#!/bin/sh
#
# Copyright 2009 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# This script is part of the google-chrome package.
#
# It creates the repository configuration file for package updates, since
# we cannot do this during the google-chrome installation since the repository
# is locked.
#
# This functionality can be controlled by creating the $DEFAULTS_FILE and
# setting "repo_add_once" to "true" or "false" as desired. An empty
# $DEFAULTS_FILE is the same as setting the value to "false".

# System-wide package configuration.
DEFAULTS_FILE="/etc/default/google-chrome"

# sources.list setting for google-chrome updates.
REPOCONFIG="https://dl.google.com/linux/chrome/rpm/stable"
REPOCONFIGREGEX=""
# This file is automatically generated by update_key_include.py
# Do not edit this file directly.

# pub   rsa4096 2016-04-12 [SC]
#       EB4C1BFD4F042F6DDDCCEC917721F63BD38B4796
# uid           [ unknown] Google Inc. (Linux Packages Signing Authority) <linux-packages-keymaster@google.com>
# sub   rsa4096 2024-01-30 [S] [expires: 2027-01-29]
# sub   rsa4096 2025-01-07 [S] [expires: 2028-01-07]
# sub   rsa4096 2026-03-10 [S] [expires: 2029-03-09]
PGP_KEY_DATA=$(cat <<KEYDATA
mQINBFcMjNMBEAC6Wr5QuLIFgz1V1EFPlg8ty2TsjQEl4VWftUAqWlMevJFWvYEx
BOsOZ6kNFfBfjAxgJNWTkxZrHzDl74R7KW/nUx6X57bpFjUyRaB8F3/NpWKSeIGS
pJT+0m2SgUNhLAn1WY/iNJGNaMl7lgUnaP+/ZsSNT9hyTBiH3Ev5VvAtMGhVI/u8
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BFmMK6i4fJU+ux17Rgvnc9tDSCzFZ1/4f43EZ41uTmmNXIDsaPCqwjvSS5ICadt2
xeqTWDlzONUpOs5yBjF1cfJSdVxsfshvln2JXUwgIdKl4DLbZybuNFXnPffNLb2v
PtRJHO48O2UbeXS8n27PcuMoLRd7+r7TsqG2vBH4t/cB/1vsvWMbqnQlaJ5VsjeW
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0VKRfNSbDRGP+JSZlxIhNwzxA5IrpQ==
KEYDATA
)

PGP_KEY_CHECKSUM="=djNO"

PGP_SUBKEYS="32EE5355A6BC6E42 FD533C07C264648F 1D09C015006FEAB8"

# Install the repository signing key (see also:
# https://www.google.com/linuxrepositories/)
install_rpm_key() {
  KEY_PACKAGE="gpg-pubkey-d38b4796-570c8cd3"
  # Check to see if all keys already exists.
  # Make sure all the most recent signing subkeys are installed.
  NEED_KEYS=0

  for SUB_KEY in $PGP_SUBKEYS; do
    rpm -q ${KEY_PACKAGE} --qf '%{Pubkeys:armor}\n' | \
      gpg --with-colons - 2>/dev/null | \
      grep -q "$SUB_KEY"
    if [ "$?" -ne "0" ]; then
      NEED_KEYS=1
    fi
  done

  if [ $NEED_KEYS -ne 1 ]; then
    return
  fi

  # Make sure no older version of the key is installed because it appears
  # 'rpm --import' won't overwrite an existing key package.
  rpm -q ${KEY_PACKAGE} >/dev/null 2>&1
  if [ "$?" -eq "0" ]; then
    # Note, if this is run during the package install, it will fail because rpm
    # can't recursively run rpm, but it should work when run later as part of
    # the installed cron job (and probably nothing needs the new keys before
    # then).
    rpm -e --allmatches ${KEY_PACKAGE} >/dev/null 2>&1 || return
  fi

  # RPM on Mandriva 2009 is dumb and does not understand "rpm --import -"
  TMPKEY=$(mktemp /tmp/google.sig.XXXXXX)
  if [ -n "$TMPKEY" ]; then
    cat > "$TMPKEY" <<KEYDATA
-----BEGIN PGP PUBLIC KEY BLOCK-----

