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-rw-r--r--CHANGES6
-rw-r--r--crypto/bio/b_sock.c36
2 files changed, 28 insertions, 14 deletions
diff --git a/CHANGES b/CHANGES
index f04945168c..6e9c072ab3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,12 @@
Changes between 0.9.6b and 0.9.6c [XX xxx XXXX]
+ *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
+ instead. BIO_gethostbyname() does not know what timeouts are
+ appropriate, so entries would stay in cache even when they hade
+ become invalid.
+ [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
+
*) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
faced with a pathologically small ClientHello fragment that does
not contain client_version: Instead of aborting with an error,
diff --git a/crypto/bio/b_sock.c b/crypto/bio/b_sock.c
index 62cc3f1a0c..d1398952b5 100644
--- a/crypto/bio/b_sock.c
+++ b/crypto/bio/b_sock.c
@@ -345,18 +345,23 @@ static void ghbn_free(struct hostent *a)
struct hostent *BIO_gethostbyname(const char *name)
{
+#if 1
+ /* Caching gethostbyname() results forever is wrong,
+ * so we have to let the true gethostbyname() worry about this */
+ return gethostbyname(name);
+#else
struct hostent *ret;
int i,lowi=0,j;
unsigned long low= (unsigned long)-1;
-/* return(gethostbyname(name)); */
-#if 0 /* It doesn't make sense to use locking here: The function interface
- * is not thread-safe, because threads can never be sure when
- * some other thread destroys the data they were given a pointer to.
- */
+# if 0
+ /* It doesn't make sense to use locking here: The function interface
+ * is not thread-safe, because threads can never be sure when
+ * some other thread destroys the data they were given a pointer to.
+ */
CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
-#endif
+# endif
j=strlen(name);
if (j < 128)
{
@@ -384,20 +389,21 @@ struct hostent *BIO_gethostbyname(const char *name)
* parameter is 'char *', instead of 'const char *'
*/
ret=gethostbyname(
-#ifndef CONST_STRICT
+# ifndef CONST_STRICT
(char *)
-#endif
+# endif
name);
if (ret == NULL)
goto end;
if (j > 128) /* too big to cache */
{
-#if 0 /* If we were trying to make this function thread-safe (which
- * is bound to fail), we'd have to give up in this case
- * (or allocate more memory). */
+# if 0
+ /* If we were trying to make this function thread-safe (which
+ * is bound to fail), we'd have to give up in this case
+ * (or allocate more memory). */
ret = NULL;
-#endif
+# endif
goto end;
}
@@ -421,12 +427,14 @@ struct hostent *BIO_gethostbyname(const char *name)
ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
}
end:
-#if 0
+# if 0
CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
-#endif
+# endif
return(ret);
+#endif
}
+
int BIO_sock_init(void)
{
#ifdef WINDOWS