int
PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm,
const char *name, BIO *bp, pem_password_cb *cb, void *u)
{
EVP_CIPHER_INFO cipher;
char *nm = NULL, *header = NULL;
unsigned char *data = NULL;
long len;
int ret = 0;
for (;;) {
if (!PEM_read_bio(bp, &nm, &header, &data, &len)) {
if (ERR_GET_REASON(ERR_peek_error()) ==
PEM_R_NO_START_LINE)
ERR_asprintf_error_data("Expecting: %s", name);
return 0;
}
if (check_pem(nm, name))
break;
free(nm);
free(header);
free(data);
}
if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
goto err;
if (!PEM_do_header(&cipher, data, &len, cb, u))
goto err;
*pdata = data;
*plen = len;
if (pnm)
*pnm = nm;
ret = 1;
err:
if (!ret || !pnm)
free(nm);
free(header);
if (!ret)
free(data);
return ret;
}
static int pem_bytes_read_bio_flags(unsigned char **pdata, long *plen,
char **pnm, const char *name, BIO *bp,
pem_password_cb *cb, void *u,
unsigned int flags)
{
EVP_CIPHER_INFO cipher;
char *nm = NULL, *header = NULL;
unsigned char *data = NULL;
long len = 0;
int ret = 0;
do {
pem_free(nm, flags, 0);
pem_free(header, flags, 0);
pem_free(data, flags, len);
if (!PEM_read_bio_ex(bp, &nm, &header, &data, &len, flags)) {
if (ERR_GET_REASON(ERR_peek_error()) == PEM_R_NO_START_LINE)
ERR_add_error_data(2, "Expecting: ", name);
return 0;
}
} while (!check_pem(nm, name));
if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
goto err;
if (!PEM_do_header(&cipher, data, &len, cb, u))
goto err;
*pdata = data;
*plen = len;
if (pnm != NULL)
*pnm = nm;
ret = 1;
err:
if (!ret || pnm == NULL)
pem_free(nm, flags, 0);
pem_free(header, flags, 0);
if (!ret)
pem_free(data, flags, len);
return ret;
}
