/*

 * Copyright 2021 Richard Hughes <richard@hughsie.com>

 *

 * SPDX-License-Identifier: LGPL-2.1-or-later

 */

#include "config.h"

#include "fu-acpi-phat-health-record.h"

#include "fu-acpi-phat-struct.h"

#include "fu-acpi-phat.h"

struct _FuAcpiPhatHealthRecord {

  FuFirmware parent_instance;

  guint8 am_healthy;

  gchar *guid;

  gchar *device_path;

};

G_DEFINE_TYPE(FuAcpiPhatHealthRecord, fu_acpi_phat_health_record, FU_TYPE_FIRMWARE)

static void

fu_acpi_phat_health_record_export(FuFirmware *firmware,

          FuFirmwareExportFlags flags,

          XbBuilderNode *bn)

{

  FuAcpiPhatHealthRecord *self = FU_ACPI_PHAT_HEALTH_RECORD(firmware);

  if (self->guid != NULL)

    fu_xmlb_builder_insert_kv(bn, "guid", self->guid);

  if (self->device_path != NULL)

    fu_xmlb_builder_insert_kv(bn, "device_path", self->device_path);

  if (self->am_healthy != 0)

    fu_xmlb_builder_insert_kx(bn, "am_healthy", self->am_healthy);

}

static gboolean

fu_acpi_phat_health_record_parse(FuFirmware *firmware,

         FuInputStream *stream,

         FuFirmwareParseFlags flags,

         GError **error)

{

  FuAcpiPhatHealthRecord *self = FU_ACPI_PHAT_HEALTH_RECORD(firmware);

  gsize streamsz = 0;

  guint16 rcdlen;

  guint32 dataoff;

  g_autoptr(FuStructAcpiPhatHealthRecord) st = NULL;

  /* sanity check record length */

  st = fu_struct_acpi_phat_health_record_parse_stream(stream, 0x0, error);

  if (st == NULL)

    return FALSE;

  rcdlen = fu_struct_acpi_phat_health_record_get_rcdlen(st);

  if (!fu_input_stream_size(stream, &streamsz, error))

    return FALSE;

  if (rcdlen != streamsz) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_INVALID_DATA,

          "record length not valid: %" G_GUINT16_FORMAT,

          rcdlen);

    return FALSE;

  }

  self->am_healthy = fu_struct_acpi_phat_health_record_get_flags(st);

  self->guid =

      fwupd_guid_to_string(fu_struct_acpi_phat_health_record_get_device_signature(st),

         FWUPD_GUID_FLAG_MIXED_ENDIAN);

  /* device path */

  dataoff = fu_struct_acpi_phat_health_record_get_device_specific_data(st);

  if (streamsz > 28) {

    gsize ubufsz; /* bytes */

    g_autoptr(GBytes) ubuf = NULL;

    /* header -> devicepath -> data */

    if (dataoff == 0x0) {

      ubufsz = streamsz - 28;

    } else if (dataoff < 28) {

      g_set_error(error,

            FWUPD_ERROR,

            FWUPD_ERROR_INVALID_DATA,

            "device specific data offset not valid: 0x%x",

            dataoff);

      return FALSE;

    } else {

      ubufsz = dataoff - 28;

    }

    if (ubufsz == 0) {

      g_set_error(error,

            FWUPD_ERROR,

            FWUPD_ERROR_INVALID_DATA,

            "device path not valid: %zu",

            ubufsz);

      return FALSE;

    }

    /* align and convert */

    ubuf = fu_input_stream_read_bytes(stream, 28, ubufsz, NULL, error);

    if (ubuf == NULL)

      return FALSE;

    self->device_path = fu_utf16_to_utf8_bytes(ubuf, G_LITTLE_ENDIAN, error);

    if (self->device_path == NULL)

      return FALSE;

  }

  /* success */

  return TRUE;

}

static GByteArray *

fu_acpi_phat_health_record_write(FuFirmware *firmware, GError **error)

{

  FuAcpiPhatHealthRecord *self = FU_ACPI_PHAT_HEALTH_RECORD(firmware);

  g_autoptr(FuStructAcpiPhatHealthRecord) st = fu_struct_acpi_phat_health_record_new();

