libcli/dns: Add resolv.conf parsing

[gd/samba-autobuild/.git] / libcli / dns / resolvconftest.c

diff --git a/libcli/dns/resolvconftest.c b/libcli/dns/resolvconftest.c
new file mode 100644 (file)
index 0000000..6395264
--- /dev/null
+++ b/libcli/dns/resolvconftest.c
@@ -0,0 +1,82 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Internal DNS query structures
+ *  Copyright (C) Volker Lendecke 2018
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <talloc.h>
+#include <errno.h>
+#include "libcli/dns/resolvconf.h"
+#include "lib/util/memory.h"
+
+static int resolvconftest1(void)
+{
+       const char *content =
+               "#foo\nbar\nnameserver 1.2.3.4\nnameserver 2.3.4.5";
+       char *file;
+       FILE *fp;
+       int ret;
+       char **nameservers;
+       size_t num_nameservers;
+
+       file = strdup(content);
+       if (file == NULL) {
+               perror("strdup failed");
+               return ENOMEM;
+       }
+       fp = fmemopen(file, strlen(file), "r");
+       if (fp == NULL) {
+               perror("fmemopen failed");
+               return errno;
+       }
+
+       ret = parse_resolvconf_fp(fp, NULL, &nameservers, &num_nameservers);
+       if (ret != 0) {
+               fprintf(stderr, "parse_resolvconf_fp failed: %s\n",
+                       strerror(ret));
+               return ret;
+       }
+
+       if (num_nameservers != 2) {
+               fprintf(stderr, "expected 2 nameservers, got %zu\n",
+                       num_nameservers);
+               return EIO;
+       }
+       if ((strcmp(nameservers[0], "1.2.3.4") != 0) ||
+           (strcmp(nameservers[1], "2.3.4.5") != 0)) {
+               fprintf(stderr, "got wrong nameservers\n");
+               return EIO;
+       }
+
+       TALLOC_FREE(nameservers);
+       fclose(fp);
+       SAFE_FREE(file);
+
+       return 0;
+}
+
+int main(void) {
+       int ret;
+
+       ret = resolvconftest1();
+       if (ret != 0) {
+               return 1;
+       }
+
+       return 0;
+}