additional fixes for citadel support + performance

sgfw/dns.go

@@ -68,6 +68,9 @@ func (dc *dnsCache) processDNS(pkt *nfqueue.NFQPacket) {
 		pinfo := getEmptyPInfo()
 		if !isNSTrusted(srcip) {
 			pinfo, _ = findProcessForPacket(pkt, true, procsnitch.MATCH_LOOSEST)
+			if pinfo == nil {
+				findProcessForPacket(pkt, false, procsnitch.MATCH_LOOSEST)
+			}
 
 			if pinfo == nil {
 				if !FirewallConfig.LogRedact {
@@ -77,6 +80,8 @@ func (dc *dnsCache) processDNS(pkt *nfqueue.NFQPacket) {
 				}
 
 				return
+			} else {
+				log.Warningf("%v", pinfo)
 			}
 		}
 		//log.Notice("XXX: PROCESS LOOKUP -> ", pinfo)

sgfw/ipc.go

@@ -18,13 +18,14 @@ const ReceiverSocketPath = "/var/run/fw-daemon/fwoz.sock"
 type OzInitProc struct {
 	Name      string
 	Pid       int
+	Address	  net.IP
 	SandboxID int
 }
 
 var OzInitPids []OzInitProc = []OzInitProc{}
 var OzInitPidsLock = sync.Mutex{}
 
-func addInitPid(pid int, name string, sboxid int) {
+func addInitPid(pid int, name string, sboxid int, address net.IP) {
 	fmt.Println("::::::::::: init pid added: ", pid, " -> ", name)
 	OzInitPidsLock.Lock()
 	defer OzInitPidsLock.Unlock()
@@ -35,7 +36,7 @@ func addInitPid(pid int, name string, sboxid int) {
 		}
 	}
 
-	ozi := OzInitProc{Name: name, Pid: pid, SandboxID: sboxid}
+	ozi := OzInitProc{Name: name, Pid: pid, SandboxID: sboxid, Address:address}
 	OzInitPids = append(OzInitPids, ozi)
 }
 
@@ -160,7 +161,7 @@ func ReceiverLoop(fw *Firewall, c net.Conn) {
 			if tokens[0] == "register-init" && len(tokens) >= 3 {
 				initp := tokens[1]
 
-				initpid, err := strconv.Atoi(initp)
+				//initpid, err := strconv.Atoi(initp)
 
 				if err != nil {
 					log.Notice("IPC received invalid oz-init pid: ", initp)
@@ -168,7 +169,7 @@ func ReceiverLoop(fw *Firewall, c net.Conn) {
 					return
 				}
 
-				sboxid, err := strconv.Atoi(tokens[3])
+				//sboxid, err := strconv.Atoi(tokens[3])
 				if err != nil {
 					log.Notice("IPC received invalid oz sbox number: ", tokens[3])
 					log.Notice("Data: %v", data)
@@ -178,12 +179,12 @@ func ReceiverLoop(fw *Firewall, c net.Conn) {
 
 				// ozname := strings.Join(tokens[2:], " ")
 				log.Notice("IPC message for register-init OK.")
-				addInitPid(initpid, tokens[2], sboxid)
+				//addInitPid(initpid, tokens[2], sboxid)
 				c.Write([]byte("OK"))
 				return
 			} else if tokens[0] == "unregister-init" && len(tokens) == 2 {
 				initp := tokens[1]
-				initpid, err := strconv.Atoi(initp)
+				//initpid, err := strconv.Atoi(initp)
 
 				if err != nil {
 					log.Notice("IPC received invalid oz-init pid: ", initp)
@@ -191,7 +192,7 @@ func ReceiverLoop(fw *Firewall, c net.Conn) {
 					return
 				}
 
-				removeInitPid(initpid)
+				//removeInitPid(initpid)
 				c.Write([]byte("OK.\n"))
 			}
 
