#ifndef PERK_H

#define PERK_H

#include <stdint.h>

#include <stdio.h>

#include "perk_api.h"

#include "perk_consts.h"

#include "perk_structs.h"

#include "perk_meta.h"

#ifdef __cplusplus

extern "C" {

#endif

/* pre-alpha */

#ifndef PERK_APP

#ifndef PERK_PRE_ALPHA

#error  libperk: pre-alpha: ABI is not final!

#error  to use the library, please pass -DPERK_PRE_ALPHA to the compiler.

#endif

#endif

/* status codes */

#define PERK_OK				0x00

#define PERK_USAGE			0x01

#define PERK_ERROR			0x02

/* driver flags */

#define PERK_DRIVER_VERBOSITY_NONE	0x0000

#define PERK_DRIVER_VERBOSITY_ERRORS	0x0001

#define PERK_DRIVER_VERBOSITY_STATUS	0x0002

#define PERK_DRIVER_VERBOSITY_USAGE	0x0004

#define PERK_DRIVER_CLONE_VECTOR	0x0008

#define PERK_DRIVER_VERSION		0x0010

#define PERK_DRIVER_DRY_RUN		0x0020

#define PERK_DRIVER_ANNOTATE_ALWAYS	0x1000

#define PERK_DRIVER_ANNOTATE_NEVER	0x2000

#define PERK_DRIVER_ANNOTATE_FULL	0x4000

/* unit action flags */

#define PERK_ACTION_MAP_READWRITE	0x0001

/* error flags */

#define PERK_ERROR_TOP_LEVEL		0x0001

#define PERK_ERROR_NESTED		0x0002

#define PERK_ERROR_CHILD		0x0004

#define PERK_ERROR_CUSTOM		0x0008

enum pe_custom_error {

	PERK_ERR_FLOW_ERROR,

	PERK_ERR_FLEE_ERROR,

	PERK_ERR_NULL_CONTEXT,

	PERK_ERR_NULL_IMAGE,

	PERK_ERR_INVALID_CONTEXT,

	PERK_ERR_INVALID_IMAGE,

	PERK_ERR_IMAGE_SIZE_ZERO,

	PERK_ERR_IMAGE_MALFORMED,

	PERK_ERR_BAD_DOS_HEADER,

	PERK_ERR_BAD_COFF_HEADER,

	PERK_ERR_BAD_IMAGE_TYPE,

	PERK_ERR_CAP,

};

struct pe_source_version {

	int		major;

	int		minor;

	int		revision;

	const char *	commit;

};

struct pe_raw_image {

	void *	addr;

	size_t	size;

};

struct pe_expsym {

	const char *	name;

	void *		eaddr;

	void *		maddr;

	uint32_t	roffset;

};

struct pe_image_summary {

	int32_t		nexpsyms;

	int32_t		nimplibs;

	int32_t		nrelocs;

};

struct pe_image_meta {

	struct pe_raw_image		image;

	struct pe_image_summary		summary;

	struct pe_meta_image_dos_hdr	dos;

	struct pe_meta_coff_file_hdr	coff;

	struct pe_meta_opt_hdr		opt;

	struct pe_meta_sec_hdr *	sectbl;

	struct pe_image_dos_hdr *	ados;

	struct pe_coff_file_hdr *	acoff;

	union  pe_opt_hdr *		aopt;

	struct pe_sec_hdr *		asectbl;

	struct pe_meta_export_hdr	edata;

	struct pe_export_hdr *		aedata;

	struct pe_meta_sec_hdr *	hedata;

	struct pe_meta_import_hdr *	idata;

	struct pe_import_hdr *		aidata;

	struct pe_meta_sec_hdr *	hidata;

};

struct pe_error_info {

	const struct pe_driver_ctx *	edctx;

	const struct pe_unit_ctx *	euctx;

	const char *			eunit;

	int				esyscode;

	int				elibcode;

	const char *			efunction;

	int				eline;

	unsigned			eflags;

	void *				eany;

