+ if (ret > 0) {
+ /* *readbytes should always be <= dlen */
+ ret = (int)readbytes;
+ }
+
+ return ret;
+}
+
+int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+ int ret;
+
+ ret = bio_read_intern(b, data, dlen, readbytes);
+
+ if (ret > 0)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+static int bio_write_intern(BIO *b, const void *data, size_t dlen,
+ size_t *written)
+{
+ int ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->bwrite == NULL)) {
+ BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if ((b->callback != NULL || b->callback_ex != NULL) &&
+ ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L,
+ NULL)) <= 0))
+ return ret;
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bwrite(b, data, dlen, written);
+
+ if (ret > 0)
+ b->num_write += (uint64_t)*written;
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data,
+ dlen, 0, 0L, ret, written);
+
+ return ret;
+}
+
+int BIO_write(BIO *b, const void *data, int dlen)
+{
+ size_t written;
+ int ret;
+
+ if (dlen < 0)
+ return 0;
+
+ ret = bio_write_intern(b, data, (size_t)dlen, &written);
+
+ if (ret > 0) {
+ /* *written should always be <= dlen */
+ ret = (int)written;
+ }
+
+ return ret;
+}
+
+int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written)
+{
+ int ret;
+
+ ret = bio_write_intern(b, data, dlen, written);
+
+ if (ret > 0)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+int BIO_puts(BIO *b, const char *buf)
+{
+ int ret;
+ size_t written = 0;
+
+ if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bputs(b, buf);
+
+ if (ret > 0) {
+ b->num_write += (uint64_t)ret;
+ written = ret;
+ ret = 1;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0,
+ 0L, ret, &written);
+
+ if (ret > 0) {
+ if (written > INT_MAX) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_LENGTH_TOO_LONG);
+ ret = -1;
+ } else {
+ ret = (int)written;
+ }
+ }
+
+ return ret;
+}
+
+int BIO_gets(BIO *b, char *buf, int size)
+{
+ int ret;
+ size_t readbytes = 0;
+
+ if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (size < 0) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_INVALID_ARGUMENT);
+ return 0;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bgets(b, buf, size);
+
+ if (ret > 0) {
+ readbytes = ret;
+ ret = 1;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size,
+ 0, 0L, ret, &readbytes);
+
+ if (ret > 0) {
+ /* Shouldn't happen */
+ if (readbytes > (size_t)size)
+ ret = -1;
+ else
+ ret = (int)readbytes;
+ }
+
+ return ret;
+}
+
+int BIO_indent(BIO *b, int indent, int max)
+{
+ if (indent < 0)
+ indent = 0;
+ if (indent > max)
+ indent = max;
+ while (indent--)
+ if (BIO_puts(b, " ") != 1)
+ return 0;
+ return 1;
+}
+
+long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg)
+{
+ int i;
+
+ i = iarg;
+ return BIO_ctrl(b, cmd, larg, (char *)&i);
+}
+
+void *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
+{
+ void *p = NULL;
+
+ if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0)
+ return NULL;
+ else
+ return p;
+}
+
+long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
+{
+ long ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->ctrl == NULL)) {
+ BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ ret = b->method->ctrl(b, cmd, larg, parg);
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd,
+ larg, ret, NULL);
+
+ return ret;
+}
+
+long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+ long ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->callback_ctrl == NULL)
+ || (cmd != BIO_CTRL_SET_CALLBACK)) {
+ BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L,
+ NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ ret = b->method->callback_ctrl(b, cmd, fp);
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0,
+ cmd, 0, ret, NULL);
+
+ return ret;
+}
+
+/*
+ * It is unfortunate to duplicate in functions what the BIO_(w)pending macros
+ * do; but those macros have inappropriate return type, and for interfacing
+ * from other programming languages, C macros aren't much of a help anyway.
