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/*-
* Copyright (c) 2015 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.
*
* $Id: _libpe.h 3312 2016-01-10 09:23:51Z kaiwang27 $
*/
#ifndef __LIBPE_H_
#define __LIBPE_H_
#include <sys/types.h>
#include <sys/queue.h>
#include "libpe.h"
#include "_elftc.h"
typedef struct _PE_SecBuf {
PE_Buffer sb_pb; /* application buffer */
PE_Scn *sb_ps; /* PE_Scn pointer */
unsigned int sb_flags; /* buffer flags */
STAILQ_ENTRY(_PE_SecBuf) sb_next;
} PE_SecBuf;
struct _PE_Scn {
PE *ps_pe; /* PE descriptor */
PE_SecHdr ps_sh; /* section header */
unsigned int ps_ndx; /* 1-based section index */
unsigned int ps_flags; /* section flags */
unsigned int ps_falign; /* section file alignment */
STAILQ_HEAD(, _PE_SecBuf) ps_b; /* buffer list */
STAILQ_ENTRY(_PE_Scn) ps_next;
};
struct _PE {
int pe_fd; /* file descriptor */
PE_Cmd pe_cmd; /* open mode */
PE_Object pe_obj; /* PE32/PE32+/COFF */
size_t pe_fsize; /* file size */
unsigned int pe_flags; /* library flags */
PE_DosHdr *pe_dh; /* MS-DOS header */
char *pe_stub; /* MS-DOS stub */
size_t pe_stub_ex; /* MS-DOS stub len (exclude hdr) */
char *pe_stub_app; /* MS-DOS stub (app supplied) */
size_t pe_stub_app_sz; /* MS-DOS stub len (app supplied) */
PE_RichHdr *pe_rh; /* rich header */
char *pe_rh_start; /* pointer to rich header */
PE_CoffHdr *pe_ch; /* COFF header */
PE_OptHdr *pe_oh; /* optional header */
PE_DataDir *pe_dd; /* data directories */
unsigned int pe_nscn; /* num. of sections */
char *pe_symtab; /* COFF symbol table */
size_t pe_symbtab_sz; /* size of symbol table */
unsigned int pe_nsym; /* num. of symbols */
unsigned int pe_rvamax; /* maximum RVA */
STAILQ_HEAD(, _PE_Scn) pe_scn; /* section list */
};
/* Library internal flags */
#define LIBPE_F_API_MASK 0x000FFFU
#define LIBPE_F_SPECIAL_FILE 0x001000U
#define LIBPE_F_BAD_DOS_HEADER 0x002000U
#define LIBPE_F_BAD_PE_HEADER 0x004000U
#define LIBPE_F_BAD_COFF_HEADER 0x008000U
#define LIBPE_F_BAD_OPT_HEADER 0x010000U
#define LIBPE_F_BAD_SEC_HEADER 0x020000U
#define LIBPE_F_LOAD_DOS_STUB 0x040000U
#define LIBPE_F_FD_DONE 0x080000U
#define LIBPE_F_DIRTY_DOS_HEADER 0x100000U
#define LIBPE_F_DIRTY_COFF_HEADER 0x200000U
#define LIBPE_F_DIRTY_OPT_HEADER 0x400000U
#define LIBPE_F_DIRTY_SEC_HEADER 0x800000U
/* Internal section flags */
#define LIBPE_F_LOAD_SECTION 0x1000U
#define LIBPE_F_STRIP_SECTION 0x2000U
/* Internal buffer flags */
#define LIBPE_F_BUFFER_MALLOCED 0x1000U
/* Library internal defines */
#define PE_DOS_MAGIC 0x5a4dU
#define PE_RICH_TEXT "Rich"
#define PE_RICH_HIDDEN 0x536e6144U /* DanS */
#define PE_SIGNATURE 0x4550U /* PE\0\0 */
#define PE_COFF_OPT_SIZE_32 224
#define PE_COFF_OPT_SIZE_32P 240
#define PE_SYM_ENTRY_SIZE 18
/* Encode/Decode macros */
#if defined(ELFTC_NEED_BYTEORDER_EXTENSIONS)
static __inline uint16_t
le16dec(const void *pp)
{
unsigned char const *p = (unsigned char const *)pp;
return ((p[1] << 8) | p[0]);
}
static __inline uint32_t
le32dec(const void *pp)
{
unsigned char const *p = (unsigned char const *)pp;
return ((p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);
}
static __inline uint64_t
le64dec(const void *pp)
{
unsigned char const *p = (unsigned char const *)pp;
return (((uint64_t)le32dec(p + 4) << 32) | le32dec(p));
}
static __inline void
le16enc(void *pp, uint16_t u)
{
unsigned char *p = (unsigned char *)pp;
p[0] = u & 0xff;
p[1] = (u >> 8) & 0xff;
}
static __inline void
le32enc(void *pp, uint32_t u)
{
unsigned char *p = (unsigned char *)pp;
p[0] = u & 0xff;
p[1] = (u >> 8) & 0xff;
p[2] = (u >> 16) & 0xff;
p[3] = (u >> 24) & 0xff;
}
static __inline void
le64enc(void *pp, uint64_t u)
{
unsigned char *p = (unsigned char *)pp;
le32enc(p, (uint32_t)(u & 0xffffffffU));
le32enc(p + 4, (uint32_t)(u >> 32));
}
#endif /* ELFTC_NEED_BYTEORDER_EXTENSIONS */
#define PE_READ16(p,v) do { \
(v) = le16dec((p)); \
(p) += 2; \
} while(0)
#define PE_READ32(p,v) do { \
(v) = le32dec((p)); \
(p) += 4; \
} while(0)
#define PE_WRITE16(p,v) do { \
le16enc((p), (v)); \
(p) += 2; \
} while(0)
#define PE_WRITE32(p,v) do { \
le32enc((p), (v)); \
(p) += 4; \
} while(0)
/* Internal function declarations */
off_t libpe_align(PE *, off_t, size_t);
PE_SecBuf *libpe_alloc_buffer(PE_Scn *, size_t);
PE_Scn *libpe_alloc_scn(PE *);
int libpe_load_all_sections(PE *);
int libpe_load_section(PE *, PE_Scn *);
int libpe_open_object(PE *);
int libpe_pad(PE *, size_t);
int libpe_parse_msdos_header(PE *, char *);
int libpe_parse_coff_header(PE *, char *);
int libpe_parse_rich_header(PE *);
int libpe_parse_section_headers(PE *);
int libpe_read_msdos_stub(PE *);
void libpe_release_buffer(PE_SecBuf *);
void libpe_release_object(PE *);
void libpe_release_scn(PE_Scn *);
size_t libpe_resync_buffers(PE_Scn *);
int libpe_resync_sections(PE *, off_t);
int libpe_write_buffers(PE_Scn *);
off_t libpe_write_coff_header(PE *, off_t);
off_t libpe_write_msdos_stub(PE *, off_t);
off_t libpe_write_pe_header(PE *, off_t);
off_t libpe_write_sections(PE *, off_t);
off_t libpe_write_section_headers(PE *, off_t);
#endif /* !__LIBPE_H_ */
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