};

struct pe_common_ctx {

	uint64_t			drvflags;

	uint64_t			actflags;

	uint64_t			fmtflags;

	const char *			output;

	const char *			srcdir;

	const char *			dstdir;

	const char *			tmpdir;

	const struct pe_symbol_ctx *	symctx;

	const struct pe_output_ctx *	outctx;

	const struct pe_linker_ctx *	lnkctx;

	const struct pe_server_ctx *	srvctx;

};

struct pe_driver_ctx {

	const char **			units;

	const char *			program;

	const char *			module;

	const struct pe_common_ctx *	cctx;

	struct pe_error_info **		errv;

	void *				any;

};

struct pe_unit_ctx {

	const char * const *		path;

	const struct pe_raw_image *	map;

	const struct pe_image_meta *	meta;

	void *				any;

};

/* package info */

perk_api				const struct pe_source_version * pe_source_version(void);

/* driver api */

perk_api int  pe_get_driver_ctx		(char ** argv, char ** envp, uint32_t flags, struct pe_driver_ctx **);

perk_api void pe_free_driver_ctx	(struct pe_driver_ctx *);

perk_api int  pe_get_unit_ctx		(const struct pe_driver_ctx *, const char * path, struct pe_unit_ctx **);

perk_api void pe_free_unit_ctx		(struct pe_unit_ctx *);

/* utility api */

perk_api int  pe_main			(int, char **, char **);

perk_api int  pe_output_image_type	(const struct pe_driver_ctx *, const struct pe_unit_ctx *, FILE *);

perk_api int  pe_output_export_symbols	(const struct pe_driver_ctx *, const struct pe_image_meta *, FILE *);

perk_api int  pe_output_import_libraries(const struct pe_driver_ctx *, const struct pe_image_meta *, FILE *);

perk_api int  pe_output_error_record	(const struct pe_driver_ctx *, const struct pe_error_info *);

perk_api int  pe_output_error_vector	(const struct pe_driver_ctx *);

/* high-level api */

perk_api int  pe_map_raw_image		(const struct pe_driver_ctx *, int fd, const char * path, int prot, struct pe_raw_image *);

perk_api int  pe_unmap_raw_image	(struct pe_raw_image *);

perk_api int  pe_get_image_meta		(const struct pe_driver_ctx *, const struct pe_raw_image *, struct pe_image_meta **);

perk_api void pe_free_image_meta	(struct pe_image_meta *);

perk_api int  pe_get_named_section_index(const struct pe_image_meta *, const char * name);

perk_api int  pe_get_block_section_index(const struct pe_image_meta *, const struct pe_block *);

perk_api int  pe_get_roffset_from_rva	(const struct pe_image_meta *, uint32_t rva, uint32_t * roffset);

perk_api int  pe_get_rva_from_roffset	(const struct pe_image_meta *, uint32_t roffset, uint32_t * rva);

perk_api int  pe_get_expsym_by_name	(const struct pe_image_meta *, const char * name, struct pe_expsym * optional);

perk_api int  pe_get_expsym_by_index	(const struct pe_image_meta *, unsigned index, struct pe_expsym * optional);

/* low-level api */

perk_api int  pe_read_dos_header	(const struct pe_image_dos_hdr *,	struct pe_meta_image_dos_hdr *);

perk_api int  pe_read_coff_header	(const struct pe_coff_file_hdr *,	struct pe_meta_coff_file_hdr *);

perk_api int  pe_read_optional_header	(const union  pe_opt_hdr *,		struct pe_meta_opt_hdr *);

perk_api int  pe_read_section_header	(const struct pe_sec_hdr *,		struct pe_meta_sec_hdr *);

perk_api int  pe_read_export_header	(const struct pe_export_hdr *,		struct pe_meta_export_hdr *);

perk_api int  pe_read_import_header	(const struct pe_import_hdr *,		struct pe_meta_import_hdr *);

perk_api int  pe_read_import_lookup_item(const union  pe_import_lookup_item *,	struct pe_meta_import_lookup_item *, uint32_t magic);

#ifdef __cplusplus

}

#endif

#endif