@@ -283,7 +284,7 @@ func OzReceiver(fw *Firewall) {
 			log.Warning("Adding existing Oz sandbox init pids...")
 			for s := 0; s < len(sboxes); s++ {
 				//profname := fmt.Sprintf("%s (%d)", sboxes[s].Profile, sboxes[s].Id)
-				addInitPid(sboxes[s].InitPid, sboxes[s].Name, sboxes[s].Id)
+				addInitPid(sboxes[s].InitPid, sboxes[s].Name, sboxes[s].Id, sboxes[s].Address)
 			}
 		} else {
 			log.Warning("It does not appear there were any Oz sandboxed processes already launched.")

sgfw/iptables.go

@@ -9,14 +9,18 @@ import (
 
 const iptablesRule = "OUTPUT -t mangle -m conntrack --ctstate NEW -j NFQUEUE --queue-num 0 --queue-bypass"
 const realmsRule = "FORWARD -t mangle -m conntrack --ctstate NEW -j NFQUEUE --queue-num 0 --queue-bypass"
+const dnsRule2 = "FORWARD --protocol udp --sport 53 -j NFQUEUE --queue-num 0 --queue-bypass"
 const dnsRule = "INPUT --protocol udp --sport 53 -j NFQUEUE --queue-num 0 --queue-bypass"
 
 //const logRule = "OUTPUT --protocol tcp -m mark --mark 1 -j LOG"
 const blockRule = "OUTPUT --protocol tcp -m mark --mark 1 -j REJECT"
+const blockRule2 = "FORWARD --protocol tcp -m mark --mark 1 -j REJECT"
 
 func setupIPTables() {
 	//	addIPTRules(iptablesRule, dnsRule, logRule, blockRule)
-	addIPTRules(iptablesRule, realmsRule, dnsRule, blockRule)
+//	addIPTRules(iptablesRule, realmsRule, dnsRule, dnsRule2, blockRule,blockRule2)
+	//addIPTRules(iptablesRule, realmsRule, dnsRule, blockRule)
+	addIPTRules(iptablesRule, realmsRule, dnsRule, dnsRule2, blockRule,blockRule2)
 }
 
 func addIPTRules(rules ...string) {

sgfw/policy.go

@@ -606,7 +606,7 @@ func (fw *Firewall) filterPacket(pkt *nfqueue.NFQPacket, timestamp time.Time) {
 		//		return
 	} else {
 		ppath = pinfo.ExePath
-		optstring = fmt.Sprintf("Realm: %s", pinfo.Realm);
+		optstring = fmt.Sprintf("Realm: %s", pinfo.Realm)
 		cf := strings.Fields(pinfo.CmdLine)
 		if len(cf) > 1 && strings.HasPrefix(cf[1], "/") {
 			for _, intp := range _interpreters {
@@ -846,53 +846,61 @@ func findProcessForPacket(pkt *nfqueue.NFQPacket, reverse bool, strictness int)
 		res = procsnitch.LookupICMPSocketProcessAll(srcip, dstip, icode, nil)
 	}
 
+	if res != nil {
+		res.Sandbox = "citadel"
+		res.Realm = "citadel"
+	}
+
 	if res == nil {
 		removePids := make([]int, 0)
 		OzInitPidsLock.Lock()
-		
+
 		for i := 0; i < len(OzInitPids); i++ {
-			data := ""
+			if OzInitPids[i].Address.Equal(srcip) {
-			fname := fmt.Sprintf("/proc/%d/root/proc/1/net/%s", OzInitPids[i].Pid, proto)
+				data := ""
-			//fmt.Println("XXX: opening: ", fname)
+				fname := fmt.Sprintf("/proc/%d/root/proc/1/net/%s", OzInitPids[i].Pid, proto)
-			bdata, err := readFileDirect(fname)
+				//fmt.Println("XXX: opening: ", fname)
+				bdata, err := readFileDirect(fname)
 
-			if err != nil {
+				if err != nil {
-				fmt.Println("Error reading proc data from ", fname, ": ", err)
+					fmt.Println("Error reading proc data from ", fname, ": ", err)
 
