runtests.pl

#!/usr/bin/env perl
#***************************************************************************
#                                  _   _ ____  _
#  Project                     ___| | | |  _ \| |
#                             / __| | | | |_) | |
#                            | (__| |_| |  _ <| |___
#                             \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# $Id$
###########################################################################
# These should be the only variables that might be needed to get edited:

use strict;
#use warnings;

@INC=(@INC, $ENV{'srcdir'}, ".");

require "getpart.pm"; # array functions

my $srcdir = $ENV{'srcdir'} || '.';
my $HOSTIP="127.0.0.1";
my $HOSTPORT=8999; # bad name, but this is the HTTP server port
my $HTTPSPORT=8433; # this is the HTTPS server port
my $FTPPORT=8921;  # this is the FTP server port
my $FTPSPORT=8821;  # this is the FTPS server port
my $CURL="../src/curl"; # what curl executable to run on the tests
my $DBGCURL=$CURL; #"../src/.libs/curl";  # alternative for debugging
my $LOGDIR="log";
my $TESTDIR="$srcdir/data";
my $LIBDIR="./libtest";
my $SERVERIN="$LOGDIR/server.input"; # what curl sent the server
my $CURLLOG="$LOGDIR/curl.log"; # all command lines run
my $FTPDCMD="$LOGDIR/ftpserver.cmd"; # copy ftp server instructions here

# Normally, all test cases should be run, but at times it is handy to
# simply run a particular one:
my $TESTCASES="all";

# To run specific test cases, set them like:
# $TESTCASES="1 2 3 7 8";

#######################################################################
# No variables below this point should need to be modified
#

my $HTTPPIDFILE=".http.pid";
my $HTTPSPIDFILE=".https.pid";
my $FTPPIDFILE=".ftp.pid";
my $FTPSPIDFILE=".ftps.pid";

# invoke perl like this:
my $perl="perl -I$srcdir";

# this gets set if curl is compiled with debugging:
my $curl_debug=0;

# name of the file that the memory debugging creates:
my $memdump="memdump";

# the path to the script that analyzes the memory debug output file:
my $memanalyze="./memanalyze.pl";

my $stunnel = checkcmd("stunnel");
my $valgrind = checkcmd("valgrind");

my $ssl_version; # set if libcurl is built with SSL support
my $large_file;  # set if libcurl is built with large file support

my $skipped=0;  # number of tests skipped; reported in main loop
my %skipped;    # skipped{reason}=counter, reasons for skip
my @teststat;   # teststat[testnum]=reason, reasons for skip

#######################################################################
# variables the command line options may set
#

my $short;
my $verbose;
my $debugprotocol;
my $anyway;
my $gdbthis;      # run test case with gdb debugger
my $keepoutfiles; # keep stdout and stderr files after tests
my $listonly;     # only list the tests

my $pwd;          # current working directory

my %run;	  # running server

# torture test variables
my $torture;
my $tortnum;
my $tortalloc;

chomp($pwd = `pwd`);

# enable memory debugging if curl is compiled with it
$ENV{'CURL_MEMDEBUG'} = 1;
$ENV{'HOME'}=$pwd;

##########################################################################
# Clear all possible '*_proxy' environment variables for various protocols
# to prevent them to interfere with our testing!

my $protocol;
foreach $protocol (('ftp', 'http', 'ftps', 'https', 'gopher', 'no')) {
    my $proxy = "${protocol}_proxy";
    # clear lowercase version
    $ENV{$proxy}=undef;
    # clear uppercase version
    $ENV{uc($proxy)}=undef;
}

#######################################################################
# Check for a command in the PATH.
#
sub checkcmd {
    my ($cmd)=@_;
    my @paths=("/usr/sbin", "/usr/local/sbin", "/sbin", "/usr/bin",
               "/usr/local/bin", split(":", $ENV{'PATH'}));
    for(@paths) {
        if( -x "$_/$cmd") {
            return "$_/$cmd";
        }
    }
}

#######################################################################
# Return the pid of the server as found in the given pid file
#
sub serverpid {
    my $PIDFILE = $_[0];
    open(PFILE, "<$PIDFILE");
    my $PID=0+<PFILE>;
    close(PFILE);
    return $PID;
}

#######################################################################
# Memory allocation test and failure torture testing.
#
sub torture {
    # start all test servers (http, https, ftp, ftps)
    &startservers(("http", "https", "ftp", "ftps"));
    my $c;

    my @test=('http://%HOSTIP:%HOSTPORT/1',
              'ftp://%HOSTIP:%FTPPORT/');
    
