src/ivac.c

   1 /* ivac.c -- main ivac file
   2  *
   3  * author: hackbard@hackdaworld.dyndns.org
   4  *         frank.zirkelbach@physik.uni-augsburg.de
   5  *
   6  * Copyright (C) 2004 Frank Zirkelbach
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include "ivac.h"
  25
  26 int usage(void) {
  27
  28   puts("");
  29   puts("usage: ivac <options>");
  30   puts("");
  31   puts("options:");
  32   puts("-h \t\t show this help");
  33   puts("-n <name> \t specify your name");
  34   puts("-p <port> \t specify port to listen for incoming connections");
  35   puts("-u <port> \t specify udp data port");
  36   puts("-d <device> \t specify audio device");
  37   puts("-i <iface> \t specify network interface");
  38   puts("");
  39
  40   return SUCCESS;
  41 }
  42
  43 int main(int argc,char **argv) {
  44
  45   /* TESTING BY NOW */
  46
  47   t_ivac ivac;
  48   int i;
  49
  50   /* default values */
  51   strcpy(ivac.username,"ivac");
  52   ivac.net.l_port=IVAC_LISTEN_PORT;
  53   ivac.net.l_udp_port=IVAC_UDP_PORT;
  54   strcpy(ivac.audio.dsp_dev,SOUND_DEVICE);
  55   strcpy(ivac.net.nic,"eth0");
  56
  57   /* parse argv and change default values */
  58   for(i=1;i<argc;i++) {
  59     if(argv[i][0]=='-') {
  60       switch(argv[i][1]) {
  61         case 'h':
  62           usage();
  63           return SUCCESS;
  64         case 'n':
  65           strncpy(ivac.username,argv[++i],CHAR_USERNAME);
  66           break;
  67         case 'p':
  68           ivac.net.l_port=atoi(argv[++i]);
  69           break;
  70         case 'u':
  71           ivac.net.l_udp_port=atoi(argv[++i]);
  72           break;
  73         case 'd':
  74           strncpy(ivac.audio.dsp_dev,argv[++i],MAX_CHAR_DEVICE);
  75           break;
  76         case 'i':
  77           strncpy(ivac.net.nic,argv[++i],MAX_NIC_DEVICE);
  78         default:
  79           usage();
  80           return ERROR;
  81       }
  82     }
  83     else usage();
  84   }
  85
  86   /* clear challenger struct */
  87   for(i=0;i<MAX_CONNECTIONS;i++)
  88     memset(&(ivac.challenger[i]),0,sizeof(t_challenger));
  89   /* zero console buffer */
  90   for(i=0;i<IVAC_CONSOLE_LEN;i++)
  91     memset(ivac.console[i],0,IVAC_CONSOLE_STRING_LEN);
  92
  93   /* set capabilities (futur: set by check routines) */
  94   ivac.g_cap=NETWORK;
  95   ivac.av_cap=AUDIO|VIDEO|DUPLEX;
  96
  97   /* set event timeout */
  98   ivac.event.timeout.tv_sec=IVAC_S_SEC;
  99   ivac.event.timeout.tv_usec=IVAC_S_USEC;
 100   /* event init */
 101   if(event_init(&(ivac.event))==E_ERROR) {
 102     ivac_shutdown(&ivac);
 103     return ERROR;
 104   }
 105
 106   /* input init */
 107   ivac.input.mode=CONTENT_BUFFER;
 108   ivac.input.c_count=0;
 109   if(input_init(&(ivac.input))==I_ERROR) {
 110     ivac_shutdown(&ivac);
 111     return ERROR;
 112   }
 113
 114   /* network init */
 115   if(network_init(&(ivac.net))==N_ERROR) {
 116     printf("[ivac] use 'fuser -n tcp %d' to determine the process to kill!\n",
 117            ivac.net.l_port);
 118     ivac_shutdown(&ivac);
 119     return ERROR;
 120   }
 121
 122   /* network udp init */
 123   network_udp_listen_init(&(ivac.net));
 124
 125   /* add listening port(s) + stdin to (read) event system */
 126   event_math(ivac.net.l_fd,&(ivac.event),READ,ADD);
 127   event_math(ivac.net.l_udp_fd,&(ivac.event),READ,ADD);
 128   event_math(0,&(ivac.event),READ,ADD);
