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ntop.c
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/*
* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
* http://www.ntop.org
*
* Copyright (C) 1998-2012 Luca Deri <[email protected]>
*
* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "ntop.h"
static int *servicesMapper = NULL; /* temporary value */
/* *************************** */
static void printMutexInfo(PthreadMutex *mutexId, char *mutexName) {
#ifdef MUTEX_DEBUG
traceEvent(CONST_TRACE_INFO, "%s is %s (last lock %s:%d) [max lock time %s:%d (%.6f sec)]",
mutexName,
mutexId->isLocked ? "*locked*" : "unlocked",
mutexId->lock.file, mutexId->lock.line,
mutexId->max.file,
mutexId->max.line,
mutexId->maxLockedDuration);
#endif
}
/* *************************** */
#ifndef WIN32
void handleSigHup(int signalId _UNUSED_) {
int i;
printMutexInfo(&myGlobals.gdbmMutex, "myGlobals.gdbmMutex");
for(i=0; i<myGlobals.numDevices; i++) {
char tmp[64];
safe_snprintf(__FILE__, __LINE__, tmp, sizeof(tmp), "myGlobals.packetProcessMutex[%s]",
myGlobals.device[i].name);
printMutexInfo(&myGlobals.device[i].packetProcessMutex, tmp);
safe_snprintf(__FILE__, __LINE__, tmp, sizeof(tmp), "myGlobals.packetQueueMutex[%s]",
myGlobals.device[i].name);
printMutexInfo(&myGlobals.device[i].packetQueueMutex, tmp);
}
if(myGlobals.runningPref.numericFlag != noDnsResolution)
printMutexInfo(&myGlobals.addressResolutionMutex, "myGlobals.addressResolutionMutex");
handleKnownAddresses(myGlobals.runningPref.knownSubnets);
(void)signal(SIGHUP, handleSigHup);
}
#endif /* WIN32 */
/* *************************** */
void* pcapDispatch(void *_i) {
int rc;
int i = (int)((long)_i);
struct pcap_stat pcapStats;
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: NPS(%s): pcapDispatch thread starting [p%d]",
(long unsigned int)pthread_self(), myGlobals.device[i].humanFriendlyName, getpid());
/* Reset stats before to start (needed by modern libpcap versions) */
if(myGlobals.pcap_file_list == NULL) {
pcap_stats(myGlobals.device[i].pcapPtr, &pcapStats);
myGlobals.device[i].initialPcapDroppedPkts.value = pcapStats.ps_drop;
}
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: NPS(%s): pcapDispatch thread running [p%d]",
(long unsigned int)pthread_self(), myGlobals.device[i].humanFriendlyName, getpid());
for(;myGlobals.ntopRunState <= FLAG_NTOPSTATE_RUN;) {
rc = pcap_dispatch(myGlobals.device[i].pcapPtr, -1, queuePacket, (u_char*)_i);
if(myGlobals.ntopRunState > FLAG_NTOPSTATE_RUN) break;
if(rc == -1) {
if(myGlobals.device[i].name != NULL) { /* This is not a shutdown */
char *emsg = pcap_geterr(myGlobals.device[i].pcapPtr);
traceEvent(CONST_TRACE_ERROR, "Reading packets on device %d (%s): '%s'",
i, myGlobals.device[i].humanFriendlyName, emsg);
/*
Ugly way to check for EAGAIN since the errno itself is not avail
Courtesy of Andreas Stolcke <[email protected]>
*/
if(strcmp(emsg, strerror(EAGAIN)) == 0) {
sleep(1);
} else {
break;
}
}
} else if(rc == 0) {
if(myGlobals.pcap_file_list != NULL) {
traceEvent(CONST_TRACE_INFO, "pcap_loop (%s) returned %d [No more packets to read]",
myGlobals.device[i].humanFriendlyName, rc);
if(myGlobals.pcap_file_list->next != NULL) {
struct fileList *fl = myGlobals.pcap_file_list;
myGlobals.pcap_file_list = myGlobals.pcap_file_list->next;
free(fl->fileName); free(fl);
if(myGlobals.pcap_file_list != NULL) {
if(myGlobals.device[i].pcapPtr) pcap_close(myGlobals.device[i].pcapPtr);
myGlobals.device[i].pcapPtr = myGlobals.pcap_file_list->pcapPtr;
if(myGlobals.device[i].humanFriendlyName != NULL) free(myGlobals.device[i].humanFriendlyName);
myGlobals.device[i].humanFriendlyName = strdup(myGlobals.pcap_file_list->fileName);