    # loop over the different tests commands
    for(@test) {
        my $cmdargs = "$_";

        $c++;

        if($tortnum && ($tortnum != $c)) {
            next;
        }
        print "We want test $c\n";

        my $redir=">log/torture.stdout 2>log/torture.stderr";

        subVariables(\$cmdargs);

        my $testcmd = "$CURL $cmdargs $redir";

        # First get URL from test server, ignore the output/result
        system($testcmd);

        # Set up gdb-stuff if desired
        if($gdbthis) {
            open(GDBCMD, ">log/gdbcmd");
            print GDBCMD "set args $cmdargs\n";
            print GDBCMD "show args\n";
            close(GDBCMD);
            $testcmd = "gdb $CURL -x log/gdbcmd";
        }

        print "Torture test $c:\n";
        print " CMD: $testcmd\n" if($verbose);
        
        # memanalyze -v is our friend, get the number of allocations made
        my $count;
        my @out = `$memanalyze -v $memdump`;
        for(@out) {
            if(/^Allocations: (\d+)/) {
                $count = $1;
                last;
            }
        }
        if(!$count) {
            # hm, no allocations in this fetch, ignore and get next
            print "BEEEP, no allocs found for test $c!!!\n";
            next;
        }
        print " $count allocations to excersize\n";

        for ( 1 .. $count ) {
            my $limit = $_;
            my $fail;

            if($tortalloc && ($tortalloc != $limit)) {
                next;
            }

            print "Alloc no: $limit\r" if(!$gdbthis);
            
            # make the memory allocation function number $limit return failure
            $ENV{'CURL_MEMLIMIT'} = $limit;

            # remove memdump first to be sure we get a new nice and clean one
            unlink($memdump);
            
            print "**> Alloc number $limit is now set to fail <**\n" if($gdbthis);

            my $ret = system($testcmd);

            # verify that it returns a proper error code, doesn't leak memory
            # and doesn't core dump
            if($ret & 255) {
                print " system() returned $ret\n";
                $fail=1;
            }
            else {
                my @memdata=`$memanalyze $memdump`;
                my $leak=0;
                for(@memdata) {
                    if($_ ne "") {
                        # well it could be other memory problems as well, but
                        # we call it leak for short here
                        $leak=1;
                    }
                }
                if($leak) {
                    print "** MEMORY FAILURE\n";
                    print @memdata;
                    print `$memanalyze -l $memdump`;
                    $fail = 1;
                }
            }
            if($fail) {
                print " Failed on alloc number $limit in test $c.\n",
                " invoke with -t$c,$limit to repeat this single case.\n";
                stopservers();
                exit 1;
            }
        }
        print "\n torture test $c did GOOD\n";

        # all is well, now test a different kind of URL
    }
    stopservers();
    exit; # for now, we stop after these tests
}

#######################################################################
# stop the given test server
#
sub stopserver {
    my $pid = $_[0];
    # check for pidfile
    if ( -f $pid ) {
        my $PIDFILE = $pid;
        $pid = serverpid($PIDFILE);
        unlink $PIDFILE; # server is killed
    }
    elsif($pid <= 0) {
        return; # this is not a good pid
    }

    my $res = kill (9, $pid); # die!

    if($res && $verbose) {
        print "RUN: Test server pid $pid signalled to die\n";
    }
    elsif($verbose) {
        print "RUN: Test server pid $pid didn't exist\n";
    }
}

#######################################################################
# check the given test server if it is still alive
#
sub checkserver {
    my ($pidfile)=@_;
    my $pid=0;

    # check for pidfile
    if ( -f $pidfile ) {
        $pid=serverpid($pidfile);
        if ($pid ne "" && kill(0, $pid)) {
            return $pid;
        }
        else {
            return -$pid; # negative means dead process
        }
    }
    return 0;
}

#######################################################################
# start the http server, or if it already runs, verify that it is our
# test server on the test-port!
#
sub runhttpserver {
    my $verbose = $_[0];
    my $RUNNING;
    my $pid;

    $pid = checkserver ($HTTPPIDFILE);

    # verify if our/any server is running on this port
    my $cmd = "$CURL -o log/verifiedserver --silent -i $HOSTIP:$HOSTPORT/verifiedserver 2>/dev/null";
    print "CMD; $cmd\n" if ($verbose);
    my $res = system($cmd);

