Add support for .include directive in config files

Either files or directories of *.cnf or *.conf files
can be included.
Recursive inclusion of directories is not supported.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5351)

1 files changed, 161 insertions, 0 deletions

diff --git a/test/conf_include_test.c b/test/conf_include_test.c
new file mode 100644
index 0000000000..41e4da04eb
--- /dev/null
+++ b/test/conf_include_test.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 <stdlib.h>
+#include <string.h>
+#include <openssl/conf.h>
+#include <openssl/err.h>
+#include "testutil.h"
+
+#ifdef _WIN32
+# include <direct.h>
+# define DIRSEP "/\\"
+# define chdir _chdir
+# define DIRSEP_PRESERVE 0
+#elif !defined(OPENSSL_NO_POSIX_IO)
+# include <unistd.h>
+# ifndef OPENSSL_SYS_VMS
+#  define DIRSEP "/"
+#  define DIRSEP_PRESERVE 0
+# else
+#  define DIRSEP "/]:"
+#  define DIRSEP_PRESERVE 1
+# endif
+#else
+/* the test does not work without chdir() */
+# define chdir(x) (-1);
+# define DIRSEP ""
+#  define DIRSEP_PRESERVE 0
+#endif
+
+/* changes path to that of the filename */
+static int change_path(const char *file)
+{
+    char *s = OPENSSL_strdup(file);
+    char *p = s;
+    char *last = NULL;
+    int ret;
+
+    if (s == NULL)
+        return -1;
+
+    while ((p = strpbrk(p, DIRSEP)) != NULL) {
+        last = p++;
+    }
+    if (last == NULL)
+        return 0;
+    last[DIRSEP_PRESERVE] = 0;
+
+    TEST_note("changing path to %s", s);
+    ret = chdir(s);
+    OPENSSL_free(s);
+    return ret;
+}
+
+/*
+ * This test program checks the operation of the .include directive.
+ */
+
+static CONF *conf;
+static BIO *in;
+static int expect_failure = 0;
+
+static int test_load_config(void)
+{
+    long errline;
+    long val;
+    char *str;
+    long err;
+
+    if (!TEST_int_gt(NCONF_load_bio(conf, in, &errline), 0)
+        || !TEST_int_eq(err = ERR_peek_error(), 0)) {
+        if (expect_failure)
+            return 1;
+        TEST_note("Failure loading the configuration at line %ld", errline);
+        return 0;
+    }
+    if (expect_failure) {
+        TEST_note("Failure expected but did not happen");
+        return 0;
+    }
+
+    if (!TEST_int_gt(CONF_modules_load(conf, NULL, 0), 0)) {
+        TEST_note("Failed in CONF_modules_load");
+        return 0;
+    }
+
+    /* verify whether RANDFILE is set correctly */
+    str = NCONF_get_string(conf, "", "RANDFILE");
+    if (!TEST_ptr(str) || !TEST_str_eq(str, "./.rnd")) {
+        TEST_note("RANDFILE incorrect");
+        return 0;
+    }
+
+    /* verify whether CA_default/default_days is set */
+    val = 0;
+    if (!TEST_int_eq(NCONF_get_number(conf, "CA_default", "default_days", &val), 1)
+        || !TEST_int_eq(val, 365)) {
+        TEST_note("default_days incorrect");
+        return 0;
+    }
+
+    /* verify whether req/default_bits is set */
+    val = 0;
+    if (!TEST_int_eq(NCONF_get_number(conf, "req", "default_bits", &val), 1)
+        || !TEST_int_eq(val, 2048)) {
+        TEST_note("default_bits incorrect");
+        return 0;
+    }
+
+    /* verify whether countryName_default is set correctly */
+    str = NCONF_get_string(conf, "req_distinguished_name", "countryName_default");
+    if (!TEST_ptr(str) || !TEST_str_eq(str, "AU")) {
+        TEST_note("countryName_default incorrect");
+        return 0;
+    }
+
+    return 1;
+}
+
+int setup_tests(void)
+{
+    const char *conf_file;
+    const char *arg2;
+
+    if (!TEST_ptr(conf = NCONF_new(NULL)))
+        return 0;
+
+    conf_file = test_get_argument(0);
+
+    if (!TEST_ptr(conf_file)
+        || !TEST_ptr(in = BIO_new_file(conf_file, "r"))) {
+        TEST_note("Unable to open the file argument");
+        return 0;
+    }
+
+    if ((arg2 = test_get_argument(1)) != NULL && *arg2 == 'f') {
+       expect_failure = 1;
+    }
+
+    /*
+     * For this test we need to chdir as we use relative
+     * path names in the config files.
+     */
+    change_path(conf_file);
+
+    ADD_TEST(test_load_config);
+    return 1;
+}
+
+void cleanup_tests(void)
+{
+    BIO_vfree(in);
+    NCONF_free(conf);
+    CONF_modules_unload(1);
+}