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));
185 puts("[ivac] ivac_receive_info, unknown character");
194 int ivac_event_cb(t_event *event,void *ptr) {
198 char c_str[IVAC_CONSOLE_STRING_LEN];
202 /* incoming connection -- first contact => send info */
203 if(FD_ISSET(ivac->net.l_fd,&(event->rfds))) {
204 channel=network_manage_incoming(&(ivac->net));
205 if(channel==N_E_ACCEPT)
206 sprintf(c_str,"accept failed");
207 else if(channel==N_E_MAXC)
208 sprintf(c_str,"maximum connections reached");
210 sprintf(c_str,"connection from %s port %d on channel %d",
211 ivac->net.connection[channel].ip,
212 ivac->net.connection[channel].port,channel);
213 ivac_add_to_monitor(ivac,c_str);
214 event_math(ivac->net.connection[channel].fd,event,READ,ADD);
215 ivac_send_info(channel,ivac);
217 ivac_display_content(ivac);
220 /* wait for user info */
221 for(channel=0;channel<MAX_CONNECTIONS;channel++) {
222 if(ivac->net.connection[channel].status&C_ESTABL) {
223 /* remote is sending info */
224 if(FD_ISSET(ivac->net.connection[channel].fd,&(event->rfds)))
225 ivac_receive_info(channel,ivac);
226 // ivac_display_content(ivac);
230 /* user interaction */
231 if(FD_ISSET(0,&(event->rfds)))
232 input_get_event(&(ivac->input),ivac_parse_command,ivac);
237 int ivac_regular_cb(t_event *event,void *ptr) {
239 /* usual jobs like audio & video transmit ... */
244 int ivac_parse_command(t_input *input,void *ptr) {
251 char c_str[IVAC_CONSOLE_STRING_LEN];
252 char arg[IVAC_ARG_COUNT][IVAC_ARG_LEN];
258 /* refresh prompt content only! */
259 ivac_display_prompt_content(ivac);
261 /* parse command routines */
262 if(data[input->c_count-1]=='\n') {
264 /* delete console string + args */
265 memset(c_str,0,IVAC_CONSOLE_STRING_LEN);
266 for(j=0;j<IVAC_ARG_COUNT;j++) memset(arg[j],0,IVAC_ARG_LEN);
270 while(data[len]!='\n') len++;
272 while((i<len) && (j<IVAC_ARG_COUNT)) {
274 while((data[i+k]!=' ')&&(data[i+k]!='\n')) {
281 while(data[i+k]==' ') k++;
285 /* parse command aka arg[0] */
286 if(!(strncmp(arg[0],"quit",4))) {
288 sprintf(c_str,"ivac shutdown ...");
291 if(!(strncmp(arg[0],"set",3))) {
293 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
295 if(!(strncmp(arg[1],"name",4))) {
296 strncpy(ivac->username,arg[2],CHAR_USERNAME);
297 sprintf(c_str,"changed username to %s",ivac->username);
299 else if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
300 i=network_set_connection_info(&(ivac->net),channel,arg[2],atoi(arg[3]));
302 sprintf(c_str,"channel %02d: connection in use",channel);
304 sprintf(c_str,"channel %02d: set connection info",channel);
305 } else snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown argument: '%s'",
308 if(!(strncmp(arg[0],"connect",7))) {
310 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
312 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
313 i=network_connect(&(ivac->net),channel);
315 sprintf(c_str,"channel %02d: connection in use",channel);
316 else if(i==N_E_NO_INFO)
317 sprintf(c_str,"channel %02d: channel not configured",channel);
319 sprintf(c_str,"channel %02d: connected to %s:%d",channel,
320 ivac->net.connection[channel].ip,
321 ivac->net.connection[channel].port);
322 event_math(ivac->net.connection[channel].fd,&(ivac->event),READ,ADD);
323 ivac_send_info(channel,ivac);
326 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
328 if(!(strncmp(arg[0],"close",5))) {
330 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
332 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
333 if(ivac->net.connection[channel].status&C_ESTABL) {
334 ivac_send_quit(channel,ivac);
335 event_math(ivac->net.connection[channel].fd,&(ivac->event),
337 network_close(&(ivac->net),channel);
338 sprintf(c_str,"channel %02d: connection closed",channel);
339 memset(&(ivac->challenger[channel]),0,sizeof(t_challenger));
342 sprintf(c_str,"channel %02d: no active connection",channel);
344 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
346 if(!(strncmp(arg[0],"select",6))) {
348 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
350 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
351 network_select(&(ivac->net),channel);
352 sprintf(c_str,"selected channel %d",channel);
