Posted by Richard Lynch on 02/23/05 18:45

Maybe try the active/passive thing...

Often-times, the client/server will/won't allow one or the other, based on
their idea of what's safe/fast.

Disclaimer: For all I know, FTPS doesn't even HAVE active/passive
distinction; Just guessing based on regular FTP problems posted in the
past.

Tim Boring wrote:
> I need to transfer files between a server at my company and one of our
> vendors. The vendor's running a SecureFTP (FTPS) server. In order to
> automate this from our side, I've created a class that wraps the ftp
> functions in an object.
>
> When I test my class on a standard FTP server, everything works fine: I
> can login, chdir, chmod, get/nb_get, put/nb_put, etc. However, when I
> connect to the vendor's server using ftp_ssl_connect (instead of
> ftp_connect), everything works fine with the exception of put/nb_put and
> get/nb_get. (I'm testing using PHPUnit2, and all my tests pass except
> for the get/put tests.)
>
> At first, I thought it may be a firewall issue, but I've checked the
> logs on our firewall and nothing is being logged as being blocked at
> that level. Also, the firewall rule is written in such a way that it's
> allowing all traffic to/from the vendor's server; so it doesn't appear
> like it's an issue with the data port not being open. I have verified
> that the same commands I'm using in my PHP code work using an FTP
> client, and they do. I've used lftp to connect to the vendor's FTPS
> server, chmod, chdir, get/put files...everything works fine.
>
> For the put/get commands, when I run my PHPUnit2 tests, I am getting the
> following output on the put/nb_put and get/nb_put commands:
>
> Warning: ftp_nb_put(): PORT command successful.
> in /home/tboring/scripts/ftp.class.php on line 490
>
> Warning: ftp_put(): PORT command successful.
> in /home/tboring/scripts/ftp.class.php on line 587
>
> Warning: ftp_get(): PORT command successful.
> in /home/tboring/scripts/ftp.class.php on line 399
>
> Warning: ftp_nb_get(): PORT command successful.
> in /home/tboring/scripts/ftp.class.php on line 453
>
> Here's the actual code from my test object for all 4 commands:
>
> function testNbput()
> {
> $this->FTP->nb_put("output.test", "output.test", FTP_ASCII);
>
> echo "\nTest Name: testNbput()\n";
> $this->assertEquals(0, $this->FTP->getVar(error_code));
> }
>
> function testPut()
> {
> $this->FTP->put('output.test', 'output.test', FTP_ASCII);
>
> echo "\nTest Name: testPut()\n";
> $this->assertEquals(0, $this->FTP->getVar(error_code));
> }
>
> function testGet()
> {
> $this->FTP->get("/tmp/test.txt", "test.txt", FTP_ASCII);
>
> echo "\nTest Name: testGet()\n";
> $this->assertEquals(0, $this->FTP->getVar(error_code));
> }
>
> function testNbget()
> {
> $this->FTP->nb_get("/tmp/test.txt", "test.txt", FTP_ASCII);
>
> echo "\nTest Name: testNbget()\n";
> $this->assertEquals(0, $this->FTP->getVar(error_code));
> }
>
> Here's the corresponding code from my class:
>
> function get($local_file, $remote_file, $mode)
> {
> if (isset($this->conn_id)) {
> if (ftp_get($this->conn_id, $local_file, $remote_file, $mode)) {
> $this->xfer_status = "FTP_FINISHED";
> $this->last_file_downloaded = $remote_file;
> $this->error_code = 0;
> } else {
> $this->error_code = 11;
> $this->error_message = "Unable to get file $file using $mode.";
> }
> } else {
> $this->error_code = 7;
> $this->error_message = "There is no current connection to an
> FTP/FTPS server.";
> }
> }
>
> function nb_get($local_file, $remote_file, $mode)
> {
> if (isset($this->conn_id)) {
> $status = ftp_nb_get($this->conn_id, $local_file, $remote_file,
> $mode);
>
> while ($status == FTP_MOREDATA) {
> $status = ftp_nb_continue($this->conn_id);
> }
>
> if ($status != FTP_FINISHED) {
> $this->xfer_status = "FTP_FAILED";
> $this->error_code = 11;
> $this->error_message = "Unable to download file $file using
> $mode.";
> } else {
> $this->xfer_status = "FTP_FINISHED";
> $this->last_file_downloaded = $remote_file;
> $this->error_code = 0;
> }
> } else {
> $this->error_code = 7;
> $this->error_message = "There is no current connection to an
> FTP/FTPS server.";
> }
> }
>
> function nb_put($remote_file, $local_file, $mode)
> {
> if (isset($this->conn_id)) {
> $status = ftp_nb_put($this->conn_id, $remote_file, $local_file,
> $mode);
>
> while ($status == FTP_MOREDATA) {
> $status = ftp_nb_continue($this->conn_id);
> }
>
> if ($status != FTP_FINISHED) {
> $this->xfer_status = "FTP_FAILED";
> $this->error_code = 11;
> $this->error_message = "Unable to upload file $file using
> $mode.";
> } else {
> $this->xfer_status = "FTP_FINISHED";
> $this->last_file_uploaded = $local_file;
> $this->error_code = 0;
> }
> } else {
> $this->error_code = 7;
> $this->error_message = "There is no current connection to an
> FTP/FTPS server.";
> }
> }
>
> function put($remote_file, $local_file, $mode)
> {
> if ($this->conn_id) {
> if (ftp_put($this->conn_id, $remote_file, $local_file, $mode)) {
> $this->xfer_status = FTP_FINISHED;
> $this->last_file_uploaded = $local_file;
> $this->error_code = 0;
> } else {
> $this->xfer_status = FTP_FAILED;
> $this->error_code = 11;
> $this->error_message = "Unable to upload file $file using
> $mode.";
> }
> } else {
> $this->error_code = 7;
> $this->error_message = "There is no current connection to an
> FTP/FTPS server.";
> }
> }
>
> I've gone through and checked what I think are all the obvious things.
> I've made sure that the get commands are getting files that actually
> exist; if the files didn't exist, however, I'd be getting "file does not
> exist" errors (I know because I had some typos in my filenames). On th
> e put commands, I've verified that the files I'm trying to upload
> actually exist on my local machine and that my program is in the correct
> directory when attempting the transfer...and it is.
>
> I'm currently in the process of getting in contact with the FTP server
> admin to see if they can spot any error messages in the FTP server logs,
> but given that the vendor is a fairly large company that may take
> several days to actually track this person down.
>
> At this point I'm trying to narrow down the problem to find out if it's
> an issue with my code, the FTPS server, or with PHP's ftp functionality.
> Does anyone have any ideas or suggestions?
>
> Thanks,
> Tim
>
>
>
>
>
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