X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fnetvis.cpp;h=cece749e9be6a2ab6003e5d02447673a5ad2d983;hb=c147c9caaf9bc2f6323baf188a438ced9f0f5894;hp=711788b86062c6e2d388cd1025cc1d7c350f343e;hpb=229e1d6ab66a9e987ffe3cd4a8de7c7f874f6de1;p=netvis.git

diff --git a/source/netvis.cpp b/source/netvis.cpp
index 711788b..cece749 100644
--- a/source/netvis.cpp
+++ b/source/netvis.cpp
@@ -1,9 +1,22 @@
-#include <iostream>
+/* $Id$
+
+This file is part of NetVis
+Copyright @ 2008 Mikko Rasa, Mikkosoft Productions
+Distributed unter the GPL
+*/
+
+#include <limits>
+#include <cstdlib>
+#include <cmath>
+#include <signal.h>
 #include <netinet/ip.h>
 #include <netinet/tcp.h>
 #include <netinet/udp.h>
 #include <linux/if_ether.h>
 #include <msp/core/except.h>
+#include <msp/debug/profilingscope.h>
+#include <msp/gl/blend.h>
+#include <msp/gl/framebuffer.h>
 #include <msp/gl/immediate.h>
 #include <msp/gl/matrix.h>
 #include <msp/gl/misc.h>
@@ -11,182 +24,370 @@
 #include <msp/gl/texture2d.h>
 #include <msp/gl/transform.h>
 #include <msp/strings/formatter.h>
+#include <msp/time/units.h>
 #include <msp/time/utils.h>
 #include "host.h"
 #include "netvis.h"
 #include "packet.h"
+#include "port.h"
+#include "resolver.h"
 
 using namespace std;
 using namespace Msp;
 
-NetVis::NetVis(int /*argc*/, char **argv)
+NetVis::NetVis(int argc, char **argv):
+	pcap(0),
+	resolver(0),
+	wnd(0),
+	font(0),
+	max_hosts(1000),
+	max_visible_hosts(30),
+	draw_labels(true),
+	blend(true),
+	frames(0)
 {
-	iface=argv[1];
-}
+	if(argc<2)
+		throw UsageError("No interface given");
+	iface = argv[1];
 
-int NetVis::main()
-{
 	char err[1024];
-	pcap=pcap_open_live(iface.c_str(), 128, true, 0, err);
+	pcap = pcap_open_live(iface.c_str(), 128, true, 0, err);
 	if(!pcap)
 		throw Exception(err);
 
 	if(pcap_setnonblock(pcap, true, err)==-1)
 		throw Exception(err);
 
-	dpy=new Graphics::Display;
-	wnd=new Graphics::Window(*dpy, 1024, 768);
-	glc=new Graphics::GLContext(*wnd);
+	pcap_lookupnet(iface.c_str(), &localnet, &localnet_mask, err);
+	localnet = ntohl(localnet);
+	localnet_mask = ntohl(localnet_mask);
+
+	resolver = new Resolver;
+
+	wnd = new Graphics::SimpleGLWindow(1024, 768);
 	wnd->set_title("NetVis");
+	wnd->signal_close.connect(sigc::bind(sigc::mem_fun(this, &NetVis::exit), 0));
+	wnd->signal_key_press.connect(sigc::mem_fun(this, &NetVis::key_press));
 	wnd->show();
 
-	GL::enable(GL_BLEND);
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+	GL::enable(GL::BLEND);
+	GL::blend_func(GL::SRC_ALPHA, GL::ONE_MINUS_SRC_ALPHA);
 
-	font=new GL::Font;
+	font = new GL::Font;
 	DataFile::load(*font, "dejavu-10.font");
-	font_tex=new GL::Texture2D;
-	DataFile::load(*font_tex, "dejavu-10.tex");
-	font->set_texture(*font_tex);
 
-	Application::main();
+	catch_signal(SIGINT);
+}
 
-	delete glc;
+NetVis::~NetVis()
+{
+	delete resolver;
+
+	delete font;
 	delete wnd;
-	delete dpy;
 
