ObjFW  Check-in [39c5a46ea5]

 * OFBigDataArray, which allocates the memory in pages rather than in bytes.
 *
 * For security reasons, serialization and deserialization is only implemented
 * for OFDataArrays with item size 1.
 */
@interface OFDataArray: OFObject <OFCopying, OFComparing, OFSerialization>
{
	uint8_t *data;
	size_t count;
	size_t itemSize;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, getter=cArray) void *data;
@property (readonly) size_t count;

 *	  of the specified URL.
 *
 * \param URL The URL to the contents for the OFDataArray
 * \return A new autoreleased OFDataArray
 */
+ dataArrayWithContentsOfURL: (OFURL*)URL;

/**
 * \brief Creates a new OFDataArray with an item size of 1, containing the data
 *	  of the string representation.
 *
 * \param string The string representation of the data
 * \return A new autoreleased OFDataArray
 */
+ dataArrayWithStringRepresentation: (OFString*)string;

/**
 * \brief Creates a new OFDataArray with an item size of 1, containing the data
 *	  of the Base64-encoded string.
 *
 * \param string The string with the Base64-encoded data
 * \return A new autoreleased OFDataArray
 */

 *	  containing the data of the specified URL.
 *
 * \param URL The URL to the contents for the OFDataArray
 * \return A new autoreleased OFDataArray
 */
- initWithContentsOfURL: (OFURL*)URL;

/**
 * \brief Initializes an already allocated OFDataArray with an item size of 1,
 *	  containing the data of the string representation.
 *
 * \param string The string representation of the data
 * \return A new autoreleased OFDataArray
 */
- initWithStringRepresentation: (OFString*)string;

/**
 * \brief Initializes an already allocated OFDataArray with an item size of 1,
 *	  containing the data of the Base64-encoded string.
 *
 * \param string The string with the Base64-encoded data
 * \return A initialized OFDataArray
 */

- (void)removeLastItem;

/**
 * \brief Removes all items.
 */
- (void)removeAllItems;

/**
 * \brief Returns the string representation of the data array.
 *
 * \return The string representation of the data array.
 */
- (OFString*)stringRepresentation;

/**
 * \brief Returns a string containing the data in Base64 encoding.
 *
 * \return A string containing the data in Base64 encoding
 */
- (OFString*)stringByBase64Encoding;

#import "OFFile.h"
#import "OFURL.h"
#import "OFHTTPRequest.h"
#import "OFXMLElement.h"

#import "OFHTTPRequestFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFNotImplementedException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"

#import "autorelease.h"
#import "base64.h"
#import "macros.h"

	return [[[self alloc] initWithContentsOfFile: path] autorelease];
}

+ dataArrayWithContentsOfURL: (OFURL*)URL
{
	return [[[self alloc] initWithContentsOfURL: URL] autorelease];
}

+ dataArrayWithStringRepresentation: (OFString*)string
{
	return [[[self alloc]
	    initWithStringRepresentation: string] autorelease];
}

+ dataArrayWithBase64EncodedString: (OFString*)string
{
	return [[[self alloc] initWithBase64EncodedString: string] autorelease];
}

- init

			       request: request
				result: result];

	self = [[result data] retain];
	objc_autoreleasePoolPop(pool);
	return self;
}

- initWithStringRepresentation: (OFString*)string
{
	self = [super init];

	@try {
		const char *cString;
		size_t i;

		itemSize = 1;
		count = [string UTF8StringLength];

		if (count & 1)
			@throw [OFInvalidFormatException
			    exceptionWithClass: [self class]];

		count >>= 1;
		cString = [string UTF8String];
		data = [self allocMemoryWithSize: count];

		for (i = 0; i < count; i++) {
			uint8_t c1 = cString[2 * i];
			uint8_t c2 = cString[2 * i + 1];
			uint8_t byte;

			if (c1 >= '0' && c1 <= '9')
				byte = (c1 - '0') << 4;
			else if (c1 >= 'a' && c1 <= 'f')
				byte = (c1 - 'a' + 10) << 4;
			else if (c1 >= 'A' && c1 <= 'F')
				byte = (c1 - 'A' + 10) << 4;
			else
				@throw [OFInvalidFormatException
				    exceptionWithClass: [self class]];

			if (c2 >= '0' && c2 <= '9')
				byte |= c2 - '0';
			else if (c2 >= 'a' && c2 <= 'f')
				byte |= c2 - 'a' + 10;
			else if (c2 >= 'A' && c2 <= 'F')
				byte |= c2 - 'A' + 10;
			else
				@throw [OFInvalidFormatException
				    exceptionWithClass: [self class]];

			data[i] = byte;
		}
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithBase64EncodedString: (OFString*)string
{
	self = [super init];

	@try {
		itemSize = 1;

		if (!of_base64_decode(self, [string cStringWithEncoding:
		    OF_STRING_ENCODING_ASCII], [string
		    cStringLengthWithEncoding: OF_STRING_ENCODING_ASCII])) {
			Class c = [self class];
			[self release];
			@throw [OFInvalidFormatException exceptionWithClass: c];
		}
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- initWithSerialization: (OFXMLElement*)element
{

		stringValue = [element stringValue];

		if (!of_base64_decode(self,
		    [stringValue cStringWithEncoding: OF_STRING_ENCODING_ASCII],
		    [stringValue cStringLengthWithEncoding:
		    OF_STRING_ENCODING_ASCII]))
			@throw [OFInvalidFormatException
			    exceptionWithClass: [self class]];

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

		for (j = 0; j < itemSize; j++)
			[ret appendFormat: @"%02x", data[i * itemSize + j]];
	}

	[ret appendString: @">"];

	[ret makeImmutable];
	return ret;
}

- (OFString*)stringRepresentation
{
	OFMutableString *ret = [OFMutableString string];
	size_t i, j;

	for (i = 0; i < count; i++)
		for (j = 0; j < itemSize; j++)
			[ret appendFormat: @"%02x", data[i * itemSize + j]];

	[ret makeImmutable];
	return ret;
}

- (OFString*)stringByBase64Encoding
{
	return of_base64_encode(data, count * itemSize);

@class OFString;
@class OFDataArray;

#ifdef __cplusplus
extern "C" {
#endif
extern const char of_base64_table[64];
extern OFString *of_base64_encode(const void*, size_t);
extern BOOL of_base64_decode(OFDataArray*, const char*, size_t);
#ifdef __cplusplus
}
#endif

	 3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
	20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30,
	31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
	48, 49, 50, 51, -1, -1, -1, -1, -1
};

OFString*
of_base64_encode(const void *data, size_t length)
{
	OFMutableString *ret = [OFMutableString string];
	uint8_t *buffer = (uint8_t*)data;
	size_t i;
	uint8_t rest;
	char tb[4];
	uint32_t sb;