->channel;
02711             int tmpcause=bc->cause; 
02712             int tmp_out_cause=bc->out_cause; 
02713             empty_bc(bc);
02714             bc->cause=tmpcause;
02715             bc->out_cause=tmp_out_cause;
02716             clean_up_bc(bc);
02717             
02718             if (tmpcause == AST_CAUSE_REQUESTED_CHAN_UNAVAIL) {
02719                cb_log(0,stack->port,"**** Received CAUSE:%d, so not cleaning up channel %d\n", AST_CAUSE_REQUESTED_CHAN_UNAVAIL, channel);
02720                cb_log(0,stack->port,"**** This channel is now no longer available,\nplease try to restart it with 'misdn send restart <port> <channel>'\n");
02721                set_chan_in_stack(stack, channel);
02722                bc->channel=channel;
02723                misdn_lib_send_restart(stack->port, channel);
02724             } else {
02725                if (channel>0)
02726                   empty_chan_in_stack(stack, channel);
02727             }
02728             bc->in_use=0;
02729          }
02730 
02731          if (event == EVENT_RESTART) {
02732             cb_log(0, stack->port, "**** Received RESTART_ACK channel:%d\n", bc->restart_channel);
02733             empty_chan_in_stack(stack, bc->restart_channel);
02734          }
02735 
02736          cb_log(5, stack->port, "Freeing Msg on prim:%x \n",frm->prim);
02737 
02738          
02739          free_msg(msg);
02740          return 1;
02741 #endif
02742       
02743       } else {
02744          struct misdn_bchannel dummybc;
02745          cb_log(0, stack->port, " --> Didn't find BC so temporarily creating dummy BC (l3id:%x) on this port.\n", frm->dinfo);
02746          memset (&dummybc,0,sizeof(dummybc));
02747          dummybc.port=stack->port;
02748          dummybc.l3_id=frm->dinfo;
02749          bc=&dummybc; 
02750          goto handle_frm_bc;
02751       }
02752    }
02753 
02754    cb_log(4, stack->port, "TE_FRM_HANDLER: Returning 0 on prim:%x \n",frm->prim);
02755    return 0;
02756 }
02757 
02758 
02759 static int handle_l1(msg_t *msg)
02760 {
02761    iframe_t *frm = (iframe_t*) msg->data;
02762    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02763    int i ;
02764    
02765    if (!stack) return 0 ;
02766 
02767    switch (frm->prim) {
02768    case PH_ACTIVATE | CONFIRM:
02769    case PH_ACTIVATE | INDICATION:
02770       cb_log (3, stack->port, "L1: PH L1Link Up!\n");
02771       stack->l1link=1;
02772       
02773       if (stack->nt) {
02774          
02775          if (stack->nst.l1_l2(&stack->nst, msg))
02776             free_msg(msg);
02777 
02778          if (stack->ptp)
02779             misdn_lib_get_l2_up(stack);
02780       } else {
02781          free_msg(msg);
02782       }
02783       
02784       for (i=0;i<=stack->b_num; i++) {
02785          if (stack->bc[i].evq != EVENT_NOTHING) {
02786             cb_log(4, stack->port, "Firing Queued Event %s because L1 got up\n", isdn_get_info(msgs_g, stack->bc[i].evq, 0));
02787             misdn_lib_send_event(&stack->bc[i],stack->bc[i].evq);
02788             stack->bc[i].evq=EVENT_NOTHING;
02789          }
02790          
02791       }
02792       return 1;
02793 
02794    case PH_ACTIVATE | REQUEST:
02795       free_msg(msg);
02796       cb_log(3,stack->port,"L1: PH_ACTIVATE|REQUEST \n");
02797       return 1;
02798       
02799    case PH_DEACTIVATE | REQUEST:
02800       free_msg(msg);
02801       cb_log(3,stack->port,"L1: PH_DEACTIVATE|REQUEST \n");
02802       return 1;
02803       
02804    case PH_DEACTIVATE | CONFIRM:
02805    case PH_DEACTIVATE | INDICATION:
02806       cb_log (3, stack->port, "L1: PH L1Link Down! \n");
02807    
02808 #if 0
02809       for (i=0; i<=stack->b_num; i++) {
02810          if (global_state == MISDN_INITIALIZED)  {
02811             cb_event(EVENT_CLEANUP, &stack->bc[i], glob_mgr->user_data);
02812          }
02813       }
02814 #endif
02815       
02816       if (stack->nt) {
02817          if (stack->nst.l1_l2(&stack->nst, msg))
02818             free_msg(msg);
02819       } else {
02820          free_msg(msg);
02821       }
02822       
02823       stack->l1link=0;
02824       stack->l2link=0;
02825       return 1;
02826    }
02827   
02828    return 0;
02829 }
02830 
02831 static int handle_l2(msg_t *msg)
02832 {
02833    iframe_t *frm = (iframe_t*) msg->data;
02834 
02835    struct misdn_stack *stack = find_stack_by_addr(frm->addr);
02836    
02837    if (!stack) {
02838       return 0 ;
02839    }
02840    
02841    switch(frm->prim) {
02842 
02843    case DL_ESTABLISH | REQUEST:
02844       cb_log(1,stack->port,"DL_ESTABLISH|REQUEST \n");
02845       return 1;
02846    case DL_RELEASE | REQUEST:
02847       cb_log(1,stack->port,"DL_RELEASE|REQUEST \n");
02848       return 1;
02849       
02850    case DL_ESTABLISH | INDICATION:
02851    case DL_ESTABLISH | CONFIRM:
02852    {
02853       cb_log (3, stack->port, "L2: L2Link Up! \n");
02854       if (stack->ptp && stack->l2link) {
02855          cb_log (-1, stack->port, "L2: L2Link Up! but it's already UP.. must be faulty, blocking port\n"); 
02856          cb_event(EVENT_PORT_ALARM, &stack->bc[0], glob_mgr->user_data);
02857       }
02858       stack->l2link=1;
02859       free_msg(msg);
02860       return 1;
02861    }
02862    break;
02863     
02864    case DL_RELEASE | INDICATION:
02865    case DL_RELEASE | CONFIRM:
02866    {
02867       cb_log (3, stack->port, "L2: L2Link Down! \n");
02868       stack->l2link=0;
02869       
02870       free_msg(msg);
02871       return 1;
02872    }
02873    break;
02874    }
02875    return 0;
02876 }
02877 
02878 static int handle_mgmt(msg_t *msg)
02879 {
02880    iframe_t *frm = (iframe_t*) msg->data;
02881    struct misdn_stack *stack;
02882 
02883    if ( (frm->addr == 0) && (frm->prim == (MGR_DELLAYER|CONFIRM)) ) {
02884       cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: 0 !\n") ;
02885       free_msg(msg);
02886       return 1;
02887    }
02888    
02889    stack = find_stack_by_addr(frm->addr);
02890    
02891    if (!stack) {
02892       if (frm->prim == (MGR_DELLAYER|CONFIRM)) {
02893          cb_log(2, 0, "MGMT: DELLAYER|CONFIRM Addr: %x !\n",
02894                frm->addr) ;
02895          free_msg(msg);
02896          return 1;
02897       }
02898       
02899       return 0;
02900    }
02901    
02902    switch(frm->prim) {
02903    case MGR_SHORTSTATUS | INDICATION:
02904    case MGR_SHORTSTATUS | CONFIRM:
02905       cb_log(5, 0, "MGMT: Short status dinfo %x\n",frm->dinfo);
02906       
02907       switch (frm->dinfo) {
02908       case SSTATUS_L1_ACTIVATED:
02909          cb_log(3, 0, "MGMT: SSTATUS: L1_ACTIVATED \n");
02910          stack->l1link=1;
02911       
02912          break;
02913       case SSTATUS_L1_DEACTIVATED:
02914          cb_log(3, 0, "MGMT: SSTATUS: L1_DEACTIVATED \n");
02915          stack->l1link=0;
02916 #if 0
02917          clear_l3(stack);
02918 #endif
02919          break;
02920 
02921       case SSTATUS_L2_ESTABLISHED:
02922          cb_log(3, stack->port, "MGMT: SSTATUS: L2_ESTABLISH \n");
02923 
02924          /*when the L2 goes UP, L1 needs to be UP too*/
02925          stack->l1link=1;
02926          stack->l2link=1;
02927          break;
02928          
02929       case SSTATUS_L2_RELEASED:
02930          cb_log(3, stack->port, "MGMT: SSTATUS: L2_RELEASED \n");
02931          stack->l2link=0;
02932          break;
02933       }
02934       
02935       free_msg(msg);
02936       return 1;
02937       
02938    case MGR_SETSTACK | INDICATION:
02939       cb_log(4, stack->port, "MGMT: SETSTACK|IND dinfo %x\n",frm->dinfo);
02940       free_msg(msg);
02941       return 1;
02942    case MGR_DELLAYER | CONFIRM:
02943       cb_log(4, stack->port, "MGMT: DELLAYER|CNF dinfo %x\n",frm->dinfo) ;
02944       free_msg(msg);
02945       return 1;
02946       
02947    }
02948    
02949    /*
02950    if ( (frm->prim & 0x0f0000) ==  0x0f0000) {
02951    cb_log(5, 0, "$$$ MGMT FRAME: prim %x addr %x dinfo %x\n",frm->prim, frm->addr, frm->dinfo) ;
02952    free_msg(msg);
02953    return 1;
02954    } */
02955     
02956    return 0;
02957 }
02958 
02959 
02960 static msg_t *fetch_msg(int midev) 
02961 {
02962    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
02963    int r;
02964 
02965    if (!msg) {
02966       cb_log(0, 0, "fetch_msg: alloc msg failed !!");
02967       return NULL;
02968    }
02969 
02970    AGAIN:
02971       r=mISDN_read(midev,msg->data,MAX_MSG_SIZE, TIMEOUT_10SEC);
02972       msg->len=r;
02973     
02974       if (r==0) {
02975          free_msg(msg); /* danger, cause usually freeing in main_loop */
02976          cb_log(6,0,"Got empty Msg..\n");
