#! /bin/bash

# This is bash which supports ANSI-C Quoting
nl=$'\n'

#
# This file is *NOT* generated by GNU Autoconf, but written by NIIBE Yutaka
#
# Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
#               Free Software Initiative of Japan
#
# This file is a part of Gnuk, a GnuPG USB Token implementation.
#
# Gnuk is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Gnuk is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

#
# Submodule check
#
if ! test -f ../chopstx/rules.mk; then
  echo "Submodule 'chopstx' not found" >&2
  echo "You might need: git submodule update --init" >&2
  exit 1
fi

# Default settings
help=no
vidpid=none
target=FST_01
with_dfu=default
debug=no
sys1_compat=yes
pinpad=no
certdo=no
hid_card_change=no
factory_reset=no
flash_override=""
# For emulation
prefix=/usr/local
exec_prefix='${prefix}'
libexecdir='${exec_prefix}/libexec'

# Revision number
if test -e ../.git; then
  if type git >/dev/null 2>&1; then
     REVISION=$(git describe --dirty="-modified")
  else
     # echo 'No git available, please install git'
     GIT_REVISION=$(sed -e 's/^\(.......\).*$/g\1/' "../.git/$(sed -e 's/^ref: //' ../.git/HEAD)")
     REVISION=$(cat ../VERSION)-$GIT_REVISION
  fi
else
  REVISION=$(cat ../VERSION)
fi

# Process each option
for option; do
  case $option in
  *=*)	optarg=$(expr "X$option" : '[^=]*=\(.*\)') ;;
  *)	optarg=yes ;;
  esac

  case $option in
  -h | --help)
    help=yes ;;
  --vidpid=*)
    vidpid=$optarg ;;
  --target=*)
    target=$optarg ;;
  --enable-debug)
    debug=yes ;;
  --disable-debug)
    debug=no ;;
  --enable-pinpad=*)
    pinpad=$optarg ;;
  --disable-pinpad)
    pinpad=no ;;
  --enable-certdo)
    certdo=yes ;;
  --disable-certdo)
    certdo=no ;;
  --enable-hid-card-change)
    hid_card_change=yes ;;
  --disable-hid-card-change)
    hid_card_change=no ;;
  --enable-sys1-compat)
    sys1_compat=yes ;;
  --disable-sys1-compat)
    sys1_compat=no ;;
  --enable-factory-reset)
    factory_reset=yes ;;
  --disable-factory-reset)
    factory_reset=no ;;
  --with-dfu)
    with_dfu=yes ;;
  --without-dfu)
    with_dfu=no ;;
  #
  # For emulation
  #
  --prefix=*)
    prefix=optarg ;;
  --exec-prefix=*)
    exec_prefix=optarg ;;
  --libexecdir=*)
    libexecdir=optarg ;;
  *)
    echo "Unrecognized option \`$option'" >&2
    echo "Try \`$0 --help' for more information." >&2
    exit 1
    ;;
  esac
done

if test "$help" = "yes"; then
  cat <<EOF
Usage: $0 [OPTION]...

Defaults for the options are specified in brackets.

Configuration:
  -h, --help		display this help and exit	[no]
  --vidpid=VID:PID	specify vendor/product ID	[<NONE>]
  --target=TARGET	specify target			[FST_01]
			supported targets are:
			   FST_01
			   FST_01G
			   OLIMEX_STM32_H103
			   MAPLE_MINI
			   ST_DONGLE
			   ST_NUCLEO_F103
			   NITROKEY_START
			   BLUE_PILL
			   STM8S_DISCOVERY
			   CQ_STARM
			   STM32_PRIMER2
			   STBEE
			   STBEE_MINI
			   FST_01_00 (unreleased version with 8MHz XTAL)
  --enable-factory-reset
			support life cycle management	[no]
  --enable-debug	debug with virtual COM port	[no]
  --enable-pinpad=cir
			PIN entry support		[no]
  --enable-certdo	support CERT.3 data object	[no]
  --enable-sys1-compat	enable SYS 1.0 compatibility	[yes]
			   executable is target dependent
  --disable-sys1-compat	disable SYS 1.0 compatibility	[no]
			   executable is target independent
			   but requires SYS 2.0 or newer
  --with-dfu		build image for DFU 		[<target specific>]
EOF
  exit 0
fi

BOARD_HEADER_FILE=board-$(echo $target | tr '_[:upper:]' '-[:lower:]').h
echo "Header file is: $BOARD_HEADER_FILE"
ln -sf "../chopstx/board/$BOARD_HEADER_FILE" board.h