  /* convert device path ahead of time */

  if (self->device_path != NULL) {

    g_autoptr(GByteArray) buf = fu_utf8_to_utf16_byte_array(self->device_path,

                  G_LITTLE_ENDIAN,

                  FU_UTF_CONVERT_FLAG_NONE,

                  error);

    if (buf == NULL)

      return NULL;

    g_byte_array_append(st->buf, buf->data, buf->len);

  }

  /* data record */

  if (self->guid != NULL) {

    fwupd_guid_t guid = {0x0};

    if (!fwupd_guid_from_string(self->guid, &guid, FWUPD_GUID_FLAG_MIXED_ENDIAN, error))

      return NULL;

    fu_struct_acpi_phat_health_record_set_device_signature(st, &guid);

  }

  fu_struct_acpi_phat_health_record_set_rcdlen(st, st->buf->len);

  fu_struct_acpi_phat_health_record_set_version(st, fu_firmware_get_version_raw(firmware));

  fu_struct_acpi_phat_health_record_set_flags(st, self->am_healthy);

  /* success */

  return g_steal_pointer(&st->buf);

}

static void

fu_acpi_phat_health_record_set_guid(FuAcpiPhatHealthRecord *self, const gchar *guid)

{

  g_free(self->guid);

  self->guid = g_strdup(guid);

}

static void

fu_acpi_phat_health_record_set_device_path(FuAcpiPhatHealthRecord *self, const gchar *device_path)

{

  g_free(self->device_path);

  self->device_path = g_strdup(device_path);

}

static gboolean

fu_acpi_phat_health_record_build(FuFirmware *firmware, XbNode *n, GError **error)

{

  FuAcpiPhatHealthRecord *self = FU_ACPI_PHAT_HEALTH_RECORD(firmware);

  const gchar *tmp;

  guint64 tmp64;

  /* optional properties */

  tmp = xb_node_query_text(n, "device_path", NULL);

  if (tmp != NULL)

    fu_acpi_phat_health_record_set_device_path(self, tmp);

  tmp = xb_node_query_text(n, "guid", NULL);

  if (tmp != NULL)

    fu_acpi_phat_health_record_set_guid(self, tmp);

  tmp64 = xb_node_query_text_as_uint(n, "am_healthy", NULL);

  if (tmp64 != G_MAXUINT64) {

    if (tmp64 > G_MAXUINT8) {

      g_set_error(error,

            FWUPD_ERROR,

            FWUPD_ERROR_NOT_SUPPORTED,

            "am_healthy value invalid, got 0x%x",

            (guint)tmp64);

      return FALSE;

    }

    self->am_healthy = (guint8)tmp64;

  }

  /* success */

  return TRUE;

}

static void

fu_acpi_phat_health_record_init(FuAcpiPhatHealthRecord *self)

{

  fu_firmware_add_flag(FU_FIRMWARE(self), FU_FIRMWARE_FLAG_NO_AUTO_DETECTION);

}

static void

fu_acpi_phat_health_record_finalize(GObject *object)

{

  FuAcpiPhatHealthRecord *self = FU_ACPI_PHAT_HEALTH_RECORD(object);

  g_free(self->guid);

  g_free(self->device_path);

  G_OBJECT_CLASS(fu_acpi_phat_health_record_parent_class)->finalize(object);

}

static void

fu_acpi_phat_health_record_class_init(FuAcpiPhatHealthRecordClass *klass)

{

  GObjectClass *object_class = G_OBJECT_CLASS(klass);

  FuFirmwareClass *firmware_class = FU_FIRMWARE_CLASS(klass);

  object_class->finalize = fu_acpi_phat_health_record_finalize;

  firmware_class->parse = fu_acpi_phat_health_record_parse;

  firmware_class->write = fu_acpi_phat_health_record_write;

  firmware_class->export = fu_acpi_phat_health_record_export;

  firmware_class->build = fu_acpi_phat_health_record_build;

  fu_firmware_set_size_max(firmware_class, 1 * FU_MB);

  fu_firmware_set_images_max(firmware_class, 2000);

}

FuFirmware *

fu_acpi_phat_health_record_new(void)

{

  return FU_FIRMWARE(g_object_new(FU_TYPE_ACPI_PHAT_HEALTH_RECORD, NULL));

}