-				if err == syscall.ENOENT {
+					if err == syscall.ENOENT {
-					removePids = append(removePids, OzInitPids[i].Pid)
+						removePids = append(removePids, OzInitPids[i].Pid)
-				}
+					}
 
-				continue
+					continue
-			} else {
+				} else {
-				data = string(bdata)
+					data = string(bdata)
-				lines := strings.Split(data, "\n")
+					lines := strings.Split(data, "\n")
-				rlines := make([]string, 0)
+					rlines := make([]string, 0)
 
-				for l := 0; l < len(lines); l++ {
+					for l := 0; l < len(lines); l++ {
-					lines[l] = strings.TrimSpace(lines[l])
+						lines[l] = strings.TrimSpace(lines[l])
-					ssplit := strings.Split(lines[l], ":")
+						ssplit := strings.Split(lines[l], ":")
 
-					if len(ssplit) != 6 {
+						if len(ssplit) != 6 {
-						continue
+							continue
-					}
+						}
 
-					rlines = append(rlines, strings.Join(ssplit, ":"))
+						rlines = append(rlines, strings.Join(ssplit, ":"))
-				}
+					}
 
-				if proto == "tcp" {
+					if proto == "tcp" {
-					//res = procsnitch.LookupTCPSocketProcessAll(srcip, srcp, dstip, dstp, rlines)
+						//res = procsnitch.LookupTCPSocketProcessAll(srcip, srcp, dstip, dstp, rlines)
-					res = procsnitch.L2(srcp, dstip, dstp, rlines)
+						res = procsnitch.L2(srcp, dstip, dstp, rlines)
-				} else if proto == "udp" {
+					} else if proto == "udp" {
-					res = procsnitch.LookupUDPSocketProcessAll(srcip, srcp, dstip, dstp, rlines, strictness)
+						res = procsnitch.LookupUDPSocketProcessAll(srcip, srcp, dstip, dstp, rlines, strictness)
-				} else if proto == "icmp" {
+					} else if proto == "icmp" {
-					res = procsnitch.LookupICMPSocketProcessAll(srcip, dstip, icode, rlines)
+						res = procsnitch.LookupICMPSocketProcessAll(srcip, dstip, icode, rlines)
-				}
+					}
 
-				if res != nil {
+					if res != nil {
-					optstr = "Realm: " + OzInitPids[i].Name
+						optstr = "Realm: " + OzInitPids[i].Name
-					res.ExePath = GetRealRoot(res.ExePath, OzInitPids[i].Pid)
+						res.Sandbox = OzInitPids[i].Name
-					break
+						res.ExePath = GetRealRoot(res.ExePath, OzInitPids[i].Pid)
+						break
+					}
 				}
 			}
 
@@ -912,10 +920,15 @@ func findProcessForPacket(pkt *nfqueue.NFQPacket, reverse bool, strictness int)
 func basicAllowPacket(pkt *nfqueue.NFQPacket) bool {
 	srcip, dstip := getPacketIPAddrs(pkt)
 	if pkt.Packet.Layer(layers.LayerTypeUDP) != nil {
-		_, dport := getPacketUDPPorts(pkt)
+		sport, dport := getPacketUDPPorts(pkt)
 		if dport == 53 {
 			//                   fw.dns.processDNS(pkt)
 			return true
+		} else {
+			if sport == 53 {
+		//		fw.dns.processDNS(pkt)
+				return true
+			}
 		}
 	}
 	if pkt.Packet.Layer(layers.LayerTypeICMPv4) != nil && srcip.Equal(dstip) {

sgfw/prompt.go

@@ -150,6 +150,7 @@ var PC2FDMapLock = &sync.Mutex{}
 func monitorPromptFDs(pc pendingConnection) {
 	guid := pc.getGUID()
 	pid := pc.procInfo().Pid
+	//leaderpid := pc.procInfo().LeaderPid
 	inode := pc.procInfo().Inode
 	fd := pc.procInfo().FD
 	prompter := pc.getPrompter()
@@ -157,17 +158,21 @@ func monitorPromptFDs(pc pendingConnection) {
 	//fmt.Printf("ADD TO MONITOR: %v | %v / %v / %v\n", pc.policy().application, guid, pid, fd)
 
 	if pid == -1 || fd == -1 || prompter == nil {
-		log.Warning("Unexpected error condition occurred while adding socket fd to monitor: %d %d %v",pid, fd, prompter)
+		log.Warningf("Unexpected error condition occurred while adding socket fd to monitor: %d %d %v",pid, fd, prompter)
 		return
-	} else
+	} else {
-	{
 		log.Warning("No unexpected errors");
 	}
 