02977          return NULL;
02978       }
02979 
02980       if (r<0) {
02981          if (errno == EAGAIN) {
02982             /*we wait for mISDN here*/
02983             cb_log(4,0,"mISDN_read wants us to wait\n");
02984             usleep(5000);
02985             goto AGAIN;
02986          }
02987          
02988          cb_log(0,0,"mISDN_read returned :%d error:%s (%d)\n",r,strerror(errno),errno); 
02989       }
02990 
02991 #if 0
02992                if  (!(frm->prim == (DL_DATA|INDICATION) )|| (frm->prim == (PH_DATA|INDICATION)))
02993                        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 );
02994 #endif
02995       return msg;
02996 }
02997 
02998 void misdn_lib_isdn_l1watcher(int port)
02999 {
03000    struct misdn_stack *stack;
03001 
03002    for (stack = glob_mgr->stack_list; stack && (stack->port != port); stack = stack->next)
03003       ;
03004 
03005    if (stack) {
03006       cb_log(4, port, "Checking L1 State\n");   
03007       if (!stack->l1link) {
03008          cb_log(4, port, "L1 State Down, trying to get it up again\n"); 
03009          misdn_lib_get_short_status(stack);
03010          misdn_lib_get_l1_up(stack); 
03011          misdn_lib_get_l2_up(stack); 
03012       }
03013    }
03014 }
03015 
03016 /* This is a thread */
03017 static void misdn_lib_isdn_event_catcher(void *arg)
03018 {
03019    struct misdn_lib *mgr = arg;
03020    int zero_frm=0 , fff_frm=0 ;
03021    int midev= mgr->midev;
03022    int port=0;
03023    
03024    while (1) {
03025       msg_t *msg = fetch_msg(midev); 
03026       iframe_t *frm;
03027       
03028       
03029       if (!msg) continue;
03030       
03031       frm = (iframe_t*) msg->data;
03032       
03033       /** When we make a call from NT2Ast we get these frames **/
03034       if (frm->len == 0 && frm->addr == 0 && frm->dinfo == 0 && frm->prim == 0 ) {
03035          zero_frm++; 
03036          free_msg(msg);
03037          continue;
03038       } else {
03039          if (zero_frm) {
03040             cb_log(0, port, "*** Alert: %d zero_frms caught\n", zero_frm);
03041             zero_frm = 0 ;
03042          }
03043       }
03044       
03045       /** I get this sometimes after setup_bc **/
03046       if (frm->len == 0 &&  frm->dinfo == 0 && frm->prim == 0xffffffff ) {
03047          fff_frm++; 
03048          free_msg(msg);
03049          continue;
03050       } else {
03051          if (fff_frm) {
03052             cb_log(0, port, "*** Alert: %d fff_frms caught\n", fff_frm);
03053             fff_frm = 0 ;
03054          }
03055       }
03056       
03057       manager_isdn_handler(frm, msg);
03058    }
03059 
03060 }
03061 
03062 
03063 /** App Interface **/
03064 
03065 int te_lib_init() {
03066    char buff[1025] = "";
03067    iframe_t *frm=(iframe_t*)buff;
03068    int midev=mISDN_open();
03069    int ret;
03070 
03071    if  (midev<=0) return midev;
03072   
03073 /* create entity for layer 3 TE-mode */
03074    mISDN_write_frame(midev, buff, 0, MGR_NEWENTITY | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
03075    ret = mISDN_read_frame(midev, frm, sizeof(iframe_t), 0, MGR_NEWENTITY | CONFIRM, TIMEOUT_1SEC);
03076   
03077    if (ret < mISDN_HEADER_LEN) {
03078    noentity:
03079       fprintf(stderr, "cannot request MGR_NEWENTITY from mISDN: %s\n",strerror(errno));
03080       exit(-1);
03081    }
03082   
03083    entity = frm->dinfo & 0xffff ;
03084   
03085    if (!entity)
03086       goto noentity;
03087 
03088    return midev;
03089   
03090 }
03091 
03092 void te_lib_destroy(int midev)
03093 {
03094    char buf[1024];
03095    mISDN_write_frame(midev, buf, 0, MGR_DELENTITY | REQUEST, entity, 0, NULL, TIMEOUT_1SEC);
03096 
03097    cb_log(4, 0, "Entity deleted\n");
03098    mISDN_close(midev);
03099    cb_log(4, 0, "midev closed\n");
03100 }
03101 
03102 
03103 
03104 void misdn_lib_transfer(struct misdn_bchannel* holded_bc)
03105 {
03106    holded_bc->holded=0;
03107 }
03108 
03109 struct misdn_bchannel *manager_find_bc_by_pid(int pid)
03110 {
03111    struct misdn_stack *stack;
03112    int i;
03113   
03114    for (stack=glob_mgr->stack_list;
03115         stack;
03116         stack=stack->next) {
03117       for (i=0; i<=stack->b_num; i++)
03118          if (stack->bc[i].pid == pid) return &stack->bc[i];
03119    }
03120   
03121    return NULL;
03122 }
03123 
03124 struct misdn_bchannel *manager_find_bc_holded(struct misdn_bchannel* bc)
03125 {
03126    struct misdn_stack *stack=get_stack_by_bc(bc);
03127    return find_bc_holded(stack);
03128 }
03129 
03130 
03131 
03132 static int test_inuse(struct misdn_bchannel *bc)
03133 {
03134    struct timeval now;
03135    gettimeofday(&now, NULL);
03136    if (!bc->in_use) {
03137       if (misdn_lib_port_is_pri(bc->port) && bc->last_used.tv_sec == now.tv_sec ) {
03138          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);
03139          return 1;
03140       }
03141       
03142 
03143       cb_log(3,bc->port, "channel with stid:%x not in use!\n", bc->b_stid);
03144       return 0;
03145    }
03146    
03147    cb_log(2,bc->port, "channel with stid:%x in use!\n", bc->b_stid);
03148    return 1;
03149 }
03150 
03151 
03152 static void prepare_bc(struct misdn_bchannel*bc, int channel)
03153 {
03154    bc->channel = channel;
03155    bc->channel_preselected = channel?1:0;
03156    bc->in_use = 1;
03157    bc->need_disconnect=1;
03158    bc->need_release=1;
03159    bc->need_release_complete=1;
03160    bc->cause = AST_CAUSE_NORMAL_CLEARING;
03161 
03162    if (++mypid>5000) mypid=1;
03163    bc->pid=mypid;
03164 
03165 #if 0
03166    bc->addr=0;
03167    bc->b_stid=0;
03168    bc->layer_id=0;
03169 #endif
03170 }
03171 
03172 struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel, int inout, int dec)
03173 {
03174    struct misdn_stack *stack;
03175    int i;
03176    
03177    if (channel < 0 || channel > MAX_BCHANS) {
03178       cb_log(0,port,"Requested channel out of bounds (%d)\n",channel);
03179       return NULL;
03180    }
03181 
03182    usleep(1000);
03183 
03184    for (stack=glob_mgr->stack_list; stack; stack=stack->next) {
03185     
03186       if (stack->port == port) {
03187          int maxnum;
03188 
03189          if (stack->blocked) {
03190             cb_log(0,port,"Port is blocked\n");
03191             return NULL;
03192          }
03193       
03194          if (channel > 0) {
03195             if (channel <= stack->b_num) {
03196                for (i = 0; i < stack->b_num; i++) {
03197                   if ( stack->bc[i].channel == channel) {
03198                      if (test_inuse(&stack->bc[i])) { 
03199                         cb_log(0,port,"Requested channel:%d on port:%d is already in use\n",channel, port);
03200                         return NULL;
03201 
03202                      } else {
03203                         prepare_bc(&stack->bc[i], channel);
03204                         return &stack->bc[i];
03205                      }
03206                   }
03207                }
03208             } else {
03209                cb_log(0,port,"Requested channel:%d is out of bounds on port:%d\n",channel, port);
03210                return NULL;
03211             }
03212          }
03213 
03214          maxnum = inout && !stack->pri && !stack->ptp ? stack->b_num + 1 : stack->b_num;
03215 
03216          if (dec) {
03217             for (i = maxnum-1; i>=0; i--) {
03218                if (!test_inuse(&stack->bc[i])) {
03219                   /* 3. channel on bri means CW*/
03220                   if (!stack->pri && i==stack->b_num)
03221                      stack->bc[i].cw=1;
03222                      
03223                   prepare_bc(&stack->bc[i], channel);
03224                   stack->bc[i].dec=1;
03225                   return &stack->bc[i];
03226                }
03227             }
03228          } else {
03229             for (i = 0; i <maxnum; i++) {
03230                if (!test_inuse(&stack->bc[i])) {
03231                   /* 3. channel on bri means CW*/
03232                   if (!stack->pri && i==stack->b_num)
03233                      stack->bc[i].cw=1;
03234 
03235                   prepare_bc(&stack->bc[i], channel);
03236                   return &stack->bc[i];
03237                }
03238             }
03239          }
03240 
03241          cb_log(1,port,"There is no free channel on port (%d)\n",port);
03242          return NULL;
03243       }
03244    }
03245 
03246    cb_log(0,port,"Port is not configured (%d)\n",port);
03247    return NULL;
03248 }
03249 
03250 
03251 
03252 
03253 /* ******************************************************************* */
03254 /*!