    $res >>= 8; # rotate the result
    my $data;

    print "RUN: curl command returned $res\n" if ($verbose);

    open(FILE, "<log/verifiedserver");
    my @file=<FILE>;
    close(FILE);
    $data=$file[0]; # first line

    if ( $data =~ /WE ROOLZ: (\d+)/ ) {
        $pid = 0+$1;
    }
    elsif($data || ($res != 7)) {
        print "RUN: Unknown HTTP server is running on port $HOSTPORT\n";
        return -2;
    }

    if($pid > 0) {
        my $res = kill (9, $pid); # die!
        if(!$res) {
            print "RUN: Failed to kill test HTTP server, do it manually and",
            " restart the tests.\n";
            exit;
        }
        sleep(1);
    }

    my $flag=$debugprotocol?"-v ":"";
    my $dir=$ENV{'srcdir'};
    if($dir) {
        $flag .= "-d \"$dir\" ";
    }
    $cmd="$perl $srcdir/httpserver.pl $flag $HOSTPORT &";
    system($cmd);
    if($verbose) {
        print "CMD: $cmd\n";
    }

    my $verified;
    for(1 .. 10) {
        # verify that our server is up and running:
        my $data=`$CURL --silent -i $HOSTIP:$HOSTPORT/verifiedserver 2>/dev/null`;

        if ( $data =~ /WE ROOLZ: (\d+)/ ) {
            $pid = 0+$1;
            $verified = 1;
            last;
        }
        else {
            if($verbose) {
                print STDERR "RUN: Retrying HTTP server existence in 3 sec\n";
            }
            sleep(3);
            next;
        }
    }
    if(!$verified) {
        print STDERR "RUN: failed to start our HTTP server\n";
        return -1;
    }

    if($verbose) {
        print "RUN: HTTP server is now verified to be our server\n";
    }

    return $pid;
}

#######################################################################
# start the https server (or rather, tunnel) if needed
#
sub runhttpsserver {
    my $verbose = $_[0];
    my $STATUS;
    my $RUNNING;

    if(!$stunnel) {
        return 0;
    }

    my $pid=checkserver($HTTPSPIDFILE );

    if($pid > 0) {
        # kill previous stunnel!
        if($verbose) {
            print "RUN: kills off running stunnel at $pid\n";
        }
        stopserver($HTTPSPIDFILE);
    }

    my $flag=$debugprotocol?"-v ":"";
    my $cmd="$perl $srcdir/httpsserver.pl $flag -s \"$stunnel\" -d $srcdir -r $HOSTPORT $HTTPSPORT &";
    system($cmd);
    if($verbose) {
        print "CMD: $cmd\n";
    }
    sleep(1);

    for(1 .. 10) {
        $pid=checkserver($HTTPSPIDFILE);

        if($pid <= 0) {
            if($verbose) {
                print STDERR "RUN: waiting 3 sec for HTTPS server\n";
            }
            sleep(3);
        }
        else {
            last;
        }
    }

    return $pid;
}

#######################################################################
# start the ftp server if needed
#
sub runftpserver {
    my $verbose = $_[0];
    my $STATUS;
    my $RUNNING;
    # check for pidfile
    my $pid = checkserver ($FTPPIDFILE );

    if ($pid <= 0) {
        print "RUN: Check port $FTPPORT for our own FTP server\n"
            if ($verbose);


        my $time=time();
        # check if this is our server running on this port:
        my $data=`$CURL -m4 --silent -i ftp://$HOSTIP:$FTPPORT/verifiedserver 2>/dev/null`;

        # if this took more than 2 secs, we assume it "hung" on a weird server
        my $took = time()-$time;
        
        if ( $data =~ /WE ROOLZ: (\d+)/ ) {
            # this is our test server with a known pid!
            $pid = 0+$1;
        }
        else {
            if($data || ($took > 2)) {
                # this is not a known server
                print "RUN: Unknown server on our favourite port: $FTPPORT\n";
                return -1;
            }
        }
    }

    if($pid > 0) {
        print "RUN: Killing a previous server using pid $pid\n" if($verbose);
        my $res = kill (9, $pid); # die!
        if(!$res) {
            print "RUN: Failed to kill our FTP test server, do it manually and",
            " restart the tests.\n";
            return -1;
        }
        sleep(1);
    }
    
