[PATCH] memory-based bio does not reset properly

[Conrad Huang]

Bug:

        Create a memory-based bio using:

                bio = BIO_new_mem_buf(ptr, length);

        Read through the entire contents and try to reset:

                BIO_reset(bio);

        "bio" is not properly reset because its length is still zero.

Patch:

--- bss_mem.c.orig      Sun Feb 20 16:00:39 2000
+++ bss_mem.c   Mon May 15 20:43:06 2000
@@ -210,8 +210,10 @@
        case BIO_CTRL_RESET:
                if (bm->data != NULL) {
                        /* For read only case reset to the start again */
-                       if(b->flags & BIO_FLAGS_MEM_RDONLY) 
-                                       bm->data -= bm->max - bm->length;
+                       if(b->flags & BIO_FLAGS_MEM_RDONLY) {
+                               bm->data -= bm->max - bm->length;
+                               bm->length = bm->max;
+                       }
                        else {
                                memset(bm->data,0,bm->max);
                                bm->length=0;
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