1 /* ivac.c -- main ivac file
3 * author: hackbard@hackdaworld.dyndns.org
4 * frank.zirkelbach@physik.uni-augsburg.de
6 * Copyright (C) 2004 Frank Zirkelbach
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.
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.
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
24 // #define USE_NCURSES
28 int main(int argc,char **argv) {
36 printf("\nusage: %s <username>\n\n",argv[0]);
41 strncpy(ivac.username,argv[1],CHAR_USERNAME);
42 /* clear challenger struct */
43 for(i=0;i<MAX_CONNECTIONS;i++)
44 memset(&(ivac.challenger[i]),0,sizeof(t_challenger));
45 /* zero console buffer */
46 for(i=0;i<IVAC_CONSOLE_LEN;i++)
47 memset(ivac.console[i],0,IVAC_CONSOLE_STRING_LEN);
49 /* set capabilities (futur: set by check routines) */
51 ivac.av_cap=AUDIO|VIDEO|DUPLEX;
53 /* set event timeout */
54 ivac.event.timeout.tv_sec=IVAC_S_SEC;
55 ivac.event.timeout.tv_usec=IVAC_S_USEC;
57 event_init(&(ivac.event));
60 ivac.input.mode=CONTENT_BUFFER;
61 input_init(&(ivac.input));
63 /* set listen port (futur: read from config or entered later) */
64 network_set_listen_port(&(ivac.net),IVAC_LISTEN_PORT);
66 if(network_init(&(ivac.net))==N_ERROR) {
67 printf("[ivac] use 'fuser -n tcp %d' to determine the process to kill!\n",
73 /* add listening port + stdin to (read) event system */
74 event_math(ivac.net.l_fd,&(ivac.event),READ,ADD);
75 event_math(0,&(ivac.event),READ,ADD);
78 // display_init(&(ivac.display));
81 ivac_display(&(ivac.display));
83 /* start event system - callbacks used: ivac_event_cb + ivac_regular_cb */
84 event_start(&(ivac.event),(void *)&ivac,ivac_event_cb,ivac_regular_cb);
86 // ivac_shutdown(&ivac);
91 int ivac_shutdown(t_ivac *ivac) {
93 network_shutdown(&(ivac->net));
94 input_shutdown(&(ivac->input));
95 event_stop(&(ivac->event));
96 // display_shutdown(&(ivac->display));
101 int ivac_send_info(int channel,t_ivac *ivac) {
103 char data[SEND_N_MAX];
106 size=strlen(ivac->username);
108 data[0]=IVAC_SEND_NAME;
110 strncpy(data+2,ivac->username,size);
113 data[size]=IVAC_SEND_G_CAP;
115 data[size+2]=ivac->g_cap;
118 data[size]=IVAC_SEND_AV_CAP;
120 data[size+2]=(ivac->av_cap)>>8;
121 data[size+3]=(ivac->av_cap)&0xff;
124 if(network_send(ivac->net.connection[channel].fd,data,size)==N_ERROR) {
125 puts("[ivac] ivac_send_info failed");
132 int ivac_send_quit(int channel,t_ivac *ivac) {
136 data[0]=IVAC_SEND_QUIT;
138 strcpy(data+2,"quit");
140 if(network_send(ivac->net.connection[channel].fd,data,6)==N_ERROR) {
141 puts("[ivac] ivac_send_quit failed");
148 int ivac_receive_info(int channel,t_ivac *ivac) {
150 char data[SEND_N_MAX];
155 if((length=network_receive(ivac->net.connection[channel].fd,
156 data,SEND_N_MAX))==N_ERROR) {
157 puts("[ivac] ivac_receive_info failed");
161 while(length-count) {
162 switch(data[count]) {
164 strncpy(ivac->challenger[channel].name,data+count+2,data[count+1]);
165 ivac->challenger[channel].name[data[count+1]]='\0';
166 count+=(data[count+1]+2);
168 case IVAC_SEND_G_CAP:
169 ivac->challenger[channel].g_cap=data[count+2];
172 case IVAC_SEND_AV_CAP:
173 ivac->challenger[channel].av_cap=data[count+2]<<8;
174 ivac->challenger[channel].av_cap|=data[count+3];
178 if(!(strncmp(data+count+2,"quit",data[1])))
179 event_math(ivac->net.connection[channel].fd,&(ivac->event),
181 network_close(&(ivac->net),channel);
182 memset(&(ivac->challenger[channel]),0,sizeof(t_challenger));
184 puts("[ivac] ivac_receive_info, unknown character");
193 int ivac_event_cb(t_event *event,void *ptr) {
197 char c_str[IVAC_CONSOLE_STRING_LEN];
201 /* incoming connection -- first contact => send info */
202 if(FD_ISSET(ivac->net.l_fd,&(event->rfds))) {
203 channel=network_manage_incoming(&(ivac->net));
204 if(channel==N_E_ACCEPT)
205 sprintf(c_str,"accept failed");
206 else if(channel==N_E_MAXC)
207 sprintf(c_str,"maximum connections reached");
209 sprintf(c_str,"connection from %s port %d on channel %d",