calculateUniqueInterfaceName(0);
traceEvent(CONST_TRACE_INFO, "pcap_loop (%s) : reading packets from file %s",
myGlobals.device[i].humanFriendlyName, myGlobals.pcap_file_list->fileName);
myGlobals.device[i].datalink = pcap_datalink(myGlobals.device[i].pcapPtr);
} else
break; /* No more packets to read */
} else
break; /* No more packets to read */
}
}
}
myGlobals.device[i].pcapDispatchThreadId = 0;
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: NPS(%s): pcapDispatch thread terminated [p%d]",
(long unsigned int)pthread_self(), myGlobals.device[i].humanFriendlyName, getpid());
return(NULL);
}
/* **************************************** */
#ifndef WIN32
RETSIGTYPE handleDiedChild(int sig _UNUSED_) {
int status;
pid_t pidId;
while((pidId = waitpid(-1, &status, WNOHANG)) > 0) {
#ifdef DEBUG
if(status == 0) {
myGlobals.numChildren--;
traceEvent(CONST_TRACE_INFO,
"A child has terminated [pid=%d status=%d children=%d]",
pidId, status, myGlobals.numChildren);
}
#endif
}
signal(SIGCHLD, handleDiedChild);
}
#endif
/* **************************************** */
void daemonizeUnderUnix(void) {
#ifndef WIN32
int childpid;
signal(SIGHUP, SIG_IGN);
#ifdef HANDLE_DIED_CHILD
signal(SIGCHLD, handleDiedChild);
#else
signal(SIGCHLD, SIG_IGN);
#endif
signal(SIGQUIT, SIG_IGN);
if((childpid=fork()) < 0)
traceEvent(CONST_TRACE_ERROR, "INIT: Occurred while daemonizing (errno=%d)", errno);
else {
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "DEBUG: after fork() in %s (%d)",
childpid ? "parent" : "child", childpid);
#endif
if(!childpid) { /* child */
traceEvent(CONST_TRACE_INFO, "INIT: Bye bye: I'm becoming a daemon...");
detachFromTerminalUnderUnix(1);
} else { /* father */
traceEvent(CONST_TRACE_INFO, "INIT: Parent process is exiting (this is normal)");
exit(0);
}
}
myGlobals.mainThreadId = pthread_self();
traceEvent(CONST_TRACE_ALWAYSDISPLAY, "THREADMGMT[t%lu]: Now running as a daemon",
(long unsigned int)myGlobals.mainThreadId);
#endif
}
/* **************************************** */
void detachFromTerminalUnderUnix(int doChdir /* if doChdir=1 ntop becomes a daemon */) {
#ifndef WIN32
#ifdef MAKE_WITH_SYSLOG
/* Child processes must log to syslog.
* If no facility was set through -L | --use-syslog=facility
* then force the default
*/
if(myGlobals.runningPref.useSyslog == FLAG_SYSLOG_NONE)
myGlobals.runningPref.useSyslog = DEFAULT_SYSLOG_FACILITY;
#endif /* MAKE_WITH_SYSLOG */
if(doChdir) {
int ret = chdir("/");
if(ret != 0)
traceEvent(CONST_TRACE_WARNING, "Chdir(/) failed");
}
setsid(); /* detach from the terminal */
if(doChdir) {
/* Don't close streams as python libs might get confused */
fclose(stdin);
fclose(stdout);
fclose(stderr);
}
/*
* clear any inherited file mode creation mask
*/
umask(0);
/*
* Use line buffered stdout
*/
/* setlinebuf (stdout); */
#if SETVBUF_REVERSED
setvbuf(stdout, _IOLBF, (char *)NULL, 0);
#else
setvbuf(stdout, (char *)NULL, _IOLBF, 0);
#endif
#endif /* WIN32 */
}
/* **************************************** */
static short handleProtocol(char* protoName, char *protocol) {
int i, idx, lowProtoPort, highProtoPort;
short printWarnings = 0;
u_char dummyEntry = 0;
if(protocol[0] == '\0')
return(-1);
else if(isdigit(protocol[0]) || (protocol[0] == '-')) {
/* numeric protocol port handling */
lowProtoPort = highProtoPort = 0;
sscanf(protocol, "%d-%d", &lowProtoPort, &highProtoPort);
if(highProtoPort < lowProtoPort)
highProtoPort = lowProtoPort;
if(lowProtoPort < 0) { lowProtoPort = 0; dummyEntry = 1; /* Dummy entry */ }
if(highProtoPort >= MAX_IP_PORT) highProtoPort = MAX_IP_PORT-1;
for(idx=lowProtoPort; idx<= highProtoPort; idx++) {