-	return exit_code;
+	pcap_close(pcap);
+	for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
+		delete i->second;
+	for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end(); ++i)
+		delete i->second;
+	for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
+		delete *i;
 }
 
 void NetVis::tick()
 {
-	Msp::Time::TimeStamp t=Msp::Time::now();
-	if(!last_tick)
-		last_tick=t;
-	Msp::Time::TimeDelta dt=t-last_tick;
-	last_tick=t;
+	Msp::Time::TimeStamp t = Msp::Time::now();
+	Msp::Time::TimeDelta dt;
+	if(tick_t)
+		dt = t-tick_t;
+	tick_t = t;
 
-	dpy->tick();
-
-	pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this));
-
-	glClear(GL_COLOR_BUFFER_BIT);
+	if(tick_t>fps_t+Msp::Time::sec)
+	{
+		fps = frames/((tick_t-fps_t)/Msp::Time::sec);
+		fps_t = tick_t;
+		frames = 0;
+	}
 
-	GL::matrix_mode(GL::PROJECTION);
-	GL::load_identity();
-	GL::ortho_centered(1024, 768);
-	GL::matrix_mode(GL::MODELVIEW);
-	GL::load_identity();
+	wnd->get_display().tick();
 
-	for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
 	{
-		i->second->tick(dt);
-		i->second->render();
+		Debug::ProfilingScope s(profiler, "capture");
+		while(pcap_dispatch(pcap, -1, &capture_handler, reinterpret_cast<unsigned char *>(this))>0) ;
 	}
-	for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
+
 	{
-		(*i)->tick(dt);
-		(*i)->render();
-		if((*i)->get_stale())
+		Debug::ProfilingScope s(profiler, "tick");
+
+		resolver->tick();
+
+		float min_activity = numeric_limits<float>::max();
+		for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
+		{
+			i->second->tick(dt);
+			min_activity = min(min_activity, i->second->get_activity());
+		}
+		float del_limit = pow(10, 6-0.1*(max_hosts-hosts.size()-disabled_hosts.size()));
+		for(map<unsigned, Host *>::iterator i=disabled_hosts.begin(); i!=disabled_hosts.end();)
+		{
+			i->second->tick(dt);
+
+			if(i->second->get_activity()>min_activity)
+			{
+				i->second->set_active(true);
+				hosts.insert(*i);
+				disabled_hosts.erase(i++);
+			}
+			else if(i->second->get_activity()<del_limit)
+			{
+				delete i->second;
+				disabled_hosts.erase(i++);
+			}
+			else
+				++i;
+		}
+
+		if(hosts.size()>max_visible_hosts)
+		{
+			list<float> activity;
+			for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
+				activity.push_back(i->second->get_activity());
+			activity.sort();
+
+			list<float>::iterator j = activity.begin();
+			advance(j, activity.size()-max_visible_hosts);
+			float limit = *j;
+
+			for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end();)
+			{
+				if(i->second->get_activity()<limit)
+				{
+					i->second->set_active(false);
+					disabled_hosts.insert(*i);
+					hosts.erase(i++);
+				}
+				else
+					++i;
+			}
+		}
+
+		for(list<Packet *>::iterator i=packets.begin(); i!=packets.end();)
 		{
-			delete *i;
-			i=packets.erase(i);
+			(*i)->tick(dt);
+			if((*i)->get_stale())
+			{
+				delete *i;
+				i = packets.erase(i);
+			}
+			else
+				++i;
 		}
-		else
-			++i;
 	}
 
-	GL::translate(-500, 360, 0);
-	for(map<unsigned, GL::Color>::iterator i=port_colors.begin(); i!=port_colors.end(); ++i)
 	{
-		GL::Color &color=i->second;
+		Debug::ProfilingScope s(profiler, "render");
+		GL::clear(GL::COLOR_BUFFER_BIT);
 
-		GL::push_matrix();
+		GL::matrix_mode(GL::PROJECTION);
+		GL::load_identity();
+		GL::ortho_centered(1024, 768);
+		GL::matrix_mode(GL::MODELVIEW);
+		GL::load_identity();
 
-		GL::Immediate imm((GL::COLOR4_UBYTE,GL::VERTEX2));
-		imm.begin(GL::QUADS);
-		imm.color(color.r, color.g, color.b, color.a);
-		for(float x=0; x<0.5; x+=0.2)
+		for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
+			i->second->render();
+		if(draw_labels)
 		{
-			imm.vertex(x+0, 0);
-			imm.vertex(x+10, 0);
-			imm.vertex(x+10, 10);
-			imm.vertex(x+0, 10);
+			for(map<unsigned, Host *>::iterator i=hosts.begin(); i!=hosts.end(); ++i)
+				i->second->render_label();
+			GL::Texture::unbind();
 		}
+		GL::Immediate imm((GL::COLOR4_UBYTE, GL::VERTEX2));
+		imm.begin(GL::QUADS);
+		for(list<Packet *>::iterator i=packets.begin(); i!=packets.end(); ++i)
+			(*i)->render(imm);
 		imm.end();
 
