'openssl list' and 'openssl provider': adapt display of multiple names

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/9979)

1 files changed, 48 insertions, 0 deletions

diff --git a/apps/lib/names.c b/apps/lib/names.c
new file mode 100644
index 0000000000..09ee16fd37
--- /dev/null
+++ b/apps/lib/names.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <string.h>
+#include <openssl/bio.h>
+#include <openssl/safestack.h>
+#include "names.h"
+
+#ifdef _WIN32
+# define strcasecmp _stricmp
+#endif
+
+int name_cmp(const char * const *a, const char * const *b)
+{
+    return strcasecmp(*a, *b);
+}
+
+void collect_names(const char *name, void *vdata)
+{
+    STACK_OF(OPENSSL_CSTRING) *names = vdata;
+
+    sk_OPENSSL_CSTRING_push(names, name);
+}
+
+void print_names(BIO *out, STACK_OF(OPENSSL_CSTRING) *names)
+{
+    int i = sk_OPENSSL_CSTRING_num(names);
+    int j;
+
+    sk_OPENSSL_CSTRING_sort(names);
+    if (i > 1)
+        BIO_printf(out, "{ ");
+    for (j = 0; j < i; j++) {
+        const char *name = sk_OPENSSL_CSTRING_value(names, j);
+
+        if (j > 0)
+            BIO_printf(out, ", ");
+        BIO_printf(out, "%s", name);
+    }
+    if (i > 1)
+        BIO_printf(out, " }");
+}