// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: apmain - Main module for the acpidump utility
 *
 * Copyright (C) 2000 - 2025, Intel Corp.
 *
 *****************************************************************************/

#define _DECLARE_GLOBALS
#include "acpidump.h"

/*
 * acpidump - A portable utility for obtaining system ACPI tables and dumping
 * them in an ASCII hex format suitable for binary extraction via acpixtract.
 *
 * Obtaining the system ACPI tables is an OS-specific operation.
 *
 * This utility can be ported to any host operating system by providing a
 * module containing system-specific versions of these interfaces:
 *
 *      acpi_os_get_table_by_address
 *      acpi_os_get_table_by_index
 *      acpi_os_get_table_by_name
 *
 * See the ACPICA Reference Guide for the exact definitions of these
 * interfaces. Also, see these ACPICA source code modules for example
 * implementations:
 *
 *      source/os_specific/service_layers/oswintbl.c
 *      source/os_specific/service_layers/oslinuxtbl.c
 */

/* Local prototypes */

static void ap_display_usage(void);

static int ap_do_options(int argc, char **argv);

static int ap_insert_action(char *argument, u32 to_be_done);

/* Table for deferred actions from command line options */

struct ap_dump_action action_table[AP_MAX_ACTIONS];
u32 current_action = 0;

#define AP_UTILITY_NAME             "ACPI Binary Table Dump Utility"
#define AP_SUPPORTED_OPTIONS        "?a:bc:f:hn:o:r:sv^xz"

/******************************************************************************
 *
 * FUNCTION:    ap_display_usage
 *
 * DESCRIPTION: Usage message for the acpi_dump utility
 *
 ******************************************************************************/

static void ap_display_usage(void)
{

        ACPI_USAGE_HEADER("acpidump [options]");

        ACPI_OPTION("-b", "Dump tables to binary files");
        ACPI_OPTION("-h -?", "This help message");
        ACPI_OPTION("-o <File>", "Redirect output to file");
        ACPI_OPTION("-r <Address>", "Dump tables from specified RSDP");
        ACPI_OPTION("-s", "Print table summaries only");
        ACPI_OPTION("-v", "Display version information");
        ACPI_OPTION("-vd", "Display build date and time");
        ACPI_OPTION("-z", "Verbose mode");

        ACPI_USAGE_TEXT("\nTable Options:\n");

        ACPI_OPTION("-a <Address>", "Get table via a physical address");
        ACPI_OPTION("-c <on|off>", "Turning on/off customized table dumping");
        ACPI_OPTION("-f <BinaryFile>", "Get table via a binary file");
        ACPI_OPTION("-n <Signature>", "Get table via a name/signature");
        ACPI_OPTION("-x", "Do not use but dump XSDT");
        ACPI_OPTION("-x -x", "Do not use or dump XSDT");

        ACPI_USAGE_TEXT("\n"
                        "Invocation without parameters dumps all available tables\n"
                        "Multiple mixed instances of -a, -f, and -n are supported\n\n");
}

/******************************************************************************
 *
 * FUNCTION:    ap_insert_action
 *
 * PARAMETERS:  argument            - Pointer to the argument for this action
 *              to_be_done          - What to do to process this action
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Add an action item to the action table
 *
 ******************************************************************************/

static int ap_insert_action(char *argument, u32 to_be_done)
{

        /* Insert action and check for table overflow */

        action_table[current_action].argument = argument;
        action_table[current_action].to_be_done = to_be_done;

        current_action++;
        if (current_action > AP_MAX_ACTIONS) {
                fprintf(stderr, "Too many table options (max %d)\n",
                        AP_MAX_ACTIONS);
                return (-1);
        }

        return (0);
}

/******************************************************************************
 *
 * FUNCTION:    ap_do_options
 *
 * PARAMETERS:  argc/argv           - Standard argc/argv
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Command line option processing. The main actions for getting
 *              and dumping tables are deferred via the action table.
 *
 *****************************************************************************/

static int ap_do_options(int argc, char **argv)
{
        int j;
        acpi_status status;

        /* Command line options */

        while ((j =
                acpi_getopt(argc, argv, AP_SUPPORTED_OPTIONS)) != ACPI_OPT_END)
                switch (j) {
                        /*
                         * Global options
                         */
                case 'b':       /* Dump all input tables to binary files */

                        gbl_binary_mode = TRUE;
                        continue;

                case 'c':       /* Dump customized tables */

                        if (!strcmp(acpi_gbl_optarg, "on")) {
                                gbl_dump_customized_tables = TRUE;
                        } else if (!strcmp(acpi_gbl_optarg, "off")) {
                                gbl_dump_customized_tables = FALSE;
                        } else {
                                fprintf(stderr,
                                        "%s: Cannot handle this switch, please use on|off\n",
                                        acpi_gbl_optarg);
                                return (-1);
                        }
                        continue;

                case 'h':
                case '?':

