openssl encode base64

[fakessh]

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bonjour les news

j ecris un petit client smtp et je suis confronter à encoder mes
donnees en base64

j utilise les fonctions standard openssl
ma fonction
https://github.com/fakessh/openprojectssl/blob/master/smtp_openssl.c

char *base64(char *input, int length)
{
BIO *bmem, *b64;
BUF_MEM *bptr;

b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
b64 = BIO_push(b64, bmem);
BIO_write(b64, input, length);
BIO_flush(b64);
BIO_get_mem_ptr(b64, &bptr);

char *buff = (char *)malloc(bptr->length+1);
memcpy(buff, bptr->data, bptr->length);
buff[bptr->length] = 0;

BIO_free_all(b64);

return buff;
}

malgre toute l attention que j ai mis en oeuvre pour ecrire ma fonction
cela ne fonctionne pas

pouvez vous m aidez

sincerement
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[moebius eye]

I had to do that in one of my last projects.

It was in the context of a gtk application, so I used g_base46_encode()
as described here: ( http://developer.gnome.org/glib/2.28/glib-Base64-Encoding.html )