+int ivac_send_info(int channel,t_ivac *ivac) {
+
+ char data[SEND_N_MAX];
+ int size;
+
+ size=strlen(ivac->username);
+
+ data[0]=IVAC_SEND_NAME;
+ data[1]=size;
+ strncpy(data+2,ivac->username,size);
+ size+=2;
+
+ data[size]=IVAC_SEND_G_CAP;
+ data[size+1]=1;
+ data[size+2]=ivac->g_cap;
+ size+=3;
+
+ data[size]=IVAC_SEND_AV_CAP;
+ data[size+1]=2;
+ data[size+2]=(ivac->av_cap)>>8;
+ data[size+3]=(ivac->av_cap)&0xff;
+ size+=4;
+
+ if(network_send(ivac->net.connection[channel].fd,data,size)==N_ERROR) {
+ puts("[ivac] ivac_send_info failed");
+ return ERROR;
+ }
+
+ return SUCCESS;
+}
+
+int ivac_receive_info(int channel,t_ivac *ivac) {
+
+ char data[SEND_N_MAX];
+ int count,length;
+
+ count=0;
+
+ if((length=network_receive(ivac->net.connection[channel].fd,
+ data,SEND_N_MAX))==N_ERROR) {
+ puts("[ivac] ivac_receive_info failed");
+ return ERROR;
+ }
+
+ while(length-count) {
+ switch(data[count]) {
+ case IVAC_SEND_NAME:
+ strncpy(ivac->challenger[channel].name,data+count+2,data[count+1]);
+ ivac->challenger[channel].name[data[count+1]]='\0';
+ count+=(data[count+1]+2);
+ break;
+ case IVAC_SEND_G_CAP:
+ ivac->challenger[channel].g_cap=data[count+2];
+ count+=3;
+ break;
+ case IVAC_SEND_AV_CAP:
+ ivac->challenger[channel].av_cap=data[count+2]<<8;
+ ivac->challenger[channel].av_cap|=data[count+3];
+ count+=4;
+ break;
+ default:
+ puts("[ivac] ivac_receive_info, unknown character");
+ return ERROR;
+ break;
+ }
+ }
+
+ return SUCCESS;
+}
+