210 ivac->net.connection[channel].ip,
211 ivac->net.connection[channel].port,channel);
212 ivac_add_to_monitor(ivac,c_str);
213 event_math(ivac->net.connection[channel].fd,event,READ,ADD);
214 ivac_send_info(channel,ivac);
216 ivac_display_content(ivac);
219 /* wait for user info */
220 for(channel=0;channel<MAX_CONNECTIONS;channel++) {
221 if(ivac->net.connection[channel].status&C_ESTABL) {
222 /* remote is sending info */
223 if(FD_ISSET(ivac->net.connection[channel].fd,&(event->rfds)))
224 ivac_receive_info(channel,ivac);
225 // ivac_display_content(ivac);
229 /* user interaction */
230 if(FD_ISSET(0,&(event->rfds)))
231 input_get_event(&(ivac->input),ivac_parse_command,ivac);
236 int ivac_regular_cb(t_event *event,void *ptr) {
238 /* usual jobs like audio & video transmit ... */
243 int ivac_parse_command(t_input *input,void *ptr) {
250 char c_str[IVAC_CONSOLE_STRING_LEN];
251 char arg[IVAC_ARG_COUNT][IVAC_ARG_LEN];
257 /* refresh prompt content only! */
258 ivac_display_prompt_content(ivac);
260 /* parse command routines */
261 if(data[input->c_count-1]=='\n') {
263 /* delete console string + args */
264 memset(c_str,0,IVAC_CONSOLE_STRING_LEN);
265 for(j=0;j<IVAC_ARG_COUNT;j++) memset(arg[j],0,IVAC_ARG_LEN);
269 while(data[len]!='\n') len++;
271 while((i<len) && (j<IVAC_ARG_COUNT)) {
273 while((data[i+k]!=' ')&&(data[i+k]!='\n')) {
280 while(data[i+k]==' ') k++;
284 /* parse command aka arg[0] */
285 if(!(strncmp(arg[0],"quit",4))) {
287 sprintf(c_str,"ivac shutdown ...");
290 if(!(strncmp(arg[0],"set",3))) {
292 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
294 if(!(strncmp(arg[1],"name",4))) {
295 strncpy(ivac->username,arg[2],CHAR_USERNAME);
296 sprintf(c_str,"changed username to %s",ivac->username);
298 else if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
299 i=network_set_connection_info(&(ivac->net),channel,arg[2],atoi(arg[3]));
301 sprintf(c_str,"channel %02d: connection in use",channel);
303 sprintf(c_str,"channel %02d: set connection info",channel);
304 } else snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown argument: '%s'",
307 if(!(strncmp(arg[0],"connect",7))) {
309 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
311 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
312 i=network_connect(&(ivac->net),channel);
314 sprintf(c_str,"channel %02d: connection in use",channel);
315 else if(i==N_E_NO_INFO)
316 sprintf(c_str,"channel %02d: channel not configured",channel);
318 sprintf(c_str,"channel %02d: connected to %s:%d",channel,
319 ivac->net.connection[channel].ip,
320 ivac->net.connection[channel].port);
321 event_math(ivac->net.connection[channel].fd,&(ivac->event),READ,ADD);
322 ivac_send_info(channel,ivac);
325 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
327 if(!(strncmp(arg[0],"close",5))) {
329 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
331 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
332 if(ivac->net.connection[channel].status&C_ESTABL) {
333 ivac_send_quit(channel,ivac);
334 event_math(ivac->net.connection[channel].fd,&(ivac->event),
336 network_close(&(ivac->net),channel);
337 sprintf(c_str,"channel %02d: connection closed",channel);
338 memset(&(ivac->challenger[channel]),0,sizeof(t_challenger));
341 sprintf(c_str,"channel %02d: no active connection",channel);
343 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
345 if(!(strncmp(arg[0],"select",6))) {
347 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
349 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
350 network_select(&(ivac->net),channel);
351 sprintf(c_str,"selected channel %d",channel);
353 else if(arg[1][0]='*') {
354 network_select(&(ivac->net),MAX_CONNECTIONS);
355 strcpy(c_str,"selected all channels");
357 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
359 if(!(strncmp(arg[0],"deselect",8))) {
361 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