03255  * \internal
03256  * \brief Convert the facility function enum value into a string.
03257  *
03258  * \return String version of the enum value
03259  */
03260 static const char *fac2str(enum FacFunction facility)
03261 {
03262    static const struct { 
03263       enum FacFunction facility; 
03264       char *name;
03265    } arr[] = {
03266 /* *INDENT-OFF* */
03267       { Fac_None, "Fac_None" },
03268       { Fac_GetSupportedServices, "Fac_GetSupportedServices" },
03269       { Fac_Listen, "Fac_Listen" },
03270       { Fac_Suspend, "Fac_Suspend" },
03271       { Fac_Resume, "Fac_Resume" },
03272       { Fac_CFActivate, "Fac_CFActivate" },
03273       { Fac_CFDeactivate, "Fac_CFDeactivate" },
03274       { Fac_CFInterrogateParameters, "Fac_CFInterrogateParameters" },
03275       { Fac_CFInterrogateNumbers, "Fac_CFInterrogateNumbers" },
03276       { Fac_CD, "Fac_CD" },
03277       { Fac_AOCDCurrency, "Fac_AOCDCurrency" },
03278       { Fac_AOCDChargingUnit, "Fac_AOCDChargingUnit" },
03279 /* *INDENT-ON* */
03280    };
03281    
03282    unsigned index;
03283    
03284    for (index = 0; index < ARRAY_LEN(arr); ++index) {
03285       if (arr[index].facility == facility) {
03286          return arr[index].name;
03287       }
03288    }  /* end for */
03289 
03290    return "unknown";
03291 }  /* end fac2str() */
03292 
03293 void misdn_lib_log_ies(struct misdn_bchannel *bc)
03294 {
03295    struct misdn_stack *stack;
03296 
03297    if (!bc) return;
03298 
03299    stack = get_stack_by_bc(bc);
03300 
03301    if (!stack) return;
03302 
03303    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);
03304    
03305    cb_log(2, stack->port,
03306           " --> info_dad:%s onumplan:%c dnumplan:%c rnumplan:%c cpnnumplan:%c\n",
03307           bc->info_dad,
03308           bc->onumplan>=0?'0'+bc->onumplan:' ',
03309           bc->dnumplan>=0?'0'+bc->dnumplan:' ',
03310           bc->rnumplan>=0?'0'+bc->rnumplan:' ',
03311           bc->cpnnumplan>=0?'0'+bc->cpnnumplan:' '
03312       );
03313    
03314    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);
03315    cb_log(4, stack->port, " --> screen:%d --> pres:%d\n",
03316          bc->screen, bc->pres);
03317    
03318    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);
03319    
03320    cb_log(4, stack->port, " --> facility:%s out_facility:%s\n",fac2str(bc->fac_in.Function),fac2str(bc->fac_out.Function));
03321 
03322    cb_log(5, stack->port, " --> urate:%d rate:%d mode:%d user1:%d\n", bc->urate, bc->rate, bc->mode,bc->user1);
03323    
03324    cb_log(5, stack->port, " --> bc:%p h:%d sh:%d\n", bc, bc->holded, bc->stack_holder);
03325 }
03326 
03327 
03328 #define RETURN(a,b) {retval=a; goto b;}
03329 
03330 static void misdn_send_lock(struct misdn_bchannel *bc)
03331 {
03332    //cb_log(0,bc->port,"Locking bc->pid:%d\n", bc->pid);
03333    if (bc->send_lock)
03334       pthread_mutex_lock(&bc->send_lock->lock);
03335 }
03336 
03337 static void misdn_send_unlock(struct misdn_bchannel *bc)
03338 {
03339    //cb_log(0,bc->port,"UnLocking bc->pid:%d\n", bc->pid);
03340    if (bc->send_lock)
03341       pthread_mutex_unlock(&bc->send_lock->lock);
03342 }
03343 
03344 int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event )
03345 {
03346    msg_t *msg; 
03347    int retval=0;
03348    struct misdn_stack *stack;
03349   
03350    if (!bc) RETURN(-1,OUT_POST_UNLOCK);
03351    
03352    stack = get_stack_by_bc(bc);
03353    
03354    if (!stack) {
03355       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);
03356       RETURN(-1,OUT);
03357    }
03358    
03359    misdn_send_lock(bc);
03360 
03361 
03362    cb_log(6,stack->port,"SENDEVENT: stack->nt:%d stack->upperid:%x\n",stack->nt, stack->upper_id);
03363 
03364    if ( stack->nt && !stack->l1link) {
03365       /** Queue Event **/
03366       bc->evq=event;
03367       cb_log(1, stack->port, "Queueing Event %s because L1 is down (btw. Activating L1)\n", isdn_get_info(msgs_g, event, 0));
03368       misdn_lib_get_l1_up(stack);
03369       RETURN(0,OUT);
03370    }
03371    
03372    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);
03373    cb_log(4, stack->port, " --> bc_state:%s\n",bc_state2str(bc->bc_state));
03374    misdn_lib_log_ies(bc);
03375    
03376    switch (event) {
03377    case EVENT_SETUP:
03378       if (create_process(glob_mgr->midev, bc)<0) {
03379          cb_log(0,  stack->port, " No free channel at the moment @ send_event\n");
03380 
03381          RETURN(-ENOCHAN,OUT);
03382       }
03383       break;
03384 
03385    case EVENT_PROGRESS:
03386    case EVENT_ALERTING:
03387    case EVENT_PROCEEDING:
03388    case EVENT_SETUP_ACKNOWLEDGE:
03389    case EVENT_CONNECT:
03390       if (!stack->nt) break;
03391 
03392    case EVENT_RETRIEVE_ACKNOWLEDGE:
03393 
03394       if (stack->nt) {
03395          if (bc->channel <=0 ) { /*  else we have the channel already */
03396             if (find_free_chan_in_stack(stack, bc, 0, 0)<0) {
03397                cb_log(0, stack->port, " No free channel at the moment\n");
03398                /*FIXME: add disconnect*/
03399                RETURN(-ENOCHAN,OUT);
03400             }
03401          }
03402          /* Its that i generate channels */
03403       }
03404 
03405       retval=setup_bc(bc);
03406       if (retval == -EINVAL) {
03407          cb_log(0,bc->port,"send_event: setup_bc failed\n");
03408       }
03409 
03410       if (misdn_cap_is_speech(bc->capability)) {
03411          if ((event==EVENT_CONNECT)||(event==EVENT_RETRIEVE_ACKNOWLEDGE)) {
03412             if ( *bc->crypt_key ) {
03413                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);
03414                
03415                manager_ph_control_block(bc,  BF_ENABLE_KEY, bc->crypt_key, strlen(bc->crypt_key) );
03416             }
03417             
03418             if (!bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03419             manager_ec_enable(bc);
03420             
03421             if (bc->txgain != 0) {
03422                cb_log(4, stack->port,  "--> Changing txgain to %d\n", bc->txgain);
03423                manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03424             }
03425             
03426             if ( bc->rxgain != 0 ) {
03427                cb_log(4, stack->port,  "--> Changing rxgain to %d\n", bc->rxgain);
03428                manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03429             }
03430          }
03431       }
03432       break;
03433 
03434    case EVENT_HOLD_ACKNOWLEDGE:
03435    {
03436       struct misdn_bchannel *holded_bc=malloc(sizeof(struct misdn_bchannel));
03437       if (!holded_bc) {
03438          cb_log(0,bc->port, "Could not allocate holded_bc!!!\n");
03439          RETURN(-1,OUT);
03440       }
03441 
03442       /*backup the bc*/
03443       memcpy(holded_bc,bc,sizeof(struct misdn_bchannel));
03444       holded_bc->holded=1;
03445       bc_state_change(holded_bc,BCHAN_CLEANED);
03446 
03447       stack_holder_add(stack,holded_bc);
03448    
03449       /*kill the bridge and clean the bchannel*/
03450       if (stack->nt) {
03451          int channel;
03452          if (bc->bc_state == BCHAN_BRIDGED) {
03453             struct misdn_bchannel *bc2;
03454 
03455             misdn_split_conf(bc,bc->conf_id);
03456             bc2 = find_bc_by_confid(bc->conf_id);
