Rename project to CryptoPassphrase

2019-06-16 19:26:34 +02:00 · 2019-06-16 19:26:34 +02:00 · 135d17bed5
commit 135d17bed5
parent 45f70e97f3
30 changed files with 90 additions and 92 deletions
--- a/CryptoPassphrase.m
+++ b/CryptoPassphrase.m
@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2016 - 2019 Jonathan Schleifer <js@heap.zone>
+ *
+ * https://heap.zone/git/cryptopassphrase.git
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+
+#import "CryptoPassphrase.h"
+#import "NewPasswordGenerator.h"
+#import "LegacyPasswordGenerator.h"
+
+OF_APPLICATION_DELEGATE(CryptoPassphrase)
+
+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"
+		    @"    -k  --keyfile Use the specified key file\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 CryptoPassphrase
+- (void)applicationDidFinishLaunching
+{
+	OFString *keyFilePath, *lengthString;
+	const of_options_parser_option_t options[] = {
+		{ 'h', @"help", 0, NULL, NULL },
+		{ 'k', @"keyfile", 1, NULL, &keyFilePath },
+		{ 'l', @"length", 1, NULL, &lengthString },
+		{ 'L', @"legacy", 0, &_legacy, NULL },
+		{ 'r', @"repeat", 0, &_repeat, NULL },
+		{ '\0', nil, 0, NULL, NULL }
+	};
+	OFOptionsParser *optionsParser =
+	    [OFOptionsParser parserWithOptions: options];
+	of_unichar_t option;
+	OFMutableData *keyFile = nil;
+	OFString *prompt;
+	const char *promptCString;
+	char *passphrase;
+
+	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 (optionsParser.remainingArguments.count != 1) {
+		showHelp(of_stderr, false);
+
+		[OFApplication terminateWithStatus: 1];
+	}
+
+	id <PasswordGenerator> generator = (_legacy
+	    ? [LegacyPasswordGenerator generator]
+	    : [NewPasswordGenerator generator]);
+	generator.site = optionsParser.remainingArguments.firstObject;
+
+	if (lengthString != nil) {
+		bool invalid = false;
+
+		@try {
+			generator.length = (size_t)lengthString.decimalValue;
+		} @catch (OFInvalidFormatException *e) {
+			invalid = true;
+		} @catch (OFOutOfRangeException *e) {
+			invalid = true;
+		}
+
+		if (invalid) {
+			[of_stderr writeFormat:
+			    @"%@: Invalid length: %@\n",
+			    [OFApplication programName], lengthString];
+
+			[OFApplication terminateWithStatus: 1];
+		}
+	}
+
+	prompt = [OFString stringWithFormat: @"Passphrase for site \"%@\": ",
+					     generator.site];
+	promptCString = [prompt cStringWithEncoding: [OFLocale encoding]];
+
+	if (keyFilePath != nil)
+		keyFile = [OFMutableData dataWithContentsOfFile: keyFilePath];
+
+	passphrase = getpass(promptCString);
+	@try {
+		if (_repeat) {
+			char *passphraseCopy = of_strdup(passphrase);
+
+			if (passphraseCopy == NULL)
+				@throw [OFOutOfMemoryException exception];
+
+			@try {
+				of_string_encoding_t encoding =
+				    [OFLocale encoding];
+
+				prompt = [OFString stringWithFormat:
+				    @"Repeat passphrase for site \"%@\": ",
+				    generator.site];
+				passphrase = getpass(
+				    [prompt cStringWithEncoding: encoding]);
+
+				if (strcmp(passphrase, passphraseCopy) != 0) {
+					[of_stderr writeString:
+					    @"Passphrases do not match!\n"];
+					[OFApplication terminateWithStatus: 1];
+				}
+			} @finally {
+				of_explicit_memset(passphraseCopy, 0,
+				    strlen(passphraseCopy));
+				free(passphraseCopy);
+			}
+		}
+
+		generator.keyFile = keyFile;
+		generator.passphrase = passphrase;
+
+		[generator derivePassword];
+		@try {
+			[of_stdout writeBuffer: generator.output
+					length: generator.length];
+			[of_stdout writeBuffer: "\n"
+					length: 1];
+		} @finally {
+			of_explicit_memset(generator.output, 0,
+			    generator.length);
+		}
+	} @finally {
+		of_explicit_memset(passphrase, 0, strlen(passphrase));
+
+		if (keyFile != nil)
+			of_explicit_memset(keyFile.mutableItems, 0,
+			    keyFile.count);
+	}
+
+	[OFApplication terminate];
+}
+@end