 129
 130   /* use hardcoded audio settings by now */
 131   ivac.audio.fmt=BIT_8;
 132   ivac.audio.channels=MONO;
 133   ivac.audio.speed=8000;
 134   /* audio init */
 135   audio_init(&(ivac.audio));
 136   /* audio setup */
 137   audio_setup(&(ivac.audio));
 138
 139   /* display init */
 140   display_init(&(ivac.display));
 141
 142   /* display */
 143   ivac_display(&ivac);
 144   ivac_display_content(&ivac);
 145   ivac_display_draw(&ivac);
 146
 147   /* start event system - callbacks used: ivac_event_cb + ivac_regular_cb */
 148   event_start(&(ivac.event),(void *)&ivac,ivac_event_cb,ivac_regular_cb);
 149
 150   return SUCCESS;
 151 }
 152
 153 int ivac_shutdown(t_ivac *ivac) {
 154
 155   display_shutdown(&(ivac->display));
 156   network_shutdown(&(ivac->net));
 157   network_udp_shutdown(&(ivac->net));
 158   input_shutdown(&(ivac->input));
 159   event_stop(&(ivac->event));
 160   audio_shutdown(&(ivac->audio));
 161
 162   return SUCCESS;
 163 }
 164
 165 int ivac_send_info(int channel,t_ivac *ivac) {
 166
 167   char data[SEND_N_MAX];
 168   int size;
 169
 170   size=strlen(ivac->username);
 171
 172   data[0]=IVAC_SEND_NAME;
 173   data[1]=size;
 174   strncpy(data+2,ivac->username,size);
 175   size+=2;
 176
 177   data[size]=IVAC_SEND_G_CAP;
 178   data[size+1]=1;
 179   data[size+2]=ivac->g_cap;
 180   size+=3;
 181
 182   data[size]=IVAC_SEND_AV_CAP;
 183   data[size+1]=2;
 184   data[size+2]=(ivac->av_cap)>>8;
 185   data[size+3]=(ivac->av_cap)&0xff;
 186   size+=4;
 187
 188   if(network_send(ivac->net.connection[channel].fd,data,size)==N_ERROR) {
 189     puts("[ivac] ivac_send_info failed");
 190     return ERROR;
 191   }
 192
 193   return SUCCESS;
 194 }
 195
 196 int ivac_send_quit(int channel,t_ivac *ivac) {
 197
 198   char data[7]; /* one more for \0 */
 199
 200   data[0]=IVAC_SEND_QUIT;
 201   data[1]=4;
 202   strcpy(data+2,"quit");
 203
 204   if(network_send(ivac->net.connection[channel].fd,data,6)==N_ERROR) {
 205     puts("[ivac] ivac_send_quit failed");
 206     return ERROR;
 207   }
 208
 209   return SUCCESS;
 210 }
 211
 212 int ivac_receive_info(int channel,t_ivac *ivac) {
 213
 214   char data[SEND_N_MAX];
 215   char c_str[IVAC_CONSOLE_STRING_LEN];
 216   int count,length;
 217
 218   count=0;
 219
 220   if((length=network_receive(ivac->net.connection[channel].fd,
 221                              data,SEND_N_MAX))==N_ERROR) {
 222     puts("[ivac] ivac_receive_info failed");
 223     return ERROR;
 224   }
 225
 226   while(length-count) {
 227     switch(data[count]) {
 228       case IVAC_SEND_NAME:
 229         strncpy(ivac->challenger[channel].name,data+count+2,data[count+1]);
 230         ivac->challenger[channel].name[(int)data[count+1]]='\0';
 231         count+=(data[count+1]+2);
 232         break;
 233       case IVAC_SEND_G_CAP:
 234         ivac->challenger[channel].g_cap=data[count+2];
 235         count+=3;
 236         break;
 237       case IVAC_SEND_AV_CAP:
 238         ivac->challenger[channel].av_cap=data[count+2]<<8;
 239         ivac->challenger[channel].av_cap|=data[count+3];
 240         count+=4;
 241         break;
 242       case IVAC_SEND_QUIT:
 243         if(!(strncmp(data+count+2,"quit",data[1])))
 244           sprintf(c_str,"channel %02d: connection closed by remote host",
 245                   channel);
 246           event_math(ivac->net.connection[channel].fd,&(ivac->event),