03457             if (!bc2) {
03458                cb_log(0,bc->port,"We have no second bc in bridge???\n");
03459             } else {
03460                misdn_split_conf(bc2,bc->conf_id);
03461             }
03462          }
03463          
03464          channel = bc->channel;
03465 
03466          empty_bc(bc);
03467          clean_up_bc(bc);
03468 
03469          if (channel>0)
03470             empty_chan_in_stack(stack,channel);
03471 
03472          bc->in_use=0;  
03473       }
03474       
03475    }
03476    break;
03477 
03478    /* finishing the channel eh ? */
03479    case EVENT_DISCONNECT:
03480       if (!bc->need_disconnect) {
03481          cb_log(0,bc->port," --> we have already send Disconnect\n");
03482          RETURN(-1,OUT);
03483       }
03484       
03485       bc->need_disconnect=0;
03486       break;
03487    case EVENT_RELEASE:
03488       if (!bc->need_release) {
03489          cb_log(0,bc->port," --> we have already send Release\n");
03490          RETURN(-1,OUT);
03491       }
03492       bc->need_disconnect=0;
03493       bc->need_release=0;
03494       break;
03495    case EVENT_RELEASE_COMPLETE:
03496       if (!bc->need_release_complete) {
03497          cb_log(0,bc->port," --> we have already send Release_complete\n");
03498          RETURN(-1,OUT);
03499       }
03500       bc->need_disconnect=0;
03501       bc->need_release=0;
03502       bc->need_release_complete=0;
03503 
03504       if (!stack->nt) {
03505          /*create cleanup in TE*/
03506          int channel=bc->channel;
03507 
03508          int tmpcause=bc->cause; 
03509          int tmp_out_cause=bc->out_cause; 
03510          empty_bc(bc);
03511          bc->cause=tmpcause;
03512          bc->out_cause=tmp_out_cause;
03513          clean_up_bc(bc);
03514          
03515          if (channel>0)
03516             empty_chan_in_stack(stack,channel);
03517          
03518          bc->in_use=0;
03519       }
03520       break;
03521     
03522    case EVENT_CONNECT_ACKNOWLEDGE:
03523 
03524       if ( bc->nt || misdn_cap_is_speech(bc->capability)) {
03525          int retval=setup_bc(bc);
03526          if (retval == -EINVAL){
03527             cb_log(0,bc->port,"send_event: setup_bc failed\n");
03528             
03529          }
03530       }
03531       
03532       if (misdn_cap_is_speech(bc->capability)) {
03533          if (  !bc->nodsp) manager_ph_control(bc,  DTMF_TONE_START, 0);
03534          manager_ec_enable(bc);
03535 
03536          if ( bc->txgain != 0 ) {
03537             cb_log(4, stack->port, "--> Changing txgain to %d\n", bc->txgain);
03538             manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
03539          }
03540          if ( bc->rxgain != 0 ) {
03541             cb_log(4, stack->port, "--> Changing rxgain to %d\n", bc->rxgain);
03542             manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
03543          }
03544       }
03545       break;
03546     
03547    default:
03548       break;
03549    }
03550   
03551    /* Later we should think about sending bchannel data directly to misdn. */
03552    msg = isdn_msg_build_event(msgs_g, bc, event, stack->nt);
03553    msg_queue_tail(&stack->downqueue, msg);
03554    sem_post(&glob_mgr->new_msg);
03555   
03556 OUT:
03557    misdn_send_unlock(bc);
03558 
03559 OUT_POST_UNLOCK:
03560    return retval; 
03561 }
03562 
03563 
03564 static int handle_err(msg_t *msg)
03565 {
03566    iframe_t *frm = (iframe_t*) msg->data;
03567 
03568 
03569    if (!frm->addr) {
03570       static int cnt=0;
03571       if (!cnt)
03572          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x\n",frm->prim,frm->dinfo);
03573       cnt++;
03574       if (cnt>100) {
03575          cb_log(0,0,"mISDN Msg without Address pr:%x dinfo:%x (already more than 100 of them)\n",frm->prim,frm->dinfo);
03576          cnt=0;
03577       }
03578       
03579       free_msg(msg);
03580       return 1;
03581       
03582    }
03583    
03584    switch (frm->prim) {
03585       case MGR_SETSTACK|INDICATION:
03586          return handle_bchan(msg);
03587       break;
03588 
03589       case MGR_SETSTACK|CONFIRM:
03590       case MGR_CLEARSTACK|CONFIRM:
03591          free_msg(msg) ; 
03592          return 1;
03593       break;
03594 
03595       case DL_DATA|CONFIRM:
03596          cb_log(4,0,"DL_DATA|CONFIRM\n");
03597          free_msg(msg);
03598          return 1;
03599 
03600       case PH_CONTROL|CONFIRM:
03601          cb_log(4,0,"PH_CONTROL|CONFIRM\n");
03602          free_msg(msg);
03603          return 1;
03604 
03605       case DL_DATA|INDICATION:
03606       {
03607          int port=(frm->addr&MASTER_ID_MASK) >> 8;
03608          int channel=(frm->addr&CHILD_ID_MASK) >> 16;
03609          struct misdn_bchannel *bc;
03610 
03611          /*we flush the read buffer here*/
03612          
03613          cb_log(9,0,"BCHAN DATA without BC: addr:%x port:%d channel:%d\n",frm->addr, port,channel);
03614          
03615          free_msg(msg); 
03616          return 1;
03617          
03618          
03619          bc = find_bc_by_channel(port, channel);
03620 
03621          if (!bc) {
03622             struct misdn_stack *stack = find_stack_by_port(port);
03623 
03624             if (!stack) {
03625                cb_log(0,0," --> stack not found\n");
03626                free_msg(msg);
03627                return 1;
03628             }
03629             
03630             cb_log(0,0," --> bc not found by channel\n");
03631             if (stack->l2link)
03632                misdn_lib_get_l2_down(stack);
03633 
03634             if (stack->l1link)
03635                misdn_lib_get_l1_down(stack);
03636 
03637             free_msg(msg);
03638             return 1;
03639          }
03640          
03641          cb_log(3,port," --> BC in state:%s\n", bc_state2str(bc->bc_state));
03642       }
03643    }
03644 
03645    return 0;
03646 }
03647 
03648 #if 0
03649 static int queue_l2l3(msg_t *msg)
03650 {
03651    iframe_t *frm= (iframe_t*)msg->data;
03652    struct misdn_stack *stack;
03653    stack=find_stack_by_addr( frm->addr );
03654 
03655    
03656    if (!stack) {
03657       return 0;
03658    }
03659 
03660    msg_queue_tail(&stack->upqueue, msg);
03661    sem_post(&glob_mgr->new_msg);
03662    return 1;
03663 }
03664 #endif
03665 
03666 int manager_isdn_handler(iframe_t *frm ,msg_t *msg)
03667 {  
03668 
03669    if (frm->dinfo==0xffffffff && frm->prim==(PH_DATA|CONFIRM)) {
03670       cb_log(0,0,"SERIOUS BUG, dinfo == 0xffffffff, prim == PH_DATA | CONFIRM !!!!\n");
03671    }
03672 
03673    if ( ((frm->addr | ISDN_PID_BCHANNEL_BIT )>> 28 ) == 0x5) {
03674       static int unhandled_bmsg_count=1000;
03675       if (handle_bchan(msg)) {
03676          return 0 ;
03677       }
03678          
03679       if (unhandled_bmsg_count==1000) {
03680          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);     
03681          unhandled_bmsg_count=0;
03682       }
03683 
03684       unhandled_bmsg_count++;
03685       free_msg(msg);
03686       return 0;
03687    }  
03688 
03689 #ifdef RECV_FRM_SYSLOG_DEBUG
03690    syslog(LOG_NOTICE,"mISDN recv: P(%02d): ADDR:%x PRIM:%x DINFO:%x\n",stack->port, frm->addr, frm->prim, frm->dinfo);
03691 #endif
03692 
03693    if (handle_timers(msg)) 
03694       return 0 ;
03695 
03696    
03697    if (handle_mgmt(msg)) 