354 else if(arg[1][0]='*') {
355 network_select(&(ivac->net),MAX_CONNECTIONS);
356 strcpy(c_str,"selected all channels");
358 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
360 if(!(strncmp(arg[0],"deselect",8))) {
362 if((arg[1][0]>='0')&&(arg[1][0]<='9')) channel=atoi(arg[1]);
364 if((channel>=0)&&(channel<MAX_CONNECTIONS)) {
365 network_deselect(&(ivac->net),channel);
366 sprintf(c_str,"deselected channel %d",channel);
368 else if(arg[1][0]='*') {
369 network_deselect(&(ivac->net),MAX_CONNECTIONS);
370 strcpy(c_str,"deselected all channels");
372 else sprintf(c_str,"invalid argument: '%s'",arg[1]);
376 snprintf(c_str,IVAC_CONSOLE_STRING_LEN,"unknown command: '%s'",arg[0]);
378 /* call network functions */
379 network_manage_connection(&(ivac->net));
381 /* add console string to console buffer */
382 ivac_add_to_monitor(ivac,c_str);
384 /* refresh whole display content */
385 ivac_display_content(ivac);
387 /* delete content buffer + reset counter */
388 memset(input->content,0,input->c_count-1);
396 int ivac_display_head(t_display *display) {
402 for(x=0;x<display->max_x;x++) addch('#');
404 mvaddstr(1,(display->max_x-4)/2-4,"- ivac -");
405 mvaddstr(1,(display->max_x-2),"##");
407 for(x=0;x<display->max_x;x++) addch('#');
410 puts("#########################################################");
411 puts("##### ivac - - Copyright (C) 2004 Frank Zirkelbach #####");
412 puts("#########################################################");
418 int ivac_display_box(t_display *display) {
423 for(y=IVAC_PROMPT_LEN;y<display->max_y-IVAC_PROMPT_LEN;y++) {
425 mvaddch(y,display->max_x-1,'#');
432 int ivac_display_box_content(t_ivac *ivac) {
436 /* prepare challenger names */
437 for(channel=0;channel<MAX_CONNECTIONS;channel++)
438 if(ivac->challenger[channel].name[0]==0)
439 strcpy(ivac->challenger[channel].name,"<empty>");
443 for(channel=0;channel<MAX_CONNECTIONS;channel++) {
444 if(ivac->net.connection[channel].status&C_INFO_A)
445 printf("channel %02d: ip:%s port:%d status: %02x - name: %s\n",channel,
446 ivac->net.connection[channel].ip,
447 ivac->net.connection[channel].port,
448 ivac->net.connection[channel].status,
449 ivac->challenger[channel].name);
456 int ivac_display_console(t_display *display) {
461 move(display->max_y-IVAC_CONSOLE_LEN-IVAC_PROMPT_LEN-1,0);
462 for(x=0;x<display->max_x;x++) addch('#');
468 int ivac_display_console_content(t_ivac *ivac) {
474 for(y=0;y<IVAC_CONSOLE_LEN;y++) {
475 len=strlen(ivac->console[y]);
476 move(ivac->display.max_y-IVAC_CONSOLE_LEN-IVAC_PROMPT_LEN+y,2);
478 addch(((ivac->console[y][x]>' ')||(ivac->console[y][x]<='~'))
479 ?ivac->console[y][x]:' ');
480 for(x=len;x<IVAC_CONSOLE_STRING_LEN-4;x++) addch(' ');
486 for(i=0;i<IVAC_CONSOLE_LEN;i++)
487 printf("[ivac] console line %d: %s\n",i,ivac->console[i]);
493 int ivac_display_prompt(t_display *display) {
498 move(display->max_y-3,0);
499 for(x=0;x<display->max_x;x++) addch('#');
500 mvaddstr(display->max_y-2,0,"## command: ");
501 mvaddstr(display->max_y-2,display->max_x-2,"##");
502 move(display->max_y-1,0);
503 for(x=0;x<display->max_x;x++) addch('#');
510 int ivac_display_prompt_content(t_ivac *ivac) {
515 /* delete old command */
516 if(ivac->input.c_count==0) {
517 move(ivac->display.max_y-2,12);
518 for(x=12;x<ivac->display.max_x-1;x++) addch(' ');
521 for(x=0;x<ivac->input.c_count;x++)
522 mvaddch(ivac->display.max_y-2,x+12,ivac->input.content[x]);
525 printf("%c",ivac->input.content[ivac->input.c_count-1]);
532 int ivac_display(t_display *display) {
537 ivac_display_head(display);
540 ivac_display_box(display);
542 /* display console */
543 ivac_display_console(display);
545 /* display command prompt */
546 ivac_display_prompt(display);
551 int ivac_display_content(t_ivac *ivac) {
553 /* display box content */
554 ivac_display_box_content(ivac);
556 /* display console content */
557 ivac_display_console_content(ivac);
559 /* display prompt content */
560 ivac_display_prompt_content(ivac);
565 int ivac_add_to_monitor(t_ivac *ivac,char *msg) {
569 for(i=0;i<IVAC_CONSOLE_LEN-1;i++)
570 memcpy(ivac->console[i],ivac->console[i+1],IVAC_CONSOLE_STRING_LEN);
571 memcpy(ivac->console[IVAC_CONSOLE_LEN-1],msg,IVAC_CONSOLE_STRING_LEN);