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#import "OFTarArchiveEntry+Private.h"
#import "OFStream.h"
#import "OFDate.h"
#import "OFOutOfRangeException.h"
static OFString *
stringFromBuffer(const char *buffer, size_t length)
stringFromBuffer(const unsigned char *buffer, size_t length)
{
for (size_t i = 0; i < length; i++)
if (buffer[i] == '\0')
length = i;
return [OFString stringWithUTF8String: buffer
return [OFString stringWithUTF8String: (const char *)buffer
length: length];
}
static void
stringToBuffer(unsigned char *buffer, OFString *string, size_t length)
{
size_t UTF8StringLength = [string UTF8StringLength];
if (UTF8StringLength > length)
@throw [OFOutOfRangeException exception];
memcpy(buffer, [string UTF8String], UTF8StringLength);
for (size_t i = UTF8StringLength; i < length; i++)
buffer[i] = '\0';
}
static uintmax_t
octalValueFromBuffer(const char *buffer, size_t length, uintmax_t max)
octalValueFromBuffer(const unsigned char *buffer, size_t length, uintmax_t max)
{
uintmax_t value;
if (length == 0)
return 0;
if (buffer[0] == 0x80) {
for (size_t i = 1; i < length; i++)
value = (value << 8) | buffer[i];
} else
uintmax_t value = [stringFromBuffer(buffer, length) octalValue];
value = [stringFromBuffer(buffer, length) octalValue];
if (value > max)
@throw [OFOutOfRangeException exception];
return value;
}
@implementation OFTarArchiveEntry
+ (instancetype)entryWithFileName: (OFString *)fileName
{
return [[[self alloc] initWithFileName: fileName] autorelease];
}
- init
{
OF_INVALID_INIT_METHOD
}
- (instancetype)of_initWithHeader: (char [512])header
- (instancetype)of_initWithHeader: (unsigned char [512])header
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
OFString *targetFileName;
_fileName = [stringFromBuffer(header, 100) copy];
_mode = (uint16_t)octalValueFromBuffer(
header + 100, 8, UINT16_MAX);
_UID = (uint16_t)octalValueFromBuffer(
header + 108, 8, UINT16_MAX);
_GID = (uint16_t)octalValueFromBuffer(
header + 116, 8, UINT16_MAX);
_mode = (uint32_t)octalValueFromBuffer(
header + 100, 8, UINT32_MAX);
_UID = (uint32_t)octalValueFromBuffer(
header + 108, 8, UINT32_MAX);
_GID = (uint32_t)octalValueFromBuffer(
header + 116, 8, UINT32_MAX);
_size = (uint64_t)octalValueFromBuffer(
header + 124, 12, UINT64_MAX);
_modificationDate = [[OFDate alloc]
initWithTimeIntervalSince1970:
(of_time_interval_t)octalValueFromBuffer(
header + 136, 12, UINTMAX_MAX)];
_type = header[156];
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}
- (OFString *)fileName
{
return _fileName;
}
- (uint16_t)mode
- (uint32_t)mode
{
return _mode;
}
- (uint16_t)UID
- (uint32_t)UID
{
return _UID;
}
- (uint16_t)GID
- (uint32_t)GID
{
return _GID;
}
- (uint64_t)size
{
return _size;
|