03698       return 0 ; 
03699    
03700    if (handle_l2(msg)) 
03701       return 0 ;
03702 
03703    /* Its important to handle l1 AFTER l2  */
03704    if (handle_l1(msg)) 
03705       return 0 ;
03706    
03707    if (handle_frm_nt(msg)) {
03708       return 0;
03709    }
03710 
03711    if (handle_frm(msg)) {
03712       return 0;
03713    }
03714 
03715    if (handle_err(msg)) {
03716       return 0 ;
03717    }
03718 
03719 // 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);      
03720    free_msg(msg);
03721    
03722 
03723    return 0;
03724 }
03725 
03726 
03727 
03728 
03729 int misdn_lib_get_port_info(int port)
03730 {
03731    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03732    iframe_t *frm;
03733    struct misdn_stack *stack=find_stack_by_port(port);
03734    if (!msg) {
03735       cb_log(0, port, "misdn_lib_get_port_info: alloc_msg failed!\n");
03736       return -1;
03737    }
03738    frm=(iframe_t*)msg->data;
03739    if (!stack ) {
03740       cb_log(0, port, "There is no Stack for this port.\n");
03741       return -1;
03742    }
03743    /* activate bchannel */
03744    frm->prim = CC_STATUS_ENQUIRY | REQUEST;
03745 
03746    frm->addr = stack->upper_id| FLG_MSG_DOWN;
03747 
03748    frm->dinfo = 0;
03749    frm->len = 0;
03750   
03751    msg_queue_tail(&glob_mgr->activatequeue, msg);
03752    sem_post(&glob_mgr->new_msg);
03753 
03754   
03755    return 0; 
03756 }
03757 
03758 
03759 int queue_cleanup_bc(struct misdn_bchannel *bc) 
03760 {
03761    msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03762    iframe_t *frm;
03763    if (!msg) {
03764       cb_log(0, bc->port, "queue_cleanup_bc: alloc_msg failed!\n");
03765       return -1;
03766    }
03767    frm=(iframe_t*)msg->data;
03768 
03769    /* activate bchannel */
03770    frm->prim = MGR_CLEARSTACK| REQUEST;
03771 
03772    frm->addr = bc->l3_id;
03773 
03774    frm->dinfo = bc->port;
03775    frm->len = 0;
03776   
03777    msg_queue_tail(&glob_mgr->activatequeue, msg);
03778    sem_post(&glob_mgr->new_msg);
03779 
03780    return 0; 
03781 
03782 }
03783 
03784 int misdn_lib_pid_restart(int pid) 
03785 {
03786    struct misdn_bchannel *bc=manager_find_bc_by_pid(pid);
03787 
03788    if (bc) {
03789       manager_clean_bc(bc);
03790    }
03791    return 0;
03792 }
03793 
03794 /*Sends Restart message for every bchannel*/
03795 int misdn_lib_send_restart(int port, int channel)
03796 {
03797    struct misdn_stack *stack=find_stack_by_port(port);
03798    struct misdn_bchannel dummybc;
03799    /*default is all channels*/
03800    cb_log(0, port, "Sending Restarts on this port.\n");
03801    
03802    misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
03803 
03804    /*default is all channels*/
03805    if (channel <0) {
03806       dummybc.channel=-1;
03807       cb_log(0, port, "Restarting and all Interfaces\n");
03808       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03809 
03810       return 0;
03811    }
03812 
03813    /*if a channel is specified we restart only this one*/
03814    if (channel >0) {
03815       int cnt;
03816       dummybc.channel=channel;
03817       cb_log(0, port, "Restarting and cleaning channel %d\n",channel);
03818       misdn_lib_send_event(&dummybc, EVENT_RESTART);
03819       /* clean up chan in stack, to be sure we don't think it's
03820        * in use anymore */
03821       for (cnt=0; cnt<=stack->b_num; cnt++) {
03822          if (stack->bc[cnt].channel == channel) {
03823             empty_bc(&stack->bc[cnt]);
03824             clean_up_bc(&stack->bc[cnt]);
03825             stack->bc[cnt].in_use=0;
03826          }
03827       }
03828    }
03829 
03830    return 0;
03831 }
03832 
03833 /*reinitializes the L2/L3*/
03834 int misdn_lib_port_restart(int port)
03835 {
03836    struct misdn_stack *stack=find_stack_by_port(port);
03837  
03838    cb_log(0, port, "Restarting this port.\n");
03839    if (stack) {
03840       cb_log(0, port, "Stack:%p\n",stack);
03841          
03842       clear_l3(stack);
03843       {
03844          msg_t *msg=alloc_msg(MAX_MSG_SIZE);
03845          iframe_t *frm;
03846 
03847          if (!msg) {
03848             cb_log(0, port, "port_restart: alloc_msg failed\n");
03849             return -1;
03850          }
03851          
03852          frm=(iframe_t*)msg->data;
03853          /* we must activate if we are deactivated */
03854          /* activate bchannel */
03855          frm->prim = DL_RELEASE | REQUEST;
03856          frm->addr = stack->upper_id | FLG_MSG_DOWN;
03857 
03858          frm->dinfo = 0;
03859          frm->len = 0;
03860          msg_queue_tail(&glob_mgr->activatequeue, msg);
03861          sem_post(&glob_mgr->new_msg);
03862       }
03863 
03864       if (stack->nt)
03865          misdn_lib_reinit_nt_stack(stack->port);
03866     
03867    }
03868 
03869    return 0;
03870 }
03871 
03872 
03873 
03874 sem_t handler_started; 
03875 
03876 /* This is a thread */
03877 static void manager_event_handler(void *arg)
03878 {
03879    sem_post(&handler_started); 
03880    while (1) {
03881       struct misdn_stack *stack;
03882       msg_t *msg;
03883     
03884       /** wait for events **/
03885       sem_wait(&glob_mgr->new_msg);
03886     
03887       for (msg=msg_dequeue(&glob_mgr->activatequeue);
03888            msg;
03889            msg=msg_dequeue(&glob_mgr->activatequeue)
03890          )
03891       {
03892    
03893          iframe_t *frm =  (iframe_t*) msg->data ;
03894 
03895          switch ( frm->prim) {
03896 
03897          case MGR_CLEARSTACK | REQUEST:
03898             /*a queued bchannel cleanup*/
03899             {
03900                struct misdn_stack *stack=find_stack_by_port(frm->dinfo);
03901                struct misdn_bchannel *bc;
03902                if (!stack) {
03903                   cb_log(0,0,"no stack found with port [%d]!! so we cannot cleanup the bc\n",frm->dinfo);
03904                   free_msg(msg);
03905                   break;
03906                }
03907                
03908                bc = find_bc_by_l3id(stack, frm->addr);
03909                if (bc) {
03910                   cb_log(1,bc->port,"CLEARSTACK queued, cleaning up\n");
03911                   clean_up_bc(bc);
03912                } else {
03913                   cb_log(0,stack->port,"bc could not be cleaned correctly !! addr [%x]\n",frm->addr);
03914                }
03915             }
03916             free_msg(msg); 
03917             break;
03918          case MGR_SETSTACK | REQUEST :
03919             /* Warning: memory leak here if we get this message */
03920             break;
03921          default:
03922             mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
03923             free_msg(msg);
03924          }
03925       }
03926 
03927       for (stack=glob_mgr->stack_list;
03928            stack;
03929            stack=stack->next ) { 
03930 
03931          while ( (msg=msg_dequeue(&stack->upqueue)) ) {
03932             /** Handle L2/3 Signalling after bchans **/ 
03933             if (!handle_frm_nt(msg)) {
03934                /* Maybe it's TE */
03935                if (!handle_frm(msg)) {
03936                   /* wow none! */
03937                   cb_log(0,stack->port,"Wow we've got a strange issue while dequeueing a Frame\n");
03938                }
03939             }
03940          }