 247                      READ,REMOVE);
 248           network_close(&(ivac->net),channel);
 249           memset(&(ivac->challenger[channel]),0,sizeof(t_challenger));
 250           ivac_add_to_monitor(ivac,c_str);
 251           count+=6;
 252           break;
 253       default:
 254         sprintf(c_str,"ivac_receive_info, unknown character: 0x%02x\n",
 255                data[count]);
 256         ivac_add_to_monitor(ivac,c_str);
 257         return ERROR;
 258         break;
 259     }
 260   }
 261
 262   return length;
 263 }
 264
 265 int ivac_event_cb(t_event *event,void *ptr) {
 266
 267   t_ivac *ivac;
 268   int channel;
 269   char c_str[IVAC_CONSOLE_STRING_LEN];
 270
 271   ivac=(t_ivac *)ptr;
 272
 273   /* incoming connection -- first contact => send info */
 274   if(FD_ISSET(ivac->net.l_fd,&(event->rfds))) {
 275     channel=network_manage_incoming(&(ivac->net));
 276     if(channel==N_E_ACCEPT)
 277       sprintf(c_str,"accept failed");
 278     else if(channel==N_E_MAXC)
 279       sprintf(c_str,"maximum connections reached");
 280     else {
 281       sprintf(c_str,"connection from %s port %d on channel %d",
 282               ivac->net.connection[channel].ip,
 283               ivac->net.connection[channel].port,channel);
 284       ivac_add_to_monitor(ivac,c_str);
 285       event_math(ivac->net.connection[channel].fd,event,READ,ADD);
 286       ivac_send_info(channel,ivac);
 287     }
 288     ivac_display_content(ivac);
 289     ivac_display_draw(ivac);
 290   }
 291
 292   /* wait for user info */
 293   for(channel=0;channel<MAX_CONNECTIONS;channel++) {
 294     if(ivac->net.connection[channel].status&C_ESTABL) {
 295       /* remote is sending info */
 296       if(FD_ISSET(ivac->net.connection[channel].fd,&(event->rfds))) {
 297         if(ivac_receive_info(channel,ivac)==0) {
 298           event_math(ivac->net.connection[channel].fd,event,READ,REMOVE);
 299           network_close(&(ivac->net),channel);
 300           sprintf(c_str,"channel %02d: broken pipe - disconnected",channel);
 301           ivac_add_to_monitor(ivac,c_str);
 302         }
 303         ivac_display_content(ivac);
 304         ivac_display_draw(ivac);
 305       }
 306     }
 307   }
 308
 309   /* user interaction */
 310   if(FD_ISSET(0,&(event->rfds)))
 311     input_get_event(&(ivac->input),ivac_parse_command,ivac);
 312
 313   return SUCCESS;
 314 }
 315
 316 int ivac_regular_cb(t_event *event,void *ptr) {
 317
 318   t_ivac *ivac;
 319
 320   ivac=(t_ivac *)ptr;
 321
 322   ivac_add_to_monitor(ivac,"event HUGH");
 323
 324   /* usual jobs like audio & video transmit ... */
 325
 326   return SUCCESS;
 327 }
 328
 329 int ivac_parse_command(t_input *input,void *ptr) {
 330
 331   t_ivac *ivac;
 332   int i,j,k;
 333   int len;
 334   int channel;
 335   char *data,valid;
 336   char c_str[IVAC_CONSOLE_STRING_LEN];
 337   char arg[IVAC_ARG_COUNT][IVAC_ARG_LEN];
 338   char debug_string[128];
 339
 340   ivac=(t_ivac *)ptr;
 341   data=input->content;
 342   valid=0;
 343
 344   /* refresh prompt content only */
 345   ivac_display_prompt_content(ivac);
 346   ivac_display_draw(ivac);
 347
 348 #ifdef DEBUG
 349   ivac_add_to_monitor(ivac,"nach display refresh");
 350 #endif
 351
 352   /* parse command routines */
 353   if(data[input->c_count-1]=='\n'||data[input->c_count-1]=='\r') {
 354
 355 #ifdef DEBUG
 356     ivac_add_to_monitor(ivac,"got newline or carriage return!");
