Added implementation of keying material export (RFC 5705) (API for PRF implementation...

[BearSSL] / src / ssl / ssl_io.c

diff --git a/src/ssl/ssl_io.c b/src/ssl/ssl_io.c
index b409636..1952615 100644 (file)
--- a/src/ssl/ssl_io.c
+++ b/src/ssl/ssl_io.c
@@ -149,6 +149,9 @@ br_sslio_read(br_sslio_context *ctx, void *dst, size_t len)
        unsigned char *buf;
        size_t alen;
 
        unsigned char *buf;
        size_t alen;
 

+       if (len == 0) {
+               return 0;
+       }

        if (run_until(ctx, BR_SSL_RECVAPP) < 0) {
                return -1;
        }
        if (run_until(ctx, BR_SSL_RECVAPP) < 0) {
                return -1;
        }


@@ -188,6 +191,9 @@ br_sslio_write(br_sslio_context *ctx, const void *src, size_t len)
        unsigned char *buf;
        size_t alen;
 
        unsigned char *buf;
        size_t alen;
 

+       if (len == 0) {
+               return 0;
+       }

        if (run_until(ctx, BR_SSL_SENDAPP) < 0) {
                return -1;
        }
        if (run_until(ctx, BR_SSL_SENDAPP) < 0) {
                return -1;
        }