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ServiceProvider.m
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ServiceProvider.m
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//
// ServiceProvider.m
// Base64Anywhere
//
#import "ServiceProvider.h"
#import "AppDelegate.h"
@implementation ServiceProvider
@synthesize appController;
-(void)setLineBreakMode:(NSLineBreakMode)mode forView:(NSTextView*)view
{
NSTextStorage *storage = [view textStorage];
NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setLineBreakMode:mode];
[storage addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, [storage length])];
}
-(void)setEncodedText:(NSString*)string
{
[appController.encodedTextView setString:string];
[self setLineBreakMode: NSLineBreakByCharWrapping forView:appController.encodedTextView];
[appController.encodedTextView scrollToBeginningOfDocument:self];
[appController.encodedTextView setEditable:NO];
}
//This is code that will be used when this thing actually supports base64 encoding files.
- (void) EncodeFile: (NSPasteboard*) pasteboard : (NSString*) error
{
NSString* PBoardString = [[pasteboard stringForType: NSFilenamesPboardType] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
if( !PBoardString )
{
return;
}
//This gives you a plist style string with your filename that looks like this:
/* <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
<string>/Users/homedirectory/Desktop/IMG_1783.jpg</string>
</array>
</plist> */
const char* pboardcstring = [PBoardString UTF8String];
if( !pboardcstring )
{
return;
}
NSInteger len = strlen(pboardcstring);
NSData* plistData = [[NSData alloc] initWithBytes:pboardcstring length:len];
NSPropertyListReadOptions read_options = 0;
NSError* deserializationError = NULL;
NSArray* fileArray = (NSArray*)[NSPropertyListSerialization propertyListWithData:plistData options:read_options format:nil error:&deserializationError];
if( deserializationError )
{
return;
}
if( !fileArray )
{
return;
}
if( [fileArray count] <=0 )
{
return;
}
[appController startEncodeFileRequest];
[appController taskStarted];
NSBlockOperation *operation = [NSBlockOperation blockOperationWithBlock:^{
[self encodeFiles:fileArray];
}];
[[NSOperationQueue mainQueue] addOperation:operation];
}
- (void) EncodeText: (NSPasteboard*) pasteboard : (NSString*) error
{
if( !appController )
return;
NSString* toEncode = [pasteboard stringForType:NSPasteboardTypeString];
[appController startEncodeRequest];
[appController.plainTextView setString:toEncode];
NSThread* thread = [[NSThread alloc] initWithTarget:self selector:@selector(encode:) object:pasteboard];
[thread start];
return;
}
- (void) EncodeTextReturn: (NSPasteboard*) pasteboard : (NSString*) error
{
if( !appController )
return;
NSString* toEncode = [pasteboard stringForType:NSPasteboardTypeString];
[appController startEncodeRequest];
[appController.plainTextView setString:toEncode];
NSThread* thread = [[NSThread alloc] initWithTarget:self selector:@selector(encode:) object:pasteboard];
[thread start];
}
-(NSString*)removeAllWhiteSpace:(NSString*)original
{
NSCharacterSet *whitespaces = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSArray *parts = [original componentsSeparatedByCharactersInSet:whitespaces];
NSString* rval = [parts componentsJoinedByString:@""];
return rval;
}
- (void) DecodeText: (NSPasteboard*) pasteboard : (NSString*) error
{
if( !appController )
return;
[appController startDecodeRequest];
NSString* pboardString = [pasteboard stringForType:NSPasteboardTypeString];
NSString* noWhitespace = [self removeAllWhiteSpace:pboardString];
[self setEncodedText:noWhitespace];
NSString* rval = [self decode:noWhitespace];
[appController.window makeKeyAndOrderFront:self];
[appController.window orderFrontRegardless];
[appController.plainTextView setString:rval];
[appController.plainTextView scrollToBeginningOfDocument:self];
[appController.plainTextView setEditable:NO];
[self writeResultToClipBoard:pasteboard Result:rval];
return;
}
- (void) DecodeTextReturn: (NSPasteboard*) pasteboard : (NSString*) error
{
if( !appController )
return;
[appController startDecodeRequest];
NSString* pboardString = [pasteboard stringForType:NSPasteboardTypeString];
NSString* noWhitespace = [self removeAllWhiteSpace:pboardString];
NSString* rval = [self decode:noWhitespace];
[self writeResultToClipBoard:pasteboard Result:rval];
}
- (void) writeResultToClipBoard:(NSPasteboard *)pboard Result:(NSString*)result
{
[pboard clearContents];
[pboard writeObjects:[NSArray arrayWithObject:result]];
}
-(NSString*)decode:(NSString*)toDecode
{
NSMutableString* rval = nil;
CFDataRef dataToDecode = (__bridge CFDataRef)[toDecode dataUsingEncoding:NSUTF8StringEncoding];
CFErrorRef error = NULL;
appController.textToDecode = toDecode;
