#!/usr/local/bin/perl
# Display syscalls made by this process in real time

require './proc-lib.pl';
&ReadParse();
if ($config{'trace_java'}) {
	&ui_print_header(undef, $text{'trace_title'}, "", "trace");
	}
else {
	&ui_print_unbuffered_header(undef, $text{'trace_title'}, "", "trace");
	}
%pinfo = &process_info($in{'pid'});
&can_edit_process($pinfo{'user'}) || &error($text{'edit_ecannot'});
if (!%pinfo) {
	print "<b>$text{'edit_gone'}</b> <p>\n";
	&ui_print_footer("", $text{'index_return'});
	exit;
	}

$syscalls = &ui_form_start("trace.cgi", "post")."\n".
	    &ui_hidden("pid", $in{'pid'})."\n".
	    "<b>$text{'trace_syscalls'}</b>\n".
	    &ui_radio("all", defined($in{'all'}) ? $in{'all'} : 1,
		      [ [ 1, $text{'trace_all'} ],
			[ 0, $text{'trace_sel'} ] ])."\n".
	    &ui_textbox("syscalls", $in{'syscalls'}, 40)."\n".
	    &ui_submit($text{'trace_change'})."\n".
	    &ui_form_end()."\n";

if ($config{'trace_java'}) {
	# Output Java applet to show trace
	print "<b>",&text('trace_doing', "<tt>$pinfo{'args'}</tt>"),"</b><br>\n";
	print $syscalls;
	print "<applet code=Tracer width=800 height=300>\n";
	&seed_random();
	$id = int(rand()*1000000000);
	print "<param name=url value='tail.cgi?pid=$in{'pid'}&id=$id&syscalls=",
	      $in{'all'} ? "" : &urlize($in{'syscalls'}),"'>\n";
	print "<param name=killurl value='killtail.cgi?id=$id'>\n";
	if ($main::session_id) {
		print "<param name=session value=\"sid=$main::session_id\">\n";
		}
	print "$text{'trace_sorry'}<p>\n";
	print "</applet>\n";
	}
else {
	# Just display here as text
	@syscalls = $in{'all'} ? ( ) : split(/\s+/, $in{'syscalls'});
	$trace = &open_process_trace($in{'pid'},
				     \@syscalls);
	$fmt = "%-8.8s %-11.11s %-80.80s %-10.10s";
	print "<b>",&text('trace_start', "<tt>$pinfo{'args'}</tt>"),"</b><br>\n";
	print $syscalls;
	print "<pre>";
	printf "$fmt\n", "Time", "System Call", "Parameters", "Return";
	printf "$fmt\n", ("-"x8), ("-"x11), ("-"x80), ("-"x10);
	while($action = &read_process_trace($trace)) {
		local $tm = strftime("%H:%M:%S", localtime($action->{'time'}));
		printf "$fmt\n", $tm, $action->{'call'},
				 join(", ", @{$action->{'args'}}),
				 $action->{'rv'};
		}
	print "</pre>";
	&close_process_trace($trace);
	if (!kill(0, $in{'pid'})) {
		print "<b>$text{'trace_done'}</b><br>\n";
		}
	else {
		print "<b>$text{'trace_failed'}</b><br>\n";
		}
	}

&ui_print_footer("edit_proc.cgi?$in{'pid'}", $text{'edit_return'},
		 "", $text{'index_return'});