Base64

Header file

#include "mln_base64.h"

Module

base64

Functions

mln_base64_encode

int mln_base64_encode(mln_u8ptr_t in, mln_uauto_t inlen, mln_u8ptr_t *out, mln_uauto_t *outlen);

Description: Base64 encode what in and inlen refer to, and write the result to out and outlen. Among them, the result in out is allocated by calling malloc in the function, and it needs to be released with mln_base64_free after use.

Note: mln_u8ptr_t is a pointer type, while mln_u8ptr_t * is a secondary pointer.

Return value: return 0 if successful, otherwise return -1

mln_base64_pool_encode

int mln_base64_pool_encode(mln_alloc_t *pool, mln_u8ptr_t in, mln_uauto_t inlen, mln_u8ptr_t *out, mln_uauto_t *outlen);

Description: Base64 encode what in and inlen refer to, and write the result to out and outlen. Among them, the result in out is allocated from the memory pool pool, and needs to be released using mln_base64_pool_free after use.

Return value: return 0 if successful, otherwise return -1

mln_base64_decode

int mln_base64_decode(mln_u8ptr_t in, mln_uauto_t inlen, mln_u8ptr_t *out, mln_uauto_t *outlen);

Description: Base64 decode what in and inlen refer to, and write the decoded result to out and outlen. Among them, the result in out is allocated by calling malloc in the function, and it needs to be released with mln_base64_free after use.

Return value: return 0 if successful, otherwise return -1

mln_base64_pool_decode

int mln_base64_pool_decode(mln_alloc_t *pool, mln_u8ptr_t in, mln_uauto_t inlen, mln_u8ptr_t *out, mln_uauto_t *outlen);

Description: Base64 decode what in and inlen refer to, and write the decoded result to out and outlen. Among them, the result in out is allocated by calling malloc in the function, and it needs to be released with mln_base64_pool_free after use.

Return value: return 0 if successful, otherwise return -1

mln_base64_free

void mln_base64_free(mln_u8ptr_t data);

Description: Free the memory space pointed to by the out parameter in mln_base64_encode and mln_base64_decode.

Return value: none

mln_base64_pool_free

void mln_base64_pool_free(mln_u8ptr_t data);

Description: Free the memory space pointed to by the out parameter in mln_base64_pool_encode and mln_base64_pool_decode.

Return value: none

Example

#include <stdio.h>
#include <stdlib.h>
#include "mln_string.h"
#include "mln_base64.h"

int main(int argc, char *argv[])
{
    mln_string_t text = mln_string("Hello");
    mln_string_t tmp;
    mln_u8ptr_t p1, p2;
    mln_uauto_t len1, len2;

    if (mln_base64_encode(text.data, text.len, &p1, &len1) < 0) {
        fprintf(stderr, "encode failed\n");
        return -1;
    }
    mln_string_nset(&tmp, p1, len1);
    write(STDOUT_FILENO, tmp.data, tmp.len);
    write(STDOUT_FILENO, "\n", 1);

    if (mln_base64_decode(p1, len1, &p2, &len2) < 0) {
        fprintf(stderr, "decode failed\n");
        return -1;
    }
    mln_string_nset(&tmp, p2, len2);
    write(STDOUT_FILENO, tmp.data, tmp.len);
    write(STDOUT_FILENO, "\n", 1);

    mln_base64_free(p1);
    mln_base64_free(p2);

    return 0;
}