1 files changed, 19 insertions, 14 deletions

diff --git a/src/lib/libcrypto/bio/bss_mem.c b/src/lib/libcrypto/bio/bss_mem.c
index 41eab92415..28ff7582bf 100644
--- a/src/lib/libcrypto/bio/bss_mem.c
+++ b/src/lib/libcrypto/bio/bss_mem.c
@@ -61,11 +61,11 @@
 #include "cryptlib.h"
 #include <openssl/bio.h>
 
-static int mem_write(BIO *h,char *buf,int num);
-static int mem_read(BIO *h,char *buf,int size);
-static int mem_puts(BIO *h,char *str);
-static int mem_gets(BIO *h,char *str,int size);
-static long mem_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int mem_write(BIO *h, const char *buf, int num);
+static int mem_read(BIO *h, char *buf, int size);
+static int mem_puts(BIO *h, const char *str);
+static int mem_gets(BIO *h, char *str, int size);
+static long mem_ctrl(BIO *h, int cmd, long arg1, void *arg2);
 static int mem_new(BIO *h);
 static int mem_free(BIO *data);
 static BIO_METHOD mem_method=
@@ -163,14 +163,14 @@ static int mem_read(BIO *b, char *out, int outl)
                 }
         } else if (bm->length == 0)
                 {
-                if (b->num != 0)
+                ret = b->num;
+                if (ret != 0)
                         BIO_set_retry_read(b);
-                ret= b->num;
                 }
         return(ret);
         }
 
-static int mem_write(BIO *b, char *in, int inl)
+static int mem_write(BIO *b, const char *in, int inl)
         {
         int ret= -1;
         int blen;
@@ -198,7 +198,7 @@ end:
         return(ret);
         }
 
-static long mem_ctrl(BIO *b, int cmd, long num, char *ptr)
+static long mem_ctrl(BIO *b, int cmd, long num, void *ptr)
         {
         long ret=1;
         char **pptr;
@@ -208,15 +208,20 @@ static long mem_ctrl(BIO *b, int cmd, long num, char *ptr)
         switch (cmd)
                 {
         case BIO_CTRL_RESET:
-                if (bm->data != NULL) {
+                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;
-                        else {
+                                {
+                                bm->data -= bm->max - bm->length;
+                                bm->length = bm->max;
+                                }
+                        else
+                                {
                                 memset(bm->data,0,bm->max);
                                 bm->length=0;
+                                }
                         }
-                }
                 break;
         case BIO_CTRL_EOF:
                 ret=(long)(bm->length == 0);
@@ -300,7 +305,7 @@ static int mem_gets(BIO *bp, char *buf, int size)
         return(ret);
         }
 
-static int mem_puts(BIO *bp, char *str)
+static int mem_puts(BIO *bp, const char *str)
         {
         int n,ret;