# Flash page size in byte
FLASH_PAGE_SIZE=1024
# Flash memory size in KiB
FLASH_SIZE=128
# Memory size in KiB
MEMORY_SIZE=20

# Settings for TARGET
case $target in
BLUE_PILL|STM8S_DISCOVERY)
  # It's 64KB version of STM32F103, but actually has 128KB
  flash_override="-DSTM32F103_OVERRIDE_FLASH_SIZE_KB=128"
  ;;
CQ_STARM|STBEE_MINI)
  if test "$with_dfu" = "default"; then
    with_dfu=yes;
  fi  ;;
STM32_PRIMER2)
  FLASH_PAGE_SIZE=2048
  FLASH_SIZE=512
  MEMORY_SIZE=64
  ;;
STBEE)
  FLASH_PAGE_SIZE=2048
  FLASH_SIZE=512
  MEMORY_SIZE=64
  if test "$with_dfu" = "default"; then
    with_dfu=yes;
  fi  ;;
*)
  ;;
esac

if test "$target" = "GNU_LINUX"; then
  ldscript=""
  chip="gnu-linux"
  emulation="yes"
  cross=""
  mcu="none"
  def_emulation="-DGNU_LINUX_EMULATION"
  enable_hexoutput=""
  libs="-lpthread"
else
  ldscript="gnuk.ld"
  chip="stm32f103"
  emulation=""
  cross="arm-none-eabi-"
  mcu="cortex-m3"
  def_emulation=""
  enable_hexoutput=yes
  libs=""
fi

if test "$emulation" = "yes"; then
  if test "$vidpid" = "none"; then
    vidpid=0000:0000
  else
    echo "Please don't specify VID:PID for emulation at compile time;"
    echo "It is a user who should specify VID:PID at run time."
    exit 1
  fi
else
  if test "$vidpid" = "none"; then
    echo "Please specify Vendor ID and Product ID by --vidpid option." >&2
  exit 1
  fi
fi

# --enable-debug option
if test "$debug" = "yes"; then
  DEBUG_MAKE_OPTION="ENABLE_DEBUG=1"
  DEBUG_DEFINE="#define DEBUG 1"
  echo "Debug option enabled"
else
  DEBUG_MAKE_OPTION="# ENABLE_DEBUG=1"
  DEBUG_DEFINE="#undef DEBUG"
  echo "Debug option disabled"
fi

# --with-dfu option
if test "$with_dfu" = "yes"; then
  if test "$target" = "FST_01" -o "$target" = "FST_01G" \
     -o "$target" = "FST_01_00"; then
      echo "FST-01 doesn't have DFU loader, you should not use --with-dfu." >&2
      exit 1
  fi
  echo "Configured for DFU"
  ORIGIN=0x08003000
  FLASH_SIZE=$((FLASH_SIZE - 12))
  DFU_DEFINE="#define DFU_SUPPORT 1"
else
  with_dfu=no
  echo "Configured for bare system (no-DFU)"
  ORIGIN=0x08000000
  DFU_DEFINE="#undef DFU_SUPPORT"
fi

# --enable-pinpad option
if test "$pinpad" = "no"; then
  PINPAD_MAKE_OPTION="# ENABLE_PINPAD="
  PINPAD_DEFINE="#undef PINPAD_SUPPORT"
  PINPAD_MORE_DEFINE=""
  echo "PIN pad option disabled"
else
  PINPAD_MAKE_OPTION="ENABLE_PINPAD=$pinpad"
  PINPAD_DEFINE="#define PINPAD_SUPPORT 1"
  PINPAD_MORE_DEFINE="#define PINPAD_${pinpad^^[a-z]}_SUPPORT 1"
  echo "PIN pad option enabled ($pinpad)"
fi

# --enable-certdo option
if test "$certdo" = "yes"; then
  CERTDO_DEFINE="#define CERTDO_SUPPORT 1"
  echo "CERT.3 Data Object is supported"
else
  CERTDO_DEFINE="#undef CERTDO_SUPPORT"
  echo "CERT.3 Data Object is NOT supported"
fi

# --enable-hid-card-change option
if test "$hid_card_change" = "yes"; then
  HID_CARD_CHANGE_DEFINE="#define HID_CARD_CHANGE_SUPPORT 1"
  echo "Card insert/removal by HID device is supported"
else
  HID_CARD_CHANGE_DEFINE="#undef HID_CARD_CHANGE_SUPPORT"
  echo "Card insert/removal by HID device is NOT supported"
fi