-		GL::translate(15, 1, 0);
+		GL::push_matrix();
+		GL::translate(-500, 360, 0);
+		unsigned n = 0;
+		for(map<unsigned, Port>::iterator i=ports.begin(); (i!=ports.end() && n<50); ++i, ++n)
+		{
+			const GL::Color &color = i->second.get_color();
+
+			imm.begin(GL::QUADS);
+			imm.color(color.r, color.g, color.b, color.a);
+			for(unsigned x=0; x<=4; x+=2)
+			{
+				imm.vertex(x+0, 0);
+				imm.vertex(x+10, 0);
+				imm.vertex(x+10, 10);
+				imm.vertex(x+0, 10);
+			}
+			imm.end();
+
+			GL::translate(0, -12, 0);
+		}
+		GL::pop_matrix();
+
+		GL::push_matrix();
+		if(draw_labels)
+		{
+			GL::push_matrix();
+			GL::translate(-484, 361, 0);
+			GL::scale_uniform(10);
+			n = 0;
+			for(map<unsigned, Port>::iterator i=ports.begin(); (i!=ports.end() && n<50); ++i, ++n)
+			{
+				GL::Immediate imm2((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
+				imm.color(1.0f, 1.0f, 1.0f);
+				font->draw_string(i->second.get_name(), imm2);
+
+				GL::translate(0, -1.2, 0);
+			}
+			GL::pop_matrix();
+			GL::Texture::unbind();
+		}
+		GL::pop_matrix();
+
+		GL::push_matrix();
+		GL::translate(-500, -360, 0);
 		GL::scale_uniform(10);
-		glColor4f(1.0, 1.0, 1.0, 1.0);
-		font->draw_string(format("%d", i->first));
+		font->draw_string(format("%d hosts", hosts.size()+disabled_hosts.size()));
+		GL::translate(0, -1.2, 0);
+		font->draw_string(format("%.2f fps", fps));
+		GL::pop_matrix();
 		GL::Texture::unbind();
 
-		GL::pop_matrix();
-		GL::translate(0, -12, 0);
+		wnd->swap_buffers();
 	}
 
-	glc->swap_buffers();
+	++frames;
 }
 
 Host &NetVis::get_host(unsigned a)
 {
-	map<unsigned, Host *>::iterator i=hosts.find(a);
+	map<unsigned, Host *>::iterator i = hosts.find(a);
 	if(i!=hosts.end())
 		return *i->second;
 
-	Host *host=new Host(*this, a);
-	host->set_position(Vector2(rand()*30.0/RAND_MAX-15.0, rand()*20.0/RAND_MAX-10.0));
-	hosts[a]=host;
+	i = disabled_hosts.find(a);
+	if(i!=disabled_hosts.end())
+		return *i->second;
+
+	Host *host = new Host(*this, a);
+	if((a&localnet_mask)==localnet)
+		host->set_local(true);
+	resolver->push(host);
+	host->set_position(Vector2(rand()*400.0/RAND_MAX-200.0, rand()*400.0/RAND_MAX-200.0));
+	hosts[a] = host;
 	return *host;
 }
 
-GL::Color &NetVis::get_port_color(unsigned port)
+GL::Color NetVis::generate_color(bool privileged) const
 {
-	map<unsigned, GL::Color>::iterator i=port_colors.find(port);
-	if(i!=port_colors.end())
+	GL::Color color;
+	color.r = rand()*1.0/RAND_MAX;
+	color.g = rand()*1.0/RAND_MAX;
+	color.b = rand()*1.0/RAND_MAX;
+	float high = max(max(color.r, color.g), color.b);
+	color = color*(1.0/high);
+	if(privileged)
+	{
+		float low = min(min(color.r, color.g), color.b);
+		color = (color+-low)*(1/(1-low));
+	}
+	else
+		color = color*0.6+0.4;
+	return color;
+}
+
+const Port &NetVis::get_port(unsigned number)
+{
+	map<unsigned, Port>::iterator i = ports.find(number);
+	if(i!=ports.end())
 		return i->second;
 
