Bug #11407: Net::FTP nlst method return wrong data and don't raise Error when path is wrong

• Status: Third Party's Issue
• Assignee: shugo (Shugo Maeda)
• Target version: -
• ruby -v: 2.3.0
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[Draqun (Damian Giebas)]

I found bug in nlst function. When we have situatiuon on ftp like this

/
my_folder/
some_file.txt
some_another_file.txt

and we go to "my_folder"

ftp_handler.chdir("my_folder")
and use nlst from this folder on file "some_another_file.txt"

ftp_handler.nlst("../some_another_file.txt") it return

['../some_another_file.txt/some_another_file.txt']

I think this is bug. In this case function should return ['../some_another_file.txt']

It still "working" when my path is worong. When I'm still in "my_folder" and I use nlst with weird path

ftp_handler.nlst("../../../../../../some_another_file.txt")

it return ["../../../../../../some_another_file.txt/some_another_file.txt"]. I think it should raise FTPPermError with code 550. This path does not exist.

I found this bug in ruby version 1.9.3 and it still exist in ruby 2.3.0dev.

Can someone confirm me this is bug?

Best regards.

[Draqun (Damian Giebas)]

• Assignee set to shugo (Shugo Maeda)

[shugo (Shugo Maeda)]

• Status changed from Open to Feedback

Damian Giebas wrote:

I found bug in nlst function. When we have situatiuon on ftp like this

/
my_folder/
some_file.txt
some_another_file.txt

and we go to "my_folder"

ftp_handler.chdir("my_folder")
and use nlst from this folder on file "some_another_file.txt"

ftp_handler.nlst("../some_another_file.txt") it return

['../some_another_file.txt/some_another_file.txt']

I think this is bug. In this case function should return ['../some_another_file.txt']

I couldn't reproduce the problem....

require "net/ftp"

ftp = Net::FTP.new("ftp.ruby-lang.org")
ftp.passive = true
ftp.login
ftp.chdir("pub/ruby/2.2")
p ftp.nlst("..")
p ftp.nlst("../ruby-2.2.2.zip") #=> ["../ruby-2.2.2.zip"]

Does the nlist command of /usr/bin/ftp works well with that server?

[Draqun (Damian Giebas)]

When ftp server is on Linux all is fine. Problem is when FTP is on IIS Server 8.0 (and probably with other version of IIS).

[shugo (Shugo Maeda)]

Damian Giebas wrote:

When ftp server is on Linux all is fine. Problem is when FTP is on IIS Server 8.0 (and probably with other version of IIS).

I think it's more likely a server-side problem.
Do you any other FTP client which works with IIS as you expect?

[shugo (Shugo Maeda)]

• Status changed from Feedback to Third Party's Issue