ncalsmitty1369
Novice
Feb 12, 2008, 11:37 AM
Post #7 of 11
(681 views)
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Hi Kevin,
Sorry that I didn't back to you sooner, went off line for a bit.
To answer your last question about whether or not $rem_file is defined correctly, yes it is. I use it further up in the script and it returns what it is suppose to, which is basically a file name found on the remote server. I have included more of the code below to clear things up a bit more for you. This code sits in a fork and works up until the point of the unlink. Meaning... it connects to a remote server, opens a particular remote dir and checks for files to download, found files are put into a hash with the file name as a key and the file size as the value to that key, the key value are then checked against a local archive and if the file is not found locally it is downloaded, the downloaded file is checked for correct file size, and if everything appears to have gone correctly then the remote file is unlinked.
You were correct in that the quotes I used on that particular line were there for testing. Although I am sure that I could use some attention on my quoting habits!
Something that may or may not be helpful is that if I run the code as listed below I get the following die error from the unlink line:
Couldn't remove /tmp/ssh2_test/testing/test.txt: Invalid argument at ssh2_testing.pl
** That is a valid file in the correct location and with the proper permissions to be removed by the authenticated user. It is the invalid argument part that doesn't quite make sense.
However, if I change the unlink line to include two arguments like ('sf',$rem_name) then I get the following error:
Usage: Net::SSH2::SFTP::unlink(sf, file) at ssh2_testing.pl
Which is why I was asking if anyone could tell me what the 'sf' means. I was thinking that maybe the docs were incorrect and I needed to have two arguments passed?
Here is the section of code dealing with this... Sorry about the readability of the code but my spacing and indentation was lost in the copy and paste.
unless ($kid_pid) {
alarm(60);
v("The get xml billing status child PID of loop $get_xml_cnt is $$ ...\n");
open STDERR,">&ERRORS" or die "Couldn't open ERRORS for writing!";
open TL,">&LOG" or die "Couldn't open $xml_log!";
## connect to remote server with perl and ssh2 module ##
my $ssh2 = Net::SSH2->new();
$ssh2->connect($rem_host) or die "Could not connect to $rem_host: $!";
$ssh2->auth_password($username,$password) or
die "Could not login to $rem_host: $!";
alarm(0);
## uncomment line below to turn on debugging. ##
$ssh2->debug(1);
## open sftp object ##
my $get_xml = $ssh2->sftp();
## get list of files in the /Outbound dir ##
system "touch $work_temp/getting_file_list.sem";
my $list = $get_xml->opendir($rem_dir) or die "Couldn't open dir $rem_dir: $!";
my ($ls_exit, $ls_out, $ls_err) = $ssh2->error;
v("ls stdout is... $ls_out");
v("ls stderr is... $ls_err");
v("ls exit code is... $ls_exit");
if (! $ls_exit) {
v("There was no return code sent back, which means the list cmd ran successfully!\n");
}
else {
v("There seems to be a problem with the list command! The exit status code is: ");
v("-> $ls_exit , reason -> $ls_err.n");
}
while (my $ref = $list->read()) {
next if ( $ref->{name} =~ m/^\.\.?/ );
next if ( $ref->{size} =~ m/4096/ ); ## exclude dirs
v("name: $ref->{name}");
# v("size: $ref->{size}");
# v("uid: $ref->{uid}");
# v("gid: $ref->{gid}\n");
# v("mode: $ref->{mode}");
# v("mtime: $ref->{mtime}");
# v("atime: $ref->{atime}");
%xml_list->{$ref->{name}} = $ref->{size};
}
v("");
print "hash xml_list used ", scalar keys %xml_list, " buckets.\n\n" if ($v);
while( ($rem_name, $rem_size) = each %xml_list ) {
v("key: $rem_name, value: $rem_size.");
if (!-f "$archive_bm/$rem_name" ) {
my $set_unlink=0;
system "touch $work_temp/getting_$rem_name.sem";
my $there = "$rem_dir/$rem_name";
my $here = "$archive_bm/$rem_name";
open WRITE_LOCAL_FILE,">$here" or
die "Couldn't open $here: $!";
sleep(1);
## read $rem_file and write locally ##
my $open_rem_file = $get_xml->open($there) or
die "Couldn't open $there: $!";
my $buff;
while ( $open_rem_file->read($buff,4096) ) {
print WRITE_LOCAL_FILE $buff;
}
close WRITE_LOCAL_FILE;
stat("$archive_bm/$rem_name") or die "Couldn't stat $archive_bm/$rem_name: $!";
v("$archive_bm/$rem_name is $st_size bytes.");
$der_stat=$st_size;
if ( "$der_stat" == "$rem_size") {
v("$rem_name seems to have been copied intact to $archive_bm.\n");
print TL "$rem_name of $rem_size was downloaded at $time on $date.\n";
print STDERR "$rem_name of $rem_size was downloaded at $time on $date.\n";
unlink "$work_temp/getting_$rem_name.sem" or
die "Couldn't remove $work_temp/getting_$rem_name.sem: $!";
$set_unlink=1;
}
else {
v("There seems to have been a problem copying $rem_name to $archive_bm!");
print STDERR "There seems to have been a problem copying $rem_name to " .
"$archive_bm!\n";
}
## code to remove the downloaded file ##
if ( "$set_unlink" == 1 ) {
v("Removing $there after successful download.");
print STDERR "Removing $there after successful download.\n";
$get_xml->unlink($rem_name) or die "Couldn't remove $there: $!";
v("");
}
else {
v("Not removing $there after unsuccessful download attempt!");
print STDERR "Not removing $there after unsuccessful download attempt!\n";
}
sleep(1);
}
else {
v("It appears that this file has already been downloaded.\n");
}
}
v("");
## clean sem files ##
unlink "$work_temp/getting_file_list.sem" or
die "Couldn't remove $work_temp/getting_file_list.sem: $!";
unlink "$work_temp/xml_conn_to_srvr.sem" or
die "Couldn't remove $work_temp/xml_conn_to_srvr.sem: $!";
## exit to parent ##
v("Leaving child now...\n");
close STDERR;
$get_xml->disconnect() or die "Couldn't do disconnect on get_xml: $!";
exit;
}
waitpid($kid_pid,0);
v("The child PID was $kid_pid, back in the parent now...\n");
}
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