if(servicesMapper[idx] == -1) {
myGlobals.ipPortMapper.numElements++;
#ifdef DEBUG
printf("[%d] '%s' [port=%d]\n", myGlobals.numIpProtosToMonitor, protoName, idx);
#endif
if(dummyEntry)
servicesMapper[idx] = -myGlobals.numIpProtosToMonitor;
else
servicesMapper[idx] = myGlobals.numIpProtosToMonitor;
} else if(printWarnings)
traceEvent(CONST_TRACE_WARNING,
"INIT: IP port %d (%s) has been discarded (multiple instances)",
idx,
protoName);
}
return(idx);
}
for(i=1; i<myGlobals.numActServices; i++) {
idx = -1;
if((myGlobals.udpSvc[i] != NULL) && (strcmp(myGlobals.udpSvc[i]->name, protocol) == 0))
idx = myGlobals.udpSvc[i]->port;
else if((myGlobals.tcpSvc[i] != NULL) && (strcmp(myGlobals.tcpSvc[i]->name, protocol) == 0))
idx = myGlobals.tcpSvc[i]->port;
if(idx != -1) {
if(servicesMapper[idx] == -1) {
myGlobals.ipPortMapper.numElements++;
#ifdef DEBUG
printf("[%d] '%s' [%s:%d]\n", myGlobals.numIpProtosToMonitor, protoName, protocol, idx);
#endif
servicesMapper[idx] = myGlobals.numIpProtosToMonitor;
} else if(printWarnings)
traceEvent(CONST_TRACE_WARNING, "INIT: Protocol '%s' has been discarded (multiple instances)",
protocol);
return(idx);
}
}
if(printWarnings)
traceEvent(CONST_TRACE_WARNING, "INIT: Unknown protocol '%s' - it has been ignored",
protocol);
return(-1);
}
/* **************************************** */
static int handleProtocolList(char* protoName, char *protocolList) {
char tmpStr[255];
char* lastEntry, *protoEntry;
int increment=0, rc=0;
if(servicesMapper == NULL) {
servicesMapper = (int*)malloc(sizeof(int)*MAX_IP_PORT);
memset(servicesMapper, -1, sizeof(int)*MAX_IP_PORT);
}
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "%s - %s", protoName, protocolList);
#endif
/* The trick below is used to avoid to modify static
memory like in the case where this function is
called by addDefaultProtocols()
*/
lastEntry = strncpy(tmpStr, protocolList, sizeof(tmpStr));
while((protoEntry = strchr(lastEntry, '|')) != NULL) {
protoEntry[0] = '\0';
rc = handleProtocol(protoName, lastEntry);
if(rc != -1)
increment = 1;
lastEntry = &protoEntry[1];
}
if(increment == 1) {
if(myGlobals.numIpProtosToMonitor == 0)
myGlobals.ipTrafficProtosNames = (char**)malloc(sizeof(char*));
else
myGlobals.ipTrafficProtosNames = (char**)realloc(myGlobals.ipTrafficProtosNames,
(int)(sizeof(char*)*(myGlobals.numIpProtosToMonitor+1)));
rc = myGlobals.numIpProtosToMonitor;
myGlobals.ipTrafficProtosNames[myGlobals.numIpProtosToMonitor] = strdup(protoName);
myGlobals.numIpProtosToMonitor++;
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "%d) %s - %s",
myGlobals.numIpProtosToMonitor, protoName, protocolList);
#endif
}
myGlobals.l7.numSupportedProtocols = IPOQUE_MAX_SUPPORTED_PROTOCOLS + myGlobals.numIpProtosToMonitor;
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "handleProtocolList(%s) = %d", protoName, rc);
#endif
return(rc);
}
/* **************************************** */
void addNewIpProtocolToHandle(char* name, u_int16_t id, u_int16_t idAlias) {
ProtocolsList *proto = myGlobals.ipProtosList;
int i;
while(proto != NULL) {
if(proto->protocolId == id) return; /* Already there */
proto = proto->next;
}
proto = calloc(1, sizeof(ProtocolsList));
proto->next = myGlobals.ipProtosList;
proto->protocolName = strdup(name);
proto->protocolId = id, proto->protocolIdAlias = idAlias;
myGlobals.ipProtosList = proto;
myGlobals.numIpProtosList++;
for(i=0; i<myGlobals.numDevices; i++)
createDeviceIpProtosList(i);
}
/* **************************************** */
void createPortHash(void) {
int theSize, i;
/*
At this point in time servicesMapper contains all
the port data hence we can transform it from
an array to a hash table.
