Files
2026-05-07 06:55:44 +02:00

490 lines
13 KiB
C

/*
* Library to access the executable (EXE) format
*
* Copyright (C) 2011-2026, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of 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.
*
* 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 Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#if !defined( _LIBEXE_H )
#define _LIBEXE_H
#include <libexe/codepage.h>
#include <libexe/definitions.h>
#include <libexe/error.h>
#include <libexe/extern.h>
#include <libexe/features.h>
#include <libexe/types.h>
#include <stdio.h>
#if defined( LIBEXE_HAVE_BFIO )
#include <libbfio.h>
#endif
#if defined( __cplusplus )
extern "C" {
#endif
/* -------------------------------------------------------------------------
* Support functions
* ------------------------------------------------------------------------- */
/* Returns the library version
*/
LIBEXE_EXTERN \
const char *libexe_get_version(
void );
/* Returns the access flags for reading
*/
LIBEXE_EXTERN \
int libexe_get_access_flags_read(
void );
/* Retrieves the narrow system string codepage
* A value of 0 represents no codepage, UTF-8 encoding is used instead
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_get_codepage(
int *codepage,
libexe_error_t **error );
/* Sets the narrow system string codepage
* A value of 0 represents no codepage, UTF-8 encoding is used instead
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_set_codepage(
int codepage,
libexe_error_t **error );
/* Determines if a file contains an EXE file signature
* Returns 1 if true, 0 if not or -1 on error
*/
LIBEXE_EXTERN \
int libexe_check_file_signature(
const char *filename,
libexe_error_t **error );
#if defined( LIBEXE_HAVE_WIDE_CHARACTER_TYPE )
/* Determines if a file contains an EXE file signature
* Returns 1 if true, 0 if not or -1 on error
*/
LIBEXE_EXTERN \
int libexe_check_file_signature_wide(
const wchar_t *filename,
libexe_error_t **error );
#endif /* defined( LIBEXE_HAVE_WIDE_CHARACTER_TYPE ) */
#if defined( LIBEXE_HAVE_BFIO )
/* Determines if a file contains an EXE file signature using a Basic File IO (bfio) handle
* Returns 1 if true, 0 if not or -1 on error
*/
LIBEXE_EXTERN \
int libexe_check_file_signature_file_io_handle(
libbfio_handle_t *file_io_handle,
libexe_error_t **error );
#endif /* defined( LIBEXE_HAVE_BFIO ) */
/* -------------------------------------------------------------------------
* Notify functions
* ------------------------------------------------------------------------- */
/* Sets the verbose notification
*/
LIBEXE_EXTERN \
void libexe_notify_set_verbose(
int verbose );
/* Sets the notification stream
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_notify_set_stream(
FILE *stream,
libexe_error_t **error );
/* Opens the notification stream using a filename
* The stream is opened in append mode
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_notify_stream_open(
const char *filename,
libexe_error_t **error );
/* Closes the notification stream if opened using a filename
* Returns 0 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_notify_stream_close(
libexe_error_t **error );
/* -------------------------------------------------------------------------
* Error functions
* ------------------------------------------------------------------------- */
/* Frees an error
*/
LIBEXE_EXTERN \
void libexe_error_free(
libexe_error_t **error );
/* Prints a descriptive string of the error to the stream
* Returns the number of printed characters if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_error_fprint(
libexe_error_t *error,
FILE *stream );
/* Prints a descriptive string of the error to the string
* The end-of-string character is not included in the return value
* Returns the number of printed characters if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_error_sprint(
libexe_error_t *error,
char *string,
size_t size );
/* Prints a backtrace of the error to the stream
* Returns the number of printed characters if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_error_backtrace_fprint(
libexe_error_t *error,
FILE *stream );
/* Prints a backtrace of the error to the string
* The end-of-string character is not included in the return value
* Returns the number of printed characters if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_error_backtrace_sprint(
libexe_error_t *error,
char *string,
size_t size );
/* -------------------------------------------------------------------------
* File functions
* ------------------------------------------------------------------------- */
/* Creates a file
* Make sure the value file is referencing, is set to NULL
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_initialize(
libexe_file_t **file,
libexe_error_t **error );
/* Frees a file
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_free(
libexe_file_t **file,
libexe_error_t **error );
/* Signals the libexe file to abort its current activity
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_signal_abort(
libexe_file_t *file,
libexe_error_t **error );
/* Opens a file
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_open(
libexe_file_t *file,
const char *filename,
int access_flags,
libexe_error_t **error );
#if defined( LIBEXE_HAVE_WIDE_CHARACTER_TYPE )
/* Opens a file
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_open_wide(
libexe_file_t *file,
const wchar_t *filename,
int access_flags,
libexe_error_t **error );
#endif /* defined( LIBEXE_HAVE_WIDE_CHARACTER_TYPE ) */
