From 9b11a84e74086390602237c52d0ed7a95b1c37f9 Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Mon, 17 Sep 2007 18:12:11 +0000
Subject: [PATCH] Make the ftp server connect to the address given by curl in
 the PORT/EPRT instead of hard-coding it to 127.0.0.1

---
 tests/ftpserver.pl      | 11 ++++++++---
 tests/server/sockfilt.c | 21 ++++++++++++++++++---
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/tests/ftpserver.pl b/tests/ftpserver.pl
index e32c019bd..a5b474f5c 100644
--- a/tests/ftpserver.pl
+++ b/tests/ftpserver.pl
@@ -623,6 +623,7 @@ sub PASV_command {
 sub PORT_command {
     my ($arg, $cmd) = @_;
     my $port;
+    my $addr;
 
     # We always ignore the given IP and use localhost.
 
@@ -633,6 +634,7 @@ sub PORT_command {
             return 0;
         }
         $port = ($5<<8)+$6;
+        $addr = "$1.$2.$3.$4";
     }
     # EPRT |2|::1|49706|
     elsif(($cmd eq "EPRT") && ($grok_eprt)) {
@@ -642,6 +644,7 @@ sub PORT_command {
         }
         sendcontrol "200 Thanks for dropping by. We contact you later\r\n";
         $port = $3;
+        $addr = $2;
     }
     else {
         sendcontrol "500 we don't like $cmd now\r\n";
@@ -653,10 +656,12 @@ sub PORT_command {
         return 1;
     }
 
-    # We fire up a new sockfilt to do the data tranfer for us.
+    # We fire up a new sockfilt to do the data transfer for us.
     # FIX: make it use IPv6 if need be
-    $slavepid = open2(\*DREAD, \*DWRITE,
-                      "./server/sockfilt --connect $port --logfile log/sockdata$ftpdnum$ext.log --pidfile .sockdata$ftpdnum$ext.pid $ipv6");
+    my $filtcmd="./server/sockfilt --connect $port --addr $addr --logfile log/sockdata$ftpdnum$ext.log --pidfile .sockdata$ftpdnum$ext.pid $ipv6";
+    $slavepid = open2(\*DREAD, \*DWRITE, $filtcmd);
+
+    print STDERR "$filtcmd\n" if($verbose);
 
     print DWRITE "PING\n";
     my $pong;
diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index b4e1c07f0..2cca0b37b 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -522,6 +522,7 @@ int main(int argc, char *argv[])
   int error;
   int arg=1;
   enum sockmode mode = PASSIVE_LISTEN; /* default */
+  const char *addr = NULL;
 
   while(argc>arg) {
     if(!strcmp("--version", argv[arg])) {
@@ -571,6 +572,14 @@ int main(int argc, char *argv[])
         arg++;
       }
     }
+    else if(!strcmp("--addr", argv[arg])) {
+      /* Set an IP address to use with --connect; otherwise use localhost */
+      arg++;
+      if(argc>arg) {
+        addr = argv[arg];
+        arg++;
+      }
+    }
     else {
       puts("Usage: sockfilt [option]\n"
            " --version\n"
@@ -578,7 +587,9 @@ int main(int argc, char *argv[])
            " --pidfile [file]\n"
            " --ipv4\n"
            " --ipv6\n"
-           " --port [port]");
+           " --port [port]\n"
+           " --connect [port]\n"
+           " --addr [address]");
       return 0;
     }
   }
@@ -615,7 +626,9 @@ int main(int argc, char *argv[])
       me.sin_family = AF_INET;
       me.sin_port = htons(connectport);
       me.sin_addr.s_addr = INADDR_ANY;
-      Curl_inet_pton(AF_INET, "127.0.0.1", &me.sin_addr);
+      if (!addr)
+        addr = "127.0.0.1";
+      Curl_inet_pton(AF_INET, addr, &me.sin_addr);
 
       rc = connect(sock, (struct sockaddr *) &me, sizeof(me));
 #ifdef ENABLE_IPV6
@@ -624,7 +637,9 @@ int main(int argc, char *argv[])
       memset(&me6, 0, sizeof(me6));
       me6.sin6_family = AF_INET6;
       me6.sin6_port = htons(connectport);
-      Curl_inet_pton(AF_INET6, "::1", &me6.sin6_addr);
+      if (!addr)
+        addr = "::1";
+      Curl_inet_pton(AF_INET6, addr, &me6.sin6_addr);
 
       rc = connect(sock, (struct sockaddr *) &me6, sizeof(me6));
     }