-	GL::Color color;
-	while(1)
+	GL::Color best_color;
+	float best_score = 0;
+	for(unsigned j=0; (j<100 && best_score<1); ++j)
 	{
-		color.r=rand()*1.0/RAND_MAX;
-		color.g=rand()*1.0/RAND_MAX;
-		color.b=rand()*1.0/RAND_MAX;
-		if(color.r>0.5 || color.g>0.5 || color.b>0.7)
-			break;
+		GL::Color color = generate_color(number<1024);
+
+		float score = 2;
+		for(i=ports.begin(); i!=ports.end(); ++i)
+		{
+			const GL::Color &other = i->second.get_color();
+			float dr = color.r-other.r;
+			float dg = color.g-other.g;
+			float db = color.b-other.b;
+			score = min(score, dr*dr+dg*dg+db*db);
+		}
+		if(score>best_score)
+		{
+			best_score = score;
+			best_color = color;
+		}
+	}
+	best_color.a = 0.4f;
+	i = ports.insert(map<unsigned, Port>::value_type(number, Port(number, best_color))).first;
+	return i->second;
+}
+
+void NetVis::key_press(unsigned key, unsigned, wchar_t)
+{
+	if(key==46)
+		draw_labels = !draw_labels;
+	else if(key==56)
+	{
+		blend = !blend;
+		GL::set(GL_BLEND, blend);
 	}
-	color.a=0.4f;
-	return port_colors[port]=color;
 }
 
 void NetVis::capture_handler(unsigned char *user, const pcap_pkthdr *, const unsigned char *data)
 {
-	NetVis *self=reinterpret_cast<NetVis *>(user);
+	NetVis *self = reinterpret_cast<NetVis *>(user);
 
-	const ethhdr *eth=reinterpret_cast<const ethhdr *>(data);
+	const ethhdr *eth = reinterpret_cast<const ethhdr *>(data);
 	if(ntohs(eth->h_proto)==ETH_P_IP)
 	{
-		const iphdr *ip=reinterpret_cast<const iphdr *>(eth+1);
-
-		//cout<<"IP packet of "<<hdr->len<<'/'<<ntohs(ip->tot_len)<<" bytes\n";
+		const iphdr *ip = reinterpret_cast<const iphdr *>(eth+1);
 
-		unsigned port=0;
+		unsigned size = ntohs(ip->tot_len);
+		unsigned port = 0;
 		if(ip->protocol==IPPROTO_TCP)
 		{
-			const tcphdr *tcp=reinterpret_cast<const tcphdr *>(ip+1);
-			port=min(ntohs(tcp->source), ntohs(tcp->dest));
+			const tcphdr *tcp = reinterpret_cast<const tcphdr *>(ip+1);
+			port = min(ntohs(tcp->source), ntohs(tcp->dest));
 		}
 		else if(ip->protocol==IPPROTO_UDP)
 		{
-			const udphdr *udp=reinterpret_cast<const udphdr *>(ip+1);
-			port=min(ntohs(udp->source), ntohs(udp->dest));
+			const udphdr *udp = reinterpret_cast<const udphdr *>(ip+1);
+			port = min(ntohs(udp->source), ntohs(udp->dest));
 		}
-		Host &shost=self->get_host(ntohl(ip->saddr));
-		Host *dhost=0;
+		Host &shost = self->get_host(ntohl(ip->saddr));
+		Host *dhost = 0;
 		if((ntohl(ip->daddr)&0xFF)!=0xFF)
-			dhost=&self->get_host(ntohl(ip->daddr));
-		self->packets.push_back(new Packet(shost, dhost, self->get_port_color(port), ntohs(ip->tot_len)));
+			dhost = &self->get_host(ntohl(ip->daddr));
+
+		float throttle = shost.send_packet();
+		if(throttle<1)
+		{
+			self->packets.push_back(new Packet(shost, dhost, self->get_port(port).get_color(), size));
+			self->packets.back()->tick(-throttle*Msp::Time::sec);
+		}
+
+		shost.add_activity(size);
+		if(dhost)
+			dhost->add_activity(size);
 	}
 }
 
+void NetVis::sighandler(int)
+{
+	exit(0);
+}
+
 Application::RegApp<NetVis> NetVis::reg;