Add initial iOS application

This is already in a working state, but is still missing a few things. For example, there is no proper progress indication during generation and the UI just hangs and there's no way to delete a site yet.
2016-10-09 17:53:41 +02:00 · 2016-10-09 17:53:41 +02:00 · 43adab7b39
commit 43adab7b39
parent aae80c85e1
17 changed files with 1735 additions and 0 deletions
--- a/iOS/ShowDetailsController.m
+++ b/iOS/ShowDetailsController.m
@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2016, Jonathan Schleifer <js@heap.zone>
+ *
+ * https://heap.zone/git/?p=scrypt-pwgen.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.
+ */
+
+@import ObjFW;
+@import ObjFW_Bridge;
+
+#import "ShowDetailsController.h"
+
+#import "SiteStorage.h"
+#import "PasswordGenerator.h"
+#import "NewPasswordGenerator.h"
+#import "LegacyPasswordGenerator.h"
+
+@interface ShowDetailsController ()
+- (NSMutableString*)_generate;
+- (void)_generateAndCopy;
+- (void)_generateAndShow;
+@end
+
+static void
+clearNSMutableString(NSMutableString *string)
+{
+	/*
+	 * NSMutableString does not offer a way to zero the string.
+	 * This is in the hope that setting a single character at an index just
+	 * replaces that character in memory, and thus allows us to zero the
+	 * password.
+	 */
+	for (NSUInteger i = 0 ; i < string.length; i++)
+		[string replaceCharactersInRange: NSMakeRange(i, 1)
+				      withString: @" "];
+}
+
+@implementation ShowDetailsController
+- (void)dealloc
+{
+	[_name release];
+	[_nameField release];
+	[_lengthField release];
+	[_legacySwitch release];
+	[_passphraseField release];
+
+	[super dealloc];
+}
+
+- (void)viewWillAppear: (BOOL)animated
+{
+	SiteStorage *siteStorage = self.mainViewController.siteStorage;
+	NSInteger row =
+	    self.mainViewController.tableView.indexPathForSelectedRow.row;
+
+	[_name release];
+	_name = [siteStorage.sites[row] retain];
+	_length = [siteStorage lengthForSite: _name];
+	_legacy = [siteStorage isSiteLegacy: _name];
+
+	self.nameField.text = [_name NSObject];
+	self.lengthField.text = [NSString stringWithFormat: @"%zu", _length];
+	self.legacySwitch.enabled = _legacy;
+}
+
+- (void)viewDidAppear: (BOOL)animated
+{
+	[self.passphraseField becomeFirstResponder];
+}
+
+- (BOOL)textFieldShouldReturn: (UITextField*)textField
+{
+	[textField resignFirstResponder];
+	return NO;
+}
+
+-	  (void)tableView: (UITableView*)tableView
+  didSelectRowAtIndexPath: (NSIndexPath*)indexPath
+{
+	[self.passphraseField resignFirstResponder];
+	[tableView deselectRowAtIndexPath: indexPath
+				 animated: YES];
+
+	if (indexPath.section == 3) {
+		switch (indexPath.row) {
+		case 0:
+			[self _generateAndCopy];
+			break;
+		case 1:
+			[self _generateAndShow];
+			break;
+		}
+	}
+}
+
+- (void)_generateAndCopy
+{
+	NSMutableString *password = [self _generate];
+
+	UIPasteboard *pasteBoard = [UIPasteboard generalPasteboard];
+	pasteBoard.string = password;
+
+	clearNSMutableString(password);
+
+	UIAlertController *alert = [UIAlertController
+	    alertControllerWithTitle: @"Password Generated"
+			     message: @"The password has been copied into the "
+				      @"clipboard."
+		      preferredStyle: UIAlertControllerStyleAlert];
+	[alert addAction:
+	    [UIAlertAction actionWithTitle: @"OK"
+				     style: UIAlertActionStyleDefault
+				   handler: nil]];
+
+	[self presentViewController: alert
+			   animated: YES
+			 completion: nil];
+}
+
+- (void)_generateAndShow
+{
+	NSMutableString *password = [self _generate];
+
+	UIAlertController *alert = [UIAlertController
+	    alertControllerWithTitle: @"Generated Passphrase"
+			     message: password
+		      preferredStyle: UIAlertControllerStyleAlert];
+	[alert addAction:
+	    [UIAlertAction actionWithTitle: @"OK"
+				     style: UIAlertActionStyleDefault
+				   handler: nil]];
+
+	[self presentViewController: alert
+			   animated: YES
+			 completion:  ^ {
+		clearNSMutableString(password);
+	}];
+}
+
+- (NSMutableString*)_generate
+{
+	id <PasswordGenerator> generator;
+	char *passphrase;
+
+	if (_legacy)
+		generator = [LegacyPasswordGenerator generator];
+	else
+		generator = [NewPasswordGenerator generator];
+
+	generator.site = _name;
+	generator.length = _length;
+
+	passphrase = of_strdup([self.passphraseField.text UTF8String]);
+	@try {
+		self.passphraseField.text = @"";
+		generator.passphrase = passphrase;
+
+		[generator derivePassword];
+	} @finally {
+		of_explicit_memset(passphrase, 0, strlen(passphrase));
+		free(passphrase);
+	}
+
+	NSMutableString *password = [NSMutableString
+	    stringWithUTF8String: (char*)generator.output];
+	of_explicit_memset(generator.output, 0,
+	    strlen((char*)generator.output));
+
+	return password;
+}
+@end