PHP

Set a Remote File's POSIX Permissions

Demonstrates the Chilkat SFtp.SetPermissions method, which sets the POSIX permission bits of a remote item. The arguments are the remote path (or handle), whether the first argument is a handle, and the permission bits. Pass the permission bits only, not the file-type bits.

Background: This is the SFTP equivalent of chmod. Common values, written as octal, are 0644 for a normal file, 0600 for a private file, and 0755 for an executable or a directory. In languages without octal literals the same values must be given in decimal or hexadecimal (for example 0755 is decimal 493). Setting an executable bit after uploading a script is the classic use.

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<?php

use Chilkat2\SFtp;

// Demonstrates the SFtp.SetPermissions method, which sets the POSIX permission bits of a remote
// item.  The 1st argument is the remote path (or handle), the 2nd (isHandle) indicates which,
// and the 3rd is the permission bits.

$sftp = new SFtp();

// Connect, authenticate, and initialize the SFTP subsystem.
$port = 22;
try {
    $sftp->Connect('sftp.example.com', $port);

    // Normally you would not hard-code the password in source.  You should instead obtain it
    // from an interactive prompt, environment variable, or a secrets vault.
    $password = 'mySshPassword';

    $sftp->AuthenticatePw('mySshLogin', $password);

    $sftp->InitializeSftp();

    // The 1st argument is a path, so isHandle is false.
    $isHandle = false;

    // Pass the permission bits, not the file-type bits.  0755 gives the owner read/write/execute and
    // read/execute to group and others -- a common mode for an executable script.
    $permissions = 493;
    $sftp->SetPermissions('subdir/script.sh', $isHandle, $permissions);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo "Permissions set.\n";

$sftp->Disconnect();