RetroShare/build_scripts/Android/pull_sysroot.sh
2020-03-20 00:10:11 +01:00

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#!/bin/bash
# Script to pull debugging sysroot from Android devices
#
# Copyright (C) 2020 Gioacchino Mazzurco <gio@eigenlab.org>
# Copyright (C) 2020 Asociación Civil Altermundi <info@altermundi.net>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation, version 3.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>
<<"ASCIIDOC"
Pull files from Android device to prepare a debugging sysroot
Inspired by:
https://fw4spl-org.github.io/fw4spl-blog/2015/07/27/Native-debugging-on-Android-with-QtCreator.html
The goal is to have a local copy of the sysroot of the connected device.
For that we use the command `adb pull <remote_dir_or_file> <local_dir_or_file>`
We will get a copy of:
- `/system/lib/`
- `/vendor/lib/`
- `libc.so`
- `libcutils.so`
As well as the binaries `linker` and `app_process`
IMPORTANT:
from one device to another, the remote file `app_process` can be a binary file
or a symlink to a binary file - which is NOT ok for us.
That's so we will try to pull every known possible variants of `app_process`,
e.g. `app_process32` or `app_process_init`
ASCIIDOC
## Define default value for variable, take two arguments, $1 variable name,
## $2 default variable value, if the variable is not already define define it
## with default value.
function define_default_value()
{
VAR_NAME="${1}"
DEFAULT_VALUE="${2}"
[ -z "${!VAR_NAME}" ] && export ${VAR_NAME}="${DEFAULT_VALUE}"
}
define_default_value ANDROID_SERIAL "$(adb devices | head -n 2 | tail -n 1 | awk '{print $1}')"
define_default_value DEBUG_SYSROOT "${HOME}/Builds/debug_sysroot/${ANDROID_SERIAL}/"
rm -rf "${DEBUG_SYSROOT}"
for mDir in "/system/lib/" "/vendor/lib/"; do
mkdir -p "${DEBUG_SYSROOT}/${mDir}"
# adb pull doesn't behave like rsync dirA/ dirB/ so avoid nesting the
# directory by deleting last one before copying
rmdir "${DEBUG_SYSROOT}/${mDir}"
adb pull "${mDir}" "${DEBUG_SYSROOT}/${mDir}"
done
# Retrieve the specific binaries - some of these adb commands will fail, since
# some files may not exist, but that's ok.
mkdir -p "${DEBUG_SYSROOT}/system/bin/"
for mBin in "/system/bin/linker" "/system/bin/app_process" \
"/system/bin/app_process_init" "/system/bin/app_process32" \
"/system/bin/app_process64" ; do
adb pull "${mBin}" "${DEBUG_SYSROOT}/${mBin}"
done
# Verify which variants of the specific binaries could be pulled
echo
echo "Found the following specific binaries:"
echo
ls -1 "${DEBUG_SYSROOT}/system/bin/"*
ls -1 "${DEBUG_SYSROOT}/system/lib/libc.so"*
ls -1 "${DEBUG_SYSROOT}/system/lib/libcutils.so"*
echo
echo DEBUG_SYSROOT="${DEBUG_SYSROOT}"