    # now (re-)start our server:
    my $flag=$debugprotocol?"-v ":"";
    $flag .= "-s \"$srcdir\"";
    my $cmd="$perl $srcdir/ftpserver.pl $flag $FTPPORT &";
    if($verbose) {
        print "CMD: $cmd\n";
    }
    system($cmd);

    my $verified;
    for(1 .. 10) {
        # verify that our server is up and running:
        my $data=`$CURL --silent -i ftp://$HOSTIP:$FTPPORT/verifiedserver 2>/dev/null`;

        if ( $data =~ /WE ROOLZ: (\d+)/ ) {
            $pid = 0+$1;
            $verified = 1;
            last;
        }
        else {
            if($verbose) {
                print STDERR "RUN: Retrying FTP server existence in 3 sec\n";
            }
            sleep(3);
            next;
        }
    }
    if(!$verified) {
        warn "RUN: failed to start our FTP server\n";
        return -2;
    }

    if($verbose) {
        print "RUN: FTP server is now verified to be our server\n";
    }

    return $pid;
}

#######################################################################
# start the ftps server (or rather, tunnel) if needed
#
sub runftpsserver {
    my $verbose = $_[0];
    my $STATUS;
    my $RUNNING;

    if(!$stunnel) {
        return 0;
    }
    my $pid=checkserver($FTPSPIDFILE );

    if($pid > 0) {
        # kill previous stunnel!
        if($verbose) {
            print "kills off running stunnel at $pid\n";
        }
        stopserver($FTPSPIDFILE);
    }

    my $flag=$debugprotocol?"-v ":"";
    my $cmd="$perl $srcdir/ftpsserver.pl $flag -s \"$stunnel\" -d $srcdir -r $FTPPORT $FTPSPORT &";
    system($cmd);
    if($verbose) {
        print "CMD: $cmd\n";
    }
    sleep(1);

    for(1 .. 10) {

        $pid=checkserver($FTPSPIDFILE );

        if($pid <= 0) {
            if($verbose) {
                print STDERR "RUN: waiting 3 sec for FTPS server\n";
            }
            sleep(3);
        }
        else {
            last;
        }
    }

    return $pid;
}

#######################################################################
# Remove all files in the specified directory
#
sub cleardir {
    my $dir = $_[0];
    my $count;
    my $file;

    # Get all files
    opendir(DIR, $dir) ||
        return 0; # can't open dir
    while($file = readdir(DIR)) {
        if($file !~ /^\./) {
            unlink("$dir/$file");
            $count++;
        }
    }
    closedir DIR;
    return $count;
}

#######################################################################
# filter out the specified pattern from the given input file and store the
# results in the given output file
#
sub filteroff {
    my $infile=$_[0];
    my $filter=$_[1];
    my $ofile=$_[2];

    open(IN, "<$infile")
        || return 1;

    open(OUT, ">$ofile")
        || return 1;

    # print "FILTER: off $filter from $infile to $ofile\n";

    while(<IN>) {
        $_ =~ s/$filter//;
        print OUT $_;
    }
    close(IN);
    close(OUT);    
    return 0;
}

#######################################################################
# compare test results with the expected output, we might filter off
# some pattern that is allowed to differ, output test results
#

sub compare {
    # filter off patterns _before_ this comparison!
    my ($subject, $firstref, $secondref)=@_;

    my $result = compareparts($firstref, $secondref);

    if($result) {
        if(!$short) {
            print "\n $subject FAILED:\n";
            print showdiff($firstref, $secondref);
        }
        else {
            print "FAILED\n";
        }
    }
    return $result;
}

#######################################################################
# display information about curl and the host the test suite runs on
#
sub checkcurl {

    unlink($memdump); # remove this if there was one left

    my $curl;
    my $libcurl;
    my @version=`$CURL -V 2>/dev/null`;
    for(@version) {
        chomp;

        if($_ =~ /^curl/) {
            $curl = $_;
            $curl =~ s/^(.*)(libcurl.*)/$1/g;
            $libcurl = $2;
            if($curl =~ /mingw32/) {
                # This is a windows minw32 build, we need to translate the
                # given path to the "actual" windows path.

                my @m = `mount`;
                my $matchlen;
                my $bestmatch;
                my $mount;