*/
myGlobals.ipPortMapper.numSlots = 2*myGlobals.ipPortMapper.numElements;
theSize = (int)(sizeof(PortProtoMapper)*2*myGlobals.ipPortMapper.numSlots);
myGlobals.ipPortMapper.theMapper = (PortProtoMapper*)malloc(theSize);
memset(myGlobals.ipPortMapper.theMapper, 0, theSize);
for(i=0; i<myGlobals.ipPortMapper.numSlots; i++) myGlobals.ipPortMapper.theMapper[i].portProto = -1;
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "Allocating %d slots", myGlobals.ipPortMapper.numSlots);
#endif
for(i=0; i<MAX_IP_PORT; i++) {
if(servicesMapper[i] != -1) {
int slotId = (3*i) % myGlobals.ipPortMapper.numSlots;
while(myGlobals.ipPortMapper.theMapper[slotId].portProto != -1)
slotId = (slotId+1) % myGlobals.ipPortMapper.numSlots;
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "Mapping port %d to slotId %d", i, slotId);
#endif
if(servicesMapper[i] < 0) {
servicesMapper[i] = -servicesMapper[i];
myGlobals.ipPortMapper.theMapper[slotId].dummyEntry = 1;
} else
myGlobals.ipPortMapper.theMapper[slotId].dummyEntry = 0;
myGlobals.ipPortMapper.theMapper[slotId].portProto = i;
myGlobals.ipPortMapper.theMapper[slotId].mappedPortProto = servicesMapper[i];
}
}
free(servicesMapper);
}
/* **************************************** */
void handleProtocols(void) {
char *proto, *buffer=NULL, *strtokState = NULL,
*bufferCurrent, *bufferWork, tmpStr[512];
FILE *fd;
/* myGlobals.protoSpecs is either
1) a list in the form proto=port[|port][,...]
2) the name of a file containing a list in the same format.
Modification: Allow the file to have multiple lines, each in
the "standard" format.
Also, ignore standard Linux comments...
*/
if((!myGlobals.runningPref.protoSpecs)
|| (!myGlobals.runningPref.protoSpecs[0]))
return;
safe_snprintf(__FILE__, __LINE__, tmpStr, sizeof(tmpStr),
"%s", myGlobals.runningPref.protoSpecs);
revertSlashIfWIN32(tmpStr, 0);
fd = fopen(tmpStr, "rb");
if(fd == NULL) {
traceEvent(CONST_TRACE_INFO, "PROTO_INIT: Processing protocol list: '%s'", tmpStr);
proto = strtok_r(tmpStr, ",", &strtokState);
} else {
struct stat buf;
if(stat(tmpStr, &buf) != 0) {
fclose(fd);
traceEvent(CONST_TRACE_ERROR, "PROTO_INIT: Unable to get information about file '%s'",
tmpStr);
return;
}
bufferCurrent = buffer = (char*)malloc(buf.st_size+8) /* just to be safe */;
traceEvent(CONST_TRACE_ALWAYSDISPLAY, "PROTO_INIT: Processing protocol file: '%s', size: %ld",
tmpStr, (long)(buf.st_size+8));
for (;;) {
bufferCurrent = fgets(bufferCurrent, (int)buf.st_size, fd);
/* On EOF, we're finished */
if(bufferCurrent == NULL) {
break;
}
/* otherwise, bufferCurrent points to the just read line in the file,
of the form:
[protocol=protocol[|protocol][,]] [# comment]
*/
/* Strip out any comments */
bufferWork = strchr(bufferCurrent, '#');
if(bufferWork != NULL) {
bufferWork[0] = '\n';
bufferWork[1] = '\0';
}
/*
Replace the \n by a comma, so at the end the buffer will
look indistinguishable from a single line file...