03941 
03942          /* Here we should check if we really want to 
03943             send all the messages we've queued, lets 
03944             assume we've queued a Disconnect, but 
03945             received it already from the other side!*/
03946            
03947          while ( (msg=msg_dequeue(&stack->downqueue)) ) {
03948             if (stack->nt ) {
03949                if (stack->nst.manager_l3(&stack->nst, msg))
03950                   cb_log(0, stack->port, "Error@ Sending Message in NT-Stack.\n");
03951      
03952             } else {
03953                iframe_t *frm = (iframe_t *)msg->data;
03954                struct misdn_bchannel *bc = find_bc_by_l3id(stack, frm->dinfo);
03955                if (bc)
03956                   send_msg(glob_mgr->midev, bc, msg);
03957                else  {
03958                   if (frm->dinfo == MISDN_ID_GLOBAL) {
03959                      struct misdn_bchannel dummybc;
03960                      misdn_make_dummy(&dummybc, stack->port, MISDN_ID_GLOBAL, stack->nt, 0);
03961                      send_msg(glob_mgr->midev, &dummybc, msg);
03962                   }
03963                }
03964             }
03965          }
03966       }
03967    }
03968 }
03969 
03970 
03971 int misdn_lib_maxports_get(void)
03972 {
03973    /* BE AWARE WE HAVE NO cb_log() HERE! */
03974 
03975    int i = mISDN_open();
03976    int max=0;
03977    
03978    if (i<0)
03979       return -1;
03980 
03981    max = mISDN_get_stack_count(i);
03982    
03983    mISDN_close(i);
03984    
03985    return max;
03986 }
03987 
03988 
03989 void misdn_lib_nt_keepcalls( int kc)
03990 {
03991 #ifdef FEATURE_NET_KEEPCALLS
03992    if (kc) {
03993       struct misdn_stack *stack=get_misdn_stack();
03994       for ( ; stack; stack=stack->next) {
03995          stack->nst.feature |= FEATURE_NET_KEEPCALLS;
03996       }
03997    }
03998 #endif
03999 }
04000 
04001 void misdn_lib_nt_debug_init( int flags, char *file ) 
04002 {
04003    static int init=0;
04004    char *f;
04005    
04006    if (!flags) 
04007       f=NULL;
04008    else
04009       f=file;
04010 
04011    if (!init) {
04012       debug_init( flags , f, f, f);
04013       init=1;
04014    } else {
04015       debug_close();
04016       debug_init( flags , f, f, f);
04017    }
04018 }
04019 
04020 
04021 int misdn_lib_init(char *portlist, struct misdn_lib_iface *iface, void *user_data)
04022 {
04023    struct misdn_lib *mgr=calloc(1, sizeof(struct misdn_lib));
04024    char *tok, *tokb;
04025    char plist[1024];
04026    int midev;
04027    int port_count=0;
04028  
04029    cb_log = iface->cb_log;
04030    cb_event = iface->cb_event;
04031    cb_jb_empty = iface->cb_jb_empty;
04032    
04033    glob_mgr = mgr;
04034   
04035    msg_init();
04036 
04037    misdn_lib_nt_debug_init(0,NULL);
04038    
04039    if (!portlist || (*portlist == 0) ) return 1;
04040    
04041    init_flip_bits();
04042    
04043    {
04044       strncpy(plist,portlist, 1024);
04045       plist[1023] = 0;
04046    }
04047   
04048    memcpy(tone_425_flip,tone_425,TONE_425_SIZE);
04049    flip_buf_bits(tone_425_flip,TONE_425_SIZE);
04050 
04051    memcpy(tone_silence_flip,tone_SILENCE,TONE_SILENCE_SIZE);
04052    flip_buf_bits(tone_silence_flip,TONE_SILENCE_SIZE);
04053   
04054    midev=te_lib_init();
04055    mgr->midev=midev;
04056 
04057    port_count=mISDN_get_stack_count(midev);
04058   
04059    msg_queue_init(&mgr->activatequeue);
04060   
04061    if (sem_init(&mgr->new_msg, 1, 0)<0)
04062       sem_init(&mgr->new_msg, 0, 0);
04063  
04064    for (tok=strtok_r(plist," ,",&tokb );
04065         tok; 
04066         tok=strtok_r(NULL," ,",&tokb)) {
04067       int port = atoi(tok);
04068       struct misdn_stack *stack;
04069       static int first=1;
04070       int ptp=0;
04071     
04072       if (strstr(tok, "ptp"))
04073          ptp=1;
04074 
04075       if (port > port_count) {
04076          cb_log(0, port, "Couldn't Initialize this port since we have only %d ports\n", port_count);
04077          exit(1);
04078       }
04079       stack=stack_init(midev, port, ptp);
04080     
04081       if (!stack) {
04082          perror("stack_init");
04083          exit(1);
04084       }
04085     
04086       {
04087          int i;
04088          for(i=0;i<=stack->b_num; i++) {
04089             int r;
04090             if ((r=init_bc(stack, &stack->bc[i], stack->midev,port,i, "", 1))<0) {
04091                cb_log(0, port, "Got Err @ init_bc :%d\n",r);
04092                exit(1);
04093             }
04094          }
04095       }
04096 
04097       if (stack && first) {
04098          mgr->stack_list=stack;
04099          first=0;
04100          continue;
04101       }
04102     
04103       if (stack) {
04104          struct misdn_stack * help;
04105          for ( help=mgr->stack_list; help; help=help->next ) 
04106             if (help->next == NULL) break;
04107          help->next=stack;
04108       }
04109     
04110    }
04111   
04112    if (sem_init(&handler_started, 1, 0)<0)
04113       sem_init(&handler_started, 0, 0);
04114   
04115    cb_log(8, 0, "Starting Event Handler\n");
04116    pthread_create( &mgr->event_handler_thread, NULL,(void*)manager_event_handler, mgr);
04117   
04118    sem_wait(&handler_started) ;
04119    cb_log(8, 0, "Starting Event Catcher\n");
04120    pthread_create( &mgr->event_thread, NULL, (void*)misdn_lib_isdn_event_catcher, mgr);
04121   
04122    cb_log(8, 0, "Event Catcher started\n");
04123 
04124    global_state= MISDN_INITIALIZED; 
04125   
04126    return (mgr == NULL);
04127 }
04128 
04129 void misdn_lib_destroy(void)
04130 {
04131    struct misdn_stack *help;
04132    int i;
04133   
04134    for ( help=glob_mgr->stack_list; help; help=help->next ) {
04135       for(i=0;i<=help->b_num; i++) {
04136          char buf[1024];
04137          mISDN_write_frame(help->midev, buf, help->bc[i].addr, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
04138          help->bc[i].addr = 0;
04139       }
04140       cb_log (1, help->port, "Destroying this port.\n");
04141       stack_destroy(help);
04142    }
04143    
04144    if (global_state == MISDN_INITIALIZED) {
04145       cb_log(4, 0, "Killing Handler Thread\n");
04146       if ( pthread_cancel(glob_mgr->event_handler_thread) == 0 ) {
04147          cb_log(4, 0, "Joining Handler Thread\n");
04148          pthread_join(glob_mgr->event_handler_thread, NULL);
04149       }
04150      
04151       cb_log(4, 0, "Killing Main Thread\n");
04152       if ( pthread_cancel(glob_mgr->event_thread) == 0 ) {
04153          cb_log(4, 0, "Joining Main Thread\n");
04154          pthread_join(glob_mgr->event_thread, NULL);
04155       }
04156    }
04157   
04158    cb_log(1, 0, "Closing mISDN device\n");
04159    te_lib_destroy(glob_mgr->midev);
04160 }
04161 
04162 char *manager_isdn_get_info(enum event_e event)
04163 {
04164    return isdn_get_info(msgs_g , event, 0);
04165 }
04166 
04167 void manager_bchannel_activate(struct misdn_bchannel *bc)
04168 {
04169    char buf[128];
04170 
04171    struct misdn_stack *stack=get_stack_by_bc(bc);
04172 
04173    if (!stack) {
04174       cb_log(0, bc->port, "bchannel_activate: Stack not found !");
04175       return ;
04176    }
04177    
04178    /* we must activate if we are deactivated */
04179    clear_ibuffer(bc->astbuf);
04180    
