1 files changed, 88 insertions, 0 deletions
diff --git a/src/feature/api/tor_api.c b/src/feature/api/tor_api.c
new file mode 100644
index 0000000000..efedf2dc78
--- /dev/null
+++ b/src/feature/api/tor_api.c
@@ -0,0 +1,88 @@
+/* Copyright (c) 2001 Matej Pfajfar.
+ * Copyright (c) 2001-2004, Roger Dingledine.
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * \file tor_api.c
+ **/
+
+#include "or/tor_api.h"
+#include "or/tor_api_internal.h"
+
+// Include this after the above headers, to insure that they don't
+// depend on anything else.
+#include "orconfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// We don't want to use tor_malloc and tor_free here, since this needs
+// to run before anything is initialized at all, and ought to run when
+// we're not linked to anything at all.
+
+#define raw_malloc malloc
+#define raw_free free
+
+tor_main_configuration_t *
+tor_main_configuration_new(void)
+{
+  static const char *fake_argv[] = { "tor" };
+  tor_main_configuration_t *cfg = raw_malloc(sizeof(*cfg));
+  if (cfg == NULL)
+    return NULL;
+
+  memset(cfg, 0, sizeof(*cfg));
+
+  cfg->argc = 1;
+  cfg->argv = (char **) fake_argv;
+
+  return cfg;
+}
+
+int
+tor_main_configuration_set_command_line(tor_main_configuration_t *cfg,
+                                        int argc, char *argv[])
+{
+  if (cfg == NULL)
+    return -1;
+  cfg->argc = argc;
+  cfg->argv = argv;
+  return 0;
+}
+
+void
+tor_main_configuration_free(tor_main_configuration_t *cfg)
+{
+  if (cfg == NULL)
+    return;
+  raw_free(cfg);
+}
+
+/* Main entry point for the Tor process.  Called from main().
+ *
+ * This function is distinct from main() only so we can link main.c into
+ * the unittest binary without conflicting with the unittests' main.
+ *
+ * Some embedders have historically called this function; but that usage is
+ * deprecated: they should use tor_run_main() instead.
+ */
+int
+tor_main(int argc, char *argv[])
+{
+  tor_main_configuration_t *cfg = tor_main_configuration_new();
+  if (!cfg) {
+    puts("INTERNAL ERROR: Allocation failure. Cannot proceed");
+    return 1;
+  }
+  if (tor_main_configuration_set_command_line(cfg, argc, argv) < 0) {
+    puts("INTERNAL ERROR: Can't set command line. Cannot proceed.");
+    return 1;
+  }
+  int rv = tor_run_main(cfg);
+  tor_main_configuration_free(cfg);
+  return rv;
+}
+