*/
bufferWork = strchr(bufferCurrent, '\n');
if(bufferWork != NULL) {
bufferWork[0] = ',';
bufferWork[1] = '\0';
}
bufferWork = strchr(bufferCurrent, '\r');
if(bufferWork != NULL) {
bufferWork[0] = ',';
bufferWork[1] = '\0';
}
/* Move pointer to end-of-string for read of next line */
bufferCurrent = strchr(bufferCurrent, '\0');
}
fclose(fd);
/* remove trailing carriage return */
if(buffer[strlen(buffer)-1] == '\n')
buffer[strlen(buffer)-1] = 0;
proto = strtok_r(buffer, ",", &strtokState);
}
while(proto != NULL) {
char* protoName;
int len, i, ignore_protocol;
ignore_protocol = 0;
len = (int)strlen(proto);
for(i=0; i<len; i++) {
if(iscntrl(proto[i]) || (!isascii(proto[i]))) {
ignore_protocol = 1;
}
}
if(!ignore_protocol) {
char protoStr[256] = { '\0' };
protoName = strchr(proto, '=');
if(protoName == NULL)
traceEvent(CONST_TRACE_INFO,
"PROTO_INIT: Unknown protocol '%s'. It has been ignored",
proto);
else {
protoName[0] = '\0';
strncpy(protoStr, &protoName[1], sizeof(protoStr));
len = (int)strlen(protoStr);
if(protoStr[len-1] != '|') {
/* Make sure that the string ends with '|' */
protoStr[len] = '|';
protoStr[len+1] = '\0';
}
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, " %30s %s", proto, protoStr);
#endif
handleProtocolList(proto, protoStr);
}
}
proto = strtok_r(NULL, ",", &strtokState);
}
if(buffer != NULL)
free(buffer);
}
/* **************************************** */
void addDefaultProtocols(void) {
handleProtocolList("DNS", "name|domain|");
handleProtocolList("NetBios", "netbios-ns|netbios-dgm|netbios-ssn|445|");
handleProtocolList("Mail", "pop-2|pop-3|pop3|kpop|smtp|imap|imap2|585|993|995|");
handleProtocolList("DHCP", "67-68|"); /* Bootp */
handleProtocolList("SNMP", "snmp|snmp-trap|");
handleProtocolList("NNTP", "nntp|");
handleProtocolList("NFS/AFS", "mount|pcnfs|bwnfs|nfsd|nfs|nfsd-status|7000-7009");
handleProtocolList("X11", "6000-6010|");
}
/* **************************************** */
/* Maps a given port to an id that represents the known protocol myGlobals.ipTrafficProtosNames[ID] */
int mapGlobalToLocalIdx(int port) {
if((port < 0) || (port >= MAX_IP_PORT))
return(-1);
else {
int j, found, slotId = (3*port) % myGlobals.ipPortMapper.numSlots;
for(j=0, found=0; j<myGlobals.ipPortMapper.numSlots; j++) {
if(myGlobals.ipPortMapper.theMapper[slotId].dummyEntry == 0) {
if(myGlobals.ipPortMapper.theMapper[slotId].portProto == -1)
break;
else if(myGlobals.ipPortMapper.theMapper[slotId].portProto == port) {
found = 1;
break;
}
}
slotId = (slotId+1) % myGlobals.ipPortMapper.numSlots;
}
if(found)
return(myGlobals.ipPortMapper.theMapper[slotId].mappedPortProto);
else
return(-1);
}
}
/* **************************************** */
static void purgeIpPorts(int theDevice) {
int i;
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "Calling purgeIpPorts(%d)", theDevice);
#endif
if(myGlobals.device[theDevice].numHosts == 0) return;
if(myGlobals.device[theDevice].ipPorts == NULL) return;
accessMutex(&myGlobals.purgePortsMutex, "purgeIpPorts");
for(i=1; i<MAX_IP_PORT; i++) {
if(myGlobals.device[theDevice].ipPorts[i] != NULL) {
free(myGlobals.device[theDevice].ipPorts[i]);
myGlobals.device[theDevice].ipPorts[i] = NULL;
}
}
releaseMutex(&myGlobals.purgePortsMutex);
#ifdef DEBUG
traceEvent(CONST_TRACE_INFO, "purgeIpPorts(%d) completed", theDevice);
