148 lines
3.8 KiB
Objective-C
148 lines
3.8 KiB
Objective-C
#include <string.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#import "ScryptPWGen.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"
|
|
@" -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 },
|
|
{ 'r', @"repeat", 0, &_repeat, NULL },
|
|
{ '\0', nil, 0, NULL, NULL }
|
|
};
|
|
OFOptionsParser *optionsParser =
|
|
[OFOptionsParser parserWithOptions: options];
|
|
of_unichar_t option;
|
|
OFString *site, *prompt;
|
|
char *passphrase;
|
|
OFSHA256Hash *siteHash;
|
|
unsigned char *output;
|
|
|
|
while ((option = [optionsParser nextOption]) != '\0') {
|
|
switch (option) {
|
|
case 'h':
|
|
showHelp(of_stdout, true);
|
|
|
|
[OFApplication terminate];
|
|
|
|
break;
|
|
case ':':
|
|
if (optionsParser.lastLongOption != nil)
|
|
[of_stderr writeFormat:
|
|
@"%@: Argument for option --%@ missing\n",
|
|
[OFApplication programName],
|
|
optionsParser.lastLongOption];
|
|
else
|
|
[of_stderr writeFormat:
|
|
@"%@: Argument for option -%C missing\n",
|
|
[OFApplication programName],
|
|
optionsParser.lastOption];
|
|
|
|
[OFApplication terminateWithStatus: 1];
|
|
break;
|
|
case '?':
|
|
if (optionsParser.lastLongOption != nil)
|
|
[of_stderr writeFormat:
|
|
@"%@: Unknown option: --%@\n",
|
|
[OFApplication programName],
|
|
optionsParser.lastLongOption];
|
|
else
|
|
[of_stderr writeFormat:
|
|
@"%@: Unknown option: -%C\n",
|
|
[OFApplication programName],
|
|
optionsParser.lastOption];
|
|
|
|
[OFApplication terminateWithStatus: 1];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (lengthStr != nil) {
|
|
@try {
|
|
_length = (size_t)[lengthStr decimalValue];
|
|
|
|
if (_length < 3)
|
|
@throw [OFInvalidFormatException exception];
|
|
} @catch (OFInvalidFormatException *e) {
|
|
[of_stderr writeFormat:
|
|
@"%@: Invalid length: %@\n",
|
|
[OFApplication programName], lengthStr];
|
|
|
|
[OFApplication terminateWithStatus: 1];
|
|
}
|
|
} else
|
|
_length = 16;
|
|
|
|
if ([[optionsParser remainingArguments] count] != 1) {
|
|
showHelp(of_stderr, false);
|
|
|
|
[OFApplication terminateWithStatus: 1];
|
|
}
|
|
|
|
site = [[optionsParser remainingArguments] firstObject];
|
|
siteHash = [OFSHA256Hash cryptoHash];
|
|
[siteHash updateWithBuffer: [site UTF8String]
|
|
length: [site UTF8StringLength]];
|
|
|
|
prompt = [OFString stringWithFormat: @"Passphrase for site \"%@\": ",
|
|
site];
|
|
passphrase = getpass([prompt cStringWithEncoding:
|
|
[OFSystemInfo native8BitEncoding]]);
|
|
|
|
output = [self allocMemoryWithSize: _length + 1];
|
|
|
|
of_scrypt(8, 524288, 2, [siteHash digest],
|
|
[[siteHash class] digestSize], passphrase, strlen(passphrase),
|
|
output, _length);
|
|
|
|
of_explicit_memset(passphrase, 0, strlen(passphrase));
|
|
|
|
/*
|
|
* This has a bias, but is what scrypt-genpass does. This should be
|
|
* compatible to passwords generated by scrypt-genpass for now to allow
|
|
* an easy migration.
|
|
*
|
|
* This will be replaced with something better later on and the current
|
|
* code only available in legacy mode (which can be enabled using a
|
|
* flag).
|
|
*/
|
|
output[0] = "abcdefghijklmnopqrstuvwxyz"[output[0] % 26];
|
|
output[1] = "0123456789"[output[1] % 10];
|
|
output[2] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"[output[2] % 26];
|
|
|
|
for (size_t i = 3; i < _length; i++)
|
|
output[i] = "abcdefghijklmnopqrstuvwxyz"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
"0123456789"[output[i] % (26 + 26 + 10)];
|
|
|
|
output[_length] = '\n';
|
|
|
|
[of_stdout writeBuffer: output
|
|
length: _length + 1];
|
|
|
|
of_explicit_memset(output, 0, _length + 1);
|
|
|
|
[OFApplication terminate];
|
|
}
|
|
@end
|