3 This file is part of NetVis
4 Copyright @ 2008 Mikko Rasa, Mikkosoft Productions
5 Distributed unter the GPL
12 #include <msp/core/getopt.h>
13 #include <msp/debug/profilingscope.h>
14 #include <msp/gl/blend.h>
15 #include <msp/gl/framebuffer.h>
16 #include <msp/gl/immediate.h>
17 #include <msp/gl/matrix.h>
18 #include <msp/gl/misc.h>
19 #include <msp/gl/projection.h>
20 #include <msp/gl/texture2d.h>
21 #include <msp/gl/transform.h>
22 #include <msp/io/print.h>
23 #include <msp/strings/format.h>
24 #include <msp/time/units.h>
25 #include <msp/time/utils.h>
36 NetVis::NetVis(int argc, char **argv):
42 max_visible_hosts(30),
46 throw usage_error("No interface given");
50 pcap = pcap_open_live(iface.c_str(), 128, true, 0, err);
52 throw runtime_error(err);
54 if(pcap_setnonblock(pcap, true, err)==-1)
55 throw runtime_error(err);
57 pcap_lookupnet(iface.c_str(), &localnet, &localnet_mask, err);
58 localnet = ntohl(localnet);
59 localnet_mask = ntohl(localnet_mask);
61 resolver = new Resolver;
63 wnd = new Graphics::SimpleGLWindow(1024, 768);
64 wnd->set_title("NetVis");
65 wnd->signal_close.connect(sigc::bind(sigc::mem_fun(this, &NetVis::exit), 0));
68 GL::Blend::alpha().bind();
71 DataFile::load(*font, "dejavu-10.font");
73 history = new History(*this, 301, 100);
87 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
89 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
91 for(map<unsigned, Port *>::iterator i=ports.begin(); i!=ports.end(); ++i)
93 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
99 Msp::Time::TimeStamp t = Msp::Time::now();
100 Msp::Time::TimeDelta dt;
105 if(tick_t>fps_t+Msp::Time::sec)
107 fps = frames/((tick_t-fps_t)/Msp::Time::sec);
112 wnd->get_display().tick();
114 while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
117 history->tick(tick_t);
120 float min_activity = numeric_limits<float>::max();
121 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
124 min_activity = min(min_activity, i->second->get_activity());
126 float del_limit = pow(10, 6-0.1*static_cast<int>(max_hosts-hosts.size()-disabled_hosts.size()));
127 for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end();)
131 if(i->second->get_activity()>min_activity)
133 i->second->set_active(true);
135 for(unsigned j=0; j<100; ++j)
136 i->second->tick(100*Time::msec);
137 disabled_hosts.erase(i++);
139 else if(i->second->get_activity()<del_limit)
141 resolver->cancel(i->second);
143 disabled_hosts.erase(i++);
149 if(hosts.size()>max_visible_hosts)
151 list<float> activity;
152 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
153 activity.push_back(i->second->get_activity());
156 list<float>::iterator j = activity.begin();
157 advance(j, activity.size()-max_visible_hosts);
160 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
162 if(i->second->get_activity()<limit)
164 i->second->set_active(false);
165 disabled_hosts.insert(*i);
173 for(map<unsigned, Port *>::iterator i=ports.begin(); i!=ports.end();)
177 if(!i->second->is_registered() && i->second->get_activity()<0.1)
186 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
189 if((*i)->get_stale())
192 i = packets.erase(i);
204 void NetVis::render()
206 GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT);
208 GL::MatrixStack::projection() = GL::Matrix::ortho_centered(1024, 768);
209 GL::MatrixStack::modelview() = GL::Matrix();
211 for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
214 GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
215 imm.begin(GL::QUADS);
216 for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
221 GL::MatrixStack::modelview() = GL::Matrix::translation(-500, 360, 0);
223 for(map<unsigned, Port *>::iterator i=ports.begin(); (i!=ports.end() && n<50); ++i)
225 float act = i->second->get_activity();
