1 files changed, 206 insertions, 0 deletions

diff --git a/src/cli/util/gnunet-config.c b/src/cli/util/gnunet-config.c
new file mode 100644
index 000000000..714c683dd
--- /dev/null
+++ b/src/cli/util/gnunet-config.c
@@ -0,0 +1,206 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2012-2021 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet 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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file util/gnunet-config.c
+ * @brief tool to access and manipulate GNUnet configuration files
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+
+/**
+ * Backend to check if the respective plugin is
+ * loadable. NULL if no check is to be performed.
+ * The value is the "basename" of the plugin to load.
+ */
+static char *backend_check;
+
+
+/**
+ * If printing the value of CFLAGS has been requested.
+ */
+static int cflags;
+
+/**
+ * Check if this is an experimental build
+ */
+static int is_experimental;
+
+
+/**
+ * If printing the value of LIBS has been requested.
+ */
+static int libs;
+
+
+/**
+ * If printing the value of PREFIX has been requested.
+ */
+static int prefix;
+
+
+/**
+ * Print each option in a given section.
+ * Main task to run to perform operations typical for
+ * gnunet-config as per the configuration settings
+ * given in @a cls.
+ *
+ * @param cls closure with the `struct GNUNET_CONFIGURATION_ConfigSettings`
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving,
+ *                                                     can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls,
+     char *const *args,
+     const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  struct GNUNET_CONFIGURATION_ConfigSettings *cs = cls;
+
+  if (1 == is_experimental)
+  {
+#ifdef GNUNET_EXPERIMENTAL
+    cs->global_ret = 0;
+#else
+    cs->global_ret = 1;
+#endif
+    return;
+  }
+  if (1 == cflags || 1 == libs || 1 == prefix)
+  {
+    char *prefixdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_PREFIX);
+    char *libdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
+
+    if (1 == cflags)
+    {
+      fprintf (stdout, "-I%sinclude\n", prefixdir);
+    }
+    if (1 == libs)
+    {
+      fprintf (stdout, "-L%s -lgnunetutil\n", libdir);
+    }
+    if (1 == prefix)
+    {
+      fprintf (stdout, "%s\n", prefixdir);
+    }
+    cs->global_ret = 0;
+    GNUNET_free (prefixdir);
+    GNUNET_free (libdir);
+    return;
+  }
+  if (NULL != backend_check)
+  {
+    char *name;
+
+    GNUNET_asprintf (&name,
+                     "libgnunet_plugin_%s",
+                     backend_check);
+    cs->global_ret = (GNUNET_OK ==
+                      GNUNET_PLUGIN_test (name)) ? 0 : 77;
+    GNUNET_free (name);
+    return;
+  }
+  GNUNET_CONFIGURATION_config_tool_run (cs,
+                                        args,
+                                        cfgfile,
+                                        cfg);
+}
+
+
+/**
+ * Program to manipulate configuration files.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc,
+      char *const *argv)
+{
+  struct GNUNET_CONFIGURATION_ConfigSettings cs = {
+    .api_version = GNUNET_UTIL_VERSION,
+    .global_ret = EXIT_SUCCESS
+  };
+  struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_option_exclusive (
+      GNUNET_GETOPT_option_string (
+        'b',
+        "supported-backend",
+        "BACKEND",
+        gettext_noop (
+          "test if the current installation supports the specified BACKEND"),
+        &backend_check)),
+    GNUNET_GETOPT_option_flag (
+      'C',
+      "cflags",
+      gettext_noop (
+        "Provide an appropriate value for CFLAGS to applications building on top of GNUnet"),
+      &cflags),
+    GNUNET_GETOPT_option_flag (
+      'E',
+      "is-experimental",
+      gettext_noop ("Is this an experimental build of GNUnet"),
+      &is_experimental),
+    GNUNET_GETOPT_option_flag (
+      'j',
+      "libs",
+      gettext_noop (
+        "Provide an appropriate value for LIBS to applications building on top of GNUnet"),
+      &libs),
+    GNUNET_GETOPT_option_flag (
+      'p',
+      "prefix",
+      gettext_noop (
+        "Provide the path under which GNUnet was installed"),
+      &prefix),
+    GNUNET_CONFIGURATION_CONFIG_OPTIONS (&cs),
+    GNUNET_GETOPT_OPTION_END
+  };
+  enum GNUNET_GenericReturnValue ret;
+
+  if (GNUNET_OK !=
+      GNUNET_STRINGS_get_utf8_args (argc, argv,
+                                    &argc, &argv))
+    return EXIT_FAILURE;
+  ret =
+    GNUNET_PROGRAM_run (argc,
+                        argv,
+                        "gnunet-config [OPTIONS]",
+                        gettext_noop ("Manipulate GNUnet configuration files"),
+                        options,
+                        &run,
+                        &cs);
+  GNUNET_free_nz ((void *) argv);
+  GNUNET_CONFIGURATION_config_settings_free (&cs);
+  if (GNUNET_NO == ret)
+    return 0;
+  if (GNUNET_SYSERR == ret)
+    return EXIT_INVALIDARGUMENT;
+  return cs.global_ret;
+}
+
+
+/* end of gnunet-config.c */