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This queue is for tickets about the Net-FTPServer CPAN distribution.

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The Basics
Id: 28783
Status: new
Priority: 0/
Queue: Net-FTPServer

Owner: Nobody in particular
Requestors: MUIR [...]

Bug Information
Severity: Important
Broken in: 1.122
Fixed in: (no value)

Subject: PATCH: Better control of Anonymous, chroot to non-homedirs
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text/plain 851b
Two items: first, there is a bug in the Full server in the way it handles root directories: you cannot chroot a real user with a real home directory to anywhere other than their home directory because their real home directory overrides the configuration directive. Second, there are situations where you don't want the anonymous ftp user to be the user 'ftp' using ftp's home directory. In particular, with virtual hosts it's often handy to have the anonymous user be somebody else and chroot'ed to somewhere else. My new configuration directives are: anonymous user: specifies which user anonymous logins become anonymous root: specifies the chroot directory for anonymous logins I made a "patch" to fix these... My patch is a subclass of Full::Server. To take my changes, simply replace Full::Server's user_login_hook() with my version.
text/x-perl 1.5k
package Net::FTPServer::Full::Server::Anon; use strict; use Net::FTPServer::Full::Server; our @ISA = qw(Net::FTPServer::Full::Server); our $VERSION = 1.0; sub user_login_hook { my $self = shift; my $user = shift; my $user_is_anon = shift; my ($login, $pass, $uid, $gid, $quota, $comment, $gecos, $homedir); if (! $user_is_anon) { # Saved real Unix user (from the "password file" option)? $user = $self->{full_unix_user} if exists $self->{full_unix_user}; ($login, $pass, $uid, $gid) = getpwnam $user or die "no user $user in password file"; # Chroot for this non-anonymous user? If using the "password file" # option then we might have saved a root directory above. my $root_directory = $self->config ("root directory") || $self->{full_root_directory} || undef; if (defined $root_directory) { $root_directory =~ s/%m/(getpwnam $user)[7]/ge; $root_directory =~ s/%U/$user/ge; $root_directory =~ s/%%/%/g; chroot $root_directory or die "cannot chroot: $root_directory: $!"; } } else { my $getpwfunc = sub { getpwnam($_[0]) }; my $anonuser = $self->config("anonymous user") || 'ftp'; $getpwfunc = sub { getpwuid($_[0]) } if $anonuser =~ /^\d+$/; ($login, $pass, $uid, $gid, $quota, $comment, $gecos, $homedir) = &$getpwfunc($anonuser) or die "no $anonuser user in password file"; my $home = $self->config("anonymous root") || $homedir; chroot $home or die "cannot chroot: $home: $!"; } $self->_drop_privs ($uid, $gid, $login); } 1;

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