(Objective-C) SCP Upload to a Specific Remote Directory

Demonstrates how to upload a file using the SCP protocol (Secure Copy Protocol over SSH). The file is uploaded to a specific remote directory. It can be either a path relative to the HOME directory of the SSH user account, or an absolute path on the remote filesystem. Obviously, in both cases the SSH user account must have permission to create or overwrite a file in the specified directory.

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#import <CkoSsh.h>
#import <NSString.h>
#import <CkoScp.h>

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

CkoSsh *ssh = [[CkoSsh alloc] init];

// Connect to an SSH server:
NSString *hostname = 0;
int port;

// Hostname may be an IP address or hostname:
hostname = @"www.some-ssh-server.com";
port = 22;

BOOL success = [ssh Connect: hostname port: [NSNumber numberWithInt: port]];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Wait a max of 5 seconds when reading responses..
ssh.IdleTimeoutMs = [NSNumber numberWithInt:5000];

// Authenticate using login/password:
success = [ssh AuthenticatePw: @"myLogin" password: @"myPassword"];
if (success != YES) {
    NSLog(@"%@",ssh.LastErrorText);
    return;
}

// Once the SSH object is connected and authenticated, we use it
// as the underlying transport in our SCP object.
CkoScp *scp = [[CkoScp alloc] init];

success = [scp UseSsh: ssh];
if (success != YES) {
    NSLog(@"%@",scp.LastErrorText);
    return;
}

// This uploads a file to the "uploads/text" directory relative to the HOME
// directory of the SSH user account.  For example, if the HOME directory is /home/chilkat,
// then this uploads to /home/chilkat/uploads/text/test.txt
// Note: The remote target directory must already exist on the SSH server.
NSString *remotePath = @"uploads/text/test.txt";
NSString *localPath = @"/home/bob/test.txt";
success = [scp UploadFile: localPath remotePath: remotePath];
if (success != YES) {
    NSLog(@"%@",scp.LastErrorText);
    return;
}

// This upload fully specifies the absolute remote path.
remotePath = @"/home/chilkat/junk/abc/hamlet.xml";
localPath = @"/home/bob/hamlet.xml";
success = [scp UploadFile: localPath remotePath: remotePath];
if (success != YES) {
    NSLog(@"%@",scp.LastErrorText);
    return;
}

NSLog(@"%@",@"SCP upload file success.");

// Disconnect
[ssh Disconnect];