                        ap_display_usage();
                        return (1);

                case 'o':       /* Redirect output to a single file */

                        if (ap_open_output_file(acpi_gbl_optarg)) {
                                return (-1);
                        }
                        continue;

                case 'r':       /* Dump tables from specified RSDP */

                        status =
                            acpi_ut_strtoul64(acpi_gbl_optarg, &gbl_rsdp_base);
                        if (ACPI_FAILURE(status)) {
                                fprintf(stderr,
                                        "%s: Could not convert to a physical address\n",
                                        acpi_gbl_optarg);
                                return (-1);
                        }
                        continue;

                case 's':       /* Print table summaries only */

                        gbl_summary_mode = TRUE;
                        continue;

                case 'x':       /* Do not use XSDT */

                        if (!acpi_gbl_do_not_use_xsdt) {
                                acpi_gbl_do_not_use_xsdt = TRUE;
                        } else {
                                gbl_do_not_dump_xsdt = TRUE;
                        }
                        continue;

                case 'v':       /* -v: (Version): signon already emitted, just exit */

                        switch (acpi_gbl_optarg[0]) {
                        case '^':       /* -v: (Version) */

                                fprintf(stderr,
                                        ACPI_COMMON_SIGNON(AP_UTILITY_NAME));
                                return (1);

                        case 'd':

                                fprintf(stderr,
                                        ACPI_COMMON_SIGNON(AP_UTILITY_NAME));
                                printf(ACPI_COMMON_BUILD_TIME);
                                return (1);

                        default:

                                printf("Unknown option: -v%s\n",
                                       acpi_gbl_optarg);
                                return (-1);
                        }
                        break;

                case 'z':       /* Verbose mode */

                        gbl_verbose_mode = TRUE;
                        fprintf(stderr, ACPI_COMMON_SIGNON(AP_UTILITY_NAME));
                        continue;

                        /*
                         * Table options
                         */
                case 'a':       /* Get table by physical address */

                        if (ap_insert_action
                            (acpi_gbl_optarg, AP_DUMP_TABLE_BY_ADDRESS)) {
                                return (-1);
                        }
                        break;

                case 'f':       /* Get table from a file */

                        if (ap_insert_action
                            (acpi_gbl_optarg, AP_DUMP_TABLE_BY_FILE)) {
                                return (-1);
                        }
                        break;

                case 'n':       /* Get table by input name (signature) */

                        if (ap_insert_action
                            (acpi_gbl_optarg, AP_DUMP_TABLE_BY_NAME)) {
                                return (-1);
                        }
                        break;

                default:

                        ap_display_usage();
                        return (-1);
                }

        /* If there are no actions, this means "get/dump all tables" */

        if (current_action == 0) {
                if (ap_insert_action(NULL, AP_DUMP_ALL_TABLES)) {
                        return (-1);
                }
        }

        return (0);
}

/******************************************************************************
 *
 * FUNCTION:    main
 *
 * PARAMETERS:  argc/argv           - Standard argc/argv
 *
 * RETURN:      Status
 *
 * DESCRIPTION: C main function for acpidump utility
 *
 ******************************************************************************/

#if !defined(_GNU_EFI) && !defined(_EDK2_EFI)
int ACPI_SYSTEM_XFACE main(int argc, char *argv[])
#else
int ACPI_SYSTEM_XFACE acpi_main(int argc, char *argv[])
#endif
{
        int status = 0;
        struct ap_dump_action *action;
        u32 file_size;
        u32 i;

        ACPI_DEBUG_INITIALIZE();        /* For debug version only */
        acpi_os_initialize();
        gbl_output_file = ACPI_FILE_OUT;
        acpi_gbl_integer_byte_width = 8;

        /* Process command line options */

        status = ap_do_options(argc, argv);
        if (status > 0) {
                return (0);
        }
        if (status < 0) {
                return (status);
        }

        /* Get/dump ACPI table(s) as requested */

        for (i = 0; i < current_action; i++) {
                action = &action_table[i];
                switch (action->to_be_done) {
                case AP_DUMP_ALL_TABLES:

                        status = ap_dump_all_tables();
                        break;

                case AP_DUMP_TABLE_BY_ADDRESS:

                        status = ap_dump_table_by_address(action->argument);
                        break;

                case AP_DUMP_TABLE_BY_NAME:

                        status = ap_dump_table_by_name(action->argument);
                        break;

                case AP_DUMP_TABLE_BY_FILE:

                        status = ap_dump_table_from_file(action->argument);
                        break;

                default:

                        fprintf(stderr,
                                "Internal error, invalid action: 0x%X\n",
                                action->to_be_done);
                        return (-1);
                }

                if (status) {
                        return (status);
                }
        }

        if (gbl_output_filename) {
                if (gbl_verbose_mode) {

                        /* Summary for the output file */

                        file_size = cm_get_file_size(gbl_output_file);
                        fprintf(stderr,
                                "Output file %s contains 0x%X (%u) bytes\n\n",
                                gbl_output_filename, file_size, file_size);
                }

                fclose(gbl_output_file);
        }

        return (status);
}