1 files changed, 131 insertions, 0 deletions
diff --git a/common/comopt.c b/common/comopt.c
new file mode 100644
index 000000000..764df57c6
--- /dev/null
+++ b/common/comopt.c
@@ -0,0 +1,131 @@
+/* comopt.c - Common options for GnUPG (common.conf)
+ * Copyright (C) 2021 g10 Code GmbH
+ *
+ * This file is part of GnuPG.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either
+ *
+ *   - the GNU Lesser General Public License as published by the Free
+ *     Software Foundation; either version 3 of the License, or (at
+ *     your option) any later version.
+ *
+ * or
+ *
+ *   - the GNU General Public License as published by the Free
+ *     Software Foundation; either version 2 of the License, or (at
+ *     your option) any later version.
+ *
+ * or both in parallel, as here.
+ *
+ * This file 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 <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: (LGPL-3.0-or-later OR GPL-2.0-or-later)
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <ctype.h>
+
+#include "util.h"
+#include "i18n.h"
+#include "comopt.h"
+
+
+enum opt_values
+  {
+    aNull = 0,
+
+    oLogFile = 500,
+    oUseKeyboxd,
+    oKeyboxdProgram,
+
+    oNoop
+  };
+
+static gpgrt_opt_t opts[] = {
+  ARGPARSE_s_s (oLogFile,        "log-file", "@"),
+  ARGPARSE_s_n (oUseKeyboxd,     "use-keyboxd", "@"),
+  ARGPARSE_s_s (oKeyboxdProgram, "keyboxd-program", "@"),
+
+  ARGPARSE_end ()
+};
+
+
+
+/* Parse the common options in the homedir and etc.  This needs to be
+ * called after the gpgrt config directories are.  MODULE_ID is one of
+ * the GNUPG_MODULE_NAME_ constants.  If verbose is true info about
+ * the parsing is printed.  Note that this function is not
+ * thread-safe. */
+gpg_error_t
+parse_comopt (int module_id, int verbose)
+{
+  gpg_error_t err = 0;
+  gpgrt_argparse_t pargs;
+  int argc = 0;
+  char **argv = NULL;
+
+  /* Reset all options in case we are called a second time.  */
+  xfree (comopt.logfile);
+  xfree (comopt.keyboxd_program);
+  memset (&comopt, 0, sizeof comopt);
+
+  /* Start the parser.  */
+  pargs.argc = &argc;
+  pargs.argv = &argv;
+  pargs.flags = (ARGPARSE_FLAG_NOVERSION
+                 | ARGPARSE_FLAG_SYS
+                 | ARGPARSE_FLAG_USER
+                 );
+  while (gpgrt_argparser (&pargs, opts, "common" EXTSEP_S "conf" ))
+    {
+      switch (pargs.r_opt)
+        {
+        case ARGPARSE_CONFFILE:
+          if (verbose)
+            log_info (_("reading options from '%s'\n"),
+                      pargs.r_type? pargs.r.ret_str: "[cmdline]");
+          break;
+
+        case oLogFile:
+          comopt.logfile = pargs.r.ret_str;
+          break;
+
+        case oUseKeyboxd:
+          comopt.use_keyboxd = 1;
+          break;
+
+        case oKeyboxdProgram:
+          comopt.keyboxd_program = pargs.r.ret_str;
+          break;
+
+        default:
+          pargs.err = ARGPARSE_PRINT_WARNING;
+          err = gpg_error (GPG_ERR_GENERAL);
+          break;
+        }
+    }
+
+  gpgrt_argparse (NULL, &pargs, NULL);  /* Release internal state.  */
+
+  if (comopt.logfile && !(!strncmp (comopt.logfile, "socket:", 7)
+                          || !strncmp (comopt.logfile, "tcp:", 4)) )
+    {
+      /* Letting all modules write to the same log file is not a good
+       * idea.  Append the module name.  */
+      char *p;
+
+      p = xstrconcat (comopt.logfile, "-", gnupg_module_name (module_id), NULL);
+      xfree (comopt.logfile);
+      comopt.logfile = p;
+    }
+
+  return err;
+}