UTILS

Various useful helper functions. More...

Functions
char *	_lc (char *in)
	Convert a char array to lowercase. More...
long int	_findoffset (byte *bin, size_t binlen, char *sigstart, size_t hlen)
	Find the offset of some offset marker in some arbitrary data. More...
void	_xorbuf (byte *iv, byte *buf, size_t xlen)
	XOR an input buffer with another buffer. More...
void	_dump (char *n, byte *d, size_t s)
	Dump binary data as hex to stderr. More...

Detailed Description

Various useful helper functions.

Function Documentation

void _dump	(	char *	n,
		byte *	d,
		size_t	s
	)

Dump binary data as hex to stderr.

Parameters

[in]	n	Description, string.
[in]	d	Data to print.
[in]	s	Size of d.

long int _findoffset	(	byte *	bin,
		size_t	binlen,
		char *	sigstart,
		size_t	hlen
	)

Find the offset of some offset marker in some arbitrary data.

Sample input:

ABABABABnacl-98a7sd98a7das98d7

If you look for the offset of "nacl" within that data, the function will return 9, which is the position within the data where the marker starts.

Parameters

[in]	bin	Aribrary data where to look for the marker.
[in]	binlen	The size of the data.
[in]	sigstart	The offset marker.
[in]	hlen	Size of the offset marker.

Returns

Returns the offset or -1 of the offset were not found.

char* _lc

(

char *

in

)

Convert a char array to lowercase.

The supplied char array will be directly modified. Use a copy if you want to retain the original.

Parameters

[in,out]

in

The char array to convert.

Returns

Returns the pointer to the char array.

void _xorbuf	(	byte *	iv,
		byte *	buf,
		size_t	xlen
	)

XOR an input buffer with another buffer.

Both buffers have to have the same size. The input buffer will bei modified directly.

Parameters

[in]	iv	The buffer to XOR with.
[in,out]	buf	The buffer which will be XORed with 'iv'.
[in]	xlen	The size of the buffers (they must have the same size).