New functions to enumerate digests and ciphers.

3 files changed, 82 insertions, 0 deletions

diff --git a/crypto/evp/evp.h b/crypto/evp/evp.h
index 59460fb277..509f8579af 100644
--- a/crypto/evp/evp.h
+++ b/crypto/evp/evp.h
@@ -782,6 +782,16 @@ const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
 const EVP_MD *EVP_get_digestbyname(const char *name);
 void EVP_cleanup(void);
 
+void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph,
+		const char *from, const char *to, void *x), void *arg);
+void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
+		const char *from, const char *to, void *x), void *arg);
+
+void EVP_MD_do_all(void (*fn)(const EVP_MD *ciph,
+		const char *from, const char *to, void *x), void *arg);
+void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *ciph,
+		const char *from, const char *to, void *x), void *arg);
+
 int		EVP_PKEY_decrypt_old(unsigned char *dec_key,
 			const unsigned char *enc_key,int enc_key_len,
 			EVP_PKEY *private_key);
diff --git a/crypto/evp/names.c b/crypto/evp/names.c
index 348df71cba..7fd67fa870 100644
--- a/crypto/evp/names.c
+++ b/crypto/evp/names.c
@@ -76,6 +76,7 @@ int EVP_add_cipher(const EVP_CIPHER *c)
 	return(r);
 	}
 
+
 int EVP_add_digest(const EVP_MD *md)
 	{
 	int r;
@@ -132,3 +133,71 @@ void EVP_cleanup(void)
 		OBJ_cleanup();
 		}
 	}
+
+struct doall_cipher
+	{
+	void *arg;
+	void (*fn)(const EVP_CIPHER *ciph,
+			const char *from, const char *to, void *arg);
+	};
+
+static void do_all_cipher_fn(const OBJ_NAME *nm, void *arg)
+	{
+	struct doall_cipher *dc = arg;
+	if (nm->alias)
+		dc->fn(NULL, nm->name, nm->data, dc->arg);
+	else
+		dc->fn((const EVP_CIPHER *)nm->data, NULL, NULL, dc->arg);
+	}
+
+void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph,
+		const char *from, const char *to, void *x), void *arg)
+	{
+	struct doall_cipher dc;
+	dc.fn = fn;
+	dc.arg = arg;
+	OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn, &dc);
+	}
+
+void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
+		const char *from, const char *to, void *x), void *arg)
+	{
+	struct doall_cipher dc;
+	dc.fn = fn;
+	dc.arg = arg;
+	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, do_all_cipher_fn,&dc);
+	}
+
+struct doall_md
+	{
+	void *arg;
+	void (*fn)(const EVP_MD *ciph,
+			const char *from, const char *to, void *arg);
+	};
+
+static void do_all_md_fn(const OBJ_NAME *nm, void *arg)
+	{
+	struct doall_md *dc = arg;
+	if (nm->alias)
+		dc->fn(NULL, nm->name, nm->data, dc->arg);
+	else
+		dc->fn((const EVP_MD *)nm->data, NULL, NULL, dc->arg);
+	}
+
+void EVP_MD_do_all(void (*fn)(const EVP_MD *md,
+		const char *from, const char *to, void *x), void *arg)
+	{
+	struct doall_md dc;
+	dc.fn = fn;
+	dc.arg = arg;
+	OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
+	}
+
+void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *md,
+		const char *from, const char *to, void *x), void *arg)
+	{
+	struct doall_md dc;
+	dc.fn = fn;
+	dc.arg = arg;
+	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
+	}
diff --git a/crypto/lhash/lhash.c b/crypto/lhash/lhash.c
index 55cb05579b..373c72dcb6 100644
--- a/crypto/lhash/lhash.c
+++ b/crypto/lhash/lhash.c
@@ -273,6 +273,9 @@ static void doall_util_fn(LHASH *lh, int use_arg, LHASH_DOALL_FN_TYPE func,
 	int i;
 	LHASH_NODE *a,*n;
 
+	if (lh == NULL)
+		return;
+
 	/* reverse the order so we search from 'top to bottom'
 	 * We were having memory leaks otherwise */
 	for (i=lh->num_nodes-1; i>=0; i--)