#if defined( LIBEXE_HAVE_BFIO )
/* Opens a file using a Basic File IO (bfio) handle
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_open_file_io_handle(
libexe_file_t *file,
libbfio_handle_t *file_io_handle,
int access_flags,
libexe_error_t **error );
#endif /* defined( LIBEXE_HAVE_BFIO ) */
/* Closes a file
* Returns 0 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_close(
libexe_file_t *file,
libexe_error_t **error );
/* Retrieves the file ASCII codepage
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_get_ascii_codepage(
libexe_file_t *file,
int *ascii_codepage,
libexe_error_t **error );
/* Sets the file ASCII codepage
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_set_ascii_codepage(
libexe_file_t *file,
int ascii_codepage,
libexe_error_t **error );
/* Retrieves the number of sections
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_get_number_of_sections(
libexe_file_t *file,
int *number_of_sections,
libexe_error_t **error );
/* Retrieves a specific section
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_get_section_by_index(
libexe_file_t *file,
int section_index,
libexe_section_t **section,
libexe_error_t **error );
/* Retrieves a specific section by an ASCII formatted name
* Returns 1 if successful, 0 if no such section or -1 on error
*/
LIBEXE_EXTERN \
int libexe_file_get_section_by_name(
libexe_file_t *file,
const char *string,
size_t string_length,
libexe_section_t **section,
libexe_error_t **error );
/* -------------------------------------------------------------------------
* File functions - deprecated
* ------------------------------------------------------------------------- */
/* Retrieves a specific section
*
* This function is deprecated use libexe_file_get_section_by_index instead
*
* Returns 1 if successful or -1 on error
*/
LIBEXE_DEPRECATED \
LIBEXE_EXTERN \
int libexe_file_get_section(
libexe_file_t *file,
int section_index,
libexe_section_t **section,
libexe_error_t **error );
/* -------------------------------------------------------------------------
* Section functions
* ------------------------------------------------------------------------- */
/* Frees a section
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_free(
libexe_section_t **section,
libexe_error_t **error );
/* Retrieves the size of the ASCII formatted name
* The returned size includes the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_name_size(
libexe_section_t *section,
size_t *string_size,
libexe_error_t **error );
/* Retrieves the ASCII formatted name
* The size should include the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_name(
libexe_section_t *section,
char *string,
size_t string_size,
libexe_error_t **error );
/* Retrieves the size of the UTF-8 formatted name
* The returned size includes the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_utf8_name_size(
libexe_section_t *section,
size_t *utf8_string_size,
libexe_error_t **error );
/* Retrieves the UTF-8 formatted name
* The size should include the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_utf8_name(
libexe_section_t *section,
uint8_t *utf8_string,
size_t utf8_string_size,
libexe_error_t **error );
/* Retrieves the size of the UTF-16 formatted name
* The returned size includes the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_utf16_name_size(
libexe_section_t *section,
size_t *utf16_string_size,
libexe_error_t **error );
/* Retrieves the UTF-16 formatted name
* The size should include the end of string character
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_utf16_name(
libexe_section_t *section,
uint16_t *utf16_string,
size_t utf16_string_size,
libexe_error_t **error );
/* Reads data at the current offset into a buffer
* Returns the number of bytes read or -1 on error
*/
LIBEXE_EXTERN \
ssize_t libexe_section_read_buffer(
libexe_section_t *section,
void *buffer,
size_t buffer_size,
libexe_error_t **error );
/* Reads data at a specific offset into a buffer
* Returns the number of bytes read or -1 on error
*/
LIBEXE_EXTERN \
ssize_t libexe_section_read_buffer_at_offset(
libexe_section_t *section,
void *buffer,
size_t buffer_size,
off64_t offset,
libexe_error_t **error );
/* Seeks a certain offset of the data
* Returns the offset if seek is successful or -1 on error
*/
LIBEXE_EXTERN \
off64_t libexe_section_seek_offset(
libexe_section_t *section,
off64_t offset,
int whence,
libexe_error_t **error );
/* Retrieves the (current) offset
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_offset(
libexe_section_t *section,
off64_t *offset,
libexe_error_t **error );
/* Retrieves the size
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_size(
libexe_section_t *section,
size64_t *size,
libexe_error_t **error );
/* Retrieves the start offset
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_start_offset(
libexe_section_t *section,
off64_t *start_offset,
libexe_error_t **error );
/* Retrieves the virtual address
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_virtual_address(
libexe_section_t *section,
uint32_t *virtual_address,
libexe_error_t **error );
#if defined( LIBEXE_HAVE_BFIO )
/* Retrieves the section data file io handle
* Returns 1 if successful or -1 on error
*/
LIBEXE_EXTERN \
int libexe_section_get_data_file_io_handle(
libexe_section_t *section,
libbfio_handle_t **file_io_handle,
libexe_error_t **error );
#endif /* defined( LIBEXE_HAVE_BFIO ) */
#if defined( __cplusplus )
}
#endif
#endif /* !defined( _LIBEXE_H ) */