SecTransformRef encodingRef = SecDecodeTransformCreate(kSecBase64Encoding, &error );
SecTransformSetAttribute(encodingRef, kSecTransformInputAttributeName, dataToDecode, &error );
CFDataRef resultData = SecTransformExecute(encodingRef,&error);
rval = [[NSMutableString alloc] initWithBytes:CFDataGetBytePtr(resultData)
length:CFDataGetLength(resultData)
encoding:NSUTF8StringEncoding];
if ( !rval )
{
appController.isDecodedHex = YES;
rval = [[NSMutableString alloc] initWithCapacity:(CFDataGetLength(resultData) * 5)+1];
/* It wasn't representable in UTF8 Encoding, probably contains at least some non printable data,
* let's show a hex representation of the data..... */
for( int i = 0; i < CFDataGetLength(resultData); i++)
{
int curr = CFDataGetBytePtr(resultData)[i];
if( i == 0 )
[rval appendFormat:@"0x%02x", curr];
else
[rval appendFormat:@" 0x%02x", curr];
}
}
else
{
appController.isDecodedHex = NO;
}
NSData* decoded = [NSData dataWithData:CFBridgingRelease(resultData)];
[appController finishedDecodeRequest:decoded];
CFRelease(encodingRef);
return rval;
}
-(void)finishedEncodingText:(NSString*)text
{
[appController.window makeKeyAndOrderFront:self];
[appController.window orderFrontRegardless];
[appController.plainTextView scrollToBeginningOfDocument:self];
[appController.plainTextView setEditable:NO];
[self setEncodedText:text];
[appController finishedEncodeRequest];
appController.isDecodedHex = NO;
}
-(NSData*)convertHexStringToBytes:(NSString*)hexString
{
hexString = [hexString stringByReplacingOccurrencesOfString:@" " withString:@""];
NSMutableData *rval = [[NSMutableData alloc] init];
unsigned char whole_byte;
char byte_chars[3] = {'\0','\0','\0'};
int i;
for (i=0; i < [hexString length]/2; i++)
{
byte_chars[0] = [hexString characterAtIndex:i*2];
byte_chars[1] = [hexString characterAtIndex:i*2+1];
whole_byte = strtol(byte_chars, NULL, 16);
[rval appendBytes:&whole_byte length:1];
}
return rval;
}
-(void)encode:(NSPasteboard*)pasteboard
{
NSString* toEncode = [pasteboard stringForType:NSPasteboardTypeString];
NSString* rval = nil;
BOOL treatAsHexString = NO;
CFDataRef dataToEncode = nil;
//TODO: add some UI and or smarts to switch this flag back and forth
if( treatAsHexString )
dataToEncode = (__bridge CFDataRef)[self convertHexStringToBytes:toEncode];
else
dataToEncode = (__bridge CFDataRef)[toEncode dataUsingEncoding:NSUTF8StringEncoding];
CFErrorRef error = NULL;
SecTransformRef encodingRef = SecEncodeTransformCreate(kSecBase64Encoding, &error );
SecTransformSetAttribute(encodingRef, kSecTransformInputAttributeName, dataToEncode, &error );
CFDataRef resultData = SecTransformExecute(encodingRef,&error);
rval = [[NSString alloc] initWithBytes:CFDataGetBytePtr(resultData)
length:CFDataGetLength(resultData)
encoding:NSUTF8StringEncoding];
CFRelease(resultData);
CFRelease(encodingRef);
[self performSelectorOnMainThread:@selector(finishedEncodingText:) withObject:rval waitUntilDone:NO];
[self writeResultToClipBoard:pasteboard Result:rval];
}
- (NSString*) encodeFile:(NSString*)filePath
{
NSString* rval = nil;
CFDataRef dataToEncode = (__bridge CFDataRef)[NSData dataWithContentsOfFile:filePath];
CFErrorRef error = NULL;
SecTransformRef encodingRef = SecEncodeTransformCreate(kSecBase64Encoding, &error );
SecTransformSetAttribute(encodingRef, kSecTransformInputAttributeName, dataToEncode, &error );
CFDataRef resultData = SecTransformExecute(encodingRef,&error);
rval = [[NSString alloc] initWithBytes:CFDataGetBytePtr(resultData)
length:CFDataGetLength(resultData)
encoding:NSUTF8StringEncoding];
CFRelease(resultData);
CFRelease(encodingRef);
return rval;
}
- (void)encodingFilesFinished:(NSString*)text
{
appController.isDecodedHex = NO;
[appController.window makeKeyAndOrderFront:self];
[appController.window orderFrontRegardless];
[self setEncodedText:text];
[appController taskFinished];
}
- (void)sendFileFinishedNotification:(NSString*)file
{
[appController finishedEncodeFileRequest:file];
}
- (void) encodeFiles:(NSArray*)fileArray
{
NSString* rval = nil;
NSString* file = [fileArray objectAtIndex:0];
if( ![[NSFileManager defaultManager] fileExistsAtPath:file] )
{
rval = [[NSString alloc] initWithFormat:@"ERROR: File at path %@, doesn't exist",file];
}
else
{
NSDictionary* dict = [[NSFileManager defaultManager] attributesOfItemAtPath:file error:nil];
if( !dict )
{
rval = [[NSString alloc] initWithFormat:@"ERROR: Unable to get attributes for file: %@",file];
}
if( [dict fileSize] > 30000000 )
{
rval = [[NSString alloc] initWithFormat:@"ERROR: File is too large!"];
}
}
if( rval == nil )
{
rval = [self encodeFile:file];
}
[self performSelectorOnMainThread:@selector(encodingFilesFinished:) withObject:rval waitUntilDone:NO];
[self performSelectorOnMainThread:@selector(sendFileFinishedNotification:) withObject:file waitUntilDone:NO];
}
@end