#endif
}
/* **************************************** */
void* scanIdleLoop(void* notUsed _UNUSED_) {
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SIH: Idle host scan thread starting [p%d]",
(long unsigned int)pthread_self(), getpid());
ntopSleepUntilStateRUN();
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SIH: Idle host scan thread running [p%d]",
(long unsigned int)pthread_self(), getpid());
for(;;) {
int i, purged=0;
ntopSleepWhileSameState(60 /* do not change */);
if(myGlobals.ntopRunState > FLAG_NTOPSTATE_RUN) break;
if(myGlobals.pcap_file_list == NULL)
myGlobals.actTime = time(NULL);
for(i=0; i<myGlobals.numDevices; i++)
if(!myGlobals.device[i].virtualDevice) {
if((!myGlobals.runningPref.stickyHosts)
&& (!myGlobals.pcap_file_list))
purged += purgeIdleHosts(i);
#if !defined(__FreeBSD__)
purgeIpPorts(i);
#endif
ntop_conditional_sched_yield(); /* Allow other threads to run */
}
updateThpt(1);
}
myGlobals.scanIdleThreadId = 0;
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SIH: Idle host scan thread terminated [p%d]",
(long unsigned int)pthread_self(), getpid());
return(NULL);
}
/* **************************************** */
void* scanFingerprintLoop(void* notUsed _UNUSED_) {
HostTraffic *el;
int deviceId, countScan, countResolved, countCycle;
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SFP: Fingerprint scan thread starting [p%d]",
(long unsigned int)pthread_self(), getpid());
countCycle=0;
ntopSleepUntilStateRUN();
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SFP: Fingerprint scan thread running [p%d]",
(long unsigned int)pthread_self(), getpid());
for(;;) {
countScan=0;
countResolved=0;
myGlobals.nextFingerprintScan = time(NULL) + CONST_FINGERPRINT_LOOP_INTERVAL;
ntopSleepWhileSameState(CONST_FINGERPRINT_LOOP_INTERVAL);
if(myGlobals.ntopRunState > FLAG_NTOPSTATE_RUN) break;
if(myGlobals.pcap_file_list == NULL)
myGlobals.actTime = time(NULL);
countCycle++;
#ifdef FINGERPRINT_DEBUG
traceEvent(CONST_TRACE_NOISY, "FINGERPRINT_DEBUG: starting cycle %d", countCycle);
#endif
for(deviceId=0; deviceId<myGlobals.numDevices; deviceId++) {
for(el=getFirstHost(deviceId); el != NULL; el = getNextHost(deviceId, el)) {
if(el->fingerprint == NULL) continue;
if(el->fingerprint[0] == ':') continue;
if(addrnull(&el->hostIpAddress)) continue;
if(el->hostNumIpAddress[0] == '\0') continue;
countScan++;
setHostFingerprint(el);
if((el->fingerprint[0] == ':') && (el->fingerprint[0] != '\0')) countResolved++;
}
ntop_conditional_sched_yield(); /* Allow other threads to run */
}
if(countScan > 0)
traceEvent(CONST_TRACE_NOISY, "SFP: Ending fingerprint scan cycle %d - checked %d, resolved %d",
countCycle, countScan, countResolved);
}
myGlobals.nextFingerprintScan = 0;
myGlobals.scanFingerprintsThreadId = 0;
traceEvent(CONST_TRACE_INFO, "THREADMGMT[t%lu]: SFP: Fingerprint scan thread terminated [p%d]",
(long unsigned int)pthread_self(), getpid());
return(NULL);
}
/* **************************************** */
static void cleanupThreadIs(char *buf, int sizeofbuf) {
int i;
buf[0]='\0';
if(buf[0] != '\0') {
if(pthread_self() == myGlobals.mainThreadId)
strncpy(buf, "MAIN", sizeofbuf);
else if(pthread_self() == myGlobals.scanFingerprintsThreadId)
strncpy(buf, "SFP", sizeofbuf);
else if(pthread_self() == myGlobals.scanIdleThreadId)
