On Mar 14, 2010, at 3:22 PM, gMail.com wrote:
> Hi,
> I can't find a way in Cocoa to mount a dmg disk.
> So I would try to call the shell through a NSTask.
> I succeed on the Terminal when executing this command line:
>
> echo -n password | hdiutil mount /Users/john/Documents/MyDmgDisk.dmg
>
> But when I pass this command line to the NSTask, I fail all the time.
> Furthermore, the app stops to output my NSLog messages to the XCode console.
> Please, what do I miss?
>
> NSString *commandLine = @"echo -n password | hdiutil mount
> /Users/john/Documents/MyDmgDisk.dmg";
>
> NSArray *args = [NSArray arrayWithObjects:@"-c", commandLine , nil];
> NSTask *task = [[NSTask alloc] init];
> [task setLaunchPath:@"/bin/sh"];
> [task setArguments:args];
> [task setStandardOutput:[NSFileHandle fileHandleWithNullDevice]];
> [task setStandardError:[NSFileHandle fileHandleWithStandardError]];
> [task launch];
> [task waitUntilExit];
> int result = [task terminationStatus];
> [task release];
>
>
> Please note, in case of no password, I simply call
> system("hdiutil mount Users/john/Documents/MyDmgDisk.dmg");
> and it works well all the time. But even here, I don't know how to deal with
> the password. Any idea?You're relying too heavily on the shell, and you're not passing the necessary -stdinpass option to hdiutil. Try (written in Mail, no guarantees): NSArray *args = [NSArray arrayWithObjects:@"hdiutil", @"mount", @"-stdinpass", pathToDMG, nil]; NSTask *task = [[NSTask alloc] init]; NSPipe *pipe = [NSPipe pipe]; [task setLaunchPath:@"/usr/bin/hdiutil"]; [task setArguments:args]; [task setStandardInput:pipe]; [task setStandardOutput:[NSFileHandle fileHandleWithNullDevice]]; [task setStandardError:[NSFileHandle fileHandleWithStandardError]]; [task launch]; [[pipe fileHandleForWriting] writeData:[@"password" dataUsingEncoding:NSUTF8StringEncoding]]; [[pipe fileHandleForWriting] closeFile]; [task waitUntilExit]; int result = [task terminationStatus]; [task release]; -- Gwynne
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