o Nmap now reports scan start and end times for individual hosts

within a larger scan. The information is added to the XML host
  element like so: [host starttime="1198292349" endtime="1198292370"]
  (but of couse with angle brackets rather than square ones).  It is
  also printed in normal output if -d or "-v -v" are
  specified. [Brandon, Kris, Fyodor]

CHANGELOG

@@ -1,5 +1,12 @@
 # Nmap Changelog ($Id$); -*-text-*-
 
+o Nmap now reports scan start and end times for individual hosts
+  within a larger scan. The information is added to the XML host
+  element like so: [host starttime="1198292349" endtime="1198292370"]
+  (but of couse with angle brackets rather than square ones).  It is
+  also printed in normal output if -d or "-v -v" are
+  specified. [Brandon, Kris, Fyodor]
+
 o "make uninstall" now uninstalls Zenmap as well. The uninstall_zenmap
   script now deletes directories that were installed. [David]
 

Target.cc

@@ -139,6 +139,7 @@ void Target::Initialize() {
   MACaddress_set = SrcMACaddress_set = NextHopMACaddress_set = false;
   htn.msecs_used = 0;
   htn.toclock_running = false;
+  htn.host_start = htn.host_end = 0;
   interface_type = devt_other;
 	devname[0] = '\0';
 	devfullname[0] = '\0';
@@ -389,6 +390,7 @@ void Target::startTimeOutClock(const struct timeval *now) {
   htn.toclock_running = true;
   if (now) htn.toclock_start = *now;
   else gettimeofday(&htn.toclock_start, NULL);
+  if (!htn.host_start) htn.host_start = htn.toclock_start.tv_sec;
 }
   /* The complement to startTimeOutClock. */
 void Target::stopTimeOutClock(const struct timeval *now) {
@@ -398,6 +400,7 @@ void Target::stopTimeOutClock(const struct timeval *now) {
   if (now) tv = *now;
   else gettimeofday(&tv, NULL);
   htn.msecs_used += TIMEVAL_MSEC_SUBTRACT(tv, htn.toclock_start);
+  htn.host_end = tv.tv_sec;
 }
   /* Returns whether the host is timedout.  If the timeoutclock is
      running, counts elapsed time for that.  Pass NULL if you don't have the
@@ -473,3 +476,4 @@ void Target::osscanSetFlag(int flag) {
 		osscan_flag = flag;
 }
 
+

Target.h

@@ -126,6 +126,7 @@ struct host_timeout_nfo {
   unsigned long msecs_used; /* How many msecs has this Target used? */
   bool toclock_running; /* Is the clock running right now? */
   struct timeval toclock_start; /* When did the clock start? */
+  time_t host_start, host_end; /* The absolute start and end for this host */
 };
 
 class Target {
@@ -222,6 +223,9 @@ class Target {
      current time handy.  You might as well also pass NULL if the
      clock is not running, as the func won't need the time. */
   bool timedOut(const struct timeval *now);
+  /* Return time_t for the start and end time of this host */
+  time_t StartTime() { return htn.host_start; }
+  time_t EndTime() { return htn.host_end; }
 
   /* Takes a 6-byte MAC address */
   int setMACAddress(const u8 *addy);

docs/nmap.dtd

@@ -135,6 +135,10 @@
                           smurf | ports | os | distance | uptime | 
                           tcpsequence | ipidsequence | tcptssequence |
                           hostscript | trace)*, times ) >
+<!ATTLIST host
+			starttime	%attr_numeric;	#IMPLIED
+			endtime		%attr_numeric;	#IMPLIED
+>
 
 <!-- these elements are written by output.c:write_xml_initial_hostinfo() -->
 <!ELEMENT status	EMPTY >

nmap.cc

@@ -1765,7 +1765,9 @@ int nmap_main(int argc, char *argv[]) {
     for(targetno = 0; targetno < Targets.size(); targetno++) {
       currenths = Targets[targetno];
     /* Now I can do the output and such for each host */
-      log_write(LOG_XML, "<host>");
+      log_write(LOG_XML, "<host starttime=\"%lu\" endtime=\"%lu\">",
+		(unsigned long) currenths->StartTime(),
+		(unsigned long) currenths->EndTime());
       write_host_status(currenths, o.resolve_all);
       if (currenths->timedOut(NULL)) {
 	log_write(LOG_PLAIN,"Skipping host %s due to host timeout\n", 
@@ -2766,3 +2768,4 @@ int nmap_fetchfile(char *filename_returned, int bufferlen, const char *file) {
 
 }
 
+

output.cc

@@ -502,6 +502,19 @@ void printportoutput(Target *currenths, PortList *plist) {
     return;
   }
 
+  if (o.verbose > 1 || o.debugging) {
+    time_t tm_secs, tm_sece;
+    struct tm *tm;
+    char tbufs[128];
+    tm_secs = currenths->StartTime();    
+    tm_sece = currenths->EndTime();    
+    tm = localtime(&tm_secs);
+	if (strftime(tbufs, sizeof(tbufs), "%Y-%m-%d %H:%M:%S %Z", tm) <= 0)
+      fatal("Unable to properly format host start time");
+
+    log_write(LOG_PLAIN,"Scanned at %s for %lds\n",
+	      tbufs, tm_sece - tm_secs);
+  }
   log_write(LOG_PLAIN,"Interesting %s on %s:\n",
 	    (o.ipprotscan)? "protocols" : "ports", 
 	    currenths->NameIP(hostname, sizeof(hostname)));