04181    cb_log(5, stack->port, "$$$ Bchan Activated addr %x\n", bc->addr);
04182    
04183    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN,  DL_ESTABLISH | REQUEST, 0,0, NULL, TIMEOUT_1SEC);
04184 
04185    return ;
04186 }
04187 
04188 
04189 void manager_bchannel_deactivate(struct misdn_bchannel * bc)
04190 {
04191    struct misdn_stack *stack=get_stack_by_bc(bc);
04192    iframe_t dact;
04193    char buf[128]; 
04194 
04195    switch (bc->bc_state) {
04196       case BCHAN_ACTIVATED:
04197          break;
04198       case BCHAN_BRIDGED:
04199          misdn_split_conf(bc,bc->conf_id);
04200          break;
04201       default:
04202          cb_log( 4, bc->port,"bchan_deactivate: called but not activated\n");
04203          return ;
04204 
04205    }
04206    
04207    cb_log(5, stack->port, "$$$ Bchan deActivated addr %x\n", bc->addr);
04208    
04209    bc->generate_tone=0;
04210    
04211    dact.prim = DL_RELEASE | REQUEST;
04212    dact.addr = bc->addr | FLG_MSG_DOWN;
04213    dact.dinfo = 0;
04214    dact.len = 0;
04215    mISDN_write_frame(stack->midev, buf, bc->addr | FLG_MSG_DOWN, DL_RELEASE|REQUEST,0,0,NULL, TIMEOUT_1SEC);
04216 
04217    clear_ibuffer(bc->astbuf);
04218    
04219    bc_state_change(bc,BCHAN_RELEASE);
04220   
04221    return;
04222 }
04223 
04224 
04225 int misdn_lib_tx2misdn_frm(struct misdn_bchannel *bc, void *data, int len)
04226 {
04227    struct misdn_stack *stack=get_stack_by_bc(bc);
04228    char buf[4096 + mISDN_HEADER_LEN];
04229    iframe_t *frm = (iframe_t*)buf;
04230    int r;
04231 
04232    switch (bc->bc_state) {
04233       case BCHAN_ACTIVATED:
04234       case BCHAN_BRIDGED:
04235          break;
04236       default:
04237          cb_log(3, bc->port, "BC not yet activated (state:%s)\n",bc_state2str(bc->bc_state));
04238          return -1;
04239    }
04240    
04241    frm->prim = DL_DATA|REQUEST;
04242    frm->dinfo = 0;
04243    frm->addr = bc->addr | FLG_MSG_DOWN ;
04244    
04245    frm->len = len;
04246    memcpy(&buf[mISDN_HEADER_LEN], data,len);
04247       
04248    if ( misdn_cap_is_speech(bc->capability) ) 
04249       flip_buf_bits( &buf[mISDN_HEADER_LEN], len);
04250    else
04251       cb_log(6, stack->port, "Writing %d data bytes\n",len);
04252    
04253    cb_log(9, stack->port, "Writing %d bytes 2 mISDN\n",len);
04254    r=mISDN_write(stack->midev, buf, frm->len + mISDN_HEADER_LEN, TIMEOUT_INFINIT);
04255    return 0;
04256 }
04257 
04258 
04259 
04260 /*
04261  * send control information to the channel (dsp-module)
04262  */
04263 void manager_ph_control(struct misdn_bchannel *bc, int c1, int c2)
04264 {
04265    unsigned char buffer[mISDN_HEADER_LEN+2*sizeof(int)];
04266    iframe_t *ctrl = (iframe_t *)buffer; /* preload data */
04267    unsigned int *d = (unsigned int*)&ctrl->data.p;
04268    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04269    
04270    cb_log(4,bc->port,"ph_control: c1:%x c2:%x\n",c1,c2);
04271    
04272    ctrl->prim = PH_CONTROL | REQUEST;
04273    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04274    ctrl->dinfo = 0;
04275    ctrl->len = sizeof(unsigned int)*2;
04276    *d++ = c1;
04277    *d++ = c2;
04278    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04279 }
04280 
04281 /*
04282  * allow live control of channel parameters
04283  */
04284 void isdn_lib_update_rxgain (struct misdn_bchannel *bc)
04285 {
04286    manager_ph_control(bc, VOL_CHANGE_RX, bc->rxgain);
04287 }
04288 
04289 void isdn_lib_update_txgain (struct misdn_bchannel *bc)
04290 {
04291    manager_ph_control(bc, VOL_CHANGE_TX, bc->txgain);
04292 }
04293 
04294 void isdn_lib_update_ec (struct misdn_bchannel *bc)
04295 {
04296 #ifdef MISDN_1_2
04297    if (*bc->pipeline)
04298 #else
04299    if (bc->ec_enable)
04300 #endif
04301       manager_ec_enable(bc);
04302    else
04303       manager_ec_disable(bc);
04304 }
04305 
04306 void isdn_lib_stop_dtmf (struct misdn_bchannel *bc)
04307 {
04308    manager_ph_control(bc, DTMF_TONE_STOP, 0);
04309 }
04310 
04311 /*
04312  * send control information to the channel (dsp-module)
04313  */
04314 void manager_ph_control_block(struct misdn_bchannel *bc, int c1, void *c2, int c2_len)
04315 {
04316    unsigned char buffer[mISDN_HEADER_LEN+sizeof(int)+c2_len];
04317    iframe_t *ctrl = (iframe_t *)buffer;
04318    unsigned int *d = (unsigned int *)&ctrl->data.p;
04319    /*struct misdn_stack *stack=get_stack_by_bc(bc);*/
04320    
04321    ctrl->prim = PH_CONTROL | REQUEST;
04322    ctrl->addr = bc->addr | FLG_MSG_DOWN;
04323    ctrl->dinfo = 0;
04324    ctrl->len = sizeof(unsigned int) + c2_len;
04325    *d++ = c1;
04326    memcpy(d, c2, c2_len);
04327    mISDN_write(glob_mgr->midev, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
04328 }
04329 
04330 
04331 
04332 
04333 void manager_clean_bc(struct misdn_bchannel *bc )
04334 {
04335    struct misdn_stack *stack=get_stack_by_bc(bc);
04336    
04337    if (bc->channel>0)
04338       empty_chan_in_stack(stack, bc->channel);
04339    empty_bc(bc);
04340    bc->in_use=0;
04341 
04342    cb_event(EVENT_CLEANUP, bc, NULL); 
04343 }
04344 
04345 
04346 void stack_holder_add(struct misdn_stack *stack, struct misdn_bchannel *holder)
04347 {
04348    struct misdn_bchannel *help;
04349    cb_log(4,stack->port, "*HOLDER: add %x\n",holder->l3_id);
04350    
04351    holder->stack_holder=1;
04352    holder->next=NULL;
04353    
04354    if (!stack->holding) {
04355       stack->holding = holder;
04356       return;
04357    }
04358   
04359    for (help=stack->holding;
04360         help;
04361         help=help->next) {
04362       if (!help->next) {
04363          help->next=holder;
04364          break;
04365       }
04366    }
04367   
04368 }
04369 
04370 void stack_holder_remove(struct misdn_stack *stack, struct misdn_bchannel *holder)
04371 {
04372    struct misdn_bchannel *h1;
04373 
04374    if (!holder->stack_holder) return;
04375    
04376    holder->stack_holder=0;
04377    
04378    cb_log(4,stack->port, "*HOLDER: remove %x\n",holder->l3_id);
04379    if (!stack || ! stack->holding) return;
04380   
04381    if (holder == stack->holding) {
04382       stack->holding = stack->holding->next;
04383       return;
04384    }
04385    
04386    for (h1=stack->holding;
04387         h1;
04388         h1=h1->next) {
04389       if (h1->next == holder) {
04390          h1->next=h1->next->next;
04391          return ;
04392       }
04393    }
04394 }
04395 
04396 struct misdn_bchannel *stack_holder_find_bychan(struct misdn_stack *stack, int chan)
04397 {
04398    struct misdn_bchannel *help;
04399 
04400    cb_log(4,stack?stack->port:0, "*HOLDER: find_bychan %c\n", chan);
04401    
04402    if (!stack) return NULL;
04403    
04404    for (help=stack->holding;
04405         help;
04406         help=help->next) {
04407       if (help->channel == chan) {
04408          cb_log(4,stack->port, "*HOLDER: found_bychan bc\n");
04409          return help;
04410       }
04411    }
04412 
04413    cb_log(4,stack->port, "*HOLDER: find_bychan nothing\n");
04414    return NULL;
04415 
04416 }
04417 
04418 struct misdn_bchannel *stack_holder_find(struct misdn_stack *stack, unsigned long l3id)
04419 {
04420    struct misdn_bchannel *help;
04421 
04422    cb_log(4,stack?stack->port:0, "*HOLDER: find %lx\n",l3id);
04423    
04424    if (!stack) return NULL;
04425    
