openssl list -mac-algorithms support.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7541)

1 files changed, 20 insertions, 1 deletions

diff --git a/apps/openssl.c b/apps/openssl.c
index 3d6b276..67b75e4 100644
--- a/apps/openssl.c
+++ b/apps/openssl.c
@@ -297,6 +297,20 @@ static void list_md_fn(const EVP_MD *m,
     }
 }
 
+static void list_mac_fn(const EVP_MAC *m,
+                        const char *from, const char *to, void *arg)
+{
+    if (m != NULL) {
+        BIO_printf(arg, "%s\n", EVP_MAC_name(m));
+    } else {
+        if (from == NULL)
+            from = "<undefined>";
+        if (to == NULL)
+            to = "<undefined>";
+        BIO_printf(arg, "%s => %s\n", from, to);
+    }
+}
+
 static void list_missing_help(void)
 {
     const FUNCTION *fp;
@@ -396,7 +410,7 @@ static void list_options_for_command(const char *command)
 /* Unified enum for help and list commands. */
 typedef enum HELPLIST_CHOICE {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ONE,
-    OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_OPTIONS,
+    OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_MAC_ALGORITHMS, OPT_OPTIONS,
     OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
     OPT_PK_ALGORITHMS, OPT_PK_METHOD, OPT_DISABLED, OPT_MISSING_HELP,
     OPT_OBJECTS
@@ -410,6 +424,8 @@ const OPTIONS list_options[] = {
      "List of message digest commands"},
     {"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
      "List of message digest algorithms"},
+    {"mac-algorithms", OPT_MAC_ALGORITHMS, '-',
+     "List of message authentication code algorithms"},
     {"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
     {"cipher-algorithms", OPT_CIPHER_ALGORITHMS, '-',
      "List of cipher algorithms"},
@@ -457,6 +473,9 @@ opthelp:
         case OPT_DIGEST_ALGORITHMS:
             EVP_MD_do_all_sorted(list_md_fn, bio_out);
             break;
+        case OPT_MAC_ALGORITHMS:
+            EVP_MAC_do_all_sorted(list_mac_fn, bio_out);
+            break;
         case OPT_CIPHER_COMMANDS:
             list_type(FT_cipher, one);
             break;