Home PHP: Copying file permissions with fileperms and ftp_chmod
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PHP: Copying file permissions with fileperms and ftp_chmod

AllenJB
1#
AllenJB Published in 2010-06-15 14:06:55Z

The overall goal: Copy the permissions of files from the local filesystem when uploading them over FTP using PHP.

The problem: While ftp_chmod appears to succeed, and according to the print statement in the code I'm setting the right permissions, it sets completely wrong permissions.

The code:

<?php
    $perms = fileperms($src);
    if ($perms !== false) {
        // We only take the last 3 digits, since we're only interested in 'normal' file permissions, not extended ones.
        $perms &= 511;
        $permsm = sprintf('%o', $perms);
        print "DEBUG: Setting permissions: $perms :: ". decoct($perms) ." :: $permsm :: $dst\n";
        ftp_chmod($conn_id, $permsm, $dst);
    }
?>

The result: Source / expected file permissions (local filesystem):

-rw-r--r-- 1 allen users  15572 Jun  2 12:40 Foo.docx
-rw-r--r-- 1 allen users  16877 Jun  2 12:40 Bar.docx
drwxr-xr-x 2 allen users   4096 Jun 15 14:01 configuration
drwxr-xr-x 9 allen users   4096 Jun 15 14:01 content
drwxr-xr-x 3 allen users   4096 Jun 15 14:01 local
-rw-r--r-- 1 allen users 152274 Jun 11 17:13 foo1.sql
-rw-r--r-- 1 allen users   9984 Mar  2 10:44 footest.sql
drwxrwxrwx 2 allen users   4096 Jun 15 14:01 tmp
drwxr-xr-x 3 allen users   4096 Jun 15 14:01 versions

Destination / actual result file permissions (ftp upload):

--w----r-T 1 ftptest ftptest  15572 Jun 15 14:42 Foo.docx
--w----r-T 1 ftptest ftptest  16877 Jun 15 14:42 Bar.docx
d-wxrw--wt 2 ftptest ftptest   4096 Jun 15 14:42 configuration
d-wxrw--wt 9 ftptest ftptest   4096 Jun 15 14:42 content
d-wxrw--wt 3 ftptest ftptest   4096 Jun 15 14:42 local
--w----r-T 1 ftptest ftptest 152274 Jun 15 14:42 foo1.sql
--w----r-T 1 ftptest ftptest   9984 Jun 15 14:42 footest.sql
dr----x--t 2 ftptest ftptest   4096 Jun 15 14:42 tmp
d-wxrw--wt 3 ftptest ftptest   4096 Jun 15 14:42 versions
Sjoerd
2#
Sjoerd Reply to 2010-06-15 14:52:52Z

Pass $perms to ftp_chmod, not $permsm.

Sjoerd
3#
Sjoerd Reply to 2010-06-15 14:14:30Z

Use $perms &= 0511 instead of $perms &= 511. Permission masks are in octal notation, and the preceding 0 will make PHP interpret the number as octal.

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