04426    for (help=stack->holding;
04427         help;
04428         help=help->next) {
04429       if (help->l3_id == l3id) {
04430          cb_log(4,stack->port, "*HOLDER: found bc\n");
04431          return help;
04432       }
04433    }
04434 
04435    cb_log(4,stack->port, "*HOLDER: find nothing\n");
04436    return NULL;
04437 }
04438 
04439 
04440 
04441 void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone) 
04442 {
04443    char buf[mISDN_HEADER_LEN + 128] = "";
04444    iframe_t *frm = (iframe_t*)buf;
04445 
04446    switch(tone) {
04447    case TONE_DIAL:
04448       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_DIALTONE); 
04449    break;
04450    
04451    case TONE_ALERTING:
04452       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_RINGING);  
04453    break;
04454    
04455    case TONE_HANGUP:
04456       manager_ph_control(bc, TONE_PATT_ON, TONE_GERMAN_HANGUP);   
04457    break;
04458 
04459    case TONE_NONE:
04460    default:
04461       manager_ph_control(bc, TONE_PATT_OFF, TONE_GERMAN_HANGUP);  
04462    }
04463 
04464    frm->prim=DL_DATA|REQUEST;
04465    frm->addr=bc->addr|FLG_MSG_DOWN;
04466    frm->dinfo=0;
04467    frm->len=128;
04468    
04469    mISDN_write(glob_mgr->midev, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
04470 }
04471 
04472 
04473 void manager_ec_enable(struct misdn_bchannel *bc)
04474 {
04475    struct misdn_stack *stack=get_stack_by_bc(bc);
04476    
04477    cb_log(4, stack?stack->port:0,"ec_enable\n");
04478 
04479    if (!misdn_cap_is_speech(bc->capability)) {
04480       cb_log(1, stack?stack->port:0, " --> no speech? cannot enable EC\n");
04481    } else {
04482 
04483 #ifdef MISDN_1_2
04484    if (*bc->pipeline) {
04485       cb_log(3, stack?stack->port:0,"Sending Control PIPELINE_CFG %s\n",bc->pipeline);
04486       manager_ph_control_block(bc, PIPELINE_CFG, bc->pipeline, strlen(bc->pipeline) + 1);
04487    }
04488 #else
04489    int ec_arr[2];
04490 
04491    if (bc->ec_enable) {
04492       cb_log(3, stack?stack->port:0,"Sending Control ECHOCAN_ON taps:%d\n",bc->ec_deftaps);
04493    
04494       switch (bc->ec_deftaps) {
04495       case 4:
04496       case 8:
04497       case 16:
04498       case 32:
04499       case 64:
04500       case 128:
04501       case 256:
04502       case 512:
04503       case 1024:
04504          cb_log(4, stack->port, "Taps is %d\n",bc->ec_deftaps);
04505          break;
04506       default:
04507          cb_log(0, stack->port, "Taps should be power of 2\n");
04508          bc->ec_deftaps=128;
04509       }
04510    
04511       ec_arr[0]=bc->ec_deftaps;
04512       ec_arr[1]=0;
04513       
04514       manager_ph_control_block(bc,  ECHOCAN_ON,  ec_arr, sizeof(ec_arr));
04515    }
04516 #endif
04517    }
04518 }
04519 
04520 
04521 
04522 void manager_ec_disable(struct misdn_bchannel *bc)
04523 {
04524    struct misdn_stack *stack=get_stack_by_bc(bc);
04525    
04526    cb_log(4, stack?stack->port:0," --> ec_disable\n");
04527 
04528    if (!misdn_cap_is_speech(bc->capability)) {
04529       cb_log(1, stack?stack->port:0, " --> no speech? cannot disable EC\n");
04530       return;
04531    }
04532 
04533 #ifdef MISDN_1_2
04534    manager_ph_control_block(bc, PIPELINE_CFG, "", 0);
04535 #else
04536    if ( ! bc->ec_enable) {
04537       cb_log(3, stack?stack->port:0, "Sending Control ECHOCAN_OFF\n");
04538       manager_ph_control(bc,  ECHOCAN_OFF, 0);
04539    }
04540 #endif
04541 }
04542 
04543 struct misdn_stack* get_misdn_stack() {
04544    return glob_mgr->stack_list;
04545 }
04546 
04547 
04548 
04549 void misdn_join_conf(struct misdn_bchannel *bc, int conf_id)
04550 {
04551    char data[16] = "";
04552 
04553    bc_state_change(bc,BCHAN_BRIDGED);
04554    manager_ph_control(bc, CMX_RECEIVE_OFF, 0);
04555    manager_ph_control(bc, CMX_CONF_JOIN, conf_id);
04556 
04557    cb_log(3,bc->port, "Joining bc:%x in conf:%d\n",bc->addr,conf_id);
04558 
04559    misdn_lib_tx2misdn_frm(bc, data, sizeof(data) - 1);
04560 }
04561 
04562 
04563 void misdn_split_conf(struct misdn_bchannel *bc, int conf_id)
04564 {
04565    bc_state_change(bc,BCHAN_ACTIVATED);
04566    manager_ph_control(bc, CMX_RECEIVE_ON, 0);
04567    manager_ph_control(bc, CMX_CONF_SPLIT, conf_id);
04568 
04569    cb_log(4,bc->port, "Splitting bc:%x in conf:%d\n",bc->addr,conf_id);
04570 }
04571 
04572 void misdn_lib_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2)
04573 {
04574    int conf_id = bc1->pid + 1;
04575    struct misdn_bchannel *bc_list[] = { bc1, bc2, NULL };
04576    struct misdn_bchannel **bc;
04577 
04578    cb_log(4, bc1->port, "I Send: BRIDGE from:%d to:%d\n",bc1->port,bc2->port);
04579 
04580    for (bc=bc_list; *bc;  bc++) { 
04581       (*bc)->conf_id=conf_id;
04582       cb_log(4, (*bc)->port, " --> bc_addr:%x\n",(*bc)->addr);
04583    
04584       switch((*bc)->bc_state) {
04585          case BCHAN_ACTIVATED:
04586             misdn_join_conf(*bc,conf_id);
04587             break;
04588          default:
04589             bc_next_state_change(*bc,BCHAN_BRIDGED);
04590             break;
04591       }
04592    }
04593 }
04594 
04595 void misdn_lib_split_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2)
04596 {
04597 
04598    struct misdn_bchannel *bc_list[]={
04599       bc1,bc2,NULL
04600    };
04601    struct misdn_bchannel **bc;
04602       
04603    for (bc=bc_list; *bc;  bc++) { 
04604       if ( (*bc)->bc_state == BCHAN_BRIDGED){
04605          misdn_split_conf( *bc, (*bc)->conf_id);
04606       } else {
04607          cb_log( 2, (*bc)->port, "BC not bridged (state:%s) so not splitting it\n",bc_state2str((*bc)->bc_state));
04608       }
04609    }
04610    
04611 }
04612 
04613 
04614 
04615 void misdn_lib_echo(struct misdn_bchannel *bc, int onoff)
04616 {
04617    cb_log(3,bc->port, " --> ECHO %s\n", onoff?"ON":"OFF");
04618    manager_ph_control(bc, onoff?CMX_ECHO_ON:CMX_ECHO_OFF, 0);
04619 }
04620 
04621 
04622 
04623 void misdn_lib_reinit_nt_stack(int port)
04624 {
04625    struct misdn_stack *stack=find_stack_by_port(port);
04626    
04627    if (stack) {
04628       stack->l2link=0;
04629       stack->blocked=0;
04630    
04631       cleanup_Isdnl3(&stack->nst);
04632       cleanup_Isdnl2(&stack->nst);
04633 
04634 
04635       memset(&stack->nst, 0, sizeof(net_stack_t));
04636       memset(&stack->mgr, 0, sizeof(manager_t));
04637    
04638       stack->mgr.nst = &stack->nst;
04639       stack->nst.manager = &stack->mgr;
04640     
04641       stack->nst.l3_manager = handle_event_nt;
04642       stack->nst.device = glob_mgr->midev;
04643       stack->nst.cardnr = port;
04644       stack->nst.d_stid = stack->d_stid;
04645    
04646       stack->nst.feature = FEATURE_NET_HOLD;
04647       if (stack->ptp)
04648          stack->nst.feature |= FEATURE_NET_PTP;
04649       if (stack->pri)
04650          stack->nst.feature |= FEATURE_NET_CRLEN2 | FEATURE_NET_EXTCID;
04651       
04652       stack->nst.l1_id = stack->lower_id;
04653       stack->nst.l2_id = stack->upper_id;
04654       
04655       msg_queue_init(&stack->nst.down_queue);
04656    
04657       Isdnl2Init(&stack->nst);
04658       Isdnl3Init(&stack->nst);
04659 
04660       if (!stack->ptp)
04661          misdn_lib_get_l1_up(stack);
04662       misdn_lib_get_l2_up(stack);
04663    }
04664 }
04665 
04666 

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