NAMESTORE: Start parser for DNS zonefiles

2 files changed, 208 insertions, 1 deletions

diff --git a/src/namestore/Makefile.am b/src/namestore/Makefile.am
index da563a9e8..8abe6560f 100644
--- a/src/namestore/Makefile.am
+++ b/src/namestore/Makefile.am
@@ -85,6 +85,7 @@ libexec_PROGRAMS = \
 bin_PROGRAMS = \
  gnunet-namestore \
  gnunet-namestore-dbtool \
+ gnunet-namestore-zonefile \
  gnunet-zoneimport
 
 libexec_PROGRAMS += \
@@ -127,7 +128,12 @@ libgnunetnamestore_la_LDFLAGS = \
   $(GN_LIB_LDFLAGS)  \
   -version-info 0:1:0
 
-
+gnunet_namestore_zonefile_SOURCES = \
+ gnunet-namestore-zonefile.c
+gnunet_namestore_zonefile_LDADD = \
+  libgnunetnamestore.la \
+  $(top_builddir)/src/util/libgnunetutil.la \
+  $(GN_LIBINTL)
 
 gnunet_zoneimport_SOURCES = \
  gnunet-zoneimport.c
diff --git a/src/namestore/gnunet-namestore-zonefile.c b/src/namestore/gnunet-namestore-zonefile.c
new file mode 100644
index 000000000..645498257
--- /dev/null
+++ b/src/namestore/gnunet-namestore-zonefile.c
@@ -0,0 +1,201 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2012, 2013, 2014, 2019, 2022 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 gnunet-namestore-dbtool.c
+ * @brief command line tool to manipulate the database backends for the namestore
+ * @author Martin Schanzenbach
+ *
+ */
+#include "platform.h"
+#include <gnunet_util_lib.h>
+#include <gnunet_namestore_plugin.h>
+
+/**
+ * Return code
+ */
+static int ret = 0;
+
+/**
+ * Task run on shutdown.  Cleans up everything.
+ *
+ * @param cls unused
+ */
+static void
+do_shutdown (void *cls)
+{
+  (void) cls;
+}
+/**
+ * Main function that will be run.
+ *
+ * @param cls closure
+ * @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)
+{
+  char buf[5000];   /* buffer to hold entire line (adjust MAXC as needed) */
+  char *next;
+  char *token;
+  char origin[255];
+  char lastname[255];
+  int origin_line = 0;
+
+  /* use filename provided as 1st argument (stdin by default) */
+  int i = 0;
+  while (fgets (buf, 5000, stdin))                     /* read each line of input */
+  {
+    origin_line = 0;
+    /* Find space */
+    next = strchr (buf, ' ');
+    if (NULL == next)
+    {
+      fprintf (stderr, "End?\n");
+      break;
+    }
+    next[0] = '\0';
+    next++;
+    if (0 == (strcmp (buf, "$ORIGIN")))
+      origin_line = 1;
+    else if (0 == (strcmp (buf, "$TTL")))
+      continue; // FIXME
+    else
+    {
+      if (0 == strlen (buf)) // Inherit name from before
+      {
+        printf ("Old name: %s\n", lastname);
+      }
+      else if (buf[strlen (buf) - 1] != '.') // no fqdn
+      {
+        printf ("New name: %s\n", buf);
+        strcpy (lastname, buf);
+      }
+      else if (0 == strcmp (buf, origin))
+      {
+        printf ("New name: @\n");
+        strcpy (lastname, "@");
+      }
+      else
+      {
+        if (strlen (buf) < strlen (origin))
+        {
+          fprintf (stderr, "Wrong origin: %s (expected %s)\n", buf, origin);
+          break; // FIXME error?
+        }
+        if (0 != strcmp (buf + (strlen (buf) - strlen (origin)), origin))
+        {
+          fprintf (stderr, "Wrong origin: %s (expected %s)\n", buf, origin);
+          break;
+        }
+        buf[strlen (buf) - strlen (origin) - 1] = '\0';
+        printf ("New name: %s\n", buf);
+        strcpy (lastname, buf);
+      }
+    }
+    while (*next == ' ')
+      next++;
+    token = next;
+
+    if (origin_line)
+    {
+      next = strchr (token, ';');
+      if (NULL != next)
+        next[0] = '\0';
+      next = strchr (token, ' ');
+      if (NULL != next)
+        next[0] = '\0';
+      strcpy (origin, token);
+      printf ("Origin is: %s\n", origin);
+      continue;
+    }
+    next = strchr (token, ' ');
+    if (NULL == next)
+    {
+      fprintf (stderr, "Error, last token: %s\n", token);
+      break;
+    }
+    next[0] = '\0';
+    next++;
+    printf ("class is: %s\n", token);
+    while (*next == ' ')
+      next++;
+    token = next;
+    next = strchr (token, ' ');
+    if (NULL == next)
+    {
+      fprintf (stderr, "Error\n");
+      break;
+    }
+    next[0] = '\0';
+    next++;
+    printf ("type is: %s\n", token);
+    while (*next == ' ')
+      next++;
+    token = next;
+    next = strchr (token, ';');
+    if (NULL != next)
+      next[0] = '\0';
+    printf ("data is: %s\n\n", token);
+  }
+
+  GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * The main function for gnunet-namestore-dbtool.
+ *
+ * @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_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_END
+  };
+  int lret;
+
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+    return 2;
+
+  GNUNET_log_setup ("gnunet-namestore-dbtool", "WARNING", NULL);
+  if (GNUNET_OK !=
+      (lret = GNUNET_PROGRAM_run (argc,
+                                  argv,
+                                  "gnunet-namestore-dbtool",
+                                  _ (
+                                    "GNUnet namestore database manipulation tool"),
+                                  options,
+                                  &run,
+                                  NULL)))
+  {
+    GNUNET_free_nz ((void *) argv);
+    return lret;
+  }
+  GNUNET_free_nz ((void *) argv);
+  return ret;
+}