strncpy(buf, "SIH", sizeofbuf);
else if(pthread_self() == myGlobals.handleWebConnectionsThreadId)
strncpy(buf, "WEB", sizeofbuf);
}
if(buf[0] == '\0') {
for(i=0; i<myGlobals.numDevices; i++) {
if(pthread_self() == myGlobals.device[i].pcapDispatchThreadId) {
safe_snprintf(__FILE__, __LINE__, buf, sizeofbuf, "NPS%d", i+1);
break;
}
}
}
if(buf[0] == '\0') {
for(i=0; i<myGlobals.numDevices; i++) {
if(pthread_self() == myGlobals.device[i].dequeuePacketThreadId) {
safe_snprintf(__FILE__, __LINE__, buf, sizeofbuf, "NPS(%s)",
myGlobals.device[i].humanFriendlyName);
break;
}
}
}
if(buf[0] == '\0') {
for(i=0; i<myGlobals.numDevices; i++) {
if((myGlobals.device[i].netflowGlobals != NULL) &&
(pthread_self() == myGlobals.device[i].netflowGlobals->netFlowThread)) {
safe_snprintf(__FILE__, __LINE__, buf, sizeofbuf, "NF(%s)",
myGlobals.device[i].humanFriendlyName);
break;
}
}
}
if(buf[0] == '\0') {
for(i=0; i<myGlobals.numDevices; i++) {
if((myGlobals.device[i].sflowGlobals != NULL) &&
(pthread_self() == myGlobals.device[i].sflowGlobals->sflowThread)) {
safe_snprintf(__FILE__, __LINE__, buf, sizeofbuf, "SF(%s)",
myGlobals.device[i].humanFriendlyName);
break;
}
}
}
if(buf[0] == '\0') {
strncpy(buf, "unknown", sizeofbuf);
}
}
/* *************************** */
void runningThreads(char *buf, int sizeofbuf, int do_join) {
char buf2[LEN_MEDIUM_WORK_BUFFER];
int i;
if(!do_join) {
memset(&buf2, 0, sizeof(buf2));
safe_snprintf(__FILE__, __LINE__, buf, sizeofbuf, "%s%s%s",
myGlobals.scanFingerprintsThreadId != 0 ? " SFP" : "",
myGlobals.scanIdleThreadId != 0 ? " SIH" : "",
myGlobals.handleWebConnectionsThreadId != 0 ? " WEB" : "");
}
for(i=0; i<myGlobals.numDequeueAddressThreads; i++) {
if(myGlobals.dequeueAddressThreadId[i] != 0) {
if(!do_join) {
safe_snprintf(__FILE__, __LINE__, buf2, sizeof(buf2), " DNSAR%d", i+1);
safe_strncat(buf, sizeofbuf, buf2);
} else {
/* Wake up thread */
traceEvent(CONST_TRACE_INFO, "Signaling thread DNSAR%d", i+1);
signalCondvar(&myGlobals.queueAddressCondvar, 1);
#if 0
traceEvent(CONST_TRACE_INFO, "Joining thread DNSAR%d", i+1);
if(joinThread(&myGlobals.dequeueAddressThreadId[i]) != 0)
traceEvent(CONST_TRACE_INFO, "joinThread() returned %s", strerror(errno));
#endif
}
}
}
if(myGlobals.allDevs != NULL) {
pcap_freealldevs(myGlobals.allDevs);
myGlobals.allDevs = NULL;
}
if(myGlobals.device != NULL) {
for(i=0; i<myGlobals.numDevices; i++) {
if((myGlobals.device[i].pcapDispatchThreadId != 0) &&
(!myGlobals.device[i].virtualDevice) &&
(!myGlobals.device[i].dummyDevice) &&
(myGlobals.device[i].pcapPtr != NULL)) {
if(!do_join) {
safe_snprintf(__FILE__, __LINE__, buf2, sizeof(buf2), " NPS(%s)",
myGlobals.device[i].humanFriendlyName);
safe_strncat(buf, sizeofbuf, buf2);
} else {
struct pcap_stat pcapStats;
if(pcap_stats(myGlobals.device[i].pcapPtr, &pcapStats) >= 0) {
traceEvent(CONST_TRACE_INFO, "STATS: %s packets received by filter on %s",
formatPkts((Counter)pcapStats.ps_recv, buf2, sizeof(buf2)), myGlobals.device[i].name);
traceEvent(CONST_TRACE_INFO, "STATS: %s packets dropped (according to libpcap)",
formatPkts((Counter)pcapStats.ps_drop, buf2, sizeof(buf2)));
}
traceEvent(CONST_TRACE_INFO, "STATS: %s packets dropped (by ntop)",
formatPkts(myGlobals.device[i].droppedPkts.value, buf2, sizeof(buf2)));
/* signalCondvar(&myGlobals.device[i].queueCondvar, 1); */