 357 #endif
 358
 359     /* delete console string + args */
 360     memset(c_str,0,IVAC_CONSOLE_STRING_LEN);
 361     for(j=0;j<IVAC_ARG_COUNT;j++) memset(arg[j],0,IVAC_ARG_LEN);
 362
 363     /* get args */
 364     len=0;
 365     while(data[len]!='\n'||data[len]!='\r') len++;
 366     i=0; j=0;
 367     while((i<len) && (j<IVAC_ARG_COUNT)) {
 368       k=0;
 369       while((data[i+k]!=' ')&&(data[i+k]!='\n'||data[i+k]!='\r')) {
 370         arg[j][k]=data[i+k];
 371         k++;
 372       }
 373       arg[j][k]='\0';
 374       j++;
 375       /* skip all ' ' */
 376       while(data[i+k]==' ') k++;
 377       i+=k;
 378     }
 379
 380
 381     /* parse command  aka arg[0] */
 382     if(!(strncmp(arg[0],"quit",4))) {
 383       valid=1;
 384       sprintf(c_str,"ivac shutdown ...");
 385       for(i=0;i<MAX_CONNECTIONS;i++) {
 386         if(ivac->net.connection[i].status&C_ESTABL) {
 387           ivac_send_quit(i,ivac);
 388           network_close(&(ivac->net),i);
 389         }
 390       }
 391       ivac_shutdown(ivac);
 392     }
 393     if(!(strncmp(arg[0],"set",3))) {
 394       valid=1;
 395       if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
 396       else channel=-1;
 397       if(!(strncmp(arg[1],"name",4))) {
 398         strncpy(ivac->username,arg[2],CHAR_USERNAME);
 399         sprintf(c_str,"changed username to %s",ivac->username);
 400       }
 401       else if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
 402         i=network_set_connection_info(&(ivac->net),channel,arg[2],atoi(arg[3]));
 403         if(i==N_E_IN_USE)
 404           sprintf(c_str,"channel %02d: connection in use",channel);
 405         if(i==N_SUCCESS)
 406           sprintf(c_str,"channel %02d: set connection info",channel);
 407       } else snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown argument: '%s'",
 408                       arg[1]);
 409     }
 410     if(!(strncmp(arg[0],"connect",7))) {
 411       valid=1;
 412       if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
 413       else channel=-1;
 414       if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
 415         i=network_connect(&(ivac->net),channel);
 416         if(i==N_E_IN_USE)
 417           sprintf(c_str,"channel %02d: connection in use",channel);
 418         else if(i==N_E_NO_INFO)
 419           sprintf(c_str,"channel %02d: channel not configured",channel);
 420         else {
 421           sprintf(c_str,"channel %02d: connected to %s:%d",channel,
 422                   ivac->net.connection[channel].ip,
 423                   ivac->net.connection[channel].port);
 424           event_math(ivac->net.connection[channel].fd,&(ivac->event),READ,ADD);
 425           ivac_send_info(channel,ivac);
 426         }
 427       }
 428       else sprintf(c_str,"invalid argument: '%s'",arg[1]);
 429     }
 430     if(!(strncmp(arg[0],"close",5))) {
 431       valid=1;
 432       if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
 433       else channel=-1;
 434       if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
 435         if(ivac->net.connection[channel].status&C_ESTABL) {
 436           ivac_send_quit(channel,ivac);
 437           event_math(ivac->net.connection[channel].fd,&(ivac->event),
 438                      READ,REMOVE);
 439           network_close(&(ivac->net),channel);
 440           sprintf(c_str,"channel %02d: connection closed",channel);