 	PC2FDMapLock.Lock()
 	defer PC2FDMapLock.Unlock()
-
+	var fdpath string
-	fdpath := fmt.Sprintf("/proc/%d/fd/%d", pid, fd)
+//	log.Warning("leaderpid:",pc.procInfo().LeaderPid) 
+	//if pc.procInfo().LeaderPid != "" {
+//		fdpath = fmt.Sprintf("/proc/%s/root/%d/fd/%d", leaderpid, pid, fd)
+//	} else {
+		fdpath = fmt.Sprintf("/proc/%d/fd/%d", pid, fd)
+//	}
 	PC2FDMap[guid] = PC2FDMapping{guid: guid, inode: inode, fd: fd, fdpath: fdpath, prompter: prompter}
 	return
 }

sgfw/sgfw.go

@@ -123,8 +123,9 @@ func (fw *Firewall) runFilter() {
 					p.Packet = ip6p
 
 				}
-
+				var pkt nfqueue.NFQPacket
-				fw.filterPacket(p, timestamp)
+				pkt = *p
+				go fw.filterPacket(&pkt, timestamp)
 			} else {
 				p.Accept()
 			}

sgfw/snitch-ext.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"bufio"
 	"strconv"
+	"net"
 	"github.com/godbus/dbus"
 )
 
@@ -16,7 +17,7 @@ type ListSandboxesMsg struct {
 
 type SandboxInfo struct {
 	Id      int
-	Address string
+	Address net.IP
 	Name    string
 	Profile string
 	Mounts  []string
@@ -53,8 +54,8 @@ func getSandboxes() ([]SandboxInfo, error) {
 		s := strings.Split(scanner.Text(), ":")
 		obj.Call("com.subgraph.realms.Manager.LeaderPidFromIP", 0, s[1]).Store(&leaderpid)
 		p, _ := strconv.Atoi(leaderpid)
-		sboxes = append(sboxes,SandboxInfo{Id: i, Name: s[0], Address: s[1], InitPid: p})
+		sboxes = append(sboxes,SandboxInfo{Id: i, Name: s[0], Address: net.ParseIP(s[1]), InitPid: p})
-		fmt.Print(s[0], s[1], leaderpid)
+		log.Warningf("Found realm, name=%v ip=%v leader pid=%v ", s[0], s[1], leaderpid)
 		i++;
 	}
 

vendor/github.com/subgraph/go-procsnitch/proc_pid.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"sync"
 	"syscall"
-	"github.com/godbus/dbus"
+	//"github.com/godbus/dbus"
 )
 