# --enable-factory-reset option
if test "$factory_reset" = "yes"; then
  LIFE_CYCLE_MANAGEMENT_DEFINE="#define LIFE_CYCLE_MANAGEMENT_SUPPORT 1"
  echo "Life cycle management is supported"
else
  LIFE_CYCLE_MANAGEMENT_DEFINE="#undef LIFE_CYCLE_MANAGEMENT_SUPPORT"
  echo "Life cycle management is NOT supported"
fi

### !!! Replace following string of "FSIJ" to yours !!! ####
SERIALNO="FSIJ-$(sed -e 's%^[^/]*/%%' <../VERSION)-"

SERIALNO_STR_LEN_DEFINE="#define SERIALNO_STR_LEN ${#SERIALNO}"


if test "$sys1_compat" = "yes"; then
  CONFIG="$target:dfu=$with_dfu:debug=$debug:pinpad=$pinpad:certdo=$certdo:factory_reset=$factory_reset"
else
  if test "$with_dfu" = "yes"; then
    echo "Common binary can't support DFU loader, don't use --with-dfu." >&2
    exit 1
  fi
  # Override settings for common binary.  Safer side.
  FLASH_PAGE_SIZE=2048
  FLASH_SIZE=128
  MEMORY_SIZE=20
  CONFIG="common:debug=$debug:pinpad=$pinpad:certdo=$certdo:factory_reset=$factory_reset"
fi

output_vid_pid_version () {
  echo "$VIDPID" | sed -n -e "s%^\([0-9a-f][0-9a-f]\)\([0-9a-f][0-9a-f]\):\([0-9a-f][0-9a-f]\)\([0-9a-f][0-9a-f]\)$%  0x\2, 0x\1, /* idVendor  */\\${nl}  0x\4, 0x\3, /* idProduct */%p"
  echo "$VERSION" | sed -n -e "s%^\([0-9a-f][0-9a-f]\)\([0-9a-f][0-9a-f]\)$%  0x\2, 0x\1, /* bcdDevice */%p"
}

output_vendor_product_serial_strings () {
  name=$1

  echo "static const uint8_t ${name}string_vendor[] = {"
  echo "  ${#VENDOR}*2+2,                       /* bLength */"
  echo "  STRING_DESCRIPTOR,            /* bDescriptorType */"
  echo "  /* Manufacturer: \"$VENDOR\" */"
  echo "$VENDOR" | sed -e "s/\(........\)/\1\\${nl}/g" | sed -n -e "s/\(.\)/'\1', 0, /g" -e "s/^/  /" -e "/^  ./s/ $//p"
  echo '};'
  echo
  echo "static const uint8_t ${name}string_product[] = {"
  echo "  ${#PRODUCT}*2+2,                      /* bLength */"
  echo "  STRING_DESCRIPTOR,            /* bDescriptorType */"
  echo "  /* Product name: \"$PRODUCT\" */"
  echo "$PRODUCT" | sed -e "s/\(........\)/\1\\${nl}/g" | sed -n -e "s/\(.\)/'\1', 0, /g" -e "s/^/  /" -e "/^  ./s/ $//p"
  echo '};'

  if test -n "$name"; then
  echo
  echo "const uint8_t ${name}string_serial[] = {"
  echo "  ${#SERIALNO}*2+2+16,                  /* bLength */"
  echo "  STRING_DESCRIPTOR,            /* bDescriptorType */"
  echo "  /* Serial number: \"$SERIALNO\" */"
  echo "$SERIALNO" | sed -e "s/\(........\)/\1\\${nl}/g" | sed -n -e "s/\(.\)/'\1', 0, /g" -e "s/^/  /" -e "/^  ./s/ $//p"
  if test "$emulation" = "yes"; then
    echo "  'E', 0, 'M', 0, 'U', 0, 'L', 0,"
    echo "  'A', 0, 'T', 0, 'E', 0, 'D', 0,"
  else
    echo "  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,"
    echo "  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,"
  fi
  echo '};'
  echo
  echo '#ifdef USB_STRINGS_FOR_GNUK'
  echo "static const uint8_t ${name}revision_detail[] = {"
  echo "  ${#REVISION}*2+2,                     /* bLength */"
  echo "  STRING_DESCRIPTOR,            /* bDescriptorType */"
  echo "  /* revision detail: \"$REVISION\" */"
  echo "$REVISION" | sed -e "s/\(........\)/\1\\${nl}/g" | sed -n -e "s/\(.\)/'\1', 0, /g" -e "s/^/  /" -e "/^  ./s/ $//p"
  echo '};'
  echo
  echo "static const uint8_t ${name}config_options[] = {"
  echo "  ${#CONFIG}*2+2,                       /* bLength */"
  echo "  STRING_DESCRIPTOR,            /* bDescriptorType */"
  echo "  /* configure options: \"$CONFIG\" */"
  echo $CONFIG | sed -e "s/\(........\)/\1\\${nl}/g" | sed -n -e "s/\(.\)/'\1', 0, /g" -e "s/^/  /" -e "/^  ./s/ $//p"
  echo '};'
  echo '#endif'
  fi
}

