CryptoPassphrase  Diff

Annotate Patch Side-by-side Diff

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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <unistd.h>

#import "ScryptPWGen.h"
#import "NewPasswordGenerator.h"
#import "LegacyPasswordGenerator.h"

OF_APPLICATION_DELEGATE(ScryptPWGen)

static void
showHelp(OFStream *output, bool verbose)
{
	[output writeFormat: @"Usage: %@ [-hlr] site\n",
			     [OFApplication programName]];

	if (verbose)
		[output writeString:
		    @"\n"
		    @"Options:\n"
		    @"    -h  --help    Show this help\n"
		    @"    -l  --length  Length for the derived password\n"
		    @"    -L  --legacy  Use the legacy algorithm "
		    @"(compatible with scrypt-genpass)\n"
		    @"    -r  --repeat  Repeat input\n"];
}

@implementation ScryptPWGen
- (void)applicationDidFinishLaunching
{
	OFString *lengthStr;
	const of_options_parser_option_t options[] = {
		{ 'h', @"help", 0, NULL, NULL },
		{ 'l', @"length", 1, NULL, &lengthStr },
		{ 'L', @"legacy", 0, &_legacy, NULL },
		{ 'r', @"repeat", 0, &_repeat, NULL },
		{ '\0', nil, 0, NULL, NULL }
	};
	OFOptionsParser *optionsParser =
	    [OFOptionsParser parserWithOptions: options];
	of_unichar_t option;
	size_t length;
	char *passphrase;
	OFString *site, *prompt;

	while ((option = [optionsParser nextOption]) != '\0') {
		switch (option) {
		case 'h':
			showHelp(of_stdout, true);
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				    optionsParser.lastOption];

			[OFApplication terminateWithStatus: 1];
			break;
		}
	}

	if ([[optionsParser remainingArguments] count] != 1) {
		showHelp(of_stderr, false);

		[OFApplication terminateWithStatus: 1];
	}

	site = [[optionsParser remainingArguments] firstObject];
	prompt = [OFString stringWithFormat: @"Passphrase for site \"%@\": ",
					     site];

	id <PasswordGenerator> generator = (_legacy
	    ? [LegacyPasswordGenerator generator]
	    : [NewPasswordGenerator generator]);
	generator.site = [[optionsParser remainingArguments] firstObject];

	if (lengthStr != nil) {
		bool invalid = false;

		@try {
			length = (size_t)[lengthStr decimalValue];

			if (length < 3)
			generator.length = (size_t)[lengthStr decimalValue];
		} @catch (OFInvalidArgumentException *e) {
			invalid = true;
		} @catch (OFInvalidFormatException *e) {
			invalid = true;
		}

				@throw [OFInvalidFormatException exception];
		} @catch (OFInvalidFormatException *e) {
		if (invalid) {
			[of_stderr writeFormat:
			    @"%@: Invalid length: %@\n",
			    [OFApplication programName], lengthStr];

			[OFApplication terminateWithStatus: 1];
		}
	}

	if ([[optionsParser remainingArguments] count] != 1) {
		showHelp(of_stderr, false);

		[OFApplication terminateWithStatus: 1];
	}

	prompt = [OFString stringWithFormat: @"Passphrase for site \"%@\": ",
					     site];

	LegacyPasswordGenerator *generator =
	    [LegacyPasswordGenerator generator];
	generator.length = length;
	generator.site = [[optionsParser remainingArguments] firstObject];

	passphrase = getpass(
	    [prompt cStringWithEncoding: [OFSystemInfo native8BitEncoding]]);
	@try {
		generator.passphrase = passphrase;

		[generator derivePassword];
		@try {
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