 441           memset(&(ivac->challenger[channel]),0,sizeof(t_challenger));
 442         }
 443         else
 444           sprintf(c_str,"channel %02d: no active connection",channel);
 445       }
 446       else sprintf(c_str,"invalid argument: '%s'",arg[1]);
 447     }
 448     if(!(strncmp(arg[0],"select",6))) {
 449       valid=1;
 450       if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
 451       else channel=-1;
 452       if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
 453         network_select(&(ivac->net),channel);
 454         sprintf(c_str,"selected channel %d",channel);
 455       }
 456       else if(arg[1][0]=='*') {
 457         network_select(&(ivac->net),MAX_CONNECTIONS);
 458         strcpy(c_str,"selected all channels");
 459       }
 460       else sprintf(c_str,"invalid argument: '%s'",arg[1]);
 461     }
 462     if(!(strncmp(arg[0],"deselect",8))) {
 463       valid=1;
 464       if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
 465       else channel=-1;
 466       if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
 467         network_deselect(&(ivac->net),channel);
 468         sprintf(c_str,"deselected channel %d",channel);
 469       }
 470       else if(arg[1][0]=='*') {
 471         network_deselect(&(ivac->net),MAX_CONNECTIONS);
 472         strcpy(c_str,"deselected all channels");
 473       }
 474       else sprintf(c_str,"invalid argument: '%s'",arg[1]);
 475     }
 476
 477     if(!valid)
 478       snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown command: '%s'",arg[0]);
 479
 480     /* call network functions */
 481     network_manage_connection(&(ivac->net));
 482
 483     /* add console string to console buffer */
 484     ivac_add_to_monitor(ivac,c_str);
 485
 486     /* refresh whole display content */
 487     ivac_display_content(ivac);
 488     ivac_display_draw(ivac);
 489
 490     /* delete input content buffer + reset counter */
 491     memset(input->content,0,input->c_count-1);
 492     input->c_count=0;
 493
 494   }
 495
 496   ivac_add_to_monitor(ivac,"debug: end of parse function");
 497
 498   return SUCCESS;
 499 }
 500
 501 int ivac_display_head(t_ivac *ivac) {
 502
 503   display_line(&(ivac->display),0,0,ivac->display.max_x,0,'#');
 504   display_string(&(ivac->display),(ivac->display.max_x-strlen(PROG_NAME))/2,1,
 505                  PROG_NAME,strlen(PROG_NAME));
 506   display_line(&(ivac->display),0,2,ivac->display.max_x,2,'#');
 507
 508   return SUCCESS;
 509 }
 510
 511 int ivac_display_box(t_ivac *ivac) {
 512
 513   display_line(&(ivac->display),0,3,ivac->display.max_x,3,'-');
 514   display_line(&(ivac->display),0,5,ivac->display.max_x,5,'-');
 515   display_string(&(ivac->display),0,6,"connections:",12);
 516   display_line(&(ivac->display),
 517                0,ivac->display.max_y-IVAC_PROMPT_LEN-IVAC_CONSOLE_LEN-1,
 518                ivac->display.max_x,
 519                ivac->display.max_y-IVAC_PROMPT_LEN-IVAC_CONSOLE_LEN-1,'-');
 520
 521   return SUCCESS;
 522 }
 523
 524 int ivac_display_box_content(t_ivac *ivac) {
 525
 526   int channel;
 527   char string[MAX_BOX_CHARS];
 528
 529   /* prepare challenger names */
 530   for(channel=0;channel<MAX_CONNECTIONS;channel++)
 531     if(ivac->challenger[channel].name[0]==0)
 532       strcpy(ivac->challenger[channel].name,"<empty>");
 533
 534   sprintf(string,"username: %s, capabilities: %02x|%04x",