# example mount output:
# C:\DOCUME~1\Temp on /tmp type user (binmode,noumount)
# c:\ActiveState\perl on /perl type user (binmode)
# C:\msys\1.0\bin on /usr/bin type user (binmode,cygexec,noumount)
# C:\msys\1.0\bin on /bin type user (binmode,cygexec,noumount)

                foreach $mount (@m) {
                    if( $mount =~ /(.*) on ([^ ]*) type /) {
                        my ($mingw, $real)=($2, $1);
                        if($pwd =~ /^$mingw/) {
                            # the path we got from pwd starts with the path
                            # we found on this line in the mount output

                            my $len = length($real);
                            if($len > $matchlen) {
                                # we remember the match that is the longest
                                $matchlen = $len;
                                $bestmatch = $real;
                            }
                        }
                    }
                }
                if(!$matchlen) {
                    print "Serious error, can't find our \"real\" path!\n";
                }
                else {
                    # now prepend the prefix from the mount command to build
                    # our "actual path"
                    $pwd = "$bestmatch$pwd";
                }
                $pwd =~ s#\\#/#g;
            }
            elsif ($curl =~ /win32/)
            {
               # Native Windows builds don't understand the
               # output of cygwin's pwd.  It will be
               # something like /cygdrive/c/<some path>.
               #
               # Use the cygpath utility to convert the
               # working directory to a Windows friendly
               # path.  The -m option converts to use drive
               # letter:, but it uses / instead \.  Forward
               # slashes (/) are easier for us.  We don't
               # have to escape them to get them to curl
               # through a shell.
               chomp($pwd = `cygpath -m $pwd`);
           }
        }
        elsif($_ =~ /^Protocols: (.*)/i) {
            # these are the supported protocols, we don't use this knowledge
            # at this point
        }
        elsif($_ =~ /^Features: (.*)/i) {
            my $feat = $1;
            if($feat =~ /debug/i) {
                # debug is a listed "feature", use that knowledge
                $curl_debug = 1;
                # set the NETRC debug env
                $ENV{'CURL_DEBUG_NETRC'} = 'log/netrc';
            }
            if($feat =~ /SSL/i) {
                # ssl enabled
                $ssl_version=1;
            }
            if($feat =~ /Largefile/i) {
                # large file support
                $large_file=1;
            }
        }
    }
    if(!$curl) {
        die "couldn't run curl!"
    }

    my $hostname=`hostname`;
    my $hosttype=`uname -a`;

    print "********* System characteristics ******** \n",
    "* $curl\n",
    "* $libcurl\n",
    "* Host: $hostname",
    "* System: $hosttype";

    printf("* Server SSL:       %s\n", $stunnel?"ON":"OFF");
    printf("* libcurl SSL:      %s\n", $ssl_version?"ON":"OFF");
    printf("* libcurl debug:    %s\n", $curl_debug?"ON":"OFF");
    printf("* valgrind:         %s\n", $valgrind?"ON":"OFF");
    print "***************************************** \n";
}

#######################################################################
# substitute the variable stuff into either a joined up file or 
# a command, in either case passed by reference
#
sub subVariables {
  my ($thing) = @_;
  $$thing =~ s/%HOSTIP/$HOSTIP/g;
  $$thing =~ s/%HOSTPORT/$HOSTPORT/g;
  $$thing =~ s/%HTTPPORT/$HOSTPORT/g;
  $$thing =~ s/%HTTPSPORT/$HTTPSPORT/g;
  $$thing =~ s/%FTPPORT/$FTPPORT/g;
  $$thing =~ s/%FTPSPORT/$FTPSPORT/g;
  $$thing =~ s/%SRCDIR/$srcdir/g;
  $$thing =~ s/%PWD/$pwd/g;
}

#######################################################################
# Run a single specified test case
#

sub singletest {
    my $testnum=$_[0];

    my @what;
    my $why;
    my $serverproblem;

    # load the test case file definition
    if(loadtest("${TESTDIR}/test${testnum}")) {
        if($verbose) {
            # this is not a test
            print "RUN: $testnum doesn't look like a test case!\n";
        }
        $serverproblem = 100;
    }
    else {
        @what = getpart("client", "features");
    }

    printf("test %03d...", $testnum);
    
    for(@what) {
        my $f = $_;
        $f =~ s/\s//g;

        if($f eq "SSL") {
            if($ssl_version) {
                next;
            }
        }
        elsif($f eq "netrc_debug") {
            if($curl_debug) {
                next;
            }
        }
        elsif($f eq "large_file") {
            if($large_file) {
                next;
            }
        }

