-/*
- * ustream-ssl - library for SSL over ustream
- *
- * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <string.h>
-
-#include <libubox/ustream.h>
-
-#include "ustream-ssl.h"
-#include "ustream-internal.h"
-
-#ifdef HAVE_CYASSL_VERSION_H
-#include <cyassl/version.h>
-#else
-#define LIBCYASSL_VERSION_HEX 0
-#endif
-
-static int s_ustream_read(char *buf, int len, void *ctx)
-{
- struct ustream *s = ctx;
- char *sbuf;
- int slen;
-
- if (s->eof)
- return -3;
-
- sbuf = ustream_get_read_buf(s, &slen);
- if (slen > len)
- slen = len;
-
- if (!slen)
- return -2;
-
- memcpy(buf, sbuf, slen);
- ustream_consume(s, slen);
-
- return slen;
-}
-
-static int s_ustream_write(char *buf, int len, void *ctx)
-{
- struct ustream *s = ctx;
-
- if (s->write_error)
- return len;
-
- return ustream_write(s, buf, len, false);
-}
-
-#if (LIBCYASSL_VERSION_HEX > 0)
-static int io_recv_cb(SSL* ssl, char *buf, int sz, void *ctx)
-{
- return s_ustream_read(buf, sz, ctx);
-}
-
-static int io_send_cb(SSL* ssl, char *buf, int sz, void *ctx)
-{
- return s_ustream_write(buf, sz, ctx);
-}
-#else
-/* not defined in the header file */
-typedef int (*CallbackIORecv)(char *buf, int sz, void *ctx);
-typedef int (*CallbackIOSend)(char *buf, int sz, void *ctx);
-
-void SetCallbackIORecv_Ctx(SSL_CTX*, CallbackIORecv);
-void SetCallbackIOSend_Ctx(SSL_CTX*, CallbackIOSend);
-void SetCallbackIO_ReadCtx(SSL* ssl, void *rctx);
-void SetCallbackIO_WriteCtx(SSL* ssl, void *wctx);
-
-#define CyaSSL_SetIOReadCtx SetCallbackIO_ReadCtx
-#define CyaSSL_SetIOWriteCtx SetCallbackIO_WriteCtx
-#define CyaSSL_SetIORecv SetCallbackIORecv_Ctx
-#define CyaSSL_SetIOSend SetCallbackIOSend_Ctx
-
-static int io_recv_cb(char *buf, int sz, void *ctx)
-{
- return s_ustream_read(buf, sz, ctx);
-}
-
-static int io_send_cb(char *buf, int sz, void *ctx)
-{
- return s_ustream_write(buf, sz, ctx);
-}
-#endif
-
-__hidden void ustream_set_io(struct ustream_ssl_ctx *ctx, void *ssl, struct ustream *conn)
-{
- CyaSSL_SetIOReadCtx(ssl, conn);
- CyaSSL_SetIOWriteCtx(ssl, conn);
- CyaSSL_SetIORecv((void *) ctx, io_recv_cb);
- CyaSSL_SetIOSend((void *) ctx, io_send_cb);
-}