base64.h File Reference

Base64 utility functions. More...

Functions
static size_t	spdk_base64_get_encoded_strlen (size_t raw_len)
	Following the Base64 part in RFC4648: https://tools.ietf.org/html/rfc4648.html.
static size_t	spdk_base64_get_decoded_len (size_t encoded_strlen)
	Calculate length of raw buffer based on strlen of encoded Base64.
int	spdk_base64_encode (char *dst, const void *src, size_t src_len)
	Base 64 Encoding with Standard Base64 Alphabet defined in RFC4684.
int	spdk_base64_urlsafe_encode (char *dst, const void *src, size_t src_len)
	Base 64 Encoding with URL and Filename Safe Alphabet.
int	spdk_base64_decode (void *dst, size_t *dst_len, const char *src)
	Base 64 Decoding with Standard Base64 Alphabet defined in RFC4684.
int	spdk_base64_urlsafe_decode (void *dst, size_t *dst_len, const char *src)
	Base 64 Decoding with URL and Filename Safe Alphabet.

Detailed Description

Base64 utility functions.

Function Documentation

spdk_base64_decode()

int spdk_base64_decode	(	void *	dst,
		size_t *	dst_len,
		const char *	src )

Base 64 Decoding with Standard Base64 Alphabet defined in RFC4684.

Parameters

dst	Buffer address of decoded raw data. Its length should be enough to contain decoded raw data, so it needs to be at least as long as spdk_base64_get_decoded_len(encoded_strlen). If NULL, only dst_len will be populated indicating the exact decoded length.
dst_len	Output parameter for the length of actual decoded raw data. If NULL, the actual decoded length won't be returned.
src	Data buffer for base64 string to be decoded.

Returns

0 on success.

-EINVAL if src is NULL, or content of src is illegal.

spdk_base64_encode()

int spdk_base64_encode	(	char *	dst,
		const void *	src,
		size_t	src_len )

Base 64 Encoding with Standard Base64 Alphabet defined in RFC4684.

Parameters

dst	Buffer address of encoded Base64 string. Its length should be enough to contain Base64 string and the terminating null byte ('\0'), so it needs to be at least as long as 1 + spdk_base64_get_encoded_strlen(src_len).
src	Raw data buffer to be encoded.
src_len	Length of raw data buffer.

Returns

0 on success.

-EINVAL if dst or src is NULL, or binary_len <= 0.

spdk_base64_get_decoded_len()

static size_t spdk_base64_get_decoded_len ( size_t encoded_strlen )

inlinestatic

Calculate length of raw buffer based on strlen of encoded Base64.

This length will be the max possible decoded len. The exact decoded length could be shorter depending on if there was padding in the Base64 string.

Parameters

encoded_strlen

Length of encoded Base64 string, excluding terminating null byte ('\0').

Returns

Length of raw buffer.

spdk_base64_get_encoded_strlen()

static size_t spdk_base64_get_encoded_strlen ( size_t raw_len )

inlinestatic

Following the Base64 part in RFC4648: https://tools.ietf.org/html/rfc4648.html.

Calculate strlen of encoded Base64 string based on raw buffer length.

Parameters

raw_len

Length of raw buffer.

Returns

Encoded Base64 string length, excluding the terminating null byte ('\0').

spdk_base64_urlsafe_decode()

int spdk_base64_urlsafe_decode	(	void *	dst,
		size_t *	dst_len,
		const char *	src )

Base 64 Decoding with URL and Filename Safe Alphabet.

Parameters

dst	Buffer address of decoded raw data. Its length should be enough to contain decoded raw data, so it needs to be at least as long as spdk_base64_get_decoded_len(encoded_strlen). If NULL, only dst_len will be populated indicating the exact decoded length.
dst_len	Output parameter for the length of actual decoded raw data. If NULL, the actual decoded length won't be returned.
src	Data buffer for base64 string to be decoded.

Returns

0 on success.

-EINVAL if src is NULL, or content of src is illegal.

spdk_base64_urlsafe_encode()

int spdk_base64_urlsafe_encode	(	char *	dst,
		const void *	src,
		size_t	src_len )

Base 64 Encoding with URL and Filename Safe Alphabet.

Parameters

dst	Buffer address of encoded Base64 string. Its length should be enough to contain Base64 string and the terminating null byte ('\0'), so it needs to be at least as long as 1 + spdk_base64_get_encoded_strlen(src_len).
src	Raw data buffer to be encoded.
src_len	Length of raw data buffer.

Returns

0 on success.

-EINVAL if dst or src is NULL, or binary_len <= 0.