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libwget-base64(3) wget2 libwget-base64(3)

NAME

libwget-base64 - Base64 functions

SYNOPSIS

Functions


bool wget_base64_is_string (const char *src)
size_t wget_base64_decode (char *dst, const char *src, size_t n)
char * wget_base64_decode_alloc (const char *src, size_t n, size_t *outlen)
size_t wget_base64_encode (char *dst, const char *src, size_t n)
char * wget_base64_encode_alloc (const char *src, size_t n)
char * wget_base64_encode_vprintf_alloc (const char *fmt, va_list args)
char * wget_base64_encode_printf_alloc (const char *fmt,...)

Detailed Description

This is a collection base64 encoding/decoding functions used in Wget2.

Function Documentation

bool wget_base64_is_string (const char * src)

Parameters

src String to be checked

Returns

1 if src is a base64 string, 0 otherwise

Checks whether src is a base64 string. Returns 0 if src is NULL.

size_t wget_base64_decode (char * dst, const char * src, size_t n)

Parameters

dst Output buffer
src Base64 string to be decoded
n Length of src

Returns

Number of bytes written into dst

Decodes n bytes of the base64 string src. The decoded bytes are written into dst and are 0-terminated.

The size of dst has to be at minimum ((n + 3) / 4) * 3 + 1 bytes.

char* wget_base64_decode_alloc (const char * src, size_t n, size_t * outlen)

Parameters

src Base64 string to be decoded
n Length of src
outlen Length of returned string, may be NULL.

Returns

Decoded bytes, zero terminated

Decodes n bytes of the base64 string src. The decoded bytes are returned in an allocated buffer.

You should free() the returned string when not needed any more.

size_t wget_base64_encode (char * dst, const char * src, size_t n)

Parameters

dst Base64 output string
src Input buffer
n Number of bytes to be encoded

Returns

Length of output string dst

Encodes n bytes from src into a base64 string. The encoded string is written into dst (0-terminated).

The length of dst has to be at minimum ((n + 2) / 3) * 4 + 1 bytes.

char* wget_base64_encode_alloc (const char * src, size_t n)

Parameters

src Input buffer
n Number of bytes to be encoded

Returns

Base64 encoded string

Encodes n bytes from input buffer src. The encoded string is returned in an allocated buffer.

You should free() the returned string when not needed any more.

char* wget_base64_encode_vprintf_alloc (const char * fmt, va_list args)

Parameters

fmt Printf-like format string
args Argument list

Returns

Base64 encoded string

Encodes the string constructed by fmt and args. The encoded string is returned in an allocated buffer.

You should free() the returned string when not needed any more.

char* wget_base64_encode_printf_alloc (const char * fmt, ...)

Parameters

fmt Printf-like format string
... Argument list

Returns

Base64 encoded string

Encodes the string constructed by fmt and the arguments. The encoded string is returned in an allocated buffer.

You should free() the returned string when not needed any more.

Author

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Tue Jan 26 2021 Version 1.99.1