For fuzzing: Expose directory_handle_command.

(Nick extracted this patch from a larger patch by Teor.)

src/or/directory.c

@@ -14,6 +14,7 @@
 #include "connection.h"
 #include "connection_edge.h"
 #include "control.h"
+#define DIRECTORY_PRIVATE
 #include "directory.h"
 #include "dirserv.h"
 #include "dirvote.h"
@@ -99,7 +100,6 @@ static void directory_send_command(dir_connection_t *conn,
                              int purpose, int direct, const char *resource,
                              const char *payload, size_t payload_len,
                              time_t if_modified_since);
-static int directory_handle_command(dir_connection_t *conn);
 static int body_is_plausible(const char *body, size_t body_len, int purpose);
 static char *http_get_header(const char *headers, const char *which);
 static void http_set_address_origin(const char *headers, connection_t *conn);
@@ -3846,7 +3846,7 @@ directory_handle_command_post(dir_connection_t *conn, const char *headers,
  * from the inbuf, try to process it; otherwise, leave it on the
  * buffer.  Return a 0 on success, or -1 on error.
  */
-static int
+STATIC int
 directory_handle_command(dir_connection_t *conn)
 {
   char *headers=NULL, *body=NULL;

src/or/directory.h

@@ -148,6 +148,7 @@ int purpose_needs_anonymity(uint8_t dir_purpose, uint8_t router_purpose,
 struct get_handler_args_t;
 STATIC int handle_get_hs_descriptor_v3(dir_connection_t *conn,
                                        const struct get_handler_args_t *args);
+STATIC int directory_handle_command(dir_connection_t *conn);
 
 #endif