Objective-C

Get an FTP Listing Entry's Permissions

Demonstrates the Chilkat Ftp2.GetPermissions method, which returns the permissions or status string of a cached directory-listing entry. The only argument is a zero-based index. The value is empty when the server provides no such metadata.

Background: FTP has no single standard permissions format, so what this returns depends on the server — commonly a Unix-style mode string like drwxr-xr-x, but potentially something else. Because the format varies, pair it with GetPermType to learn how to interpret the string before parsing it, rather than assuming a fixed layout.

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Objective-C

#import <CkoFtp2.h>
#import <NSString.h>

BOOL success = NO;

//  Demonstrates the Ftp2.GetPermissions method, which returns the permissions or status string of
//  a cached directory-listing entry.  The only argument is a zero-based index.

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

ftp.Hostname = @"ftp.example.com";
ftp.Username = @"myFtpLogin";

//  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.
ftp.Password = @"myPassword";

success = [ftp Connect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

success = [ftp ChangeRemoteDir: @"public_html"];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

//  GetDirCount retrieves the directory listing on the first call and returns the number of
//  entries.  A negative return indicates failure.
int n = [[ftp GetDirCount] intValue];
if (n < 0) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

int i;
for (i = 0; i <= n - 1; i++) {
    NSString *name = [ftp GetFilename: [NSNumber numberWithInt: i]];

    //  The permissions string is empty when the server provides no such metadata.  Use
    //  GetPermType to learn how to interpret the string's format.
    NSString *perms = [ftp GetPermissions: [NSNumber numberWithInt: i]];
    NSLog(@"%@%@%@",perms,@"  ",name);
}

success = [ftp Disconnect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}