/* pcap_close(myGlobals.device[i].pcapPtr); */
traceEvent(CONST_TRACE_INFO, "Joining thread NPS(%s) [t%lu]",
myGlobals.device[i].humanFriendlyName,
(long)myGlobals.device[i].pcapDispatchThreadId);
if(joinThread(&myGlobals.device[i].pcapDispatchThreadId) != 0)
traceEvent(CONST_TRACE_INFO, "joinThread() returned: %s", strerror(errno));
}
}
}
for(i=0; i<myGlobals.numDevices; i++) {
if((myGlobals.device[i].netflowGlobals != NULL) &&
(myGlobals.device[i].netflowGlobals->netFlowThread != 0)) {
if(!do_join) {
safe_snprintf(__FILE__, __LINE__, buf2, sizeof(buf2), " NF%d", i);
safe_strncat(buf, sizeofbuf, buf2);
} else {
traceEvent(CONST_TRACE_INFO, "Joining thread NFt%lu [%u]",
(long unsigned int)myGlobals.device[i].netflowGlobals->netFlowThread, i);
close(myGlobals.device[i].netflowGlobals->netFlowInSocket);
if(joinThread(&myGlobals.device[i].netflowGlobals->netFlowThread) != 0)
traceEvent(CONST_TRACE_INFO, "joinThread() returned %s", strerror(errno));
}
}
}
for(i=0; i<myGlobals.numDevices; i++) {
if((myGlobals.device[i].sflowGlobals != NULL) &&
(myGlobals.device[i].sflowGlobals->sflowThread != 0)) {
if(!do_join) {
safe_snprintf(__FILE__, __LINE__, buf2, sizeof(buf2), " SF%d", i);
safe_strncat(buf, sizeofbuf, buf2);
} else {
traceEvent(CONST_TRACE_INFO, "Joining thread SF%d", i);
if(joinThread(&myGlobals.device[i].sflowGlobals->sflowThread) != 0)
traceEvent(CONST_TRACE_INFO, "joinThread() returned %s", strerror(errno));
}
}
}
for(i=0; i<myGlobals.numDevices; i++) {
if(myGlobals.device[i].dequeuePacketThreadId != 0) {
if(!do_join) {
safe_snprintf(__FILE__, __LINE__, buf2, sizeof(buf2), " NPA(%s)",
myGlobals.device[i].humanFriendlyName);
safe_strncat(buf, sizeofbuf, buf2);
} else {
traceEvent(CONST_TRACE_INFO, "Signaling thread NPA(%s)",
myGlobals.device[i].humanFriendlyName);
signalCondvar(&myGlobals.device[i].queueCondvar, 1);
/*
traceEvent(CONST_TRACE_INFO, "Joining thread NPA(%s)",
myGlobals.device[i].humanFriendlyName);
if(joinThread(&myGlobals.device[i].dequeuePacketThreadId) != 0)
traceEvent(CONST_TRACE_INFO, "joinThread() returned %s", strerror(errno));
else
traceEvent(CONST_TRACE_INFO, "Join completed succesfully");
*/
}
}
}
}
}
/* **************************************** */
/* Report statistics and write out the raw packet file */
RETSIGTYPE cleanup(int signo) {
int i, idx;
char buf[128];
static int cleanup_called = 0;
if(myGlobals.ntopRunState < FLAG_NTOPSTATE_RUN) {
cleanup_called = 1; /* Terminate immediately */
}
traceEvent(CONST_TRACE_INFO, "CLEANUP[t%lu]: ntop caught signal %d [state=%d]",
(long unsigned int)pthread_self(), signo, myGlobals.ntopRunState);
if(cleanup_called) {
traceEvent(CONST_TRACE_INFO, "ntop is now quitting...");
exit(0);
}
traceEvent(CONST_TRACE_INFO, "Active sessions=%u/Active hosts=%u",
myGlobals.device[myGlobals.actualReportDeviceId].numSessions,
myGlobals.device[myGlobals.actualReportDeviceId].hosts.hostsno);
#ifndef WIN32
signal(SIGALRM, cleanup);
alarm(20);
#endif
if(myGlobals.ntopRunState >= FLAG_NTOPSTATE_SHUTDOWN) {
return;
}
if(myGlobals.ntopRunState != FLAG_NTOPSTATE_SHUTDOWNREQ) {
/* TODO
* If the web server didn't start this, how do we kill it?
* It's sitting there in select() waiting for input!
*/
}
setRunState(FLAG_NTOPSTATE_SHUTDOWN);
if(cleanup_called) {
traceEvent(CONST_TRACE_INFO, "CLEANUP[t%lu]: exiting",