static int bio_free(BIO *bio)
{
struct bio_bio_st *b;
if (bio == NULL)
return 0;
b = bio->ptr;
assert(b != NULL);
if (b->peer)
bio_destroy_pair(bio);
free(b->buf);
free(b);
return 1;
}
static int bio_free(BIO *bio) {
struct bio_bio_st *b;
if (bio == NULL) {
return 0;
}
b = bio->ptr;
assert(b != NULL);
if (b->peer) {
bio_destroy_pair(bio);
}
OPENSSL_free(b->buf);
OPENSSL_free(b);
return 1;
}
static int bio_free(BIO *bio) {
struct bio_bio_st *b;
if (bio == NULL) {
return 0;
}
b = bio->ptr;
assert(b != NULL);
if (b->peer) {
bio_destroy_pair(bio);
}
if (b->buf != NULL && !b->buf_externally_allocated) {
OPENSSL_free(b->buf);
}
OPENSSL_free(b);
return 1;
}
static long bio_ctrl(BIO *bio, int cmd, long num, void *ptr)
{
long ret;
struct bio_bio_st *b = bio->ptr;
assert(b != NULL);
switch (cmd)
{
/* specific CTRL codes */
case BIO_C_SET_WRITE_BUF_SIZE:
if (b->peer)
{
BIOerr(BIO_F_BIO_CTRL, BIO_R_IN_USE);
ret = 0;
}
else if (num == 0)
{
BIOerr(BIO_F_BIO_CTRL, BIO_R_INVALID_ARGUMENT);
ret = 0;
}
else
{
size_t new_size = num;
if (b->size != new_size)
{
if (b->buf)
{
OPENSSL_free(b->buf);
b->buf = NULL;
}
b->size = new_size;
}
ret = 1;
}
break;
case BIO_C_GET_WRITE_BUF_SIZE:
ret = (long) b->size;
break;
case BIO_C_MAKE_BIO_PAIR:
{
BIO *other_bio = ptr;
if (bio_make_pair(bio, other_bio))
ret = 1;
else
ret = 0;
}
break;
case BIO_C_DESTROY_BIO_PAIR:
/* Affects both BIOs in the pair -- call just once!
* Or let BIO_free(bio1); BIO_free(bio2); do the job. */
bio_destroy_pair(bio);
ret = 1;
break;
case BIO_C_GET_WRITE_GUARANTEE:
/* How many bytes can the caller feed to the next write
* without having to keep any? */
if (b->peer == NULL || b->closed)
ret = 0;
else
ret = (long) b->size - b->len;
break;
case BIO_C_GET_READ_REQUEST:
/* If the peer unsuccessfully tried to read, how many bytes
* were requested? (As with BIO_CTRL_PENDING, that number
* can usually be treated as boolean.) */
ret = (long) b->request;
break;
case BIO_C_RESET_READ_REQUEST:
/* Reset request. (Can be useful after read attempts
* at the other side that are meant to be non-blocking,
* e.g. when probing SSL_read to see if any data is
* available.) */
b->request = 0;
ret = 1;
break;
case BIO_C_SHUTDOWN_WR:
/* similar to shutdown(..., SHUT_WR) */
b->closed = 1;
ret = 1;
break;
case BIO_C_NREAD0:
/* prepare for non-copying read */
ret = (long) bio_nread0(bio, ptr);
break;
case BIO_C_NREAD:
/* non-copying read */
ret = (long) bio_nread(bio, ptr, (size_t) num);
break;
case BIO_C_NWRITE0:
/* prepare for non-copying write */
ret = (long) bio_nwrite0(bio, ptr);
break;
case BIO_C_NWRITE:
/* non-copying write */
ret = (long) bio_nwrite(bio, ptr, (size_t) num);
break;
/* standard CTRL codes follow */
case BIO_CTRL_RESET:
if (b->buf != NULL)
{
b->len = 0;
b->offset = 0;
}
ret = 0;
break;
case BIO_CTRL_GET_CLOSE:
ret = bio->shutdown;
break;
case BIO_CTRL_SET_CLOSE:
bio->shutdown = (int) num;
ret = 1;
break;
case BIO_CTRL_PENDING:
if (b->peer != NULL)
{
struct bio_bio_st *peer_b = b->peer->ptr;
ret = (long) peer_b->len;
}
else
ret = 0;
break;
case BIO_CTRL_WPENDING:
if (b->buf != NULL)
ret = (long) b->len;
else
ret = 0;
break;
case BIO_CTRL_DUP:
/* See BIO_dup_chain for circumstances we have to expect. */
{
BIO *other_bio = ptr;
struct bio_bio_st *other_b;
assert(other_bio != NULL);
other_b = other_bio->ptr;
assert(other_b != NULL);
assert(other_b->buf == NULL); /* other_bio is always fresh */
other_b->size = b->size;
}
ret = 1;
break;
case BIO_CTRL_FLUSH:
ret = 1;
break;
case BIO_CTRL_EOF:
{
BIO *other_bio = ptr;
if (other_bio)
{
struct bio_bio_st *other_b = other_bio->ptr;
assert(other_b != NULL);
ret = other_b->len == 0 && other_b->closed;
}
else
ret = 1;
}
break;
default:
ret = 0;
}
return ret;
}