+ */
+size_t BIO_ctrl_pending(BIO *bio)
+{
+ return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
+}
+
+size_t BIO_ctrl_wpending(BIO *bio)
+{
+ return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
+}
+
+/* put the 'bio' on the end of b's list of operators */
+BIO *BIO_push(BIO *b, BIO *bio)
+{
+ BIO *lb;
+
+ if (b == NULL)
+ return bio;
+ lb = b;
+ while (lb->next_bio != NULL)
+ lb = lb->next_bio;
+ lb->next_bio = bio;
+ if (bio != NULL)
+ bio->prev_bio = lb;
+ /* called to do internal processing */
+ BIO_ctrl(b, BIO_CTRL_PUSH, 0, lb);
+ return b;
+}
+
+/* Remove the first and return the rest */
+BIO *BIO_pop(BIO *b)
+{
+ BIO *ret;
+
+ if (b == NULL)
+ return NULL;
+ ret = b->next_bio;
+
+ BIO_ctrl(b, BIO_CTRL_POP, 0, b);
+
+ if (b->prev_bio != NULL)
+ b->prev_bio->next_bio = b->next_bio;
+ if (b->next_bio != NULL)
+ b->next_bio->prev_bio = b->prev_bio;
+
+ b->next_bio = NULL;
+ b->prev_bio = NULL;
+ return ret;
+}
+
+BIO *BIO_get_retry_BIO(BIO *bio, int *reason)
+{
+ BIO *b, *last;
+
+ b = last = bio;
+ for (;;) {
+ if (!BIO_should_retry(b))
+ break;
+ last = b;
+ b = b->next_bio;
+ if (b == NULL)
+ break;
+ }
+ if (reason != NULL)
+ *reason = last->retry_reason;
+ return last;
+}
+
+int BIO_get_retry_reason(BIO *bio)
+{
+ return bio->retry_reason;
+}
+
+void BIO_set_retry_reason(BIO *bio, int reason)
+{
+ bio->retry_reason = reason;
+}
+
+BIO *BIO_find_type(BIO *bio, int type)
+{
+ int mt, mask;
+
+ if (bio == NULL)
+ return NULL;
+ mask = type & 0xff;
+ do {
+ if (bio->method != NULL) {
+ mt = bio->method->type;
+
+ if (!mask) {
+ if (mt & type)
+ return bio;
+ } else if (mt == type)
+ return bio;
+ }
+ bio = bio->next_bio;
+ } while (bio != NULL);
+ return NULL;
+}
+
+BIO *BIO_next(BIO *b)
+{
+ if (b == NULL)
+ return NULL;
+ return b->next_bio;
+}
+
+void BIO_set_next(BIO *b, BIO *next)
+{
+ b->next_bio = next;
+}
+
+void BIO_free_all(BIO *bio)
+{
+ BIO *b;
+ int ref;
+
+ while (bio != NULL) {
+ b = bio;
+ ref = b->references;
+ bio = bio->next_bio;
+ BIO_free(b);
+ /* Since ref count > 1, don't free anyone else. */
+ if (ref > 1)
+ break;
+ }
+}
+
+BIO *BIO_dup_chain(BIO *in)
+{
+ BIO *ret = NULL, *eoc = NULL, *bio, *new_bio;
+
+ for (bio = in; bio != NULL; bio = bio->next_bio) {
+ if ((new_bio = BIO_new(bio->method)) == NULL)
+ goto err;
+ new_bio->callback = bio->callback;
+ new_bio->callback_ex = bio->callback_ex;
+ new_bio->cb_arg = bio->cb_arg;
+ new_bio->init = bio->init;
+ new_bio->shutdown = bio->shutdown;
+ new_bio->flags = bio->flags;
+
+ /* This will let SSL_s_sock() work with stdin/stdout */
+ new_bio->num = bio->num;
+
+ if (!BIO_dup_state(bio, (char *)new_bio)) {
+ BIO_free(new_bio);
+ goto err;
+ }
+
+ /* copy app data */
+ if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_BIO, &new_bio->ex_data,
+ &bio->ex_data)) {
+ BIO_free(new_bio);
+ goto err;
+ }
+
+ if (ret == NULL) {
+ eoc = new_bio;
+ ret = eoc;
+ } else {
+ BIO_push(eoc, new_bio);
+ eoc = new_bio;
+ }
+ }
+ return ret;
+ err:
+ BIO_free_all(ret);
+
+ return NULL;
+}
+
+void BIO_copy_next_retry(BIO *b)
+{
+ BIO_set_flags(b, BIO_get_retry_flags(b->next_bio));
+ b->retry_reason = b->next_bio->retry_reason;
+}
+
+int BIO_set_ex_data(BIO *bio, int idx, void *data)
+{
+ return CRYPTO_set_ex_data(&(bio->ex_data), idx, data);
+}
+
+void *BIO_get_ex_data(BIO *bio, int idx)
+{
+ return CRYPTO_get_ex_data(&(bio->ex_data), idx);
+}
+
+uint64_t BIO_number_read(BIO *bio)
+{
+ if (bio)
+ return bio->num_read;
+ return 0;
+}
+
+uint64_t BIO_number_written(BIO *bio)
+{
+ if (bio)
+ return bio->num_write;
+ return 0;
+}
+
+void bio_free_ex_data(BIO *bio)
+{
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+}
+
+void bio_cleanup(void)
+{
+#ifndef OPENSSL_NO_SOCK
+ bio_sock_cleanup_int();
+ CRYPTO_THREAD_lock_free(bio_lookup_lock);
+ bio_lookup_lock = NULL;
+#endif
+ CRYPTO_THREAD_lock_free(bio_type_lock);
+ bio_type_lock = NULL;
+}