(Objective-C) Get FTP File Permissions

Objective-C example showing how to retrieve file permissions (via FTP) for each file in a remote directory.

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#import <CkoFtp2.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoFtp2 *ftp = [[CkoFtp2 alloc] init];

// Set the various properties to establish the connection.
ftp.Hostname = @"ftp.example.com";
ftp.Username = @"login";
ftp.Password = @"password";

// If SSL/TLS is required..
// See http://www.cknotes.com/determining-ftp2-connection-settings/ 
// for more information.
ftp.AuthTls = YES;
ftp.PassiveUseHostAddr = YES;

// Connect to the FTP server:
BOOL success = [ftp ConnectOnly];
if (success != YES) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

// Authenticate with the FTP server.
success = [ftp LoginAfterConnectOnly];
if (success != YES) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

// To get file permissions in UNIX format, disallow MSLD:
ftp.AllowMlsd = NO;

// To get file and sub-directory information, simply
// loop from 0 to ftp.GetDirCount() - 1
int i = 0;
int n = [[ftp GetDirCount] intValue];
if (n < 0) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

// Show the type of permissions information that is available.
// The two most common types are "mlsd" and "unix".  See the
// online reference documentation for more information.
if (n > 0) {
    NSLog(@"%@%@",@"The permissions format is: ",[ftp GetPermType: [NSNumber numberWithInt: 0]]);
}

while (i < n) {

    // Display the permissions and filename
    NSLog(@"%@%@%@",[ftp GetPermissions: [NSNumber numberWithInt: i]],@" ",[ftp GetFilename: [NSNumber numberWithInt: i]]);

    i = i + 1;
}

// Assuming MLSD was possible, let's see the file permissions in MLSD format:
ftp.AllowMlsd = YES;

// Clear the directory cache so we're forced to re-fetch the directory listing:
[ftp ClearDirCache];

n = [[ftp GetDirCount] intValue];
if (n < 0) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

// Show the type of permissions information that is available.
// The two most common types are "mlsd" and "unix".  See the
// online reference documentation for more information.
if (n > 0) {
    NSLog(@"%@",@"----");
    NSLog(@"%@%@",@"The permissions format is: ",[ftp GetPermType: [NSNumber numberWithInt: 0]]);
}

i = 0;
while (i < n) {

    // Display the permissions and filename
    NSLog(@"%@%@%@",[ftp GetPermissions: [NSNumber numberWithInt: i]],@" ",[ftp GetFilename: [NSNumber numberWithInt: i]]);

    i = i + 1;
}

success = [ftp Disconnect];