/*      $NetBSD: dwarf_str.c,v 1.5 2024/03/03 17:37:32 christos Exp $   */

/*-
* Copyright (c) 2009 Kai Wang
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include "_libdwarf.h"

__RCSID("$NetBSD: dwarf_str.c,v 1.5 2024/03/03 17:37:32 christos Exp $");
ELFTC_VCSID("Id: dwarf_str.c 3295 2016-01-08 22:08:10Z jkoshy");

int
dwarf_get_str(Dwarf_Debug dbg, Dwarf_Off offset, char **string,
   Dwarf_Signed *ret_strlen, Dwarf_Error *error)
{
       Dwarf_Section *ds;

       if (dbg == NULL || string == NULL || ret_strlen == NULL) {
               DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
               return (DW_DLV_ERROR);
       }

       ds = _dwarf_find_section(dbg, ".debug_str");
       if (ds == NULL) {
               DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
               return (DW_DLV_NO_ENTRY);
       }

       if (offset > ds->ds_size) {
               DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
               return (DW_DLV_ERROR);
       }

       if (offset == ds->ds_size) {
               DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
               return (DW_DLV_NO_ENTRY);
       }

       *string = (char *) ds->ds_data + offset;
       *ret_strlen = strlen(*string);

       return (DW_DLV_OK);
}