        $why = "curl lacks $f support";
        $serverproblem = 15; # set it here
        last;
    }

    if(!$serverproblem) {
        $serverproblem = serverfortest($testnum);
    }

    if($serverproblem) {
        # there's a problem with the server, don't run
        # this particular server, but count it as "skipped"
        if($serverproblem == 2) {
            $why = "server problems";
        }
        elsif($serverproblem == 100) {
            $why = "no test";
        }
        elsif($serverproblem == 99) {
            $why = "bad test";
        }
        elsif($serverproblem == 15) {
            # set above, a lacking prereq
        }
        elsif($serverproblem == 1) {
            $why = "no HTTPS server";
        }
        elsif($serverproblem == 3) {
            $why = "no FTPS server";
        }
        else {
            $why = "unfulfilled requirements";
        }
        $skipped++;
        $skipped{$why}++;
        $teststat[$testnum]=$why; # store reason for this test case
        
        print "SKIPPED\n";
        if(!$short) {
            print "* Test $testnum: $why\n";
        }

        return -1;
    }

    # extract the reply data
    my @reply = getpart("reply", "data");
    my @replycheck = getpart("reply", "datacheck");

    if (@replycheck) {
        # we use this file instead to check the final output against

        my %hash = getpartattr("reply", "datacheck");
        if($hash{'nonewline'}) {
            # Yes, we must cut off the final newline from the final line
            # of the datacheck
            chomp($replycheck[$#replycheck]);
        }
    
        @reply=@replycheck;
    }

    # curl command to run
    my @curlcmd= getpart("client", "command");

    # this is the valid protocol blurb curl should generate
    my @protocol= getpart("verify", "protocol");

    # redirected stdout/stderr to these files
    $STDOUT="$LOGDIR/stdout$testnum";
    $STDERR="$LOGDIR/stderr$testnum";

    # if this section exists, we verify that the stdout contained this:
    my @validstdout = getpart("verify", "stdout");

    # if this section exists, we verify upload
    my @upload = getpart("verify", "upload");

    # if this section exists, it is FTP server instructions:
    my @ftpservercmd = getpart("server", "instruction");

    my $CURLOUT="$LOGDIR/curl$testnum.out"; # curl output if not stdout

    # name of the test
    my @testname= getpart("client", "name");

    if(!$short) {
        my $name = $testname[0];
        $name =~ s/\n//g;
        print "[$name]\n";
    }

    if($listonly) {
        return 0; # look successful
    }

    my @codepieces = getpart("client", "tool");

    my $tool="";
    if(@codepieces) {
        $tool = $codepieces[0];
        chomp $tool;
    }

    # remove previous server output logfile
    unlink($SERVERIN);

    if(@ftpservercmd) {
        # write the instructions to file
        writearray($FTPDCMD, \@ftpservercmd);
    }

    my (@setenv)= getpart("client", "setenv");
    my @envs;

    my $s;
    for $s (@setenv) {
        chomp $s; # cut off the newline

        subVariables \$s;

        if($s =~ /([^=]*)=(.*)/) {
            my ($var, $content)=($1, $2);
            $ENV{$var}=$content;
            # remember which, so that we can clear them afterwards!
            push @envs, $var;
        }
    }

    # get the command line options to use
    my ($cmd, @blaha)= getpart("client", "command");

    # make some nice replace operations
    $cmd =~ s/\n//g; # no newlines please

    # substitute variables in the command line
    subVariables \$cmd;

    if($curl_debug) {
        unlink($memdump);
    }

    my @inputfile=getpart("client", "file");
    if(@inputfile) {
        # we need to generate a file before this test is invoked
        my %hash = getpartattr("client", "file");

        my $filename=$hash{'name'};

        if(!$filename) {
            print "ERROR: section client=>file has no name attribute!\n";
            exit;
        }
        my $fileContent = join('', @inputfile);
        subVariables \$fileContent;
#        print "DEBUG: writing file " . $filename . "\n";
        open OUTFILE, ">$filename";
        binmode OUTFILE; # for crapage systems, use binary       
        print OUTFILE $fileContent;
        close OUTFILE;
    }

    my %cmdhash = getpartattr("client", "command");

    my $out="";

    if($cmdhash{'option'} !~ /no-output/) {
        #We may slap on --output!
        if (!@validstdout) {
            $out=" --output $CURLOUT ";
        }
    }

    my $cmdargs;
    if(!$tool) {
        # run curl, add -v for debug information output
        $cmdargs ="$out --include -v $cmd";