363 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
364 network_deselect(&(ivac->net),channel);
365 sprintf(c_str,"deselected channel %d",channel);
367 else if(arg[1][0]='*') {
368 network_deselect(&(ivac->net),MAX_CONNECTIONS);
369 strcpy(c_str,"deselected all channels");
371 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
375 snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown command: '%s'",arg[0]);
377 /* call network functions */
378 network_manage_connection(&(ivac->net));
380 /* add console string to console buffer */
381 ivac_add_to_monitor(ivac,c_str);
383 /* refresh whole display content */
384 ivac_display_content(ivac);
386 /* delete content buffer + reset counter */
387 memset(input->content,0,input->c_count-1);
395 int ivac_display_head(t_display *display) {
401 for(x=0;x<display->max_x;x++) addch('#');
403 mvaddstr(1,(display->max_x-4)/2-4,"- ivac -");
404 mvaddstr(1,(display->max_x-2),"##");
406 for(x=0;x<display->max_x;x++) addch('#');
409 puts("#########################################################");
410 puts("##### ivac - - Copyright (C) 2004 Frank Zirkelbach #####");
411 puts("#########################################################");
417 int ivac_display_box(t_display *display) {
422 for(y=IVAC_PROMPT_LEN;y<display->max_y-IVAC_PROMPT_LEN;y++) {
424 mvaddch(y,display->max_x-1,'#');
431 int ivac_display_box_content(t_ivac *ivac) {
435 /* prepare challenger names */
436 for(channel=0;channel<MAX_CONNECTIONS;channel++)
437 if(ivac->challenger[channel].name[0]==0)
438 strcpy(ivac->challenger[channel].name,"<empty>");
442 for(channel=0;channel<MAX_CONNECTIONS;channel++) {
443 if(ivac->net.connection[channel].status&C_INFO_A)
444 printf("channel %02d: ip:%s port:%d status: %02x - name: %s\n",channel,
445 ivac->net.connection[channel].ip,
446 ivac->net.connection[channel].port,
447 ivac->net.connection[channel].status,
448 ivac->challenger[channel].name);
455 int ivac_display_console(t_display *display) {
460 move(display->max_y-IVAC_CONSOLE_LEN-IVAC_PROMPT_LEN-1,0);
461 for(x=0;x<display->max_x;x++) addch('#');
467 int ivac_display_console_content(t_ivac *ivac) {
473 for(y=0;y<IVAC_CONSOLE_LEN;y++) {
474 len=strlen(ivac->console[y]);
475 move(ivac->display.max_y-IVAC_CONSOLE_LEN-IVAC_PROMPT_LEN+y,2);
477 addch(((ivac->console[y][x]>' ')||(ivac->console[y][x]<='~'))
478 ?ivac->console[y][x]:' ');
479 for(x=len;x<IVAC_CONSOLE_STRING_LEN-4;x++) addch(' ');
485 for(i=0;i<IVAC_CONSOLE_LEN;i++)
486 printf("[ivac] console line %d: %s\n",i,ivac->console[i]);
492 int ivac_display_prompt(t_display *display) {
497 move(display->max_y-3,0);
498 for(x=0;x<display->max_x;x++) addch('#');
499 mvaddstr(display->max_y-2,0,"## command: ");
500 mvaddstr(display->max_y-2,display->max_x-2,"##");
501 move(display->max_y-1,0);
502 for(x=0;x<display->max_x;x++) addch('#');
509 int ivac_display_prompt_content(t_ivac *ivac) {
514 /* delete old command */
515 if(ivac->input.c_count==0) {
516 move(ivac->display.max_y-2,12);
517 for(x=12;x<ivac->display.max_x-1;x++) addch(' ');
520 for(x=0;x<ivac->input.c_count;x++)
521 mvaddch(ivac->display.max_y-2,x+12,ivac->input.content[x]);
524 printf("%c",ivac->input.content[ivac->input.c_count-1]);
531 int ivac_display(t_display *display) {
536 ivac_display_head(display);
539 ivac_display_box(display);
541 /* display console */
542 ivac_display_console(display);
544 /* display command prompt */
545 ivac_display_prompt(display);
550 int ivac_display_content(t_ivac *ivac) {
552 /* display box content */
553 ivac_display_box_content(ivac);
555 /* display console content */
556 ivac_display_console_content(ivac);
558 /* display prompt content */
559 ivac_display_prompt_content(ivac);
564 int ivac_add_to_monitor(t_ivac *ivac,char *msg) {
568 for(i=0;i<IVAC_CONSOLE_LEN-1;i++)
569 memcpy(ivac->console[i],ivac->console[i+1],IVAC_CONSOLE_STRING_LEN);
570 memcpy(ivac->console[IVAC_CONSOLE_LEN-1],msg,IVAC_CONSOLE_STRING_LEN);