if !(IFS="	"
  while read -r VIDPID VERSION PRODUCT VENDOR; do
    if test "$vidpid" = "$VIDPID"; then
      output_vid_pid_version > usb-vid-pid-ver.c.inc
      output_vendor_product_serial_strings gnuk_ >usb-strings.c.inc
      exit 0
    fi
  done; exit 1) < ../GNUK_USB_DEVICE_ID
then
  echo "Please specify valid Vendor ID and Product ID." >&2
  echo "Check ../GNUK_USB_DEVICE_ID." >&2
  exit 1
fi

if test "$sys1_compat" = "no"; then
    # Disable when you are sure that it's sys version 3.0 or later.
    # Note that Gnuk 1.0 and NeuG (until 0.06) uses sys version 1.0.
    # Disabling the compatibility, executable will be target independent,
    # assuming the clock initialization will be done by clock_init in 
    # SYS.
    use_sys3="-DUSE_SYS3"
else
    use_sys3=""
fi


(echo "CHIP=$chip";
 echo "EMULATION=$emulation";
 echo "CROSS=$cross";
 echo "MCU=$mcu";
 echo "DEFS=$use_sys3 $flash_override $def_emulation";
 echo "LDSCRIPT=$ldscript";
 echo "LIBS=$libs";
 echo "$DEBUG_MAKE_OPTION";
 echo "$PINPAD_MAKE_OPTION";
 echo "ENABLE_FRAUCHEKY=$enable_fraucheky";
 echo "ENABLE_OUTPUT_HEX=$enable_hexoutput"
 if test "$emulation" = "yes"; then
   echo "prefix=$prefix"
   echo "exec_prefix=$exec_prefix"
   echo "libexecdir=$libexecdir"
 fi
)	> config.mk

if test "$certdo" = "yes"; then
  sed -e "/^@CERTDO_SUPPORT_START@$/ d" -e "/^@CERTDO_SUPPORT_END@$/ d" \
      -e "s/@ORIGIN@/$ORIGIN/" -e "s/@FLASH_SIZE@/$FLASH_SIZE/" \
      -e "s/@MEMORY_SIZE@/$MEMORY_SIZE/" \
      -e "s/@FLASH_PAGE_SIZE@/$FLASH_PAGE_SIZE/" \
	< gnuk.ld.in > gnuk.ld
else
  sed -e "/^@CERTDO_SUPPORT_START@$/,/^@CERTDO_SUPPORT_END@$/ d" \
      -e "s/@ORIGIN@/$ORIGIN/" -e "s/@FLASH_SIZE@/$FLASH_SIZE/" \
      -e "s/@MEMORY_SIZE@/$MEMORY_SIZE/" \
      -e "s/@FLASH_PAGE_SIZE@/$FLASH_PAGE_SIZE/" \
	< gnuk.ld.in > gnuk.ld
fi
sed -e "s/@DEBUG_DEFINE@/$DEBUG_DEFINE/" \
    -e "s/@DFU_DEFINE@/$DFU_DEFINE/" \
    -e "s/@PINPAD_DEFINE@/$PINPAD_DEFINE/" \
    -e "s/@PINPAD_MORE_DEFINE@/$PINPAD_MORE_DEFINE/" \
    -e "s/@CERTDO_DEFINE@/$CERTDO_DEFINE/" \
    -e "s/@HID_CARD_CHANGE_DEFINE@/$HID_CARD_CHANGE_DEFINE/" \
    -e "s/@LIFE_CYCLE_MANAGEMENT_DEFINE@/$LIFE_CYCLE_MANAGEMENT_DEFINE/" \
    -e "s/@SERIALNO_STR_LEN_DEFINE@/$SERIALNO_STR_LEN_DEFINE/" \
	< config.h.in > config.h
exit 0