$PGP_KEY_DATA
$PGP_KEY_CHECKSUM
-----END PGP PUBLIC KEY BLOCK-----
KEYDATA
    rpm --import "$TMPKEY"
    rc=$?
    rm -f "$TMPKEY"
    if [ "$rc" -eq "0" ]; then
      return 0
    fi
  fi
  return 1
}

determine_rpm_package_manager() {
  local RELEASE

  # Modern method using os-release(5)
  if [ -f "/etc/os-release" ]; then
    RELEASE=$(. "/etc/os-release"; echo "$ID")
    case $RELEASE in
    "fedora"|"rhel"|"centos"|"amzn"|"mageia"|"openmandriva")
      PACKAGEMANAGERS=(yum)
      ;;
    "suse"|"sles"|"sled"|"opensuse"|"opensuse-leap"|"opensuse-tumbleweed")
      PACKAGEMANAGERS=(zypp)
      ;;
    esac
  fi

  if [ "$PACKAGEMANAGERS" ]; then
    return
  fi

  # Fallback method using lsb_release(1)
  LSB_RELEASE="$(command -v lsb_release 2> /dev/null)"
  if [ -x "$LSB_RELEASE" ]; then
    RELEASE=$(lsb_release -i 2> /dev/null | sed 's/:\t/:/' | cut -d ':' -f 2-)
    case $RELEASE in
    "Fedora"|"Amazon"|"Mageia"|"OpenMandrivaLinux")
      PACKAGEMANAGERS=(yum)
      ;;
    "SUSE LINUX"|"openSUSE")
      PACKAGEMANAGERS=(zypp)
      ;;
    esac
  fi

  if [ "$PACKAGEMANAGERS" ]; then
    return
  fi

  # Fallback methods that are probably unnecessary on modern systems.
  if [ -f "/etc/fedora-release" ] || [ -f "/etc/redhat-release" ]; then
    PACKAGEMANAGERS=(yum)
  elif [ -f "/etc/system-release" ] && grep -Fq "Amazon Linux" "/etc/system-release"; then
    PACKAGEMANAGERS=(yum)
  elif [ -f "/etc/SuSE-release" ]; then
    PACKAGEMANAGERS=(zypp)
  fi
}

DEFAULT_ARCH="x86_64"
YUM_REPO_FILE="/etc/yum.repos.d/google-chrome.repo"
ZYPPER_REPO_FILE="/etc/zypp/repos.d/google-chrome.repo"

install_yum() {
  install_rpm_key

  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  if [ -d "/etc/yum.repos.d" ]; then
cat > "$YUM_REPO_FILE" << REPOCONTENT
[google-chrome]
name=google-chrome
baseurl=$REPOCONFIG/$DEFAULT_ARCH
enabled=1
gpgcheck=1
gpgkey=https://dl.google.com/linux/linux_signing_key.pub
REPOCONTENT
  fi
}

install_zypp() {
  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  # Ideally, we would run: zypper addrepo -t YUM -f \
  # "$REPOCONFIG/$DEFAULT_ARCH" "google-chrome"
  # but that does not work when zypper is running.
  if [ -d "/etc/zypp/repos.d" ]; then
cat > "$ZYPPER_REPO_FILE" << REPOCONTENT
[google-chrome]
name=google-chrome
enabled=1
autorefresh=1
baseurl=$REPOCONFIG/$DEFAULT_ARCH
gpgcheck=1
gpgkey=https://dl.google.com/linux/linux_signing_key.pub
type=rpm-md
keeppackages=0
REPOCONTENT
  fi
}

# Check if the automatic repository configuration is done, so we know when to
# stop trying.
verify_install() {
  # It's probably enough to see that the repo configs have been created. If they
  # aren't configured properly, update_bad_repo should catch that when it's run.
  case $1 in
  "yum")
    [ -f "$YUM_REPO_FILE" ]
    ;;
  "zypp")
    [ -f "$ZYPPER_REPO_FILE" ]
    ;;
  esac
}

