/*

  *  Copyright (C) 2018-2019 Cisco Systems, Inc. and/or its affiliates. All rights reserved.

  *
  *  Authors: Andrew Williams
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.
  *
  *  This program 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, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  *  MA 02110-1301, USA.
  */
 
 #include "execs.h"
 #include <string.h>
 

 /**
  * Initialize a struct cli_exe_info so that it's ready to be populated
  * by the EXE header parsing functions (cli_peheader, cli_elfheader, and
  * cli_machoheader) and/or cli_exe_info_destroy.
  *
  * @param exeinfo a pointer to the struct cli_exe_info to initialize
  * @param offset the file offset corresponding to the start of the
  *        executable that exeinfo stores information about
  */

 void cli_exe_info_init(struct cli_exe_info *exeinfo, uint32_t offset)
 {
 
     if (NULL == exeinfo) {
         return;
     }

     memset(exeinfo, '\0', sizeof(*exeinfo));
     exeinfo->offset = offset;

 
     // TODO Replace the memset above with the following once we can make
     // certain that this is the only initialization needed (maybe run with
     // MemorySanitizer?)
 
     ///* Initialize all of the members which are actually used by the matcher
     // * and by the bytecode runtime.  The rest is executable specific and
     // * we'll leave it to be populated by the exe parsing code. */
     //exeinfo->offset = offset;
     //exeinfo->sections = NULL;
     //exeinfo->nsections = 0;
     //exeinfo->ep = 0;
     ///* NOTE: These are PE-specific to an extent, but we should still
     // * initialize them for other exe types because they are used by
     // * the matcher/bytecode runtime. */
     //exeinfo->hdr_size = 0;
     //exeinfo->res_addr = 0;
     //cli_hashset_init_noalloc(&(exeinfo->vinfo));

 }
 

 /**
  * Free resources associated with a struct cli_exe_info initialized
  * via cli_exe_info_init
  *
  * @param exeinfo a pointer to the struct cli_exe_info to destroy
  */

 void cli_exe_info_destroy(struct cli_exe_info *exeinfo)
 {
 
     if (NULL == exeinfo) {
         return;
     }
 
     if (NULL != exeinfo->sections) {
         free(exeinfo->sections);
         exeinfo->sections = NULL;
     }
 
     cli_hashset_destroy(&(exeinfo->vinfo));
 }