 // Info is a struct containing the result of a socket proc query
@@ -25,7 +25,8 @@ type Info struct {
 	ParentCmdLine string
 	ParentExePath string
 	Realm         string
-	Sandbox         string
+	Sandbox       string
+	LeaderPid     string
 	Inode         uint64
 	FD            int
 }
@@ -139,13 +140,24 @@ func (pi *Info) loadProcessInfo() bool {
 	if pi.loaded {
 		return true
 	}
-
+	leaderpid := ""
-	exePath, err := os.Readlink(fmt.Sprintf("/proc/%d/exe", pi.Pid))
+	realm := "unknown"
+	//conn, _ := dbus.SystemBus()
+	//obj := conn.Object("com.subgraph.realms", "/")
+	//obj.Call("com.subgraph.realms.Manager.RealmFromContainerPid", 0, fmt.Sprintf("%d",pi.Pid)).Store(&realm)
+	//obj.Call("com.subgraph.realms.Manager.LeaderPidFromRealm", 0, realm).Store(&leaderpid)
+	pi.LeaderPid = leaderpid
+	prefix := ""
+	if leaderpid != "" {
+		prefix = fmt.Sprintf("/proc/%s/root",leaderpid)
+	}
+	prefix = "" 
+	exePath, err := os.Readlink(fmt.Sprintf("%s/proc/%d/exe", prefix, pi.Pid))
 	if err != nil {
 		log.Warningf("Error reading exe link for pid %d: %v", pi.Pid, err)
 		return false
 	}
-	bcs, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/cmdline", pi.Pid))
+	bcs, err := ioutil.ReadFile(fmt.Sprintf("%s/proc/%d/cmdline", prefix, pi.Pid))
 	if err != nil {
 		log.Warningf("Error reading cmdline for pid %d: %v", pi.Pid, err)
 		return false
@@ -156,7 +168,7 @@ func (pi *Info) loadProcessInfo() bool {
 		}
 	}
 
-	bs, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/stat", pi.Pid))
+	bs, err := ioutil.ReadFile(fmt.Sprintf("%s/proc/%d/stat", prefix, pi.Pid))
 	if err != nil {
 		log.Warningf("Error reading cmdline for pid %d: %v", pi.Pid, err)
 		return false
@@ -168,12 +180,12 @@ func (pi *Info) loadProcessInfo() bool {
 	}
 	ppid := toPid(fs[3])
 
-	pexePath, err := os.Readlink(fmt.Sprintf("/proc/%d/exe", ppid))
+	pexePath, err := os.Readlink(fmt.Sprintf("%s/proc/%d/exe", prefix, ppid))
 	if err != nil {
 		log.Warningf("Error reading exe link for parent pid %d: %v", ppid, err)
 		return false
 	}
-	pbs, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/cmdline", ppid))
+	pbs, err := ioutil.ReadFile(fmt.Sprintf("%s/proc/%d/cmdline", prefix, ppid))
 	if err != nil {
 		log.Warningf("Error reading cmdline for parent pid %d: %v", ppid, err)
 		return false
@@ -184,14 +196,9 @@ func (pi *Info) loadProcessInfo() bool {
 		}
 	}
 
-	conn, _ := dbus.SystemBus()
-	obj := conn.Object("com.subgraph.realms", "/")
-	realm := "unknown"
-	//leaderpid := ""
-
-	obj.Call("com.subgraph.realms.Manager.RealmFromContainerPid", 0, fmt.Sprintf("%d",pi.Pid)).Store(&realm)
 
-	finfo, err := os.Stat(fmt.Sprintf("/proc/%d", pi.Pid))
+		
+	finfo, err := os.Stat(fmt.Sprintf("%s/proc/%d", prefix, pi.Pid))
 	if err != nil {
 		log.Warningf("Could not stat /proc/%d: %v", pi.Pid, err)
 		return false
@@ -205,7 +212,7 @@ func (pi *Info) loadProcessInfo() bool {
 	pi.ExePath = exePath
 	pi.Realm = realm
 	pi.Sandbox = realm
-	//pi.Leaderpid = leaderpid
+	pi.LeaderPid = leaderpid
 	pi.CmdLine = string(bcs)
 	pi.loaded = true
 	return true

vendor/github.com/subgraph/go-procsnitch/socket.go

@@ -254,6 +254,10 @@ func findTCPSocketAll(srcAddr net.IP, srcPort uint16, dstAddr net.IP, dstPort ui
 
 func f2(srcPort uint16, dstAddr net.IP, dstPort uint16, custdata[]string) *socketStatus {
 	proto := "tcp"
+/*	if dstAddr.To4() == nil {
+		proto += "6"
+	}
+*/	
 	return findSocketCustom(proto, custdata, func(ss socketStatus) bool {
 		return ss.remote.port == dstPort && ss.remote.ip.Equal(dstAddr) && ss.local.port == srcPort
 	})