226 if((i->second->is_registered() && act>1) || act>200)
229 GL::MatrixStack::modelview() *= GL::Matrix::translation(0, -12, 0);
234 GL::MatrixStack::modelview() = GL::Matrix::translation(-500, -348, 0);
235 GL::MatrixStack::modelview() *= GL::Matrix::scaling(10);
236 font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
237 GL::MatrixStack::modelview() *= GL::Matrix::translation(0, -1.2, 0);
238 font->draw_string(format("%d ports", ports.size()));
239 GL::MatrixStack::modelview() *= GL::Matrix::translation(0, -1.2, 0);
240 font->draw_string(format("%.2f fps", fps));
241 GL::Texture::unbind();
243 GL::MatrixStack::modelview() = GL::Matrix::translation(170, -370, 0);
247 Host &NetVis::get_host(unsigned a)
249 map<unsigned, Host *>::iterator i = hosts.find(a);
253 i = disabled_hosts.find(a);
254 if(i!=disabled_hosts.end())
257 Host *host = new Host(*this, a);
258 if((a&localnet_mask)==localnet)
259 host->set_local(true);
260 resolver->push(host);
261 host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
262 for(unsigned j=0; j<100; ++j)
263 host->tick(100*Time::msec);
268 Port &NetVis::get_port(unsigned number)
270 map<unsigned, Port *>::iterator i = ports.find(number);
273 Port *port = new Port(*this, number);
274 ports[number] = port;
278 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *cap, const unsigned char *data)
280 NetVis *self = reinterpret_cast<NetVis *>(user);
284 const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
285 self->handle_ethernet(ctx, eth, cap->caplen);
288 void NetVis::handle_ethernet(CaptureContext &ctx, const ethhdr *eth, unsigned len)
290 ctx.size = ctx.cap_hdr->len-sizeof(ethhdr);
292 int proto = ntohs(eth->h_proto);
295 const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
296 handle_ipv4(ctx, ip, len-sizeof(ethhdr));
299 IO::print("Unknown protocol in eth: %d\n", proto);
302 void NetVis::handle_ipv4(CaptureContext &ctx, const iphdr *ip, unsigned len)
304 ctx.src_host = &get_host(ntohl(ip->saddr));
305 if((ntohl(ip->daddr)&0xFF)!=0xFF)
306 ctx.dst_host = &get_host(ntohl(ip->daddr));
308 if(ip->protocol==IPPROTO_TCP)
310 const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
311 handle_tcp(ctx, tcp, len-sizeof(iphdr));
313 else if(ip->protocol==IPPROTO_UDP)
315 const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
316 handle_udp(ctx, udp, len-sizeof(iphdr));
319 IO::print("Unknown protocol in ip: %d\n", ip->protocol);
323 void NetVis::handle_tcp(CaptureContext &ctx, const tcphdr *tcp, unsigned)
325 ctx.src_port = &get_port(ntohs(tcp->source));
326 ctx.dst_port = &get_port(ntohs(tcp->dest));
330 void NetVis::handle_udp(CaptureContext &ctx, const udphdr *udp, unsigned)
332 ctx.src_port = &get_port(ntohs(udp->source));
333 ctx.dst_port = &get_port(ntohs(udp->dest));
337 void NetVis::handle_packet(CaptureContext &ctx)
340 if(ctx.src_port && ctx.dst_port)
342 if(ctx.src_port->is_registered()!=ctx.dst_port->is_registered())
344 if(ctx.src_port->is_registered())
349 else if(ctx.src_port->get_number()<ctx.dst_port->get_number())
357 float throttle = ctx.src_host->send_packet();
360 packets.push_back(new Packet(*ctx.src_host, ctx.dst_host, port->get_color(), ctx.size));
361 packets.back()->tick(-throttle*Msp::Time::sec);
364 ctx.src_host->add_activity(ctx.size);
366 ctx.dst_host->add_activity(ctx.size);
369 ctx.src_port->add_activity(ctx.size);
371 ctx.dst_port->add_activity(ctx.size);
373 bool local_src = ctx.src_host->is_local();
374 bool local_dst = (ctx.dst_host && ctx.dst_host->is_local());
375 if(local_src && !local_dst)
376 history->activity(0, ctx.size);
377 else if(local_dst && !local_src)
378 history->activity(ctx.size, 0);
381 void NetVis::sighandler(int)
387 NetVis::CaptureContext::CaptureContext():