# Update the Google repository if it's not set correctly.
update_bad_repo() {
  if [ ! "$REPOCONFIG" ]; then
    return 0
  fi

  determine_rpm_package_manager

  for PACKAGEMANAGER in ${PACKAGEMANAGERS[*]}
  do
    case $PACKAGEMANAGER in
    "yum")
      update_repo_file "$YUM_REPO_FILE"
      ;;
    "zypp")
      update_repo_file "$ZYPPER_REPO_FILE"
      ;;
    esac
  done
}

update_repo_file() {
  REPO_FILE="$1"

  # Don't do anything if the file isn't there, since that probably means the
  # user disabled it.
  if [ ! -r "$REPO_FILE" ]; then
    return 0
  fi

  # Check if the correct repository configuration is in there.
  REPOMATCH=$(grep "^baseurl=$REPOCONFIG/$DEFAULT_ARCH" "$REPO_FILE" \
    2>/dev/null)
  # If it's there, nothing to do
  if [ "$REPOMATCH" ]; then
    return 0
  fi

  # Check if it's there but disabled by commenting out (as opposed to using the
  # 'enabled' setting).
  MATCH_DISABLED=$(grep "^[[:space:]]*#.*baseurl=$REPOCONFIG/$DEFAULT_ARCH" \
    "$REPO_FILE" 2>/dev/null)
  if [ "$MATCH_DISABLED" ]; then
    # It's OK for it to be disabled, as long as nothing bogus is enabled in its
    # place.
    ACTIVECONFIGS=$(grep "^baseurl=.*" "$REPO_FILE" 2>/dev/null)
    if [ ! "$ACTIVECONFIGS" ]; then
      return 0
    fi
  fi

  # If we get here, the correct repository wasn't found, or something else is
  # active, so fix it. This assumes there is a 'baseurl' setting, but if not,
  # then that's just another way of disabling, so we won't try to add it.
  sed -i -e "s,^baseurl=.*,baseurl=$REPOCONFIG/$DEFAULT_ARCH," "$REPO_FILE"
}

# We only remove the repository configuration during a purge. Since RPM has
# no equivalent to dpkg --purge, the code below is actually never used. We
# keep it only for reference purposes, should we ever need it.
#
#remove_yum() {
#  rm -f "$YUM_REPO_FILE"
#}
#
#remove_zypp() {
#  # Ideally, we would run: zypper removerepo "google-chrome"
#  # but that does not work when zypper is running.
#  rm -f /etc/zypp/repos.d/google-chrome.repo
#}

DEFAULT_ARCH="x86_64"

get_lib_dir() {
  if [ "$DEFAULT_ARCH" = "i386" ] || [ "$DEFAULT_ARCH" = "armhf" ] || \
      [ "$DEFAULT_ARCH" = "mipsel" ]; then
    LIBDIR=lib
  elif [ "$DEFAULT_ARCH" = "x86_64" ] || [ "$DEFAULT_ARCH" = "aarch64" ] || \
        [ "$DEFAULT_ARCH" = "mips64el" ]; then
    LIBDIR=lib64
  else
    echo Unknown CPU Architecture: "$DEFAULT_ARCH"
    exit 1
  fi
}

## MAIN ##
if [ -r "$DEFAULTS_FILE" ]; then
  . "$DEFAULTS_FILE"
fi

install_rpm_key

if [ "$repo_add_once" = "true" ]; then
  determine_rpm_package_manager

  # Let's run through this for each supported package manager as detected...
  for PACKAGEMANAGER in ${PACKAGEMANAGERS[*]}
  do
    # The initial install happens in the post-install scripts, but there have been
    # reports of configuration problems, so just verify that everything looks
    # good, and if not, try to install again.
    verify_install $PACKAGEMANAGER
    if [ $? -ne 0 ]; then
      install_${PACKAGEMANAGER}
    fi
  done

  if [ $? -eq 0 ]; then
    # Do this for each supported package manager...
    for PACKAGEMANAGER in ${PACKAGEMANAGERS[*]}
    do
      # Before we quit auto-configuration, check that everything looks sane, since
      # part of this happened during package install and we don't have the return
      # value of that process.
      verify_install $PACKAGEMANAGER
      if [ $? -eq 0 ]; then
        sed -i -e 's/[[:space:]]*repo_add_once=.*/repo_add_once="false"/' \
          "$DEFAULTS_FILE"
      fi
    done
  fi
else
  update_bad_repo
fi