/***************************************************************/

/*  perk: PE Resource Kit                                      */

/*  Copyright (C) 2015--2021  SysDeer Technologies, LLC        */

/*  Released under GPLv2 and GPLv3; see COPYING.PERK.          */

/***************************************************************/

#include <stdio.h>

#include <unistd.h>

#include <perk/perk.h>

#include <perk/perk_output.h>

#include "perk_driver_impl.h"

#include "perk_dprintf_impl.h"

#ifndef PERK_DRIVER_FLAGS

#define PERK_DRIVER_FLAGS	PERK_DRIVER_VERBOSITY_ERRORS \

				| PERK_DRIVER_VERBOSITY_USAGE

#endif

static const char vermsg[] = "%s%s%s (git://midipix.org/perk): "

			     "version %s%d.%d.%d%s.\n"

			     "[commit reference: %s%s%s]\n";

static const char * const pe_ver_color[6] = {

		"\x1b[1m\x1b[35m","\x1b[0m",

		"\x1b[1m\x1b[32m","\x1b[0m",

		"\x1b[1m\x1b[34m","\x1b[0m"

};

static const char * const pe_ver_plain[6] = {

		"","",

		"","",

		"",""

};

static ssize_t pe_version(struct pe_driver_ctx * dctx, int fdout)

{

	const struct pe_source_version * verinfo;

	const char * const * verclr;

	verinfo = pe_source_version();

	verclr  = isatty(fdout) ? pe_ver_color : pe_ver_plain;

	return pe_dprintf(

			fdout,vermsg,

			verclr[0],dctx->program,verclr[1],

			verclr[2],verinfo->major,verinfo->minor,

			verinfo->revision,verclr[3],

			verclr[4],verinfo->commit,verclr[5]);

}

static void pe_perform_hdrdump_actions(

	const struct pe_driver_ctx *	dctx,

	struct pe_unit_ctx *		uctx)

{

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_IMAGE_DOS_HEADER)

		pe_hdrdump_image_dos_hdr(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_COFF_IMAGE_HEADER)

		pe_hdrdump_coff_image_hdr(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_COFF_OBJECT_HEADER)

		pe_hdrdump_coff_object_hdr(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_COFF_OPT_HEADER)

		pe_hdrdump_coff_opt_hdr(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_SECTION_TABLE)

		pe_hdrdump_sec_tbl(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_EXPORT_HEADER)

		pe_hdrdump_export_hdr(dctx,uctx->meta);

	if (dctx->cctx->hdrdump & PERK_HDRDUMP_IMPORT_TABLE)

		pe_hdrdump_import_tbl(dctx,uctx->meta);

}

static void pe_perform_unit_actions(

	const struct pe_driver_ctx *	dctx,

	struct pe_unit_ctx *		uctx)

{

	uint64_t flags = dctx->cctx->fmtflags;

	if (flags & PERK_OUTPUT_IMAGE_CATEGORY)

		pe_output_image_category(dctx,uctx->meta);

	if (flags & PERK_OUTPUT_IMAGE_SECTIONS)

		pe_output_image_sections(dctx,uctx->meta);

	if (flags & PERK_OUTPUT_IMAGE_SYMBOLS)

		pe_output_image_symbols(dctx,uctx->meta);

	if (flags & PERK_OUTPUT_IMAGE_STRINGS)

		pe_output_image_strings(dctx,uctx->meta);

	if (flags & PERK_OUTPUT_EXPORT_SYMS)

		pe_output_export_symbols(dctx,uctx->meta);

	if ((flags & PERK_OUTPUT_IMPORT_LIBS) || (flags & PERK_OUTPUT_IMPORT_SYMS))

		pe_output_import_libraries(dctx,uctx->meta);

	if ((flags & PERK_OUTPUT_MDSO_LIBS) || (flags & PERK_OUTPUT_MDSO_SYMS))

		pe_output_mdso_libraries(dctx,uctx->meta);

	if (dctx->cctx->hdrdump)

		pe_perform_hdrdump_actions(dctx,uctx);

}

static int pe_exit(struct pe_driver_ctx * dctx, int ret)

{

	pe_output_error_vector(dctx);

	pe_free_driver_ctx(dctx);

	return ret;

}

int pe_main(char ** argv, char ** envp, const struct pe_fd_ctx * fdctx)

{

	int			ret;

	int			fdout;

	uint64_t		flags;

	struct pe_driver_ctx *	dctx;

	struct pe_unit_ctx *	uctx;

	const char **		unit;

	flags = PERK_DRIVER_FLAGS;

	fdout = fdctx ? fdctx->fdout : STDOUT_FILENO;

	if ((ret = pe_get_driver_ctx(argv,envp,flags,fdctx,&dctx)))

		return (ret == PERK_USAGE)

			? !argv || !argv[0] || !argv[1]

			: PERK_ERROR;

	if (dctx->cctx->drvflags & PERK_DRIVER_VERSION)

		if ((pe_version(dctx,fdout)) < 0)

			return pe_exit(dctx,PERK_ERROR);

	for (unit=dctx->units; *unit; unit++) {

		if (!(pe_get_unit_ctx(dctx,*unit,&uctx))) {

			pe_perform_unit_actions(dctx,uctx);

			pe_free_unit_ctx(uctx);

		}

	}

	return pe_exit(dctx,dctx->errv[0] ? PERK_ERROR : PERK_OK);

}