 535           ivac->username,ivac->g_cap,ivac->av_cap);
 536   display_string(&(ivac->display),0,4,string,strlen(string));
 537
 538   for(channel=0;channel<MAX_CONNECTIONS;channel++) {
 539     if(ivac->net.connection[channel].status&C_INFO_A) {
 540       snprintf(string,MAX_BOX_CHARS,
 541                "channel %02d: %s:%d, status: %02x, name: %s\n",channel,
 542                ivac->net.connection[channel].ip,
 543                ivac->net.connection[channel].port,
 544                ivac->net.connection[channel].status,
 545                ivac->challenger[channel].name);
 546       display_string(&(ivac->display),0,IVAC_HEAD_LEN+4+channel,
 547                      string,strlen(string));
 548     }
 549   }
 550
 551   return SUCCESS;
 552 }
 553
 554 int ivac_display_console(t_ivac *ivac) {
 555
 556   display_string(&(ivac->display),
 557                  0,ivac->display.max_y-IVAC_PROMPT_LEN-IVAC_CONSOLE_LEN,
 558                  "console messages:",17);
 559
 560   return SUCCESS;
 561 }
 562
 563 int ivac_display_console_content(t_ivac *ivac) {
 564
 565   int i;
 566   char string[IVAC_CONSOLE_STRING_LEN];
 567
 568   for(i=0;i<IVAC_CONSOLE_LEN;i++) {
 569     snprintf(string,IVAC_CONSOLE_STRING_LEN,"%s\n",ivac->console[i]);
 570     display_string(&(ivac->display),
 571                    0,ivac->display.max_y-IVAC_PROMPT_LEN-IVAC_CONSOLE_LEN+1+i,
 572                    string,strlen(string));
 573   }
 574
 575   return SUCCESS;
 576 }
 577
 578 int ivac_display_prompt(t_ivac *ivac) {
 579
 580   display_string(&(ivac->display),0,ivac->display.max_y-1,"prompt: ",8);
 581
 582   return SUCCESS;
 583 }
 584
 585 int ivac_display_prompt_content(t_ivac *ivac) {
 586
 587   char string[IVAC_CONSOLE_STRING_LEN];
 588   int count;
 589
 590   for(count=0;count<ivac->input.c_count;count++)
 591     string[count]=ivac->input.content[count];
 592   for(;count<ivac->display.max_x-8;count++) string[count]=' ';
 593   display_string(&(ivac->display),8,ivac->display.max_y-1,
 594                  string,ivac->display.max_x);
 595
 596   return SUCCESS;
 597 }
 598
 599 int ivac_display_content(t_ivac *ivac) {
 600
 601   /* display box content */
 602   ivac_display_box_content(ivac);
 603
 604   /* display console content */
 605   ivac_display_console_content(ivac);
 606
 607   /* display prompt content */
 608   ivac_display_prompt_content(ivac);
 609
 610   return SUCCESS;
 611 }
 612
 613 int ivac_display(t_ivac *ivac) {
 614
 615   /* display static head */
 616   ivac_display_head(ivac);
 617
 618   /* display static box */
 619   ivac_display_box(ivac);
 620
 621   /* display static console */
 622   ivac_display_console(ivac);
 623
 624   /* display command prompt */
 625   ivac_display_prompt(ivac);
 626
 627   return SUCCESS;
 628 }
 629
 630 int ivac_display_draw(t_ivac *ivac) {
 631
 632   display_draw(&(ivac->display));
 633   display_set_cursor(&(ivac->display),ivac->input.c_count+8,
 634                      ivac->display.max_y-1);
 635
 636   return SUCCESS;
 637 }
 638
 639 int ivac_add_to_monitor(t_ivac *ivac,char *msg) {
 640
 641   int i;
 642
 643   for(i=0;i<IVAC_CONSOLE_LEN-1;i++)
 644     memcpy(ivac->console[i],ivac->console[i+1],IVAC_CONSOLE_STRING_LEN);
 645   memcpy(ivac->console[IVAC_CONSOLE_LEN-1],msg,IVAC_CONSOLE_STRING_LEN);
 646
 647   ivac_display_console_content(ivac);
 648   ivac_display_draw(ivac);
 649
 650   return SUCCESS;
 651 }